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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"
35 #include "libavcodec/dnxhddata.h"
36 #include "libavcodec/flac.h"
37 #include "libavcodec/get_bits.h"
38 
39 #include "libavcodec/internal.h"
40 #include "libavcodec/put_bits.h"
41 #include "libavcodec/vc1_common.h"
42 #include "libavcodec/raw.h"
43 #include "internal.h"
44 #include "libavutil/avstring.h"
45 #include "libavutil/intfloat.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/libm.h"
48 #include "libavutil/opt.h"
49 #include "libavutil/dict.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/stereo3d.h"
52 #include "libavutil/timecode.h"
53 #include "libavutil/color_utils.h"
54 #include "hevc.h"
55 #include "rtpenc.h"
56 #include "mov_chan.h"
57 #include "vpcc.h"
58 
59 static const AVOption options[] = {
60  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
61  { "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" },
62  { "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 },
63  { "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" },
64  { "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" },
65  { "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" },
66  { "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" },
67  { "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" },
68  { "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" },
69  { "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" },
70  { "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" },
71  { "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" },
72  { "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" },
73  { "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" },
74  { "delay_moov", "Delay writing the initial moov until the first fragment is cut, or until the first fragment flush", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DELAY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
75  { "global_sidx", "Write a global sidx index at the start of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_GLOBAL_SIDX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
76  { "write_colr", "Write colr atom (Experimental, may be renamed or changed, do not use from scripts)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_COLR}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
77  { "write_gama", "Write deprecated gama atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_GAMA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
78  { "use_metadata_tags", "Use mdta atom for metadata.", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_USE_MDTA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
79  { "skip_trailer", "Skip writing the mfra/tfra/mfro trailer for fragmented files", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_TRAILER}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
80  { "negative_cts_offsets", "Use negative CTS offsets (reducing the need for edit lists)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
81  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
82  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
83  { "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},
84  { "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},
85  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
86  { "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},
87  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
88  { "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},
89  { "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},
90  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
91  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
92  { "fragment_index", "Fragment number of the next fragment", offsetof(MOVMuxContext, fragments), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
93  { "mov_gamma", "gamma value for gama atom", offsetof(MOVMuxContext, gamma), AV_OPT_TYPE_FLOAT, {.dbl = 0.0 }, 0.0, 10, AV_OPT_FLAG_ENCODING_PARAM},
94  { "frag_interleave", "Interleave samples within fragments (max number of consecutive samples, lower is tighter interleaving, but with more overhead)", offsetof(MOVMuxContext, frag_interleave), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
95  { "encryption_scheme", "Configures the encryption scheme, allowed values are none, cenc-aes-ctr", offsetof(MOVMuxContext, encryption_scheme_str), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
96  { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
97  { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
98  { "use_stream_ids_as_track_ids", "use stream ids as track ids", offsetof(MOVMuxContext, use_stream_ids_as_track_ids), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
99  { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
100  { NULL },
101 };
102 
103 #define MOV_CLASS(flavor)\
104 static const AVClass flavor ## _muxer_class = {\
105  .class_name = #flavor " muxer",\
106  .item_name = av_default_item_name,\
107  .option = options,\
108  .version = LIBAVUTIL_VERSION_INT,\
109 };
110 
111 static int get_moov_size(AVFormatContext *s);
112 
113 static int utf8len(const uint8_t *b)
114 {
115  int len = 0;
116  int val;
117  while (*b) {
118  GET_UTF8(val, *b++, return -1;)
119  len++;
120  }
121  return len;
122 }
123 
124 //FIXME support 64 bit variant with wide placeholders
125 static int64_t update_size(AVIOContext *pb, int64_t pos)
126 {
127  int64_t curpos = avio_tell(pb);
128  avio_seek(pb, pos, SEEK_SET);
129  avio_wb32(pb, curpos - pos); /* rewrite size */
130  avio_seek(pb, curpos, SEEK_SET);
131 
132  return curpos - pos;
133 }
134 
135 static int co64_required(const MOVTrack *track)
136 {
137  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
138  return 1;
139  return 0;
140 }
141 
142 /* Chunk offset atom */
143 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
144 {
145  int i;
146  int mode64 = co64_required(track); // use 32 bit size variant if possible
147  int64_t pos = avio_tell(pb);
148  avio_wb32(pb, 0); /* size */
149  if (mode64)
150  ffio_wfourcc(pb, "co64");
151  else
152  ffio_wfourcc(pb, "stco");
153  avio_wb32(pb, 0); /* version & flags */
154  avio_wb32(pb, track->chunkCount); /* entry count */
155  for (i = 0; i < track->entry; i++) {
156  if (!track->cluster[i].chunkNum)
157  continue;
158  if (mode64 == 1)
159  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
160  else
161  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
162  }
163  return update_size(pb, pos);
164 }
165 
166 /* Sample size atom */
167 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
168 {
169  int equalChunks = 1;
170  int i, j, entries = 0, tst = -1, oldtst = -1;
171 
172  int64_t pos = avio_tell(pb);
173  avio_wb32(pb, 0); /* size */
174  ffio_wfourcc(pb, "stsz");
175  avio_wb32(pb, 0); /* version & flags */
176 
177  for (i = 0; i < track->entry; i++) {
178  tst = track->cluster[i].size / track->cluster[i].entries;
179  if (oldtst != -1 && tst != oldtst)
180  equalChunks = 0;
181  oldtst = tst;
182  entries += track->cluster[i].entries;
183  }
184  if (equalChunks && track->entry) {
185  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
186  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
187  avio_wb32(pb, sSize); // sample size
188  avio_wb32(pb, entries); // sample count
189  } else {
190  avio_wb32(pb, 0); // sample size
191  avio_wb32(pb, entries); // sample count
192  for (i = 0; i < track->entry; i++) {
193  for (j = 0; j < track->cluster[i].entries; j++) {
194  avio_wb32(pb, track->cluster[i].size /
195  track->cluster[i].entries);
196  }
197  }
198  }
199  return update_size(pb, pos);
200 }
201 
202 /* Sample to chunk atom */
203 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
204 {
205  int index = 0, oldval = -1, i;
206  int64_t entryPos, curpos;
207 
208  int64_t pos = avio_tell(pb);
209  avio_wb32(pb, 0); /* size */
210  ffio_wfourcc(pb, "stsc");
211  avio_wb32(pb, 0); // version & flags
212  entryPos = avio_tell(pb);
213  avio_wb32(pb, track->chunkCount); // entry count
214  for (i = 0; i < track->entry; i++) {
215  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
216  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
217  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
218  avio_wb32(pb, 0x1); // sample description index
219  oldval = track->cluster[i].samples_in_chunk;
220  index++;
221  }
222  }
223  curpos = avio_tell(pb);
224  avio_seek(pb, entryPos, SEEK_SET);
225  avio_wb32(pb, index); // rewrite size
226  avio_seek(pb, curpos, SEEK_SET);
227 
228  return update_size(pb, pos);
229 }
230 
231 /* Sync sample atom */
232 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
233 {
234  int64_t curpos, entryPos;
235  int i, index = 0;
236  int64_t pos = avio_tell(pb);
237  avio_wb32(pb, 0); // size
238  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
239  avio_wb32(pb, 0); // version & flags
240  entryPos = avio_tell(pb);
241  avio_wb32(pb, track->entry); // entry count
242  for (i = 0; i < track->entry; i++) {
243  if (track->cluster[i].flags & flag) {
244  avio_wb32(pb, i + 1);
245  index++;
246  }
247  }
248  curpos = avio_tell(pb);
249  avio_seek(pb, entryPos, SEEK_SET);
250  avio_wb32(pb, index); // rewrite size
251  avio_seek(pb, curpos, SEEK_SET);
252  return update_size(pb, pos);
253 }
254 
255 /* Sample dependency atom */
256 static int mov_write_sdtp_tag(AVIOContext *pb, MOVTrack *track)
257 {
258  int i;
259  uint8_t leading, dependent, reference, redundancy;
260  int64_t pos = avio_tell(pb);
261  avio_wb32(pb, 0); // size
262  ffio_wfourcc(pb, "sdtp");
263  avio_wb32(pb, 0); // version & flags
264  for (i = 0; i < track->entry; i++) {
265  dependent = MOV_SAMPLE_DEPENDENCY_YES;
266  leading = reference = redundancy = MOV_SAMPLE_DEPENDENCY_UNKNOWN;
267  if (track->cluster[i].flags & MOV_DISPOSABLE_SAMPLE) {
268  reference = MOV_SAMPLE_DEPENDENCY_NO;
269  }
270  if (track->cluster[i].flags & MOV_SYNC_SAMPLE) {
271  dependent = MOV_SAMPLE_DEPENDENCY_NO;
272  }
273  avio_w8(pb, (leading << 6) | (dependent << 4) |
274  (reference << 2) | redundancy);
275  }
276  return update_size(pb, pos);
277 }
278 
279 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
280 {
281  avio_wb32(pb, 0x11); /* size */
282  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
283  else ffio_wfourcc(pb, "damr");
284  ffio_wfourcc(pb, "FFMP");
285  avio_w8(pb, 0); /* decoder version */
286 
287  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
288  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
289  avio_w8(pb, 0x01); /* Frames per sample */
290  return 0x11;
291 }
292 
293 static int mov_write_ac3_tag(AVIOContext *pb, MOVTrack *track)
294 {
295  GetBitContext gbc;
296  PutBitContext pbc;
297  uint8_t buf[3];
298  int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
299 
300  if (track->vos_len < 7)
301  return -1;
302 
303  avio_wb32(pb, 11);
304  ffio_wfourcc(pb, "dac3");
305 
306  init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
307  fscod = get_bits(&gbc, 2);
308  frmsizecod = get_bits(&gbc, 6);
309  bsid = get_bits(&gbc, 5);
310  bsmod = get_bits(&gbc, 3);
311  acmod = get_bits(&gbc, 3);
312  if (acmod == 2) {
313  skip_bits(&gbc, 2); // dsurmod
314  } else {
315  if ((acmod & 1) && acmod != 1)
316  skip_bits(&gbc, 2); // cmixlev
317  if (acmod & 4)
318  skip_bits(&gbc, 2); // surmixlev
319  }
320  lfeon = get_bits1(&gbc);
321 
322  init_put_bits(&pbc, buf, sizeof(buf));
323  put_bits(&pbc, 2, fscod);
324  put_bits(&pbc, 5, bsid);
325  put_bits(&pbc, 3, bsmod);
326  put_bits(&pbc, 3, acmod);
327  put_bits(&pbc, 1, lfeon);
328  put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
329  put_bits(&pbc, 5, 0); // reserved
330 
331  flush_put_bits(&pbc);
332  avio_write(pb, buf, sizeof(buf));
333 
334  return 11;
335 }
336 
337 struct eac3_info {
341 
342  /* Layout of the EC3SpecificBox */
343  /* maximum bitrate */
344  uint16_t data_rate;
345  /* number of independent substreams */
347  struct {
348  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
350  /* bit stream identification 5 bits */
352  /* one bit reserved */
353  /* audio service mixing (not supported yet) 1 bit */
354  /* bit stream mode 3 bits */
356  /* audio coding mode 3 bits */
358  /* sub woofer on 1 bit */
360  /* 3 bits reserved */
361  /* number of dependent substreams associated with this substream 4 bits */
363  /* channel locations of the dependent substream(s), if any, 9 bits */
364  uint16_t chan_loc;
365  /* if there is no dependent substream, then one bit reserved instead */
366  } substream[1]; /* TODO: support 8 independent substreams */
367 };
368 
369 #if CONFIG_AC3_PARSER
370 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
371 {
372  AC3HeaderInfo *hdr = NULL;
373  struct eac3_info *info;
374  int num_blocks, ret;
375 
376  if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
377  return AVERROR(ENOMEM);
378  info = track->eac3_priv;
379 
380  if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) < 0) {
381  /* drop the packets until we see a good one */
382  if (!track->entry) {
383  av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
384  ret = 0;
385  } else
386  ret = AVERROR_INVALIDDATA;
387  goto end;
388  }
389 
390  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
391  num_blocks = hdr->num_blocks;
392 
393  if (!info->ec3_done) {
394  /* AC-3 substream must be the first one */
395  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0) {
396  ret = AVERROR(EINVAL);
397  goto end;
398  }
399 
400  /* this should always be the case, given that our AC-3 parser
401  * concatenates dependent frames to their independent parent */
403  /* substream ids must be incremental */
404  if (hdr->substreamid > info->num_ind_sub + 1) {
405  ret = AVERROR(EINVAL);
406  goto end;
407  }
408 
409  if (hdr->substreamid == info->num_ind_sub + 1) {
410  //info->num_ind_sub++;
411  avpriv_request_sample(track->par, "Multiple independent substreams");
412  ret = AVERROR_PATCHWELCOME;
413  goto end;
414  } else if (hdr->substreamid < info->num_ind_sub ||
415  hdr->substreamid == 0 && info->substream[0].bsid) {
416  info->ec3_done = 1;
417  goto concatenate;
418  }
419  }
420 
421  /* fill the info needed for the "dec3" atom */
422  info->substream[hdr->substreamid].fscod = hdr->sr_code;
423  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
424  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
425  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
426  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
427 
428  /* Parse dependent substream(s), if any */
429  if (pkt->size != hdr->frame_size) {
430  int cumul_size = hdr->frame_size;
431  int parent = hdr->substreamid;
432 
433  while (cumul_size != pkt->size) {
434  GetBitContext gbc;
435  int i;
436  ret = avpriv_ac3_parse_header(&hdr, pkt->data + cumul_size, pkt->size - cumul_size);
437  if (ret < 0)
438  goto end;
440  ret = AVERROR(EINVAL);
441  goto end;
442  }
443  info->substream[parent].num_dep_sub++;
444  ret /= 8;
445 
446  /* header is parsed up to lfeon, but custom channel map may be needed */
447  init_get_bits8(&gbc, pkt->data + cumul_size + ret, pkt->size - cumul_size - ret);
448  /* skip bsid */
449  skip_bits(&gbc, 5);
450  /* skip volume control params */
451  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
452  skip_bits(&gbc, 5); // skip dialog normalization
453  if (get_bits1(&gbc)) {
454  skip_bits(&gbc, 8); // skip compression gain word
455  }
456  }
457  /* get the dependent stream channel map, if exists */
458  if (get_bits1(&gbc))
459  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
460  else
461  info->substream[parent].chan_loc |= hdr->channel_mode;
462  cumul_size += hdr->frame_size;
463  }
464  }
465  }
466 
467 concatenate:
468  if (!info->num_blocks && num_blocks == 6) {
469  ret = pkt->size;
470  goto end;
471  }
472  else if (info->num_blocks + num_blocks > 6) {
473  ret = AVERROR_INVALIDDATA;
474  goto end;
475  }
476 
477  if (!info->num_blocks) {
478  ret = av_packet_ref(&info->pkt, pkt);
479  if (!ret)
480  info->num_blocks = num_blocks;
481  goto end;
482  } else {
483  if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
484  goto end;
485  memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
486  info->num_blocks += num_blocks;
487  info->pkt.duration += pkt->duration;
488  if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
489  goto end;
490  if (info->num_blocks != 6)
491  goto end;
492  av_packet_unref(pkt);
493  ret = av_packet_ref(pkt, &info->pkt);
494  if (ret < 0)
495  goto end;
496  av_packet_unref(&info->pkt);
497  info->num_blocks = 0;
498  }
499  ret = pkt->size;
500 
501 end:
502  av_free(hdr);
503 
504  return ret;
505 }
506 #endif
507 
508 static int mov_write_eac3_tag(AVIOContext *pb, MOVTrack *track)
509 {
510  PutBitContext pbc;
511  uint8_t *buf;
512  struct eac3_info *info;
513  int size, i;
514 
515  if (!track->eac3_priv)
516  return AVERROR(EINVAL);
517 
518  info = track->eac3_priv;
519  size = 2 + 4 * (info->num_ind_sub + 1);
520  buf = av_malloc(size);
521  if (!buf) {
522  size = AVERROR(ENOMEM);
523  goto end;
524  }
525 
526  init_put_bits(&pbc, buf, size);
527  put_bits(&pbc, 13, info->data_rate);
528  put_bits(&pbc, 3, info->num_ind_sub);
529  for (i = 0; i <= info->num_ind_sub; i++) {
530  put_bits(&pbc, 2, info->substream[i].fscod);
531  put_bits(&pbc, 5, info->substream[i].bsid);
532  put_bits(&pbc, 1, 0); /* reserved */
533  put_bits(&pbc, 1, 0); /* asvc */
534  put_bits(&pbc, 3, info->substream[i].bsmod);
535  put_bits(&pbc, 3, info->substream[i].acmod);
536  put_bits(&pbc, 1, info->substream[i].lfeon);
537  put_bits(&pbc, 5, 0); /* reserved */
538  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
539  if (!info->substream[i].num_dep_sub) {
540  put_bits(&pbc, 1, 0); /* reserved */
541  size--;
542  } else {
543  put_bits(&pbc, 9, info->substream[i].chan_loc);
544  }
545  }
546  flush_put_bits(&pbc);
547 
548  avio_wb32(pb, size + 8);
549  ffio_wfourcc(pb, "dec3");
550  avio_write(pb, buf, size);
551 
552  av_free(buf);
553 
554 end:
555  av_packet_unref(&info->pkt);
556  av_freep(&track->eac3_priv);
557 
558  return size;
559 }
560 
561 /**
562  * This function writes extradata "as is".
563  * Extradata must be formatted like a valid atom (with size and tag).
