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 "isom.h"
36 #include "av1.h"
37 #include "avc.h"
38 #include "libavcodec/ac3_parser_internal.h"
39 #include "libavcodec/dnxhddata.h"
40 #include "libavcodec/flac.h"
41 #include "libavcodec/get_bits.h"
42 
43 #include "libavcodec/internal.h"
44 #include "libavcodec/put_bits.h"
45 #include "libavcodec/vc1_common.h"
46 #include "libavcodec/raw.h"
47 #include "internal.h"
48 #include "libavutil/avstring.h"
49 #include "libavutil/channel_layout.h"
50 #include "libavutil/csp.h"
51 #include "libavutil/intfloat.h"
52 #include "libavutil/mathematics.h"
53 #include "libavutil/libm.h"
54 #include "libavutil/opt.h"
55 #include "libavutil/dict.h"
56 #include "libavutil/pixdesc.h"
57 #include "libavutil/stereo3d.h"
58 #include "libavutil/timecode.h"
59 #include "libavutil/dovi_meta.h"
60 #include "libavutil/uuid.h"
61 #include "hevc.h"
62 #include "rtpenc.h"
63 #include "mov_chan.h"
64 #include "movenc_ttml.h"
65 #include "mux.h"
66 #include "rawutils.h"
67 #include "ttmlenc.h"
68 #include "version.h"
69 #include "vpcc.h"
70 
71 static const AVOption options[] = {
72  { "movflags", "MOV muxer flags", offsetof(MOVMuxContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
73  { "rtphint", "Add RTP hint tracks", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_RTP_HINT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
74  { "moov_size", "maximum moov size so it can be placed at the begin", offsetof(MOVMuxContext, reserved_moov_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, 0 },
75  { "empty_moov", "Make the initial moov atom empty", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_EMPTY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
76  { "frag_keyframe", "Fragment at video keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_KEYFRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
77  { "frag_every_frame", "Fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_EVERY_FRAME}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
78  { "separate_moof", "Write separate moof/mdat atoms for each track", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SEPARATE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
79  { "frag_custom", "Flush fragments on caller requests", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_CUSTOM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
80  { "isml", "Create a live smooth streaming feed (for pushing to a publishing point)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_ISML}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
81  { "faststart", "Run a second pass to put the index (moov atom) at the beginning of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FASTSTART}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
82  { "omit_tfhd_offset", "Omit the base data offset in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_OMIT_TFHD_OFFSET}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
83  { "disable_chpl", "Disable Nero chapter atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DISABLE_CHPL}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
84  { "default_base_moof", "Set the default-base-is-moof flag in tfhd atoms", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DEFAULT_BASE_MOOF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
85  { "dash", "Write DASH compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DASH}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
86  { "cmaf", "Write CMAF compatible fragmented MP4", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_CMAF}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
87  { "frag_discont", "Signal that the next fragment is discontinuous from earlier ones", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_FRAG_DISCONT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
88  { "delay_moov", "Delay writing the initial moov until the first fragment is cut, or until the first fragment flush", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_DELAY_MOOV}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
89  { "global_sidx", "Write a global sidx index at the start of the file", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_GLOBAL_SIDX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
90  { "skip_sidx", "Skip writing of sidx atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_SIDX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
91  { "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, "movflags" },
92  { "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, "movflags" },
93  { "write_gama", "Write deprecated gama atom", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_WRITE_GAMA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
94  { "use_metadata_tags", "Use mdta atom for metadata.", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_USE_MDTA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
95  { "skip_trailer", "Skip writing the mfra/tfra/mfro trailer for fragmented files", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_SKIP_TRAILER}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
96  { "negative_cts_offsets", "Use negative CTS offsets (reducing the need for edit lists)", 0, AV_OPT_TYPE_CONST, {.i64 = FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "movflags" },
97  FF_RTP_FLAG_OPTS(MOVMuxContext, rtp_flags),
98  { "skip_iods", "Skip writing iods atom.", offsetof(MOVMuxContext, iods_skip), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
99  { "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},
100  { "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},
101  { "frag_duration", "Maximum fragment duration", offsetof(MOVMuxContext, max_fragment_duration), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
102  { "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},
103  { "frag_size", "Maximum fragment size", offsetof(MOVMuxContext, max_fragment_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
104  { "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},
105  { "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},
106  { "brand", "Override major brand", offsetof(MOVMuxContext, major_brand), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = AV_OPT_FLAG_ENCODING_PARAM },
107  { "use_editlist", "use edit list", offsetof(MOVMuxContext, use_editlist), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
108  { "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},
109  { "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},
110  { "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 },
111  { "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 },
112  { "encryption_key", "The media encryption key (hex)", offsetof(MOVMuxContext, encryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
113  { "encryption_kid", "The media encryption key identifier (hex)", offsetof(MOVMuxContext, encryption_kid), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_ENCODING_PARAM },
114  { "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},
115  { "write_btrt", "force or disable writing btrt", offsetof(MOVMuxContext, write_btrt), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
116  { "write_tmcd", "force or disable writing tmcd", offsetof(MOVMuxContext, write_tmcd), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
117  { "write_prft", "Write producer reference time box with specified time source", offsetof(MOVMuxContext, write_prft), AV_OPT_TYPE_INT, {.i64 = MOV_PRFT_NONE}, 0, MOV_PRFT_NB-1, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
118  { "wallclock", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_WALLCLOCK}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
119  { "pts", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = MOV_PRFT_SRC_PTS}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM, "prft"},
120  { "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},
121  { "movie_timescale", "set movie timescale", offsetof(MOVMuxContext, movie_timescale), AV_OPT_TYPE_INT, {.i64 = MOV_TIMESCALE}, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
122  { NULL },
123 };
124 
125 static const AVClass mov_isobmff_muxer_class = {
126  .class_name = "mov/mp4/tgp/psp/tg2/ipod/ismv/f4v muxer",
127  .item_name = av_default_item_name,
128  .option = options,
129  .version = LIBAVUTIL_VERSION_INT,
130 };
131 
132 static int get_moov_size(AVFormatContext *s);
133 static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt);
134 
135 static int utf8len(const uint8_t *b)
136 {
137  int len = 0;
138  int val;
139  while (*b) {
140  GET_UTF8(val, *b++, return -1;)
141  len++;
142  }
143  return len;
144 }
145 
146 //FIXME support 64 bit variant with wide placeholders
147 static int64_t update_size(AVIOContext *pb, int64_t pos)
148 {
149  int64_t curpos = avio_tell(pb);
150  avio_seek(pb, pos, SEEK_SET);
151  avio_wb32(pb, curpos - pos); /* rewrite size */
152  avio_seek(pb, curpos, SEEK_SET);
153 
154  return curpos - pos;
155 }
156 
157 static int co64_required(const MOVTrack *track)
158 {
159  if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX)
160  return 1;
161  return 0;
162 }
163 
164 static int is_cover_image(const AVStream *st)
165 {
166  /* Eg. AV_DISPOSITION_ATTACHED_PIC | AV_DISPOSITION_TIMED_THUMBNAILS
167  * is encoded as sparse video track */
168  return st && st->disposition == AV_DISPOSITION_ATTACHED_PIC;
169 }
170 
171 static int rtp_hinting_needed(const AVStream *st)
172 {
173  /* Add hint tracks for each real audio and video stream */
174  if (is_cover_image(st))
175  return 0;
176  return st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
177  st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
178 }
179 
180 /* Chunk offset atom */
181 static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track)
182 {
183  int i;
184  int mode64 = co64_required(track); // use 32 bit size variant if possible
185  int64_t pos = avio_tell(pb);
186  avio_wb32(pb, 0); /* size */
187  if (mode64)
188  ffio_wfourcc(pb, "co64");
189  else
