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mxfdec.c
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1 /*
2  * MXF demuxer.
3  * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /*
23  * References
24  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
25  * SMPTE 377M MXF File Format Specifications
26  * SMPTE 378M Operational Pattern 1a
27  * SMPTE 379M MXF Generic Container
28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29  * SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container
30  * SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container
31  *
32  * Principle
33  * Search for Track numbers which will identify essence element KLV packets.
34  * Search for SourcePackage which define tracks which contains Track numbers.
35  * Material Package contains tracks with reference to SourcePackage tracks.
36  * Search for Descriptors (Picture, Sound) which contains codec info and parameters.
37  * Assign Descriptors to correct Tracks.
38  *
39  * Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) then add MetaDataSet to MXFContext.
40  * Metadata parsing resolves Strong References to objects.
41  *
42  * Simple demuxer, only OP1A supported and some files might not work at all.
43  * Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1
44  */
45 
46 #include <inttypes.h>
47 
48 #include "libavutil/aes.h"
49 #include "libavutil/avassert.h"
50 #include "libavutil/mathematics.h"
51 #include "libavcodec/bytestream.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/timecode.h"
54 #include "avformat.h"
55 #include "internal.h"
56 #include "mxf.h"
57 
58 typedef enum {
59  Header,
60  BodyPartition,
61  Footer
62 } MXFPartitionType;
63 
64 typedef enum {
65  OP1a = 1,
66  OP1b,
67  OP1c,
68  OP2a,
69  OP2b,
70  OP2c,
71  OP3a,
72  OP3b,
73  OP3c,
74  OPAtom,
75  OPSONYOpt, /* FATE sample, violates the spec in places */
76 } MXFOP;
77 
78 typedef struct MXFPartition {
79  int closed;
80  int complete;
81  MXFPartitionType type;
82  uint64_t previous_partition;
83  int index_sid;
84  int body_sid;
85  int64_t this_partition;
86  int64_t essence_offset; ///< absolute offset of essence
87  int64_t essence_length;
88  int32_t kag_size;
89  int64_t header_byte_count;
90  int64_t index_byte_count;
91  int pack_length;
92  int64_t pack_ofs; ///< absolute offset of pack in file, including run-in
93 } MXFPartition;
94 
95 typedef struct MXFCryptoContext {
96  UID uid;
97  enum MXFMetadataSetType type;
98  UID source_container_ul;
99 } MXFCryptoContext;
100 
101 typedef struct MXFStructuralComponent {
102  UID uid;
103  enum MXFMetadataSetType type;
104  UID source_package_uid;
105  UID data_definition_ul;
106  int64_t duration;
107  int64_t start_position;
108  int source_track_id;
109 } MXFStructuralComponent;
110 
111 typedef struct MXFSequence {
112  UID uid;
113  enum MXFMetadataSetType type;
114  UID data_definition_ul;
115  UID *structural_components_refs;
116  int structural_components_count;
117  int64_t duration;
118  uint8_t origin;
119 } MXFSequence;
120 
121 typedef struct MXFTrack {
122  UID uid;
123  enum MXFMetadataSetType type;
124  int drop_frame;
125  int start_frame;
126  struct AVRational rate;
127  AVTimecode tc;
128 } MXFTimecodeComponent;
129 
130 typedef struct {
131  UID uid;
132  enum MXFMetadataSetType type;
133  UID input_segment_ref;
134 } MXFPulldownComponent;
135 
136 typedef struct {
137  UID uid;
138  enum MXFMetadataSetType type;
139  UID *structural_components_refs;
140  int structural_components_count;
141  int64_t duration;
142 } MXFEssenceGroup;
143 
144 typedef struct {
145  UID uid;
146  enum MXFMetadataSetType type;
147  char *name;
148  char *value;
149 } MXFTaggedValue;
150 
151 typedef struct {
152  UID uid;
153  enum MXFMetadataSetType type;
154  MXFSequence *sequence; /* mandatory, and only one */
155  UID sequence_ref;
156  int track_id;
157  uint8_t track_number[4];
158  AVRational edit_rate;
159  int intra_only;
160  uint64_t sample_count;
161  int64_t original_duration; /* st->duration in SampleRate/EditRate units */
162 } MXFTrack;
163 
164 typedef struct MXFDescriptor {
165  UID uid;
166  enum MXFMetadataSetType type;
167  UID essence_container_ul;
168  UID essence_codec_ul;
169  UID codec_ul;
170  AVRational sample_rate;
171  AVRational aspect_ratio;
172  int width;
173  int height; /* Field height, not frame height */
174  int frame_layout; /* See MXFFrameLayout enum */
175 #define MXF_TFF 1
176 #define MXF_BFF 2
177  int field_dominance;
178  int channels;
179  int bits_per_sample;
180  int64_t duration; /* ContainerDuration optional property */
181  unsigned int component_depth;
182  unsigned int horiz_subsampling;
183  unsigned int vert_subsampling;
184  UID *sub_descriptors_refs;
185  int sub_descriptors_count;
186  int linked_track_id;
187  uint8_t *extradata;
188  int extradata_size;
189  enum AVPixelFormat pix_fmt;
190 } MXFDescriptor;
191 
192 typedef struct MXFIndexTableSegment {
193  UID uid;
194  enum MXFMetadataSetType type;
195  int edit_unit_byte_count;
196  int index_sid;
197  int body_sid;
198  AVRational index_edit_rate;
199  uint64_t index_start_position;
200  uint64_t index_duration;
201  int8_t *temporal_offset_entries;
202  int *flag_entries;
203  uint64_t *stream_offset_entries;
204  int nb_index_entries;
205 } MXFIndexTableSegment;
206 
207 typedef struct MXFPackage {
208  UID uid;
209  enum MXFMetadataSetType type;
210  UID package_uid;
211  UID package_ul;
212  UID *tracks_refs;
213  int tracks_count;
214  MXFDescriptor *descriptor; /* only one */
215  UID descriptor_ref;
216  char *name;
217  UID *comment_refs;
218  int comment_count;
219 } MXFPackage;
220 
221 typedef struct MXFMetadataSet {
222  UID uid;
223  enum MXFMetadataSetType type;
224 } MXFMetadataSet;
225 
226 /* decoded index table */
227 typedef struct MXFIndexTable {
228  int index_sid;
229  int body_sid;
230  int nb_ptses; /* number of PTSes or total duration of index */
231  int64_t first_dts; /* DTS = EditUnit + first_dts */
232  int64_t *ptses; /* maps EditUnit -> PTS */
233  int nb_segments;
234  MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */
235  AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */
236  int8_t *offsets; /* temporal offsets for display order to stored order conversion */
237 } MXFIndexTable;
238 
239 typedef struct MXFContext {
240  MXFPartition *partitions;
241  unsigned partitions_count;
242  MXFOP op;
243  UID *packages_refs;
244  int packages_count;
245  MXFMetadataSet **metadata_sets;
246  int metadata_sets_count;
247  AVFormatContext *fc;
248  struct AVAES *aesc;
249  uint8_t *local_tags;
250  int local_tags_count;
251  uint64_t footer_partition;
252  KLVPacket current_klv_data;
253  int current_klv_index;
254  int run_in;
255  MXFPartition *current_partition;
256  int parsing_backward;
257  int64_t last_forward_tell;
258  int last_forward_partition;
259  int current_edit_unit;
260  int nb_index_tables;
261  MXFIndexTable *index_tables;
262  int edit_units_per_packet; ///< how many edit units to read at a time (PCM, OPAtom)
263 } MXFContext;
264 
265 enum MXFWrappingScheme {
266  Frame,
267  Clip,
268 };
269 
270 /* NOTE: klv_offset is not set (-1) for local keys */
271 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset);
272 
273 typedef struct MXFMetadataReadTableEntry {
274  const UID key;
275  MXFMetadataReadFunc *read;
276  int ctx_size;
277  enum MXFMetadataSetType type;
278 } MXFMetadataReadTableEntry;
279 
280 static int mxf_read_close(AVFormatContext *s);
281 
282 /* partial keys to match */
283 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
284 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
285 static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 };
286 static const uint8_t mxf_system_item_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 };
287 static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
288 /* complete keys to match */
289 static const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 };
290 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
291 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
292 static const uint8_t mxf_random_index_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
293 static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
294 static const uint8_t mxf_avid_project_name[] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf };
295 static const uint8_t mxf_jp2k_rsiz[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 };
296 static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
297 static const uint8_t mxf_indirect_value_utf16be[] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
298 
299 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
300 
301 static void mxf_free_metadataset(MXFMetadataSet **ctx, int freectx)
302 {
303  MXFIndexTableSegment *seg;
304  switch ((*ctx)->type) {
305  case Descriptor:
306  av_freep(&((MXFDescriptor *)*ctx)->extradata);
307  break;
308  case MultipleDescriptor:
309  av_freep(&((MXFDescriptor *)*ctx)->sub_descriptors_refs);
310  break;
311  case Sequence:
312  av_freep(&((MXFSequence *)*ctx)->structural_components_refs);
313  break;
314  case EssenceGroup:
315  av_freep(&((MXFEssenceGroup *)*ctx)->structural_components_refs);
316  break;
317  case SourcePackage:
318  case MaterialPackage:
319  av_freep(&((MXFPackage *)*ctx)->tracks_refs);
320  av_freep(&((MXFPackage *)*ctx)->name);
321  av_freep(&((MXFPackage *)*ctx)->comment_refs);
322  break;
323  case TaggedValue:
324  av_freep(&((MXFTaggedValue *)*ctx)->name);
325  av_freep(&((MXFTaggedValue *)*ctx)->value);
326  break;
327  case IndexTableSegment:
328  seg = (MXFIndexTableSegment *)*ctx;
329  av_freep(&seg->temporal_offset_entries);
330  av_freep(&seg->flag_entries);
331  av_freep(&seg->stream_offset_entries);
332  default:
333  break;
334  }
335  if (freectx)
336  av_freep(ctx);
337 }
338 
339 static int64_t klv_decode_ber_length(AVIOContext *pb)
340 {
341  uint64_t size = avio_r8(pb);
342  if (size & 0x80) { /* long form */
343  int bytes_num = size & 0x7f;
344  /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
345  if (bytes_num > 8)
346  return AVERROR_INVALIDDATA;
347  size = 0;
348  while (bytes_num--)
349  size = size << 8 | avio_r8(pb);
350  }
351  return size;
352 }
353 
354 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
355 {
356  int i, b;
357  for (i = 0; i < size && !avio_feof(pb); i++) {
358  b = avio_r8(pb);
359  if (b == key[0])
360  i = 0;
361  else if (b != key[i])
362  i = -1;
363  }
364  return i == size;
365 }
366 
367 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
368 {
369  if (!mxf_read_sync(pb, mxf_klv_key, 4))
370  return AVERROR_INVALIDDATA;
371  klv->offset = avio_tell(pb) - 4;
372  memcpy(klv->key, mxf_klv_key, 4);
373  avio_read(pb, klv->key + 4, 12);
374  klv->length = klv_decode_ber_length(pb);
375  return klv->length == -1 ? -1 : 0;
376 }
377 
378 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
379 {
380  int i;
381 
382  for (i = 0; i < s->nb_streams; i++) {
383  MXFTrack *track = s->streams[i]->priv_data;
384  /* SMPTE 379M 7.3 */
385  if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
386  return i;
387  }
388  /* return 0 if only one stream, for OP Atom files with 0 as track number */
389  return s->nb_streams == 1 ? 0 : -1;
390 }
391 
392 /* XXX: use AVBitStreamFilter */
393 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
394 {
395  const uint8_t *buf_ptr, *end_ptr;
396  uint8_t *data_ptr;
397  int i;
398 
399  if (length > 61444) /* worst case PAL 1920 samples 8 channels */
400  return AVERROR_INVALIDDATA;
401  length = av_get_packet(pb, pkt, length);
402  if (length < 0)
403  return length;
404  data_ptr = pkt->data;
405  end_ptr = pkt->data + length;
406  buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
407  for (; end_ptr - buf_ptr >= st->codec->channels * 4; ) {
408  for (i = 0; i < st->codec->channels; i++) {
409  uint32_t sample = bytestream_get_le32(&buf_ptr);
410  if (st->codec->bits_per_coded_sample == 24)
411  bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
412  else
413  bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
414  }
415  buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
416  }
417  av_shrink_packet(pkt, data_ptr - pkt->data);
418  return 0;
419 }
420 
421 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
422 {
423  static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
424  MXFContext *mxf = s->priv_data;
425  AVIOContext *pb = s->pb;
426  int64_t end = avio_tell(pb) + klv->length;
427  int64_t size;
428  uint64_t orig_size;
429  uint64_t plaintext_size;
430  uint8_t ivec[16];
431  uint8_t tmpbuf[16];
432  int index;
433 
434  if (!mxf->aesc && s->key && s->keylen == 16) {
435  mxf->aesc = av_aes_alloc();
436  if (!mxf->aesc)
437  return AVERROR(ENOMEM);
438  av_aes_init(mxf->aesc, s->key, 128, 1);
439  }
440  // crypto context
441  avio_skip(pb, klv_decode_ber_length(pb));
442  // plaintext offset
443  klv_decode_ber_length(pb);
444  plaintext_size = avio_rb64(pb);
445  // source klv key
446  klv_decode_ber_length(pb);
447  avio_read(pb, klv->key, 16);
448  if (!IS_KLV_KEY(klv, mxf_essence_element_key))
449  return AVERROR_INVALIDDATA;
450  index = mxf_get_stream_index(s, klv);
451  if (index < 0)
452  return AVERROR_INVALIDDATA;
453  // source size
454  klv_decode_ber_length(pb);
455  orig_size = avio_rb64(pb);
456  if (orig_size < plaintext_size)
457  return AVERROR_INVALIDDATA;
458  // enc. code
459  size = klv_decode_ber_length(pb);
460  if (size < 32 || size - 32 < orig_size)
461  return AVERROR_INVALIDDATA;
462  avio_read(pb, ivec, 16);
463  avio_read(pb, tmpbuf, 16);
464  if (mxf->aesc)
465  av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
466  if (memcmp(tmpbuf, checkv, 16))
467  av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
468  size -= 32;
469  size = av_get_packet(pb, pkt, size);
470  if (size < 0)
471  return size;
472  else if (size < plaintext_size)
473  return AVERROR_INVALIDDATA;
474  size -= plaintext_size;
475  if (mxf->aesc)
476  av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
477  &pkt->data[plaintext_size], size >> 4, ivec, 1);
478  av_shrink_packet(pkt, orig_size);
479  pkt->stream_index = index;
480  avio_skip(pb, end - avio_tell(pb));
481  return 0;
482 }
483 
484 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
485 {
486  MXFContext *mxf = arg;
487  int item_num = avio_rb32(pb);
488  int item_len = avio_rb32(pb);
489 
490  if (item_len != 18) {
491  avpriv_request_sample(pb, "Primer pack item length %d", item_len);
492  return AVERROR_PATCHWELCOME;
493  }
494  if (item_num > 65536) {
495  av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num);
496  return AVERROR_INVALIDDATA;
497  }
498  if (mxf->local_tags)
499  av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple primer packs\n");
500  av_free(mxf->local_tags);
501  mxf->local_tags_count = 0;
502  mxf->local_tags = av_calloc(item_num, item_len);
503  if (!mxf->local_tags)
504  return AVERROR(ENOMEM);
505  mxf->local_tags_count = item_num;
506  avio_read(pb, mxf->local_tags, item_num*item_len);
507  return 0;
508 }
509 
510 static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
511 {
512  MXFContext *mxf = arg;
513  MXFPartition *partition, *tmp_part;
514  UID op;
515  uint64_t footer_partition;
516  uint32_t nb_essence_containers;
517 
518  tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions));
519  if (!tmp_part)
520  return AVERROR(ENOMEM);
521  mxf->partitions = tmp_part;
522 
523  if (mxf->parsing_backward) {
524  /* insert the new partition pack in the middle
525  * this makes the entries in mxf->partitions sorted by offset */
526  memmove(&mxf->partitions[mxf->last_forward_partition+1],
527  &mxf->partitions[mxf->last_forward_partition],
528  (mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions));
529  partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition];
530  } else {
531  mxf->last_forward_partition++;
532  partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count];
533  }
534 
535  memset(partition, 0, sizeof(*partition));
536  mxf->partitions_count++;
537  partition->pack_length = avio_tell(pb) - klv_offset + size;
538  partition->pack_ofs = klv_offset;
539 
540  switch(uid[13]) {
541  case 2:
542  partition->type = Header;
543  break;
544  case 3:
545  partition->type = BodyPartition;
546  break;
547  case 4:
548  partition->type = Footer;
549  break;
550  default:
551  av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
552  return AVERROR_INVALIDDATA;
553  }
554 
555  /* consider both footers to be closed (there is only Footer and CompleteFooter) */
556  partition->closed = partition->type == Footer || !(uid[14] & 1);
557  partition->complete = uid[14] > 2;
558  avio_skip(pb, 4);
559  partition->kag_size = avio_rb32(pb);
560  partition->this_partition = avio_rb64(pb);
561  partition->previous_partition = avio_rb64(pb);
562  footer_partition = avio_rb64(pb);
563  partition->header_byte_count = avio_rb64(pb);
564  partition->index_byte_count = avio_rb64(pb);
565  partition->index_sid = avio_rb32(pb);
566  avio_skip(pb, 8);
567  partition->body_sid = avio_rb32(pb);
568  if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) {
569  av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n");
570  return AVERROR_INVALIDDATA;
571  }
572  nb_essence_containers = avio_rb32(pb);
573 
574  if (partition->this_partition &&
575  partition->previous_partition == partition->this_partition) {
576  av_log(mxf->fc, AV_LOG_ERROR,
577  "PreviousPartition equal to ThisPartition %"PRIx64"\n",
578  partition->previous_partition);
579  /* override with the actual previous partition offset */
580  if (!mxf->parsing_backward && mxf->last_forward_partition > 1) {
581  MXFPartition *prev =
582  mxf->partitions + mxf->last_forward_partition - 2;
583  partition->previous_partition = prev->this_partition;
584  }
585  /* if no previous body partition are found point to the header
586  * partition */
587  if (partition->previous_partition == partition->this_partition)
588  partition->previous_partition = 0;
589  av_log(mxf->fc, AV_LOG_ERROR,
590  "Overriding PreviousPartition with %"PRIx64"\n",
591  partition->previous_partition);
592  }
593 
594  /* some files don'thave FooterPartition set in every partition */
595  if (footer_partition) {
596  if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
597  av_log(mxf->fc, AV_LOG_ERROR,
598  "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
599  mxf->footer_partition, footer_partition);
600  } else {
601  mxf->footer_partition = footer_partition;
602  }
603  }
604 
605  av_log(mxf->fc, AV_LOG_TRACE,
606  "PartitionPack: ThisPartition = 0x%"PRIX64
607  ", PreviousPartition = 0x%"PRIX64", "
608  "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
609  partition->this_partition,
610  partition->previous_partition, footer_partition,
