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movenc.c
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1 /*
2  * MOV, 3GP, MP4 muxer
3  * Copyright (c) 2003 Thomas Raivio
4  * Copyright (c) 2004 Gildas Bazin <gbazin at videolan dot org>
5  * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <stdint.h>
25 #include <inttypes.h>
26 
27 #include "movenc.h"
28 #include "avformat.h"
29 #include "avio_internal.h"
30 #include "riff.h"
31 #include "avio.h"
32 #include "isom.h"
33 #include "avc.h"
34 #include "libavcodec/ac3_parser.h"
35 #include "libavcodec/get_bits.h"
36 #include "libavcodec/put_bits.h"
37 #include "libavcodec/vc1_common.h"
38 #include "libavcodec/raw.h"
39 #include "internal.h"
40 #include "libavutil/avstring.h"
41 #include "libavutil/intfloat.h"
42 #include "libavutil/mathematics.h"
43 #include "libavutil/opt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/timecode.h"
47 #include "hevc.h"
48 #include "rtpenc.h"
49 #include "mov_chan.h"
50 
51 #undef NDEBUG
52 #include <assert.h>
53 
54 static const AVOption options[] = {
55  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
56  { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
57  { "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
58  { "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
59  { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
60  { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
61  { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
62  { "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
63  { "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
64  { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
65  { "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
66  { "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
67  { "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
68  { "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
69  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
70  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
71  { "iods_audio_profile", "iods audio profile atom.", offsetof(MOVMuxContext, iods_audio_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
72  { "iods_video_profile", "iods video profile atom.", offsetof(MOVMuxContext, iods_video_profile), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, AV_OPT_FLAG_ENCODING_PARAM},
73  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
74  { "min_frag_duration", "Minimum fragment duration", offsetof(MOVMuxContext, min_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
75  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
76  { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
77  { "video_track_timescale", "set timescale of all video tracks", offsetof(MOVMuxContext, video_track_timescale), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
78  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
79  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
80  { "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
81  { NULL },
82 };
83 
84 #define MOV_CLASS(flavor)\
85 static const AVClass flavor ## _muxer_class = {\
86  .class_name = #flavor " muxer",\
87  .item_name = av_default_item_name,\
88  .option = options,\
89  .version = LIBAVUTIL_VERSION_INT,\
90 };
91 
92 static int get_moov_size(AVFormatContext *s);
93 
94 static int utf8len(const uint8_t *b)
95 {
96  int len = 0;
97  int val;
98  while (*b) {
99  GET_UTF8(val, *b++, return -1;)
100  len++;
101  }
102  return len;
103 }
104 
105 //FIXME support 64 bit variant with wide placeholders
106 static int64_t update_size(AVIOContext *pb, int64_t pos)
107 {
108  int64_t curpos = avio_tell(pb);
109  avio_seek(pb, pos, SEEK_SET);
110  avio_wb32(pb, curpos - pos); /* rewrite size */
111  avio_seek(pb, curpos, SEEK_SET);
112 
113  return curpos - pos;
114 }
115 
116 static int co64_required(const MOVTrack *track)
117 {
118  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
119  return 1;
120  return 0;
121 }
122 
123 /* Chunk offset atom */
124 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
125 {
126  int i;
127  int mode64 = co64_required(track); // use 32 bit size variant if possible
128  int64_t pos = avio_tell(pb);
129  avio_wb32(pb, 0); /* size */
130  if (mode64)
131  ffio_wfourcc(pb, "co64");
132  else
133  ffio_wfourcc(pb, "stco");
134  avio_wb32(pb, 0); /* version & flags */
135  avio_wb32(pb, track->chunkCount); /* entry count */
136  for (i = 0; i < track->entry; i++) {
137  if (!track->cluster[i].chunkNum)
138  continue;
139  if (mode64 == 1)
140  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
141  else
142  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
143  }
144  return update_size(pb, pos);
145 }
146 
147 /* Sample size atom */
148 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
149 {
150  int equalChunks = 1;
151  int i, j, entries = 0, tst = -1, oldtst = -1;
152 
153  int64_t pos = avio_tell(pb);
154  avio_wb32(pb, 0); /* size */
155  ffio_wfourcc(pb, "stsz");
156  avio_wb32(pb, 0); /* version & flags */
157 
158  for (i = 0; i < track->entry; i++) {
159  tst = track->cluster[i].size / track->cluster[i].entries;
160  if (oldtst != -1 && tst != oldtst)
161  equalChunks = 0;
162  oldtst = tst;
163  entries += track->cluster[i].entries;
164  }
165  if (equalChunks && track->entry) {
166  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
167  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
168  avio_wb32(pb, sSize); // sample size
169  avio_wb32(pb, entries); // sample count
170  } else {
171  avio_wb32(pb, 0); // sample size
172  avio_wb32(pb, entries); // sample count
173  for (i = 0; i < track->entry; i++) {
174  for (j = 0; j < track->cluster[i].entries; j++) {
175  avio_wb32(pb, track->cluster[i].size /
176  track->cluster[i].entries);
177  }
178  }
179  }
180  return update_size(pb, pos);
181 }
182 
183 /* Sample to chunk atom */
184 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
185 {
186  int index = 0, oldval = -1, i;
187  int64_t entryPos, curpos;
188 
189  int64_t pos = avio_tell(pb);
190  avio_wb32(pb, 0); /* size */
191  ffio_wfourcc(pb, "stsc");
192  avio_wb32(pb, 0); // version & flags
193  entryPos = avio_tell(pb);
194  avio_wb32(pb, track->chunkCount); // entry count
195  for (i = 0; i < track->entry; i++) {
196  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
197  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
198  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
199  avio_wb32(pb, 0x1); // sample description index
200  oldval = track->cluster[i].samples_in_chunk;
201  index++;
202  }
203  }
204  curpos = avio_tell(pb);
205  avio_seek(pb, entryPos, SEEK_SET);
206  avio_wb32(pb, index); // rewrite size
207  avio_seek(pb, curpos, SEEK_SET);
208 
209  return update_size(pb, pos);
210 }
211 
212 /* Sync sample atom */
213 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
214 {
215  int64_t curpos, entryPos;
216  int i, index = 0;
217  int64_t pos = avio_tell(pb);
218  avio_wb32(pb, 0); // size
219  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
220  avio_wb32(pb, 0); // version & flags
221  entryPos = avio_tell(pb);
222  avio_wb32(pb, track->entry); // entry count
223  for (i = 0; i < track->entry; i++) {
224  if (track->cluster[i].flags & flag) {
225  avio_wb32(pb, i + 1);
226  index++;
227  }
228  }
229  curpos = avio_tell(pb);
230  avio_seek(pb, entryPos, SEEK_SET);
231  avio_wb32(pb, index); // rewrite size
232  avio_seek(pb, curpos, SEEK_SET);
233  return update_size(pb, pos);
234 }
235 
236 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
237 {
238  avio_wb32(pb, 0x11); /* size */
239  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
240  else ffio_wfourcc(pb, "damr");
241  ffio_wfourcc(pb, "FFMP");
242  avio_w8(pb, 0); /* decoder version */
243 
244  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
245  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
246  avio_w8(pb, 0x01); /* Frames per sample */
247  return 0x11;
248 }
249 
250 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
251 {
252  GetBitContext gbc;
253  PutBitContext pbc;
254  uint8_t buf[3];
255  int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
256 
257  if (track->vos_len < 7)
258  return -1;
259 
260  avio_wb32(pb, 11);
261  ffio_wfourcc(pb, "dac3");
262 
263  init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
264  fscod = get_bits(&gbc, 2);
265  frmsizecod = get_bits(&gbc, 6);
266  bsid = get_bits(&gbc, 5);
267  bsmod = get_bits(&gbc, 3);
268  acmod = get_bits(&gbc, 3);
269  if (acmod == 2) {
270  skip_bits(&gbc, 2); // dsurmod
271  } else {
272  if ((acmod & 1) && acmod != 1)
273  skip_bits(&gbc, 2); // cmixlev
274  if (acmod & 4)
275  skip_bits(&gbc, 2); // surmixlev
276  }
277  lfeon = get_bits1(&gbc);
278 
279  init_put_bits(&pbc, buf, sizeof(buf));
280  put_bits(&pbc, 2, fscod);
281  put_bits(&pbc, 5, bsid);
282  put_bits(&pbc, 3, bsmod);
283  put_bits(&pbc, 3, acmod);
284  put_bits(&pbc, 1, lfeon);
285  put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
286  put_bits(&pbc, 5, 0); // reserved
287 
288  flush_put_bits(&pbc);
289  avio_write(pb, buf, sizeof(buf));
290 
291  return 11;
292 }
293 
294 struct eac3_info {
298 
299  /* Layout of the EC3SpecificBox */
300  /* maximum bitrate */
301  uint16_t data_rate;
302  /* number of independent substreams */
304  struct {
305  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
307  /* bit stream identification 5 bits */
309  /* one bit reserved */
310  /* audio service mixing (not supported yet) 1 bit */
311  /* bit stream mode 3 bits */
313  /* audio coding mode 3 bits */
315  /* sub woofer on 1 bit */
317  /* 3 bits reserved */
318  /* number of dependent substreams associated with this substream 4 bits */
320  /* channel locations of the dependent substream(s), if any, 9 bits */
321  uint16_t chan_loc;
322  /* if there is no dependent substream, then one bit reserved instead */
323  } substream[1]; /* TODO: support 8 independent substreams */
324 };
325 
326 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
327 {
328  GetBitContext gbc;
329  AC3HeaderInfo tmp, *hdr = &tmp;
330  struct eac3_info *info;
331  int num_blocks;
332 
333  if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
334  return AVERROR(ENOMEM);
335  info = track->eac3_priv;
336 
337  init_get_bits(&gbc, pkt->data, pkt->size * 8);
338  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0) {
339  /* drop the packets until we see a good one */
340  if (!track->entry) {
341  av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
342  return 0;
343  }
344  return AVERROR_INVALIDDATA;
345  }
346 
347  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
348  num_blocks = hdr->num_blocks;
349 
350  if (!info->ec3_done) {
351  /* AC-3 substream must be the first one */
352  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)
353  return AVERROR(EINVAL);
354 
355  /* this should always be the case, given that our AC-3 parser
356  * concatenates dependent frames to their independent parent */
358  /* substream ids must be incremental */
359  if (hdr->substreamid > info->num_ind_sub + 1)
360  return AVERROR(EINVAL);
361 
362  if (hdr->substreamid == info->num_ind_sub + 1) {
363  //info->num_ind_sub++;
364  avpriv_request_sample(track->enc, "Multiple independent substreams");
365  return AVERROR_PATCHWELCOME;
366  } else if (hdr->substreamid < info->num_ind_sub ||
367  hdr->substreamid == 0 && info->substream[0].bsid) {
368  info->ec3_done = 1;
369  goto concatenate;
370  }
371  }
372 
373  /* fill the info needed for the "dec3" atom */
374  info->substream[hdr->substreamid].fscod = hdr->sr_code;
375  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
376  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
377  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
378  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
379 
380  /* Parse dependent substream(s), if any */
381  if (pkt->size != hdr->frame_size) {
382  int cumul_size = hdr->frame_size;
383  int parent = hdr->substreamid;
384 
385  while (cumul_size != pkt->size) {
386  int i;
387  init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);
388  if (avpriv_ac3_parse_header2(&gbc, &hdr) < 0)
389  return AVERROR_INVALIDDATA;
391  return AVERROR(EINVAL);
392  cumul_size += hdr->frame_size;
393  info->substream[parent].num_dep_sub++;
394 
395  /* header is parsed up to lfeon, but custom channel map may be needed */
396  /* skip bsid */
397  skip_bits(&gbc, 5);
398  /* skip volume control params */
399  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
400  skip_bits(&gbc, 5); // skip dialog normalization
401  if (get_bits1(&gbc)) {
402  skip_bits(&gbc, 8); // skip compression gain word
403  }
404  }
405  /* get the dependent stream channel map, if exists */
406  if (get_bits1(&gbc))
407  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
408  else
409  info->substream[parent].chan_loc |= hdr->channel_mode;
410  }
411  }
412  }
413 
414 concatenate:
415  if (!info->num_blocks && num_blocks == 6)
416  return pkt->size;
417  else if (info->num_blocks + num_blocks > 6)
418  return AVERROR_INVALIDDATA;
419 
420  if (!info->num_blocks) {
421  int ret;
422  if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)
423  return ret;
424  info->num_blocks = num_blocks;
425  return 0;
426  } else {
427  int ret;
428  if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
429  return ret;
430  memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
431  info->num_blocks += num_blocks;
432  info->pkt.duration += pkt->duration;
433  if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
434  return ret;
435  if (info->num_blocks != 6)
436  return 0;
437  av_free_packet(pkt);
438  if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)
439  return ret;
440  av_free_packet(&info->pkt);
441  info->num_blocks = 0;
442  }
443 
444  return pkt->size;
445 }
446 
447 static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)
448 {
449  PutBitContext pbc;
450  uint8_t *buf;
451  struct eac3_info *info;
452  int size, i;
453 
454  if (!track->eac3_priv)
455  return AVERROR(EINVAL);
456 
457  info = track->eac3_priv;
458  size = 2 + 4 * (info->num_ind_sub + 1);
459  buf = av_malloc(size);
460  if (!buf) {
461  size = AVERROR(ENOMEM);
462  goto end;
463  }
464 
465  init_put_bits(&pbc, buf, size);
466  put_bits(&pbc, 13, info->data_rate);
467  put_bits(&pbc, 3, info->num_ind_sub);
468  for (i = 0; i <= info->num_ind_sub; i++) {
469  put_bits(&pbc, 2, info->substream[i].fscod);
470  put_bits(&pbc, 5, info->substream[i].bsid);
471  put_bits(&pbc, 1, 0); /* reserved */
472  put_bits(&pbc, 1, 0); /* asvc */
473  put_bits(&pbc, 3, info->substream[i].bsmod);
474  put_bits(&pbc, 3, info->substream[i].acmod);
475  put_bits(&pbc, 1, info->substream[i].lfeon);
476  put_bits(&pbc, 5, 0); /* reserved */
477  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
478  if (!info->substream[i].num_dep_sub) {
479  put_bits(&pbc, 1, 0); /* reserved */
480  size--;
481  } else {
482  put_bits(&pbc, 9, info->substream[i].chan_loc);
483  }
484  }
485  flush_put_bits(&pbc);
486 
487  avio_wb32(pb, size + 8);
488  ffio_wfourcc(pb, "dec3");
489  avio_write(pb, buf, size);
490 
491  av_free(buf);
492 
493 end:
494  av_free_packet(&info->pkt);
495  av_freep(&track->eac3_priv);
496 
497  return size;
498 }
499 
500 /**
501  * This function writes extradata "as is".
502  * Extradata must be formatted like a valid atom (with size and tag).