190  ffio_wfourcc(pb, "stco");
191  avio_wb32(pb, 0); /* version & flags */
192  avio_wb32(pb, track->chunkCount); /* entry count */
193  for (i = 0; i < track->entry; i++) {
194  if (!track->cluster[i].chunkNum)
195  continue;
196  if (mode64 == 1)
197  avio_wb64(pb, track->cluster[i].pos + track->data_offset);
198  else
199  avio_wb32(pb, track->cluster[i].pos + track->data_offset);
200  }
201  return update_size(pb, pos);
202 }
203 
204 /* Sample size atom */
205 static int mov_write_stsz_tag(AVIOContext *pb, MOVTrack *track)
206 {
207  int equalChunks = 1;
208  int i, j, entries = 0, tst = -1, oldtst = -1;
209 
210  int64_t pos = avio_tell(pb);
211  avio_wb32(pb, 0); /* size */
212  ffio_wfourcc(pb, "stsz");
213  avio_wb32(pb, 0); /* version & flags */
214 
215  for (i = 0; i < track->entry; i++) {
216  tst = track->cluster[i].size / track->cluster[i].entries;
217  if (oldtst != -1 && tst != oldtst)
218  equalChunks = 0;
219  oldtst = tst;
220  entries += track->cluster[i].entries;
221  }
222  if (equalChunks && track->entry) {
223  int sSize = track->entry ? track->cluster[0].size / track->cluster[0].entries : 0;
224  sSize = FFMAX(1, sSize); // adpcm mono case could make sSize == 0
225  avio_wb32(pb, sSize); // sample size
226  avio_wb32(pb, entries); // sample count
227  } else {
228  avio_wb32(pb, 0); // sample size
229  avio_wb32(pb, entries); // sample count
230  for (i = 0; i < track->entry; i++) {
231  for (j = 0; j < track->cluster[i].entries; j++) {
232  avio_wb32(pb, track->cluster[i].size /
233  track->cluster[i].entries);
234  }
235  }
236  }
237  return update_size(pb, pos);
238 }
239 
240 /* Sample to chunk atom */
241 static int mov_write_stsc_tag(AVIOContext *pb, MOVTrack *track)
242 {
243  int index = 0, oldval = -1, i;
244  int64_t entryPos, curpos;
245 
246  int64_t pos = avio_tell(pb);
247  avio_wb32(pb, 0); /* size */
248  ffio_wfourcc(pb, "stsc");
249  avio_wb32(pb, 0); // version & flags
250  entryPos = avio_tell(pb);
251  avio_wb32(pb, track->chunkCount); // entry count
252  for (i = 0; i < track->entry; i++) {
253  if (oldval != track->cluster[i].samples_in_chunk && track->cluster[i].chunkNum) {
254  avio_wb32(pb, track->cluster[i].chunkNum); // first chunk
255  avio_wb32(pb, track->cluster[i].samples_in_chunk); // samples per chunk
256  avio_wb32(pb, 0x1); // sample description index
257  oldval = track->cluster[i].samples_in_chunk;
258  index++;
259  }
260  }
261  curpos = avio_tell(pb);
262  avio_seek(pb, entryPos, SEEK_SET);
263  avio_wb32(pb, index); // rewrite size
264  avio_seek(pb, curpos, SEEK_SET);
265 
266  return update_size(pb, pos);
267 }
268 
269 /* Sync sample atom */
270 static int mov_write_stss_tag(AVIOContext *pb, MOVTrack *track, uint32_t flag)
271 {
272  int64_t curpos, entryPos;
273  int i, index = 0;
274  int64_t pos = avio_tell(pb);
275  avio_wb32(pb, 0); // size
276  ffio_wfourcc(pb, flag == MOV_SYNC_SAMPLE ? "stss" : "stps");
277  avio_wb32(pb, 0); // version & flags
278  entryPos = avio_tell(pb);
279  avio_wb32(pb, track->entry); // entry count
280  for (i = 0; i < track->entry; i++) {
281  if (track->cluster[i].flags & flag) {
282  avio_wb32(pb, i + 1);
283  index++;
284  }
285  }
286  curpos = avio_tell(pb);
287  avio_seek(pb, entryPos, SEEK_SET);
288  avio_wb32(pb, index); // rewrite size
289  avio_seek(pb, curpos, SEEK_SET);
290  return update_size(pb, pos);
291 }
292 
293 /* Sample dependency atom */
294 static int mov_write_sdtp_tag(AVIOContext *pb, MOVTrack *track)
295 {
296  int i;
297  uint8_t leading, dependent, reference, redundancy;
298  int64_t pos = avio_tell(pb);
299  avio_wb32(pb, 0); // size
300  ffio_wfourcc(pb, "sdtp");
301  avio_wb32(pb, 0); // version & flags
302  for (i = 0; i < track->entry; i++) {
303  dependent = MOV_SAMPLE_DEPENDENCY_YES;
304  leading = reference = redundancy = MOV_SAMPLE_DEPENDENCY_UNKNOWN;
305  if (track->cluster[i].flags & MOV_DISPOSABLE_SAMPLE) {
306  reference = MOV_SAMPLE_DEPENDENCY_NO;
307  }
308  if (track->cluster[i].flags & MOV_SYNC_SAMPLE) {
309  dependent = MOV_SAMPLE_DEPENDENCY_NO;
310  }
311  avio_w8(pb, (leading << 6) | (dependent << 4) |
312  (reference << 2) | redundancy);
313  }
314  return update_size(pb, pos);
315 }
316 
317 static int mov_write_amr_tag(AVIOContext *pb, MOVTrack *track)
318 {
319  avio_wb32(pb, 0x11); /* size */
320  if (track->mode == MODE_MOV) ffio_wfourcc(pb, "samr");
321  else ffio_wfourcc(pb, "damr");
322  ffio_wfourcc(pb, "FFMP");
323  avio_w8(pb, 0); /* decoder version */
324 
325  avio_wb16(pb, 0x81FF); /* Mode set (all modes for AMR_NB) */
326  avio_w8(pb, 0x00); /* Mode change period (no restriction) */
327  avio_w8(pb, 0x01); /* Frames per sample */
328  return 0x11;
329 }
330 
331 struct eac3_info {
332  AVPacket *pkt;
333  uint8_t ec3_done;
334  uint8_t num_blocks;
335 
336  /* Layout of the EC3SpecificBox */
337  /* maximum bitrate */
338  uint16_t data_rate;
339  int8_t ac3_bit_rate_code;
340  /* number of independent substreams */
341  uint8_t num_ind_sub;
342  struct {
343  /* sample rate code (see ff_ac3_sample_rate_tab) 2 bits */
344  uint8_t fscod;
345  /* bit stream identification 5 bits */
346  uint8_t bsid;
347  /* one bit reserved */
348  /* audio service mixing (not supported yet) 1 bit */
349  /* bit stream mode 3 bits */
350  uint8_t bsmod;
351  /* audio coding mode 3 bits */
352  uint8_t acmod;
353  /* sub woofer on 1 bit */
354  uint8_t lfeon;
355  /* 3 bits reserved */
356  /* number of dependent substreams associated with this substream 4 bits */
357  uint8_t num_dep_sub;
358  /* channel locations of the dependent substream(s), if any, 9 bits */
359  uint16_t chan_loc;
360  /* if there is no dependent substream, then one bit reserved instead */
361  } substream[1]; /* TODO: support 8 independent substreams */
362 };
363 
364 static int mov_write_ac3_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
365 {
366  struct eac3_info *info = track->eac3_priv;
367  PutBitContext pbc;
368  uint8_t buf[3];
369 
370  if (!info || !info->ec3_done) {
371  av_log(s, AV_LOG_ERROR,
372  "Cannot write moov atom before AC3 packets."
373  " Set the delay_moov flag to fix this.\n");
374  return AVERROR(EINVAL);
375  }
376 
377  if (info->substream[0].bsid > 8) {
378  av_log(s, AV_LOG_ERROR,
379  "RealAudio AC-3/DolbyNet with bsid %d is not defined by the "
380  "ISOBMFF specification in ETSI TS 102 366!\n",
381  info->substream[0].bsid);
382  return AVERROR(EINVAL);
383  }
384 
385  if (info->ac3_bit_rate_code < 0) {
386  av_log(s, AV_LOG_ERROR,
387  "No valid AC3 bit rate code for data rate of %d!\n",
388  info->data_rate);
389  return AVERROR(EINVAL);
390  }
391 
392  avio_wb32(pb, 11);
393  ffio_wfourcc(pb, "dac3");
394 
395  init_put_bits(&pbc, buf, sizeof(buf));
396  put_bits(&pbc, 2, info->substream[0].fscod);
397  put_bits(&pbc, 5, info->substream[0].bsid);
398  put_bits(&pbc, 3, info->substream[0].bsmod);
399  put_bits(&pbc, 3, info->substream[0].acmod);
400  put_bits(&pbc, 1, info->substream[0].lfeon);
401  put_bits(&pbc, 5, info->ac3_bit_rate_code); // bit_rate_code
402  put_bits(&pbc, 5, 0); // reserved
403 
404  flush_put_bits(&pbc);
405  avio_write(pb, buf, sizeof(buf));
406 
407  return 11;
408 }
409 
410 static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
411 {
412  AC3HeaderInfo *hdr = NULL;
413  struct eac3_info *info;
414  int num_blocks, ret;
415 
416  if (!track->eac3_priv) {
417  if (!(track->eac3_priv = av_mallocz(sizeof(*info))))
418  return AVERROR(ENOMEM);
419 
420  ((struct eac3_info *)track->eac3_priv)->ac3_bit_rate_code = -1;
421  }
422  info = track->eac3_priv;
423 
424  if (!info->pkt && !(info->pkt = av_packet_alloc()))
425  return AVERROR(ENOMEM);
426 
427  if ((ret = avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size)) < 0) {
428  if (ret == AVERROR(ENOMEM))
429  goto end;
430 
431  /* drop the packets until we see a good one */
432  if (!track->entry) {
433  av_log(mov->fc, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
434  ret = 0;
435  } else
436  ret = AVERROR_INVALIDDATA;
437  goto end;
438  }
439 
440  info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
441  info->ac3_bit_rate_code = FFMAX(info->ac3_bit_rate_code,
442  hdr->ac3_bit_rate_code);
443  num_blocks = hdr->num_blocks;
444 
445  if (!info->ec3_done) {
446  /* AC-3 substream must be the first one */
447  if (hdr->bitstream_id <= 10 && hdr->substreamid != 0) {
448  ret = AVERROR(EINVAL);
449  goto end;
450  }
451 
452  /* this should always be the case, given that our AC-3 parser
453  * concatenates dependent frames to their independent parent */
454  if (hdr->frame_type == EAC3_FRAME_TYPE_INDEPENDENT ||
455  hdr->frame_type == EAC3_FRAME_TYPE_AC3_CONVERT) {
456  /* substream ids must be incremental */
457  if (hdr->substreamid > info->num_ind_sub + 1) {
458  ret = AVERROR(EINVAL);
459  goto end;
460  }
461 
462  if (hdr->substreamid == info->num_ind_sub + 1) {
463  //info->num_ind_sub++;
464  avpriv_request_sample(mov->fc, "Multiple independent substreams");
465  ret = AVERROR_PATCHWELCOME;
466  goto end;
467  } else if (hdr->substreamid < info->num_ind_sub ||
468  hdr->substreamid == 0 && info->substream[0].bsid) {
469  info->ec3_done = 1;
470  goto concatenate;
471  }
472  } else {
473  if (hdr->substreamid != 0) {
474  avpriv_request_sample(mov->fc, "Multiple non EAC3 independent substreams");
475  ret = AVERROR_PATCHWELCOME;
476  goto end;
477  }
478  }
479 
480  /* fill the info needed for the "dec3" atom */
481  info->substream[hdr->substreamid].fscod = hdr->sr_code;
482  info->substream[hdr->substreamid].bsid = hdr->bitstream_id;
483  info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
484  info->substream[hdr->substreamid].acmod = hdr->channel_mode;
485  info->substream[hdr->substreamid].lfeon = hdr->lfe_on;
486 
487  if (track->par->codec_id == AV_CODEC_ID_AC3) {
488  // with AC-3 we only require the information of a single packet,
489  // so we can finish as soon as the basic values of the bit stream
490  // have been set to the track's informational structure.
