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movenc.c
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1 /*
2  * MOV, 3GP, MP4 muxer
3  * Copyright (c) 2003 Thomas Raivio
4  * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
5  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <stdint.h>
25 #include <inttypes.h>
26 
27 #include "movenc.h"
28 #include "avformat.h"
29 #include "avio_internal.h"
30 #include "riff.h"
31 #include "avio.h"
32 #include "isom.h"
33 #include "avc.h"
34 #include "libavcodec/ac3_parser.h"
35 #include "libavcodec/get_bits.h"
36 #include "libavcodec/put_bits.h"
37 #include "libavcodec/vc1_common.h"
38 #include "libavcodec/raw.h"
39 #include "internal.h"
40 #include "libavutil/avstring.h"
41 #include "libavutil/intfloat.h"
42 #include "libavutil/mathematics.h"
43 #include "libavutil/opt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/timecode.h"
47 #include "hevc.h"
48 #include "rtpenc.h"
49 #include "mov_chan.h"
50 
51 #undef NDEBUG
52 #include <assert.h>
53 
54 static const AVOption options[] = {
55  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
56  { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
57  { "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
58  { "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
59  { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
60  { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
61  { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
62  { "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
63  { "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
64  { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
65  { "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
66  { "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
67  { "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
68  { "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
69  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
70  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
71  { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
72  { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
73  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
74  { "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
75  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
76  { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
77  { "video_track_timescale", "set timescale of all video tracks", offsetof(MOVMuxContext, video_track_timescale), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
78  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
79  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
80  { "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
81  { NULL },
82 };
83 
84 #define MOV_CLASS(flavor)\
85 static const AVClass flavor ## _muxer_class = {\
86  .class_name = #flavor " muxer",\
87  .item_name = av_default_item_name,\
88  .option = options,\
89  .version = LIBAVUTIL_VERSION_INT,\
90 };
91 
92 static int get_moov_size(AVFormatContext *s);
93 
94 static int utf8len(const uint8_t *b)
95 {
96  int len = 0;
97  int val;
98  while (*b) {
99  GET_UTF8(val, *b++, return -1;)
100  len++;
101  }
102  return len;
103 }
104 
105 //FIXME support 64 bit variant with wide placeholders
106 static int64_t update_size(AVIOContext *pb, int64_t pos)
107 {
108  int64_t curpos = avio_tell(pb);
109  avio_seek(pb, pos, SEEK_SET);
110  avio_wb32(pb, curpos - pos); /* rewrite size */
111  avio_seek(pb, curpos, SEEK_SET);
112 
113  return curpos - pos;
114 }
115 
116 static int co64_required(const MOVTrack *track)
117 {
118  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
119  return 1;
120  return 0;
121 }
122 
123 /* Chunk offset atom */
124 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
125 {
126  int i;
127  int mode64 = co64_required(track); // use 32 bit size variant if possible
128  int64_t pos = avio_tell(pb);
129  avio_wb32(pb, 0); /* size */
130  if (mode64)
131  ffio_wfourcc(pb, "co64");
132  else
133  ffio_wfourcc(pb, "stco");
134  avio_wb32(pb, 0); /* version & flags */
135  avio_wb32(pb, track->chunkCount); /* entry count */
136  for (i = 0; i < track->entry; i++) {
137  if (!track->cluster[i].chunkNum)
138  continue;
139  if (mode64 == 1)
140  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
141  else
142  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
143  }
144  return update_size(pb, pos);
145 }
146 
147 /* Sample size atom */
148 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
149 {
150  int equalChunks = 1;
151  int i, j, entries = 0, tst = -1, oldtst = -1;
152 
153  int64_t pos = avio_tell(pb);
154  avio_wb32(pb, 0); /* size */
155  ffio_wfourcc(pb, "stsz");
156  avio_wb32(pb, 0); /* version & flags */
157 
158  for (i = 0; i < track->entry; i++) {
159  tst = track->cluster[i].size / track->cluster[i].entries;
160  if (oldtst != -1 && tst != oldtst)
161  equalChunks = 0;
162  oldtst = tst;
163  entries += track->cluster[i].entries;
164  }
165  if (equalChunks && track->entry) {
166  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
167  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
168  avio_wb32(pb, sSize); // sample size
169  avio_wb32(pb, entries); // sample count
170  } else {
171  avio_wb32(pb, 0); // sample size
172  avio_wb32(pb, entries); // sample count
173  for (i = 0; i < track->entry; i++) {
174  for (j = 0; j < track->cluster[i].entries; j++) {
175  avio_wb32(pb, track->cluster[i].size /
176  track->cluster[i].entries);
177  }
178  }
179  }
180  return update_size(pb, pos);
181 }
182 
183 /* Sample to chunk atom */
184 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
185 {
186  int index = 0, oldval = -1, i;
187  int64_t entryPos, curpos;
188 
189  int64_t pos = avio_tell(pb);
190  avio_wb32(pb, 0); /* size */
191  ffio_wfourcc(pb, "stsc");
192  avio_wb32(pb, 0); // version & flags
193  entryPos = avio_tell(pb);
194  avio_wb32(pb, track->chunkCount); // entry count
195  for (i = 0; i < track->entry; i++) {
196  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
197  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
198  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
199  avio_wb32(pb, 0x1); // sample description index
200  oldval = track->cluster[i].samples_in_chunk;
201  index++;
202  }
203  }
204  curpos = avio_tell(pb);
205  avio_seek(pb, entryPos, SEEK_SET);
206  avio_wb32(pb, index); // rewrite size
207  avio_seek(pb, curpos, SEEK_SET);
208 
209  return update_size(pb, pos);
210 }
211 
212 /* Sync sample atom */
213 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
214 {
215  int64_t curpos, entryPos;
216  int i, index = 0;
217  int64_t pos = avio_tell(pb);
218  avio_wb32(pb, 0); // size
219  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
220  avio_wb32(pb, 0); // version & flags
221  entryPos = avio_tell(pb);
222  avio_wb32(pb, track->entry); // entry count
223  for (i = 0; i < track->entry; i++) {
224  if (track->cluster[i].flags & flag) {
225  avio_wb32(pb, i + 1);
226  index++;
227  }
228  }
229  curpos = avio_tell(pb);
230  avio_seek(pb, entryPos, SEEK_SET);
231  avio_wb32(pb, index); // rewrite size
232  avio_seek(pb, curpos, SEEK_SET);
233  return update_size(pb, pos);
234 }
235 
236 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
237 {
238  avio_wb32(pb, 0x11); /* size */
239  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
240  else ffio_wfourcc(pb, "damr");
241  ffio_wfourcc(pb, "FFMP");
242  avio_w8(pb, 0); /* decoder version */
243 
244  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
245  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
246  avio_w8(pb, 0x01); /* Frames per sample */
247  return 0x11;
248 }
249 
250 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
251 {
252  GetBitContext gbc;
253  PutBitContext pbc;
254  uint8_t buf[3];
255  int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
256 
257  if (track->vos_len < 7)
258  return -1;
259 
260  avio_wb32(pb, 11);
261  ffio_wfourcc(pb, "dac3");
262 
263  init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
264  fscod = get_bits(&gbc, 2);
265  frmsizecod = get_bits(&gbc, 6);
266  bsid = get_bits(&gbc, 5);
267  bsmod = get_bits(&gbc, 3);
268  acmod = get_bits(&gbc, 3);
269  if (acmod == 2) {
270  skip_bits(&gbc, 2); // dsurmod
271  } else {
272  if ((acmod & 1) && acmod != 1)
273  skip_bits(&gbc, 2); // cmixlev
274  if (acmod & 4)
275  skip_bits(&gbc, 2); // surmixlev
276  }
277  lfeon = get_bits1(&gbc);
278 
279  init_put_bits(&pbc, buf, sizeof(buf));
280  put_bits(&pbc, 2, fscod);
281  put_bits(&pbc, 5, bsid);
282  put_bits(&pbc, 3, bsmod);
283  put_bits(&pbc, 3, acmod);
284  put_bits(&pbc, 1, lfeon);
285  put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
286  put_bits(&pbc, 5, 0); // reserved
287 
288  flush_put_bits(&pbc);
289  avio_write(pb, buf, sizeof(buf));
290 
291  return 11;
292 }
293 
294 struct eac3_info {
298 
299  /* Layout of the EC3SpecificBox */
300  /* maximum bitrate */
301  uint16_t data_rate;
302  /* number of independent substreams */
304  struct {
305  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
307  /* bit stream identification 5 bits */
309  /* one bit reserved */
310  /* audio service mixing (not supported yet) 1 bit */
311  /* bit stream mode 3 bits */
313  /* audio coding mode 3 bits */
315  /* sub woofer on 1 bit */
317  /* 3 bits reserved */
318  /* number of dependent substreams associated with this substream 4 bits */
320  /* channel locations of the dependent substream(s), if any, 9 bits */
321  uint16_t chan_loc;
322  /* if there is no dependent substream, then one bit reserved instead */
323  } substream[1]; /* TODO: support 8 independent substreams */
324 };
325 
326 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
327 {
328  GetBitContext gbc;
329  AC3HeaderInfo tmp, *hdr = &tmp;
330  struct eac3_info *info;
331  int num_blocks;
332 
333  if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
334  return AVERROR(ENOMEM);
335  info = track->eac3_priv;
336 
337  init_get_bits(&gbc, pkt->data, pkt->size * 8);
338  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0) {
339  /* drop the packets until we see a good one */
340  if (!track->entry) {
341  av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
342  return 0;
343  }
344  return AVERROR_INVALIDDATA;
345  }
346 
347  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
348  num_blocks = hdr->num_blocks;
349 
350  if (!info->ec3_done) {
351  /* AC-3 substream must be the first one */
352  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)
353  return AVERROR(EINVAL);
354 
355  /* this should always be the case, given that our AC-3 parser
356  * concatenates dependent frames to their independent parent */
358  /* substream ids must be incremental */
359  if (hdr->substreamid > info->num_ind_sub + 1)
360  return AVERROR(EINVAL);
361 
362  if (hdr->substreamid == info->num_ind_sub + 1) {
363  //info->num_ind_sub++;
364  avpriv_request_sample(track->enc, "Multiple independent substreams");
365  return AVERROR_PATCHWELCOME;
366  } else if (hdr->substreamid < info->num_ind_sub ||
367  hdr->substreamid == 0 && info->substream[0].bsid) {
368  info->ec3_done = 1;
369  goto concatenate;
370  }
371  }
372 
373  /* fill the info needed for the "dec3" atom */
374  info->substream[hdr->substreamid].fscod = hdr->sr_code;
375  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
376  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
377  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
378  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
379 
380  /* Parse dependent substream(s), if any */
381  if (pkt->size != hdr->frame_size) {
382  int cumul_size = hdr->frame_size;
383  int parent = hdr->substreamid;
384 
385  while (cumul_size != pkt->size) {
386  int i;
387  init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);
388  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0)
389  return AVERROR_INVALIDDATA;
391  return AVERROR(EINVAL);
392  cumul_size += hdr->frame_size;
393  info->substream[parent].num_dep_sub++;
394 
395  /* header is parsed up to lfeon, but custom channel map may be needed */
396  /* skip bsid */
397  skip_bits(&gbc, 5);
398  /* skip volume control params */
399  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
400  skip_bits(&gbc, 5); // skip dialog normalization
401  if (get_bits1(&gbc)) {
402  skip_bits(&gbc, 8); // skip compression gain word
403  }
404  }
405  /* get the dependent stream channel map, if exists */
406  if (get_bits1(&gbc))
407  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
408  else
409  info->substream[parent].chan_loc |= hdr->channel_mode;
410  }
411  }
412  }
413 
414 concatenate:
415  if (!info->num_blocks && num_blocks == 6)
416  return pkt->size;
417  else if (info->num_blocks + num_blocks > 6)
418  return AVERROR_INVALIDDATA;
419 
420  if (!info->num_blocks) {
421  int ret;
422  if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)
423  return ret;
424  info->num_blocks = num_blocks;
425  return 0;
426  } else {
427  int ret;
428  if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
429  return ret;
430  memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
431  info->num_blocks += num_blocks;
432  info->pkt.duration += pkt->duration;
433  if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
434  return ret;
435  if (info->num_blocks != 6)
436  return 0;
437  av_free_packet(pkt);
438  if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)
439  return ret;
440  av_free_packet(&info->pkt);
441  info->num_blocks = 0;
442  }
443 
444  return pkt->size;
445 }
446 
447 static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)
448 {
449  PutBitContext pbc;
450  uint8_t *buf;
451  struct eac3_info *info;
452  int size, i;
453 
454  if (!track->eac3_priv)
455  return AVERROR(EINVAL);
456 
457  info = track->eac3_priv;
458  size = 2 + 4 * (info->num_ind_sub + 1);
459  buf = av_malloc(size);
460  if (!buf) {
461  size = AVERROR(ENOMEM);
462  goto end;
463  }
464 
465  init_put_bits(&pbc, buf, size);
466  put_bits(&pbc, 13, info->data_rate);
467  put_bits(&pbc, 3, info->num_ind_sub);
468  for (i = 0; i <= info->num_ind_sub; i++) {
469  put_bits(&pbc, 2, info->substream[i].fscod);
470  put_bits(&pbc, 5, info->substream[i].bsid);
471  put_bits(&pbc, 1, 0); /* reserved */
472  put_bits(&pbc, 1, 0); /* asvc */
473  put_bits(&pbc, 3, info->substream[i].bsmod);
474  put_bits(&pbc, 3, info->substream[i].acmod);
475  put_bits(&pbc, 1, info->substream[i].lfeon);
476  put_bits(&pbc, 5, 0); /* reserved */
477  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
478  if (!info->substream[i].num_dep_sub) {
479  put_bits(&pbc, 1, 0); /* reserved */
480  size--;
481  } else {
482  put_bits(&pbc, 9, info->substream[i].chan_loc);
483  }
484  }
485  flush_put_bits(&pbc);
486 
487  avio_wb32(pb, size + 8);
488  ffio_wfourcc(pb, "dec3");
489  avio_write(pb, buf, size);
490 
491  av_free(buf);
492 
493 end:
494  av_free_packet(&info->pkt);
495  av_freep(&track->eac3_priv);
496 
497  return size;
498 }
499 
500 /**
501  * This function writes extradata "as is".
502  * Extradata must be formatted like a valid atom (with size and tag).
