FFmpeg
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 "av1.h"
34 #include "avc.h"
36 #include "libavcodec/dnxhddata.h"
37 #include "libavcodec/flac.h"
38 #include "libavcodec/get_bits.h"
39 
40 #include "libavcodec/internal.h"
41 #include "libavcodec/put_bits.h"
42 #include "libavcodec/vc1_common.h"
43 #include "libavcodec/raw.h"
44 #include "internal.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/intfloat.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/libm.h"
49 #include "libavutil/opt.h"
50 #include "libavutil/dict.h"
51 #include "libavutil/pixdesc.h"
52 #include "libavutil/stereo3d.h"
53 #include "libavutil/timecode.h"
54 #include "libavutil/color_utils.h"
55 #include "hevc.h"
56 #include "rtpenc.h"
57 #include "mov_chan.h"
58 #include "vpcc.h"
59 
60 static const AVOption options[] = {
61  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
62  { "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" },
63  { "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 },
64  { "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" },
65  { "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" },
66  { "frag_every_frame", "Fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_EVERY_FRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
67  { "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" },
68  { "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" },
69  { "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" },
70  { "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" },
71  { "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" },
72  { "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" },
73  { "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" },
74  { "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" },
75  { "cmaf", "Write CMAF compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_CMAF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
76  { "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" },
77  { "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" },
78  { "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" },
79  { "skip_sidx", "Skip writing of sidx atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_SIDX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
80  { "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" },
81  { "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" },
82  { "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" },
83  { "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" },
84  { "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" },
85  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
86  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
87  { "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},
88  { "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},
89  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
90  { "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},
91  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
92  { "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},
93  { "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},
94  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
95  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
96  { "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},
97  { "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},
98  { "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 },
99  { "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 },
100  { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
101  { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
102  { "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},
103  { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
104  { "write_prft", "Write producer reference time box with specified time source", offsetof(MOVMuxContext, write_prft), AV_OPT_TYPE_INT, {.i64 = MOV_PRFT_NONE}, 0, MOV_PRFT_NB-1, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
105  { "wallclock", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_WALLCLOCK}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
106  { "pts", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_PTS}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
107  { "empty_hdlr_name", "write zero-length name string in hdlr atoms within mdia and minf atoms", offsetof(MOVMuxContext, empty_hdlr_name), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
108  { NULL },
109 };
110 
111 #define MOV_CLASS(flavor)\
112 static const AVClass flavor ## _muxer_class = {\
113  .class_name = #flavor " muxer",\
114  .item_name = av_default_item_name,\
115  .option = options,\
116  .version = LIBAVUTIL_VERSION_INT,\
117 };
118 
119 static int get_moov_size(AVFormatContext *s);
120 
121 static int utf8len(const uint8_t *b)
122 {
123  int len = 0;
124  int val;
125  while (*b) {
126  GET_UTF8(val, *b++, return -1;)
127  len++;
128  }
129  return len;
130 }
131 
132 //FIXME support 64 bit variant with wide placeholders
133 static int64_t update_size(AVIOContext *pb, int64_t pos)
134 {
135  int64_t curpos = avio_tell(pb);
136  avio_seek(pb, pos, SEEK_SET);
137  avio_wb32(pb, curpos - pos); /* rewrite size */
138  avio_seek(pb, curpos, SEEK_SET);
139 
140  return curpos - pos;
141 }
142 
143 static int co64_required(const MOVTrack *track)
144 {
145  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
146  return 1;
147  return 0;
148 }
149 
150 static int is_cover_image(const AVStream *st)
151 {
152  /* Eg. AV_DISPOSITION_ATTACHED_PIC | AV_DISPOSITION_TIMED_THUMBNAILS
153  * is encoded as sparse video track */
154  return st && st->disposition == AV_DISPOSITION_ATTACHED_PIC;
155 }
156 
157 static int rtp_hinting_needed(const AVStream *st)
158 {
159  /* Add hint tracks for each real audio and video stream */
160  if (is_cover_image(st))
161  return 0;
162  return st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
164 }
165 
166 /* Chunk offset atom */
167 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
168 {
169  int i;
170  int mode64 = co64_required(track); // use 32 bit size variant if possible
171  int64_t pos = avio_tell(pb);
172  avio_wb32(pb, 0); /* size */
173  if (mode64)
174  ffio_wfourcc(pb, "co64");
175  else
176  ffio_wfourcc(pb, "stco");
177  avio_wb32(pb, 0); /* version & flags */
178  avio_wb32(pb, track->chunkCount); /* entry count */
179  for (i = 0; i < track->entry; i++) {
180  if (!track->cluster[i].chunkNum)
181  continue;
182  if (mode64 == 1)
183  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
184  else
185  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
186  }
187  return update_size(pb, pos);
188 }
189 
190 /* Sample size atom */
191 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
192 {
193  int equalChunks = 1;
194  int i, j, entries = 0, tst = -1, oldtst = -1;
195 
196  int64_t pos = avio_tell(pb);
197  avio_wb32(pb, 0); /* size */
198  ffio_wfourcc(pb, "stsz");
199  avio_wb32(pb, 0); /* version & flags */
200 
201  for (i = 0; i < track->entry; i++) {
202  tst = track->cluster[i].size / track->cluster[i].entries;
203  if (oldtst != -1 && tst != oldtst)
204  equalChunks = 0;
205  oldtst = tst;
206  entries += track->cluster[i].entries;
207  }
208  if (equalChunks && track->entry) {
209  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
210  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
211  avio_wb32(pb, sSize); // sample size
212  avio_wb32(pb, entries); // sample count
213  } else {
214  avio_wb32(pb, 0); // sample size
215  avio_wb32(pb, entries); // sample count
216  for (i = 0; i < track->entry; i++) {
217  for (j = 0; j < track->cluster[i].entries; j++) {
218  avio_wb32(pb, track->cluster[i].size /
219  track->cluster[i].entries);
220  }
221  }
222  }
223  return update_size(pb, pos);
224 }
225 
226 /* Sample to chunk atom */
227 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
228 {
229  int index = 0, oldval = -1, i;
230  int64_t entryPos, curpos;
231 
232  int64_t pos = avio_tell(pb);
233  avio_wb32(pb, 0); /* size */
234  ffio_wfourcc(pb, "stsc");
235  avio_wb32(pb, 0); // version & flags
236  entryPos = avio_tell(pb);
237  avio_wb32(pb, track->chunkCount); // entry count
238  for (i = 0; i < track->entry; i++) {
239  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
240  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
241  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
242  avio_wb32(pb, 0x1); // sample description index
243  oldval = track->cluster[i].samples_in_chunk;
244  index++;
245  }
246  }
247  curpos = avio_tell(pb);
248  avio_seek(pb, entryPos, SEEK_SET);
249  avio_wb32(pb, index); // rewrite size
250  avio_seek(pb, curpos, SEEK_SET);
251 
252  return update_size(pb, pos);
253 }
254 
255 /* Sync sample atom */
256 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
257 {
258  int64_t curpos, entryPos;
259  int i, index = 0;
260  int64_t pos = avio_tell(pb);
261  avio_wb32(pb, 0); // size
262  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
263  avio_wb32(pb, 0); // version & flags
264  entryPos = avio_tell(pb);
265  avio_wb32(pb, track->entry); // entry count
266  for (i = 0; i < track->entry; i++) {
267  if (track->cluster[i].flags & flag) {
268  avio_wb32(pb, i + 1);
269  index++;
270  }
271  }
272  curpos = avio_tell(pb);
273  avio_seek(pb, entryPos, SEEK_SET);
274  avio_wb32(pb, index); // rewrite size
275  avio_seek(pb, curpos, SEEK_SET);
276  return update_size(pb, pos);
277 }
278 
279 /* Sample dependency atom */
280 static int mov_write_sdtp_tag(AVIOContext *pb, MOVTrack *track)
281 {
282  int i;
283  uint8_t leading, dependent, reference, redundancy;
284  int64_t pos = avio_tell(pb);
285  avio_wb32(pb, 0); // size
286  ffio_wfourcc(pb, "sdtp");
287  avio_wb32(pb, 0); // version & flags
288  for (i = 0; i < track->entry; i++) {
289  dependent = MOV_SAMPLE_DEPENDENCY_YES;
290  leading = reference = redundancy = MOV_SAMPLE_DEPENDENCY_UNKNOWN;
291  if (track->cluster[i].flags & MOV_DISPOSABLE_SAMPLE) {
292  reference = MOV_SAMPLE_DEPENDENCY_NO;
293  }
294  if (track->cluster[i].flags & MOV_SYNC_SAMPLE) {
295  dependent = MOV_SAMPLE_DEPENDENCY_NO;
296  }
297  avio_w8(pb, (leading << 6) | (dependent << 4) |
298  (reference << 2) | redundancy);
299  }
300  return update_size(pb, pos);
301 }
302 
303 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
304 {
305  avio_wb32(pb, 0x11); /* size */
306  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
307  else ffio_wfourcc(pb, "damr");
308  ffio_wfourcc(pb, "FFMP");
309  avio_w8(pb, 0); /* decoder version */
310 
311  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
312  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
313  avio_w8(pb, 0x01); /* Frames per sample */
314  return 0x11;
315 }
316 
318 {
319  GetBitContext gbc;
320  PutBitContext pbc;
321  uint8_t buf[3];
322  int fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
323 
324  if (track->vos_len < 7) {
325  av_log(s, AV_LOG_ERROR,
326  "Cannot write moov atom before AC3 packets."
327  " Set the delay_moov flag to fix this.\n");
328  return AVERROR(EINVAL);
329  }
330 
331  avio_wb32(pb, 11);
332  ffio_wfourcc(pb, "dac3");
333 
334  init_get_bits(&gbc, track->vos_data + 4, (track->vos_len - 4) * 8);
335  fscod = get_bits(&gbc, 2);
336  frmsizecod = get_bits(&gbc, 6);
337  bsid = get_bits(&gbc, 5);
338  bsmod = get_bits(&gbc, 3);
339  acmod = get_bits(&gbc, 3);
340  if (acmod == 2) {
341  skip_bits(&gbc, 2); // dsurmod
342  } else {
343  if ((acmod & 1) && acmod != 1)
344  skip_bits(&gbc, 2); // cmixlev
345  if (acmod & 4)
346  skip_bits(&gbc, 2); // surmixlev
347  }
348  lfeon = get_bits1(&gbc);
349 
350  init_put_bits(&pbc, buf, sizeof(buf));
351  put_bits(&pbc, 2, fscod);
352  put_bits(&pbc, 5, bsid);
353  put_bits(&pbc, 3, bsmod);
354  put_bits(&pbc, 3, acmod);
355  put_bits(&pbc, 1, lfeon);
356  put_bits(&pbc, 5, frmsizecod >> 1); // bit_rate_code
357  put_bits(&pbc, 5, 0); // reserved
358 
359  flush_put_bits(&pbc);
360  avio_write(pb, buf, sizeof(buf));
361 
362  return 11;
363 }
364 
365 struct eac3_info {
369 
370  /* Layout of the EC3SpecificBox */
371  /* maximum bitrate */
372  uint16_t data_rate;
373  /* number of independent substreams */
375  struct {
376  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
378  /* bit stream identification 5 bits */
380  /* one bit reserved */
381  /* audio service mixing (not supported yet) 1 bit */
382  /* bit stream mode 3 bits */
384  /* audio coding mode 3 bits */
386  /* sub woofer on 1 bit */
388  /* 3 bits reserved */
389  /* number of dependent substreams associated with this substream 4 bits */
391  /* channel locations of the dependent substream(s), if any, 9 bits */
392  uint16_t chan_loc;
393  /* if there is no dependent substream, then one bit reserved instead */
394  } substream[1]; /* TODO: support 8 independent substreams */
395 };
396 
397 #if CONFIG_AC3_PARSER
398 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
399 {
400  AC3HeaderInfo *hdr = NULL;
401  struct eac3_info *info;
402  int num_blocks, ret;
403 
404  if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
405  return AVERROR(ENOMEM);
406  info = track->eac3_priv;
407 
408  if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) < 0) {
409  /* drop the packets until we see a good one */
410  if (!track->entry) {
411  av_log(mov->fc, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
412  ret = 0;
413  } else
414  ret = AVERROR_INVALIDDATA;
415  goto end;
416  }
417 
418  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
419  num_blocks = hdr->num_blocks;
420 
421  if (!info->ec3_done) {
422  /* AC-3 substream must be the first one */
423  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0) {
424  ret = AVERROR(EINVAL);
425  goto end;
426  }
427 
428  /* this should always be the case, given that our AC-3 parser
429  * concatenates dependent frames to their independent parent */
431  /* substream ids must be incremental */
432  if (hdr->substreamid > info->num_ind_sub + 1) {
433  ret = AVERROR(EINVAL);
434  goto end;
435  }
436 
437  if (hdr->substreamid == info->num_ind_sub + 1) {
438  //info->num_ind_sub++;
439  avpriv_request_sample(mov->fc, "Multiple independent substreams");
440  ret = AVERROR_PATCHWELCOME;
441  goto end;
442  } else if (hdr->substreamid < info->num_ind_sub ||
443  hdr->substreamid == 0 && info->substream[0].bsid) {
444  info->ec3_done = 1;
445  goto concatenate;
446  }
447  } else {
448  if (hdr->substreamid != 0) {
449  avpriv_request_sample(mov->fc, "Multiple non EAC3 independent substreams");
450  ret = AVERROR_PATCHWELCOME;
451  goto end;
452  }
453  }
454 
455  /* fill the info needed for the "dec3" atom */
456  info->substream[hdr->substreamid].fscod = hdr->sr_code;
457  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
458  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
459  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
460  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
461 
462  /* Parse dependent substream(s), if any */
463  if (pkt->size != hdr->frame_size) {
464  int cumul_size = hdr->frame_size;
465  int parent = hdr->substreamid;
466 
467  while (cumul_size != pkt->size) {
468  GetBitContext gbc;
469  int i;
470  ret = avpriv_ac3_parse_header(&hdr, pkt->data + cumul_size, pkt->size - cumul_size);
471  if (ret < 0)
472  goto end;
474  ret = AVERROR(EINVAL);
475  goto end;
476  }
477  info->substream[parent].num_dep_sub++;
478  ret /= 8;
479 
480  /* header is parsed up to lfeon, but custom channel map may be needed */
481  init_get_bits8(&gbc, pkt->data + cumul_size + ret, pkt->size - cumul_size - ret);
482  /* skip bsid */
483  skip_bits(&gbc, 5);
484  /* skip volume control params */
485  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
486  skip_bits(&gbc, 5); // skip dialog normalization
487  if (get_bits1(&gbc)) {
488  skip_bits(&gbc, 8); // skip compression gain word
489  }
490  }
491  /* get the dependent stream channel map, if exists */
492  if (get_bits1(&gbc))
493  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
494  else
495  info->substream[parent].chan_loc |= hdr->channel_mode;
496  cumul_size += hdr->frame_size;
497  }
498  }
499  }
500 
501 concatenate:
502  if (!info->num_blocks && num_blocks == 6) {
503  ret = pkt->size;
504  goto end;
505  }
506  else if (info->num_blocks + num_blocks > 6) {
507  ret = AVERROR_INVALIDDATA;
508  goto end;
509  }
510 
511  if (!info->num_blocks) {
512  ret = av_packet_ref(&info->pkt, pkt);
513  if (!ret)
514  info->num_blocks = num_blocks;
515  goto end;
516  } else {
517  if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
518  goto end;
519  memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
520  info->num_blocks += num_blocks;
521  info->pkt.duration += pkt->duration;
522  if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
523  goto end;
524  if (info->num_blocks != 6)
525  goto end;
526  av_packet_unref(pkt);
527  av_packet_move_ref(pkt, &info->pkt);
528  info->num_blocks = 0;
529  }
530  ret = pkt->size;
531 
532 end:
533  av_free(hdr);
534 
535  return ret;
536 }
537 #endif
538 
540 {
541  PutBitContext pbc;
542  uint8_t *buf;
543  struct eac3_info *info;
544  int size, i;
545 
546  if (!track->eac3_priv) {
547  av_log(s, AV_LOG_ERROR,
548  "Cannot write moov atom before EAC3 packets parsed.\n");
549  return AVERROR(EINVAL);
550  }
551 
552  info = track->eac3_priv;
553  size = 2 + ((34 * (info->num_ind_sub + 1) + 7) >> 3);
554  buf = av_malloc(size);
555  if (!buf) {
556  return AVERROR(ENOMEM);
557  }
558 
559  init_put_bits(&pbc, buf, size);
560  put_bits(&pbc, 13, info->data_rate);
561  put_bits(&pbc, 3, info->num_ind_sub);
562  for (i = 0; i <= info->num_ind_sub; i++) {
563  put_bits(&pbc, 2, info->substream[i].fscod);
564  put_bits(&pbc, 5, info->substream[i].bsid);
565  put_bits(&pbc, 1, 0); /* reserved */
566  put_bits(&pbc, 1, 0); /* asvc */
567  put_bits(&pbc, 3, info->substream[i].bsmod);
568  put_bits(&pbc, 3, info->substream[i].acmod);
569  put_bits(&pbc, 1, info->substream[i].lfeon);
570  put_bits(&pbc, 5, 0); /* reserved */
571  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
572  if (!info->substream[i].num_dep_sub) {
573  put_bits(&pbc, 1, 0); /* reserved */
574  } else {
575  put_bits(&pbc, 9, info->substream[i].chan_loc);
576  }
577  }
578  flush_put_bits(&pbc);
579  size = put_bits_count(&pbc) >> 3;
580 
581  avio_wb32(pb, size + 8);
582  ffio_wfourcc(pb, "dec3");
583  avio_write(pb, buf, size);
584 
585  av_free(buf);
586 
587  return size;
588 }
589 
590 /**
591  * This function writes extradata "as is".
592  * Extradata must be formatted like a valid atom (with size and tag).
