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 "config_components.h"
25 
26 #include <stdint.h>
27 #include <inttypes.h>
28 
29 #include "movenc.h"
30 #include "avformat.h"
31 #include "avio_internal.h"
32 #include "dovi_isom.h"
33 #include "riff.h"
34 #include "avio.h"
35 #include "iamf_writer.h"
36 #include "isom.h"
37 #include "av1.h"
38 #include "avc.h"
39 #include "evc.h"
40 #include "libavcodec/ac3_parser_internal.h"
41 #include "libavcodec/dnxhddata.h"
42 #include "libavcodec/flac.h"
43 #include "libavcodec/get_bits.h"
44 
45 #include "libavcodec/internal.h"
46 #include "libavcodec/put_bits.h"
47 #include "libavcodec/vc1_common.h"
48 #include "libavcodec/raw.h"
49 #include "internal.h"
50 #include "libavutil/avstring.h"
51 #include "libavutil/channel_layout.h"
52 #include "libavutil/csp.h"
53 #include "libavutil/intfloat.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/libm.h"
56 #include "libavutil/mem.h"
57 #include "libavutil/opt.h"
58 #include "libavutil/dict.h"
59 #include "libavutil/pixdesc.h"
60 #include "libavutil/stereo3d.h"
61 #include "libavutil/timecode.h"
62 #include "libavutil/dovi_meta.h"
63 #include "libavutil/uuid.h"
64 #include "hevc.h"
65 #include "rtpenc.h"
66 #include "nal.h"
67 #include "mov_chan.h"
68 #include "movenc_ttml.h"
69 #include "mux.h"
70 #include "rawutils.h"
71 #include "ttmlenc.h"
72 #include "version.h"
73 #include "vpcc.h"
74 #include "vvc.h"
75 
76 static const AVOption options[] = {
77  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
78  { "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},
79  { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
80  { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
81  { "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 },
82  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
83  { "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 },
84  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
85  { "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},
86  { "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},
87  { "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},
88  { "ism_lookahead", "Number of lookahead entries for ISM files", offsetof(MOVMuxContext, ism_lookahead), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 255, AV_OPT_FLAG_ENCODING_PARAM},
89  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "movflags" },
90  { "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, .unit = "movflags" },
91  { "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, .unit = "movflags" },
92  { "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, .unit = "movflags" },
93  { "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, .unit = "movflags" },
94  { "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, .unit = "movflags" },
95  { "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, .unit = "movflags" },
96  { "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, .unit = "movflags" },
97  { "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, .unit = "movflags" },
98  { "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, .unit = "movflags" },
99  { "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, .unit = "movflags" },
100  { "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, .unit = "movflags" },
101  { "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, .unit = "movflags" },
102  { "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, .unit = "movflags" },
103  { "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, .unit = 0 },
104  { "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, .unit = "movflags" },
105  { "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, .unit = "movflags" },
106  { "prefer_icc", "If writing colr atom prioritise usage of ICC profile if it exists in stream packet side data", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_PREFER_ICC}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "movflags" },
107  { "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, .unit = "movflags" },
108  { "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, .unit = "movflags" },
109  { "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, .unit = "movflags" },
110  { "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, .unit = "movflags" },
111  { "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, .unit = "movflags" },
112  { "write_colr", "Write colr atom even if the color info is unspecified (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, .unit = "movflags" },
113  { "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, .unit = "movflags" },
114  { "hybrid_fragmented", "For recoverability, write a fragmented file that is converted to non-fragmented at the end.", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_HYBRID_FRAGMENTED}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "movflags" },
115  { "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},
116  { "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},
117  { "movie_timescale", "set movie timescale", offsetof(MOVMuxContext, movie_timescale), AV_OPT_TYPE_INT, {.i64 = MOV_TIMESCALE}, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
118  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
119  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
120  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
121  { "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},
122  { "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},
123  { "write_btrt", "force or disable writing btrt", offsetof(MOVMuxContext, write_btrt), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
124  { "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, .unit = "prft"},
125  { "pts", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_PTS}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, .unit = "prft"},
126  { "wallclock", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_WALLCLOCK}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, .unit = "prft"},
127  { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
128  { NULL },
129 };
130 
131 static const AVClass mov_isobmff_muxer_class = {
132  .class_name = "mov/mp4/tgp/psp/tg2/ipod/ismv/f4v muxer",
133  .item_name = av_default_item_name,
134  .option = options,
135  .version = LIBAVUTIL_VERSION_INT,
136 };
137 
138 static int get_moov_size(AVFormatContext *s);
139 static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt);
140 
141 static int utf8len(const uint8_t *b)
142 {
143  int len = 0;
144  int val;
145  while (*b) {
146  GET_UTF8(val, *b++, return -1;)
147  len++;
148  }
149  return len;
150 }
151 
152 //FIXME support 64 bit variant with wide placeholders
153 static int64_t update_size(AVIOContext *pb, int64_t pos)
154 {
155  int64_t curpos = avio_tell(pb);
156  avio_seek(pb, pos, SEEK_SET);
157  avio_wb32(pb, curpos - pos); /* rewrite size */
158  avio_seek(pb, curpos, SEEK_SET);
159 
160  return curpos - pos;
161 }
162 
163 static int co64_required(const MOVTrack *track)
164 {
165  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
166  return 1;
167  return 0;
168 }
169 
170 static int is_cover_image(const AVStream *st)
171 {
172  /* Eg. AV_DISPOSITION_ATTACHED_PIC | AV_DISPOSITION_TIMED_THUMBNAILS
173  * is encoded as sparse video track */
174  return st && st->disposition == AV_DISPOSITION_ATTACHED_PIC;
175 }
176 
177 static int rtp_hinting_needed(const AVStream *st)
178 {
179  /* Add hint tracks for each real audio and video stream */
180  if (is_cover_image(st))
181  return 0;
182  return st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
183  st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
184 }
185 
186 /* Chunk offset atom */
187 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
188 {
189  int i;
190  int mode64 = co64_required(track); // use 32 bit size variant if possible
191  int64_t pos = avio_tell(pb);
192  avio_wb32(pb, 0); /* size */
193  if (mode64)
194  ffio_wfourcc(pb, "co64");
195  else
196  ffio_wfourcc(pb, "stco");
197  avio_wb32(pb, 0); /* version & flags */
198  avio_wb32(pb, track->chunkCount); /* entry count */
199  for (i = 0; i < track->entry; i++) {
200  if (!track->cluster[i].chunkNum)
201  continue;
202  if (mode64 == 1)
203  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
204  else
205  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
206  }
207  return update_size(pb, pos);
208 }
209 
210 /* Sample size atom */
211 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
212 {
213  int equalChunks = 1;
214  int i, j, entries = 0, tst = -1, oldtst = -1;
215 
216  int64_t pos = avio_tell(pb);
217  avio_wb32(pb, 0); /* size */
218  ffio_wfourcc(pb, "stsz");
219  avio_wb32(pb, 0); /* version & flags */
220 
221  for (i = 0; i < track->entry; i++) {
222  tst = track->cluster[i].size / track->cluster[i].entries;
223  if (oldtst != -1 && tst != oldtst)
224  equalChunks = 0;
225  oldtst = tst;
226  entries += track->cluster[i].entries;
227  }
228  if (equalChunks && track->entry) {
229  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
230  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
231  avio_wb32(pb, sSize); // sample size
232  avio_wb32(pb, entries); // sample count
233  } else {
234  avio_wb32(pb, 0); // sample size
235  avio_wb32(pb, entries); // sample count
236  for (i = 0; i < track->entry; i++) {
237  for (j = 0; j < track->cluster[i].entries; j++) {
238  avio_wb32(pb, track->cluster[i].size /
239  track->cluster[i].entries);
240  }
241  }
242  }
243  return update_size(pb, pos);
244 }
245 
246 /* Sample to chunk atom */
247 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
248 {
249  int index = 0, oldval = -1, i;
250  int64_t entryPos, curpos;
251 
252  int64_t pos = avio_tell(pb);
253  avio_wb32(pb, 0); /* size */
254  ffio_wfourcc(pb, "stsc");
255  avio_wb32(pb, 0); // version & flags
256  entryPos = avio_tell(pb);
257  avio_wb32(pb, track->chunkCount); // entry count
258  for (i = 0; i < track->entry; i++) {
259  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
260  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
261  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
262  avio_wb32(pb, 0x1); // sample description index
263  oldval = track->cluster[i].samples_in_chunk;
264  index++;
265  }
266  }
267  curpos = avio_tell(pb);
268  avio_seek(pb, entryPos, SEEK_SET);
269  avio_wb32(pb, index); // rewrite size
270  avio_seek(pb, curpos, SEEK_SET);
271 
272  return update_size(pb, pos);
273 }
274 
275 /* Sync sample atom */
276 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
277 {
278  int64_t curpos, entryPos;
279  int i, index = 0;
280  int64_t pos = avio_tell(pb);
281  avio_wb32(pb, 0); // size
282  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
283  avio_wb32(pb, 0); // version & flags
284  entryPos = avio_tell(pb);
285  avio_wb32(pb, track->entry); // entry count
286  for (i = 0; i < track->entry; i++) {
287  if (track->cluster[i].flags & flag) {
288  avio_wb32(pb, i + 1);
289  index++;
290  }
291  }
292  curpos = avio_tell(pb);
293  avio_seek(pb, entryPos, SEEK_SET);
294  avio_wb32(pb, index); // rewrite size
295  avio_seek(pb, curpos, SEEK_SET);
296  return update_size(pb, pos);
297 }
298 
299 /* Sample dependency atom */
300 static int mov_write_sdtp_tag(AVIOContext *pb, MOVTrack *track)
301 {
302  int i;
303  uint8_t leading, dependent, reference, redundancy;
304  int64_t pos = avio_tell(pb);
305  avio_wb32(pb, 0); // size
306  ffio_wfourcc(pb, "sdtp");
307  avio_wb32(pb, 0); // version & flags
308  for (i = 0; i < track->entry; i++) {
309  dependent = MOV_SAMPLE_DEPENDENCY_YES;
310  leading = reference = redundancy = MOV_SAMPLE_DEPENDENCY_UNKNOWN;
311  if (track->cluster[i].flags & MOV_DISPOSABLE_SAMPLE) {
312  reference = MOV_SAMPLE_DEPENDENCY_NO;
313  }
314  if (track->cluster[i].flags & MOV_SYNC_SAMPLE) {
315  dependent = MOV_SAMPLE_DEPENDENCY_NO;
316  }
317  avio_w8(pb, (leading << 6) | (dependent << 4) |
318  (reference << 2) | redundancy);
319  }
320  return update_size(pb, pos);
321 }
322 
323 #if CONFIG_IAMFENC
324 static int mov_write_iacb_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
325 {
326  AVIOContext *dyn_bc;
327  int64_t pos = avio_tell(pb);
328  uint8_t *dyn_buf = NULL;
329  int dyn_size;
330  int ret = avio_open_dyn_buf(&dyn_bc);
331  if (ret < 0)
332  return ret;
333 
334  avio_wb32(pb, 0);
335  ffio_wfourcc(pb, "iacb");
336  avio_w8(pb, 1); // configurationVersion
337 
338  ret = ff_iamf_write_descriptors(track->iamf, dyn_bc, s);
339  if (ret < 0)
340  return ret;
341 
342  dyn_size = avio_close_dyn_buf(dyn_bc, &dyn_buf);
343  ffio_write_leb(pb, dyn_size);
344  avio_write(pb, dyn_buf, dyn_size);
345  av_free(dyn_buf);
346 
347  return update_size(pb, pos);
348 }
349 #endif
350 
351 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
352 {
353  avio_wb32(pb, 0x11); /* size */
354  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
355  else ffio_wfourcc(pb, "damr");
356  ffio_wfourcc(pb, "FFMP");
357  avio_w8(pb, 0); /* decoder version */
358 
359  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
360  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
361  avio_w8(pb, 0x01); /* Frames per sample */
362  return 0x11;
363 }
364 
365 struct eac3_info {
366  AVPacket *pkt;
367  uint8_t ec3_done;
368  uint8_t num_blocks;
369 
370  /* Layout of the EC3SpecificBox */
371  /* maximum bitrate */
372  uint16_t data_rate;
373  int8_t ac3_bit_rate_code;
374  /* number of independent substreams */
375  uint8_t num_ind_sub;
376  struct {
377  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
378  uint8_t fscod;
379  /* bit stream identification 5 bits */
380  uint8_t bsid;
381  /* one bit reserved */
382  /* audio service mixing (not supported yet) 1 bit */
383  /* bit stream mode 3 bits */
384  uint8_t bsmod;
385  /* audio coding mode 3 bits */
386  uint8_t acmod;
387  /* sub woofer on 1 bit */
388  uint8_t lfeon;
389  /* 3 bits reserved */
390  /* number of dependent substreams associated with this substream 4 bits */
391  uint8_t num_dep_sub;
392  /* channel locations of the dependent substream(s), if any, 9 bits */
393  uint16_t chan_loc;
394  /* if there is no dependent substream, then one bit reserved instead */
395  } substream[1]; /* TODO: support 8 independent substreams */
396 };
397 
398 static int mov_write_ac3_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
399 {
400  struct eac3_info *info = track->eac3_priv;
401  PutBitContext pbc;
402  uint8_t buf[3];
403 
404  if (!info || !info->ec3_done) {
405  av_log(s, AV_LOG_ERROR,
406  "Cannot write moov atom before AC3 packets."
407  " Set the delay_moov flag to fix this.\n");
408  return AVERROR(EINVAL);
409  }
410 
411  if (info->substream[0].bsid > 8) {
412  av_log(s, AV_LOG_ERROR,
413  "RealAudio AC-3/DolbyNet with bsid %d is not defined by the "
414  "ISOBMFF specification in ETSI TS 102 366!\n",
415  info->substream[0].bsid);
416  return AVERROR(EINVAL);
417  }
418 
419  if (info->ac3_bit_rate_code < 0) {
420  av_log(s, AV_LOG_ERROR,
421  "No valid AC3 bit rate code for data rate of %d!\n",
422  info->data_rate);
423  return AVERROR(EINVAL);
424  }
425 
426  avio_wb32(pb, 11);
427  ffio_wfourcc(pb, "dac3");
428 
429  init_put_bits(&pbc, buf, sizeof(buf));
430  put_bits(&pbc, 2, info->substream[0].fscod);
431  put_bits(&pbc, 5, info->substream[0].bsid);
432  put_bits(&pbc, 3, info->substream[0].bsmod);
433  put_bits(&pbc, 3, info->substream[0].acmod);
434  put_bits(&pbc, 1, info->substream[0].lfeon);
435  put_bits(&pbc, 5, info->ac3_bit_rate_code); // bit_rate_code
436  put_bits(&pbc, 5, 0); // reserved
437 
438  flush_put_bits(&pbc);
439  avio_write(pb, buf, sizeof(buf));
440 
441  return 11;
442 }
443 
444 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
445 {
446  AC3HeaderInfo *hdr = NULL;
447  struct eac3_info *info;
448  int num_blocks, ret;
449 
450  if (!track->eac3_priv) {
451  if (!(track->eac3_priv = av_mallocz(sizeof(*info))))
452  return AVERROR(ENOMEM);
453 
454  ((struct eac3_info *)track->eac3_priv)->ac3_bit_rate_code = -1;
455  }
456  info = track->eac3_priv;
457 
458  if (!info->pkt && !(info->pkt = av_packet_alloc()))
459  return AVERROR(ENOMEM);
460 
461  if ((ret = avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size)) < 0) {
462  if (ret == AVERROR(ENOMEM))
463  goto end;
464 
465  /* drop the packets until we see a good one */
466  if (!track->entry) {
467  av_log(mov->fc, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
468  ret = 0;
469  } else
470  ret = AVERROR_INVALIDDATA;
471  goto end;
472  }
473 
474  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
475  info->ac3_bit_rate_code = FFMAX(info->ac3_bit_rate_code,
476  hdr->ac3_bit_rate_code);
477  num_blocks = hdr->num_blocks;
478 
479  if (!info->ec3_done) {
480  /* AC-3 substream must be the first one */
481  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0) {
482  ret = AVERROR(EINVAL);
483  goto end;
484  }
485 
486  /* this should always be the case, given that our AC-3 parser
487  * concatenates dependent frames to their independent parent */
488  if (hdr->frame_type == EAC3_FRAME_TYPE_INDEPENDENT ||
489  hdr->frame_type == EAC3_FRAME_TYPE_AC3_CONVERT) {
490  /* substream ids must be incremental */
491  if (hdr->substreamid > info->num_ind_sub + 1) {
492  ret = AVERROR(EINVAL);
493  goto end;
494  }
495 
496  if (hdr->substreamid == info->num_ind_sub + 1) {
497  //info->num_ind_sub++;
498  avpriv_request_sample(mov->fc, "Multiple independent substreams");
499  ret = AVERROR_PATCHWELCOME;
500  goto end;
501  } else if (hdr->substreamid < info->num_ind_sub ||
502  hdr->substreamid == 0 && info->substream[0].bsid) {
503  info->ec3_done = 1;
504  goto concatenate;
505  }
506  } else {
507  if (hdr->substreamid != 0) {
508  avpriv_request_sample(mov->fc, "Multiple non EAC3 independent substreams");
509  ret = AVERROR_PATCHWELCOME;
510  goto end;
511  }
512  }
513 
514  /* fill the info needed for the "dec3" atom */
515  info->substream[hdr->substreamid].fscod = hdr->sr_code;
516  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
517  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
518  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
519  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
520 
521  if (track->par->codec_id == AV_CODEC_ID_AC3) {
522  // with AC-3 we only require the information of a single packet,
523  // so we can finish as soon as the basic values of the bit stream
524  // have been set to the track's informational structure.
525  info->ec3_done = 1;
526  goto concatenate;
527  }
528 
529  /* Parse dependent substream(s), if any */
530  if (pkt->size != hdr->frame_size) {
531  int cumul_size = hdr->frame_size;
532  int parent = hdr->substreamid;
533 
534  while (cumul_size != pkt->size) {
535  GetBitContext gbc;
536  int i;
537  ret = avpriv_ac3_parse_header(&hdr, pkt->data + cumul_size, pkt->size - cumul_size);
538  if (ret < 0)
539  goto end;
540  if (hdr->frame_type != EAC3_FRAME_TYPE_DEPENDENT) {
541  ret = AVERROR(EINVAL);
542  goto end;
543  }
544  info->substream[parent].num_dep_sub++;
545  ret /= 8;
546 
547  /* header is parsed up to lfeon, but custom channel map may be needed */
548  init_get_bits8(&gbc, pkt->data + cumul_size + ret, pkt->size - cumul_size - ret);
549  /* skip bsid */
550  skip_bits(&gbc, 5);
551  /* skip volume control params */
552  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
553  skip_bits(&gbc, 5); // skip dialog normalization
554  if (get_bits1(&gbc)) {
555  skip_bits(&gbc, 8); // skip compression gain word
556  }
557  }
558  /* get the dependent stream channel map, if exists */
559  if (get_bits1(&gbc))
560  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
561  else
562  info->substream[parent].chan_loc |= hdr->channel_mode;
563  cumul_size += hdr->frame_size;
564  }
565  }
566  }
567 
568 concatenate:
569  if (!info->num_blocks && num_blocks == 6) {
570  ret = pkt->size;
571  goto end;
572  }
573  else if (info->num_blocks + num_blocks > 6) {
574  ret = AVERROR_INVALIDDATA;
575  goto end;
576  }
577 
578  if (!info->num_blocks) {
579  ret = av_packet_ref(info->pkt, pkt);
580  if (!ret)
581  info->num_blocks = num_blocks;
582  goto end;
583  } else {
584  if ((ret = av_grow_packet(info->pkt, pkt->size)) < 0)
585  goto end;
586  memcpy(info->pkt->data + info->pkt->size - pkt->size, pkt->data, pkt->size);
587  info->num_blocks += num_blocks;
588  info->pkt->duration += pkt->duration;
589  if (info->num_blocks != 6)
590  goto end;
591  av_packet_unref(pkt);
592  av_packet_move_ref(pkt, info->pkt);
593  info->num_blocks = 0;
594  }
595  ret = pkt->size;
596 
597 end:
598  av_free(hdr);
599 
600  return ret;
601 }
602 
603 static int mov_write_eac3_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
604 {
605  PutBitContext pbc;
606  uint8_t *buf;
607  struct eac3_info *info;
608  int size, i;
609 
610  if (!track->eac3_priv) {
611  av_log(s, AV_LOG_ERROR,
612  "Cannot write moov atom before EAC3 packets parsed.\n");
613  return AVERROR(EINVAL);
614  }
615 
616  info = track->eac3_priv;
617  size = 2 + ((34 * (info->num_ind_sub + 1) + 7) >> 3);
618  buf = av_malloc(size);
619  if (!buf) {
620  return AVERROR(ENOMEM);
621  }
622 
623  init_put_bits(&pbc, buf, size);
624  put_bits(&pbc, 13, info->data_rate);
625  put_bits(&pbc, 3, info->num_ind_sub);
626  for (i = 0; i <= info->num_ind_sub; i++) {
627  put_bits(&pbc, 2, info->substream[i].fscod);
628  put_bits(&pbc, 5, info->substream[i].bsid);
629  put_bits(&pbc, 1, 0); /* reserved */
630  put_bits(&pbc, 1, 0); /* asvc */
631  put_bits(&pbc, 3, info->substream[i].bsmod);
632  put_bits(&pbc, 3, info->substream[i].acmod);
633  put_bits(&pbc, 1, info->substream[i].lfeon);
634  put_bits(&pbc, 5, 0); /* reserved */
635  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
636  if (!info->substream[i].num_dep_sub) {
637  put_bits(&pbc, 1, 0); /* reserved */
638  } else {
639  put_bits(&pbc, 9, info->substream[i].chan_loc);
640  }
641  }
642  flush_put_bits(&pbc);
643  size = put_bytes_output(&pbc);
644 
645  avio_wb32(pb, size + 8);
646  ffio_wfourcc(pb, "dec3");
647  avio_write(pb, buf, size);
648 
649  av_free(buf);
650 
651  return size;
652 }
653 
654 /**
655  * This function writes extradata "as is".