503  */
505 {
506  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
507  return track->enc->extradata_size;
508 }
509 
511 {
512  avio_wb32(pb, 10);
513  ffio_wfourcc(pb, "enda");
514  avio_wb16(pb, 1); /* little endian */
515  return 10;
516 }
517 
519 {
520  avio_wb32(pb, 10);
521  ffio_wfourcc(pb, "enda");
522  avio_wb16(pb, 0); /* big endian */
523  return 10;
524 }
525 
526 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
527 {
528  int i = 3;
529  avio_w8(pb, tag);
530  for (; i > 0; i--)
531  avio_w8(pb, (size >> (7 * i)) | 0x80);
532  avio_w8(pb, size & 0x7F);
533 }
534 
535 static unsigned compute_avg_bitrate(MOVTrack *track)
536 {
537  uint64_t size = 0;
538  int i;
539  if (!track->track_duration)
540  return 0;
541  for (i = 0; i < track->entry; i++)
542  size += track->cluster[i].size;
543  return size * 8 * track->timescale / track->track_duration;
544 }
545 
546 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
547 {
548  int64_t pos = avio_tell(pb);
549  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
550  unsigned avg_bitrate;
551 
552  avio_wb32(pb, 0); // size
553  ffio_wfourcc(pb, "esds");
554  avio_wb32(pb, 0); // Version
555 
556  // ES descriptor
557  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
558  avio_wb16(pb, track->track_id);
559  avio_w8(pb, 0x00); // flags (= no flags)
560 
561  // DecoderConfig descriptor
562  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
563 
564  // Object type indication
565  if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
566  track->enc->codec_id == AV_CODEC_ID_MP3) &&
567  track->enc->sample_rate > 24000)
568  avio_w8(pb, 0x6B); // 11172-3
569  else
571 
572  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
573  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
574  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
575  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
576  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
577  avio_w8(pb, 0x15); // flags (= Audiostream)
578  else
579  avio_w8(pb, 0x11); // flags (= Visualstream)
580 
581  avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
582 
583  avg_bitrate = compute_avg_bitrate(track);
584  // maxbitrate (FIXME should be max rate in any 1 sec window)
585  avio_wb32(pb, FFMAX3(track->enc->bit_rate, track->enc->rc_max_rate, avg_bitrate));
586  avio_wb32(pb, avg_bitrate);
587 
588  if (track->vos_len) {
589  // DecoderSpecific info descriptor
590  put_descr(pb, 0x05, track->vos_len);
591  avio_write(pb, track->vos_data, track->vos_len);
592  }
593 
594  // SL descriptor
595  put_descr(pb, 0x06, 1);
596  avio_w8(pb, 0x02);
597  return update_size(pb, pos);
598 }
599 
601 {
602  return codec_id == AV_CODEC_ID_PCM_S24LE ||
603  codec_id == AV_CODEC_ID_PCM_S32LE ||
604  codec_id == AV_CODEC_ID_PCM_F32LE ||
605  codec_id == AV_CODEC_ID_PCM_F64LE;
606 }
607 
609 {
610  return codec_id == AV_CODEC_ID_PCM_S24BE ||
611  codec_id == AV_CODEC_ID_PCM_S32BE ||
612  codec_id == AV_CODEC_ID_PCM_F32BE ||
613  codec_id == AV_CODEC_ID_PCM_F64BE;
614 }
615 
616 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
617 {
618  int ret;
619  int64_t pos = avio_tell(pb);
620  avio_wb32(pb, 0);
621  avio_wl32(pb, track->tag); // store it byteswapped
622  track->enc->codec_tag = av_bswap16(track->tag >> 16);
623  if ((ret = ff_put_wav_header(pb, track->enc, 0)) < 0)
624  return ret;
625  return update_size(pb, pos);
626 }
627 
628 static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
629 {
630  int ret;
631  int64_t pos = avio_tell(pb);
632  avio_wb32(pb, 0);
633  ffio_wfourcc(pb, "wfex");
634  if ((ret = ff_put_wav_header(pb, track->enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
635  return ret;
636  return update_size(pb, pos);
637 }
638 
639 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
640 {
641  uint32_t layout_tag, bitmap;
642  int64_t pos = avio_tell(pb);
643 
644  layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
645  track->enc->channel_layout,
646  &bitmap);
647  if (!layout_tag) {
648  av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
649  "lack of channel information\n");
650  return 0;
651  }
652 
653  if (track->multichannel_as_mono)
654  return 0;
655 
656  avio_wb32(pb, 0); // Size
657  ffio_wfourcc(pb, "chan"); // Type
658  avio_w8(pb, 0); // Version
659  avio_wb24(pb, 0); // Flags
660  avio_wb32(pb, layout_tag); // mChannelLayoutTag
661  avio_wb32(pb, bitmap); // mChannelBitmap
662  avio_wb32(pb, 0); // mNumberChannelDescriptions
663 
664  return update_size(pb, pos);
665 }
666 
667 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
668 {
669  int64_t pos = avio_tell(pb);
670 
671  avio_wb32(pb, 0); /* size */
672  ffio_wfourcc(pb, "wave");
673 
674  if (track->enc->codec_id != AV_CODEC_ID_QDM2) {
675  avio_wb32(pb, 12); /* size */
676  ffio_wfourcc(pb, "frma");
677  avio_wl32(pb, track->tag);
678  }
679 
680  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
681  /* useless atom needed by mplayer, ipod, not needed by quicktime */
682  avio_wb32(pb, 12); /* size */
683  ffio_wfourcc(pb, "mp4a");
684  avio_wb32(pb, 0);
685  mov_write_esds_tag(pb, track);
686  } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
687  mov_write_enda_tag(pb);
688  } else if (mov_pcm_be_gt16(track->enc->codec_id)) {
690  } else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
691  mov_write_amr_tag(pb, track);
692  } else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
693  mov_write_ac3_tag(pb, track);
694  } else if (track->enc->codec_id == AV_CODEC_ID_EAC3) {
695  mov_write_eac3_tag(pb, track);
696  } else if (track->enc->codec_id == AV_CODEC_ID_ALAC ||
697  track->enc->codec_id == AV_CODEC_ID_QDM2) {
698  mov_write_extradata_tag(pb, track);
699  } else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
701  mov_write_ms_tag(pb, track);
702  }
703 
704  avio_wb32(pb, 8); /* size */
705  avio_wb32(pb, 0); /* null tag */
706 
707  return update_size(pb, pos);
708 }
709 
711 {
712  uint8_t *unescaped;
713  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
714  int unescaped_size, seq_found = 0;
715  int level = 0, interlace = 0;
716  int packet_seq = track->vc1_info.packet_seq;
717  int packet_entry = track->vc1_info.packet_entry;
718  int slices = track->vc1_info.slices;
719  PutBitContext pbc;
720 
721  if (track->start_dts == AV_NOPTS_VALUE) {
722  /* No packets written yet, vc1_info isn't authoritative yet. */
723  /* Assume inline sequence and entry headers. This will be
724  * overwritten at the end if the file is seekable. */
725  packet_seq = packet_entry = 1;
726  }
727 
728  unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
729  if (!unescaped)
730  return AVERROR(ENOMEM);
731  start = find_next_marker(track->vos_data, end);
732  for (next = start; next < end; start = next) {
733  GetBitContext gb;
734  int size;
735  next = find_next_marker(start + 4, end);
736  size = next - start - 4;
737  if (size <= 0)
738  continue;
739  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
740  init_get_bits(&gb, unescaped, 8 * unescaped_size);
741  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
742  int profile = get_bits(&gb, 2);
743  if (profile != PROFILE_ADVANCED) {
744  av_free(unescaped);
745  return AVERROR(ENOSYS);
746  }
747  seq_found = 1;
748  level = get_bits(&gb, 3);
749  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
750  * width, height */
751  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
752  skip_bits(&gb, 1); /* broadcast */
753  interlace = get_bits1(&gb);
754  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
755  }
756  }
757  if (!seq_found) {
758  av_free(unescaped);
759  return AVERROR(ENOSYS);
760  }
761 
762  init_put_bits(&pbc, buf, 7);
763  /* VC1DecSpecStruc */
764  put_bits(&pbc, 4, 12); /* profile - advanced */
765  put_bits(&pbc, 3, level);
766  put_bits(&pbc, 1, 0); /* reserved */
767  /* VC1AdvDecSpecStruc */
768  put_bits(&pbc, 3, level);
769  put_bits(&pbc, 1, 0); /* cbr */
770  put_bits(&pbc, 6, 0); /* reserved */
771  put_bits(&pbc, 1, !interlace); /* no interlace */
772  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
773  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
774  put_bits(&pbc, 1, !slices); /* no slice code */
775  put_bits(&pbc, 1, 0); /* no bframe */
776  put_bits(&pbc, 1, 0); /* reserved */
777 
778  /* framerate */
779  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
780  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
781  else
782  put_bits32(&pbc, 0xffffffff);
783 
784  flush_put_bits(&pbc);
785 
786  av_free(unescaped);
787 
788  return 0;
789 }
790 
791 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
792 {
793  uint8_t buf[7] = { 0 };
794  int ret;
795 
796  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
797  return ret;
798 
799  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
800  ffio_wfourcc(pb, "dvc1");
801  track->vc1_info.struct_offset = avio_tell(pb);
802  avio_write(pb, buf, sizeof(buf));
803  avio_write(pb, track->vos_data, track->vos_len);
804 
805  return 0;
806 }
807 
808 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
809 {
810  avio_wb32(pb, track->vos_len + 8);
811  ffio_wfourcc(pb, "glbl");
812  avio_write(pb, track->vos_data, track->vos_len);
813  return 8 + track->vos_len;
814 }
815 
816 /**
817  * Compute flags for 'lpcm' tag.
818  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
819  */
821 {
822  switch (codec_id) {
825  return 11;
828  return 9;
829  case AV_CODEC_ID_PCM_U8:
830  return 10;
834  return 14;
835  case AV_CODEC_ID_PCM_S8:
839  return 12;
840  default:
841  return 0;
842  }
843 }
844 
845 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
846 {
847  int64_t next_dts;
848 
849  if (cluster_idx >= track->entry)
850  return 0;
851 
852  if (cluster_idx + 1 == track->entry)
853  next_dts = track->track_duration + track->start_dts;
854  else
855  next_dts = track->cluster[cluster_idx + 1].dts;
856 
857  next_dts -= track->cluster[cluster_idx].dts;
858 
859  av_assert0(next_dts >= 0);
860  av_assert0(next_dts <= INT_MAX);
861 
862  return next_dts;
863 }
864 
866 {
867  int i, first_duration;
868 
869 // return track->enc->frame_size;
870 
871  /* use 1 for raw PCM */
872  if (!track->audio_vbr)
873  return 1;
874 
875  /* check to see if duration is constant for all clusters */
876  if (!track->entry)
877  return 0;
878  first_duration = get_cluster_duration(track, 0);
879  for (i = 1; i < track->entry; i++) {
880  if (get_cluster_duration(track, i) != first_duration)
881  return 0;
882  }
883  return first_duration;
884 }
885 
886 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
887 {
888  int64_t pos = avio_tell(pb);
889  int version = 0;
890  uint32_t tag = track->tag;
891 
892  if (track->mode == MODE_MOV) {
893  if (track->timescale > UINT16_MAX) {
894  if (mov_get_lpcm_flags(track->enc->codec_id))
895  tag = AV_RL32("lpcm");
896  version = 2;
897  } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
898  mov_pcm_be_gt16(track->enc->codec_id) ||
899  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
901  track->enc->codec_id == AV_CODEC_ID_QDM2) {
902  version = 1;
903  }
904  }
905 
906  avio_wb32(pb, 0); /* size */
907  avio_wl32(pb, tag); // store it byteswapped
908  avio_wb32(pb, 0); /* Reserved */
909  avio_wb16(pb, 0); /* Reserved */
910  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
911 
912  /* SoundDescription */
913  avio_wb16(pb, version); /* Version */
914  avio_wb16(pb, 0); /* Revision level */
915  avio_wb32(pb, 0); /* Reserved */
916 
917  if (version == 2) {
918  avio_wb16(pb, 3);
919  avio_wb16(pb, 16);
920  avio_wb16(pb, 0xfffe);
921  avio_wb16(pb, 0);
922  avio_wb32(pb, 0x00010000);
923  avio_wb32(pb, 72);
924  avio_wb64(pb, av_double2int(track->enc->sample_rate));
925  avio_wb32(pb, track->enc->channels);
926  avio_wb32(pb, 0x7F000000);
929  avio_wb32(pb, track->sample_size);
930  avio_wb32(pb, get_samples_per_packet(track));
931  } else {
932  if (track->mode == MODE_MOV) {
933  avio_wb16(pb, track->enc->channels);
934  if (track->enc->codec_id == AV_CODEC_ID_PCM_U8 ||
935  track->enc->codec_id == AV_CODEC_ID_PCM_S8)
936  avio_wb16(pb, 8); /* bits per sample */
937  else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_G726)
938  avio_wb16(pb, track->enc->bits_per_coded_sample);
939  else
940  avio_wb16(pb, 16);
941  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
942  } else { /* reserved for mp4/3gp */
943  avio_wb16(pb, 2);
944  avio_wb16(pb, 16);
945  avio_wb16(pb, 0);
946  }
947 
948  avio_wb16(pb, 0); /* packet size (= 0) */
949  avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
950  track->enc->sample_rate : 0);
951  avio_wb16(pb, 0); /* Reserved */
952  }
953 
954  if (version == 1) { /* SoundDescription V1 extended info */
955  if (mov_pcm_le_gt16(track->enc->codec_id) ||
956  mov_pcm_be_gt16(track->enc->codec_id))
957  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
958  else
959  avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
960  avio_wb32(pb, track->sample_size / track->enc->channels); /* Bytes per packet */
961  avio_wb32(pb, track->sample_size); /* Bytes per frame */
962  avio_wb32(pb, 2); /* Bytes per sample */
963  }
964 
965  if (track->mode == MODE_MOV &&
966  (track->enc->codec_id == AV_CODEC_ID_AAC ||
967  track->enc->codec_id == AV_CODEC_ID_AC3 ||
968  track->enc->codec_id == AV_CODEC_ID_EAC3 ||
969  track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
970  track->enc->codec_id == AV_CODEC_ID_ALAC ||
971  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
973  track->enc->codec_id == AV_CODEC_ID_QDM2 ||
974  (mov_pcm_le_gt16(track->enc->codec_id) && version==1) ||
975  (mov_pcm_be_gt16(track->enc->codec_id) && version==1)))
976  mov_write_wave_tag(pb, track);
977  else if (track->tag == MKTAG('m','p','4','a'))
978  mov_write_esds_tag(pb, track);
979  else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
980  mov_write_amr_tag(pb, track);
981  else if (track->enc->codec_id == AV_CODEC_ID_AC3)
982  mov_write_ac3_tag(pb, track);
983  else if (track->enc->codec_id == AV_CODEC_ID_EAC3)
984  mov_write_eac3_tag(pb, track);
985  else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
986  mov_write_extradata_tag(pb, track);
987  else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
988  mov_write_wfex_tag(pb, track);
989  else if (track->vos_len > 0)
990  mov_write_glbl_tag(pb, track);
991 
992  if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
993  mov_write_chan_tag(pb, track);
994 
995  return update_size(pb, pos);
996 }
997 
999 {
1000  avio_wb32(pb, 0xf); /* size */
1001  ffio_wfourcc(pb, "d263");
1002  ffio_wfourcc(pb, "FFMP");
1003  avio_w8(pb, 0); /* decoder version */
1004  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1005  avio_w8(pb, 0xa); /* level */
1006  avio_w8(pb, 0); /* profile */
1007  return 0xf;
1008 }
1009 
1010 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1011 {
1012  int64_t pos = avio_tell(pb);
1013 
1014  avio_wb32(pb, 0);
1015  ffio_wfourcc(pb, "avcC");
1016  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1017  return update_size(pb, pos);
1018 }
1019 
1020 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1021 {
1022  int64_t pos = avio_tell(pb);
1023 
1024  avio_wb32(pb, 0);
1025  ffio_wfourcc(pb, "hvcC");
1026  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1027  return update_size(pb, pos);
1028 }
1029 
1030 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1031 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1032 {
1033  int i;
1034  avio_wb32(pb, 24); /* size */
1035  ffio_wfourcc(pb, "ACLR");
1036  ffio_wfourcc(pb, "ACLR");
1037  ffio_wfourcc(pb, "0001");
1038  if (track->enc->color_range == AVCOL_RANGE_MPEG) { /* Legal range (16-235) */
1039  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1040  } else { /* Full range (0-255) */
1041  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1042  }
1043  avio_wb32(pb, 0); /* unknown */
1044 
1045  avio_wb32(pb, 24); /* size */
1046  ffio_wfourcc(pb, "APRG");
1047  ffio_wfourcc(pb, "APRG");
1048  ffio_wfourcc(pb, "0001");
1049  avio_wb32(pb, 1); /* unknown */
1050  avio_wb32(pb, 0); /* unknown */
1051 
1052  avio_wb32(pb, 120); /* size */
1053  ffio_wfourcc(pb, "ARES");
1054  ffio_wfourcc(pb, "ARES");
1055  ffio_wfourcc(pb, "0001");
1056  avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
1057  avio_wb32(pb, track->enc->width);
1058  /* values below are based on samples created with quicktime and avid codecs */
1059  if (track->vos_data[5] & 2) { // interlaced
1060  avio_wb32(pb, track->enc->height / 2);
1061  avio_wb32(pb, 2); /* unknown */
1062  avio_wb32(pb, 0); /* unknown */
1063  avio_wb32(pb, 4); /* unknown */
1064  } else {
1065  avio_wb32(pb, track->enc->height);
1066  avio_wb32(pb, 1); /* unknown */
1067  avio_wb32(pb, 0); /* unknown */
1068  if (track->enc->height == 1080)
1069  avio_wb32(pb, 5); /* unknown */
1070  else
1071  avio_wb32(pb, 6); /* unknown */
1072  }
1073  /* padding */
1074  for (i = 0; i < 10; i++)
1075  avio_wb64(pb, 0);
1076 
1077  /* extra padding for stsd needed */
1078  avio_wb32(pb, 0);
1079  return 0;
1080 }
1081 
1083 {
1084  int tag = track->enc->codec_tag;
1085 
1087  return 0;
1088 
1089  if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
1090  else if (track->enc->codec_id == AV_CODEC_ID_HEVC) tag = MKTAG('h','e','v','1');
1091  else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
1092  else if (track->enc->codec_id == AV_CODEC_ID_EAC3) tag = MKTAG('e','c','-','3');
1093  else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
1094  else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
1095  else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
1096  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
1097  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
1098  else if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE) tag = MKTAG('m','p','4','s');
1099 
1100  return tag;
1101 }
1102 
1103 static const AVCodecTag codec_ipod_tags[] = {
1104  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1105  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1106  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1107  { AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
1108  { AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
1109  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1110  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
1111  { AV_CODEC_ID_NONE, 0 },
1112 };
1113 
1115 {
1116  int tag = track->enc->codec_tag;
1117 
1118  // keep original tag for subs, ipod supports both formats
1119  if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1120  (tag == MKTAG('t', 'x', '3', 'g') ||
1121  tag == MKTAG('t', 'e', 'x', 't'))))
1122  tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
1123 
1124  if (!av_match_ext(s->filename, "m4a") &&
1125  !av_match_ext(s->filename, "m4b") &&
1126  !av_match_ext(s->filename, "m4v"))
1127  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a, .m4v nor .m4b "
1128  "Quicktime/Ipod might not play the file\n");
1129 
1130  return tag;
1131 }
1132 
1134 {
1135  int tag;
1136 
1137  if (track->enc->width == 720) { /* SD */
1138  if (track->enc->height == 480) { /* NTSC */
1139  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1140  else tag = MKTAG('d','v','c',' ');
1141  }else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1142  else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1143  else tag = MKTAG('d','v','p','p');
1144  } else if (track->enc->height == 720) { /* HD 720 line */
1145  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1146  else tag = MKTAG('d','v','h','p');
1147  } else if (track->enc->height == 1080) { /* HD 1080 line */
1148  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1149  else tag = MKTAG('d','v','h','6');
1150  } else {
1151  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1152  return 0;
1153  }
1154 
1155  return tag;
1156 }
1157 
1159 {
1160  AVRational rate = {st->codec->time_base.den, st->codec->time_base.num};
1161  /* if the codec time base makes no sense, try to fallback on stream frame rate */
1162  if (av_timecode_check_frame_rate(rate) < 0) {
1163  av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
1164  rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
1165  rate = st->avg_frame_rate;
1166  }
1167 
1168  return rate;
1169 }
1170 
1172 {
1173  int tag = track->enc->codec_tag;