593  */
595 {
596  avio_write(pb, track->par->extradata, track->par->extradata_size);
597  return track->par->extradata_size;
598 }
599 
601 {
602  avio_wb32(pb, 10);
603  ffio_wfourcc(pb, "enda");
604  avio_wb16(pb, 1); /* little endian */
605  return 10;
606 }
607 
609 {
610  avio_wb32(pb, 10);
611  ffio_wfourcc(pb, "enda");
612  avio_wb16(pb, 0); /* big endian */
613  return 10;
614 }
615 
616 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
617 {
618  int i = 3;
619  avio_w8(pb, tag);
620  for (; i > 0; i--)
621  avio_w8(pb, (size >> (7 * i)) | 0x80);
622  avio_w8(pb, size & 0x7F);
623 }
624 
625 static unsigned compute_avg_bitrate(MOVTrack *track)
626 {
627  uint64_t size = 0;
628  int i;
629  if (!track->track_duration)
630  return 0;
631  for (i = 0; i < track->entry; i++)
632  size += track->cluster[i].size;
633  return size * 8 * track->timescale / track->track_duration;
634 }
635 
636 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
637 {
638  AVCPBProperties *props;
639  int64_t pos = avio_tell(pb);
640  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
641  unsigned avg_bitrate;
642 
643  avio_wb32(pb, 0); // size
644  ffio_wfourcc(pb, "esds");
645  avio_wb32(pb, 0); // Version
646 
647  // ES descriptor
648  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
649  avio_wb16(pb, track->track_id);
650  avio_w8(pb, 0x00); // flags (= no flags)
651 
652  // DecoderConfig descriptor
653  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
654 
655  // Object type indication
656  if ((track->par->codec_id == AV_CODEC_ID_MP2 ||
657  track->par->codec_id == AV_CODEC_ID_MP3) &&
658  track->par->sample_rate > 24000)
659  avio_w8(pb, 0x6B); // 11172-3
660  else
662 
663  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
664  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
665  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
666  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
667  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
668  avio_w8(pb, 0x15); // flags (= Audiostream)
669  else
670  avio_w8(pb, 0x11); // flags (= Visualstream)
671 
673  NULL);
674 
675  avio_wb24(pb, props ? props->buffer_size / 8 : 0); // Buffersize DB
676 
677  avg_bitrate = compute_avg_bitrate(track);
678  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)
679  avio_wb32(pb, avg_bitrate);
680 
681  if (track->vos_len) {
682  // DecoderSpecific info descriptor
683  put_descr(pb, 0x05, track->vos_len);
684  avio_write(pb, track->vos_data, track->vos_len);
685  }
686 
687  // SL descriptor
688  put_descr(pb, 0x06, 1);
689  avio_w8(pb, 0x02);
690  return update_size(pb, pos);
691 }
692 
694 {
695  return codec_id == AV_CODEC_ID_PCM_S24LE ||
696  codec_id == AV_CODEC_ID_PCM_S32LE ||
697  codec_id == AV_CODEC_ID_PCM_F32LE ||
698  codec_id == AV_CODEC_ID_PCM_F64LE;
699 }
700 
702 {
703  return codec_id == AV_CODEC_ID_PCM_S24BE ||
704  codec_id == AV_CODEC_ID_PCM_S32BE ||
705  codec_id == AV_CODEC_ID_PCM_F32BE ||
706  codec_id == AV_CODEC_ID_PCM_F64BE;
707 }
708 
710 {
711  int ret;
712  int64_t pos = avio_tell(pb);
713  avio_wb32(pb, 0);
714  avio_wl32(pb, track->tag); // store it byteswapped
715  track->par->codec_tag = av_bswap16(track->tag >> 16);
716  if ((ret = ff_put_wav_header(s, pb, track->par, 0)) < 0)
717  return ret;
718  return update_size(pb, pos);
719 }
720 
722 {
723  int ret;
724  int64_t pos = avio_tell(pb);
725  avio_wb32(pb, 0);
726  ffio_wfourcc(pb, "wfex");
727  if ((ret = ff_put_wav_header(s, pb, track->st->codecpar, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
728  return ret;
729  return update_size(pb, pos);
730 }
731 
732 static int mov_write_dfla_tag(AVIOContext *pb, MOVTrack *track)
733 {
734  int64_t pos = avio_tell(pb);
735  avio_wb32(pb, 0);
736  ffio_wfourcc(pb, "dfLa");
737  avio_w8(pb, 0); /* version */
738  avio_wb24(pb, 0); /* flags */
739 
740  /* Expect the encoder to pass a METADATA_BLOCK_TYPE_STREAMINFO. */
741  if (track->par->extradata_size != FLAC_STREAMINFO_SIZE)
742  return AVERROR_INVALIDDATA;
743 
744  /* TODO: Write other METADATA_BLOCK_TYPEs if the encoder makes them available. */
745  avio_w8(pb, 1 << 7 | FLAC_METADATA_TYPE_STREAMINFO); /* LastMetadataBlockFlag << 7 | BlockType */
746  avio_wb24(pb, track->par->extradata_size); /* Length */
747  avio_write(pb, track->par->extradata, track->par->extradata_size); /* BlockData[Length] */
748 
749  return update_size(pb, pos);
750 }
751 
753 {
754  int64_t pos = avio_tell(pb);
755  avio_wb32(pb, 0);
756  ffio_wfourcc(pb, "dOps");
757  avio_w8(pb, 0); /* Version */
758  if (track->par->extradata_size < 19) {
759  av_log(s, AV_LOG_ERROR, "invalid extradata size\n");
760  return AVERROR_INVALIDDATA;
761  }
762  /* extradata contains an Ogg OpusHead, other than byte-ordering and
763  OpusHead's preceeding magic/version, OpusSpecificBox is currently
764  identical. */
765  avio_w8(pb, AV_RB8(track->par->extradata + 9)); /* OuputChannelCount */
766  avio_wb16(pb, AV_RL16(track->par->extradata + 10)); /* PreSkip */
767  avio_wb32(pb, AV_RL32(track->par->extradata + 12)); /* InputSampleRate */
768  avio_wb16(pb, AV_RL16(track->par->extradata + 16)); /* OutputGain */
769  /* Write the rest of the header out without byte-swapping. */
770  avio_write(pb, track->par->extradata + 18, track->par->extradata_size - 18);
771 
772  return update_size(pb, pos);
773 }
774 
776 {
777  int64_t pos = avio_tell(pb);
778  int length;
779  avio_wb32(pb, 0);
780  ffio_wfourcc(pb, "dmlp");
781 
782  if (track->vos_len < 20) {
783  av_log(s, AV_LOG_ERROR,
784  "Cannot write moov atom before TrueHD packets."
785  " Set the delay_moov flag to fix this.\n");
786  return AVERROR(EINVAL);
787  }
788 
789  length = (AV_RB16(track->vos_data) & 0xFFF) * 2;
790  if (length < 20 || length > track->vos_len)
791  return AVERROR_INVALIDDATA;
792 
793  // Only TrueHD is supported
794  if (AV_RB32(track->vos_data + 4) != 0xF8726FBA)
795  return AVERROR_INVALIDDATA;
796 
797  avio_wb32(pb, AV_RB32(track->vos_data + 8)); /* format_info */
798  avio_wb16(pb, AV_RB16(track->vos_data + 18) << 1); /* peak_data_rate */
799  avio_wb32(pb, 0); /* reserved */
800 
801  return update_size(pb, pos);
802 }
803 
805 {
806  uint32_t layout_tag, bitmap;
807  int64_t pos = avio_tell(pb);
808 
809  layout_tag = ff_mov_get_channel_layout_tag(track->par->codec_id,
810  track->par->channel_layout,
811  &bitmap);
812  if (!layout_tag) {
813  av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "
814  "lack of channel information\n");
815  return 0;
816  }
817 
818  if (track->multichannel_as_mono)
819  return 0;
820 
821  avio_wb32(pb, 0); // Size
822  ffio_wfourcc(pb, "chan"); // Type
823  avio_w8(pb, 0); // Version
824  avio_wb24(pb, 0); // Flags
825  avio_wb32(pb, layout_tag); // mChannelLayoutTag
826  avio_wb32(pb, bitmap); // mChannelBitmap
827  avio_wb32(pb, 0); // mNumberChannelDescriptions
828 
829  return update_size(pb, pos);
830 }
831 
833 {
834  int64_t pos = avio_tell(pb);
835 
836  avio_wb32(pb, 0); /* size */
837  ffio_wfourcc(pb, "wave");
838 
839  if (track->par->codec_id != AV_CODEC_ID_QDM2) {
840  avio_wb32(pb, 12); /* size */
841  ffio_wfourcc(pb, "frma");
842  avio_wl32(pb, track->tag);
843  }
844 
845  if (track->par->codec_id == AV_CODEC_ID_AAC) {
846  /* useless atom needed by mplayer, ipod, not needed by quicktime */
847  avio_wb32(pb, 12); /* size */
848  ffio_wfourcc(pb, "mp4a");
849  avio_wb32(pb, 0);
850  mov_write_esds_tag(pb, track);
851  } else if (mov_pcm_le_gt16(track->par->codec_id)) {
852  mov_write_enda_tag(pb);
853  } else if (mov_pcm_be_gt16(track->par->codec_id)) {
855  } else if (track->par->codec_id == AV_CODEC_ID_AMR_NB) {
856  mov_write_amr_tag(pb, track);
857  } else if (track->par->codec_id == AV_CODEC_ID_AC3) {
858  mov_write_ac3_tag(s, pb, track);
859  } else if (track->par->codec_id == AV_CODEC_ID_EAC3) {
860  mov_write_eac3_tag(s, pb, track);
861  } else if (track->par->codec_id == AV_CODEC_ID_ALAC ||
862  track->par->codec_id == AV_CODEC_ID_QDM2) {
863  mov_write_extradata_tag(pb, track);
864  } else if (track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
866  mov_write_ms_tag(s, pb, track);
867  }
868 
869  avio_wb32(pb, 8); /* size */
870  avio_wb32(pb, 0); /* null tag */
871 
872  return update_size(pb, pos);
873 }
874 
876 {
877  uint8_t *unescaped;
878  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
879  int unescaped_size, seq_found = 0;
880  int level = 0, interlace = 0;
881  int packet_seq = track->vc1_info.packet_seq;
882  int packet_entry = track->vc1_info.packet_entry;
883  int slices = track->vc1_info.slices;
884  PutBitContext pbc;
885 
886  if (track->start_dts == AV_NOPTS_VALUE) {
887  /* No packets written yet, vc1_info isn't authoritative yet. */
888  /* Assume inline sequence and entry headers. */
889  packet_seq = packet_entry = 1;
891  "moov atom written before any packets, unable to write correct "
892  "dvc1 atom. Set the delay_moov flag to fix this.\n");
893  }
894 
895  unescaped = av_mallocz(track->vos_len + AV_INPUT_BUFFER_PADDING_SIZE);
896  if (!unescaped)
897  return AVERROR(ENOMEM);
898  start = find_next_marker(track->vos_data, end);
899  for (next = start; next < end; start = next) {
900  GetBitContext gb;
901  int size;
902  next = find_next_marker(start + 4, end);
903  size = next - start - 4;
904  if (size <= 0)
905  continue;
906  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
907  init_get_bits(&gb, unescaped, 8 * unescaped_size);
908  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
909  int profile = get_bits(&gb, 2);
910  if (profile != PROFILE_ADVANCED) {
911  av_free(unescaped);
912  return AVERROR(ENOSYS);
913  }
914  seq_found = 1;
915  level = get_bits(&gb, 3);
916  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
917  * width, height */
918  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
919  skip_bits(&gb, 1); /* broadcast */
920  interlace = get_bits1(&gb);
921  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
922  }
923  }
924  if (!seq_found) {
925  av_free(unescaped);
926  return AVERROR(ENOSYS);
927  }
928 
929  init_put_bits(&pbc, buf, 7);
930  /* VC1DecSpecStruc */
931  put_bits(&pbc, 4, 12); /* profile - advanced */
932  put_bits(&pbc, 3, level);
933  put_bits(&pbc, 1, 0); /* reserved */
934  /* VC1AdvDecSpecStruc */
935  put_bits(&pbc, 3, level);
936  put_bits(&pbc, 1, 0); /* cbr */
937  put_bits(&pbc, 6, 0); /* reserved */
938  put_bits(&pbc, 1, !interlace); /* no interlace */
939  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
940  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
941  put_bits(&pbc, 1, !slices); /* no slice code */
942  put_bits(&pbc, 1, 0); /* no bframe */
943  put_bits(&pbc, 1, 0); /* reserved */
944 
945  /* framerate */
946  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
947  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
948  else
949  put_bits32(&pbc, 0xffffffff);
950 
951  flush_put_bits(&pbc);
952 
953  av_free(unescaped);
954 
955  return 0;
956 }
957 
958 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
959 {
960  uint8_t buf[7] = { 0 };
961  int ret;
962 
963  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
964  return ret;
965 
966  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
967  ffio_wfourcc(pb, "dvc1");
968  avio_write(pb, buf, sizeof(buf));
969  avio_write(pb, track->vos_data, track->vos_len);
970 
971  return 0;
972 }
973 
974 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
975 {
976  avio_wb32(pb, track->vos_len + 8);
977  ffio_wfourcc(pb, "glbl");
978  avio_write(pb, track->vos_data, track->vos_len);
979  return 8 + track->vos_len;
980 }
981 
982 /**
983  * Compute flags for 'lpcm' tag.
984  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
985  */
987 {
988  switch (codec_id) {
991  return 11;
994  return 9;
995  case AV_CODEC_ID_PCM_U8:
996  return 10;
1000  return 14;
1001  case AV_CODEC_ID_PCM_S8:
1002  case AV_CODEC_ID_PCM_S16LE:
1003  case AV_CODEC_ID_PCM_S24LE:
1004  case AV_CODEC_ID_PCM_S32LE:
1005  return 12;
1006  default:
1007  return 0;
1008  }
1009 }
1010 
1011 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
1012 {
1013  int64_t next_dts;
1014 
1015  if (cluster_idx >= track->entry)
1016  return 0;
1017 
1018  if (cluster_idx + 1 == track->entry)
1019  next_dts = track->track_duration + track->start_dts;
1020  else
1021  next_dts = track->cluster[cluster_idx + 1].dts;
1022 
1023  next_dts -= track->cluster[cluster_idx].dts;
1024 
1025  av_assert0(next_dts >= 0);
1026  av_assert0(next_dts <= INT_MAX);
1027 
1028  return next_dts;
1029 }
1030 
1032 {
1033  int i, first_duration;
1034 
1035 // return track->par->frame_size;
1036 
1037  /* use 1 for raw PCM */
1038  if (!track->audio_vbr)
1039  return 1;
1040 
1041  /* check to see if duration is constant for all clusters */
1042  if (!track->entry)
1043  return 0;
1044  first_duration = get_cluster_duration(track, 0);
1045  for (i = 1; i < track->entry; i++) {
1046  if (get_cluster_duration(track, i) != first_duration)
1047  return 0;
1048  }
1049  return first_duration;
1050 }
1051 
1053 {
1054  int64_t pos = avio_tell(pb);
1055  int version = 0;
1056  uint32_t tag = track->tag;
1057  int ret = 0;
1058 
1059  if (track->mode == MODE_MOV) {
1060  if (track->timescale > UINT16_MAX || !track->par->channels) {
1061  if (mov_get_lpcm_flags(track->par->codec_id))
1062  tag = AV_RL32("lpcm");
1063  version = 2;
1064  } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||
1065  mov_pcm_be_gt16(track->par->codec_id) ||
1066  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1067  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1068  track->par->codec_id == AV_CODEC_ID_QDM2) {
1069  version = 1;
1070  }
1071  }
1072 
1073  avio_wb32(pb, 0); /* size */
1074  if (mov->encryption_scheme != MOV_ENC_NONE) {
1075  ffio_wfourcc(pb, "enca");
1076  } else {
1077  avio_wl32(pb, tag); // store it byteswapped
1078  }
1079  avio_wb32(pb, 0); /* Reserved */
1080  avio_wb16(pb, 0); /* Reserved */
1081  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
1082 
1083  /* SoundDescription */
1084  avio_wb16(pb, version); /* Version */
1085  avio_wb16(pb, 0); /* Revision level */
1086  avio_wb32(pb, 0); /* Reserved */
1087 
1088  if (version == 2) {
1089  avio_wb16(pb, 3);
1090  avio_wb16(pb, 16);
1091  avio_wb16(pb, 0xfffe);
1092  avio_wb16(pb, 0);
1093  avio_wb32(pb, 0x00010000);
1094  avio_wb32(pb, 72);
1095  avio_wb64(pb, av_double2int(track->par->sample_rate));
1096  avio_wb32(pb, track->par->channels);
1097  avio_wb32(pb, 0x7F000000);
1099  avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
1100  avio_wb32(pb, track->sample_size);
1101  avio_wb32(pb, get_samples_per_packet(track));
1102  } else {
1103  if (track->mode == MODE_MOV) {
1104  avio_wb16(pb, track->par->channels);
1105  if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
1106  track->par->codec_id == AV_CODEC_ID_PCM_S8)
1107  avio_wb16(pb, 8); /* bits per sample */
1108  else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
1109  avio_wb16(pb, track->par->bits_per_coded_sample);
1110  else
1111  avio_wb16(pb, 16);
1112  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
1113  } else { /* reserved for mp4/3gp */
1114  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1115  track->par->codec_id == AV_CODEC_ID_ALAC ||
1116  track->par->codec_id == AV_CODEC_ID_OPUS) {
1117  avio_wb16(pb, track->par->channels);
1118  } else {
1119  avio_wb16(pb, 2);
1120  }
1121  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1122  track->par->codec_id == AV_CODEC_ID_ALAC) {
1123  avio_wb16(pb, track->par->bits_per_raw_sample);
1124  } else {
1125  avio_wb16(pb, 16);
1126  }
1127  avio_wb16(pb, 0);
1128  }
1129 
1130  avio_wb16(pb, 0); /* packet size (= 0) */
1131  if (track->par->codec_id == AV_CODEC_ID_OPUS)
1132  avio_wb16(pb, 48000);
1133  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1134  avio_wb32(pb, track->par->sample_rate);
1135  else
1136  avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
1137  track->par->sample_rate : 0);
1138 
1139  if (track->par->codec_id != AV_CODEC_ID_TRUEHD)
1140  avio_wb16(pb, 0); /* Reserved */
1141  }
1142 
1143  if (version == 1) { /* SoundDescription V1 extended info */
1144  if (mov_pcm_le_gt16(track->par->codec_id) ||
1145  mov_pcm_be_gt16(track->par->codec_id))
1146  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
1147  else
1148  avio_wb32(pb, track->par->frame_size); /* Samples per packet */
1149  avio_wb32(pb, track->sample_size / track->par->channels); /* Bytes per packet */
1150  avio_wb32(pb, track->sample_size); /* Bytes per frame */
1151  avio_wb32(pb, 2); /* Bytes per sample */
1152  }
1153 
1154  if (track->mode == MODE_MOV &&
1155  (track->par->codec_id == AV_CODEC_ID_AAC ||
1156  track->par->codec_id == AV_CODEC_ID_AC3 ||
1157  track->par->codec_id == AV_CODEC_ID_EAC3 ||
1158  track->par->codec_id == AV_CODEC_ID_AMR_NB ||
1159  track->par->codec_id == AV_CODEC_ID_ALAC ||
1160  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1161  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1162  track->par->codec_id == AV_CODEC_ID_QDM2 ||
1163  (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||
1164  (mov_pcm_be_gt16(track->par->codec_id) && version==1)))