491  info->ec3_done = 1;
492  goto concatenate;
493  }
494 
495  /* Parse dependent substream(s), if any */
496  if (pkt->size != hdr->frame_size) {
497  int cumul_size = hdr->frame_size;
498  int parent = hdr->substreamid;
499 
500  while (cumul_size != pkt->size) {
501  GetBitContext gbc;
502  int i;
503  ret = avpriv_ac3_parse_header(&hdr, pkt->data + cumul_size, pkt->size - cumul_size);
504  if (ret < 0)
505  goto end;
506  if (hdr->frame_type != EAC3_FRAME_TYPE_DEPENDENT) {
507  ret = AVERROR(EINVAL);
508  goto end;
509  }
510  info->substream[parent].num_dep_sub++;
511  ret /= 8;
512 
513  /* header is parsed up to lfeon, but custom channel map may be needed */
514  init_get_bits8(&gbc, pkt->data + cumul_size + ret, pkt->size - cumul_size - ret);
515  /* skip bsid */
516  skip_bits(&gbc, 5);
517  /* skip volume control params */
518  for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
519  skip_bits(&gbc, 5); // skip dialog normalization
520  if (get_bits1(&gbc)) {
521  skip_bits(&gbc, 8); // skip compression gain word
522  }
523  }
524  /* get the dependent stream channel map, if exists */
525  if (get_bits1(&gbc))
526  info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
527  else
528  info->substream[parent].chan_loc |= hdr->channel_mode;
529  cumul_size += hdr->frame_size;
530  }
531  }
532  }
533 
534 concatenate:
535  if (!info->num_blocks && num_blocks == 6) {
536  ret = pkt->size;
537  goto end;
538  }
539  else if (info->num_blocks + num_blocks > 6) {
540  ret = AVERROR_INVALIDDATA;
541  goto end;
542  }
543 
544  if (!info->num_blocks) {
545  ret = av_packet_ref(info->pkt, pkt);
546  if (!ret)
547  info->num_blocks = num_blocks;
548  goto end;
549  } else {
550  if ((ret = av_grow_packet(info->pkt, pkt->size)) < 0)
551  goto end;
552  memcpy(info->pkt->data + info->pkt->size - pkt->size, pkt->data, pkt->size);
553  info->num_blocks += num_blocks;
554  info->pkt->duration += pkt->duration;
555  if (info->num_blocks != 6)
556  goto end;
557  av_packet_unref(pkt);
558  av_packet_move_ref(pkt, info->pkt);
559  info->num_blocks = 0;
560  }
561  ret = pkt->size;
562 
563 end:
564  av_free(hdr);
565 
566  return ret;
567 }
568 
569 static int mov_write_eac3_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
570 {
571  PutBitContext pbc;
572  uint8_t *buf;
573  struct eac3_info *info;
574  int size, i;
575 
576  if (!track->eac3_priv) {
577  av_log(s, AV_LOG_ERROR,
578  "Cannot write moov atom before EAC3 packets parsed.\n");
579  return AVERROR(EINVAL);
580  }
581 
582  info = track->eac3_priv;
583  size = 2 + ((34 * (info->num_ind_sub + 1) + 7) >> 3);
584  buf = av_malloc(size);
585  if (!buf) {
586  return AVERROR(ENOMEM);
587  }
588 
589  init_put_bits(&pbc, buf, size);
590  put_bits(&pbc, 13, info->data_rate);
591  put_bits(&pbc, 3, info->num_ind_sub);
592  for (i = 0; i <= info->num_ind_sub; i++) {
593  put_bits(&pbc, 2, info->substream[i].fscod);
594  put_bits(&pbc, 5, info->substream[i].bsid);
595  put_bits(&pbc, 1, 0); /* reserved */
596  put_bits(&pbc, 1, 0); /* asvc */
597  put_bits(&pbc, 3, info->substream[i].bsmod);
598  put_bits(&pbc, 3, info->substream[i].acmod);
599  put_bits(&pbc, 1, info->substream[i].lfeon);
600  put_bits(&pbc, 5, 0); /* reserved */
601  put_bits(&pbc, 4, info->substream[i].num_dep_sub);
602  if (!info->substream[i].num_dep_sub) {
603  put_bits(&pbc, 1, 0); /* reserved */
604  } else {
605  put_bits(&pbc, 9, info->substream[i].chan_loc);
606  }
607  }
608  flush_put_bits(&pbc);
609  size = put_bytes_output(&pbc);
610 
611  avio_wb32(pb, size + 8);
612  ffio_wfourcc(pb, "dec3");
613  avio_write(pb, buf, size);
614 
615  av_free(buf);
616 
617  return size;
618 }
619 
620 /**
621  * This function writes extradata "as is".
622  * Extradata must be formatted like a valid atom (with size and tag).
623  */
624 static int mov_write_extradata_tag(AVIOContext *pb, MOVTrack *track)
625 {
626  avio_write(pb, track->par->extradata, track->par->extradata_size);
627  return track->par->extradata_size;
628 }
629 
630 static int mov_write_enda_tag(AVIOContext *pb)
631 {
632  avio_wb32(pb, 10);
633  ffio_wfourcc(pb, "enda");
634  avio_wb16(pb, 1); /* little endian */
635  return 10;
636 }
637 
638 static int mov_write_enda_tag_be(AVIOContext *pb)
639 {
640  avio_wb32(pb, 10);
641  ffio_wfourcc(pb, "enda");
642  avio_wb16(pb, 0); /* big endian */
643  return 10;
644 }
645 
646 static void put_descr(AVIOContext *pb, int tag, unsigned int size)
647 {
648  int i = 3;
649  avio_w8(pb, tag);
650  for (; i > 0; i--)
651  avio_w8(pb, (size >> (7 * i)) | 0x80);
652  avio_w8(pb, size & 0x7F);
653 }
654 
655 static unsigned compute_avg_bitrate(MOVTrack *track)
656 {
657  uint64_t size = 0;
658  int i;
659  if (!track->track_duration)
660  return 0;
661  for (i = 0; i < track->entry; i++)
662  size += track->cluster[i].size;
663  return size * 8 * track->timescale / track->track_duration;
664 }
665 
666 struct mpeg4_bit_rate_values {
667  uint32_t buffer_size; ///< Size of the decoding buffer for the elementary stream in bytes.
668  uint32_t max_bit_rate; ///< Maximum rate in bits/second over any window of one second.
669  uint32_t avg_bit_rate; ///< Average rate in bits/second over the entire presentation.
670 };
671 
672 static struct mpeg4_bit_rate_values calculate_mpeg4_bit_rates(MOVTrack *track)
673 {
674  AVCPBProperties *props = track->st ?
675  (AVCPBProperties*)av_stream_get_side_data(track->st,
676  AV_PKT_DATA_CPB_PROPERTIES,
677  NULL) :
678  NULL;
679  struct mpeg4_bit_rate_values bit_rates = { 0 };
680 
681  bit_rates.avg_bit_rate = compute_avg_bitrate(track);
682  if (!bit_rates.avg_bit_rate) {
683  // if the average bit rate cannot be calculated at this point, such as
684  // in the case of fragmented MP4, utilize the following values as
685  // fall-back in priority order:
686  //
687  // 1. average bit rate property
688  // 2. bit rate (usually average over the whole clip)
689  // 3. maximum bit rate property
690 
691  if (props && props->avg_bitrate) {
692  bit_rates.avg_bit_rate = props->avg_bitrate;
693  } else if (track->par->bit_rate) {
694  bit_rates.avg_bit_rate = track->par->bit_rate;
695  } else if (props && props->max_bitrate) {
696  bit_rates.avg_bit_rate = props->max_bitrate;
697  }
698  }
699 
700  // (FIXME should be max rate in any 1 sec window)
701  bit_rates.max_bit_rate = FFMAX(track->par->bit_rate,
702  bit_rates.avg_bit_rate);
703 
704  // utilize values from properties if we have them available
705  if (props) {
706  bit_rates.max_bit_rate = FFMAX(bit_rates.max_bit_rate,
707  props->max_bitrate);
708  bit_rates.buffer_size = props->buffer_size / 8;
709  }
710 
711  return bit_rates;
712 }
713 
714 static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
715 {
716  struct mpeg4_bit_rate_values bit_rates = calculate_mpeg4_bit_rates(track);
717  int64_t pos = avio_tell(pb);
718  int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
719 
720  avio_wb32(pb, 0); // size
721  ffio_wfourcc(pb, "esds");
722  avio_wb32(pb, 0); // Version
723 
724  // ES descriptor
725  put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
726  avio_wb16(pb, track->track_id);
727  avio_w8(pb, 0x00); // flags (= no flags)
728 
729  // DecoderConfig descriptor
730  put_descr(pb, 0x04, 13 + decoder_specific_info_len);
731 
732  // Object type indication
733  if ((track->par->codec_id == AV_CODEC_ID_MP2 ||
734  track->par->codec_id == AV_CODEC_ID_MP3) &&
735  track->par->sample_rate > 24000)
736  avio_w8(pb, 0x6B); // 11172-3
737  else
738  avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->par->codec_id));
739 
740  // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
741  // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
742  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
743  avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
744  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
745  avio_w8(pb, 0x15); // flags (= Audiostream)
746  else
747  avio_w8(pb, 0x11); // flags (= Visualstream)
748 
749  avio_wb24(pb, bit_rates.buffer_size); // Buffersize DB
750  avio_wb32(pb, bit_rates.max_bit_rate); // maxbitrate
751  avio_wb32(pb, bit_rates.avg_bit_rate);
752 
753  if (track->vos_len) {
754  // DecoderSpecific info descriptor
755  put_descr(pb, 0x05, track->vos_len);
756  avio_write(pb, track->vos_data, track->vos_len);
757  }
758 
759  // SL descriptor
760  put_descr(pb, 0x06, 1);
761  avio_w8(pb, 0x02);
762  return update_size(pb, pos);
763 }
764 
765 static int mov_pcm_le_gt16(enum AVCodecID codec_id)
766 {
767  return codec_id == AV_CODEC_ID_PCM_S24LE ||
768  codec_id == AV_CODEC_ID_PCM_S32LE ||
769  codec_id == AV_CODEC_ID_PCM_F32LE ||