1175  AVStream *st = track->st;
1176  int rate = av_q2d(find_fps(s, st));
1177 
1178  if (!tag)
1179  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1180 
1181  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) {
1182  if (track->enc->width == 1280 && track->enc->height == 720) {
1183  if (!interlaced) {
1184  if (rate == 24) tag = MKTAG('x','d','v','4');
1185  else if (rate == 25) tag = MKTAG('x','d','v','5');
1186  else if (rate == 30) tag = MKTAG('x','d','v','1');
1187  else if (rate == 50) tag = MKTAG('x','d','v','a');
1188  else if (rate == 60) tag = MKTAG('x','d','v','9');
1189  }
1190  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1191  if (!interlaced) {
1192  if (rate == 24) tag = MKTAG('x','d','v','6');
1193  else if (rate == 25) tag = MKTAG('x','d','v','7');
1194  else if (rate == 30) tag = MKTAG('x','d','v','8');
1195  } else {
1196  if (rate == 25) tag = MKTAG('x','d','v','3');
1197  else if (rate == 30) tag = MKTAG('x','d','v','2');
1198  }
1199  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1200  if (!interlaced) {
1201  if (rate == 24) tag = MKTAG('x','d','v','d');
1202  else if (rate == 25) tag = MKTAG('x','d','v','e');
1203  else if (rate == 30) tag = MKTAG('x','d','v','f');
1204  } else {
1205  if (rate == 25) tag = MKTAG('x','d','v','c');
1206  else if (rate == 30) tag = MKTAG('x','d','v','b');
1207  }
1208  }
1209  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1210  if (track->enc->width == 1280 && track->enc->height == 720) {
1211  if (!interlaced) {
1212  if (rate == 24) tag = MKTAG('x','d','5','4');
1213  else if (rate == 25) tag = MKTAG('x','d','5','5');
1214  else if (rate == 30) tag = MKTAG('x','d','5','1');
1215  else if (rate == 50) tag = MKTAG('x','d','5','a');
1216  else if (rate == 60) tag = MKTAG('x','d','5','9');
1217  }
1218  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1219  if (!interlaced) {
1220  if (rate == 24) tag = MKTAG('x','d','5','d');
1221  else if (rate == 25) tag = MKTAG('x','d','5','e');
1222  else if (rate == 30) tag = MKTAG('x','d','5','f');
1223  } else {
1224  if (rate == 25) tag = MKTAG('x','d','5','c');
1225  else if (rate == 30) tag = MKTAG('x','d','5','b');
1226  }
1227  }
1228  }
1229 
1230  return tag;
1231 }
1232 
1234 {
1235  int tag = track->enc->codec_tag;
1237  AVStream *st = track->st;
1238  int rate = av_q2d(find_fps(s, st));
1239 
1240  if (!tag)
1241  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1242 
1243  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P10) {
1244  if (track->enc->width == 960 && track->enc->height == 720) {
1245  if (!interlaced) {
1246  if (rate == 24) tag = MKTAG('a','i','5','p');
1247  else if (rate == 25) tag = MKTAG('a','i','5','q');
1248  else if (rate == 30) tag = MKTAG('a','i','5','p');
1249  else if (rate == 50) tag = MKTAG('a','i','5','q');
1250  else if (rate == 60) tag = MKTAG('a','i','5','p');
1251  }
1252  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1253  if (!interlaced) {
1254  if (rate == 24) tag = MKTAG('a','i','5','3');
1255  else if (rate == 25) tag = MKTAG('a','i','5','2');
1256  else if (rate == 30) tag = MKTAG('a','i','5','3');
1257  } else {
1258  if (rate == 50) tag = MKTAG('a','i','5','5');
1259  else if (rate == 60) tag = MKTAG('a','i','5','6');
1260  }
1261  }
1262  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P10) {
1263  if (track->enc->width == 1280 && track->enc->height == 720) {
1264  if (!interlaced) {
1265  if (rate == 24) tag = MKTAG('a','i','1','p');
1266  else if (rate == 25) tag = MKTAG('a','i','1','q');
1267  else if (rate == 30) tag = MKTAG('a','i','1','p');
1268  else if (rate == 50) tag = MKTAG('a','i','1','q');
1269  else if (rate == 60) tag = MKTAG('a','i','1','p');
1270  }
1271  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1272  if (!interlaced) {
1273  if (rate == 24) tag = MKTAG('a','i','1','3');
1274  else if (rate == 25) tag = MKTAG('a','i','1','2');
1275  else if (rate == 30) tag = MKTAG('a','i','1','3');
1276  } else {
1277  if (rate == 25) tag = MKTAG('a','i','1','5');
1278  else if (rate == 50) tag = MKTAG('a','i','1','5');
1279  else if (rate == 60) tag = MKTAG('a','i','1','6');
1280  }
1281  }
1282  }
1283 
1284  return tag;
1285 }
1286 
1287 static const struct {
1289  uint32_t tag;
1290  unsigned bps;
1291 } mov_pix_fmt_tags[] = {
1292  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1293  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1294  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1295  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1296  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1297  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1298  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1299  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1300  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1301  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1302  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1303  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1304  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1305  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1306  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1307 };
1308 
1310 {
1311  int tag = track->enc->codec_tag;
1312  int i;
1313  enum AVPixelFormat pix_fmt;
1314 
1315  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1316  if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
1317  tag = mov_pix_fmt_tags[i].tag;
1318  track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1319  if (track->enc->codec_tag == mov_pix_fmt_tags[i].tag)
1320  break;
1321  }
1322  }
1323 
1325  track->enc->bits_per_coded_sample);
1326  if (tag == MKTAG('r','a','w',' ') &&
1327  track->enc->pix_fmt != pix_fmt &&
1328  track->enc->pix_fmt != AV_PIX_FMT_NONE)
1329  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1330  av_get_pix_fmt_name(track->enc->pix_fmt));
1331  return tag;
1332 }
1333 
1335 {
1336  int tag = track->enc->codec_tag;
1337 
1338  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1339  (track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
1340  track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
1341  track->enc->codec_id == AV_CODEC_ID_H263 ||
1342  track->enc->codec_id == AV_CODEC_ID_H264 ||
1343  track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1344  av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
1345  if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
1346  tag = mov_get_dv_codec_tag(s, track);
1347  else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
1348  tag = mov_get_rawvideo_codec_tag(s, track);
1349  else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1350  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1351  else if (track->enc->codec_id == AV_CODEC_ID_H264)
1352  tag = mov_get_h264_codec_tag(s, track);
1353  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1355  if (!tag) { // if no mac fcc found, try with Microsoft tags
1357  if (tag)
1358  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1359  "the file may be unplayable!\n");
1360  }
1361  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1363  if (!tag) { // if no mac fcc found, try with Microsoft tags
1364  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
1365  if (ms_tag) {
1366  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1367  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1368  "the file may be unplayable!\n");
1369  }
1370  }
1371  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1373  }
1374 
1375  return tag;
1376 }
1377 
1378 static const AVCodecTag codec_3gp_tags[] = {
1379  { AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
1380  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1381  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1382  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1383  { AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
1384  { AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
1385  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1386  { AV_CODEC_ID_NONE, 0 },
1387 };
1388 
1389 static const AVCodecTag codec_f4v_tags[] = { // XXX: add GIF/PNG/JPEG?
1390  { AV_CODEC_ID_MP3, MKTAG('.','m','p','3') },
1391  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1392  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1393  { AV_CODEC_ID_VP6A, MKTAG('V','P','6','A') },
1394  { AV_CODEC_ID_VP6F, MKTAG('V','P','6','F') },
1395  { AV_CODEC_ID_NONE, 0 },
1396 };
1397 
1399 {
1400  int tag;
1401 
1402  if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
1403  tag = mp4_get_codec_tag(s, track);
1404  else if (track->mode == MODE_ISM) {
1405  tag = mp4_get_codec_tag(s, track);
1406  if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
1407  tag = MKTAG('w', 'm', 'a', ' ');
1408  } else if (track->mode == MODE_IPOD)
1409  tag = ipod_get_codec_tag(s, track);
1410  else if (track->mode & MODE_3GP)
1411  tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
1412  else if (track->mode == MODE_F4V)
1413  tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
1414  else
1415  tag = mov_get_codec_tag(s, track);
1416 
1417  return tag;
1418 }
1419 
1420 /** Write uuid atom.
1421  * Needed to make file play in iPods running newest firmware
1422  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1423  */
1425 {
1426  avio_wb32(pb, 28);
1427  ffio_wfourcc(pb, "uuid");
1428  avio_wb32(pb, 0x6b6840f2);
1429  avio_wb32(pb, 0x5f244fc5);
1430  avio_wb32(pb, 0xba39a51b);
1431  avio_wb32(pb, 0xcf0323f3);
1432  avio_wb32(pb, 0x0);
1433  return 28;
1434 }
1435 
1436 static const uint16_t fiel_data[] = {
1437  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1438 };
1439 
1440 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
1441 {
1442  unsigned mov_field_order = 0;
1443  if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
1444  mov_field_order = fiel_data[track->enc->field_order];
1445  else
1446  return 0;
1447  avio_wb32(pb, 10);
1448  ffio_wfourcc(pb, "fiel");
1449  avio_wb16(pb, mov_field_order);
1450  return 10;
1451 }
1452 
1454 {
1455  int64_t pos = avio_tell(pb);
1456  avio_wb32(pb, 0); /* size */
1457  avio_wl32(pb, track->tag); // store it byteswapped
1458  avio_wb32(pb, 0); /* Reserved */
1459  avio_wb16(pb, 0); /* Reserved */
1460  avio_wb16(pb, 1); /* Data-reference index */
1461 
1462  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1463  mov_write_esds_tag(pb, track);
1464  else if (track->enc->extradata_size)
1465  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1466 
1467  return update_size(pb, pos);
1468 }
1469 
1470 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1471 {
1472  AVRational sar;
1473  av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
1474  track->enc->sample_aspect_ratio.den, INT_MAX);
1475 
1476  avio_wb32(pb, 16);
1477  ffio_wfourcc(pb, "pasp");
1478  avio_wb32(pb, sar.num);
1479  avio_wb32(pb, sar.den);
1480  return 16;
1481 }
1482 
1483 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
1484 {
1485  AVDictionaryEntry *encoder;
1486  int xdcam_res = (track->enc->width == 1280 && track->enc->height == 720)
1487  || (track->enc->width == 1440 && track->enc->height == 1080)
1488  || (track->enc->width == 1920 && track->enc->height == 1080);
1489 
1490  if (track->mode == MODE_MOV &&
1491  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
1492  av_strlcpy(compressor_name, encoder->value, 32);
1493  } else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
1495  AVStream *st = track->st;
1496  int rate = av_q2d(find_fps(NULL, st));
1497  av_strlcatf(compressor_name, len, "XDCAM");
1498  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1499  av_strlcatf(compressor_name, len, " HD422");
1500  } else if(track->enc->width == 1440) {
1501  av_strlcatf(compressor_name, len, " HD");
1502  } else
1503  av_strlcatf(compressor_name, len, " EX");
1504 
1505  av_strlcatf(compressor_name, len, " %d%c", track->enc->height, interlaced ? 'i' : 'p');
1506 
1507  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
1508  }
1509 }
1510 
1512 {
1513  int64_t pos = avio_tell(pb);
1514  char compressor_name[32] = { 0 };
1515 
1516  avio_wb32(pb, 0); /* size */
1517  avio_wl32(pb, track->tag); // store it byteswapped
1518  avio_wb32(pb, 0); /* Reserved */
1519  avio_wb16(pb, 0); /* Reserved */
1520  avio_wb16(pb, 1); /* Data-reference index */
1521 
1522  avio_wb16(pb, 0); /* Codec stream version */
1523  avio_wb16(pb, 0); /* Codec stream revision (=0) */
1524  if (track->mode == MODE_MOV) {
1525  ffio_wfourcc(pb, "FFMP"); /* Vendor */
1526  if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
1527  avio_wb32(pb, 0); /* Temporal Quality */
1528  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
1529  } else {
1530  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
1531  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
1532  }
1533  } else {
1534  avio_wb32(pb, 0); /* Reserved */
1535  avio_wb32(pb, 0); /* Reserved */
1536  avio_wb32(pb, 0); /* Reserved */
1537  }
1538  avio_wb16(pb, track->enc->width); /* Video width */
1539  avio_wb16(pb, track->height); /* Video height */
1540  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
1541  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
1542  avio_wb32(pb, 0); /* Data size (= 0) */
1543  avio_wb16(pb, 1); /* Frame count (= 1) */
1544 
1545  /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
1546  find_compressor(compressor_name, 32, track);
1547  avio_w8(pb, strlen(compressor_name));
1548  avio_write(pb, compressor_name, 31);
1549 
1550  if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
1551  avio_wb16(pb, track->enc->bits_per_coded_sample);
1552  else
1553  avio_wb16(pb, 0x18); /* Reserved */
1554  avio_wb16(pb, 0xffff); /* Reserved */
1555  if (track->tag == MKTAG('m','p','4','v'))
1556  mov_write_esds_tag(pb, track);
1557  else if (track->enc->codec_id == AV_CODEC_ID_H263)
1558  mov_write_d263_tag(pb);
1559  else if (track->enc->codec_id == AV_CODEC_ID_AVUI ||
1560  track->enc->codec_id == AV_CODEC_ID_SVQ3) {
1561  mov_write_extradata_tag(pb, track);
1562  avio_wb32(pb, 0);
1563  } else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
1564  mov_write_avid_tag(pb, track);
1565  else if (track->enc->codec_id == AV_CODEC_ID_HEVC)
1566  mov_write_hvcc_tag(pb, track);
1567  else if (track->enc->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
1568  mov_write_avcc_tag(pb, track);
1569  if (track->mode == MODE_IPOD)
1571  } else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
1572  mov_write_dvc1_tag(pb, track);
1573  else if (track->enc->codec_id == AV_CODEC_ID_VP6F ||
1574  track->enc->codec_id == AV_CODEC_ID_VP6A) {
1575  /* Don't write any potential extradata here - the cropping
1576  * is signalled via the normal width/height fields. */
1577  } else if (track->vos_len > 0)
1578  mov_write_glbl_tag(pb, track);
1579 
1580  if (track->enc->codec_id != AV_CODEC_ID_H264 &&
1581  track->enc->codec_id != AV_CODEC_ID_MPEG4 &&
1582  track->enc->codec_id != AV_CODEC_ID_DNXHD)
1583  if (track->enc->field_order != AV_FIELD_UNKNOWN)
1584  mov_write_fiel_tag(pb, track);
1585 
1586  if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
1587  track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
1588  mov_write_pasp_tag(pb, track);
1589  }
1590 
1591  return update_size(pb, pos);
1592 }
1593 
1594 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
1595 {
1596  int64_t pos = avio_tell(pb);
1597  avio_wb32(pb, 0); /* size */
1598  ffio_wfourcc(pb, "rtp ");
1599  avio_wb32(pb, 0); /* Reserved */
1600  avio_wb16(pb, 0); /* Reserved */
1601  avio_wb16(pb, 1); /* Data-reference index */
1602 
1603  avio_wb16(pb, 1); /* Hint track version */
1604  avio_wb16(pb, 1); /* Highest compatible version */
1605  avio_wb32(pb, track->max_packet_size); /* Max packet size */
1606 
1607  avio_wb32(pb, 12); /* size */
1608  ffio_wfourcc(pb, "tims");
1609  avio_wb32(pb, track->timescale);
1610 
1611  return update_size(pb, pos);
1612 }
1613 
1614 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
1615 {
1616  uint64_t str_size =strlen(reel_name);
1617  int64_t pos = avio_tell(pb);
1618 
1619  if (str_size >= UINT16_MAX){
1620  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
1621  avio_wb16(pb, 0);
1622  return AVERROR(EINVAL);
1623  }
1624 
1625  avio_wb32(pb, 0); /* size */
1626  ffio_wfourcc(pb, "name"); /* Data format */
1627  avio_wb16(pb, str_size); /* string size */
1628  avio_wb16(pb, track->language); /* langcode */
1629  avio_write(pb, reel_name, str_size); /* reel name */
1630  return update_size(pb,pos);
1631 }
1632 
1633 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
1634 {
1635  int64_t pos = avio_tell(pb);
1636 #if 1
1637  int frame_duration = av_rescale(track->timescale, track->enc->time_base.num, track->enc->time_base.den);
1638  int nb_frames = 1.0/av_q2d(track->enc->time_base) + 0.5;
1639  AVDictionaryEntry *t = NULL;
1640 
1641  if (nb_frames > 255) {
1642  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
1643  return AVERROR(EINVAL);
1644  }
1645 
1646  avio_wb32(pb, 0); /* size */
1647  ffio_wfourcc(pb, "tmcd"); /* Data format */
1648  avio_wb32(pb, 0); /* Reserved */
1649  avio_wb32(pb, 1); /* Data reference index */
1650  avio_wb32(pb, 0); /* Flags */
1651  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
1652  avio_wb32(pb, track->timescale); /* Timescale */
1653  avio_wb32(pb, frame_duration); /* Frame duration */
1654  avio_w8(pb, nb_frames); /* Number of frames */
1655  avio_w8(pb, 0); /* Reserved */
1656 
1657  if (track->st)
1658  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
1659 
1660  if (t && utf8len(t->value))
1661  mov_write_source_reference_tag(pb, track, t->value);
1662  else
1663  avio_wb16(pb, 0); /* zero size */
1664 #else
1665 
1666  avio_wb32(pb, 0); /* size */
1667  ffio_wfourcc(pb, "tmcd"); /* Data format */
1668  avio_wb32(pb, 0); /* Reserved */
1669  avio_wb32(pb, 1); /* Data reference index */
1670  if (track->enc->extradata_size)
1671  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1672 #endif
1673  return update_size(pb, pos);
1674 }
1675 
1676 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
1677 {
1678  int64_t pos = avio_tell(pb);
1679  avio_wb32(pb, 0); /* size */
1680  ffio_wfourcc(pb, "stsd");
1681  avio_wb32(pb, 0); /* version & flags */
1682  avio_wb32(pb, 1); /* entry count */
1683  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1684  mov_write_video_tag(pb, track);
1685  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1686  mov_write_audio_tag(pb, track);
1687  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1688  mov_write_subtitle_tag(pb, track);
1689  else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
1690  mov_write_rtp_tag(pb, track);
1691  else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
1692  mov_write_tmcd_tag(pb, track);
1693  return update_size(pb, pos);
1694 }
1695 
1696 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
1697 {
1698  MOVStts *ctts_entries;
1699  uint32_t entries = 0;
1700  uint32_t atom_size;
1701  int i;
1702 
1703  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
1704  ctts_entries[0].count = 1;
1705  ctts_entries[0].duration = track->cluster[0].cts;
1706  for (i = 1; i < track->entry; i++) {
1707  if (track->cluster[i].cts == ctts_entries[entries].duration) {
1708  ctts_entries[entries].count++; /* compress */
1709  } else {
1710  entries++;
1711  ctts_entries[entries].duration = track->cluster[i].cts;
1712  ctts_entries[entries].count = 1;
1713  }
1714  }
1715  entries++; /* last one */
1716  atom_size = 16 + (entries * 8);
1717  avio_wb32(pb, atom_size); /* size */
1718  ffio_wfourcc(pb, "ctts");
1719  avio_wb32(pb, 0); /* version & flags */
1720  avio_wb32(pb, entries); /* entry count */
1721  for (i = 0; i < entries; i++) {
1722  avio_wb32(pb, ctts_entries[i].count);
1723  avio_wb32(pb, ctts_entries[i].duration);
1724  }
1725  av_free(ctts_entries);
1726  return atom_size;
1727 }
1728 
1729 /* Time to sample atom */
1730 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
1731 {
1732  MOVStts *stts_entries;
1733  uint32_t entries = -1;
1734  uint32_t atom_size;
1735  int i;
1736 
1737  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
1738  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
1739  stts_entries[0].count = track->sample_count;
1740  stts_entries[0].duration = 1;
1741  entries = 1;
1742  } else {
1743  stts_entries = track->entry ?