503  */
505 {
506  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
507  return track->enc->extradata_size;
508 }
509 
511 {
512  avio_wb32(pb, 10);
513  ffio_wfourcc(pb, "enda");
514  avio_wb16(pb, 1); /* little endian */
515  return 10;
516 }
517 
519 {
520  avio_wb32(pb, 10);
521  ffio_wfourcc(pb, "enda");
522  avio_wb16(pb, 0); /* big endian */
523  return 10;
524 }
525 
526 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
527 {
528  int i = 3;
529  avio_w8(pb, tag);
530  for (; i > 0; i--)
531  avio_w8(pb, (size >> (7 * i)) | 0x80);
532  avio_w8(pb, size & 0x7F);
533 }
534 
535 static unsigned compute_avg_bitrate(MOVTrack *track)
536 {
537  uint64_t size = 0;
538  int i;
539  if (!track->track_duration)
540  return 0;
541  for (i = 0; i < track->entry; i++)
542  size += track->cluster[i].size;
543  return size * 8 * track->timescale / track->track_duration;
544 }
545 
546 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
547 {
548  int64_t pos = avio_tell(pb);
549  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
550  unsigned avg_bitrate;
551 
552  avio_wb32(pb, 0); // size
553  ffio_wfourcc(pb, "esds");
554  avio_wb32(pb, 0); // Version
555 
556  // ES descriptor
557  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
558  avio_wb16(pb, track->track_id);
559  avio_w8(pb, 0x00); // flags (= no flags)
560 
561  // DecoderConfig descriptor
562  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
563 
564  // Object type indication
565  if ((track->enc->codec_id == AV_CODEC_ID_MP2 ||
566  track->enc->codec_id == AV_CODEC_ID_MP3) &&
567  track->enc->sample_rate > 24000)
568  avio_w8(pb, 0x6B); // 11172-3
569  else
571 
572  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
573  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
574  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
575  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
576  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
577  avio_w8(pb, 0x15); // flags (= Audiostream)
578  else
579  avio_w8(pb, 0x11); // flags (= Visualstream)
580 
581  avio_wb24(pb, track->enc->rc_buffer_size >> 3); // Buffersize DB
582 
583  avg_bitrate = compute_avg_bitrate(track);
584  // maxbitrate (FIXME should be max rate in any 1 sec window)
585  avio_wb32(pb, FFMAX3(track->enc->bit_rate, track->enc->rc_max_rate, avg_bitrate));
586  avio_wb32(pb, avg_bitrate);
587 
588  if (track->vos_len) {
589  // DecoderSpecific info descriptor
590  put_descr(pb, 0x05, track->vos_len);
591  avio_write(pb, track->vos_data, track->vos_len);
592  }
593 
594  // SL descriptor
595  put_descr(pb, 0x06, 1);
596  avio_w8(pb, 0x02);
597  return update_size(pb, pos);
598 }
599 
601 {
602  return codec_id == AV_CODEC_ID_PCM_S24LE ||
603  codec_id == AV_CODEC_ID_PCM_S32LE ||
604  codec_id == AV_CODEC_ID_PCM_F32LE ||
605  codec_id == AV_CODEC_ID_PCM_F64LE;
606 }
607 
609 {
610  return codec_id == AV_CODEC_ID_PCM_S24BE ||
611  codec_id == AV_CODEC_ID_PCM_S32BE ||
612  codec_id == AV_CODEC_ID_PCM_F32BE ||
613  codec_id == AV_CODEC_ID_PCM_F64BE;
614 }
615 
616 static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track)
617 {
618  int ret;
619  int64_t pos = avio_tell(pb);
620  avio_wb32(pb, 0);
621  avio_wl32(pb, track->tag); // store it byteswapped
622  track->enc->codec_tag = av_bswap16(track->tag >> 16);
623  if ((ret = ff_put_wav_header(pb, track->enc, 0)) < 0)
624  return ret;
625  return update_size(pb, pos);
626 }
627 
628 static int mov_write_wfex_tag(AVIOContext *pb, MOVTrack *track)
629 {
630  int ret;
631  int64_t pos = avio_tell(pb);
632  avio_wb32(pb, 0);
633  ffio_wfourcc(pb, "wfex");
634  if ((ret = ff_put_wav_header(pb, track->enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
635  return ret;
636  return update_size(pb, pos);
637 }
638 
639 static int mov_write_chan_tag(AVIOContext *pb, MOVTrack *track)
640 {
641  uint32_t layout_tag, bitmap;
642  int64_t pos = avio_tell(pb);
643 
644  layout_tag = ff_mov_get_channel_layout_tag(track->enc->codec_id,
645  track->enc->channel_layout,
646  &bitmap);
647  if (!layout_tag) {
648  av_log(track->enc, AV_LOG_WARNING, "not writing 'chan' tag due to "
649  "lack of channel information\n");
650  return 0;
651  }
652 
653  if (track->multichannel_as_mono)
654  return 0;
655 
656  avio_wb32(pb, 0); // Size
657  ffio_wfourcc(pb, "chan"); // Type
658  avio_w8(pb, 0); // Version
659  avio_wb24(pb, 0); // Flags
660  avio_wb32(pb, layout_tag); // mChannelLayoutTag
661  avio_wb32(pb, bitmap); // mChannelBitmap
662  avio_wb32(pb, 0); // mNumberChannelDescriptions
663 
664  return update_size(pb, pos);
665 }
666 
667 static int mov_write_wave_tag(AVIOContext *pb, MOVTrack *track)
668 {
669  int64_t pos = avio_tell(pb);
670 
671  avio_wb32(pb, 0); /* size */
672  ffio_wfourcc(pb, "wave");
673 
674  if (track->enc->codec_id != AV_CODEC_ID_QDM2) {
675  avio_wb32(pb, 12); /* size */
676  ffio_wfourcc(pb, "frma");
677  avio_wl32(pb, track->tag);
678  }
679 
680  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
681  /* useless atom needed by mplayer, ipod, not needed by quicktime */
682  avio_wb32(pb, 12); /* size */
683  ffio_wfourcc(pb, "mp4a");
684  avio_wb32(pb, 0);
685  mov_write_esds_tag(pb, track);
686  } else if (mov_pcm_le_gt16(track->enc->codec_id)) {
687  mov_write_enda_tag(pb);
688  } else if (mov_pcm_be_gt16(track->enc->codec_id)) {
690  } else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB) {
691  mov_write_amr_tag(pb, track);
692  } else if (track->enc->codec_id == AV_CODEC_ID_AC3) {
693  mov_write_ac3_tag(pb, track);
694  } else if (track->enc->codec_id == AV_CODEC_ID_EAC3) {
695  mov_write_eac3_tag(pb, track);
696  } else if (track->enc->codec_id == AV_CODEC_ID_ALAC ||
697  track->enc->codec_id == AV_CODEC_ID_QDM2) {
698  mov_write_extradata_tag(pb, track);
699  } else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
701  mov_write_ms_tag(pb, track);
702  }
703 
704  avio_wb32(pb, 8); /* size */
705  avio_wb32(pb, 0); /* null tag */
706 
707  return update_size(pb, pos);
708 }
709 
711 {
712  uint8_t *unescaped;
713  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
714  int unescaped_size, seq_found = 0;
715  int level = 0, interlace = 0;
716  int packet_seq = track->vc1_info.packet_seq;
717  int packet_entry = track->vc1_info.packet_entry;
718  int slices = track->vc1_info.slices;
719  PutBitContext pbc;
720 
721  if (track->start_dts == AV_NOPTS_VALUE) {
722  /* No packets written yet, vc1_info isn't authoritative yet. */
723  /* Assume inline sequence and entry headers. This will be
724  * overwritten at the end if the file is seekable. */
725  packet_seq = packet_entry = 1;
726  }
727 
728  unescaped = av_mallocz(track->vos_len + FF_INPUT_BUFFER_PADDING_SIZE);
729  if (!unescaped)
730  return AVERROR(ENOMEM);
731  start = find_next_marker(track->vos_data, end);
732  for (next = start; next < end; start = next) {
733  GetBitContext gb;
734  int size;
735  next = find_next_marker(start + 4, end);
736  size = next - start - 4;
737  if (size <= 0)
738  continue;
739  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
740  init_get_bits(&gb, unescaped, 8 * unescaped_size);
741  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
742  int profile = get_bits(&gb, 2);
743  if (profile != PROFILE_ADVANCED) {
744  av_free(unescaped);
745  return AVERROR(ENOSYS);
746  }
747  seq_found = 1;
748  level = get_bits(&gb, 3);
749  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
750  * width, height */
751  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
752  skip_bits(&gb, 1); /* broadcast */
753  interlace = get_bits1(&gb);
754  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
755  }
756  }
757  if (!seq_found) {
758  av_free(unescaped);
759  return AVERROR(ENOSYS);
760  }
761 
762  init_put_bits(&pbc, buf, 7);
763  /* VC1DecSpecStruc */
764  put_bits(&pbc, 4, 12); /* profile - advanced */
765  put_bits(&pbc, 3, level);
766  put_bits(&pbc, 1, 0); /* reserved */
767  /* VC1AdvDecSpecStruc */
768  put_bits(&pbc, 3, level);
769  put_bits(&pbc, 1, 0); /* cbr */
770  put_bits(&pbc, 6, 0); /* reserved */
771  put_bits(&pbc, 1, !interlace); /* no interlace */
772  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
773  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
774  put_bits(&pbc, 1, !slices); /* no slice code */
775  put_bits(&pbc, 1, 0); /* no bframe */
776  put_bits(&pbc, 1, 0); /* reserved */
777 
778  /* framerate */
779  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
780  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
781  else
782  put_bits32(&pbc, 0xffffffff);
783 
784  flush_put_bits(&pbc);
785 
786  av_free(unescaped);
787 
788  return 0;
789 }
790 
791 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
792 {
793  uint8_t buf[7] = { 0 };
794  int ret;
795 
796  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
797  return ret;
798 
799  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
800  ffio_wfourcc(pb, "dvc1");
801  track->vc1_info.struct_offset = avio_tell(pb);
802  avio_write(pb, buf, sizeof(buf));
803  avio_write(pb, track->vos_data, track->vos_len);
804 
805  return 0;
806 }
807 
808 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
809 {
810  avio_wb32(pb, track->vos_len + 8);
811  ffio_wfourcc(pb, "glbl");
812  avio_write(pb, track->vos_data, track->vos_len);
813  return 8 + track->vos_len;
814 }
815 
816 /**
817  * Compute flags for 'lpcm' tag.
818  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
819  */
821 {
822  switch (codec_id) {
825  return 11;
828  return 9;
829  case AV_CODEC_ID_PCM_U8:
830  return 10;
834  return 14;
835  case AV_CODEC_ID_PCM_S8:
839  return 12;
840  default:
841  return 0;
842  }
843 }
844 
845 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
846 {
847  int64_t next_dts;
848 
849  if (cluster_idx >= track->entry)
850  return 0;
851 
852  if (cluster_idx + 1 == track->entry)
853  next_dts = track->track_duration + track->start_dts;
854  else
855  next_dts = track->cluster[cluster_idx + 1].dts;
856 
857  next_dts -= track->cluster[cluster_idx].dts;
858 
859  av_assert0(next_dts >= 0);
860  av_assert0(next_dts <= INT_MAX);
861 
862  return next_dts;
863 }
864 
866 {
867  int i, first_duration;
868 
869 // return track->enc->frame_size;
870 
871  /* use 1 for raw PCM */
872  if (!track->audio_vbr)
873  return 1;
874 
875  /* check to see if duration is constant for all clusters */
876  if (!track->entry)
877  return 0;
878  first_duration = get_cluster_duration(track, 0);
879  for (i = 1; i < track->entry; i++) {
880  if (get_cluster_duration(track, i) != first_duration)
881  return 0;
882  }
883  return first_duration;
884 }
885 
886 static int mov_write_audio_tag(AVIOContext *pb, MOVTrack *track)
887 {
888  int64_t pos = avio_tell(pb);
889  int version = 0;
890  uint32_t tag = track->tag;
891 
892  if (track->mode == MODE_MOV) {
893  if (track->timescale > UINT16_MAX) {
894  if (mov_get_lpcm_flags(track->enc->codec_id))
895  tag = AV_RL32("lpcm");
896  version = 2;
897  } else if (track->audio_vbr || mov_pcm_le_gt16(track->enc->codec_id) ||
898  mov_pcm_be_gt16(track->enc->codec_id) ||
899  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
901  track->enc->codec_id == AV_CODEC_ID_QDM2) {
902  version = 1;
903  }
904  }
905 
906  avio_wb32(pb, 0); /* size */
907  avio_wl32(pb, tag); // store it byteswapped
908  avio_wb32(pb, 0); /* Reserved */
909  avio_wb16(pb, 0); /* Reserved */
910  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
911 
912  /* SoundDescription */
913  avio_wb16(pb, version); /* Version */
914  avio_wb16(pb, 0); /* Revision level */
915  avio_wb32(pb, 0); /* Reserved */
916 
917  if (version == 2) {
918  avio_wb16(pb, 3);
919  avio_wb16(pb, 16);
920  avio_wb16(pb, 0xfffe);
921  avio_wb16(pb, 0);
922  avio_wb32(pb, 0x00010000);
923  avio_wb32(pb, 72);
924  avio_wb64(pb, av_double2int(track->enc->sample_rate));
925  avio_wb32(pb, track->enc->channels);
926  avio_wb32(pb, 0x7F000000);
929  avio_wb32(pb, track->sample_size);
930  avio_wb32(pb, get_samples_per_packet(track));
931  } else {
932  if (track->mode == MODE_MOV) {
933  avio_wb16(pb, track->enc->channels);
934  if (track->enc->codec_id == AV_CODEC_ID_PCM_U8 ||
935  track->enc->codec_id == AV_CODEC_ID_PCM_S8)
936  avio_wb16(pb, 8); /* bits per sample */
937  else if (track->enc->codec_id == AV_CODEC_ID_ADPCM_G726)
938  avio_wb16(pb, track->enc->bits_per_coded_sample);
939  else
940  avio_wb16(pb, 16);
941  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
942  } else { /* reserved for mp4/3gp */
943  avio_wb16(pb, 2);
944  avio_wb16(pb, 16);
945  avio_wb16(pb, 0);
946  }
947 
948  avio_wb16(pb, 0); /* packet size (= 0) */
949  avio_wb16(pb, track->enc->sample_rate <= UINT16_MAX ?
950  track->enc->sample_rate : 0);
951  avio_wb16(pb, 0); /* Reserved */
952  }
953 
954  if (version == 1) { /* SoundDescription V1 extended info */
955  if (mov_pcm_le_gt16(track->enc->codec_id) ||
956  mov_pcm_be_gt16(track->enc->codec_id))
957  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
958  else
959  avio_wb32(pb, track->enc->frame_size); /* Samples per packet */
960  avio_wb32(pb, track->sample_size / track->enc->channels); /* Bytes per packet */
961  avio_wb32(pb, track->sample_size); /* Bytes per frame */
962  avio_wb32(pb, 2); /* Bytes per sample */
963  }
964 
965  if (track->mode == MODE_MOV &&
966  (track->enc->codec_id == AV_CODEC_ID_AAC ||
967  track->enc->codec_id == AV_CODEC_ID_AC3 ||
968  track->enc->codec_id == AV_CODEC_ID_EAC3 ||
969  track->enc->codec_id == AV_CODEC_ID_AMR_NB ||
970  track->enc->codec_id == AV_CODEC_ID_ALAC ||
971  track->enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
973  track->enc->codec_id == AV_CODEC_ID_QDM2 ||
974  (mov_pcm_le_gt16(track->enc->codec_id) && version==1) ||
975  (mov_pcm_be_gt16(track->enc->codec_id) && version==1)))
976  mov_write_wave_tag(pb, track);
977  else if (track->tag == MKTAG('m','p','4','a'))
978  mov_write_esds_tag(pb, track);
979  else if (track->enc->codec_id == AV_CODEC_ID_AMR_NB)
980  mov_write_amr_tag(pb, track);
981  else if (track->enc->codec_id == AV_CODEC_ID_AC3)
982  mov_write_ac3_tag(pb, track);
983  else if (track->enc->codec_id == AV_CODEC_ID_EAC3)
984  mov_write_eac3_tag(pb, track);
985  else if (track->enc->codec_id == AV_CODEC_ID_ALAC)
986  mov_write_extradata_tag(pb, track);
987  else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO)
988  mov_write_wfex_tag(pb, track);
989  else if (track->vos_len > 0)
990  mov_write_glbl_tag(pb, track);
991 
992  if (track->mode == MODE_MOV && track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
993  mov_write_chan_tag(pb, track);
994 
995  return update_size(pb, pos);
996 }
997 
999 {
1000  avio_wb32(pb, 0xf); /* size */
1001  ffio_wfourcc(pb, "d263");
1002  ffio_wfourcc(pb, "FFMP");
1003  avio_w8(pb, 0); /* decoder version */
1004  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1005  avio_w8(pb, 0xa); /* level */
1006  avio_w8(pb, 0); /* profile */
1007  return 0xf;
1008 }
1009 
1010 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1011 {
1012  int64_t pos = avio_tell(pb);
1013 
1014  avio_wb32(pb, 0);
1015  ffio_wfourcc(pb, "avcC");
1016  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1017  return update_size(pb, pos);
1018 }
1019 
1020 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1021 {
1022  int64_t pos = avio_tell(pb);
1023 
1024  avio_wb32(pb, 0);
1025  ffio_wfourcc(pb, "hvcC");
1026  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1027  return update_size(pb, pos);
1028 }
1029 
1030 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1031 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1032 {
1033  int i;
1034  avio_wb32(pb, 24); /* size */
1035  ffio_wfourcc(pb, "ACLR");
1036  ffio_wfourcc(pb, "ACLR");
1037  ffio_wfourcc(pb, "0001");
1038  if (track->enc->color_range == AVCOL_RANGE_MPEG) { /* Legal range (16-235) */
1039  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1040  } else { /* Full range (0-255) */
1041  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1042  }
1043  avio_wb32(pb, 0); /* unknown */
1044 
1045  avio_wb32(pb, 24); /* size */
1046  ffio_wfourcc(pb, "APRG");
1047  ffio_wfourcc(pb, "APRG");
1048  ffio_wfourcc(pb, "0001");
1049  avio_wb32(pb, 1); /* unknown */
1050  avio_wb32(pb, 0); /* unknown */
1051 
1052  avio_wb32(pb, 120); /* size */
1053  ffio_wfourcc(pb, "ARES");
1054  ffio_wfourcc(pb, "ARES");
1055  ffio_wfourcc(pb, "0001");
1056  avio_wb32(pb, AV_RB32(track->vos_data + 0x28)); /* dnxhd cid, some id ? */
1057  avio_wb32(pb, track->enc->width);
1058  /* values below are based on samples created with quicktime and avid codecs */
1059  if (track->vos_data[5] & 2) { // interlaced
1060  avio_wb32(pb, track->enc->height / 2);
1061  avio_wb32(pb, 2); /* unknown */
1062  avio_wb32(pb, 0); /* unknown */
1063  avio_wb32(pb, 4); /* unknown */
1064  } else {
1065  avio_wb32(pb, track->enc->height);
1066  avio_wb32(pb, 1); /* unknown */
1067  avio_wb32(pb, 0); /* unknown */
1068  if (track->enc->height == 1080)
1069  avio_wb32(pb, 5); /* unknown */
1070  else
1071  avio_wb32(pb, 6); /* unknown */
1072  }
1073  /* padding */
1074  for (i = 0; i < 10; i++)
1075  avio_wb64(pb, 0);
1076 
1077  /* extra padding for stsd needed */
1078  avio_wb32(pb, 0);
1079  return 0;
1080 }
1081 
1083 {
1084  int tag = track->enc->codec_tag;
1085 
1087  return 0;
1088 
1089  if (track->enc->codec_id == AV_CODEC_ID_H264) tag = MKTAG('a','v','c','1');
1090  else if (track->enc->codec_id == AV_CODEC_ID_HEVC) tag = MKTAG('h','e','v','1');
1091  else if (track->enc->codec_id == AV_CODEC_ID_AC3) tag = MKTAG('a','c','-','3');
1092  else if (track->enc->codec_id == AV_CODEC_ID_EAC3) tag = MKTAG('e','c','-','3');
1093  else if (track->enc->codec_id == AV_CODEC_ID_DIRAC) tag = MKTAG('d','r','a','c');
1094  else if (track->enc->codec_id == AV_CODEC_ID_MOV_TEXT) tag = MKTAG('t','x','3','g');
1095  else if (track->enc->codec_id == AV_CODEC_ID_VC1) tag = MKTAG('v','c','-','1');
1096  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
1097  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
1098  else if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE) tag = MKTAG('m','p','4','s');
1099 
1100  return tag;
1101 }
1102 
1103 static const AVCodecTag codec_ipod_tags[] = {
1104  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1105  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1106  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1107  { AV_CODEC_ID_ALAC, MKTAG('a','l','a','c') },
1108  { AV_CODEC_ID_AC3, MKTAG('a','c','-','3') },
1109  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1110  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','e','x','t') },
1111  { AV_CODEC_ID_NONE, 0 },
1112 };
1113 
1115 {
1116  int tag = track->enc->codec_tag;
1117 
1118  // keep original tag for subs, ipod supports both formats
1119  if (!(track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE &&
1120  (tag == MKTAG('t', 'x', '3', 'g') ||
1121  tag == MKTAG('t', 'e', 'x', 't'))))
1122  tag = ff_codec_get_tag(codec_ipod_tags, track->enc->codec_id);
1123 
1124  if (!av_match_ext(s->filename, "m4a") &&
1125  !av_match_ext(s->filename, "m4b") &&
1126  !av_match_ext(s->filename, "m4v"))
1127  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a, .m4v nor .m4b "
1128  "Quicktime/Ipod might not play the file\n");
1129 
1130  return tag;
1131 }
1132 
1134 {
1135  int tag;
1136 
1137  if (track->enc->width == 720) { /* SD */
1138  if (track->enc->height == 480) { /* NTSC */
1139  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1140  else tag = MKTAG('d','v','c',' ');
1141  }else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1142  else if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1143  else tag = MKTAG('d','v','p','p');
1144  } else if (track->enc->height == 720) { /* HD 720 line */
1145  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1146  else tag = MKTAG('d','v','h','p');
1147  } else if (track->enc->height == 1080) { /* HD 1080 line */
1148  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1149  else tag = MKTAG('d','v','h','6');
1150  } else {
1151  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1152  return 0;
1153  }
1154 
1155  return tag;
1156 }
1157 
1159 {
1160  AVRational rate = {st->codec->time_base.den, st->codec->time_base.num};
1161  /* if the codec time base makes no sense, try to fallback on stream frame rate */
1162  if (av_timecode_check_frame_rate(rate) < 0) {
1163  av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
1164  rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
1165  rate = st->avg_frame_rate;
1166  }
1167 
1168  return rate;
1169 }
1170 
1172 {
1173  int tag = track->enc->codec_tag;
1175  AVStream *st = track->st;
1176  int rate = av_q2d(find_fps(s, st));
1177 