1165  ret = mov_write_wave_tag(s, pb, track);
1166  else if (track->tag == MKTAG('m','p','4','a'))
1167  ret = mov_write_esds_tag(pb, track);
1168  else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)
1169  ret = mov_write_amr_tag(pb, track);
1170  else if (track->par->codec_id == AV_CODEC_ID_AC3)
1171  ret = mov_write_ac3_tag(s, pb, track);
1172  else if (track->par->codec_id == AV_CODEC_ID_EAC3)
1173  ret = mov_write_eac3_tag(s, pb, track);
1174  else if (track->par->codec_id == AV_CODEC_ID_ALAC)
1175  ret = mov_write_extradata_tag(pb, track);
1176  else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)
1177  ret = mov_write_wfex_tag(s, pb, track);
1178  else if (track->par->codec_id == AV_CODEC_ID_FLAC)
1179  ret = mov_write_dfla_tag(pb, track);
1180  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1181  ret = mov_write_dops_tag(s, pb, track);
1182  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1183  ret = mov_write_dmlp_tag(s, pb, track);
1184  else if (track->vos_len > 0)
1185  ret = mov_write_glbl_tag(pb, track);
1186 
1187  if (ret < 0)
1188  return ret;
1189 
1190  if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO
1191  && ((ret = mov_write_chan_tag(s, pb, track)) < 0)) {
1192  return ret;
1193  }
1194 
1195  if (mov->encryption_scheme != MOV_ENC_NONE
1196  && ((ret = ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid)) < 0)) {
1197  return ret;
1198  }
1199 
1200  ret = update_size(pb, pos);
1201  return ret;
1202 }
1203 
1205 {
1206  avio_wb32(pb, 0xf); /* size */
1207  ffio_wfourcc(pb, "d263");
1208  ffio_wfourcc(pb, "FFMP");
1209  avio_w8(pb, 0); /* decoder version */
1210  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1211  avio_w8(pb, 0xa); /* level */
1212  avio_w8(pb, 0); /* profile */
1213  return 0xf;
1214 }
1215 
1216 static int mov_write_av1c_tag(AVIOContext *pb, MOVTrack *track)
1217 {
1218  int64_t pos = avio_tell(pb);
1219 
1220  avio_wb32(pb, 0);
1221  ffio_wfourcc(pb, "av1C");
1222  ff_isom_write_av1c(pb, track->vos_data, track->vos_len);
1223  return update_size(pb, pos);
1224 }
1225 
1226 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1227 {
1228  int64_t pos = avio_tell(pb);
1229 
1230  avio_wb32(pb, 0);
1231  ffio_wfourcc(pb, "avcC");
1232  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1233  return update_size(pb, pos);
1234 }
1235 
1237 {
1238  int64_t pos = avio_tell(pb);
1239 
1240  avio_wb32(pb, 0);
1241  ffio_wfourcc(pb, "vpcC");
1242  avio_w8(pb, 1); /* version */
1243  avio_wb24(pb, 0); /* flags */
1244  ff_isom_write_vpcc(s, pb, track->par);
1245  return update_size(pb, pos);
1246 }
1247 
1248 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1249 {
1250  int64_t pos = avio_tell(pb);
1251 
1252  avio_wb32(pb, 0);
1253  ffio_wfourcc(pb, "hvcC");
1254  if (track->tag == MKTAG('h','v','c','1'))
1255  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1);
1256  else
1257  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1258  return update_size(pb, pos);
1259 }
1260 
1261 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1262 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1263 {
1264  int i;
1265  int interlaced;
1266  int cid;
1267  int display_width = track->par->width;
1268 
1269  if (track->vos_data && track->vos_len > 0x29) {
1270  if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {
1271  /* looks like a DNxHD bit stream */
1272  interlaced = (track->vos_data[5] & 2);
1273  cid = AV_RB32(track->vos_data + 0x28);
1274  } else {
1275  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");
1276  return 0;
1277  }
1278  } else {
1279  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");
1280  return 0;
1281  }
1282 
1283  avio_wb32(pb, 24); /* size */
1284  ffio_wfourcc(pb, "ACLR");
1285  ffio_wfourcc(pb, "ACLR");
1286  ffio_wfourcc(pb, "0001");
1287  if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */
1289  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1290  } else { /* Full range (0-255) */
1291  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1292  }
1293  avio_wb32(pb, 0); /* unknown */
1294 
1295  if (track->tag == MKTAG('A','V','d','h')) {
1296  avio_wb32(pb, 32);
1297  ffio_wfourcc(pb, "ADHR");
1298  ffio_wfourcc(pb, "0001");
1299  avio_wb32(pb, cid);
1300  avio_wb32(pb, 0); /* unknown */
1301  avio_wb32(pb, 1); /* unknown */
1302  avio_wb32(pb, 0); /* unknown */
1303  avio_wb32(pb, 0); /* unknown */
1304  return 0;
1305  }
1306 
1307  avio_wb32(pb, 24); /* size */
1308  ffio_wfourcc(pb, "APRG");
1309  ffio_wfourcc(pb, "APRG");
1310  ffio_wfourcc(pb, "0001");
1311  avio_wb32(pb, 1); /* unknown */
1312  avio_wb32(pb, 0); /* unknown */
1313 
1314  avio_wb32(pb, 120); /* size */
1315  ffio_wfourcc(pb, "ARES");
1316  ffio_wfourcc(pb, "ARES");
1317  ffio_wfourcc(pb, "0001");
1318  avio_wb32(pb, cid); /* dnxhd cid, some id ? */
1319  if ( track->par->sample_aspect_ratio.num > 0
1320  && track->par->sample_aspect_ratio.den > 0)
1321  display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;
1322  avio_wb32(pb, display_width);
1323  /* values below are based on samples created with quicktime and avid codecs */
1324  if (interlaced) {
1325  avio_wb32(pb, track->par->height / 2);
1326  avio_wb32(pb, 2); /* unknown */
1327  avio_wb32(pb, 0); /* unknown */
1328  avio_wb32(pb, 4); /* unknown */
1329  } else {
1330  avio_wb32(pb, track->par->height);
1331  avio_wb32(pb, 1); /* unknown */
1332  avio_wb32(pb, 0); /* unknown */
1333  if (track->par->height == 1080)
1334  avio_wb32(pb, 5); /* unknown */
1335  else
1336  avio_wb32(pb, 6); /* unknown */
1337  }
1338  /* padding */
1339  for (i = 0; i < 10; i++)
1340  avio_wb64(pb, 0);
1341 
1342  return 0;
1343 }
1344 
1345 static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)
1346 {
1347  avio_wb32(pb, 12);
1348  ffio_wfourcc(pb, "DpxE");
1349  if (track->par->extradata_size >= 12 &&
1350  !memcmp(&track->par->extradata[4], "DpxE", 4)) {
1351  avio_wb32(pb, track->par->extradata[11]);
1352  } else {
1353  avio_wb32(pb, 1);
1354  }
1355  return 0;
1356 }
1357 
1359 {
1360  int tag;
1361 
1362  if (track->par->width == 720) { /* SD */
1363  if (track->par->height == 480) { /* NTSC */
1364  if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1365  else tag = MKTAG('d','v','c',' ');
1366  }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1367  else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1368  else tag = MKTAG('d','v','p','p');
1369  } else if (track->par->height == 720) { /* HD 720 line */
1370  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1371  else tag = MKTAG('d','v','h','p');
1372  } else if (track->par->height == 1080) { /* HD 1080 line */
1373  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1374  else tag = MKTAG('d','v','h','6');
1375  } else {
1376  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1377  return 0;
1378  }
1379 
1380  return tag;
1381 }
1382 
1384 {
1385  AVRational rate = st->avg_frame_rate;
1386 
1387 #if FF_API_LAVF_AVCTX
1389  rate = av_inv_q(st->codec->time_base);
1390  if (av_timecode_check_frame_rate(rate) < 0) {
1391  av_log(s, AV_LOG_DEBUG, "timecode: tbc=%d/%d invalid, fallback on %d/%d\n",
1392  rate.num, rate.den, st->avg_frame_rate.num, st->avg_frame_rate.den);
1393  rate = st->avg_frame_rate;
1394  }
1396 #endif
1397 
1398  return rate;
1399 }
1400 
1402 {
1403  AVRational rational_framerate = find_fps(s, st);
1404  int rate = 0;
1405  if (rational_framerate.den != 0)
1406  rate = av_q2d(rational_framerate);
1407  return rate;
1408 }
1409 
1411 {
1412  int tag = track->par->codec_tag;
1414  AVStream *st = track->st;
1415  int rate = defined_frame_rate(s, st);
1416 
1417  if (!tag)
1418  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1419 
1420  if (track->par->format == AV_PIX_FMT_YUV420P) {
1421  if (track->par->width == 1280 && track->par->height == 720) {
1422  if (!interlaced) {
1423  if (rate == 24) tag = MKTAG('x','d','v','4');
1424  else if (rate == 25) tag = MKTAG('x','d','v','5');
1425  else if (rate == 30) tag = MKTAG('x','d','v','1');
1426  else if (rate == 50) tag = MKTAG('x','d','v','a');
1427  else if (rate == 60) tag = MKTAG('x','d','v','9');
1428  }
1429  } else if (track->par->width == 1440 && track->par->height == 1080) {
1430  if (!interlaced) {
1431  if (rate == 24) tag = MKTAG('x','d','v','6');
1432  else if (rate == 25) tag = MKTAG('x','d','v','7');
1433  else if (rate == 30) tag = MKTAG('x','d','v','8');
1434  } else {
1435  if (rate == 25) tag = MKTAG('x','d','v','3');
1436  else if (rate == 30) tag = MKTAG('x','d','v','2');
1437  }
1438  } else if (track->par->width == 1920 && track->par->height == 1080) {
1439  if (!interlaced) {
1440  if (rate == 24) tag = MKTAG('x','d','v','d');
1441  else if (rate == 25) tag = MKTAG('x','d','v','e');
1442  else if (rate == 30) tag = MKTAG('x','d','v','f');
1443  } else {
1444  if (rate == 25) tag = MKTAG('x','d','v','c');
1445  else if (rate == 30) tag = MKTAG('x','d','v','b');
1446  }
1447  }
1448  } else if (track->par->format == AV_PIX_FMT_YUV422P) {
1449  if (track->par->width == 1280 && track->par->height == 720) {
1450  if (!interlaced) {
1451  if (rate == 24) tag = MKTAG('x','d','5','4');
1452  else if (rate == 25) tag = MKTAG('x','d','5','5');
1453  else if (rate == 30) tag = MKTAG('x','d','5','1');
1454  else if (rate == 50) tag = MKTAG('x','d','5','a');
1455  else if (rate == 60) tag = MKTAG('x','d','5','9');
1456  }
1457  } else if (track->par->width == 1920 && track->par->height == 1080) {
1458  if (!interlaced) {
1459  if (rate == 24) tag = MKTAG('x','d','5','d');
1460  else if (rate == 25) tag = MKTAG('x','d','5','e');
1461  else if (rate == 30) tag = MKTAG('x','d','5','f');
1462  } else {
1463  if (rate == 25) tag = MKTAG('x','d','5','c');
1464  else if (rate == 30) tag = MKTAG('x','d','5','b');
1465  }
1466  }
1467  }
1468 
1469  return tag;
1470 }
1471 
1473 {
1474  int tag = track->par->codec_tag;
1476  AVStream *st = track->st;
1477  int rate = defined_frame_rate(s, st);
1478 
1479  if (!tag)
1480  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1481 
1482  if (track->par->format == AV_PIX_FMT_YUV420P10) {
1483  if (track->par->width == 960 && track->par->height == 720) {
1484  if (!interlaced) {
1485  if (rate == 24) tag = MKTAG('a','i','5','p');
1486  else if (rate == 25) tag = MKTAG('a','i','5','q');
1487  else if (rate == 30) tag = MKTAG('a','i','5','p');
1488  else if (rate == 50) tag = MKTAG('a','i','5','q');
1489  else if (rate == 60) tag = MKTAG('a','i','5','p');
1490  }
1491  } else if (track->par->width == 1440 && track->par->height == 1080) {
1492  if (!interlaced) {
1493  if (rate == 24) tag = MKTAG('a','i','5','3');
1494  else if (rate == 25) tag = MKTAG('a','i','5','2');
1495  else if (rate == 30) tag = MKTAG('a','i','5','3');
1496  } else {
1497  if (rate == 50) tag = MKTAG('a','i','5','5');
1498  else if (rate == 60) tag = MKTAG('a','i','5','6');
1499  }
1500  }
1501  } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
1502  if (track->par->width == 1280 && track->par->height == 720) {
1503  if (!interlaced) {
1504  if (rate == 24) tag = MKTAG('a','i','1','p');
1505  else if (rate == 25) tag = MKTAG('a','i','1','q');
1506  else if (rate == 30) tag = MKTAG('a','i','1','p');
1507  else if (rate == 50) tag = MKTAG('a','i','1','q');
1508  else if (rate == 60) tag = MKTAG('a','i','1','p');
1509  }
1510  } else if (track->par->width == 1920 && track->par->height == 1080) {
1511  if (!interlaced) {
1512  if (rate == 24) tag = MKTAG('a','i','1','3');
1513  else if (rate == 25) tag = MKTAG('a','i','1','2');
1514  else if (rate == 30) tag = MKTAG('a','i','1','3');
1515  } else {
1516  if (rate == 25) tag = MKTAG('a','i','1','5');
1517  else if (rate == 50) tag = MKTAG('a','i','1','5');
1518  else if (rate == 60) tag = MKTAG('a','i','1','6');
1519  }
1520  } else if ( track->par->width == 4096 && track->par->height == 2160
1521  || track->par->width == 3840 && track->par->height == 2160
1522  || track->par->width == 2048 && track->par->height == 1080) {
1523  tag = MKTAG('a','i','v','x');
1524  }
1525  }
1526 
1527  return tag;
1528 }
1529 
1530 static const struct {
1532  uint32_t tag;
1533  unsigned bps;
1534 } mov_pix_fmt_tags[] = {
1535  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1536  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1537  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1538  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1539  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1540  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1541  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1542  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1543  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1544  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1545  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1546  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1547  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1548  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1549  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1550 };
1551 
1553 {
1554  int tag = MKTAG('A','V','d','n');
1555  if (track->par->profile != FF_PROFILE_UNKNOWN &&
1556  track->par->profile != FF_PROFILE_DNXHD)
1557  tag = MKTAG('A','V','d','h');
1558  return tag;
1559 }
1560 
1562 {
1563  int tag = track->par->codec_tag;
1564  int i;
1565  enum AVPixelFormat pix_fmt;
1566 
1567  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1568  if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
1569  tag = mov_pix_fmt_tags[i].tag;
1571  if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
1572  break;
1573  }
1574  }
1575 
1577  track->par->bits_per_coded_sample);
1578  if (tag == MKTAG('r','a','w',' ') &&
1579  track->par->format != pix_fmt &&
1580  track->par->format != AV_PIX_FMT_GRAY8 &&
1581  track->par->format != AV_PIX_FMT_NONE)
1582  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1583  av_get_pix_fmt_name(track->par->format));
1584  return tag;
1585 }
1586 
1587 static unsigned int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
1588 {
1589  unsigned int tag = track->par->codec_tag;
1590 
1591  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1592  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||
1593  track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||
1594  track->par->codec_id == AV_CODEC_ID_H263 ||
1595  track->par->codec_id == AV_CODEC_ID_H264 ||
1596  track->par->codec_id == AV_CODEC_ID_DNXHD ||
1597  track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1598  av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio
1599  if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)
1600  tag = mov_get_dv_codec_tag(s, track);
1601  else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)
1602  tag = mov_get_rawvideo_codec_tag(s, track);
1603  else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1604  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1605  else if (track->par->codec_id == AV_CODEC_ID_H264)
1606  tag = mov_get_h264_codec_tag(s, track);
1607  else if (track->par->codec_id == AV_CODEC_ID_DNXHD)
1608  tag = mov_get_dnxhd_codec_tag(s, track);
1609  else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
1611  if (!tag) { // if no mac fcc found, try with Microsoft tags
1613  if (tag)
1614  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1615  "the file may be unplayable!\n");
1616  }
1617  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
1619  if (!tag) { // if no mac fcc found, try with Microsoft tags
1620  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);
1621  if (ms_tag) {
1622  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1623  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1624  "the file may be unplayable!\n");
1625  }
1626  }
1627  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
1629  }
1630 
1631  return tag;
1632 }
1633 
1635  { AV_CODEC_ID_MJPEG, 0xD },
1636  { AV_CODEC_ID_PNG, 0xE },
1637  { AV_CODEC_ID_BMP, 0x1B },
1638  { AV_CODEC_ID_NONE, 0 },
1639 };
1640 
1641 static unsigned int validate_codec_tag(const AVCodecTag *const *tags,
1642  unsigned int tag, int codec_id)
1643 {
1644  int i;
1645 
1646  /**
1647  * Check that tag + id is in the table
1648  */
1649  for (i = 0; tags && tags[i]; i++) {
1650  const AVCodecTag *codec_tags = tags[i];
1651  while (codec_tags->id != AV_CODEC_ID_NONE) {
1652  if (avpriv_toupper4(codec_tags->tag) == avpriv_toupper4(tag) &&
1653  codec_tags->id == codec_id)
1654  return codec_tags->tag;
1655  codec_tags++;
1656  }
1657  }
1658  return 0;
1659 }
1660 
1661 static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
1662 {
1663  if (is_cover_image(track->st))
1664  return ff_codec_get_tag(codec_cover_image_tags, track->par->codec_id);
1665 
1666  if (track->mode == MODE_IPOD)
1667  if (!av_match_ext(s->url, "m4a") &&
1668  !av_match_ext(s->url, "m4v") &&
1669  !av_match_ext(s->url, "m4b"))
1670  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
1671  "Quicktime/Ipod might not play the file\n");
1672 
1673  if (track->mode == MODE_MOV) {
1674  return mov_get_codec_tag(s, track);
1675  } else
1676  return validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
1677  track->par->codec_id);
1678 }
1679 
1680 /** Write uuid atom.