611  partition->index_sid, partition->body_sid);
612 
613  /* sanity check PreviousPartition if set */
614  //NOTE: this isn't actually enough, see mxf_seek_to_previous_partition()
615  if (partition->previous_partition &&
616  mxf->run_in + partition->previous_partition >= klv_offset) {
617  av_log(mxf->fc, AV_LOG_ERROR,
618  "PreviousPartition points to this partition or forward\n");
619  return AVERROR_INVALIDDATA;
620  }
621 
622  if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
623  else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
624  else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
625  else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
626  else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
627  else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
628  else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
629  else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
630  else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
631  else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt;
632  else if (op[12] == 0x10) {
633  /* SMPTE 390m: "There shall be exactly one essence container"
634  * The following block deals with files that violate this, namely:
635  * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
636  * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
637  if (nb_essence_containers != 1) {
638  MXFOP op = nb_essence_containers ? OP1a : OPAtom;
639 
640  /* only nag once */
641  if (!mxf->op)
642  av_log(mxf->fc, AV_LOG_WARNING,
643  "\"OPAtom\" with %"PRIu32" ECs - assuming %s\n",
644  nb_essence_containers,
645  op == OP1a ? "OP1a" : "OPAtom");
646 
647  mxf->op = op;
648  } else
649  mxf->op = OPAtom;
650  } else {
651  av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
652  mxf->op = OP1a;
653  }
654 
655  if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) {
656  av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ",
657  partition->kag_size);
658 
659  if (mxf->op == OPSONYOpt)
660  partition->kag_size = 512;
661  else
662  partition->kag_size = 1;
663 
664  av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size);
665  }
666 
667  return 0;
668 }
669 
670 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
671 {
672  MXFMetadataSet **tmp;
673 
674  tmp = av_realloc_array(mxf->metadata_sets, mxf->metadata_sets_count + 1, sizeof(*mxf->metadata_sets));
675  if (!tmp)
676  return AVERROR(ENOMEM);
677  mxf->metadata_sets = tmp;
678  mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
679  mxf->metadata_sets_count++;
680  return 0;
681 }
682 
683 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
684 {
685  MXFCryptoContext *cryptocontext = arg;
686  if (size != 16)
687  return AVERROR_INVALIDDATA;
688  if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
689  avio_read(pb, cryptocontext->source_container_ul, 16);
690  return 0;
691 }
692 
693 static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
694 {
695  *count = avio_rb32(pb);
696  *refs = av_calloc(*count, sizeof(UID));
697  if (!*refs) {
698  *count = 0;
699  return AVERROR(ENOMEM);
700  }
701  avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
702  avio_read(pb, (uint8_t *)*refs, *count * sizeof(UID));
703  return 0;
704 }
705 
706 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
707 {
708  MXFContext *mxf = arg;
709  switch (tag) {
710  case 0x1901:
711  if (mxf->packages_refs)
712  av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple packages_refs\n");
713  av_free(mxf->packages_refs);
714  return mxf_read_strong_ref_array(pb, &mxf->packages_refs, &mxf->packages_count);
715  }
716  return 0;
717 }
718 
719 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
720 {
721  MXFStructuralComponent *source_clip = arg;
722  switch(tag) {
723  case 0x0202:
724  source_clip->duration = avio_rb64(pb);
725  break;
726  case 0x1201:
727  source_clip->start_position = avio_rb64(pb);
728  break;
729  case 0x1101:
730  /* UMID, only get last 16 bytes */
731  avio_skip(pb, 16);
732  avio_read(pb, source_clip->source_package_uid, 16);
733  break;
734  case 0x1102:
735  source_clip->source_track_id = avio_rb32(pb);
736  break;
737  }
738  return 0;
739 }
740 
741 static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
742 {
743  MXFTimecodeComponent *mxf_timecode = arg;
744  switch(tag) {
745  case 0x1501:
746  mxf_timecode->start_frame = avio_rb64(pb);
747  break;
748  case 0x1502:
749  mxf_timecode->rate = (AVRational){avio_rb16(pb), 1};
750  break;
751  case 0x1503:
752  mxf_timecode->drop_frame = avio_r8(pb);
753  break;
754  }
755  return 0;
756 }
757 
758 static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
759 {
760  MXFPulldownComponent *mxf_pulldown = arg;
761  switch(tag) {
762  case 0x0d01:
763  avio_read(pb, mxf_pulldown->input_segment_ref, 16);
764  break;
765  }
766  return 0;
767 }
768 
769 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
770 {
771  MXFTrack *track = arg;
772  switch(tag) {
773  case 0x4801:
774  track->track_id = avio_rb32(pb);
775  break;
776  case 0x4804:
777  avio_read(pb, track->track_number, 4);
778  break;
779  case 0x4b01:
780  track->edit_rate.num = avio_rb32(pb);
781  track->edit_rate.den = avio_rb32(pb);
782  break;
783  case 0x4803:
784  avio_read(pb, track->sequence_ref, 16);
785  break;
786  }
787  return 0;
788 }
789 
790 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
791 {
792  MXFSequence *sequence = arg;
793  switch(tag) {
794  case 0x0202:
795  sequence->duration = avio_rb64(pb);
796  break;
797  case 0x0201:
798  avio_read(pb, sequence->data_definition_ul, 16);
799  break;
800  case 0x4b02:
801  sequence->origin = avio_r8(pb);
802  break;
803  case 0x1001:
804  return mxf_read_strong_ref_array(pb, &sequence->structural_components_refs,
805  &sequence->structural_components_count);
806  }
807  return 0;
808 }
809 
810 static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
811 {
812  MXFEssenceGroup *essence_group = arg;
813  switch (tag) {
814  case 0x0202:
815  essence_group->duration = avio_rb64(pb);
816  break;
817  case 0x0501:
818  return mxf_read_strong_ref_array(pb, &essence_group->structural_components_refs,
819  &essence_group->structural_components_count);
820  }
821  return 0;
822 }
823 
824 static inline int mxf_read_utf16_string(AVIOContext *pb, int size, char** str, int be)
825 {
826  int ret;
827  size_t buf_size;
828 
829  if (size < 0)
830  return AVERROR(EINVAL);
831 
832  buf_size = size + size / 2 + 1;
833  *str = av_malloc(buf_size);
834  if (!*str)
835  return AVERROR(ENOMEM);
836 
837  if (be)
838  ret = avio_get_str16be(pb, size, *str, buf_size);
839  else
840  ret = avio_get_str16le(pb, size, *str, buf_size);
841 
842  if (ret < 0) {
843  av_freep(str);
844  return ret;
845  }
846 
847  return ret;
848 }
849 
850 #define READ_STR16(type, big_endian) \
851 static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \
852 { \
853 return mxf_read_utf16_string(pb, size, str, big_endian); \
854 }
855 READ_STR16(be, 1)
856 READ_STR16(le, 0)
857 #undef READ_STR16
858 
859 static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
860 {
861  MXFPackage *package = arg;
862  switch(tag) {
863  case 0x4403:
864  return mxf_read_strong_ref_array(pb, &package->tracks_refs,
865  &package->tracks_count);
866  case 0x4401:
867  /* UMID */
868  avio_read(pb, package->package_ul, 16);
869  avio_read(pb, package->package_uid, 16);
870  break;
871  case 0x4701:
872  avio_read(pb, package->descriptor_ref, 16);
873  break;
874  case 0x4402:
875  return mxf_read_utf16be_string(pb, size, &package->name);
876  case 0x4406:
877  return mxf_read_strong_ref_array(pb, &package->comment_refs,
878  &package->comment_count);
879  }
880  return 0;
881 }
882 
883 static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
884 {
885  int i, length;
886 
887  segment->nb_index_entries = avio_rb32(pb);
888 
889  length = avio_rb32(pb);
890 
891  if (!(segment->temporal_offset_entries=av_calloc(segment->nb_index_entries, sizeof(*segment->temporal_offset_entries))) ||
892  !(segment->flag_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->flag_entries))) ||
893  !(segment->stream_offset_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->stream_offset_entries)))) {
894  av_freep(&segment->temporal_offset_entries);
895  av_freep(&segment->flag_entries);
896  return AVERROR(ENOMEM);
897  }
898 
899  for (i = 0; i < segment->nb_index_entries; i++) {
900  segment->temporal_offset_entries[i] = avio_r8(pb);
901  avio_r8(pb); /* KeyFrameOffset */
902  segment->flag_entries[i] = avio_r8(pb);
903  segment->stream_offset_entries[i] = avio_rb64(pb);
904  avio_skip(pb, length - 11);
905  }
906  return 0;
907 }
908 
909 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
910 {
911  MXFIndexTableSegment *segment = arg;
912  switch(tag) {
913  case 0x3F05:
914  segment->edit_unit_byte_count = avio_rb32(pb);
915  av_log(NULL, AV_LOG_TRACE, "EditUnitByteCount %d\n", segment->edit_unit_byte_count);
916  break;
917  case 0x3F06:
918  segment->index_sid = avio_rb32(pb);
919  av_log(NULL, AV_LOG_TRACE, "IndexSID %d\n", segment->index_sid);
920  break;
921  case 0x3F07:
922  segment->body_sid = avio_rb32(pb);
923  av_log(NULL, AV_LOG_TRACE, "BodySID %d\n", segment->body_sid);
924  break;
925  case 0x3F0A:
926  av_log(NULL, AV_LOG_TRACE, "IndexEntryArray found\n");
927  return mxf_read_index_entry_array(pb, segment);
928  case 0x3F0B:
929  segment->index_edit_rate.num = avio_rb32(pb);
930  segment->index_edit_rate.den = avio_rb32(pb);
931  av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
932  segment->index_edit_rate.den);
933  break;
934  case 0x3F0C:
935  segment->index_start_position = avio_rb64(pb);
936  av_log(NULL, AV_LOG_TRACE, "IndexStartPosition %"PRId64"\n", segment->index_start_position);
937  break;
938  case 0x3F0D:
939  segment->index_duration = avio_rb64(pb);
940  av_log(NULL, AV_LOG_TRACE, "IndexDuration %"PRId64"\n", segment->index_duration);
941  break;
942  }
943  return 0;
944 }
945 
946 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
947 {
948  int code, value, ofs = 0;
949  char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */
950 
951  do {
952  code = avio_r8(pb);
953  value = avio_r8(pb);
954  av_log(NULL, AV_LOG_TRACE, "pixel layout: code %#x\n", code);
955 
956  if (ofs <= 14) {
957  layout[ofs++] = code;
958  layout[ofs++] = value;
959  } else
960  break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */
961  } while (code != 0); /* SMPTE 377M E.2.46 */
962 
963  ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
964 }
965 
966 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
967 {
968  MXFDescriptor *descriptor = arg;
969  switch(tag) {
970  case 0x3F01:
971  return mxf_read_strong_ref_array(pb, &descriptor->sub_descriptors_refs,
972  &descriptor->sub_descriptors_count);
973  case 0x3002: /* ContainerDuration */
974  descriptor->duration = avio_rb64(pb);
975  break;
976  case 0x3004:
977  avio_read(pb, descriptor->essence_container_ul, 16);
978  break;
979  case 0x3005:
980  avio_read(pb, descriptor->codec_ul, 16);
981  break;
982  case 0x3006:
983  descriptor->linked_track_id = avio_rb32(pb);
984  break;
985  case 0x3201: /* PictureEssenceCoding */
986  avio_read(pb, descriptor->essence_codec_ul, 16);
987  break;
988  case 0x3203:
989  descriptor->width = avio_rb32(pb);
990  break;
991  case 0x3202:
992  descriptor->height = avio_rb32(pb);
993  break;
994  case 0x320C:
995  descriptor->frame_layout = avio_r8(pb);
996  break;
997  case 0x320E:
998  descriptor->aspect_ratio.num = avio_rb32(pb);
999  descriptor->aspect_ratio.den = avio_rb32(pb);
1000  break;
1001  case 0x3212:
1002  descriptor->field_dominance = avio_r8(pb);
1003  break;
1004  case 0x3301:
1005  descriptor->component_depth = avio_rb32(pb);
1006  break;
1007  case 0x3302:
1008  descriptor->horiz_subsampling = avio_rb32(pb);
1009  break;
1010  case 0x3308:
1011  descriptor->vert_subsampling = avio_rb32(pb);
1012  break;
1013  case 0x3D03:
1014  descriptor->sample_rate.num = avio_rb32(pb);
1015  descriptor->sample_rate.den = avio_rb32(pb);
1016  break;
1017  case 0x3D06: /* SoundEssenceCompression */
1018  avio_read(pb, descriptor->essence_codec_ul, 16);
1019  break;
1020  case 0x3D07:
1021  descriptor->channels = avio_rb32(pb);
1022  break;
1023  case 0x3D01:
1024  descriptor->bits_per_sample = avio_rb32(pb);
1025  break;
1026  case 0x3401:
1027  mxf_read_pixel_layout(pb, descriptor);
1028  break;
1029  default:
1030  /* Private uid used by SONY C0023S01.mxf */
1031  if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
1032  if (descriptor->extradata)
1033  av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n");
1034  av_free(descriptor->extradata);
1035  descriptor->extradata_size = 0;
1036  descriptor->extradata = av_malloc(size);
1037  if (!descriptor->extradata)
1038  return AVERROR(ENOMEM);
1039  descriptor->extradata_size = size;
1040  avio_read(pb, descriptor->extradata, size);
1041  }
1042  if (IS_KLV_KEY(uid, mxf_jp2k_rsiz)) {
1043  uint32_t rsiz = avio_rb16(pb);
1044  if (rsiz == FF_PROFILE_JPEG2000_DCINEMA_2K ||
1045  rsiz == FF_PROFILE_JPEG2000_DCINEMA_4K)
1046  descriptor->pix_fmt = AV_PIX_FMT_XYZ12;
1047  }
1048  break;
1049  }
1050  return 0;
1051 }
1052 
1053 static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size)
1054 {
1055  MXFTaggedValue *tagged_value = arg;
1056  uint8_t key[17];
1057 
1058  if (size <= 17)
1059  return 0;
1060 
1061  avio_read(pb, key, 17);
1062  /* TODO: handle other types of of indirect values */
1063  if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {
1064  return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);
1065  } else if (memcmp(key, mxf_indirect_value_utf16be, 17) == 0) {
1066  return mxf_read_utf16be_string(pb, size - 17, &tagged_value->value);
1067  }
1068  return 0;
1069 }
1070 
1071 static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1072 {
1073  MXFTaggedValue *tagged_value = arg;
1074  switch (tag){
1075  case 0x5001:
1076  return mxf_read_utf16be_string(pb, size, &tagged_value->name);
1077  case 0x5003:
1078  return mxf_read_indirect_value(tagged_value, pb, size);
1079  }
1080  return 0;
1081 }
1082 
1083 /*
1084  * Match an uid independently of the version byte and up to len common bytes
1085  * Returns: boolean
1086  */
1087 static int mxf_match_uid(const UID key, const UID uid, int len)
1088 {
1089  int i;
1090  for (i = 0; i < len; i++) {
1091  if (i != 7 && key[i] != uid[i])
1092  return 0;
1093  }
1094  return 1;
1095 }
1096 
1097 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
1098 {
1099  while (uls->uid[0]) {
1100  if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
1101  break;
1102  uls++;
1103  }
1104  return uls;
1105 }
1106 
1107 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
1108 {
1109  int i;
1110 
1111  if (!strong_ref)
1112  return NULL;
1113  for (i = 0; i < mxf->metadata_sets_count; i++) {
1114  if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
1115  (type == AnyType || mxf->metadata_sets[i]->type == type)) {
1116  return mxf->metadata_sets[i];
1117  }
1118  }
1119  return NULL;
1120 }
1121 
1122 static const MXFCodecUL mxf_picture_essence_container_uls[] = {
1123  // video essence container uls
1124  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 },
1125  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14, AV_CODEC_ID_H264 }, /* H264 Frame wrapped */
1126  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14, AV_CODEC_ID_VC1 }, /* VC-1 Frame wrapped */
1127  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
1128  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* Type D-10 mapping of 40Mbps 525/60-I */
1129  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
1130  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO }, /* Uncompressed Picture */
1131  { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14, AV_CODEC_ID_RAWVIDEO }, /* Legacy ?? Uncompressed Picture */
1132  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1133 };
1134 
1135 /* EC ULs for intra-only formats */
1136 static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
1137  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MXF-GC SMPTE D-10 Mappings */
1138  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1139 };
1140 
1141 /* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
1142 static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
1143  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14, AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra Profiles */
1144  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG2000 Codestream */
1145  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1146 };
1147 
1148 static const MXFCodecUL mxf_sound_essence_container_uls[] = {
1149  // sound essence container uls
1150  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
1151  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
1152  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */
1153  { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */
1154  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14, AV_CODEC_ID_AAC }, /* MPEG2 AAC ADTS (legacy) */
1155  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1156 };
1157 
1158 static const MXFCodecUL mxf_data_essence_container_uls[] = {
1159  { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, 0 },
1160  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1161 };
1162 
1163 static const char* const mxf_data_essence_descriptor[] = {
1164  "vbi_vanc_smpte_436M",
1165 };
1166 
1167 static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
1168 {
1169  int i, j, nb_segments = 0;
1170  MXFIndexTableSegment **unsorted_segments;
1171  int last_body_sid = -1, last_index_sid = -1, last_index_start = -1;
1172 
1173  /* count number of segments, allocate arrays and copy unsorted segments */
1174  for (i = 0; i < mxf->metadata_sets_count; i++)
1175  if (mxf->metadata_sets[i]->type == IndexTableSegment)
1176  nb_segments++;
1177 
1178  if (!nb_segments)
1179  return AVERROR_INVALIDDATA;
1180 
1181  if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) ||
1182  !(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) {
1183  av_freep(sorted_segments);
1184  av_free(unsorted_segments);
1185  return AVERROR(ENOMEM);
1186  }
1187 
1188  for (i = j = 0; i < mxf->metadata_sets_count; i++)
1189  if (mxf->metadata_sets[i]->type == IndexTableSegment)
1190  unsorted_segments[j++] = (MXFIndexTableSegment*)mxf->metadata_sets[i];
1191 
1192  *nb_sorted_segments = 0;
1193 
1194  /* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */
1195  for (i = 0; i < nb_segments; i++) {
1196  int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1;
1197  uint64_t best_index_duration = 0;
1198 
1199  for (j = 0; j < nb_segments; j++) {
1200  MXFIndexTableSegment *s = unsorted_segments[j];
1201 
1202  /* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates.