1178  if (!tag)
1179  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1180 
1181  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P) {
1182  if (track->enc->width == 1280 && track->enc->height == 720) {
1183  if (!interlaced) {
1184  if (rate == 24) tag = MKTAG('x','d','v','4');
1185  else if (rate == 25) tag = MKTAG('x','d','v','5');
1186  else if (rate == 30) tag = MKTAG('x','d','v','1');
1187  else if (rate == 50) tag = MKTAG('x','d','v','a');
1188  else if (rate == 60) tag = MKTAG('x','d','v','9');
1189  }
1190  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1191  if (!interlaced) {
1192  if (rate == 24) tag = MKTAG('x','d','v','6');
1193  else if (rate == 25) tag = MKTAG('x','d','v','7');
1194  else if (rate == 30) tag = MKTAG('x','d','v','8');
1195  } else {
1196  if (rate == 25) tag = MKTAG('x','d','v','3');
1197  else if (rate == 30) tag = MKTAG('x','d','v','2');
1198  }
1199  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1200  if (!interlaced) {
1201  if (rate == 24) tag = MKTAG('x','d','v','d');
1202  else if (rate == 25) tag = MKTAG('x','d','v','e');
1203  else if (rate == 30) tag = MKTAG('x','d','v','f');
1204  } else {
1205  if (rate == 25) tag = MKTAG('x','d','v','c');
1206  else if (rate == 30) tag = MKTAG('x','d','v','b');
1207  }
1208  }
1209  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1210  if (track->enc->width == 1280 && track->enc->height == 720) {
1211  if (!interlaced) {
1212  if (rate == 24) tag = MKTAG('x','d','5','4');
1213  else if (rate == 25) tag = MKTAG('x','d','5','5');
1214  else if (rate == 30) tag = MKTAG('x','d','5','1');
1215  else if (rate == 50) tag = MKTAG('x','d','5','a');
1216  else if (rate == 60) tag = MKTAG('x','d','5','9');
1217  }
1218  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1219  if (!interlaced) {
1220  if (rate == 24) tag = MKTAG('x','d','5','d');
1221  else if (rate == 25) tag = MKTAG('x','d','5','e');
1222  else if (rate == 30) tag = MKTAG('x','d','5','f');
1223  } else {
1224  if (rate == 25) tag = MKTAG('x','d','5','c');
1225  else if (rate == 30) tag = MKTAG('x','d','5','b');
1226  }
1227  }
1228  }
1229 
1230  return tag;
1231 }
1232 
1234 {
1235  int tag = track->enc->codec_tag;
1237  AVStream *st = track->st;
1238  int rate = av_q2d(find_fps(s, st));
1239 
1240  if (!tag)
1241  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1242 
1243  if (track->enc->pix_fmt == AV_PIX_FMT_YUV420P10) {
1244  if (track->enc->width == 960 && track->enc->height == 720) {
1245  if (!interlaced) {
1246  if (rate == 24) tag = MKTAG('a','i','5','p');
1247  else if (rate == 25) tag = MKTAG('a','i','5','q');
1248  else if (rate == 30) tag = MKTAG('a','i','5','p');
1249  else if (rate == 50) tag = MKTAG('a','i','5','q');
1250  else if (rate == 60) tag = MKTAG('a','i','5','p');
1251  }
1252  } else if (track->enc->width == 1440 && track->enc->height == 1080) {
1253  if (!interlaced) {
1254  if (rate == 24) tag = MKTAG('a','i','5','3');
1255  else if (rate == 25) tag = MKTAG('a','i','5','2');
1256  else if (rate == 30) tag = MKTAG('a','i','5','3');
1257  } else {
1258  if (rate == 50) tag = MKTAG('a','i','5','5');
1259  else if (rate == 60) tag = MKTAG('a','i','5','6');
1260  }
1261  }
1262  } else if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P10) {
1263  if (track->enc->width == 1280 && track->enc->height == 720) {
1264  if (!interlaced) {
1265  if (rate == 24) tag = MKTAG('a','i','1','p');
1266  else if (rate == 25) tag = MKTAG('a','i','1','q');
1267  else if (rate == 30) tag = MKTAG('a','i','1','p');
1268  else if (rate == 50) tag = MKTAG('a','i','1','q');
1269  else if (rate == 60) tag = MKTAG('a','i','1','p');
1270  }
1271  } else if (track->enc->width == 1920 && track->enc->height == 1080) {
1272  if (!interlaced) {
1273  if (rate == 24) tag = MKTAG('a','i','1','3');
1274  else if (rate == 25) tag = MKTAG('a','i','1','2');
1275  else if (rate == 30) tag = MKTAG('a','i','1','3');
1276  } else {
1277  if (rate == 25) tag = MKTAG('a','i','1','5');
1278  else if (rate == 50) tag = MKTAG('a','i','1','5');
1279  else if (rate == 60) tag = MKTAG('a','i','1','6');
1280  }
1281  } else if ( track->enc->width == 4096 && track->enc->height == 2160
1282  || track->enc->width == 3840 && track->enc->height == 2160
1283  || track->enc->width == 2048 && track->enc->height == 1080) {
1284  tag = MKTAG('a','i','v','x');
1285  }
1286  }
1287 
1288  return tag;
1289 }
1290 
1291 static const struct {
1293  uint32_t tag;
1294  unsigned bps;
1295 } mov_pix_fmt_tags[] = {
1296  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1297  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1298  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1299  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1300  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1301  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1302  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1303  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1304  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1305  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1306  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1307  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1308  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1309  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1310  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1311 };
1312 
1314 {
1315  int tag = track->enc->codec_tag;
1316  int i;
1317  enum AVPixelFormat pix_fmt;
1318 
1319  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1320  if (track->enc->pix_fmt == mov_pix_fmt_tags[i].pix_fmt) {
1321  tag = mov_pix_fmt_tags[i].tag;
1322  track->enc->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1323  if (track->enc->codec_tag == mov_pix_fmt_tags[i].tag)
1324  break;
1325  }
1326  }
1327 
1329  track->enc->bits_per_coded_sample);
1330  if (tag == MKTAG('r','a','w',' ') &&
1331  track->enc->pix_fmt != pix_fmt &&
1332  track->enc->pix_fmt != AV_PIX_FMT_NONE)
1333  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1334  av_get_pix_fmt_name(track->enc->pix_fmt));
1335  return tag;
1336 }
1337 
1339 {
1340  int tag = track->enc->codec_tag;
1341 
1342  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1343  (track->enc->codec_id == AV_CODEC_ID_DVVIDEO ||
1344  track->enc->codec_id == AV_CODEC_ID_RAWVIDEO ||
1345  track->enc->codec_id == AV_CODEC_ID_H263 ||
1346  track->enc->codec_id == AV_CODEC_ID_H264 ||
1347  track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1348  av_get_bits_per_sample(track->enc->codec_id)))) { // pcm audio
1349  if (track->enc->codec_id == AV_CODEC_ID_DVVIDEO)
1350  tag = mov_get_dv_codec_tag(s, track);
1351  else if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO)
1352  tag = mov_get_rawvideo_codec_tag(s, track);
1353  else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1354  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1355  else if (track->enc->codec_id == AV_CODEC_ID_H264)
1356  tag = mov_get_h264_codec_tag(s, track);
1357  else if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1359  if (!tag) { // if no mac fcc found, try with Microsoft tags
1361  if (tag)
1362  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1363  "the file may be unplayable!\n");
1364  }
1365  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1367  if (!tag) { // if no mac fcc found, try with Microsoft tags
1368  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->enc->codec_id);
1369  if (ms_tag) {
1370  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1371  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1372  "the file may be unplayable!\n");
1373  }
1374  }
1375  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1377  }
1378 
1379  return tag;
1380 }
1381 
1382 static const AVCodecTag codec_3gp_tags[] = {
1383  { AV_CODEC_ID_H263, MKTAG('s','2','6','3') },
1384  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1385  { AV_CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
1386  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1387  { AV_CODEC_ID_AMR_NB, MKTAG('s','a','m','r') },
1388  { AV_CODEC_ID_AMR_WB, MKTAG('s','a','w','b') },
1389  { AV_CODEC_ID_MOV_TEXT, MKTAG('t','x','3','g') },
1390  { AV_CODEC_ID_NONE, 0 },
1391 };
1392 
1393 static const AVCodecTag codec_f4v_tags[] = { // XXX: add GIF/PNG/JPEG?
1394  { AV_CODEC_ID_MP3, MKTAG('.','m','p','3') },
1395  { AV_CODEC_ID_AAC, MKTAG('m','p','4','a') },
1396  { AV_CODEC_ID_H264, MKTAG('a','v','c','1') },
1397  { AV_CODEC_ID_VP6A, MKTAG('V','P','6','A') },
1398  { AV_CODEC_ID_VP6F, MKTAG('V','P','6','F') },
1399  { AV_CODEC_ID_NONE, 0 },
1400 };
1401 
1403 {
1404  int tag;
1405 
1406  if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
1407  tag = mp4_get_codec_tag(s, track);
1408  else if (track->mode == MODE_ISM) {
1409  tag = mp4_get_codec_tag(s, track);
1410  if (!tag && track->enc->codec_id == AV_CODEC_ID_WMAPRO)
1411  tag = MKTAG('w', 'm', 'a', ' ');
1412  } else if (track->mode == MODE_IPOD)
1413  tag = ipod_get_codec_tag(s, track);
1414  else if (track->mode & MODE_3GP)
1415  tag = ff_codec_get_tag(codec_3gp_tags, track->enc->codec_id);
1416  else if (track->mode == MODE_F4V)
1417  tag = ff_codec_get_tag(codec_f4v_tags, track->enc->codec_id);
1418  else
1419  tag = mov_get_codec_tag(s, track);
1420 
1421  return tag;
1422 }
1423 
1424 /** Write uuid atom.
1425  * Needed to make file play in iPods running newest firmware
1426  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1427  */
1429 {
1430  avio_wb32(pb, 28);
1431  ffio_wfourcc(pb, "uuid");
1432  avio_wb32(pb, 0x6b6840f2);
1433  avio_wb32(pb, 0x5f244fc5);
1434  avio_wb32(pb, 0xba39a51b);
1435  avio_wb32(pb, 0xcf0323f3);
1436  avio_wb32(pb, 0x0);
1437  return 28;
1438 }
1439 
1440 static const uint16_t fiel_data[] = {
1441  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1442 };
1443 
1444 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track)
1445 {
1446  unsigned mov_field_order = 0;
1447  if (track->enc->field_order < FF_ARRAY_ELEMS(fiel_data))
1448  mov_field_order = fiel_data[track->enc->field_order];
1449  else
1450  return 0;
1451  avio_wb32(pb, 10);
1452  ffio_wfourcc(pb, "fiel");
1453  avio_wb16(pb, mov_field_order);
1454  return 10;
1455 }
1456 
1458 {
1459  int64_t pos = avio_tell(pb);
1460  avio_wb32(pb, 0); /* size */
1461  avio_wl32(pb, track->tag); // store it byteswapped
1462  avio_wb32(pb, 0); /* Reserved */
1463  avio_wb16(pb, 0); /* Reserved */
1464  avio_wb16(pb, 1); /* Data-reference index */
1465 
1466  if (track->enc->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1467  mov_write_esds_tag(pb, track);
1468  else if (track->enc->extradata_size)
1469  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1470 
1471  return update_size(pb, pos);
1472 }
1473 
1474 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1475 {
1476  AVRational sar;
1477  av_reduce(&sar.num, &sar.den, track->enc->sample_aspect_ratio.num,
1478  track->enc->sample_aspect_ratio.den, INT_MAX);
1479 
1480  avio_wb32(pb, 16);
1481  ffio_wfourcc(pb, "pasp");
1482  avio_wb32(pb, sar.num);
1483  avio_wb32(pb, sar.den);
1484  return 16;
1485 }
1486 
1487 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
1488 {
1489  AVDictionaryEntry *encoder;
1490  int xdcam_res = (track->enc->width == 1280 && track->enc->height == 720)
1491  || (track->enc->width == 1440 && track->enc->height == 1080)
1492  || (track->enc->width == 1920 && track->enc->height == 1080);
1493 
1494  if (track->mode == MODE_MOV &&
1495  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
1496  av_strlcpy(compressor_name, encoder->value, 32);
1497  } else if (track->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
1499  AVStream *st = track->st;
1500  int rate = av_q2d(find_fps(NULL, st));
1501  av_strlcatf(compressor_name, len, "XDCAM");
1502  if (track->enc->pix_fmt == AV_PIX_FMT_YUV422P) {
1503  av_strlcatf(compressor_name, len, " HD422");
1504  } else if(track->enc->width == 1440) {
1505  av_strlcatf(compressor_name, len, " HD");
1506  } else
1507  av_strlcatf(compressor_name, len, " EX");
1508 
1509  av_strlcatf(compressor_name, len, " %d%c", track->enc->height, interlaced ? 'i' : 'p');
1510 
1511  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
1512  }
1513 }
1514 
1516 {
1517  int64_t pos = avio_tell(pb);
1518  char compressor_name[32] = { 0 };
1519 
1520  avio_wb32(pb, 0); /* size */
1521  avio_wl32(pb, track->tag); // store it byteswapped
1522  avio_wb32(pb, 0); /* Reserved */
1523  avio_wb16(pb, 0); /* Reserved */
1524  avio_wb16(pb, 1); /* Data-reference index */
1525 
1526  avio_wb16(pb, 0); /* Codec stream version */
1527  avio_wb16(pb, 0); /* Codec stream revision (=0) */
1528  if (track->mode == MODE_MOV) {
1529  ffio_wfourcc(pb, "FFMP"); /* Vendor */
1530  if (track->enc->codec_id == AV_CODEC_ID_RAWVIDEO) {
1531  avio_wb32(pb, 0); /* Temporal Quality */
1532  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
1533  } else {
1534  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
1535  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
1536  }
1537  } else {
1538  avio_wb32(pb, 0); /* Reserved */
1539  avio_wb32(pb, 0); /* Reserved */
1540  avio_wb32(pb, 0); /* Reserved */
1541  }
1542  avio_wb16(pb, track->enc->width); /* Video width */
1543  avio_wb16(pb, track->height); /* Video height */
1544  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
1545  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
1546  avio_wb32(pb, 0); /* Data size (= 0) */
1547  avio_wb16(pb, 1); /* Frame count (= 1) */
1548 
1549  /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
1550  find_compressor(compressor_name, 32, track);
1551  avio_w8(pb, strlen(compressor_name));
1552  avio_write(pb, compressor_name, 31);
1553 
1554  if (track->mode == MODE_MOV && track->enc->bits_per_coded_sample)
1555  avio_wb16(pb, track->enc->bits_per_coded_sample);
1556  else
1557  avio_wb16(pb, 0x18); /* Reserved */
1558  avio_wb16(pb, 0xffff); /* Reserved */
1559  if (track->tag == MKTAG('m','p','4','v'))
1560  mov_write_esds_tag(pb, track);
1561  else if (track->enc->codec_id == AV_CODEC_ID_H263)
1562  mov_write_d263_tag(pb);
1563  else if (track->enc->codec_id == AV_CODEC_ID_AVUI ||
1564  track->enc->codec_id == AV_CODEC_ID_SVQ3) {
1565  mov_write_extradata_tag(pb, track);
1566  avio_wb32(pb, 0);
1567  } else if (track->enc->codec_id == AV_CODEC_ID_DNXHD)
1568  mov_write_avid_tag(pb, track);
1569  else if (track->enc->codec_id == AV_CODEC_ID_HEVC)
1570  mov_write_hvcc_tag(pb, track);
1571  else if (track->enc->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
1572  mov_write_avcc_tag(pb, track);
1573  if (track->mode == MODE_IPOD)
1575  } else if (track->enc->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
1576  mov_write_dvc1_tag(pb, track);
1577  else if (track->enc->codec_id == AV_CODEC_ID_VP6F ||
1578  track->enc->codec_id == AV_CODEC_ID_VP6A) {
1579  /* Don't write any potential extradata here - the cropping
1580  * is signalled via the normal width/height fields. */
1581  } else if (track->vos_len > 0)
1582  mov_write_glbl_tag(pb, track);
1583 
1584  if (track->enc->codec_id != AV_CODEC_ID_H264 &&
1585  track->enc->codec_id != AV_CODEC_ID_MPEG4 &&
1586  track->enc->codec_id != AV_CODEC_ID_DNXHD)
1587  if (track->enc->field_order != AV_FIELD_UNKNOWN)
1588  mov_write_fiel_tag(pb, track);
1589 
1590  if (track->enc->sample_aspect_ratio.den && track->enc->sample_aspect_ratio.num &&
1591  track->enc->sample_aspect_ratio.den != track->enc->sample_aspect_ratio.num) {
1592  mov_write_pasp_tag(pb, track);
1593  }
1594 
1595  return update_size(pb, pos);
1596 }
1597 
1598 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
1599 {
1600  int64_t pos = avio_tell(pb);
1601  avio_wb32(pb, 0); /* size */
1602  ffio_wfourcc(pb, "rtp ");
1603  avio_wb32(pb, 0); /* Reserved */
1604  avio_wb16(pb, 0); /* Reserved */
1605  avio_wb16(pb, 1); /* Data-reference index */
1606 
1607  avio_wb16(pb, 1); /* Hint track version */
1608  avio_wb16(pb, 1); /* Highest compatible version */
1609  avio_wb32(pb, track->max_packet_size); /* Max packet size */
1610 
1611  avio_wb32(pb, 12); /* size */
1612  ffio_wfourcc(pb, "tims");
1613  avio_wb32(pb, track->timescale);
1614 
1615  return update_size(pb, pos);
1616 }
1617 
1618 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
1619 {
1620  uint64_t str_size =strlen(reel_name);
1621  int64_t pos = avio_tell(pb);
1622 
1623  if (str_size >= UINT16_MAX){
1624  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
1625  avio_wb16(pb, 0);
1626  return AVERROR(EINVAL);
1627  }
1628 
1629  avio_wb32(pb, 0); /* size */
1630  ffio_wfourcc(pb, "name"); /* Data format */
1631  avio_wb16(pb, str_size); /* string size */
1632  avio_wb16(pb, track->language); /* langcode */
1633  avio_write(pb, reel_name, str_size); /* reel name */
1634  return update_size(pb,pos);
1635 }
1636 
1637 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
1638 {
1639  int64_t pos = avio_tell(pb);
1640 #if 1
1641  int frame_duration = av_rescale(track->timescale, track->enc->time_base.num, track->enc->time_base.den);
1642  int nb_frames = 1.0/av_q2d(track->enc->time_base) + 0.5;
1643  AVDictionaryEntry *t = NULL;
1644 
1645  if (nb_frames > 255) {
1646  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
1647  return AVERROR(EINVAL);
1648  }
1649 
1650  avio_wb32(pb, 0); /* size */
1651  ffio_wfourcc(pb, "tmcd"); /* Data format */
1652  avio_wb32(pb, 0); /* Reserved */
1653  avio_wb32(pb, 1); /* Data reference index */
1654  avio_wb32(pb, 0); /* Flags */
1655  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
1656  avio_wb32(pb, track->timescale); /* Timescale */
1657  avio_wb32(pb, frame_duration); /* Frame duration */
1658  avio_w8(pb, nb_frames); /* Number of frames */
1659  avio_w8(pb, 0); /* Reserved */
1660 
1661  if (track->st)
1662  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
1663 
1664  if (t && utf8len(t->value))
1665  mov_write_source_reference_tag(pb, track, t->value);
1666  else
1667  avio_wb16(pb, 0); /* zero size */
1668 #else
1669 
1670  avio_wb32(pb, 0); /* size */
1671  ffio_wfourcc(pb, "tmcd"); /* Data format */
1672  avio_wb32(pb, 0); /* Reserved */
1673  avio_wb32(pb, 1); /* Data reference index */
1674  if (track->enc->extradata_size)
1675  avio_write(pb, track->enc->extradata, track->enc->extradata_size);
1676 #endif
1677  return update_size(pb, pos);
1678 }
1679 
1680 static int mov_write_stsd_tag(AVIOContext *pb, MOVTrack *track)
1681 {
1682  int64_t pos = avio_tell(pb);
1683  avio_wb32(pb, 0); /* size */
1684  ffio_wfourcc(pb, "stsd");
1685  avio_wb32(pb, 0); /* version & flags */
1686  avio_wb32(pb, 1); /* entry count */
1687  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
1688  mov_write_video_tag(pb, track);
1689  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
1690  mov_write_audio_tag(pb, track);
1691  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)
1692  mov_write_subtitle_tag(pb, track);
1693  else if (track->enc->codec_tag == MKTAG('r','t','p',' '))
1694  mov_write_rtp_tag(pb, track);
1695  else if (track->enc->codec_tag == MKTAG('t','m','c','d'))
1696  mov_write_tmcd_tag(pb, track);
1697  return update_size(pb, pos);
1698 }
1699 
1700 static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
1701 {
1702  MOVStts *ctts_entries;
1703  uint32_t entries = 0;
1704  uint32_t atom_size;
1705  int i;
1706 
1707  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
1708  ctts_entries[0].count = 1;
1709  ctts_entries[0].duration = track->cluster[0].cts;
1710  for (i = 1; i < track->entry; i++) {
1711  if (track->cluster[i].cts == ctts_entries[entries].duration) {
1712  ctts_entries[entries].count++; /* compress */
1713  } else {
1714  entries++;
1715  ctts_entries[entries].duration = track->cluster[i].cts;
1716  ctts_entries[entries].count = 1;
1717  }
1718  }
1719  entries++; /* last one */
1720  atom_size = 16 + (entries * 8);
1721  avio_wb32(pb, atom_size); /* size */
1722  ffio_wfourcc(pb, "ctts");
1723  avio_wb32(pb, 0); /* version & flags */
1724  avio_wb32(pb, entries); /* entry count */
1725  for (i = 0; i < entries; i++) {
1726  avio_wb32(pb, ctts_entries[i].count);
1727  avio_wb32(pb, ctts_entries[i].duration);
1728  }
1729  av_free(ctts_entries);
1730  return atom_size;
1731 }
1732 
1733 /* Time to sample atom */
1734 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
1735 {
1736  MOVStts *stts_entries;
1737  uint32_t entries = -1;
1738  uint32_t atom_size;
1739  int i;
1740 
1741  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
1742  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
1743  stts_entries[0].count = track->sample_count;
1744  stts_entries[0].duration = 1;
1745  entries = 1;
1746  } else {
1747  stts_entries = track->entry ?