1681  * Needed to make file play in iPods running newest firmware
1682  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1683  */
1685 {
1686  avio_wb32(pb, 28);
1687  ffio_wfourcc(pb, "uuid");
1688  avio_wb32(pb, 0x6b6840f2);
1689  avio_wb32(pb, 0x5f244fc5);
1690  avio_wb32(pb, 0xba39a51b);
1691  avio_wb32(pb, 0xcf0323f3);
1692  avio_wb32(pb, 0x0);
1693  return 28;
1694 }
1695 
1696 static const uint16_t fiel_data[] = {
1697  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1698 };
1699 
1700 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)
1701 {
1702  unsigned mov_field_order = 0;
1703  if (field_order < FF_ARRAY_ELEMS(fiel_data))
1704  mov_field_order = fiel_data[field_order];
1705  else
1706  return 0;
1707  avio_wb32(pb, 10);
1708  ffio_wfourcc(pb, "fiel");
1709  avio_wb16(pb, mov_field_order);
1710  return 10;
1711 }
1712 
1714 {
1715  int64_t pos = avio_tell(pb);
1716  avio_wb32(pb, 0); /* size */
1717  avio_wl32(pb, track->tag); // store it byteswapped
1718  avio_wb32(pb, 0); /* Reserved */
1719  avio_wb16(pb, 0); /* Reserved */
1720  avio_wb16(pb, 1); /* Data-reference index */
1721 
1722  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1723  mov_write_esds_tag(pb, track);
1724  else if (track->par->extradata_size)
1725  avio_write(pb, track->par->extradata, track->par->extradata_size);
1726 
1727  return update_size(pb, pos);
1728 }
1729 
1731 {
1732  int8_t stereo_mode;
1733 
1734  if (stereo_3d->flags != 0) {
1735  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);
1736  return 0;
1737  }
1738 
1739  switch (stereo_3d->type) {
1740  case AV_STEREO3D_2D:
1741  stereo_mode = 0;
1742  break;
1743  case AV_STEREO3D_TOPBOTTOM:
1744  stereo_mode = 1;
1745  break;
1747  stereo_mode = 2;
1748  break;
1749  default:
1750  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));
1751  return 0;
1752  }
1753  avio_wb32(pb, 13); /* size */
1754  ffio_wfourcc(pb, "st3d");
1755  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1756  avio_w8(pb, stereo_mode);
1757  return 13;
1758 }
1759 
1761 {
1762  int64_t sv3d_pos, svhd_pos, proj_pos;
1763  const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;
1764 
1765  if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
1766  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
1767  spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {
1768  av_log(s, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);
1769  return 0;
1770  }
1771 
1772  sv3d_pos = avio_tell(pb);
1773  avio_wb32(pb, 0); /* size */
1774  ffio_wfourcc(pb, "sv3d");
1775 
1776  svhd_pos = avio_tell(pb);
1777  avio_wb32(pb, 0); /* size */
1778  ffio_wfourcc(pb, "svhd");
1779  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1780  avio_put_str(pb, metadata_source);
1781  update_size(pb, svhd_pos);
1782 
1783  proj_pos = avio_tell(pb);
1784  avio_wb32(pb, 0); /* size */
1785  ffio_wfourcc(pb, "proj");
1786 
1787  avio_wb32(pb, 24); /* size */
1788  ffio_wfourcc(pb, "prhd");
1789  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1790  avio_wb32(pb, spherical_mapping->yaw);
1791  avio_wb32(pb, spherical_mapping->pitch);
1792  avio_wb32(pb, spherical_mapping->roll);
1793 
1794  switch (spherical_mapping->projection) {
1797  avio_wb32(pb, 28); /* size */
1798  ffio_wfourcc(pb, "equi");
1799  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1800  avio_wb32(pb, spherical_mapping->bound_top);
1801  avio_wb32(pb, spherical_mapping->bound_bottom);
1802  avio_wb32(pb, spherical_mapping->bound_left);
1803  avio_wb32(pb, spherical_mapping->bound_right);
1804  break;
1805  case AV_SPHERICAL_CUBEMAP:
1806  avio_wb32(pb, 20); /* size */
1807  ffio_wfourcc(pb, "cbmp");
1808  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1809  avio_wb32(pb, 0); /* layout */
1810  avio_wb32(pb, spherical_mapping->padding); /* padding */
1811  break;
1812  }
1813  update_size(pb, proj_pos);
1814 
1815  return update_size(pb, sv3d_pos);
1816 }
1817 
1818 static int mov_write_clap_tag(AVIOContext *pb, MOVTrack *track)
1819 {
1820  avio_wb32(pb, 40);
1821  ffio_wfourcc(pb, "clap");
1822  avio_wb32(pb, track->par->width); /* apertureWidth_N */
1823  avio_wb32(pb, 1); /* apertureWidth_D (= 1) */
1824  avio_wb32(pb, track->height); /* apertureHeight_N */
1825  avio_wb32(pb, 1); /* apertureHeight_D (= 1) */
1826  avio_wb32(pb, 0); /* horizOff_N (= 0) */
1827  avio_wb32(pb, 1); /* horizOff_D (= 1) */
1828  avio_wb32(pb, 0); /* vertOff_N (= 0) */
1829  avio_wb32(pb, 1); /* vertOff_D (= 1) */
1830  return 40;
1831 }
1832 
1833 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1834 {
1835  AVRational sar;
1836  av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,
1837  track->par->sample_aspect_ratio.den, INT_MAX);
1838 
1839  avio_wb32(pb, 16);
1840  ffio_wfourcc(pb, "pasp");
1841  avio_wb32(pb, sar.num);
1842  avio_wb32(pb, sar.den);
1843  return 16;
1844 }
1845 
1846 static int mov_write_gama_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track, double gamma)
1847 {
1848  uint32_t gama = 0;
1849  if (gamma <= 0.0) {
1850  gamma = avpriv_get_gamma_from_trc(track->par->color_trc);
1851  }
1852  av_log(s, AV_LOG_DEBUG, "gamma value %g\n", gamma);
1853 
1854  if (gamma > 1e-6) {
1855  gama = (uint32_t)lrint((double)(1<<16) * gamma);
1856  av_log(s, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);
1857 
1858  av_assert0(track->mode == MODE_MOV);
1859  avio_wb32(pb, 12);
1860  ffio_wfourcc(pb, "gama");
1861  avio_wb32(pb, gama);
1862  return 12;
1863  } else {
1864  av_log(s, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
1865  }
1866  return 0;
1867 }
1868 
1869 static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track)
1870 {
1871  int64_t pos = avio_tell(pb);
1872 
1873  // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
1874  // Ref (MP4): ISO/IEC 14496-12:2012
1875 
1876  if (track->par->color_primaries == AVCOL_PRI_UNSPECIFIED &&
1877  track->par->color_trc == AVCOL_TRC_UNSPECIFIED &&
1878  track->par->color_space == AVCOL_SPC_UNSPECIFIED) {
1879  if ((track->par->width >= 1920 && track->par->height >= 1080)
1880  || (track->par->width == 1280 && track->par->height == 720)) {
1881  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt709\n");
1883  } else if (track->par->width == 720 && track->height == 576) {
1884  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt470bg\n");
1886  } else if (track->par->width == 720 &&
1887  (track->height == 486 || track->height == 480)) {
1888  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming smpte170\n");
1890  } else {
1891  av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, unable to assume anything\n");
1892  }
1893  switch (track->par->color_primaries) {
1894  case AVCOL_PRI_BT709:
1895  track->par->color_trc = AVCOL_TRC_BT709;
1896  track->par->color_space = AVCOL_SPC_BT709;
1897  break;
1898  case AVCOL_PRI_SMPTE170M:
1899  case AVCOL_PRI_BT470BG:
1900  track->par->color_trc = AVCOL_TRC_BT709;
1902  break;
1903  }
1904  }
1905 
1906  /* We should only ever be called by MOV or MP4. */
1907  av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4);
1908 
1909  avio_wb32(pb, 0); /* size */
1910  ffio_wfourcc(pb, "colr");
1911  if (track->mode == MODE_MP4)
1912  ffio_wfourcc(pb, "nclx");
1913  else
1914  ffio_wfourcc(pb, "nclc");
1915  switch (track->par->color_primaries) {
1916  case AVCOL_PRI_BT709: avio_wb16(pb, 1); break;
1917  case AVCOL_PRI_BT470BG: avio_wb16(pb, 5); break;
1918  case AVCOL_PRI_SMPTE170M:
1919  case AVCOL_PRI_SMPTE240M: avio_wb16(pb, 6); break;
1920  case AVCOL_PRI_BT2020: avio_wb16(pb, 9); break;
1921  case AVCOL_PRI_SMPTE431: avio_wb16(pb, 11); break;
1922  case AVCOL_PRI_SMPTE432: avio_wb16(pb, 12); break;
1923  default: avio_wb16(pb, 2);
1924  }
1925  switch (track->par->color_trc) {
1926  case AVCOL_TRC_BT709: avio_wb16(pb, 1); break;
1927  case AVCOL_TRC_SMPTE170M: avio_wb16(pb, 1); break; // remapped
1928  case AVCOL_TRC_SMPTE240M: avio_wb16(pb, 7); break;
1929  case AVCOL_TRC_SMPTEST2084: avio_wb16(pb, 16); break;
1930  case AVCOL_TRC_SMPTE428: avio_wb16(pb, 17); break;
1931  case AVCOL_TRC_ARIB_STD_B67: avio_wb16(pb, 18); break;
1932  default: avio_wb16(pb, 2);
1933  }
1934  switch (track->par->color_space) {
1935  case AVCOL_SPC_BT709: avio_wb16(pb, 1); break;
1936  case AVCOL_SPC_BT470BG:
1937  case AVCOL_SPC_SMPTE170M: avio_wb16(pb, 6); break;
1938  case AVCOL_SPC_SMPTE240M: avio_wb16(pb, 7); break;
1939  case AVCOL_SPC_BT2020_NCL: avio_wb16(pb, 9); break;
1940  default: avio_wb16(pb, 2);
1941  }
1942 
1943  if (track->mode == MODE_MP4) {
1944  int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
1945  avio_w8(pb, full_range << 7);
1946  }
1947 
1948  return update_size(pb, pos);
1949 }
1950 
1951 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
1952 {
1953  AVDictionaryEntry *encoder;
1954  int xdcam_res = (track->par->width == 1280 && track->par->height == 720)
1955  || (track->par->width == 1440 && track->par->height == 1080)
1956  || (track->par->width == 1920 && track->par->height == 1080);
1957 
1958  if (track->mode == MODE_MOV &&
1959  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
1960  av_strlcpy(compressor_name, encoder->value, 32);
1961  } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
1963  AVStream *st = track->st;
1964  int rate = defined_frame_rate(NULL, st);
1965  av_strlcatf(compressor_name, len, "XDCAM");
1966  if (track->par->format == AV_PIX_FMT_YUV422P) {
1967  av_strlcatf(compressor_name, len, " HD422");
1968  } else if(track->par->width == 1440) {
1969  av_strlcatf(compressor_name, len, " HD");
1970  } else
1971  av_strlcatf(compressor_name, len, " EX");
1972 
1973  av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');
1974 
1975  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
1976  }
1977 }
1978 
1980 {
1981  int64_t pos = avio_tell(pb);
1982  char compressor_name[32] = { 0 };
1983  int avid = 0;
1984 
1985  int uncompressed_ycbcr = ((track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVY422)
1986  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_YUYV422)
1987  || track->par->codec_id == AV_CODEC_ID_V308
1988  || track->par->codec_id == AV_CODEC_ID_V408
1989  || track->par->codec_id == AV_CODEC_ID_V410
1990  || track->par->codec_id == AV_CODEC_ID_V210);
1991 
1992  avio_wb32(pb, 0); /* size */
1993  if (mov->encryption_scheme != MOV_ENC_NONE) {
1994  ffio_wfourcc(pb, "encv");
1995  } else {
1996  avio_wl32(pb, track->tag); // store it byteswapped
1997  }
1998  avio_wb32(pb, 0); /* Reserved */
1999  avio_wb16(pb, 0); /* Reserved */
2000  avio_wb16(pb, 1); /* Data-reference index */
2001 
2002  if (uncompressed_ycbcr) {
2003  avio_wb16(pb, 2); /* Codec stream version */
2004  } else {
2005  avio_wb16(pb, 0); /* Codec stream version */
2006  }
2007  avio_wb16(pb, 0); /* Codec stream revision (=0) */
2008  if (track->mode == MODE_MOV) {
2009  ffio_wfourcc(pb, "FFMP"); /* Vendor */
2010  if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO || uncompressed_ycbcr) {
2011  avio_wb32(pb, 0); /* Temporal Quality */
2012  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
2013  } else {
2014  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
2015  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
2016  }
2017  } else {
2018  avio_wb32(pb, 0); /* Reserved */
2019  avio_wb32(pb, 0); /* Reserved */
2020  avio_wb32(pb, 0); /* Reserved */
2021  }
2022  avio_wb16(pb, track->par->width); /* Video width */
2023  avio_wb16(pb, track->height); /* Video height */
2024  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
2025  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
2026  avio_wb32(pb, 0); /* Data size (= 0) */
2027  avio_wb16(pb, 1); /* Frame count (= 1) */
2028 
2029  /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
2030  find_compressor(compressor_name, 32, track);
2031  avio_w8(pb, strlen(compressor_name));
2032  avio_write(pb, compressor_name, 31);
2033 
2034  if (track->mode == MODE_MOV &&
2035  (track->par->codec_id == AV_CODEC_ID_V410 || track->par->codec_id == AV_CODEC_ID_V210))
2036  avio_wb16(pb, 0x18);
2037  else if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
2038  avio_wb16(pb, track->par->bits_per_coded_sample |
2039  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
2040  else
2041  avio_wb16(pb, 0x18); /* Reserved */
2042 
2043  if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
2044  int pal_size = 1 << track->par->bits_per_coded_sample;
2045  int i;
2046  avio_wb16(pb, 0); /* Color table ID */
2047  avio_wb32(pb, 0); /* Color table seed */
2048  avio_wb16(pb, 0x8000); /* Color table flags */
2049  avio_wb16(pb, pal_size - 1); /* Color table size (zero-relative) */
2050  for (i = 0; i < pal_size; i++) {
2051  uint32_t rgb = track->palette[i];
2052  uint16_t r = (rgb >> 16) & 0xff;
2053  uint16_t g = (rgb >> 8) & 0xff;
2054  uint16_t b = rgb & 0xff;
2055  avio_wb16(pb, 0);
2056  avio_wb16(pb, (r << 8) | r);
2057  avio_wb16(pb, (g << 8) | g);
2058  avio_wb16(pb, (b << 8) | b);
2059  }
2060  } else
2061  avio_wb16(pb, 0xffff); /* Reserved */
2062 
2063  if (track->tag == MKTAG('m','p','4','v'))
2064  mov_write_esds_tag(pb, track);
2065  else if (track->par->codec_id == AV_CODEC_ID_H263)
2066  mov_write_d263_tag(pb);
2067  else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
2068  track->par->codec_id == AV_CODEC_ID_SVQ3) {
2069  mov_write_extradata_tag(pb, track);
2070  avio_wb32(pb, 0);
2071  } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
2072  mov_write_avid_tag(pb, track);
2073  avid = 1;
2074  } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
2075  mov_write_hvcc_tag(pb, track);
2076  else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
2077  mov_write_avcc_tag(pb, track);
2078  if (track->mode == MODE_IPOD)
2080  } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
2081  mov_write_vpcc_tag(mov->fc, pb, track);
2082  } else if (track->par->codec_id == AV_CODEC_ID_AV1) {
2083  mov_write_av1c_tag(pb, track);
2084  } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
2085  mov_write_dvc1_tag(pb, track);
2086  else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
2087  track->par->codec_id == AV_CODEC_ID_VP6A) {
2088  /* Don't write any potential extradata here - the cropping
2089  * is signalled via the normal width/height fields. */
2090  } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
2091  if (track->par->codec_tag == MKTAG('R','1','0','k'))
2092  mov_write_dpxe_tag(pb, track);
2093  } else if (track->vos_len > 0)
2094  mov_write_glbl_tag(pb, track);
2095 
2096  if (track->par->codec_id != AV_CODEC_ID_H264 &&
2097  track->par->codec_id != AV_CODEC_ID_MPEG4 &&
2098  track->par->codec_id != AV_CODEC_ID_DNXHD) {
2099  int field_order = track->par->field_order;
2100 
2101 #if FF_API_LAVF_AVCTX
2103  if (field_order != track->st->codec->field_order && track->st->codec->field_order != AV_FIELD_UNKNOWN)
2104  field_order = track->st->codec->field_order;
2106 #endif
2107 
2108  if (field_order != AV_FIELD_UNKNOWN)
2109  mov_write_fiel_tag(pb, track, field_order);
2110  }
2111 
2112  if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
2113  if (track->mode == MODE_MOV)
2114  mov_write_gama_tag(s, pb, track, mov->gamma);
2115  else
2116  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
2117  }
2118  if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
2119  if (track->mode == MODE_MOV || track->mode == MODE_MP4)
2120  mov_write_colr_tag(pb, track);
2121  else
2122  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4.\n");
2123  }
2124 
2125  if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2128 
2129  if (stereo_3d)
2130  mov_write_st3d_tag(s, pb, stereo_3d);
2131  if (spherical_mapping)
2132  mov_write_sv3d_tag(mov->fc, pb, spherical_mapping);
2133  }
2134 
2135  if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
2136  mov_write_pasp_tag(pb, track);
2137  }
2138 
2139  if (uncompressed_ycbcr){
2140  mov_write_clap_tag(pb, track);
2141  }
2142 
2143  if (mov->encryption_scheme != MOV_ENC_NONE) {
2144  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
2145  }
2146 
2147  /* extra padding for avid stsd */
2148  /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
2149  if (avid)
2150  avio_wb32(pb, 0);
2151 
2152  return update_size(pb, pos);
2153 }
2154 
2155 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
2156 {
2157  int64_t pos = avio_tell(pb);
2158  avio_wb32(pb, 0); /* size */
2159  ffio_wfourcc(pb, "rtp ");
2160  avio_wb32(pb, 0); /* Reserved */
2161  avio_wb16(pb, 0); /* Reserved */
2162  avio_wb16(pb, 1); /* Data-reference index */
2163 
2164  avio_wb16(pb, 1); /* Hint track version */
2165  avio_wb16(pb, 1); /* Highest compatible version */
2166  avio_wb32(pb, track->max_packet_size); /* Max packet size */
2167 
2168  avio_wb32(pb, 12); /* size */
2169  ffio_wfourcc(pb, "tims");
2170  avio_wb32(pb, track->timescale);
2171 
2172  return update_size(pb, pos);
2173 }
2174 
2175 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
2176 {
2177  uint64_t str_size =strlen(reel_name);
2178  int64_t pos = avio_tell(pb);
2179 
2180  if (str_size >= UINT16_MAX){
2181  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
2182  avio_wb16(pb, 0);
2183  return AVERROR(EINVAL);
2184  }
2185 
2186  avio_wb32(pb, 0); /* size */
2187  ffio_wfourcc(pb, "name"); /* Data format */
2188  avio_wb16(pb, str_size); /* string size */
2189  avio_wb16(pb, track->language); /* langcode */
2190  avio_write(pb, reel_name, str_size); /* reel name */
2191  return update_size(pb,pos);
2192 }
2193 
2194 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
2195 {
2196  int64_t pos = avio_tell(pb);
2197 #if 1
2198  int frame_duration;
2199  int nb_frames;
2200  AVDictionaryEntry *t = NULL;
2201 
2202  if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {
2203 #if FF_API_LAVF_AVCTX
2205  frame_duration = av_rescale(track->timescale, track->st->codec->time_base.num, track->st->codec->time_base.den);
2206  nb_frames = ROUNDED_DIV(track->st->codec->time_base.den, track->st->codec->time_base.num);
2208 #else
2209  av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");