564  */
566 {
567  avio_write(pb, track->par->extradata, track->par->extradata_size);
568  return track->par->extradata_size;
569 }
570 
572 {
573  avio_wb32(pb, 10);
574  ffio_wfourcc(pb, "enda");
575  avio_wb16(pb, 1); /* little endian */
576  return 10;
577 }
578 
580 {
581  avio_wb32(pb, 10);
582  ffio_wfourcc(pb, "enda");
583  avio_wb16(pb, 0); /* big endian */
584  return 10;
585 }
586 
587 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
588 {
589  int i = 3;
590  avio_w8(pb, tag);
591  for (; i > 0; i--)
592  avio_w8(pb, (size >> (7 * i)) | 0x80);
593  avio_w8(pb, size & 0x7F);
594 }
595 
596 static unsigned compute_avg_bitrate(MOVTrack *track)
597 {
598  uint64_t size = 0;
599  int i;
600  if (!track->track_duration)
601  return 0;
602  for (i = 0; i < track->entry; i++)
603  size += track->cluster[i].size;
604  return size * 8 * track->timescale / track->track_duration;
605 }
606 
607 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
608 {
609  AVCPBProperties *props;
610  int64_t pos = avio_tell(pb);
611  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
612  unsigned avg_bitrate;
613 
614  avio_wb32(pb, 0); // size
615  ffio_wfourcc(pb, "esds");
616  avio_wb32(pb, 0); // Version
617 
618  // ES descriptor
619  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
620  avio_wb16(pb, track->track_id);
621  avio_w8(pb, 0x00); // flags (= no flags)
622 
623  // DecoderConfig descriptor
624  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
625 
626  // Object type indication
627  if ((track->par->codec_id == AV_CODEC_ID_MP2 ||
628  track->par->codec_id == AV_CODEC_ID_MP3) &&
629  track->par->sample_rate > 24000)
630  avio_w8(pb, 0x6B); // 11172-3
631  else
633 
634  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
635  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
636  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
637  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
638  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
639  avio_w8(pb, 0x15); // flags (= Audiostream)
640  else
641  avio_w8(pb, 0x11); // flags (= Visualstream)
642 
644  NULL);
645 
646  avio_wb24(pb, props ? props->buffer_size / 8 : 0); // Buffersize DB
647 
648  avg_bitrate = compute_avg_bitrate(track);
649  avio_wb32(pb, props ? FFMAX3(props->max_bitrate, props->avg_bitrate, avg_bitrate) : FFMAX(track->par->bit_rate, avg_bitrate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
650  avio_wb32(pb, avg_bitrate);
651 
652  if (track->vos_len) {
653  // DecoderSpecific info descriptor
654  put_descr(pb, 0x05, track->vos_len);
655  avio_write(pb, track->vos_data, track->vos_len);
656  }
657 
658  // SL descriptor
659  put_descr(pb, 0x06, 1);
660  avio_w8(pb, 0x02);
661  return update_size(pb, pos);
662 }
663 
665 {
666  return codec_id == AV_CODEC_ID_PCM_S24LE ||
667  codec_id == AV_CODEC_ID_PCM_S32LE ||
668  codec_id == AV_CODEC_ID_PCM_F32LE ||
669  codec_id == AV_CODEC_ID_PCM_F64LE;
670 }
671 
673 {
674  return codec_id == AV_CODEC_ID_PCM_S24BE ||
675  codec_id == AV_CODEC_ID_PCM_S32BE ||
676  codec_id == AV_CODEC_ID_PCM_F32BE ||
677  codec_id == AV_CODEC_ID_PCM_F64BE;
678 }
679 
681 {
682  int ret;
683  int64_t pos = avio_tell(pb);
684  avio_wb32(pb, 0);
685  avio_wl32(pb, track->tag); // store it byteswapped
686  track->par->codec_tag = av_bswap16(track->tag >> 16);
687  if ((ret = ff_put_wav_header(s, pb, track->par, 0)) < 0)
688  return ret;
689  return update_size(pb, pos);
690 }
691 
693 {
694  int ret;
695  int64_t pos = avio_tell(pb);
696  avio_wb32(pb, 0);
697  ffio_wfourcc(pb, "wfex");
698  if ((ret = ff_put_wav_header(s, pb, track->st->codecpar, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
699  return ret;
700  return update_size(pb, pos);
701 }
702 
703 static int mov_write_dfla_tag(AVIOContext *pb, MOVTrack *track)
704 {
705  int64_t pos = avio_tell(pb);
706  avio_wb32(pb, 0);
707  ffio_wfourcc(pb, "dfLa");
708  avio_w8(pb, 0); /* version */
709  avio_wb24(pb, 0); /* flags */
710 
711  /* Expect the encoder to pass a METADATA_BLOCK_TYPE_STREAMINFO. */
712  if (track->par->extradata_size != FLAC_STREAMINFO_SIZE)
713  return AVERROR_INVALIDDATA;
714 
715  /* TODO: Write other METADATA_BLOCK_TYPEs if the encoder makes them available. */
716  avio_w8(pb, 1 << 7 | FLAC_METADATA_TYPE_STREAMINFO); /* LastMetadataBlockFlag << 7 | BlockType */
717  avio_wb24(pb, track->par->extradata_size); /* Length */
718  avio_write(pb, track->par->extradata, track->par->extradata_size); /* BlockData[Length] */
719 
720  return update_size(pb, pos);
721 }
722 
723 static int mov_write_dops_tag(AVIOContext *pb, MOVTrack *track)
724 {
725  int64_t pos = avio_tell(pb);
726  avio_wb32(pb, 0);
727  ffio_wfourcc(pb, "dOps");
728  avio_w8(pb, 0); /* Version */
729  if (track->par->extradata_size < 19) {
730  av_log(pb, AV_LOG_ERROR, "invalid extradata size\n");
731  return AVERROR_INVALIDDATA;
732  }
733  /* extradata contains an Ogg OpusHead, other than byte-ordering and
734  OpusHead's preceeding magic/version, OpusSpecificBox is currently
735  identical. */
736  avio_w8(pb, AV_RB8(track->par->extradata + 9)); /* OuputChannelCount */
737  avio_wb16(pb, AV_RL16(track->par->extradata + 10)); /* PreSkip */
738  avio_wb32(pb, AV_RL32(track->par->extradata + 12)); /* InputSampleRate */
739  avio_wb16(pb, AV_RL16(track->par->extradata + 16)); /* OutputGain */
740  /* Write the rest of the header out without byte-swapping. */
741  avio_write(pb, track->par->extradata + 18, track->par->extradata_size - 18);
742 
743  return update_size(pb, pos);
744 }
745 
747 {
748  uint32_t layout_tag, bitmap;
749  int64_t pos = avio_tell(pb);
750 
751  layout_tag = ff_mov_get_channel_layout_tag(track->par->codec_id,
752  track->par->channel_layout,
753  &bitmap);
754  if (!layout_tag) {
755  av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "
756  "lack of channel information\n");
757  return 0;
758  }
759 
760  if (track->multichannel_as_mono)
761  return 0;
762 
763  avio_wb32(pb, 0); // Size
764  ffio_wfourcc(pb, "chan"); // Type
765  avio_w8(pb, 0); // Version
766  avio_wb24(pb, 0); // Flags
767  avio_wb32(pb, layout_tag); // mChannelLayoutTag
768  avio_wb32(pb, bitmap); // mChannelBitmap
769  avio_wb32(pb, 0); // mNumberChannelDescriptions
770 
771  return update_size(pb, pos);
772 }
773 
775 {
776  int64_t pos = avio_tell(pb);
777 
778  avio_wb32(pb, 0); /* size */
779  ffio_wfourcc(pb, "wave");
780 
781  if (track->par->codec_id != AV_CODEC_ID_QDM2) {
782  avio_wb32(pb, 12); /* size */
783  ffio_wfourcc(pb, "frma");
784  avio_wl32(pb, track->tag);
785  }
786 
787  if (track->par->codec_id == AV_CODEC_ID_AAC) {
788  /* useless atom needed by mplayer, ipod, not needed by quicktime */
789  avio_wb32(pb, 12); /* size */
790  ffio_wfourcc(pb, "mp4a");
791  avio_wb32(pb, 0);
792  mov_write_esds_tag(pb, track);
793  } else if (mov_pcm_le_gt16(track->par->codec_id)) {
794  mov_write_enda_tag(pb);
795  } else if (mov_pcm_be_gt16(track->par->codec_id)) {
797  } else if (track->par->codec_id == AV_CODEC_ID_AMR_NB) {
798  mov_write_amr_tag(pb, track);
799  } else if (track->par->codec_id == AV_CODEC_ID_AC3) {
800  mov_write_ac3_tag(pb, track);
801  } else if (track->par->codec_id == AV_CODEC_ID_EAC3) {
802  mov_write_eac3_tag(pb, track);
803  } else if (track->par->codec_id == AV_CODEC_ID_ALAC ||
804  track->par->codec_id == AV_CODEC_ID_QDM2) {
805  mov_write_extradata_tag(pb, track);
806  } else if (track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
808  mov_write_ms_tag(s, pb, track);
809  }
810 
811  avio_wb32(pb, 8); /* size */
812  avio_wb32(pb, 0); /* null tag */
813 
814  return update_size(pb, pos);
815 }
816 
818 {
819  uint8_t *unescaped;
820  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
821  int unescaped_size, seq_found = 0;
822  int level = 0, interlace = 0;
823  int packet_seq = track->vc1_info.packet_seq;
824  int packet_entry = track->vc1_info.packet_entry;
825  int slices = track->vc1_info.slices;
826  PutBitContext pbc;
827 
828  if (track->start_dts == AV_NOPTS_VALUE) {
829  /* No packets written yet, vc1_info isn't authoritative yet. */
830  /* Assume inline sequence and entry headers. */
831  packet_seq = packet_entry = 1;
833  "moov atom written before any packets, unable to write correct "
834  "dvc1 atom. Set the delay_moov flag to fix this.\n");
835  }
836 
837  unescaped = av_mallocz(track->vos_len + AV_INPUT_BUFFER_PADDING_SIZE);
838  if (!unescaped)
839  return AVERROR(ENOMEM);
840  start = find_next_marker(track->vos_data, end);
841  for (next = start; next < end; start = next) {
842  GetBitContext gb;
843  int size;
844  next = find_next_marker(start + 4, end);
845  size = next - start - 4;
846  if (size <= 0)
847  continue;
848  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
849  init_get_bits(&gb, unescaped, 8 * unescaped_size);
850  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
851  int profile = get_bits(&gb, 2);
852  if (profile != PROFILE_ADVANCED) {
853  av_free(unescaped);
854  return AVERROR(ENOSYS);
855  }
856  seq_found = 1;
857  level = get_bits(&gb, 3);
858  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
859  * width, height */
860  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
861  skip_bits(&gb, 1); /* broadcast */
862  interlace = get_bits1(&gb);
863  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
864  }
865  }
866  if (!seq_found) {
867  av_free(unescaped);
868  return AVERROR(ENOSYS);
869  }
870 
871  init_put_bits(&pbc, buf, 7);
872  /* VC1DecSpecStruc */
873  put_bits(&pbc, 4, 12); /* profile - advanced */
874  put_bits(&pbc, 3, level);
875  put_bits(&pbc, 1, 0); /* reserved */
876  /* VC1AdvDecSpecStruc */
877  put_bits(&pbc, 3, level);
878  put_bits(&pbc, 1, 0); /* cbr */
879  put_bits(&pbc, 6, 0); /* reserved */
880  put_bits(&pbc, 1, !interlace); /* no interlace */
881  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
882  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
883  put_bits(&pbc, 1, !slices); /* no slice code */
884  put_bits(&pbc, 1, 0); /* no bframe */
885  put_bits(&pbc, 1, 0); /* reserved */
886 
887  /* framerate */
888  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
889  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
890  else
891  put_bits32(&pbc, 0xffffffff);
892 
893  flush_put_bits(&pbc);
894 
895  av_free(unescaped);
896 
897  return 0;
898 }
899 
900 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
901 {
902  uint8_t buf[7] = { 0 };
903  int ret;
904 
905  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
906  return ret;
907 
908  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
909  ffio_wfourcc(pb, "dvc1");
910  avio_write(pb, buf, sizeof(buf));
911  avio_write(pb, track->vos_data, track->vos_len);
912 
913  return 0;
914 }
915 
916 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
917 {
918  avio_wb32(pb, track->vos_len + 8);
919  ffio_wfourcc(pb, "glbl");
920  avio_write(pb, track->vos_data, track->vos_len);
921  return 8 + track->vos_len;
922 }
923 
924 /**
925  * Compute flags for 'lpcm' tag.
926  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
927  */
929 {
930  switch (codec_id) {
933  return 11;
936  return 9;
937  case AV_CODEC_ID_PCM_U8:
938  return 10;
942  return 14;
943  case AV_CODEC_ID_PCM_S8:
947  return 12;
948  default:
949  return 0;
950  }
951 }
952 
953 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
954 {
955  int64_t next_dts;
956 
957  if (cluster_idx >= track->entry)
958  return 0;
959 
960  if (cluster_idx + 1 == track->entry)
961  next_dts = track->track_duration + track->start_dts;
962  else
963  next_dts = track->cluster[cluster_idx + 1].dts;
964 
965  next_dts -= track->cluster[cluster_idx].dts;
966 
967  av_assert0(next_dts >= 0);
968  av_assert0(next_dts <= INT_MAX);
969 
970  return next_dts;
971 }
972 
974 {
975  int i, first_duration;
976 
977 // return track->par->frame_size;
978 
979  /* use 1 for raw PCM */
980  if (!track->audio_vbr)
981  return 1;
982 
983  /* check to see if duration is constant for all clusters */
984  if (!track->entry)
985  return 0;
986  first_duration = get_cluster_duration(track, 0);
987  for (i = 1; i < track->entry; i++) {
988  if (get_cluster_duration(track, i) != first_duration)
989  return 0;
990  }
991  return first_duration;
992 }
993 
995 {
996  int64_t pos = avio_tell(pb);
997  int version = 0;
998  uint32_t tag = track->tag;
999 
1000  if (track->mode == MODE_MOV) {
1001  if (track->timescale > UINT16_MAX) {
1002  if (mov_get_lpcm_flags(track->par->codec_id))
1003  tag = AV_RL32("lpcm");
1004  version = 2;
1005  } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||
1006  mov_pcm_be_gt16(track->par->codec_id) ||
1007  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1008  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1009  track->par->codec_id == AV_CODEC_ID_QDM2) {
1010  version = 1;
1011  }
1012  }
1013 
1014  avio_wb32(pb, 0); /* size */
1015  if (mov->encryption_scheme != MOV_ENC_NONE) {
1016  ffio_wfourcc(pb, "enca");
1017  } else {
1018  avio_wl32(pb, tag); // store it byteswapped
1019  }
1020  avio_wb32(pb, 0); /* Reserved */
1021  avio_wb16(pb, 0); /* Reserved */
1022  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
1023 
1024  /* SoundDescription */
1025  avio_wb16(pb, version); /* Version */
1026  avio_wb16(pb, 0); /* Revision level */
1027  avio_wb32(pb, 0); /* Reserved */
1028 
1029  if (version == 2) {
1030  avio_wb16(pb, 3);
1031  avio_wb16(pb, 16);
1032  avio_wb16(pb, 0xfffe);
1033  avio_wb16(pb, 0);
1034  avio_wb32(pb, 0x00010000);
1035  avio_wb32(pb, 72);
1036  avio_wb64(pb, av_double2int(track->par->sample_rate));
1037  avio_wb32(pb, track->par->channels);
1038  avio_wb32(pb, 0x7F000000);
1040  avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
1041  avio_wb32(pb, track->sample_size);
1042  avio_wb32(pb, get_samples_per_packet(track));
1043  } else {
1044  if (track->mode == MODE_MOV) {
1045  avio_wb16(pb, track->par->channels);
1046  if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
1047  track->par->codec_id == AV_CODEC_ID_PCM_S8)
1048  avio_wb16(pb, 8); /* bits per sample */
1049  else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
1050  avio_wb16(pb, track->par->bits_per_coded_sample);
1051  else
1052  avio_wb16(pb, 16);
1053  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
1054  } else { /* reserved for mp4/3gp */
1055  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1056  track->par->codec_id == AV_CODEC_ID_OPUS) {
1057  avio_wb16(pb, track->par->channels);
1058  } else {
1059  avio_wb16(pb, 2);
1060  }
1061  if (track->par->codec_id == AV_CODEC_ID_FLAC) {
1062  avio_wb16(pb, track->par->bits_per_raw_sample);
1063  } else {
1064  avio_wb16(pb, 16);
1065  }
1066  avio_wb16(pb, 0);
1067  }
1068 
1069  avio_wb16(pb, 0); /* packet size (= 0) */
1070  if (track->par->codec_id == AV_CODEC_ID_OPUS)
1071  avio_wb16(pb, 48000);
1072  else
1073  avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
1074  track->par->sample_rate : 0);
1075  avio_wb16(pb, 0); /* Reserved */
1076  }
1077 
1078  if (version == 1) { /* SoundDescription V1 extended info */
1079  if (mov_pcm_le_gt16(track->par->codec_id) ||
1080  mov_pcm_be_gt16(track->par->codec_id))
1081  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
1082  else
1083  avio_wb32(pb, track->par->frame_size); /* Samples per packet */
1084  avio_wb32(pb, track->sample_size / track->par->channels); /* Bytes per packet */
1085  avio_wb32(pb, track->sample_size); /* Bytes per frame */
1086  avio_wb32(pb, 2); /* Bytes per sample */
1087  }
1088 
1089  if (track->mode == MODE_MOV &&
1090  (track->par->codec_id == AV_CODEC_ID_AAC ||
1091  track->par->codec_id == AV_CODEC_ID_AC3 ||
1092  track->par->codec_id == AV_CODEC_ID_EAC3 ||
1093  track->par->codec_id == AV_CODEC_ID_AMR_NB ||
1094  track->par->codec_id == AV_CODEC_ID_ALAC ||
1095  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1096  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1097  track->par->codec_id == AV_CODEC_ID_QDM2 ||
1098  (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||