656  * Extradata must be formatted like a valid atom (with size and tag).
657  */
658 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
659 {
660  avio_write(pb, track->par->extradata, track->par->extradata_size);
661  return track->par->extradata_size;
662 }
663 
664 static int mov_write_enda_tag(AVIOContext *pb)
665 {
666  avio_wb32(pb, 10);
667  ffio_wfourcc(pb, "enda");
668  avio_wb16(pb, 1); /* little endian */
669  return 10;
670 }
671 
672 static int mov_write_enda_tag_be(AVIOContext *pb)
673 {
674  avio_wb32(pb, 10);
675  ffio_wfourcc(pb, "enda");
676  avio_wb16(pb, 0); /* big endian */
677  return 10;
678 }
679 
680 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
681 {
682  int i = 3;
683  avio_w8(pb, tag);
684  for (; i > 0; i--)
685  avio_w8(pb, (size >> (7 * i)) | 0x80);
686  avio_w8(pb, size & 0x7F);
687 }
688 
689 static unsigned compute_avg_bitrate(MOVTrack *track)
690 {
691  uint64_t size = 0;
692  int i;
693  if (!track->track_duration)
694  return 0;
695  for (i = 0; i < track->entry; i++)
696  size += track->cluster[i].size;
697  return size * 8 * track->timescale / track->track_duration;
698 }
699 
700 struct mpeg4_bit_rate_values {
701  uint32_t buffer_size; ///< Size of the decoding buffer for the elementary stream in bytes.
702  uint32_t max_bit_rate; ///< Maximum rate in bits/second over any window of one second.
703  uint32_t avg_bit_rate; ///< Average rate in bits/second over the entire presentation.
704 };
705 
706 static struct mpeg4_bit_rate_values calculate_mpeg4_bit_rates(MOVTrack *track)
707 {
708  const AVPacketSideData *sd = track->st ?
709  av_packet_side_data_get(track->st->codecpar->coded_side_data,
710  track->st->codecpar->nb_coded_side_data,
711  AV_PKT_DATA_CPB_PROPERTIES) : NULL;
712  AVCPBProperties *props = sd ? (AVCPBProperties *)sd->data : NULL;
713  struct mpeg4_bit_rate_values bit_rates = { 0 };
714 
715  bit_rates.avg_bit_rate = compute_avg_bitrate(track);
716  if (!bit_rates.avg_bit_rate) {
717  // if the average bit rate cannot be calculated at this point, such as
718  // in the case of fragmented MP4, utilize the following values as
719  // fall-back in priority order:
720  //
721  // 1. average bit rate property
722  // 2. bit rate (usually average over the whole clip)
723  // 3. maximum bit rate property
724 
725  if (props && props->avg_bitrate) {
726  bit_rates.avg_bit_rate = props->avg_bitrate;
727  } else if (track->par->bit_rate) {
728  bit_rates.avg_bit_rate = track->par->bit_rate;
729  } else if (props && props->max_bitrate) {
730  bit_rates.avg_bit_rate = props->max_bitrate;
731  }
732  }
733 
734  // (FIXME should be max rate in any 1 sec window)
735  bit_rates.max_bit_rate = FFMAX(track->par->bit_rate,
736  bit_rates.avg_bit_rate);
737 
738  // utilize values from properties if we have them available
739  if (props) {
740  // no avg_bitrate signals that the track is VBR
741  if (!props->avg_bitrate)
742  bit_rates.avg_bit_rate = props->avg_bitrate;
743  bit_rates.max_bit_rate = FFMAX(bit_rates.max_bit_rate,
744  props->max_bitrate);
745  bit_rates.buffer_size = props->buffer_size / 8;
746  }
747 
748  return bit_rates;
749 }
750 
751 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
752 {
753  struct mpeg4_bit_rate_values bit_rates = calculate_mpeg4_bit_rates(track);
754  int64_t pos = avio_tell(pb);
755  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
756 
757  avio_wb32(pb, 0); // size
758  ffio_wfourcc(pb, "esds");
759  avio_wb32(pb, 0); // Version
760 
761  // ES descriptor
762  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
763  avio_wb16(pb, track->track_id);
764  avio_w8(pb, 0x00); // flags (= no flags)
765 
766  // DecoderConfig descriptor
767  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
768 
769  // Object type indication
770  if ((track->par->codec_id == AV_CODEC_ID_MP2 ||
771  track->par->codec_id == AV_CODEC_ID_MP3) &&
772  track->par->sample_rate > 24000)
773  avio_w8(pb, 0x6B); // 11172-3
774  else
775  avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->par->codec_id));
776 
777  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
778  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
779  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
780  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
781  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
782  avio_w8(pb, 0x15); // flags (= Audiostream)
783  else
784  avio_w8(pb, 0x11); // flags (= Visualstream)
785 
786  avio_wb24(pb, bit_rates.buffer_size); // Buffersize DB
787  avio_wb32(pb, bit_rates.max_bit_rate); // maxbitrate
788  avio_wb32(pb, bit_rates.avg_bit_rate);
789 
790  if (track->vos_len) {
791  // DecoderSpecific info descriptor
792  put_descr(pb, 0x05, track->vos_len);
793  avio_write(pb, track->vos_data, track->vos_len);
794  }
795 
796  // SL descriptor
797  put_descr(pb, 0x06, 1);
798  avio_w8(pb, 0x02);
799  return update_size(pb, pos);
800 }
801 
802 static int mov_pcm_le_gt16(enum AVCodecID codec_id)
803 {
804  return codec_id == AV_CODEC_ID_PCM_S24LE ||
805  codec_id == AV_CODEC_ID_PCM_S32LE ||
806  codec_id == AV_CODEC_ID_PCM_F32LE ||
807  codec_id == AV_CODEC_ID_PCM_F64LE;
808 }
809 
810 static int mov_pcm_be_gt16(enum AVCodecID codec_id)
811 {
812  return codec_id == AV_CODEC_ID_PCM_S24BE ||
813  codec_id == AV_CODEC_ID_PCM_S32BE ||
814  codec_id == AV_CODEC_ID_PCM_F32BE ||
815  codec_id == AV_CODEC_ID_PCM_F64BE;
816 }
817 
818 static int mov_write_ms_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
819 {
820  int ret;
821  int64_t pos = avio_tell(pb);
822  avio_wb32(pb, 0);
823  avio_wl32(pb, track->tag); // store it byteswapped
824  track->par->codec_tag = av_bswap16(track->tag >> 16);
825  if ((ret = ff_put_wav_header(s, pb, track->par, 0)) < 0)
826  return ret;
827  return update_size(pb, pos);
828 }
829 
830 static int mov_write_wfex_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
831 {
832  int ret;
833  int64_t pos = avio_tell(pb);
834  avio_wb32(pb, 0);
835  ffio_wfourcc(pb, "wfex");
836  if ((ret = ff_put_wav_header(s, pb, track->st->codecpar, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
837  return ret;
838  return update_size(pb, pos);
839 }
840 
841 static int mov_write_dfla_tag(AVIOContext *pb, MOVTrack *track)
842 {
843  int64_t pos = avio_tell(pb);
844  avio_wb32(pb, 0);
845  ffio_wfourcc(pb, "dfLa");
846  avio_w8(pb, 0); /* version */
847  avio_wb24(pb, 0); /* flags */
848 
849  /* Expect the encoder to pass a METADATA_BLOCK_TYPE_STREAMINFO. */
850  if (track->par->extradata_size != FLAC_STREAMINFO_SIZE)
851  return AVERROR_INVALIDDATA;
852 
853  /* TODO: Write other METADATA_BLOCK_TYPEs if the encoder makes them available. */
854  avio_w8(pb, 1 << 7 | FLAC_METADATA_TYPE_STREAMINFO); /* LastMetadataBlockFlag << 7 | BlockType */
855  avio_wb24(pb, track->par->extradata_size); /* Length */
856  avio_write(pb, track->par->extradata, track->par->extradata_size); /* BlockData[Length] */
857 
858  return update_size(pb, pos);
859 }
860 
861 static int mov_write_dops_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
862 {
863  int64_t pos = avio_tell(pb);
864  int channels, channel_map;
865  avio_wb32(pb, 0);
866  ffio_wfourcc(pb, "dOps");
867  avio_w8(pb, 0); /* Version */
868  if (track->par->extradata_size < 19) {
869  av_log(s, AV_LOG_ERROR, "invalid extradata size\n");
870  return AVERROR_INVALIDDATA;
871  }
872  /* extradata contains an Ogg OpusHead, other than byte-ordering and
873  OpusHead's preceeding magic/version, OpusSpecificBox is currently
874  identical. */
875  channels = AV_RB8(track->par->extradata + 9);
876  channel_map = AV_RB8(track->par->extradata + 18);
877 
878  avio_w8(pb, channels); /* OuputChannelCount */
879  avio_wb16(pb, AV_RL16(track->par->extradata + 10)); /* PreSkip */
880  avio_wb32(pb, AV_RL32(track->par->extradata + 12)); /* InputSampleRate */
881  avio_wb16(pb, AV_RL16(track->par->extradata + 16)); /* OutputGain */
882  avio_w8(pb, channel_map); /* ChannelMappingFamily */
883  /* Write the rest of the header out without byte-swapping. */
884  if (channel_map) {
885  if (track->par->extradata_size < 21 + channels) {
886  av_log(s, AV_LOG_ERROR, "invalid extradata size\n");
887  return AVERROR_INVALIDDATA;
888  }
889  avio_write(pb, track->par->extradata + 19, 2 + channels); /* ChannelMappingTable */
890  }
891 
892  return update_size(pb, pos);
893 }
894 
895 static int mov_write_dmlp_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
896 {
897  int64_t pos = avio_tell(pb);
898  int length;
899  avio_wb32(pb, 0);
900  ffio_wfourcc(pb, "dmlp");
901 
902  if (track->vos_len < 20) {
903  av_log(s, AV_LOG_ERROR,
904  "Cannot write moov atom before TrueHD packets."
905  " Set the delay_moov flag to fix this.\n");
906  return AVERROR(EINVAL);
907  }
908 
909  length = (AV_RB16(track->vos_data) & 0xFFF) * 2;
910  if (length < 20 || length > track->vos_len)
911  return AVERROR_INVALIDDATA;
912 
913  // Only TrueHD is supported
914  if (AV_RB32(track->vos_data + 4) != 0xF8726FBA)
915  return AVERROR_INVALIDDATA;
916 
917  avio_wb32(pb, AV_RB32(track->vos_data + 8)); /* format_info */
918  avio_wb16(pb, AV_RB16(track->vos_data + 18) << 1); /* peak_data_rate */
919  avio_wb32(pb, 0); /* reserved */
920 
921  return update_size(pb, pos);
922 }
923 
924 static int mov_write_SA3D_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
925 {
926  const AVDictionaryEntry *str = av_dict_get(track->st->metadata, "SA3D", NULL, 0);
927  AVChannelLayout ch_layout = { 0 };
928  int64_t pos;
929  int ambisonic_order, ambi_channels, non_diegetic_channels;
930  int i, ret;
931 
932  if (!str)
933  return 0;
934 
935  ret = av_channel_layout_from_string(&ch_layout, str->value);
936  if (ret < 0) {
937  if (ret == AVERROR(EINVAL)) {
938 invalid:
939  av_log(s, AV_LOG_ERROR, "Invalid SA3D layout: \"%s\"\n", str->value);
940  ret = 0;
941  }
942  av_channel_layout_uninit(&ch_layout);
943  return ret;
944  }
945 
946  if (track->st->codecpar->ch_layout.nb_channels != ch_layout.nb_channels)
947  goto invalid;
948 
949  ambisonic_order = av_channel_layout_ambisonic_order(&ch_layout);
950  if (ambisonic_order < 0)
951  goto invalid;
952 
953  ambi_channels = (ambisonic_order + 1LL) * (ambisonic_order + 1LL);
954  non_diegetic_channels = ch_layout.nb_channels - ambi_channels;
955  if (non_diegetic_channels &&
956  (non_diegetic_channels != 2 ||
957  av_channel_layout_subset(&ch_layout, AV_CH_LAYOUT_STEREO) != AV_CH_LAYOUT_STEREO))
958  goto invalid;
959 
960  av_log(s, AV_LOG_VERBOSE, "Inserting SA3D box with layout: \"%s\"\n", str->value);
961 
962  pos = avio_tell(pb);
963 
964  avio_wb32(pb, 0); // Size
965  ffio_wfourcc(pb, "SA3D");
966  avio_w8(pb, 0); // version
967  avio_w8(pb, (!!non_diegetic_channels) << 7); // head_locked_stereo and ambisonic_type
968  avio_wb32(pb, ambisonic_order); // ambisonic_order
969  avio_w8(pb, 0); // ambisonic_channel_ordering
970  avio_w8(pb, 0); // ambisonic_normalization
971  avio_wb32(pb, ch_layout.nb_channels); // num_channels
972  for (i = 0; i < ambi_channels; i++)
973  avio_wb32(pb, av_channel_layout_channel_from_index(&ch_layout, i) - AV_CHAN_AMBISONIC_BASE);
974  for (; i < ch_layout.nb_channels; i++)
975  avio_wb32(pb, av_channel_layout_channel_from_index(&ch_layout, i) + ambi_channels);
976 
977  av_channel_layout_uninit(&ch_layout);
978 
979  return update_size(pb, pos);
980 }
981 
982 static int mov_write_chan_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
983 {
984  uint32_t layout_tag, bitmap, *channel_desc;
985  int64_t pos = avio_tell(pb);
986  int num_desc, ret;
987 
988  if (track->multichannel_as_mono)
989  return 0;
990 
991  ret = ff_mov_get_channel_layout_tag(track->par, &layout_tag,
992  &bitmap, &channel_desc);
993 
994  if (ret < 0) {
995  if (ret == AVERROR(ENOSYS)) {
996  av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "
997  "lack of channel information\n");
998  ret = 0;
999  }
1000 
1001  return ret;
1002  }
1003 
1004  if (layout_tag == MOV_CH_LAYOUT_MONO && track->mono_as_fc > 0) {
1005  av_assert0(!channel_desc);
1006  channel_desc = av_malloc(sizeof(*channel_desc));
1007  if (!channel_desc)
1008  return AVERROR(ENOMEM);
1009 
1010  layout_tag = 0;
1011  bitmap = 0;
1012  *channel_desc = 3; // channel label "Center"
1013  }
1014 
1015  num_desc = layout_tag ? 0 : track->par->ch_layout.nb_channels;
1016 
1017  avio_wb32(pb, 0); // Size
1018  ffio_wfourcc(pb, "chan"); // Type
1019  avio_w8(pb, 0); // Version
1020  avio_wb24(pb, 0); // Flags
1021  avio_wb32(pb, layout_tag); // mChannelLayoutTag
1022  avio_wb32(pb, bitmap); // mChannelBitmap
1023  avio_wb32(pb, num_desc); // mNumberChannelDescriptions
1024 
1025  for (int i = 0; i < num_desc; i++) {
1026  avio_wb32(pb, channel_desc[i]); // mChannelLabel
1027  avio_wb32(pb, 0); // mChannelFlags
1028  avio_wl32(pb, 0); // mCoordinates[0]
1029  avio_wl32(pb, 0); // mCoordinates[1]
1030  avio_wl32(pb, 0); // mCoordinates[2]
1031  }
1032 
1033  av_free(channel_desc);
1034 
1035  return update_size(pb, pos);
1036 }
1037 
1038 static int mov_write_wave_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1039 {
1040  int64_t pos = avio_tell(pb);
1041 
1042  avio_wb32(pb, 0); /* size */
1043  ffio_wfourcc(pb, "wave");
1044 
1045  if (track->par->codec_id != AV_CODEC_ID_QDM2) {
1046  avio_wb32(pb, 12); /* size */
1047  ffio_wfourcc(pb, "frma");
1048  avio_wl32(pb, track->tag);
1049  }
1050 
1051  if (track->par->codec_id == AV_CODEC_ID_AAC) {
1052  /* useless atom needed by mplayer, ipod, not needed by quicktime */
1053  avio_wb32(pb, 12); /* size */
1054  ffio_wfourcc(pb, "mp4a");
1055  avio_wb32(pb, 0);
1056  mov_write_esds_tag(pb, track);
1057  } else if (mov_pcm_le_gt16(track->par->codec_id)) {
1058  mov_write_enda_tag(pb);
1059  } else if (mov_pcm_be_gt16(track->par->codec_id)) {
1060  mov_write_enda_tag_be(pb);
1061  } else if (track->par->codec_id == AV_CODEC_ID_AMR_NB) {
1062  mov_write_amr_tag(pb, track);
1063  } else if (track->par->codec_id == AV_CODEC_ID_AC3) {
1064  mov_write_ac3_tag(s, pb, track);
1065  } else if (track->par->codec_id == AV_CODEC_ID_EAC3) {
1066  mov_write_eac3_tag(s, pb, track);
1067  } else if (track->par->codec_id == AV_CODEC_ID_ALAC ||
1068  track->par->codec_id == AV_CODEC_ID_QDM2) {
1069  mov_write_extradata_tag(pb, track);
1070  } else if (track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1071  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
1072  mov_write_ms_tag(s, pb, track);
1073  }
1074 
1075  avio_wb32(pb, 8); /* size */
1076  avio_wb32(pb, 0); /* null tag */
1077 
1078  return update_size(pb, pos);
1079 }
1080 
1081 static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
1082 {
1083  uint8_t *unescaped;
1084  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
1085  int unescaped_size, seq_found = 0;
1086  int level = 0, interlace = 0;
1087  int packet_seq = track->vc1_info.packet_seq;
1088  int packet_entry = track->vc1_info.packet_entry;
1089  int slices = track->vc1_info.slices;
1090  PutBitContext pbc;
1091 
1092  if (track->start_dts == AV_NOPTS_VALUE) {
1093  /* No packets written yet, vc1_info isn't authoritative yet. */
1094  /* Assume inline sequence and entry headers. */
1095  packet_seq = packet_entry = 1;
1096  av_log(NULL, AV_LOG_WARNING,
1097  "moov atom written before any packets, unable to write correct "
1098  "dvc1 atom. Set the delay_moov flag to fix this.\n");
1099  }
1100 
1101  unescaped = av_mallocz(track->vos_len + AV_INPUT_BUFFER_PADDING_SIZE);
1102  if (!unescaped)
1103  return AVERROR(ENOMEM);
1104  start = find_next_marker(track->vos_data, end);
1105  for (next = start; next < end; start = next) {
1106  GetBitContext gb;
1107  int size;
1108  next = find_next_marker(start + 4, end);
1109  size = next - start - 4;
1110  if (size <= 0)
1111  continue;
1112  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
1113  init_get_bits(&gb, unescaped, 8 * unescaped_size);
1114  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
1115  int profile = get_bits(&gb, 2);
1116  if (profile != PROFILE_ADVANCED) {
1117  av_free(unescaped);
1118  return AVERROR(ENOSYS);
1119  }
1120  seq_found = 1;
1121  level = get_bits(&gb, 3);
1122  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
1123  * width, height */
1124  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
1125  skip_bits(&gb, 1); /* broadcast */
1126  interlace = get_bits1(&gb);
1127  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
1128  }
1129  }
1130  if (!seq_found) {
1131  av_free(unescaped);
1132  return AVERROR(ENOSYS);
1133  }
1134 
1135  init_put_bits(&pbc, buf, 7);
1136  /* VC1DecSpecStruc */
1137  put_bits(&pbc, 4, 12); /* profile - advanced */
1138  put_bits(&pbc, 3, level);
1139  put_bits(&pbc, 1, 0); /* reserved */
1140  /* VC1AdvDecSpecStruc */
1141  put_bits(&pbc, 3, level);
1142  put_bits(&pbc, 1, 0); /* cbr */
1143  put_bits(&pbc, 6, 0); /* reserved */
1144  put_bits(&pbc, 1, !interlace); /* no interlace */
1145  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
1146  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
1147  put_bits(&pbc, 1, !slices); /* no slice code */
1148  put_bits(&pbc, 1, 0); /* no bframe */
1149  put_bits(&pbc, 1, 0); /* reserved */
1150 
1151  /* framerate */
1152  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
1153  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
1154  else
1155  put_bits32(&pbc, 0xffffffff);
1156 
1157  flush_put_bits(&pbc);
1158 
1159  av_free(unescaped);
1160 
1161  return 0;
1162 }
1163 
1164 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
1165 {
1166  uint8_t buf[7] = { 0 };
1167  int ret;
1168 
1169  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
1170  return ret;
1171 
1172  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
1173  ffio_wfourcc(pb, "dvc1");
1174  avio_write(pb, buf, sizeof(buf));
1175  avio_write(pb, track->vos_data, track->vos_len);
1176 
1177  return 0;
1178 }
1179 
1180 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
1181 {
1182  avio_wb32(pb, track->vos_len + 8);
1183  ffio_wfourcc(pb, "glbl");
1184  avio_write(pb, track->vos_data, track->vos_len);
1185  return 8 + track->vos_len;
1186 }
1187 
1188 /**
1189  * Compute flags for 'lpcm' tag.