2210  return AVERROR(EINVAL);
2211 #endif
2212  } else {
2213  frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);
2214  nb_frames = ROUNDED_DIV(track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);
2215  }
2216 
2217  if (nb_frames > 255) {
2218  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
2219  return AVERROR(EINVAL);
2220  }
2221 
2222  avio_wb32(pb, 0); /* size */
2223  ffio_wfourcc(pb, "tmcd"); /* Data format */
2224  avio_wb32(pb, 0); /* Reserved */
2225  avio_wb32(pb, 1); /* Data reference index */
2226  avio_wb32(pb, 0); /* Flags */
2227  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
2228  avio_wb32(pb, track->timescale); /* Timescale */
2229  avio_wb32(pb, frame_duration); /* Frame duration */
2230  avio_w8(pb, nb_frames); /* Number of frames */
2231  avio_w8(pb, 0); /* Reserved */
2232 
2233  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
2234  if (t && utf8len(t->value) && track->mode != MODE_MP4)
2235  mov_write_source_reference_tag(pb, track, t->value);
2236  else
2237  avio_wb16(pb, 0); /* zero size */
2238 #else
2239 
2240  avio_wb32(pb, 0); /* size */
2241  ffio_wfourcc(pb, "tmcd"); /* Data format */
2242  avio_wb32(pb, 0); /* Reserved */
2243  avio_wb32(pb, 1); /* Data reference index */
2244  if (track->par->extradata_size)
2245  avio_write(pb, track->par->extradata, track->par->extradata_size);
2246 #endif
2247  return update_size(pb, pos);
2248 }
2249 
2250 static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)
2251 {
2252  int64_t pos = avio_tell(pb);
2253  avio_wb32(pb, 0); /* size */
2254  ffio_wfourcc(pb, "gpmd");
2255  avio_wb32(pb, 0); /* Reserved */
2256  avio_wb16(pb, 0); /* Reserved */
2257  avio_wb16(pb, 1); /* Data-reference index */
2258  avio_wb32(pb, 0); /* Reserved */
2259  return update_size(pb, pos);
2260 }
2261 
2263 {
2264  int64_t pos = avio_tell(pb);
2265  int ret = 0;
2266  avio_wb32(pb, 0); /* size */
2267  ffio_wfourcc(pb, "stsd");
2268  avio_wb32(pb, 0); /* version & flags */
2269  avio_wb32(pb, 1); /* entry count */
2270  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2271  ret = mov_write_video_tag(s, pb, mov, track);
2272  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2273  ret = mov_write_audio_tag(s, pb, mov, track);
2274  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
2275  ret = mov_write_subtitle_tag(pb, track);
2276  else if (track->par->codec_tag == MKTAG('r','t','p',' '))
2277  ret = mov_write_rtp_tag(pb, track);
2278  else if (track->par->codec_tag == MKTAG('t','m','c','d'))
2279  ret = mov_write_tmcd_tag(pb, track);
2280  else if (track->par->codec_tag == MKTAG('g','p','m','d'))
2281  ret = mov_write_gpmd_tag(pb, track);
2282 
2283  if (ret < 0)
2284  return ret;
2285 
2286  return update_size(pb, pos);
2287 }
2288 
2290 {
2291  MOVMuxContext *mov = s->priv_data;
2292  MOVStts *ctts_entries;
2293  uint32_t entries = 0;
2294  uint32_t atom_size;
2295  int i;
2296 
2297  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
2298  if (!ctts_entries)
2299  return AVERROR(ENOMEM);
2300  ctts_entries[0].count = 1;
2301  ctts_entries[0].duration = track->cluster[0].cts;
2302  for (i = 1; i < track->entry; i++) {
2303  if (track->cluster[i].cts == ctts_entries[entries].duration) {
2304  ctts_entries[entries].count++; /* compress */
2305  } else {
2306  entries++;
2307  ctts_entries[entries].duration = track->cluster[i].cts;
2308  ctts_entries[entries].count = 1;
2309  }
2310  }
2311  entries++; /* last one */
2312  atom_size = 16 + (entries * 8);
2313  avio_wb32(pb, atom_size); /* size */
2314  ffio_wfourcc(pb, "ctts");
2316  avio_w8(pb, 1); /* version */
2317  else
2318  avio_w8(pb, 0); /* version */
2319  avio_wb24(pb, 0); /* flags */
2320  avio_wb32(pb, entries); /* entry count */
2321  for (i = 0; i < entries; i++) {
2322  avio_wb32(pb, ctts_entries[i].count);
2323  avio_wb32(pb, ctts_entries[i].duration);
2324  }
2325  av_free(ctts_entries);
2326  return atom_size;
2327 }
2328 
2329 /* Time to sample atom */
2330 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
2331 {
2332  MOVStts *stts_entries = NULL;
2333  uint32_t entries = -1;
2334  uint32_t atom_size;
2335  int i;
2336 
2337  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
2338  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
2339  if (!stts_entries)
2340  return AVERROR(ENOMEM);
2341  stts_entries[0].count = track->sample_count;
2342  stts_entries[0].duration = 1;
2343  entries = 1;
2344  } else {
2345  if (track->entry) {
2346  stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */
2347  if (!stts_entries)
2348  return AVERROR(ENOMEM);
2349  }
2350  for (i = 0; i < track->entry; i++) {
2351  int duration = get_cluster_duration(track, i);
2352  if (i && duration == stts_entries[entries].duration) {
2353  stts_entries[entries].count++; /* compress */
2354  } else {
2355  entries++;
2356  stts_entries[entries].duration = duration;
2357  stts_entries[entries].count = 1;
2358  }
2359  }
2360  entries++; /* last one */
2361  }
2362  atom_size = 16 + (entries * 8);
2363  avio_wb32(pb, atom_size); /* size */
2364  ffio_wfourcc(pb, "stts");
2365  avio_wb32(pb, 0); /* version & flags */
2366  avio_wb32(pb, entries); /* entry count */
2367  for (i = 0; i < entries; i++) {
2368  avio_wb32(pb, stts_entries[i].count);
2369  avio_wb32(pb, stts_entries[i].duration);
2370  }
2371  av_free(stts_entries);
2372  return atom_size;
2373 }
2374 
2376 {
2377  avio_wb32(pb, 28); /* size */
2378  ffio_wfourcc(pb, "dref");
2379  avio_wb32(pb, 0); /* version & flags */
2380  avio_wb32(pb, 1); /* entry count */
2381 
2382  avio_wb32(pb, 0xc); /* size */
2383  //FIXME add the alis and rsrc atom
2384  ffio_wfourcc(pb, "url ");
2385  avio_wb32(pb, 1); /* version & flags */
2386 
2387  return 28;
2388 }
2389 
2391 {
2392  struct sgpd_entry {
2393  int count;
2394  int16_t roll_distance;
2395  int group_description_index;
2396  };
2397 
2398  struct sgpd_entry *sgpd_entries = NULL;
2399  int entries = -1;
2400  int group = 0;
2401  int i, j;
2402 
2403  const int OPUS_SEEK_PREROLL_MS = 80;
2404  int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,
2405  (AVRational){1, 1000},
2406  (AVRational){1, 48000});
2407 
2408  if (!track->entry)
2409  return 0;
2410 
2411  sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));
2412  if (!sgpd_entries)
2413  return AVERROR(ENOMEM);
2414 
2416 
2417  if (track->par->codec_id == AV_CODEC_ID_OPUS) {
2418  for (i = 0; i < track->entry; i++) {
2419  int roll_samples_remaining = roll_samples;
2420  int distance = 0;
2421  for (j = i - 1; j >= 0; j--) {
2422  roll_samples_remaining -= get_cluster_duration(track, j);
2423  distance++;
2424  if (roll_samples_remaining <= 0)
2425  break;
2426  }
2427  /* We don't have enough preceeding samples to compute a valid
2428  roll_distance here, so this sample can't be independently
2429  decoded. */
2430  if (roll_samples_remaining > 0)
2431  distance = 0;
2432  /* Verify distance is a maximum of 32 (2.5ms) packets. */
2433  if (distance > 32)
2434  return AVERROR_INVALIDDATA;
2435  if (i && distance == sgpd_entries[entries].roll_distance) {
2436  sgpd_entries[entries].count++;
2437  } else {
2438  entries++;
2439  sgpd_entries[entries].count = 1;
2440  sgpd_entries[entries].roll_distance = distance;
2441  sgpd_entries[entries].group_description_index = distance ? ++group : 0;
2442  }
2443  }
2444  } else {
2445  entries++;
2446  sgpd_entries[entries].count = track->sample_count;
2447  sgpd_entries[entries].roll_distance = 1;
2448  sgpd_entries[entries].group_description_index = ++group;
2449  }
2450  entries++;
2451 
2452  if (!group) {
2453  av_free(sgpd_entries);
2454  return 0;
2455  }
2456 
2457  /* Write sgpd tag */
2458  avio_wb32(pb, 24 + (group * 2)); /* size */
2459  ffio_wfourcc(pb, "sgpd");
2460  avio_wb32(pb, 1 << 24); /* fullbox */
2461  ffio_wfourcc(pb, "roll");
2462  avio_wb32(pb, 2); /* default_length */
2463  avio_wb32(pb, group); /* entry_count */
2464  for (i = 0; i < entries; i++) {
2465  if (sgpd_entries[i].group_description_index) {
2466  avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */
2467  }
2468  }
2469 
2470  /* Write sbgp tag */
2471  avio_wb32(pb, 20 + (entries * 8)); /* size */
2472  ffio_wfourcc(pb, "sbgp");
2473  avio_wb32(pb, 0); /* fullbox */
2474  ffio_wfourcc(pb, "roll");
2475  avio_wb32(pb, entries); /* entry_count */
2476  for (i = 0; i < entries; i++) {
2477  avio_wb32(pb, sgpd_entries[i].count); /* sample_count */
2478  avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */
2479  }
2480 
2481  av_free(sgpd_entries);
2482  return 0;
2483 }
2484 
2486 {
2487  int64_t pos = avio_tell(pb);
2488  int ret = 0;
2489 
2490  avio_wb32(pb, 0); /* size */
2491  ffio_wfourcc(pb, "stbl");
2492  if ((ret = mov_write_stsd_tag(s, pb, mov, track)) < 0)
2493  return ret;
2494  mov_write_stts_tag(pb, track);
2495  if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2496  track->par->codec_id == AV_CODEC_ID_TRUEHD ||
2498  track->par->codec_tag == MKTAG('r','t','p',' ')) &&
2499  track->has_keyframes && track->has_keyframes < track->entry)
2500  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
2501  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && track->has_disposable)
2502  mov_write_sdtp_tag(pb, track);
2503  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
2505  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
2506  track->flags & MOV_TRACK_CTTS && track->entry) {
2507 
2508  if ((ret = mov_write_ctts_tag(s, pb, track)) < 0)
2509  return ret;
2510  }
2511  mov_write_stsc_tag(pb, track);
2512  mov_write_stsz_tag(pb, track);
2513  mov_write_stco_tag(pb, track);
2514  if (track->cenc.aes_ctr) {
2515  ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);
2516  }
2517  if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {
2518  mov_preroll_write_stbl_atoms(pb, track);
2519  }
2520  return update_size(pb, pos);
2521 }
2522 
2524 {
2525  int64_t pos = avio_tell(pb);
2526  avio_wb32(pb, 0); /* size */
2527  ffio_wfourcc(pb, "dinf");
2528  mov_write_dref_tag(pb);
2529  return update_size(pb, pos);
2530 }
2531 
2533 {
2534  avio_wb32(pb, 12);
2535  ffio_wfourcc(pb, "nmhd");
2536  avio_wb32(pb, 0);
2537  return 12;
2538 }
2539 
2540 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
2541 {
2542  int64_t pos = avio_tell(pb);
2543  const char *font = "Lucida Grande";
2544  avio_wb32(pb, 0); /* size */
2545  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
2546  avio_wb32(pb, 0); /* version & flags */
2547  avio_wb16(pb, 0); /* text font */
2548  avio_wb16(pb, 0); /* text face */
2549  avio_wb16(pb, 12); /* text size */
2550  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
2551  avio_wb16(pb, 0x0000); /* text color (red) */
2552  avio_wb16(pb, 0x0000); /* text color (green) */
2553  avio_wb16(pb, 0x0000); /* text color (blue) */
2554  avio_wb16(pb, 0xffff); /* background color (red) */
2555  avio_wb16(pb, 0xffff); /* background color (green) */
2556  avio_wb16(pb, 0xffff); /* background color (blue) */
2557  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
2558  avio_write(pb, font, strlen(font)); /* font name */
2559  return update_size(pb, pos);
2560 }
2561 
2562 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
2563 {
2564  int64_t pos = avio_tell(pb);
2565  avio_wb32(pb, 0); /* size */
2566  ffio_wfourcc(pb, "gmhd");
2567  avio_wb32(pb, 0x18); /* gmin size */
2568  ffio_wfourcc(pb, "gmin");/* generic media info */
2569  avio_wb32(pb, 0); /* version & flags */
2570  avio_wb16(pb, 0x40); /* graphics mode = */
2571  avio_wb16(pb, 0x8000); /* opColor (r?) */
2572  avio_wb16(pb, 0x8000); /* opColor (g?) */
2573  avio_wb16(pb, 0x8000); /* opColor (b?) */
2574  avio_wb16(pb, 0); /* balance */
2575  avio_wb16(pb, 0); /* reserved */
2576 
2577  /*
2578  * This special text atom is required for
2579  * Apple Quicktime chapters. The contents
2580  * don't appear to be documented, so the
2581  * bytes are copied verbatim.
2582  */
2583  if (track->tag != MKTAG('c','6','0','8')) {
2584  avio_wb32(pb, 0x2C); /* size */
2585  ffio_wfourcc(pb, "text");
2586  avio_wb16(pb, 0x01);
2587  avio_wb32(pb, 0x00);
2588  avio_wb32(pb, 0x00);
2589  avio_wb32(pb, 0x00);
2590  avio_wb32(pb, 0x01);
2591  avio_wb32(pb, 0x00);
2592  avio_wb32(pb, 0x00);
2593  avio_wb32(pb, 0x00);
2594  avio_wb32(pb, 0x00004000);
2595  avio_wb16(pb, 0x0000);
2596  }
2597 
2598  if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2599  int64_t tmcd_pos = avio_tell(pb);
2600  avio_wb32(pb, 0); /* size */
2601  ffio_wfourcc(pb, "tmcd");
2602  mov_write_tcmi_tag(pb, track);
2603  update_size(pb, tmcd_pos);
2604  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2605  int64_t gpmd_pos = avio_tell(pb);
2606  avio_wb32(pb, 0); /* size */
2607  ffio_wfourcc(pb, "gpmd");
2608  avio_wb32(pb, 0); /* version */
2609  update_size(pb, gpmd_pos);
2610  }
2611  return update_size(pb, pos);
2612 }
2613 
2615 {
2616  avio_wb32(pb, 16); /* size */
2617  ffio_wfourcc(pb, "smhd");
2618  avio_wb32(pb, 0); /* version & flags */
2619  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
2620  avio_wb16(pb, 0); /* reserved */
2621  return 16;
2622 }
2623 
2625 {
2626  avio_wb32(pb, 0x14); /* size (always 0x14) */
2627  ffio_wfourcc(pb, "vmhd");
2628  avio_wb32(pb, 0x01); /* version & flags */
2629  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
2630  return 0x14;
2631 }
2632 
2633 static int is_clcp_track(MOVTrack *track)
2634 {
2635  return track->tag == MKTAG('c','7','0','8') ||
2636  track->tag == MKTAG('c','6','0','8');
2637 }
2638 
2640 {
2641  MOVMuxContext *mov = s->priv_data;
2642  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
2643  int64_t pos = avio_tell(pb);
2644 
2645  hdlr = "dhlr";
2646  hdlr_type = "url ";
2647  descr = "DataHandler";
2648 
2649  if (track) {
2650  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
2651  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
2652  hdlr_type = "vide";
2653  descr = "VideoHandler";
2654  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
2655  hdlr_type = "soun";
2656  descr = "SoundHandler";
2657  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2658  if (is_clcp_track(track)) {
2659  hdlr_type = "clcp";
2660  descr = "ClosedCaptionHandler";
2661  } else {
2662  if (track->tag == MKTAG('t','x','3','g')) {
2663  hdlr_type = "sbtl";
2664  } else if (track->tag == MKTAG('m','p','4','s')) {
2665  hdlr_type = "subp";
2666  } else {
2667  hdlr_type = "text";
2668  }
2669  descr = "SubtitleHandler";
2670  }
2671  } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
2672  hdlr_type = "hint";
2673  descr = "HintHandler";
2674  } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2675  hdlr_type = "tmcd";
2676  descr = "TimeCodeHandler";
2677  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2678  hdlr_type = "meta";
2679  descr = "GoPro MET"; // GoPro Metadata
2680  } else {
2682  "Unknown hldr_type for %s, writing dummy values\n",
2683  av_fourcc2str(track->par->codec_tag));
2684  }
2685  if (track->st) {
2686  // hdlr.name is used by some players to identify the content title
2687  // of the track. So if an alternate handler description is
2688  // specified, use it.
2689  AVDictionaryEntry *t;
2690  t = av_dict_get(track->st->metadata, "handler_name", NULL, 0);
2691  if (t && utf8len(t->value))
2692  descr = t->value;
2693  }
2694  }
2695 
2696  if (mov->empty_hdlr_name) /* expressly allowed by QTFF and not prohibited in ISO 14496-12 8.4.3.3 */
2697  descr = "";
2698 
2699  avio_wb32(pb, 0); /* size */
2700  ffio_wfourcc(pb, "hdlr");
2701  avio_wb32(pb, 0); /* Version & flags */
2702  avio_write(pb, hdlr, 4); /* handler */
2703  ffio_wfourcc(pb, hdlr_type); /* handler type */
2704  avio_wb32(pb, 0); /* reserved */
2705  avio_wb32(pb, 0); /* reserved */
2706  avio_wb32(pb, 0); /* reserved */
2707  if (!track || track->mode == MODE_MOV)
2708  avio_w8(pb, strlen(descr)); /* pascal string */
2709  avio_write(pb, descr, strlen(descr)); /* handler description */
2710  if (track && track->mode != MODE_MOV)
2711  avio_w8(pb, 0); /* c string */
2712  return update_size(pb, pos);
2713 }
2714 
2716 {
2717  /* This atom must be present, but leaving the values at zero
2718  * seems harmless. */
2719  avio_wb32(pb, 28); /* size */
2720  ffio_wfourcc(pb, "hmhd");
2721  avio_wb32(pb, 0); /* version, flags */
2722  avio_wb16(pb, 0); /* maxPDUsize */
2723  avio_wb16(pb, 0); /* avgPDUsize */
2724  avio_wb32(pb, 0); /* maxbitrate */
2725  avio_wb32(pb, 0); /* avgbitrate */
2726  avio_wb32(pb, 0); /* reserved */
2727  return 28;
2728 }
2729 
2731 {
2732  int64_t pos = avio_tell(pb);
2733  int ret;
2734 
2735  avio_wb32(pb, 0); /* size */
2736  ffio_wfourcc(pb, "minf");
2737  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2738  mov_write_vmhd_tag(pb);
2739  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2740  mov_write_smhd_tag(pb);
2741  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2742  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
2743  mov_write_gmhd_tag(pb, track);
2744  } else {
2745  mov_write_nmhd_tag(pb);
2746  }
2747  } else if (track->tag == MKTAG('r','t','p',' ')) {
2748  mov_write_hmhd_tag(pb);
2749  } else if (track->tag == MKTAG('t','m','c','d')) {
2750  if (track->mode != MODE_MOV)
2751  mov_write_nmhd_tag(pb);
2752  else
2753  mov_write_gmhd_tag(pb, track);
2754  } else if (track->tag == MKTAG('g','p','m','d')) {
2755  mov_write_gmhd_tag(pb, track);
2756  }
2757  if (track->mode == MODE_MOV) /* ISO 14496-12 8.4.3.1 specifies hdlr only within mdia or meta boxes */
2758  mov_write_hdlr_tag(s, pb, NULL);
2759  mov_write_dinf_tag(pb);
2760  if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
2761  return ret;
2762  return update_size(pb, pos);
2763 }
2764 
2765 static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
2766 {
2767  if (track->tag == MKTAG('t','m','c','d')) {
2768  // tmcd tracks gets track_duration set in mov_write_moov_tag from
2769  // another track's duration, while the end_pts may be left at zero.
2770  // Calculate the pts duration for that track instead.