1203  * We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around.
1204  * If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have.
1205  */
1206  if ((i == 0 || s->body_sid > last_body_sid || s->index_sid > last_index_sid || s->index_start_position > last_index_start) &&
1207  (best == -1 || s->body_sid < best_body_sid || s->index_sid < best_index_sid || s->index_start_position < best_index_start ||
1208  (s->index_start_position == best_index_start && s->index_duration > best_index_duration))) {
1209  best = j;
1210  best_body_sid = s->body_sid;
1211  best_index_sid = s->index_sid;
1212  best_index_start = s->index_start_position;
1213  best_index_duration = s->index_duration;
1214  }
1215  }
1216 
1217  /* no suitable entry found -> we're done */
1218  if (best == -1)
1219  break;
1220 
1221  (*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best];
1222  last_body_sid = best_body_sid;
1223  last_index_sid = best_index_sid;
1224  last_index_start = best_index_start;
1225  }
1226 
1227  av_free(unsorted_segments);
1228 
1229  return 0;
1230 }
1231 
1232 /**
1233  * Computes the absolute file offset of the given essence container offset
1234  */
1235 static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
1236 {
1237  int x;
1238  int64_t offset_in = offset; /* for logging */
1239 
1240  for (x = 0; x < mxf->partitions_count; x++) {
1241  MXFPartition *p = &mxf->partitions[x];
1242 
1243  if (p->body_sid != body_sid)
1244  continue;
1245 
1246  if (offset < p->essence_length || !p->essence_length) {
1247  *offset_out = p->essence_offset + offset;
1248  return 0;
1249  }
1250 
1251  offset -= p->essence_length;
1252  }
1253 
1254  av_log(mxf->fc, AV_LOG_ERROR,
1255  "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
1256  offset_in, body_sid);
1257 
1258  return AVERROR_INVALIDDATA;
1259 }
1260 
1261 /**
1262  * Returns the end position of the essence container with given BodySID, or zero if unknown
1263  */
1264 static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
1265 {
1266  int x;
1267  int64_t ret = 0;
1268 
1269  for (x = 0; x < mxf->partitions_count; x++) {
1270  MXFPartition *p = &mxf->partitions[x];
1271 
1272  if (p->body_sid != body_sid)
1273  continue;
1274 
1275  if (!p->essence_length)
1276  return 0;
1277 
1278  ret = p->essence_offset + p->essence_length;
1279  }
1280 
1281  return ret;
1282 }
1283 
1284 /* EditUnit -> absolute offset */
1285 static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag)
1286 {
1287  int i;
1288  int64_t offset_temp = 0;
1289 
1290  for (i = 0; i < index_table->nb_segments; i++) {
1291  MXFIndexTableSegment *s = index_table->segments[i];
1292 
1293  edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
1294 
1295  if (edit_unit < s->index_start_position + s->index_duration) {
1296  int64_t index = edit_unit - s->index_start_position;
1297 
1298  if (s->edit_unit_byte_count)
1299  offset_temp += s->edit_unit_byte_count * index;
1300  else if (s->nb_index_entries) {
1301  if (s->nb_index_entries == 2 * s->index_duration + 1)
1302  index *= 2; /* Avid index */
1303 
1304  if (index < 0 || index >= s->nb_index_entries) {
1305  av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
1306  index_table->index_sid, s->index_start_position);
1307  return AVERROR_INVALIDDATA;
1308  }
1309 
1310  offset_temp = s->stream_offset_entries[index];
1311  } else {
1312  av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
1313  index_table->index_sid, s->index_start_position);
1314  return AVERROR_INVALIDDATA;
1315  }
1316 
1317  if (edit_unit_out)
1318  *edit_unit_out = edit_unit;
1319 
1320  return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out);
1321  } else {
1322  /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
1323  offset_temp += s->edit_unit_byte_count * s->index_duration;
1324  }
1325  }
1326 
1327  if (nag)
1328  av_log(mxf->fc, AV_LOG_ERROR, "failed to map EditUnit %"PRId64" in IndexSID %i to an offset\n", edit_unit, index_table->index_sid);
1329 
1330  return AVERROR_INVALIDDATA;
1331 }
1332 
1333 static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
1334 {
1335  int i, j, x;
1336  int8_t max_temporal_offset = -128;
1337  uint8_t *flags;
1338 
1339  /* first compute how many entries we have */
1340  for (i = 0; i < index_table->nb_segments; i++) {
1341  MXFIndexTableSegment *s = index_table->segments[i];
1342 
1343  if (!s->nb_index_entries) {
1344  index_table->nb_ptses = 0;
1345  return 0; /* no TemporalOffsets */
1346  }
1347 
1348  index_table->nb_ptses += s->index_duration;
1349  }
1350 
1351  /* paranoid check */
1352  if (index_table->nb_ptses <= 0)
1353  return 0;
1354 
1355  if (!(index_table->ptses = av_calloc(index_table->nb_ptses, sizeof(int64_t))) ||
1356  !(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry))) ||
1357  !(index_table->offsets = av_calloc(index_table->nb_ptses, sizeof(int8_t))) ||
1358  !(flags = av_calloc(index_table->nb_ptses, sizeof(uint8_t)))) {
1359  av_freep(&index_table->ptses);
1360  av_freep(&index_table->fake_index);
1361  av_freep(&index_table->offsets);
1362  return AVERROR(ENOMEM);
1363  }
1364 
1365  /* we may have a few bad TemporalOffsets
1366  * make sure the corresponding PTSes don't have the bogus value 0 */
1367  for (x = 0; x < index_table->nb_ptses; x++)
1368  index_table->ptses[x] = AV_NOPTS_VALUE;
1369 
1370  /**
1371  * We have this:
1372  *
1373  * x TemporalOffset
1374  * 0: 0
1375  * 1: 1
1376  * 2: 1
1377  * 3: -2
1378  * 4: 1
1379  * 5: 1
1380  * 6: -2
1381  *
1382  * We want to transform it into this:
1383  *
1384  * x DTS PTS
1385  * 0: -1 0
1386  * 1: 0 3
1387  * 2: 1 1
1388  * 3: 2 2
1389  * 4: 3 6
1390  * 5: 4 4
1391  * 6: 5 5
1392  *
1393  * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
1394  * then settings mxf->first_dts = -max(TemporalOffset[x]).
1395  * The latter makes DTS <= PTS.
1396  */
1397  for (i = x = 0; i < index_table->nb_segments; i++) {
1398  MXFIndexTableSegment *s = index_table->segments[i];
1399  int index_delta = 1;
1400  int n = s->nb_index_entries;
1401 
1402  if (s->nb_index_entries == 2 * s->index_duration + 1) {
1403  index_delta = 2; /* Avid index */
1404  /* ignore the last entry - it's the size of the essence container */
1405  n--;
1406  }
1407 
1408  for (j = 0; j < n; j += index_delta, x++) {
1409  int offset = s->temporal_offset_entries[j] / index_delta;
1410  int index = x + offset;
1411 
1412  if (x >= index_table->nb_ptses) {
1413  av_log(mxf->fc, AV_LOG_ERROR,
1414  "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
1415  s->nb_index_entries, s->index_duration);
1416  break;
1417  }
1418 
1419  flags[x] = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
1420 
1421  if (index < 0 || index >= index_table->nb_ptses) {
1422  av_log(mxf->fc, AV_LOG_ERROR,
1423  "index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
1424  x, offset, index);
1425  continue;
1426  }
1427 
1428  index_table->offsets[x] = offset;
1429  index_table->ptses[index] = x;
1430  max_temporal_offset = FFMAX(max_temporal_offset, offset);
1431  }
1432  }
1433 
1434  /* calculate the fake index table in display order */
1435  for (x = 0; x < index_table->nb_ptses; x++) {
1436  index_table->fake_index[x].timestamp = x;
1437  if (index_table->ptses[x] != AV_NOPTS_VALUE)
1438  index_table->fake_index[index_table->ptses[x]].flags = flags[x];
1439  }
1440  av_freep(&flags);
1441 
1442  index_table->first_dts = -max_temporal_offset;
1443 
1444  return 0;
1445 }
1446 
1447 /**
1448  * Sorts and collects index table segments into index tables.
1449  * Also computes PTSes if possible.
1450  */
1451 static int mxf_compute_index_tables(MXFContext *mxf)
1452 {
1453  int i, j, k, ret, nb_sorted_segments;
1454  MXFIndexTableSegment **sorted_segments = NULL;
1455 
1456  if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
1457  nb_sorted_segments <= 0) {
1458  av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
1459  return 0;
1460  }
1461 
1462  /* sanity check and count unique BodySIDs/IndexSIDs */
1463  for (i = 0; i < nb_sorted_segments; i++) {
1464  if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
1465  mxf->nb_index_tables++;
1466  else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
1467  av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
1468  ret = AVERROR_INVALIDDATA;
1469  goto finish_decoding_index;
1470  }
1471  }
1472 
1473  mxf->index_tables = av_mallocz_array(mxf->nb_index_tables,
1474  sizeof(*mxf->index_tables));
1475  if (!mxf->index_tables) {
1476  av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
1477  ret = AVERROR(ENOMEM);
1478  goto finish_decoding_index;
1479  }
1480 
1481  /* distribute sorted segments to index tables */
1482  for (i = j = 0; i < nb_sorted_segments; i++) {
1483  if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
1484  /* next IndexSID */
1485  j++;
1486  }
1487 
1488  mxf->index_tables[j].nb_segments++;
1489  }
1490 
1491  for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
1492  MXFIndexTable *t = &mxf->index_tables[j];
1493 
1494  t->segments = av_mallocz_array(t->nb_segments,
1495  sizeof(*t->segments));
1496 
1497  if (!t->segments) {
1498  av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
1499  " pointer array\n");
1500  ret = AVERROR(ENOMEM);
1501  goto finish_decoding_index;
1502  }
1503 
1504  if (sorted_segments[i]->index_start_position)
1505  av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
1506  sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
1507 
1508  memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
1509  t->index_sid = sorted_segments[i]->index_sid;
1510  t->body_sid = sorted_segments[i]->body_sid;
1511 
1512  if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
1513  goto finish_decoding_index;
1514 
1515  /* fix zero IndexDurations */
1516  for (k = 0; k < t->nb_segments; k++) {
1517  if (t->segments[k]->index_duration)
1518  continue;
1519 
1520  if (t->nb_segments > 1)
1521  av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
1522  t->index_sid, k);
1523 
1524  if (mxf->fc->nb_streams <= 0) {
1525  av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
1526  break;
1527  }
1528 
1529  /* assume the first stream's duration is reasonable
1530  * leave index_duration = 0 on further segments in case we have any (unlikely)
1531  */
1532  t->segments[k]->index_duration = mxf->fc->streams[0]->duration;
1533  break;
1534  }
1535  }
1536 
1537  ret = 0;
1538 finish_decoding_index:
1539  av_free(sorted_segments);
1540  return ret;
1541 }
1542 
1543 static int mxf_is_intra_only(MXFDescriptor *descriptor)
1544 {
1545  return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
1546  &descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE ||
1547  mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
1548  &descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE;
1549 }
1550 
1551 static int mxf_uid_to_str(UID uid, char **str)
1552 {
1553  int i;
1554  char *p;
1555  p = *str = av_mallocz(sizeof(UID) * 2 + 4 + 1);
1556  if (!p)
1557  return AVERROR(ENOMEM);
1558  for (i = 0; i < sizeof(UID); i++) {
1559  snprintf(p, 2 + 1, "%.2x", uid[i]);
1560  p += 2;
1561  if (i == 3 || i == 5 || i == 7 || i == 9) {
1562  snprintf(p, 1 + 1, "-");
1563  p++;
1564  }
1565  }
1566  return 0;
1567 }
1568 
1569 static int mxf_umid_to_str(UID ul, UID uid, char **str)
1570 {
1571  int i;
1572  char *p;
1573  p = *str = av_mallocz(sizeof(UID) * 4 + 2 + 1);
1574  if (!p)
1575  return AVERROR(ENOMEM);
1576  snprintf(p, 2 + 1, "0x");
1577  p += 2;
1578  for (i = 0; i < sizeof(UID); i++) {
1579  snprintf(p, 2 + 1, "%.2X", ul[i]);
1580  p += 2;
1581 
1582  }
1583  for (i = 0; i < sizeof(UID); i++) {
1584  snprintf(p, 2 + 1, "%.2X", uid[i]);
1585  p += 2;
1586  }
1587  return 0;
1588 }
1589 
1590 static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage* package)
1591 {
1592  char *str;
1593  int ret;
1594  if (!package)
1595  return 0;
1596  if ((ret = mxf_umid_to_str(package->package_ul, package->package_uid, &str)) < 0)
1597  return ret;
1598  av_dict_set(pm, key, str, AV_DICT_DONT_STRDUP_VAL);
1599  return 0;
1600 }
1601 
1602 static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc)
1603 {
1604  char buf[AV_TIMECODE_STR_SIZE];
1605  av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0);
1606 
1607  return 0;
1608 }
1609 
1610 static MXFTimecodeComponent* mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref)
1611 {
1612  MXFStructuralComponent *component = NULL;
1613  MXFPulldownComponent *pulldown = NULL;
1614 
1615  component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
1616  if (!component)
1617  return NULL;
1618 
1619  switch (component->type) {
1620  case TimecodeComponent:
1621  return (MXFTimecodeComponent*)component;
1622  case PulldownComponent: /* timcode component may be located on a pulldown component */
1623  pulldown = (MXFPulldownComponent*)component;
1624  return mxf_resolve_strong_ref(mxf, &pulldown->input_segment_ref, TimecodeComponent);
1625  default:
1626  break;
1627  }
1628  return NULL;
1629 }
1630 
1631 static MXFPackage* mxf_resolve_source_package(MXFContext *mxf, UID package_uid)
1632 {
1633  MXFPackage *package = NULL;
1634  int i;
1635 
1636  for (i = 0; i < mxf->packages_count; i++) {
1637  package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], SourcePackage);
1638  if (!package)
1639  continue;
1640 
1641  if (!memcmp(package->package_uid, package_uid, 16))
1642  return package;
1643  }
1644  return NULL;
1645 }
1646 
1647 static MXFDescriptor* mxf_resolve_multidescriptor(MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
1648 {
1649  MXFDescriptor *sub_descriptor = NULL;
1650  int i;
1651 
1652  if (!descriptor)
1653  return NULL;
1654 
1655  if (descriptor->type == MultipleDescriptor) {
1656  for (i = 0; i < descriptor->sub_descriptors_count; i++) {
1657  sub_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], Descriptor);
1658 
1659  if (!sub_descriptor) {
1660  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
1661  continue;
1662  }
1663  if (sub_descriptor->linked_track_id == track_id) {
1664  return sub_descriptor;
1665  }
1666  }
1667  } else if (descriptor->type == Descriptor)
1668  return descriptor;
1669 
1670  return NULL;
1671 }
1672 
1673 static MXFStructuralComponent* mxf_resolve_essence_group_choice(MXFContext *mxf, MXFEssenceGroup *essence_group)
1674 {
1675  MXFStructuralComponent *component = NULL;
1676  MXFPackage *package = NULL;
1677  MXFDescriptor *descriptor = NULL;
1678  int i;
1679 
1680  if (!essence_group || !essence_group->structural_components_count)
1681  return NULL;
1682 
1683  /* essence groups contains multiple representations of the same media,
1684  this return the first components with a valid Descriptor typically index 0 */
1685  for (i =0; i < essence_group->structural_components_count; i++){
1686  component = mxf_resolve_strong_ref(mxf, &essence_group->structural_components_refs[i], SourceClip);
1687  if (!component)
1688  continue;
1689 
1690  if (!(package = mxf_resolve_source_package(mxf, component->source_package_uid)))
1691  continue;
1692 
1693  descriptor = mxf_resolve_strong_ref(mxf, &package->descriptor_ref, Descriptor);
1694  if (descriptor)
1695  return component;
1696  }
1697  return NULL;
1698 }
1699 
1700 static MXFStructuralComponent* mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref)
1701 {
1702  MXFStructuralComponent *component = NULL;
1703 
1704  component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
1705  if (!component)
1706  return NULL;
1707  switch (component->type) {
1708  case SourceClip:
1709  return component;
1710  case EssenceGroup:
1711  return mxf_resolve_essence_group_choice(mxf, (MXFEssenceGroup*) component);
1712  default:
1713  break;
1714  }
1715  return NULL;
1716 }
1717 
1718 static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
1719 {
1720  MXFTaggedValue *tag;
1721  int size, i;
1722  char *key = NULL;
1723 
1724  for (i = 0; i < package->comment_count; i++) {
1725  tag = mxf_resolve_strong_ref(mxf, &package->comment_refs[i], TaggedValue);
1726  if (!tag || !tag->name || !tag->value)
1727  continue;
1728 
1729  size = strlen(tag->name) + 8 + 1;
1730  key = av_mallocz(size);
1731  if (!key)
1732  return AVERROR(ENOMEM);
1733 
1734  snprintf(key, size, "comment_%s", tag->name);
1735  av_dict_set(pm, key, tag->value, AV_DICT_DONT_STRDUP_KEY);
1736  }
1737  return 0;
1738 }
1739 
1740 static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st)
1741 {
1742  MXFPackage *physical_package = NULL;
1743  MXFTrack *physical_track = NULL;
1744  MXFStructuralComponent *sourceclip = NULL;
1745  MXFTimecodeComponent *mxf_tc = NULL;
1746  int i, j, k;
1747  AVTimecode tc;
1748  int flags;
1749  int64_t start_position;
1750 
1751  for (i = 0; i < source_track->sequence->structural_components_count; i++) {
1752  sourceclip = mxf_resolve_strong_ref(mxf, &source_track->sequence->structural_components_refs[i], SourceClip);
1753  if (!sourceclip)
1754  continue;
1755 
1756  if (!(physical_package = mxf_resolve_source_package(mxf, sourceclip->source_package_uid)))
1757  break;
1758 
1759  mxf_add_umid_metadata(&st->metadata, "reel_umid", physical_package);
1760 
1761  /* the name of physical source package is name of the reel or tape */
1762  if (physical_package->name && physical_package->name[0])
1763  av_dict_set(&st->metadata, "reel_name", physical_package->name, 0);
1764 
1765  /* the source timecode is calculated by adding the start_position of the sourceclip from the file source package track
1766  * to the start_frame of the timecode component located on one of the tracks of the physical source package.