1190  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1191  */
1192 static int mov_get_lpcm_flags(enum AVCodecID codec_id)
1193 {
1194  switch (codec_id) {
1195  case AV_CODEC_ID_PCM_F32BE:
1196  case AV_CODEC_ID_PCM_F64BE:
1197  return 11;
1198  case AV_CODEC_ID_PCM_F32LE:
1199  case AV_CODEC_ID_PCM_F64LE:
1200  return 9;
1201  case AV_CODEC_ID_PCM_U8:
1202  return 10;
1203  case AV_CODEC_ID_PCM_S16BE:
1204  case AV_CODEC_ID_PCM_S24BE:
1205  case AV_CODEC_ID_PCM_S32BE:
1206  return 14;
1207  case AV_CODEC_ID_PCM_S8:
1208  case AV_CODEC_ID_PCM_S16LE:
1209  case AV_CODEC_ID_PCM_S24LE:
1210  case AV_CODEC_ID_PCM_S32LE:
1211  return 12;
1212  default:
1213  return 0;
1214  }
1215 }
1216 
1217 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
1218 {
1219  int64_t next_dts;
1220 
1221  if (cluster_idx >= track->entry)
1222  return 0;
1223 
1224  if (cluster_idx + 1 == track->entry)
1225  next_dts = track->track_duration + track->start_dts;
1226  else
1227  next_dts = track->cluster[cluster_idx + 1].dts;
1228 
1229  next_dts -= track->cluster[cluster_idx].dts;
1230 
1231  av_assert0(next_dts >= 0);
1232  av_assert0(next_dts <= INT_MAX);
1233 
1234  return next_dts;
1235 }
1236 
1237 static int get_samples_per_packet(MOVTrack *track)
1238 {
1239  int i, first_duration;
1240 
1241  /* use 1 for raw PCM */
1242  if (!track->audio_vbr)
1243  return 1;
1244 
1245  /* check to see if duration is constant for all clusters */
1246  if (!track->entry)
1247  return 0;
1248  first_duration = get_cluster_duration(track, 0);
1249  for (i = 1; i < track->entry; i++) {
1250  if (get_cluster_duration(track, i) != first_duration)
1251  return 0;
1252  }
1253  return first_duration;
1254 }
1255 
1256 static int mov_write_btrt_tag(AVIOContext *pb, MOVTrack *track)
1257 {
1258  int64_t pos = avio_tell(pb);
1259  struct mpeg4_bit_rate_values bit_rates = calculate_mpeg4_bit_rates(track);
1260  if (!bit_rates.max_bit_rate && !bit_rates.avg_bit_rate &&
1261  !bit_rates.buffer_size)
1262  // no useful data to be written, skip
1263  return 0;
1264 
1265  avio_wb32(pb, 0); /* size */
1266  ffio_wfourcc(pb, "btrt");
1267 
1268  avio_wb32(pb, bit_rates.buffer_size);
1269  avio_wb32(pb, bit_rates.max_bit_rate);
1270  avio_wb32(pb, bit_rates.avg_bit_rate);
1271 
1272  return update_size(pb, pos);
1273 }
1274 
1275 static int mov_write_chnl_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1276 {
1277  int64_t pos = avio_tell(pb);
1278  int config = 0;
1279  int ret;
1280  uint8_t *speaker_pos = NULL;
1281  const AVChannelLayout *layout = &track->par->ch_layout;
1282 
1283  ret = ff_mov_get_channel_config_from_layout(layout, &config);
1284  if (ret || !config) {
1285  config = 0;
1286  speaker_pos = av_malloc(layout->nb_channels);
1287  if (!speaker_pos)
1288  return AVERROR(ENOMEM);
1289  ret = ff_mov_get_channel_positions_from_layout(layout,
1290  speaker_pos, layout->nb_channels);
1291  if (ret) {
1292  char buf[128] = {0};
1293 
1294  av_freep(&speaker_pos);
1295  av_channel_layout_describe(layout, buf, sizeof(buf));
1296  av_log(s, AV_LOG_ERROR, "unsupported channel layout %s\n", buf);
1297  return ret;
1298  }
1299  }
1300 
1301  avio_wb32(pb, 0); /* size */
1302  ffio_wfourcc(pb, "chnl");
1303  avio_wb32(pb, 0); /* version & flags */
1304 
1305  avio_w8(pb, 1); /* stream_structure */
1306  avio_w8(pb, config);
1307  if (config) {
1308  avio_wb64(pb, 0);
1309  } else {
1310  avio_write(pb, speaker_pos, layout->nb_channels);
1311  av_freep(&speaker_pos);
1312  }
1313 
1314  return update_size(pb, pos);
1315 }
1316 
1317 static int mov_write_pcmc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1318 {
1319  int64_t pos = avio_tell(pb);
1320  int format_flags;
1321  int sample_size;
1322 
1323  avio_wb32(pb, 0); /* size */
1324  ffio_wfourcc(pb, "pcmC");
1325  avio_wb32(pb, 0); /* version & flags */
1326 
1327  /* 0x01: indicates little-endian format */
1328  format_flags = (track->par->codec_id == AV_CODEC_ID_PCM_F32LE ||
1329  track->par->codec_id == AV_CODEC_ID_PCM_F64LE ||
1330  track->par->codec_id == AV_CODEC_ID_PCM_S16LE ||
1331  track->par->codec_id == AV_CODEC_ID_PCM_S24LE ||
1332  track->par->codec_id == AV_CODEC_ID_PCM_S32LE);
1333  avio_w8(pb, format_flags);
1334  sample_size = track->par->bits_per_raw_sample;
1335  if (!sample_size)
1336  sample_size = av_get_exact_bits_per_sample(track->par->codec_id);
1337  av_assert0(sample_size);
1338  avio_w8(pb, sample_size);
1339 
1340  return update_size(pb, pos);
1341 }
1342 
1343 static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
1344 {
1345  int64_t pos = avio_tell(pb);
1346  int version = 0;
1347  uint32_t tag = track->tag;
1348  int ret = 0;
1349 
1350  if (track->mode == MODE_MOV) {
1351  if (track->timescale > UINT16_MAX || !track->par->ch_layout.nb_channels) {
1352  if (mov_get_lpcm_flags(track->par->codec_id))
1353  tag = AV_RL32("lpcm");
1354  version = 2;
1355  } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||
1356  mov_pcm_be_gt16(track->par->codec_id) ||
1357  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1358  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1359  track->par->codec_id == AV_CODEC_ID_QDM2) {
1360  version = 1;
1361  }
1362  }
1363 
1364  avio_wb32(pb, 0); /* size */
1365  if (mov->encryption_scheme != MOV_ENC_NONE) {
1366  ffio_wfourcc(pb, "enca");
1367  } else {
1368  avio_wl32(pb, tag); // store it byteswapped
1369  }
1370  avio_wb32(pb, 0); /* Reserved */
1371  avio_wb16(pb, 0); /* Reserved */
1372  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
1373 
1374  /* SoundDescription */
1375  avio_wb16(pb, version); /* Version */
1376  avio_wb16(pb, 0); /* Revision level */
1377  avio_wb32(pb, 0); /* Reserved */
1378 
1379  if (version == 2) {
1380  avio_wb16(pb, 3);
1381  avio_wb16(pb, 16);
1382  avio_wb16(pb, 0xfffe);
1383  avio_wb16(pb, 0);
1384  avio_wb32(pb, 0x00010000);
1385  avio_wb32(pb, 72);
1386  avio_wb64(pb, av_double2int(track->par->sample_rate));
1387  avio_wb32(pb, track->par->ch_layout.nb_channels);
1388  avio_wb32(pb, 0x7F000000);
1389  avio_wb32(pb, av_get_bits_per_sample(track->par->codec_id));
1390  avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
1391  avio_wb32(pb, track->sample_size);
1392  avio_wb32(pb, get_samples_per_packet(track));
1393  } else {
1394  if (track->mode == MODE_MOV) {
1395  avio_wb16(pb, track->par->ch_layout.nb_channels);
1396  if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
1397  track->par->codec_id == AV_CODEC_ID_PCM_S8)
1398  avio_wb16(pb, 8); /* bits per sample */
1399  else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
1400  avio_wb16(pb, track->par->bits_per_coded_sample);
1401  else
1402  avio_wb16(pb, 16);
1403  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
1404  } else { /* reserved for mp4/3gp */
1405  avio_wb16(pb, track->tag == MKTAG('i', 'a', 'm', 'f') ?
1406  0 : track->par->ch_layout.nb_channels);
1407  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1408  track->par->codec_id == AV_CODEC_ID_ALAC) {
1409  avio_wb16(pb, track->par->bits_per_raw_sample);
1410  } else {
1411  avio_wb16(pb, 16);
1412  }
1413  avio_wb16(pb, 0);
1414  }
1415 
1416  avio_wb16(pb, 0); /* packet size (= 0) */
1417  if (track->tag == MKTAG('i','a','m','f'))
1418  avio_wb16(pb, 0); /* samplerate must be 0 for IAMF */
1419  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1420  avio_wb16(pb, 48000);
1421  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1422  avio_wb32(pb, track->par->sample_rate);
1423  else
1424  avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
1425  track->par->sample_rate : 0);
1426 
1427  if (track->par->codec_id != AV_CODEC_ID_TRUEHD)
1428  avio_wb16(pb, 0); /* Reserved */
1429  }
1430 
1431  if (version == 1) { /* SoundDescription V1 extended info */
1432  if (mov_pcm_le_gt16(track->par->codec_id) ||
1433  mov_pcm_be_gt16(track->par->codec_id))
1434  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
1435  else
1436  avio_wb32(pb, track->par->frame_size); /* Samples per packet */
1437  avio_wb32(pb, track->sample_size / track->par->ch_layout.nb_channels); /* Bytes per packet */
1438  avio_wb32(pb, track->sample_size); /* Bytes per frame */
1439  avio_wb32(pb, 2); /* Bytes per sample */
1440  }
1441 
1442  if (track->mode == MODE_MOV &&
1443  (track->par->codec_id == AV_CODEC_ID_AAC ||
1444  track->par->codec_id == AV_CODEC_ID_AC3 ||
1445  track->par->codec_id == AV_CODEC_ID_EAC3 ||
1446  track->par->codec_id == AV_CODEC_ID_AMR_NB ||
1447  track->par->codec_id == AV_CODEC_ID_ALAC ||
1448  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1449  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1450  track->par->codec_id == AV_CODEC_ID_QDM2 ||
1451  (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||
1452  (mov_pcm_be_gt16(track->par->codec_id) && version==1)))
1453  ret = mov_write_wave_tag(s, pb, track);
1454  else if (track->tag == MKTAG('m','p','4','a'))
1455  ret = mov_write_esds_tag(pb, track);
1456 #if CONFIG_IAMFENC
1457  else if (track->tag == MKTAG('i','a','m','f'))
1458  ret = mov_write_iacb_tag(mov->fc, pb, track);
1459 #endif
1460  else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)
1461  ret = mov_write_amr_tag(pb, track);
1462  else if (track->par->codec_id == AV_CODEC_ID_AC3)
1463  ret = mov_write_ac3_tag(s, pb, track);
1464  else if (track->par->codec_id == AV_CODEC_ID_EAC3)
1465  ret = mov_write_eac3_tag(s, pb, track);
1466  else if (track->par->codec_id == AV_CODEC_ID_ALAC)
1467  ret = mov_write_extradata_tag(pb, track);
1468  else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)
1469  ret = mov_write_wfex_tag(s, pb, track);
1470  else if (track->par->codec_id == AV_CODEC_ID_FLAC)
1471  ret = mov_write_dfla_tag(pb, track);
1472  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1473  ret = mov_write_dops_tag(s, pb, track);
1474  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1475  ret = mov_write_dmlp_tag(s, pb, track);
1476  else if (tag == MOV_MP4_IPCM_TAG || tag == MOV_MP4_FPCM_TAG) {
1477  if (track->par->ch_layout.nb_channels > 1)
1478  ret = mov_write_chnl_tag(s, pb, track);
1479  if (ret < 0)
1480  return ret;
1481  ret = mov_write_pcmc_tag(s, pb, track);
1482  } else if (track->vos_len > 0)
1483  ret = mov_write_glbl_tag(pb, track);
1484 
1485  if (ret < 0)
1486  return ret;
1487 
1488  if (track->mode == MODE_MP4 && track->par->codec_type == AVMEDIA_TYPE_AUDIO
1489  && ((ret = mov_write_SA3D_tag(s, pb, track)) < 0)) {
1490  return ret;
1491  }
1492 
1493  if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO
1494  && ((ret = mov_write_chan_tag(s, pb, track)) < 0)) {
1495  return ret;
1496  }
1497 
1498  if (mov->encryption_scheme != MOV_ENC_NONE
1499  && ((ret = ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid)) < 0)) {
1500  return ret;
1501  }
1502 
1503  if (mov->write_btrt &&
1504  ((ret = mov_write_btrt_tag(pb, track)) < 0))
1505  return ret;
1506 
1507  ret = update_size(pb, pos);
1508  return ret;
1509 }
1510 
1511 static int mov_write_d263_tag(AVIOContext *pb)
1512 {
1513  avio_wb32(pb, 0xf); /* size */
1514  ffio_wfourcc(pb, "d263");
1515  ffio_wfourcc(pb, "FFMP");
1516  avio_w8(pb, 0); /* decoder version */
1517  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1518  avio_w8(pb, 0xa); /* level */
1519  avio_w8(pb, 0); /* profile */
1520  return 0xf;
1521 }
1522 
1523 static int mov_write_av1c_tag(AVIOContext *pb, MOVTrack *track)
1524 {
1525  int64_t pos = avio_tell(pb);
1526 
1527  avio_wb32(pb, 0);
1528  ffio_wfourcc(pb, "av1C");
1529  ff_isom_write_av1c(pb, track->vos_data, track->vos_len, track->mode != MODE_AVIF);
1530  return update_size(pb, pos);
1531 }
1532 
1533 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1534 {
1535  int64_t pos = avio_tell(pb);
1536 
1537  avio_wb32(pb, 0);
1538  ffio_wfourcc(pb, "avcC");
1539  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1540  return update_size(pb, pos);
1541 }
1542 
1543 static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1544 {
1545  int64_t pos = avio_tell(pb);
1546 
1547  avio_wb32(pb, 0);
1548  ffio_wfourcc(pb, "vpcC");
1549  ff_isom_write_vpcc(s, pb, track->vos_data, track->vos_len, track->par);
1550  return update_size(pb, pos);
1551 }
1552 
1553 static int mov_write_hvcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1554 {
1555  int64_t pos = avio_tell(pb);
1556 
1557  avio_wb32(pb, 0);
1558  ffio_wfourcc(pb, "hvcC");
1559  if (track->tag == MKTAG('h','v','c','1'))
1560  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1, s);
1561  else
1562  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0, s);
1563  return update_size(pb, pos);
1564 }
1565 
1566 static int mov_write_lhvc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1567 {
1568  int64_t pos = avio_tell(pb);
1569  int ret;
1570 
1571  avio_wb32(pb, 0);
1572  ffio_wfourcc(pb, "lhvC");
1573  if (track->tag == MKTAG('h','v','c','1'))
1574  ret = ff_isom_write_lhvc(pb, track->vos_data, track->vos_len, 1, s);
1575  else
1576  ret = ff_isom_write_lhvc(pb, track->vos_data, track->vos_len, 0, s);
1577 
1578  if (ret < 0) {
1579  avio_seek(pb, pos, SEEK_SET);
1580  return ret;
1581  }
1582 
1583  return update_size(pb, pos);
1584 }
1585 
1586 static int mov_write_evcc_tag(AVIOContext *pb, MOVTrack *track)
1587 {
1588  int64_t pos = avio_tell(pb);
1589 
1590  avio_wb32(pb, 0);
1591  ffio_wfourcc(pb, "evcC");
1592 
1593  if (track->tag == MKTAG('e','v','c','1'))
1594  ff_isom_write_evcc(pb, track->vos_data, track->vos_len, 1);
1595  else
1596  ff_isom_write_evcc(pb, track->vos_data, track->vos_len, 0);
1597 
1598  return update_size(pb, pos);
1599 }
1600 
1601 static int mov_write_vvcc_tag(AVIOContext *pb, MOVTrack *track)
1602 {
1603  int64_t pos = avio_tell(pb);
1604 
1605  avio_wb32(pb, 0);
1606  ffio_wfourcc(pb, "vvcC");
1607 
1608  avio_w8 (pb, 0); /* version */
1609  avio_wb24(pb, 0); /* flags */
1610 
1611  if (track->tag == MKTAG('v','v','c','1'))
1612  ff_isom_write_vvcc(pb, track->vos_data, track->vos_len, 1);
1613  else
1614  ff_isom_write_vvcc(pb, track->vos_data, track->vos_len, 0);
1615  return update_size(pb, pos);
1616 }
1617 
1618 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1619 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1620 {
1621  int interlaced;
1622  int cid;
1623  int display_width = track->par->width;
1624 
1625  if (track->vos_data && track->vos_len > 0x29) {
1626  if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {
1627  /* looks like a DNxHD bit stream */
1628  interlaced = (track->vos_data[5] & 2);
1629  cid = AV_RB32(track->vos_data + 0x28);
1630  } else {
1631  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");
1632  return 0;
1633  }
1634  } else {
1635  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");
1636  return 0;
1637  }
1638 
1639  avio_wb32(pb, 24); /* size */
1640  ffio_wfourcc(pb, "ACLR");
1641  ffio_wfourcc(pb, "ACLR");
1642  ffio_wfourcc(pb, "0001");
1643  if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */
1644  track->par->color_range == AVCOL_RANGE_UNSPECIFIED) {
1645  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1646  } else { /* Full range (0-255) */
1647  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1648  }
1649  avio_wb32(pb, 0); /* unknown */
1650 
1651  if (track->tag == MKTAG('A','V','d','h')) {
1652  avio_wb32(pb, 32);
1653  ffio_wfourcc(pb, "ADHR");
1654  ffio_wfourcc(pb, "0001");
1655  avio_wb32(pb, cid);
1656  avio_wb32(pb, 0); /* unknown */
1657  avio_wb32(pb, 1); /* unknown */
1658  avio_wb32(pb, 0); /* unknown */
1659  avio_wb32(pb, 0); /* unknown */
1660  return 0;
1661  }
1662 
1663  avio_wb32(pb, 24); /* size */
1664  ffio_wfourcc(pb, "APRG");
