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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 (not supported by QuickTime)", 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  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
67  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
68  { "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},
69  { "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},
70  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
71  { "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},
72  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
73  { "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},
74  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
75  { "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},
76  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
77  { NULL },
78 };
79 
80 #define MOV_CLASS(flavor)\
81 static const AVClass flavor ## _muxer_class = {\
82  .class_name = #flavor " muxer",\
83  .item_name = av_default_item_name,\
84  .option = options,\
85  .version = LIBAVUTIL_VERSION_INT,\
86 };
87 
88 static int get_moov_size(AVFormatContext *s);
89 
90 static int utf8len(const uint8_t *b)
91 {
92  int len = 0;
93  int val;
94  while (*b) {
95  GET_UTF8(val, *b++, return -1;)
96  len++;
97  }
98  return len;
99 }
100 
101 //FIXME support 64 bit variant with wide placeholders
102 static int64_t update_size(AVIOContext *pb, int64_t pos)
103 {
104  int64_t curpos = avio_tell(pb);
105  avio_seek(pb, pos, SEEK_SET);
106  avio_wb32(pb, curpos - pos); /* rewrite size */
107  avio_seek(pb, curpos, SEEK_SET);
108 
109  return curpos - pos;
110 }
111 
112 static int supports_edts(MOVMuxContext *mov)
113 {
114  // EDTS with fragments is tricky as we don't know the duration when its written
115  // also we might end up having to write the EDTS before the first packet, which would fail
116  return (mov->use_editlist<0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) || mov->use_editlist>0;
117 }
118 
119 static int co64_required(const MOVTrack *track)
120 {
121  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
122  return 1;
123  return 0;
124 }
125 
126 /* Chunk offset atom */
127 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
128 {
129  int i;
130  int mode64 = co64_required(track); // use 32 bit size variant if possible
131  int64_t pos = avio_tell(pb);
132  avio_wb32(pb, 0); /* size */
133  if (mode64)
134  ffio_wfourcc(pb, "co64");
135  else
136  ffio_wfourcc(pb, "stco");
137  avio_wb32(pb, 0); /* version & flags */
138  avio_wb32(pb, track->chunkCount); /* entry count */
139  for (i = 0; i < track->entry; i++) {
140  if (!track->cluster[i].chunkNum)
141  continue;
142  if (mode64 == 1)
143  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
144  else
145  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
146  }
147  return update_size(pb, pos);
148 }
149 
150 /* Sample size atom */
151 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
152 {
153  int equalChunks = 1;
154  int i, j, entries = 0, tst = -1, oldtst = -1;
155 
156  int64_t pos = avio_tell(pb);
157  avio_wb32(pb, 0); /* size */
158  ffio_wfourcc(pb, "stsz");
159  avio_wb32(pb, 0); /* version & flags */
160 
161  for (i = 0; i < track->entry; i++) {
162  tst = track->cluster[i].size / track->cluster[i].entries;
163  if (oldtst != -1 && tst != oldtst)
164  equalChunks = 0;
165  oldtst = tst;
166  entries += track->cluster[i].entries;
167  }
168  if (equalChunks && track->entry) {
169  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
170  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
171  avio_wb32(pb, sSize); // sample size
172  avio_wb32(pb, entries); // sample count
173  } else {
174  avio_wb32(pb, 0); // sample size
175  avio_wb32(pb, entries); // sample count
176  for (i = 0; i < track->entry; i++) {
177  for (j = 0; j < track->cluster[i].entries; j++) {
178  avio_wb32(pb, track->cluster[i].size /
179  track->cluster[i].entries);
180  }
181  }
182  }
183  return update_size(pb, pos);
184 }
185 
186 /* Sample to chunk atom */
187 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
188 {
189  int index = 0, oldval = -1, i;
190  int64_t entryPos, curpos;
191 
192  int64_t pos = avio_tell(pb);
193  avio_wb32(pb, 0); /* size */
194  ffio_wfourcc(pb, "stsc");
195  avio_wb32(pb, 0); // version & flags
196  entryPos = avio_tell(pb);
197  avio_wb32(pb, track->chunkCount); // entry count
198  for (i = 0; i < track->entry; i++) {
199  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
200  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
201  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
202  avio_wb32(pb, 0x1); // sample description index
203  oldval = track->cluster[i].samples_in_chunk;
204  index++;
205  }
206  }
207  curpos = avio_tell(pb);
208  avio_seek(pb, entryPos, SEEK_SET);
209  avio_wb32(pb, index); // rewrite size
210  avio_seek(pb, curpos, SEEK_SET);
211 
212  return update_size(pb, pos);
213 }
214 
215 /* Sync sample atom */
216 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
217 {
218  int64_t curpos, entryPos;
219  int i, index = 0;
220  int64_t pos = avio_tell(pb);
221  avio_wb32(pb, 0); // size
222  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
223  avio_wb32(pb, 0); // version & flags
224  entryPos = avio_tell(pb);
225  avio_wb32(pb, track->entry); // entry count
226  for (i = 0; i < track->entry; i++) {
227  if (track->cluster[i].flags & flag) {
228  avio_wb32(pb, i + 1);
229  index++;
230  }
231  }
232  curpos = avio_tell(pb);
233  avio_seek(pb, entryPos, SEEK_SET);
234  avio_wb32(pb, index); // rewrite size
235  avio_seek(pb, curpos, SEEK_SET);
236  return update_size(pb, pos);
237 }
238 
239 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
240 {
241  avio_wb32(pb, 0x11); /* size */
242  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
243  else ffio_wfourcc(pb, "damr");
244  ffio_wfourcc(pb, "FFMP");
245  avio_w8(pb, 0); /* decoder version */
246 
247  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
248  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
249  avio_w8(pb, 0x01); /* Frames per sample */
250  return 0x11;
251 }
252 
253 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
254 {
255  GetBitContext gbc;
256  PutBitContext pbc;
257  uint8_t buf[3];
258  int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
259 
260  if (track->vos_len < 7)
261  return -1;
262 
263  avio_wb32(pb, 11);
264  ffio_wfourcc(pb, "dac3");
265 
266  init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
267  fscod = get_bits(&gbc, 2);
268  frmsizecod = get_bits(&gbc, 6);
269  bsid = get_bits(&gbc, 5);
270  bsmod = get_bits(&gbc, 3);
271  acmod = get_bits(&gbc, 3);
272  if (acmod == 2) {
273  skip_bits(&gbc, 2); // dsurmod
274  } else {
275  if ((acmod & 1) && acmod != 1)
276  skip_bits(&gbc, 2); // cmixlev
277  if (acmod & 4)
278  skip_bits(&gbc, 2); // surmixlev
279  }
280  lfeon = get_bits1(&gbc);
281 
282  init_put_bits(&pbc, buf, sizeof(buf));
283  put_bits(&pbc, 2, fscod);
284  put_bits(&pbc, 5, bsid);
285  put_bits(&pbc, 3, bsmod);
286  put_bits(&pbc, 3, acmod);
287  put_bits(&pbc, 1, lfeon);
288  put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
289  put_bits(&pbc, 5, 0); // reserved
290 
291  flush_put_bits(&pbc);
292  avio_write(pb, buf, sizeof(buf));
293 
294  return 11;
295 }
296 
297 struct eac3_info {
301 
302  /* Layout of the EC3SpecificBox */
303  /* maximum bitrate */
304  uint16_t data_rate;
305  /* number of independent substreams */
307  struct {
308  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
310  /* bit stream identification 5 bits */
312  /* one bit reserved */
313  /* audio service mixing (not supported yet) 1 bit */
314  /* bit stream mode 3 bits */
316  /* audio coding mode 3 bits */
318  /* sub woofer on 1 bit */
320  /* 3 bits reserved */
321  /* number of dependent substreams associated with this substream 4 bits */
323  /* channel locations of the dependent substream(s), if any, 9 bits */
324  uint16_t chan_loc;
325  /* if there is no dependent substream, then one bit reserved instead */
326  } substream[1]; /* TODO: support 8 independent substreams */
327 };
328 
329 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
330 {
331  GetBitContext gbc;
332  AC3HeaderInfo tmp, *hdr = &tmp;
333  struct eac3_info *info;
334  int num_blocks;
335 
336  if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
337  return AVERROR(ENOMEM);
338  info = track->eac3_priv;
339 
340  init_get_bits(&gbc, pkt->data, pkt->size * 8);
341  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0) {
342  /* drop the packets until we see a good one */
343  if (!track->entry) {
344  av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
345  return 0;
346  }
347  return AVERROR_INVALIDDATA;
348  }
349 
350  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
351  num_blocks = hdr->num_blocks;
352 
353  if (!info->ec3_done) {
354  /* AC-3 substream must be the first one */
355  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)
356  return AVERROR(EINVAL);
357 
358  /* this should always be the case, given that our AC-3 parser
359  * concatenates dependent frames to their independent parent */
361  /* substream ids must be incremental */
362  if (hdr->substreamid > info->num_ind_sub + 1)
363  return AVERROR(EINVAL);
364 
365  if (hdr->substreamid == info->num_ind_sub + 1) {
366  //info->num_ind_sub++;
367  avpriv_request_sample(track->enc, "Multiple independent substreams");
368  return AVERROR_PATCHWELCOME;
369  } else if (hdr->substreamid < info->num_ind_sub ||
370  hdr->substreamid == 0 && info->substream[0].bsid) {
371  info->ec3_done = 1;
372  goto concatenate;
373  }
374  }
375 
376  /* fill the info needed for the "dec3" atom */
377  info->substream[hdr->substreamid].fscod = hdr->sr_code;
378  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
379  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
380  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
381  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
382 
383  /* Parse dependent substream(s), if any */
384  if (pkt->size != hdr->frame_size) {
385  int cumul_size = hdr->frame_size;
386  int parent = hdr->substreamid;
387 
388  while (cumul_size != pkt->size) {
389  int i;
390  init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);
391  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0)
392  return AVERROR_INVALIDDATA;
394  return AVERROR(EINVAL);
395  cumul_size += hdr->frame_size;
396  info->substream[parent].num_dep_sub++;
397 
398  /* header is parsed up to lfeon, but custom channel map may be needed */
399  /* skip bsid */
400  skip_bits(&gbc, 5);
401  /* skip volume control params */
402  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
403  skip_bits(&gbc, 5); // skip dialog normalization
404  if (get_bits1(&gbc)) {
405  skip_bits(&gbc, 8); // skip compression gain word
406  }
407  }
408  /* get the dependent stream channel map, if exists */
409  if (get_bits1(&gbc))
410  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
411  else
412  info->substream[parent].chan_loc |= hdr->channel_mode;
413  }
414  }
415  }
416 
417 concatenate:
418  if (!info->num_blocks && num_blocks == 6)
419  return pkt->size;
420  else if (info->num_blocks + num_blocks > 6)
421  return AVERROR_INVALIDDATA;
422 
423  if (!info->num_blocks) {
424  int ret;
425  if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)
426  return ret;
427  info->num_blocks = num_blocks;
428  return 0;
429  } else {
430  int ret;
431  if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
432  return ret;
433  memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
434  info->num_blocks += num_blocks;
435  info->pkt.duration += pkt->duration;
436  if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
437  return ret;
438  if (info->num_blocks != 6)
439  return 0;
440  av_free_packet(pkt);
441  if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)
442  return ret;
443  av_free_packet(&info->pkt);
444  info->num_blocks = 0;
445  }
446 
447  return pkt->size;
448 }
449 
450 static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)
451 {
452  PutBitContext pbc;
453  uint8_t *buf;
454  struct eac3_info *info;
455  int size, i;
456 
457  if (!track->eac3_priv)
458  return AVERROR(EINVAL);
459 
460  info = track->eac3_priv;
461  size = 2 + 4 * (info->num_ind_sub + 1);
462  buf = av_malloc(size);
463  if (!buf) {
464  size = AVERROR(ENOMEM);
465  goto end;
466  }
467 
468  init_put_bits(&pbc, buf, size);
469  put_bits(&pbc, 13, info->data_rate);
470  put_bits(&pbc, 3, info->num_ind_sub);
471  for (i = 0; i <= info->num_ind_sub; i++) {
472  put_bits(&pbc, 2, info->substream[i].fscod);
473  put_bits(&pbc, 5, info->substream[i].bsid);
474  put_bits(&pbc, 1, 0); /* reserved */
475  put_bits(&pbc, 1, 0); /* asvc */
476  put_bits(&pbc, 3, info->substream[i].bsmod);
477  put_bits(&pbc, 3, info->substream[i].acmod);
478  put_bits(&pbc, 1, info->substream[i].lfeon);
479  put_bits(&pbc, 5, 0); /* reserved */
480  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
481  if (!info->substream[i].num_dep_sub) {
482  put_bits(&pbc, 1, 0); /* reserved */
483  size--;
484  } else {
485  put_bits(&pbc, 9, info->substream[i].chan_loc);
486  }
487  }
488  flush_put_bits(&pbc);
489 
490  avio_wb32(pb, size + 8);
491  ffio_wfourcc(pb, "dec3");
492  avio_write(pb, buf, size);
493 
494  av_free(buf);
495 
496 end:
497  av_free_packet(&info->pkt);
498  av_freep(&track->eac3_priv);
499 
500  return size;
501 }
502 
503 /**
504  * This function writes extradata "as is".
505  * Extradata must be formatted like a valid atom (with size and tag).