1099  (mov_pcm_be_gt16(track->par->codec_id) && version==1)))
1100  mov_write_wave_tag(s, pb, track);
1101  else if (track->tag == MKTAG('m','p','4','a'))
1102  mov_write_esds_tag(pb, track);
1103  else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)
1104  mov_write_amr_tag(pb, track);
1105  else if (track->par->codec_id == AV_CODEC_ID_AC3)
1106  mov_write_ac3_tag(pb, track);
1107  else if (track->par->codec_id == AV_CODEC_ID_EAC3)
1108  mov_write_eac3_tag(pb, track);
1109  else if (track->par->codec_id == AV_CODEC_ID_ALAC)
1110  mov_write_extradata_tag(pb, track);
1111  else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)
1112  mov_write_wfex_tag(s, pb, track);
1113  else if (track->par->codec_id == AV_CODEC_ID_FLAC)
1114  mov_write_dfla_tag(pb, track);
1115  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1116  mov_write_dops_tag(pb, track);
1117  else if (track->vos_len > 0)
1118  mov_write_glbl_tag(pb, track);
1119 
1120  if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO)
1121  mov_write_chan_tag(s, pb, track);
1122 
1123  if (mov->encryption_scheme != MOV_ENC_NONE) {
1124  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
1125  }
1126 
1127  return update_size(pb, pos);
1128 }
1129 
1131 {
1132  avio_wb32(pb, 0xf); /* size */
1133  ffio_wfourcc(pb, "d263");
1134  ffio_wfourcc(pb, "FFMP");
1135  avio_w8(pb, 0); /* decoder version */
1136  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1137  avio_w8(pb, 0xa); /* level */
1138  avio_w8(pb, 0); /* profile */
1139  return 0xf;
1140 }
1141 
1142 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1143 {
1144  int64_t pos = avio_tell(pb);
1145 
1146  avio_wb32(pb, 0);
1147  ffio_wfourcc(pb, "avcC");
1148  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1149  return update_size(pb, pos);
1150 }
1151 
1153 {
1154  int64_t pos = avio_tell(pb);
1155 
1156  avio_wb32(pb, 0);
1157  ffio_wfourcc(pb, "vpcC");
1158  avio_w8(pb, 1); /* version */
1159  avio_wb24(pb, 0); /* flags */
1160  ff_isom_write_vpcc(s, pb, track->par);
1161  return update_size(pb, pos);
1162 }
1163 
1164 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1165 {
1166  int64_t pos = avio_tell(pb);
1167 
1168  avio_wb32(pb, 0);
1169  ffio_wfourcc(pb, "hvcC");
1170  if (track->tag == MKTAG('h','v','c','1'))
1171  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1);
1172  else
1173  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1174  return update_size(pb, pos);
1175 }
1176 
1177 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1178 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1179 {
1180  int i;
1181  int interlaced;
1182  int cid;
1183  int display_width = track->par->width;
1184 
1185  if (track->vos_data && track->vos_len > 0x29) {
1186  if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {
1187  /* looks like a DNxHD bit stream */
1188  interlaced = (track->vos_data[5] & 2);
1189  cid = AV_RB32(track->vos_data + 0x28);
1190  } else {
1191  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");
1192  return 0;
1193  }
1194  } else {
1195  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");
1196  return 0;
1197  }
1198 
1199  avio_wb32(pb, 24); /* size */
1200  ffio_wfourcc(pb, "ACLR");
1201  ffio_wfourcc(pb, "ACLR");
1202  ffio_wfourcc(pb, "0001");
1203  if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */
1205  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1206  } else { /* Full range (0-255) */
1207  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1208  }
1209  avio_wb32(pb, 0); /* unknown */
1210 
1211  if (track->tag == MKTAG('A','V','d','h')) {
1212  avio_wb32(pb, 32);
1213  ffio_wfourcc(pb, "ADHR");
1214  ffio_wfourcc(pb, "0001");
1215  avio_wb32(pb, cid);
1216  avio_wb32(pb, 0); /* unknown */
1217  avio_wb32(pb, 1); /* unknown */
1218  avio_wb32(pb, 0); /* unknown */
1219  avio_wb32(pb, 0); /* unknown */
1220  return 0;
1221  }
1222 
1223  avio_wb32(pb, 24); /* size */
1224  ffio_wfourcc(pb, "APRG");
1225  ffio_wfourcc(pb, "APRG");
1226  ffio_wfourcc(pb, "0001");
1227  avio_wb32(pb, 1); /* unknown */
1228  avio_wb32(pb, 0); /* unknown */
1229 
1230  avio_wb32(pb, 120); /* size */
1231  ffio_wfourcc(pb, "ARES");
1232  ffio_wfourcc(pb, "ARES");
1233  ffio_wfourcc(pb, "0001");
1234  avio_wb32(pb, cid); /* dnxhd cid, some id ? */
1235  if ( track->par->sample_aspect_ratio.num > 0
1236  && track->par->sample_aspect_ratio.den > 0)
1237  display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;
1238  avio_wb32(pb, display_width);
1239  /* values below are based on samples created with quicktime and avid codecs */
1240  if (interlaced) {
1241  avio_wb32(pb, track->par->height / 2);
1242  avio_wb32(pb, 2); /* unknown */
1243  avio_wb32(pb, 0); /* unknown */
1244  avio_wb32(pb, 4); /* unknown */
1245  } else {
1246  avio_wb32(pb, track->par->height);
1247  avio_wb32(pb, 1); /* unknown */
1248  avio_wb32(pb, 0); /* unknown */
1249  if (track->par->height == 1080)
1250  avio_wb32(pb, 5); /* unknown */
1251  else
1252  avio_wb32(pb, 6); /* unknown */
1253  }
1254  /* padding */
1255  for (i = 0; i < 10; i++)
1256  avio_wb64(pb, 0);
1257 
1258  return 0;
1259 }
1260 
1261 static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)
1262 {
1263  avio_wb32(pb, 12);
1264  ffio_wfourcc(pb, "DpxE");
1265  if (track->par->extradata_size >= 12 &&
1266  !memcmp(&track->par->extradata[4], "DpxE", 4)) {
1267  avio_wb32(pb, track->par->extradata[11]);
1268  } else {
1269  avio_wb32(pb, 1);
1270  }
1271  return 0;
1272 }
1273 
1275 {
1276  int tag;
1277 
1278  if (track->par->width == 720) { /* SD */
1279  if (track->par->height == 480) { /* NTSC */
1280  if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1281  else tag = MKTAG('d','v','c',' ');
1282  }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1283  else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1284  else tag = MKTAG('d','v','p','p');
1285  } else if (track->par->height == 720) { /* HD 720 line */
1286  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1287  else tag = MKTAG('d','v','h','p');
1288  } else if (track->par->height == 1080) { /* HD 1080 line */
1289  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1290  else tag = MKTAG('d','v','h','6');
1291  } else {
1292  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1293  return 0;
1294  }
1295 
1296  return tag;
1297 }
1298 
1300 {
1301  AVRational rate = st->avg_frame_rate;
1302 
1303 #if FF_API_LAVF_AVCTX
1305  rate = av_inv_q(st->codec->time_base);
1306  if (av_timecode_check_frame_rate(rate) < 0) {
1307  av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
1308  rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
1309  rate = st->avg_frame_rate;
1310  }
1312 #endif
1313 
1314  return rate;
1315 }
1316 
1318 {
1319  AVRational rational_framerate = find_fps(s, st);
1320  int rate = 0;
1321  if (rational_framerate.den != 0)
1322  rate = av_q2d(rational_framerate);
1323  return rate;
1324 }
1325 
1327 {
1328  int tag = track->par->codec_tag;
1330  AVStream *st = track->st;
1331  int rate = defined_frame_rate(s, st);
1332 
1333  if (!tag)
1334  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1335 
1336  if (track->par->format == AV_PIX_FMT_YUV420P) {
1337  if (track->par->width == 1280 && track->par->height == 720) {
1338  if (!interlaced) {
1339  if (rate == 24) tag = MKTAG('x','d','v','4');
1340  else if (rate == 25) tag = MKTAG('x','d','v','5');
1341  else if (rate == 30) tag = MKTAG('x','d','v','1');
1342  else if (rate == 50) tag = MKTAG('x','d','v','a');
1343  else if (rate == 60) tag = MKTAG('x','d','v','9');
1344  }
1345  } else if (track->par->width == 1440 && track->par->height == 1080) {
1346  if (!interlaced) {
1347  if (rate == 24) tag = MKTAG('x','d','v','6');
1348  else if (rate == 25) tag = MKTAG('x','d','v','7');
1349  else if (rate == 30) tag = MKTAG('x','d','v','8');
1350  } else {
1351  if (rate == 25) tag = MKTAG('x','d','v','3');
1352  else if (rate == 30) tag = MKTAG('x','d','v','2');
1353  }
1354  } else if (track->par->width == 1920 && track->par->height == 1080) {
1355  if (!interlaced) {
1356  if (rate == 24) tag = MKTAG('x','d','v','d');
1357  else if (rate == 25) tag = MKTAG('x','d','v','e');
1358  else if (rate == 30) tag = MKTAG('x','d','v','f');
1359  } else {
1360  if (rate == 25) tag = MKTAG('x','d','v','c');
1361  else if (rate == 30) tag = MKTAG('x','d','v','b');
1362  }
1363  }
1364  } else if (track->par->format == AV_PIX_FMT_YUV422P) {
1365  if (track->par->width == 1280 && track->par->height == 720) {
1366  if (!interlaced) {
1367  if (rate == 24) tag = MKTAG('x','d','5','4');
1368  else if (rate == 25) tag = MKTAG('x','d','5','5');
1369  else if (rate == 30) tag = MKTAG('x','d','5','1');
1370  else if (rate == 50) tag = MKTAG('x','d','5','a');
1371  else if (rate == 60) tag = MKTAG('x','d','5','9');
1372  }
1373  } else if (track->par->width == 1920 && track->par->height == 1080) {
1374  if (!interlaced) {
1375  if (rate == 24) tag = MKTAG('x','d','5','d');
1376  else if (rate == 25) tag = MKTAG('x','d','5','e');
1377  else if (rate == 30) tag = MKTAG('x','d','5','f');
1378  } else {
1379  if (rate == 25) tag = MKTAG('x','d','5','c');
1380  else if (rate == 30) tag = MKTAG('x','d','5','b');
1381  }
1382  }
1383  }
1384 
1385  return tag;
1386 }
1387 
1389 {
1390  int tag = track->par->codec_tag;
1392  AVStream *st = track->st;
1393  int rate = defined_frame_rate(s, st);
1394 
1395  if (!tag)
1396  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1397 
1398  if (track->par->format == AV_PIX_FMT_YUV420P10) {
1399  if (track->par->width == 960 && track->par->height == 720) {
1400  if (!interlaced) {
1401  if (rate == 24) tag = MKTAG('a','i','5','p');
1402  else if (rate == 25) tag = MKTAG('a','i','5','q');
1403  else if (rate == 30) tag = MKTAG('a','i','5','p');
1404  else if (rate == 50) tag = MKTAG('a','i','5','q');
1405  else if (rate == 60) tag = MKTAG('a','i','5','p');
1406  }
1407  } else if (track->par->width == 1440 && track->par->height == 1080) {
1408  if (!interlaced) {
1409  if (rate == 24) tag = MKTAG('a','i','5','3');
1410  else if (rate == 25) tag = MKTAG('a','i','5','2');
1411  else if (rate == 30) tag = MKTAG('a','i','5','3');
1412  } else {
1413  if (rate == 50) tag = MKTAG('a','i','5','5');
1414  else if (rate == 60) tag = MKTAG('a','i','5','6');
1415  }
1416  }
1417  } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
1418  if (track->par->width == 1280 && track->par->height == 720) {
1419  if (!interlaced) {
1420  if (rate == 24) tag = MKTAG('a','i','1','p');
1421  else if (rate == 25) tag = MKTAG('a','i','1','q');
1422  else if (rate == 30) tag = MKTAG('a','i','1','p');
1423  else if (rate == 50) tag = MKTAG('a','i','1','q');
1424  else if (rate == 60) tag = MKTAG('a','i','1','p');
1425  }
1426  } else if (track->par->width == 1920 && track->par->height == 1080) {
1427  if (!interlaced) {
1428  if (rate == 24) tag = MKTAG('a','i','1','3');
1429  else if (rate == 25) tag = MKTAG('a','i','1','2');
1430  else if (rate == 30) tag = MKTAG('a','i','1','3');
1431  } else {
1432  if (rate == 25) tag = MKTAG('a','i','1','5');
1433  else if (rate == 50) tag = MKTAG('a','i','1','5');
1434  else if (rate == 60) tag = MKTAG('a','i','1','6');
1435  }
1436  } else if ( track->par->width == 4096 && track->par->height == 2160
1437  || track->par->width == 3840 && track->par->height == 2160
1438  || track->par->width == 2048 && track->par->height == 1080) {
1439  tag = MKTAG('a','i','v','x');
1440  }
1441  }
1442 
1443  return tag;
1444 }
1445 
1446 static const struct {
1448  uint32_t tag;
1449  unsigned bps;
1450 } mov_pix_fmt_tags[] = {
1451  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1452  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1453  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1454  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1455  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1456  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1457  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1458  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1459  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1460  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1461  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1462  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1463  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1464  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1465  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1466 };
1467 
1469 {
1470  int tag = MKTAG('A','V','d','n');
1471  if (track->par->profile != FF_PROFILE_UNKNOWN &&
1472  track->par->profile != FF_PROFILE_DNXHD)
1473  tag = MKTAG('A','V','d','h');
1474  return tag;
1475 }
1476 
1478 {
1479  int tag = track->par->codec_tag;
1480  int i;
1481  enum AVPixelFormat pix_fmt;
1482 
1483  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1484  if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
1485  tag = mov_pix_fmt_tags[i].tag;
1486  track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1487  if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
1488  break;
1489  }
1490  }
1491 
1493  track->par->bits_per_coded_sample);
1494  if (tag == MKTAG('r','a','w',' ') &&
1495  track->par->format != pix_fmt &&
1496  track->par->format != AV_PIX_FMT_GRAY8 &&
1497  track->par->format != AV_PIX_FMT_NONE)
1498  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1499  av_get_pix_fmt_name(track->par->format));
1500  return tag;
1501 }
1502 
1504 {
1505  int tag = track->par->codec_tag;
1506 
1507  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1508  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||
1509  track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||
1510  track->par->codec_id == AV_CODEC_ID_H263 ||
1511  track->par->codec_id == AV_CODEC_ID_H264 ||
1512  track->par->codec_id == AV_CODEC_ID_DNXHD ||
1513  track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1514  av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio
1515  if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)
1516  tag = mov_get_dv_codec_tag(s, track);
1517  else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)
1518  tag = mov_get_rawvideo_codec_tag(s, track);
1519  else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1520  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1521  else if (track->par->codec_id == AV_CODEC_ID_H264)
1522  tag = mov_get_h264_codec_tag(s, track);
1523  else if (track->par->codec_id == AV_CODEC_ID_DNXHD)
1524  tag = mov_get_dnxhd_codec_tag(s, track);
1525  else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
1527  if (!tag) { // if no mac fcc found, try with Microsoft tags
1529  if (tag)
1530  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1531  "the file may be unplayable!\n");
1532  }
1533  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
1535  if (!tag) { // if no mac fcc found, try with Microsoft tags
1536  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);
1537  if (ms_tag) {
1538  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1539  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1540  "the file may be unplayable!\n");
1541  }
1542  }
1543  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
1545  }
1546 
1547  return tag;
1548 }
1549 
1551 {
1552  int tag;
1553 
1554  if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
1555  tag = track->par->codec_tag;
1556  else if (track->mode == MODE_ISM)
1557  tag = track->par->codec_tag;
1558  else if (track->mode == MODE_IPOD) {
1559  if (!av_match_ext(s->filename, "m4a") &&
1560  !av_match_ext(s->filename, "m4v") &&
1561  !av_match_ext(s->filename, "m4b"))
1562  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
1563  "Quicktime/Ipod might not play the file\n");
1564  tag = track->par->codec_tag;
1565  } else if (track->mode & MODE_3GP)
1566  tag = track->par->codec_tag;
1567  else if (track->mode == MODE_F4V)
1568  tag = track->par->codec_tag;
1569  else
1570  tag = mov_get_codec_tag(s, track);
1571 
1572  return tag;
1573 }
1574 
1575 /** Write uuid atom.