1744  av_malloc_array(track->entry, sizeof(*stts_entries)) : /* worst case */
1745  NULL;
1746  for (i = 0; i < track->entry; i++) {
1747  int duration = get_cluster_duration(track, i);
1748  if (i && duration == stts_entries[entries].duration) {
1749  stts_entries[entries].count++; /* compress */
1750  } else {
1751  entries++;
1752  stts_entries[entries].duration = duration;
1753  stts_entries[entries].count = 1;
1754  }
1755  }
1756  entries++; /* last one */
1757  }
1758  atom_size = 16 + (entries * 8);
1759  avio_wb32(pb, atom_size); /* size */
1760  ffio_wfourcc(pb, "stts");
1761  avio_wb32(pb, 0); /* version & flags */
1762  avio_wb32(pb, entries); /* entry count */
1763  for (i = 0; i < entries; i++) {
1764  avio_wb32(pb, stts_entries[i].count);
1765  avio_wb32(pb, stts_entries[i].duration);
1766  }
1767  av_free(stts_entries);
1768  return atom_size;
1769 }
1770 
1772 {
1773  avio_wb32(pb, 28); /* size */
1774  ffio_wfourcc(pb, "dref");
1775  avio_wb32(pb, 0); /* version & flags */
1776  avio_wb32(pb, 1); /* entry count */
1777 
1778  avio_wb32(pb, 0xc); /* size */
1779  //FIXME add the alis and rsrc atom
1780  ffio_wfourcc(pb, "url ");
1781  avio_wb32(pb, 1); /* version & flags */
1782 
1783  return 28;
1784 }
1785 
1786 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
1787 {
1788  int64_t pos = avio_tell(pb);
1789  avio_wb32(pb, 0); /* size */
1790  ffio_wfourcc(pb, "stbl");
1791  mov_write_stsd_tag(pb, track);
1792  mov_write_stts_tag(pb, track);
1793  if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1794  track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
1795  track->has_keyframes && track->has_keyframes < track->entry)
1796  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
1797  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
1799  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
1800  track->flags & MOV_TRACK_CTTS)
1801  mov_write_ctts_tag(pb, track);
1802  mov_write_stsc_tag(pb, track);
1803  mov_write_stsz_tag(pb, track);
1804  mov_write_stco_tag(pb, track);
1805  return update_size(pb, pos);
1806 }
1807 
1809 {
1810  int64_t pos = avio_tell(pb);
1811  avio_wb32(pb, 0); /* size */
1812  ffio_wfourcc(pb, "dinf");
1813  mov_write_dref_tag(pb);
1814  return update_size(pb, pos);
1815 }
1816 
1818 {
1819  avio_wb32(pb, 12);
1820  ffio_wfourcc(pb, "nmhd");
1821  avio_wb32(pb, 0);
1822  return 12;
1823 }
1824 
1825 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
1826 {
1827  int64_t pos = avio_tell(pb);
1828  const char *font = "Lucida Grande";
1829  avio_wb32(pb, 0); /* size */
1830  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
1831  avio_wb32(pb, 0); /* version & flags */
1832  avio_wb16(pb, 0); /* text font */
1833  avio_wb16(pb, 0); /* text face */
1834  avio_wb16(pb, 12); /* text size */
1835  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
1836  avio_wb16(pb, 0x0000); /* text color (red) */
1837  avio_wb16(pb, 0x0000); /* text color (green) */
1838  avio_wb16(pb, 0x0000); /* text color (blue) */
1839  avio_wb16(pb, 0xffff); /* background color (red) */
1840  avio_wb16(pb, 0xffff); /* background color (green) */
1841  avio_wb16(pb, 0xffff); /* background color (blue) */
1842  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
1843  avio_write(pb, font, strlen(font)); /* font name */
1844  return update_size(pb, pos);
1845 }
1846 
1847 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
1848 {
1849  int64_t pos = avio_tell(pb);
1850  avio_wb32(pb, 0); /* size */
1851  ffio_wfourcc(pb, "gmhd");
1852  avio_wb32(pb, 0x18); /* gmin size */
1853  ffio_wfourcc(pb, "gmin");/* generic media info */
1854  avio_wb32(pb, 0); /* version & flags */
1855  avio_wb16(pb, 0x40); /* graphics mode = */
1856  avio_wb16(pb, 0x8000); /* opColor (r?) */
1857  avio_wb16(pb, 0x8000); /* opColor (g?) */
1858  avio_wb16(pb, 0x8000); /* opColor (b?) */
1859  avio_wb16(pb, 0); /* balance */
1860  avio_wb16(pb, 0); /* reserved */
1861 
1862  /*
1863  * This special text atom is required for
1864  * Apple Quicktime chapters. The contents
1865  * don't appear to be documented, so the
1866  * bytes are copied verbatim.
1867  */
1868  if (track->tag != MKTAG('c','6','0','8')) {
1869  avio_wb32(pb, 0x2C); /* size */
1870  ffio_wfourcc(pb, "text");
1871  avio_wb16(pb, 0x01);
1872  avio_wb32(pb, 0x00);
1873  avio_wb32(pb, 0x00);
1874  avio_wb32(pb, 0x00);
1875  avio_wb32(pb, 0x01);
1876  avio_wb32(pb, 0x00);
1877  avio_wb32(pb, 0x00);
1878  avio_wb32(pb, 0x00);
1879  avio_wb32(pb, 0x00004000);
1880  avio_wb16(pb, 0x0000);
1881  }
1882 
1883  if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1884  int64_t tmcd_pos = avio_tell(pb);
1885  avio_wb32(pb, 0); /* size */
1886  ffio_wfourcc(pb, "tmcd");
1887  mov_write_tcmi_tag(pb, track);
1888  update_size(pb, tmcd_pos);
1889  }
1890  return update_size(pb, pos);
1891 }
1892 
1894 {
1895  avio_wb32(pb, 16); /* size */
1896  ffio_wfourcc(pb, "smhd");
1897  avio_wb32(pb, 0); /* version & flags */
1898  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
1899  avio_wb16(pb, 0); /* reserved */
1900  return 16;
1901 }
1902 
1904 {
1905  avio_wb32(pb, 0x14); /* size (always 0x14) */
1906  ffio_wfourcc(pb, "vmhd");
1907  avio_wb32(pb, 0x01); /* version & flags */
1908  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
1909  return 0x14;
1910 }
1911 
1912 static int is_clcp_track(MOVTrack *track)
1913 {
1914  return track->tag == MKTAG('c','7','0','8') ||
1915  track->tag == MKTAG('c','6','0','8');
1916 }
1917 
1918 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
1919 {
1920  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
1921  int64_t pos = avio_tell(pb);
1922 
1923  hdlr = "dhlr";
1924  hdlr_type = "url ";
1925  descr = "DataHandler";
1926 
1927  if (track) {
1928  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
1929  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1930  hdlr_type = "vide";
1931  descr = "VideoHandler";
1932  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1933  hdlr_type = "soun";
1934  descr = "SoundHandler";
1935  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1936  if (is_clcp_track(track)) {
1937  hdlr_type = "clcp";
1938  descr = "ClosedCaptionHandler";
1939  } else {
1940  if (track->tag == MKTAG('t','x','3','g')) {
1941  hdlr_type = "sbtl";
1942  } else if (track->tag == MKTAG('m','p','4','s')) {
1943  hdlr_type = "subp";
1944  } else {
1945  hdlr_type = "text";
1946  }
1947  descr = "SubtitleHandler";
1948  }
1949  } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
1950  hdlr_type = "hint";
1951  descr = "HintHandler";
1952  } else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1953  hdlr_type = "tmcd";
1954  descr = "TimeCodeHandler";
1955  } else {
1956  char tag_buf[32];
1957  av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
1958  track->enc->codec_tag);
1959 
1960  av_log(track->enc, AV_LOG_WARNING,
1961  "Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
1962  tag_buf, track->enc->codec_tag);
1963  }
1964  if (track->st) {
1965  // hdlr.name is used by some players to identify the content title
1966  // of the track. So if an alternate handler description is
1967  // specified, use it.
1968  AVDictionaryEntry *t;
1969  t = av_dict_get(track->st->metadata, "handler", NULL, 0);
1970  if (t && utf8len(t->value))
1971  descr = t->value;
1972  }
1973  }
1974 
1975  avio_wb32(pb, 0); /* size */
1976  ffio_wfourcc(pb, "hdlr");
1977  avio_wb32(pb, 0); /* Version & flags */
1978  avio_write(pb, hdlr, 4); /* handler */
1979  ffio_wfourcc(pb, hdlr_type); /* handler type */
1980  avio_wb32(pb, 0); /* reserved */
1981  avio_wb32(pb, 0); /* reserved */
1982  avio_wb32(pb, 0); /* reserved */
1983  if (!track || track->mode == MODE_MOV)
1984  avio_w8(pb, strlen(descr)); /* pascal string */
1985  avio_write(pb, descr, strlen(descr)); /* handler description */
1986  if (track && track->mode != MODE_MOV)
1987  avio_w8(pb, 0); /* c string */
1988  return update_size(pb, pos);
1989 }
1990 
1992 {
1993  /* This atom must be present, but leaving the values at zero
1994  * seems harmless. */
1995  avio_wb32(pb, 28); /* size */
1996  ffio_wfourcc(pb, "hmhd");
1997  avio_wb32(pb, 0); /* version, flags */
1998  avio_wb16(pb, 0); /* maxPDUsize */
1999  avio_wb16(pb, 0); /* avgPDUsize */
2000  avio_wb32(pb, 0); /* maxbitrate */
2001  avio_wb32(pb, 0); /* avgbitrate */
2002  avio_wb32(pb, 0); /* reserved */
2003  return 28;
2004 }
2005 
2006 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
2007 {
2008  int64_t pos = avio_tell(pb);
2009  avio_wb32(pb, 0); /* size */
2010  ffio_wfourcc(pb, "minf");
2011  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
2012  mov_write_vmhd_tag(pb);
2013  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2014  mov_write_smhd_tag(pb);
2015  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2016  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
2017  mov_write_gmhd_tag(pb, track);
2018  } else {
2019  mov_write_nmhd_tag(pb);
2020  }
2021  } else if (track->tag == MKTAG('r','t','p',' ')) {
2022  mov_write_hmhd_tag(pb);
2023  } else if (track->tag == MKTAG('t','m','c','d')) {
2024  mov_write_gmhd_tag(pb, track);
2025  }
2026  if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
2027  mov_write_hdlr_tag(pb, NULL);
2028  mov_write_dinf_tag(pb);
2029  mov_write_stbl_tag(pb, track);
2030  return update_size(pb, pos);
2031 }
2032 
2034  MOVTrack *track)
2035 {
2036  int version = track->track_duration < INT32_MAX ? 0 : 1;
2037 
2038  if (track->mode == MODE_ISM)
2039  version = 1;
2040 
2041  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
2042  ffio_wfourcc(pb, "mdhd");
2043  avio_w8(pb, version);
2044  avio_wb24(pb, 0); /* flags */
2045  if (version == 1) {
2046  avio_wb64(pb, track->time);
2047  avio_wb64(pb, track->time);
2048  } else {
2049  avio_wb32(pb, track->time); /* creation time */
2050  avio_wb32(pb, track->time); /* modification time */
2051  }
2052  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
2053  if (!track->entry && mov->mode == MODE_ISM)
2054  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2055  else if (!track->entry)
2056  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2057  else
2058  (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
2059  avio_wb16(pb, track->language); /* language */
2060  avio_wb16(pb, 0); /* reserved (quality) */
2061 
2062  if (version != 0 && track->mode == MODE_MOV) {
2063  av_log(NULL, AV_LOG_ERROR,
2064  "FATAL error, file duration too long for timebase, this file will not be\n"
2065  "playable with quicktime. Choose a different timebase or a different\n"
2066  "container format\n");
2067  }
2068 
2069  return 32;
2070 }
2071 
2073  MOVTrack *track)
2074 {
2075  int64_t pos = avio_tell(pb);
2076  avio_wb32(pb, 0); /* size */
2077  ffio_wfourcc(pb, "mdia");
2078  mov_write_mdhd_tag(pb, mov, track);
2079  mov_write_hdlr_tag(pb, track);
2080  mov_write_minf_tag(pb, track);
2081  return update_size(pb, pos);
2082 }
2083 
2084 /* transformation matrix
2085  |a b u|
2086  |c d v|
2087  |tx ty w| */
2088 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
2089  int16_t d, int16_t tx, int16_t ty)
2090 {
2091  avio_wb32(pb, a << 16); /* 16.16 format */
2092  avio_wb32(pb, b << 16); /* 16.16 format */
2093  avio_wb32(pb, 0); /* u in 2.30 format */
2094  avio_wb32(pb, c << 16); /* 16.16 format */
2095  avio_wb32(pb, d << 16); /* 16.16 format */
2096  avio_wb32(pb, 0); /* v in 2.30 format */
2097  avio_wb32(pb, tx << 16); /* 16.16 format */
2098  avio_wb32(pb, ty << 16); /* 16.16 format */
2099  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
2100 }
2101 
2103  MOVTrack *track, AVStream *st)
2104 {
2106  track->timescale, AV_ROUND_UP);
2107  int version = duration < INT32_MAX ? 0 : 1;
2109  int rotation = 0;
2110  int group = 0;
2111 
2112 
2113  if (st) {
2114  if (mov->per_stream_grouping)
2115  group = st->index;
2116  else
2117  group = st->codec->codec_type;
2118  }
2119 
2120  if (track->flags & MOV_TRACK_ENABLED)
2121  flags |= MOV_TKHD_FLAG_ENABLED;
2122 
2123  if (track->mode == MODE_ISM)
2124  version = 1;
2125 
2126  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
2127  ffio_wfourcc(pb, "tkhd");
2128  avio_w8(pb, version);
2129  avio_wb24(pb, flags);
2130  if (version == 1) {
2131  avio_wb64(pb, track->time);
2132  avio_wb64(pb, track->time);
2133  } else {
2134  avio_wb32(pb, track->time); /* creation time */
2135  avio_wb32(pb, track->time); /* modification time */
2136  }
2137  avio_wb32(pb, track->track_id); /* track-id */
2138  avio_wb32(pb, 0); /* reserved */
2139  if (!track->entry && mov->mode == MODE_ISM)
2140  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2141  else if (!track->entry)
2142  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2143  else
2144  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
2145 
2146  avio_wb32(pb, 0); /* reserved */
2147  avio_wb32(pb, 0); /* reserved */
2148  avio_wb16(pb, 0); /* layer */
2149  avio_wb16(pb, group); /* alternate group) */
2150  /* Volume, only for audio */
2151  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2152  avio_wb16(pb, 0x0100);
2153  else
2154  avio_wb16(pb, 0);
2155  avio_wb16(pb, 0); /* reserved */
2156 
2157  /* Matrix structure */
2158  if (st && st->metadata) {
2159  AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
2160  rotation = (rot && rot->value) ? atoi(rot->value) : 0;
2161  }
2162  if (rotation == 90) {
2163  write_matrix(pb, 0, 1, -1, 0, track->enc->height, 0);
2164  } else if (rotation == 180) {
2165  write_matrix(pb, -1, 0, 0, -1, track->enc->width, track->enc->height);
2166  } else if (rotation == 270) {
2167  write_matrix(pb, 0, -1, 1, 0, 0, track->enc->width);
2168  } else {
2169  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2170  }
2171  /* Track width and height, for visual only */
2172  if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
2173  track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
2174  if (track->mode == MODE_MOV) {
2175  avio_wb32(pb, track->enc->width << 16);
2176  avio_wb32(pb, track->height << 16);
2177  } else {
2178  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2179  if (!sample_aspect_ratio || track->height != track->enc->height)
2180  sample_aspect_ratio = 1;
2181  avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
2182  avio_wb32(pb, track->height * 0x10000);
2183  }
2184  } else {
2185  avio_wb32(pb, 0);
2186  avio_wb32(pb, 0);
2187  }
2188  return 0x5c;
2189 }
2190 
2191 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
2192 {
2194  track->enc->sample_aspect_ratio.den);
2195 
2196  int64_t pos = avio_tell(pb);
2197 
2198  avio_wb32(pb, 0); /* size */
2199  ffio_wfourcc(pb, "tapt");
2200 
2201  avio_wb32(pb, 20);
2202  ffio_wfourcc(pb, "clef");
2203  avio_wb32(pb, 0);
2204  avio_wb32(pb, width << 16);
2205  avio_wb32(pb, track->enc->height << 16);
2206 
2207  avio_wb32(pb, 20);
2208  ffio_wfourcc(pb, "prof");
2209  avio_wb32(pb, 0);
2210  avio_wb32(pb, width << 16);
2211  avio_wb32(pb, track->enc->height << 16);
2212 
2213  avio_wb32(pb, 20);
2214  ffio_wfourcc(pb, "enof");
2215  avio_wb32(pb, 0);
2216  avio_wb32(pb, track->enc->width << 16);
2217  avio_wb32(pb, track->enc->height << 16);
2218 
2219  return update_size(pb, pos);
2220 }
2221 
2222 // This box seems important for the psp playback ... without it the movie seems to hang
2224  MOVTrack *track)
2225 {
2227  track->timescale, AV_ROUND_UP);
2228  int version = duration < INT32_MAX ? 0 : 1;
2229  int entry_size, entry_count, size;
2230  int64_t delay, start_ct = track->cluster[0].cts;
2231  delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
2232  track->timescale, AV_ROUND_DOWN);
2233  version |= delay < INT32_MAX ? 0 : 1;
2234 
2235  entry_size = (version == 1) ? 20 : 12;
2236  entry_count = 1 + (delay > 0);
2237  size = 24 + entry_count * entry_size;
2238 
2239  /* write the atom data */
2240  avio_wb32(pb, size);
2241  ffio_wfourcc(pb, "edts");
2242  avio_wb32(pb, size - 8);
2243  ffio_wfourcc(pb, "elst");
2244  avio_w8(pb, version);
2245  avio_wb24(pb, 0); /* flags */
2246 
2247  avio_wb32(pb, entry_count);
2248  if (delay > 0) { /* add an empty edit to delay presentation */
2249  /* In the positive delay case, the delay includes the cts
2250  * offset, and the second edit list entry below trims out
2251  * the same amount from the actual content. This makes sure
2252  * that the offsetted last sample is included in the edit
2253  * list duration as well. */
2254  if (version == 1) {
2255  avio_wb64(pb, delay);
2256  avio_wb64(pb, -1);
2257  } else {
2258  avio_wb32(pb, delay);
2259  avio_wb32(pb, -1);
2260  }
2261  avio_wb32(pb, 0x00010000);