1748  av_malloc_array(track->entry, sizeof(*stts_entries)) : /* worst case */
1749  NULL;
1750  for (i = 0; i < track->entry; i++) {
1751  int duration = get_cluster_duration(track, i);
1752  if (i && duration == stts_entries[entries].duration) {
1753  stts_entries[entries].count++; /* compress */
1754  } else {
1755  entries++;
1756  stts_entries[entries].duration = duration;
1757  stts_entries[entries].count = 1;
1758  }
1759  }
1760  entries++; /* last one */
1761  }
1762  atom_size = 16 + (entries * 8);
1763  avio_wb32(pb, atom_size); /* size */
1764  ffio_wfourcc(pb, "stts");
1765  avio_wb32(pb, 0); /* version & flags */
1766  avio_wb32(pb, entries); /* entry count */
1767  for (i = 0; i < entries; i++) {
1768  avio_wb32(pb, stts_entries[i].count);
1769  avio_wb32(pb, stts_entries[i].duration);
1770  }
1771  av_free(stts_entries);
1772  return atom_size;
1773 }
1774 
1776 {
1777  avio_wb32(pb, 28); /* size */
1778  ffio_wfourcc(pb, "dref");
1779  avio_wb32(pb, 0); /* version & flags */
1780  avio_wb32(pb, 1); /* entry count */
1781 
1782  avio_wb32(pb, 0xc); /* size */
1783  //FIXME add the alis and rsrc atom
1784  ffio_wfourcc(pb, "url ");
1785  avio_wb32(pb, 1); /* version & flags */
1786 
1787  return 28;
1788 }
1789 
1790 static int mov_write_stbl_tag(AVIOContext *pb, MOVTrack *track)
1791 {
1792  int64_t pos = avio_tell(pb);
1793  avio_wb32(pb, 0); /* size */
1794  ffio_wfourcc(pb, "stbl");
1795  mov_write_stsd_tag(pb, track);
1796  mov_write_stts_tag(pb, track);
1797  if ((track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
1798  track->enc->codec_tag == MKTAG('r','t','p',' ')) &&
1799  track->has_keyframes && track->has_keyframes < track->entry)
1800  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
1801  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
1803  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO &&
1804  track->flags & MOV_TRACK_CTTS)
1805  mov_write_ctts_tag(pb, track);
1806  mov_write_stsc_tag(pb, track);
1807  mov_write_stsz_tag(pb, track);
1808  mov_write_stco_tag(pb, track);
1809  return update_size(pb, pos);
1810 }
1811 
1813 {
1814  int64_t pos = avio_tell(pb);
1815  avio_wb32(pb, 0); /* size */
1816  ffio_wfourcc(pb, "dinf");
1817  mov_write_dref_tag(pb);
1818  return update_size(pb, pos);
1819 }
1820 
1822 {
1823  avio_wb32(pb, 12);
1824  ffio_wfourcc(pb, "nmhd");
1825  avio_wb32(pb, 0);
1826  return 12;
1827 }
1828 
1829 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
1830 {
1831  int64_t pos = avio_tell(pb);
1832  const char *font = "Lucida Grande";
1833  avio_wb32(pb, 0); /* size */
1834  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
1835  avio_wb32(pb, 0); /* version & flags */
1836  avio_wb16(pb, 0); /* text font */
1837  avio_wb16(pb, 0); /* text face */
1838  avio_wb16(pb, 12); /* text size */
1839  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
1840  avio_wb16(pb, 0x0000); /* text color (red) */
1841  avio_wb16(pb, 0x0000); /* text color (green) */
1842  avio_wb16(pb, 0x0000); /* text color (blue) */
1843  avio_wb16(pb, 0xffff); /* background color (red) */
1844  avio_wb16(pb, 0xffff); /* background color (green) */
1845  avio_wb16(pb, 0xffff); /* background color (blue) */
1846  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
1847  avio_write(pb, font, strlen(font)); /* font name */
1848  return update_size(pb, pos);
1849 }
1850 
1851 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
1852 {
1853  int64_t pos = avio_tell(pb);
1854  avio_wb32(pb, 0); /* size */
1855  ffio_wfourcc(pb, "gmhd");
1856  avio_wb32(pb, 0x18); /* gmin size */
1857  ffio_wfourcc(pb, "gmin");/* generic media info */
1858  avio_wb32(pb, 0); /* version & flags */
1859  avio_wb16(pb, 0x40); /* graphics mode = */
1860  avio_wb16(pb, 0x8000); /* opColor (r?) */
1861  avio_wb16(pb, 0x8000); /* opColor (g?) */
1862  avio_wb16(pb, 0x8000); /* opColor (b?) */
1863  avio_wb16(pb, 0); /* balance */
1864  avio_wb16(pb, 0); /* reserved */
1865 
1866  /*
1867  * This special text atom is required for
1868  * Apple Quicktime chapters. The contents
1869  * don't appear to be documented, so the
1870  * bytes are copied verbatim.
1871  */
1872  if (track->tag != MKTAG('c','6','0','8')) {
1873  avio_wb32(pb, 0x2C); /* size */
1874  ffio_wfourcc(pb, "text");
1875  avio_wb16(pb, 0x01);
1876  avio_wb32(pb, 0x00);
1877  avio_wb32(pb, 0x00);
1878  avio_wb32(pb, 0x00);
1879  avio_wb32(pb, 0x01);
1880  avio_wb32(pb, 0x00);
1881  avio_wb32(pb, 0x00);
1882  avio_wb32(pb, 0x00);
1883  avio_wb32(pb, 0x00004000);
1884  avio_wb16(pb, 0x0000);
1885  }
1886 
1887  if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1888  int64_t tmcd_pos = avio_tell(pb);
1889  avio_wb32(pb, 0); /* size */
1890  ffio_wfourcc(pb, "tmcd");
1891  mov_write_tcmi_tag(pb, track);
1892  update_size(pb, tmcd_pos);
1893  }
1894  return update_size(pb, pos);
1895 }
1896 
1898 {
1899  avio_wb32(pb, 16); /* size */
1900  ffio_wfourcc(pb, "smhd");
1901  avio_wb32(pb, 0); /* version & flags */
1902  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
1903  avio_wb16(pb, 0); /* reserved */
1904  return 16;
1905 }
1906 
1908 {
1909  avio_wb32(pb, 0x14); /* size (always 0x14) */
1910  ffio_wfourcc(pb, "vmhd");
1911  avio_wb32(pb, 0x01); /* version & flags */
1912  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
1913  return 0x14;
1914 }
1915 
1916 static int is_clcp_track(MOVTrack *track)
1917 {
1918  return track->tag == MKTAG('c','7','0','8') ||
1919  track->tag == MKTAG('c','6','0','8');
1920 }
1921 
1922 static int mov_write_hdlr_tag(AVIOContext *pb, MOVTrack *track)
1923 {
1924  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
1925  int64_t pos = avio_tell(pb);
1926 
1927  hdlr = "dhlr";
1928  hdlr_type = "url ";
1929  descr = "DataHandler";
1930 
1931  if (track) {
1932  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
1933  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1934  hdlr_type = "vide";
1935  descr = "VideoHandler";
1936  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
1937  hdlr_type = "soun";
1938  descr = "SoundHandler";
1939  } else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1940  if (is_clcp_track(track)) {
1941  hdlr_type = "clcp";
1942  descr = "ClosedCaptionHandler";
1943  } else {
1944  if (track->tag == MKTAG('t','x','3','g')) {
1945  hdlr_type = "sbtl";
1946  } else if (track->tag == MKTAG('m','p','4','s')) {
1947  hdlr_type = "subp";
1948  } else {
1949  hdlr_type = "text";
1950  }
1951  descr = "SubtitleHandler";
1952  }
1953  } else if (track->enc->codec_tag == MKTAG('r','t','p',' ')) {
1954  hdlr_type = "hint";
1955  descr = "HintHandler";
1956  } else if (track->enc->codec_tag == MKTAG('t','m','c','d')) {
1957  hdlr_type = "tmcd";
1958  descr = "TimeCodeHandler";
1959  } else {
1960  char tag_buf[32];
1961  av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
1962  track->enc->codec_tag);
1963 
1964  av_log(track->enc, AV_LOG_WARNING,
1965  "Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
1966  tag_buf, track->enc->codec_tag);
1967  }
1968  if (track->st) {
1969  // hdlr.name is used by some players to identify the content title
1970  // of the track. So if an alternate handler description is
1971  // specified, use it.
1972  AVDictionaryEntry *t;
1973  t = av_dict_get(track->st->metadata, "handler", NULL, 0);
1974  if (t && utf8len(t->value))
1975  descr = t->value;
1976  }
1977  }
1978 
1979  avio_wb32(pb, 0); /* size */
1980  ffio_wfourcc(pb, "hdlr");
1981  avio_wb32(pb, 0); /* Version & flags */
1982  avio_write(pb, hdlr, 4); /* handler */
1983  ffio_wfourcc(pb, hdlr_type); /* handler type */
1984  avio_wb32(pb, 0); /* reserved */
1985  avio_wb32(pb, 0); /* reserved */
1986  avio_wb32(pb, 0); /* reserved */
1987  if (!track || track->mode == MODE_MOV)
1988  avio_w8(pb, strlen(descr)); /* pascal string */
1989  avio_write(pb, descr, strlen(descr)); /* handler description */
1990  if (track && track->mode != MODE_MOV)
1991  avio_w8(pb, 0); /* c string */
1992  return update_size(pb, pos);
1993 }
1994 
1996 {
1997  /* This atom must be present, but leaving the values at zero
1998  * seems harmless. */
1999  avio_wb32(pb, 28); /* size */
2000  ffio_wfourcc(pb, "hmhd");
2001  avio_wb32(pb, 0); /* version, flags */
2002  avio_wb16(pb, 0); /* maxPDUsize */
2003  avio_wb16(pb, 0); /* avgPDUsize */
2004  avio_wb32(pb, 0); /* maxbitrate */
2005  avio_wb32(pb, 0); /* avgbitrate */
2006  avio_wb32(pb, 0); /* reserved */
2007  return 28;
2008 }
2009 
2010 static int mov_write_minf_tag(AVIOContext *pb, MOVTrack *track)
2011 {
2012  int64_t pos = avio_tell(pb);
2013  avio_wb32(pb, 0); /* size */
2014  ffio_wfourcc(pb, "minf");
2015  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO)
2016  mov_write_vmhd_tag(pb);
2017  else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2018  mov_write_smhd_tag(pb);
2019  else if (track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2020  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
2021  mov_write_gmhd_tag(pb, track);
2022  } else {
2023  mov_write_nmhd_tag(pb);
2024  }
2025  } else if (track->tag == MKTAG('r','t','p',' ')) {
2026  mov_write_hmhd_tag(pb);
2027  } else if (track->tag == MKTAG('t','m','c','d')) {
2028  mov_write_gmhd_tag(pb, track);
2029  }
2030  if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
2031  mov_write_hdlr_tag(pb, NULL);
2032  mov_write_dinf_tag(pb);
2033  mov_write_stbl_tag(pb, track);
2034  return update_size(pb, pos);
2035 }
2036 
2038  MOVTrack *track)
2039 {
2040  int version = track->track_duration < INT32_MAX ? 0 : 1;
2041 
2042  if (track->mode == MODE_ISM)
2043  version = 1;
2044 
2045  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
2046  ffio_wfourcc(pb, "mdhd");
2047  avio_w8(pb, version);
2048  avio_wb24(pb, 0); /* flags */
2049  if (version == 1) {
2050  avio_wb64(pb, track->time);
2051  avio_wb64(pb, track->time);
2052  } else {
2053  avio_wb32(pb, track->time); /* creation time */
2054  avio_wb32(pb, track->time); /* modification time */
2055  }
2056  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
2057  if (!track->entry && mov->mode == MODE_ISM)
2058  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2059  else if (!track->entry)
2060  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2061  else
2062  (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
2063  avio_wb16(pb, track->language); /* language */
2064  avio_wb16(pb, 0); /* reserved (quality) */
2065 
2066  if (version != 0 && track->mode == MODE_MOV) {
2067  av_log(NULL, AV_LOG_ERROR,
2068  "FATAL error, file duration too long for timebase, this file will not be\n"
2069  "playable with quicktime. Choose a different timebase or a different\n"
2070  "container format\n");
2071  }
2072 
2073  return 32;
2074 }
2075 
2077  MOVTrack *track)
2078 {
2079  int64_t pos = avio_tell(pb);
2080  avio_wb32(pb, 0); /* size */
2081  ffio_wfourcc(pb, "mdia");
2082  mov_write_mdhd_tag(pb, mov, track);
2083  mov_write_hdlr_tag(pb, track);
2084  mov_write_minf_tag(pb, track);
2085  return update_size(pb, pos);
2086 }
2087 
2088 /* transformation matrix
2089  |a b u|
2090  |c d v|
2091  |tx ty w| */
2092 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
2093  int16_t d, int16_t tx, int16_t ty)
2094 {
2095  avio_wb32(pb, a << 16); /* 16.16 format */
2096  avio_wb32(pb, b << 16); /* 16.16 format */
2097  avio_wb32(pb, 0); /* u in 2.30 format */
2098  avio_wb32(pb, c << 16); /* 16.16 format */
2099  avio_wb32(pb, d << 16); /* 16.16 format */
2100  avio_wb32(pb, 0); /* v in 2.30 format */
2101  avio_wb32(pb, tx << 16); /* 16.16 format */
2102  avio_wb32(pb, ty << 16); /* 16.16 format */
2103  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
2104 }
2105 
2107  MOVTrack *track, AVStream *st)
2108 {
2110  track->timescale, AV_ROUND_UP);
2111  int version = duration < INT32_MAX ? 0 : 1;
2113  int rotation = 0;
2114  int group = 0;
2115 
2116 
2117  if (st) {
2118  if (mov->per_stream_grouping)
2119  group = st->index;
2120  else
2121  group = st->codec->codec_type;
2122  }
2123 
2124  if (track->flags & MOV_TRACK_ENABLED)
2125  flags |= MOV_TKHD_FLAG_ENABLED;
2126 
2127  if (track->mode == MODE_ISM)
2128  version = 1;
2129 
2130  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
2131  ffio_wfourcc(pb, "tkhd");
2132  avio_w8(pb, version);
2133  avio_wb24(pb, flags);
2134  if (version == 1) {
2135  avio_wb64(pb, track->time);
2136  avio_wb64(pb, track->time);
2137  } else {
2138  avio_wb32(pb, track->time); /* creation time */
2139  avio_wb32(pb, track->time); /* modification time */
2140  }
2141  avio_wb32(pb, track->track_id); /* track-id */
2142  avio_wb32(pb, 0); /* reserved */
2143  if (!track->entry && mov->mode == MODE_ISM)
2144  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2145  else if (!track->entry)
2146  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2147  else
2148  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
2149 
2150  avio_wb32(pb, 0); /* reserved */
2151  avio_wb32(pb, 0); /* reserved */
2152  avio_wb16(pb, 0); /* layer */
2153  avio_wb16(pb, group); /* alternate group) */
2154  /* Volume, only for audio */
2155  if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO)
2156  avio_wb16(pb, 0x0100);
2157  else
2158  avio_wb16(pb, 0);
2159  avio_wb16(pb, 0); /* reserved */
2160 
2161  /* Matrix structure */
2162  if (st && st->metadata) {
2163  AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
2164  rotation = (rot && rot->value) ? atoi(rot->value) : 0;
2165  }
2166  if (rotation == 90) {
2167  write_matrix(pb, 0, 1, -1, 0, track->enc->height, 0);
2168  } else if (rotation == 180) {
2169  write_matrix(pb, -1, 0, 0, -1, track->enc->width, track->enc->height);
2170  } else if (rotation == 270) {
2171  write_matrix(pb, 0, -1, 1, 0, 0, track->enc->width);
2172  } else {
2173  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2174  }
2175  /* Track width and height, for visual only */
2176  if (st && (track->enc->codec_type == AVMEDIA_TYPE_VIDEO ||
2177  track->enc->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
2178  if (track->mode == MODE_MOV) {
2179  avio_wb32(pb, track->enc->width << 16);
2180  avio_wb32(pb, track->height << 16);
2181  } else {
2182  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2183  if (!sample_aspect_ratio || track->height != track->enc->height)
2184  sample_aspect_ratio = 1;
2185  avio_wb32(pb, sample_aspect_ratio * track->enc->width * 0x10000);
2186  avio_wb32(pb, track->height * 0x10000);
2187  }
2188  } else {
2189  avio_wb32(pb, 0);
2190  avio_wb32(pb, 0);
2191  }
2192  return 0x5c;
2193 }
2194 
2195 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
2196 {
2198  track->enc->sample_aspect_ratio.den);
2199 
2200  int64_t pos = avio_tell(pb);
2201 
2202  avio_wb32(pb, 0); /* size */
2203  ffio_wfourcc(pb, "tapt");
2204 
2205  avio_wb32(pb, 20);
2206  ffio_wfourcc(pb, "clef");
2207  avio_wb32(pb, 0);
2208  avio_wb32(pb, width << 16);
2209  avio_wb32(pb, track->enc->height << 16);
2210 
2211  avio_wb32(pb, 20);