1767  */
1768  for (j = 0; j < physical_package->tracks_count; j++) {
1769  if (!(physical_track = mxf_resolve_strong_ref(mxf, &physical_package->tracks_refs[j], Track))) {
1770  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
1771  continue;
1772  }
1773 
1774  if (!(physical_track->sequence = mxf_resolve_strong_ref(mxf, &physical_track->sequence_ref, Sequence))) {
1775  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
1776  continue;
1777  }
1778 
1779  for (k = 0; k < physical_track->sequence->structural_components_count; k++) {
1780  if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k])))
1781  continue;
1782 
1783  flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
1784  /* scale sourceclip start_position to match physical track edit rate */
1785  start_position = av_rescale_q(sourceclip->start_position,
1786  physical_track->edit_rate,
1787  source_track->edit_rate);
1788 
1789  if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) {
1790  mxf_add_timecode_metadata(&st->metadata, "timecode", &tc);
1791  return 0;
1792  }
1793  }
1794  }
1795  }
1796 
1797  return 0;
1798 }
1799 
1800 static int mxf_parse_structural_metadata(MXFContext *mxf)
1801 {
1802  MXFPackage *material_package = NULL;
1803  int i, j, k, ret;
1804 
1805  av_log(mxf->fc, AV_LOG_TRACE, "metadata sets count %d\n", mxf->metadata_sets_count);
1806  /* TODO: handle multiple material packages (OP3x) */
1807  for (i = 0; i < mxf->packages_count; i++) {
1808  material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
1809  if (material_package) break;
1810  }
1811  if (!material_package) {
1812  av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
1813  return AVERROR_INVALIDDATA;
1814  }
1815 
1816  mxf_add_umid_metadata(&mxf->fc->metadata, "material_package_umid", material_package);
1817  if (material_package->name && material_package->name[0])
1818  av_dict_set(&mxf->fc->metadata, "material_package_name", material_package->name, 0);
1819  mxf_parse_package_comments(mxf, &mxf->fc->metadata, material_package);
1820 
1821  for (i = 0; i < material_package->tracks_count; i++) {
1822  MXFPackage *source_package = NULL;
1823  MXFTrack *material_track = NULL;
1824  MXFTrack *source_track = NULL;
1825  MXFTrack *temp_track = NULL;
1826  MXFDescriptor *descriptor = NULL;
1827  MXFStructuralComponent *component = NULL;
1828  MXFTimecodeComponent *mxf_tc = NULL;
1829  UID *essence_container_ul = NULL;
1830  const MXFCodecUL *codec_ul = NULL;
1831  const MXFCodecUL *container_ul = NULL;
1832  const MXFCodecUL *pix_fmt_ul = NULL;
1833  AVStream *st;
1834  AVTimecode tc;
1835  int flags;
1836 
1837  if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
1838  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
1839  continue;
1840  }
1841 
1842  if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) {
1843  mxf_tc = (MXFTimecodeComponent*)component;
1844  flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
1845  if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
1846  mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
1847  }
1848  }
1849 
1850  if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
1851  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
1852  continue;
1853  }
1854 
1855  for (j = 0; j < material_track->sequence->structural_components_count; j++) {
1856  component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent);
1857  if (!component)
1858  continue;
1859 
1860  mxf_tc = (MXFTimecodeComponent*)component;
1861  flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
1862  if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
1863  mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
1864  break;
1865  }
1866  }
1867 
1868  /* TODO: handle multiple source clips */
1869  for (j = 0; j < material_track->sequence->structural_components_count; j++) {
1870  component = mxf_resolve_sourceclip(mxf, &material_track->sequence->structural_components_refs[j]);
1871  if (!component)
1872  continue;
1873 
1874  source_package = mxf_resolve_source_package(mxf, component->source_package_uid);
1875  if (!source_package) {
1876  av_log(mxf->fc, AV_LOG_TRACE, "material track %d: no corresponding source package found\n", material_track->track_id);
1877  break;
1878  }
1879  for (k = 0; k < source_package->tracks_count; k++) {
1880  if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
1881  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
1882  ret = AVERROR_INVALIDDATA;
1883  goto fail_and_free;
1884  }
1885  if (temp_track->track_id == component->source_track_id) {
1886  source_track = temp_track;
1887  break;
1888  }
1889  }
1890  if (!source_track) {
1891  av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
1892  break;
1893  }
1894  }
1895  if (!source_track || !component)
1896  continue;
1897 
1898  if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
1899  av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
1900  ret = AVERROR_INVALIDDATA;
1901  goto fail_and_free;
1902  }
1903 
1904  /* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
1905  * This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */
1906  if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) {
1907  av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id);
1908  continue;
1909  }
1910 
1911  st = avformat_new_stream(mxf->fc, NULL);
1912  if (!st) {
1913  av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
1914  ret = AVERROR(ENOMEM);
1915  goto fail_and_free;
1916  }
1917  st->id = source_track->track_id;
1918  st->priv_data = source_track;
1919 
1920  source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
1921  descriptor = mxf_resolve_multidescriptor(mxf, source_package->descriptor, source_track->track_id);
1922 
1923  /* A SourceClip from a EssenceGroup may only be a single frame of essence data. The clips duration is then how many
1924  * frames its suppose to repeat for. Descriptor->duration, if present, contains the real duration of the essence data */
1925  if (descriptor && descriptor->duration != AV_NOPTS_VALUE)
1926  source_track->original_duration = st->duration = FFMIN(descriptor->duration, component->duration);
1927  else
1928  source_track->original_duration = st->duration = component->duration;
1929 
1930  if (st->duration == -1)
1931  st->duration = AV_NOPTS_VALUE;
1932  st->start_time = component->start_position;
1933  if (material_track->edit_rate.num <= 0 ||
1934  material_track->edit_rate.den <= 0) {
1935  av_log(mxf->fc, AV_LOG_WARNING,
1936  "Invalid edit rate (%d/%d) found on stream #%d, "
1937  "defaulting to 25/1\n",
1938  material_track->edit_rate.num,
1939  material_track->edit_rate.den, st->index);
1940  material_track->edit_rate = (AVRational){25, 1};
1941  }
1942  avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
1943 
1944  /* ensure SourceTrack EditRate == MaterialTrack EditRate since only
1945  * the former is accessible via st->priv_data */
1946  source_track->edit_rate = material_track->edit_rate;
1947 
1948  PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
1949  codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
1950  st->codec->codec_type = codec_ul->id;
1951 
1952  if (!descriptor) {
1953  av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
1954  continue;
1955  }
1956  PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
1957  PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
1958  essence_container_ul = &descriptor->essence_container_ul;
1959  /* HACK: replacing the original key with mxf_encrypted_essence_container
1960  * is not allowed according to s429-6, try to find correct information anyway */
1961  if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
1962  av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
1963  for (k = 0; k < mxf->metadata_sets_count; k++) {
1964  MXFMetadataSet *metadata = mxf->metadata_sets[k];
1965  if (metadata->type == CryptoContext) {
1966  essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
1967  break;
1968  }
1969  }
1970  }
1971 
1972  /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
1973  codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
1974  st->codec->codec_id = (enum AVCodecID)codec_ul->id;
1975  if (st->codec->codec_id == AV_CODEC_ID_NONE) {
1976  codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->codec_ul);
1977  st->codec->codec_id = (enum AVCodecID)codec_ul->id;
1978  }
1979 
1980  av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ",
1981  avcodec_get_name(st->codec->codec_id));
1982  for (k = 0; k < 16; k++) {
1983  av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x",
1984  descriptor->essence_codec_ul[k]);
1985  if (!(k+1 & 19) || k == 5)
1986  av_log(mxf->fc, AV_LOG_VERBOSE, ".");
1987  }
1988  av_log(mxf->fc, AV_LOG_VERBOSE, "\n");
1989 
1990  mxf_add_umid_metadata(&st->metadata, "file_package_umid", source_package);
1991  if (source_package->name && source_package->name[0])
1992  av_dict_set(&st->metadata, "file_package_name", source_package->name, 0);
1993 
1994  mxf_parse_physical_source_package(mxf, source_track, st);
1995 
1996  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1997  source_track->intra_only = mxf_is_intra_only(descriptor);
1998  container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
1999  if (st->codec->codec_id == AV_CODEC_ID_NONE)
2000  st->codec->codec_id = container_ul->id;
2001  st->codec->width = descriptor->width;
2002  st->codec->height = descriptor->height; /* Field height, not frame height */
2003  switch (descriptor->frame_layout) {
2004  case FullFrame:
2005  st->codec->field_order = AV_FIELD_PROGRESSIVE;
2006  break;
2007  case OneField:
2008  /* Every other line is stored and needs to be duplicated. */
2009  av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n");
2010  break; /* The correct thing to do here is fall through, but by breaking we might be
2011  able to decode some streams at half the vertical resolution, rather than not al all.
2012  It's also for compatibility with the old behavior. */
2013  case MixedFields:
2014  break;
2015  case SegmentedFrame:
2016  st->codec->field_order = AV_FIELD_PROGRESSIVE;
2017  case SeparateFields:
2018  switch (descriptor->field_dominance) {
2019  case MXF_TFF:
2020  st->codec->field_order = AV_FIELD_TT;
2021  break;
2022  case MXF_BFF:
2023  st->codec->field_order = AV_FIELD_BB;
2024  break;
2025  default:
2026  avpriv_request_sample(mxf->fc,
2027  "Field dominance %d support",
2028  descriptor->field_dominance);
2029  case 0: // we already have many samples with field_dominance == unknown
2030  break;
2031  }
2032  /* Turn field height into frame height. */
2033  st->codec->height *= 2;
2034  break;
2035  default:
2036  av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout);
2037  }
2038  if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
2039  st->codec->pix_fmt = descriptor->pix_fmt;
2040  if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
2041  pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
2042  &descriptor->essence_codec_ul);
2043  st->codec->pix_fmt = (enum AVPixelFormat)pix_fmt_ul->id;
2044  if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
2045  st->codec->codec_tag = mxf_get_codec_ul(ff_mxf_codec_tag_uls,
2046  &descriptor->essence_codec_ul)->id;
2047  if (!st->codec->codec_tag) {
2048  /* support files created before RP224v10 by defaulting to UYVY422
2049  if subsampling is 4:2:2 and component depth is 8-bit */
2050  if (descriptor->horiz_subsampling == 2 &&
2051  descriptor->vert_subsampling == 1 &&
2052  descriptor->component_depth == 8) {
2053  st->codec->pix_fmt = AV_PIX_FMT_UYVY422;
2054  }
2055  }
2056  }
2057  }
2058  }
2059  st->need_parsing = AVSTREAM_PARSE_HEADERS;
2060  if (material_track->sequence->origin) {
2061  av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0);
2062  }
2063  if (source_track->sequence->origin) {
2064  av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0);
2065  }
2066  if (descriptor->aspect_ratio.num && descriptor->aspect_ratio.den)
2067  st->display_aspect_ratio = descriptor->aspect_ratio;
2068  } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2069  container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
2070  /* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */
2071  if (st->codec->codec_id == AV_CODEC_ID_NONE || (st->codec->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE))
2072  st->codec->codec_id = (enum AVCodecID)container_ul->id;
2073  st->codec->channels = descriptor->channels;
2074  st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
2075 
2076  if (descriptor->sample_rate.den > 0) {
2077  st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
2078  avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num);
2079  } else {
2080  av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) "
2081  "found for stream #%d, time base forced to 1/48000\n",
2082  descriptor->sample_rate.num, descriptor->sample_rate.den,
2083  st->index);
2084  avpriv_set_pts_info(st, 64, 1, 48000);
2085  }
2086 
2087  /* if duration is set, rescale it from EditRate to SampleRate */
2088  if (st->duration != AV_NOPTS_VALUE)
2089  st->duration = av_rescale_q(st->duration,
2090  av_inv_q(material_track->edit_rate),
2091  st->time_base);
2092 
2093  /* TODO: implement AV_CODEC_ID_RAWAUDIO */
2094  if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
2095  if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2096  st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
2097  else if (descriptor->bits_per_sample == 32)
2098  st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
2099  } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
2100  if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2101  st->codec->codec_id = AV_CODEC_ID_PCM_S24BE;
2102  else if (descriptor->bits_per_sample == 32)
2103  st->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
2104  } else if (st->codec->codec_id == AV_CODEC_ID_MP2) {
2105  st->need_parsing = AVSTREAM_PARSE_FULL;
2106  }
2107  } else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2108  int codec_id = mxf_get_codec_ul(mxf_data_essence_container_uls,
2109  essence_container_ul)->id;
2110  if (codec_id >= 0 &&
2111  codec_id < FF_ARRAY_ELEMS(mxf_data_essence_descriptor)) {
2112  av_dict_set(&st->metadata, "data_type",
2113  mxf_data_essence_descriptor[codec_id], 0);
2114  }
2115  }
2116  if (descriptor->extradata) {
2117  if (!ff_alloc_extradata(st->codec, descriptor->extradata_size)) {
2118  memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size);
2119  }
2120  } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
2121  ret = ff_generate_avci_extradata(st);
2122  if (ret < 0)
2123  return ret;
2124  }
2125  if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
2126  /* TODO: decode timestamps */
2127  st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
2128  }
2129  }
2130 
2131  ret = 0;
2132 fail_and_free:
2133  return ret;
2134 }
2135 
2136 static int mxf_timestamp_to_str(uint64_t timestamp, char **str)
2137 {
2138  struct tm time = { 0 };
2139  time.tm_year = (timestamp >> 48) - 1900;
2140  time.tm_mon = (timestamp >> 40 & 0xFF) - 1;
2141  time.tm_mday = (timestamp >> 32 & 0xFF);
2142  time.tm_hour = (timestamp >> 24 & 0xFF);
2143  time.tm_min = (timestamp >> 16 & 0xFF);
2144  time.tm_sec = (timestamp >> 8 & 0xFF);
2145 
2146  /* msvcrt versions of strftime calls the invalid parameter handler
2147  * (aborting the process if one isn't set) if the parameters are out
2148  * of range. */
2149  time.tm_mon = av_clip(time.tm_mon, 0, 11);
2150  time.tm_mday = av_clip(time.tm_mday, 1, 31);
2151  time.tm_hour = av_clip(time.tm_hour, 0, 23);
2152  time.tm_min = av_clip(time.tm_min, 0, 59);
2153  time.tm_sec = av_clip(time.tm_sec, 0, 59);
2154 
2155  *str = av_mallocz(32);
2156  if (!*str)
2157  return AVERROR(ENOMEM);
2158  if (!strftime(*str, 32, "%Y-%m-%d %H:%M:%S", &time))
2159  (*str)[0] = '\0';
2160 
2161  return 0;
2162 }
2163 
2164 #define SET_STR_METADATA(pb, name, str) do { \
2165  if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \
2166  return ret; \
2167  av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2168 } while (0)
2169 
2170 #define SET_UID_METADATA(pb, name, var, str) do { \
2171  avio_read(pb, var, 16); \
2172  if ((ret = mxf_uid_to_str(var, &str)) < 0) \
2173  return ret; \
2174  av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2175 } while (0)
2176 
2177 #define SET_TS_METADATA(pb, name, var, str) do { \
2178  var = avio_rb64(pb); \
2179  if ((ret = mxf_timestamp_to_str(var, &str)) < 0) \
2180  return ret; \