1576  * Needed to make file play in iPods running newest firmware
1577  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1578  */
1580 {
1581  avio_wb32(pb, 28);
1582  ffio_wfourcc(pb, "uuid");
1583  avio_wb32(pb, 0x6b6840f2);
1584  avio_wb32(pb, 0x5f244fc5);
1585  avio_wb32(pb, 0xba39a51b);
1586  avio_wb32(pb, 0xcf0323f3);
1587  avio_wb32(pb, 0x0);
1588  return 28;
1589 }
1590 
1591 static const uint16_t fiel_data[] = {
1592  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1593 };
1594 
1595 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)
1596 {
1597  unsigned mov_field_order = 0;
1598  if (field_order < FF_ARRAY_ELEMS(fiel_data))
1599  mov_field_order = fiel_data[field_order];
1600  else
1601  return 0;
1602  avio_wb32(pb, 10);
1603  ffio_wfourcc(pb, "fiel");
1604  avio_wb16(pb, mov_field_order);
1605  return 10;
1606 }
1607 
1609 {
1610  int64_t pos = avio_tell(pb);
1611  avio_wb32(pb, 0); /* size */
1612  avio_wl32(pb, track->tag); // store it byteswapped
1613  avio_wb32(pb, 0); /* Reserved */
1614  avio_wb16(pb, 0); /* Reserved */
1615  avio_wb16(pb, 1); /* Data-reference index */
1616 
1617  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1618  mov_write_esds_tag(pb, track);
1619  else if (track->par->extradata_size)
1620  avio_write(pb, track->par->extradata, track->par->extradata_size);
1621 
1622  return update_size(pb, pos);
1623 }
1624 
1625 static int mov_write_st3d_tag(AVIOContext *pb, AVStereo3D *stereo_3d)
1626 {
1627  int8_t stereo_mode;
1628 
1629  if (stereo_3d->flags != 0) {
1630  av_log(pb, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);
1631  return 0;
1632  }
1633 
1634  switch (stereo_3d->type) {
1635  case AV_STEREO3D_2D:
1636  stereo_mode = 0;
1637  break;
1638  case AV_STEREO3D_TOPBOTTOM:
1639  stereo_mode = 1;
1640  break;
1642  stereo_mode = 2;
1643  break;
1644  default:
1645  av_log(pb, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));
1646  return 0;
1647  }
1648  avio_wb32(pb, 13); /* size */
1649  ffio_wfourcc(pb, "st3d");
1650  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1651  avio_w8(pb, stereo_mode);
1652  return 13;
1653 }
1654 
1656 {
1657  int64_t sv3d_pos, svhd_pos, proj_pos;
1658  const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;
1659 
1660  if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
1661  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
1662  spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {
1663  av_log(pb, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);
1664  return 0;
1665  }
1666 
1667  sv3d_pos = avio_tell(pb);
1668  avio_wb32(pb, 0); /* size */
1669  ffio_wfourcc(pb, "sv3d");
1670 
1671  svhd_pos = avio_tell(pb);
1672  avio_wb32(pb, 0); /* size */
1673  ffio_wfourcc(pb, "svhd");
1674  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1675  avio_put_str(pb, metadata_source);
1676  update_size(pb, svhd_pos);
1677 
1678  proj_pos = avio_tell(pb);
1679  avio_wb32(pb, 0); /* size */
1680  ffio_wfourcc(pb, "proj");
1681 
1682  avio_wb32(pb, 24); /* size */
1683  ffio_wfourcc(pb, "prhd");
1684  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1685  avio_wb32(pb, spherical_mapping->yaw);
1686  avio_wb32(pb, spherical_mapping->pitch);
1687  avio_wb32(pb, spherical_mapping->roll);
1688 
1689  switch (spherical_mapping->projection) {
1692  avio_wb32(pb, 28); /* size */
1693  ffio_wfourcc(pb, "equi");
1694  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1695  avio_wb32(pb, spherical_mapping->bound_top);
1696  avio_wb32(pb, spherical_mapping->bound_bottom);
1697  avio_wb32(pb, spherical_mapping->bound_left);
1698  avio_wb32(pb, spherical_mapping->bound_right);
1699  break;
1700  case AV_SPHERICAL_CUBEMAP:
1701  avio_wb32(pb, 20); /* size */
1702  ffio_wfourcc(pb, "cbmp");
1703  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1704  avio_wb32(pb, 0); /* layout */
1705  avio_wb32(pb, spherical_mapping->padding); /* padding */
1706  break;
1707  }
1708  update_size(pb, proj_pos);
1709 
1710  return update_size(pb, sv3d_pos);
1711 }
1712 
1713 static int mov_write_clap_tag(AVIOContext *pb, MOVTrack *track)
1714 {
1715  avio_wb32(pb, 40);
1716  ffio_wfourcc(pb, "clap");
1717  avio_wb32(pb, track->par->width); /* apertureWidth_N */
1718  avio_wb32(pb, 1); /* apertureWidth_D (= 1) */
1719  avio_wb32(pb, track->height); /* apertureHeight_N */
1720  avio_wb32(pb, 1); /* apertureHeight_D (= 1) */
1721  avio_wb32(pb, 0); /* horizOff_N (= 0) */
1722  avio_wb32(pb, 1); /* horizOff_D (= 1) */
1723  avio_wb32(pb, 0); /* vertOff_N (= 0) */
1724  avio_wb32(pb, 1); /* vertOff_D (= 1) */
1725  return 40;
1726 }
1727 
1728 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1729 {
1730  AVRational sar;
1731  av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,
1732  track->par->sample_aspect_ratio.den, INT_MAX);
1733 
1734  avio_wb32(pb, 16);
1735  ffio_wfourcc(pb, "pasp");
1736  avio_wb32(pb, sar.num);
1737  avio_wb32(pb, sar.den);
1738  return 16;
1739 }
1740 
1741 static int mov_write_gama_tag(AVIOContext *pb, MOVTrack *track, double gamma)
1742 {
1743  uint32_t gama = 0;
1744  if (gamma <= 0.0)
1745  {
1746  gamma = avpriv_get_gamma_from_trc(track->par->color_trc);
1747  }
1748  av_log(pb, AV_LOG_DEBUG, "gamma value %g\n", gamma);
1749 
1750  if (gamma > 1e-6) {
1751  gama = (uint32_t)lrint((double)(1<<16) * gamma);
1752  av_log(pb, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);
1753 
1754  av_assert0(track->mode == MODE_MOV);
1755  avio_wb32(pb, 12);
1756  ffio_wfourcc(pb, "gama");
1757  avio_wb32(pb, gama);
1758  return 12;
1759  }
1760  else {
1761  av_log(pb, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
1762  }
1763  return 0;
1764 }
1765 
1766 static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track)
1767 {
1768  // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
1769  // Ref (MP4): ISO/IEC 14496-12:2012
1770 
1771  if (track->par->color_primaries == AVCOL_PRI_UNSPECIFIED &&
1772  track->par->color_trc == AVCOL_TRC_UNSPECIFIED &&
1773  track->par->color_space == AVCOL_SPC_UNSPECIFIED) {
1774  if ((track->par->width >= 1920 && track->par->height >= 1080)
1775  || (track->par->width == 1280 && track->par->height == 720)) {
1776  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt709\n");
1778  } else if (track->par->width == 720 && track->height == 576) {
1779  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt470bg\n");
1781  } else if (track->par->width == 720 &&
1782  (track->height == 486 || track->height == 480)) {
1783  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming smpte170\n");
1785  } else {
1786  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, unable to assume anything\n");
1787  }
1788  switch (track->par->color_primaries) {
1789  case AVCOL_PRI_BT709:
1790  track->par->color_trc = AVCOL_TRC_BT709;
1791  track->par->color_space = AVCOL_SPC_BT709;
1792  break;
1793  case AVCOL_PRI_SMPTE170M:
1794  case AVCOL_PRI_BT470BG:
1795  track->par->color_trc = AVCOL_TRC_BT709;
1797  break;
1798  }
1799  }
1800 
1801  /* We should only ever be called by MOV or MP4. */
1802  av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4);
1803 
1804  avio_wb32(pb, 18 + (track->mode == MODE_MP4));
1805  ffio_wfourcc(pb, "colr");
1806  if (track->mode == MODE_MP4)
1807  ffio_wfourcc(pb, "nclx");
1808  else
1809  ffio_wfourcc(pb, "nclc");
1810  switch (track->par->color_primaries) {
1811  case AVCOL_PRI_BT709: avio_wb16(pb, 1); break;
1812  case AVCOL_PRI_BT470BG: avio_wb16(pb, 5); break;
1813  case AVCOL_PRI_SMPTE170M:
1814  case AVCOL_PRI_SMPTE240M: avio_wb16(pb, 6); break;
1815  case AVCOL_PRI_BT2020: avio_wb16(pb, 9); break;
1816  case AVCOL_PRI_SMPTE431: avio_wb16(pb, 11); break;
1817  case AVCOL_PRI_SMPTE432: avio_wb16(pb, 12); break;
1818  default: avio_wb16(pb, 2);
1819  }
1820  switch (track->par->color_trc) {
1821  case AVCOL_TRC_BT709: avio_wb16(pb, 1); break;
1822  case AVCOL_TRC_SMPTE170M: avio_wb16(pb, 1); break; // remapped
1823  case AVCOL_TRC_SMPTE240M: avio_wb16(pb, 7); break;
1824  case AVCOL_TRC_SMPTEST2084: avio_wb16(pb, 16); break;
1825  case AVCOL_TRC_SMPTE428: avio_wb16(pb, 17); break;
1826  case AVCOL_TRC_ARIB_STD_B67: avio_wb16(pb, 18); break;
1827  default: avio_wb16(pb, 2);
1828  }
1829  switch (track->par->color_space) {
1830  case AVCOL_SPC_BT709: avio_wb16(pb, 1); break;
1831  case AVCOL_SPC_BT470BG:
1832  case AVCOL_SPC_SMPTE170M: avio_wb16(pb, 6); break;
1833  case AVCOL_SPC_SMPTE240M: avio_wb16(pb, 7); break;
1834  case AVCOL_SPC_BT2020_NCL: avio_wb16(pb, 9); break;
1835  default: avio_wb16(pb, 2);
1836  }
1837 
1838  if (track->mode == MODE_MP4) {
1839  int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
1840  avio_w8(pb, full_range << 7);
1841  return 19;
1842  } else {
1843  return 18;
1844  }
1845 }
1846 
1847 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
1848 {
1849  AVDictionaryEntry *encoder;
1850  int xdcam_res = (track->par->width == 1280 && track->par->height == 720)
1851  || (track->par->width == 1440 && track->par->height == 1080)
1852  || (track->par->width == 1920 && track->par->height == 1080);
1853 
1854  if (track->mode == MODE_MOV &&
1855  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
1856  av_strlcpy(compressor_name, encoder->value, 32);
1857  } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
1859  AVStream *st = track->st;
1860  int rate = defined_frame_rate(NULL, st);
1861  av_strlcatf(compressor_name, len, "XDCAM");
1862  if (track->par->format == AV_PIX_FMT_YUV422P) {
1863  av_strlcatf(compressor_name, len, " HD422");
1864  } else if(track->par->width == 1440) {
1865  av_strlcatf(compressor_name, len, " HD");
1866  } else
1867  av_strlcatf(compressor_name, len, " EX");
1868 
1869  av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');
1870 
1871  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
1872  }
1873 }
1874 
1876 {
1877  int64_t pos = avio_tell(pb);
1878  char compressor_name[32] = { 0 };
1879  int avid = 0;
1880 
1881  int uncompressed_ycbcr = ((track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVY422)
1882  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_YUYV422)
1883  || track->par->codec_id == AV_CODEC_ID_V308
1884  || track->par->codec_id == AV_CODEC_ID_V408
1885  || track->par->codec_id == AV_CODEC_ID_V410
1886  || track->par->codec_id == AV_CODEC_ID_V210);
1887 
1888  avio_wb32(pb, 0); /* size */
1889  if (mov->encryption_scheme != MOV_ENC_NONE) {
1890  ffio_wfourcc(pb, "encv");
1891  } else {
1892  avio_wl32(pb, track->tag); // store it byteswapped
1893  }
1894  avio_wb32(pb, 0); /* Reserved */
1895  avio_wb16(pb, 0); /* Reserved */
1896  avio_wb16(pb, 1); /* Data-reference index */
1897 
1898  if (uncompressed_ycbcr) {
1899  avio_wb16(pb, 2); /* Codec stream version */
1900  } else {
1901  avio_wb16(pb, 0); /* Codec stream version */
1902  }
1903  avio_wb16(pb, 0); /* Codec stream revision (=0) */
1904  if (track->mode == MODE_MOV) {
1905  ffio_wfourcc(pb, "FFMP"); /* Vendor */
1906  if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO || uncompressed_ycbcr) {
1907  avio_wb32(pb, 0); /* Temporal Quality */
1908  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
1909  } else {
1910  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
1911  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
1912  }
1913  } else {
1914  avio_wb32(pb, 0); /* Reserved */
1915  avio_wb32(pb, 0); /* Reserved */
1916  avio_wb32(pb, 0); /* Reserved */
1917  }
1918  avio_wb16(pb, track->par->width); /* Video width */
1919  avio_wb16(pb, track->height); /* Video height */
1920  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
1921  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
1922  avio_wb32(pb, 0); /* Data size (= 0) */
1923  avio_wb16(pb, 1); /* Frame count (= 1) */
1924 
1925  /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
1926  find_compressor(compressor_name, 32, track);
1927  avio_w8(pb, strlen(compressor_name));
1928  avio_write(pb, compressor_name, 31);
1929 
1930  if (track->mode == MODE_MOV &&
1931  (track->par->codec_id == AV_CODEC_ID_V410 || track->par->codec_id == AV_CODEC_ID_V210))
1932  avio_wb16(pb, 0x18);
1933  else if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
1934  avio_wb16(pb, track->par->bits_per_coded_sample |
1935  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
1936  else
1937  avio_wb16(pb, 0x18); /* Reserved */
1938 
1939  if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
1940  int pal_size = 1 << track->par->bits_per_coded_sample;
1941  int i;
1942  avio_wb16(pb, 0); /* Color table ID */
1943  avio_wb32(pb, 0); /* Color table seed */
1944  avio_wb16(pb, 0x8000); /* Color table flags */
1945  avio_wb16(pb, pal_size - 1); /* Color table size (zero-relative) */
1946  for (i = 0; i < pal_size; i++) {
1947  uint32_t rgb = track->palette[i];
1948  uint16_t r = (rgb >> 16) & 0xff;
1949  uint16_t g = (rgb >> 8) & 0xff;
1950  uint16_t b = rgb & 0xff;
1951  avio_wb16(pb, 0);
1952  avio_wb16(pb, (r << 8) | r);
1953  avio_wb16(pb, (g << 8) | g);
1954  avio_wb16(pb, (b << 8) | b);
1955  }
1956  } else
1957  avio_wb16(pb, 0xffff); /* Reserved */
1958 
1959  if (track->tag == MKTAG('m','p','4','v'))
1960  mov_write_esds_tag(pb, track);
1961  else if (track->par->codec_id == AV_CODEC_ID_H263)
1962  mov_write_d263_tag(pb);
1963  else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
1964  track->par->codec_id == AV_CODEC_ID_SVQ3) {
1965  mov_write_extradata_tag(pb, track);
1966  avio_wb32(pb, 0);
1967  } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
1968  mov_write_avid_tag(pb, track);
1969  avid = 1;
1970  } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
1971  mov_write_hvcc_tag(pb, track);
1972  else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
1973  mov_write_avcc_tag(pb, track);
1974  if (track->mode == MODE_IPOD)
1976  } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
1977  mov_write_vpcc_tag(mov->fc, pb, track);
1978  } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
1979  mov_write_dvc1_tag(pb, track);
1980  else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
1981  track->par->codec_id == AV_CODEC_ID_VP6A) {
1982  /* Don't write any potential extradata here - the cropping
1983  * is signalled via the normal width/height fields. */
1984  } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
1985  if (track->par->codec_tag == MKTAG('R','1','0','k'))
1986  mov_write_dpxe_tag(pb, track);
1987  } else if (track->vos_len > 0)
1988  mov_write_glbl_tag(pb, track);
1989 
1990  if (track->par->codec_id != AV_CODEC_ID_H264 &&
1991  track->par->codec_id != AV_CODEC_ID_MPEG4 &&
1992  track->par->codec_id != AV_CODEC_ID_DNXHD) {
1993  int field_order = track->par->field_order;
1994 
1995 #if FF_API_LAVF_AVCTX
1997  if (field_order != track->st->codec->field_order && track->st->codec->field_order != AV_FIELD_UNKNOWN)
1998  field_order = track->st->codec->field_order;
2000 #endif
2001 
2002  if (field_order != AV_FIELD_UNKNOWN)
2003  mov_write_fiel_tag(pb, track, field_order);
2004  }
2005 
2006  if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
2007  if (track->mode == MODE_MOV)
2008  mov_write_gama_tag(pb, track, mov->gamma);
2009  else
2010  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
2011  }
2012  if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
2013  if (track->mode == MODE_MOV || track->mode == MODE_MP4)
2014  mov_write_colr_tag(pb, track);
2015  else
2016  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4.\n");
2017  }
2018 
2019  if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2022 
2023  if (stereo_3d)
2024  mov_write_st3d_tag(pb, stereo_3d);
2025  if (spherical_mapping)
2026  mov_write_sv3d_tag(mov->fc, pb, spherical_mapping);
2027  }
2028 
2029  if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
2030  mov_write_pasp_tag(pb, track);
2031  }
2032 
2033  if (uncompressed_ycbcr){
2034  mov_write_clap_tag(pb, track);
2035  }
2036 
2037  if (mov->encryption_scheme != MOV_ENC_NONE) {
2038  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
2039  }
2040 
2041  /* extra padding for avid stsd */
2042  /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
2043  if (avid)
2044  avio_wb32(pb, 0);
2045 
2046  return update_size(pb, pos);
2047 }
2048 
2049 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
2050 {
2051  int64_t pos = avio_tell(pb);
2052  avio_wb32(pb, 0); /* size */
2053  ffio_wfourcc(pb, "rtp ");
2054  avio_wb32(pb, 0); /* Reserved */
2055  avio_wb16(pb, 0); /* Reserved */
2056  avio_wb16(pb, 1); /* Data-reference index */
2057 
2058  avio_wb16(pb, 1); /* Hint track version */
2059  avio_wb16(pb, 1); /* Highest compatible version */
2060  avio_wb32(pb, track->max_packet_size); /* Max packet size */
2061 
2062  avio_wb32(pb, 12); /* size */
2063  ffio_wfourcc(pb, "tims");
2064  avio_wb32(pb, track->timescale);
2065 
2066  return update_size(pb, pos);
2067 }
2068 
2069 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
2070 {
2071  uint64_t str_size =strlen(reel_name);
2072  int64_t pos = avio_tell(pb);
2073 
2074  if (str_size >= UINT16_MAX){
2075  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
2076  avio_wb16(pb, 0);
2077  return AVERROR(EINVAL);
2078  }
2079 
2080  avio_wb32(pb, 0); /* size */
2081  ffio_wfourcc(pb, "name"); /* Data format */
2082  avio_wb16(pb, str_size); /* string size */
2083  avio_wb16(pb, track->language); /* langcode */
2084  avio_write(pb, reel_name, str_size); /* reel name */
2085  return update_size(pb,pos);
2086 }
2087 
2088 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
2089 {
2090  int64_t pos = avio_tell(pb);
2091 #if 1
2092  int frame_duration;
2093  int nb_frames;
2094  AVDictionaryEntry *t = NULL;
2095 
2096  if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {
2097 #if FF_API_LAVF_AVCTX
2099  frame_duration = av_rescale(track->timescale, track->st->codec->time_base.num, track->st->codec->time_base.den);
2100  nb_frames = ROUNDED_DIV(track->st->codec->time_base.den, track->st->codec->time_base.num);
2102 #else
2103  av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");
2104  return AVERROR(EINVAL);
2105 #endif
2106  } else {
2107  frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);
2108  nb_frames = ROUNDED_DIV(track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);
2109  }
2110 
2111  if (nb_frames > 255) {
2112  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
2113  return AVERROR(EINVAL);
2114  }
2115 
2116  avio_wb32(pb, 0); /* size */
2117  ffio_wfourcc(pb, "tmcd"); /* Data format */
2118  avio_wb32(pb, 0); /* Reserved */
2119  avio_wb32(pb, 1); /* Data reference index */
2120  avio_wb32(pb, 0); /* Flags */
2121  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
2122  avio_wb32(pb, track->timescale); /* Timescale */
2123  avio_wb32(pb, frame_duration); /* Frame duration */
2124  avio_w8(pb, nb_frames); /* Number of frames */
2125  avio_w8(pb, 0); /* Reserved */
2126 
2127  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
2128  if (t && utf8len(t->value) && track->mode != MODE_MP4)
2129  mov_write_source_reference_tag(pb, track, t->value);
2130  else
2131  avio_wb16(pb, 0); /* zero size */
2132 #else
2133 
2134  avio_wb32(pb, 0); /* size */
2135  ffio_wfourcc(pb, "tmcd"); /* Data format */
2136  avio_wb32(pb, 0); /* Reserved */
2137  avio_wb32(pb, 1); /* Data reference index */
2138  if (track->par->extradata_size)
2139  avio_write(pb, track->par->extradata, track->par->extradata_size);
2140 #endif
2141  return update_size(pb, pos);
2142 }
2143 
2144 static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)
2145 {
2146  int64_t pos = avio_tell(pb);
2147  avio_wb32(pb, 0); /* size */