506  */
508 {
509  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
510  return track->enc->extradata_size;
511 }
512 
514 {
515  avio_wb32(pb, 10);
516  ffio_wfourcc(pb, "enda");
517  avio_wb16(pb, 1); /* little endian */
518  return 10;
519 }
520 
522 {
523  avio_wb32(pb, 10);
524  ffio_wfourcc(pb, "enda");
525  avio_wb16(pb, 0); /* big endian */
526  return 10;
527 }
528 
529 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
530 {
531  int i = 3;
532  avio_w8(pb, tag);
533  for (; i > 0; i--)
534  avio_w8(pb, (size >> (7 * i)) | 0x80);
535  avio_w8(pb, size & 0x7F);
536 }
537 
538 static unsigned compute_avg_bitrate(MOVTrack *track)
539 {
540  uint64_t size = 0;
541  int i;
542  if (!track->track_duration)
543  return 0;
544  for (i = 0; i < track->entry; i++)
545  size += track->cluster[i].size;
546  return size * 8 * track->timescale / track->track_duration;
547 }
548 
549 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
550 {
551  int64_t pos = avio_tell(pb);
552  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
553  unsigned avg_bitrate;
554 
555  avio_wb32(pb, 0); // size
556  ffio_wfourcc(pb, "esds");
557  avio_wb32(pb, 0); // Version
558 
559  // ES descriptor
560  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
561  avio_wb16(pb, track->track_id);
562  avio_w8(pb, 0x00); // flags (= no flags)
563 
564  // DecoderConfig descriptor
565  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
566 
567  // Object type indication
568  if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
569  track->enc->codec_id == AV_CODEC_ID_MP3) &&
570  track->enc->sample_rate > 24000)
571  avio_w8(pb, 0x6B); // 11172-3
572  else
574 
575  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
576  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
577  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
578  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
579  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
580  avio_w8(pb, 0x15); // flags (= Audiostream)
581  else
582  avio_w8(pb, 0x11); // flags (= Visualstream)
583 
584  avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
585 
586  avg_bitrate = compute_avg_bitrate(track);
587  // maxbitrate (FIXME should be max rate in any 1 sec window)
588  avio_wb32(pb, FFMAX3(track->enc->bit_rate, track->enc->rc_max_rate, avg_bitrate));
589  avio_wb32(pb, avg_bitrate);
590 
591  if (track->vos_len) {
592  // DecoderSpecific info descriptor
593  put_descr(pb, 0x05, track->vos_len);
594  avio_write(pb, track->vos_data, track->vos_len);
595  }
596 
597  // SL descriptor
598  put_descr(pb, 0x06, 1);
599  avio_w8(pb, 0x02);
600  return update_size(pb, pos);
601 }
602 
604 {
605  return codec_id == AV_CODEC_ID_PCM_S24LE ||
606  codec_id == AV_CODEC_ID_PCM_S32LE ||
607  codec_id == AV_CODEC_ID_PCM_F32LE ||
608  codec_id == AV_CODEC_ID_PCM_F64LE;
609 }
610 
612 {
613  return codec_id == AV_CODEC_ID_PCM_S24BE ||
614  codec_id == AV_CODEC_ID_PCM_S32BE ||
615  codec_id == AV_CODEC_ID_PCM_F32BE ||
616  codec_id == AV_CODEC_ID_PCM_F64BE;
617 }
618 
619 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
620 {
621  int ret;
622  int64_t pos = avio_tell(pb);
623  avio_wb32(pb, 0);
624  avio_wl32(pb, track->tag); // store it byteswapped
625  track->enc->codec_tag = av_bswap16(track->tag >> 16);
626  if ((ret = ff_put_wav_header(pb, track->enc, 0)) < 0)
627  return ret;
628  return update_size(pb, pos);
629 }
630 
631 static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
632 {
633  int ret;
634  int64_t pos = avio_tell(pb);
635  avio_wb32(pb, 0);
636  ffio_wfourcc(pb, "wfex");
637  if ((ret = ff_put_wav_header(pb, track->enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
638  return ret;
639  return update_size(pb, pos);
640 }
641 
642 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
643 {
644  uint32_t layout_tag, bitmap;
645  int64_t pos = avio_tell(pb);
646 
647  layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
648  track->enc->channel_layout,
649  &bitmap);
650  if (!layout_tag) {
651  av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
652  "lack of channel information\n");
653  return 0;
654  }
655 
656  if (track->multichannel_as_mono)
657  return 0;
658 
659  avio_wb32(pb, 0); // Size
660  ffio_wfourcc(pb, "chan"); // Type
661  avio_w8(pb, 0); // Version
662  avio_wb24(pb, 0); // Flags
663  avio_wb32(pb, layout_tag); // mChannelLayoutTag
664  avio_wb32(pb, bitmap); // mChannelBitmap
665  avio_wb32(pb, 0); // mNumberChannelDescriptions
666 
667  return update_size(pb, pos);
668 }
669 
670 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
671 {
672  int64_t pos = avio_tell(pb);
673 
674  avio_wb32(pb, 0); /* size */
675  ffio_wfourcc(pb, "wave");
676 
677  if (track->enc->codec_id != AV_CODEC_ID_QDM2) {
678  avio_wb32(pb, 12); /* size */
679  ffio_wfourcc(pb, "frma");
680  avio_wl32(pb, track->tag);
681  }
682 
683  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
684  /* useless atom needed by mplayer, ipod, not needed by quicktime */
685  avio_wb32(pb, 12); /* size */
686  ffio_wfourcc(pb, "mp4a");
687  avio_wb32(pb, 0);
688  mov_write_esds_tag(pb, track);
689  } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
690  mov_write_enda_tag(pb);
691  } else if (mov_pcm_be_gt16(track->enc->codec_id)) {
693  } else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
694  mov_write_amr_tag(pb, track);
695  } else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
696  mov_write_ac3_tag(pb, track);
697  } else if (track->enc->codec_id == AV_CODEC_ID_EAC3) {
698  mov_write_eac3_tag(pb, track);
699  } else if (track->enc->codec_id == AV_CODEC_ID_ALAC ||
700  track->enc->codec_id == AV_CODEC_ID_QDM2) {
701  mov_write_extradata_tag(pb, track);
702  } else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
704  mov_write_ms_tag(pb, track);
705  }
706 
707  avio_wb32(pb, 8); /* size */
708  avio_wb32(pb, 0); /* null tag */
709 
710  return update_size(pb, pos);
711 }
712 
714 {
715  uint8_t *unescaped;
716  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
717  int unescaped_size, seq_found = 0;
718  int level = 0, interlace = 0;
719  int packet_seq = track->vc1_info.packet_seq;
720  int packet_entry = track->vc1_info.packet_entry;
721  int slices = track->vc1_info.slices;
722  PutBitContext pbc;
723 
724  if (track->start_dts == AV_NOPTS_VALUE) {
725  /* No packets written yet, vc1_info isn't authoritative yet. */
726  /* Assume inline sequence and entry headers. This will be
727  * overwritten at the end if the file is seekable. */
728  packet_seq = packet_entry = 1;
729  }
730 
731  unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
732  if (!unescaped)
733  return AVERROR(ENOMEM);
734  start = find_next_marker(track->vos_data, end);
735  for (next = start; next < end; start = next) {
736  GetBitContext gb;
737  int size;
738  next = find_next_marker(start + 4, end);
739  size = next - start - 4;
740  if (size <= 0)
741  continue;
742  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
743  init_get_bits(&gb, unescaped, 8 * unescaped_size);
744  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
745  int profile = get_bits(&gb, 2);
746  if (profile != PROFILE_ADVANCED) {
747  av_free(unescaped);
748  return AVERROR(ENOSYS);
749  }
750  seq_found = 1;
751  level = get_bits(&gb, 3);
752  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
753  * width, height */
754  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
755  skip_bits(&gb, 1); /* broadcast */
756  interlace = get_bits1(&gb);
757  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
758  }
759  }
760  if (!seq_found) {
761  av_free(unescaped);
762  return AVERROR(ENOSYS);
763  }
764 
765  init_put_bits(&pbc, buf, 7);
766  /* VC1DecSpecStruc */
767  put_bits(&pbc, 4, 12); /* profile - advanced */
768  put_bits(&pbc, 3, level);
769  put_bits(&pbc, 1, 0); /* reserved */
770  /* VC1AdvDecSpecStruc */
771  put_bits(&pbc, 3, level);
772  put_bits(&pbc, 1, 0); /* cbr */
773  put_bits(&pbc, 6, 0); /* reserved */
774  put_bits(&pbc, 1, !interlace); /* no interlace */
775  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
776  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
777  put_bits(&pbc, 1, !slices); /* no slice code */
778  put_bits(&pbc, 1, 0); /* no bframe */
779  put_bits(&pbc, 1, 0); /* reserved */
780 
781  /* framerate */
782  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
783  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
784  else
785  put_bits32(&pbc, 0xffffffff);
786 
787  flush_put_bits(&pbc);
788 
789  av_free(unescaped);
790 
791  return 0;
792 }
793 
794 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
795 {
796  uint8_t buf[7] = { 0 };
797  int ret;
798 
799  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
800  return ret;
801 
802  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
803  ffio_wfourcc(pb, "dvc1");
804  track->vc1_info.struct_offset = avio_tell(pb);
805  avio_write(pb, buf, sizeof(buf));
806  avio_write(pb, track->vos_data, track->vos_len);
807 
808  return 0;
809 }
810 
811 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
812 {
813  avio_wb32(pb, track->vos_len + 8);
814  ffio_wfourcc(pb, "glbl");
815  avio_write(pb, track->vos_data, track->vos_len);
816  return 8 + track->vos_len;
817 }
818 
819 /**
820  * Compute flags for 'lpcm' tag.
821  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
822  */
824 {
825  switch (codec_id) {
828  return 11;
831  return 9;
832  case AV_CODEC_ID_PCM_U8:
833  return 10;
837  return 14;
838  case AV_CODEC_ID_PCM_S8:
842  return 12;
843  default:
844  return 0;
845  }
846 }
847 
848 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
849 {
850  int64_t next_dts;
851 
852  if (cluster_idx >= track->entry)
853  return 0;
854 
855  if (cluster_idx + 1 == track->entry)
856  next_dts = track->track_duration + track->start_dts;
857  else
858  next_dts = track->cluster[cluster_idx + 1].dts;
859 
860  next_dts -= track->cluster[cluster_idx].dts;
861 
862  av_assert0(next_dts >= 0);
863  av_assert0(next_dts <= INT_MAX);
864 
865  return next_dts;
866 }
867 
869 {
870  int i, first_duration;
871 
872 // return track->enc->frame_size;
873 
874  /* use 1 for raw PCM */
875  if (!track->audio_vbr)
876  return 1;
877 
878  /* check to see if duration is constant for all clusters */
879  if (!track->entry)
880  return 0;
881  first_duration = get_cluster_duration(track, 0);
882  for (i = 1; i < track->entry; i++) {
883  if (get_cluster_duration(track, i) != first_duration)
884  return 0;
885  }
886  return first_duration;
887 }
888 
889 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
890 {
891  int64_t pos = avio_tell(pb);
892  int version = 0;
893  uint32_t tag = track->tag;
894 
895  if (track->mode == MODE_MOV) {
896  if (track->timescale > UINT16_MAX) {
897  if (mov_get_lpcm_flags(track->enc->codec_id))
898  tag = AV_RL32("lpcm");
899  version = 2;
900  } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
901  mov_pcm_be_gt16(track->enc->codec_id) ||
902  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
904  track->enc->codec_id == AV_CODEC_ID_QDM2) {
905  version = 1;
906  }
907  }
908 
909  avio_wb32(pb, 0); /* size */
910  avio_wl32(pb, tag); // store it byteswapped
911  avio_wb32(pb, 0); /* Reserved */
912  avio_wb16(pb, 0); /* Reserved */
913  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
914 
915  /* SoundDescription */
916  avio_wb16(pb, version); /* Version */
917  avio_wb16(pb, 0); /* Revision level */
918  avio_wb32(pb, 0); /* Reserved */
919 
920  if (version == 2) {
921  avio_wb16(pb, 3);
922  avio_wb16(pb, 16);
923  avio_wb16(pb, 0xfffe);
924  avio_wb16(pb, 0);
925  avio_wb32(pb, 0x00010000);
926  avio_wb32(pb, 72);
927  avio_wb64(pb, av_double2int(track->enc->sample_rate));
928  avio_wb32(pb, track->enc->channels);
929  avio_wb32(pb, 0x7F000000);
932  avio_wb32(pb, track->sample_size);
933  avio_wb32(pb, get_samples_per_packet(track));
934  } else {
935  if (track->mode == MODE_MOV) {
936  avio_wb16(pb, track->enc->channels);
937  if (track->enc->codec_id == AV_CODEC_ID_PCM_U8 ||
938  track->enc->codec_id == AV_CODEC_ID_PCM_S8)
939  avio_wb16(pb, 8); /* bits per sample */
940  else
941  avio_wb16(pb, 16);
942  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
943  } else { /* reserved for mp4/3gp */
944  avio_wb16(pb, 2);
945  avio_wb16(pb, 16);
946  avio_wb16(pb, 0);
947  }
948 
949  avio_wb16(pb, 0); /* packet size (= 0) */
950  avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
951  track->enc->sample_rate : 0);
952  avio_wb16(pb, 0); /* Reserved */
953  }
954 
955  if (version == 1) { /* SoundDescription V1 extended info */
956  if (mov_pcm_le_gt16(track->enc->codec_id) ||
957  mov_pcm_be_gt16(track->enc->codec_id))
958  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
959  else
960  avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
961  avio_wb32(pb, track->sample_size / track->enc->channels); /* Bytes per packet */
962  avio_wb32(pb, track->sample_size); /* Bytes per frame */
963  avio_wb32(pb, 2); /* Bytes per sample */
964  }
965 
966  if (track->mode == MODE_MOV &&
967  (track->enc->codec_id == AV_CODEC_ID_AAC ||
968  track->enc->codec_id == AV_CODEC_ID_AC3 ||
969  track->enc->codec_id == AV_CODEC_ID_EAC3 ||
970  track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
971  track->enc->codec_id == AV_CODEC_ID_ALAC ||
972  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
974  track->enc->codec_id == AV_CODEC_ID_QDM2 ||
975  (mov_pcm_le_gt16(track->enc->codec_id) && version==1) ||
976  (mov_pcm_be_gt16(track->enc->codec_id) && version==1)))
977  mov_write_wave_tag(pb, track);
978  else if (track->tag == MKTAG('m','p','4','a'))
979  mov_write_esds_tag(pb, track);
980  else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
981  mov_write_amr_tag(pb, track);
982  else if (track->enc->codec_id == AV_CODEC_ID_AC3)
983  mov_write_ac3_tag(pb, track);
984  else if (track->enc->codec_id == AV_CODEC_ID_EAC3)
985  mov_write_eac3_tag(pb, track);
986  else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
987  mov_write_extradata_tag(pb, track);
988  else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
989  mov_write_wfex_tag(pb, track);
990  else if (track->vos_len > 0)
991  mov_write_glbl_tag(pb, track);
992 
993  if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
994  mov_write_chan_tag(pb, track);
995 
996  return update_size(pb, pos);
997 }
998 
1000 {
1001  avio_wb32(pb, 0xf); /* size */
1002  ffio_wfourcc(pb, "d263");
1003  ffio_wfourcc(pb, "FFMP");
1004  avio_w8(pb, 0); /* decoder version */
1005  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1006  avio_w8(pb, 0xa); /* level */
1007  avio_w8(pb, 0); /* profile */
1008  return 0xf;
1009 }
1010 
1011 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1012 {
1013  int64_t pos = avio_tell(pb);
1014 
1015  avio_wb32(pb, 0);
1016  ffio_wfourcc(pb, "avcC");
1017  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1018  return update_size(pb, pos);
1019 }
1020 
1021 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1022 {
1023  int64_t pos = avio_tell(pb);
1024 
1025  avio_wb32(pb, 0);
1026  ffio_wfourcc(pb, "hvcC");
1027  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1028  return update_size(pb, pos);
1029 }
1030 
1031 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1032 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1033 {
1034  int i;
1035  avio_wb32(pb, 24); /* size */
1036  ffio_wfourcc(pb, "ACLR");
1037  ffio_wfourcc(pb, "ACLR");
1038  ffio_wfourcc(pb, "0001");
1039  if (track->enc->color_range == AVCOL_RANGE_MPEG) { /* Legal range (16-235) */
1040  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1041  } else { /* Full range (0-255) */
1042  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1043  }
1044  avio_wb32(pb, 0); /* unknown */
1045 
1046  avio_wb32(pb, 24); /* size */
1047  ffio_wfourcc(pb, "APRG");
1048  ffio_wfourcc(pb, "APRG");
1049  ffio_wfourcc(pb, "0001");
1050  avio_wb32(pb, 1); /* unknown */
1051  avio_wb32(pb, 0); /* unknown */
1052 
1053  avio_wb32(pb, 120); /* size */
1054  ffio_wfourcc(pb, "ARES");
1055  ffio_wfourcc(pb, "ARES");
1056  ffio_wfourcc(pb, "0001");
1057  avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
1058  avio_wb32(pb, track->enc->width);
1059  /* values below are based on samples created with quicktime and avid codecs */
1060  if (track->vos_data[5] & 2) { // interlaced
1061  avio_wb32(pb, track->enc->height / 2);
1062  avio_wb32(pb, 2); /* unknown */
1063  avio_wb32(pb, 0); /* unknown */
1064  avio_wb32(pb, 4); /* unknown */
1065  } else {
1066  avio_wb32(pb, track->enc->height);
1067  avio_wb32(pb, 1); /* unknown */
1068  avio_wb32(pb, 0); /* unknown */
1069  if (track->enc->height == 1080)
1070  avio_wb32(pb, 5); /* unknown */
1071  else
1072  avio_wb32(pb, 6); /* unknown */
1073  }
1074  /* padding */
1075  for (i = 0; i < 10; i++)
1076  avio_wb64(pb, 0);
1077 
1078  /* extra padding for stsd needed */
1079  avio_wb32(pb, 0);
1080  return 0;
1081 }
1082 
1084 {
1085  int tag = track->enc->codec_tag;
1086 
1088  return 0;
1089 
1090  if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
1091  else if (track->enc->codec_id == AV_CODEC_ID_HEVC) tag = MKTAG('h','e','v','1');
1092  else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
1093  else if (track->enc->codec_id == AV_CODEC_ID_EAC3) tag = MKTAG('e','c','-','3');
1094  else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
1095  else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
1096  else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
1097  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
1098  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
1099  else if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE) tag = MKTAG('m','p','4','s');
1100 
1101  return tag;
1102 }
1103 
1104 static const AVCodecTag codec_ipod_tags[] = {
1105  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1106  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1107  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1108  { AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
1109  { AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
1110  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1111  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
1112  { AV_CODEC_ID_NONE, 0 },
1113 };
1114 
1116 {
1117  int tag = track->enc->codec_tag;
1118 
1119  // keep original tag for subs, ipod supports both formats
1120  if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1121  (tag == MKTAG('t', 'x', '3', 'g') ||
1122  tag == MKTAG('t', 'e', 'x', 't'))))
1123  tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
1124 
1125  if (!av_match_ext(s->filename, "m4a") &&
1126  !av_match_ext(s->filename, "m4b") &&
1127  !av_match_ext(s->filename, "m4v"))
1128  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a, .m4v nor .m4b "
1129  "Quicktime/Ipod might not play the file\n");
1130 
1131  return tag;
1132 }
1133 
1135 {
1136  int tag;
1137 
1138  if (track->enc->width == 720) { /* SD */
1139  if (track->enc->height == 480) { /* NTSC */
1140  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1141  else tag = MKTAG('d','v','c',' ');
1142  }else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1143  else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1144  else tag = MKTAG('d','v','p','p');
1145  } else if (track->enc->height == 720) { /* HD 720 line */
1146  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1147  else tag = MKTAG('d','v','h','p');
1148  } else if (track->enc->height == 1080) { /* HD 1080 line */
1149  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1150  else tag = MKTAG('d','v','h','6');
1151  } else {
1152  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1153  return 0;
1154  }
1155 
1156  return tag;
1157 }
1158 
1160 {
1161  AVRational rate = {st->codec->time_base.den, st->codec->time_base.num};
1162  /* if the codec time base makes no sense, try to fallback on stream frame rate */
1163  if (av_timecode_check_frame_rate(rate) < 0) {
1164  av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
1165  rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
1166  rate = st->avg_frame_rate;
1167  }
1168 
1169  return rate;
1170 }
1171 
1173 {
1174  int tag = track->enc->codec_tag;
1175  int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
1176  AVStream *st = track->st;
1177  int rate = av_q2d(find_fps(s, st));
1178 
1179  if (!tag)