2771  return av_rescale(calc_pts_duration(mov, &mov->tracks[track->src_track]),
2772  track->timescale, mov->tracks[track->src_track].timescale);
2773  }
2774  if (track->end_pts != AV_NOPTS_VALUE &&
2775  track->start_dts != AV_NOPTS_VALUE &&
2776  track->start_cts != AV_NOPTS_VALUE) {
2777  return track->end_pts - (track->start_dts + track->start_cts);
2778  }
2779  return track->track_duration;
2780 }
2781 
2783  MOVTrack *track)
2784 {
2785  int64_t duration = calc_pts_duration(mov, track);
2786  int version = duration < INT32_MAX ? 0 : 1;
2787 
2788  if (track->mode == MODE_ISM)
2789  version = 1;
2790 
2791  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
2792  ffio_wfourcc(pb, "mdhd");
2793  avio_w8(pb, version);
2794  avio_wb24(pb, 0); /* flags */
2795  if (version == 1) {
2796  avio_wb64(pb, track->time);
2797  avio_wb64(pb, track->time);
2798  } else {
2799  avio_wb32(pb, track->time); /* creation time */
2800  avio_wb32(pb, track->time); /* modification time */
2801  }
2802  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
2803  if (!track->entry && mov->mode == MODE_ISM)
2804  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2805  else if (!track->entry)
2806  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2807  else
2808  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration); /* duration */
2809  avio_wb16(pb, track->language); /* language */
2810  avio_wb16(pb, 0); /* reserved (quality) */
2811 
2812  if (version != 0 && track->mode == MODE_MOV) {
2814  "FATAL error, file duration too long for timebase, this file will not be\n"
2815  "playable with QuickTime. Choose a different timebase with "
2816  "-video_track_timescale or a different container format\n");
2817  }
2818 
2819  return 32;
2820 }
2821 
2823  MOVMuxContext *mov, MOVTrack *track)
2824 {
2825  int64_t pos = avio_tell(pb);
2826  int ret;
2827 
2828  avio_wb32(pb, 0); /* size */
2829  ffio_wfourcc(pb, "mdia");
2830  mov_write_mdhd_tag(pb, mov, track);
2831  mov_write_hdlr_tag(s, pb, track);
2832  if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)
2833  return ret;
2834  return update_size(pb, pos);
2835 }
2836 
2837 /* transformation matrix
2838  |a b u|
2839  |c d v|
2840  |tx ty w| */
2841 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
2842  int16_t d, int16_t tx, int16_t ty)
2843 {
2844  avio_wb32(pb, a << 16); /* 16.16 format */
2845  avio_wb32(pb, b << 16); /* 16.16 format */
2846  avio_wb32(pb, 0); /* u in 2.30 format */
2847  avio_wb32(pb, c << 16); /* 16.16 format */
2848  avio_wb32(pb, d << 16); /* 16.16 format */
2849  avio_wb32(pb, 0); /* v in 2.30 format */
2850  avio_wb32(pb, tx << 16); /* 16.16 format */
2851  avio_wb32(pb, ty << 16); /* 16.16 format */
2852  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
2853 }
2854 
2856  MOVTrack *track, AVStream *st)
2857 {
2858  int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
2859  MOV_TIMESCALE, track->timescale,
2860  AV_ROUND_UP);
2861  int version = duration < INT32_MAX ? 0 : 1;
2863  int rotation = 0;
2864  int group = 0;
2865 
2866  uint32_t *display_matrix = NULL;
2867  int display_matrix_size, i;
2868 
2869  if (st) {
2870  if (mov->per_stream_grouping)
2871  group = st->index;
2872  else
2873  group = st->codecpar->codec_type;
2874 
2875  display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
2876  &display_matrix_size);
2877  if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
2878  display_matrix = NULL;
2879  }
2880 
2881  if (track->flags & MOV_TRACK_ENABLED)
2882  flags |= MOV_TKHD_FLAG_ENABLED;
2883 
2884  if (track->mode == MODE_ISM)
2885  version = 1;
2886 
2887  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
2888  ffio_wfourcc(pb, "tkhd");
2889  avio_w8(pb, version);
2890  avio_wb24(pb, flags);
2891  if (version == 1) {
2892  avio_wb64(pb, track->time);
2893  avio_wb64(pb, track->time);
2894  } else {
2895  avio_wb32(pb, track->time); /* creation time */
2896  avio_wb32(pb, track->time); /* modification time */
2897  }
2898  avio_wb32(pb, track->track_id); /* track-id */
2899  avio_wb32(pb, 0); /* reserved */
2900  if (!track->entry && mov->mode == MODE_ISM)
2901  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
2902  else if (!track->entry)
2903  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
2904  else
2905  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
2906 
2907  avio_wb32(pb, 0); /* reserved */
2908  avio_wb32(pb, 0); /* reserved */
2909  avio_wb16(pb, 0); /* layer */
2910  avio_wb16(pb, group); /* alternate group) */
2911  /* Volume, only for audio */
2912  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2913  avio_wb16(pb, 0x0100);
2914  else
2915  avio_wb16(pb, 0);
2916  avio_wb16(pb, 0); /* reserved */
2917 
2918  /* Matrix structure */
2919 #if FF_API_OLD_ROTATE_API
2920  if (st && st->metadata) {
2921  AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
2922  rotation = (rot && rot->value) ? atoi(rot->value) : 0;
2923  }
2924 #endif
2925  if (display_matrix) {
2926  for (i = 0; i < 9; i++)
2927  avio_wb32(pb, display_matrix[i]);
2928 #if FF_API_OLD_ROTATE_API
2929  } else if (rotation == 90) {
2930  write_matrix(pb, 0, 1, -1, 0, track->par->height, 0);
2931  } else if (rotation == 180) {
2932  write_matrix(pb, -1, 0, 0, -1, track->par->width, track->par->height);
2933  } else if (rotation == 270) {
2934  write_matrix(pb, 0, -1, 1, 0, 0, track->par->width);
2935 #endif
2936  } else {
2937  write_matrix(pb, 1, 0, 0, 1, 0, 0);
2938  }
2939  /* Track width and height, for visual only */
2940  if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2941  track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
2942  int64_t track_width_1616;
2943  if (track->mode == MODE_MOV) {
2944  track_width_1616 = track->par->width * 0x10000ULL;
2945  } else {
2946  track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
2947  track->par->width * 0x10000LL,
2948  st->sample_aspect_ratio.den);
2949  if (!track_width_1616 ||
2950  track->height != track->par->height ||
2951  track_width_1616 > UINT32_MAX)
2952  track_width_1616 = track->par->width * 0x10000ULL;
2953  }
2954  if (track_width_1616 > UINT32_MAX) {
2955  av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
2956  track_width_1616 = 0;
2957  }
2958  avio_wb32(pb, track_width_1616);
2959  if (track->height > 0xFFFF) {
2960  av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
2961  avio_wb32(pb, 0);
2962  } else
2963  avio_wb32(pb, track->height * 0x10000U);
2964  } else {
2965  avio_wb32(pb, 0);
2966  avio_wb32(pb, 0);
2967  }
2968  return 0x5c;
2969 }
2970 
2971 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
2972 {
2974  track->par->sample_aspect_ratio.den);
2975 
2976  int64_t pos = avio_tell(pb);
2977 
2978  avio_wb32(pb, 0); /* size */
2979  ffio_wfourcc(pb, "tapt");
2980 
2981  avio_wb32(pb, 20);
2982  ffio_wfourcc(pb, "clef");
2983  avio_wb32(pb, 0);
2984  avio_wb32(pb, width << 16);
2985  avio_wb32(pb, track->par->height << 16);
2986 
2987  avio_wb32(pb, 20);
2988  ffio_wfourcc(pb, "prof");
2989  avio_wb32(pb, 0);
2990  avio_wb32(pb, width << 16);
2991  avio_wb32(pb, track->par->height << 16);
2992 
2993  avio_wb32(pb, 20);
2994  ffio_wfourcc(pb, "enof");
2995  avio_wb32(pb, 0);
2996  avio_wb32(pb, track->par->width << 16);
2997  avio_wb32(pb, track->par->height << 16);
2998 
2999  return update_size(pb, pos);
3000 }
3001 
3002 // This box seems important for the psp playback ... without it the movie seems to hang
3004  MOVTrack *track)
3005 {
3006  int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
3007  MOV_TIMESCALE, track->timescale,
3008  AV_ROUND_UP);
3009  int version = duration < INT32_MAX ? 0 : 1;
3010  int entry_size, entry_count, size;
3011  int64_t delay, start_ct = track->start_cts;
3012  int64_t start_dts = track->start_dts;
3013 
3014  if (track->entry) {
3015  if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {
3016 
3017  av_log(mov->fc, AV_LOG_DEBUG,
3018  "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",
3019  track->cluster[0].dts, track->cluster[0].cts,
3020  start_dts, start_ct, track->track_id);
3021  start_dts = track->cluster[0].dts;
3022  start_ct = track->cluster[0].cts;
3023  }
3024  }
3025 
3026  delay = av_rescale_rnd(start_dts + start_ct, MOV_TIMESCALE,
3027  track->timescale, AV_ROUND_DOWN);
3028  version |= delay < INT32_MAX ? 0 : 1;
3029 
3030  entry_size = (version == 1) ? 20 : 12;
3031  entry_count = 1 + (delay > 0);
3032  size = 24 + entry_count * entry_size;
3033 
3034  /* write the atom data */
3035  avio_wb32(pb, size);
3036  ffio_wfourcc(pb, "edts");
3037  avio_wb32(pb, size - 8);
3038  ffio_wfourcc(pb, "elst");
3039  avio_w8(pb, version);
3040  avio_wb24(pb, 0); /* flags */
3041 
3042  avio_wb32(pb, entry_count);
3043  if (delay > 0) { /* add an empty edit to delay presentation */
3044  /* In the positive delay case, the delay includes the cts
3045  * offset, and the second edit list entry below trims out
3046  * the same amount from the actual content. This makes sure
3047  * that the offset last sample is included in the edit
3048  * list duration as well. */
3049  if (version == 1) {
3050  avio_wb64(pb, delay);
3051  avio_wb64(pb, -1);
3052  } else {
3053  avio_wb32(pb, delay);
3054  avio_wb32(pb, -1);
3055  }
3056  avio_wb32(pb, 0x00010000);
3057  } else {
3058  /* Avoid accidentally ending up with start_ct = -1 which has got a
3059  * special meaning. Normally start_ct should end up positive or zero
3060  * here, but use FFMIN in case dts is a small positive integer
3061  * rounded to 0 when represented in MOV_TIMESCALE units. */
3062  av_assert0(av_rescale_rnd(start_dts, MOV_TIMESCALE, track->timescale, AV_ROUND_DOWN) <= 0);
3063  start_ct = -FFMIN(start_dts, 0);
3064  /* Note, this delay is calculated from the pts of the first sample,
3065  * ensuring that we don't reduce the duration for cases with
3066  * dts<0 pts=0. */
3067  duration += delay;
3068  }
3069 
3070  /* For fragmented files, we don't know the full length yet. Setting
3071  * duration to 0 allows us to only specify the offset, including
3072  * the rest of the content (from all future fragments) without specifying
3073  * an explicit duration. */
3074  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
3075  duration = 0;
3076 
3077  /* duration */
3078  if (version == 1) {
3079  avio_wb64(pb, duration);
3080  avio_wb64(pb, start_ct);
3081  } else {
3082  avio_wb32(pb, duration);
3083  avio_wb32(pb, start_ct);
3084  }
3085  avio_wb32(pb, 0x00010000);
3086  return size;
3087 }
3088 
3089 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
3090 {
3091  avio_wb32(pb, 20); // size
3092  ffio_wfourcc(pb, "tref");
3093  avio_wb32(pb, 12); // size (subatom)
3094  avio_wl32(pb, track->tref_tag);
3095  avio_wb32(pb, track->tref_id);
3096  return 20;
3097 }
3098 
3099 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
3101 {
3102  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
3103  ffio_wfourcc(pb, "uuid");
3104  ffio_wfourcc(pb, "USMT");
3105  avio_wb32(pb, 0x21d24fce);
3106  avio_wb32(pb, 0xbb88695c);
3107  avio_wb32(pb, 0xfac9c740);
3108  avio_wb32(pb, 0x1c); // another size here!
3109  ffio_wfourcc(pb, "MTDT");
3110  avio_wb32(pb, 0x00010012);
3111  avio_wb32(pb, 0x0a);
3112  avio_wb32(pb, 0x55c40000);
3113  avio_wb32(pb, 0x1);
3114  avio_wb32(pb, 0x0);
3115  return 0x34;
3116 }
3117 
3118 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
3119 {
3120  AVFormatContext *ctx = track->rtp_ctx;
3121  char buf[1000] = "";
3122  int len;
3123 
3124  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
3125  NULL, NULL, 0, 0, ctx);
3126  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
3127  len = strlen(buf);
3128 
3129  avio_wb32(pb, len + 24);
3130  ffio_wfourcc(pb, "udta");
3131  avio_wb32(pb, len + 16);
3132  ffio_wfourcc(pb, "hnti");
3133  avio_wb32(pb, len + 8);
3134  ffio_wfourcc(pb, "sdp ");
3135  avio_write(pb, buf, len);
3136  return len + 24;
3137 }
3138 
3140  const char *tag, const char *str)
3141 {
3142  int64_t pos = avio_tell(pb);
3143  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
3144  if (!t || !utf8len(t->value))
3145  return 0;
3146 
3147  avio_wb32(pb, 0); /* size */
3148  ffio_wfourcc(pb, tag); /* type */
3149  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
3150  return update_size(pb, pos);
3151 }
3152 
3154  AVStream *st)
3155 {
3156  AVIOContext *pb_buf;
3157  int ret, size;
3158  uint8_t *buf;
3159 
3160  if (!st)
3161  return 0;
3162 
3163  ret = avio_open_dyn_buf(&pb_buf);
3164  if (ret < 0)
3165  return ret;
3166 
3167  if (mov->mode & (MODE_MP4|MODE_MOV))
3168  mov_write_track_metadata(pb_buf, st, "name", "title");
3169 
3170  if ((size = avio_get_dyn_buf(pb_buf, &buf)) > 0) {
3171  avio_wb32(pb, size + 8);
3172  ffio_wfourcc(pb, "udta");
3173  avio_write(pb, buf, size);
3174  }
3175  ffio_free_dyn_buf(&pb_buf);
3176 
3177  return 0;
3178 }
3179 
3181  MOVTrack *track, AVStream *st)
3182 {
3183  int64_t pos = avio_tell(pb);
3184  int entry_backup = track->entry;
3185  int chunk_backup = track->chunkCount;
3186  int ret;
3187 
3188  /* If we want to have an empty moov, but some samples already have been
3189  * buffered (delay_moov), pretend that no samples have been written yet. */
3190  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
3191  track->chunkCount = track->entry = 0;
3192 
3193  avio_wb32(pb, 0); /* size */
3194  ffio_wfourcc(pb, "trak");
3195  mov_write_tkhd_tag(pb, mov, track, st);
3196 
3197  av_assert2(mov->use_editlist >= 0);
3198 
3199  if (track->start_dts != AV_NOPTS_VALUE) {
3200  if (mov->use_editlist)
3201  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
3202  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
3203  av_log(mov->fc, AV_LOG_WARNING,
3204  "Not writing any edit list even though one would have been required\n");
3205  }
3206 
3207  if (track->tref_tag)
3208  mov_write_tref_tag(pb, track);
3209 
3210  if ((ret = mov_write_mdia_tag(s, pb, mov, track)) < 0)
3211  return ret;
3212  if (track->mode == MODE_PSP)
3213  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
3214  if (track->tag == MKTAG('r','t','p',' '))
3215  mov_write_udta_sdp(pb, track);
3216  if (track->mode == MODE_MOV) {
3217  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3218  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
3219  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
3220  mov_write_tapt_tag(pb, track);
3221  }
3222  }
3223  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
3224  mov_write_tapt_tag(pb, track);
3225  }
3226  }
3227  mov_write_track_udta_tag(pb, mov, st);
3228  track->entry = entry_backup;
3229  track->chunkCount = chunk_backup;
3230  return update_size(pb, pos);
3231 }
3232 
3234 {
3235  int i, has_audio = 0, has_video = 0;
3236  int64_t pos = avio_tell(pb);
3237  int audio_profile = mov->iods_audio_profile;
3238  int video_profile = mov->iods_video_profile;
3239  for (i = 0; i < mov->nb_streams; i++) {
3240  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3241  has_audio |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_AUDIO;
3242  has_video |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_VIDEO;
3243  }
3244  }
3245  if (audio_profile < 0)
3246  audio_profile = 0xFF - has_audio;
3247  if (video_profile < 0)
3248  video_profile = 0xFF - has_video;
3249  avio_wb32(pb, 0x0); /* size */
3250  ffio_wfourcc(pb, "iods");
3251  avio_wb32(pb, 0); /* version & flags */
3252  put_descr(pb, 0x10, 7);
3253  avio_wb16(pb, 0x004f);
3254  avio_w8(pb, 0xff);
3255  avio_w8(pb, 0xff);
3256  avio_w8(pb, audio_profile);
3257  avio_w8(pb, video_profile);
3258  avio_w8(pb, 0xff);
3259  return update_size(pb, pos);
3260 }
3261 
3262 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
3263 {
3264  avio_wb32(pb, 0x20); /* size */
3265  ffio_wfourcc(pb, "trex");
3266  avio_wb32(pb, 0); /* version & flags */
3267  avio_wb32(pb, track->track_id); /* track ID */
3268  avio_wb32(pb, 1); /* default sample description index */
3269  avio_wb32(pb, 0); /* default sample duration */
3270  avio_wb32(pb, 0); /* default sample size */
3271  avio_wb32(pb, 0); /* default sample flags */
3272  return 0;
3273 }
3274 
3276 {
3277  int64_t pos = avio_tell(pb);
3278  int i;
3279  avio_wb32(pb, 0x0); /* size */
3280  ffio_wfourcc(pb, "mvex");
3281  for (i = 0; i < mov->nb_streams; i++)
3282  mov_write_trex_tag(pb, &mov->tracks[i]);
3283  return update_size(pb, pos);
3284 }
3285 
3287 {
3288  int max_track_id = 1, i;
3289  int64_t max_track_len = 0;
3290  int version;
3291 
3292  for (i = 0; i < mov->nb_streams; i++) {
3293  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
3294  int64_t max_track_len_temp = av_rescale_rnd(
3295  calc_pts_duration(mov, &mov->tracks[i]),
3296  MOV_TIMESCALE,
3297  mov->tracks[i].timescale,
3298  AV_ROUND_UP);
3299  if (max_track_len < max_track_len_temp)
3300  max_track_len = max_track_len_temp;
3301  if (max_track_id < mov->tracks[i].track_id)
3302  max_track_id = mov->tracks[i].track_id;
3303  }
3304  }
3305  /* If using delay_moov, make sure the output is the same as if no
3306  * samples had been written yet. */
3307  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3308  max_track_len = 0;
3309  max_track_id = 1;
3310  }
3311 
3312  version = max_track_len < UINT32_MAX ? 0 : 1;
3313  avio_wb32(pb, version == 1 ? 120 : 108); /* size */