2148  ffio_wfourcc(pb, "gpmd");
2149  avio_wb32(pb, 0); /* Reserved */
2150  avio_wb16(pb, 0); /* Reserved */
2151  avio_wb16(pb, 1); /* Data-reference index */
2152  avio_wb32(pb, 0); /* Reserved */
2153  return update_size(pb, pos);
2154 }
2155 
2157 {
2158  int64_t pos = avio_tell(pb);
2159  avio_wb32(pb, 0); /* size */
2160  ffio_wfourcc(pb, "stsd");
2161  avio_wb32(pb, 0); /* version & flags */
2162  avio_wb32(pb, 1); /* entry count */
2163  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2164  mov_write_video_tag(pb, mov, track);
2165  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2166  mov_write_audio_tag(s, pb, mov, track);
2167  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
2168  mov_write_subtitle_tag(pb, track);
2169  else if (track->par->codec_tag == MKTAG('r','t','p',' '))
2170  mov_write_rtp_tag(pb, track);
2171  else if (track->par->codec_tag == MKTAG('t','m','c','d'))
2172  mov_write_tmcd_tag(pb, track);
2173  else if (track->par->codec_tag == MKTAG('g','p','m','d'))
2174  mov_write_gpmd_tag(pb, track);
2175  return update_size(pb, pos);
2176 }
2177 
2179 {
2180  MOVMuxContext *mov = s->priv_data;
2181  MOVStts *ctts_entries;
2182  uint32_t entries = 0;
2183  uint32_t atom_size;
2184  int i;
2185 
2186  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
2187  if (!ctts_entries)
2188  return AVERROR(ENOMEM);
2189  ctts_entries[0].count = 1;
2190  ctts_entries[0].duration = track->cluster[0].cts;
2191  for (i = 1; i < track->entry; i++) {
2192  if (track->cluster[i].cts == ctts_entries[entries].duration) {
2193  ctts_entries[entries].count++; /* compress */
2194  } else {
2195  entries++;
2196  ctts_entries[entries].duration = track->cluster[i].cts;
2197  ctts_entries[entries].count = 1;
2198  }
2199  }
2200  entries++; /* last one */
2201  atom_size = 16 + (entries * 8);
2202  avio_wb32(pb, atom_size); /* size */
2203  ffio_wfourcc(pb, "ctts");
2205  avio_w8(pb, 1); /* version */
2206  else
2207  avio_w8(pb, 0); /* version */
2208  avio_wb24(pb, 0); /* flags */
2209  avio_wb32(pb, entries); /* entry count */
2210  for (i = 0; i < entries; i++) {
2211  avio_wb32(pb, ctts_entries[i].count);
2212  avio_wb32(pb, ctts_entries[i].duration);
2213  }
2214  av_free(ctts_entries);
2215  return atom_size;
2216 }
2217 
2218 /* Time to sample atom */
2219 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
2220 {
2221  MOVStts *stts_entries = NULL;
2222  uint32_t entries = -1;
2223  uint32_t atom_size;
2224  int i;
2225 
2226  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
2227  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
2228  if (!stts_entries)
2229  return AVERROR(ENOMEM);
2230  stts_entries[0].count = track->sample_count;
2231  stts_entries[0].duration = 1;
2232  entries = 1;
2233  } else {
2234  if (track->entry) {
2235  stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */
2236  if (!stts_entries)
2237  return AVERROR(ENOMEM);
2238  }
2239  for (i = 0; i < track->entry; i++) {
2240  int duration = get_cluster_duration(track, i);
2241  if (i && duration == stts_entries[entries].duration) {
2242  stts_entries[entries].count++; /* compress */
2243  } else {
2244  entries++;
2245  stts_entries[entries].duration = duration;
2246  stts_entries[entries].count = 1;
2247  }
2248  }
2249  entries++; /* last one */
2250  }
2251  atom_size = 16 + (entries * 8);
2252  avio_wb32(pb, atom_size); /* size */
2253  ffio_wfourcc(pb, "stts");
2254  avio_wb32(pb, 0); /* version & flags */
2255  avio_wb32(pb, entries); /* entry count */
2256  for (i = 0; i < entries; i++) {
2257  avio_wb32(pb, stts_entries[i].count);
2258  avio_wb32(pb, stts_entries[i].duration);
2259  }
2260  av_free(stts_entries);
2261  return atom_size;
2262 }
2263 
2265 {
2266  avio_wb32(pb, 28); /* size */
2267  ffio_wfourcc(pb, "dref");
2268  avio_wb32(pb, 0); /* version & flags */
2269  avio_wb32(pb, 1); /* entry count */
2270 
2271  avio_wb32(pb, 0xc); /* size */
2272  //FIXME add the alis and rsrc atom
2273  ffio_wfourcc(pb, "url ");
2274  avio_wb32(pb, 1); /* version & flags */
2275 
2276  return 28;
2277 }
2278 
2280 {
2281  struct sgpd_entry {
2282  int count;
2283  int16_t roll_distance;
2284  int group_description_index;
2285  };
2286 
2287  struct sgpd_entry *sgpd_entries = NULL;
2288  int entries = -1;
2289  int group = 0;
2290  int i, j;
2291 
2292  const int OPUS_SEEK_PREROLL_MS = 80;
2293  int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,
2294  (AVRational){1, 1000},
2295  (AVRational){1, 48000});
2296 
2297  if (!track->entry)
2298  return 0;
2299 
2300  sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));
2301  if (!sgpd_entries)
2302  return AVERROR(ENOMEM);
2303 
2305 
2306  if (track->par->codec_id == AV_CODEC_ID_OPUS) {
2307  for (i = 0; i < track->entry; i++) {
2308  int roll_samples_remaining = roll_samples;
2309  int distance = 0;
2310  for (j = i - 1; j >= 0; j--) {
2311  roll_samples_remaining -= get_cluster_duration(track, j);
2312  distance++;
2313  if (roll_samples_remaining <= 0)
2314  break;
2315  }
2316  /* We don't have enough preceeding samples to compute a valid
2317  roll_distance here, so this sample can't be independently
2318  decoded. */
2319  if (roll_samples_remaining > 0)
2320  distance = 0;
2321  /* Verify distance is a minimum of 2 (60ms) packets and a maximum of
2322  32 (2.5ms) packets. */
2323  av_assert0(distance == 0 || (distance >= 2 && distance <= 32));
2324  if (i && distance == sgpd_entries[entries].roll_distance) {
2325  sgpd_entries[entries].count++;
2326  } else {
2327  entries++;
2328  sgpd_entries[entries].count = 1;
2329  sgpd_entries[entries].roll_distance = distance;
2330  sgpd_entries[entries].group_description_index = distance ? ++group : 0;
2331  }
2332  }
2333  } else {
2334  entries++;
2335  sgpd_entries[entries].count = track->sample_count;
2336  sgpd_entries[entries].roll_distance = 1;
2337  sgpd_entries[entries].group_description_index = ++group;
2338  }
2339  entries++;
2340 
2341  if (!group) {
2342  av_free(sgpd_entries);
2343  return 0;
2344  }
2345 
2346  /* Write sgpd tag */
2347  avio_wb32(pb, 24 + (group * 2)); /* size */
2348  ffio_wfourcc(pb, "sgpd");
2349  avio_wb32(pb, 1 << 24); /* fullbox */
2350  ffio_wfourcc(pb, "roll");
2351  avio_wb32(pb, 2); /* default_length */
2352  avio_wb32(pb, group); /* entry_count */
2353  for (i = 0; i < entries; i++) {
2354  if (sgpd_entries[i].group_description_index) {
2355  avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */
2356  }
2357  }
2358 
2359  /* Write sbgp tag */
2360  avio_wb32(pb, 20 + (entries * 8)); /* size */
2361  ffio_wfourcc(pb, "sbgp");
2362  avio_wb32(pb, 0); /* fullbox */
2363  ffio_wfourcc(pb, "roll");
2364  avio_wb32(pb, entries); /* entry_count */
2365  for (i = 0; i < entries; i++) {
2366  avio_wb32(pb, sgpd_entries[i].count); /* sample_count */
2367  avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */
2368  }
2369 
2370  av_free(sgpd_entries);
2371  return 0;
2372 }
2373 
2375 {
2376  int64_t pos = avio_tell(pb);
2377  int ret;
2378 
2379  avio_wb32(pb, 0); /* size */
2380  ffio_wfourcc(pb, "stbl");
2381  mov_write_stsd_tag(s, pb, mov, track);
2382  mov_write_stts_tag(pb, track);
2383  if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2384  track->par->codec_tag == MKTAG('r','t','p',' ')) &&
2385  track->has_keyframes && track->has_keyframes < track->entry)
2386  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
2387  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && track->has_disposable)
2388  mov_write_sdtp_tag(pb, track);
2389  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
2391  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
2392  track->flags & MOV_TRACK_CTTS && track->entry) {
2393 
2394  if ((ret = mov_write_ctts_tag(s, pb, track)) < 0)
2395  return ret;
2396  }
2397  mov_write_stsc_tag(pb, track);
2398  mov_write_stsz_tag(pb, track);
2399  mov_write_stco_tag(pb, track);
2400  if (track->cenc.aes_ctr) {
2401  ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);
2402  }
2403  if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {
2404  mov_preroll_write_stbl_atoms(pb, track);
2405  }
2406  return update_size(pb, pos);
2407 }
2408 
2410 {
2411  int64_t pos = avio_tell(pb);
2412  avio_wb32(pb, 0); /* size */
2413  ffio_wfourcc(pb, "dinf");
2414  mov_write_dref_tag(pb);
2415  return update_size(pb, pos);
2416 }
2417 
2419 {
2420  avio_wb32(pb, 12);
2421  ffio_wfourcc(pb, "nmhd");
2422  avio_wb32(pb, 0);
2423  return 12;
2424 }
2425 
2426 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
2427 {
2428  int64_t pos = avio_tell(pb);
2429  const char *font = "Lucida Grande";
2430  avio_wb32(pb, 0); /* size */
2431  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
2432  avio_wb32(pb, 0); /* version & flags */
2433  avio_wb16(pb, 0); /* text font */
2434  avio_wb16(pb, 0); /* text face */
2435  avio_wb16(pb, 12); /* text size */
2436  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
2437  avio_wb16(pb, 0x0000); /* text color (red) */
2438  avio_wb16(pb, 0x0000); /* text color (green) */
2439  avio_wb16(pb, 0x0000); /* text color (blue) */
2440  avio_wb16(pb, 0xffff); /* background color (red) */
2441  avio_wb16(pb, 0xffff); /* background color (green) */
2442  avio_wb16(pb, 0xffff); /* background color (blue) */
2443  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
2444  avio_write(pb, font, strlen(font)); /* font name */
2445  return update_size(pb, pos);
2446 }
2447 
2448 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
2449 {
2450  int64_t pos = avio_tell(pb);
2451  avio_wb32(pb, 0); /* size */
2452  ffio_wfourcc(pb, "gmhd");
2453  avio_wb32(pb, 0x18); /* gmin size */
2454  ffio_wfourcc(pb, "gmin");/* generic media info */
2455  avio_wb32(pb, 0); /* version & flags */
2456  avio_wb16(pb, 0x40); /* graphics mode = */
2457  avio_wb16(pb, 0x8000); /* opColor (r?) */
2458  avio_wb16(pb, 0x8000); /* opColor (g?) */
2459  avio_wb16(pb, 0x8000); /* opColor (b?) */
2460  avio_wb16(pb, 0); /* balance */
2461  avio_wb16(pb, 0); /* reserved */
2462 
2463  /*
2464  * This special text atom is required for
2465  * Apple Quicktime chapters. The contents
2466  * don't appear to be documented, so the
2467  * bytes are copied verbatim.
2468  */
2469  if (track->tag != MKTAG('c','6','0','8')) {
2470  avio_wb32(pb, 0x2C); /* size */
2471  ffio_wfourcc(pb, "text");
2472  avio_wb16(pb, 0x01);
2473  avio_wb32(pb, 0x00);
2474  avio_wb32(pb, 0x00);
2475  avio_wb32(pb, 0x00);
2476  avio_wb32(pb, 0x01);
2477  avio_wb32(pb, 0x00);
2478  avio_wb32(pb, 0x00);
2479  avio_wb32(pb, 0x00);
2480  avio_wb32(pb, 0x00004000);
2481  avio_wb16(pb, 0x0000);
2482  }
2483 
2484  if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2485  int64_t tmcd_pos = avio_tell(pb);
2486  avio_wb32(pb, 0); /* size */
2487  ffio_wfourcc(pb, "tmcd");
2488  mov_write_tcmi_tag(pb, track);
2489  update_size(pb, tmcd_pos);
2490  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2491  int64_t gpmd_pos = avio_tell(pb);
2492  avio_wb32(pb, 0); /* size */
2493  ffio_wfourcc(pb, "gpmd");
2494  avio_wb32(pb, 0); /* version */
2495  update_size(pb, gpmd_pos);
2496  }
2497  return update_size(pb, pos);
2498 }
2499 
2501 {
2502  avio_wb32(pb, 16); /* size */
2503  ffio_wfourcc(pb, "smhd");
2504  avio_wb32(pb, 0); /* version & flags */
2505  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
2506  avio_wb16(pb, 0); /* reserved */
2507  return 16;
2508 }
2509 
2511 {
2512  avio_wb32(pb, 0x14); /* size (always 0x14) */
2513  ffio_wfourcc(pb, "vmhd");
2514  avio_wb32(pb, 0x01); /* version & flags */
2515  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
2516  return 0x14;
2517 }
2518 
2519 static int is_clcp_track(MOVTrack *track)
2520 {
2521  return track->tag == MKTAG('c','7','0','8') ||
2522  track->tag == MKTAG('c','6','0','8');
2523 }
2524 
2526 {
2527  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
2528  int64_t pos = avio_tell(pb);
2529 
2530  hdlr = "dhlr";
2531  hdlr_type = "url ";
2532  descr = "DataHandler";
2533 
2534  if (track) {
2535  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
2536  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
2537  hdlr_type = "vide";
2538  descr = "VideoHandler";
2539  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
2540  hdlr_type = "soun";
2541  descr = "SoundHandler";
2542  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2543  if (is_clcp_track(track)) {
2544  hdlr_type = "clcp";
2545  descr = "ClosedCaptionHandler";
2546  } else {
2547  if (track->tag == MKTAG('t','x','3','g')) {
2548  hdlr_type = "sbtl";
2549  } else if (track->tag == MKTAG('m','p','4','s')) {
2550  hdlr_type = "subp";
2551  } else {
2552  hdlr_type = "text";
2553  }
2554  descr = "SubtitleHandler";
2555  }
2556  } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
2557  hdlr_type = "hint";
2558  descr = "HintHandler";
2559  } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2560  hdlr_type = "tmcd";
2561  descr = "TimeCodeHandler";
2562  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2563  hdlr_type = "meta";
2564  descr = "GoPro MET"; // GoPro Metadata
2565  } else {
2567  "Unknown hldr_type for %s, writing dummy values\n",
2568  av_fourcc2str(track->par->codec_tag));
2569  }
2570  if (track->st) {
2571  // hdlr.name is used by some players to identify the content title
2572  // of the track. So if an alternate handler description is
2573  // specified, use it.
2574  AVDictionaryEntry *t;
2575  t = av_dict_get(track->st->metadata, "handler", NULL, 0);
2576  if (t && utf8len(t->value))
2577  descr = t->value;
2578  }
2579  }
2580 
2581  avio_wb32(pb, 0); /* size */
2582  ffio_wfourcc(pb, "hdlr");
2583  avio_wb32(pb, 0); /* Version & flags */
2584  avio_write(pb, hdlr, 4); /* handler */
2585  ffio_wfourcc(pb, hdlr_type); /* handler type */
2586  avio_wb32(pb, 0); /* reserved */
2587  avio_wb32(pb, 0); /* reserved */
2588  avio_wb32(pb, 0); /* reserved */
2589  if (!track || track->mode == MODE_MOV)
2590  avio_w8(pb, strlen(descr)); /* pascal string */
2591  avio_write(pb, descr, strlen(descr)); /* handler description */
2592  if (track && track->mode != MODE_MOV)
2593  avio_w8(pb, 0); /* c string */
2594  return update_size(pb, pos);
2595 }
2596 
2598 {
2599  /* This atom must be present, but leaving the values at zero
2600  * seems harmless. */
2601  avio_wb32(pb, 28); /* size */
2602  ffio_wfourcc(pb, "hmhd");
2603  avio_wb32(pb, 0); /* version, flags */
2604  avio_wb16(pb, 0); /* maxPDUsize */
2605  avio_wb16(pb, 0); /* avgPDUsize */
2606  avio_wb32(pb, 0); /* maxbitrate */
2607  avio_wb32(pb, 0); /* avgbitrate */
2608  avio_wb32(pb, 0); /* reserved */
2609  return 28;
2610 }
2611 
2613 {
2614  int64_t pos = avio_tell(pb);
2615  int ret;
2616 
2617  avio_wb32(pb, 0); /* size */
2618  ffio_wfourcc(pb, "minf");
2619  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2620  mov_write_vmhd_tag(pb);
2621  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2622  mov_write_smhd_tag(pb);
2623  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2624  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
2625  mov_write_gmhd_tag(pb, track);
2626  } else {
2627  mov_write_nmhd_tag(pb);
2628  }
2629  } else if (track->tag == MKTAG('r','t','p',' ')) {
2630  mov_write_hmhd_tag(pb);
2631  } else if (track->tag == MKTAG('t','m','c','d')) {
2632  if (track->mode != MODE_MOV)
2633  mov_write_nmhd_tag(pb);
2634  else
2635  mov_write_gmhd_tag(pb, track);
2636  } else if (track->tag == MKTAG('g','p','m','d')) {
2637  mov_write_gmhd_tag(pb, track);
2638  }
2639  if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
2640  mov_write_hdlr_tag(s, pb, NULL);
2641  mov_write_dinf_tag(pb);
2642  if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
2643  return ret;
2644  return update_size(pb, pos);
2645 }
2646 
2648  MOVTrack *track)
2649 {
2650  int version = track->track_duration < INT32_MAX ? 0 : 1;
2651 
2652  if (track->mode == MODE_ISM)
2653  version = 1;
2654 
2655  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
2656  ffio_wfourcc(pb, "mdhd");
2657  avio_w8(pb, version);
2658  avio_wb24(pb, 0); /* flags */
2659  if (version == 1) {
2660  avio_wb64(pb, track->time);
2661  avio_wb64(pb, track->time);
2662  } else {
2663  avio_wb32(pb, track->time); /* creation time */
2664  avio_wb32(pb, track->time); /* modification time */
2665  }
2666  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
2667  if (!track->entry && mov->mode == MODE_ISM)
2668  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2669  else if (!track->entry)
2670  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2671  else
2672  (version == 1) ? avio_wb64(pb, track->track_duration) : avio_wb32(pb, track->track_duration); /* duration */
2673  avio_wb16(pb, track->language); /* language */
2674  avio_wb16(pb, 0); /* reserved (quality) */
2675 
2676  if (version != 0 && track->mode == MODE_MOV) {
2678  "FATAL error, file duration too long for timebase, this file will not be\n"
2679  "playable with quicktime. Choose a different timebase or a different\n"
2680  "container format\n");
2681  }
2682 
2683  return 32;
2684 }
2685 
2687  MOVMuxContext *mov, MOVTrack *track)
2688 {
2689  int64_t pos = avio_tell(pb);
2690  int ret;
2691 
2692  avio_wb32(pb, 0); /* size */
2693  ffio_wfourcc(pb, "mdia");
2694  mov_write_mdhd_tag(pb, mov, track);
2695  mov_write_hdlr_tag(s, pb, track);
2696  if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)
2697  return ret;
2698  return update_size(pb, pos);
2699 }
2700 
2701 /* transformation matrix
2702  |a b u|
2703  |c d v|
2704  |tx ty w| */
2705 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
2706  int16_t d, int16_t tx, int16_t ty)
2707 {
2708  avio_wb32(pb, a << 16); /* 16.16 format */
2709  avio_wb32(pb, b << 16); /* 16.16 format */
2710  avio_wb32(pb, 0); /* u in 2.30 format */
2711  avio_wb32(pb, c << 16); /* 16.16 format */
2712  avio_wb32(pb, d << 16); /* 16.16 format */
2713  avio_wb32(pb, 0); /* v in 2.30 format */
2714  avio_wb32(pb, tx << 16); /* 16.16 format */
2715  avio_wb32(pb, ty << 16); /* 16.16 format */
2716  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
2717 }
2718 
2720  MOVTrack *track, AVStream *st)
2721 {
2723  track->timescale, AV_ROUND_UP);
2724  int version = duration < INT32_MAX ? 0 : 1;
2726  int rotation = 0;
2727  int group = 0;
2728 
2729  uint32_t *display_matrix = NULL;
2730  int display_matrix_size, i;
2731 
2732  if (st) {
2733  if (mov->per_stream_grouping)
2734  group = st->index;
2735  else
2736  group = st->codecpar->codec_type;
2737 
2738  display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
2739  &display_matrix_size);
2740  if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
2741  display_matrix = NULL;
2742  }
2743 
2744  if (track->flags & MOV_TRACK_ENABLED)
2745  flags |= MOV_TKHD_FLAG_ENABLED;
2746 
2747  if (track->mode == MODE_ISM)
2748  version = 1;
2749 
2750  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
2751  ffio_wfourcc(pb, "tkhd");
2752  avio_w8(pb, version);
2753  avio_wb24(pb, flags);
2754  if (version == 1) {
2755  avio_wb64(pb, track->time);
2756  avio_wb64(pb, track->time);
2757  } else {
2758  avio_wb32(pb, track->time); /* creation time */
2759  avio_wb32(pb, track->time); /* modification time */
2760  }
2761  avio_wb32(pb, track->track_id); /* track-id */
2762  avio_wb32(pb, 0); /* reserved */
2763  if (!track->entry && mov->mode == MODE_ISM)
2764  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2765  else if (!track->entry)
2766  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2767  else
2768  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