2212  ffio_wfourcc(pb, "prof");
2213  avio_wb32(pb, 0);
2214  avio_wb32(pb, width << 16);
2215  avio_wb32(pb, track->enc->height << 16);
2216 
2217  avio_wb32(pb, 20);
2218  ffio_wfourcc(pb, "enof");
2219  avio_wb32(pb, 0);
2220  avio_wb32(pb, track->enc->width << 16);
2221  avio_wb32(pb, track->enc->height << 16);
2222 
2223  return update_size(pb, pos);
2224 }
2225 
2226 // This box seems important for the psp playback ... without it the movie seems to hang
2228  MOVTrack *track)
2229 {
2231  track->timescale, AV_ROUND_UP);
2232  int version = duration < INT32_MAX ? 0 : 1;
2233  int entry_size, entry_count, size;
2234  int64_t delay, start_ct = track->cluster[0].cts;
2235  delay = av_rescale_rnd(track->cluster[0].dts + start_ct, MOV_TIMESCALE,
2236  track->timescale, AV_ROUND_DOWN);
2237  version |= delay < INT32_MAX ? 0 : 1;
2238 
2239  entry_size = (version == 1) ? 20 : 12;
2240  entry_count = 1 + (delay > 0);
2241  size = 24 + entry_count * entry_size;
2242 
2243  /* write the atom data */
2244  avio_wb32(pb, size);
2245  ffio_wfourcc(pb, "edts");
2246  avio_wb32(pb, size - 8);
2247  ffio_wfourcc(pb, "elst");
2248  avio_w8(pb, version);
2249  avio_wb24(pb, 0); /* flags */
2250 
2251  avio_wb32(pb, entry_count);
2252  if (delay > 0) { /* add an empty edit to delay presentation */
2253  /* In the positive delay case, the delay includes the cts
2254  * offset, and the second edit list entry below trims out
2255  * the same amount from the actual content. This makes sure
2256  * that the offsetted last sample is included in the edit
2257  * list duration as well. */
2258  if (version == 1) {
2259  avio_wb64(pb, delay);
2260  avio_wb64(pb, -1);
2261  } else {
2262  avio_wb32(pb, delay);
2263  avio_wb32(pb, -1);
2264  }
2265  avio_wb32(pb, 0x00010000);
2266  } else {
2267  /* Avoid accidentally ending up with start_ct = -1 which has got a
2268  * special meaning. Normally start_ct should end up positive or zero
2269  * here, but use FFMIN in case dts is a a small positive integer
2270  * rounded to 0 when represented in MOV_TIMESCALE units. */
2272  start_ct = -FFMIN(track->cluster[0].dts, 0);
2273  /* Note, this delay is calculated from the pts of the first sample,
2274  * ensuring that we don't reduce the duration for cases with
2275  * dts<0 pts=0. */
2276  duration += delay;
2277  }
2278 
2279  /* For fragmented files, we don't know the full length yet. Setting
2280  * duration to 0 allows us to only specify the offset, including
2281  * the rest of the content (from all future fragments) without specifying
2282  * an explicit duration. */
2283  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2284  duration = 0;
2285 
2286  /* duration */
2287  if (version == 1) {
2288  avio_wb64(pb, duration);
2289  avio_wb64(pb, start_ct);
2290  } else {
2291  avio_wb32(pb, duration);
2292  avio_wb32(pb, start_ct);
2293  }
2294  avio_wb32(pb, 0x00010000);
2295  return size;
2296 }
2297 
2298 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
2299 {
2300  avio_wb32(pb, 20); // size
2301  ffio_wfourcc(pb, "tref");
2302  avio_wb32(pb, 12); // size (subatom)
2303  avio_wl32(pb, track->tref_tag);
2304  avio_wb32(pb, track->tref_id);
2305  return 20;
2306 }
2307 
2308 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
2310 {
2311  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
2312  ffio_wfourcc(pb, "uuid");
2313  ffio_wfourcc(pb, "USMT");
2314  avio_wb32(pb, 0x21d24fce);
2315  avio_wb32(pb, 0xbb88695c);
2316  avio_wb32(pb, 0xfac9c740);
2317  avio_wb32(pb, 0x1c); // another size here!
2318  ffio_wfourcc(pb, "MTDT");
2319  avio_wb32(pb, 0x00010012);
2320  avio_wb32(pb, 0x0a);
2321  avio_wb32(pb, 0x55c40000);
2322  avio_wb32(pb, 0x1);
2323  avio_wb32(pb, 0x0);
2324  return 0x34;
2325 }
2326 
2327 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
2328 {
2329  AVFormatContext *ctx = track->rtp_ctx;
2330  char buf[1000] = "";
2331  int len;
2332 
2333  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
2334  NULL, NULL, 0, 0, ctx);
2335  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
2336  len = strlen(buf);
2337 
2338  avio_wb32(pb, len + 24);
2339  ffio_wfourcc(pb, "udta");
2340  avio_wb32(pb, len + 16);
2341  ffio_wfourcc(pb, "hnti");
2342  avio_wb32(pb, len + 8);
2343  ffio_wfourcc(pb, "sdp ");
2344  avio_write(pb, buf, len);
2345  return len + 24;
2346 }
2347 
2349  const char *tag, const char *str)
2350 {
2351  int64_t pos = avio_tell(pb);
2352  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
2353  if (!t || !utf8len(t->value))
2354  return 0;
2355 
2356  avio_wb32(pb, 0); /* size */
2357  ffio_wfourcc(pb, tag); /* type */
2358  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
2359  return update_size(pb, pos);
2360 }
2361 
2363  AVStream *st)
2364 {
2365  AVIOContext *pb_buf;
2366  int ret, size;
2367  uint8_t *buf;
2368 
2369  if (!st || mov->fc->flags & AVFMT_FLAG_BITEXACT)
2370  return 0;
2371 
2372  ret = avio_open_dyn_buf(&pb_buf);
2373  if (ret < 0)
2374  return ret;
2375 
2376  if (mov->mode & MODE_MP4)
2377  mov_write_track_metadata(pb_buf, st, "name", "title");
2378 
2379  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2380  avio_wb32(pb, size + 8);
2381  ffio_wfourcc(pb, "udta");
2382  avio_write(pb, buf, size);
2383  }
2384  av_free(buf);
2385 
2386  return 0;
2387 }
2388 
2390  MOVTrack *track, AVStream *st)
2391 {
2392  int64_t pos = avio_tell(pb);
2393  avio_wb32(pb, 0); /* size */
2394  ffio_wfourcc(pb, "trak");
2395  mov_write_tkhd_tag(pb, mov, track, st);
2396 
2397  av_assert2(mov->use_editlist >= 0);
2398 
2399 
2400  if (track->entry) {
2401  if (mov->use_editlist)
2402  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
2403  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
2404  av_log(mov->fc, AV_LOG_WARNING,
2405  "Not writing any edit list even though one would have been required\n");
2406  }
2407 
2408  if (track->tref_tag)
2409  mov_write_tref_tag(pb, track);
2410  mov_write_mdia_tag(pb, mov, track);
2411  if (track->mode == MODE_PSP)
2412  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
2413  if (track->tag == MKTAG('r','t','p',' '))
2414  mov_write_udta_sdp(pb, track);
2415  if (track->mode == MODE_MOV) {
2416  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2417  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
2418  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
2419  mov_write_tapt_tag(pb, track);
2420  }
2421  }
2422  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
2423  mov_write_tapt_tag(pb, track);
2424  }
2425  }
2426  mov_write_track_udta_tag(pb, mov, st);
2427  return update_size(pb, pos);
2428 }
2429 
2431 {
2432  int i, has_audio = 0, has_video = 0;
2433  int64_t pos = avio_tell(pb);
2434  int audio_profile = mov->iods_audio_profile;
2435  int video_profile = mov->iods_video_profile;
2436  for (i = 0; i < mov->nb_streams; i++) {
2437  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
2438  has_audio |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_AUDIO;
2439  has_video |= mov->tracks[i].enc->codec_type == AVMEDIA_TYPE_VIDEO;
2440  }
2441  }
2442  if (audio_profile < 0)
2443  audio_profile = 0xFF - has_audio;
2444  if (video_profile < 0)
2445  video_profile = 0xFF - has_video;
2446  avio_wb32(pb, 0x0); /* size */
2447  ffio_wfourcc(pb, "iods");
2448  avio_wb32(pb, 0); /* version & flags */
2449  put_descr(pb, 0x10, 7);
2450  avio_wb16(pb, 0x004f);
2451  avio_w8(pb, 0xff);
2452  avio_w8(pb, 0xff);
2453  avio_w8(pb, audio_profile);
2454  avio_w8(pb, video_profile);
2455  avio_w8(pb, 0xff);
2456  return update_size(pb, pos);
2457 }
2458 
2459 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
2460 {
2461  avio_wb32(pb, 0x20); /* size */
2462  ffio_wfourcc(pb, "trex");
2463  avio_wb32(pb, 0); /* version & flags */
2464  avio_wb32(pb, track->track_id); /* track ID */
2465  avio_wb32(pb, 1); /* default sample description index */
2466  avio_wb32(pb, 0); /* default sample duration */
2467  avio_wb32(pb, 0); /* default sample size */
2468  avio_wb32(pb, 0); /* default sample flags */
2469  return 0;
2470 }
2471 
2473 {
2474  int64_t pos = avio_tell(pb);
2475  int i;
2476  avio_wb32(pb, 0x0); /* size */
2477  ffio_wfourcc(pb, "mvex");
2478  for (i = 0; i < mov->nb_streams; i++)
2479  mov_write_trex_tag(pb, &mov->tracks[i]);
2480  return update_size(pb, pos);
2481 }
2482 
2484 {
2485  int max_track_id = 1, i;
2486  int64_t max_track_len_temp, max_track_len = 0;
2487  int version;
2488 
2489  for (i = 0; i < mov->nb_streams; i++) {
2490  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
2491  max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
2492  MOV_TIMESCALE,
2493  mov->tracks[i].timescale,
2494  AV_ROUND_UP);
2495  if (max_track_len < max_track_len_temp)
2496  max_track_len = max_track_len_temp;
2497  if (max_track_id < mov->tracks[i].track_id)
2498  max_track_id = mov->tracks[i].track_id;
2499  }
2500  }
2501 
2502  version = max_track_len < UINT32_MAX ? 0 : 1;
2503  (version == 1) ? avio_wb32(pb, 120) : avio_wb32(pb, 108); /* size */
2504  ffio_wfourcc(pb, "mvhd");
2505  avio_w8(pb, version);
2506  avio_wb24(pb, 0); /* flags */
2507  if (version == 1) {
2508  avio_wb64(pb, mov->time);
2509  avio_wb64(pb, mov->time);
2510  } else {
2511  avio_wb32(pb, mov->time); /* creation time */
2512  avio_wb32(pb, mov->time); /* modification time */
2513  }
2514  avio_wb32(pb, MOV_TIMESCALE);
2515  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
2516 
2517  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
2518  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
2519  avio_wb16(pb, 0); /* reserved */
2520  avio_wb32(pb, 0); /* reserved */
2521  avio_wb32(pb, 0); /* reserved */
2522 
2523  /* Matrix structure */
2524  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2525 
2526  avio_wb32(pb, 0); /* reserved (preview time) */
2527  avio_wb32(pb, 0); /* reserved (preview duration) */
2528  avio_wb32(pb, 0); /* reserved (poster time) */
2529  avio_wb32(pb, 0); /* reserved (selection time) */
2530  avio_wb32(pb, 0); /* reserved (selection duration) */
2531  avio_wb32(pb, 0); /* reserved (current time) */
2532  avio_wb32(pb, max_track_id + 1); /* Next track id */
2533  return 0x6c;
2534 }
2535 
2537  AVFormatContext *s)
2538 {
2539  avio_wb32(pb, 33); /* size */
2540  ffio_wfourcc(pb, "hdlr");
2541  avio_wb32(pb, 0);
2542  avio_wb32(pb, 0);
2543  ffio_wfourcc(pb, "mdir");
2544  ffio_wfourcc(pb, "appl");
2545  avio_wb32(pb, 0);
2546  avio_wb32(pb, 0);
2547  avio_w8(pb, 0);
2548  return 33;
2549 }
2550 
2551 /* helper function to write a data tag with the specified string as data */
2552 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
2553 {
2554  if (long_style) {
2555  int size = 16 + strlen(data);
2556  avio_wb32(pb, size); /* size */
2557  ffio_wfourcc(pb, "data");
2558  avio_wb32(pb, 1);
2559  avio_wb32(pb, 0);
2560  avio_write(pb, data, strlen(data));
2561  return size;
2562  } else {
2563  if (!lang)
2564  lang = ff_mov_iso639_to_lang("und", 1);
2565  avio_wb16(pb, strlen(data)); /* string length */
2566  avio_wb16(pb, lang);
2567  avio_write(pb, data, strlen(data));
2568  return strlen(data) + 4;
2569  }
2570 }
2571 
2572 static int mov_write_string_tag(AVIOContext *pb, const char *name,
2573  const char *value, int lang, int long_style)
2574 {
2575  int size = 0;
2576  if (value && value[0]) {
2577  int64_t pos = avio_tell(pb);
2578  avio_wb32(pb, 0); /* size */
2579  ffio_wfourcc(pb, name);
2580  mov_write_string_data_tag(pb, value, lang, long_style);
2581  size = update_size(pb, pos);
2582  }
2583  return size;
2584 }
2585 
2587  const char *name, const char *tag,
2588  int long_style)
2589 {
2590  int l, lang = 0, len, len2;
2591  AVDictionaryEntry *t, *t2 = NULL;
2592  char tag2[16];
2593 
2594  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2595  return 0;
2596 
2597  len = strlen(t->key);
2598  snprintf(tag2, sizeof(tag2), "%s-", tag);
2599  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
2600  len2 = strlen(t2->key);
2601  if (len2 == len + 4 && !strcmp(t->value, t2->value)
2602  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
2603  lang = l;
2604  break;
2605  }
2606  }
2607  return mov_write_string_tag(pb, name, t->value, lang, long_style);
2608 }
2609 
2610 /* iTunes bpm number */
2612 {
2613  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
2614  int size = 0, tmpo = t ? atoi(t->value) : 0;
2615  if (tmpo) {
2616  size = 26;
2617  avio_wb32(pb, size);
2618  ffio_wfourcc(pb, "tmpo");
2619  avio_wb32(pb, size-8); /* size */
2620  ffio_wfourcc(pb, "data");
2621  avio_wb32(pb, 0x15); //type specifier
2622  avio_wb32(pb, 0);
2623  avio_wb16(pb, tmpo); // data
2624  }
2625  return size;
2626 }
2627 
2628 /* iTunes track or disc number */
2630  AVFormatContext *s, int disc)
2631 {
2633  disc ? "disc" : "track",
2634  NULL, 0);
2635  int size = 0, track = t ? atoi(t->value) : 0;
2636  if (track) {
2637  int tracks = 0;
2638  char *slash = strchr(t->value, '/');
2639  if (slash)
2640  tracks = atoi(slash + 1);
2641  avio_wb32(pb, 32); /* size */
2642  ffio_wfourcc(pb, disc ? "disk" : "trkn");
2643  avio_wb32(pb, 24); /* size */
2644  ffio_wfourcc(pb, "data");
2645  avio_wb32(pb, 0); // 8 bytes empty
2646  avio_wb32(pb, 0);
2647  avio_wb16(pb, 0); // empty
2648  avio_wb16(pb, track); // track / disc number
2649  avio_wb16(pb, tracks); // total track / disc number
2650  avio_wb16(pb, 0); // empty
2651  size = 32;
2652  }
2653  return size;
2654 }
2655 
2657  const char *name, const char *tag,
2658  int len)
2659 {
2660  AVDictionaryEntry *t = NULL;
2661  uint8_t num;
2662  int size = 24 + len;
2663 
2664  if (len != 1 && len != 4)
2665  return -1;
2666 
2667  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
2668  return 0;
2669  num = atoi(t->value);
2670 
2671  avio_wb32(pb, size);
2672  ffio_wfourcc(pb, name);
2673  avio_wb32(pb, size - 8);
2674  ffio_wfourcc(pb, "data");
2675  avio_wb32(pb, 0x15);
2676  avio_wb32(pb, 0);
2677  if (len==4) avio_wb32(pb, num);
2678  else avio_w8 (pb, num);
2679 
2680  return size;
2681 }
2682 
2683 /* iTunes meta data list */
2685  AVFormatContext *s)
2686 {
2687  int64_t pos = avio_tell(pb);
2688  avio_wb32(pb, 0); /* size */
2689  ffio_wfourcc(pb, "ilst");
2690  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
2691  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
2692  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
2693  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
2694  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
2695  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
2696  if (!mov->exact &&
2697  !mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1))
2698  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
2699  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
2700  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
2701  mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
2702  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
2703  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