770  codec_id == AV_CODEC_ID_PCM_F64LE;
771 }
772 
773 static int mov_pcm_be_gt16(enum AVCodecID codec_id)
774 {
775  return codec_id == AV_CODEC_ID_PCM_S24BE ||
776  codec_id == AV_CODEC_ID_PCM_S32BE ||
777  codec_id == AV_CODEC_ID_PCM_F32BE ||
778  codec_id == AV_CODEC_ID_PCM_F64BE;
779 }
780 
781 static int mov_write_ms_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
782 {
783  int ret;
784  int64_t pos = avio_tell(pb);
785  avio_wb32(pb, 0);
786  avio_wl32(pb, track->tag); // store it byteswapped
787  track->par->codec_tag = av_bswap16(track->tag >> 16);
788  if ((ret = ff_put_wav_header(s, pb, track->par, 0)) < 0)
789  return ret;
790  return update_size(pb, pos);
791 }
792 
793 static int mov_write_wfex_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
794 {
795  int ret;
796  int64_t pos = avio_tell(pb);
797  avio_wb32(pb, 0);
798  ffio_wfourcc(pb, "wfex");
799  if ((ret = ff_put_wav_header(s, pb, track->st->codecpar, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX)) < 0)
800  return ret;
801  return update_size(pb, pos);
802 }
803 
804 static int mov_write_dfla_tag(AVIOContext *pb, MOVTrack *track)
805 {
806  int64_t pos = avio_tell(pb);
807  avio_wb32(pb, 0);
808  ffio_wfourcc(pb, "dfLa");
809  avio_w8(pb, 0); /* version */
810  avio_wb24(pb, 0); /* flags */
811 
812  /* Expect the encoder to pass a METADATA_BLOCK_TYPE_STREAMINFO. */
813  if (track->par->extradata_size != FLAC_STREAMINFO_SIZE)
814  return AVERROR_INVALIDDATA;
815 
816  /* TODO: Write other METADATA_BLOCK_TYPEs if the encoder makes them available. */
817  avio_w8(pb, 1 << 7 | FLAC_METADATA_TYPE_STREAMINFO); /* LastMetadataBlockFlag << 7 | BlockType */
818  avio_wb24(pb, track->par->extradata_size); /* Length */
819  avio_write(pb, track->par->extradata, track->par->extradata_size); /* BlockData[Length] */
820 
821  return update_size(pb, pos);
822 }
823 
824 static int mov_write_dops_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
825 {
826  int64_t pos = avio_tell(pb);
827  int channels, channel_map;
828  avio_wb32(pb, 0);
829  ffio_wfourcc(pb, "dOps");
830  avio_w8(pb, 0); /* Version */
831  if (track->par->extradata_size < 19) {
832  av_log(s, AV_LOG_ERROR, "invalid extradata size\n");
833  return AVERROR_INVALIDDATA;
834  }
835  /* extradata contains an Ogg OpusHead, other than byte-ordering and
836  OpusHead's preceeding magic/version, OpusSpecificBox is currently
837  identical. */
838  channels = AV_RB8(track->par->extradata + 9);
839  channel_map = AV_RB8(track->par->extradata + 18);
840 
841  avio_w8(pb, channels); /* OuputChannelCount */
842  avio_wb16(pb, AV_RL16(track->par->extradata + 10)); /* PreSkip */
843  avio_wb32(pb, AV_RL32(track->par->extradata + 12)); /* InputSampleRate */
844  avio_wb16(pb, AV_RL16(track->par->extradata + 16)); /* OutputGain */
845  avio_w8(pb, channel_map); /* ChannelMappingFamily */
846  /* Write the rest of the header out without byte-swapping. */
847  if (channel_map) {
848  if (track->par->extradata_size < 21 + channels) {
849  av_log(s, AV_LOG_ERROR, "invalid extradata size\n");
850  return AVERROR_INVALIDDATA;
851  }
852  avio_write(pb, track->par->extradata + 19, 2 + channels); /* ChannelMappingTable */
853  }
854 
855  return update_size(pb, pos);
856 }
857 
858 static int mov_write_dmlp_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
859 {
860  int64_t pos = avio_tell(pb);
861  int length;
862  avio_wb32(pb, 0);
863  ffio_wfourcc(pb, "dmlp");
864 
865  if (track->vos_len < 20) {
866  av_log(s, AV_LOG_ERROR,
867  "Cannot write moov atom before TrueHD packets."
868  " Set the delay_moov flag to fix this.\n");
869  return AVERROR(EINVAL);
870  }
871 
872  length = (AV_RB16(track->vos_data) & 0xFFF) * 2;
873  if (length < 20 || length > track->vos_len)
874  return AVERROR_INVALIDDATA;
875 
876  // Only TrueHD is supported
877  if (AV_RB32(track->vos_data + 4) != 0xF8726FBA)
878  return AVERROR_INVALIDDATA;
879 
880  avio_wb32(pb, AV_RB32(track->vos_data + 8)); /* format_info */
881  avio_wb16(pb, AV_RB16(track->vos_data + 18) << 1); /* peak_data_rate */
882  avio_wb32(pb, 0); /* reserved */
883 
884  return update_size(pb, pos);
885 }
886 
887 static int mov_write_chan_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
888 {
889  uint32_t layout_tag, bitmap, *channel_desc;
890  int64_t pos = avio_tell(pb);
891  int num_desc, ret;
892 
893  if (track->multichannel_as_mono)
894  return 0;
895 
896  ret = ff_mov_get_channel_layout_tag(track->par, &layout_tag,
897  &bitmap, &channel_desc);
898 
899  if (ret < 0) {
900  if (ret == AVERROR(ENOSYS)) {
901  av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "
902  "lack of channel information\n");
903  ret = 0;
904  }
905 
906  return ret;
907  }
908 
909  if (layout_tag == MOV_CH_LAYOUT_MONO && track->mono_as_fc > 0) {
910  av_assert0(!channel_desc);
911  channel_desc = av_malloc(sizeof(*channel_desc));
912  if (!channel_desc)
913  return AVERROR(ENOMEM);
914 
915  layout_tag = 0;
916  bitmap = 0;
917  *channel_desc = 3; // channel label "Center"
918  }
919 
920  num_desc = layout_tag ? 0 : track->par->ch_layout.nb_channels;
921 
922  avio_wb32(pb, 0); // Size
923  ffio_wfourcc(pb, "chan"); // Type
924  avio_w8(pb, 0); // Version
925  avio_wb24(pb, 0); // Flags
926  avio_wb32(pb, layout_tag); // mChannelLayoutTag
927  avio_wb32(pb, bitmap); // mChannelBitmap
928  avio_wb32(pb, num_desc); // mNumberChannelDescriptions
929 
930  for (int i = 0; i < num_desc; i++) {
931  avio_wb32(pb, channel_desc[i]); // mChannelLabel
932  avio_wb32(pb, 0); // mChannelFlags
933  avio_wl32(pb, 0); // mCoordinates[0]
934  avio_wl32(pb, 0); // mCoordinates[1]
935  avio_wl32(pb, 0); // mCoordinates[2]
936  }
937 
938  av_free(channel_desc);
939 
940  return update_size(pb, pos);
941 }
942 
943 static int mov_write_wave_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
944 {
945  int64_t pos = avio_tell(pb);
946 
947  avio_wb32(pb, 0); /* size */
948  ffio_wfourcc(pb, "wave");
949 
950  if (track->par->codec_id != AV_CODEC_ID_QDM2) {
951  avio_wb32(pb, 12); /* size */
952  ffio_wfourcc(pb, "frma");
953  avio_wl32(pb, track->tag);
954  }
955 
956  if (track->par->codec_id == AV_CODEC_ID_AAC) {
957  /* useless atom needed by mplayer, ipod, not needed by quicktime */
958  avio_wb32(pb, 12); /* size */
959  ffio_wfourcc(pb, "mp4a");
960  avio_wb32(pb, 0);
961  mov_write_esds_tag(pb, track);
962  } else if (mov_pcm_le_gt16(track->par->codec_id)) {
963  mov_write_enda_tag(pb);
964  } else if (mov_pcm_be_gt16(track->par->codec_id)) {
965  mov_write_enda_tag_be(pb);
966  } else if (track->par->codec_id == AV_CODEC_ID_AMR_NB) {
967  mov_write_amr_tag(pb, track);
968  } else if (track->par->codec_id == AV_CODEC_ID_AC3) {
969  mov_write_ac3_tag(s, pb, track);
970  } else if (track->par->codec_id == AV_CODEC_ID_EAC3) {
971  mov_write_eac3_tag(s, pb, track);
972  } else if (track->par->codec_id == AV_CODEC_ID_ALAC ||
973  track->par->codec_id == AV_CODEC_ID_QDM2) {
974  mov_write_extradata_tag(pb, track);
975  } else if (track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
976  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
977  mov_write_ms_tag(s, pb, track);
978  }
979 
980  avio_wb32(pb, 8); /* size */
981  avio_wb32(pb, 0); /* null tag */
982 
983  return update_size(pb, pos);
984 }
985 
986 static int mov_write_dvc1_structs(MOVTrack *track, uint8_t *buf)
987 {
988  uint8_t *unescaped;
989  const uint8_t *start, *next, *end = track->vos_data + track->vos_len;
990  int unescaped_size, seq_found = 0;
991  int level = 0, interlace = 0;
992  int packet_seq = track->vc1_info.packet_seq;
993  int packet_entry = track->vc1_info.packet_entry;
994  int slices = track->vc1_info.slices;
995  PutBitContext pbc;
996 
997  if (track->start_dts == AV_NOPTS_VALUE) {
998  /* No packets written yet, vc1_info isn't authoritative yet. */
999  /* Assume inline sequence and entry headers. */
1000  packet_seq = packet_entry = 1;
1001  av_log(NULL, AV_LOG_WARNING,
1002  "moov atom written before any packets, unable to write correct "
1003  "dvc1 atom. Set the delay_moov flag to fix this.\n");
1004  }
1005 
1006  unescaped = av_mallocz(track->vos_len + AV_INPUT_BUFFER_PADDING_SIZE);
1007  if (!unescaped)
1008  return AVERROR(ENOMEM);
1009  start = find_next_marker(track->vos_data, end);
1010  for (next = start; next < end; start = next) {
1011  GetBitContext gb;
1012  int size;
1013  next = find_next_marker(start + 4, end);
1014  size = next - start - 4;
1015  if (size <= 0)
1016  continue;
1017  unescaped_size = vc1_unescape_buffer(start + 4, size, unescaped);
1018  init_get_bits(&gb, unescaped, 8 * unescaped_size);