3314 
3315  ffio_wfourcc(pb, "mvhd");
3316  avio_w8(pb, version);
3317  avio_wb24(pb, 0); /* flags */
3318  if (version == 1) {
3319  avio_wb64(pb, mov->time);
3320  avio_wb64(pb, mov->time);
3321  } else {
3322  avio_wb32(pb, mov->time); /* creation time */
3323  avio_wb32(pb, mov->time); /* modification time */
3324  }
3325  avio_wb32(pb, MOV_TIMESCALE);
3326  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
3327 
3328  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
3329  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
3330  avio_wb16(pb, 0); /* reserved */
3331  avio_wb32(pb, 0); /* reserved */
3332  avio_wb32(pb, 0); /* reserved */
3333 
3334  /* Matrix structure */
3335  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3336 
3337  avio_wb32(pb, 0); /* reserved (preview time) */
3338  avio_wb32(pb, 0); /* reserved (preview duration) */
3339  avio_wb32(pb, 0); /* reserved (poster time) */
3340  avio_wb32(pb, 0); /* reserved (selection time) */
3341  avio_wb32(pb, 0); /* reserved (selection duration) */
3342  avio_wb32(pb, 0); /* reserved (current time) */
3343  avio_wb32(pb, max_track_id + 1); /* Next track id */
3344  return 0x6c;
3345 }
3346 
3348  AVFormatContext *s)
3349 {
3350  avio_wb32(pb, 33); /* size */
3351  ffio_wfourcc(pb, "hdlr");
3352  avio_wb32(pb, 0);
3353  avio_wb32(pb, 0);
3354  ffio_wfourcc(pb, "mdir");
3355  ffio_wfourcc(pb, "appl");
3356  avio_wb32(pb, 0);
3357  avio_wb32(pb, 0);
3358  avio_w8(pb, 0);
3359  return 33;
3360 }
3361 
3362 /* helper function to write a data tag with the specified string as data */
3363 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
3364 {
3365  if (long_style) {
3366  int size = 16 + strlen(data);
3367  avio_wb32(pb, size); /* size */
3368  ffio_wfourcc(pb, "data");
3369  avio_wb32(pb, 1);
3370  avio_wb32(pb, 0);
3371  avio_write(pb, data, strlen(data));
3372  return size;
3373  } else {
3374  if (!lang)
3375  lang = ff_mov_iso639_to_lang("und", 1);
3376  avio_wb16(pb, strlen(data)); /* string length */
3377  avio_wb16(pb, lang);
3378  avio_write(pb, data, strlen(data));
3379  return strlen(data) + 4;
3380  }
3381 }
3382 
3383 static int mov_write_string_tag(AVIOContext *pb, const char *name,
3384  const char *value, int lang, int long_style)
3385 {
3386  int size = 0;
3387  if (value && value[0]) {
3388  int64_t pos = avio_tell(pb);
3389  avio_wb32(pb, 0); /* size */
3390  ffio_wfourcc(pb, name);
3391  mov_write_string_data_tag(pb, value, lang, long_style);
3392  size = update_size(pb, pos);
3393  }
3394  return size;
3395 }
3396 
3398  const char *tag, int *lang)
3399 {
3400  int l, len, len2;
3401  AVDictionaryEntry *t, *t2 = NULL;
3402  char tag2[16];
3403 
3404  *lang = 0;
3405 
3406  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3407  return NULL;
3408 
3409  len = strlen(t->key);
3410  snprintf(tag2, sizeof(tag2), "%s-", tag);
3411  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
3412  len2 = strlen(t2->key);
3413  if (len2 == len + 4 && !strcmp(t->value, t2->value)
3414  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
3415  *lang = l;
3416  return t;
3417  }
3418  }
3419  return t;
3420 }
3421 
3423  const char *name, const char *tag,
3424  int long_style)
3425 {
3426  int lang;
3427  AVDictionaryEntry *t = get_metadata_lang(s, tag, &lang);
3428  if (!t)
3429  return 0;
3430  return mov_write_string_tag(pb, name, t->value, lang, long_style);
3431 }
3432 
3433 /* iTunes bpm number */
3435 {
3436  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
3437  int size = 0, tmpo = t ? atoi(t->value) : 0;
3438  if (tmpo) {
3439  size = 26;
3440  avio_wb32(pb, size);
3441  ffio_wfourcc(pb, "tmpo");
3442  avio_wb32(pb, size-8); /* size */
3443  ffio_wfourcc(pb, "data");
3444  avio_wb32(pb, 0x15); //type specifier
3445  avio_wb32(pb, 0);
3446  avio_wb16(pb, tmpo); // data
3447  }
3448  return size;
3449 }
3450 
3451 /* 3GPP TS 26.244 */
3453 {
3454  int lang;
3455  int64_t pos = avio_tell(pb);
3456  double latitude, longitude, altitude;
3457  int32_t latitude_fix, longitude_fix, altitude_fix;
3458  AVDictionaryEntry *t = get_metadata_lang(s, "location", &lang);
3459  const char *ptr, *place = "";
3460  char *end;
3461  static const char *astronomical_body = "earth";
3462  if (!t)
3463  return 0;
3464 
3465  ptr = t->value;
3466  longitude = strtod(ptr, &end);
3467  if (end == ptr) {
3468  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3469  return 0;
3470  }
3471  ptr = end;
3472  latitude = strtod(ptr, &end);
3473  if (end == ptr) {
3474  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3475  return 0;
3476  }
3477  ptr = end;
3478  altitude = strtod(ptr, &end);
3479  /* If no altitude was present, the default 0 should be fine */
3480  if (*end == '/')
3481  place = end + 1;
3482 
3483  latitude_fix = (int32_t) ((1 << 16) * latitude);
3484  longitude_fix = (int32_t) ((1 << 16) * longitude);
3485  altitude_fix = (int32_t) ((1 << 16) * altitude);
3486 
3487  avio_wb32(pb, 0); /* size */
3488  ffio_wfourcc(pb, "loci"); /* type */
3489  avio_wb32(pb, 0); /* version + flags */
3490  avio_wb16(pb, lang);
3491  avio_write(pb, place, strlen(place) + 1);
3492  avio_w8(pb, 0); /* role of place (0 == shooting location, 1 == real location, 2 == fictional location) */
3493  avio_wb32(pb, latitude_fix);
3494  avio_wb32(pb, longitude_fix);
3495  avio_wb32(pb, altitude_fix);
3496  avio_write(pb, astronomical_body, strlen(astronomical_body) + 1);
3497  avio_w8(pb, 0); /* additional notes, null terminated string */
3498 
3499  return update_size(pb, pos);
3500 }
3501 
3502 /* iTunes track or disc number */
3504  AVFormatContext *s, int disc)
3505 {
3507  disc ? "disc" : "track",
3508  NULL, 0);
3509  int size = 0, track = t ? atoi(t->value) : 0;
3510  if (track) {
3511  int tracks = 0;
3512  char *slash = strchr(t->value, '/');
3513  if (slash)
3514  tracks = atoi(slash + 1);
3515  avio_wb32(pb, 32); /* size */
3516  ffio_wfourcc(pb, disc ? "disk" : "trkn");
3517  avio_wb32(pb, 24); /* size */
3518  ffio_wfourcc(pb, "data");
3519  avio_wb32(pb, 0); // 8 bytes empty
3520  avio_wb32(pb, 0);
3521  avio_wb16(pb, 0); // empty
3522  avio_wb16(pb, track); // track / disc number
3523  avio_wb16(pb, tracks); // total track / disc number
3524  avio_wb16(pb, 0); // empty
3525  size = 32;
3526  }
3527  return size;
3528 }
3529 
3531  const char *name, const char *tag,
3532  int len)
3533 {
3534  AVDictionaryEntry *t = NULL;
3535  uint8_t num;
3536  int size = 24 + len;
3537 
3538  if (len != 1 && len != 4)
3539  return -1;
3540 
3541  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3542  return 0;
3543  num = atoi(t->value);
3544 
3545  avio_wb32(pb, size);
3546  ffio_wfourcc(pb, name);
3547  avio_wb32(pb, size - 8);
3548  ffio_wfourcc(pb, "data");
3549  avio_wb32(pb, 0x15);
3550  avio_wb32(pb, 0);
3551  if (len==4) avio_wb32(pb, num);
3552  else avio_w8 (pb, num);
3553 
3554  return size;
3555 }
3556 
3558 {
3559  MOVMuxContext *mov = s->priv_data;
3560  int64_t pos = 0;
3561  int i;
3562 
3563  for (i = 0; i < s->nb_streams; i++) {
3564  MOVTrack *trk = &mov->tracks[i];
3565 
3566  if (!is_cover_image(trk->st) || trk->cover_image.size <= 0)
3567  continue;
3568 
3569  if (!pos) {
3570  pos = avio_tell(pb);
3571  avio_wb32(pb, 0);
3572  ffio_wfourcc(pb, "covr");
3573  }
3574  avio_wb32(pb, 16 + trk->cover_image.size);
3575  ffio_wfourcc(pb, "data");
3576  avio_wb32(pb, trk->tag);
3577  avio_wb32(pb , 0);
3578  avio_write(pb, trk->cover_image.data, trk->cover_image.size);
3579  }
3580 
3581  return pos ? update_size(pb, pos) : 0;
3582 }
3583 
3584 /* iTunes meta data list */
3586  AVFormatContext *s)
3587 {
3588  int64_t pos = avio_tell(pb);
3589  avio_wb32(pb, 0); /* size */
3590  ffio_wfourcc(pb, "ilst");
3591  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
3592  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
3593  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
3594  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
3595  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
3596  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
3597  if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {
3598  if (!(s->flags & AVFMT_FLAG_BITEXACT))
3599  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
3600  }
3601  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
3602  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
3603  mov_write_string_metadata(s, pb, "cprt", "copyright", 1);
3604  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
3605  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
3606  mov_write_string_metadata(s, pb, "desc", "description",1);
3607  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
3608  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
3609  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
3610  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
3611  mov_write_string_metadata(s, pb, "keyw", "keywords" , 1);
3612  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
3613  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
3614  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
3615  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
3616  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
3617  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
3618  mov_write_covr(pb, s);
3619  mov_write_trkn_tag(pb, mov, s, 0); // track number
3620  mov_write_trkn_tag(pb, mov, s, 1); // disc number
3621  mov_write_tmpo_tag(pb, s);
3622  return update_size(pb, pos);
3623 }
3624 
3626  AVFormatContext *s)
3627 {
3628  avio_wb32(pb, 33); /* size */
3629  ffio_wfourcc(pb, "hdlr");
3630  avio_wb32(pb, 0);
3631  avio_wb32(pb, 0);
3632  ffio_wfourcc(pb, "mdta");
3633  avio_wb32(pb, 0);
3634  avio_wb32(pb, 0);
3635  avio_wb32(pb, 0);
3636  avio_w8(pb, 0);
3637  return 33;
3638 }
3639 
3641  AVFormatContext *s)
3642 {
3643  AVDictionaryEntry *t = NULL;
3644  int64_t pos = avio_tell(pb);
3645  int64_t curpos, entry_pos;
3646  int count = 0;
3647 
3648  avio_wb32(pb, 0); /* size */
3649  ffio_wfourcc(pb, "keys");
3650  avio_wb32(pb, 0);
3651  entry_pos = avio_tell(pb);
3652  avio_wb32(pb, 0); /* entry count */
3653 
3654  while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {
3655  avio_wb32(pb, strlen(t->key) + 8);
3656  ffio_wfourcc(pb, "mdta");
3657  avio_write(pb, t->key, strlen(t->key));
3658  count += 1;
3659  }
3660  curpos = avio_tell(pb);
3661  avio_seek(pb, entry_pos, SEEK_SET);
3662  avio_wb32(pb, count); // rewrite entry count
3663  avio_seek(pb, curpos, SEEK_SET);
3664 
3665  return update_size(pb, pos);
3666 }
3667 
3669  AVFormatContext *s)
3670 {
3671  AVDictionaryEntry *t = NULL;
3672  int64_t pos = avio_tell(pb);
3673  int count = 1; /* keys are 1-index based */
3674 
3675  avio_wb32(pb, 0); /* size */
3676  ffio_wfourcc(pb, "ilst");
3677 
3678  while (t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX)) {
3679  int64_t entry_pos = avio_tell(pb);
3680  avio_wb32(pb, 0); /* size */
3681  avio_wb32(pb, count); /* key */
3682  mov_write_string_data_tag(pb, t->value, 0, 1);
3683  update_size(pb, entry_pos);
3684  count += 1;
3685  }
3686  return update_size(pb, pos);
3687 }
3688 
3689 /* meta data tags */
3691  AVFormatContext *s)
3692 {
3693  int size = 0;
3694  int64_t pos = avio_tell(pb);
3695  avio_wb32(pb, 0); /* size */
3696  ffio_wfourcc(pb, "meta");
3697  avio_wb32(pb, 0);
3698  if (mov->flags & FF_MOV_FLAG_USE_MDTA) {
3699  mov_write_mdta_hdlr_tag(pb, mov, s);
3700  mov_write_mdta_keys_tag(pb, mov, s);
3701  mov_write_mdta_ilst_tag(pb, mov, s);
3702  }
3703  else {
3704  /* iTunes metadata tag */
3705  mov_write_itunes_hdlr_tag(pb, mov, s);
3706  mov_write_ilst_tag(pb, mov, s);
3707  }
3708  size = update_size(pb, pos);
3709  return size;
3710 }
3711 
3713  const char *name, const char *key)
3714 {
3715  int len;
3716  AVDictionaryEntry *t;
3717 
3718  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
3719  return 0;
3720 
3721  len = strlen(t->value);
3722  if (len > 0) {
3723  int size = len + 8;
3724  avio_wb32(pb, size);
3725  ffio_wfourcc(pb, name);
3726  avio_write(pb, t->value, len);
3727  return size;
3728  }
3729  return 0;
3730 }
3731 
3732 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
3733 {
3734  int val;
3735  while (*b) {
3736  GET_UTF8(val, *b++, return -1;)
3737  avio_wb16(pb, val);
3738  }
3739  avio_wb16(pb, 0x00);
3740  return 0;
3741 }
3742 
3743 static uint16_t language_code(const char *str)
3744 {
3745  return (((str[0] - 0x60) & 0x1F) << 10) +
3746  (((str[1] - 0x60) & 0x1F) << 5) +
3747  (( str[2] - 0x60) & 0x1F);
3748 }
3749 
3751  const char *tag, const char *str)
3752 {
3753  int64_t pos = avio_tell(pb);
3754  AVDictionaryEntry *t = av_dict_get(s->metadata, str, NULL, 0);
3755  if (!t || !utf8len(t->value))
3756  return 0;
3757  avio_wb32(pb, 0); /* size */
3758  ffio_wfourcc(pb, tag); /* type */
3759  avio_wb32(pb, 0); /* version + flags */
3760  if (!strcmp(tag, "yrrc"))
3761  avio_wb16(pb, atoi(t->value));
3762  else {
3763  avio_wb16(pb, language_code("eng")); /* language */
3764  avio_write(pb, t->value, strlen(t->value) + 1); /* UTF8 string value */
3765  if (!strcmp(tag, "albm") &&
3766  (t = av_dict_get(s->metadata, "track", NULL, 0)))
3767  avio_w8(pb, atoi(t->value));
3768  }
3769  return update_size(pb, pos);
3770 }
3771 
3773 {
3774  int64_t pos = avio_tell(pb);
3775  int i, nb_chapters = FFMIN(s->nb_chapters, 255);
3776 
3777  avio_wb32(pb, 0); // size
3778  ffio_wfourcc(pb, "chpl");
3779  avio_wb32(pb, 0x01000000); // version + flags
3780  avio_wb32(pb, 0); // unknown
3781  avio_w8(pb, nb_chapters);
3782 
3783  for (i = 0; i < nb_chapters; i++) {
3784  AVChapter *c = s->chapters[i];
3785  AVDictionaryEntry *t;
3786  avio_wb64(pb, av_rescale_q(c->start, c->time_base, (AVRational){1,10000000}));
3787 
3788  if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
3789  int len = FFMIN(strlen(t->value), 255);
3790  avio_w8(pb, len);
3791  avio_write(pb, t->value, len);
3792  } else
3793  avio_w8(pb, 0);
3794  }
3795  return update_size(pb, pos);
3796 }
3797 
3799  AVFormatContext *s)
3800 {
3801  AVIOContext *pb_buf;
3802  int ret, size;
3803  uint8_t *buf;
3804 
3805  ret = avio_open_dyn_buf(&pb_buf);
3806  if (ret < 0)
3807  return ret;
3808 
3809  if (mov->mode & MODE_3GP) {
3810  mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
3811  mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
3812  mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
3813  mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
3814  mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
3815  mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
3816  mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
3817  mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
3818  mov_write_loci_tag(s, pb_buf);
3819  } 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
3820  mov_write_string_metadata(s, pb_buf, "\251ART", "artist", 0);
3821  mov_write_string_metadata(s, pb_buf, "\251nam", "title", 0);
3822  mov_write_string_metadata(s, pb_buf, "\251aut", "author", 0);
3823  mov_write_string_metadata(s, pb_buf, "\251alb", "album", 0);
3824  mov_write_string_metadata(s, pb_buf, "\251day", "date", 0);
3825  mov_write_string_metadata(s, pb_buf, "\251swr", "encoder", 0);
3826  // currently ignored by mov.c
3827  mov_write_string_metadata(s, pb_buf, "\251des", "comment", 0);
3828  // add support for libquicktime, this atom is also actually read by mov.c
3829  mov_write_string_metadata(s, pb_buf, "\251cmt", "comment", 0);
3830  mov_write_string_metadata(s, pb_buf, "\251gen", "genre", 0);
3831  mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright", 0);
3832  mov_write_string_metadata(s, pb_buf, "\251mak", "make", 0);
3833  mov_write_string_metadata(s, pb_buf, "\251mod", "model", 0);
3834  mov_write_string_metadata(s, pb_buf, "\251xyz", "location", 0);
3835  mov_write_string_metadata(s, pb_buf, "\251key", "keywords", 0);
3836  mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
3837  } else {
3838  /* iTunes meta data */
3839  mov_write_meta_tag(pb_buf, mov, s);
3840  mov_write_loci_tag(s, pb_buf);
3841  }
3842 
3843  if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
3844  mov_write_chpl_tag(pb_buf, s);
3845 
3846  if ((size = avio_get_dyn_buf(pb_buf, &buf)) > 0) {
3847  avio_wb32(pb, size + 8);
3848  ffio_wfourcc(pb, "udta");
3849  avio_write(pb, buf, size);
3850  }
3851  ffio_free_dyn_buf(&pb_buf);
3852 
3853  return 0;
3854 }
3855 
3857  const char *str, const char *lang, int type)
3858 {
3859  int len = utf8len(str) + 1;
3860  if (len <= 0)
3861  return;
3862  avio_wb16(pb, len * 2 + 10); /* size */
3863  avio_wb32(pb, type); /* type */
3864  avio_wb16(pb, language_code(lang)); /* language */
3865  avio_wb16(pb, 0x01); /* ? */
3866  ascii_to_wc(pb, str);
3867 }
3868 
3870 {
3871  AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
3872  int64_t pos, pos2;
3873 
3874  if (title) {
3875  pos = avio_tell(pb);
3876  avio_wb32(pb, 0); /* size placeholder*/
3877  ffio_wfourcc(pb, "uuid");
3878  ffio_wfourcc(pb, "USMT");
3879  avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
3880  avio_wb32(pb, 0xbb88695c);
3881  avio_wb32(pb, 0xfac9c740);
3882 
3883  pos2 = avio_tell(pb);
3884  avio_wb32(pb, 0); /* size placeholder*/
3885  ffio_wfourcc(pb, "MTDT");
3886  avio_wb16(pb, 4);
3887 
3888  // ?