2181  av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2182 } while (0)
2183 
2184 static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
2185 {
2186  MXFContext *mxf = arg;
2187  AVFormatContext *s = mxf->fc;
2188  int ret;
2189  UID uid = { 0 };
2190  char *str = NULL;
2191  uint64_t ts;
2192  switch (tag) {
2193  case 0x3C01:
2194  SET_STR_METADATA(pb, "company_name", str);
2195  break;
2196  case 0x3C02:
2197  SET_STR_METADATA(pb, "product_name", str);
2198  break;
2199  case 0x3C04:
2200  SET_STR_METADATA(pb, "product_version", str);
2201  break;
2202  case 0x3C05:
2203  SET_UID_METADATA(pb, "product_uid", uid, str);
2204  break;
2205  case 0x3C06:
2206  SET_TS_METADATA(pb, "modification_date", ts, str);
2207  break;
2208  case 0x3C08:
2209  SET_STR_METADATA(pb, "application_platform", str);
2210  break;
2211  case 0x3C09:
2212  SET_UID_METADATA(pb, "generation_uid", uid, str);
2213  break;
2214  case 0x3C0A:
2215  SET_UID_METADATA(pb, "uid", uid, str);
2216  break;
2217  }
2218  return 0;
2219 }
2220 
2221 static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
2222 {
2223  MXFContext *mxf = arg;
2224  AVFormatContext *s = mxf->fc;
2225  int ret;
2226  char *str = NULL;
2227 
2228  if (tag >= 0x8000 && (IS_KLV_KEY(uid, mxf_avid_project_name))) {
2229  SET_STR_METADATA(pb, "project_name", str);
2230  }
2231  return 0;
2232 }
2233 
2234 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
2235  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
2236  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
2237  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
2238  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
2239  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
2240  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
2241  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
2242  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
2243  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
2244  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
2245  { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
2246  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2f,0x00 }, mxf_read_preface_metadata },
2247  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata },
2248  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
2249  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_package, sizeof(MXFPackage), SourcePackage },
2250  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_package, sizeof(MXFPackage), MaterialPackage },
2251  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
2252  { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x05,0x00 }, mxf_read_essence_group, sizeof(MXFEssenceGroup), EssenceGroup},
2253  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
2254  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3f,0x00 }, mxf_read_tagged_value, sizeof(MXFTaggedValue), TaggedValue },
2255  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
2256  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
2257  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
2258  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
2259  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */
2260  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
2261  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
2262  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */
2263  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VANC/VBI - SMPTE 436M */
2264  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */
2265  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
2266  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
2267  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent },
2268  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0c,0x00 }, mxf_read_pulldown_component, sizeof(MXFPulldownComponent), PulldownComponent },
2269  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
2270  { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
2271  { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
2272 };
2273 
2274 static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type)
2275 {
2276  switch (type){
2277  case MultipleDescriptor:
2278  case Descriptor:
2279  ((MXFDescriptor*)ctx)->pix_fmt = AV_PIX_FMT_NONE;
2280  ((MXFDescriptor*)ctx)->duration = AV_NOPTS_VALUE;
2281  break;
2282  default:
2283  break;
2284  }
2285  return 0;
2286 }
2287 
2288 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
2289 {
2290  AVIOContext *pb = mxf->fc->pb;
2291  MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
2292  uint64_t klv_end = avio_tell(pb) + klv->length;
2293 
2294  if (!ctx)
2295  return AVERROR(ENOMEM);
2296  mxf_metadataset_init(ctx, type);
2297  while (avio_tell(pb) + 4 < klv_end && !avio_feof(pb)) {
2298  int ret;
2299  int tag = avio_rb16(pb);
2300  int size = avio_rb16(pb); /* KLV specified by 0x53 */
2301  uint64_t next = avio_tell(pb) + size;
2302  UID uid = {0};
2303 
2304  av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x size %d\n", tag, size);
2305  if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
2306  av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
2307  continue;
2308  }
2309  if (tag > 0x7FFF) { /* dynamic tag */
2310  int i;
2311  for (i = 0; i < mxf->local_tags_count; i++) {
2312  int local_tag = AV_RB16(mxf->local_tags+i*18);
2313  if (local_tag == tag) {
2314  memcpy(uid, mxf->local_tags+i*18+2, 16);
2315  av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x\n", local_tag);
2316  PRINT_KEY(mxf->fc, "uid", uid);
2317  }
2318  }
2319  }
2320  if (ctx_size && tag == 0x3C0A) {
2321  avio_read(pb, ctx->uid, 16);
2322  } else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) {
2323  mxf_free_metadataset(&ctx, !!ctx_size);
2324  return ret;
2325  }
2326 
2327  /* Accept the 64k local set limit being exceeded (Avid). Don't accept
2328  * it extending past the end of the KLV though (zzuf5.mxf). */
2329  if (avio_tell(pb) > klv_end) {
2330  if (ctx_size) {
2331  ctx->type = type;
2332  mxf_free_metadataset(&ctx, !!ctx_size);
2333  }
2334 
2335  av_log(mxf->fc, AV_LOG_ERROR,
2336  "local tag %#04x extends past end of local set @ %#"PRIx64"\n",
2337  tag, klv->offset);
2338  return AVERROR_INVALIDDATA;
2339  } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
2340  avio_seek(pb, next, SEEK_SET);
2341  }
2342  if (ctx_size) ctx->type = type;
2343  return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
2344 }
2345 
2346 /**
2347  * Matches any partition pack key, in other words:
2348  * - HeaderPartition
2349  * - BodyPartition
2350  * - FooterPartition
2351  * @return non-zero if the key is a partition pack key, zero otherwise
2352  */
2353 static int mxf_is_partition_pack_key(UID key)
2354 {
2355  //NOTE: this is a little lax since it doesn't constraint key[14]
2356  return !memcmp(key, mxf_header_partition_pack_key, 13) &&
2357  key[13] >= 2 && key[13] <= 4;
2358 }
2359 
2360 /**
2361  * Parses a metadata KLV
2362  * @return <0 on error, 0 otherwise
2363  */
2364 static int mxf_parse_klv(MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read,
2365  int ctx_size, enum MXFMetadataSetType type)
2366 {
2367  AVFormatContext *s = mxf->fc;
2368  int res;
2369  if (klv.key[5] == 0x53) {
2370  res = mxf_read_local_tags(mxf, &klv, read, ctx_size, type);
2371  } else {
2372  uint64_t next = avio_tell(s->pb) + klv.length;
2373  res = read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
2374 
2375  /* only seek forward, else this can loop for a long time */
2376  if (avio_tell(s->pb) > next) {
2377  av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
2378  klv.offset);
2379  return AVERROR_INVALIDDATA;
2380  }
2381 
2382  avio_seek(s->pb, next, SEEK_SET);
2383  }
2384  if (res < 0) {
2385  av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
2386  return res;
2387  }
2388  return 0;
2389 }
2390 
2391 /**
2392  * Seeks to the previous partition and parses it, if possible
2393  * @return <= 0 if we should stop parsing, > 0 if we should keep going
2394  */
2395 static int mxf_seek_to_previous_partition(MXFContext *mxf)
2396 {
2397  AVIOContext *pb = mxf->fc->pb;
2398  KLVPacket klv;
2399  int64_t current_partition_ofs;
2400  int ret;
2401 
2402  if (!mxf->current_partition ||
2403  mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell)
2404  return 0; /* we've parsed all partitions */
2405 
2406  /* seek to previous partition */
2407  current_partition_ofs = mxf->current_partition->pack_ofs; //includes run-in
2408  avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET);
2409  mxf->current_partition = NULL;
2410 
2411  av_log(mxf->fc, AV_LOG_TRACE, "seeking to previous partition\n");
2412 
2413  /* Make sure this is actually a PartitionPack, and if so parse it.
2414  * See deadlock2.mxf
2415  */
2416  if ((ret = klv_read_packet(&klv, pb)) < 0) {
2417  av_log(mxf->fc, AV_LOG_ERROR, "failed to read PartitionPack KLV\n");
2418  return ret;
2419  }
2420 
2421  if (!mxf_is_partition_pack_key(klv.key)) {
2422  av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition @ %" PRIx64 " isn't a PartitionPack\n", klv.offset);
2423  return AVERROR_INVALIDDATA;
2424  }
2425 
2426  /* We can't just check ofs >= current_partition_ofs because PreviousPartition
2427  * can point to just before the current partition, causing klv_read_packet()
2428  * to sync back up to it. See deadlock3.mxf
2429  */
2430  if (klv.offset >= current_partition_ofs) {
2431  av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition for PartitionPack @ %"
2432  PRIx64 " indirectly points to itself\n", current_partition_ofs);
2433  return AVERROR_INVALIDDATA;
2434  }
2435 
2436  if ((ret = mxf_parse_klv(mxf, klv, mxf_read_partition_pack, 0, 0)) < 0)
2437  return ret;
2438 
2439  return 1;
2440 }
2441 
2442 /**
2443  * Called when essence is encountered
2444  * @return <= 0 if we should stop parsing, > 0 if we should keep going
2445  */
2446 static int mxf_parse_handle_essence(MXFContext *mxf)
2447 {
2448  AVIOContext *pb = mxf->fc->pb;
2449  int64_t ret;
2450 
2451  if (mxf->parsing_backward) {
2452  return mxf_seek_to_previous_partition(mxf);
2453  } else {
2454  if (!mxf->footer_partition) {
2455  av_log(mxf->fc, AV_LOG_TRACE, "no FooterPartition\n");
2456  return 0;
2457  }
2458 
2459  av_log(mxf->fc, AV_LOG_TRACE, "seeking to FooterPartition\n");
2460 
2461  /* remember where we were so we don't end up seeking further back than this */
2462  mxf->last_forward_tell = avio_tell(pb);
2463 
2464  if (!pb->seekable) {
2465  av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing FooterPartition\n");
2466  return -1;
2467  }
2468 
2469  /* seek to FooterPartition and parse backward */
2470  if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) {
2471  av_log(mxf->fc, AV_LOG_ERROR,
2472  "failed to seek to FooterPartition @ 0x%" PRIx64
2473  " (%"PRId64") - partial file?\n",
2474  mxf->run_in + mxf->footer_partition, ret);
2475  return ret;
2476  }
2477 
2478  mxf->current_partition = NULL;
2479  mxf->parsing_backward = 1;
2480  }
2481 
2482  return 1;
2483 }
2484 
2485 /**
2486  * Called when the next partition or EOF is encountered
2487  * @return <= 0 if we should stop parsing, > 0 if we should keep going
2488  */
2489 static int mxf_parse_handle_partition_or_eof(MXFContext *mxf)
2490 {
2491  return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1;
2492 }
2493 
2494 /**
2495  * Figures out the proper offset and length of the essence container in each partition
2496  */
2497 static void mxf_compute_essence_containers(MXFContext *mxf)
2498 {
2499  int x;
2500 
2501  /* everything is already correct */
2502  if (mxf->op == OPAtom)
2503  return;
2504 
2505  for (x = 0; x < mxf->partitions_count; x++) {
2506  MXFPartition *p = &mxf->partitions[x];
2507 
2508  if (!p->body_sid)
2509  continue; /* BodySID == 0 -> no essence */
2510 
2511  if (x >= mxf->partitions_count - 1)
2512  break; /* FooterPartition - can't compute length (and we don't need to) */
2513 
2514  /* essence container spans to the next partition */
2515  p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset;
2516 
2517  if (p->essence_length < 0) {
2518  /* next ThisPartition < essence_offset */
2519  p->essence_length = 0;
2520  av_log(mxf->fc, AV_LOG_ERROR,
2521  "partition %i: bad ThisPartition = %"PRIX64"\n",
2522  x+1, mxf->partitions[x+1].this_partition);
2523  }
2524  }
2525 }
2526 
2527 static int64_t round_to_kag(int64_t position, int kag_size)
2528 {
2529  /* TODO: account for run-in? the spec isn't clear whether KAG should account for it */
2530  /* NOTE: kag_size may be any integer between 1 - 2^10 */
2531  int64_t ret = (position / kag_size) * kag_size;
2532  return ret == position ? ret : ret + kag_size;
2533 }
2534 
2535 static int is_pcm(enum AVCodecID codec_id)
2536 {
2537  /* we only care about "normal" PCM codecs until we get samples */
2538  return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
2539 }
2540 
2541 /**
2542  * Deal with the case where for some audio atoms EditUnitByteCount is
2543  * very small (2, 4..). In those cases we should read more than one
2544  * sample per call to mxf_read_packet().
2545  */
2546 static void mxf_handle_small_eubc(AVFormatContext *s)
2547 {
2548  MXFContext *mxf = s->priv_data;
2549 
2550  /* assuming non-OPAtom == frame wrapped
2551  * no sane writer would wrap 2 byte PCM packets with 20 byte headers.. */
2552  if (mxf->op != OPAtom)
2553  return;
2554 
2555  /* expect PCM with exactly one index table segment and a small (< 32) EUBC */
2556  if (s->nb_streams != 1 ||
2557  s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
2558  !is_pcm(s->streams[0]->codec->codec_id) ||
2559  mxf->nb_index_tables != 1 ||
2560  mxf->index_tables[0].nb_segments != 1 ||
2561  mxf->index_tables[0].segments[0]->edit_unit_byte_count >= 32)
2562  return;
2563 
2564  /* arbitrarily default to 48 kHz PAL audio frame size */
2565  /* TODO: We could compute this from the ratio between the audio
2566  * and video edit rates for 48 kHz NTSC we could use the
2567  * 1802-1802-1802-1802-1801 pattern. */
2568  mxf->edit_units_per_packet = 1920;
2569 }
2570 
2571 /**
2572  * Deal with the case where OPAtom files does not have any IndexTableSegments.
2573  */
2574 static int mxf_handle_missing_index_segment(MXFContext *mxf)
2575 {
2576  AVFormatContext *s = mxf->fc;
2577  AVStream *st = NULL;
2578  MXFIndexTableSegment *segment = NULL;
2579  MXFPartition *p = NULL;
2580  int essence_partition_count = 0;
2581  int i, ret;
2582 
2583  if (mxf->op != OPAtom)
2584  return 0;
2585 
2586  /* TODO: support raw video without a index if they exist */
2587  if (s->nb_streams != 1 || s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO || !is_pcm(s->streams[0]->codec->codec_id))
2588  return 0;
2589 
2590  /* check if file already has a IndexTableSegment */
2591  for (i = 0; i < mxf->metadata_sets_count; i++) {
2592  if (mxf->metadata_sets[i]->type == IndexTableSegment)
2593  return 0;
2594  }
2595 
2596  /* find the essence partition */
2597  for (i = 0; i < mxf->partitions_count; i++) {
2598  /* BodySID == 0 -> no essence */
2599  if (!mxf->partitions[i].body_sid)
2600  continue;
2601 
2602  p = &mxf->partitions[i];
2603  essence_partition_count++;
2604  }
2605 
2606  /* only handle files with a single essence partition */
2607  if (essence_partition_count != 1)
2608  return 0;
2609 
2610  if (!(segment = av_mallocz(sizeof(*segment))))
2611  return AVERROR(ENOMEM);
2612 
2613  if ((ret = mxf_add_metadata_set(mxf, segment))) {
2614  mxf_free_metadataset((MXFMetadataSet**)&segment, 1);
2615  return ret;
2616  }
2617 
2618  st = s->streams[0];
2619  segment->type = IndexTableSegment;
2620  /* stream will be treated as small EditUnitByteCount */
2621  segment->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
2622  segment->index_start_position = 0;
2623  segment->index_duration = s->streams[0]->duration;
2624  segment->index_sid = p->index_sid;
2625  segment->body_sid = p->body_sid;
2626  return 0;
2627 }
2628 
2629 static void mxf_read_random_index_pack(AVFormatContext *s)
2630 {
2631  MXFContext *mxf = s->priv_data;
2632  uint32_t length;
2633  int64_t file_size, max_rip_length, min_rip_length;
2634  KLVPacket klv;
2635 
2636  if (!s->pb->seekable)
2637  return;
2638 
2639  file_size = avio_size(s->pb);
2640 
2641  /* S377m says to check the RIP length for "silly" values, without defining "silly".
2642  * The limit below assumes a file with nothing but partition packs and a RIP.
2643  * Before changing this, consider that a muxer may place each sample in its own partition.