2262  } else {
2263  /* Avoid accidentally ending up with start_ct = -1 which has got a
2264  * special meaning. Normally start_ct should end up positive or zero
2265  * here, but use FFMIN in case dts is a a small positive integer
2266  * rounded to 0 when represented in MOV_TIMESCALE units. */
2268  start_ct = -FFMIN(track->cluster[0].dts, 0);
2269  /* Note, this delay is calculated from the pts of the first sample,
2270  * ensuring that we don't reduce the duration for cases with
2271  * dts<0 pts=0. */
2272  duration += delay;
2273  }
2274 
2275  /* For fragmented files, we don't know the full length yet. Setting
2276  * duration to 0 allows us to only specify the offset, including
2277  * the rest of the content (from all future fragments) without specifying
2278  * an explicit duration. */
2279  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2280  duration = 0;
2281 
2282  /* duration */
2283  if (version == 1) {
2284  avio_wb64(pb, duration);
2285  avio_wb64(pb, start_ct);
2286  } else {
2287  avio_wb32(pb, duration);
2288  avio_wb32(pb, start_ct);
2289  }
2290  avio_wb32(pb, 0x00010000);
2291  return size;
2292 }
2293 
2294 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
2295 {
2296  avio_wb32(pb, 20); // size
2297  ffio_wfourcc(pb, "tref");
2298  avio_wb32(pb, 12); // size (subatom)
2299  avio_wl32(pb, track->tref_tag);
2300  avio_wb32(pb, track->tref_id);
2301  return 20;
2302 }
2303 
2304 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
2306 {
2307  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
2308  ffio_wfourcc(pb, "uuid");
2309  ffio_wfourcc(pb, "USMT");
2310  avio_wb32(pb, 0x21d24fce);
2311  avio_wb32(pb, 0xbb88695c);
2312  avio_wb32(pb, 0xfac9c740);
2313  avio_wb32(pb, 0x1c); // another size here!
2314  ffio_wfourcc(pb, "MTDT");
2315  avio_wb32(pb, 0x00010012);
2316  avio_wb32(pb, 0x0a);
2317  avio_wb32(pb, 0x55c40000);
2318  avio_wb32(pb, 0x1);
2319  avio_wb32(pb, 0x0);
2320  return 0x34;
2321 }
2322 
2323 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
2324 {
2325  AVFormatContext *ctx = track->rtp_ctx;
2326  char buf[1000] = "";
2327  int len;
2328 
2329  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
2330  NULL, NULL, 0, 0, ctx);
2331  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
2332  len = strlen(buf);
2333 
2334  avio_wb32(pb, len + 24);
2335  ffio_wfourcc(pb, "udta");
2336  avio_wb32(pb, len + 16);
2337  ffio_wfourcc(pb, "hnti");
2338  avio_wb32(pb, len + 8);
2339  ffio_wfourcc(pb, "sdp ");
2340  avio_write(pb, buf, len);
2341  return len + 24;
2342 }
2343 
2345  const char *tag, const char *str)
2346 {
2347  int64_t pos = avio_tell(pb);
2348  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
2349  if (!t || !utf8len(t->value))
2350  return 0;
2351 
2352  avio_wb32(pb, 0); /* size */
2353  ffio_wfourcc(pb, tag); /* type */
2354  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
2355  return update_size(pb, pos);
2356 }
2357 
2359  AVStream *st)
2360 {
2361  AVIOContext *pb_buf;
2362  int ret, size;
2363  uint8_t *buf;
2364 
2365  if (!st || mov->fc->flags & AVFMT_FLAG_BITEXACT)
2366  return 0;
2367 
2368  ret = avio_open_dyn_buf(&pb_buf);
2369  if (ret < 0)
2370  return ret;
2371 
2372  if (mov->mode & MODE_MP4)
2373  mov_write_track_metadata(pb_buf, st, "name", "title");
2374 
2375  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2376  avio_wb32(pb, size + 8);
2377  ffio_wfourcc(pb, "udta");
2378  avio_write(pb, buf, size);
2379  }
2380  av_free(buf);
2381 
2382  return 0;
2383 }
2384 
2386  MOVTrack *track, AVStream *st)
2387 {
2388  int64_t pos = avio_tell(pb);
2389  avio_wb32(pb, 0); /* size */
2390  ffio_wfourcc(pb, "trak");
2391  mov_write_tkhd_tag(pb, mov, track, st);
2392 
2393  av_assert2(mov->use_editlist >= 0);
2394 
2395 
2396  if (track->entry) {
2397  if (mov->use_editlist)
2398  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
2399  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
2400  av_log(mov->fc, AV_LOG_WARNING,
2401  "Not writing any edit list even though one would have been required\n");
2402  }
2403 
2404  if (track->tref_tag)
2405  mov_write_tref_tag(pb, track);
2406  mov_write_mdia_tag(pb, mov, track);
2407  if (track->mode == MODE_PSP)
2408  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
2409  if (track->tag == MKTAG('r','t','p',' '))
2410  mov_write_udta_sdp(pb, track);
2411  if (track->mode == MODE_MOV) {
2412  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2413  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2414  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
2415  mov_write_tapt_tag(pb, track);
2416  }
2417  }
2418  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
2419  mov_write_tapt_tag(pb, track);
2420  }
2421  }
2422  mov_write_track_udta_tag(pb, mov, st);
2423  return update_size(pb, pos);
2424 }
2425 
2427 {
2428  int i, has_audio = 0, has_video = 0;
2429  int64_t pos = avio_tell(pb);
2430  int audio_profile = mov->iods_audio_profile;
2431  int video_profile = mov->iods_video_profile;
2432  for (i = 0; i < mov->nb_streams; i++) {
2433  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
2434  has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
2435  has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
2436  }
2437  }
2438  if (audio_profile < 0)
2439  audio_profile = 0xFF - has_audio;
2440  if (video_profile < 0)
2441  video_profile = 0xFF - has_video;
2442  avio_wb32(pb, 0x0); /* size */
2443  ffio_wfourcc(pb, "iods");
2444  avio_wb32(pb, 0); /* version & flags */
2445  put_descr(pb, 0x10, 7);
2446  avio_wb16(pb, 0x004f);
2447  avio_w8(pb, 0xff);
2448  avio_w8(pb, 0xff);
2449  avio_w8(pb, audio_profile);
2450  avio_w8(pb, video_profile);
2451  avio_w8(pb, 0xff);
2452  return update_size(pb, pos);
2453 }
2454 
2455 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
2456 {
2457  avio_wb32(pb, 0x20); /* size */
2458  ffio_wfourcc(pb, "trex");
2459  avio_wb32(pb, 0); /* version & flags */
2460  avio_wb32(pb, track->track_id); /* track ID */
2461  avio_wb32(pb, 1); /* default sample description index */
2462  avio_wb32(pb, 0); /* default sample duration */
2463  avio_wb32(pb, 0); /* default sample size */
2464  avio_wb32(pb, 0); /* default sample flags */
2465  return 0;
2466 }
2467 
2469 {
2470  int64_t pos = avio_tell(pb);
2471  int i;
2472  avio_wb32(pb, 0x0); /* size */
2473  ffio_wfourcc(pb, "mvex");
2474  for (i = 0; i < mov->nb_streams; i++)
2475  mov_write_trex_tag(pb, &mov->tracks[i]);
2476  return update_size(pb, pos);
2477 }
2478 
2480 {
2481  int max_track_id = 1, i;
2482  int64_t max_track_len_temp, max_track_len = 0;
2483  int version;
2484 
2485  for (i = 0; i < mov->nb_streams; i++) {
2486  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
2487  max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
2488  MOV_TIMESCALE,
2489  mov->tracks[i].timescale,
2490  AV_ROUND_UP);
2491  if (max_track_len < max_track_len_temp)
2492  max_track_len = max_track_len_temp;
2493  if (max_track_id < mov->tracks[i].track_id)
2494  max_track_id = mov->tracks[i].track_id;
2495  }
2496  }
2497 
2498  version = max_track_len < UINT32_MAX ? 0 : 1;
2499  (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
2500  ffio_wfourcc(pb, "mvhd");
2501  avio_w8(pb, version);
2502  avio_wb24(pb, 0); /* flags */
2503  if (version == 1) {
2504  avio_wb64(pb, mov->time);
2505  avio_wb64(pb, mov->time);
2506  } else {
2507  avio_wb32(pb, mov->time); /* creation time */
2508  avio_wb32(pb, mov->time); /* modification time */
2509  }
2510  avio_wb32(pb, MOV_TIMESCALE);
2511  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
2512 
2513  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
2514  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
2515  avio_wb16(pb, 0); /* reserved */
2516  avio_wb32(pb, 0); /* reserved */
2517  avio_wb32(pb, 0); /* reserved */
2518 
2519  /* Matrix structure */
2520  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2521 
2522  avio_wb32(pb, 0); /* reserved (preview time) */
2523  avio_wb32(pb, 0); /* reserved (preview duration) */
2524  avio_wb32(pb, 0); /* reserved (poster time) */
2525  avio_wb32(pb, 0); /* reserved (selection time) */
2526  avio_wb32(pb, 0); /* reserved (selection duration) */
2527  avio_wb32(pb, 0); /* reserved (current time) */
2528  avio_wb32(pb, max_track_id + 1); /* Next track id */
2529  return 0x6c;
2530 }
2531 
2533  AVFormatContext *s)
2534 {
2535  avio_wb32(pb, 33); /* size */
2536  ffio_wfourcc(pb, "hdlr");
2537  avio_wb32(pb, 0);
2538  avio_wb32(pb, 0);
2539  ffio_wfourcc(pb, "mdir");
2540  ffio_wfourcc(pb, "appl");
2541  avio_wb32(pb, 0);
2542  avio_wb32(pb, 0);
2543  avio_w8(pb, 0);
2544  return 33;
2545 }
2546 
2547 /* helper function to write a data tag with the specified string as data */
2548 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
2549 {
2550  if (long_style) {
2551  int size = 16 + strlen(data);
2552  avio_wb32(pb, size); /* size */
2553  ffio_wfourcc(pb, "data");
2554  avio_wb32(pb, 1);
2555  avio_wb32(pb, 0);
2556  avio_write(pb, data, strlen(data));
2557  return size;
2558  } else {
2559  if (!lang)
2560  lang = ff_mov_iso639_to_lang("und", 1);
2561  avio_wb16(pb, strlen(data)); /* string length */
2562  avio_wb16(pb, lang);
2563  avio_write(pb, data, strlen(data));
2564  return strlen(data) + 4;
2565  }
2566 }
2567 
2568 static int mov_write_string_tag(AVIOContext *pb, const char *name,
2569  const char *value, int lang, int long_style)
2570 {
2571  int size = 0;
2572  if (value && value[0]) {
2573  int64_t pos = avio_tell(pb);
2574  avio_wb32(pb, 0); /* size */
2575  ffio_wfourcc(pb, name);
2576  mov_write_string_data_tag(pb, value, lang, long_style);
2577  size = update_size(pb, pos);
2578  }
2579  return size;
2580 }
2581 
2583  const char *name, const char *tag,
2584  int long_style)
2585 {
2586  int l, lang = 0, len, len2;
2587  AVDictionaryEntry *t, *t2 = NULL;
2588  char tag2[16];
2589 
2590  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2591  return 0;
2592 
2593  len = strlen(t->key);
2594  snprintf(tag2, sizeof(tag2), "%s-", tag);
2595  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
2596  len2 = strlen(t2->key);
2597  if (len2 == len + 4 && !strcmp(t->value, t2->value)
2598  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
2599  lang = l;
2600  break;
2601  }
2602  }
2603  return mov_write_string_tag(pb, name, t->value, lang, long_style);
2604 }
2605 
2606 /* iTunes bpm number */
2608 {
2609  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
2610  int size = 0, tmpo = t ? atoi(t->value) : 0;
2611  if (tmpo) {
2612  size = 26;
2613  avio_wb32(pb, size);
2614  ffio_wfourcc(pb, "tmpo");
2615  avio_wb32(pb, size-8); /* size */
2616  ffio_wfourcc(pb, "data");
2617  avio_wb32(pb, 0x15); //type specifier
2618  avio_wb32(pb, 0);
2619  avio_wb16(pb, tmpo); // data
2620  }
2621  return size;
2622 }
2623 
2624 /* iTunes track or disc number */
2626  AVFormatContext *s, int disc)
2627 {
2629  disc ? "disc" : "track",
2630  NULL, 0);
2631  int size = 0, track = t ? atoi(t->value) : 0;
2632  if (track) {
2633  int tracks = 0;
2634  char *slash = strchr(t->value, '/');
2635  if (slash)
2636  tracks = atoi(slash + 1);
2637  avio_wb32(pb, 32); /* size */
2638  ffio_wfourcc(pb, disc ? "disk" : "trkn");
2639  avio_wb32(pb, 24); /* size */
2640  ffio_wfourcc(pb, "data");
2641  avio_wb32(pb, 0); // 8 bytes empty
2642  avio_wb32(pb, 0);
2643  avio_wb16(pb, 0); // empty
2644  avio_wb16(pb, track); // track / disc number
2645  avio_wb16(pb, tracks); // total track / disc number
2646  avio_wb16(pb, 0); // empty
2647  size = 32;
2648  }
2649  return size;
2650 }
2651 
2653  const char *name, const char *tag,
2654  int len)
2655 {
2656  AVDictionaryEntry *t = NULL;
2657  uint8_t num;
2658  int size = 24 + len;
2659 
2660  if (len != 1 && len != 4)
2661  return -1;
2662 
2663  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2664  return 0;
2665  num = atoi(t->value);
2666 
2667  avio_wb32(pb, size);
2668  ffio_wfourcc(pb, name);
2669  avio_wb32(pb, size - 8);
2670  ffio_wfourcc(pb, "data");
2671  avio_wb32(pb, 0x15);
2672  avio_wb32(pb, 0);
2673  if (len==4) avio_wb32(pb, num);
2674  else avio_w8 (pb, num);
2675 
2676  return size;
2677 }
2678 
2679 /* iTunes meta data list */
2681  AVFormatContext *s)
2682 {
2683  int64_t pos = avio_tell(pb);
2684  avio_wb32(pb, 0); /* size */
2685  ffio_wfourcc(pb, "ilst");
2686  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
2687  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
2688  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
2689  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
2690  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
2691  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
2692  if (!mov->exact &&
2693  !mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
2694  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
2695  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
2696  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
2697  mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
2698  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
2699  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
2700  mov_write_string_metadata(s, pb, "desc", "description",1);
2701  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
2702  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
2703  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
2704  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
2705  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
2706  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
2707  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
2708  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
2709  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
2710  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
2711  mov_write_trkn_tag(pb, mov, s, 0); // track number
2712  mov_write_trkn_tag(pb, mov, s, 1); // disc number
2713  mov_write_tmpo_tag(pb, s);
2714  return update_size(pb, pos);
2715 }
2716 
2717 /* iTunes meta data tag */
2719  AVFormatContext *s)
2720 {
2721  int size = 0;
2722  int64_t pos = avio_tell(pb);
2723  avio_wb32(pb, 0); /* size */
2724  ffio_wfourcc(pb, "meta");
2725  avio_wb32(pb, 0);
2726  mov_write_itunes_hdlr_tag(pb, mov, s);
2727  mov_write_ilst_tag(pb, mov, s);
2728  size = update_size(pb, pos);
2729  return size;
2730 }
2731 
2733  const char *name, const char *key)
2734 {
2735  int len;
2736  AVDictionaryEntry *t;
2737 
2738  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
2739  return 0;
2740 
2741  len = strlen(t->value);
2742  if (len > 0) {
2743  int size = len + 8;
2744  avio_wb32(pb, size);
2745  ffio_wfourcc(pb, name);
2746  avio_write(pb, t->value, len);
2747  return size;
2748  }
2749  return 0;
2750 }
2751 
2752 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
2753 {
2754  int val;
2755  while (*b) {
2756  GET_UTF8(val, *b++, return -1;)
2757  avio_wb16(pb, val);
2758  }
2759  avio_wb16(pb, 0x00);
2760  return 0;
2761 }
2762 
2763 static uint16_t language_code(const char *str)
2764 {
2765  return (((str[0] - 0x60) & 0x1F) << 10) +
2766  (((str[1] - 0x60) & 0x1F) << 5) +
2767  (( str[2] - 0x60) & 0x1F);
2768 }
2769 
2771  const char *tag, const char *str)
2772 {
2773  int64_t pos = avio_tell(pb);
2774  AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
2775  if (!t || !utf8len(t->value))
2776  return 0;
2777  avio_wb32(pb, 0); /* size */
2778  ffio_wfourcc(pb, tag); /* type */
2779  avio_wb32(pb, 0); /* version + flags */
2780  if (!strcmp(tag, "yrrc"))
2781  avio_wb16(pb, atoi(t->value));
2782  else {
2783  avio_wb16(pb, language_code("eng")); /* language */
2784  avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
2785  if (!strcmp(tag, "albm") &&
2786  (t = av_dict_get(s->metadata, "track", NULL, 0)))
2787  avio_w8(pb, atoi(t->value));
2788  }
2789  return update_size(pb, pos);
2790 }
2791 
2793 {
2794  int64_t pos = avio_tell(pb);
2795  int i, nb_chapters = FFMIN(s->nb_chapters, 255);
2796 
2797  avio_wb32(pb, 0); // size
2798  ffio_wfourcc(pb, "chpl");
2799  avio_wb32(pb, 0x01000000); // version + flags
2800  avio_wb32(pb, 0); // unknown
2801  avio_w8(pb, nb_chapters);
2802 
2803  for (i = 0; i < nb_chapters; i++) {
2804  AVChapter *c = s->chapters[i];
2805  AVDictionaryEntry *t;
2806  avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
2807 
2808  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
2809  int len = FFMIN(strlen(t->value), 255);
2810  avio_w8(pb, len);
2811  avio_write(pb, t->value, len);
2812  } else
2813  avio_w8(pb, 0);
2814  }
2815  return update_size(pb, pos);