2769 
2770  avio_wb32(pb, 0); /* reserved */
2771  avio_wb32(pb, 0); /* reserved */
2772  avio_wb16(pb, 0); /* layer */
2773  avio_wb16(pb, group); /* alternate group) */
2774  /* Volume, only for audio */
2775  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2776  avio_wb16(pb, 0x0100);
2777  else
2778  avio_wb16(pb, 0);
2779  avio_wb16(pb, 0); /* reserved */
2780 
2781  /* Matrix structure */
2782 #if FF_API_OLD_ROTATE_API
2783  if (st && st->metadata) {
2784  AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
2785  rotation = (rot && rot->value) ? atoi(rot->value) : 0;
2786  }
2787 #endif
2788  if (display_matrix) {
2789  for (i = 0; i < 9; i++)
2790  avio_wb32(pb, display_matrix[i]);
2791 #if FF_API_OLD_ROTATE_API
2792  } else if (rotation == 90) {
2793  write_matrix(pb, 0, 1, -1, 0, track->par->height, 0);
2794  } else if (rotation == 180) {
2795  write_matrix(pb, -1, 0, 0, -1, track->par->width, track->par->height);
2796  } else if (rotation == 270) {
2797  write_matrix(pb, 0, -1, 1, 0, 0, track->par->width);
2798 #endif
2799  } else {
2800  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2801  }
2802  /* Track width and height, for visual only */
2803  if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2804  track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
2805  int64_t track_width_1616;
2806  if (track->mode == MODE_MOV) {
2807  track_width_1616 = track->par->width * 0x10000ULL;
2808  } else {
2809  track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
2810  track->par->width * 0x10000LL,
2811  st->sample_aspect_ratio.den);
2812  if (!track_width_1616 ||
2813  track->height != track->par->height ||
2814  track_width_1616 > UINT32_MAX)
2815  track_width_1616 = track->par->width * 0x10000ULL;
2816  }
2817  if (track_width_1616 > UINT32_MAX) {
2818  av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
2819  track_width_1616 = 0;
2820  }
2821  avio_wb32(pb, track_width_1616);
2822  if (track->height > 0xFFFF) {
2823  av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
2824  avio_wb32(pb, 0);
2825  } else
2826  avio_wb32(pb, track->height * 0x10000U);
2827  } else {
2828  avio_wb32(pb, 0);
2829  avio_wb32(pb, 0);
2830  }
2831  return 0x5c;
2832 }
2833 
2834 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
2835 {
2837  track->par->sample_aspect_ratio.den);
2838 
2839  int64_t pos = avio_tell(pb);
2840 
2841  avio_wb32(pb, 0); /* size */
2842  ffio_wfourcc(pb, "tapt");
2843 
2844  avio_wb32(pb, 20);
2845  ffio_wfourcc(pb, "clef");
2846  avio_wb32(pb, 0);
2847  avio_wb32(pb, width << 16);
2848  avio_wb32(pb, track->par->height << 16);
2849 
2850  avio_wb32(pb, 20);
2851  ffio_wfourcc(pb, "prof");
2852  avio_wb32(pb, 0);
2853  avio_wb32(pb, width << 16);
2854  avio_wb32(pb, track->par->height << 16);
2855 
2856  avio_wb32(pb, 20);
2857  ffio_wfourcc(pb, "enof");
2858  avio_wb32(pb, 0);
2859  avio_wb32(pb, track->par->width << 16);
2860  avio_wb32(pb, track->par->height << 16);
2861 
2862  return update_size(pb, pos);
2863 }
2864 
2865 // This box seems important for the psp playback ... without it the movie seems to hang
2867  MOVTrack *track)
2868 {
2870  track->timescale, AV_ROUND_UP);
2871  int version = duration < INT32_MAX ? 0 : 1;
2872  int entry_size, entry_count, size;
2873  int64_t delay, start_ct = track->start_cts;
2874  int64_t start_dts = track->start_dts;
2875 
2876  if (track->entry) {
2877  if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {
2878 
2879  av_log(mov->fc, AV_LOG_DEBUG,
2880  "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",
2881  track->cluster[0].dts, track->cluster[0].cts,
2882  start_dts, start_ct, track->track_id);
2883  start_dts = track->cluster[0].dts;
2884  start_ct = track->cluster[0].cts;
2885  }
2886  }
2887 
2888  delay = av_rescale_rnd(start_dts + start_ct, MOV_TIMESCALE,
2889  track->timescale, AV_ROUND_DOWN);
2890  version |= delay < INT32_MAX ? 0 : 1;
2891 
2892  entry_size = (version == 1) ? 20 : 12;
2893  entry_count = 1 + (delay > 0);
2894  size = 24 + entry_count * entry_size;
2895 
2896  /* write the atom data */
2897  avio_wb32(pb, size);
2898  ffio_wfourcc(pb, "edts");
2899  avio_wb32(pb, size - 8);
2900  ffio_wfourcc(pb, "elst");
2901  avio_w8(pb, version);
2902  avio_wb24(pb, 0); /* flags */
2903 
2904  avio_wb32(pb, entry_count);
2905  if (delay > 0) { /* add an empty edit to delay presentation */
2906  /* In the positive delay case, the delay includes the cts
2907  * offset, and the second edit list entry below trims out
2908  * the same amount from the actual content. This makes sure
2909  * that the offset last sample is included in the edit
2910  * list duration as well. */
2911  if (version == 1) {
2912  avio_wb64(pb, delay);
2913  avio_wb64(pb, -1);
2914  } else {
2915  avio_wb32(pb, delay);
2916  avio_wb32(pb, -1);
2917  }
2918  avio_wb32(pb, 0x00010000);
2919  } else {
2920  /* Avoid accidentally ending up with start_ct = -1 which has got a
2921  * special meaning. Normally start_ct should end up positive or zero
2922  * here, but use FFMIN in case dts is a small positive integer
2923  * rounded to 0 when represented in MOV_TIMESCALE units. */
2924  av_assert0(av_rescale_rnd(start_dts, MOV_TIMESCALE, track->timescale, AV_ROUND_DOWN) <= 0);
2925  start_ct = -FFMIN(start_dts, 0);
2926  /* Note, this delay is calculated from the pts of the first sample,
2927  * ensuring that we don't reduce the duration for cases with
2928  * dts<0 pts=0. */
2929  duration += delay;
2930  }
2931 
2932  /* For fragmented files, we don't know the full length yet. Setting
2933  * duration to 0 allows us to only specify the offset, including
2934  * the rest of the content (from all future fragments) without specifying
2935  * an explicit duration. */
2936  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
2937  duration = 0;
2938 
2939  /* duration */
2940  if (version == 1) {
2941  avio_wb64(pb, duration);
2942  avio_wb64(pb, start_ct);
2943  } else {
2944  avio_wb32(pb, duration);
2945  avio_wb32(pb, start_ct);
2946  }
2947  avio_wb32(pb, 0x00010000);
2948  return size;
2949 }
2950 
2951 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
2952 {
2953  avio_wb32(pb, 20); // size
2954  ffio_wfourcc(pb, "tref");
2955  avio_wb32(pb, 12); // size (subatom)
2956  avio_wl32(pb, track->tref_tag);
2957  avio_wb32(pb, track->tref_id);
2958  return 20;
2959 }
2960 
2961 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
2963 {
2964  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
2965  ffio_wfourcc(pb, "uuid");
2966  ffio_wfourcc(pb, "USMT");
2967  avio_wb32(pb, 0x21d24fce);
2968  avio_wb32(pb, 0xbb88695c);
2969  avio_wb32(pb, 0xfac9c740);
2970  avio_wb32(pb, 0x1c); // another size here!
2971  ffio_wfourcc(pb, "MTDT");
2972  avio_wb32(pb, 0x00010012);
2973  avio_wb32(pb, 0x0a);
2974  avio_wb32(pb, 0x55c40000);
2975  avio_wb32(pb, 0x1);
2976  avio_wb32(pb, 0x0);
2977  return 0x34;
2978 }
2979 
2980 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
2981 {
2982  AVFormatContext *ctx = track->rtp_ctx;
2983  char buf[1000] = "";
2984  int len;
2985 
2986  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
2987  NULL, NULL, 0, 0, ctx);
2988  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
2989  len = strlen(buf);
2990 
2991  avio_wb32(pb, len + 24);
2992  ffio_wfourcc(pb, "udta");
2993  avio_wb32(pb, len + 16);
2994  ffio_wfourcc(pb, "hnti");
2995  avio_wb32(pb, len + 8);
2996  ffio_wfourcc(pb, "sdp ");
2997  avio_write(pb, buf, len);
2998  return len + 24;
2999 }
3000 
3002  const char *tag, const char *str)
3003 {
3004  int64_t pos = avio_tell(pb);
3005  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
3006  if (!t || !utf8len(t->value))
3007  return 0;
3008 
3009  avio_wb32(pb, 0); /* size */
3010  ffio_wfourcc(pb, tag); /* type */
3011  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
3012  return update_size(pb, pos);
3013 }
3014 
3016  AVStream *st)
3017 {
3018  AVIOContext *pb_buf;
3019  int ret, size;
3020  uint8_t *buf;
3021 
3022  if (!st)
3023  return 0;
3024 
3025  ret = avio_open_dyn_buf(&pb_buf);
3026  if (ret < 0)
3027  return ret;
3028 
3029  if (mov->mode & MODE_MP4)
3030  mov_write_track_metadata(pb_buf, st, "name", "title");
3031 
3032  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
3033  avio_wb32(pb, size + 8);
3034  ffio_wfourcc(pb, "udta");
3035  avio_write(pb, buf, size);
3036  }
3037  av_free(buf);
3038 
3039  return 0;
3040 }
3041 
3043  MOVTrack *track, AVStream *st)
3044 {
3045  int64_t pos = avio_tell(pb);
3046  int entry_backup = track->entry;
3047  int chunk_backup = track->chunkCount;
3048  int ret;
3049 
3050  /* If we want to have an empty moov, but some samples already have been
3051  * buffered (delay_moov), pretend that no samples have been written yet. */
3052  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
3053  track->chunkCount = track->entry = 0;
3054 
3055  avio_wb32(pb, 0); /* size */
3056  ffio_wfourcc(pb, "trak");
3057  mov_write_tkhd_tag(pb, mov, track, st);
3058 
3059  av_assert2(mov->use_editlist >= 0);
3060 
3061  if (track->start_dts != AV_NOPTS_VALUE) {
3062  if (mov->use_editlist)
3063  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
3064  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
3065  av_log(mov->fc, AV_LOG_WARNING,
3066  "Not writing any edit list even though one would have been required\n");
3067  }
3068 
3069  if (track->tref_tag)
3070  mov_write_tref_tag(pb, track);
3071 
3072  if ((ret = mov_write_mdia_tag(s, pb, mov, track)) < 0)
3073  return ret;
3074  if (track->mode == MODE_PSP)
3075  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
3076  if (track->tag == MKTAG('r','t','p',' '))
3077  mov_write_udta_sdp(pb, track);
3078  if (track->mode == MODE_MOV) {
3079  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3080  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
3081  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
3082  mov_write_tapt_tag(pb, track);
3083  }
3084  }
3085  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
3086  mov_write_tapt_tag(pb, track);
3087  }
3088  }
3089  mov_write_track_udta_tag(pb, mov, st);
3090  track->entry = entry_backup;
3091  track->chunkCount = chunk_backup;
3092  return update_size(pb, pos);
3093 }
3094 
3096 {
3097  int i, has_audio = 0, has_video = 0;
3098  int64_t pos = avio_tell(pb);
3099  int audio_profile = mov->iods_audio_profile;
3100  int video_profile = mov->iods_video_profile;
3101  for (i = 0; i < mov->nb_streams; i++) {
3102  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3103  has_audio |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_AUDIO;
3104  has_video |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_VIDEO;
3105  }
3106  }
3107  if (audio_profile < 0)
3108  audio_profile = 0xFF - has_audio;
3109  if (video_profile < 0)
3110  video_profile = 0xFF - has_video;
3111  avio_wb32(pb, 0x0); /* size */
3112  ffio_wfourcc(pb, "iods");
3113  avio_wb32(pb, 0); /* version & flags */
3114  put_descr(pb, 0x10, 7);
3115  avio_wb16(pb, 0x004f);
3116  avio_w8(pb, 0xff);
3117  avio_w8(pb, 0xff);
3118  avio_w8(pb, audio_profile);
3119  avio_w8(pb, video_profile);
3120  avio_w8(pb, 0xff);
3121  return update_size(pb, pos);
3122 }
3123 
3124 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
3125 {
3126  avio_wb32(pb, 0x20); /* size */
3127  ffio_wfourcc(pb, "trex");
3128  avio_wb32(pb, 0); /* version & flags */
3129  avio_wb32(pb, track->track_id); /* track ID */
3130  avio_wb32(pb, 1); /* default sample description index */
3131  avio_wb32(pb, 0); /* default sample duration */
3132  avio_wb32(pb, 0); /* default sample size */
3133  avio_wb32(pb, 0); /* default sample flags */
3134  return 0;
3135 }
3136 
3138 {
3139  int64_t pos = avio_tell(pb);
3140  int i;
3141  avio_wb32(pb, 0x0); /* size */
3142  ffio_wfourcc(pb, "mvex");
3143  for (i = 0; i < mov->nb_streams; i++)
3144  mov_write_trex_tag(pb, &mov->tracks[i]);
3145  return update_size(pb, pos);
3146 }
3147 
3149 {
3150  int max_track_id = 1, i;
3151  int64_t max_track_len = 0;
3152  int version;
3153 
3154  for (i = 0; i < mov->nb_streams; i++) {
3155  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
3156  int64_t max_track_len_temp = av_rescale_rnd(mov->tracks[i].track_duration,
3157  MOV_TIMESCALE,
3158  mov->tracks[i].timescale,
3159  AV_ROUND_UP);
3160  if (max_track_len < max_track_len_temp)
3161  max_track_len = max_track_len_temp;
3162  if (max_track_id < mov->tracks[i].track_id)
3163  max_track_id = mov->tracks[i].track_id;
3164  }
3165  }
3166  /* If using delay_moov, make sure the output is the same as if no
3167  * samples had been written yet. */
3168  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3169  max_track_len = 0;
3170  max_track_id = 1;
3171  }
3172 
3173  version = max_track_len < UINT32_MAX ? 0 : 1;
3174  avio_wb32(pb, version == 1 ? 120 : 108); /* size */
3175 
3176  ffio_wfourcc(pb, "mvhd");
3177  avio_w8(pb, version);
3178  avio_wb24(pb, 0); /* flags */
3179  if (version == 1) {
3180  avio_wb64(pb, mov->time);
3181  avio_wb64(pb, mov->time);
3182  } else {
3183  avio_wb32(pb, mov->time); /* creation time */
3184  avio_wb32(pb, mov->time); /* modification time */
3185  }
3186  avio_wb32(pb, MOV_TIMESCALE);
3187  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
3188 
3189  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
3190  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
3191  avio_wb16(pb, 0); /* reserved */
3192  avio_wb32(pb, 0); /* reserved */
3193  avio_wb32(pb, 0); /* reserved */
3194 
3195  /* Matrix structure */
3196  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3197 
3198  avio_wb32(pb, 0); /* reserved (preview time) */
3199  avio_wb32(pb, 0); /* reserved (preview duration) */
3200  avio_wb32(pb, 0); /* reserved (poster time) */
3201  avio_wb32(pb, 0); /* reserved (selection time) */
3202  avio_wb32(pb, 0); /* reserved (selection duration) */
3203  avio_wb32(pb, 0); /* reserved (current time) */
3204  avio_wb32(pb, max_track_id + 1); /* Next track id */
3205  return 0x6c;
3206 }
3207 
3209  AVFormatContext *s)
3210 {
3211  avio_wb32(pb, 33); /* size */
3212  ffio_wfourcc(pb, "hdlr");
3213  avio_wb32(pb, 0);
3214  avio_wb32(pb, 0);
3215  ffio_wfourcc(pb, "mdir");
3216  ffio_wfourcc(pb, "appl");
3217  avio_wb32(pb, 0);
3218  avio_wb32(pb, 0);
3219  avio_w8(pb, 0);
3220  return 33;
3221 }
3222 
3223 /* helper function to write a data tag with the specified string as data */
3224 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
3225 {
3226  if (long_style) {
3227  int size = 16 + strlen(data);
3228  avio_wb32(pb, size); /* size */
3229  ffio_wfourcc(pb, "data");
3230  avio_wb32(pb, 1);
3231  avio_wb32(pb, 0);
3232  avio_write(pb, data, strlen(data));
3233  return size;
3234  } else {
3235  if (!lang)
3236  lang = ff_mov_iso639_to_lang("und", 1);
3237  avio_wb16(pb, strlen(data)); /* string length */
3238  avio_wb16(pb, lang);
3239  avio_write(pb, data, strlen(data));
3240  return strlen(data) + 4;
3241  }
3242 }
3243 
3244 static int mov_write_string_tag(AVIOContext *pb, const char *name,
3245  const char *value, int lang, int long_style)
3246 {
3247  int size = 0;
3248  if (value && value[0]) {
3249  int64_t pos = avio_tell(pb);
3250  avio_wb32(pb, 0); /* size */
3251  ffio_wfourcc(pb, name);
3252  mov_write_string_data_tag(pb, value, lang, long_style);
3253  size = update_size(pb, pos);
3254  }
3255  return size;
3256 }
3257 
3259  const char *tag, int *lang)
3260 {
3261  int l, len, len2;
3262  AVDictionaryEntry *t, *t2 = NULL;
3263  char tag2[16];
3264 
3265  *lang = 0;
3266 
3267  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3268  return NULL;
3269 
3270  len = strlen(t->key);
3271  snprintf(tag2, sizeof(tag2), "%s-", tag);
3272  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
3273  len2 = strlen(t2->key);
3274  if (len2 == len + 4 && !strcmp(t->value, t2->value)
3275  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
3276  *lang = l;
3277  return t;
3278  }
3279  }
3280  return t;
3281 }
3282 
3284  const char *name, const char *tag,
3285  int long_style)
3286 {
3287  int lang;
3288  AVDictionaryEntry *t = get_metadata_lang(s, tag, &lang);
3289  if (!t)
3290  return 0;
3291  return mov_write_string_tag(pb, name, t->value, lang, long_style);
3292 }
3293 
3294 /* iTunes bpm number */
3296 {
3297  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
3298  int size = 0, tmpo = t ? atoi(t->value) : 0;
3299  if (tmpo) {
3300  size = 26;
3301  avio_wb32(pb, size);
3302  ffio_wfourcc(pb, "tmpo");
3303  avio_wb32(pb, size-8); /* size */
3304  ffio_wfourcc(pb, "data");
3305  avio_wb32(pb, 0x15); //type specifier
3306  avio_wb32(pb, 0);
3307  avio_wb16(pb, tmpo); // data
3308  }
3309  return size;
3310 }
3311 
3312 /* 3GPP TS 26.244 */
3314 {
3315  int lang;
3316  int64_t pos = avio_tell(pb);
3317  double latitude, longitude, altitude;
3318  int32_t latitude_fix, longitude_fix, altitude_fix;
3319  AVDictionaryEntry *t = get_metadata_lang(s, "location", &lang);
3320  const char *ptr, *place = "";
3321  char *end;
3322  static const char *astronomical_body = "earth";
3323  if (!t)
3324  return 0;
3325 
3326  ptr = t->value;
3327  longitude = strtod(ptr, &end);
3328  if (end == ptr) {
3329  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3330  return 0;
3331  }
3332  ptr = end;
3333  latitude = strtod(ptr, &end);
3334  if (end == ptr) {
3335  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3336  return 0;
3337  }
3338  ptr = end;
3339  altitude = strtod(ptr, &end);
3340  /* If no altitude was present, the default 0 should be fine */
3341  if (*end == '/')
3342  place = end + 1;
3343 
3344  latitude_fix = (int32_t) ((1 << 16) * latitude);
3345  longitude_fix = (int32_t) ((1 << 16) * longitude);
3346  altitude_fix = (int32_t) ((1 << 16) * altitude);
3347 
3348  avio_wb32(pb, 0); /* size */
3349  ffio_wfourcc(pb, "loci"); /* type */
3350  avio_wb32(pb, 0); /* version + flags */
3351  avio_wb16(pb, lang);
3352  avio_write(pb, place, strlen(place) + 1);
3353  avio_w8(pb, 0); /* role of place (0 == shooting location, 1 == real location, 2 == fictional location) */
3354  avio_wb32(pb, latitude_fix);
3355  avio_wb32(pb, longitude_fix);
3356  avio_wb32(pb, altitude_fix);
3357  avio_write(pb, astronomical_body, strlen(astronomical_body) + 1);
3358  avio_w8(pb, 0); /* additional notes, null terminated string */
3359 
3360  return update_size(pb, pos);
3361 }
3362 
3363 /* iTunes track or disc number */
3365  AVFormatContext *s, int disc)
3366 {
3368  disc ? "disc" : "track",
3369  NULL, 0);
3370  int size = 0, track = t ? atoi(t->value) : 0;
3371  if (track) {
3372  int tracks = 0;
3373  char *slash = strchr(t->value, '/');
3374  if (slash)
3375  tracks = atoi(slash + 1);
3376  avio_wb32(pb, 32); /* size */
3377  ffio_wfourcc(pb, disc ? "disk" : "trkn");
3378  avio_wb32(pb, 24); /* size */
3379  ffio_wfourcc(pb, "data");
3380  avio_wb32(pb, 0); // 8 bytes empty
3381  avio_wb32(pb, 0);
3382  avio_wb16(pb, 0); // empty
3383  avio_wb16(pb, track); // track / disc number
3384  avio_wb16(pb, tracks); // total track / disc number
3385  avio_wb16(pb, 0); // empty
3386  size = 32;
3387  }
3388  return size;
3389 }
3390 
3392  const char *name, const char *tag,
3393  int len)
3394 {
3395  AVDictionaryEntry *t = NULL;
3396  uint8_t num;
3397  int size = 24 + len;
3398 
3399  if (len != 1 && len != 4)
3400  return -1;
3401 
3402  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3403  return 0;
3404  num = atoi(t->value);
3405 
3406  avio_wb32(pb, size);
3407  ffio_wfourcc(pb, name);
3408  avio_wb32(pb, size - 8);
3409  ffio_wfourcc(pb, "data");