1665  ffio_wfourcc(pb, "APRG");
1666  ffio_wfourcc(pb, "0001");
1667  avio_wb32(pb, 1); /* unknown */
1668  avio_wb32(pb, 0); /* unknown */
1669 
1670  avio_wb32(pb, 120); /* size */
1671  ffio_wfourcc(pb, "ARES");
1672  ffio_wfourcc(pb, "ARES");
1673  ffio_wfourcc(pb, "0001");
1674  avio_wb32(pb, cid); /* dnxhd cid, some id ? */
1675  if ( track->par->sample_aspect_ratio.num > 0
1676  && track->par->sample_aspect_ratio.den > 0)
1677  display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;
1678  avio_wb32(pb, display_width);
1679  /* values below are based on samples created with quicktime and avid codecs */
1680  if (interlaced) {
1681  avio_wb32(pb, track->par->height / 2);
1682  avio_wb32(pb, 2); /* unknown */
1683  avio_wb32(pb, 0); /* unknown */
1684  avio_wb32(pb, 4); /* unknown */
1685  } else {
1686  avio_wb32(pb, track->par->height);
1687  avio_wb32(pb, 1); /* unknown */
1688  avio_wb32(pb, 0); /* unknown */
1689  if (track->par->height == 1080)
1690  avio_wb32(pb, 5); /* unknown */
1691  else
1692  avio_wb32(pb, 6); /* unknown */
1693  }
1694  /* padding */
1695  ffio_fill(pb, 0, 10 * 8);
1696 
1697  return 0;
1698 }
1699 
1700 static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)
1701 {
1702  avio_wb32(pb, 12);
1703  ffio_wfourcc(pb, "DpxE");
1704  if (track->par->extradata_size >= 12 &&
1705  !memcmp(&track->par->extradata[4], "DpxE", 4)) {
1706  avio_wb32(pb, track->par->extradata[11]);
1707  } else {
1708  avio_wb32(pb, 1);
1709  }
1710  return 0;
1711 }
1712 
1713 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
1714 {
1715  int tag;
1716 
1717  if (track->par->width == 720) { /* SD */
1718  if (track->par->height == 480) { /* NTSC */
1719  if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1720  else tag = MKTAG('d','v','c',' ');
1721  }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1722  else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1723  else tag = MKTAG('d','v','p','p');
1724  } else if (track->par->height == 720) { /* HD 720 line */
1725  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1726  else tag = MKTAG('d','v','h','p');
1727  } else if (track->par->height == 1080) { /* HD 1080 line */
1728  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1729  else tag = MKTAG('d','v','h','6');
1730  } else {
1731  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1732  return 0;
1733  }
1734 
1735  return tag;
1736 }
1737 
1738 static int defined_frame_rate(AVFormatContext *s, AVStream *st)
1739 {
1740  AVRational rational_framerate = st->avg_frame_rate;
1741  int rate = 0;
1742  if (rational_framerate.den != 0)
1743  rate = av_q2d(rational_framerate);
1744  return rate;
1745 }
1746 
1747 static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
1748 {
1749  int tag = track->par->codec_tag;
1750  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1751  AVStream *st = track->st;
1752  int rate = defined_frame_rate(s, st);
1753 
1754  if (!tag)
1755  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1756 
1757  if (track->par->format == AV_PIX_FMT_YUV420P) {
1758  if (track->par->width == 1280 && track->par->height == 720) {
1759  if (!interlaced) {
1760  if (rate == 24) tag = MKTAG('x','d','v','4');
1761  else if (rate == 25) tag = MKTAG('x','d','v','5');
1762  else if (rate == 30) tag = MKTAG('x','d','v','1');
1763  else if (rate == 50) tag = MKTAG('x','d','v','a');
1764  else if (rate == 60) tag = MKTAG('x','d','v','9');
1765  }
1766  } else if (track->par->width == 1440 && track->par->height == 1080) {
1767  if (!interlaced) {
1768  if (rate == 24) tag = MKTAG('x','d','v','6');
1769  else if (rate == 25) tag = MKTAG('x','d','v','7');
1770  else if (rate == 30) tag = MKTAG('x','d','v','8');
1771  } else {
1772  if (rate == 25) tag = MKTAG('x','d','v','3');
1773  else if (rate == 30) tag = MKTAG('x','d','v','2');
1774  }
1775  } else if (track->par->width == 1920 && track->par->height == 1080) {
1776  if (!interlaced) {
1777  if (rate == 24) tag = MKTAG('x','d','v','d');
1778  else if (rate == 25) tag = MKTAG('x','d','v','e');
1779  else if (rate == 30) tag = MKTAG('x','d','v','f');
1780  } else {
1781  if (rate == 25) tag = MKTAG('x','d','v','c');
1782  else if (rate == 30) tag = MKTAG('x','d','v','b');
1783  }
1784  }
1785  } else if (track->par->format == AV_PIX_FMT_YUV422P) {
1786  if (track->par->width == 1280 && track->par->height == 720) {
1787  if (!interlaced) {
1788  if (rate == 24) tag = MKTAG('x','d','5','4');
1789  else if (rate == 25) tag = MKTAG('x','d','5','5');
1790  else if (rate == 30) tag = MKTAG('x','d','5','1');
1791  else if (rate == 50) tag = MKTAG('x','d','5','a');
1792  else if (rate == 60) tag = MKTAG('x','d','5','9');
1793  }
1794  } else if (track->par->width == 1920 && track->par->height == 1080) {
1795  if (!interlaced) {
1796  if (rate == 24) tag = MKTAG('x','d','5','d');
1797  else if (rate == 25) tag = MKTAG('x','d','5','e');
1798  else if (rate == 30) tag = MKTAG('x','d','5','f');
1799  } else {
1800  if (rate == 25) tag = MKTAG('x','d','5','c');
1801  else if (rate == 30) tag = MKTAG('x','d','5','b');
1802  }
1803  }
1804  }
1805 
1806  return tag;
1807 }
1808 
1809 static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
1810 {
1811  int tag = track->par->codec_tag;
1812  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1813  AVStream *st = track->st;
1814  int rate = defined_frame_rate(s, st);
1815 
1816  if (!tag)
1817  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1818 
1819  if (track->par->format == AV_PIX_FMT_YUV420P10) {
1820  if (track->par->width == 960 && track->par->height == 720) {
1821  if (!interlaced) {
1822  if (rate == 24) tag = MKTAG('a','i','5','p');
1823  else if (rate == 25) tag = MKTAG('a','i','5','q');
1824  else if (rate == 30) tag = MKTAG('a','i','5','p');
1825  else if (rate == 50) tag = MKTAG('a','i','5','q');
1826  else if (rate == 60) tag = MKTAG('a','i','5','p');
1827  }
1828  } else if (track->par->width == 1440 && track->par->height == 1080) {
1829  if (!interlaced) {
1830  if (rate == 24) tag = MKTAG('a','i','5','3');
1831  else if (rate == 25) tag = MKTAG('a','i','5','2');
1832  else if (rate == 30) tag = MKTAG('a','i','5','3');
1833  } else {
1834  if (rate == 50) tag = MKTAG('a','i','5','5');
1835  else if (rate == 60) tag = MKTAG('a','i','5','6');
1836  }
1837  }
1838  } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
1839  if (track->par->width == 1280 && track->par->height == 720) {
1840  if (!interlaced) {
1841  if (rate == 24) tag = MKTAG('a','i','1','p');
1842  else if (rate == 25) tag = MKTAG('a','i','1','q');
1843  else if (rate == 30) tag = MKTAG('a','i','1','p');
1844  else if (rate == 50) tag = MKTAG('a','i','1','q');
1845  else if (rate == 60) tag = MKTAG('a','i','1','p');
1846  }
1847  } else if (track->par->width == 1920 && track->par->height == 1080) {
1848  if (!interlaced) {
1849  if (rate == 24) tag = MKTAG('a','i','1','3');
1850  else if (rate == 25) tag = MKTAG('a','i','1','2');
1851  else if (rate == 30) tag = MKTAG('a','i','1','3');
1852  } else {
1853  if (rate == 25) tag = MKTAG('a','i','1','5');
1854  else if (rate == 50) tag = MKTAG('a','i','1','5');
1855  else if (rate == 60) tag = MKTAG('a','i','1','6');
1856  }
1857  } else if ( track->par->width == 4096 && track->par->height == 2160
1858  || track->par->width == 3840 && track->par->height == 2160
1859  || track->par->width == 2048 && track->par->height == 1080) {
1860  tag = MKTAG('a','i','v','x');
1861  }
1862  }
1863 
1864  return tag;
1865 }
1866 
1867 static int mov_get_evc_codec_tag(AVFormatContext *s, MOVTrack *track)
1868 {
1869  int tag = track->par->codec_tag;
1870 
1871  if (!tag)
1872  tag = MKTAG('e', 'v', 'c', '1');
1873 
1874  return tag;
1875 }
1876 
1877 static const struct {
1878  enum AVPixelFormat pix_fmt;
1879  uint32_t tag;
1880  unsigned bps;
1881 } mov_pix_fmt_tags[] = {
1882  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1883  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1884  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1885  { AV_PIX_FMT_VYU444, MKTAG('v','3','0','8'), 0 },
1886  { AV_PIX_FMT_UYVA, MKTAG('v','4','0','8'), 0 },
1887  { AV_PIX_FMT_V30XLE, MKTAG('v','4','1','0'), 0 },
1888  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1889  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1890  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1891  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1892  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1893  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1894  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1895  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1896  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1897  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1898  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1899  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1900 };
1901 
1902 static int mov_get_dnxhd_codec_tag(AVFormatContext *s, MOVTrack *track)
1903 {
1904  int tag = MKTAG('A','V','d','n');
1905  if (track->par->profile != AV_PROFILE_UNKNOWN &&
1906  track->par->profile != AV_PROFILE_DNXHD)
1907  tag = MKTAG('A','V','d','h');
1908  return tag;
1909 }
1910 
1911 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
1912 {
1913  int tag = track->par->codec_tag;
1914  int i;
1915  enum AVPixelFormat pix_fmt;
1916 
1917  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1918  if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
1919  tag = mov_pix_fmt_tags[i].tag;
1920  track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1921  if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
1922  break;
1923  }
1924  }
1925 
1926  pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_MOV,
1927  track->par->bits_per_coded_sample);
1928  if (tag == MKTAG('r','a','w',' ') &&
1929  track->par->format != pix_fmt &&
1930  track->par->format != AV_PIX_FMT_GRAY8 &&
1931  track->par->format != AV_PIX_FMT_NONE)
1932  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1933  av_get_pix_fmt_name(track->par->format));
1934  return tag;
1935 }
1936 
1937 static unsigned int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
1938 {
1939  unsigned int tag = track->par->codec_tag;
1940 
1941  // "rtp " is used to distinguish internally created RTP-hint tracks
1942  // (with rtp_ctx) from other tracks.
1943  if (tag == MKTAG('r','t','p',' '))
1944  tag = 0;
1945  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1946  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||
1947  track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||
1948  track->par->codec_id == AV_CODEC_ID_H263 ||
1949  track->par->codec_id == AV_CODEC_ID_H264 ||
1950  track->par->codec_id == AV_CODEC_ID_DNXHD ||
1951  track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1952  av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio
1953  if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)
1954  tag = mov_get_dv_codec_tag(s, track);
1955  else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)
1956  tag = mov_get_rawvideo_codec_tag(s, track);
1957  else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1958  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1959  else if (track->par->codec_id == AV_CODEC_ID_H264)
1960  tag = mov_get_h264_codec_tag(s, track);
1961  else if (track->par->codec_id == AV_CODEC_ID_EVC)
1962  tag = mov_get_evc_codec_tag(s, track);
1963  else if (track->par->codec_id == AV_CODEC_ID_DNXHD)
1964  tag = mov_get_dnxhd_codec_tag(s, track);
1965  else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
1966  tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->par->codec_id);
1967  if (!tag) { // if no mac fcc found, try with Microsoft tags
1968  tag = ff_codec_get_tag(ff_codec_bmp_tags, track->par->codec_id);
1969  if (tag)
1970  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1971  "the file may be unplayable!\n");
1972  }
1973  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
1974  tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->par->codec_id);
1975  if (!tag) { // if no mac fcc found, try with Microsoft tags
1976  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);
1977  if (ms_tag) {
1978  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1979  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1980  "the file may be unplayable!\n");
1981  }
1982  }
1983  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
1984  tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->par->codec_id);
1985  }
1986 
1987  return tag;
1988 }
1989 
1990 static const AVCodecTag codec_cover_image_tags[] = {
1991  { AV_CODEC_ID_MJPEG, 0xD },
1992  { AV_CODEC_ID_PNG, 0xE },
1993  { AV_CODEC_ID_BMP, 0x1B },
1994  { AV_CODEC_ID_NONE, 0 },
1995 };
1996 
1997 static unsigned int validate_codec_tag(const AVCodecTag *const *tags,
1998  unsigned int tag, int codec_id)
1999 {
2000  int i;
2001 
2002  /**
2003  * Check that tag + id is in the table
2004  */
2005  for (i = 0; tags && tags[i]; i++) {
2006  const AVCodecTag *codec_tags = tags[i];
2007  while (codec_tags->id != AV_CODEC_ID_NONE) {
2008  if (ff_toupper4(codec_tags->tag) == ff_toupper4(tag) &&
2009  codec_tags->id == codec_id)
2010  return codec_tags->tag;
2011  codec_tags++;
2012  }
2013  }
2014  return 0;
2015 }
2016 
2017 static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
2018 {
2019  if (is_cover_image(track->st))
2020  return ff_codec_get_tag(codec_cover_image_tags, track->par->codec_id);
2021 
2022  if (track->mode == MODE_IPOD)
2023  if (!av_match_ext(s->url, "m4a") &&
2024  !av_match_ext(s->url, "m4v") &&
2025  !av_match_ext(s->url, "m4b"))
2026  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
2027  "Quicktime/Ipod might not play the file\n");
2028 
2029  if (track->mode == MODE_MOV) {
2030  return mov_get_codec_tag(s, track);
2031  } else
2032  return validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
2033  track->par->codec_id);
2034 }
2035 
2036 /** Write uuid atom.
2037  * Needed to make file play in iPods running newest firmware
2038  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
2039  */
2040 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
2041 {
2042  avio_wb32(pb, 28);
2043  ffio_wfourcc(pb, "uuid");
2044  avio_wb32(pb, 0x6b6840f2);
2045  avio_wb32(pb, 0x5f244fc5);
2046  avio_wb32(pb, 0xba39a51b);
2047  avio_wb32(pb, 0xcf0323f3);
2048  avio_wb32(pb, 0x0);
2049  return 28;
2050 }
2051 
2052 static const uint16_t fiel_data[] = {
2053  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
2054 };
2055 
2056 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)
2057 {
2058  unsigned mov_field_order = 0;
2059  if (field_order < FF_ARRAY_ELEMS(fiel_data))
2060  mov_field_order = fiel_data[field_order];
2061  else
2062  return 0;
2063  avio_wb32(pb, 10);
2064  ffio_wfourcc(pb, "fiel");
2065  avio_wb16(pb, mov_field_order);
2066  return 10;
2067 }
2068 
2069 static int mov_write_subtitle_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2070 {
2071  MOVMuxContext *mov = s->priv_data;
2072  int ret = AVERROR_BUG;
2073  int64_t pos = avio_tell(pb);
2074  avio_wb32(pb, 0); /* size */
2075  avio_wl32(pb, track->tag); // store it byteswapped
2076  avio_wb32(pb, 0); /* Reserved */
2077  avio_wb16(pb, 0); /* Reserved */
2078  avio_wb16(pb, 1); /* Data-reference index */
2079 
2080  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
2081  mov_write_esds_tag(pb, track);
2082  else if (track->par->codec_id == AV_CODEC_ID_TTML) {
2083  switch (track->par->codec_tag) {
2084  case MOV_ISMV_TTML_TAG:
2085  // ISMV dfxp requires no extradata.