2816 }
2817 
2819  AVFormatContext *s)
2820 {
2821  AVIOContext *pb_buf;
2822  int ret, size;
2823  uint8_t *buf;
2824 
2825  ret = avio_open_dyn_buf(&pb_buf);
2826  if (ret < 0)
2827  return ret;
2828 
2829  if (mov->mode & MODE_3GP) {
2830  mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
2831  mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
2832  mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
2833  mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
2834  mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
2835  mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
2836  mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
2837  mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
2838  } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
2839  mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
2840  mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
2841  mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
2842  mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
2843  mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
2844  mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
2845  // currently ignored by mov.c
2846  mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
2847  // add support for libquicktime, this atom is also actually read by mov.c
2848  mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
2849  mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
2850  mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
2851  mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
2852  } else {
2853  /* iTunes meta data */
2854  mov_write_meta_tag(pb_buf, mov, s);
2855  }
2856 
2857  if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
2858  mov_write_chpl_tag(pb_buf, s);
2859 
2860  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2861  avio_wb32(pb, size + 8);
2862  ffio_wfourcc(pb, "udta");
2863  avio_write(pb, buf, size);
2864  }
2865  av_free(buf);
2866 
2867  return 0;
2868 }
2869 
2871  const char *str, const char *lang, int type)
2872 {
2873  int len = utf8len(str) + 1;
2874  if (len <= 0)
2875  return;
2876  avio_wb16(pb, len * 2 + 10); /* size */
2877  avio_wb32(pb, type); /* type */
2878  avio_wb16(pb, language_code(lang)); /* language */
2879  avio_wb16(pb, 0x01); /* ? */
2880  ascii_to_wc(pb, str);
2881 }
2882 
2884 {
2885  MOVMuxContext *mov = s->priv_data;
2886  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
2887  int64_t pos, pos2;
2888 
2889  if (title) {
2890  pos = avio_tell(pb);
2891  avio_wb32(pb, 0); /* size placeholder*/
2892  ffio_wfourcc(pb, "uuid");
2893  ffio_wfourcc(pb, "USMT");
2894  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
2895  avio_wb32(pb, 0xbb88695c);
2896  avio_wb32(pb, 0xfac9c740);
2897 
2898  pos2 = avio_tell(pb);
2899  avio_wb32(pb, 0); /* size placeholder*/
2900  ffio_wfourcc(pb, "MTDT");
2901  avio_wb16(pb, 4);
2902 
2903  // ?
2904  avio_wb16(pb, 0x0C); /* size */
2905  avio_wb32(pb, 0x0B); /* type */
2906  avio_wb16(pb, language_code("und")); /* language */
2907  avio_wb16(pb, 0x0); /* ? */
2908  avio_wb16(pb, 0x021C); /* data */
2909 
2910  if (!mov->exact)
2911  mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
2912  mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
2913  mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
2914 
2915  update_size(pb, pos2);
2916  return update_size(pb, pos);
2917  }
2918 
2919  return 0;
2920 }
2921 
2922 static void build_chunks(MOVTrack *trk)
2923 {
2924  int i;
2925  MOVIentry *chunk = &trk->cluster[0];
2926  uint64_t chunkSize = chunk->size;
2927  chunk->chunkNum = 1;
2928  if (trk->chunkCount)
2929  return;
2930  trk->chunkCount = 1;
2931  for (i = 1; i<trk->entry; i++){
2932  if (chunk->pos + chunkSize == trk->cluster[i].pos &&
2933  chunkSize + trk->cluster[i].size < (1<<20)){
2934  chunkSize += trk->cluster[i].size;
2935  chunk->samples_in_chunk += trk->cluster[i].entries;
2936  } else {
2937  trk->cluster[i].chunkNum = chunk->chunkNum+1;
2938  chunk=&trk->cluster[i];
2939  chunkSize = chunk->size;
2940  trk->chunkCount++;
2941  }
2942  }
2943 }
2944 
2946  AVFormatContext *s)
2947 {
2948  int i;
2949  int64_t pos = avio_tell(pb);
2950  avio_wb32(pb, 0); /* size placeholder*/
2951  ffio_wfourcc(pb, "moov");
2952 
2953  for (i = 0; i < mov->nb_streams; i++) {
2954  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
2955  continue;
2956 
2957  mov->tracks[i].time = mov->time;
2958  mov->tracks[i].track_id = i + 1;
2959 
2960  if (mov->tracks[i].entry)
2961  build_chunks(&mov->tracks[i]);
2962  }
2963 
2964  if (mov->chapter_track)
2965  for (i = 0; i < s->nb_streams; i++) {
2966  mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
2967  mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
2968  }
2969  for (i = 0; i < mov->nb_streams; i++) {
2970  if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
2971  mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
2972  mov->tracks[i].tref_id =
2973  mov->tracks[mov->tracks[i].src_track].track_id;
2974  }
2975  }
2976  for (i = 0; i < mov->nb_streams; i++) {
2977  if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
2978  int src_trk = mov->tracks[i].src_track;
2979  mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
2980  mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
2981  //src_trk may have a different timescale than the tmcd track
2982  mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
2983  mov->tracks[i].timescale,
2984  mov->tracks[src_trk].timescale);
2985  }
2986  }
2987 
2988  mov_write_mvhd_tag(pb, mov);
2989  if (mov->mode != MODE_MOV && !mov->iods_skip)
2990  mov_write_iods_tag(pb, mov);
2991  for (i = 0; i < mov->nb_streams; i++) {
2992  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
2993  mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
2994  }
2995  }
2996  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2997  mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
2998 
2999  if (mov->mode == MODE_PSP)
3000  mov_write_uuidusmt_tag(pb, s);
3001  else
3002  mov_write_udta_tag(pb, mov, s);
3003 
3004  return update_size(pb, pos);
3005 }
3006 
3007 static void param_write_int(AVIOContext *pb, const char *name, int value)
3008 {
3009  avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
3010 }
3011 
3012 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
3013 {
3014  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
3015 }
3016 
3017 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
3018 {
3019  char buf[150];
3020  len = FFMIN(sizeof(buf) / 2 - 1, len);
3021  ff_data_to_hex(buf, value, len, 0);
3022  buf[2 * len] = '\0';
3023  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
3024 }
3025 
3027 {
3028  int64_t pos = avio_tell(pb);
3029  int i;
3030  static const uint8_t uuid[] = {
3031  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3032  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3033  };
3034 
3035  avio_wb32(pb, 0);
3036  ffio_wfourcc(pb, "uuid");
3037  avio_write(pb, uuid, sizeof(uuid));
3038  avio_wb32(pb, 0);
3039 
3040  avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
3041  avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
3042  avio_printf(pb, "<head>\n");
3043  if (!mov->exact)
3044  avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
3046  avio_printf(pb, "</head>\n");
3047  avio_printf(pb, "<body>\n");
3048  avio_printf(pb, "<switch>\n");
3049  for (i = 0; i < mov->nb_streams; i++) {
3050  MOVTrack *track = &mov->tracks[i];
3051  const char *type;
3052  /* track->track_id is initialized in write_moov, and thus isn't known
3053  * here yet */
3054  int track_id = i + 1;
3055 
3056  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3057  type = "video";
3058  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
3059  type = "audio";
3060  } else {
3061  continue;
3062  }
3063  avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
3064  track->enc->bit_rate);
3065  param_write_int(pb, "systemBitrate", track->enc->bit_rate);
3066  param_write_int(pb, "trackID", track_id);
3067  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3068  if (track->enc->codec_id == AV_CODEC_ID_H264) {
3069  uint8_t *ptr;
3070  int size = track->enc->extradata_size;
3071  if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
3072  &size)) {
3073  param_write_hex(pb, "CodecPrivateData",
3074  ptr ? ptr : track->enc->extradata,
3075  size);
3076  av_free(ptr);
3077  }
3078  param_write_string(pb, "FourCC", "H264");
3079  } else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
3080  param_write_string(pb, "FourCC", "WVC1");
3081  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3082  track->enc->extradata_size);
3083  }
3084  param_write_int(pb, "MaxWidth", track->enc->width);
3085  param_write_int(pb, "MaxHeight", track->enc->height);
3086  param_write_int(pb, "DisplayWidth", track->enc->width);
3087  param_write_int(pb, "DisplayHeight", track->enc->height);
3088  } else {
3089  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
3090  param_write_string(pb, "FourCC", "AACL");
3091  } else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
3092  param_write_string(pb, "FourCC", "WMAP");
3093  }
3094  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3095  track->enc->extradata_size);
3097  track->enc->codec_id));
3098  param_write_int(pb, "Channels", track->enc->channels);
3099  param_write_int(pb, "SamplingRate", track->enc->sample_rate);
3100  param_write_int(pb, "BitsPerSample", 16);
3101  param_write_int(pb, "PacketSize", track->enc->block_align ?
3102  track->enc->block_align : 4);
3103  }
3104  avio_printf(pb, "</%s>\n", type);
3105  }
3106  avio_printf(pb, "</switch>\n");
3107  avio_printf(pb, "</body>\n");
3108  avio_printf(pb, "</smil>\n");
3109 
3110  return update_size(pb, pos);
3111 }
3112 
3114 {
3115  avio_wb32(pb, 16);
3116  ffio_wfourcc(pb, "mfhd");
3117  avio_wb32(pb, 0);
3118  avio_wb32(pb, mov->fragments);
3119  return 0;
3120 }
3121 
3123  MOVTrack *track, int64_t moof_offset)
3124 {
3125  int64_t pos = avio_tell(pb);
3128  if (!track->entry) {
3129  flags |= MOV_TFHD_DURATION_IS_EMPTY;
3130  } else {
3131  flags |= MOV_TFHD_DEFAULT_FLAGS;
3132  }
3134  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
3135  if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
3136  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
3138  }
3139 
3140  /* Don't set a default sample size, the silverlight player refuses
3141  * to play files with that set. Don't set a default sample duration,
3142  * WMP freaks out if it is set. Don't set a base data offset, PIFF
3143  * file format says it MUST NOT be set. */
3144  if (track->mode == MODE_ISM)
3147 
3148  avio_wb32(pb, 0); /* size placeholder */
3149  ffio_wfourcc(pb, "tfhd");
3150  avio_w8(pb, 0); /* version */
3151  avio_wb24(pb, flags);
3152 
3153  avio_wb32(pb, track->track_id); /* track-id */
3154  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
3155  avio_wb64(pb, moof_offset);
3156  if (flags & MOV_TFHD_DEFAULT_DURATION) {
3157  track->default_duration = get_cluster_duration(track, 0);
3158  avio_wb32(pb, track->default_duration);
3159  }
3160  if (flags & MOV_TFHD_DEFAULT_SIZE) {
3161  track->default_size = track->entry ? track->cluster[0].size : 1;
3162  avio_wb32(pb, track->default_size);
3163  } else
3164  track->default_size = -1;
3165 
3166  if (flags & MOV_TFHD_DEFAULT_FLAGS) {
3167  track->default_sample_flags =
3168  track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
3171  avio_wb32(pb, track->default_sample_flags);
3172  }
3173 
3174  return update_size(pb, pos);
3175 }
3176 
3177 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
3178 {
3181 }
3182 
3184  MOVTrack *track, int moof_size)
3185 {
3186  int64_t pos = avio_tell(pb);
3187  uint32_t flags = MOV_TRUN_DATA_OFFSET;
3188  int i;
3189 
3190  for (i = 0; i < track->entry; i++) {
3191  if (get_cluster_duration(track, i) != track->default_duration)
3192  flags |= MOV_TRUN_SAMPLE_DURATION;
3193  if (track->cluster[i].size != track->default_size)
3194  flags |= MOV_TRUN_SAMPLE_SIZE;
3195  if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
3196  flags |= MOV_TRUN_SAMPLE_FLAGS;
3197  }
3198  if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
3199  flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
3200  if (track->flags & MOV_TRACK_CTTS)
3201  flags |= MOV_TRUN_SAMPLE_CTS;
3202 
3203  avio_wb32(pb, 0); /* size placeholder */
3204  ffio_wfourcc(pb, "trun");
3205  avio_w8(pb, 0); /* version */
3206  avio_wb24(pb, flags);
3207 
3208  avio_wb32(pb, track->entry); /* sample count */
3209  if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
3211  !mov->first_trun)
3212  avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
3213  else
3214  avio_wb32(pb, moof_size + 8 + track->data_offset +
3215  track->cluster[0].pos); /* data offset */
3216  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
3217  avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
3218 
3219  for (i = 0; i < track->entry; i++) {
3220  if (flags & MOV_TRUN_SAMPLE_DURATION)
3221  avio_wb32(pb, get_cluster_duration(track, i));
3222  if (flags & MOV_TRUN_SAMPLE_SIZE)
3223  avio_wb32(pb, track->cluster[i].size);
3224  if (flags & MOV_TRUN_SAMPLE_FLAGS)
3225  avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
3226  if (flags & MOV_TRUN_SAMPLE_CTS)
3227  avio_wb32(pb, track->cluster[i].cts);
3228  }
3229 
3230  mov->first_trun = 0;
3231  return update_size(pb, pos);
3232 }
3233 
3234 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
3235 {
3236  int64_t pos = avio_tell(pb);
3237  static const uint8_t uuid[] = {
3238  0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
3239  0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
3240  };
3241 
3242  avio_wb32(pb, 0); /* size placeholder */
3243  ffio_wfourcc(pb, "uuid");
3244  avio_write(pb, uuid, sizeof(uuid));
3245  avio_w8(pb, 1);
3246  avio_wb24(pb, 0);
3247  avio_wb64(pb, track->frag_start);
3248  avio_wb64(pb, track->start_dts + track->track_duration -
3249  track->cluster[0].dts);
3250 
3251  return update_size(pb, pos);
3252 }
3253 
3255  MOVTrack *track, int entry)
3256 {
3257  int n = track->nb_frag_info - 1 - entry, i;
3258  int size = 8 + 16 + 4 + 1 + 16*n;
3259  static const uint8_t uuid[] = {
3260  0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
3261  0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
3262  };
3263 
3264  if (entry < 0)
3265  return 0;
3266 
3267  avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
3268  avio_wb32(pb, size);
3269  ffio_wfourcc(pb, "uuid");
3270  avio_write(pb, uuid, sizeof(uuid));
3271  avio_w8(pb, 1);
3272  avio_wb24(pb, 0);
3273  avio_w8(pb, n);
3274  for (i = 0; i < n; i++) {
3275  int index = entry + 1 + i;
3276  avio_wb64(pb, track->frag_info[index].time);
3277  avio_wb64(pb, track->frag_info[index].duration);
3278  }
3279  if (n < mov->ism_lookahead) {
3280  int free_size = 16 * (mov->ism_lookahead - n);
3281  avio_wb32(pb, free_size);
3282  ffio_wfourcc(pb, "free");
3283  ffio_fill(pb, 0, free_size - 8);
3284  }
3285 
3286  return 0;
3287 }
3288 
3290  MOVTrack *track)
3291 {
3292  int64_t pos = avio_tell(pb);
3293  int i;
3294  for (i = 0; i < mov->ism_lookahead; i++) {
3295  /* Update the tfrf tag for the last ism_lookahead fragments,
3296  * nb_frag_info - 1 is the next fragment to be written. */
3297  mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
3298  }
3299  avio_seek(pb, pos, SEEK_SET);
3300  return 0;
3301 }
3302 
3303 static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
3304  int size)
3305 {
3306  int i;
3307  for (i = 0; i < mov->nb_streams; i++) {
3308  MOVTrack *track = &mov->tracks[i];
3309  MOVFragmentInfo *info;
3310  if ((tracks >= 0 && i != tracks) || !track->entry)
3311  continue;
3312  track->nb_frag_info++;
3313  if (track->nb_frag_info >= track->frag_info_capacity) {
3314  unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
3315  if (av_reallocp_array(&track->frag_info,
3316  new_capacity,
3317  sizeof(*track->frag_info)))
3318  return AVERROR(ENOMEM);
3319  track->frag_info_capacity = new_capacity;
3320  }
3321  info = &track->frag_info[track->nb_frag_info - 1];
3322  info->offset = avio_tell(pb);
3323  info->size = size;
3324  // Try to recreate the original pts for the first packet
3325  // from the fields we have stored
3326  info->time = track->start_dts + track->frag_start +
3327  track->cluster[0].cts;
3328  // If the pts is less than zero, we will have trimmed
3329  // away parts of the media track using an edit list,
3330  // and the corresponding start presentation time is zero.