2644  *
2645  * 105 is the size of the smallest possible PartitionPack
2646  * 12 is the size of each RIP entry
2647  * 28 is the size of the RIP header and footer, assuming an 8-byte BER
2648  */
2649  max_rip_length = ((file_size - mxf->run_in) / 105) * 12 + 28;
2650  max_rip_length = FFMIN(max_rip_length, INT_MAX); //2 GiB and up is also silly
2651 
2652  /* We're only interested in RIPs with at least two entries.. */
2653  min_rip_length = 16+1+24+4;
2654 
2655  /* See S377m section 11 */
2656  avio_seek(s->pb, file_size - 4, SEEK_SET);
2657  length = avio_rb32(s->pb);
2658 
2659  if (length < min_rip_length || length > max_rip_length)
2660  goto end;
2661  avio_seek(s->pb, file_size - length, SEEK_SET);
2662  if (klv_read_packet(&klv, s->pb) < 0 ||
2663  !IS_KLV_KEY(klv.key, mxf_random_index_pack_key) ||
2664  klv.length != length - 20)
2665  goto end;
2666 
2667  avio_skip(s->pb, klv.length - 12);
2668  mxf->footer_partition = avio_rb64(s->pb);
2669 
2670  /* sanity check */
2671  if (mxf->run_in + mxf->footer_partition >= file_size) {
2672  av_log(s, AV_LOG_WARNING, "bad FooterPartition in RIP - ignoring\n");
2673  mxf->footer_partition = 0;
2674  }
2675 
2676 end:
2677  avio_seek(s->pb, mxf->run_in, SEEK_SET);
2678 }
2679 
2680 static int mxf_read_header(AVFormatContext *s)
2681 {
2682  MXFContext *mxf = s->priv_data;
2683  KLVPacket klv;
2684  int64_t essence_offset = 0;
2685  int ret;
2686 
2687  mxf->last_forward_tell = INT64_MAX;
2688  mxf->edit_units_per_packet = 1;
2689 
2690  if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
2691  av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
2692  return AVERROR_INVALIDDATA;
2693  }
2694  avio_seek(s->pb, -14, SEEK_CUR);
2695  mxf->fc = s;
2696  mxf->run_in = avio_tell(s->pb);
2697 
2698  mxf_read_random_index_pack(s);
2699 
2700  while (!avio_feof(s->pb)) {
2701  const MXFMetadataReadTableEntry *metadata;
2702 
2703  if (klv_read_packet(&klv, s->pb) < 0) {
2704  /* EOF - seek to previous partition or stop */
2705  if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
2706  break;
2707  else
2708  continue;
2709  }
2710 
2711  PRINT_KEY(s, "read header", klv.key);
2712  av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
2713  if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
2714  IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
2715  IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) ||
2716  IS_KLV_KEY(klv.key, mxf_system_item_key)) {
2717 
2718  if (!mxf->current_partition) {
2719  av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to first PartitionPack\n");
2720  return AVERROR_INVALIDDATA;
2721  }
2722 
2723  if (!mxf->current_partition->essence_offset) {
2724  /* for OP1a we compute essence_offset
2725  * for OPAtom we point essence_offset after the KL (usually op1a_essence_offset + 20 or 25)
2726  * TODO: for OP1a we could eliminate this entire if statement, always stopping parsing at op1a_essence_offset
2727  * for OPAtom we still need the actual essence_offset though (the KL's length can vary)
2728  */
2729  int64_t op1a_essence_offset =
2730  round_to_kag(mxf->current_partition->this_partition +
2731  mxf->current_partition->pack_length, mxf->current_partition->kag_size) +
2732  round_to_kag(mxf->current_partition->header_byte_count, mxf->current_partition->kag_size) +
2733  round_to_kag(mxf->current_partition->index_byte_count, mxf->current_partition->kag_size);
2734 
2735  if (mxf->op == OPAtom) {
2736  /* point essence_offset to the actual data
2737  * OPAtom has all the essence in one big KLV
2738  */
2739  mxf->current_partition->essence_offset = avio_tell(s->pb);
2740  mxf->current_partition->essence_length = klv.length;
2741  } else {
2742  /* NOTE: op1a_essence_offset may be less than to klv.offset (C0023S01.mxf) */
2743  mxf->current_partition->essence_offset = op1a_essence_offset;
2744  }
2745  }
2746 
2747  if (!essence_offset)
2748  essence_offset = klv.offset;
2749 
2750  /* seek to footer, previous partition or stop */
2751  if (mxf_parse_handle_essence(mxf) <= 0)
2752  break;
2753  continue;
2754  } else if (mxf_is_partition_pack_key(klv.key) && mxf->current_partition) {
2755  /* next partition pack - keep going, seek to previous partition or stop */
2756  if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
2757  break;
2758  else if (mxf->parsing_backward)
2759  continue;
2760  /* we're still parsing forward. proceed to parsing this partition pack */
2761  }
2762 
2763  for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
2764  if (IS_KLV_KEY(klv.key, metadata->key)) {
2765  if ((ret = mxf_parse_klv(mxf, klv, metadata->read, metadata->ctx_size, metadata->type)) < 0)
2766  goto fail;
2767  break;
2768  } else {
2769  av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n",
2770  UID_ARG(klv.key));
2771  }
2772  }
2773  if (!metadata->read)
2774  avio_skip(s->pb, klv.length);
2775  }
2776  /* FIXME avoid seek */
2777  if (!essence_offset) {
2778  av_log(s, AV_LOG_ERROR, "no essence\n");
2779  ret = AVERROR_INVALIDDATA;
2780  goto fail;
2781  }
2782  avio_seek(s->pb, essence_offset, SEEK_SET);
2783 
2784  mxf_compute_essence_containers(mxf);
2785 
2786  /* we need to do this before computing the index tables
2787  * to be able to fill in zero IndexDurations with st->duration */
2788  if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
2789  goto fail;
2790 
2791  mxf_handle_missing_index_segment(mxf);
2792  if ((ret = mxf_compute_index_tables(mxf)) < 0)
2793  goto fail;
2794 
2795  if (mxf->nb_index_tables > 1) {
2796  /* TODO: look up which IndexSID to use via EssenceContainerData */
2797  av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
2798  mxf->nb_index_tables, mxf->index_tables[0].index_sid);
2799  } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom) {
2800  av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
2801  ret = AVERROR_INVALIDDATA;
2802  goto fail;
2803  }
2804 
2805  mxf_handle_small_eubc(s);
2806 
2807  return 0;
2808 fail:
2809  mxf_read_close(s);
2810 
2811  return ret;
2812 }
2813 
2814 /**
2815  * Sets mxf->current_edit_unit based on what offset we're currently at.
2816  * @return next_ofs if OK, <0 on error
2817  */
2818 static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset)
2819 {
2820  int64_t last_ofs = -1, next_ofs = -1;
2821  MXFIndexTable *t = &mxf->index_tables[0];
2822 
2823  /* this is called from the OP1a demuxing logic, which means there
2824  * may be no index tables */
2825  if (mxf->nb_index_tables <= 0)
2826  return -1;
2827 
2828  /* find mxf->current_edit_unit so that the next edit unit starts ahead of current_offset */
2829  while (mxf->current_edit_unit >= 0) {
2830  if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1, NULL, &next_ofs, 0) < 0)
2831  return -1;
2832 
2833  if (next_ofs <= last_ofs) {
2834  /* large next_ofs didn't change or current_edit_unit wrapped
2835  * around this fixes the infinite loop on zzuf3.mxf */
2836  av_log(mxf->fc, AV_LOG_ERROR,
2837  "next_ofs didn't change. not deriving packet timestamps\n");
2838  return -1;
2839  }
2840 
2841  if (next_ofs > current_offset)
2842  break;
2843 
2844  last_ofs = next_ofs;
2845  mxf->current_edit_unit++;
2846  }
2847 
2848  /* not checking mxf->current_edit_unit >= t->nb_ptses here since CBR files may lack IndexEntryArrays */
2849  if (mxf->current_edit_unit < 0)
2850  return -1;
2851 
2852  return next_ofs;
2853 }
2854 
2855 static int mxf_compute_sample_count(MXFContext *mxf, int stream_index,
2856  uint64_t *sample_count)
2857 {
2858  int i, total = 0, size = 0;
2859  AVStream *st = mxf->fc->streams[stream_index];
2860  MXFTrack *track = st->priv_data;
2861  AVRational time_base = av_inv_q(track->edit_rate);
2862  AVRational sample_rate = av_inv_q(st->time_base);
2863  const MXFSamplesPerFrame *spf = NULL;
2864 
2865  if ((sample_rate.num / sample_rate.den) == 48000)
2866  spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base);
2867  if (!spf) {
2868  int remainder = (sample_rate.num * time_base.num) %
2869  (time_base.den * sample_rate.den);
2870  *sample_count = av_q2d(av_mul_q((AVRational){mxf->current_edit_unit, 1},
2871  av_mul_q(sample_rate, time_base)));
2872  if (remainder)
2873  av_log(mxf->fc, AV_LOG_WARNING,
2874  "seeking detected on stream #%d with time base (%d/%d) and "
2875  "sample rate (%d/%d), audio pts won't be accurate.\n",
2876  stream_index, time_base.num, time_base.den,
2877  sample_rate.num, sample_rate.den);
2878  return 0;
2879  }
2880 
2881  while (spf->samples_per_frame[size]) {
2882  total += spf->samples_per_frame[size];
2883  size++;
2884  }
2885 
2886  av_assert2(size);
2887 
2888  *sample_count = (mxf->current_edit_unit / size) * (uint64_t)total;
2889  for (i = 0; i < mxf->current_edit_unit % size; i++) {
2890  *sample_count += spf->samples_per_frame[i];
2891  }
2892 
2893  return 0;
2894 }
2895 
2896 static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec,
2897  AVPacket *pkt)
2898 {
2899  MXFTrack *track = mxf->fc->streams[pkt->stream_index]->priv_data;
2900  int64_t bits_per_sample = codec->bits_per_coded_sample;
2901 
2902  if (!bits_per_sample)
2903  bits_per_sample = av_get_bits_per_sample(codec->codec_id);
2904 
2905  pkt->pts = track->sample_count;
2906 
2907  if ( codec->channels <= 0
2908  || bits_per_sample <= 0
2909  || codec->channels * (int64_t)bits_per_sample < 8)
2910  return AVERROR(EINVAL);
2911  track->sample_count += pkt->size / (codec->channels * (int64_t)bits_per_sample / 8);
2912  return 0;
2913 }
2914 
2915 static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
2916 {
2917  KLVPacket klv;
2918  MXFContext *mxf = s->priv_data;
2919  int ret;
2920 
2921  while ((ret = klv_read_packet(&klv, s->pb)) == 0) {
2922  PRINT_KEY(s, "read packet", klv.key);
2923  av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
2924  if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
2925  ret = mxf_decrypt_triplet(s, pkt, &klv);
2926  if (ret < 0) {
2927  av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
2928  return ret;
2929  }
2930  return 0;
2931  }
2932  if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
2933  IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
2934  int index = mxf_get_stream_index(s, &klv);
2935  int64_t next_ofs, next_klv;
2936  AVStream *st;
2937  MXFTrack *track;
2938  AVCodecContext *codec;
2939 
2940  if (index < 0) {
2941  av_log(s, AV_LOG_ERROR,
2942  "error getting stream index %"PRIu32"\n",
2943  AV_RB32(klv.key + 12));
2944  goto skip;
2945  }
2946 
2947  st = s->streams[index];
2948  track = st->priv_data;
2949 
2950  if (s->streams[index]->discard == AVDISCARD_ALL)
2951  goto skip;
2952 
2953  next_klv = avio_tell(s->pb) + klv.length;
2954  next_ofs = mxf_set_current_edit_unit(mxf, klv.offset);
2955 
2956  if (next_ofs >= 0 && next_klv > next_ofs) {
2957  /* if this check is hit then it's possible OPAtom was treated as OP1a
2958  * truncate the packet since it's probably very large (>2 GiB is common) */
2959  avpriv_request_sample(s,
2960  "OPAtom misinterpreted as OP1a?"
2961  "KLV for edit unit %i extending into "
2962  "next edit unit",
2963  mxf->current_edit_unit);
2964  klv.length = next_ofs - avio_tell(s->pb);
2965  }
2966 
2967  /* check for 8 channels AES3 element */
2968  if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
2969  ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index],
2970  pkt, klv.length);
2971  if (ret < 0) {
2972  av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
2973  return ret;
2974  }
2975  } else {
2976  ret = av_get_packet(s->pb, pkt, klv.length);
2977  if (ret < 0)
2978  return ret;
2979  }
2980  pkt->stream_index = index;
2981  pkt->pos = klv.offset;
2982 
2983  codec = st->codec;
2984 
2985  if (codec->codec_type == AVMEDIA_TYPE_VIDEO && next_ofs >= 0) {
2986  /* mxf->current_edit_unit good - see if we have an
2987  * index table to derive timestamps from */
2988  MXFIndexTable *t = &mxf->index_tables[0];
2989 
2990  if (mxf->nb_index_tables >= 1 && mxf->current_edit_unit < t->nb_ptses) {
2991  pkt->dts = mxf->current_edit_unit + t->first_dts;
2992  pkt->pts = t->ptses[mxf->current_edit_unit];
2993  } else if (track->intra_only) {
2994  /* intra-only -> PTS = EditUnit.
2995  * let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */
2996  pkt->pts = mxf->current_edit_unit;
2997  }
2998  } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2999  ret = mxf_set_audio_pts(mxf, codec, pkt);
3000  if (ret < 0)
3001  return ret;
3002  }
3003 
3004  /* seek for truncated packets */
3005  avio_seek(s->pb, next_klv, SEEK_SET);
3006 
3007  return 0;
3008  } else
3009  skip:
3010  avio_skip(s->pb, klv.length);
3011  }
3012  return avio_feof(s->pb) ? AVERROR_EOF : ret;
3013 }
3014 
3015 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
3016 {
3017  MXFContext *mxf = s->priv_data;
3018  int ret, size;
3019  int64_t ret64, pos, next_pos;
3020  AVStream *st;
3021  MXFIndexTable *t;
3022  int edit_units;
3023 
3024  if (mxf->op != OPAtom)
3025  return mxf_read_packet_old(s, pkt);
3026 
3027  // If we have no streams then we basically are at EOF
3028  if (s->nb_streams < 1)
3029  return AVERROR_EOF;
3030 
3031  /* OPAtom - clip wrapped demuxing */
3032  /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
3033  st = s->streams[0];
3034  t = &mxf->index_tables[0];
3035 
3036  if (mxf->current_edit_unit >= st->duration)
3037  return AVERROR_EOF;
3038 
3039  edit_units = FFMIN(mxf->edit_units_per_packet, st->duration - mxf->current_edit_unit);
3040 
3041  if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, 1)) < 0)
3042  return ret;
3043 
3044  /* compute size by finding the next edit unit or the end of the essence container
3045  * not pretty, but it works */
3046  if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + edit_units, NULL, &next_pos, 0)) < 0 &&
3047  (next_pos = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
3048  av_log(s, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
3049  return AVERROR_INVALIDDATA;
3050  }
3051 
3052  if ((size = next_pos - pos) <= 0) {
3053  av_log(s, AV_LOG_ERROR, "bad size: %i\n", size);
3054  return AVERROR_INVALIDDATA;
3055  }
3056 
3057  if ((ret64 = avio_seek(s->pb, pos, SEEK_SET)) < 0)
3058  return ret64;
3059 
3060  if ((size = av_get_packet(s->pb, pkt, size)) < 0)
3061  return size;
3062 
3063  pkt->stream_index = 0;
3064 
3065  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && t->ptses &&
3066  mxf->current_edit_unit >= 0 && mxf->current_edit_unit < t->nb_ptses) {
3067  pkt->dts = mxf->current_edit_unit + t->first_dts;
3068  pkt->pts = t->ptses[mxf->current_edit_unit];
3069  } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3070  int ret = mxf_set_audio_pts(mxf, st->codec, pkt);
3071  if (ret < 0)
3072  return ret;
3073  }
3074 
3075  mxf->current_edit_unit += edit_units;
3076 
3077  return 0;
3078 }
3079 
3080 static int mxf_read_close(AVFormatContext *s)
3081 {
3082  MXFContext *mxf = s->priv_data;
3083  int i;
3084 
3085  av_freep(&mxf->packages_refs);
3086 
3087  for (i = 0; i < s->nb_streams; i++)
3088  s->streams[i]->priv_data = NULL;
3089 
3090  for (i = 0; i < mxf->metadata_sets_count; i++) {
3091  mxf_free_metadataset(mxf->metadata_sets + i, 1);
3092  }
3093  av_freep(&mxf->partitions);
3094  av_freep(&mxf->metadata_sets);
3095  av_freep(&mxf->aesc);
3096  av_freep(&mxf->local_tags);
3097 
3098  if (mxf->index_tables) {
3099  for (i = 0; i < mxf->nb_index_tables; i++) {
3100  av_freep(&mxf->index_tables[i].segments);
3101  av_freep(&mxf->index_tables[i].ptses);
3102  av_freep(&mxf->index_tables[i].fake_index);
3103  av_freep(&mxf->index_tables[i].offsets);
3104  }
3105  }
3106  av_freep(&mxf->index_tables);
3107 
3108  return 0;
3109 }
3110 
3111 static int mxf_probe(AVProbeData *p) {
3112  const uint8_t *bufp = p->buf;
3113  const uint8_t *end = p->buf + p->buf_size;
3114 
3115  if (p->buf_size < sizeof(mxf_header_partition_pack_key))
3116  return 0;
3117 
3118  /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
3119  end -= sizeof(mxf_header_partition_pack_key);
3120 
3121  for (; bufp < end;) {
3122  if (!((bufp[13] - 1) & 0xF2)){
3123  if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) &&
3124  AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) &&
3125  AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) &&
3126  AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12))
3127  return AVPROBE_SCORE_MAX;
3128  bufp ++;
3129  } else
3130  bufp += 10;
3131  }
3132 
3133  return 0;
3134 }
3135 
3136 /* rudimentary byte seek */
3137 /* XXX: use MXF Index */
3138 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3139 {
3140  AVStream *st = s->streams[stream_index];
3141  int64_t seconds;
3142  MXFContext* mxf = s->priv_data;
3143  int64_t seekpos;
3144  int i, ret;
3145  MXFIndexTable *t;
3146  MXFTrack *source_track = st->priv_data;
3147 
3148  /* if audio then truncate sample_time to EditRate */
3149  if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3150  sample_time = av_rescale_q(sample_time, st->time_base,
3151  av_inv_q(source_track->edit_rate));
3152 
3153  if (mxf->nb_index_tables <= 0) {
3154  if (!s->bit_rate)
3155  return AVERROR_INVALIDDATA;
3156  if (sample_time < 0)
3157  sample_time = 0;
3158  seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
3159 
3160  seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
3161  if (seekpos < 0)
3162  return seekpos;
3163 
3164  ff_update_cur_dts(s, st, sample_time);
3165  mxf->current_edit_unit = sample_time;
3166  } else {
3167  t = &mxf->index_tables[0];
3168 
3169  /* clamp above zero, else ff_index_search_timestamp() returns negative
3170  * this also means we allow seeking before the start */
3171  sample_time = FFMAX(sample_time, 0);
3172 
3173  if (t->fake_index) {
3174  /* behave as if we have a proper index */
3175  if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
3176  return sample_time;
3177  /* get the stored order index from the display order index */
3178  sample_time += t->offsets[sample_time];
3179  } else {
3180  /* no IndexEntryArray (one or more CBR segments)
3181  * make sure we don't seek past the end */
3182  sample_time = FFMIN(sample_time, source_track->original_duration - 1);
3183  }
3184 
3185  if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, 1)) < 0)
3186  return ret;
3187 
3188  ff_update_cur_dts(s, st, sample_time);
3189  mxf->current_edit_unit = sample_time;
3190  avio_seek(s->pb, seekpos, SEEK_SET);
3191  }
3192 
3193  // Update all tracks sample count
3194  for (i = 0; i < s->nb_streams; i++) {
3195  AVStream *cur_st = s->streams[i];
3196  MXFTrack *cur_track = cur_st->priv_data;
3197  uint64_t current_sample_count = 0;
3198  if (cur_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3199  ret = mxf_compute_sample_count(mxf, i, &current_sample_count);
3200  if (ret < 0)
3201  return ret;
3202 
3203  cur_track->sample_count = current_sample_count;
3204  }
3205  }
3206  return 0;
3207 }
3208 
3209 AVInputFormat ff_mxf_demuxer = {
3210  .name = "mxf",
3211  .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3212  .flags = AVFMT_SEEK_TO_PTS,
3213  .priv_data_size = sizeof(MXFContext),
3214  .read_probe = mxf_probe,
3215  .read_header = mxf_read_header,
3216  .read_packet = mxf_read_packet,
3217  .read_close = mxf_read_close,
3218  .read_seek = mxf_read_seek,
3219 };
mxf_crypto_source_container_ul
static const uint8_t mxf_crypto_source_container_ul[]
Definition: mxfdec.c:289
mxf_compute_essence_containers
static void mxf_compute_essence_containers(MXFContext *mxf)
Figures out the proper offset and length of the essence container in each partition.