1180  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1181 
1182  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) {
1183  if (track->enc->width == 1280 && track->enc->height == 720) {
1184  if (!interlaced) {
1185  if (rate == 24) tag = MKTAG('x','d','v','4');
1186  else if (rate == 25) tag = MKTAG('x','d','v','5');
1187  else if (rate == 30) tag = MKTAG('x','d','v','1');
1188  else if (rate == 50) tag = MKTAG('x','d','v','a');
1189  else if (rate == 60) tag = MKTAG('x','d','v','9');
1190  }
1191  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1192  if (!interlaced) {
1193  if (rate == 24) tag = MKTAG('x','d','v','6');
1194  else if (rate == 25) tag = MKTAG('x','d','v','7');
1195  else if (rate == 30) tag = MKTAG('x','d','v','8');
1196  } else {
1197  if (rate == 25) tag = MKTAG('x','d','v','3');
1198  else if (rate == 30) tag = MKTAG('x','d','v','2');
1199  }
1200  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1201  if (!interlaced) {
1202  if (rate == 24) tag = MKTAG('x','d','v','d');
1203  else if (rate == 25) tag = MKTAG('x','d','v','e');
1204  else if (rate == 30) tag = MKTAG('x','d','v','f');
1205  } else {
1206  if (rate == 25) tag = MKTAG('x','d','v','c');
1207  else if (rate == 30) tag = MKTAG('x','d','v','b');
1208  }
1209  }
1210  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1211  if (track->enc->width == 1280 && track->enc->height == 720) {
1212  if (!interlaced) {
1213  if (rate == 24) tag = MKTAG('x','d','5','4');
1214  else if (rate == 25) tag = MKTAG('x','d','5','5');
1215  else if (rate == 30) tag = MKTAG('x','d','5','1');
1216  else if (rate == 50) tag = MKTAG('x','d','5','a');
1217  else if (rate == 60) tag = MKTAG('x','d','5','9');
1218  }
1219  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1220  if (!interlaced) {
1221  if (rate == 24) tag = MKTAG('x','d','5','d');
1222  else if (rate == 25) tag = MKTAG('x','d','5','e');
1223  else if (rate == 30) tag = MKTAG('x','d','5','f');
1224  } else {
1225  if (rate == 25) tag = MKTAG('x','d','5','c');
1226  else if (rate == 30) tag = MKTAG('x','d','5','b');
1227  }
1228  }
1229  }
1230 
1231  return tag;
1232 }
1233 
1235 {
1236  int tag = track->enc->codec_tag;
1237  int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
1238  AVStream *st = track->st;
1239  int rate = av_q2d(find_fps(s, st));
1240 
1241  if (!tag)
1242  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1243 
1244  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P10) {
1245  if (track->enc->width == 960 && track->enc->height == 720) {
1246  if (!interlaced) {
1247  if (rate == 24) tag = MKTAG('a','i','5','p');
1248  else if (rate == 25) tag = MKTAG('a','i','5','q');
1249  else if (rate == 30) tag = MKTAG('a','i','5','p');
1250  else if (rate == 50) tag = MKTAG('a','i','5','q');
1251  else if (rate == 60) tag = MKTAG('a','i','5','p');
1252  }
1253  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1254  if (!interlaced) {
1255  if (rate == 24) tag = MKTAG('a','i','5','3');
1256  else if (rate == 25) tag = MKTAG('a','i','5','2');
1257  else if (rate == 30) tag = MKTAG('a','i','5','3');
1258  } else {
1259  if (rate == 50) tag = MKTAG('a','i','5','5');
1260  else if (rate == 60) tag = MKTAG('a','i','5','6');
1261  }
1262  }
1263  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P10) {
1264  if (track->enc->width == 1280 && track->enc->height == 720) {
1265  if (!interlaced) {
1266  if (rate == 24) tag = MKTAG('a','i','1','p');
1267  else if (rate == 25) tag = MKTAG('a','i','1','q');
1268  else if (rate == 30) tag = MKTAG('a','i','1','p');
1269  else if (rate == 50) tag = MKTAG('a','i','1','q');
1270  else if (rate == 60) tag = MKTAG('a','i','1','p');
1271  }
1272  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1273  if (!interlaced) {
1274  if (rate == 24) tag = MKTAG('a','i','1','3');
1275  else if (rate == 25) tag = MKTAG('a','i','1','2');
1276  else if (rate == 30) tag = MKTAG('a','i','1','3');
1277  } else {
1278  if (rate == 25) tag = MKTAG('a','i','1','5');
1279  else if (rate == 50) tag = MKTAG('a','i','1','5');
1280  else if (rate == 60) tag = MKTAG('a','i','1','6');
1281  }
1282  }
1283  }
1284 
1285  return tag;
1286 }
1287 
1288 static const struct {
1290  uint32_t tag;
1291  unsigned bps;
1292 } mov_pix_fmt_tags[] = {
1293  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1294  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1295  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1296  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1297  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1298  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1299  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1300  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1301  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1302  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1303  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1304  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1305  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1306  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1307  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1308 };
1309 
1311 {
1312  int tag = track->enc->codec_tag;
1313  int i;
1314  enum AVPixelFormat pix_fmt;
1315 
1316  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1317  if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
1318  tag = mov_pix_fmt_tags[i].tag;
1319  track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1320  if (track->enc->codec_tag == mov_pix_fmt_tags[i].tag)
1321  break;
1322  }
1323  }
1324 
1326  track->enc->bits_per_coded_sample);
1327  if (tag == MKTAG('r','a','w',' ') &&
1328  track->enc->pix_fmt != pix_fmt &&
1329  track->enc->pix_fmt != AV_PIX_FMT_NONE)
1330  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1331  av_get_pix_fmt_name(track->enc->pix_fmt));
1332  return tag;
1333 }
1334 
1336 {
1337  int tag = track->enc->codec_tag;
1338 
1339  if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1340  (track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
1341  track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
1342  track->enc->codec_id == AV_CODEC_ID_H263 ||
1343  track->enc->codec_id == AV_CODEC_ID_H264 ||
1344  track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1345  av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
1346  if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
1347  tag = mov_get_dv_codec_tag(s, track);
1348  else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
1349  tag = mov_get_rawvideo_codec_tag(s, track);
1350  else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1351  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1352  else if (track->enc->codec_id == AV_CODEC_ID_H264)
1353  tag = mov_get_h264_codec_tag(s, track);
1354  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1356  if (!tag) { // if no mac fcc found, try with Microsoft tags
1358  if (tag)
1359  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1360  "the file may be unplayable!\n");
1361  }
1362  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1364  if (!tag) { // if no mac fcc found, try with Microsoft tags
1365  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
1366  if (ms_tag) {
1367  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1368  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1369  "the file may be unplayable!\n");
1370  }
1371  }
1372  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1374  }
1375 
1376  return tag;
1377 }
1378 
1379 static const AVCodecTag codec_3gp_tags[] = {
1380  { AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
1381  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1382  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1383  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1384  { AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
1385  { AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
1386  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1387  { AV_CODEC_ID_NONE, 0 },
1388 };
1389 
1390 static const AVCodecTag codec_f4v_tags[] = { // XXX: add GIF/PNG/JPEG?
1391  { AV_CODEC_ID_MP3, MKTAG('.','m','p','3') },
1392  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1393  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1394  { AV_CODEC_ID_VP6A, MKTAG('V','P','6','A') },
1395  { AV_CODEC_ID_VP6F, MKTAG('V','P','6','F') },
1396  { AV_CODEC_ID_NONE, 0 },
1397 };
1398 
1400 {
1401  int tag;
1402 
1403  if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
1404  tag = mp4_get_codec_tag(s, track);
1405  else if (track->mode == MODE_ISM) {
1406  tag = mp4_get_codec_tag(s, track);
1407  if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
1408  tag = MKTAG('w', 'm', 'a', ' ');
1409  } else if (track->mode == MODE_IPOD)
1410  tag = ipod_get_codec_tag(s, track);
1411  else if (track->mode & MODE_3GP)
1412  tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
1413  else if (track->mode == MODE_F4V)
1414  tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
1415  else
1416  tag = mov_get_codec_tag(s, track);
1417 
1418  return tag;
1419 }
1420 
1421 /** Write uuid atom.
1422  * Needed to make file play in iPods running newest firmware
1423  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1424  */
1426 {
1427  avio_wb32(pb, 28);
1428  ffio_wfourcc(pb, "uuid");
1429  avio_wb32(pb, 0x6b6840f2);
1430  avio_wb32(pb, 0x5f244fc5);
1431  avio_wb32(pb, 0xba39a51b);
1432  avio_wb32(pb, 0xcf0323f3);
1433  avio_wb32(pb, 0x0);
1434  return 28;
1435 }
1436 
1437 static const uint16_t fiel_data[] = {
1438  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1439 };
1440 
1441 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
1442 {
1443  unsigned mov_field_order = 0;
1444  if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
1445  mov_field_order = fiel_data[track->enc->field_order];
1446  else
1447  return 0;
1448  avio_wb32(pb, 10);
1449  ffio_wfourcc(pb, "fiel");
1450  avio_wb16(pb, mov_field_order);
1451  return 10;
1452 }
1453 
1455 {
1456  int64_t pos = avio_tell(pb);
1457  avio_wb32(pb, 0); /* size */
1458  avio_wl32(pb, track->tag); // store it byteswapped
1459  avio_wb32(pb, 0); /* Reserved */
1460  avio_wb16(pb, 0); /* Reserved */
1461  avio_wb16(pb, 1); /* Data-reference index */
1462 
1463  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1464  mov_write_esds_tag(pb, track);
1465  else if (track->enc->extradata_size)
1466  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1467 
1468  return update_size(pb, pos);
1469 }
1470 
1471 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1472 {
1473  AVRational sar;
1474  av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
1475  track->enc->sample_aspect_ratio.den, INT_MAX);
1476 
1477  avio_wb32(pb, 16);
1478  ffio_wfourcc(pb, "pasp");
1479  avio_wb32(pb, sar.num);
1480  avio_wb32(pb, sar.den);
1481  return 16;
1482 }
1483 
1484 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
1485 {
1486  AVDictionaryEntry *encoder;
1487  int xdcam_res = (track->enc->width == 1280 && track->enc->height == 720)
1488  || (track->enc->width == 1440 && track->enc->height == 1080)
1489  || (track->enc->width == 1920 && track->enc->height == 1080);
1490 
1491  if (track->mode == MODE_MOV &&
1492  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
1493  av_strlcpy(compressor_name, encoder->value, 32);
1494  } else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
1495  int interlaced = track->enc->field_order > AV_FIELD_PROGRESSIVE;
1496  AVStream *st = track->st;
1497  int rate = av_q2d(find_fps(NULL, st));
1498  av_strlcatf(compressor_name, len, "XDCAM");
1499  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1500  av_strlcatf(compressor_name, len, " HD422");
1501  } else if(track->enc->width == 1440) {
1502  av_strlcatf(compressor_name, len, " HD");
1503  } else
1504  av_strlcatf(compressor_name, len, " EX");
1505 
1506  av_strlcatf(compressor_name, len, " %d%c", track->enc->height, interlaced ? 'i' : 'p');
1507 
1508  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
1509  }
1510 }
1511 
1513 {
1514  int64_t pos = avio_tell(pb);
1515  char compressor_name[32] = { 0 };
1516 
1517  avio_wb32(pb, 0); /* size */
1518  avio_wl32(pb, track->tag); // store it byteswapped
1519  avio_wb32(pb, 0); /* Reserved */
1520  avio_wb16(pb, 0); /* Reserved */
1521  avio_wb16(pb, 1); /* Data-reference index */
1522 
1523  avio_wb16(pb, 0); /* Codec stream version */
1524  avio_wb16(pb, 0); /* Codec stream revision (=0) */
1525  if (track->mode == MODE_MOV) {
1526  ffio_wfourcc(pb, "FFMP"); /* Vendor */
1527  if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
1528  avio_wb32(pb, 0); /* Temporal Quality */
1529  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
1530  } else {
1531  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
1532  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
1533  }
1534  } else {
1535  avio_wb32(pb, 0); /* Reserved */
1536  avio_wb32(pb, 0); /* Reserved */
1537  avio_wb32(pb, 0); /* Reserved */
1538  }
1539  avio_wb16(pb, track->enc->width); /* Video width */
1540  avio_wb16(pb, track->height); /* Video height */
1541  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
1542  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
1543  avio_wb32(pb, 0); /* Data size (= 0) */
1544  avio_wb16(pb, 1); /* Frame count (= 1) */
1545 
1546  /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
1547  find_compressor(compressor_name, 32, track);
1548  avio_w8(pb, strlen(compressor_name));
1549  avio_write(pb, compressor_name, 31);
1550 
1551  if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
1552  avio_wb16(pb, track->enc->bits_per_coded_sample);
1553  else
1554  avio_wb16(pb, 0x18); /* Reserved */
1555  avio_wb16(pb, 0xffff); /* Reserved */
1556  if (track->tag == MKTAG('m','p','4','v'))
1557  mov_write_esds_tag(pb, track);
1558  else if (track->enc->codec_id == AV_CODEC_ID_H263)
1559  mov_write_d263_tag(pb);
1560  else if (track->enc->codec_id == AV_CODEC_ID_AVUI ||
1561  track->enc->codec_id == AV_CODEC_ID_SVQ3) {
1562  mov_write_extradata_tag(pb, track);
1563  avio_wb32(pb, 0);
1564  } else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
1565  mov_write_avid_tag(pb, track);
1566  else if (track->enc->codec_id == AV_CODEC_ID_HEVC)
1567  mov_write_hvcc_tag(pb, track);
1568  else if (track->enc->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
1569  mov_write_avcc_tag(pb, track);
1570  if (track->mode == MODE_IPOD)
1572  } else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
1573  mov_write_dvc1_tag(pb, track);
1574  else if (track->enc->codec_id == AV_CODEC_ID_VP6F ||
1575  track->enc->codec_id == AV_CODEC_ID_VP6A) {
1576  /* Don't write any potential extradata here - the cropping
1577  * is signalled via the normal width/height fields. */
1578  } else if (track->vos_len > 0)
1579  mov_write_glbl_tag(pb, track);
1580 
1581  if (track->enc->codec_id != AV_CODEC_ID_H264 &&
1582  track->enc->codec_id != AV_CODEC_ID_MPEG4 &&
1583  track->enc->codec_id != AV_CODEC_ID_DNXHD)
1584  if (track->enc->field_order != AV_FIELD_UNKNOWN)
1585  mov_write_fiel_tag(pb, track);
1586 
1587  if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
1588  track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
1589  mov_write_pasp_tag(pb, track);
1590  }
1591 
1592  return update_size(pb, pos);
1593 }
1594 
1595 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
1596 {
1597  int64_t pos = avio_tell(pb);
1598  avio_wb32(pb, 0); /* size */
1599  ffio_wfourcc(pb, "rtp ");
1600  avio_wb32(pb, 0); /* Reserved */
1601  avio_wb16(pb, 0); /* Reserved */
1602  avio_wb16(pb, 1); /* Data-reference index */
1603 
1604  avio_wb16(pb, 1); /* Hint track version */
1605  avio_wb16(pb, 1); /* Highest compatible version */
1606  avio_wb32(pb, track->max_packet_size); /* Max packet size */
1607 
1608  avio_wb32(pb, 12); /* size */
1609  ffio_wfourcc(pb, "tims");
1610  avio_wb32(pb, track->timescale);
1611 
1612  return update_size(pb, pos);
1613 }
1614 
1615 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
1616 {
1617  uint64_t str_size =strlen(reel_name);
1618  int64_t pos = avio_tell(pb);
1619 
1620  if (str_size >= UINT16_MAX){
1621  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
1622  avio_wb16(pb, 0);
1623  return AVERROR(EINVAL);
1624  }
1625 
1626  avio_wb32(pb, 0); /* size */
1627  ffio_wfourcc(pb, "name"); /* Data format */
1628  avio_wb16(pb, str_size); /* string size */
1629  avio_wb16(pb, track->language); /* langcode */
1630  avio_write(pb, reel_name, str_size); /* reel name */
1631  return update_size(pb,pos);
1632 }
1633 
1634 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
1635 {
1636  int64_t pos = avio_tell(pb);
1637 #if 1
1638  int frame_duration = av_rescale(track->timescale, track->enc->time_base.num, track->enc->time_base.den);
1639  int nb_frames = 1.0/av_q2d(track->enc->time_base) + 0.5;
1640  AVDictionaryEntry *t = NULL;
1641 
1642  if (nb_frames > 255) {
1643  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
1644  return AVERROR(EINVAL);
1645  }
1646 
1647  avio_wb32(pb, 0); /* size */
1648  ffio_wfourcc(pb, "tmcd"); /* Data format */
1649  avio_wb32(pb, 0); /* Reserved */
1650  avio_wb32(pb, 1); /* Data reference index */
1651  avio_wb32(pb, 0); /* Flags */
1652  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
1653  avio_wb32(pb, track->timescale); /* Timescale */
1654  avio_wb32(pb, frame_duration); /* Frame duration */
1655  avio_w8(pb, nb_frames); /* Number of frames */
1656  avio_w8(pb, 0); /* Reserved */
1657 
1658  if (track->st)
1659  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
1660 
1661  if (t && utf8len(t->value))
1662  mov_write_source_reference_tag(pb, track, t->value);
1663  else
1664  avio_wb16(pb, 0); /* zero size */
1665 #else
1666 
1667  avio_wb32(pb, 0); /* size */
1668  ffio_wfourcc(pb, "tmcd"); /* Data format */
1669  avio_wb32(pb, 0); /* Reserved */
1670  avio_wb32(pb, 1); /* Data reference index */
1671  if (track->enc->extradata_size)
1672  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1673 #endif
1674  return update_size(pb, pos);
1675 }
1676 
1677 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
1678 {
1679  int64_t pos = avio_tell(pb);
1680  avio_wb32(pb, 0); /* size */
1681  ffio_wfourcc(pb, "stsd");
1682  avio_wb32(pb, 0); /* version & flags */
1683  avio_wb32(pb, 1); /* entry count */
1684  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1685  mov_write_video_tag(pb, track);
1686  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1687  mov_write_audio_tag(pb, track);
1688  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1689  mov_write_subtitle_tag(pb, track);
1690  else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
1691  mov_write_rtp_tag(pb, track);
1692  else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
1693  mov_write_tmcd_tag(pb, track);
1694  return update_size(pb, pos);
1695 }
1696 
1697 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
1698 {
1699  MOVStts *ctts_entries;
1700  uint32_t entries = 0;
1701  uint32_t atom_size;
1702  int i;
1703 
1704  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
1705  ctts_entries[0].count = 1;
1706  ctts_entries[0].duration = track->cluster[0].cts;
1707  for (i = 1; i < track->entry; i++) {
1708  if (track->cluster[i].cts == ctts_entries[entries].duration) {
1709  ctts_entries[entries].count++; /* compress */
1710  } else {
1711  entries++;
1712  ctts_entries[entries].duration = track->cluster[i].cts;
1713  ctts_entries[entries].count = 1;
1714  }
1715  }
1716  entries++; /* last one */
1717  atom_size = 16 + (entries * 8);
1718  avio_wb32(pb, atom_size); /* size */
1719  ffio_wfourcc(pb, "ctts");
1720  avio_wb32(pb, 0); /* version & flags */
1721  avio_wb32(pb, entries); /* entry count */
1722  for (i = 0; i < entries; i++) {
1723  avio_wb32(pb, ctts_entries[i].count);
1724  avio_wb32(pb, ctts_entries[i].duration);
1725  }
1726  av_free(ctts_entries);
1727  return atom_size;
1728 }
1729 
1730 /* Time to sample atom */
1731 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
1732 {
1733  MOVStts *stts_entries;
1734  uint32_t entries = -1;
1735  uint32_t atom_size;
1736  int i;
1737 
1738  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
1739  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
1740  stts_entries[0].count = track->sample_count;
1741  stts_entries[0].duration = 1;
1742  entries = 1;
1743  } else {
1744  stts_entries = track->entry ?