1019  if (AV_RB32(start) == VC1_CODE_SEQHDR) {
1020  int profile = get_bits(&gb, 2);
1021  if (profile != PROFILE_ADVANCED) {
1022  av_free(unescaped);
1023  return AVERROR(ENOSYS);
1024  }
1025  seq_found = 1;
1026  level = get_bits(&gb, 3);
1027  /* chromaformat, frmrtq_postproc, bitrtq_postproc, postprocflag,
1028  * width, height */
1029  skip_bits_long(&gb, 2 + 3 + 5 + 1 + 2*12);
1030  skip_bits(&gb, 1); /* broadcast */
1031  interlace = get_bits1(&gb);
1032  skip_bits(&gb, 4); /* tfcntrflag, finterpflag, reserved, psf */
1033  }
1034  }
1035  if (!seq_found) {
1036  av_free(unescaped);
1037  return AVERROR(ENOSYS);
1038  }
1039 
1040  init_put_bits(&pbc, buf, 7);
1041  /* VC1DecSpecStruc */
1042  put_bits(&pbc, 4, 12); /* profile - advanced */
1043  put_bits(&pbc, 3, level);
1044  put_bits(&pbc, 1, 0); /* reserved */
1045  /* VC1AdvDecSpecStruc */
1046  put_bits(&pbc, 3, level);
1047  put_bits(&pbc, 1, 0); /* cbr */
1048  put_bits(&pbc, 6, 0); /* reserved */
1049  put_bits(&pbc, 1, !interlace); /* no interlace */
1050  put_bits(&pbc, 1, !packet_seq); /* no multiple seq */
1051  put_bits(&pbc, 1, !packet_entry); /* no multiple entry */
1052  put_bits(&pbc, 1, !slices); /* no slice code */
1053  put_bits(&pbc, 1, 0); /* no bframe */
1054  put_bits(&pbc, 1, 0); /* reserved */
1055 
1056  /* framerate */
1057  if (track->st->avg_frame_rate.num > 0 && track->st->avg_frame_rate.den > 0)
1058  put_bits32(&pbc, track->st->avg_frame_rate.num / track->st->avg_frame_rate.den);
1059  else
1060  put_bits32(&pbc, 0xffffffff);
1061 
1062  flush_put_bits(&pbc);
1063 
1064  av_free(unescaped);
1065 
1066  return 0;
1067 }
1068 
1069 static int mov_write_dvc1_tag(AVIOContext *pb, MOVTrack *track)
1070 {
1071  uint8_t buf[7] = { 0 };
1072  int ret;
1073 
1074  if ((ret = mov_write_dvc1_structs(track, buf)) < 0)
1075  return ret;
1076 
1077  avio_wb32(pb, track->vos_len + 8 + sizeof(buf));
1078  ffio_wfourcc(pb, "dvc1");
1079  avio_write(pb, buf, sizeof(buf));
1080  avio_write(pb, track->vos_data, track->vos_len);
1081 
1082  return 0;
1083 }
1084 
1085 static int mov_write_glbl_tag(AVIOContext *pb, MOVTrack *track)
1086 {
1087  avio_wb32(pb, track->vos_len + 8);
1088  ffio_wfourcc(pb, "glbl");
1089  avio_write(pb, track->vos_data, track->vos_len);
1090  return 8 + track->vos_len;
1091 }
1092 
1093 /**
1094  * Compute flags for 'lpcm' tag.
1095  * See CoreAudioTypes and AudioStreamBasicDescription at Apple.
1096  */
1097 static int mov_get_lpcm_flags(enum AVCodecID codec_id)
1098 {
1099  switch (codec_id) {
1100  case AV_CODEC_ID_PCM_F32BE:
1101  case AV_CODEC_ID_PCM_F64BE:
1102  return 11;
1103  case AV_CODEC_ID_PCM_F32LE:
1104  case AV_CODEC_ID_PCM_F64LE:
1105  return 9;
1106  case AV_CODEC_ID_PCM_U8:
1107  return 10;
1108  case AV_CODEC_ID_PCM_S16BE:
1109  case AV_CODEC_ID_PCM_S24BE:
1110  case AV_CODEC_ID_PCM_S32BE:
1111  return 14;
1112  case AV_CODEC_ID_PCM_S8:
1113  case AV_CODEC_ID_PCM_S16LE:
1114  case AV_CODEC_ID_PCM_S24LE:
1115  case AV_CODEC_ID_PCM_S32LE:
1116  return 12;
1117  default:
1118  return 0;
1119  }
1120 }
1121 
1122 static int get_cluster_duration(MOVTrack *track, int cluster_idx)
1123 {
1124  int64_t next_dts;
1125 
1126  if (cluster_idx >= track->entry)
1127  return 0;
1128 
1129  if (cluster_idx + 1 == track->entry)
1130  next_dts = track->track_duration + track->start_dts;
1131  else
1132  next_dts = track->cluster[cluster_idx + 1].dts;
1133 
1134  next_dts -= track->cluster[cluster_idx].dts;
1135 
1136  av_assert0(next_dts >= 0);
1137  av_assert0(next_dts <= INT_MAX);
1138 
1139  return next_dts;
1140 }
1141 
1142 static int get_samples_per_packet(MOVTrack *track)
1143 {
1144  int i, first_duration;
1145 
1146 // return track->par->frame_size;
1147 
1148  /* use 1 for raw PCM */
1149  if (!track->audio_vbr)
1150  return 1;
1151 
1152  /* check to see if duration is constant for all clusters */
1153  if (!track->entry)
1154  return 0;
1155  first_duration = get_cluster_duration(track, 0);
1156  for (i = 1; i < track->entry; i++) {
1157  if (get_cluster_duration(track, i) != first_duration)
1158  return 0;
1159  }
1160  return first_duration;
1161 }
1162 
1163 static int mov_write_btrt_tag(AVIOContext *pb, MOVTrack *track)
1164 {
1165  int64_t pos = avio_tell(pb);
1166  struct mpeg4_bit_rate_values bit_rates = calculate_mpeg4_bit_rates(track);
1167  if (!bit_rates.max_bit_rate && !bit_rates.avg_bit_rate &&
1168  !bit_rates.buffer_size)
1169  // no useful data to be written, skip
1170  return 0;
1171 
1172  avio_wb32(pb, 0); /* size */
1173  ffio_wfourcc(pb, "btrt");
1174 
1175  avio_wb32(pb, bit_rates.buffer_size);
1176  avio_wb32(pb, bit_rates.max_bit_rate);
1177  avio_wb32(pb, bit_rates.avg_bit_rate);
1178 
1179  return update_size(pb, pos);
1180 }
1181 
1182 static int mov_write_chnl_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1183 {
1184  int64_t pos = avio_tell(pb);
1185  int config = 0;
1186  int ret;
1187  uint8_t *speaker_pos = NULL;
1188  const AVChannelLayout *layout = &track->par->ch_layout;
1189 
1190  ret = ff_mov_get_channel_config_from_layout(layout, &config);
1191  if (ret || !config) {
1192  config = 0;
1193  speaker_pos = av_malloc(layout->nb_channels);
1194  ret = ff_mov_get_channel_positions_from_layout(layout,
1195  speaker_pos, layout->nb_channels);
1196  if (ret) {
1197  char buf[128] = {0};
1198 
1199  av_freep(&speaker_pos);
1200  av_channel_layout_describe(layout, buf, sizeof(buf));
1201  av_log(s, AV_LOG_ERROR, "unsupported channel layout %s\n", buf);
1202  return ret;
1203  }
1204  }
1205 
1206  avio_wb32(pb, 0); /* size */
1207  ffio_wfourcc(pb, "chnl");
1208  avio_wb32(pb, 0); /* version & flags */
1209 
1210  avio_w8(pb, 1); /* stream_structure */
1211  avio_w8(pb, config);
1212  if (config) {
1213  avio_wb64(pb, 0);
1214  } else {
1215  for (int i = 0; i < layout->nb_channels; i++)
1216  avio_w8(pb, speaker_pos[i]);
1217  av_freep(&speaker_pos);
1218  }
1219 
1220  return update_size(pb, pos);
1221 }
1222 
1223 static int mov_write_pcmc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1224 {
1225  int64_t pos = avio_tell(pb);
1226  int format_flags;
1227 
1228  avio_wb32(pb, 0); /* size */
1229  ffio_wfourcc(pb, "pcmC");
1230  avio_wb32(pb, 0); /* version & flags */
1231 
1232  /* 0x01: indicates little-endian format */
1233  format_flags = (track->par->codec_id == AV_CODEC_ID_PCM_F32LE ||
1234  track->par->codec_id == AV_CODEC_ID_PCM_F64LE ||
1235  track->par->codec_id == AV_CODEC_ID_PCM_S16LE ||
1236  track->par->codec_id == AV_CODEC_ID_PCM_S24LE ||
1237  track->par->codec_id == AV_CODEC_ID_PCM_S32LE);
1238  avio_w8(pb, format_flags);
1239  avio_w8(pb, track->par->bits_per_raw_sample);
1240 
1241  return update_size(pb, pos);
1242 }
1243 
1244 static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
1245 {
1246  int64_t pos = avio_tell(pb);
1247  int version = 0;
1248  uint32_t tag = track->tag;
1249  int ret = 0;
1250 
1251  if (track->mode == MODE_MOV) {
1252  if (track->timescale > UINT16_MAX || !track->par->ch_layout.nb_channels) {
1253  if (mov_get_lpcm_flags(track->par->codec_id))
1254  tag = AV_RL32("lpcm");
1255  version = 2;
1256  } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||
1257  mov_pcm_be_gt16(track->par->codec_id) ||
1258  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1259  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1260  track->par->codec_id == AV_CODEC_ID_QDM2) {
1261  version = 1;
1262  }
1263  }
1264 
1265  avio_wb32(pb, 0); /* size */
1266  if (mov->encryption_scheme != MOV_ENC_NONE) {
1267  ffio_wfourcc(pb, "enca");
1268  } else {
1269  avio_wl32(pb, tag); // store it byteswapped
1270  }
1271  avio_wb32(pb, 0); /* Reserved */
1272  avio_wb16(pb, 0); /* Reserved */
1273  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
1274 
1275  /* SoundDescription */
1276  avio_wb16(pb, version); /* Version */
1277  avio_wb16(pb, 0); /* Revision level */
1278  avio_wb32(pb, 0); /* Reserved */
1279 
1280  if (version == 2) {
1281  avio_wb16(pb, 3);
1282  avio_wb16(pb, 16);
1283  avio_wb16(pb, 0xfffe);
1284  avio_wb16(pb, 0);
1285  avio_wb32(pb, 0x00010000);
1286  avio_wb32(pb, 72);
1287  avio_wb64(pb, av_double2int(track->par->sample_rate));
1288  avio_wb32(pb, track->par->ch_layout.nb_channels);
1289  avio_wb32(pb, 0x7F000000);
1290  avio_wb32(pb, av_get_bits_per_sample(track->par->codec_id));
1291  avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
1292  avio_wb32(pb, track->sample_size);
1293  avio_wb32(pb, get_samples_per_packet(track));
1294  } else {
1295  if (track->mode == MODE_MOV) {
1296  avio_wb16(pb, track->par->ch_layout.nb_channels);
1297  if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