Definition: mxfdec.c:2497
AV_CODEC_ID_PCM_S24BE
Definition: avcodec.h:344
AV_PIX_FMT_UYVY422
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:83
MXFTrack::type
enum MXFMetadataSetType type
Definition: mxfdec.c:153
NULL
#define NULL
Definition: coverity.c:32
AVSTREAM_PARSE_TIMESTAMPS
full parsing and interpolation of timestamps for frames not starting on a packet boundary ...
Definition: avformat.h:776
mxf_parse_structural_metadata
static int mxf_parse_structural_metadata(MXFContext *mxf)
Definition: mxfdec.c:1800
AV_CODEC_ID_PCM_S24DAUD
Definition: avcodec.h:347
MXFMetadataSetType
MXFMetadataSetType
Definition: mxf.h:30
s
const char * s
Definition: avisynth_c.h:631
AVIOContext
Bytestream IO Context.
Definition: avio.h:111
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AV_CODEC_ID_NONE
Definition: avcodec.h:103
avio_size
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:282
MXFSequence::origin
uint8_t origin
Definition: mxfdec.c:118
MXFDescriptor::component_depth
unsigned int component_depth
Definition: mxfdec.c:181
MXFContext::current_klv_data
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Definition: mxfdec.c:252
mxf_read_index_table_segment
static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:909
Descriptor
Definition: mxf.h:39
MXFTimecodeComponent::tc
AVTimecode tc
Definition: mxfdec.c:127
MXFPackage::comment_refs
UID * comment_refs
Definition: mxfdec.c:217
mxf_metadata_read_table
static const MXFMetadataReadTableEntry mxf_metadata_read_table[]
Definition: mxfdec.c:2234
MXFContext::current_edit_unit
int current_edit_unit
Definition: mxfdec.c:259
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Definition: mxfdec.c:140
PRINT_KEY
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Definition: mxf.h:115
MXFIndexTable::index_sid
int index_sid
Definition: mxfdec.c:228
klv_read_packet
static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
Definition: mxfdec.c:367
MXFSequence::structural_components_refs
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Definition: mxfdec.c:115
MXFOP
MXFOP
Definition: mxfdec.c:64
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
mxf_seek_to_previous_partition
static int mxf_seek_to_previous_partition(MXFContext *mxf)
Seeks to the previous partition and parses it, if possible.
Definition: mxfdec.c:2395
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int edit_unit_byte_count
Definition: mxfdec.c:195
MXFStructuralComponent::type
enum MXFMetadataSetType type
Definition: mxfdec.c:103
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1448
mxf_probe
static int mxf_probe(AVProbeData *p)
Definition: mxfdec.c:3111
av_shrink_packet
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Reduce packet size, correctly zeroing padding.
Definition: avpacket.c:103
avpriv_set_pts_info
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Set the time base and wrapping info for a given stream.
Definition: utils.c:4083
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Definition: mxfdec.c:232
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Definition: mxfdec.c:139
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Definition: mxfdec.c:155
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Definition: mxfdec.c:2629
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Definition: avcodec.h:178
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
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numerator
Definition: rational.h:44
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stream index in AVFormatContext
Definition: avformat.h:843
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Definition: mxfdec.c:2177
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Definition: avcodec.h:1424
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Definition: mxf.h:34
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Definition: mxfdec.c:251
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fseek() equivalent for AVIOContext.
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enum MXFMetadataSetType type
Definition: mxfdec.c:277
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void av_aes_crypt(AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
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static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
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static int mxf_uid_to_str(UID uid, char **str)
Definition: mxfdec.c:1551
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Definition: mxfdec.c:393
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enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1722
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Definition: mxfdec.c:154
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Definition: regdef.h:69
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Definition: mxfdec.c:186
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Definition: mxf.h:62
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Definition: mxf.h:63
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Definition: avformat.h:862
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Definition: aviobuf.c:277
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Definition: mxfdec.c:147
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Definition: avcodec.h:689
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Definition: demuxing_decoding.c:54
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Definition: mxfdec.c:71
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Internal version of av_index_search_timestamp.
Definition: utils.c:1754
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unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:675
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Definition: mxfdec.c:1543
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uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
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Definition: flacdsp_template.c:44
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Definition: mxfdec.c:98
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Read a UTF-16 string from pb and convert it to UTF-8.
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Definition: mxfdec.c:216
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Definition: mxf.h:70
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Parses a metadata KLV.
Definition: mxfdec.c:2364
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Definition: mxfdec.c:166
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Take ownership of a key that's been allocated with av_malloc() or another memory allocation function...
Definition: dict.h:75
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Definition: mxfdec.c:70
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Called when the next partition or EOF is encountered.
Definition: mxfdec.c:2489
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static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
Definition: mxfdec.c:2288
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Definition: mxfdec.c:3015
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Format I/O context.
Definition: avformat.h:1273
OP2a
Definition: mxfdec.c:68
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Definition: mxfdec.c:174
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Definition: mxfenc.c:1804
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Update cur_dts of all streams based on the given timestamp and AVStream.
Definition: utils.c:1659
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Deal with the case where OPAtom files does not have any IndexTableSegments.
Definition: mxfdec.c:2574
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static const uint8_t mxf_indirect_value_utf16le[]
Definition: mxfdec.c:296
Footer
Definition: mxfdec.c:61
avpriv_request_sample
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
MXFContext::packages_refs
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Definition: mxfdec.c:243
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Definition: audio_convert.c:194
MXFPackage::tracks_refs
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Definition: mxfdec.c:212
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#define av_malloc(s)
Definition: tableprint_vlc.h:31
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Definition: mxfdec.c:231
ff_mxf_get_samples_per_frame
const MXFSamplesPerFrame * ff_mxf_get_samples_per_frame(AVFormatContext *s, AVRational time_base)
Definition: mxf.c:151
AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:195
mxf_avid_essence_element_key
static const uint8_t mxf_avid_essence_element_key[]
Definition: mxfdec.c:285
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int bits_per_sample
Definition: mxfdec.c:179
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#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
Clip
Definition: mxfdec.c:267
AV_LOG_TRACE
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
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unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:690
AV_TIMECODE_FLAG_DROPFRAME
timecode is drop frame
Definition: timecode.h:36
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
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AVRational index_edit_rate
Definition: mxfdec.c:198
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enum AVStreamParseType need_parsing
Definition: avformat.h:1034
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int id
Format-specific stream ID.
Definition: avformat.h:849
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static int mxf_read_close(AVFormatContext *s)
Definition: mxfdec.c:3080
AV_CODEC_ID_AAC
Definition: avcodec.h:426
KLVPacket
Definition: mxf.h:61
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1617
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:3749
mxf_add_umid_metadata
static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage *package)
Definition: mxfdec.c:1590
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVFormatContext::streams
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1341
UID_ARG
#define UID_ARG(x)
Definition: mxf.h:92
mxf_absolute_bodysid_offset
static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
Computes the absolute file offset of the given essence container offset.
Definition: mxfdec.c:1235
MXFPartition::complete
int complete
Definition: mxfdec.c:80
mxf_klv_key
static const uint8_t mxf_klv_key[]
Definition: mxfdec.c:287
MXFMetadataReadFunc
int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:271
av_q2d
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:80
mxf_compute_index_tables
static int mxf_compute_index_tables(MXFContext *mxf)
Sorts and collects index table segments into index tables.
Definition: mxfdec.c:1451
MXFIndexTable::segments
MXFIndexTableSegment ** segments
Definition: mxfdec.c:234
ff_mxf_codec_uls
const MXFCodecUL ff_mxf_codec_uls[]
Definition: mxf.c:36
AVPacket::data
uint8_t * data
Definition: avcodec.h:1423
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
mxf_sony_mpeg4_extradata
static const uint8_t mxf_sony_mpeg4_extradata[]
Definition: mxfdec.c:293
tag
uint32_t tag
Definition: movenc.c:1334
Frame
Definition: mxfdec.c:266
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
mxf_avid_project_name
static const uint8_t mxf_avid_project_name[]
Definition: mxfdec.c:294
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
av_get_packet
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:244
OP1b
Definition: mxfdec.c:66
Track
Definition: ismindex.c:71
size
ptrdiff_t size
Definition: opengl_enc.c:101
mxf_read_utf16_string
static int mxf_read_utf16_string(AVIOContext *pb, int size, char **str, int be)
Definition: mxfdec.c:824
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:757
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:390
AVCodecContext::bits_per_coded_sample
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2996
mxf_intra_only_essence_container_uls
static const MXFCodecUL mxf_intra_only_essence_container_uls[]
Definition: mxfdec.c:1136
MXFDescriptor::vert_subsampling
unsigned int vert_subsampling
Definition: mxfdec.c:183
MXFTrack::intra_only
int intra_only
Definition: mxfdec.c:159
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
MXFPartition::kag_size
int32_t kag_size
Definition: mxfdec.c:88
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:538
mxf_random_index_pack_key
static const uint8_t mxf_random_index_pack_key[]
Definition: mxfdec.c:292
mxf_get_sorted_table_segments
static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
Definition: mxfdec.c:1167
mxf_resolve_multidescriptor
static MXFDescriptor * mxf_resolve_multidescriptor(MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
Definition: mxfdec.c:1647
AV_CODEC_ID_DVVIDEO
Definition: avcodec.h:132
MXFTrack::track_number
uint8_t track_number[4]
Definition: mxfdec.c:157
mxf_timestamp_to_str
static int mxf_timestamp_to_str(uint64_t timestamp, char **str)
Definition: mxfdec.c:2136
MXFTrack::original_duration
int64_t original_duration
Definition: mxfdec.c:161
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:140
av_timecode_init
int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
Init a timecode struct with the passed parameters.
Definition: timecode.c:182
SET_UID_METADATA
#define SET_UID_METADATA(pb, name, var, str)
Definition: mxfdec.c:2170
mxf_read_sync
static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
Definition: mxfdec.c:354
AVINDEX_KEYFRAME
#define AVINDEX_KEYFRAME
Definition: avformat.h:791
MXFContext::metadata_sets_count
int metadata_sets_count
Definition: mxfdec.c:246
MXFDescriptor::essence_container_ul
UID essence_container_ul
Definition: mxfdec.c:167
AV_CODEC_ID_PCM_ALAW
Definition: avcodec.h:338
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
MXFStructuralComponent::start_position
int64_t start_position
Definition: mxfdec.c:107
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
MXFContext::last_forward_partition
int last_forward_partition
Definition: mxfdec.c:258
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3392
AVFormatContext::metadata
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1485
mxf_read_timecode_component
static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:741
MXFPartitionType
MXFPartitionType
Definition: mxfdec.c:58
mxf_read_pixel_layout
static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
Definition: mxfdec.c:946
mxf_resolve_timecode_component
static MXFTimecodeComponent * mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref)
Definition: mxfdec.c:1610
MXFDescriptor::essence_codec_ul
UID essence_codec_ul
Definition: mxfdec.c:168
MXFIndexTableSegment::temporal_offset_entries
int8_t * temporal_offset_entries
Definition: mxfdec.c:201
mxf_add_timecode_metadata
static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc)
Definition: mxfdec.c:1602
AVERROR
#define AVERROR(e)
Definition: error.h:43
mxf_read_sequence
static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:790
mxf_edit_unit_absolute_offset
static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag)
Definition: mxfdec.c:1285
MXFPackage::descriptor
MXFDescriptor * descriptor
Definition: mxfdec.c:214
AVIndexEntry::timestamp
int64_t timestamp
Timestamp in AVStream.time_base units, preferably the time from which on correctly decoded frames are...
Definition: avformat.h:785
MXFIndexTableSegment::index_start_position
uint64_t index_start_position
Definition: mxfdec.c:199
MXFIndexTable::nb_ptses
int nb_ptses
Definition: mxfdec.c:230
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
mxf_read_index_entry_array
static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
Definition: mxfdec.c:883
MXFCodecUL::matching_len
unsigned matching_len
Definition: mxf.h:69
mxf_intra_only_picture_essence_coding_uls
static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[]
Definition: mxfdec.c:1142
OneField
Definition: mxf.h:56
arg
const char * arg
Definition: jacosubdec.c:66
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:194
KLVPacket::length
uint64_t length
Definition: mxf.h:64
mxf_sound_essence_container_uls
static const MXFCodecUL mxf_sound_essence_container_uls[]
Definition: mxfdec.c:1148
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
length
GLsizei GLsizei * length
Definition: opengl_enc.c:115
mxf_parse_handle_essence
static int mxf_parse_handle_essence(MXFContext *mxf)
Called when essence is encountered.
Definition: mxfdec.c:2446
IS_KLV_KEY
#define IS_KLV_KEY(x, y)
Definition: mxfdec.c:299
av_aes_alloc
struct AVAES * av_aes_alloc(void)
Allocate an AVAES context.
Definition: aes.c:45
round_to_kag
static int64_t round_to_kag(int64_t position, int kag_size)
Definition: mxfdec.c:2527
codec_id
enum AVCodecID codec_id
Definition: mov_chan.c:433
MXFTrack::track_id
int track_id
Definition: mxfdec.c:156
offset
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
count
GLsizei count
Definition: opengl_enc.c:109
MXFPackage::package_uid
UID package_uid
Definition: mxfdec.c:210
FFMAX
#define FFMAX(a, b)
Definition: common.h:79
MXFPartition::essence_length
int64_t essence_length
Definition: mxfdec.c:87
fail
#define fail()
Definition: checkasm.h:57
mxf_read_package
static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:859
mxf_read_source_clip
static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:719
MXFSequence::duration
int64_t duration
Definition: mxfdec.c:117
mxf_match_uid
static int mxf_match_uid(const UID key, const UID uid, int len)
Definition: mxfdec.c:1087
MXFContext::packages_count
int packages_count
Definition: mxfdec.c:244
AVSTREAM_PARSE_HEADERS
Only parse headers, do not repack.