1745  av_malloc_array(track->entry, sizeof(*stts_entries)) : /* worst case */
1746  NULL;
1747  for (i = 0; i < track->entry; i++) {
1748  int duration = get_cluster_duration(track, i);
1749  if (i && duration == stts_entries[entries].duration) {
1750  stts_entries[entries].count++; /* compress */
1751  } else {
1752  entries++;
1753  stts_entries[entries].duration = duration;
1754  stts_entries[entries].count = 1;
1755  }
1756  }
1757  entries++; /* last one */
1758  }
1759  atom_size = 16 + (entries * 8);
1760  avio_wb32(pb, atom_size); /* size */
1761  ffio_wfourcc(pb, "stts");
1762  avio_wb32(pb, 0); /* version & flags */
1763  avio_wb32(pb, entries); /* entry count */
1764  for (i = 0; i < entries; i++) {
1765  avio_wb32(pb, stts_entries[i].count);
1766  avio_wb32(pb, stts_entries[i].duration);
1767  }
1768  av_free(stts_entries);
1769  return atom_size;
1770 }
1771 
1773 {
1774  avio_wb32(pb, 28); /* size */
1775  ffio_wfourcc(pb, "dref");
1776  avio_wb32(pb, 0); /* version & flags */
1777  avio_wb32(pb, 1); /* entry count */
1778 
1779  avio_wb32(pb, 0xc); /* size */
1780  //FIXME add the alis and rsrc atom
1781  ffio_wfourcc(pb, "url ");
1782  avio_wb32(pb, 1); /* version & flags */
1783 
1784  return 28;
1785 }
1786 
1787 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
1788 {
1789  int64_t pos = avio_tell(pb);
1790  avio_wb32(pb, 0); /* size */
1791  ffio_wfourcc(pb, "stbl");
1792  mov_write_stsd_tag(pb, track);
1793  mov_write_stts_tag(pb, track);
1794  if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1795  track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
1796  track->has_keyframes && track->has_keyframes < track->entry)
1797  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
1798  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
1800  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
1801  track->flags & MOV_TRACK_CTTS)
1802  mov_write_ctts_tag(pb, track);
1803  mov_write_stsc_tag(pb, track);
1804  mov_write_stsz_tag(pb, track);
1805  mov_write_stco_tag(pb, track);
1806  return update_size(pb, pos);
1807 }
1808 
1810 {
1811  int64_t pos = avio_tell(pb);
1812  avio_wb32(pb, 0); /* size */
1813  ffio_wfourcc(pb, "dinf");
1814  mov_write_dref_tag(pb);
1815  return update_size(pb, pos);
1816 }
1817 
1819 {
1820  avio_wb32(pb, 12);
1821  ffio_wfourcc(pb, "nmhd");
1822  avio_wb32(pb, 0);
1823  return 12;
1824 }
1825 
1826 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
1827 {
1828  int64_t pos = avio_tell(pb);
1829  const char *font = "Lucida Grande";
1830  avio_wb32(pb, 0); /* size */
1831  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
1832  avio_wb32(pb, 0); /* version & flags */
1833  avio_wb16(pb, 0); /* text font */
1834  avio_wb16(pb, 0); /* text face */
1835  avio_wb16(pb, 12); /* text size */
1836  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
1837  avio_wb16(pb, 0x0000); /* text color (red) */
1838  avio_wb16(pb, 0x0000); /* text color (green) */
1839  avio_wb16(pb, 0x0000); /* text color (blue) */
1840  avio_wb16(pb, 0xffff); /* background color (red) */
1841  avio_wb16(pb, 0xffff); /* background color (green) */
1842  avio_wb16(pb, 0xffff); /* background color (blue) */
1843  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
1844  avio_write(pb, font, strlen(font)); /* font name */
1845  return update_size(pb, pos);
1846 }
1847 
1848 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
1849 {
1850  int64_t pos = avio_tell(pb);
1851  avio_wb32(pb, 0); /* size */
1852  ffio_wfourcc(pb, "gmhd");
1853  avio_wb32(pb, 0x18); /* gmin size */
1854  ffio_wfourcc(pb, "gmin");/* generic media info */
1855  avio_wb32(pb, 0); /* version & flags */
1856  avio_wb16(pb, 0x40); /* graphics mode = */
1857  avio_wb16(pb, 0x8000); /* opColor (r?) */
1858  avio_wb16(pb, 0x8000); /* opColor (g?) */
1859  avio_wb16(pb, 0x8000); /* opColor (b?) */
1860  avio_wb16(pb, 0); /* balance */
1861  avio_wb16(pb, 0); /* reserved */
1862 
1863  /*
1864  * This special text atom is required for
1865  * Apple Quicktime chapters. The contents
1866  * don't appear to be documented, so the
1867  * bytes are copied verbatim.
1868  */
1869  if (track->tag != MKTAG('c','6','0','8')) {
1870  avio_wb32(pb, 0x2C); /* size */
1871  ffio_wfourcc(pb, "text");
1872  avio_wb16(pb, 0x01);
1873  avio_wb32(pb, 0x00);
1874  avio_wb32(pb, 0x00);
1875  avio_wb32(pb, 0x00);
1876  avio_wb32(pb, 0x01);
1877  avio_wb32(pb, 0x00);
1878  avio_wb32(pb, 0x00);
1879  avio_wb32(pb, 0x00);
1880  avio_wb32(pb, 0x00004000);
1881  avio_wb16(pb, 0x0000);
1882  }
1883 
1884  if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1885  int64_t tmcd_pos = avio_tell(pb);
1886  avio_wb32(pb, 0); /* size */
1887  ffio_wfourcc(pb, "tmcd");
1888  mov_write_tcmi_tag(pb, track);
1889  update_size(pb, tmcd_pos);
1890  }
1891  return update_size(pb, pos);
1892 }
1893 
1895 {
1896  avio_wb32(pb, 16); /* size */
1897  ffio_wfourcc(pb, "smhd");
1898  avio_wb32(pb, 0); /* version & flags */
1899  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
1900  avio_wb16(pb, 0); /* reserved */
1901  return 16;
1902 }
1903 
1905 {
1906  avio_wb32(pb, 0x14); /* size (always 0x14) */
1907  ffio_wfourcc(pb, "vmhd");
1908  avio_wb32(pb, 0x01); /* version & flags */
1909  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
1910  return 0x14;
1911 }
1912 
1913 static int is_clcp_track(MOVTrack *track)
1914 {
1915  return track->tag == MKTAG('c','7','0','8') ||
1916  track->tag == MKTAG('c','6','0','8');
1917 }
1918 
1919 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
1920 {
1921  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
1922  int64_t pos = avio_tell(pb);
1923 
1924  hdlr = "dhlr";
1925  hdlr_type = "url ";
1926  descr = "DataHandler";
1927 
1928  if (track) {
1929  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
1930  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1931  hdlr_type = "vide";
1932  descr = "VideoHandler";
1933  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1934  hdlr_type = "soun";
1935  descr = "SoundHandler";
1936  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1937  if (is_clcp_track(track)) {
1938  hdlr_type = "clcp";
1939  descr = "ClosedCaptionHandler";
1940  } else {
1941  if (track->tag == MKTAG('t','x','3','g')) {
1942  hdlr_type = "sbtl";
1943  } else if (track->tag == MKTAG('m','p','4','s')) {
1944  hdlr_type = "subp";
1945  } else {
1946  hdlr_type = "text";
1947  }
1948  descr = "SubtitleHandler";
1949  }
1950  } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
1951  hdlr_type = "hint";
1952  descr = "HintHandler";
1953  } else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1954  hdlr_type = "tmcd";
1955  descr = "TimeCodeHandler";
1956  } else {
1957  char tag_buf[32];
1958  av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
1959  track->enc->codec_tag);
1960 
1961  av_log(track->enc, AV_LOG_WARNING,
1962  "Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
1963  tag_buf, track->enc->codec_tag);
1964  }
1965  if (track->st) {
1966  // hdlr.name is used by some players to identify the content title
1967  // of the track. So if an alternate handler description is
1968  // specified, use it.
1969  AVDictionaryEntry *t;
1970  t = av_dict_get(track->st->metadata, "handler", NULL, 0);
1971  if (t && utf8len(t->value))
1972  descr = t->value;
1973  }
1974  }
1975 
1976  avio_wb32(pb, 0); /* size */
1977  ffio_wfourcc(pb, "hdlr");
1978  avio_wb32(pb, 0); /* Version & flags */
1979  avio_write(pb, hdlr, 4); /* handler */
1980  ffio_wfourcc(pb, hdlr_type); /* handler type */
1981  avio_wb32(pb, 0); /* reserved */
1982  avio_wb32(pb, 0); /* reserved */
1983  avio_wb32(pb, 0); /* reserved */
1984  if (!track || track->mode == MODE_MOV)
1985  avio_w8(pb, strlen(descr)); /* pascal string */
1986  avio_write(pb, descr, strlen(descr)); /* handler description */
1987  if (track && track->mode != MODE_MOV)
1988  avio_w8(pb, 0); /* c string */
1989  return update_size(pb, pos);
1990 }
1991 
1993 {
1994  /* This atom must be present, but leaving the values at zero
1995  * seems harmless. */
1996  avio_wb32(pb, 28); /* size */
1997  ffio_wfourcc(pb, "hmhd");
1998  avio_wb32(pb, 0); /* version, flags */
1999  avio_wb16(pb, 0); /* maxPDUsize */
2000  avio_wb16(pb, 0); /* avgPDUsize */
2001  avio_wb32(pb, 0); /* maxbitrate */
2002  avio_wb32(pb, 0); /* avgbitrate */
2003  avio_wb32(pb, 0); /* reserved */
2004  return 28;
2005 }
2006 
2007 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
2008 {
2009  int64_t pos = avio_tell(pb);
2010  avio_wb32(pb, 0); /* size */
2011  ffio_wfourcc(pb, "minf");
2012  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
2013  mov_write_vmhd_tag(pb);
2014  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2015  mov_write_smhd_tag(pb);
2016  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2017  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
2018  mov_write_gmhd_tag(pb, track);
2019  } else {
2020  mov_write_nmhd_tag(pb);
2021  }
2022  } else if (track->tag == MKTAG('r','t','p',' ')) {
2023  mov_write_hmhd_tag(pb);
2024  } else if (track->tag == MKTAG('t','m','c','d')) {
2025  mov_write_gmhd_tag(pb, track);
2026  }
2027  if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
2028  mov_write_hdlr_tag(pb, NULL);
2029  mov_write_dinf_tag(pb);
2030  mov_write_stbl_tag(pb, track);
2031  return update_size(pb, pos);
2032 }
2033 
2034 static int mov_write_mdhd_tag(AVIOContext *pb, 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)
2054  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2055  else
2056  (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
2057  avio_wb16(pb, track->language); /* language */
2058  avio_wb16(pb, 0); /* reserved (quality) */
2059 
2060  if (version != 0 && track->mode == MODE_MOV) {
2061  av_log(NULL, AV_LOG_ERROR,
2062  "FATAL error, file duration too long for timebase, this file will not be\n"
2063  "playable with quicktime. Choose a different timebase or a different\n"
2064  "container format\n");
2065  }
2066 
2067  return 32;
2068 }
2069 
2070 static int mov_write_mdia_tag(AVIOContext *pb, MOVTrack *track)
2071 {
2072  int64_t pos = avio_tell(pb);
2073  avio_wb32(pb, 0); /* size */
2074  ffio_wfourcc(pb, "mdia");
2075  mov_write_mdhd_tag(pb, track);
2076  mov_write_hdlr_tag(pb, track);
2077  mov_write_minf_tag(pb, track);
2078  return update_size(pb, pos);
2079 }
2080 
2081 /* transformation matrix
2082  |a b u|
2083  |c d v|
2084  |tx ty w| */
2085 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
2086  int16_t d, int16_t tx, int16_t ty)
2087 {
2088  avio_wb32(pb, a << 16); /* 16.16 format */
2089  avio_wb32(pb, b << 16); /* 16.16 format */
2090  avio_wb32(pb, 0); /* u in 2.30 format */
2091  avio_wb32(pb, c << 16); /* 16.16 format */
2092  avio_wb32(pb, d << 16); /* 16.16 format */
2093  avio_wb32(pb, 0); /* v in 2.30 format */
2094  avio_wb32(pb, tx << 16); /* 16.16 format */
2095  avio_wb32(pb, ty << 16); /* 16.16 format */
2096  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
2097 }
2098 
2100  MOVTrack *track, AVStream *st)
2101 {
2103  track->timescale, AV_ROUND_UP);
2104  int version = duration < INT32_MAX ? 0 : 1;
2106  int rotation = 0;
2107  int group = 0;
2108 
2109 
2110  if (st) {
2111  if (mov->per_stream_grouping)
2112  group = st->index;
2113  else
2114  group = st->codec->codec_type;
2115  }
2116 
2117  if (track->flags & MOV_TRACK_ENABLED)
2118  flags |= MOV_TKHD_FLAG_ENABLED;
2119 
2120  if (track->mode == MODE_ISM)
2121  version = 1;
2122 
2123  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
2124  ffio_wfourcc(pb, "tkhd");
2125  avio_w8(pb, version);
2126  avio_wb24(pb, flags);
2127  if (version == 1) {
2128  avio_wb64(pb, track->time);
2129  avio_wb64(pb, track->time);
2130  } else {
2131  avio_wb32(pb, track->time); /* creation time */
2132  avio_wb32(pb, track->time); /* modification time */
2133  }
2134  avio_wb32(pb, track->track_id); /* track-id */
2135  avio_wb32(pb, 0); /* reserved */
2136  if (!track->entry)
2137  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2138  else
2139  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
2140 
2141  avio_wb32(pb, 0); /* reserved */
2142  avio_wb32(pb, 0); /* reserved */
2143  avio_wb16(pb, 0); /* layer */
2144  avio_wb16(pb, group); /* alternate group) */
2145  /* Volume, only for audio */
2146  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2147  avio_wb16(pb, 0x0100);
2148  else
2149  avio_wb16(pb, 0);
2150  avio_wb16(pb, 0); /* reserved */
2151 
2152  /* Matrix structure */
2153  if (st && st->metadata) {
2154  AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
2155  rotation = (rot && rot->value) ? atoi(rot->value) : 0;
2156  }
2157  if (rotation == 90) {
2158  write_matrix(pb, 0, 1, -1, 0, track->enc->height, 0);
2159  } else if (rotation == 180) {
2160  write_matrix(pb, -1, 0, 0, -1, track->enc->width, track->enc->height);
2161  } else if (rotation == 270) {
2162  write_matrix(pb, 0, -1, 1, 0, 0, track->enc->width);
2163  } else {
2164  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2165  }
2166  /* Track width and height, for visual only */
2167  if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
2168  track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
2169  if (track->mode == MODE_MOV) {
2170  avio_wb32(pb, track->enc->width << 16);
2171  avio_wb32(pb, track->height << 16);
2172  } else {
2173  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2174  if (!sample_aspect_ratio || track->height != track->enc->height)
2175  sample_aspect_ratio = 1;
2176  avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
2177  avio_wb32(pb, track->height * 0x10000);
2178  }
2179  } else {
2180  avio_wb32(pb, 0);
2181  avio_wb32(pb, 0);
2182  }
2183  return 0x5c;
2184 }
2185 
2186 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
2187 {
2189  track->enc->sample_aspect_ratio.den);
2190 
2191  int64_t pos = avio_tell(pb);
2192 
2193  avio_wb32(pb, 0); /* size */
2194  ffio_wfourcc(pb, "tapt");
2195 
2196  avio_wb32(pb, 20);
2197  ffio_wfourcc(pb, "clef");
2198  avio_wb32(pb, 0);
2199  avio_wb32(pb, width << 16);
2200  avio_wb32(pb, track->enc->height << 16);
2201 
2202  avio_wb32(pb, 20);
2203  ffio_wfourcc(pb, "prof");
2204  avio_wb32(pb, 0);
2205  avio_wb32(pb, width << 16);
2206  avio_wb32(pb, track->enc->height << 16);
2207 
2208  avio_wb32(pb, 20);
2209  ffio_wfourcc(pb, "enof");
2210  avio_wb32(pb, 0);
2211  avio_wb32(pb, track->enc->width << 16);
2212  avio_wb32(pb, track->enc->height << 16);
2213 
2214  return update_size(pb, pos);
2215 }
2216 
2217 // This box seems important for the psp playback ... without it the movie seems to hang
2219  MOVTrack *track)
2220 {
2222  track->timescale, AV_ROUND_UP);
2223  int version = duration < INT32_MAX ? 0 : 1;
2224  int entry_size, entry_count, size;
2225  int64_t delay, start_ct = track->cluster[0].cts;
2226  delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
2227  track->timescale, AV_ROUND_DOWN);
2228  version |= delay < INT32_MAX ? 0 : 1;
2229 
2230  entry_size = (version == 1) ? 20 : 12;
2231  entry_count = 1 + (delay > 0);
2232  size = 24 + entry_count * entry_size;
2233 
2234  /* write the atom data */
2235  avio_wb32(pb, size);
2236  ffio_wfourcc(pb, "edts");
2237  avio_wb32(pb, size - 8);
2238  ffio_wfourcc(pb, "elst");
2239  avio_w8(pb, version);
2240  avio_wb24(pb, 0); /* flags */
2241 
2242  avio_wb32(pb, entry_count);
2243  if (delay > 0) { /* add an empty edit to delay presentation */
2244  /* In the positive delay case, the delay includes the cts
2245  * offset, and the second edit list entry below trims out
2246  * the same amount from the actual content. This makes sure
2247  * that the offsetted last sample is included in the edit
2248  * list duration as well. */
2249  if (version == 1) {
2250  avio_wb64(pb, delay);
2251  avio_wb64(pb, -1);
2252  } else {
2253  avio_wb32(pb, delay);
2254  avio_wb32(pb, -1);
2255  }
2256  avio_wb32(pb, 0x00010000);
2257  } else {
2258  /* Avoid accidentally ending up with start_ct = -1 which has got a
2259  * special meaning. Normally start_ct should end up positive or zero
2260  * here, but use FFMIN in case dts is a a small positive integer
2261  * rounded to 0 when represented in MOV_TIMESCALE units. */
2263  start_ct = -FFMIN(track->cluster[0].dts, 0);
2264  /* Note, this delay is calculated from the pts of the first sample,
2265  * ensuring that we don't reduce the duration for cases with
2266  * dts<0 pts=0. */
2267  duration += delay;
2268  }
2269 
2270  /* For fragmented files, we don't know the full length yet. Setting
2271  * duration to 0 allows us to only specify the offset, including
2272  * the rest of the content (from all future fragments) without specifying
2273  * an explicit duration. */
2274  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2275  duration = 0;
2276 
2277  /* duration */
2278  if (version == 1) {
2279  avio_wb64(pb, duration);
2280  avio_wb64(pb, start_ct);
2281  } else {
2282  avio_wb32(pb, duration);
2283  avio_wb32(pb, start_ct);
2284  }
2285  avio_wb32(pb, 0x00010000);
2286  return size;
2287 }
2288 
2289 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
2290 {
2291  avio_wb32(pb, 20); // size
2292  ffio_wfourcc(pb, "tref");
2293  avio_wb32(pb, 12); // size (subatom)
2294  avio_wl32(pb, track->tref_tag);
2295  avio_wb32(pb, track->tref_id);
2296  return 20;
2297 }
2298 
2299 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
2301 {
2302  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
2303  ffio_wfourcc(pb, "uuid");
2304  ffio_wfourcc(pb, "USMT");
2305  avio_wb32(pb, 0x21d24fce);
2306  avio_wb32(pb, 0xbb88695c);
2307  avio_wb32(pb, 0xfac9c740);
2308  avio_wb32(pb, 0x1c); // another size here!