1298  track->par->codec_id == AV_CODEC_ID_PCM_S8)
1299  avio_wb16(pb, 8); /* bits per sample */
1300  else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
1301  avio_wb16(pb, track->par->bits_per_coded_sample);
1302  else
1303  avio_wb16(pb, 16);
1304  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
1305  } else { /* reserved for mp4/3gp */
1306  avio_wb16(pb, track->par->ch_layout.nb_channels);
1307  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1308  track->par->codec_id == AV_CODEC_ID_ALAC) {
1309  avio_wb16(pb, track->par->bits_per_raw_sample);
1310  } else {
1311  avio_wb16(pb, 16);
1312  }
1313  avio_wb16(pb, 0);
1314  }
1315 
1316  avio_wb16(pb, 0); /* packet size (= 0) */
1317  if (track->par->codec_id == AV_CODEC_ID_OPUS)
1318  avio_wb16(pb, 48000);
1319  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1320  avio_wb32(pb, track->par->sample_rate);
1321  else
1322  avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
1323  track->par->sample_rate : 0);
1324 
1325  if (track->par->codec_id != AV_CODEC_ID_TRUEHD)
1326  avio_wb16(pb, 0); /* Reserved */
1327  }
1328 
1329  if (version == 1) { /* SoundDescription V1 extended info */
1330  if (mov_pcm_le_gt16(track->par->codec_id) ||
1331  mov_pcm_be_gt16(track->par->codec_id))
1332  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
1333  else
1334  avio_wb32(pb, track->par->frame_size); /* Samples per packet */
1335  avio_wb32(pb, track->sample_size / track->par->ch_layout.nb_channels); /* Bytes per packet */
1336  avio_wb32(pb, track->sample_size); /* Bytes per frame */
1337  avio_wb32(pb, 2); /* Bytes per sample */
1338  }
1339 
1340  if (track->mode == MODE_MOV &&
1341  (track->par->codec_id == AV_CODEC_ID_AAC ||
1342  track->par->codec_id == AV_CODEC_ID_AC3 ||
1343  track->par->codec_id == AV_CODEC_ID_EAC3 ||
1344  track->par->codec_id == AV_CODEC_ID_AMR_NB ||
1345  track->par->codec_id == AV_CODEC_ID_ALAC ||
1346  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1347  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1348  track->par->codec_id == AV_CODEC_ID_QDM2 ||
1349  (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||
1350  (mov_pcm_be_gt16(track->par->codec_id) && version==1)))
1351  ret = mov_write_wave_tag(s, pb, track);
1352  else if (track->tag == MKTAG('m','p','4','a'))
1353  ret = mov_write_esds_tag(pb, track);
1354  else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)
1355  ret = mov_write_amr_tag(pb, track);
1356  else if (track->par->codec_id == AV_CODEC_ID_AC3)
1357  ret = mov_write_ac3_tag(s, pb, track);
1358  else if (track->par->codec_id == AV_CODEC_ID_EAC3)
1359  ret = mov_write_eac3_tag(s, pb, track);
1360  else if (track->par->codec_id == AV_CODEC_ID_ALAC)
1361  ret = mov_write_extradata_tag(pb, track);
1362  else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)
1363  ret = mov_write_wfex_tag(s, pb, track);
1364  else if (track->par->codec_id == AV_CODEC_ID_FLAC)
1365  ret = mov_write_dfla_tag(pb, track);
1366  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1367  ret = mov_write_dops_tag(s, pb, track);
1368  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1369  ret = mov_write_dmlp_tag(s, pb, track);
1370  else if (tag == MOV_MP4_IPCM_TAG || tag == MOV_MP4_FPCM_TAG) {
1371  if (track->par->ch_layout.nb_channels > 1)
1372  ret = mov_write_chnl_tag(s, pb, track);
1373  if (ret < 0)
1374  return ret;
1375  ret = mov_write_pcmc_tag(s, pb, track);
1376  } else if (track->vos_len > 0)
1377  ret = mov_write_glbl_tag(pb, track);
1378 
1379  if (ret < 0)
1380  return ret;
1381 
1382  if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO
1383  && ((ret = mov_write_chan_tag(s, pb, track)) < 0)) {
1384  return ret;
1385  }
1386 
1387  if (mov->encryption_scheme != MOV_ENC_NONE
1388  && ((ret = ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid)) < 0)) {
1389  return ret;
1390  }
1391 
1392  if (mov->write_btrt &&
1393  ((ret = mov_write_btrt_tag(pb, track)) < 0))
1394  return ret;
1395 
1396  ret = update_size(pb, pos);
1397  return ret;
1398 }
1399 
1400 static int mov_write_d263_tag(AVIOContext *pb)
1401 {
1402  avio_wb32(pb, 0xf); /* size */
1403  ffio_wfourcc(pb, "d263");
1404  ffio_wfourcc(pb, "FFMP");
1405  avio_w8(pb, 0); /* decoder version */
1406  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1407  avio_w8(pb, 0xa); /* level */
1408  avio_w8(pb, 0); /* profile */
1409  return 0xf;
1410 }
1411 
1412 static int mov_write_av1c_tag(AVIOContext *pb, MOVTrack *track)
1413 {
1414  int64_t pos = avio_tell(pb);
1415 
1416  avio_wb32(pb, 0);
1417  ffio_wfourcc(pb, "av1C");
1418  ff_isom_write_av1c(pb, track->vos_data, track->vos_len, track->mode != MODE_AVIF);
1419  return update_size(pb, pos);
1420 }
1421 
1422 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1423 {
1424  int64_t pos = avio_tell(pb);
1425 
1426  avio_wb32(pb, 0);
1427  ffio_wfourcc(pb, "avcC");
1428  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1429  return update_size(pb, pos);
1430 }
1431 
1432 static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1433 {
1434  int64_t pos = avio_tell(pb);
1435 
1436  avio_wb32(pb, 0);
1437  ffio_wfourcc(pb, "vpcC");
1438  avio_w8(pb, 1); /* version */
1439  avio_wb24(pb, 0); /* flags */
1440  ff_isom_write_vpcc(s, pb, track->vos_data, track->vos_len, track->par);
1441 
1442  return update_size(pb, pos);
1443 }
1444 
1445 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1446 {
1447  int64_t pos = avio_tell(pb);
1448 
1449  avio_wb32(pb, 0);
1450  ffio_wfourcc(pb, "hvcC");
1451  if (track->tag == MKTAG('h','v','c','1'))
1452  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1);
1453  else
1454  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1455  return update_size(pb, pos);
1456 }
1457 
1458 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1459 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1460 {
1461  int interlaced;
1462  int cid;
1463  int display_width = track->par->width;
1464 
1465  if (track->vos_data && track->vos_len > 0x29) {
1466  if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {
1467  /* looks like a DNxHD bit stream */
1468  interlaced = (track->vos_data[5] & 2);
1469  cid = AV_RB32(track->vos_data + 0x28);
1470  } else {
1471  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");
1472  return 0;
1473  }
1474  } else {
1475  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");
1476  return 0;
1477  }
1478 
1479  avio_wb32(pb, 24); /* size */
1480  ffio_wfourcc(pb, "ACLR");
1481  ffio_wfourcc(pb, "ACLR");
1482  ffio_wfourcc(pb, "0001");
1483  if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */
1484  track->par->color_range == AVCOL_RANGE_UNSPECIFIED) {
1485  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1486  } else { /* Full range (0-255) */
1487  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1488  }
1489  avio_wb32(pb, 0); /* unknown */
1490 
1491  if (track->tag == MKTAG('A','V','d','h')) {
1492  avio_wb32(pb, 32);
1493  ffio_wfourcc(pb, "ADHR");
1494  ffio_wfourcc(pb, "0001");
1495  avio_wb32(pb, cid);
1496  avio_wb32(pb, 0); /* unknown */
1497  avio_wb32(pb, 1); /* unknown */
1498  avio_wb32(pb, 0); /* unknown */
1499  avio_wb32(pb, 0); /* unknown */
1500  return 0;
1501  }
1502 
1503  avio_wb32(pb, 24); /* size */
1504  ffio_wfourcc(pb, "APRG");
1505  ffio_wfourcc(pb, "APRG");
1506  ffio_wfourcc(pb, "0001");
1507  avio_wb32(pb, 1); /* unknown */
1508  avio_wb32(pb, 0); /* unknown */
1509 
1510  avio_wb32(pb, 120); /* size */
1511  ffio_wfourcc(pb, "ARES");
1512  ffio_wfourcc(pb, "ARES");
1513  ffio_wfourcc(pb, "0001");
1514  avio_wb32(pb, cid); /* dnxhd cid, some id ? */
1515  if ( track->par->sample_aspect_ratio.num > 0
1516  && track->par->sample_aspect_ratio.den > 0)
1517  display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;
1518  avio_wb32(pb, display_width);
1519  /* values below are based on samples created with quicktime and avid codecs */
1520  if (interlaced) {
1521  avio_wb32(pb, track->par->height / 2);
1522  avio_wb32(pb, 2); /* unknown */
1523  avio_wb32(pb, 0); /* unknown */
1524  avio_wb32(pb, 4); /* unknown */
1525  } else {
1526  avio_wb32(pb, track->par->height);
1527  avio_wb32(pb, 1); /* unknown */
1528  avio_wb32(pb, 0); /* unknown */
1529  if (track->par->height == 1080)
1530  avio_wb32(pb, 5); /* unknown */
1531  else
1532  avio_wb32(pb, 6); /* unknown */
1533  }
1534  /* padding */
1535  ffio_fill(pb, 0, 10 * 8);
1536 
1537  return 0;
1538 }
1539 
1540 static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)
1541 {
1542  avio_wb32(pb, 12);
1543  ffio_wfourcc(pb, "DpxE");
1544  if (track->par->extradata_size >= 12 &&