Definition: avformat.h:775
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:529
mxf_resolve_sourceclip
static MXFStructuralComponent * mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref)
Definition: mxfdec.c:1700
AVStream::codec
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:861
MXFPartition::index_byte_count
int64_t index_byte_count
Definition: mxfdec.c:90
AVProbeData::buf_size
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:451
ff_mxf_decode_pixel_layout
int ff_mxf_decode_pixel_layout(const char pixel_layout[16], enum AVPixelFormat *pix_fmt)
Definition: mxf.c:118
ff_mxf_pixel_format_uls
const MXFCodecUL ff_mxf_pixel_format_uls[]
Definition: mxf.c:76
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
segment
Definition: hls.c:68
AVFormatContext::nb_streams
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1329
MXFIndexTable::nb_segments
int nb_segments
Definition: mxfdec.c:233
ff_generate_avci_extradata
int ff_generate_avci_extradata(AVStream *st)
Generate standard extradata for AVC-Intra based on width/height and field order.
Definition: utils.c:4423
mxf_get_codec_ul
static const MXFCodecUL * mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
Definition: mxfdec.c:1097
mxf_jp2k_rsiz
static const uint8_t mxf_jp2k_rsiz[]
Definition: mxfdec.c:295
MXFContext::partitions
MXFPartition * partitions
Definition: mxfdec.c:240
MXFIndexTable::offsets
int8_t * offsets
Definition: mxfdec.c:236
MXFIndexTableSegment::type
enum MXFMetadataSetType type
Definition: mxfdec.c:194
mxf_essence_element_key
static const uint8_t mxf_essence_element_key[]
Definition: mxfdec.c:284
mxf_resolve_strong_ref
static void * mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
Definition: mxfdec.c:1107
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:160
MXFContext::local_tags_count
int local_tags_count
Definition: mxfdec.c:250
MXFDescriptor::horiz_subsampling
unsigned int horiz_subsampling
Definition: mxfdec.c:182
PRIxUID
#define PRIxUID
Definition: mxf.h:86
av_rescale
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:127
mxf_resolve_essence_group_choice
static MXFStructuralComponent * mxf_resolve_essence_group_choice(MXFContext *mxf, MXFEssenceGroup *essence_group)
Definition: mxfdec.c:1673
mxf_encrypted_triplet_key
static const uint8_t mxf_encrypted_triplet_key[]
Definition: mxfdec.c:290
FFMIN
#define FFMIN(a, b)
Definition: common.h:81
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:78
MXFDescriptor::pix_fmt
enum AVPixelFormat pix_fmt
Definition: mxfdec.c:189
read_probe
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
MXFSequence::uid
UID uid
Definition: mxfdec.c:112
MXFPartition::essence_offset
int64_t essence_offset
absolute offset of essence
Definition: mxfdec.c:86
MXFTimecodeComponent::rate
struct AVRational rate
Definition: mxfdec.c:126
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1681
mxf_parse_package_comments
static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
Definition: mxfdec.c:1718
MXFContext::edit_units_per_packet
int edit_units_per_packet
how many edit units to read at a time (PCM, OPAtom)
Definition: mxfdec.c:262
value
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
MXFContext::last_forward_tell
int64_t last_forward_tell
Definition: mxfdec.c:257
mxf_header_partition_pack_key
static const uint8_t mxf_header_partition_pack_key[]
Definition: mxfdec.c:283
int32_t
int32_t
Definition: audio_convert.c:194
mxf_read_primer_pack
static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:484
OP2b
Definition: mxfdec.c:69
n
int n
Definition: avisynth_c.h:547
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:916
MXFPartition::this_partition
int64_t this_partition
Definition: mxfdec.c:85
mxf_decrypt_triplet
static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
Definition: mxfdec.c:421
mxf_read_identification_metadata
static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
Definition: mxfdec.c:2184
mxf_get_stream_index
static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
Definition: mxfdec.c:378
mxf_handle_small_eubc
static void mxf_handle_small_eubc(AVFormatContext *s)
Deal with the case where for some audio atoms EditUnitByteCount is very small (2, 4...
Definition: mxfdec.c:2546
ff_mxf_data_definition_uls
const MXFCodecUL ff_mxf_data_definition_uls[]
SMPTE RP224 http://www.smpte-ra.org/mdd/index.html.
Definition: mxf.c:28
MXFDescriptor::sub_descriptors_refs
UID * sub_descriptors_refs
Definition: mxfdec.c:184
mxf_read_essence_group
static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:810
AV_CODEC_ID_PCM_S16BE
Definition: avcodec.h:332
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:107
AV_FIELD_TT
Definition: avcodec.h:1487
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:36
le
uint8_t le
Definition: crc.c:294
avcodec_get_name
const char * avcodec_get_name(enum AVCodecID id)
Get the name of a codec.
Definition: utils.c:3035
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:623
MXFIndexTableSegment::index_duration
uint64_t index_duration
Definition: mxfdec.c:200
FF_PROFILE_JPEG2000_DCINEMA_4K
#define FF_PROFILE_JPEG2000_DCINEMA_4K
Definition: avcodec.h:3187
AVStream
Stream structure.
Definition: avformat.h:842
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
mxf_data_essence_descriptor
static const char *const mxf_data_essence_descriptor[]
Definition: mxfdec.c:1163
mxf_read_strong_ref_array
static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
Definition: mxfdec.c:693
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
av_aes_init
int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)
Initialize an AVAES context.
Definition: aes.c:194
mxf_read_tagged_value
static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:1071
sample_rate
sample_rate
Definition: ffmpeg_filter.c:182
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
AVCodecContext::codec_type
enum AVMediaType codec_type
Definition: avcodec.h:1510
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:1519
timecode.h
Timecode helpers header.
MXFDescriptor::sub_descriptors_count
int sub_descriptors_count
Definition: mxfdec.c:185
AVCodecContext::sample_rate
int sample_rate
samples per second
Definition: avcodec.h:2262
MXFContext::nb_index_tables
int nb_index_tables
Definition: mxfdec.c:260
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1315
mxf_read_generic_descriptor
static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:966
mxf_encrypted_essence_container
static const uint8_t mxf_encrypted_essence_container[]
Definition: mxfdec.c:291
mxf_metadataset_init
static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type)
Definition: mxfdec.c:2274
OP1a
Definition: mxfdec.c:65
MXFSamplesPerFrame::samples_per_frame
int samples_per_frame[6]
Definition: mxf.h:75
AV_RN16
#define AV_RN16(p)
Definition: intreadwrite.h:360
AVCodecContext
main external API structure.
Definition: avcodec.h:1502
MXFSequence::type
enum MXFMetadataSetType type
Definition: mxfdec.c:113
AVCodecContext::codec_tag
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1534
ff_alloc_extradata
int ff_alloc_extradata(AVCodecContext *avctx, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:2924
buf
void * buf
Definition: avisynth_c.h:553
MXFContext::run_in
int run_in
Definition: mxfdec.c:254
type
GLint GLenum type
Definition: opengl_enc.c:105
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:69
MXFPackage::comment_count
int comment_count
Definition: mxfdec.c:218
mxf_data_essence_container_uls
static const MXFCodecUL mxf_data_essence_container_uls[]
Definition: mxfdec.c:1158
AV_PIX_FMT_XYZ12
#define AV_PIX_FMT_XYZ12
Definition: pixfmt.h:418
MXFDescriptor::aspect_ratio
AVRational aspect_ratio
Definition: mxfdec.c:171
index
int index
Definition: gxfenc.c:89
FullFrame
Definition: mxf.h:54
AVRational
rational number numerator/denominator
Definition: rational.h:43
mxf_read_partition_pack
static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:510
MXFPartition::type
MXFPartitionType type
Definition: mxfdec.c:81
AVStream::display_aspect_ratio
AVRational display_aspect_ratio
display aspect ratio (0 if unknown)
Definition: avformat.h:1180
mxf_system_item_key
static const uint8_t mxf_system_item_key[]
Definition: mxfdec.c:286
MXFContext::aesc
struct AVAES * aesc
Definition: mxfdec.c:248
mxf_resolve_source_package
static MXFPackage * mxf_resolve_source_package(MXFContext *mxf, UID package_uid)
Definition: mxfdec.c:1631
MXFContext::fc
AVFormatContext * fc
Definition: mxfdec.c:247
AVFMT_SEEK_TO_PTS
#define AVFMT_SEEK_TO_PTS
Seeking is based on PTS.
Definition: avformat.h:506
AV_CODEC_ID_PCM_S24LE
Definition: avcodec.h:343
MXFDescriptor::extradata
uint8_t * extradata
Definition: mxfdec.c:187
MXFPackage::package_ul
UID package_ul
Definition: mxfdec.c:211
MXFContext::partitions_count
unsigned partitions_count
Definition: mxfdec.c:241
MXFCryptoContext::type
enum MXFMetadataSetType type
Definition: mxfdec.c:97
MXFDescriptor::sample_rate
AVRational sample_rate
Definition: mxfdec.c:170
snprintf
#define snprintf
Definition: snprintf.h:34
AV_CODEC_ID_MP2
Definition: avcodec.h:424
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:448
MXFCodecUL
Definition: mxf.h:67
AV_RN32
#define AV_RN32(p)
Definition: intreadwrite.h:364
MXFContext::local_tags
uint8_t * local_tags
Definition: mxfdec.c:249
AV_FIELD_PROGRESSIVE
Definition: avcodec.h:1486
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vec...
Definition: mem.c:260
MXFDescriptor::channels
int channels
Definition: mxfdec.c:178
READ_STR16
#define READ_STR16(type, big_endian)
Definition: mxfdec.c:850
mxf_indirect_value_utf16be
static const uint8_t mxf_indirect_value_utf16be[]
Definition: mxfdec.c:297
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:133
flags
static int flags
Definition: cpu.c:47
klv_decode_ber_length
static int64_t klv_decode_ber_length(AVIOContext *pb)
Definition: mxfdec.c:339
MXFWrappingScheme
MXFWrappingScheme
Definition: mxfdec.c:265
MXFEssenceGroup::duration
int64_t duration
Definition: mxfdec.c:141
AV_CODEC_ID_JPEG2000
Definition: avcodec.h:196
av_timecode_make_string
char * av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
Load timecode string in buf.
Definition: timecode.c:84
AV_FIELD_BB
Definition: avcodec.h:1488
FF_PROFILE_JPEG2000_DCINEMA_2K
#define FF_PROFILE_JPEG2000_DCINEMA_2K
Definition: avcodec.h:3186
mxf_read_pulldown_component
static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:758
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:901
OP3b
Definition: mxfdec.c:72
mxf_parse_physical_source_package
static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st)
Definition: mxfdec.c:1740
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
AVFormatContext::key
const uint8_t * key
Definition: avformat.h:1421
MXFContext::parsing_backward
int parsing_backward
Definition: mxfdec.c:256
op
static int op(uint8_t **dst, const uint8_t *dst_end, GetByteContext *gb, int pixel, int count, int *x, int width, int linesize)
Perform decode operation.
Definition: anm.c:78
AVSTREAM_PARSE_FULL
full parsing and repack
Definition: avformat.h:774
avformat.h
Main libavformat public API header.
mxf_read_content_storage
static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:706
MXFPackage::tracks_count
int tracks_count
Definition: mxfdec.c:213
Sequence
Definition: mxf.h:37
MXFIndexTable::body_sid
int body_sid
Definition: mxfdec.c:229
if
if(ret< 0)
Definition: vf_mcdeint.c:280
mxf_picture_essence_container_uls
static const MXFCodecUL mxf_picture_essence_container_uls[]
Definition: mxfdec.c:1122
avio_get_str16be
int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen)
mxf_set_audio_pts
static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec, AVPacket *pkt)
Definition: mxfdec.c:2896
MXFDescriptor::height
int height
Definition: mxfdec.c:173
MXFDescriptor::codec_ul
UID codec_ul
Definition: mxfdec.c:169
OPAtom
Definition: mxfdec.c:74
AVStream::start_time
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:894
MXFMetadataReadTableEntry::read
MXFMetadataReadFunc * read
Definition: mxfdec.c:275
av_dict_set_int
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it...
Definition: dict.c:143
OP1c
Definition: mxfdec.c:67
OP3c
Definition: mxfdec.c:73
AV_CODEC_ID_PCM_S16LE
Definition: avcodec.h:331
MXFDescriptor::field_dominance
int field_dominance
Definition: mxfdec.c:177
mxf_free_metadataset
static void mxf_free_metadataset(MXFMetadataSet **ctx, int freectx)
Definition: mxfdec.c:301
av_realloc_array
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:208
ff_mxf_demuxer
AVInputFormat ff_mxf_demuxer
Definition: mxfdec.c:3209
MXFPackage::uid
UID uid
Definition: mxfdec.c:208
AVRational::den
int den
denominator
Definition: rational.h:45
MXFIndexTable::fake_index
AVIndexEntry * fake_index
Definition: mxfdec.c:235
MXFPartition::pack_ofs
int64_t pack_ofs
absolute offset of pack in file, including run-in
Definition: mxfdec.c:92
MXFSequence::structural_components_count
int structural_components_count
Definition: mxfdec.c:116
MXFSequence::data_definition_ul
UID data_definition_ul
Definition: mxfdec.c:114
mxf_read_cryptographic_context
static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:683
MXFMetadataSet::type
enum MXFMetadataSetType type
Definition: mxfdec.c:223
MXFPartition::body_sid
int body_sid
Definition: mxfdec.c:84
mxf_compute_ptses_fake_index
static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
Definition: mxfdec.c:1333
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
MXFContext::current_klv_index
int current_klv_index
Definition: mxfdec.c:253
ff_mxf_codec_tag_uls
const MXFCodecUL ff_mxf_codec_tag_uls[]
Definition: mxf.c:82
len
int len
Definition: vorbis_enc_data.h:452
MXFIndexTableSegment::stream_offset_entries
uint64_t * stream_offset_entries
Definition: mxfdec.c:203
mxf_is_partition_pack_key
static int mxf_is_partition_pack_key(UID key)
Matches any partition pack key, in other words:
Definition: mxfdec.c:2353
mxf_read_preface_metadata
static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:2221
AVCodecContext::channels
int channels
number of audio channels
Definition: avcodec.h:2263
mxf_add_metadata_set
static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
Definition: mxfdec.c:670
MXFContext::op
MXFOP op
Definition: mxfdec.c:242
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1301
mxf_essence_container_end
static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
Returns the end position of the essence container with given BodySID, or zero if unknown.
Definition: mxfdec.c:1264
MXFDescriptor::extradata_size
int extradata_size
Definition: mxfdec.c:188
MXFTrack::uid
UID uid
Definition: mxfdec.c:152
mxf_read_indirect_value
static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size)
Definition: mxfdec.c:1053
layout
uint64_t layout
Definition: channel_layout.c:77
mxf_read_track
static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
Definition: mxfdec.c:769
SET_STR_METADATA
#define SET_STR_METADATA(pb, name, str)
Definition: mxfdec.c:2164
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1422
av_mallocz_array
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
mxf_set_current_edit_unit
static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset)
Sets mxf->current_edit_unit based on what offset we're currently at.
Definition: mxfdec.c:2818
AVFormatContext::bit_rate
int bit_rate
Total stream bitrate in bit/s, 0 if not available.
Definition: avformat.h:1375
MXFDescriptor::duration
int64_t duration
Definition: mxfdec.c:180
MXFContext::metadata_sets
MXFMetadataSet ** metadata_sets
Definition: mxfdec.c:245
mxf_read_packet_old
static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
Definition: mxfdec.c:2915
mxf_compute_sample_count
static int mxf_compute_sample_count(MXFContext *mxf, int stream_index, uint64_t *sample_count)
Definition: mxfdec.c:2855
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2259
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:628
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:193
AV_CODEC_ID_PCM_S32LE
Definition: avcodec.h:339
MXF_BFF
#define MXF_BFF
Definition: mxfdec.c:176
AV_CODEC_ID_RAWVIDEO
Definition: avcodec.h:121
avio_feof
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:301
MXFContext::index_tables
MXFIndexTable * index_tables
Definition: mxfdec.c:261
MXFCodecUL::uid
UID uid
Definition: mxf.h:68
MXFPartition::pack_length
int pack_length
Definition: mxfdec.c:91
AVPacket::stream_index
int stream_index
Definition: avcodec.h:1425
AVStream::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:884
MXF_TFF
#define MXF_TFF
Definition: mxfdec.c:175
AVAES
Definition: aes.c:35
MXFTrack::edit_rate
AVRational edit_rate
Definition: mxfdec.c:158
AVStream::discard
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:907
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1400
MXFPartition::index_sid
int index_sid
Definition: mxfdec.c:83
av_mallocz
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
AnyType
Definition: mxf.h:31
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1416
MXFPackage::type
enum MXFMetadataSetType type
Definition: mxfdec.c:209
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
Header
Definition: mxfdec.c:59
MXFTrack::sample_count
uint64_t sample_count
Definition: mxfdec.c:160
MXFContext::current_partition
MXFPartition * current_partition
Definition: mxfdec.c:255
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
MXFTaggedValue::value
char * value
Definition: mxfdec.c:148
MXFPartition::previous_partition
uint64_t previous_partition
Definition: mxfdec.c:82
AV_CODEC_ID_PCM_S32BE
Definition: avcodec.h:340
AV_TIMECODE_STR_SIZE
#define AV_TIMECODE_STR_SIZE
Definition: timecode.h:33
name
const char * name
Definition: opengl_enc.c:103
MXFPartition::header_byte_count
int64_t header_byte_count
Definition: mxfdec.c:89
MXFPackage::descriptor_ref
UID descriptor_ref
Definition: mxfdec.c:215
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