2704  mov_write_string_metadata(s, pb, "desc", "description",1);
2705  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
2706  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
2707  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
2708  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
2709  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
2710  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
2711  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
2712  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
2713  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
2714  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
2715  mov_write_trkn_tag(pb, mov, s, 0); // track number
2716  mov_write_trkn_tag(pb, mov, s, 1); // disc number
2717  mov_write_tmpo_tag(pb, s);
2718  return update_size(pb, pos);
2719 }
2720 
2721 /* iTunes meta data tag */
2723  AVFormatContext *s)
2724 {
2725  int size = 0;
2726  int64_t pos = avio_tell(pb);
2727  avio_wb32(pb, 0); /* size */
2728  ffio_wfourcc(pb, "meta");
2729  avio_wb32(pb, 0);
2730  mov_write_itunes_hdlr_tag(pb, mov, s);
2731  mov_write_ilst_tag(pb, mov, s);
2732  size = update_size(pb, pos);
2733  return size;
2734 }
2735 
2737  const char *name, const char *key)
2738 {
2739  int len;
2740  AVDictionaryEntry *t;
2741 
2742  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
2743  return 0;
2744 
2745  len = strlen(t->value);
2746  if (len > 0) {
2747  int size = len + 8;
2748  avio_wb32(pb, size);
2749  ffio_wfourcc(pb, name);
2750  avio_write(pb, t->value, len);
2751  return size;
2752  }
2753  return 0;
2754 }
2755 
2756 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
2757 {
2758  int val;
2759  while (*b) {
2760  GET_UTF8(val, *b++, return -1;)
2761  avio_wb16(pb, val);
2762  }
2763  avio_wb16(pb, 0x00);
2764  return 0;
2765 }
2766 
2767 static uint16_t language_code(const char *str)
2768 {
2769  return (((str[0] - 0x60) & 0x1F) << 10) +
2770  (((str[1] - 0x60) & 0x1F) << 5) +
2771  (( str[2] - 0x60) & 0x1F);
2772 }
2773 
2775  const char *tag, const char *str)
2776 {
2777  int64_t pos = avio_tell(pb);
2778  AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
2779  if (!t || !utf8len(t->value))
2780  return 0;
2781  avio_wb32(pb, 0); /* size */
2782  ffio_wfourcc(pb, tag); /* type */
2783  avio_wb32(pb, 0); /* version + flags */
2784  if (!strcmp(tag, "yrrc"))
2785  avio_wb16(pb, atoi(t->value));
2786  else {
2787  avio_wb16(pb, language_code("eng")); /* language */
2788  avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
2789  if (!strcmp(tag, "albm") &&
2790  (t = av_dict_get(s->metadata, "track", NULL, 0)))
2791  avio_w8(pb, atoi(t->value));
2792  }
2793  return update_size(pb, pos);
2794 }
2795 
2797 {
2798  int64_t pos = avio_tell(pb);
2799  int i, nb_chapters = FFMIN(s->nb_chapters, 255);
2800 
2801  avio_wb32(pb, 0); // size
2802  ffio_wfourcc(pb, "chpl");
2803  avio_wb32(pb, 0x01000000); // version + flags
2804  avio_wb32(pb, 0); // unknown
2805  avio_w8(pb, nb_chapters);
2806 
2807  for (i = 0; i < nb_chapters; i++) {
2808  AVChapter *c = s->chapters[i];
2809  AVDictionaryEntry *t;
2810  avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
2811 
2812  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
2813  int len = FFMIN(strlen(t->value), 255);
2814  avio_w8(pb, len);
2815  avio_write(pb, t->value, len);
2816  } else
2817  avio_w8(pb, 0);
2818  }
2819  return update_size(pb, pos);
2820 }
2821 
2823  AVFormatContext *s)
2824 {
2825  AVIOContext *pb_buf;
2826  int ret, size;
2827  uint8_t *buf;
2828 
2829  ret = avio_open_dyn_buf(&pb_buf);
2830  if (ret < 0)
2831  return ret;
2832 
2833  if (mov->mode & MODE_3GP) {
2834  mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
2835  mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
2836  mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
2837  mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
2838  mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
2839  mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
2840  mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
2841  mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
2842  } else if (mov->mode == MODE_MOV) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
2843  mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
2844  mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
2845  mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
2846  mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
2847  mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
2848  mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
2849  // currently ignored by mov.c
2850  mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
2851  // add support for libquicktime, this atom is also actually read by mov.c
2852  mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
2853  mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
2854  mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
2855  mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
2856  } else {
2857  /* iTunes meta data */
2858  mov_write_meta_tag(pb_buf, mov, s);
2859  }
2860 
2861  if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
2862  mov_write_chpl_tag(pb_buf, s);
2863 
2864  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
2865  avio_wb32(pb, size + 8);
2866  ffio_wfourcc(pb, "udta");
2867  avio_write(pb, buf, size);
2868  }
2869  av_free(buf);
2870 
2871  return 0;
2872 }
2873 
2875  const char *str, const char *lang, int type)
2876 {
2877  int len = utf8len(str) + 1;
2878  if (len <= 0)
2879  return;
2880  avio_wb16(pb, len * 2 + 10); /* size */
2881  avio_wb32(pb, type); /* type */
2882  avio_wb16(pb, language_code(lang)); /* language */
2883  avio_wb16(pb, 0x01); /* ? */
2884  ascii_to_wc(pb, str);
2885 }
2886 
2888 {
2889  MOVMuxContext *mov = s->priv_data;
2890  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
2891  int64_t pos, pos2;
2892 
2893  if (title) {
2894  pos = avio_tell(pb);
2895  avio_wb32(pb, 0); /* size placeholder*/
2896  ffio_wfourcc(pb, "uuid");
2897  ffio_wfourcc(pb, "USMT");
2898  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
2899  avio_wb32(pb, 0xbb88695c);
2900  avio_wb32(pb, 0xfac9c740);
2901 
2902  pos2 = avio_tell(pb);
2903  avio_wb32(pb, 0); /* size placeholder*/
2904  ffio_wfourcc(pb, "MTDT");
2905  avio_wb16(pb, 4);
2906 
2907  // ?
2908  avio_wb16(pb, 0x0C); /* size */
2909  avio_wb32(pb, 0x0B); /* type */
2910  avio_wb16(pb, language_code("und")); /* language */
2911  avio_wb16(pb, 0x0); /* ? */
2912  avio_wb16(pb, 0x021C); /* data */
2913 
2914  if (!mov->exact)
2915  mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
2916  mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
2917  mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
2918 
2919  update_size(pb, pos2);
2920  return update_size(pb, pos);
2921  }
2922 
2923  return 0;
2924 }
2925 
2926 static void build_chunks(MOVTrack *trk)
2927 {
2928  int i;
2929  MOVIentry *chunk = &trk->cluster[0];
2930  uint64_t chunkSize = chunk->size;
2931  chunk->chunkNum = 1;
2932  if (trk->chunkCount)
2933  return;
2934  trk->chunkCount = 1;
2935  for (i = 1; i<trk->entry; i++){
2936  if (chunk->pos + chunkSize == trk->cluster[i].pos &&
2937  chunkSize + trk->cluster[i].size < (1<<20)){
2938  chunkSize += trk->cluster[i].size;
2939  chunk->samples_in_chunk += trk->cluster[i].entries;
2940  } else {
2941  trk->cluster[i].chunkNum = chunk->chunkNum+1;
2942  chunk=&trk->cluster[i];
2943  chunkSize = chunk->size;
2944  trk->chunkCount++;
2945  }
2946  }
2947 }
2948 
2950  AVFormatContext *s)
2951 {
2952  int i;
2953  int64_t pos = avio_tell(pb);
2954  avio_wb32(pb, 0); /* size placeholder*/
2955  ffio_wfourcc(pb, "moov");
2956 
2957  for (i = 0; i < mov->nb_streams; i++) {
2958  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
2959  continue;
2960 
2961  mov->tracks[i].time = mov->time;
2962  mov->tracks[i].track_id = i + 1;
2963 
2964  if (mov->tracks[i].entry)
2965  build_chunks(&mov->tracks[i]);
2966  }
2967 
2968  if (mov->chapter_track)
2969  for (i = 0; i < s->nb_streams; i++) {
2970  mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
2971  mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
2972  }
2973  for (i = 0; i < mov->nb_streams; i++) {
2974  if (mov->tracks[i].tag == MKTAG('r','t','p',' ')) {
2975  mov->tracks[i].tref_tag = MKTAG('h','i','n','t');
2976  mov->tracks[i].tref_id =
2977  mov->tracks[mov->tracks[i].src_track].track_id;
2978  }
2979  }
2980  for (i = 0; i < mov->nb_streams; i++) {
2981  if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
2982  int src_trk = mov->tracks[i].src_track;
2983  mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
2984  mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
2985  //src_trk may have a different timescale than the tmcd track
2986  mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
2987  mov->tracks[i].timescale,
2988  mov->tracks[src_trk].timescale);
2989  }
2990  }
2991 
2992  mov_write_mvhd_tag(pb, mov);
2993  if (mov->mode != MODE_MOV && !mov->iods_skip)
2994  mov_write_iods_tag(pb, mov);
2995  for (i = 0; i < mov->nb_streams; i++) {
2996  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
2997  mov_write_trak_tag(pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
2998  }
2999  }
3000  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
3001  mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
3002 
3003  if (mov->mode == MODE_PSP)
3004  mov_write_uuidusmt_tag(pb, s);
3005  else
3006  mov_write_udta_tag(pb, mov, s);
3007 
3008  return update_size(pb, pos);
3009 }
3010 
3011 static void param_write_int(AVIOContext *pb, const char *name, int value)
3012 {
3013  avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
3014 }
3015 
3016 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
3017 {
3018  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
3019 }
3020 
3021 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
3022 {
3023  char buf[150];
3024  len = FFMIN(sizeof(buf) / 2 - 1, len);
3025  ff_data_to_hex(buf, value, len, 0);
3026  buf[2 * len] = '\0';
3027  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
3028 }
3029 
3031 {
3032  int64_t pos = avio_tell(pb);
3033  int i;
3034  static const uint8_t uuid[] = {
3035  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3036  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3037  };
3038 
3039  avio_wb32(pb, 0);
3040  ffio_wfourcc(pb, "uuid");
3041  avio_write(pb, uuid, sizeof(uuid));
3042  avio_wb32(pb, 0);
3043 
3044  avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
3045  avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
3046  avio_printf(pb, "<head>\n");
3047  if (!mov->exact)
3048  avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
3050  avio_printf(pb, "</head>\n");
3051  avio_printf(pb, "<body>\n");
3052  avio_printf(pb, "<switch>\n");
3053  for (i = 0; i < mov->nb_streams; i++) {
3054  MOVTrack *track = &mov->tracks[i];
3055  const char *type;
3056  /* track->track_id is initialized in write_moov, and thus isn't known
3057  * here yet */
3058  int track_id = i + 1;
3059 
3060  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3061  type = "video";
3062  } else if (track->enc->codec_type == AVMEDIA_TYPE_AUDIO) {
3063  type = "audio";
3064  } else {
3065  continue;
3066  }
3067  avio_printf(pb, "<%s systemBitrate=\"%d\">\n", type,
3068  track->enc->bit_rate);
3069  param_write_int(pb, "systemBitrate", track->enc->bit_rate);
3070  param_write_int(pb, "trackID", track_id);
3071  if (track->enc->codec_type == AVMEDIA_TYPE_VIDEO) {
3072  if (track->enc->codec_id == AV_CODEC_ID_H264) {
3073  uint8_t *ptr;
3074  int size = track->enc->extradata_size;
3075  if (!ff_avc_write_annexb_extradata(track->enc->extradata, &ptr,
3076  &size)) {
3077  param_write_hex(pb, "CodecPrivateData",
3078  ptr ? ptr : track->enc->extradata,
3079  size);
3080  av_free(ptr);
3081  }
3082  param_write_string(pb, "FourCC", "H264");
3083  } else if (track->enc->codec_id == AV_CODEC_ID_VC1) {
3084  param_write_string(pb, "FourCC", "WVC1");
3085  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3086  track->enc->extradata_size);
3087  }
3088  param_write_int(pb, "MaxWidth", track->enc->width);
3089  param_write_int(pb, "MaxHeight", track->enc->height);
3090  param_write_int(pb, "DisplayWidth", track->enc->width);
3091  param_write_int(pb, "DisplayHeight", track->enc->height);
3092  } else {
3093  if (track->enc->codec_id == AV_CODEC_ID_AAC) {
3094  param_write_string(pb, "FourCC", "AACL");
3095  } else if (track->enc->codec_id == AV_CODEC_ID_WMAPRO) {
3096  param_write_string(pb, "FourCC", "WMAP");
3097  }
3098  param_write_hex(pb, "CodecPrivateData", track->enc->extradata,
3099  track->enc->extradata_size);
3101  track->enc->codec_id));
3102  param_write_int(pb, "Channels", track->enc->channels);
3103  param_write_int(pb, "SamplingRate", track->enc->sample_rate);
3104  param_write_int(pb, "BitsPerSample", 16);
3105  param_write_int(pb, "PacketSize", track->enc->block_align ?
3106  track->enc->block_align : 4);
3107  }
3108  avio_printf(pb, "</%s>\n", type);
3109  }
3110  avio_printf(pb, "</switch>\n");
3111  avio_printf(pb, "</body>\n");
3112  avio_printf(pb, "</smil>\n");
3113 
3114  return update_size(pb, pos);
3115 }
3116 
3118 {
3119  avio_wb32(pb, 16);
3120  ffio_wfourcc(pb, "mfhd");
3121  avio_wb32(pb, 0);
3122  avio_wb32(pb, mov->fragments);
3123  return 0;
3124 }
3125 
3127  MOVTrack *track, int64_t moof_offset)
3128 {
3129  int64_t pos = avio_tell(pb);
3132  if (!track->entry) {
3133  flags |= MOV_TFHD_DURATION_IS_EMPTY;
3134  } else {
3135  flags |= MOV_TFHD_DEFAULT_FLAGS;
3136  }
3138  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
3139  if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
3140  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
3142  }
3143 
3144  /* Don't set a default sample size, the silverlight player refuses
3145  * to play files with that set. Don't set a default sample duration,
3146  * WMP freaks out if it is set. Don't set a base data offset, PIFF
3147  * file format says it MUST NOT be set. */
3148  if (track->mode == MODE_ISM)
3151 
3152  avio_wb32(pb, 0); /* size placeholder */
3153  ffio_wfourcc(pb, "tfhd");
3154  avio_w8(pb, 0); /* version */
3155  avio_wb24(pb, flags);
3156 
3157  avio_wb32(pb, track->track_id); /* track-id */
3158  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
3159  avio_wb64(pb, moof_offset);
3160  if (flags & MOV_TFHD_DEFAULT_DURATION) {
3161  track->default_duration = get_cluster_duration(track, 0);
3162  avio_wb32(pb, track->default_duration);
3163  }
3164  if (flags & MOV_TFHD_DEFAULT_SIZE) {
3165  track->default_size = track->entry ? track->cluster[0].size : 1;
3166  avio_wb32(pb, track->default_size);
3167  } else
3168  track->default_size = -1;
3169 
3170  if (flags & MOV_TFHD_DEFAULT_FLAGS) {
3171  track->default_sample_flags =
3172  track->enc->codec_type == AVMEDIA_TYPE_VIDEO ?