3410  avio_wb32(pb, 0x15);
3411  avio_wb32(pb, 0);
3412  if (len==4) avio_wb32(pb, num);
3413  else avio_w8 (pb, num);
3414 
3415  return size;
3416 }
3417 
3418 /* iTunes meta data list */
3420  AVFormatContext *s)
3421 {
3422  int64_t pos = avio_tell(pb);
3423  avio_wb32(pb, 0); /* size */
3424  ffio_wfourcc(pb, "ilst");
3425  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
3426  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
3427  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
3428  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
3429  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
3430  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
3431  if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {
3432  if (!(s->flags & AVFMT_FLAG_BITEXACT))
3433  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
3434  }
3435  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
3436  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
3437  mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
3438  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
3439  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
3440  mov_write_string_metadata(s, pb, "desc", "description",1);
3441  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
3442  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
3443  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
3444  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
3445  mov_write_string_metadata(s, pb, "keyw", "keywords" , 1);
3446  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
3447  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
3448  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
3449  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
3450  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
3451  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
3452  mov_write_trkn_tag(pb, mov, s, 0); // track number
3453  mov_write_trkn_tag(pb, mov, s, 1); // disc number
3454  mov_write_tmpo_tag(pb, s);
3455  return update_size(pb, pos);
3456 }
3457 
3459  AVFormatContext *s)
3460 {
3461  avio_wb32(pb, 33); /* size */
3462  ffio_wfourcc(pb, "hdlr");
3463  avio_wb32(pb, 0);
3464  avio_wb32(pb, 0);
3465  ffio_wfourcc(pb, "mdta");
3466  avio_wb32(pb, 0);
3467  avio_wb32(pb, 0);
3468  avio_wb32(pb, 0);
3469  avio_w8(pb, 0);
3470  return 33;
3471 }
3472 
3474  AVFormatContext *s)
3475 {
3476  AVDictionaryEntry *t = NULL;
3477  int64_t pos = avio_tell(pb);
3478  int64_t curpos, entry_pos;
3479  int count = 0;
3480 
3481  avio_wb32(pb, 0); /* size */
3482  ffio_wfourcc(pb, "keys");
3483  avio_wb32(pb, 0);
3484  entry_pos = avio_tell(pb);
3485  avio_wb32(pb, 0); /* entry count */
3486 
3487  while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {
3488  avio_wb32(pb, strlen(t->key) + 8);
3489  ffio_wfourcc(pb, "mdta");
3490  avio_write(pb, t->key, strlen(t->key));
3491  count += 1;
3492  }
3493  curpos = avio_tell(pb);
3494  avio_seek(pb, entry_pos, SEEK_SET);
3495  avio_wb32(pb, count); // rewrite entry count
3496  avio_seek(pb, curpos, SEEK_SET);
3497 
3498  return update_size(pb, pos);
3499 }
3500 
3502  AVFormatContext *s)
3503 {
3504  AVDictionaryEntry *t = NULL;
3505  int64_t pos = avio_tell(pb);
3506  int count = 1; /* keys are 1-index based */
3507 
3508  avio_wb32(pb, 0); /* size */
3509  ffio_wfourcc(pb, "ilst");
3510 
3511  while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {
3512  int64_t entry_pos = avio_tell(pb);
3513  avio_wb32(pb, 0); /* size */
3514  avio_wb32(pb, count); /* key */
3515  mov_write_string_data_tag(pb, t->value, 0, 1);
3516  update_size(pb, entry_pos);
3517  count += 1;
3518  }
3519  return update_size(pb, pos);
3520 }
3521 
3522 /* meta data tags */
3524  AVFormatContext *s)
3525 {
3526  int size = 0;
3527  int64_t pos = avio_tell(pb);
3528  avio_wb32(pb, 0); /* size */
3529  ffio_wfourcc(pb, "meta");
3530  avio_wb32(pb, 0);
3531  if (mov->flags & FF_MOV_FLAG_USE_MDTA) {
3532  mov_write_mdta_hdlr_tag(pb, mov, s);
3533  mov_write_mdta_keys_tag(pb, mov, s);
3534  mov_write_mdta_ilst_tag(pb, mov, s);
3535  }
3536  else {
3537  /* iTunes metadata tag */
3538  mov_write_itunes_hdlr_tag(pb, mov, s);
3539  mov_write_ilst_tag(pb, mov, s);
3540  }
3541  size = update_size(pb, pos);
3542  return size;
3543 }
3544 
3546  const char *name, const char *key)
3547 {
3548  int len;
3549  AVDictionaryEntry *t;
3550 
3551  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
3552  return 0;
3553 
3554  len = strlen(t->value);
3555  if (len > 0) {
3556  int size = len + 8;
3557  avio_wb32(pb, size);
3558  ffio_wfourcc(pb, name);
3559  avio_write(pb, t->value, len);
3560  return size;
3561  }
3562  return 0;
3563 }
3564 
3565 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
3566 {
3567  int val;
3568  while (*b) {
3569  GET_UTF8(val, *b++, return -1;)
3570  avio_wb16(pb, val);
3571  }
3572  avio_wb16(pb, 0x00);
3573  return 0;
3574 }
3575 
3576 static uint16_t language_code(const char *str)
3577 {
3578  return (((str[0] - 0x60) & 0x1F) << 10) +
3579  (((str[1] - 0x60) & 0x1F) << 5) +
3580  (( str[2] - 0x60) & 0x1F);
3581 }
3582 
3584  const char *tag, const char *str)
3585 {
3586  int64_t pos = avio_tell(pb);
3587  AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
3588  if (!t || !utf8len(t->value))
3589  return 0;
3590  avio_wb32(pb, 0); /* size */
3591  ffio_wfourcc(pb, tag); /* type */
3592  avio_wb32(pb, 0); /* version + flags */
3593  if (!strcmp(tag, "yrrc"))
3594  avio_wb16(pb, atoi(t->value));
3595  else {
3596  avio_wb16(pb, language_code("eng")); /* language */
3597  avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
3598  if (!strcmp(tag, "albm") &&
3599  (t = av_dict_get(s->metadata, "track", NULL, 0)))
3600  avio_w8(pb, atoi(t->value));
3601  }
3602  return update_size(pb, pos);
3603 }
3604 
3606 {
3607  int64_t pos = avio_tell(pb);
3608  int i, nb_chapters = FFMIN(s->nb_chapters, 255);
3609 
3610  avio_wb32(pb, 0); // size
3611  ffio_wfourcc(pb, "chpl");
3612  avio_wb32(pb, 0x01000000); // version + flags
3613  avio_wb32(pb, 0); // unknown
3614  avio_w8(pb, nb_chapters);
3615 
3616  for (i = 0; i < nb_chapters; i++) {
3617  AVChapter *c = s->chapters[i];
3618  AVDictionaryEntry *t;
3619  avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
3620 
3621  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
3622  int len = FFMIN(strlen(t->value), 255);
3623  avio_w8(pb, len);
3624  avio_write(pb, t->value, len);
3625  } else
3626  avio_w8(pb, 0);
3627  }
3628  return update_size(pb, pos);
3629 }
3630 
3632  AVFormatContext *s)
3633 {
3634  AVIOContext *pb_buf;
3635  int ret, size;
3636  uint8_t *buf;
3637 
3638  ret = avio_open_dyn_buf(&pb_buf);
3639  if (ret < 0)
3640  return ret;
3641 
3642  if (mov->mode & MODE_3GP) {
3643  mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
3644  mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
3645  mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
3646  mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
3647  mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
3648  mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
3649  mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
3650  mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
3651  mov_write_loci_tag(s, pb_buf);
3652  } else if (mov->mode == MODE_MOV && !(mov->flags & FF_MOV_FLAG_USE_MDTA)) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
3653  mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
3654  mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
3655  mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
3656  mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
3657  mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
3658  mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
3659  // currently ignored by mov.c
3660  mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
3661  // add support for libquicktime, this atom is also actually read by mov.c
3662  mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
3663  mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
3664  mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
3665  mov_write_string_metadata(s, pb_buf, "\251mak", "make", 0);
3666  mov_write_string_metadata(s, pb_buf, "\251mod", "model", 0);
3667  mov_write_string_metadata(s, pb_buf, "\251xyz", "location", 0);
3668  mov_write_string_metadata(s, pb_buf, "\251key", "keywords", 0);
3669  mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
3670  } else {
3671  /* iTunes meta data */
3672  mov_write_meta_tag(pb_buf, mov, s);
3673  mov_write_loci_tag(s, pb_buf);
3674  }
3675 
3676  if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
3677  mov_write_chpl_tag(pb_buf, s);
3678 
3679  if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
3680  avio_wb32(pb, size + 8);
3681  ffio_wfourcc(pb, "udta");
3682  avio_write(pb, buf, size);
3683  }
3684  av_free(buf);
3685 
3686  return 0;
3687 }
3688 
3690  const char *str, const char *lang, int type)
3691 {
3692  int len = utf8len(str) + 1;
3693  if (len <= 0)
3694  return;
3695  avio_wb16(pb, len * 2 + 10); /* size */
3696  avio_wb32(pb, type); /* type */
3697  avio_wb16(pb, language_code(lang)); /* language */
3698  avio_wb16(pb, 0x01); /* ? */
3699  ascii_to_wc(pb, str);
3700 }
3701 
3703 {
3704  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
3705  int64_t pos, pos2;
3706 
3707  if (title) {
3708  pos = avio_tell(pb);
3709  avio_wb32(pb, 0); /* size placeholder*/
3710  ffio_wfourcc(pb, "uuid");
3711  ffio_wfourcc(pb, "USMT");
3712  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
3713  avio_wb32(pb, 0xbb88695c);
3714  avio_wb32(pb, 0xfac9c740);
3715 
3716  pos2 = avio_tell(pb);
3717  avio_wb32(pb, 0); /* size placeholder*/
3718  ffio_wfourcc(pb, "MTDT");
3719  avio_wb16(pb, 4);
3720 
3721  // ?
3722  avio_wb16(pb, 0x0C); /* size */
3723  avio_wb32(pb, 0x0B); /* type */
3724  avio_wb16(pb, language_code("und")); /* language */
3725  avio_wb16(pb, 0x0); /* ? */
3726  avio_wb16(pb, 0x021C); /* data */
3727 
3728  if (!(s->flags & AVFMT_FLAG_BITEXACT))
3729  mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
3730  mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
3731  mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
3732 
3733  update_size(pb, pos2);
3734  return update_size(pb, pos);
3735  }
3736 
3737  return 0;
3738 }
3739 
3740 static void build_chunks(MOVTrack *trk)
3741 {
3742  int i;
3743  MOVIentry *chunk = &trk->cluster[0];
3744  uint64_t chunkSize = chunk->size;
3745  chunk->chunkNum = 1;
3746  if (trk->chunkCount)
3747  return;
3748  trk->chunkCount = 1;
3749  for (i = 1; i<trk->entry; i++){
3750  if (chunk->pos + chunkSize == trk->cluster[i].pos &&
3751  chunkSize + trk->cluster[i].size < (1<<20)){
3752  chunkSize += trk->cluster[i].size;
3753  chunk->samples_in_chunk += trk->cluster[i].entries;
3754  } else {
3755  trk->cluster[i].chunkNum = chunk->chunkNum+1;
3756  chunk=&trk->cluster[i];
3757  chunkSize = chunk->size;
3758  trk->chunkCount++;
3759  }
3760  }
3761 }
3762 
3763 /**
3764  * Assign track ids. If option "use_stream_ids_as_track_ids" is set,
3765  * the stream ids are used as track ids.
3766  *
3767  * This assumes mov->tracks and s->streams are in the same order and
3768  * there are no gaps in either of them (so mov->tracks[n] refers to
3769  * s->streams[n]).
3770  *
3771  * As an exception, there can be more entries in
3772  * s->streams than in mov->tracks, in which case new track ids are
3773  * generated (starting after the largest found stream id).
3774  */
3776 {
3777  int i;
3778 
3779  if (mov->track_ids_ok)
3780  return 0;
3781 
3782  if (mov->use_stream_ids_as_track_ids) {
3783  int next_generated_track_id = 0;
3784  for (i = 0; i < s->nb_streams; i++) {
3785  if (s->streams[i]->id > next_generated_track_id)
3786  next_generated_track_id = s->streams[i]->id;
3787  }
3788 
3789  for (i = 0; i < mov->nb_streams; i++) {
3790  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3791  continue;
3792 
3793  mov->tracks[i].track_id = i >= s->nb_streams ? ++next_generated_track_id : s->streams[i]->id;
3794  }
3795  } else {
3796  for (i = 0; i < mov->nb_streams; i++) {
3797  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3798  continue;
3799 
3800  mov->tracks[i].track_id = i + 1;
3801  }
3802  }
3803 
3804  mov->track_ids_ok = 1;
3805 
3806  return 0;
3807 }
3808 
3810  AVFormatContext *s)
3811 {
3812  int i;
3813  int64_t pos = avio_tell(pb);
3814  avio_wb32(pb, 0); /* size placeholder*/
3815  ffio_wfourcc(pb, "moov");
3816 
3817  mov_setup_track_ids(mov, s);
3818 
3819  for (i = 0; i < mov->nb_streams; i++) {
3820  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3821  continue;
3822 
3823  mov->tracks[i].time = mov->time;
3824 
3825  if (mov->tracks[i].entry)
3826  build_chunks(&mov->tracks[i]);
3827  }
3828 
3829  if (mov->chapter_track)
3830  for (i = 0; i < s->nb_streams; i++) {
3831  mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
3832  mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
3833  }
3834  for (i = 0; i < mov->nb_streams; i++) {
3835  MOVTrack *track = &mov->tracks[i];
3836  if (track->tag == MKTAG('r','t','p',' ')) {
3837  track->tref_tag = MKTAG('h','i','n','t');
3838  track->tref_id = mov->tracks[track->src_track].track_id;
3839  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
3840  int * fallback, size;
3841  fallback = (int*)av_stream_get_side_data(track->st,
3843  &size);
3844  if (fallback != NULL && size == sizeof(int)) {
3845  if (*fallback >= 0 && *fallback < mov->nb_streams) {
3846  track->tref_tag = MKTAG('f','a','l','l');
3847  track->tref_id = mov->tracks[*fallback].track_id;
3848  }
3849  }
3850  }
3851  }
3852  for (i = 0; i < mov->nb_streams; i++) {
3853  if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
3854  int src_trk = mov->tracks[i].src_track;
3855  mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
3856  mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
3857  //src_trk may have a different timescale than the tmcd track
3858  mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
3859  mov->tracks[i].timescale,
3860  mov->tracks[src_trk].timescale);
3861  }
3862  }
3863 
3864  mov_write_mvhd_tag(pb, mov);
3865  if (mov->mode != MODE_MOV && !mov->iods_skip)
3866  mov_write_iods_tag(pb, mov);
3867  for (i = 0; i < mov->nb_streams; i++) {
3868  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
3869  int ret = mov_write_trak_tag(s, pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
3870  if (ret < 0)
3871  return ret;
3872  }
3873  }
3874  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
3875  mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
3876 
3877  if (mov->mode == MODE_PSP)
3878  mov_write_uuidusmt_tag(pb, s);
3879  else
3880  mov_write_udta_tag(pb, mov, s);
3881 
3882  return update_size(pb, pos);
3883 }
3884 
3885 static void param_write_int(AVIOContext *pb, const char *name, int value)
3886 {
3887  avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
3888 }
3889 
3890 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
3891 {
3892  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
3893 }
3894 
3895 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
3896 {
3897  char buf[150];
3898  len = FFMIN(sizeof(buf) / 2 - 1, len);
3899  ff_data_to_hex(buf, value, len, 0);
3900  buf[2 * len] = '\0';
3901  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
3902 }
3903 
3905 {
3906  int64_t pos = avio_tell(pb);
3907  int i;
3908  int64_t manifest_bit_rate = 0;
3909  AVCPBProperties *props = NULL;
3910 
3911  static const uint8_t uuid[] = {
3912  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
3913  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
3914  };
3915 
3916  avio_wb32(pb, 0);
3917  ffio_wfourcc(pb, "uuid");
3918  avio_write(pb, uuid, sizeof(uuid));
3919  avio_wb32(pb, 0);
3920 
3921  avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
3922  avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
3923  avio_printf(pb, "<head>\n");
3924  if (!(mov->fc->flags & AVFMT_FLAG_BITEXACT))
3925  avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
3927  avio_printf(pb, "</head>\n");
3928  avio_printf(pb, "<body>\n");
3929  avio_printf(pb, "<switch>\n");
3930 
3931  mov_setup_track_ids(mov, s);
3932 
3933  for (i = 0; i < mov->nb_streams; i++) {
3934  MOVTrack *track = &mov->tracks[i];
3935  const char *type;
3936  int track_id = track->track_id;
3937  char track_name_buf[32] = { 0 };
3938 
3939  AVStream *st = track->st;
3940  AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
3941 
3942  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3943  type = "video";
3944  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
3945  type = "audio";
3946  } else {
3947  continue;
3948  }
3949 
3951 
3952  if (track->par->bit_rate) {
3953  manifest_bit_rate = track->par->bit_rate;
3954  } else if (props) {
3955  manifest_bit_rate = props->max_bitrate;
3956  }
3957 
3958  avio_printf(pb, "<%s systemBitrate=\"%"PRId64"\">\n", type,
3959  manifest_bit_rate);
3960  param_write_int(pb, "systemBitrate", manifest_bit_rate);
3961  param_write_int(pb, "trackID", track_id);
3962  param_write_string(pb, "systemLanguage", lang ? lang->value : "und");
3963 
3964  /* Build track name piece by piece: */
3965  /* 1. track type */
3966  av_strlcat(track_name_buf, type, sizeof(track_name_buf));
3967  /* 2. track language, if available */
3968  if (lang)
3969  av_strlcatf(track_name_buf, sizeof(track_name_buf),
3970  "_%s", lang->value);
3971  /* 3. special type suffix */
3972  /* "_cc" = closed captions, "_ad" = audio_description */
3974  av_strlcat(track_name_buf, "_cc", sizeof(track_name_buf));
3976  av_strlcat(track_name_buf, "_ad", sizeof(track_name_buf));
3977 
3978  param_write_string(pb, "trackName", track_name_buf);
3979 
3980  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3981  if (track->par->codec_id == AV_CODEC_ID_H264) {
3982  uint8_t *ptr;
3983  int size = track->par->extradata_size;
3984  if (!ff_avc_write_annexb_extradata(track->par->extradata, &ptr,
3985  &size)) {
3986  param_write_hex(pb, "CodecPrivateData",
3987  ptr ? ptr : track->par->extradata,
3988  size);
3989  av_free(ptr);
3990  }
3991  param_write_string(pb, "FourCC", "H264");
3992  } else if (track->par->codec_id == AV_CODEC_ID_VC1) {
3993  param_write_string(pb, "FourCC", "WVC1");
3994  param_write_hex(pb, "CodecPrivateData", track->par->extradata,
3995  track->par->extradata_size);
3996  }
3997  param_write_int(pb, "MaxWidth", track->par->width);
3998  param_write_int(pb, "MaxHeight", track->par->height);
3999  param_write_int(pb, "DisplayWidth", track->par->width);
4000  param_write_int(pb, "DisplayHeight", track->par->height);
4001  } else {
4002  if (track->par->codec_id == AV_CODEC_ID_AAC) {
4003  switch (track->par->profile)
4004  {
4005  case FF_PROFILE_AAC_HE_V2:
4006  param_write_string(pb, "FourCC", "AACP");
4007  break;
4008  case FF_PROFILE_AAC_HE:
4009  param_write_string(pb, "FourCC", "AACH");
4010  break;
4011  default:
4012  param_write_string(pb, "FourCC", "AACL");
4013  }
4014  } else if (track->par->codec_id == AV_CODEC_ID_WMAPRO) {
4015  param_write_string(pb, "FourCC", "WMAP");
4016  }
4017  param_write_hex(pb, "CodecPrivateData", track->par->extradata,
4018  track->par->extradata_size);
4020  track->par->codec_id));
4021  param_write_int(pb, "Channels", track->par->channels);
4022  param_write_int(pb, "SamplingRate", track->par->sample_rate);
4023  param_write_int(pb, "BitsPerSample", 16);
4024  param_write_int(pb, "PacketSize", track->par->block_align ?