2086  break;
2087  case MOV_MP4_TTML_TAG:
2088  // As specified in 14496-30, XMLSubtitleSampleEntry
2089  // Namespace
2090  avio_put_str(pb, "http://www.w3.org/ns/ttml");
2091  // Empty schema_location
2092  avio_w8(pb, 0);
2093  // Empty auxiliary_mime_types
2094  avio_w8(pb, 0);
2095  break;
2096  default:
2097  av_log(NULL, AV_LOG_ERROR,
2098  "Unknown codec tag '%s' utilized for TTML stream with "
2099  "index %d (track id %d)!\n",
2100  av_fourcc2str(track->par->codec_tag), track->st->index,
2101  track->track_id);
2102  return AVERROR(EINVAL);
2103  }
2104  } else if (track->par->extradata_size)
2105  avio_write(pb, track->par->extradata, track->par->extradata_size);
2106 
2107  if (mov->write_btrt &&
2108  ((ret = mov_write_btrt_tag(pb, track)) < 0))
2109  return ret;
2110 
2111  return update_size(pb, pos);
2112 }
2113 
2114 static int mov_write_st3d_tag(AVFormatContext *s, AVIOContext *pb, AVStereo3D *stereo_3d)
2115 {
2116  int8_t stereo_mode;
2117 
2118  if (stereo_3d->flags != 0) {
2119  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);
2120  return 0;
2121  }
2122 
2123  switch (stereo_3d->type) {
2124  case AV_STEREO3D_2D:
2125  stereo_mode = 0;
2126  break;
2127  case AV_STEREO3D_TOPBOTTOM:
2128  stereo_mode = 1;
2129  break;
2130  case AV_STEREO3D_SIDEBYSIDE:
2131  stereo_mode = 2;
2132  break;
2133  default:
2134  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));
2135  return 0;
2136  }
2137  avio_wb32(pb, 13); /* size */
2138  ffio_wfourcc(pb, "st3d");
2139  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2140  avio_w8(pb, stereo_mode);
2141  return 13;
2142 }
2143 
2144 static int mov_write_sv3d_tag(AVFormatContext *s, AVIOContext *pb, AVSphericalMapping *spherical_mapping)
2145 {
2146  int64_t sv3d_pos, svhd_pos, proj_pos;
2147  const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;
2148 
2149  if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
2150  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
2151  spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {
2152  av_log(s, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);
2153  return 0;
2154  }
2155 
2156  sv3d_pos = avio_tell(pb);
2157  avio_wb32(pb, 0); /* size */
2158  ffio_wfourcc(pb, "sv3d");
2159 
2160  svhd_pos = avio_tell(pb);
2161  avio_wb32(pb, 0); /* size */
2162  ffio_wfourcc(pb, "svhd");
2163  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2164  avio_put_str(pb, metadata_source);
2165  update_size(pb, svhd_pos);
2166 
2167  proj_pos = avio_tell(pb);
2168  avio_wb32(pb, 0); /* size */
2169  ffio_wfourcc(pb, "proj");
2170 
2171  avio_wb32(pb, 24); /* size */
2172  ffio_wfourcc(pb, "prhd");
2173  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2174  avio_wb32(pb, spherical_mapping->yaw);
2175  avio_wb32(pb, spherical_mapping->pitch);
2176  avio_wb32(pb, spherical_mapping->roll);
2177 
2178  switch (spherical_mapping->projection) {
2179  case AV_SPHERICAL_EQUIRECTANGULAR:
2180  case AV_SPHERICAL_EQUIRECTANGULAR_TILE:
2181  avio_wb32(pb, 28); /* size */
2182  ffio_wfourcc(pb, "equi");
2183  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2184  avio_wb32(pb, spherical_mapping->bound_top);
2185  avio_wb32(pb, spherical_mapping->bound_bottom);
2186  avio_wb32(pb, spherical_mapping->bound_left);
2187  avio_wb32(pb, spherical_mapping->bound_right);
2188  break;
2189  case AV_SPHERICAL_CUBEMAP:
2190  avio_wb32(pb, 20); /* size */
2191  ffio_wfourcc(pb, "cbmp");
2192  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2193  avio_wb32(pb, 0); /* layout */
2194  avio_wb32(pb, spherical_mapping->padding); /* padding */
2195  break;
2196  }
2197  update_size(pb, proj_pos);
2198 
2199  return update_size(pb, sv3d_pos);
2200 }
2201 
2202 static inline int64_t rescale_rational(AVRational q, int b)
2203 {
2204  return av_rescale(q.num, b, q.den);
2205 }
2206 
2207 static void mov_write_hfov_tag(AVFormatContext *s, AVIOContext *pb,
2208  const AVStereo3D *stereo3d)
2209 {
2210  if (!stereo3d->horizontal_field_of_view.num)
2211  return;
2212 
2213  avio_wb32(pb, 12); /* size */
2214  ffio_wfourcc(pb, "hfov");
2215  avio_wb32(pb, rescale_rational(stereo3d->horizontal_field_of_view, 1000));
2216 }
2217 
2218 static void mov_write_vexu_proj_tag(AVFormatContext *s, AVIOContext *pb,
2219  const AVSphericalMapping *spherical_mapping)
2220 {
2221  avio_wb32(pb, 24); /* size */
2222  ffio_wfourcc(pb, "proj");
2223  avio_wb32(pb, 16); /* size */
2224  ffio_wfourcc(pb, "prji");
2225  avio_wb32(pb, 0); /* version + flags */
2226 
2227  switch (spherical_mapping->projection) {
2228  case AV_SPHERICAL_RECTILINEAR:
2229  ffio_wfourcc(pb, "rect");
2230  break;
2231  case AV_SPHERICAL_EQUIRECTANGULAR:
2232  ffio_wfourcc(pb, "equi");
2233  break;
2234  case AV_SPHERICAL_HALF_EQUIRECTANGULAR:
2235  ffio_wfourcc(pb, "hequ");
2236  break;
2237  case AV_SPHERICAL_FISHEYE:
2238  ffio_wfourcc(pb, "fish");
2239  break;
2240  default:
2241  av_assert0(0);
2242  }
2243 }
2244 
2245 static int mov_write_eyes_tag(AVFormatContext *s, AVIOContext *pb,
2246  const AVStereo3D *stereo3d)
2247 {
2248  int64_t pos = avio_tell(pb);
2249  int view = 0;
2250 
2251  avio_wb32(pb, 0); /* size */
2252  ffio_wfourcc(pb, "eyes");
2253 
2254  // stri is mandatory
2255  avio_wb32(pb, 13); /* size */
2256  ffio_wfourcc(pb, "stri");
2257  avio_wb32(pb, 0); /* version + flags */
2258  switch (stereo3d->view) {
2259  case AV_STEREO3D_VIEW_LEFT:
2260  view |= 1 << 0;
2261  break;
2262  case AV_STEREO3D_VIEW_RIGHT:
2263  view |= 1 << 1;
2264  break;
2265  case AV_STEREO3D_VIEW_PACKED:
2266  view |= (1 << 0) | (1 << 1);
2267  break;
2268  }
2269  view |= !!(stereo3d->flags & AV_STEREO3D_FLAG_INVERT) << 3;
2270  avio_w8(pb, view);
2271 
2272  // hero is optional
2273  if (stereo3d->primary_eye != AV_PRIMARY_EYE_NONE) {
2274  avio_wb32(pb, 13); /* size */
2275  ffio_wfourcc(pb, "hero");
2276  avio_wb32(pb, 0); /* version + flags */
2277  avio_w8(pb, stereo3d->primary_eye);
2278  }
2279 
2280  // it's not clear if cams is mandatory or optional
2281  if (stereo3d->baseline) {
2282  avio_wb32(pb, 24); /* size */
2283  ffio_wfourcc(pb, "cams");
2284  avio_wb32(pb, 16); /* size */
2285  ffio_wfourcc(pb, "blin");
2286  avio_wb32(pb, 0); /* version + flags */
2287  avio_wb32(pb, stereo3d->baseline);
2288  }
2289 
2290  // it's not clear if cmfy is mandatory or optional
2291  if (stereo3d->horizontal_disparity_adjustment.num) {
2292  avio_wb32(pb, 24); /* size */
2293  ffio_wfourcc(pb, "cmfy");
2294  avio_wb32(pb, 16); /* size */
2295  ffio_wfourcc(pb, "dadj");
2296  avio_wb32(pb, 0); /* version + flags */
2297  avio_wb32(pb, rescale_rational(stereo3d->horizontal_disparity_adjustment, 10000));
2298  }
2299 
2300  return update_size(pb, pos);
2301 }
2302 
2303 static int mov_write_vexu_tag(AVFormatContext *s, AVIOContext *pb,
2304  const AVStereo3D *stereo3d,
2305  const AVSphericalMapping *spherical_mapping)
2306 {
2307  int64_t pos;
2308 
2309  if (spherical_mapping &&
2310  spherical_mapping->projection != AV_SPHERICAL_RECTILINEAR &&
2311  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
2312  spherical_mapping->projection != AV_SPHERICAL_HALF_EQUIRECTANGULAR &&
2313  spherical_mapping->projection != AV_SPHERICAL_FISHEYE) {
2314  av_log(s, AV_LOG_WARNING, "Unsupported projection %d. proj not written.\n",
2315  spherical_mapping->projection);
2316  spherical_mapping = NULL;
2317  }
2318 
2319  if (stereo3d && (stereo3d->type == AV_STEREO3D_2D ||
2320  (!(stereo3d->flags & AV_STEREO3D_FLAG_INVERT) &&
2321  stereo3d->view == AV_STEREO3D_VIEW_UNSPEC &&
2322  stereo3d->primary_eye == AV_PRIMARY_EYE_NONE &&
2323  !stereo3d->baseline &&
2324  !stereo3d->horizontal_disparity_adjustment.num))) {
2325  av_log(s, AV_LOG_WARNING, "Unsupported stereo 3d metadata. eyes not written.\n");
2326  stereo3d = NULL;
2327  }
2328 
2329  if (!spherical_mapping && !stereo3d)
2330  return 0;
2331 
2332  pos = avio_tell(pb);
2333  avio_wb32(pb, 0); /* size */
2334  ffio_wfourcc(pb, "vexu");
2335 
2336  if (spherical_mapping)
2337  mov_write_vexu_proj_tag(s, pb, spherical_mapping);
2338 
2339  if (stereo3d)
2340  mov_write_eyes_tag(s, pb, stereo3d);
2341 
2342  return update_size(pb, pos);
2343 }
2344 
2345 static int mov_write_dvcc_dvvc_tag(AVFormatContext *s, AVIOContext *pb, AVDOVIDecoderConfigurationRecord *dovi)
2346 {
2347  uint8_t buf[ISOM_DVCC_DVVC_SIZE];
2348 
2349  avio_wb32(pb, 32); /* size = 8 + 24 */
2350  if (dovi->dv_profile > 10)
2351  ffio_wfourcc(pb, "dvwC");
2352  else if (dovi->dv_profile > 7)
2353  ffio_wfourcc(pb, "dvvC");
2354  else
2355  ffio_wfourcc(pb, "dvcC");
2356 
2357  ff_isom_put_dvcc_dvvc(s, buf, dovi);
2358  avio_write(pb, buf, sizeof(buf));
2359 
2360  return 32; /* 8 + 24 */
2361 }
2362 
2363 static int mov_write_clap_tag(AVIOContext *pb, MOVTrack *track,
2364  uint32_t top, uint32_t bottom,
2365  uint32_t left, uint32_t right)
2366 {
2367  uint32_t cropped_width = track->par->width - left - right;
2368  uint32_t cropped_height = track->height - top - bottom;
2369  AVRational horizOff =
2370  av_sub_q((AVRational) { track->par->width - cropped_width, 2 },
2371  (AVRational) { left, 1 });
2372  AVRational vertOff =
2373  av_sub_q((AVRational) { track->height - cropped_height, 2 },
2374  (AVRational) { top, 1 });
2375 
2376  avio_wb32(pb, 40);
2377  ffio_wfourcc(pb, "clap");
2378  avio_wb32(pb, cropped_width); /* apertureWidthN */
2379  avio_wb32(pb, 1); /* apertureWidthD */
2380  avio_wb32(pb, cropped_height); /* apertureHeightN */
2381  avio_wb32(pb, 1); /* apertureHeightD */
2382 
2383  avio_wb32(pb, -horizOff.num);
2384  avio_wb32(pb, horizOff.den);
2385  avio_wb32(pb, -vertOff.num);
2386  avio_wb32(pb, vertOff.den);
2387 
2388  return 40;
2389 }
2390 
2391 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
2392 {
2393  AVRational sar;
2394  av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,
2395  track->par->sample_aspect_ratio.den, INT_MAX);
2396 
2397  avio_wb32(pb, 16);
2398  ffio_wfourcc(pb, "pasp");
2399  avio_wb32(pb, sar.num);
2400  avio_wb32(pb, sar.den);
2401  return 16;
2402 }
2403 
2404 static int mov_write_gama_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track, double gamma)
2405 {
2406  uint32_t gama = 0;
2407  if (gamma <= 0.0)
2408  gamma = av_csp_approximate_trc_gamma(track->par->color_trc);
2409  av_log(s, AV_LOG_DEBUG, "gamma value %g\n", gamma);
2410 
2411  if (gamma > 1e-6) {
2412  gama = (uint32_t)lrint((double)(1<<16) * gamma);
2413  av_log(s, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);
2414 
2415  av_assert0(track->mode == MODE_MOV);
2416  avio_wb32(pb, 12);
2417  ffio_wfourcc(pb, "gama");
2418  avio_wb32(pb, gama);
2419  return 12;
2420  } else {
2421  av_log(s, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
2422  }
2423  return 0;
2424 }
2425 
2426 static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track, int prefer_icc)
2427 {
2428  int64_t pos = avio_tell(pb);
2429 
2430  // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
2431  // Ref (MP4): ISO/IEC 14496-12:2012
2432 
2433  if (prefer_icc) {
2434  const AVPacketSideData *sd = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2435  track->st->codecpar->nb_coded_side_data,
2436  AV_PKT_DATA_ICC_PROFILE);
2437 
2438  if (sd) {
2439  avio_wb32(pb, 12 + sd->size);
2440  ffio_wfourcc(pb, "colr");
2441  ffio_wfourcc(pb, "prof");
2442  avio_write(pb, sd->data, sd->size);
2443  return 12 + sd->size;
2444  }
2445  else {
2446  av_log(NULL, AV_LOG_INFO, "no ICC profile found, will write nclx/nclc colour info instead\n");
2447  }
2448  }
2449 
2450  /* We should only ever be called for MOV, MP4 and AVIF. */
2451  av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4 ||
2452  track->mode == MODE_AVIF);
2453 
2454  avio_wb32(pb, 0); /* size */
2455  ffio_wfourcc(pb, "colr");
2456  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF)
2457  ffio_wfourcc(pb, "nclx");
2458  else
2459  ffio_wfourcc(pb, "nclc");
2460  // Do not try to guess the color info if it is AVCOL_PRI_UNSPECIFIED.
2461  // e.g., Dolby Vision for Apple devices should be set to AVCOL_PRI_UNSPECIFIED. See
2462  // https://developer.apple.com/av-foundation/High-Dynamic-Range-Metadata-for-Apple-Devices.pdf
2463  avio_wb16(pb, track->par->color_primaries);
2464  avio_wb16(pb, track->par->color_trc);
2465  avio_wb16(pb, track->par->color_space);
2466  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2467  int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
2468  avio_w8(pb, full_range << 7);
2469  }
2470 
2471  return update_size(pb, pos);
2472 }
2473 
2474 static int mov_write_clli_tag(AVIOContext *pb, MOVTrack *track)
2475 {
2476  const AVPacketSideData *side_data;
2477  const AVContentLightMetadata *content_light_metadata;
2478 
2479  side_data = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2480  track->st->codecpar->nb_coded_side_data,
2481  AV_PKT_DATA_CONTENT_LIGHT_LEVEL);
2482  if (!side_data) {
2483  return 0;
2484  }
2485  content_light_metadata = (const AVContentLightMetadata*)side_data->data;
2486 
2487  avio_wb32(pb, 12); // size
2488  ffio_wfourcc(pb, "clli");
2489  avio_wb16(pb, content_light_metadata->MaxCLL);
2490  avio_wb16(pb, content_light_metadata->MaxFALL);
2491  return 12;
2492 }
2493 
2494 static int mov_write_mdcv_tag(AVIOContext *pb, MOVTrack *track)
2495 {
2496  const int chroma_den = 50000;
2497  const int luma_den = 10000;
2498  const AVPacketSideData *side_data;
2499  const AVMasteringDisplayMetadata *metadata = NULL;
2500 
2501  side_data = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2502  track->st->codecpar->nb_coded_side_data,
2503  AV_PKT_DATA_MASTERING_DISPLAY_METADATA);
2504  if (side_data)
2505  metadata = (const AVMasteringDisplayMetadata*)side_data->data;
2506  if (!metadata || !metadata->has_primaries || !metadata->has_luminance) {
2507  return 0;
2508  }
2509 
2510  avio_wb32(pb, 32); // size
2511  ffio_wfourcc(pb, "mdcv");
2512  avio_wb16(pb, rescale_rational(metadata->display_primaries[1][0], chroma_den));
2513  avio_wb16(pb, rescale_rational(metadata->display_primaries[1][1], chroma_den));
2514  avio_wb16(pb, rescale_rational(metadata->display_primaries[2][0], chroma_den));
2515  avio_wb16(pb, rescale_rational(metadata->display_primaries[2][1], chroma_den));
2516  avio_wb16(pb, rescale_rational(metadata->display_primaries[0][0], chroma_den));
2517  avio_wb16(pb, rescale_rational(metadata->display_primaries[0][1], chroma_den));
2518  avio_wb16(pb, rescale_rational(metadata->white_point[0], chroma_den));
2519  avio_wb16(pb, rescale_rational(metadata->white_point[1], chroma_den));
2520  avio_wb32(pb, rescale_rational(metadata->max_luminance, luma_den));
2521  avio_wb32(pb, rescale_rational(metadata->min_luminance, luma_den));
2522  return 32;
2523 }
2524 
2525 static int mov_write_amve_tag(AVIOContext *pb, MOVTrack *track)
2526 {
2527  const int illuminance_den = 10000;
2528  const int ambient_den = 50000;
2529  const AVPacketSideData *side_data;
2530  const AVAmbientViewingEnvironment *ambient;
2531 
2532 
2533  side_data = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2534  track->st->codecpar->nb_coded_side_data,
2535  AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT);
2536 
2537  if (!side_data)
2538  return 0;
2539 
2540  ambient = (const AVAmbientViewingEnvironment*)side_data->data;
2541  if (!ambient || !ambient->ambient_illuminance.num)
2542  return 0;
2543 
2544  avio_wb32(pb, 16); // size
2545  ffio_wfourcc(pb, "amve");
2546  avio_wb32(pb, rescale_rational(ambient->ambient_illuminance, illuminance_den));
2547  avio_wb16(pb, rescale_rational(ambient->ambient_light_x, ambient_den));
2548  avio_wb16(pb, rescale_rational(ambient->ambient_light_y, ambient_den));
2549  return 16;
2550 }
2551 
2552 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
2553 {
2554  AVDictionaryEntry *encoder;
2555  int xdcam_res = (track->par->width == 1280 && track->par->height == 720)
2556  || (track->par->width == 1440 && track->par->height == 1080)
2557  || (track->par->width == 1920 && track->par->height == 1080);
2558 
2559  if ((track->mode == MODE_AVIF ||
2560  track->mode == MODE_MOV ||
2561  track->mode == MODE_MP4) &&
2562  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
2563  av_strlcpy(compressor_name, encoder->value, 32);
2564  } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
2565  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
2566  AVStream *st = track->st;
2567  int rate = defined_frame_rate(NULL, st);
2568  av_strlcatf(compressor_name, len, "XDCAM");
2569  if (track->par->format == AV_PIX_FMT_YUV422P) {
2570  av_strlcatf(compressor_name, len, " HD422");
2571  } else if(track->par->width == 1440) {
2572  av_strlcatf(compressor_name, len, " HD");
2573  } else
2574  av_strlcatf(compressor_name, len, " EX");
2575 
2576  av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');
2577 
2578  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
2579  }
2580 }
2581 
2582 static int mov_write_ccst_tag(AVIOContext *pb)
2583 {
2584  int64_t pos = avio_tell(pb);
2585  // Write sane defaults:
2586  // all_ref_pics_intra = 0 : all samples can use any type of reference.
2587  // intra_pred_used = 1 : intra prediction may or may not be used.
2588  // max_ref_per_pic = 15 : reserved value to indicate that any number of
2589  // reference images can be used.