3331  if (info->time < 0)
3332  info->time = 0;
3333  info->duration = track->start_dts + track->track_duration -
3334  track->cluster[0].dts;
3335  info->tfrf_offset = 0;
3336  mov_write_tfrf_tags(pb, mov, track);
3337  }
3338  return 0;
3339 }
3340 
3341 static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
3342 {
3343  int64_t pos = avio_tell(pb);
3344 
3345  avio_wb32(pb, 0); /* size */
3346  ffio_wfourcc(pb, "tfdt");
3347  avio_w8(pb, 1); /* version */
3348  avio_wb24(pb, 0);
3349  avio_wb64(pb, track->frag_start);
3350  return update_size(pb, pos);
3351 }
3352 
3354  MOVTrack *track, int64_t moof_offset,
3355  int moof_size)
3356 {
3357  int64_t pos = avio_tell(pb);
3358  avio_wb32(pb, 0); /* size placeholder */
3359  ffio_wfourcc(pb, "traf");
3360 
3361  mov_write_tfhd_tag(pb, mov, track, moof_offset);
3362  if (mov->mode != MODE_ISM)
3363  mov_write_tfdt_tag(pb, track);
3364  mov_write_trun_tag(pb, mov, track, moof_size);
3365  if (mov->mode == MODE_ISM) {
3366  mov_write_tfxd_tag(pb, track);
3367 
3368  if (mov->ism_lookahead) {
3369  int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
3370 
3371  if (track->nb_frag_info > 0) {
3372  MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
3373  if (!info->tfrf_offset)
3374  info->tfrf_offset = avio_tell(pb);
3375  }
3376  avio_wb32(pb, 8 + size);
3377  ffio_wfourcc(pb, "free");
3378  for (i = 0; i < size; i++)
3379  avio_w8(pb, 0);
3380  }
3381  }
3382 
3383  return update_size(pb, pos);
3384 }
3385 
3387  int tracks, int moof_size)
3388 {
3389  int64_t pos = avio_tell(pb);
3390  int i;
3391 
3392  avio_wb32(pb, 0); /* size placeholder */
3393  ffio_wfourcc(pb, "moof");
3394  mov->first_trun = 1;
3395 
3396  mov_write_mfhd_tag(pb, mov);
3397  for (i = 0; i < mov->nb_streams; i++) {
3398  MOVTrack *track = &mov->tracks[i];
3399  if (tracks >= 0 && i != tracks)
3400  continue;
3401  if (!track->entry)
3402  continue;
3403  mov_write_traf_tag(pb, mov, track, pos, moof_size);
3404  }
3405 
3406  return update_size(pb, pos);
3407 }
3408 
3410  MOVTrack *track, int ref_size, int total_sidx_size)
3411 {
3412  int64_t pos = avio_tell(pb), offset_pos, end_pos;
3413  int64_t presentation_time, duration, offset;
3414  int starts_with_SAP, i, entries;
3415 
3416  if (track->entry) {
3417  entries = 1;
3418  presentation_time = track->start_dts + track->frag_start +
3419  track->cluster[0].cts;
3420  duration = track->start_dts + track->track_duration -
3421  track->cluster[0].dts;
3422  starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
3423  } else {
3424  entries = track->nb_frag_info;
3425  presentation_time = track->frag_info[0].time;
3426  }
3427 
3428  // pts<0 should be cut away using edts
3429  if (presentation_time < 0)
3430  presentation_time = 0;
3431 
3432  avio_wb32(pb, 0); /* size */
3433  ffio_wfourcc(pb, "sidx");
3434  avio_w8(pb, 1); /* version */
3435  avio_wb24(pb, 0);
3436  avio_wb32(pb, track->track_id); /* reference_ID */
3437  avio_wb32(pb, track->timescale); /* timescale */
3438  avio_wb64(pb, presentation_time); /* earliest_presentation_time */
3439  offset_pos = avio_tell(pb);
3440  avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
3441  avio_wb16(pb, 0); /* reserved */
3442 
3443  avio_wb16(pb, entries); /* reference_count */
3444  for (i = 0; i < entries; i++) {
3445  if (!track->entry) {
3446  if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
3447  av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
3448  }
3449  duration = track->frag_info[i].duration;
3450  ref_size = track->frag_info[i].size;
3451  starts_with_SAP = 1;
3452  }
3453  avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
3454  avio_wb32(pb, duration); /* subsegment_duration */
3455  avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
3456  }
3457 
3458  end_pos = avio_tell(pb);
3459  offset = pos + total_sidx_size - end_pos;
3460  avio_seek(pb, offset_pos, SEEK_SET);
3461  avio_wb64(pb, offset);
3462  avio_seek(pb, end_pos, SEEK_SET);
3463  return update_size(pb, pos);
3464 }
3465 
3467  int tracks, int ref_size)
3468 {
3469  int i, round, ret;
3470  AVIOContext *avio_buf;
3471  int total_size = 0;
3472  for (round = 0; round < 2; round++) {
3473  // First run one round to calculate the total size of all
3474  // sidx atoms.
3475  // This would be much simpler if we'd only write one sidx
3476  // atom, for the first track in the moof.
3477  if (round == 0) {
3478  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
3479  return ret;
3480  } else {
3481  avio_buf = pb;
3482  }
3483  for (i = 0; i < mov->nb_streams; i++) {
3484  MOVTrack *track = &mov->tracks[i];
3485  if (tracks >= 0 && i != tracks)
3486  continue;
3487  // When writing a sidx for the full file, entry is 0, but
3488  // we want to include all tracks. ref_size is 0 in this case,
3489  // since we read it from frag_info instead.
3490  if (!track->entry && ref_size > 0)
3491  continue;
3492  total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
3493  total_size);
3494  }
3495  if (round == 0)
3496  total_size = ffio_close_null_buf(avio_buf);
3497  }
3498  return 0;
3499 }
3500 
3501 static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
3502  int64_t mdat_size)
3503 {
3504  AVIOContext *avio_buf;
3505  int ret, moof_size;
3506 
3507  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
3508  return ret;
3509  mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
3510  moof_size = ffio_close_null_buf(avio_buf);
3511 
3512  if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_FASTSTART))
3513  mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
3514 
3515  if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
3516  return ret;
3517 
3518  return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
3519 }
3520 
3521 static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
3522 {
3523  int64_t pos = avio_tell(pb);
3524  int i;
3525 
3526  avio_wb32(pb, 0); /* size placeholder */
3527  ffio_wfourcc(pb, "tfra");
3528  avio_w8(pb, 1); /* version */
3529  avio_wb24(pb, 0);
3530 
3531  avio_wb32(pb, track->track_id);
3532  avio_wb32(pb, 0); /* length of traf/trun/sample num */
3533  avio_wb32(pb, track->nb_frag_info);
3534  for (i = 0; i < track->nb_frag_info; i++) {
3535  avio_wb64(pb, track->frag_info[i].time);
3536  avio_wb64(pb, track->frag_info[i].offset + track->data_offset);
3537  avio_w8(pb, 1); /* traf number */
3538  avio_w8(pb, 1); /* trun number */
3539  avio_w8(pb, 1); /* sample number */
3540  }
3541 
3542  return update_size(pb, pos);
3543 }
3544 
3546 {
3547  int64_t pos = avio_tell(pb);
3548  int i;
3549 
3550  avio_wb32(pb, 0); /* size placeholder */
3551  ffio_wfourcc(pb, "mfra");
3552  /* An empty mfra atom is enough to indicate to the publishing point that
3553  * the stream has ended. */
3554  if (mov->flags & FF_MOV_FLAG_ISML)
3555  return update_size(pb, pos);
3556 
3557  for (i = 0; i < mov->nb_streams; i++) {
3558  MOVTrack *track = &mov->tracks[i];
3559  if (track->nb_frag_info)
3560  mov_write_tfra_tag(pb, track);
3561  }
3562 
3563  avio_wb32(pb, 16);
3564  ffio_wfourcc(pb, "mfro");
3565  avio_wb32(pb, 0); /* version + flags */
3566  avio_wb32(pb, avio_tell(pb) + 4 - pos);
3567 
3568  return update_size(pb, pos);
3569 }
3570 
3572 {
3573  avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
3574  ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
3575 
3576  mov->mdat_pos = avio_tell(pb);
3577  avio_wb32(pb, 0); /* size placeholder*/
3578  ffio_wfourcc(pb, "mdat");
3579  return 0;
3580 }
3581 
3582 /* TODO: This needs to be more general */
3584 {
3585  MOVMuxContext *mov = s->priv_data;
3586  int64_t pos = avio_tell(pb);
3587  int has_h264 = 0, has_video = 0;
3588  int minor = 0x200;
3589  int i;
3590 
3591  for (i = 0; i < s->nb_streams; i++) {
3592  AVStream *st = s->streams[i];
3593  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3594  has_video = 1;
3595  if (st->codec->codec_id == AV_CODEC_ID_H264)
3596  has_h264 = 1;
3597  }
3598 
3599  avio_wb32(pb, 0); /* size */
3600  ffio_wfourcc(pb, "ftyp");
3601 
3602  if (mov->major_brand && strlen(mov->major_brand) >= 4)
3603  ffio_wfourcc(pb, mov->major_brand);
3604  else if (mov->mode == MODE_3GP) {
3605  ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
3606  minor = has_h264 ? 0x100 : 0x200;
3607  } else if (mov->mode & MODE_3G2) {
3608  ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
3609  minor = has_h264 ? 0x20000 : 0x10000;
3610  } else if (mov->mode == MODE_PSP)
3611  ffio_wfourcc(pb, "MSNV");
3612  else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
3613  ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof
3614  else if (mov->mode == MODE_MP4)
3615  ffio_wfourcc(pb, "isom");
3616  else if (mov->mode == MODE_IPOD)
3617  ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
3618  else if (mov->mode == MODE_ISM)
3619  ffio_wfourcc(pb, "isml");
3620  else if (mov->mode == MODE_F4V)
3621  ffio_wfourcc(pb, "f4v ");
3622  else
3623  ffio_wfourcc(pb, "qt ");
3624 
3625  avio_wb32(pb, minor);
3626 
3627  if (mov->mode == MODE_MOV)
3628  ffio_wfourcc(pb, "qt ");
3629  else if (mov->mode == MODE_ISM) {
3630  ffio_wfourcc(pb, "piff");
3631  } else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
3632  ffio_wfourcc(pb, "isom");
3633  ffio_wfourcc(pb, "iso2");
3634  if (has_h264)
3635  ffio_wfourcc(pb, "avc1");
3636  }
3637 
3638  // We add tfdt atoms when fragmenting, signal this with the iso6 compatible
3639  // brand. This is compatible with users that don't understand tfdt.