4025  track->par->block_align : 4);
4026  }
4027  avio_printf(pb, "</%s>\n", type);
4028  }
4029  avio_printf(pb, "</switch>\n");
4030  avio_printf(pb, "</body>\n");
4031  avio_printf(pb, "</smil>\n");
4032 
4033  return update_size(pb, pos);
4034 }
4035 
4037 {
4038  avio_wb32(pb, 16);
4039  ffio_wfourcc(pb, "mfhd");
4040  avio_wb32(pb, 0);
4041  avio_wb32(pb, mov->fragments);
4042  return 0;
4043 }
4044 
4045 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
4046 {
4049 }
4050 
4052  MOVTrack *track, int64_t moof_offset)
4053 {
4054  int64_t pos = avio_tell(pb);
4057  if (!track->entry) {
4058  flags |= MOV_TFHD_DURATION_IS_EMPTY;
4059  } else {
4060  flags |= MOV_TFHD_DEFAULT_FLAGS;
4061  }
4063  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
4064  if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
4065  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
4067  }
4068 
4069  /* Don't set a default sample size, the silverlight player refuses
4070  * to play files with that set. Don't set a default sample duration,
4071  * WMP freaks out if it is set. Don't set a base data offset, PIFF
4072  * file format says it MUST NOT be set. */
4073  if (track->mode == MODE_ISM)
4076 
4077  avio_wb32(pb, 0); /* size placeholder */
4078  ffio_wfourcc(pb, "tfhd");
4079  avio_w8(pb, 0); /* version */
4080  avio_wb24(pb, flags);
4081 
4082  avio_wb32(pb, track->track_id); /* track-id */
4083  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
4084  avio_wb64(pb, moof_offset);
4085  if (flags & MOV_TFHD_DEFAULT_DURATION) {
4086  track->default_duration = get_cluster_duration(track, 0);
4087  avio_wb32(pb, track->default_duration);
4088  }
4089  if (flags & MOV_TFHD_DEFAULT_SIZE) {
4090  track->default_size = track->entry ? track->cluster[0].size : 1;
4091  avio_wb32(pb, track->default_size);
4092  } else
4093  track->default_size = -1;
4094 
4095  if (flags & MOV_TFHD_DEFAULT_FLAGS) {
4096  /* Set the default flags based on the second sample, if available.
4097  * If the first sample is different, that can be signaled via a separate field. */
4098  if (track->entry > 1)
4099  track->default_sample_flags = get_sample_flags(track, &track->cluster[1]);
4100  else
4101  track->default_sample_flags =
4102  track->par->codec_type == AVMEDIA_TYPE_VIDEO ?
4105  avio_wb32(pb, track->default_sample_flags);
4106  }
4107 
4108  return update_size(pb, pos);
4109 }
4110 
4112  MOVTrack *track, int moof_size,
4113  int first, int end)
4114 {
4115  int64_t pos = avio_tell(pb);
4116  uint32_t flags = MOV_TRUN_DATA_OFFSET;
4117  int i;
4118 
4119  for (i = first; i < end; i++) {
4120  if (get_cluster_duration(track, i) != track->default_duration)
4121  flags |= MOV_TRUN_SAMPLE_DURATION;
4122  if (track->cluster[i].size != track->default_size)
4123  flags |= MOV_TRUN_SAMPLE_SIZE;
4124  if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
4125  flags |= MOV_TRUN_SAMPLE_FLAGS;
4126  }
4127  if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
4128  get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
4129  flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
4130  if (track->flags & MOV_TRACK_CTTS)
4131  flags |= MOV_TRUN_SAMPLE_CTS;
4132 
4133  avio_wb32(pb, 0); /* size placeholder */
4134  ffio_wfourcc(pb, "trun");
4136  avio_w8(pb, 1); /* version */
4137  else
4138  avio_w8(pb, 0); /* version */
4139  avio_wb24(pb, flags);
4140 
4141  avio_wb32(pb, end - first); /* sample count */
4142  if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
4144  !mov->first_trun)
4145  avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
4146  else
4147  avio_wb32(pb, moof_size + 8 + track->data_offset +
4148  track->cluster[first].pos); /* data offset */
4149  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
4150  avio_wb32(pb, get_sample_flags(track, &track->cluster[first]));
4151 
4152  for (i = first; i < end; i++) {
4153  if (flags & MOV_TRUN_SAMPLE_DURATION)
4154  avio_wb32(pb, get_cluster_duration(track, i));
4155  if (flags & MOV_TRUN_SAMPLE_SIZE)
4156  avio_wb32(pb, track->cluster[i].size);
4157  if (flags & MOV_TRUN_SAMPLE_FLAGS)
4158  avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
4159  if (flags & MOV_TRUN_SAMPLE_CTS)
4160  avio_wb32(pb, track->cluster[i].cts);
4161  }
4162 
4163  mov->first_trun = 0;
4164  return update_size(pb, pos);
4165 }
4166 
4167 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
4168 {
4169  int64_t pos = avio_tell(pb);
4170  static const uint8_t uuid[] = {
4171  0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
4172  0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
4173  };
4174 
4175  avio_wb32(pb, 0); /* size placeholder */
4176  ffio_wfourcc(pb, "uuid");
4177  avio_write(pb, uuid, sizeof(uuid));
4178  avio_w8(pb, 1);
4179  avio_wb24(pb, 0);
4180  avio_wb64(pb, track->start_dts + track->frag_start +
4181  track->cluster[0].cts);
4182  avio_wb64(pb, track->end_pts -
4183  (track->cluster[0].dts + track->cluster[0].cts));
4184 
4185  return update_size(pb, pos);
4186 }
4187 
4189  MOVTrack *track, int entry)
4190 {
4191  int n = track->nb_frag_info - 1 - entry, i;
4192  int size = 8 + 16 + 4 + 1 + 16*n;
4193  static const uint8_t uuid[] = {
4194  0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
4195  0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
4196  };
4197 
4198  if (entry < 0)
4199  return 0;
4200 
4201  avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
4202  avio_wb32(pb, size);
4203  ffio_wfourcc(pb, "uuid");
4204  avio_write(pb, uuid, sizeof(uuid));
4205  avio_w8(pb, 1);
4206  avio_wb24(pb, 0);
4207  avio_w8(pb, n);
4208  for (i = 0; i < n; i++) {
4209  int index = entry + 1 + i;
4210  avio_wb64(pb, track->frag_info[index].time);
4211  avio_wb64(pb, track->frag_info[index].duration);
4212  }
4213  if (n < mov->ism_lookahead) {
4214  int free_size = 16 * (mov->ism_lookahead - n);
4215  avio_wb32(pb, free_size);
4216  ffio_wfourcc(pb, "free");
4217  ffio_fill(pb, 0, free_size - 8);
4218  }
4219 
4220  return 0;
4221 }
4222 
4224  MOVTrack *track)
4225 {
4226  int64_t pos = avio_tell(pb);
4227  int i;
4228  for (i = 0; i < mov->ism_lookahead; i++) {
4229  /* Update the tfrf tag for the last ism_lookahead fragments,
4230  * nb_frag_info - 1 is the next fragment to be written. */
4231  mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
4232  }
4233  avio_seek(pb, pos, SEEK_SET);
4234  return 0;
4235 }
4236 
4237 static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
4238  int size)
4239 {
4240  int i;
4241  for (i = 0; i < mov->nb_streams; i++) {
4242  MOVTrack *track = &mov->tracks[i];
4243  MOVFragmentInfo *info;
4244  if ((tracks >= 0 && i != tracks) || !track->entry)
4245  continue;
4246  track->nb_frag_info++;
4247  if (track->nb_frag_info >= track->frag_info_capacity) {
4248  unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
4249  if (av_reallocp_array(&track->frag_info,
4250  new_capacity,
4251  sizeof(*track->frag_info)))
4252  return AVERROR(ENOMEM);
4253  track->frag_info_capacity = new_capacity;
4254  }
4255  info = &track->frag_info[track->nb_frag_info - 1];
4256  info->offset = avio_tell(pb);
4257  info->size = size;
4258  // Try to recreate the original pts for the first packet
4259  // from the fields we have stored
4260  info->time = track->start_dts + track->frag_start +
4261  track->cluster[0].cts;
4262  info->duration = track->end_pts -
4263  (track->cluster[0].dts + track->cluster[0].cts);
4264  // If the pts is less than zero, we will have trimmed
4265  // away parts of the media track using an edit list,
4266  // and the corresponding start presentation time is zero.
4267  if (info->time < 0) {
4268  info->duration += info->time;
4269  info->time = 0;
4270  }
4271  info->tfrf_offset = 0;
4272  mov_write_tfrf_tags(pb, mov, track);
4273  }
4274  return 0;
4275 }
4276 
4277 static void mov_prune_frag_info(MOVMuxContext *mov, int tracks, int max)
4278 {
4279  int i;
4280  for (i = 0; i < mov->nb_streams; i++) {
4281  MOVTrack *track = &mov->tracks[i];
4282  if ((tracks >= 0 && i != tracks) || !track->entry)
4283  continue;
4284  if (track->nb_frag_info > max) {
4285  memmove(track->frag_info, track->frag_info + (track->nb_frag_info - max), max * sizeof(*track->frag_info));
4286  track->nb_frag_info = max;
4287  }
4288  }
4289 }
4290 
4291 static int mov_write_tfdt_tag(AVIOContext *pb, MOVTrack *track)
4292 {
4293  int64_t pos = avio_tell(pb);
4294 
4295  avio_wb32(pb, 0); /* size */
4296  ffio_wfourcc(pb, "tfdt");
4297  avio_w8(pb, 1); /* version */
4298  avio_wb24(pb, 0);
4299  avio_wb64(pb, track->frag_start);
4300  return update_size(pb, pos);
4301 }
4302 
4304  MOVTrack *track, int64_t moof_offset,
4305  int moof_size)
4306 {
4307  int64_t pos = avio_tell(pb);
4308  int i, start = 0;
4309  avio_wb32(pb, 0); /* size placeholder */
4310  ffio_wfourcc(pb, "traf");
4311 
4312  mov_write_tfhd_tag(pb, mov, track, moof_offset);
4313  if (mov->mode != MODE_ISM)
4314  mov_write_tfdt_tag(pb, track);
4315  for (i = 1; i < track->entry; i++) {
4316  if (track->cluster[i].pos != track->cluster[i - 1].pos + track->cluster[i - 1].size) {
4317  mov_write_trun_tag(pb, mov, track, moof_size, start, i);
4318  start = i;
4319  }
4320  }
4321  mov_write_trun_tag(pb, mov, track, moof_size, start, track->entry);
4322  if (mov->mode == MODE_ISM) {
4323  mov_write_tfxd_tag(pb, track);
4324 
4325  if (mov->ism_lookahead) {
4326  int i, size = 16 + 4 + 1 + 16 * mov->ism_lookahead;
4327 
4328  if (track->nb_frag_info > 0) {
4329  MOVFragmentInfo *info = &track->frag_info[track->nb_frag_info - 1];
4330  if (!info->tfrf_offset)
4331  info->tfrf_offset = avio_tell(pb);
4332  }
4333  avio_wb32(pb, 8 + size);
4334  ffio_wfourcc(pb, "free");
4335  for (i = 0; i < size; i++)
4336  avio_w8(pb, 0);
4337  }
4338  }
4339 
4340  return update_size(pb, pos);
4341 }
4342 
4344  int tracks, int moof_size)
4345 {
4346  int64_t pos = avio_tell(pb);
4347  int i;
4348 
4349  avio_wb32(pb, 0); /* size placeholder */
4350  ffio_wfourcc(pb, "moof");
4351  mov->first_trun = 1;
4352 
4353  mov_write_mfhd_tag(pb, mov);
4354  for (i = 0; i < mov->nb_streams; i++) {
4355  MOVTrack *track = &mov->tracks[i];
4356  if (tracks >= 0 && i != tracks)
4357  continue;
4358  if (!track->entry)
4359  continue;
4360  mov_write_traf_tag(pb, mov, track, pos, moof_size);
4361  }
4362 
4363  return update_size(pb, pos);
4364 }
4365 
4367  MOVTrack *track, int ref_size, int total_sidx_size)
4368 {
4369  int64_t pos = avio_tell(pb), offset_pos, end_pos;
4370  int64_t presentation_time, duration, offset;
4371  int starts_with_SAP, i, entries;
4372 
4373  if (track->entry) {
4374  entries = 1;
4375  presentation_time = track->start_dts + track->frag_start +
4376  track->cluster[0].cts;
4377  duration = track->end_pts -
4378  (track->cluster[0].dts + track->cluster[0].cts);
4379  starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;
4380 
4381  // pts<0 should be cut away using edts
4382  if (presentation_time < 0) {
4383  duration += presentation_time;
4384  presentation_time = 0;
4385  }
4386  } else {
4387  entries = track->nb_frag_info;
4388  if (entries <= 0)
4389  return 0;
4390  presentation_time = track->frag_info[0].time;
4391  }
4392 
4393  avio_wb32(pb, 0); /* size */
4394  ffio_wfourcc(pb, "sidx");
4395  avio_w8(pb, 1); /* version */
4396  avio_wb24(pb, 0);
4397  avio_wb32(pb, track->track_id); /* reference_ID */
4398  avio_wb32(pb, track->timescale); /* timescale */
4399  avio_wb64(pb, presentation_time); /* earliest_presentation_time */
4400  offset_pos = avio_tell(pb);
4401  avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
4402  avio_wb16(pb, 0); /* reserved */
4403 
4404  avio_wb16(pb, entries); /* reference_count */
4405  for (i = 0; i < entries; i++) {
4406  if (!track->entry) {
4407  if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
4408  av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
4409  }
4410  duration = track->frag_info[i].duration;
4411  ref_size = track->frag_info[i].size;
4412  starts_with_SAP = 1;
4413  }
4414  avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
4415  avio_wb32(pb, duration); /* subsegment_duration */
4416  avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
4417  }
4418 
4419  end_pos = avio_tell(pb);
4420  offset = pos + total_sidx_size - end_pos;
4421  avio_seek(pb, offset_pos, SEEK_SET);
4422  avio_wb64(pb, offset);
4423  avio_seek(pb, end_pos, SEEK_SET);
4424  return update_size(pb, pos);
4425 }
4426 
4428  int tracks, int ref_size)
4429 {
4430  int i, round, ret;
4431  AVIOContext *avio_buf;
4432  int total_size = 0;
4433  for (round = 0; round < 2; round++) {
4434  // First run one round to calculate the total size of all
4435  // sidx atoms.
4436  // This would be much simpler if we'd only write one sidx
4437  // atom, for the first track in the moof.
4438  if (round == 0) {
4439  if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
4440  return ret;
4441  } else {
4442  avio_buf = pb;
4443  }
4444  for (i = 0; i < mov->nb_streams; i++) {
4445  MOVTrack *track = &mov->tracks[i];
4446  if (tracks >= 0 && i != tracks)
4447  continue;
4448  // When writing a sidx for the full file, entry is 0, but
4449  // we want to include all tracks. ref_size is 0 in this case,
4450  // since we read it from frag_info instead.
4451  if (!track->entry && ref_size > 0)
4452  continue;
4453  total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
4454  total_size);
4455  }
4456  if (round == 0)
4457  total_size = ffio_close_null_b