2590  uint8_t ccstValue = (0 << 7) | /* all_ref_pics_intra */
2591  (1 << 6) | /* intra_pred_used */
2592  (15 << 2); /* max_ref_per_pic */
2593  avio_wb32(pb, 0); /* size */
2594  ffio_wfourcc(pb, "ccst");
2595  avio_wb32(pb, 0); /* Version & flags */
2596  avio_w8(pb, ccstValue);
2597  avio_wb24(pb, 0); /* reserved */
2598  return update_size(pb, pos);
2599 }
2600 
2601 static int mov_write_aux_tag(AVIOContext *pb, const char *aux_type)
2602 {
2603  int64_t pos = avio_tell(pb);
2604  avio_wb32(pb, 0); /* size */
2605  ffio_wfourcc(pb, aux_type);
2606  avio_wb32(pb, 0); /* Version & flags */
2607  avio_write(pb, "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha\0", 44);
2608  return update_size(pb, pos);
2609 }
2610 
2611 static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2612 {
2613  int ret = AVERROR_BUG;
2614  int64_t pos = avio_tell(pb);
2615  const AVPacketSideData *sd;
2616  char compressor_name[32] = { 0 };
2617  int avid = 0;
2618 
2619  int uncompressed_ycbcr = ((track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVY422)
2620  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_YUYV422)
2621  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_VYU444)
2622  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVA)
2623  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_V30XLE)
2624 #if FF_API_V408_CODECID
2625  || track->par->codec_id == AV_CODEC_ID_V308
2626  || track->par->codec_id == AV_CODEC_ID_V408
2627  || track->par->codec_id == AV_CODEC_ID_V410
2628 #endif
2629  || track->par->codec_id == AV_CODEC_ID_V210);
2630 
2631  avio_wb32(pb, 0); /* size */
2632  if (mov->encryption_scheme != MOV_ENC_NONE) {
2633  ffio_wfourcc(pb, "encv");
2634  } else {
2635  avio_wl32(pb, track->tag); // store it byteswapped
2636  }
2637  avio_wb32(pb, 0); /* Reserved */
2638  avio_wb16(pb, 0); /* Reserved */
2639  avio_wb16(pb, 1); /* Data-reference index */
2640 
2641  if (uncompressed_ycbcr) {
2642  avio_wb16(pb, 2); /* Codec stream version */
2643  } else {
2644  avio_wb16(pb, 0); /* Codec stream version */
2645  }
2646  avio_wb16(pb, 0); /* Codec stream revision (=0) */
2647  if (track->mode == MODE_MOV) {
2648  ffio_wfourcc(pb, "FFMP"); /* Vendor */
2649  if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO || uncompressed_ycbcr) {
2650  avio_wb32(pb, 0); /* Temporal Quality */
2651  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
2652  } else {
2653  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
2654  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
2655  }
2656  } else {
2657  ffio_fill(pb, 0, 3 * 4); /* Reserved */
2658  }
2659  avio_wb16(pb, track->par->width); /* Video width */
2660  avio_wb16(pb, track->height); /* Video height */
2661  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
2662  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
2663  avio_wb32(pb, 0); /* Data size (= 0) */
2664  avio_wb16(pb, 1); /* Frame count (= 1) */
2665 
2666  find_compressor(compressor_name, 32, track);
2667  avio_w8(pb, strlen(compressor_name));
2668  avio_write(pb, compressor_name, 31);
2669 
2670  if (track->mode == MODE_MOV &&
2671  (track->par->codec_id == AV_CODEC_ID_V410 || track->par->codec_id == AV_CODEC_ID_V210))
2672  avio_wb16(pb, 0x18);
2673  else if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
2674  avio_wb16(pb, track->par->bits_per_coded_sample |
2675  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
2676  else
2677  avio_wb16(pb, 0x18); /* Reserved */
2678 
2679  if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
2680  int pal_size, i;
2681  avio_wb16(pb, 0); /* Color table ID */
2682  avio_wb32(pb, 0); /* Color table seed */
2683  avio_wb16(pb, 0x8000); /* Color table flags */
2684  if (track->par->bits_per_coded_sample < 0 || track->par->bits_per_coded_sample > 8)
2685  return AVERROR(EINVAL);
2686  pal_size = 1 << track->par->bits_per_coded_sample;
2687  avio_wb16(pb, pal_size - 1); /* Color table size (zero-relative) */
2688  for (i = 0; i < pal_size; i++) {
2689  uint32_t rgb = track->palette[i];
2690  uint16_t r = (rgb >> 16) & 0xff;
2691  uint16_t g = (rgb >> 8) & 0xff;
2692  uint16_t b = rgb & 0xff;
2693  avio_wb16(pb, 0);
2694  avio_wb16(pb, (r << 8) | r);
2695  avio_wb16(pb, (g << 8) | g);
2696  avio_wb16(pb, (b << 8) | b);
2697  }
2698  } else
2699  avio_wb16(pb, 0xffff); /* Reserved */
2700 
2701  if (track->tag == MKTAG('m','p','4','v'))
2702  mov_write_esds_tag(pb, track);
2703  else if (track->par->codec_id == AV_CODEC_ID_H263)
2704  mov_write_d263_tag(pb);
2705  else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
2706  track->par->codec_id == AV_CODEC_ID_SVQ3) {
2707  mov_write_extradata_tag(pb, track);
2708  avio_wb32(pb, 0);
2709  } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
2710  mov_write_avid_tag(pb, track);
2711  avid = 1;
2712  } else if (track->par->codec_id == AV_CODEC_ID_HEVC) {
2713  mov_write_hvcc_tag(mov->fc, pb, track);
2714  if (track->st->disposition & AV_DISPOSITION_MULTILAYER) {
2715  ret = mov_write_lhvc_tag(mov->fc, pb, track);
2716  if (ret < 0)
2717  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'lhvC' atom for multilayer stream.\n");
2718  }
2719  } else if (track->par->codec_id == AV_CODEC_ID_VVC)
2720  mov_write_vvcc_tag(pb, track);
2721  else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
2722  mov_write_avcc_tag(pb, track);
2723  if (track->mode == MODE_IPOD)
2724  mov_write_uuid_tag_ipod(pb);
2725  }
2726  else if (track->par->codec_id ==AV_CODEC_ID_EVC) {
2727  mov_write_evcc_tag(pb, track);
2728  } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
2729  mov_write_vpcc_tag(mov->fc, pb, track);
2730  } else if (track->par->codec_id == AV_CODEC_ID_AV1) {
2731  mov_write_av1c_tag(pb, track);
2732  } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
2733  mov_write_dvc1_tag(pb, track);
2734  else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
2735  track->par->codec_id == AV_CODEC_ID_VP6A) {
2736  /* Don't write any potential extradata here - the cropping
2737  * is signalled via the normal width/height fields. */
2738  } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
2739  if (track->par->codec_tag == MKTAG('R','1','0','k'))
2740  mov_write_dpxe_tag(pb, track);
2741  } else if (track->vos_len > 0)
2742  mov_write_glbl_tag(pb, track);
2743 
2744  if (track->par->codec_id != AV_CODEC_ID_H264 &&
2745  track->par->codec_id != AV_CODEC_ID_MPEG4 &&
2746  track->par->codec_id != AV_CODEC_ID_DNXHD) {
2747  int field_order = track->par->field_order;
2748 
2749  if (field_order != AV_FIELD_UNKNOWN)
2750  mov_write_fiel_tag(pb, track, field_order);
2751  }
2752 
2753  if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
2754  if (track->mode == MODE_MOV)
2755  mov_write_gama_tag(s, pb, track, mov->gamma);
2756  else
2757  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
2758  }
2759  if (track->mode == MODE_MOV || track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2760  int has_color_info = track->par->color_primaries != AVCOL_PRI_UNSPECIFIED &&
2761  track->par->color_trc != AVCOL_TRC_UNSPECIFIED &&
2762  track->par->color_space != AVCOL_SPC_UNSPECIFIED;
2763  if (has_color_info || mov->flags & FF_MOV_FLAG_WRITE_COLR ||
2764  av_packet_side_data_get(track->st->codecpar->coded_side_data, track->st->codecpar->nb_coded_side_data,
2765  AV_PKT_DATA_ICC_PROFILE)) {
2766  int prefer_icc = mov->flags & FF_MOV_FLAG_PREFER_ICC || !has_color_info;
2767  mov_write_colr_tag(pb, track, prefer_icc);
2768  }
2769  } else if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
2770  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4 or AVIF.\n");
2771  }
2772 
2773  if (track->mode == MODE_MOV || track->mode == MODE_MP4) {
2774  mov_write_clli_tag(pb, track);
2775  mov_write_mdcv_tag(pb, track);
2776  mov_write_amve_tag(pb, track);
2777  }
2778 
2779  if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2780  const AVPacketSideData *stereo_3d = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2781  track->st->codecpar->nb_coded_side_data,
2782  AV_PKT_DATA_STEREO3D);
2783  const AVPacketSideData *spherical_mapping = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2784  track->st->codecpar->nb_coded_side_data,
2785  AV_PKT_DATA_SPHERICAL);
2786  if (stereo_3d)
2787  mov_write_st3d_tag(s, pb, (AVStereo3D*)stereo_3d->data);
2788  if (spherical_mapping)
2789  mov_write_sv3d_tag(mov->fc, pb, (AVSphericalMapping*)spherical_mapping->data);
2790  }
2791 
2792  if (track->mode == MODE_MOV || (track->mode == MODE_MP4 &&
2793  mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
2794  const AVStereo3D *stereo3d = NULL;
2795  const AVSphericalMapping *spherical_mapping = NULL;
2796 
2797  sd = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2798  track->st->codecpar->nb_coded_side_data,
2799  AV_PKT_DATA_STEREO3D);
2800  if (sd)
2801  stereo3d = (AVStereo3D *)sd->data;
2802 
2803  sd = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2804  track->st->codecpar->nb_coded_side_data,
2805  AV_PKT_DATA_SPHERICAL);
2806  if (sd)
2807  spherical_mapping = (AVSphericalMapping *)sd->data;
2808 
2809  if (stereo3d || spherical_mapping)
2810  mov_write_vexu_tag(s, pb, stereo3d, spherical_mapping);
2811  if (stereo3d)
2812  mov_write_hfov_tag(s, pb, stereo3d);
2813  }
2814 
2815  if (track->mode == MODE_MP4) {
2816  const AVPacketSideData *dovi = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2817  track->st->codecpar->nb_coded_side_data,
2818  AV_PKT_DATA_DOVI_CONF);
2819  if (dovi && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2820  mov_write_dvcc_dvvc_tag(s, pb, (AVDOVIDecoderConfigurationRecord *)dovi->data);
2821  } else if (dovi) {
2822  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'dvcC'/'dvvC' box. Requires -strict unofficial.\n");
2823  }
2824  }
2825 
2826  if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
2827  mov_write_pasp_tag(pb, track);
2828  }
2829 
2830  sd = av_packet_side_data_get(track->st->codecpar->coded_side_data,
2831  track->st->codecpar->nb_coded_side_data,
2832  AV_PKT_DATA_FRAME_CROPPING);
2833  if (sd && sd->size >= sizeof(uint32_t) * 4) {
2834  uint64_t top = AV_RL32(sd->data + 0);
2835  uint64_t bottom = AV_RL32(sd->data + 4);
2836  uint64_t left = AV_RL32(sd->data + 8);
2837  uint64_t right = AV_RL32(sd->data + 12);
2838 
2839  if ((left + right) >= track->par->width ||
2840  (top + bottom) >= track->height) {
2841  av_log(s, AV_LOG_ERROR, "Invalid cropping dimensions in stream side data\n");
2842  return AVERROR(EINVAL);
2843  }
2844  if (top || bottom || left || right)
2845  mov_write_clap_tag(pb, track, top, bottom, left, right);
2846  } else if (uncompressed_ycbcr)
2847  mov_write_clap_tag(pb, track, 0, 0, 0, 0);
2848 
2849  if (mov->encryption_scheme != MOV_ENC_NONE) {
2850  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
2851  }
2852 
2853  if (mov->write_btrt &&
2854  ((ret = mov_write_btrt_tag(pb, track)) < 0))
2855  return ret;
2856 
2857  /* extra padding for avid stsd */
2858  /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
2859  if (avid)
2860  avio_wb32(pb, 0);
2861 
2862  if (track->mode == MODE_AVIF) {
2863  mov_write_ccst_tag(pb);
2864  if (mov->nb_streams > 0 && track == &mov->tracks[1])
2865  mov_write_aux_tag(pb, "auxi");
2866  }
2867 
2868  return update_size(pb, pos);
2869 }
2870 
2871 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
2872 {
2873  int64_t pos = avio_tell(pb);
2874  avio_wb32(pb, 0); /* size */
2875  ffio_wfourcc(pb, "rtp ");
2876  avio_wb32(pb, 0); /* Reserved */
2877  avio_wb16(pb, 0); /* Reserved */
2878  avio_wb16(pb, 1); /* Data-reference index */
2879 
2880  avio_wb16(pb, 1); /* Hint track version */
2881  avio_wb16(pb, 1); /* Highest compatible version */
2882  avio_wb32(pb, track->max_packet_size); /* Max packet size */
2883 
2884  avio_wb32(pb, 12); /* size */
2885  ffio_wfourcc(pb, "tims");
2886  avio_wb32(pb, track->timescale);
2887 
2888  return update_size(pb, pos);
2889 }
2890 
2891 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
2892 {
2893  uint64_t str_size =strlen(reel_name);
2894  int64_t pos = avio_tell(pb);
2895 
2896  if (str_size >= UINT16_MAX){
2897  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
2898  avio_wb16(pb, 0);
2899  return AVERROR(EINVAL);
2900  }
2901 
2902  avio_wb32(pb, 0); /* size */
2903  ffio_wfourcc(pb, "name"); /* Data format */
2904  avio_wb16(pb, str_size); /* string size */
2905  avio_wb16(pb, track->language); /* langcode */
2906  avio_write(pb, reel_name, str_size); /* reel name */
2907  return update_size(pb,pos);
2908 }
2909 
2910 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
2911 {
2912  int64_t pos = avio_tell(pb);
2913 #if 1
2914  int frame_duration;
2915  int nb_frames;
2916  AVDictionaryEntry *t = NULL;
2917 
2918  if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {
2919  av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");
2920  return AVERROR(EINVAL);
2921  } else {
2922  frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);
2923  nb_frames = ROUNDED_DIV(track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);
2924  }
2925 
2926  if (nb_frames > 255) {
2927  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
2928  return AVERROR(EINVAL);
2929  }
2930 
2931  avio_wb32(pb, 0); /* size */
2932  ffio_wfourcc(pb, "tmcd"); /* Data format */
2933  avio_wb32(pb, 0); /* Reserved */
2934  avio_wb32(pb, 1); /* Data reference index */
2935  avio_wb32(pb, 0); /* Flags */
2936  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
2937  avio_wb32(pb, track->timescale); /* Timescale */
2938  avio_wb32(pb, frame_duration); /* Frame duration */
2939  avio_w8(pb, nb_frames); /* Number of frames */
2940  avio_w8(pb, 0); /* Reserved */
2941 
2942  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
2943  if (t && utf8len(t->value) && track->mode != MODE_MP4)
2944  mov_write_source_reference_tag(pb, track, t->value);
2945  else
2946  avio_wb16(pb, 0); /* zero size */
2947 #else
2948 
2949  avio_wb32(pb, 0); /* size */
2950  ffio_wfourcc(pb, "tmcd"); /* Data format */
2951  avio_wb32(pb, 0); /* Reserved */
2952  avio_wb32(pb, 1); /* Data reference index */
2953  if (track->par->extradata_size)
2954  avio_write(pb, track->par->extradata, track->par->extradata_size);
2955 #endif
2956  return update_size(pb, pos);
2957 }
2958 
2959 static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)
2960 {
2961  int64_t pos = avio_tell(pb);
2962  avio_wb32(pb, 0); /* size */
2963  ffio_wfourcc(pb, "gpmd");
2964  avio_wb32(pb, 0); /* Reserved */
2965  avio_wb16(pb, 0); /* Reserved */
2966  avio_wb16(pb, 1); /* Data-reference index */
2967  avio_wb32(pb, 0); /* Reserved */
2968  return update_size(pb, pos);
2969 }
2970 
2971 static int mov_write_stsd_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2972 {
2973  int64_t pos = avio_tell(pb);
2974  int ret = 0;
2975  avio_wb32(pb, 0); /* size */
2976  ffio_wfourcc(pb, "stsd");
2977  avio_wb32(pb, 0); /* version & flags */
2978  avio_wb32(pb, 1); /* entry count */
2979  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2980  ret = mov_write_video_tag(s, pb, mov, track);
2981  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2982  ret = mov_write_audio_tag(s, pb, mov, track);
2983  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
2984  ret = mov_write_subtitle_tag(s, pb, track);
2985  else if (track->par->codec_tag == MKTAG('r','t','p',' '))
2986  ret = mov_write_rtp_tag(pb, track);
2987  else if (track->par->codec_tag == MKTAG('t','m','c','d'))
2988  ret = mov_write_tmcd_tag(pb, track);
2989  else if (track->par->codec_tag == MKTAG('g','p','m','d'))
2990  ret = mov_write_gpmd_tag(pb, track);
2991 
2992  if (ret < 0)
2993  return ret;
2994 
2995  return update_size(pb, pos);
2996 }
2997 
2998 static int mov_write_ctts_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2999 {
3000  MOVMuxContext *mov = s->priv_data;
3001  MOVCtts *ctts_entries;
3002  uint32_t entries = 0;
3003  uint32_t atom_size;
3004  int i;
3005 
3006  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
3007  if (!ctts_entries)
3008  return AVERROR(ENOMEM);
3009  ctts_entries[0].count = 1;
3010  ctts_entries[0].offset = track->cluster[0].cts;
3011  for (i = 1; i < track->entry; i++) {
3012  if (track->cluster[i].cts == ctts_entries[entries].offset) {
3013  ctts_entries[entries].count++; /* compress */
3014  } else {
3015  entries++;
3016  ctts_entries[entries].offset = track->cluster[i].cts;
3017  ctts_entries[entries].count = 1;
3018  }
3019  }
3020  entries++; /* last one */
3021  atom_size = 16 + (entries * 8);
3022  avio_wb32(pb, atom_size); /* size */
3023  ffio_wfourcc(pb, "ctts");
3024  if (mov->flags & FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS)
3025  avio_w8(pb, 1); /* version */
3026  else
3027  avio_w8(pb, 0); /* version */
3028  avio_wb24(pb, 0); /* flags */
3029  avio_wb32(pb, entries); /* entry count */
3030  for (i = 0; i < entries; i++) {
3031  avio_wb32(pb, ctts_entries[i].count);
3032  avio_wb32(pb, ctts_entries[i].offset);
3033  }
3034  av_free(ctts_entries);
3035  return atom_size;
3036 }
3037 
3038 /* Time to sample atom */
3039 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
3040 {
3041  MOVStts *stts_entries = NULL;
3042  uint32_t entries = -1;
3043  uint32_t atom_size;
3044  int i;
3045 
3046  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
3047  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
3048  if (!stts_entries)
3049  return AVERROR(ENOMEM);
3050  stts_entries[0].count = track->sample_count;
3051  stts_entries[0].duration = 1;
3052  entries = 1;
3053  } else {
3054  if (track->entry) {
3055  stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */
3056  if (!stts_entries)
3057  return AVERROR(ENOMEM);
3058  }
3059  for (i = 0; i < track->entry; i++) {
3060  int duration = get_cluster_duration(track, i);