1545  !memcmp(&track->par->extradata[4], "DpxE", 4)) {
1546  avio_wb32(pb, track->par->extradata[11]);
1547  } else {
1548  avio_wb32(pb, 1);
1549  }
1550  return 0;
1551 }
1552 
1553 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
1554 {
1555  int tag;
1556 
1557  if (track->par->width == 720) { /* SD */
1558  if (track->par->height == 480) { /* NTSC */
1559  if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1560  else tag = MKTAG('d','v','c',' ');
1561  }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1562  else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1563  else tag = MKTAG('d','v','p','p');
1564  } else if (track->par->height == 720) { /* HD 720 line */
1565  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1566  else tag = MKTAG('d','v','h','p');
1567  } else if (track->par->height == 1080) { /* HD 1080 line */
1568  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1569  else tag = MKTAG('d','v','h','6');
1570  } else {
1571  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1572  return 0;
1573  }
1574 
1575  return tag;
1576 }
1577 
1578 static int defined_frame_rate(AVFormatContext *s, AVStream *st)
1579 {
1580  AVRational rational_framerate = st->avg_frame_rate;
1581  int rate = 0;
1582  if (rational_framerate.den != 0)
1583  rate = av_q2d(rational_framerate);
1584  return rate;
1585 }
1586 
1587 static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
1588 {
1589  int tag = track->par->codec_tag;
1590  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1591  AVStream *st = track->st;
1592  int rate = defined_frame_rate(s, st);
1593 
1594  if (!tag)
1595  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1596 
1597  if (track->par->format == AV_PIX_FMT_YUV420P) {
1598  if (track->par->width == 1280 && track->par->height == 720) {
1599  if (!interlaced) {
1600  if (rate == 24) tag = MKTAG('x','d','v','4');
1601  else if (rate == 25) tag = MKTAG('x','d','v','5');
1602  else if (rate == 30) tag = MKTAG('x','d','v','1');
1603  else if (rate == 50) tag = MKTAG('x','d','v','a');
1604  else if (rate == 60) tag = MKTAG('x','d','v','9');
1605  }
1606  } else if (track->par->width == 1440 && track->par->height == 1080) {
1607  if (!interlaced) {
1608  if (rate == 24) tag = MKTAG('x','d','v','6');
1609  else if (rate == 25) tag = MKTAG('x','d','v','7');
1610  else if (rate == 30) tag = MKTAG('x','d','v','8');
1611  } else {
1612  if (rate == 25) tag = MKTAG('x','d','v','3');
1613  else if (rate == 30) tag = MKTAG('x','d','v','2');
1614  }
1615  } else if (track->par->width == 1920 && track->par->height == 1080) {
1616  if (!interlaced) {
1617  if (rate == 24) tag = MKTAG('x','d','v','d');
1618  else if (rate == 25) tag = MKTAG('x','d','v','e');
1619  else if (rate == 30) tag = MKTAG('x','d','v','f');
1620  } else {
1621  if (rate == 25) tag = MKTAG('x','d','v','c');
1622  else if (rate == 30) tag = MKTAG('x','d','v','b');
1623  }
1624  }
1625  } else if (track->par->format == AV_PIX_FMT_YUV422P) {
1626  if (track->par->width == 1280 && track->par->height == 720) {
1627  if (!interlaced) {
1628  if (rate == 24) tag = MKTAG('x','d','5','4');
1629  else if (rate == 25) tag = MKTAG('x','d','5','5');
1630  else if (rate == 30) tag = MKTAG('x','d','5','1');
1631  else if (rate == 50) tag = MKTAG('x','d','5','a');
1632  else if (rate == 60) tag = MKTAG('x','d','5','9');
1633  }
1634  } else if (track->par->width == 1920 && track->par->height == 1080) {
1635  if (!interlaced) {
1636  if (rate == 24) tag = MKTAG('x','d','5','d');
1637  else if (rate == 25) tag = MKTAG('x','d','5','e');
1638  else if (rate == 30) tag = MKTAG('x','d','5','f');
1639  } else {
1640  if (rate == 25) tag = MKTAG('x','d','5','c');
1641  else if (rate == 30) tag = MKTAG('x','d','5','b');
1642  }
1643  }
1644  }
1645 
1646  return tag;
1647 }
1648 
1649 static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
1650 {
1651  int tag = track->par->codec_tag;
1652  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1653  AVStream *st = track->st;
1654  int rate = defined_frame_rate(s, st);
1655 
1656  if (!tag)
1657  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1658 
1659  if (track->par->format == AV_PIX_FMT_YUV420P10) {
1660  if (track->par->width == 960 && track->par->height == 720) {
1661  if (!interlaced) {
1662  if (rate == 24) tag = MKTAG('a','i','5','p');
1663  else if (rate == 25) tag = MKTAG('a','i','5','q');
1664  else if (rate == 30) tag = MKTAG('a','i','5','p');
1665  else if (rate == 50) tag = MKTAG('a','i','5','q');
1666  else if (rate == 60) tag = MKTAG('a','i','5','p');
1667  }
1668  } else if (track->par->width == 1440 && track->par->height == 1080) {
1669  if (!interlaced) {
1670  if (rate == 24) tag = MKTAG('a','i','5','3');
1671  else if (rate == 25) tag = MKTAG('a','i','5','2');
1672  else if (rate == 30) tag = MKTAG('a','i','5','3');
1673  } else {
1674  if (rate == 50) tag = MKTAG('a','i','5','5');
1675  else if (rate == 60) tag = MKTAG('a','i','5','6');
1676  }
1677  }
1678  } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
1679  if (track->par->width == 1280 && track->par->height == 720) {
1680  if (!interlaced) {
1681  if (rate == 24) tag = MKTAG('a','i','1','p');
1682  else if (rate == 25) tag = MKTAG('a','i','1','q');
1683  else if (rate == 30) tag = MKTAG('a','i','1','p');
1684  else if (rate == 50) tag = MKTAG('a','i','1','q');
1685  else if (rate == 60) tag = MKTAG('a','i','1','p');
1686  }
1687  } else if (track->par->width == 1920 && track->par->height == 1080) {
1688  if (!interlaced) {
1689  if (rate == 24) tag = MKTAG('a','i','1','3');
1690  else if (rate == 25) tag = MKTAG('a','i','1','2');
1691  else if (rate == 30) tag = MKTAG('a','i','1','3');
1692  } else {
1693  if (rate == 25) tag = MKTAG('a','i','1','5');
1694  else if (rate == 50) tag = MKTAG('a','i','1','5');
1695  else if (rate == 60) tag = MKTAG('a','i','1','6');
1696  }
1697  } else if ( track->par->width == 4096 && track->par->height == 2160
1698  || track->par->width == 3840 && track->par->height == 2160
1699  || track->par->width == 2048 && track->par->height == 1080) {
1700  tag = MKTAG('a','i','v','x');
1701  }
1702  }
1703 
1704  return tag;
1705 }
1706 
1707 static const struct {
1708  enum AVPixelFormat pix_fmt;
1709  uint32_t tag;
1710  unsigned bps;
1711 } mov_pix_fmt_tags[] = {
1712  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1713  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1714  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1715  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1716  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1717  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1718  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1719  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1720  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1721  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1722  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1723  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1724  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1725  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1726  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1727 };
1728 
1729 static int mov_get_dnxhd_codec_tag(AVFormatContext *s, MOVTrack *track)
1730 {
1731  int tag = MKTAG('A','V','d','n');
1732  if (track->par->profile != FF_PROFILE_UNKNOWN &&
1733  track->par->profile != FF_PROFILE_DNXHD)
1734  tag = MKTAG('A','V','d','h');
1735  return tag;
1736 }
1737 
1738 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
1739 {
1740  int tag = track->par->codec_tag;
1741  int i;
1742  enum AVPixelFormat pix_fmt;
1743 
1744  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1745  if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
1746  tag = mov_pix_fmt_tags[i].tag;
1747  track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1748  if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
1749  break;
1750  }
1751  }
1752 
1753  pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_MOV,
1754  track->par->bits_per_coded_sample);
1755  if (tag == MKTAG('r','a','w',' ') &&
1756  track->par->format != pix_fmt &&
1757  track->par->format != AV_PIX_FMT_GRAY8 &&
1758  track->par->format != AV_PIX_FMT_NONE)
1759  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1760  av_get_pix_fmt_name(track->par->format));
1761  return tag;
1762 }
1763 
1764 static unsigned int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
1765 {
1766  unsigned int tag = track->par->codec_tag;
1767 
1768  // "rtp " is used to distinguish internally created RTP-hint tracks
1769  // (with rtp_ctx) from other tracks.