2309  ffio_wfourcc(pb, "MTDT");
2310  avio_wb32(pb, 0x00010012);
2311  avio_wb32(pb, 0x0a);
2312  avio_wb32(pb, 0x55c40000);
2313  avio_wb32(pb, 0x1);
2314  avio_wb32(pb, 0x0);
2315  return 0x34;
2316 }
2317 
2318 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
2319 {
2320  AVFormatContext *ctx = track->rtp_ctx;
2321  char buf[1000] = "";
2322  int len;
2323 
2324  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
2325  NULL, NULL, 0, 0, ctx);
2326  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
2327  len = strlen(buf);
2328 
2329  avio_wb32(pb, len + 24);
2330  ffio_wfourcc(pb, "udta");
2331  avio_wb32(pb, len + 16);
2332  ffio_wfourcc(pb, "hnti");
2333  avio_wb32(pb, len + 8);
2334  ffio_wfourcc(pb, "sdp ");
2335  avio_write(pb, buf, len);
2336  return len + 24;
2337 }
2338 
2340  const char *tag, const char *str)
2341 {
2342  int64_t pos = avio_tell(pb);
2343  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
2344  if (!t || !utf8len(t->value))
2345  return 0;
2346 
2347  avio_wb32(pb, 0); /* size */
2348  ffio_wfourcc(pb, tag); /* type */
2349  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
2350  return update_size(pb, pos);
2351 }
2352 
2354  AVStream *st)
2355 {
2356  AVIOContext *pb_buf;
2357  int ret, size;
2358  uint8_t *buf;
2359 
2360  if (!st || mov->fc->flags & AVFMT_FLAG_BITEXACT)
2361  return 0;
2362 
2363  ret = avio_open_dyn_buf(&pb_buf);
2364  if (ret < 0)
2365  return ret;
2366 
2367  if (mov->mode & MODE_MP4)
2368  mov_write_track_metadata(pb_buf, st, "name", "title");
2369 
2370  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2371  avio_wb32(pb, size + 8);
2372  ffio_wfourcc(pb, "udta");
2373  avio_write(pb, buf, size);
2374  }
2375  av_free(buf);
2376 
2377  return 0;
2378 }
2379 
2381  MOVTrack *track, AVStream *st)
2382 {
2383  int64_t pos = avio_tell(pb);
2384  avio_wb32(pb, 0); /* size */
2385  ffio_wfourcc(pb, "trak");
2386  mov_write_tkhd_tag(pb, mov, track, st);
2387  if (supports_edts(mov))
2388  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
2389  if (track->tref_tag)
2390  mov_write_tref_tag(pb, track);
2391  mov_write_mdia_tag(pb, track);
2392  if (track->mode == MODE_PSP)
2393  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
2394  if (track->tag == MKTAG('r','t','p',' '))
2395  mov_write_udta_sdp(pb, track);
2396  if (track->mode == MODE_MOV) {
2397  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2398  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2399  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
2400  mov_write_tapt_tag(pb, track);
2401  }
2402  }
2403  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
2404  mov_write_tapt_tag(pb, track);
2405  }
2406  }
2407  mov_write_track_udta_tag(pb, mov, st);
2408  return update_size(pb, pos);
2409 }
2410 
2412 {
2413  int i, has_audio = 0, has_video = 0;
2414  int64_t pos = avio_tell(pb);
2415  int audio_profile = mov->iods_audio_profile;
2416  int video_profile = mov->iods_video_profile;
2417  for (i = 0; i < mov->nb_streams; i++) {
2418  if (mov->tracks[i].entry > 0) {
2419  has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
2420  has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
2421  }
2422  }
2423  if (audio_profile < 0)
2424  audio_profile = 0xFF - has_audio;
2425  if (video_profile < 0)
2426  video_profile = 0xFF - has_video;
2427  avio_wb32(pb, 0x0); /* size */
2428  ffio_wfourcc(pb, "iods");
2429  avio_wb32(pb, 0); /* version & flags */
2430  put_descr(pb, 0x10, 7);
2431  avio_wb16(pb, 0x004f);
2432  avio_w8(pb, 0xff);
2433  avio_w8(pb, 0xff);
2434  avio_w8(pb, audio_profile);
2435  avio_w8(pb, video_profile);
2436  avio_w8(pb, 0xff);
2437  return update_size(pb, pos);
2438 }
2439 
2440 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
2441 {
2442  avio_wb32(pb, 0x20); /* size */
2443  ffio_wfourcc(pb, "trex");
2444  avio_wb32(pb, 0); /* version & flags */
2445  avio_wb32(pb, track->track_id); /* track ID */
2446  avio_wb32(pb, 1); /* default sample description index */
2447  avio_wb32(pb, 0); /* default sample duration */
2448  avio_wb32(pb, 0); /* default sample size */
2449  avio_wb32(pb, 0); /* default sample flags */
2450  return 0;
2451 }
2452 
2454 {
2455  int64_t pos = avio_tell(pb);
2456  int i;
2457  avio_wb32(pb, 0x0); /* size */
2458  ffio_wfourcc(pb, "mvex");
2459  for (i = 0; i < mov->nb_streams; i++)
2460  mov_write_trex_tag(pb, &mov->tracks[i]);
2461  return update_size(pb, pos);
2462 }
2463 
2465 {
2466  int max_track_id = 1, i;
2467  int64_t max_track_len_temp, max_track_len = 0;
2468  int version;
2469 
2470  for (i = 0; i < mov->nb_streams; i++) {
2471  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
2472  max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
2473  MOV_TIMESCALE,
2474  mov->tracks[i].timescale,
2475  AV_ROUND_UP);
2476  if (max_track_len < max_track_len_temp)
2477  max_track_len = max_track_len_temp;
2478  if (max_track_id < mov->tracks[i].track_id)
2479  max_track_id = mov->tracks[i].track_id;
2480  }
2481  }
2482 
2483  version = max_track_len < UINT32_MAX ? 0 : 1;
2484  (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
2485  ffio_wfourcc(pb, "mvhd");
2486  avio_w8(pb, version);
2487  avio_wb24(pb, 0); /* flags */
2488  if (version == 1) {
2489  avio_wb64(pb, mov->time);
2490  avio_wb64(pb, mov->time);
2491  } else {
2492  avio_wb32(pb, mov->time); /* creation time */
2493  avio_wb32(pb, mov->time); /* modification time */
2494  }
2495  avio_wb32(pb, MOV_TIMESCALE);
2496  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
2497 
2498  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
2499  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
2500  avio_wb16(pb, 0); /* reserved */
2501  avio_wb32(pb, 0); /* reserved */
2502  avio_wb32(pb, 0); /* reserved */
2503 
2504  /* Matrix structure */
2505  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2506 
2507  avio_wb32(pb, 0); /* reserved (preview time) */
2508  avio_wb32(pb, 0); /* reserved (preview duration) */
2509  avio_wb32(pb, 0); /* reserved (poster time) */
2510  avio_wb32(pb, 0); /* reserved (selection time) */
2511  avio_wb32(pb, 0); /* reserved (selection duration) */
2512  avio_wb32(pb, 0); /* reserved (current time) */
2513  avio_wb32(pb, max_track_id + 1); /* Next track id */
2514  return 0x6c;
2515 }
2516 
2518  AVFormatContext *s)
2519 {
2520  avio_wb32(pb, 33); /* size */
2521  ffio_wfourcc(pb, "hdlr");
2522  avio_wb32(pb, 0);
2523  avio_wb32(pb, 0);
2524  ffio_wfourcc(pb, "mdir");
2525  ffio_wfourcc(pb, "appl");
2526  avio_wb32(pb, 0);
2527  avio_wb32(pb, 0);
2528  avio_w8(pb, 0);
2529  return 33;
2530 }
2531 
2532 /* helper function to write a data tag with the specified string as data */
2533 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
2534 {
2535  if (long_style) {
2536  int size = 16 + strlen(data);
2537  avio_wb32(pb, size); /* size */
2538  ffio_wfourcc(pb, "data");
2539  avio_wb32(pb, 1);
2540  avio_wb32(pb, 0);
2541  avio_write(pb, data, strlen(data));
2542  return size;
2543  } else {
2544  if (!lang)
2545  lang = ff_mov_iso639_to_lang("und", 1);
2546  avio_wb16(pb, strlen(data)); /* string length */
2547  avio_wb16(pb, lang);
2548  avio_write(pb, data, strlen(data));
2549  return strlen(data) + 4;
2550  }
2551 }
2552 
2553 static int mov_write_string_tag(AVIOContext *pb, const char *name,
2554  const char *value, int lang, int long_style)
2555 {
2556  int size = 0;
2557  if (value && value[0]) {
2558  int64_t pos = avio_tell(pb);
2559  avio_wb32(pb, 0); /* size */
2560  ffio_wfourcc(pb, name);
2561  mov_write_string_data_tag(pb, value, lang, long_style);
2562  size = update_size(pb, pos);
2563  }
2564  return size;
2565 }
2566 
2568  const char *name, const char *tag,
2569  int long_style)
2570 {
2571  int l, lang = 0, len, len2;
2572  AVDictionaryEntry *t, *t2 = NULL;
2573  char tag2[16];
2574 
2575  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2576  return 0;
2577 
2578  len = strlen(t->key);
2579  snprintf(tag2, sizeof(tag2), "%s-", tag);
2580  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
2581  len2 = strlen(t2->key);
2582  if (len2 == len + 4 && !strcmp(t->value, t2->value)
2583  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
2584  lang = l;
2585  break;
2586  }
2587  }
2588  return mov_write_string_tag(pb, name, t->value, lang, long_style);
2589 }
2590 
2591 /* iTunes bpm number */
2593 {
2594  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
2595  int size = 0, tmpo = t ? atoi(t->value) : 0;
2596  if (tmpo) {
2597  size = 26;
2598  avio_wb32(pb, size);
2599  ffio_wfourcc(pb, "tmpo");
2600  avio_wb32(pb, size-8); /* size */
2601  ffio_wfourcc(pb, "data");
2602  avio_wb32(pb, 0x15); //type specifier
2603  avio_wb32(pb, 0);
2604  avio_wb16(pb, tmpo); // data
2605  }
2606  return size;
2607 }
2608 
2609 /* iTunes track or disc number */
2611  AVFormatContext *s, int disc)
2612 {
2614  disc ? "disc" : "track",
2615  NULL, 0);
2616  int size = 0, track = t ? atoi(t->value) : 0;
2617  if (track) {
2618  int tracks = 0;
2619  char *slash = strchr(t->value, '/');
2620  if (slash)
2621  tracks = atoi(slash + 1);
2622  avio_wb32(pb, 32); /* size */
2623  ffio_wfourcc(pb, disc ? "disk" : "trkn");
2624  avio_wb32(pb, 24); /* size */
2625  ffio_wfourcc(pb, "data");
2626  avio_wb32(pb, 0); // 8 bytes empty
2627  avio_wb32(pb, 0);
2628  avio_wb16(pb, 0); // empty
2629  avio_wb16(pb, track); // track / disc number
2630  avio_wb16(pb, tracks); // total track / disc number
2631  avio_wb16(pb, 0); // empty
2632  size = 32;
2633  }
2634  return size;
2635 }
2636 
2638  const char *name, const char *tag,
2639  int len)
2640 {
2641  AVDictionaryEntry *t = NULL;
2642  uint8_t num;
2643  int size = 24 + len;
2644 
2645  if (len != 1 && len != 4)
2646  return -1;
2647 
2648  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2649  return 0;
2650  num = atoi(t->value);
2651 
2652  avio_wb32(pb, size);
2653  ffio_wfourcc(pb, name);
2654  avio_wb32(pb, size - 8);
2655  ffio_wfourcc(pb, "data");
2656  avio_wb32(pb, 0x15);
2657  avio_wb32(pb, 0);
2658  if (len==4) avio_wb32(pb, num);
2659  else avio_w8 (pb, num);
2660 
2661  return size;
2662 }
2663 
2664 /* iTunes meta data list */
2666  AVFormatContext *s)
2667 {
2668  int64_t pos = avio_tell(pb);
2669  avio_wb32(pb, 0); /* size */
2670  ffio_wfourcc(pb, "ilst");
2671  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
2672  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
2673  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
2674  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
2675  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
2676  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
2677  if (!mov->exact &&
2678  !mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
2679  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
2680  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
2681  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
2682  mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
2683  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
2684  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
2685  mov_write_string_metadata(s, pb, "desc", "description",1);
2686  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
2687  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
2688  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
2689  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
2690  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
2691  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
2692  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
2693  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
2694  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
2695  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
2696  mov_write_trkn_tag(pb, mov, s, 0); // track number
2697  mov_write_trkn_tag(pb, mov, s, 1); // disc number
2698  mov_write_tmpo_tag(pb, s);
2699  return update_size(pb, pos);
2700 }
2701 
2702 /* iTunes meta data tag */
2704  AVFormatContext *s)
2705 {
2706  int size = 0;
2707  int64_t pos = avio_tell(pb);
2708  avio_wb32(pb, 0); /* size */
2709  ffio_wfourcc(pb, "meta");
2710  avio_wb32(pb, 0);
2711  mov_write_itunes_hdlr_tag(pb, mov, s);
2712  mov_write_ilst_tag(pb, mov, s);
2713  size = update_size(pb, pos);
2714  return size;
2715 }
2716 
2718  const char *name, const char *key)
2719 {
2720  int len;
2721  AVDictionaryEntry *t;
2722 
2723  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
2724  return 0;
2725 
2726  len = strlen(t->value);
2727  if (len > 0) {
2728  int size = len + 8;
2729  avio_wb32(pb, size);
2730  ffio_wfourcc(pb, name);
2731  avio_write(pb, t->value, len);
2732  return size;
2733  }
2734  return 0;
2735 }
2736 
2737 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
2738 {
2739  int val;
2740  while (*b) {
2741  GET_UTF8(val, *b++, return -1;)
2742  avio_wb16(pb, val);
2743  }
2744  avio_wb16(pb, 0x00);
2745  return 0;
2746 }
2747 
2748 static uint16_t language_code(const char *str)
2749 {
2750  return (((str[0] - 0x60) & 0x1F) << 10) +
2751  (((str[1] - 0x60) & 0x1F) << 5) +
2752  (( str[2] - 0x60) & 0x1F);
2753 }
2754 
2756  const char *tag, const char *str)
2757 {
2758  int64_t pos = avio_tell(pb);
2759  AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
2760  if (!t || !utf8len(t->value))
2761  return 0;
2762  avio_wb32(pb, 0); /* size */
2763  ffio_wfourcc(pb, tag); /* type */
2764  avio_wb32(pb, 0); /* version + flags */
2765  if (!strcmp(tag, "yrrc"))
2766  avio_wb16(pb, atoi(t->value));
2767  else {
2768  avio_wb16(pb, language_code("eng")); /* language */
2769  avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
2770  if (!strcmp(tag, "albm") &&
2771  (t = av_dict_get(s->metadata, "track", NULL, 0)))
2772  avio_w8(pb, atoi(t->value));
2773  }
2774  return update_size(pb, pos);
2775 }
2776 
2778 {
2779  int64_t pos = avio_tell(pb);
2780  int i, nb_chapters = FFMIN(s->nb_chapters, 255);
2781 
2782  avio_wb32(pb, 0); // size
2783  ffio_wfourcc(pb, "chpl");
2784  avio_wb32(pb, 0x01000000); // version + flags
2785  avio_wb32(pb, 0); // unknown
2786  avio_w8(pb, nb_chapters);
2787 
2788  for (i = 0; i < nb_chapters; i++) {
2789  AVChapter *c = s->chapters[i];
2790  AVDictionaryEntry *t;
2791  avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
2792 
2793  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
2794  int len = FFMIN(strlen(t->value), 255);
2795  avio_w8(pb, len);
2796  avio_write(pb, t->value, len);
2797  } else
2798  avio_w8(pb, 0);
2799  }
2800  return update_size(pb, pos);
2801 }
2802 
2804  AVFormatContext *s)
2805 {
2806  AVIOContext *pb_buf;
2807  int ret, size;
2808  uint8_t *buf;
2809 
2810  ret = avio_open_dyn_buf(&pb_buf);
2811  if (ret < 0)
2812  return ret;
2813 
2814  if (mov->mode & MODE_3GP) {
2815  mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
2816  mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
2817  mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
2818  mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
2819  mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
2820  mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
2821  mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
2822  mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
2823  } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
2824  mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
2825  mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
2826  mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
2827  mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
2828  mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
2829  mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
2830  // currently ignored by mov.c
2831  mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
2832  // add support for libquicktime, this atom is also actually read by mov.c
2833  mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
2834  mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
2835  mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
2836  mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
2837  } else {
2838  /* iTunes meta data */
2839  mov_write_meta_tag(pb_buf, mov, s);
2840  }
2841 
2842  if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
2843  mov_write_chpl_tag(pb_buf, s);
2844 
2845  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2846  avio_wb32(pb, size + 8);
2847  ffio_wfourcc(pb, "udta");
2848  avio_write(pb, buf, size);
2849  }
2850  av_free(buf);
2851 
2852  return 0;
2853 }
2854 
2856  const char *str, const char *lang, int type)
2857 {
2858  int len = utf8len(str) + 1;
2859  if (len <= 0)
2860  return;
2861  avio_wb16(pb, len * 2 + 10); /* size */
2862  avio_wb32(pb, type); /* type */
2863  avio_wb16(pb, language_code(lang)); /* language */
2864  avio_wb16(pb, 0x01); /* ? */
2865  ascii_to_wc(pb, str);
2866 }
2867 
2869 {
2870  MOVMuxContext *mov = s->priv_data;
2871  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
2872  int64_t pos, pos2;
2873 
2874  if (title) {
2875  pos = avio_tell(pb);
2876  avio_wb32(pb, 0); /* size placeholder*/
2877  ffio_wfourcc(pb, "uuid");
2878  ffio_wfourcc(pb, "USMT");
2879  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
2880  avio_wb32(pb, 0xbb88695c);
2881  avio_wb32(pb, 0xfac9c740);
2882 
2883  pos2 = avio_tell(pb);
2884  avio_wb32(pb, 0); /* size placeholder*/
2885  ffio_wfourcc(pb, "MTDT");
2886  avio_wb16(pb, 4);
2887 
2888  // ?