3640  if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
3641  ffio_wfourcc(pb, "iso6");
3642 
3643  if (mov->mode == MODE_3GP)
3644  ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
3645  else if (mov->mode & MODE_3G2)
3646  ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
3647  else if (mov->mode == MODE_PSP)
3648  ffio_wfourcc(pb, "MSNV");
3649  else if (mov->mode == MODE_MP4)
3650  ffio_wfourcc(pb, "mp41");
3651 
3652  if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_FASTSTART)
3653  ffio_wfourcc(pb, "dash");
3654 
3655  return update_size(pb, pos);
3656 }
3657 
3659 {
3660  AVStream *video_st = s->streams[0];
3661  AVCodecContext *video_codec = s->streams[0]->codec;
3662  AVCodecContext *audio_codec = s->streams[1]->codec;
3663  int audio_rate = audio_codec->sample_rate;
3664  // TODO: should be avg_frame_rate
3665  int frame_rate = ((video_st->time_base.den) * (0x10000)) / (video_st->time_base.num);
3666  int audio_kbitrate = audio_codec->bit_rate / 1000;
3667  int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
3668 
3669  avio_wb32(pb, 0x94); /* size */
3670  ffio_wfourcc(pb, "uuid");
3671  ffio_wfourcc(pb, "PROF");
3672 
3673  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
3674  avio_wb32(pb, 0xbb88695c);
3675  avio_wb32(pb, 0xfac9c740);
3676 
3677  avio_wb32(pb, 0x0); /* ? */
3678  avio_wb32(pb, 0x3); /* 3 sections ? */
3679 
3680  avio_wb32(pb, 0x14); /* size */
3681  ffio_wfourcc(pb, "FPRF");
3682  avio_wb32(pb, 0x0); /* ? */
3683  avio_wb32(pb, 0x0); /* ? */
3684  avio_wb32(pb, 0x0); /* ? */
3685 
3686  avio_wb32(pb, 0x2c); /* size */
3687  ffio_wfourcc(pb, "APRF"); /* audio */
3688  avio_wb32(pb, 0x0);
3689  avio_wb32(pb, 0x2); /* TrackID */
3690  ffio_wfourcc(pb, "mp4a");
3691  avio_wb32(pb, 0x20f);
3692  avio_wb32(pb, 0x0);
3693  avio_wb32(pb, audio_kbitrate);
3694  avio_wb32(pb, audio_kbitrate);
3695  avio_wb32(pb, audio_rate);
3696  avio_wb32(pb, audio_codec->channels);
3697 
3698  avio_wb32(pb, 0x34); /* size */
3699  ffio_wfourcc(pb, "VPRF"); /* video */
3700  avio_wb32(pb, 0x0);
3701  avio_wb32(pb, 0x1); /* TrackID */
3702  if (video_codec->codec_id == AV_CODEC_ID_H264) {
3703  ffio_wfourcc(pb, "avc1");
3704  avio_wb16(pb, 0x014D);
3705  avio_wb16(pb, 0x0015);
3706  } else {
3707  ffio_wfourcc(pb, "mp4v");
3708  avio_wb16(pb, 0x0000);
3709  avio_wb16(pb, 0x0103);
3710  }
3711  avio_wb32(pb, 0x0);
3712  avio_wb32(pb, video_kbitrate);
3713  avio_wb32(pb, video_kbitrate);
3714  avio_wb32(pb, frame_rate);
3715  avio_wb32(pb, frame_rate);
3716  avio_wb16(pb, video_codec->width);
3717  avio_wb16(pb, video_codec->height);
3718  avio_wb32(pb, 0x010001); /* ? */
3719 }
3720 
3721 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
3722 {
3723  uint32_t c = -1;
3724  int i, closed_gop = 0;
3725 
3726  for (i = 0; i < pkt->size - 4; i++) {
3727  c = (c << 8) + pkt->data[i];
3728  if (c == 0x1b8) { // gop
3729  closed_gop = pkt->data[i + 4] >> 6 & 0x01;
3730  } else if (c == 0x100) { // pic
3731  int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
3732  if (!temp_ref || closed_gop) // I picture is not reordered
3733  *flags = MOV_SYNC_SAMPLE;
3734  else
3735  *flags = MOV_PARTIAL_SYNC_SAMPLE;
3736  break;
3737  }
3738  }
3739  return 0;
3740 }
3741 
3742 static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
3743 {
3744  const uint8_t *start, *next, *end = pkt->data + pkt->size;
3745  int seq = 0, entry = 0;
3746  int key = pkt->flags & AV_PKT_FLAG_KEY;
3747  start = find_next_marker(pkt->data, end);
3748  for (next = start; next < end; start = next) {
3749  next = find_next_marker(start + 4, end);
3750  switch (AV_RB32(start)) {
3751  case VC1_CODE_SEQHDR:
3752  seq = 1;
3753  break;
3754  case VC1_CODE_ENTRYPOINT:
3755  entry = 1;
3756  break;
3757  case VC1_CODE_SLICE:
3758  trk->vc1_info.slices = 1;
3759  break;
3760  }
3761  }
3762  if (!trk->entry && !fragment) {
3763  /* First packet in first fragment */
3764  trk->vc1_info.first_packet_seq = seq;
3765  trk->vc1_info.first_packet_entry = entry;
3766  } else if ((seq && !trk->vc1_info.packet_seq) ||
3767  (entry && !trk->vc1_info.packet_entry)) {
3768  int i;
3769  for (i = 0; i < trk->entry; i++)
3770  trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
3771  trk->has_keyframes = 0;
3772  if (seq)
3773  trk->vc1_info.packet_seq = 1;
3774  if (entry)
3775  trk->vc1_info.packet_entry = 1;
3776  if (!fragment) {
3777  /* First fragment */
3778  if ((!seq || trk->vc1_info.first_packet_seq) &&
3779  (!entry || trk->vc1_info.first_packet_entry)) {
3780  /* First packet had the same headers as this one, readd the
3781  * sync sample flag. */
3782  trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
3783  trk->has_keyframes = 1;
3784  }
3785  }
3786  }
3787  if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
3788  key = seq && entry;
3789  else if (trk->vc1_info.packet_seq)
3790  key = seq;
3791  else if (trk->vc1_info.packet_entry)
3792  key = entry;
3793  if (key) {
3794  trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
3795  trk->has_keyframes++;
3796  }
3797 }
3798 
3800 {
3801  MOVMuxContext *mov = s->priv_data;
3802  int i, first_track = -1;
3803  int64_t mdat_size = 0;
3804 
3805  if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
3806  return 0;
3807 
3808  if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
3809  int64_t pos = avio_tell(s->pb);
3810  uint8_t *buf;
3811  int buf_size, moov_size;
3812 
3813  for (i = 0; i < mov->nb_streams; i++)
3814  if (!mov->tracks[i].entry)
3815  break;
3816  /* Don't write the initial moov unless all tracks have data */
3817  if (i < mov->nb_streams)
3818  return 0;
3819 
3820  moov_size = get_moov_size(s);
3821  for (i = 0; i < mov->nb_streams; i++)
3822  mov->tracks[i].data_offset = pos + moov_size + 8;
3823 
3824  mov_write_moov_tag(s->pb, mov, s);
3825 
3826  buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
3827  mov->mdat_buf = NULL;
3828  avio_wb32(s->pb, buf_size + 8);
3829  ffio_wfourcc(s->pb, "mdat");
3830  avio_write(s->pb, buf, buf_size);
3831  av_free(buf);
3832 
3833  mov->fragments++;
3834  mov->mdat_size = 0;
3835  for (i = 0; i < mov->nb_streams; i++) {
3836  if (mov->tracks[i].entry)
3837  mov->tracks[i].frag_start += mov->tracks[i].start_dts +
3838  mov->tracks[i].track_duration -
3839  mov->tracks[i].cluster[0].dts;
3840  mov->tracks[i].entry = 0;
3841  }
3842  avio_flush(s->pb);
3843  return 0;
3844  }
3845 
3846  for (i = 0; i < mov->nb_streams; i++) {
3847  MOVTrack *track = &mov->tracks[i];
3848  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
3849  track->data_offset = 0;
3850  else
3851  track->data_offset = mdat_size;
3852  if (!track->mdat_buf)
3853  continue;
3854  mdat_size += avio_tell(track->mdat_buf);
3855  if (first_track < 0)
3856  first_track = i;
3857  }
3858 
3859  if (!mdat_size)
3860  return 0;
3861 
3862  for (i = 0; i < mov->nb_streams; i++) {
3863  MOVTrack *track = &mov->tracks[i];
3864  int buf_size, write_moof = 1, moof_tracks = -1;
3865  uint8_t *buf;
3866  int64_t duration = 0;
3867 
3868  if (track->entry)
3869  duration = track->start_dts + track->track_duration -
3870  track->cluster[0].dts;
3871  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
3872  if (!track->mdat_buf)
3873  continue;
3874  mdat_size = avio_tell(track->mdat_buf);
3875  moof_tracks = i;
3876  } else {
3877  write_moof = i == first_track;
3878  }
3879 
3880  if (write_moof) {
3881  avio_flush(s->pb);
3882 
3883  mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
3884  mov->fragments++;
3885 
3886  avio_wb32(s->pb, mdat_size + 8);
3887  ffio_wfourcc(s->pb, "mdat");
3888  }
3889 
3890  if (track->entry)
3891  track->frag_start += duration;
3892  track->entry = 0;
3893  if (!track->mdat_buf)
3894  continue;
3895  buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
3896  track->mdat_buf = NULL;
3897 
3898  avio_write(s->pb, buf, buf_size);
3899  av_free(buf);
3900  }
3901 
3902  mov->mdat_size = 0;
3903 
3904  avio_flush(s->pb);
3905  return 0;
3906 }
3907 
3909 {
3910  MOVMuxContext *mov = s->priv_data;
3911  AVIOContext *pb = s->pb;
3912  MOVTrack *trk = &mov->tracks[pkt->stream_index];
3913  AVCodecContext *enc = trk->enc;
3914  unsigned int samples_in_chunk = 0;
3915  int size = pkt->size, ret = 0;
3916  uint8_t *reformatted_data = NULL;
3917 
3918  if (trk->entry) {
3919  int64_t duration = pkt->dts - trk->cluster[trk->entry - 1].dts;
3920  if (duration < 0 || duration > INT_MAX) {
3921  av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",
3922  duration, pkt->dts
3923  );
3924 
3925  pkt->dts = trk->cluster[trk->entry - 1].dts + 1;
3926  pkt->pts = AV_NOPTS_VALUE;
3927  }
3928  if (pkt->duration < 0) {
3929  av_log(s, AV_LOG_ERROR, "Application provided duration: %d is invalid\n", pkt->duration);
3930  return AVERROR(EINVAL);
3931  }
3932  }
3933  if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
3934  int ret;
3935  if (mov->fragments > 0) {
3936  if (!trk->mdat_buf) {
3937  if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
3938  return ret;
3939  }
3940  pb = trk->mdat_buf;
3941  } else {
3942  if (!mov->mdat_buf) {
3943  if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
3944  return ret;
3945  }
3946  pb = mov->mdat_buf;
3947  }
3948  }
3949 
3950  if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
3951  /* We must find out how many AMR blocks there are in one packet */
3952  static uint16_t packed_size[16] =
3953  {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
3954  int len = 0;
3955 
3956  while (len < size && samples_in_chunk < 100) {
3957  len += packed_size[(pkt->data[len] >> 3) & 0x0F];
3958  samples_in_chunk++;
3959  }
3960  if (samples_in_chunk > 1) {
3961  av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
3962  return -1;
3963  }
3964  } else if (enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
3966  samples_in_chunk = enc->frame_size;
3967  } else if (trk->sample_size)
3968  samples_in_chunk = size / trk->sample_size;
3969  else
3970  samples_in_chunk = 1;
3971 
3972  /* copy extradata if it exists */
3973  if (trk->vos_len == 0 && enc->extradata_size > 0 && !TAG_IS_AVCI(trk->tag)) {
3974  trk->vos_len = enc->extradata_size;
3975  trk->vos_data = av_malloc(trk->vos_len);
3976  memcpy(trk->vos_data, enc->extradata, trk->vos_len);
3977  }
3978 
3979  if (enc->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
3980  (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
3981  if (!s->streams[pkt->stream_index]->nb_frames) {
3982  av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
3983  "use the audio bitstream filter 'aac_adtstoasc' to fix it "
3984  "('-bsf:a aac_adtstoasc' option with ffmpeg)\n");
3985  return -1;
3986  }
3987  av_log(s, AV_LOG_WARNING, "aac bitstream error\n");
3988  }
3989  if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {
3990  /* from x264 or from bytestream h264 */
3991  /* nal reformating needed */
3992  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
3993  ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
3994  &size);
3995  avio_write(pb, reformatted_data, size);
3996  } else {
3997  size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
3998  }
3999  } else if (enc->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
4000  (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
4001  /* extradata is Annex B, assume the bitstream is too and convert it */
4002  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
4003  ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
4004  avio_write(pb, reformatted_data, size);
4005  } else {
4006  size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
4007  }
4008  } else if (enc->codec_id == AV_CODEC_ID_EAC3) {
4009  size = handle_eac3(mov, pkt, trk);
4010  if (size < 0)
4011  return size;
4012  else if (!size)
4013  goto end;
4014  avio_write(pb, pkt->data, size);
4015  } else {
4016  avio_write(pb, pkt->data, size);
4017  }
4018 
4019  if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
4020  enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
4021  /* copy frame to create needed atoms */
4022  trk->vos_len = size;
4023  trk->vos_data = av_malloc(size);
4024  if (!trk->vos_data) {
4025  ret = AVERROR(ENOMEM);
4026  goto err;
4027  }
4028  memcpy(trk->vos_data, pkt->data, size);
4029  }
4030 
4031  if (trk->entry >= trk->cluster_capacity) {
4032  unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
4033  if (av_reallocp_array(&trk->cluster, new_capacity,
4034  sizeof(*trk->cluster))) {
4035  ret = AVERROR(ENOMEM);
4036  goto err;
4037  }
4038  trk->cluster_capacity = new_capacity;
4039  }
4040 
4041  trk->cluster[trk->entry].pos = avio_tell(pb) - size;
4042  trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
4043  trk->cluster[trk->entry].chunkNum = 0;
4044  trk->cluster[trk->entry].size = size;
4045  trk->cluster[trk->entry].entries = samples_in_chunk;
4046  trk->cluster[trk->entry].dts = pkt->dts;
4047  if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
4048  if (!trk->frag_discont) {
4049  /* First packet of a new fragment. We already wrote the duration
4050  * of the last packet of the previous fragment based on track_duration,
4051  * which might not exactly match our dts. Therefore adjust the dts
4052  * of this packet to be what the previous packets duration implies. */
4053  trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
4054  } else {
4055  /* New fragment, but discontinuous from previous fragments.
4056  * Pretend the duration sum of the earlier fragments is
4057  * pkt->dts - trk->start_dts. */
4058  trk->frag_start = pkt->dts - trk->start_dts;
4059  trk->frag_discont = 0;
4060  }
4061  }
4062 
4063  if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
4065  /* Not using edit lists and shifting the first track to start from zero.
4066  * If the other streams start from a later timestamp, we won't be able
4067  * to signal the difference in starting time without an edit list.
4068  * Thus move the timestamp for this first sample to 0, increasing
4069  * its duration instead. */
4070  trk->cluster[trk->entry].dts = trk->start_dts = 0;
4071  }
4072  if (trk->start_dts == AV_NOPTS_VALUE) {
4073  trk->start_dts = pkt->dts;
4074  if (trk->frag_discont) {
4075  /* Pretend the whole stream started at dts=0, with earlier framgents
4076  * already written, with a duration summing up to pkt->dts. */
4077  trk->frag_start = pkt->dts;
4078  trk->start_dts = 0;
4079  trk->frag_discont = 0;
4080  } else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
4082  "Track %d starts with a nonzero dts %"PRId64". This "
4083  "currently isn't handled correctly in combination with "
4084  "empty_moov.\n", pkt->stream_index, pkt->dts);
4085  }
4086  trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
4087  trk->last_sample_is_subtitle_end = 0;
4088 
4089  if (pkt->pts == AV_NOPTS_VALUE) {
4090  av_log(s, AV_LOG_WARNING, "pts has no value\n");
4091  pkt->pts = pkt->dts;
4092  }
4093  if (pkt->dts != pkt->pts)
4094  trk->flags |= MOV_TRACK_CTTS;
4095  trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
4096  trk->cluster[trk->entry].flags = 0;
4097  if (enc->codec_id == AV_CODEC_ID_VC1) {
4098  mov_parse_vc1_frame(pkt, trk, mov->fragments);
4099  } else if (pkt->flags & AV_PKT_FLAG_KEY) {
4100  if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
4101  trk->entry > 0) { // force sync sample for the first key frame
4102  mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
4103  if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
4104  trk->flags |= MOV_TRACK_STPS;
4105  } else {
4106  trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
4107  }
4108  if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
4109  trk->has_keyframes++;
4110  }
4111  trk->entry++;
4112  trk->sample_count += samples_in_chunk;
4113  mov->mdat_size += size;
4114 
4115  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
4116  ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
4117  reformatted_data, size);
4118 
4119 end:
4120 err:
4121 
4122  av_free(reformatted_data);
4123  return ret;
4124 }
4125 
4127 {
4128  MOVMuxContext *mov = s->priv_data;
4129  MOVTrack *trk = &mov->tracks[pkt->stream_index];
4130  AVCodecContext *enc = trk->enc;
4131  int64_t frag_duration = 0;
4132  int size = pkt->size;
4133 
4134  if (!pkt->size)
4135  return 0; /* Discard 0 sized packets */
4136 
4137  if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
4138  int i;
4139  for (i = 0; i < s->nb_streams; i++)
4140  mov->tracks[i].frag_discont = 1;
4142  }
4143 
4144  if (trk->entry && pkt->stream_index < s->nb_streams)
4145  frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
4146  s->streams[pkt->stream_index]->time_base,
4147  AV_TIME_BASE_Q);
4148  if ((mov->max_fragment_duration &&
4149  frag_duration >= mov->max_fragment_duration) ||
4150  (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
4151  (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
4152  enc->codec_type == AVMEDIA_TYPE_VIDEO &&
4153  trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
4154  if (frag_duration >= mov->min_fragment_duration)
4155  mov_flush_fragment(s);
4156  }
4157 
4158  return ff_mov_write_packet(s, pkt);
4159 }
4160 
4162  int stream_index,
4163  int64_t dts) {
4164  AVPacket end;
4165  uint8_t data[2] = {0};
4166  int ret;
4167 
4168  av_init_packet(&end);
4169  end.size = sizeof(data);
4170  end.data = data;
4171  end.pts = dts;
4172  end.dts = dts;
4173  end.duration = 0;
4174  end.stream_index = stream_index;
4175 
4176  ret = mov_write_single_packet(s, &end);
4177  av_free_packet(&end);
4178 
4179  return ret;
4180 }
4181 
4183 {
4184  if (!pkt) {
4185  mov_flush_fragment(s);
4186  return 1;
4187  } else {
4188  int i;
4189  MOVMuxContext *mov = s->priv_data;
4190 
4191  if (!pkt->size) return 0; /* Discard 0 sized packets */
4192 
4193  /*
4194  * Subtitles require special handling.
4195  *
4196  * 1) For full complaince, every track must have a sample at
4197  * dts == 0, which is rarely true for subtitles. So, as soon
4198  * as we see any packet with dts > 0, write an empty subtitle
4199  * at dts == 0 for any subtitle track with no samples in it.
4200  *
4201  * 2) For each subtitle track, check if the current packet's
4202  * dts is past the duration of the last subtitle sample. If
4203  * so, we now need to write an end sample for that subtitle.
4204  *
4205  * This must be done conditionally to allow for subtitles that
4206  * immediately replace each other, in which case an end sample
4207  * is not needed, and is, in fact, actively harmful.
4208  *
4209  * 3) See mov_write_trailer for how the final end sample is
4210  * handled.
4211  */
4212  for (i = 0; i < mov->nb_streams; i++) {
4213  MOVTrack *trk = &mov->tracks[i];
4214  int ret;
4215 
4216  if (trk->enc->codec_id == AV_CODEC_ID_MOV_TEXT &&
4217  trk->track_duration < pkt->dts &&
4218  (trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {
4220  if (ret < 0) return ret;
4221  trk->last_sample_is_subtitle_end = 1;
4222  }
4223  }
4224 
4225  return mov_write_single_packet(s, pkt);
4226  }
4227 }
4228 
4229 // QuickTime chapters involve an additional text track with the chapter names
4230 // as samples, and a tref pointing from the other tracks to the chapter one.
4231 static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
4232 {
4233  AVIOContext *pb;
4234 
4235  MOVMuxContext *mov = s->priv_data;
4236  MOVTrack *track = &mov->tracks[tracknum];
4237  AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
4238  int i, len;
4239 
4240  track->mode = mov->mode;
4241  track->tag = MKTAG('t','e','x','t');
4242  track->timescale = MOV_TIMESCALE;
4243  track->enc = avcodec_alloc_context3(NULL);
4244  if (!track->enc)
4245  return AVERROR(ENOMEM);
4247 #if 0
4248  // These properties are required to make QT recognize the chapter track
4249  uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
4250  if (ff_alloc_extradata(track->enc, sizeof(chapter_properties)))
4251  return AVERROR(ENOMEM);
4252  memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
4253 #else
4254  if (avio_open_dyn_buf(&pb) >= 0) {
4255  int size;
4256  uint8_t *buf;
4257 
4258  /* Stub header (usually for Quicktime chapter track) */
4259  // TextSampleEntry
4260  avio_wb32(pb, 0x01); // displayFlags
4261  avio_w8(pb, 0x00); // horizontal justification