3175  avio_wb32(pb, track->default_sample_flags);
3176  }
3177 
3178  return update_size(pb, pos);
3179 }
3180 
3181 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
3182 {
3185 }
3186 
3188  MOVTrack *track, int moof_size)
3189 {
3190  int64_t pos = avio_tell(pb);
3191  uint32_t flags = MOV_TRUN_DATA_OFFSET;
3192  int i;
3193 
3194  for (i = 0; i < track->entry; i++) {
3195  if (get_cluster_duration(track, i) != track->default_duration)
3196  flags |= MOV_TRUN_SAMPLE_DURATION;
3197  if (track->cluster[i].size != track->default_size)
3198  flags |= MOV_TRUN_SAMPLE_SIZE;
3199  if (i > 0 && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
3200  flags |= MOV_TRUN_SAMPLE_FLAGS;
3201  }
3202  if (!(flags & MOV_TRUN_SAMPLE_FLAGS))
3203  flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
3204  if (track->flags & MOV_TRACK_CTTS)
3205  flags |= MOV_TRUN_SAMPLE_CTS;
3206 
3207  avio_wb32(pb, 0); /* size placeholder */
3208  ffio_wfourcc(pb, "trun");
3209  avio_w8(pb, 0); /* version */
3210  avio_wb24(pb, flags);
3211 
3212  avio_wb32(pb, track->entry); /* sample count */
3213  if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
3215  !mov->first_trun)
3216  avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
3217  else
3218  avio_wb32(pb, moof_size + 8 + track->data_offset +
3219  track->cluster[0].pos); /* data offset */
3220  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
3221  avio_wb32(pb, get_sample_flags(track, &track->cluster[0]));
3222 
3223  for (i = 0; i < track->entry; i++) {
3224  if (flags & MOV_TRUN_SAMPLE_DURATION)
3225  avio_wb32(pb, get_cluster_duration(track, i));
3226  if (flags & MOV_TRUN_SAMPLE_SIZE)
3227  avio_wb32(pb, track->cluster[i].size);
3228  if (flags & MOV_TRUN_SAMPLE_FLAGS)
3229  avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
3230  if (flags & MOV_TRUN_SAMPLE_CTS)
3231  avio_wb32(pb, track->cluster[i].cts);
3232  }
3233 
3234  mov->first_trun = 0;
3235  return update_size(pb, pos);
3236 }
3237 
3238 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
3239 {
3240  int64_t pos = avio_tell(pb);
3241  static const uint8_t uuid[] = {
3242  0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
3243  0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
3244  };
3245 
3246  avio_wb32(pb, 0); /* size placeholder */
3247  ffio_wfourcc(pb, "uuid");
3248  avio_write(pb, uuid, sizeof(uuid));
3249  avio_w8(pb, 1);
3250  avio_wb24(pb, 0);
3251  avio_wb64(pb, track->frag_start);
3252  avio_wb64(pb, track->start_dts + track->track_duration -
3253  track->cluster[0].dts);
3254 
3255  return update_size(pb, pos);
3256 }
3257 
3259  MOVTrack *track, int entry)
3260 {
3261  int n = track->nb_frag_info - 1 - entry, i;
3262  int size = 8 + 16 + 4 + 1 + 16*n;
3263  static const uint8_t uuid[] = {
3264  0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
3265  0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
3266  };
3267 
3268  if (entry < 0)
3269  return 0;
3270 
3271  avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
3272  avio_wb32(pb, size);
3273  ffio_wfourcc(pb, "uuid");
3274  avio_write(pb, uuid, sizeof(uuid));
3275  avio_w8(pb, 1);
3276  avio_wb24(pb, 0);
3277  avio_w8(pb, n);
3278  for (i = 0; i < n; i++) {
3279  int index = entry + 1 + i;
3280  avio_wb64(pb, track->frag_info[index].time);
3281  avio_wb64(pb, track->frag_info[index].duration);
3282  }
3283  if (n < mov->ism_lookahead) {
3284  int free_size = 16 * (mov->ism_lookahead - n);
3285  avio_wb32(pb, free_size);
3286  ffio_wfourcc(pb, "free");
3287  ffio_fill(pb, 0, free_size - 8);
3288  }
3289 
3290  return 0;
3291 }
3292 
3294  MOVTrack *track)
3295 {
3296  int64_t pos = avio_tell(pb);
3297  int i;
3298  for (i = 0; i < mov->ism_lookahead; i++) {
3299  /* Update the tfrf tag for the last ism_lookahead fragments,
3300  * nb_frag_info - 1 is the next fragment to be written. */
3301  mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
3302  }
3303  avio_seek(pb, pos, SEEK_SET);
3304  return 0;
3305 }
3306 
3307 static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
3308  int size)
3309 {
3310  int i;
3311  for (i = 0; i < mov->nb_streams; i++) {
3312  MOVTrack *track = &mov->tracks[i];
3313  MOVFragmentInfo *info;
3314  if ((tracks >= 0 && i != tracks) || !track->entry)
3315  continue;
3316  track->nb_frag_info++;
3317  if (track->nb_frag_info >= track->frag_info_capacity) {
3318  unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
3319  if (av_reallocp_array(&track->frag_info,
3320  new_capacity,
3321  sizeof(*track->frag_info)))
3322  return AVERROR(ENOMEM);
3323  track->frag_info_capacity = new_capacity;
3324  }
3325  info = &track->frag_info[track->nb_frag_info - 1];
3326  info->offset = avio_tell(pb);
3327  info->size = size;
3328  // Try to recreate the original pts for the first packet
3329  // from the fields we have stored
3330  info->time = track->start_dts + track->frag_start +
3331  track->cluster[0].cts;
3332  // If the pts is less than zero, we will have trimmed
3333  // away parts of the media track using an edit list,
3334  // and the corresponding start presentation time is zero.
3335  if (info->time < 0)
3336  info->time = 0;
3337  info->duration = track->start_dts + track->track_duration -
3338  track->cluster[0].dts;
3339  info->tfrf_offset = 0;
3340  mov_write_tfrf_tags(pb, mov, track);
3341  }
3342  return 0;
3343 }
3344 
3345 static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
3346 {
3347  int64_t pos = avio_tell(pb);
3348 
3349  avio_wb32(pb, 0); /* size */
3350  ffio_wfourcc(pb, "tfdt");
3351  avio_w8(pb, 1); /* version */
3352  avio_wb24(pb, 0);
3353  avio_wb64(pb, track->frag_start);
3354  return update_size(pb, pos);
3355 }
3356 
3358  MOVTrack *track, int64_t moof_offset,
3359  int moof_size)
3360 {
3361  int64_t pos = avio_tell(pb);
3362  avio_wb32(pb, 0); /* size placeholder */
3363  ffio_wfourcc(pb, "traf");
3364 
3365  mov_write_tfhd_tag(pb, mov, track, moof_offset);
3366  if (mov->mode != MODE_ISM)
3367  mov_write_tfdt_tag(pb, track);
3368  mov_write_trun_tag(pb, mov, track, moof_size);
3369  if (mov->mode == MODE_ISM) {
3370  mov_write_tfxd_tag(pb, track);
3371 
3372  if (mov->ism_lookahead) {
3373  int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
3374 
3375  if (track->nb_frag_info > 0) {
3376  MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
3377  if (!info->tfrf_offset)
3378  info->tfrf_offset = avio_tell(pb);
3379  }
3380  avio_wb32(pb, 8 + size);
3381  ffio_wfourcc(pb, "free");
3382  for (i = 0; i < size; i++)
3383  avio_w8(pb, 0);
3384  }
3385  }
3386 
3387  return update_size(pb, pos);
3388 }
3389 
3391  int tracks, int moof_size)
3392 {
3393  int64_t pos = avio_tell(pb);
3394  int i;
3395 
3396  avio_wb32(pb, 0); /* size placeholder */
3397  ffio_wfourcc(pb, "moof");
3398  mov->first_trun = 1;
3399 
3400  mov_write_mfhd_tag(pb, mov);
3401  for (i = 0; i < mov->nb_streams; i++) {
3402  MOVTrack *track = &mov->tracks[i];
3403  if (tracks >= 0 && i != tracks)
3404  continue;
3405  if (!track->entry)
3406  continue;
3407  mov_write_traf_tag(pb, mov, track, pos, moof_size);
3408  }
3409 
3410  return update_size(pb, pos);
3411 }
3412 
3414  MOVTrack *track, int ref_size, int total_sidx_size)
3415 {
3416  int64_t pos = avio_tell(pb), offset_pos, end_pos;
3417  int64_t presentation_time, duration, offset;
3418  int starts_with_SAP, i, entries;
3419 
3420  if (track->entry) {
3421  entries = 1;
3422  presentation_time = track->start_dts + track->frag_start +
3423  track->cluster[0].cts;
3424  duration = track->start_dts + track->track_duration -
3425  track->cluster[0].dts;
3426  starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
3427  } else {
3428  entries = track->nb_frag_info;
3429  presentation_time = track->frag_info[0].time;
3430  }
3431 
3432  // pts<0 should be cut away using edts
3433  if (presentation_time < 0)
3434  presentation_time = 0;
3435 
3436  avio_wb32(pb, 0); /* size */
3437  ffio_wfourcc(pb, "sidx");
3438  avio_w8(pb, 1); /* version */
3439  avio_wb24(pb, 0);
3440  avio_wb32(pb, track->track_id); /* reference_ID */
3441  avio_wb32(pb, track->timescale); /* timescale */
3442  avio_wb64(pb, presentation_time); /* earliest_presentation_time */
3443  offset_pos = avio_tell(pb);
3444  avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
3445  avio_wb16(pb, 0); /* reserved */
3446 
3447  avio_wb16(pb, entries); /* reference_count */
3448  for (i = 0; i < entries; i++) {
3449  if (!track->entry) {
3450  if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
3451  av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
3452  }
3453  duration = track->frag_info[i].duration;
3454  ref_size = track->frag_info[i].size;
3455  starts_with_SAP = 1;
3456  }
3457  avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
3458  avio_wb32(pb, duration); /* subsegment_duration */
3459  avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
3460  }
3461 
3462  end_pos = avio_tell(pb);
3463  offset = pos + total_sidx_size - end_pos;
3464  avio_seek(pb, offset_pos, SEEK_SET);
3465  avio_wb64(pb, offset);
3466  avio_seek(pb, end_pos, SEEK_SET);
3467  return update_size(pb, pos);
3468 }
3469 
3471  int tracks, int ref_size)
3472 {
3473  int i, round, ret;
3474  AVIOContext *avio_buf;
3475  int total_size = 0;
3476  for (round = 0; round < 2; round++) {
3477  // First run one round to calculate the total size of all
3478  // sidx atoms.
3479  // This would be much simpler if we'd only write one sidx
3480  // atom, for the first track in the moof.
3481  if (round == 0) {
3482  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
3483  return ret;
3484  } else {
3485  avio_buf = pb;
3486  }
3487  for (i = 0; i < mov->nb_streams; i++) {
3488  MOVTrack *track = &mov->tracks[i];
3489  if (tracks >= 0 && i != tracks)
3490  continue;
3491  // When writing a sidx for the full file, entry is 0, but
3492  // we want to include all tracks. ref_size is 0 in this case,
3493  // since we read it from frag_info instead.
3494  if (!track->entry && ref_size > 0)
3495  continue;
3496  total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
3497  total_size);
3498  }
3499  if (round == 0)
3500  total_size = ffio_close_null_buf(avio_buf);
3501  }
3502  return 0;
3503 }
3504 
3505 static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
3506  int64_t mdat_size)
3507 {
3508  AVIOContext *avio_buf;
3509  int ret, moof_size;
3510 
3511  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
3512  return ret;
3513  mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
3514  moof_size = ffio_close_null_buf(avio_buf);
3515 
3516  if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_FASTSTART))
3517  mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);
3518 
3519  if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
3520  return ret;
3521 
3522  return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
3523 }
3524 
3525 static int mov_write_tfra_tag(AVIOContext *pb, MOVTrack *track)
3526 {
3527  int64_t pos = avio_tell(pb);
3528  int i;
3529 
3530  avio_wb32(pb, 0); /* size placeholder */
3531  ffio_wfourcc(pb, "tfra");
3532  avio_w8(pb, 1); /* version */
3533  avio_wb24(pb, 0);
3534 
3535  avio_wb32(pb, track->track_id);
3536  avio_wb32(pb, 0); /* length of traf/trun/sample num */
3537  avio_wb32(pb, track->nb_frag_info);
3538  for (i = 0; i < track->nb_frag_info; i++) {
3539  avio_wb64(pb, track->frag_info[i].time);
3540  avio_wb64(pb, track->frag_info[i].offset + track->data_offset);
3541  avio_w8(pb, 1); /* traf number */
3542  avio_w8(pb, 1); /* trun number */
3543  avio_w8(pb, 1); /* sample number */
3544  }
3545 
3546  return update_size(pb, pos);
3547 }
3548 
3550 {
3551  int64_t pos = avio_tell(pb);
3552  int i;
3553 
3554  avio_wb32(pb, 0); /* size placeholder */
3555  ffio_wfourcc(pb, "mfra");
3556  /* An empty mfra atom is enough to indicate to the publishing point that
3557  * the stream has ended. */
3558  if (mov->flags & FF_MOV_FLAG_ISML)
3559  return update_size(pb, pos);
3560 
3561  for (i = 0; i < mov->nb_streams; i++) {
3562  MOVTrack *track = &mov->tracks[i];
3563  if (track->nb_frag_info)
3564  mov_write_tfra_tag(pb, track);
3565  }
3566 
3567  avio_wb32(pb, 16);
3568  ffio_wfourcc(pb, "mfro");
3569  avio_wb32(pb, 0); /* version + flags */
3570  avio_wb32(pb, avio_tell(pb) + 4 - pos);
3571 
3572  return update_size(pb, pos);
3573 }
3574 
3576 {
3577  avio_wb32(pb, 8); // placeholder for extended size field (64 bit)
3578  ffio_wfourcc(pb, mov->mode == MODE_MOV ? "wide" : "free");
3579 
3580  mov->mdat_pos = avio_tell(pb);
3581  avio_wb32(pb, 0); /* size placeholder*/
3582  ffio_wfourcc(pb, "mdat");
3583  return 0;
3584 }
3585 
3586 /* TODO: This needs to be more general */
3588 {
3589  MOVMuxContext *mov = s->priv_data;
3590  int64_t pos = avio_tell(pb);
3591  int has_h264 = 0, has_video = 0;
3592  int minor = 0x200;
3593  int i;
3594 
3595  for (i = 0; i < s->nb_streams; i++) {
3596  AVStream *st = s->streams[i];
3597  if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3598  has_video = 1;
3599  if (st->codec->codec_id == AV_CODEC_ID_H264)
3600  has_h264 = 1;
3601  }
3602 
3603  avio_wb32(pb, 0); /* size */
3604  ffio_wfourcc(pb, "ftyp");
3605 
3606  if (mov->major_brand && strlen(mov->major_brand) >= 4)
3607  ffio_wfourcc(pb, mov->major_brand);
3608  else if (mov->mode == MODE_3GP) {
3609  ffio_wfourcc(pb, has_h264 ? "3gp6" : "3gp4");
3610  minor = has_h264 ? 0x100 : 0x200;
3611  } else if (mov->mode & MODE_3G2) {
3612  ffio_wfourcc(pb, has_h264 ? "3g2b" : "3g2a");
3613  minor = has_h264 ? 0x20000 : 0x10000;
3614  } else if (mov->mode == MODE_PSP)
3615  ffio_wfourcc(pb, "MSNV");
3616  else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
3617  ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof
3618  else if (mov->mode == MODE_MP4)
3619  ffio_wfourcc(pb, "isom");
3620  else if (mov->mode == MODE_IPOD)
3621  ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
3622  else if (mov->mode == MODE_ISM)
3623  ffio_wfourcc(pb, "isml");
3624  else if (mov->mode == MODE_F4V)
3625  ffio_wfourcc(pb, "f4v ");
3626  else
3627  ffio_wfourcc(pb, "qt ");
3628 
3629  avio_wb32(pb, minor);
3630 
3631  if (mov->mode == MODE_MOV)
3632  ffio_wfourcc(pb, "qt ");
3633  else if (mov->mode == MODE_ISM) {
3634  ffio_wfourcc(pb, "piff");
3635  } else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
3636  ffio_wfourcc(pb, "isom");
3637  ffio_wfourcc(pb, "iso2");
3638  if (has_h264)
3639  ffio_wfourcc(pb, "avc1");
3640  }
3641 
3642  // We add tfdt atoms when fragmenting, signal this with the iso6 compatible
3643  // brand. This is compatible with users that don't understand tfdt.