2889  avio_wb16(pb, 0x0C); /* size */
2890  avio_wb32(pb, 0x0B); /* type */
2891  avio_wb16(pb, language_code("und")); /* language */
2892  avio_wb16(pb, 0x0); /* ? */
2893  avio_wb16(pb, 0x021C); /* data */
2894 
2895  if (!mov->exact)
2896  mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
2897  mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
2898  mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
2899 
2900  update_size(pb, pos2);
2901  return update_size(pb, pos);
2902  }
2903 
2904  return 0;
2905 }
2906 
2907 static void build_chunks(MOVTrack *trk)
2908 {
2909  int i;
2910  MOVIentry *chunk = &trk->cluster[0];
2911  uint64_t chunkSize = chunk->size;
2912  chunk->chunkNum = 1;
2913  if (trk->chunkCount)
2914  return;
2915  trk->chunkCount = 1;
2916  for (i = 1; i<trk->entry; i++){
2917  if (chunk->pos + chunkSize == trk->cluster[i].pos &&
2918  chunkSize + trk->cluster[i].size < (1<<20)){
2919  chunkSize += trk->cluster[i].size;
2920  chunk->samples_in_chunk += trk->cluster[i].entries;
2921  } else {
2922  trk->cluster[i].chunkNum = chunk->chunkNum+1;
2923  chunk=&trk->cluster[i];
2924  chunkSize = chunk->size;
2925  trk->chunkCount++;
2926  }
2927  }
2928 }
2929 
2931  AVFormatContext *s)
2932 {
2933  int i;
2934  int64_t pos = avio_tell(pb);
2935  avio_wb32(pb, 0); /* size placeholder*/
2936  ffio_wfourcc(pb, "moov");
2937 
2938  for (i = 0; i < mov->nb_streams; i++) {
2939  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
2940  continue;
2941 
2942  mov->tracks[i].time = mov->time;
2943  mov->tracks[i].track_id = i + 1;
2944 
2945  if (mov->tracks[i].entry)
2946  build_chunks(&mov->tracks[i]);
2947  }
2948 
2949  if (mov->chapter_track)
2950  for (i = 0; i < s->nb_streams; i++) {
2951  mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
2952  mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
2953  }
2954  for (i = 0; i < mov->nb_streams; i++) {
2955  if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
2956  mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
2957  mov->tracks[i].tref_id =
2958  mov->tracks[mov->tracks[i].src_track].track_id;
2959  }
2960  }
2961  for (i = 0; i < mov->nb_streams; i++) {
2962  if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
2963  int src_trk = mov->tracks[i].src_track;
2964  mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
2965  mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
2966  //src_trk may have a different timescale than the tmcd track
2967  mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
2968  mov->tracks[i].timescale,
2969  mov->tracks[src_trk].timescale);
2970  }
2971  }
2972 
2973  mov_write_mvhd_tag(pb, mov);
2974  if (mov->mode != MODE_MOV && !mov->iods_skip)
2975  mov_write_iods_tag(pb, mov);
2976  for (i = 0; i < mov->nb_streams; i++) {
2977  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
2978  mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
2979  }
2980  }
2981  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2982  mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
2983 
2984  if (mov->mode == MODE_PSP)
2985  mov_write_uuidusmt_tag(pb, s);
2986  else
2987  mov_write_udta_tag(pb, mov, s);
2988 
2989  return update_size(pb, pos);
2990 }
2991 
2992 static void param_write_int(AVIOContext *pb, const char *name, int value)
2993 {
2994  avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
2995 }
2996 
2997 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
2998 {
2999  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
3000 }
3001 
3002 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
3003 {
3004  char buf[150];
3005  len = FFMIN(sizeof(buf) / 2 - 1, len);
3006  ff_data_to_hex(buf, value, len, 0);
3007  buf[2 * len] = '\0';
3008  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
3009 }
3010 
3012 {
3013  int64_t pos = avio_tell(pb);
3014  int i;
3015  static const uint8_t uuid[] = {
3016  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3017  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3018  };
3019 
3020  avio_wb32(pb, 0);
3021  ffio_wfourcc(pb, "uuid");
3022  avio_write(pb, uuid, sizeof(uuid));
3023  avio_wb32(pb, 0);
3024 
3025  avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
3026  avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
3027  avio_printf(pb, "<head>\n");
3028  if (!mov->exact)
3029  avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
3031  avio_printf(pb, "</head>\n");
3032  avio_printf(pb, "<body>\n");
3033  avio_printf(pb, "<switch>\n");
3034  for (i = 0; i < mov->nb_streams; i++) {
3035  MOVTrack *track = &mov->tracks[i];
3036  const char *type;
3037  /* track->track_id is initialized in write_moov, and thus isn't known
3038  * here yet */
3039  int track_id = i + 1;
3040 
3041  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3042  type = "video";
3043  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
3044  type = "audio";
3045  } else {
3046  continue;
3047  }
3048  avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
3049  track->enc->bit_rate);
3050  param_write_int(pb, "systemBitrate", track->enc->bit_rate);
3051  param_write_int(pb, "trackID", track_id);
3052  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3053  if (track->enc->codec_id == AV_CODEC_ID_H264) {
3054  uint8_t *ptr;
3055  int size = track->enc->extradata_size;
3056  if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
3057  &size)) {
3058  param_write_hex(pb, "CodecPrivateData",
3059  ptr ? ptr : track->enc->extradata,
3060  size);
3061  av_free(ptr);
3062  }
3063  param_write_string(pb, "FourCC", "H264");
3064  } else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
3065  param_write_string(pb, "FourCC", "WVC1");
3066  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3067  track->enc->extradata_size);
3068  }
3069  param_write_int(pb, "MaxWidth", track->enc->width);
3070  param_write_int(pb, "MaxHeight", track->enc->height);
3071  param_write_int(pb, "DisplayWidth", track->enc->width);
3072  param_write_int(pb, "DisplayHeight", track->enc->height);
3073  } else {
3074  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
3075  param_write_string(pb, "FourCC", "AACL");
3076  } else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
3077  param_write_string(pb, "FourCC", "WMAP");
3078  }
3079  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3080  track->enc->extradata_size);
3082  track->enc->codec_id));
3083  param_write_int(pb, "Channels", track->enc->channels);
3084  param_write_int(pb, "SamplingRate", track->enc->sample_rate);
3085  param_write_int(pb, "BitsPerSample", 16);
3086  param_write_int(pb, "PacketSize", track->enc->block_align ?
3087  track->enc->block_align : 4);
3088  }
3089  avio_printf(pb, "</%s>\n", type);
3090  }
3091  avio_printf(pb, "</switch>\n");
3092  avio_printf(pb, "</body>\n");
3093  avio_printf(pb, "</smil>\n");
3094 
3095  return update_size(pb, pos);
3096 }
3097 
3099 {
3100  avio_wb32(pb, 16);
3101  ffio_wfourcc(pb, "mfhd");
3102  avio_wb32(pb, 0);
3103  avio_wb32(pb, mov->fragments);
3104  return 0;
3105 }
3106 
3108  MOVTrack *track, int64_t moof_offset)
3109 {
3110  int64_t pos = avio_tell(pb);
3113  if (!track->entry) {
3114  flags |= MOV_TFHD_DURATION_IS_EMPTY;
3115  } else {
3116  flags |= MOV_TFHD_DEFAULT_FLAGS;
3117  }
3119  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
3120 
3121  /* Don't set a default sample size, the silverlight player refuses
3122  * to play files with that set. Don't set a default sample duration,
3123  * WMP freaks out if it is set. Don't set a base data offset, PIFF
3124  * file format says it MUST NOT be set. */
3125  if (track->mode == MODE_ISM)
3128 
3129  avio_wb32(pb, 0); /* size placeholder */
3130  ffio_wfourcc(pb, "tfhd");
3131  avio_w8(pb, 0); /* version */
3132  avio_wb24(pb, flags);
3133 
3134  avio_wb32(pb, track->track_id); /* track-id */
3135  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
3136  avio_wb64(pb, moof_offset);
3137  if (flags & MOV_TFHD_DEFAULT_DURATION) {
3138  track->default_duration = get_cluster_duration(track, 0);
3139  avio_wb32(pb, track->default_duration);
3140  }
3141  if (flags & MOV_TFHD_DEFAULT_SIZE) {
3142  track->default_size = track->entry ? track->cluster[0].size : 1;
3143  avio_wb32(pb, track->default_size);
3144  } else
3145  track->default_size = -1;
3146 
3147  if (flags & MOV_TFHD_DEFAULT_FLAGS) {
3148  track->default_sample_flags =
3149  track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
3152  avio_wb32(pb, track->default_sample_flags);
3153  }
3154 
3155  return update_size(pb, pos);
3156 }
3157 
3158 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
3159 {
3162 }
3163 
3165  MOVTrack *track, int moof_size)
3166 {
3167  int64_t pos = avio_tell(pb);
3168  uint32_t flags = MOV_TRUN_DATA_OFFSET;
3169  int i;
3170 
3171  for (i = 0; i < track->entry; i++) {
3172  if (get_cluster_duration(track, i) != track->default_duration)
3173  flags |= MOV_TRUN_SAMPLE_DURATION;
3174  if (track->cluster[i].size != track->default_size)
3175  flags |= MOV_TRUN_SAMPLE_SIZE;
3176  if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
3177  flags |= MOV_TRUN_SAMPLE_FLAGS;
3178  }
3179  if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
3180  flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
3181  if (track->flags & MOV_TRACK_CTTS)
3182  flags |= MOV_TRUN_SAMPLE_CTS;
3183 
3184  avio_wb32(pb, 0); /* size placeholder */
3185  ffio_wfourcc(pb, "trun");
3186  avio_w8(pb, 0); /* version */
3187  avio_wb24(pb, flags);
3188 
3189  avio_wb32(pb, track->entry); /* sample count */
3190  if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
3191  !(mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) &&
3192  track->track_id != 1)
3193  avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
3194  else
3195  avio_wb32(pb, moof_size + 8 + track->data_offset +
3196  track->cluster[0].pos); /* data offset */
3197  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
3198  avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
3199 
3200  for (i = 0; i < track->entry; i++) {
3201  if (flags & MOV_TRUN_SAMPLE_DURATION)
3202  avio_wb32(pb, get_cluster_duration(track, i));
3203  if (flags & MOV_TRUN_SAMPLE_SIZE)
3204  avio_wb32(pb, track->cluster[i].size);
3205  if (flags & MOV_TRUN_SAMPLE_FLAGS)
3206  avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
3207  if (flags & MOV_TRUN_SAMPLE_CTS)
3208  avio_wb32(pb, track->cluster[i].cts);
3209  }
3210 
3211  return update_size(pb, pos);
3212 }
3213 
3214 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
3215 {
3216  int64_t pos = avio_tell(pb);
3217  static const uint8_t uuid[] = {
3218  0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
3219  0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
3220  };
3221 
3222  avio_wb32(pb, 0); /* size placeholder */
3223  ffio_wfourcc(pb, "uuid");
3224  avio_write(pb, uuid, sizeof(uuid));
3225  avio_w8(pb, 1);
3226  avio_wb24(pb, 0);
3227  avio_wb64(pb, track->frag_start);
3228  avio_wb64(pb, track->start_dts + track->track_duration -
3229  track->cluster[0].dts);
3230 
3231  return update_size(pb, pos);
3232 }
3233 
3235  MOVTrack *track, int entry)
3236 {
3237  int n = track->nb_frag_info - 1 - entry, i;
3238  int size = 8 + 16 + 4 + 1 + 16*n;
3239  static const uint8_t uuid[] = {
3240  0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
3241  0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
3242  };
3243 
3244  if (entry < 0)
3245  return 0;
3246 
3247  avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
3248  avio_wb32(pb, size);
3249  ffio_wfourcc(pb, "uuid");
3250  avio_write(pb, uuid, sizeof(uuid));
3251  avio_w8(pb, 1);
3252  avio_wb24(pb, 0);
3253  avio_w8(pb, n);
3254  for (i = 0; i < n; i++) {
3255  int index = entry + 1 + i;
3256  avio_wb64(pb, track->frag_info[index].time);
3257  avio_wb64(pb, track->frag_info[index].duration);
3258  }
3259  if (n < mov->ism_lookahead) {
3260  int free_size = 16 * (mov->ism_lookahead - n);
3261  avio_wb32(pb, free_size);
3262  ffio_wfourcc(pb, "free");
3263  ffio_fill(pb, 0, free_size - 8);
3264  }
3265 
3266  return 0;
3267 }
3268 
3270  MOVTrack *track)
3271 {
3272  int64_t pos = avio_tell(pb);
3273  int i;
3274  for (i = 0; i < mov->ism_lookahead; i++) {
3275  /* Update the tfrf tag for the last ism_lookahead fragments,
3276  * nb_frag_info - 1 is the next fragment to be written. */
3277  mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
3278  }
3279  avio_seek(pb, pos, SEEK_SET);
3280  return 0;
3281 }
3282 
3283 static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
3284 {
3285  int64_t pos = avio_tell(pb);
3286 
3287  avio_wb32(pb, 0); /* size */
3288  ffio_wfourcc(pb, "tfdt");
3289  avio_w8(pb, 1); /* version */
3290  avio_wb24(pb, 0);
3291  avio_wb64(pb, track->frag_start);
3292  return update_size(pb, pos);
3293 }
3294 
3296  MOVTrack *track, int64_t moof_offset,
3297  int moof_size)
3298 {
3299  int64_t pos = avio_tell(pb);
3300  avio_wb32(pb, 0); /* size placeholder */
3301  ffio_wfourcc(pb, "traf");
3302 
3303  mov_write_tfhd_tag(pb, mov, track, moof_offset);
3304  mov_write_tfdt_tag(pb, track);
3305  mov_write_trun_tag(pb, mov, track, moof_size);
3306  if (mov->mode == MODE_ISM) {
3307  mov_write_tfxd_tag(pb, track);
3308 
3309  if (mov->ism_lookahead) {
3310  int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
3311 
3312  track->tfrf_offset = avio_tell(pb);
3313  avio_wb32(pb, 8 + size);
3314  ffio_wfourcc(pb, "free");
3315  for (i = 0; i < size; i++)
3316  avio_w8(pb, 0);
3317  }
3318  }
3319 
3320  return update_size(pb, pos);
3321 }
3322 
3324  int tracks, int moof_size)
3325 {
3326  int64_t pos = avio_tell(pb);
3327  int i;
3328 
3329  avio_wb32(pb, 0); /* size placeholder */
3330  ffio_wfourcc(pb, "moof");
3331 
3332  mov_write_mfhd_tag(pb, mov);
3333  for (i = 0; i < mov->nb_streams; i++) {
3334  MOVTrack *track = &mov->tracks[i];
3335  if (tracks >= 0 && i != tracks)
3336  continue;
3337  if (!track->entry)
3338  continue;
3339  mov_write_traf_tag(pb, mov, track, pos, moof_size);
3340  }
3341 
3342  return update_size(pb, pos);
3343 }
3344 
3345 static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks)
3346 {
3347  AVIOContext *avio_buf;
3348  int ret, moof_size;
3349 
3350  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
3351  return ret;