3889  avio_wb16(pb, 0x0C); /* size */
3890  avio_wb32(pb, 0x0B); /* type */
3891  avio_wb16(pb, language_code("und")); /* language */
3892  avio_wb16(pb, 0x0); /* ? */
3893  avio_wb16(pb, 0x021C); /* data */
3894 
3895  if (!(s->flags & AVFMT_FLAG_BITEXACT))
3896  mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT, "eng", 0x04);
3897  mov_write_psp_udta_tag(pb, title->value, "eng", 0x01);
3898  mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);
3899 
3900  update_size(pb, pos2);
3901  return update_size(pb, pos);
3902  }
3903 
3904  return 0;
3905 }
3906 
3907 static void build_chunks(MOVTrack *trk)
3908 {
3909  int i;
3910  MOVIentry *chunk = &trk->cluster[0];
3911  uint64_t chunkSize = chunk->size;
3912  chunk->chunkNum = 1;
3913  if (trk->chunkCount)
3914  return;
3915  trk->chunkCount = 1;
3916  for (i = 1; i<trk->entry; i++){
3917  if (chunk->pos + chunkSize == trk->cluster[i].pos &&
3918  chunkSize + trk->cluster[i].size < (1<<20)){
3919  chunkSize += trk->cluster[i].size;
3920  chunk->samples_in_chunk += trk->cluster[i].entries;
3921  } else {
3922  trk->cluster[i].chunkNum = chunk->chunkNum+1;
3923  chunk=&trk->cluster[i];
3924  chunkSize = chunk->size;
3925  trk->chunkCount++;
3926  }
3927  }
3928 }
3929 
3930 /**
3931  * Assign track ids. If option "use_stream_ids_as_track_ids" is set,
3932  * the stream ids are used as track ids.
3933  *
3934  * This assumes mov->tracks and s->streams are in the same order and
3935  * there are no gaps in either of them (so mov->tracks[n] refers to
3936  * s->streams[n]).
3937  *
3938  * As an exception, there can be more entries in
3939  * s->streams than in mov->tracks, in which case new track ids are
3940  * generated (starting after the largest found stream id).
3941  */
3943 {
3944  int i;
3945 
3946  if (mov->track_ids_ok)
3947  return 0;
3948 
3949  if (mov->use_stream_ids_as_track_ids) {
3950  int next_generated_track_id = 0;
3951  for (i = 0; i < s->nb_streams; i++) {
3952  if (s->streams[i]->id > next_generated_track_id)
3953  next_generated_track_id = s->streams[i]->id;
3954  }
3955 
3956  for (i = 0; i < mov->nb_streams; i++) {
3957  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3958  continue;
3959 
3960  mov->tracks[i].track_id = i >= s->nb_streams ? ++next_generated_track_id : s->streams[i]->id;
3961  }
3962  } else {
3963  for (i = 0; i < mov->nb_streams; i++) {
3964  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3965  continue;
3966 
3967  mov->tracks[i].track_id = i + 1;
3968  }
3969  }
3970 
3971  mov->track_ids_ok = 1;
3972 
3973  return 0;
3974 }
3975 
3977  AVFormatContext *s)
3978 {
3979  int i;
3980  int64_t pos = avio_tell(pb);
3981  avio_wb32(pb, 0); /* size placeholder*/
3982  ffio_wfourcc(pb, "moov");
3983 
3984  mov_setup_track_ids(mov, s);
3985 
3986  for (i = 0; i < mov->nb_streams; i++) {
3987  if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
3988  continue;
3989 
3990  mov->tracks[i].time = mov->time;
3991 
3992  if (mov->tracks[i].entry)
3993  build_chunks(&mov->tracks[i]);
3994  }
3995 
3996  if (mov->chapter_track)
3997  for (i = 0; i < s->nb_streams; i++) {
3998  mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
3999  mov->tracks[i].tref_id = mov->tracks[mov->chapter_track].track_id;
4000  }
4001  for (i = 0; i < mov->nb_streams; i++) {
4002  MOVTrack *track = &mov->tracks[i];
4003  if (track->tag == MKTAG('r','t','p',' ')) {
4004  track->tref_tag = MKTAG('h','i','n','t');
4005  track->tref_id = mov->tracks[track->src_track].track_id;
4006  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
4007  int * fallback, size;
4008  fallback = (int*)av_stream_get_side_data(track->st,
4010  &size);
4011  if (fallback != NULL && size == sizeof(int)) {
4012  if (*fallback >= 0 && *fallback < mov->nb_streams) {
4013  track->tref_tag = MKTAG('f','a','l','l');
4014  track->tref_id = mov->tracks[*fallback].track_id;
4015  }
4016  }
4017  }
4018  }
4019  for (i = 0; i < mov->nb_streams; i++) {
4020  if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
4021  int src_trk = mov->tracks[i].src_track;
4022  mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
4023  mov->tracks[src_trk].tref_id = mov->tracks[i].track_id;
4024  //src_trk may have a different timescale than the tmcd track
4025  mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
4026  mov->tracks[i].timescale,
4027  mov->tracks[src_trk].timescale);
4028  }
4029  }
4030 
4031  mov_write_mvhd_tag(pb, mov);
4032  if (mov->mode != MODE_MOV && !mov->iods_skip)
4033  mov_write_iods_tag(pb, mov);
4034  for (i = 0; i < mov->nb_streams; i++) {
4035  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
4036  int ret = mov_write_trak_tag(s, pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
4037  if (ret < 0)
4038  return ret;
4039  }
4040  }
4041  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
4042  mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */
4043 
4044  if (mov->mode == MODE_PSP)
4045  mov_write_uuidusmt_tag(pb, s);
4046  else
4047  mov_write_udta_tag(pb, mov, s);
4048 
4049  return update_size(pb, pos);
4050 }
4051 
4052 static void param_write_int(AVIOContext *pb, const char *name, int value)
4053 {
4054  avio_printf(pb, "<param name=\"%s\" value=\"%d\" valuetype=\"data\"/>\n", name, value);
4055 }
4056 
4057 static void param_write_string(AVIOContext *pb, const char *name, const char *value)
4058 {
4059  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, value);
4060 }
4061 
4062 static void param_write_hex(AVIOContext *pb, const char *name, const uint8_t *value, int len)
4063 {
4064  char buf[150];
4065  len = FFMIN(sizeof(buf) / 2 - 1, len);
4066  ff_data_to_hex(buf, value, len, 0);
4067  buf[2 * len] = '\0';
4068  avio_printf(pb, "<param name=\"%s\" value=\"%s\" valuetype=\"data\"/>\n", name, buf);
4069 }
4070 
4072 {
4073  int64_t pos = avio_tell(pb);
4074  int i;
4075  int64_t manifest_bit_rate = 0;
4076  AVCPBProperties *props = NULL;
4077 
4078  static const uint8_t uuid[] = {
4079  0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
4080  0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
4081  };
4082 
4083  avio_wb32(pb, 0);
4084  ffio_wfourcc(pb, "uuid");
4085  avio_write(pb, uuid, sizeof(uuid));
4086  avio_wb32(pb, 0);
4087 
4088  avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
4089  avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
4090  avio_printf(pb, "<head>\n");
4091  if (!(mov->fc->flags & AVFMT_FLAG_BITEXACT))
4092  avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
4094  avio_printf(pb, "</head>\n");
4095  avio_printf(pb, "<body>\n");
4096  avio_printf(pb, "<switch>\n");
4097 
4098  mov_setup_track_ids(mov, s);
4099 
4100  for (i = 0; i < mov->nb_streams; i++) {
4101  MOVTrack *track = &mov->tracks[i];
4102  const char *type;
4103  int track_id = track->track_id;
4104  char track_name_buf[32] = { 0 };
4105 
4106  AVStream *st = track->st;
4107  AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);
4108 
4109  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && !is_cover_image(st)) {
4110  type = "video";
4111  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
4112  type = "audio";
4113  } else {
4114  continue;
4115  }
4116 
4118 
4119  if (track->par->bit_rate) {
4120  manifest_bit_rate = track->par->bit_rate;
4121  } else if (props) {
4122  manifest_bit_rate = props->max_bitrate;
4123  }
4124 
4125  avio_printf(pb, "<%s systemBitrate=\"%"PRId64"\">\n", type,
4126  manifest_bit_rate);
4127  param_write_int(pb, "systemBitrate", manifest_bit_rate);
4128  param_write_int(pb, "trackID", track_id);
4129  param_write_string(pb, "systemLanguage", lang ? lang->value : "und");
4130 
4131  /* Build track name piece by piece: */
4132  /* 1. track type */
4133  av_strlcat(track_name_buf, type, sizeof(track_name_buf));
4134  /* 2. track language, if available */
4135  if (lang)
4136  av_strlcatf(track_name_buf, sizeof(track_name_buf),
4137  "_%s", lang->value);
4138  /* 3. special type suffix */
4139  /* "_cc" = closed captions, "_ad" = audio_description */
4141  av_strlcat(track_name_buf, "_cc", sizeof(track_name_buf));
4143  av_strlcat(track_name_buf, "_ad", sizeof(track_name_buf));
4144 
4145  param_write_string(pb, "trackName", track_name_buf);
4146 
4147  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
4148  if (track->par->codec_id == AV_CODEC_ID_H264) {
4149  uint8_t *ptr;
4150  int size = track->par->extradata_size;
4151  if (!ff_avc_write_annexb_extradata(track->par->extradata, &ptr,
4152  &size)) {
4153  param_write_hex(pb, "CodecPrivateData",
4154  ptr ? ptr : track->par->extradata,
4155  size);
4156  av_free(ptr);
4157  }
4158  param_write_string(pb, "FourCC", "H264");
4159  } else if (track->par->codec_id == AV_CODEC_ID_VC1) {
4160  param_write_string(pb, "FourCC", "WVC1");
4161  param_write_hex(pb, "CodecPrivateData", track->par->extradata,
4162  track->par->extradata_size);
4163  }
4164  param_write_int(pb, "MaxWidth", track->par->width);
4165  param_write_int(pb, "MaxHeight", track->par->height);
4166  param_write_int(pb, "DisplayWidth", track->par->width);
4167  param_write_int(pb, "DisplayHeight", track->par->height);
4168  } else {
4169  if (track->par->codec_id == AV_CODEC_ID_AAC) {
4170  switch (track->par->profile)
4171  {
4172  case FF_PROFILE_AAC_HE_V2:
4173  param_write_string(pb, "FourCC", "AACP");
4174  break;
4175  case FF_PROFILE_AAC_HE:
4176  param_write_string(pb, "FourCC", "AACH");
4177  break;
4178  default:
4179  param_write_string(pb, "FourCC", "AACL");
4180  }
4181  } else if (track->par->codec_id == AV_CODEC_ID_WMAPRO) {
4182  param_write_string(pb, "FourCC", "WMAP");
4183  }
4184  param_write_hex(pb, "CodecPrivateData", track->par->extradata,
4185  track->par->extradata_size);
4187  track->par->codec_id));
4188  param_write_int(pb, "Channels", track->par->channels);
4189  param_write_int(pb, "SamplingRate", track->par->sample_rate);
4190  param_write_int(pb, "BitsPerSample", 16);
4191  param_write_int(pb, "PacketSize", track->par->block_align ?
4192  track->par->block_align : 4);
4193  }
4194  avio_printf(pb, "</%s>\n", type);
4195  }
4196  avio_printf(pb, "</switch>\n");
4197  avio_printf(pb, "</body>\n");
4198  avio_printf(pb, "</smil>\n");
4199 
4200  return update_size(pb, pos);
4201 }
4202 
4204 {
4205  avio_wb32(pb, 16);
4206  ffio_wfourcc(pb, "mfhd");
4207  avio_wb32(pb, 0);
4208  avio_wb32(pb, mov->fragments);
4209  return 0;
4210 }
4211 
4212 static uint32_t get_sample_flags(MOVTrack *track, MOVIentry *entry)
4213 {
4216 }
4217 
4219  MOVTrack *track, int64_t moof_offset)
4220 {
4221  int64_t pos = avio_tell(pb);
4224  if (!track->entry) {
4225  flags |= MOV_TFHD_DURATION_IS_EMPTY;
4226  } else {
4227  flags |= MOV_TFHD_DEFAULT_FLAGS;
4228  }
4230  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
4231  if (mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) {
4232  flags &= ~MOV_TFHD_BASE_DATA_OFFSET;
4234  }
4235  /* CMAF requires all values to be explicit in tfhd atoms */
4236  if (mov->flags & FF_MOV_FLAG_CMAF)
4237  flags |= MOV_TFHD_STSD_ID;
4238 
4239  /* Don't set a default sample size, the silverlight player refuses
4240  * to play files with that set. Don't set a default sample duration,
4241  * WMP freaks out if it is set. Don't set a base data offset, PIFF
4242  * file format says it MUST NOT be set. */
4243  if (track->mode == MODE_ISM)
4246 
4247  avio_wb32(pb, 0); /* size placeholder */
4248  ffio_wfourcc(pb, "tfhd");
4249  avio_w8(pb, 0); /* version */
4250  avio_wb24(pb, flags);
4251 
4252  avio_wb32(pb, track->track_id); /* track-id */
4253  if (flags & MOV_TFHD_BASE_DATA_OFFSET)
4254  avio_wb64(pb, moof_offset);
4255  if (flags & MOV_TFHD_STSD_ID) {
4256  avio_wb32(pb, 1);
4257  }
4258  if (flags & MOV_TFHD_DEFAULT_DURATION) {
4259  track->default_duration = get_cluster_duration(track, 0);
4260  avio_wb32(pb, track->default_duration);
4261  }
4262  if (flags & MOV_TFHD_DEFAULT_SIZE) {
4263  track->default_size = track->entry ? track->cluster[0].size : 1;
4264  avio_wb32(pb, track->default_size);
4265  } else
4266  track->default_size = -1;
4267 
4268  if (flags & MOV_TFHD_DEFAULT_FLAGS) {
4269  /* Set the default flags based on the second sample, if available.
4270  * If the first sample is different, that can be signaled via a separate field. */
4271  if (track->entry > 1)
4272  track->default_sample_flags = get_sample_flags(track, &track->cluster[1]);
4273  else
4274  track->default_sample_flags =
4275  track->par->codec_type == AVMEDIA_TYPE_VIDEO ?
4278  avio_wb32(pb, track->default_sample_flags);
4279  }
4280 
4281  return update_size(pb, pos);
4282 }
4283 
4285  MOVTrack *track, int moof_size,
4286  int first, int end)
4287 {
4288  int64_t pos = avio_tell(pb);
4289  uint32_t flags = MOV_TRUN_DATA_OFFSET;
4290  int i;
4291 
4292  for (i = first; i < end; i++) {
4293  if (get_cluster_duration(track, i) != track->default_duration)
4294  flags |= MOV_TRUN_SAMPLE_DURATION;
4295  if (track->cluster[i].size != track->default_size)
4296  flags |= MOV_TRUN_SAMPLE_SIZE;
4297  if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
4298  flags |= MOV_TRUN_SAMPLE_FLAGS;
4299  }
4300  if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
4301  get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
4302  flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
4303  if (track->flags & MOV_TRACK_CTTS)
4304  flags |= MOV_TRUN_SAMPLE_CTS;
4305 
4306  avio_wb32(pb, 0); /* size placeholder */
4307  ffio_wfourcc(pb, "trun");
4309  avio_w8(pb, 1); /* version */
4310  else
4311  avio_w8(pb, 0); /* version */
4312  avio_wb24(pb, flags);
4313 
4314  avio_wb32(pb, end - first); /* sample count */
4315  if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
4317  !mov->first_trun)
4318  avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
4319  else
4320  avio_wb32(pb, moof_size + 8 + track->data_offset +
4321  track->cluster[first].pos); /* data offset */
4322  if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
4323  avio_wb32(pb, get_sample_flags(track, &track->cluster[first]));
4324 
4325  for (i = first; i < end; i++) {
4326  if (flags & MOV_TRUN_SAMPLE_DURATION)
4327  avio_wb32(pb, get_cluster_duration(track, i));
4328  if (flags & MOV_TRUN_SAMPLE_SIZE)
4329  avio_wb32(pb, track->cluster[i].size);
4330  if (flags & MOV_TRUN_SAMPLE_FLAGS)
4331  avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
4332  if (flags & MOV_TRUN_SAMPLE_CTS)
4333  avio_wb32(pb, track->cluster[i].cts);
4334  }
4335 
4336  mov->first_trun = 0;
4337  return update_size(pb, pos);
4338 }
4339 
4340 static int mov_write_tfxd_tag(AVIOContext *pb, MOVTrack *track)
4341 {
4342  int64_t pos = avio_tell(pb);
4343  static const uint8_t uuid[] = {
4344  0x6d, 0x1d, 0x9b, 0x05, 0x42, 0xd5, 0x44, 0xe6,
4345  0x80, 0xe2, 0x14, 0x1d, 0xaf, 0xf7, 0x57, 0xb2
4346  };
4347 
4348  avio_wb32(pb, 0); /* size placeholder */
4349  ffio_wfourcc(pb, "uuid");
4350  avio_write(pb, uuid, sizeof(uuid));
4351  avio_w8(pb, 1);
4352  avio_wb24(pb, 0);
4353  avio_wb64(pb, track->start_dts + track->frag_start +
4354  track->cluster[0].cts);
4355  avio_wb64(pb, track->end_pts -
4356  (track->cluster[0].dts + track->cluster[0].cts));
4357 
4358  return update_size(pb, pos);
4359 }
4360 
4362  MOVTrack *track, int entry)
4363 {
4364  int n = track->nb_frag_info - 1 - entry, i;
4365  int size = 8 + 16 + 4 + 1 + 16*n;
4366  static const uint8_t uuid[] = {
4367  0xd4, 0x80, 0x7e, 0xf2, 0xca, 0x39, 0x46, 0x95,
4368  0x8e, 0x54, 0x26, 0xcb, 0x9e, 0x46, 0xa7, 0x9f
4369  };
4370 
4371  if (entry < 0)
4372  return 0;
4373 
4374  avio_seek(pb, track->frag_info[entry].tfrf_offset, SEEK_SET);
4375  avio_wb32(pb, size);
4376  ffio_wfourcc(pb, "uuid");
4377  avio_write(pb, uuid, sizeof(uuid));
4378  avio_w8(pb, 1);
4379  avio_wb24(pb, 0);
4380  avio_w8(pb, n);
4381  for (i = 0; i < n; i++) {
4382  int index = entry + 1 + i;
4383  avio_wb64(pb, track->frag_info[index].time);
4384  avio_wb64(pb, track->frag_info[index].duration);
4385  }
4386  if (n < mov->ism_lookahead) {
4387  int free_size = 16 * (mov->ism_lookahead - n);
4388  avio_wb32(pb, free_size);
4389  ffio_wfourcc(pb, "free");
4390  ffio_fill(pb, 0, free_size - 8);
4391  }
4392 
4393  return 0;
4394 }
4395 
4397  MOVTrack *track)
4398 {
4399  int64_t pos = avio_tell(pb);
4400  int i;
4401  for (i = 0; i < mov->ism_lookahead; i++) {
4402  /* Update the tfrf tag for the last ism_lookahead fragments,
4403  * nb_frag_info - 1 is the next fragment to be written. */
4404  mov_write_tfrf_tag(pb, mov, track, track->nb_frag_info - 2 - i);
4405  }
4406  avio_seek(pb, pos, SEEK_SET);
4407  return 0;
4408 }
4409 
4410 static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
4411