3061  if (i && duration == stts_entries[entries].duration) {
3062  stts_entries[entries].count++; /* compress */
3063  } else {
3064  entries++;
3065  stts_entries[entries].duration = duration;
3066  stts_entries[entries].count = 1;
3067  }
3068  }
3069  entries++; /* last one */
3070  }
3071  atom_size = 16 + (entries * 8);
3072  avio_wb32(pb, atom_size); /* size */
3073  ffio_wfourcc(pb, "stts");
3074  avio_wb32(pb, 0); /* version & flags */
3075  avio_wb32(pb, entries); /* entry count */
3076  for (i = 0; i < entries; i++) {
3077  avio_wb32(pb, stts_entries[i].count);
3078  avio_wb32(pb, stts_entries[i].duration);
3079  }
3080  av_free(stts_entries);
3081  return atom_size;
3082 }
3083 
3084 static int mov_write_dref_tag(AVIOContext *pb)
3085 {
3086  avio_wb32(pb, 28); /* size */
3087  ffio_wfourcc(pb, "dref");
3088  avio_wb32(pb, 0); /* version & flags */
3089  avio_wb32(pb, 1); /* entry count */
3090 
3091  avio_wb32(pb, 0xc); /* size */
3092  //FIXME add the alis and rsrc atom
3093  ffio_wfourcc(pb, "url ");
3094  avio_wb32(pb, 1); /* version & flags */
3095 
3096  return 28;
3097 }
3098 
3099 static int mov_preroll_write_stbl_atoms(AVIOContext *pb, MOVTrack *track)
3100 {
3101  struct sgpd_entry {
3102  int count;
3103  int16_t roll_distance;
3104  int group_description_index;
3105  };
3106 
3107  struct sgpd_entry *sgpd_entries = NULL;
3108  int entries = -1;
3109  int group = 0;
3110  int i, j;
3111 
3112  const int OPUS_SEEK_PREROLL_MS = 80;
3113  int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,
3114  (AVRational){1, 1000},
3115  (AVRational){1, 48000});
3116 
3117  if (!track->entry)
3118  return 0;
3119 
3120  sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));
3121  if (!sgpd_entries)
3122  return AVERROR(ENOMEM);
3123 
3124  av_assert0(track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC);
3125 
3126  if (track->par->codec_id == AV_CODEC_ID_OPUS) {
3127  for (i = 0; i < track->entry; i++) {
3128  int roll_samples_remaining = roll_samples;
3129  int distance = 0;
3130  for (j = i - 1; j >= 0; j--) {
3131  roll_samples_remaining -= get_cluster_duration(track, j);
3132  distance++;
3133  if (roll_samples_remaining <= 0)
3134  break;
3135  }
3136  /* We don't have enough preceeding samples to compute a valid
3137  roll_distance here, so this sample can't be independently
3138  decoded. */
3139  if (roll_samples_remaining > 0)
3140  distance = 0;
3141  /* Verify distance is a maximum of 32 (2.5ms) packets. */
3142  if (distance > 32)
3143  return AVERROR_INVALIDDATA;
3144  if (i && distance == sgpd_entries[entries].roll_distance) {
3145  sgpd_entries[entries].count++;
3146  } else {
3147  entries++;
3148  sgpd_entries[entries].count = 1;
3149  sgpd_entries[entries].roll_distance = distance;
3150  sgpd_entries[entries].group_description_index = distance ? ++group : 0;
3151  }
3152  }
3153  } else {
3154  entries++;
3155  sgpd_entries[entries].count = track->sample_count;
3156  sgpd_entries[entries].roll_distance = 1;
3157  sgpd_entries[entries].group_description_index = ++group;
3158  }
3159  entries++;
3160 
3161  if (!group) {
3162  av_free(sgpd_entries);
3163  return 0;
3164  }
3165 
3166  /* Write sgpd tag */
3167  avio_wb32(pb, 24 + (group * 2)); /* size */
3168  ffio_wfourcc(pb, "sgpd");
3169  avio_wb32(pb, 1 << 24); /* fullbox */
3170  ffio_wfourcc(pb, "roll");
3171  avio_wb32(pb, 2); /* default_length */
3172  avio_wb32(pb, group); /* entry_count */
3173  for (i = 0; i < entries; i++) {
3174  if (sgpd_entries[i].group_description_index) {
3175  avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */
3176  }
3177  }
3178 
3179  /* Write sbgp tag */
3180  avio_wb32(pb, 20 + (entries * 8)); /* size */
3181  ffio_wfourcc(pb, "sbgp");
3182  avio_wb32(pb, 0); /* fullbox */
3183  ffio_wfourcc(pb, "roll");
3184  avio_wb32(pb, entries); /* entry_count */
3185  for (i = 0; i < entries; i++) {
3186  avio_wb32(pb, sgpd_entries[i].count); /* sample_count */
3187  avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */
3188  }
3189 
3190  av_free(sgpd_entries);
3191  return 0;
3192 }
3193 
3194 static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
3195 {
3196  int64_t pos = avio_tell(pb);
3197  int ret = 0;
3198 
3199  avio_wb32(pb, 0); /* size */
3200  ffio_wfourcc(pb, "stbl");
3201  if ((ret = mov_write_stsd_tag(s, pb, mov, track)) < 0)
3202  return ret;
3203  mov_write_stts_tag(pb, track);
3204  if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
3205  track->par->codec_id == AV_CODEC_ID_TRUEHD ||
3206  track->par->codec_id == AV_CODEC_ID_MPEGH_3D_AUDIO ||
3207  (track->par->codec_id == AV_CODEC_ID_AAC && track->par->profile == AV_PROFILE_AAC_USAC) ||
3208  track->par->codec_tag == MKTAG('r','t','p',' ')) &&
3209  track->has_keyframes && track->has_keyframes < track->entry)
3210  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
3211  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && track->has_disposable)
3212  mov_write_sdtp_tag(pb, track);
3213  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
3214  mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
3215  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
3216  track->flags & MOV_TRACK_CTTS && track->entry) {
3217 
3218  if ((ret = mov_write_ctts_tag(s, pb, track)) < 0)
3219  return ret;
3220  }
3221  mov_write_stsc_tag(pb, track);
3222  mov_write_stsz_tag(pb, track);
3223  mov_write_stco_tag(pb, track);
3224  if (track->cenc.aes_ctr && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
3225  ff_mov_cenc_write_stbl_atoms(&track->cenc, pb, 0);
3226  }
3227  if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {
3228  mov_preroll_write_stbl_atoms(pb, track);
3229  }
3230  return update_size(pb, pos);
3231 }
3232 
3233 static int mov_write_dinf_tag(AVIOContext *pb)
3234 {
3235  int64_t pos = avio_tell(pb);
3236  avio_wb32(pb, 0); /* size */
3237  ffio_wfourcc(pb, "dinf");
3238  mov_write_dref_tag(pb);
3239  return update_size(pb, pos);
3240 }
3241 
3242 static int mov_write_nmhd_tag(AVIOContext *pb)
3243 {
3244  avio_wb32(pb, 12);
3245  ffio_wfourcc(pb, "nmhd");
3246  avio_wb32(pb, 0);
3247  return 12;
3248 }
3249 
3250 static int mov_write_sthd_tag(AVIOContext *pb)
3251 {
3252  avio_wb32(pb, 12);
3253  ffio_wfourcc(pb, "sthd");
3254  avio_wb32(pb, 0);
3255  return 12;
3256 }
3257 
3258 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
3259 {
3260  int64_t pos = avio_tell(pb);
3261  const char *font = "Lucida Grande";
3262  avio_wb32(pb, 0); /* size */
3263  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
3264  avio_wb32(pb, 0); /* version & flags */
3265  avio_wb16(pb, 0); /* text font */
3266  avio_wb16(pb, 0); /* text face */
3267  avio_wb16(pb, 12); /* text size */
3268  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
3269  avio_wb16(pb, 0x0000); /* text color (red) */
3270  avio_wb16(pb, 0x0000); /* text color (green) */
3271  avio_wb16(pb, 0x0000); /* text color (blue) */
3272  avio_wb16(pb, 0xffff); /* background color (red) */
3273  avio_wb16(pb, 0xffff); /* background color (green) */
3274  avio_wb16(pb, 0xffff); /* background color (blue) */
3275  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
3276  avio_write(pb, font, strlen(font)); /* font name */
3277  return update_size(pb, pos);
3278 }
3279 
3280 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
3281 {
3282  int64_t pos = avio_tell(pb);
3283  avio_wb32(pb, 0); /* size */
3284  ffio_wfourcc(pb, "gmhd");
3285  avio_wb32(pb, 0x18); /* gmin size */
3286  ffio_wfourcc(pb, "gmin");/* generic media info */
3287  avio_wb32(pb, 0); /* version & flags */
3288  avio_wb16(pb, 0x40); /* graphics mode = */
3289  avio_wb16(pb, 0x8000); /* opColor (r?) */
3290  avio_wb16(pb, 0x8000); /* opColor (g?) */
3291  avio_wb16(pb, 0x8000); /* opColor (b?) */
3292  avio_wb16(pb, 0); /* balance */
3293  avio_wb16(pb, 0); /* reserved */
3294 
3295  /*
3296  * This special text atom is required for
3297  * Apple Quicktime chapters. The contents
3298  * don't appear to be documented, so the
3299  * bytes are copied verbatim.
3300  */
3301  if (track->tag != MKTAG('c','6','0','8')) {
3302  avio_wb32(pb, 0x2C); /* size */
3303  ffio_wfourcc(pb, "text");
3304  avio_wb16(pb, 0x01);
3305  avio_wb32(pb, 0x00);
3306  avio_wb32(pb, 0x00);
3307  avio_wb32(pb, 0x00);
3308  avio_wb32(pb, 0x01);
3309  avio_wb32(pb, 0x00);
3310  avio_wb32(pb, 0x00);
3311  avio_wb32(pb, 0x00);
3312  avio_wb32(pb, 0x00004000);
3313  avio_wb16(pb, 0x0000);
3314  }
3315 
3316  if (track->par->codec_tag == MKTAG('t','m','c','d')) {
3317  int64_t tmcd_pos = avio_tell(pb);
3318  avio_wb32(pb, 0); /* size */
3319  ffio_wfourcc(pb, "tmcd");
3320  mov_write_tcmi_tag(pb, track);
3321  update_size(pb, tmcd_pos);
3322  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
3323  int64_t gpmd_pos = avio_tell(pb);
3324  avio_wb32(pb, 0); /* size */
3325  ffio_wfourcc(pb, "gpmd");
3326  avio_wb32(pb, 0); /* version */
3327  update_size(pb, gpmd_pos);
3328  }
3329  return update_size(pb, pos);
3330 }
3331 
3332 static int mov_write_smhd_tag(AVIOContext *pb)
3333 {
3334  avio_wb32(pb, 16); /* size */
3335  ffio_wfourcc(pb, "smhd");
3336  avio_wb32(pb, 0); /* version & flags */
3337  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
3338  avio_wb16(pb, 0); /* reserved */
3339  return 16;
3340 }
3341 
3342 static int mov_write_vmhd_tag(AVIOContext *pb)
3343 {
3344  avio_wb32(pb, 0x14); /* size (always 0x14) */
3345  ffio_wfourcc(pb, "vmhd");
3346  avio_wb32(pb, 0x01); /* version & flags */
3347  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
3348  return 0x14;
3349 }
3350 
3351 static int is_clcp_track(MOVTrack *track)
3352 {
3353  return track->tag == MKTAG('c','7','0','8') ||
3354  track->tag == MKTAG('c','6','0','8');
3355 }
3356 
3357 static int mov_write_hdlr_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
3358 {
3359  MOVMuxContext *mov = s->priv_data;
3360  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
3361  int64_t pos = avio_tell(pb);
3362  size_t descr_len;
3363 
3364  hdlr = "dhlr";
3365  hdlr_type = "url ";
3366  descr = "DataHandler";
3367 
3368  if (track) {
3369  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
3370  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3371  if (track->mode == MODE_AVIF) {
3372  hdlr_type = (track == &mov->tracks[0]) ? "pict" : "auxv";
3373  descr = "PictureHandler";
3374  } else {
3375  hdlr_type = "vide";
3376  descr = "VideoHandler";
3377  }
3378  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
3379  hdlr_type = "soun";
3380  descr = "SoundHandler";
3381  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3382  if (is_clcp_track(track)) {
3383  hdlr_type = "clcp";
3384  descr = "ClosedCaptionHandler";
3385  } else {
3386  if (track->tag == MKTAG('t','x','3','g')) {
3387  hdlr_type = "sbtl";
3388  } else if (track->tag == MKTAG('m','p','4','s')) {
3389  hdlr_type = "subp";
3390  } else if (track->tag == MOV_MP4_TTML_TAG) {
3391  hdlr_type = "subt";
3392  } else {
3393  hdlr_type = "text";
3394  }
3395  descr = "SubtitleHandler";
3396  }
3397  } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
3398  hdlr_type = "hint";
3399  descr = "HintHandler";
3400  } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
3401  hdlr_type = "tmcd";
3402  descr = "TimeCodeHandler";
3403  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
3404  hdlr_type = "meta";
3405  descr = "GoPro MET"; // GoPro Metadata
3406  } else {
3407  av_log(s, AV_LOG_WARNING,
3408  "Unknown hdlr_type for %s, writing dummy values\n",
3409  av_fourcc2str(track->par->codec_tag));
3410  }
3411  if (track->st) {
3412  // hdlr.name is used by some players to identify the content title
3413  // of the track. So if an alternate handler description is
3414  // specified, use it.
3415  AVDictionaryEntry *t;
3416  t = av_dict_get(track->st->metadata, "handler_name", NULL, 0);
3417  if (t && utf8len(t->value))
3418  descr = t->value;
3419  }
3420  }
3421 
3422  if (mov->empty_hdlr_name) /* expressly allowed by QTFF and not prohibited in ISO 14496-12 8.4.3.3 */
3423  descr = "";
3424 
3425  avio_wb32(pb, 0); /* size */
3426  ffio_wfourcc(pb, "hdlr");
3427  avio_wb32(pb, 0); /* Version & flags */
3428  avio_write(pb, hdlr, 4); /* handler */
3429  ffio_wfourcc(pb, hdlr_type); /* handler type */
3430  avio_wb32(pb, 0); /* reserved */
3431  avio_wb32(pb, 0); /* reserved */
3432  avio_wb32(pb, 0); /* reserved */
3433  descr_len = strlen(descr);
3434  if (!track || track->mode == MODE_MOV)
3435  avio_w8(pb, descr_len); /* pascal string */
3436  avio_write(pb, descr, descr_len); /* handler description */
3437  if (track && track->mode != MODE_MOV)
3438  avio_w8(pb, 0); /* c string */
3439  return update_size(pb, pos);
3440 }
3441 
3442 static int mov_write_pitm_tag(AVIOContext *pb, int item_id)
3443 {
3444  int64_t pos = avio_tell(pb);
3445  avio_wb32(pb, 0); /* size */
3446  ffio_wfourcc(pb, "pitm");
3447  avio_wb32(pb, 0); /* Version & flags */
3448  avio_wb16(pb, item_id); /* item_id */
3449  return update_size(pb, pos);
3450 }
3451 
3452 static int mov_write_iloc_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3453 {
3454  int64_t pos = avio_tell(pb);
3455  avio_wb32(pb, 0); /* size */
3456  ffio_wfourcc(pb, "iloc");
3457  avio_wb32(pb, 0); /* Version & flags */
3458  avio_w8(pb, (4 << 4) + 4); /* offset_size(4) and length_size(4) */
3459  avio_w8(pb, 0); /* base_offset_size(4) and reserved(4) */
3460  avio_wb16(pb, mov->nb_streams); /* item_count */
3461 
3462  for (int i = 0; i < mov->nb_streams; i++) {
3463  avio_wb16(pb, i + 1); /* item_id */
3464  avio_wb16(pb, 0); /* data_reference_index */
3465  avio_wb16(pb, 1); /* extent_count */
3466  mov->avif_extent_pos[i] = avio_tell(pb);
3467  avio_wb32(pb, 0); /* extent_offset (written later) */
3468  // For animated AVIF, we simply write the first packet's size.
3469  avio_wb32(pb, mov->avif_extent_length[i]); /* extent_length */
3470  }
3471 
3472  return update_size(pb, pos);
3473 }
3474 
3475 static int mov_write_iinf_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3476 {
3477  int64_t iinf_pos = avio_tell(pb);
3478  avio_wb32(pb, 0); /* size */
3479  ffio_wfourcc(pb, "iinf");
3480  avio_wb32(pb, 0); /* Version & flags */
3481  avio_wb16(pb, mov->nb_streams); /* entry_count */
3482 
3483  for (int i = 0; i < mov->nb_streams; i++) {
3484  int64_t infe_pos = avio_tell(pb);
3485  avio_wb32(pb, 0); /* size */
3486  ffio_wfourcc(pb, "infe");
3487  avio_w8(pb, 0x2); /* Version */
3488  avio_wb24(pb, 0); /* flags */
3489  avio_wb16(pb, i + 1); /* item_id */
3490  avio_wb16(pb, 0); /* item_protection_index */
3491  avio_write(pb, "av01", 4); /* item_type */
3492  avio_write(pb, !i ? "Color\0" : "Alpha\0", 6); /* item_name */
3493  update_size(pb, infe_pos);
3494  }
3495 
3496  return update_size(pb, iinf_pos);
3497 }
3498 
3499 
3500 static int mov_write_iref_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3501 {
3502  int64_t auxl_pos;
3503  int64_t iref_pos = avio_tell(pb);
3504  avio_wb32(pb, 0); /* size */
3505  ffio_wfourcc(pb, "iref");
3506  avio_wb32(pb, 0); /* Version & flags */
3507 
3508  auxl_pos = avio_tell(pb);
3509  avio_wb32(pb, 0); /* size */
3510  ffio_wfourcc(pb, "auxl");
3511  avio_wb16(pb, 2); /* from_item_ID */
3512  avio_wb16(pb, 1); /* reference_count */
3513  avio_wb16(pb, 1); /* to_item_ID */
3514  update_size(pb, auxl_pos);
3515 
3516  return update_size(pb, iref_pos);
3517 }
3518 
3519 static int mov_write_ispe_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3520  int stream_index)
3521 {
3522  int64_t pos = avio_tell(pb);
3523  avio_wb32(pb, 0); /* size */
3524  ffio_wfourcc(pb, "ispe");
3525  avio_wb32(pb, 0); /* Version & flags */
3526  avio_wb32(pb, s->streams[stream_index]->codecpar->width); /* image_width */
3527  avio_wb32(pb, s->streams[stream_index]->codecpar->height); /* image_height */
3528  return update_size(pb, pos);
3529 }
3530 
3531 static int mov_write_pixi_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3532  int stream_index)
3533 {
3534  int64_t pos = avio_tell(pb);
3535  const AVPixFmtDescriptor *pixdesc =
3536  av_pix_fmt_desc_get(s->streams[stream_index]->codecpar->format);
3537  avio_wb32(pb, 0); /* size */
3538  ffio_wfourcc(pb, "pixi");
3539  avio_wb32(pb, 0); /* Version & flags */
3540  avio_w8(pb, pixdesc->nb_components); /* num_channels */
3541  for (int i = 0; i < pixdesc->nb_components; ++i) {
3542  avio_w8(pb, pixdesc->comp[i].depth); /* bits_per_channel */
3543  }
3544  return update_size(pb, pos);
3545 }
3546 
3547 static int mov_write_ipco_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3548 {
3549  int64_t pos = avio_tell(pb);
3550  avio_wb32(pb, 0); /* size */
3551  ffio_wfourcc(pb, "ipco");
3552  for (int i = 0; i < mov->nb_streams; i++) {
3553  mov_write_ispe_tag(pb, mov, s, i);
3554  mov_write_pixi_tag(pb, mov, s, i);
3555  mov_write_av1c_tag(pb, &mov->tracks[i]);
3556  if (!i)
3557  mov_write_colr_tag(pb, &mov->tracks[0], 0);
3558  else
3559  mov_write_aux_tag(pb, "auxC");
3560  }
3561  return update_size(pb, pos);
3562 }
3563 
3564 static int mov_write_ipma_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3565 {
3566  int64_t pos = avio_tell(pb);
3567  avio_wb32(pb, 0); /* size */
3568  ffio_wfourcc(pb, "ipma");
3569  avio_wb32(pb, 0); /* Version & flags */
3570  avio_wb32(pb, mov->nb_streams); /* entry_count */
3571 
3572  for (int i = 0, index = 1; i < mov->nb_streams; i++) {
3573  avio_wb16(pb, i + 1); /* item_ID */
3574  avio_w8(pb, 4); /* association_count */
3575 
3576  // ispe association.
3577  avio_w8(pb, index++); /* essential and property_index */
3578  // pixi association.
3579  avio_w8(pb, index++); /* essential and property_index */
3580  // av1C association.
3581  avio_w8(pb, 0x80 | index++); /* essential and property_index */
3582  // colr/auxC association.