3352  mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
3353  moof_size = ffio_close_null_buf(avio_buf);
3354  return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
3355 }
3356 
3357 static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
3358 {
3359  int64_t pos = avio_tell(pb);
3360  int i;
3361 
3362  avio_wb32(pb, 0); /* size placeholder */
3363  ffio_wfourcc(pb, "tfra");
3364  avio_w8(pb, 1); /* version */
3365  avio_wb24(pb, 0);
3366 
3367  avio_wb32(pb, track->track_id);
3368  avio_wb32(pb, 0); /* length of traf/trun/sample num */
3369  avio_wb32(pb, track->nb_frag_info);
3370  for (i = 0; i < track->nb_frag_info; i++) {
3371  avio_wb64(pb, track->frag_info[i].time);
3372  avio_wb64(pb, track->frag_info[i].offset);
3373  avio_w8(pb, 1); /* traf number */
3374  avio_w8(pb, 1); /* trun number */
3375  avio_w8(pb, 1); /* sample number */
3376  }
3377 
3378  return update_size(pb, pos);
3379 }
3380 
3382 {
3383  int64_t pos = avio_tell(pb);
3384  int i;
3385 
3386  avio_wb32(pb, 0); /* size placeholder */
3387  ffio_wfourcc(pb, "mfra");
3388  /* An empty mfra atom is enough to indicate to the publishing point that
3389  * the stream has ended. */
3390  if (mov->flags & FF_MOV_FLAG_ISML)
3391  return update_size(pb, pos);
3392 
3393  for (i = 0; i < mov->nb_streams; i++) {
3394  MOVTrack *track = &mov->tracks[i];
3395  if (track->nb_frag_info)
3396  mov_write_tfra_tag(pb, track);
3397  }
3398 
3399  avio_wb32(pb, 16);
3400  ffio_wfourcc(pb, "mfro");
3401  avio_wb32(pb, 0); /* version + flags */
3402  avio_wb32(pb, avio_tell(pb) + 4 - pos);
3403 
3404  return update_size(pb, pos);
3405 }
3406 
3408 {
3409  avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
3410  ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
3411 
3412  mov->mdat_pos = avio_tell(pb);
3413  avio_wb32(pb, 0); /* size placeholder*/
3414  ffio_wfourcc(pb, "mdat");
3415  return 0;
3416 }
3417 
3418 /* TODO: This needs to be more general */
3420 {
3421  MOVMuxContext *mov = s->priv_data;
3422  int64_t pos = avio_tell(pb);
3423  int has_h264 = 0, has_video = 0;
3424  int minor = 0x200;
3425  int i;
3426 
3427  for (i = 0; i < s->nb_streams; i++) {
3428  AVStream *st = s->streams[i];
3429  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3430  has_video = 1;
3431  if (st->codec->codec_id == AV_CODEC_ID_H264)
3432  has_h264 = 1;
3433  }
3434 
3435  avio_wb32(pb, 0); /* size */
3436  ffio_wfourcc(pb, "ftyp");
3437 
3438  if (mov->major_brand && strlen(mov->major_brand) >= 4)
3439  ffio_wfourcc(pb, mov->major_brand);
3440  else if (mov->mode == MODE_3GP) {
3441  ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
3442  minor = has_h264 ? 0x100 : 0x200;
3443  } else if (mov->mode & MODE_3G2) {
3444  ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
3445  minor = has_h264 ? 0x20000 : 0x10000;
3446  } else if (mov->mode == MODE_PSP)
3447  ffio_wfourcc(pb, "MSNV");
3448  else if (mov->mode == MODE_MP4)
3449  ffio_wfourcc(pb, "isom");
3450  else if (mov->mode == MODE_IPOD)
3451  ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
3452  else if (mov->mode == MODE_ISM)
3453  ffio_wfourcc(pb, "isml");
3454  else if (mov->mode == MODE_F4V)
3455  ffio_wfourcc(pb, "f4v ");
3456  else
3457  ffio_wfourcc(pb, "qt ");
3458 
3459  avio_wb32(pb, minor);
3460 
3461  if (mov->mode == MODE_MOV)
3462  ffio_wfourcc(pb, "qt ");
3463  else if (mov->mode == MODE_ISM) {
3464  ffio_wfourcc(pb, "piff");
3465  ffio_wfourcc(pb, "iso2");
3466  } else {
3467  ffio_wfourcc(pb, "isom");
3468  ffio_wfourcc(pb, "iso2");
3469  if (has_h264)
3470  ffio_wfourcc(pb, "avc1");
3471  }
3472 
3473  if (mov->mode == MODE_3GP)
3474  ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
3475  else if (mov->mode & MODE_3G2)
3476  ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
3477  else if (mov->mode == MODE_PSP)
3478  ffio_wfourcc(pb, "MSNV");
3479  else if (mov->mode == MODE_MP4)
3480  ffio_wfourcc(pb, "mp41");
3481  return update_size(pb, pos);
3482 }
3483 
3485 {
3486  AVStream *video_st = s->streams[0];
3487  AVCodecContext *video_codec = s->streams[0]->codec;
3488  AVCodecContext *audio_codec = s->streams[1]->codec;
3489  int audio_rate = audio_codec->sample_rate;
3490  // TODO: should be avg_frame_rate
3491  int frame_rate = ((video_st->time_base.den) * (0x10000)) / (video_st->time_base.num);
3492  int audio_kbitrate = audio_codec->bit_rate / 1000;
3493  int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
3494 
3495  avio_wb32(pb, 0x94); /* size */
3496  ffio_wfourcc(pb, "uuid");
3497  ffio_wfourcc(pb, "PROF");
3498 
3499  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
3500  avio_wb32(pb, 0xbb88695c);
3501  avio_wb32(pb, 0xfac9c740);
3502 
3503  avio_wb32(pb, 0x0); /* ? */
3504  avio_wb32(pb, 0x3); /* 3 sections ? */
3505 
3506  avio_wb32(pb, 0x14); /* size */
3507  ffio_wfourcc(pb, "FPRF");
3508  avio_wb32(pb, 0x0); /* ? */
3509  avio_wb32(pb, 0x0); /* ? */
3510  avio_wb32(pb, 0x0); /* ? */
3511 
3512  avio_wb32(pb, 0x2c); /* size */
3513  ffio_wfourcc(pb, "APRF"); /* audio */
3514  avio_wb32(pb, 0x0);
3515  avio_wb32(pb, 0x2); /* TrackID */
3516  ffio_wfourcc(pb, "mp4a");
3517  avio_wb32(pb, 0x20f);
3518  avio_wb32(pb, 0x0);
3519  avio_wb32(pb, audio_kbitrate);
3520  avio_wb32(pb, audio_kbitrate);
3521  avio_wb32(pb, audio_rate);
3522  avio_wb32(pb, audio_codec->channels);
3523 
3524  avio_wb32(pb, 0x34); /* size */
3525  ffio_wfourcc(pb, "VPRF"); /* video */
3526  avio_wb32(pb, 0x0);
3527  avio_wb32(pb, 0x1); /* TrackID */
3528  if (video_codec->codec_id == AV_CODEC_ID_H264) {
3529  ffio_wfourcc(pb, "avc1");
3530  avio_wb16(pb, 0x014D);
3531  avio_wb16(pb, 0x0015);
3532  } else {
3533  ffio_wfourcc(pb, "mp4v");
3534  avio_wb16(pb, 0x0000);
3535  avio_wb16(pb, 0x0103);
3536  }
3537  avio_wb32(pb, 0x0);
3538  avio_wb32(pb, video_kbitrate);
3539  avio_wb32(pb, video_kbitrate);
3540  avio_wb32(pb, frame_rate);
3541  avio_wb32(pb, frame_rate);
3542  avio_wb16(pb, video_codec->width);
3543  avio_wb16(pb, video_codec->height);
3544  avio_wb32(pb, 0x010001); /* ? */
3545 }
3546 
3547 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
3548 {
3549  uint32_t c = -1;
3550  int i, closed_gop = 0;
3551 
3552  for (i = 0; i < pkt->size - 4; i++) {
3553  c = (c << 8) + pkt->data[i];
3554  if (c == 0x1b8) { // gop
3555  closed_gop = pkt->data[i + 4] >> 6 & 0x01;
3556  } else if (c == 0x100) { // pic
3557  int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
3558  if (!temp_ref || closed_gop) // I picture is not reordered
3559  *flags = MOV_SYNC_SAMPLE;
3560  else
3561  *flags = MOV_PARTIAL_SYNC_SAMPLE;
3562  break;
3563  }
3564  }
3565  return 0;
3566 }
3567 
3568 static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
3569 {
3570  const uint8_t *start, *next, *end = pkt->data + pkt->size;
3571  int seq = 0, entry = 0;
3572  int key = pkt->flags & AV_PKT_FLAG_KEY;
3573  start = find_next_marker(pkt->data, end);
3574  for (next = start; next < end; start = next) {
3575  next = find_next_marker(start + 4, end);
3576  switch (AV_RB32(start)) {
3577  case VC1_CODE_SEQHDR:
3578  seq = 1;
3579  break;
3580  case VC1_CODE_ENTRYPOINT:
3581  entry = 1;
3582  break;
3583  case VC1_CODE_SLICE:
3584  trk->vc1_info.slices = 1;
3585  break;
3586  }
3587  }
3588  if (!trk->entry && !fragment) {
3589  /* First packet in first fragment */
3590  trk->vc1_info.first_packet_seq = seq;
3591  trk->vc1_info.first_packet_entry = entry;
3592  } else if ((seq && !trk->vc1_info.packet_seq) ||
3593  (entry && !trk->vc1_info.packet_entry)) {
3594  int i;
3595  for (i = 0; i < trk->entry; i++)
3596  trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
3597  trk->has_keyframes = 0;
3598  if (seq)
3599  trk->vc1_info.packet_seq = 1;
3600  if (entry)
3601  trk->vc1_info.packet_entry = 1;
3602  if (!fragment) {
3603  /* First fragment */
3604  if ((!seq || trk->vc1_info.first_packet_seq) &&
3605  (!entry || trk->vc1_info.first_packet_entry)) {
3606  /* First packet had the same headers as this one, readd the
3607  * sync sample flag. */
3608  trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
3609  trk->has_keyframes = 1;
3610  }
3611  }
3612  }
3613  if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
3614  key = seq && entry;
3615  else if (trk->vc1_info.packet_seq)
3616  key = seq;
3617  else if (trk->vc1_info.packet_entry)
3618  key = entry;
3619  if (key) {
3620  trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
3621  trk->has_keyframes++;
3622  }
3623 }
3624 
3626 {
3627  MOVMuxContext *mov = s->priv_data;
3628  int i, first_track = -1;
3629  int64_t mdat_size = 0;
3630 
3631  if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
3632  return 0;
3633 
3634  if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
3635  int64_t pos = avio_tell(s->pb);
3636  uint8_t *buf;
3637  int buf_size, moov_size;
3638 
3639  for (i = 0; i < mov->nb_streams; i++)
3640  if (!mov->tracks[i].entry)
3641  break;
3642  /* Don't write the initial moov unless all tracks have data */
3643  if (i < mov->nb_streams)
3644  return 0;
3645 
3646  moov_size = get_moov_size(s);
3647  for (i = 0; i < mov->nb_streams; i++)
3648  mov->tracks[i].data_offset = pos + moov_size + 8;
3649 
3650  mov_write_moov_tag(s->pb, mov, s);
3651 
3652  buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
3653  mov->mdat_buf = NULL;
3654  avio_wb32(s->pb, buf_size + 8);
3655  ffio_wfourcc(s->pb, "mdat");
3656  avio_write(s->pb, buf, buf_size);
3657  av_free(buf);
3658 
3659  mov->fragments++;
3660  mov->mdat_size = 0;
3661  for (i = 0; i < mov->nb_streams; i++) {
3662  if (mov->tracks[i].entry)
3663  mov->tracks[i].frag_start += mov->tracks[i].start_dts +
3664  mov->tracks[i].track_duration -
3665  mov->tracks[i].cluster[0].dts;
3666  mov->tracks[i].entry = 0;
3667  }
3668  avio_flush(s->pb);
3669  return 0;
3670  }
3671 
3672  for (i = 0; i < mov->nb_streams; i++) {
3673  MOVTrack *track = &mov->tracks[i];
3674  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
3675  track->data_offset = 0;
3676  else
3677  track->data_offset = mdat_size;
3678  if (!track->mdat_buf)
3679  continue;
3680  mdat_size += avio_tell(track->mdat_buf);
3681  if (first_track < 0)
3682  first_track = i;
3683  }
3684 
3685  if (!mdat_size)
3686  return 0;
3687 
3688  for (i = 0; i < mov->nb_streams; i++) {
3689  MOVTrack *track = &mov->tracks[i];
3690  int buf_size, write_moof = 1, moof_tracks = -1;
3691  uint8_t *buf;
3692  int64_t duration = 0;
3693 
3694  if (track->entry)
3695  duration = track->start_dts + track->track_duration -
3696  track->cluster[0].dts;
3697  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
3698  if (!track->mdat_buf)
3699  continue;
3700  mdat_size = avio_tell(track->mdat_buf);
3701  moof_tracks = i;
3702  } else {
3703  write_moof = i == first_track;
3704  }
3705 
3706  if (write_moof) {
3707  MOVFragmentInfo *info;
3708  avio_flush(s->pb);
3709  track->nb_frag_info++;
3710  if (track->nb_frag_info >= track->frag_info_capacity) {
3711  unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
3712  if (av_reallocp_array(&track->frag_info,
3713  new_capacity,
3714  sizeof(*track->frag_info)))
3715  return AVERROR(ENOMEM);
3716  track->frag_info_capacity = new_capacity;
3717  }
3718  info = &track->frag_info[track->nb_frag_info - 1];
3719  info->offset = avio_tell(s->pb);
3720  info->time = track->frag_start;
3721  info->duration = duration;
3722  mov_write_tfrf_tags(s->pb, mov, track);
3723 
3724  mov_write_moof_tag(s->pb, mov, moof_tracks);
3725  info->tfrf_offset = track->tfrf_offset;
3726  mov->fragments++;
3727 
3728  avio_wb32(s->pb, mdat_size + 8);
3729  ffio_wfourcc(s->pb, "mdat");
3730  }
3731 
3732  if (track->entry)
3733  track->frag_start += duration;
3734  track->entry = 0;
3735  if (!track->mdat_buf)
3736  continue;
3737  buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
3738  track->mdat_buf = NULL;
3739 
3740  avio_write(s->pb, buf, buf_size);
3741  av_free(buf);
3742  }
3743 
3744  mov->mdat_size = 0;
3745 
3746  avio_flush(s->pb);
3747  return 0;
3748 }
3749 
3751 {
3752  MOVMuxContext *mov = s->priv_data;
3753  AVIOContext *pb = s->pb;
3754  MOVTrack *trk = &mov->tracks[pkt->stream_index];
3755  AVCodecContext *enc = trk->enc;
3756  unsigned int samples_in_chunk = 0;
3757  int size = pkt->size;
3758  uint8_t *reformatted_data = NULL;
3759 
3760  if (trk->entry) {
3761  int64_t duration = pkt->dts - trk->cluster[trk->entry - 1].dts;
3762  if (duration < 0 || duration > INT_MAX) {
3763  av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",
3764  duration, pkt->dts
3765  );
3766 
3767  pkt->dts = trk->cluster[trk->entry - 1].dts + 1;
3768  pkt->pts = AV_NOPTS_VALUE;
3769  }
3770  if (pkt->duration < 0) {
3771  av_log(s, AV_LOG_ERROR, "Application provided duration: %d is invalid\n", pkt->duration);
3772  return AVERROR(EINVAL);
3773  }
3774  }
3775  if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
3776  int ret;
3777  if (mov->fragments > 0) {
3778  if (!trk->mdat_buf) {
3779  if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
3780  return ret;
3781  }
3782  pb = trk->mdat_buf;
3783  } else {
3784  if (!mov->mdat_buf) {
3785  if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
3786  return ret;
3787  }
3788  pb = mov->mdat_buf;
3789  }
3790  }
3791 
3792  if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
3793  /* We must find out how many AMR blocks there are in one packet */
3794  static uint16_t packed_size[16] =
3795  {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
3796  int len = 0;
3797 
3798  while (len < size && samples_in_chunk < 100) {
3799  len += packed_size[(pkt->data[len] >> 3) & 0x0F];
3800  samples_in_chunk++;
3801  }
3802  if (samples_in_chunk > 1) {
3803  av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
3804  return -1;
3805  }
3806  } else if (enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
3808  samples_in_chunk = enc->frame_size;
3809  } else if (trk->sample_size)
3810  samples_in_chunk = size / trk->sample_size;
3811  else
3812  samples_in_chunk = 1;
3813 
3814  /* copy extradata if it exists */
3815  if (trk->vos_len == 0 && enc->extradata_size > 0 && !TAG_IS_AVCI(trk->tag)) {
3816  trk->vos_len = enc->extradata_size;
3817  trk->vos_data = av_malloc(trk->vos_len);
3818  memcpy(trk->vos_data, enc->extradata, trk->vos_len);
3819  }
3820 