3644  if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
3645  ffio_wfourcc(pb, "iso6");
3646 
3647  if (mov->mode == MODE_3GP)
3648  ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
3649  else if (mov->mode & MODE_3G2)
3650  ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
3651  else if (mov->mode == MODE_PSP)
3652  ffio_wfourcc(pb, "MSNV");
3653  else if (mov->mode == MODE_MP4)
3654  ffio_wfourcc(pb, "mp41");
3655 
3656  if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_FASTSTART)
3657  ffio_wfourcc(pb, "dash");
3658 
3659  return update_size(pb, pos);
3660 }
3661 
3663 {
3664  AVStream *video_st = s->streams[0];
3665  AVCodecContext *video_codec = s->streams[0]->codec;
3666  AVCodecContext *audio_codec = s->streams[1]->codec;
3667  int audio_rate = audio_codec->sample_rate;
3668  // TODO: should be avg_frame_rate
3669  int frame_rate = ((video_st->time_base.den) * (0x10000)) / (video_st->time_base.num);
3670  int audio_kbitrate = audio_codec->bit_rate / 1000;
3671  int video_kbitrate = FFMIN(video_codec->bit_rate / 1000, 800 - audio_kbitrate);
3672 
3673  avio_wb32(pb, 0x94); /* size */
3674  ffio_wfourcc(pb, "uuid");
3675  ffio_wfourcc(pb, "PROF");
3676 
3677  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
3678  avio_wb32(pb, 0xbb88695c);
3679  avio_wb32(pb, 0xfac9c740);
3680 
3681  avio_wb32(pb, 0x0); /* ? */
3682  avio_wb32(pb, 0x3); /* 3 sections ? */
3683 
3684  avio_wb32(pb, 0x14); /* size */
3685  ffio_wfourcc(pb, "FPRF");
3686  avio_wb32(pb, 0x0); /* ? */
3687  avio_wb32(pb, 0x0); /* ? */
3688  avio_wb32(pb, 0x0); /* ? */
3689 
3690  avio_wb32(pb, 0x2c); /* size */
3691  ffio_wfourcc(pb, "APRF"); /* audio */
3692  avio_wb32(pb, 0x0);
3693  avio_wb32(pb, 0x2); /* TrackID */
3694  ffio_wfourcc(pb, "mp4a");
3695  avio_wb32(pb, 0x20f);
3696  avio_wb32(pb, 0x0);
3697  avio_wb32(pb, audio_kbitrate);
3698  avio_wb32(pb, audio_kbitrate);
3699  avio_wb32(pb, audio_rate);
3700  avio_wb32(pb, audio_codec->channels);
3701 
3702  avio_wb32(pb, 0x34); /* size */
3703  ffio_wfourcc(pb, "VPRF"); /* video */
3704  avio_wb32(pb, 0x0);
3705  avio_wb32(pb, 0x1); /* TrackID */
3706  if (video_codec->codec_id == AV_CODEC_ID_H264) {
3707  ffio_wfourcc(pb, "avc1");
3708  avio_wb16(pb, 0x014D);
3709  avio_wb16(pb, 0x0015);
3710  } else {
3711  ffio_wfourcc(pb, "mp4v");
3712  avio_wb16(pb, 0x0000);
3713  avio_wb16(pb, 0x0103);
3714  }
3715  avio_wb32(pb, 0x0);
3716  avio_wb32(pb, video_kbitrate);
3717  avio_wb32(pb, video_kbitrate);
3718  avio_wb32(pb, frame_rate);
3719  avio_wb32(pb, frame_rate);
3720  avio_wb16(pb, video_codec->width);
3721  avio_wb16(pb, video_codec->height);
3722  avio_wb32(pb, 0x010001); /* ? */
3723 }
3724 
3725 static int mov_parse_mpeg2_frame(AVPacket *pkt, uint32_t *flags)
3726 {
3727  uint32_t c = -1;
3728  int i, closed_gop = 0;
3729 
3730  for (i = 0; i < pkt->size - 4; i++) {
3731  c = (c << 8) + pkt->data[i];
3732  if (c == 0x1b8) { // gop
3733  closed_gop = pkt->data[i + 4] >> 6 & 0x01;
3734  } else if (c == 0x100) { // pic
3735  int temp_ref = (pkt->data[i + 1] << 2) | (pkt->data[i + 2] >> 6);
3736  if (!temp_ref || closed_gop) // I picture is not reordered
3737  *flags = MOV_SYNC_SAMPLE;
3738  else
3739  *flags = MOV_PARTIAL_SYNC_SAMPLE;
3740  break;
3741  }
3742  }
3743  return 0;
3744 }
3745 
3746 static void mov_parse_vc1_frame(AVPacket *pkt, MOVTrack *trk, int fragment)
3747 {
3748  const uint8_t *start, *next, *end = pkt->data + pkt->size;
3749  int seq = 0, entry = 0;
3750  int key = pkt->flags & AV_PKT_FLAG_KEY;
3751  start = find_next_marker(pkt->data, end);
3752  for (next = start; next < end; start = next) {
3753  next = find_next_marker(start + 4, end);
3754  switch (AV_RB32(start)) {
3755  case VC1_CODE_SEQHDR:
3756  seq = 1;
3757  break;
3758  case VC1_CODE_ENTRYPOINT:
3759  entry = 1;
3760  break;
3761  case VC1_CODE_SLICE:
3762  trk->vc1_info.slices = 1;
3763  break;
3764  }
3765  }
3766  if (!trk->entry && !fragment) {
3767  /* First packet in first fragment */
3768  trk->vc1_info.first_packet_seq = seq;
3769  trk->vc1_info.first_packet_entry = entry;
3770  } else if ((seq && !trk->vc1_info.packet_seq) ||
3771  (entry && !trk->vc1_info.packet_entry)) {
3772  int i;
3773  for (i = 0; i < trk->entry; i++)
3774  trk->cluster[i].flags &= ~MOV_SYNC_SAMPLE;
3775  trk->has_keyframes = 0;
3776  if (seq)
3777  trk->vc1_info.packet_seq = 1;
3778  if (entry)
3779  trk->vc1_info.packet_entry = 1;
3780  if (!fragment) {
3781  /* First fragment */
3782  if ((!seq || trk->vc1_info.first_packet_seq) &&
3783  (!entry || trk->vc1_info.first_packet_entry)) {
3784  /* First packet had the same headers as this one, readd the
3785  * sync sample flag. */
3786  trk->cluster[0].flags |= MOV_SYNC_SAMPLE;
3787  trk->has_keyframes = 1;
3788  }
3789  }
3790  }
3791  if (trk->vc1_info.packet_seq && trk->vc1_info.packet_entry)
3792  key = seq && entry;
3793  else if (trk->vc1_info.packet_seq)
3794  key = seq;
3795  else if (trk->vc1_info.packet_entry)
3796  key = entry;
3797  if (key) {
3798  trk->cluster[trk->entry].flags |= MOV_SYNC_SAMPLE;
3799  trk->has_keyframes++;
3800  }
3801 }
3802 
3804 {
3805  MOVMuxContext *mov = s->priv_data;
3806  int i, first_track = -1;
3807  int64_t mdat_size = 0;
3808 
3809  if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
3810  return 0;
3811 
3812  if (!(mov->flags & FF_MOV_FLAG_EMPTY_MOOV) && mov->fragments == 0) {
3813  int64_t pos = avio_tell(s->pb);
3814  uint8_t *buf;
3815  int buf_size, moov_size;
3816 
3817  for (i = 0; i < mov->nb_streams; i++)
3818  if (!mov->tracks[i].entry)
3819  break;
3820  /* Don't write the initial moov unless all tracks have data */
3821  if (i < mov->nb_streams)
3822  return 0;
3823 
3824  moov_size = get_moov_size(s);
3825  for (i = 0; i < mov->nb_streams; i++)
3826  mov->tracks[i].data_offset = pos + moov_size + 8;
3827 
3828  mov_write_moov_tag(s->pb, mov, s);
3829 
3830  buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
3831  mov->mdat_buf = NULL;
3832  avio_wb32(s->pb, buf_size + 8);
3833  ffio_wfourcc(s->pb, "mdat");
3834  avio_write(s->pb, buf, buf_size);
3835  av_free(buf);
3836 
3837  mov->fragments++;
3838  mov->mdat_size = 0;
3839  for (i = 0; i < mov->nb_streams; i++) {
3840  if (mov->tracks[i].entry)
3841  mov->tracks[i].frag_start += mov->tracks[i].start_dts +
3842  mov->tracks[i].track_duration -
3843  mov->tracks[i].cluster[0].dts;
3844  mov->tracks[i].entry = 0;
3845  }
3846  avio_flush(s->pb);
3847  return 0;
3848  }
3849 
3850  for (i = 0; i < mov->nb_streams; i++) {
3851  MOVTrack *track = &mov->tracks[i];
3852  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF)
3853  track->data_offset = 0;
3854  else
3855  track->data_offset = mdat_size;
3856  if (!track->mdat_buf)
3857  continue;
3858  mdat_size += avio_tell(track->mdat_buf);
3859  if (first_track < 0)
3860  first_track = i;
3861  }
3862 
3863  if (!mdat_size)
3864  return 0;
3865 
3866  for (i = 0; i < mov->nb_streams; i++) {
3867  MOVTrack *track = &mov->tracks[i];
3868  int buf_size, write_moof = 1, moof_tracks = -1;
3869  uint8_t *buf;
3870  int64_t duration = 0;
3871 
3872  if (track->entry)
3873  duration = track->start_dts + track->track_duration -
3874  track->cluster[0].dts;
3875  if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
3876  if (!track->mdat_buf)
3877  continue;
3878  mdat_size = avio_tell(track->mdat_buf);
3879  moof_tracks = i;
3880  } else {
3881  write_moof = i == first_track;
3882  }
3883 
3884  if (write_moof) {
3885  avio_flush(s->pb);
3886 
3887  mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
3888  mov->fragments++;
3889 
3890  avio_wb32(s->pb, mdat_size + 8);
3891  ffio_wfourcc(s->pb, "mdat");
3892  }
3893 
3894  if (track->entry)
3895  track->frag_start += duration;
3896  track->entry = 0;
3897  if (!track->mdat_buf)
3898  continue;
3899  buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
3900  track->mdat_buf = NULL;
3901 
3902  avio_write(s->pb, buf, buf_size);
3903  av_free(buf);
3904  }
3905 
3906  mov->mdat_size = 0;
3907 
3908  avio_flush(s->pb);
3909  return 0;
3910 }
3911 
3913 {
3914  MOVMuxContext *mov = s->priv_data;
3915  AVIOContext *pb = s->pb;
3916  MOVTrack *trk = &mov->tracks[pkt->stream_index];
3917  AVCodecContext *enc = trk->enc;
3918  unsigned int samples_in_chunk = 0;
3919  int size = pkt->size, ret = 0;
3920  uint8_t *reformatted_data = NULL;
3921 
3922  if (trk->entry) {
3923  int64_t duration = pkt->dts - trk->cluster[trk->entry - 1].dts;
3924  if (duration < 0 || duration > INT_MAX) {
3925  av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",
3926  duration, pkt->dts
3927  );
3928 
3929  pkt->dts = trk->cluster[trk->entry - 1].dts + 1;
3930  pkt->pts = AV_NOPTS_VALUE;
3931  }
3932  if (pkt->duration < 0) {
3933  av_log(s, AV_LOG_ERROR, "Application provided duration: %d is invalid\n", pkt->duration);
3934  return AVERROR(EINVAL);
3935  }
3936  }
3937  if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
3938  int ret;
3939  if (mov->fragments > 0) {
3940  if (!trk->mdat_buf) {
3941  if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
3942  return ret;
3943  }
3944  pb = trk->mdat_buf;
3945  } else {
3946  if (!mov->mdat_buf) {
3947  if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
3948  return ret;
3949  }
3950  pb = mov->mdat_buf;
3951  }
3952  }
3953 
3954  if (enc->codec_id == AV_CODEC_ID_AMR_NB) {
3955  /* We must find out how many AMR blocks there are in one packet */
3956  static uint16_t packed_size[16] =
3957  {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
3958  int len = 0;
3959 
3960  while (len < size && samples_in_chunk < 100) {
3961  len += packed_size[(pkt->data[len] >> 3) & 0x0F];
3962  samples_in_chunk++;
3963  }
3964  if (samples_in_chunk > 1) {
3965  av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
3966  return -1;
3967  }
3968  } else if (enc->codec_id == AV_CODEC_ID_ADPCM_MS ||
3970  samples_in_chunk = enc->frame_size;
3971  } else if (trk->sample_size)
3972  samples_in_chunk = size / trk->sample_size;
3973  else
3974  samples_in_chunk = 1;
3975 
3976  /* copy extradata if it exists */
3977  if (trk->vos_len == 0 && enc->extradata_size > 0 && !TAG_IS_AVCI(trk->tag)) {
3978  trk->vos_len = enc->extradata_size;
3979  trk->vos_data = av_malloc(trk->vos_len);
3980  memcpy(trk->vos_data, enc->extradata, trk->vos_len);
3981  }
3982 
3983  if (enc->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
3984  (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
3985  if (!s->streams[pkt->stream_index]->nb_frames) {
3986  av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
3987  "use the audio bitstream filter 'aac_adtstoasc' to fix it "
3988  "('-bsf:a aac_adtstoasc' option with ffmpeg)\n");
3989  return -1;
3990  }
3991  av_log(s, AV_LOG_WARNING, "aac bitstream error\n");
3992  }
3993  if (enc->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {
3994  /* from x264 or from bytestream h264 */
3995  /* nal reformating needed */
3996  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
3997  ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
3998  &size);
3999  avio_write(pb, reformatted_data, size);
4000  } else {
4001  size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
4002  }
4003  } else if (enc->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
4004  (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
4005  /* extradata is Annex B, assume the bitstream is too and convert it */
4006  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
4007  ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
4008  avio_write(pb, reformatted_data, size);
4009  } else {
4010  size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
4011  }
4012  } else if (CONFIG_AC3_PARSER && enc->codec_id == AV_CODEC_ID_EAC3) {
4013  size = handle_eac3(mov, pkt, trk);
4014  if (size < 0)
4015  return size;
4016  else if (!size)
4017  goto end;
4018  avio_write(pb, pkt->data, size);
4019  } else {
4020  avio_write(pb, pkt->data, size);
4021  }
4022 
4023  if ((enc->codec_id == AV_CODEC_ID_DNXHD ||
4024  enc->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
4025  /* copy frame to create needed atoms */
4026  trk->vos_len = size;
4027  trk->vos_data = av_malloc(size);
4028  if (!trk->vos_data) {
4029  ret = AVERROR(ENOMEM);
4030  goto err;
4031  }
4032  memcpy(trk->vos_data, pkt->data, size);
4033  }
4034 
4035  if (trk->entry >= trk->cluster_capacity) {
4036  unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
4037  if (av_reallocp_array(&trk->cluster, new_capacity,
4038  sizeof(*trk->cluster))) {
4039  ret = AVERROR(ENOMEM);
4040  goto err;
4041  }
4042  trk->cluster_capacity = new_capacity;
4043  }
4044 
4045  trk->cluster[trk->entry].pos = avio_tell(pb) - size;
4046  trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
4047  trk->cluster[trk->entry].chunkNum = 0;
4048  trk->cluster[trk->entry].size = size;
4049  trk->cluster[trk->entry].entries = samples_in_chunk;
4050  trk->cluster[trk->entry].dts = pkt->dts;
4051  if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
4052  if (!trk->frag_discont) {
4053  /* First packet of a new fragment. We already wrote the duration
4054  * of the last packet of the previous fragment based on track_duration,
4055  * which might not exactly match our dts. Therefore adjust the dts
4056  * of this packet to be what the previous packets duration implies. */
4057  trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
4058  } else {
4059  /* New fragment, but discontinuous from previous fragments.
4060  * Pretend the duration sum of the earlier fragments is
4061  * pkt->dts - trk->start_dts. */
4062  trk->frag_start = pkt->dts - trk->start_dts;
4063  trk->frag_discont = 0;
4064  }
4065  }
4066 
4067  if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
4069  /* Not using edit lists and shifting the first track to start from zero.
4070  * If the other streams start from a later timestamp, we won't be able
4071  * to signal the difference in starting time without an edit list.
4072  * Thus move the timestamp for this first sample to 0, increasing
4073  * its duration instead. */
4074  trk->cluster[trk->entry].dts = trk->start_dts = 0;
4075  }
4076  if (trk->start_dts == AV_NOPTS_VALUE) {
4077  trk->start_dts = pkt->dts;
4078  if (trk->frag_discont) {
4079  /* Pretend the whole stream started at dts=0, with earlier framgents
4080  * already written, with a duration summing up to pkt->dts. */
4081  trk->frag_start = pkt->dts;
4082  trk->start_dts = 0;
4083  trk->frag_discont = 0;
4084  } else if (pkt->dts && mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
4086  "Track %d starts with a nonzero dts %"PRId64". This "
4087  "currently isn't handled correctly in combination with "
4088  "empty_moov.\n", pkt->stream_index, pkt->dts);
4089  }
4090  trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
4091  trk->last_sample_is_subtitle_end = 0;
4092 
4093  if (pkt->pts == AV_NOPTS_VALUE) {
4094  av_log(s, AV_LOG_WARNING, "pts has no value\n");
4095  pkt->pts = pkt->dts;
4096  }
4097  if (pkt->dts != pkt->pts)
4098  trk->flags |= MOV_TRACK_CTTS;
4099  trk->cluster[trk->entry].cts = pkt->pts - pkt->dts;
4100  trk->cluster[trk->entry].flags = 0;
4101  if (enc->codec_id == AV_CODEC_ID_VC1) {
4102  mov_parse_vc1_frame(pkt, trk, mov->fragments);
4103  } else if (pkt->flags & AV_PKT_FLAG_KEY) {
4104  if (mov->mode == MODE_MOV && enc->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
4105  trk->entry > 0) { // force sync sample for the first key frame
4106  mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
4107  if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
4108  trk->flags |= MOV_TRACK_STPS;
4109  } else {
4110  trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
4111  }
4112  if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
4113  trk->has_keyframes++;
4114  }
4115  trk->entry++;
4116  trk->sample_count += samples_in_chunk;
4117  mov->mdat_size += size;
4118 
4119  if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
4120  ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
4121  reformatted_data, size);
4122 
4123 end:
4124 err:
4125 
4126  av_free(reformatted_data);
4127  return ret;
4128 }
4129 
4131 {
4132  MOVMuxContext *mov = s->priv_data;
4133  MOVTrack *trk = &mov->tracks[pkt->stream_index];
4134  AVCodecContext *enc = trk->enc;
4135  int64_t frag_duration = 0;
4136  int size = pkt->size;
4137 
4138  if (!pkt->size)
4139  return 0; /* Discard 0 sized packets */
4140 
4141  if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
4142  int i;
4143  for (i = 0; i < s->nb_streams; i++)
4144  mov->tracks[i].frag_discont = 1;
4146  }
4147 
4148  if (trk->entry && pkt->stream_index < s->nb_streams)
4149  frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
4150  s->streams[pkt->stream_index]->time_base,
4151  AV_TIME_BASE_Q);
4152  if ((mov->max_fragment_duration &&
4153  frag_duration >= mov->max_fragment_duration) ||
4154  (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
4155  (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
4156  enc->codec_type == AVMEDIA_TYPE_VIDEO &&
4157  trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
4158  if (frag_duration >= mov->min_fragment_duration)
4159  mov_flush_fragment(s);
4160  }
4161 
4162  return ff_mov_write_packet(s, pkt);
4163 }
4164 
4166  int stream_index,
4167  int64_t dts) {
4168  AVPacket end;
4169  uint8_t data[2] = {0};
4170  int ret;
4171 
4172  av_init_packet(&end);
4173  end.size = sizeof(data);
4174  end.data = data;
4175  end.pts = dts;
4176  end.dts = dts;
4177  end.duration = 0;
4178  end.stream_index = stream_index;
4179 
4180  ret = mov_write_single_packet(s, &end);
4181  av_free_packet(&end);
4182 
4183  return ret;
4184 }
4185 
4187 {
4188  if (!pkt) {
4189  mov_flush_fragment(s);
4190  return 1;
4191  } else {
4192  int i;
4193  MOVMuxContext *mov = s->priv_data;
4194 
4195  if (!pkt->size) return 0; /* Discard 0 sized packets */
4196 
4197  /*
4198  * Subtitles require special handling.
4199  *
4200  * 1) For full complaince, every track must have a sample at
4201  * dts == 0, which is rarely true for subtitles. So, as soon
4202  * as we see any packet with dts > 0, write an empty subtitle
4203  * at dts == 0 for any subtitle track with no samples in it.
4204  *
4205  * 2) For each subtitle track, check if the current packet's
4206  * dts is past the duration of the last subtitle sample. If
4207  * so, we now need to write an end sample for that subtitle.
4208  *
4209  * This must be done conditionally to allow for subtitles that
4210  * immediately replace each other, in which case an end sample
4211  * is not needed, and is, in fact, actively harmful.
4212  *
4213  * 3) See mov_write_trailer for how the final end sample is
4214  * handled.
4215  */
4216  for (i = 0; i < mov->nb_streams; i++) {
4217  MOVTrack *trk = &mov->tracks[i];
4218  int ret;
4219 
4220  if (trk->enc->codec_id == AV_CODEC_ID_MOV_TEXT &&
4221  trk->track_duration < pkt->dts &&
4222  (trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {
4224  if (ret < 0) return ret;
4225  trk->last_sample_is_subtitle_end = 1;
4226  }
4227  }
4228 
4229  return mov_write_single_packet(s, pkt);
4230  }
4231 }
4232 
4233 // QuickTime chapters involve an additional text track with the chapter names
4234 // as samples, and a tref pointing from the other tracks to the chapter one.
4235 static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
4236 {
4237  AVIOContext *pb;
4238 
4239  MOVMuxContext *mov = s->priv_data;
4240  MOVTrack *track = &mov->tracks[tracknum];
4241  AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
4242  int i, len;
4243 
4244  track->mode = mov->mode;
4245  track->tag = MKTAG('t','e','x','t');
4246  track->timescale = MOV_TIMESCALE;
4247  track->enc = avcodec_alloc_context3(NULL);
4248  if (!track->enc)
4249  return AVERROR(ENOMEM);
4251 #if 0
4252  // These properties are required to make QT recognize the chapter track
4253  uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
4254  if (ff_alloc_extradata(track->enc, sizeof(chapter_properties)))
4255  return AVERROR(ENOMEM);
4256  memcpy(track->enc->extradata, chapter_properties, sizeof(chapter_properties));
4257 #else
4258  if (avio_open_dyn_buf(&pb) >= 0) {
4259  int size;
4260  uint8_t *buf;
4261 
4262  /* Stub header (usually for Quicktime chapter track) */
4263  // TextSampleEntry
4264  avio_wb32(pb, 0x01); // displayFlags
4265  avio_w8(pb, 0x00); // horizontal justification
4266  avio_w8(pb, 0x00); // vertical justification
4267  avio_w8(pb, 0x00); // bgColourRed
4268  avio_w8(pb, 0x00); // bgColourGreen
4269&#