3583  avio_w8(pb, index++); /* essential and property_index */
3584  }
3585  return update_size(pb, pos);
3586 }
3587 
3588 static int mov_write_iprp_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3589 {
3590  int64_t pos = avio_tell(pb);
3591  avio_wb32(pb, 0); /* size */
3592  ffio_wfourcc(pb, "iprp");
3593  mov_write_ipco_tag(pb, mov, s);
3594  mov_write_ipma_tag(pb, mov, s);
3595  return update_size(pb, pos);
3596 }
3597 
3598 static int mov_write_hmhd_tag(AVIOContext *pb)
3599 {
3600  /* This atom must be present, but leaving the values at zero
3601  * seems harmless. */
3602  avio_wb32(pb, 28); /* size */
3603  ffio_wfourcc(pb, "hmhd");
3604  avio_wb32(pb, 0); /* version, flags */
3605  avio_wb16(pb, 0); /* maxPDUsize */
3606  avio_wb16(pb, 0); /* avgPDUsize */
3607  avio_wb32(pb, 0); /* maxbitrate */
3608  avio_wb32(pb, 0); /* avgbitrate */
3609  avio_wb32(pb, 0); /* reserved */
3610  return 28;
3611 }
3612 
3613 static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
3614 {
3615  int64_t pos = avio_tell(pb);
3616  int ret;
3617 
3618  avio_wb32(pb, 0); /* size */
3619  ffio_wfourcc(pb, "minf");
3620  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
3621  mov_write_vmhd_tag(pb);
3622  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3623  mov_write_smhd_tag(pb);
3624  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3625  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
3626  mov_write_gmhd_tag(pb, track);
3627  } else if (track->tag == MOV_MP4_TTML_TAG) {
3628  mov_write_sthd_tag(pb);
3629  } else {
3630  mov_write_nmhd_tag(pb);
3631  }
3632  } else if (track->tag == MKTAG('r','t','p',' ')) {
3633  mov_write_hmhd_tag(pb);
3634  } else if (track->tag == MKTAG('t','m','c','d')) {
3635  if (track->mode != MODE_MOV)
3636  mov_write_nmhd_tag(pb);
3637  else
3638  mov_write_gmhd_tag(pb, track);
3639  } else if (track->tag == MKTAG('g','p','m','d')) {
3640  mov_write_gmhd_tag(pb, track);
3641  }
3642  if (track->mode == MODE_MOV) /* ISO 14496-12 8.4.3.1 specifies hdlr only within mdia or meta boxes */
3643  mov_write_hdlr_tag(s, pb, NULL);
3644  mov_write_dinf_tag(pb);
3645  if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
3646  return ret;
3647  return update_size(pb, pos);
3648 }
3649 
3650 static void get_pts_range(MOVMuxContext *mov, MOVTrack *track,
3651  int64_t *start, int64_t *end)
3652 {
3653  if (track->tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd) {
3654  // tmcd tracks gets track_duration set in mov_write_moov_tag from
3655  // another track's duration, while the end_pts may be left at zero.
3656  // Calculate the pts duration for that track instead.
3657  get_pts_range(mov, &mov->tracks[track->src_track], start, end);
3658  *start = av_rescale(*start, track->timescale,
3659  mov->tracks[track->src_track].timescale);
3660  *end = av_rescale(*end, track->timescale,
3661  mov->tracks[track->src_track].timescale);
3662  return;
3663  }
3664  if (track->end_pts != AV_NOPTS_VALUE &&
3665  track->start_dts != AV_NOPTS_VALUE &&
3666  track->start_cts != AV_NOPTS_VALUE) {
3667  *start = track->start_dts + track->start_cts;
3668  *end = track->end_pts;
3669  return;
3670  }
3671  *start = 0;
3672  *end = track->track_duration;
3673 }
3674 
3675 static int64_t calc_samples_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3676 {
3677  int64_t start, end;
3678  get_pts_range(mov, track, &start, &end);
3679  return end - start;
3680 }
3681 
3682 // Calculate the actual duration of the track, after edits.
3683 // If it starts with a pts < 0, that is removed by the edit list.
3684 // If it starts with a pts > 0, the edit list adds a delay before that.
3685 // Thus, with edit lists enabled, the post-edit output of the file is
3686 // starting with pts=0.
3687 static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3688 {
3689  int64_t start, end;
3690  get_pts_range(mov, track, &start, &end);
3691  if (mov->use_editlist != 0)
3692  start = 0;
3693  return end - start;
3694 }
3695 
3696 static int mov_mdhd_mvhd_tkhd_version(MOVMuxContext *mov, MOVTrack *track, int64_t duration)
3697 {
3698  if (track && track->mode == MODE_ISM)
3699  return 1;
3700  if (duration < INT32_MAX)
3701  return 0;
3702  return 1;
3703 }
3704 
3705 static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3706  MOVTrack *track)
3707 {
3708  int64_t duration = calc_samples_pts_duration(mov, track);
3709  int version = mov_mdhd_mvhd_tkhd_version(mov, track, duration);
3710 
3711  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
3712  ffio_wfourcc(pb, "mdhd");
3713  avio_w8(pb, version);
3714  avio_wb24(pb, 0); /* flags */
3715  if (version == 1) {
3716  avio_wb64(pb, track->time);
3717  avio_wb64(pb, track->time);
3718  } else {
3719  avio_wb32(pb, track->time); /* creation time */
3720  avio_wb32(pb, track->time); /* modification time */
3721  }
3722  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
3723  if (!track->entry && mov->mode == MODE_ISM)
3724  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3725  else if (!track->entry)
3726  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3727  else
3728  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration); /* duration */
3729  avio_wb16(pb, track->language); /* language */
3730  avio_wb16(pb, 0); /* reserved (quality) */
3731 
3732  if (version != 0 && track->mode == MODE_MOV) {
3733  av_log(NULL, AV_LOG_ERROR,
3734  "FATAL error, file duration too long for timebase, this file will not be\n"
3735  "playable with QuickTime. Choose a different timebase with "
3736  "-video_track_timescale or a different container format\n");
3737  }
3738 
3739  return 32;
3740 }
3741 
3742 static int mov_write_mdia_tag(AVFormatContext *s, AVIOContext *pb,
3743  MOVMuxContext *mov, MOVTrack *track)
3744 {
3745  int64_t pos = avio_tell(pb);
3746  int ret;
3747 
3748  avio_wb32(pb, 0); /* size */
3749  ffio_wfourcc(pb, "mdia");
3750  mov_write_mdhd_tag(pb, mov, track);
3751  mov_write_hdlr_tag(s, pb, track);
3752  if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)
3753  return ret;
3754  return update_size(pb, pos);
3755 }
3756 
3757 /* transformation matrix
3758  |a b u|
3759  |c d v|
3760  |tx ty w| */
3761 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
3762  int16_t d, int16_t tx, int16_t ty)
3763 {
3764  avio_wb32(pb, a << 16); /* 16.16 format */
3765  avio_wb32(pb, b << 16); /* 16.16 format */
3766  avio_wb32(pb, 0); /* u in 2.30 format */
3767  avio_wb32(pb, c << 16); /* 16.16 format */
3768  avio_wb32(pb, d << 16); /* 16.16 format */
3769  avio_wb32(pb, 0); /* v in 2.30 format */
3770  avio_wb32(pb, tx << 16); /* 16.16 format */
3771  avio_wb32(pb, ty << 16); /* 16.16 format */
3772  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
3773 }
3774 
3775 static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3776  MOVTrack *track, AVStream *st)
3777 {
3778  int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
3779  mov->movie_timescale, track->timescale,
3780  AV_ROUND_UP);
3781  int version;
3782  int flags = MOV_TKHD_FLAG_IN_MOVIE;
3783  int group = 0;
3784 
3785  uint32_t *display_matrix = NULL;
3786  int i;
3787 
3788  if (mov->mode == MODE_AVIF)
3789  if (!mov->avif_loop_count)
3790  duration = INT64_MAX;
3791  else
3792  duration *= mov->avif_loop_count;
3793 
3794  if (st) {
3795  const AVPacketSideData *sd;
3796  if (mov->per_stream_grouping)
3797  group = st->index;
3798  else
3799  group = st->codecpar->codec_type;
3800 
3801  sd = av_packet_side_data_get(st->codecpar->coded_side_data,
3802  st->codecpar->nb_coded_side_data,
3803  AV_PKT_DATA_DISPLAYMATRIX);
3804  if (sd && sd->size == 9 * sizeof(*display_matrix))
3805  display_matrix = (uint32_t *)sd->data;
3806  }
3807 
3808  if (track->flags & MOV_TRACK_ENABLED)
3809  flags |= MOV_TKHD_FLAG_ENABLED;
3810 
3811  version = mov_mdhd_mvhd_tkhd_version(mov, track, duration);
3812 
3813  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
3814  ffio_wfourcc(pb, "tkhd");
3815  avio_w8(pb, version);
3816  avio_wb24(pb, flags);
3817  if (version == 1) {
3818  avio_wb64(pb, track->time);
3819  avio_wb64(pb, track->time);
3820  } else {
3821  avio_wb32(pb, track->time); /* creation time */
3822  avio_wb32(pb, track->time); /* modification time */
3823  }
3824  avio_wb32(pb, track->track_id); /* track-id */
3825  avio_wb32(pb, 0); /* reserved */
3826  if (!track->entry && mov->mode == MODE_ISM)
3827  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3828  else if (!track->entry)
3829  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3830  else
3831  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
3832 
3833  avio_wb32(pb, 0); /* reserved */
3834  avio_wb32(pb, 0); /* reserved */
3835  avio_wb16(pb, 0); /* layer */
3836  avio_wb16(pb, group); /* alternate group) */
3837  /* Volume, only for audio */
3838  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3839  avio_wb16(pb, 0x0100);
3840  else
3841  avio_wb16(pb, 0);
3842  avio_wb16(pb, 0); /* reserved */
3843 
3844  /* Matrix structure */
3845  if (display_matrix) {
3846  for (i = 0; i < 9; i++)
3847  avio_wb32(pb, display_matrix[i]);
3848  } else {
3849  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3850  }
3851  /* Track width and height, for visual only */
3852  if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
3853  track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
3854  int64_t track_width_1616;
3855  if (track->mode == MODE_MOV || track->mode == MODE_AVIF) {
3856  track_width_1616 = track->par->width * 0x10000ULL;
3857  } else {
3858  track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
3859  track->par->width * 0x10000LL,
3860  st->sample_aspect_ratio.den);
3861  if (!track_width_1616 ||
3862  track->height != track->par->height ||
3863  track_width_1616 > UINT32_MAX)
3864  track_width_1616 = track->par->width * 0x10000ULL;
3865  }
3866  if (track_width_1616 > UINT32_MAX) {
3867  av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
3868  track_width_1616 = 0;
3869  }
3870  avio_wb32(pb, track_width_1616);
3871  if (track->height > 0xFFFF) {
3872  av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
3873  avio_wb32(pb, 0);
3874  } else
3875  avio_wb32(pb, track->height * 0x10000U);
3876  } else {
3877  avio_wb32(pb, 0);
3878  avio_wb32(pb, 0);
3879  }
3880  return 0x5c;
3881 }
3882 
3883 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
3884 {
3885  int32_t width = av_rescale(track->par->sample_aspect_ratio.num, track->par->width,
3886  track->par->sample_aspect_ratio.den);
3887 
3888  int64_t pos = avio_tell(pb);
3889 
3890  avio_wb32(pb, 0); /* size */
3891  ffio_wfourcc(pb, "tapt");
3892 
3893  avio_wb32(pb, 20);
3894  ffio_wfourcc(pb, "clef");
3895  avio_wb32(pb, 0);
3896  avio_wb32(pb, width << 16);
3897  avio_wb32(pb, track->par->height << 16);
3898 
3899  avio_wb32(pb, 20);
3900  ffio_wfourcc(pb, "prof");
3901  avio_wb32(pb, 0);
3902  avio_wb32(pb, width << 16);
3903  avio_wb32(pb, track->par->height << 16);
3904 
3905  avio_wb32(pb, 20);
3906  ffio_wfourcc(pb, "enof");
3907  avio_wb32(pb, 0);
3908  avio_wb32(pb, track->par->width << 16);
3909  avio_wb32(pb, track->par->height << 16);
3910 
3911  return update_size(pb, pos);
3912 }
3913 
3914 // This box is written in the following cases:
3915 // * Seems important for the psp playback. Without it the movie seems to hang.
3916 // * Used for specifying the looping behavior of animated AVIF (as specified
3917 // in Section 9.6 of the HEIF specification ISO/IEC 23008-12).
3918 static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
3919  MOVTrack *track)
3920 {
3921  int64_t duration = av_rescale_rnd(calc_samples_pts_duration(mov, track),
3922  mov->movie_timescale, track->timescale,
3923  AV_ROUND_UP);
3924  int version = duration < INT32_MAX ? 0 : 1;
3925  int entry_size, entry_count, size;
3926  int64_t delay, start_ct = track->start_cts;
3927  int64_t start_dts = track->start_dts;
3928  int flags = 0;
3929 
3930  if (track->entry) {
3931  if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {
3932 
3933  av_log(mov->fc, AV_LOG_DEBUG,
3934  "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",
3935  track->cluster[0].dts, track->cluster[0].cts,
3936  start_dts, start_ct, track->track_id);
3937  start_dts = track->cluster[0].dts;
3938  start_ct = track->cluster[0].cts;
3939  }
3940  }
3941 
3942  delay = av_rescale_rnd(start_dts + start_ct, mov->movie_timescale,
3943  track->timescale, AV_ROUND_DOWN);
3944 
3945  if (mov->mode == MODE_AVIF) {
3946  delay = 0;
3947  // Section 9.6.3 of ISO/IEC 23008-12: flags specifies repetition of the
3948  // edit list as follows: (flags & 1) equal to 0 specifies that the edit
3949  // list is not repeated, while (flags & 1) equal to 1 specifies that the
3950  // edit list is repeated.
3951  flags = mov->avif_loop_count != 1;
3952  start_ct = 0;
3953  }
3954 
3955  version |= delay < INT32_MAX ? 0 : 1;
3956 
3957  entry_size = (version == 1) ? 20 : 12;
3958  entry_count = 1 + (delay > 0);
3959  size = 24 + entry_count * entry_size;
3960 
3961  /* write the atom data */
3962  avio_wb32(pb, size);
3963  ffio_wfourcc(pb, "edts");
3964  avio_wb32(pb, size - 8);
3965  ffio_wfourcc(pb, "elst");
3966  avio_w8(pb, version);
3967  avio_wb24(pb, flags); /* flags */
3968 
3969  avio_wb32(pb, entry_count);
3970  if (delay > 0) { /* add an empty edit to delay presentation */
3971  /* In the positive delay case, the delay includes the cts
3972  * offset, and the second edit list entry below trims out
3973  * the same amount from the actual content. This makes sure
3974  * that the offset last sample is included in the edit
3975  * list duration as well. */
3976  if (version == 1) {
3977  avio_wb64(pb, delay);
3978  avio_wb64(pb, -1);
3979  } else {
3980  avio_wb32(pb, delay);
3981  avio_wb32(pb, -1);
3982  }
3983  avio_wb32(pb, 0x00010000);
3984  } else if (mov->mode != MODE_AVIF) {
3985  /* Avoid accidentally ending up with start_ct = -1 which has got a
3986  * special meaning. Normally start_ct should end up positive or zero
3987  * here, but use FFMIN in case dts is a small positive integer
3988  * rounded to 0 when represented in movie timescale units. */
3989  av_assert0(av_rescale_rnd(start_dts, mov->movie_timescale, track->timescale, AV_ROUND_DOWN) <= 0);
3990  start_ct = -FFMIN(start_dts, 0);
3991  /* Note, this delay is calculated from the pts of the first sample,
3992  * ensuring that we don't reduce the duration for cases with
3993  * dts<0 pts=0. */
3994  duration += delay;
3995  }
3996 
3997  /* For fragmented files, we don't know the full length yet. Setting
3998  * duration to 0 allows us to only specify the offset, including
3999  * the rest of the content (from all future fragments) without specifying
4000  * an explicit duration. */
4001  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
4002  duration = 0;
4003 
4004  /* duration */
4005  if (version == 1) {
4006  avio_wb64(pb, duration);
4007  avio_wb64(pb, start_ct);
4008  } else {
4009  avio_wb32(pb, duration);
4010  avio_wb32(pb, start_ct);
4011  }
4012  avio_wb32(pb, 0x00010000);
4013  return size;
4014 }
4015 
4016 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
4017 {
4018  avio_wb32(pb, 20); // size
4019  ffio_wfourcc(pb, "tref");
4020  avio_wb32(pb, 12); // size (subatom)
4021  avio_wl32(pb, track->tref_tag);
4022  avio_wb32(pb, track->tref_id);
4023  return 20;
4024 }
4025 
4026 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
4027 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
4028 {
4029  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
4030  ffio_wfourcc(pb, "uuid");
4031  ffio_wfourcc(pb, "USMT");
4032  avio_wb32(pb, 0x21d24fce);
4033  avio_wb32(pb, 0xbb88695c);
4034  avio_wb32(pb, 0xfac9c740);
4035  avio_wb32(pb, 0x1c); // another size here!
4036  ffio_wfourcc(pb, "MTDT");
4037  avio_wb32(pb, 0x00010012);
4038  avio_wb32(pb, 0x0a);
4039  avio_wb32(pb, 0x55c40000);
4040  avio_wb32(pb, 0x1);
4041  avio_wb32(pb, 0x0);
4042  return 0x34;
4043 }
4044 
4045 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
4046 {
4047  AVFormatContext *ctx = track->rtp_ctx;
4048  char buf[1000] = "";
4049  int len;
4050 
4051  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
4052  NULL, NULL, 0, 0, ctx);
4053  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
4054  len = strlen(buf);
4055 
4056  avio_wb32(pb, len + 24);
4057  ffio_wfourcc(pb, "udta");
4058  avio_wb32(pb, len + 16);
4059  ffio_wfourcc(pb, "hnti");
4060  avio_wb32(pb, len + 8);
4061  ffio_wfourcc(pb, "sdp ");
4062  avio_write(pb, buf, len);
4063  return len + 24;
4064 }
4065 
4066 static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,
4067  const char *tag, const char *str)
4068 {
4069  int64_t pos = avio_tell(pb);
4070  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
4071  if (!t || !utf8len(t->value))
4072  return 0;
4073 
4074  avio_wb32(pb, 0); /* size */
4075  ffio_wfourcc(pb, tag); /* type */
4076  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
4077  return update_size(pb, pos);
4078 }
4079 
4080 static int mov_write_track_kind(AVIOContext *pb, const char *scheme_uri,
4081  const char *value)
4082 {
4083  int64_t pos = avio_tell(pb);
4084 
4085  /* Box|FullBox basics */
4086  avio_wb32(pb, 0); /* size placeholder */
4087  ffio_wfourcc(pb, (const unsigned char *)"kind");
4088  avio_w8(pb, 0); /* version = 0 */
4089  avio_wb24(pb, 0); /* flags = 0 */
4090 
4091  /* Required null-terminated scheme URI */
4092  avio_write(pb, (const unsigned char *)scheme_uri,
4093  strlen(scheme_uri));
4094  avio_w8(pb, 0);
4095 
4096  /* Optional value string */
4097  if (value && value[0])
4098  avio_write(pb, (const unsigned char *)value,
4099  strlen(value));
4100 
4101  avio_w8(pb, 0);
4102 
4103  return update_size(pb, pos);
4104 }
4105 
4106 static int mov_write_track_kinds(AVIOContext *pb, AVStream *st)
4107 {
4108  int ret = AVERROR_BUG;
4109 
4110  for (int i = 0; ff_mov_track_kind_table[i].scheme_uri; i++) {
4111  const struct MP4TrackKindMapping map = ff_mov_track_kind_table[i];
4112 
4113  for (int j = 0; map.value_maps[j].disposition; j++) {
4114  const struct MP4TrackKindValueMapping value_map = map.value_maps[j];
4115  if (!(st->disposition & value_map.disposition))
4116  continue;
4117 
4118  if ((ret = mov_write_track_kind(pb, map.scheme_uri, value_map.value)) < 0)
4119  return ret;
4120  }
4121  }
4122 
4123  return 0;
4124 }
4125 
4126 static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
4127  AVStream *st)
4128 {
4129  AVIOContext *pb_buf;
4130  int ret, size;
4131  uint8_t *buf;
4132 
4133  if (!st)
4134  return 0;
4135 
4136  ret = avio_open_dyn_buf(&pb_buf);
4137  if (ret < 0)
4138  return ret;
4139 
4140  if (mov->mode & (MODE_MP4|MODE_MOV))
4141  mov_write_track_metadata(pb_buf, st, "name", "title");
4142 
4143  if (mov->mode & MODE_MP4) {
4144  if ((ret = mov_write_track_kinds(pb_buf, st)) < 0)
4145  return ret;
4146  }
4147 
4148  if ((size = avio_get_dyn_buf(pb_buf, &buf)) > 0) {
4149  avio_wb32(pb, size + 8);
4150  ffio_wfourcc(pb, "udta");
4151  avio_write(pb, buf, size);
4152  }
4153  ffio_free_dyn_buf(&pb_buf);
4154 
4155  return 0;
4156 }
4157 
4158 static int mov_write_trak_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov,
4159  MOVTrack *track, AVStream *st)