3821  if (enc->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
3822  (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
3823  if (!s->streams[pkt->stream_index]->nb_frames) {
3824  av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
3825  "use the audio bitstream filter 'aac_adtstoasc' to fix it "
3826  "('-bsf:a aac_adtstoasc' option with ffmpeg)\n");
3827  return -1;
3828  }
3829  av_log(s, AV_LOG_WARNING, "aac bitstream error\n");
3830  }
3831  if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {
3832  /* from x264 or from bytestream h264 */
3833  /* nal reformating needed */
3834  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
3835  ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
3836  &size);
3837  avio_write(pb, reformatted_data, size);
3838  } else {
3839  size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
3840  }
3841  } else if (enc->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
3842  (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
3843  /* extradata is Annex B, assume the bitstream is too and convert it */
3844  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
3845  ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
3846  avio_write(pb, reformatted_data, size);
3847  } else {
3848  size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
3849  }
3850  } else if (enc->codec_id == AV_CODEC_ID_EAC3) {
3851  size = handle_eac3(mov, pkt, trk);
3852  if (size < 0)
3853  return size;
3854  else if (!size)
3855  goto end;
3856  avio_write(pb, pkt->data, size);
3857  } else {
3858  avio_write(pb, pkt->data, size);
3859  }
3860 
3861  if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
3862  enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
3863  /* copy frame to create needed atoms */
3864  trk->vos_len = size;
3865  trk->vos_data = av_malloc(size);
3866  if (!trk->vos_data)
3867  return AVERROR(ENOMEM);
3868  memcpy(trk->vos_data, pkt->data, size);
3869  }
3870 
3871  if (trk->entry >= trk->cluster_capacity) {
3872  unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
3873  if (av_reallocp_array(&trk->cluster, new_capacity,
3874  sizeof(*trk->cluster)))
3875  return AVERROR(ENOMEM);
3876  trk->cluster_capacity = new_capacity;
3877  }
3878 
3879  trk->cluster[trk->entry].pos = avio_tell(pb) - size;
3880  trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
3881  trk->cluster[trk->entry].chunkNum = 0;
3882  trk->cluster[trk->entry].size = size;
3883  trk->cluster[trk->entry].entries = samples_in_chunk;
3884  trk->cluster[trk->entry].dts = pkt->dts;
3885  if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
3886  /* First packet of a new fragment. We already wrote the duration
3887  * of the last packet of the previous fragment based on track_duration,
3888  * which might not exactly match our dts. Therefore adjust the dts
3889  * of this packet to be what the previous packets duration implies. */
3890  trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
3891  }
3892  if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !supports_edts(mov)) {
3893  trk->cluster[trk->entry].dts = trk->start_dts = 0;
3894  }
3895  if (trk->start_dts == AV_NOPTS_VALUE) {
3896  trk->start_dts = pkt->dts;
3897  if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
3899  "Track %d starts with a nonzero dts %"PRId64". This "
3900  "currently isn't handled correctly in combination with "
3901  "empty_moov.\n", pkt->stream_index, pkt->dts);
3902  }
3903  trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
3904  trk->last_sample_is_subtitle_end = 0;
3905 
3906  if (pkt->pts == AV_NOPTS_VALUE) {
3907  av_log(s, AV_LOG_WARNING, "pts has no value\n");
3908  pkt->pts = pkt->dts;
3909  }
3910  if (pkt->dts != pkt->pts)
3911  trk->flags |= MOV_TRACK_CTTS;
3912  trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
3913  trk->cluster[trk->entry].flags = 0;
3914  if (enc->codec_id == AV_CODEC_ID_VC1) {
3915  mov_parse_vc1_frame(pkt, trk, mov->fragments);
3916  } else if (pkt->flags & AV_PKT_FLAG_KEY) {
3917  if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
3918  trk->entry > 0) { // force sync sample for the first key frame
3919  mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
3920  if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
3921  trk->flags |= MOV_TRACK_STPS;
3922  } else {
3923  trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
3924  }
3925  if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
3926  trk->has_keyframes++;
3927  }
3928  trk->entry++;
3929  trk->sample_count += samples_in_chunk;
3930  mov->mdat_size += size;
3931 
3932  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
3933  ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
3934  reformatted_data, size);
3935 end:
3936  av_free(reformatted_data);
3937  return 0;
3938 }
3939 
3941 {
3942  MOVMuxContext *mov = s->priv_data;
3943  MOVTrack *trk = &mov->tracks[pkt->stream_index];
3944  AVCodecContext *enc = trk->enc;
3945  int64_t frag_duration = 0;
3946  int size = pkt->size;
3947 
3948  if (!pkt->size)
3949  return 0; /* Discard 0 sized packets */
3950 
3951  if (trk->entry && pkt->stream_index < s->nb_streams)
3952  frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
3953  s->streams[pkt->stream_index]->time_base,
3954  AV_TIME_BASE_Q);
3955  if ((mov->max_fragment_duration &&
3956  frag_duration >= mov->max_fragment_duration) ||
3957  (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
3958  (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
3959  enc->codec_type == AVMEDIA_TYPE_VIDEO &&
3960  trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
3961  if (frag_duration >= mov->min_fragment_duration)
3962  mov_flush_fragment(s);
3963  }
3964 
3965  return ff_mov_write_packet(s, pkt);
3966 }
3967 
3969  int stream_index,
3970  int64_t dts) {
3971  AVPacket end;
3972  uint8_t data[2] = {0};
3973  int ret;
3974 
3975  av_init_packet(&end);
3976  end.size = sizeof(data);
3977  end.data = data;
3978  end.pts = dts;
3979  end.dts = dts;
3980  end.duration = 0;
3981  end.stream_index = stream_index;
3982 
3983  ret = mov_write_single_packet(s, &end);
3984  av_free_packet(&end);
3985 
3986  return ret;
3987 }
3988 
3990 {
3991  if (!pkt) {
3992  mov_flush_fragment(s);
3993  return 1;
3994  } else {
3995  int i;
3996  MOVMuxContext *mov = s->priv_data;
3997 
3998  if (!pkt->size) return 0; /* Discard 0 sized packets */
3999 
4000  /*
4001  * Subtitles require special handling.
4002  *
4003  * 1) For full complaince, every track must have a sample at
4004  * dts == 0, which is rarely true for subtitles. So, as soon
4005  * as we see any packet with dts > 0, write an empty subtitle
4006  * at dts == 0 for any subtitle track with no samples in it.
4007  *
4008  * 2) For each subtitle track, check if the current packet's
4009  * dts is past the duration of the last subtitle sample. If
4010  * so, we now need to write an end sample for that subtitle.
4011  *
4012  * This must be done conditionally to allow for subtitles that
4013  * immediately replace each other, in which case an end sample
4014  * is not needed, and is, in fact, actively harmful.
4015  *
4016  * 3) See mov_write_trailer for how the final end sample is
4017  * handled.
4018  */
4019  for (i = 0; i < mov->nb_streams; i++) {
4020  MOVTrack *trk = &mov->tracks[i];
4021  int ret;
4022 
4023  if (trk->enc->codec_id == AV_CODEC_ID_MOV_TEXT &&
4024  trk->track_duration < pkt->dts &&
4025  (trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {
4027  if (ret < 0) return ret;
4028  trk->last_sample_is_subtitle_end = 1;
4029  }
4030  }
4031 
4032  return mov_write_single_packet(s, pkt);
4033  }
4034 }
4035 
4036 // QuickTime chapters involve an additional text track with the chapter names
4037 // as samples, and a tref pointing from the other tracks to the chapter one.
4038 static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
4039 {
4040  AVIOContext *pb;
4041 
4042  MOVMuxContext *mov = s->priv_data;
4043  MOVTrack *track = &mov->tracks[tracknum];
4044  AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
4045  int i, len;
4046 
4047  track->mode = mov->mode;
4048  track->tag = MKTAG('t','e','x','t');
4049  track->timescale = MOV_TIMESCALE;
4050  track->enc = avcodec_alloc_context3(NULL);
4051  if (!track->enc)
4052  return AVERROR(ENOMEM);
4054 #if 0
4055  // These properties are required to make QT recognize the chapter track
4056  uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
4057  if (ff_alloc_extradata(track->enc, sizeof(chapter_properties)))
4058  return AVERROR(ENOMEM);
4059  memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
4060 #else
4061  if (avio_open_dyn_buf(&pb) >= 0) {
4062  int size;
4063  uint8_t *buf;
4064 
4065  /* Stub header (usually for Quicktime chapter track) */
4066  // TextSampleEntry
4067  avio_wb32(pb, 0x01); // displayFlags
4068  avio_w8(pb, 0x00); // horizontal justification
4069  avio_w8(pb, 0x00); // vertical justification
4070  avio_w8(pb, 0x00); // bgColourRed
4071  avio_w8(pb, 0x00); // bgColourGreen
4072  avio_w8(pb, 0x00); // bgColourBlue
4073  avio_w8(pb, 0x00); // bgColourAlpha
4074  // BoxRecord
4075  avio_wb16(pb, 0x00); // defTextBoxTop
4076  avio_wb16(pb, 0x00); // defTextBoxLeft
4077  avio_wb16(pb, 0x00); // defTextBoxBottom
4078  avio_wb16(pb, 0x00); // defTextBoxRight
4079  // StyleRecord
4080  avio_wb16(pb, 0x00); // startChar
4081  avio_wb16(pb, 0x00); // endChar
4082  avio_wb16(pb, 0x01); // fontID
4083  avio_w8(pb, 0x00); // fontStyleFlags
4084  avio_w8(pb, 0x00); // fontSize
4085  avio_w8(pb, 0x00); // fgColourRed
4086  avio_w8(pb, 0x00); // fgColourGreen
4087  avio_w8(pb, 0x00); // fgColourBlue
4088  avio_w8(pb, 0x00); // fgColourAlpha
4089  // FontTableBox
4090  avio_wb32(pb, 0x0D); // box size
4091  ffio_wfourcc(pb, "ftab"); // box atom name
4092  avio_wb16(pb, 0x01); // entry count
4093  // FontRecord
4094  avio_wb16(pb, 0x01); // font ID
4095  avio_w8(pb, 0x00); // font name length
4096 
4097  if ((size = avio_close_dyn_buf(pb, &buf)) > 0) {
4098  track->enc->extradata = buf;
4099  track->enc->extradata_size = size;
4100  } else {
4101  av_freep(&buf);
4102  }
4103  }
4104 #endif
4105 
4106  for (i = 0; i < s->nb_chapters; i++) {
4107  AVChapter *c = s->chapters[i];
4108  AVDictionaryEntry *t;
4109 
4110  int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
4111  pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
4112  pkt.duration = end - pkt.dts;
4113 
4114  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
4115  const char encd[12] = {
4116  0x00, 0x00, 0x00, 0x0C,
4117  'e', 'n', 'c', 'd',
4118  0x00, 0x00, 0x01, 0x00 };
4119  len = strlen(t->value);
4120  pkt.size = len + 2 + 12;
4121  pkt.data = av_malloc(pkt.size);
4122  if (!pkt.data)
4123  return AVERROR(ENOMEM);
4124  AV_WB16(pkt.data, len);
4125  memcpy(pkt.data + 2, t->value, len);
4126  memcpy(pkt.data + len + 2, encd, sizeof(encd));
4128  av_freep(&pkt.data);
4129  }
4130  }
4131 
4132  return 0;
4133 }
4134 
4135 static int mov_create_timecode_track(AVFormatContext *s, int index, int src_index, const char *tcstr)
4136 {
4137  int ret;
4138  MOVMuxContext *mov = s->priv_data;
4139  MOVTrack *track = &mov->tracks[index];
4140  AVStream *src_st = s->streams[src_index];
4141  AVTimecode tc;
4142  AVPacket pkt = {.stream_index = index, .flags = AV_PKT_FLAG_KEY, .size = 4};
4143  AVRational rate = find_fps(s, src_st);
4144 
4145  /* compute the frame number */
4146  ret = av_timecode_init_from_string(&tc, rate, tcstr, s);
4147  if (ret < 0)
4148  return ret;
4149 
4150  /* tmcd track based on video stream */
4151  track->mode = mov->mode;
4152  track->tag = MKTAG('t','m','c','d');
4153  track->src_track = src_index;
4154  track->timescale = mov->tracks[src_index].timescale;
4157 
4158  /* set st to src_st for metadata access*/
4159  track->st = src_st;
4160 
4161  /* encode context: tmcd data stream */
4162  track->enc = avcodec_alloc_context3(NULL);
4163  track->enc->codec_type = AVMEDIA_TYPE_DATA;
4164  track->enc->codec_tag = track->tag;
4165  track->enc->time_base = av_inv_q(rate);
4166 
4167  /* the tmcd track just contains one packet with the frame number */
4168  pkt.data = av_malloc(pkt.size);
4169  AV_WB32(pkt.data, tc.start);
4170  ret = ff_mov_write_packet(s, &pkt);
4171  av_free(pkt.data);
4172  return ret;
4173 }
4174 
4175 /*
4176  * st->disposition controls the "enabled" flag in the tkhd tag.
4177  * QuickTime will not play a track if it is not enabled. So make sure
4178  * that one track of each type (audio, video, subtitle) is enabled.
4179  *
4180  * Subtitles are special. For audio and video, setting "enabled" also
4181  * makes the track "default" (i.e. it is rendered when played). For
4182  * subtitles, an "enabled" subtitle is not rendered by default, but
4183  * if no subtitle is enabled, the subtitle menu in QuickTime will be
4184  * empty!
4185  */
4187 {
4188  MOVMuxContext *mov = s->priv_data;
4189  int i;
4190  int enabled[AVMEDIA_TYPE_NB];
4191  int first[AVMEDIA_TYPE_NB];
4192 
4193  for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
4194  enabled[i] = 0;
4195  first[i] = -1;
4196  }
4197 
4198  for (i = 0; i < s->nb_streams; i++) {
4199  AVStream *st = s->streams[i];
4200 
4201  if (st->codec->codec_type <= AVMEDIA_TYPE_UNKNOWN ||
4202  st->codec->codec_type >= AVMEDIA_TYPE_NB)
4203  continue;
4204 
4205  if (first[st->codec->codec_type] < 0)
4206  first[st->codec->codec_type] = i;
4207  if (st->disposition & AV_DISPOSITION_DEFAULT) {
4208  mov->tracks[i].flags |= MOV_TRACK_ENABLED;
4209  enabled[st->codec->codec_type]++;
4210  }
4211  }
4212 
4213  for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
4214  switch (i) {
4215  case AVMEDIA_TYPE_VIDEO:
4216  case AVMEDIA_TYPE_AUDIO:
4217  case AVMEDIA_TYPE_SUBTITLE:
4218  if (enabled[i] > 1)
4219  mov->per_stream_grouping = 1;
4220  if (!enabled[i] && first[i] >= 0)
4221  mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;
4222  break;
4223  }
4224  }
4225 }
4226 
4228 {
4229  MOVMuxContext *mov = s->priv_data;
4230  int i;
4231 
4232  if (mov->chapter_track) {
4233  if (mov->tracks[mov->chapter_track].enc)
4234  av_freep(&mov->tracks[mov->chapter_track].enc->extradata);
4235  av_freep(&mov->tracks[mov->chapter_track].enc);
4236  }
4237 
4238  for (i = 0; i < mov->nb_streams; i++) {
4239  if (mov->tracks[i].tag == MKTAG('r',