1770  if (tag == MKTAG('r','t','p',' '))
1771  tag = 0;
1772  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1773  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||
1774  track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||
1775  track->par->codec_id == AV_CODEC_ID_H263 ||
1776  track->par->codec_id == AV_CODEC_ID_H264 ||
1777  track->par->codec_id == AV_CODEC_ID_DNXHD ||
1778  track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1779  av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio
1780  if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)
1781  tag = mov_get_dv_codec_tag(s, track);
1782  else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)
1783  tag = mov_get_rawvideo_codec_tag(s, track);
1784  else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1785  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1786  else if (track->par->codec_id == AV_CODEC_ID_H264)
1787  tag = mov_get_h264_codec_tag(s, track);
1788  else if (track->par->codec_id == AV_CODEC_ID_DNXHD)
1789  tag = mov_get_dnxhd_codec_tag(s, track);
1790  else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
1791  tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->par->codec_id);
1792  if (!tag) { // if no mac fcc found, try with Microsoft tags
1793  tag = ff_codec_get_tag(ff_codec_bmp_tags, track->par->codec_id);
1794  if (tag)
1795  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1796  "the file may be unplayable!\n");
1797  }
1798  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
1799  tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->par->codec_id);
1800  if (!tag) { // if no mac fcc found, try with Microsoft tags
1801  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);
1802  if (ms_tag) {
1803  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1804  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1805  "the file may be unplayable!\n");
1806  }
1807  }
1808  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
1809  tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->par->codec_id);
1810  }
1811 
1812  return tag;
1813 }
1814 
1815 static const AVCodecTag codec_cover_image_tags[] = {
1816  { AV_CODEC_ID_MJPEG, 0xD },
1817  { AV_CODEC_ID_PNG, 0xE },
1818  { AV_CODEC_ID_BMP, 0x1B },
1819  { AV_CODEC_ID_NONE, 0 },
1820 };
1821 
1822 static unsigned int validate_codec_tag(const AVCodecTag *const *tags,
1823  unsigned int tag, int codec_id)
1824 {
1825  int i;
1826 
1827  /**
1828  * Check that tag + id is in the table
1829  */
1830  for (i = 0; tags && tags[i]; i++) {
1831  const AVCodecTag *codec_tags = tags[i];
1832  while (codec_tags->id != AV_CODEC_ID_NONE) {
1833  if (ff_toupper4(codec_tags->tag) == ff_toupper4(tag) &&
1834  codec_tags->id == codec_id)
1835  return codec_tags->tag;
1836  codec_tags++;
1837  }
1838  }
1839  return 0;
1840 }
1841 
1842 static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
1843 {
1844  if (is_cover_image(track->st))
1845  return ff_codec_get_tag(codec_cover_image_tags, track->par->codec_id);
1846 
1847  if (track->mode == MODE_IPOD)
1848  if (!av_match_ext(s->url, "m4a") &&
1849  !av_match_ext(s->url, "m4v") &&
1850  !av_match_ext(s->url, "m4b"))
1851  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
1852  "Quicktime/Ipod might not play the file\n");
1853 
1854  if (track->mode == MODE_MOV) {
1855  return mov_get_codec_tag(s, track);
1856  } else
1857  return validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
1858  track->par->codec_id);
1859 }
1860 
1861 /** Write uuid atom.
1862  * Needed to make file play in iPods running newest firmware
1863  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1864  */
1865 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
1866 {
1867  avio_wb32(pb, 28);
1868  ffio_wfourcc(pb, "uuid");
1869  avio_wb32(pb, 0x6b6840f2);
1870  avio_wb32(pb, 0x5f244fc5);
1871  avio_wb32(pb, 0xba39a51b);
1872  avio_wb32(pb, 0xcf0323f3);
1873  avio_wb32(pb, 0x0);
1874  return 28;
1875 }
1876 
1877 static const uint16_t fiel_data[] = {
1878  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1879 };
1880 
1881 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)
1882 {
1883  unsigned mov_field_order = 0;
1884  if (field_order < FF_ARRAY_ELEMS(fiel_data))
1885  mov_field_order = fiel_data[field_order];
1886  else
1887  return 0;
1888  avio_wb32(pb, 10);
1889  ffio_wfourcc(pb, "fiel");
1890  avio_wb16(pb, mov_field_order);
1891  return 10;
1892 }
1893 
1894 static int mov_write_subtitle_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1895 {
1896  MOVMuxContext *mov = s->priv_data;
1897  int ret = AVERROR_BUG;
1898  int64_t pos = avio_tell(pb);
1899  avio_wb32(pb, 0); /* size */
1900  avio_wl32(pb, track->tag); // store it byteswapped
1901  avio_wb32(pb, 0); /* Reserved */
1902  avio_wb16(pb, 0); /* Reserved */
1903  avio_wb16(pb, 1); /* Data-reference index */
1904 
1905  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1906  mov_write_esds_tag(pb, track);
1907  else if (track->par->codec_id == AV_CODEC_ID_TTML) {
1908  switch (track->par->codec_tag) {
1909  case MOV_ISMV_TTML_TAG:
1910  // ISMV dfxp requires no extradata.
1911  break;
1912  case MOV_MP4_TTML_TAG:
1913  // As specified in 14496-30, XMLSubtitleSampleEntry
1914  // Namespace
1915  avio_put_str(pb, "http://www.w3.org/ns/ttml");
1916  // Empty schema_location
1917  avio_w8(pb, 0);
1918  // Empty auxiliary_mime_types
1919  avio_w8(pb, 0);
1920  break;
1921  default:
1922  av_log(NULL, AV_LOG_ERROR,
1923  "Unknown codec tag '%s' utilized for TTML stream with "
1924  "index %d (track id %d)!\n",
1925  av_fourcc2str(track->par->codec_tag), track->st->index,
1926  track->track_id);
1927  return AVERROR(EINVAL);
1928  }
1929  } else if (track->par->extradata_size)
1930  avio_write(pb, track->par->extradata, track->par->extradata_size);
1931 
1932  if (mov->write_btrt &&
1933  ((ret = mov_write_btrt_tag(pb, track)) < 0))
1934  return ret;
1935 
1936  return update_size(pb, pos);
1937 }
1938 
1939 static int mov_write_st3d_tag(AVFormatContext *s, AVIOContext *pb, AVStereo3D *stereo_3d)
1940 {
1941  int8_t stereo_mode;
1942 
1943  if (stereo_3d->flags != 0) {
1944  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);
1945  return 0;
1946  }
1947 
1948  switch (stereo_3d->type) {
1949  case AV_STEREO3D_2D:
1950  stereo_mode = 0;
1951  break;
1952  case AV_STEREO3D_TOPBOTTOM:
1953  stereo_mode = 1;
1954  break;
1955  case AV_STEREO3D_SIDEBYSIDE:
1956  stereo_mode = 2;
1957  break;
1958  default:
1959  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));
1960  return 0;
1961  }
1962  avio_wb32(pb, 13); /* size */
1963  ffio_wfourcc(pb, "st3d");
1964  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1965  avio_w8(pb, stereo_mode);
1966  return 13;
1967 }
1968 
1969 static int mov_write_sv3d_tag(AVFormatContext *s, AVIOContext *pb, AVSphericalMapping *spherical_mapping)
1970 {
1971  int64_t sv3d_pos, svhd_pos, proj_pos;
1972  const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;
1973 
1974  if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
1975  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
1976  spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {
1977  av_log(s, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);
1978  return 0;
1979  }
1980 
1981  sv3d_pos = avio_tell(pb);
1982  avio_wb32(pb, 0); /* size */
1983  ffio_wfourcc(pb, "sv3d");
1984 
1985  svhd_pos = avio_tell(pb);
1986  avio_wb32(pb, 0); /* size */
1987  ffio_wfourcc(pb, "svhd");
1988  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1989  avio_put_str(pb, metadata_source);
1990  update_size(pb, svhd_pos);
1991 
1992  proj_pos = avio_tell(pb);
1993  avio_wb32(pb, 0); /* size */
1994  ffio_wfourcc(pb, "proj");
1995 
1996  avio_wb32(pb, 24); /* size */
1997  ffio_wfourcc(pb, "prhd");
1998  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1999  avio_wb32(pb, spherical_mapping->yaw);
2000  avio_wb32(pb, spherical_mapping->pitch);
2001  avio_wb32(pb, spherical_mapping->roll);
2002 
2003  switch (spherical_mapping->projection) {
2004  case AV_SPHERICAL_EQUIRECTANGULAR:
2005  case AV_SPHERICAL_EQUIRECTANGULAR_TILE:
2006  avio_wb32(pb, 28); /* size */
2007  ffio_wfourcc(pb, "equi");
2008  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2009  avio_wb32(pb, spherical_mapping->bound_top);
2010  avio_wb32(pb, spherical_mapping->bound_bottom);
2011  avio_wb32(pb, spherical_mapping->bound_left);
2012  avio_wb32(pb, spherical_mapping->bound_right);
2013  break;
2014  case AV_SPHERICAL_CUBEMAP:
2015  avio_wb32(pb, 20); /* size */
2016  ffio_wfourcc(pb, "cbmp");
2017  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
2018  avio_wb32(pb, 0); /* layout */
2019  avio_wb32(pb, spherical_mapping->padding); /* padding */
2020  break;
2021  }
2022  update_size(pb, proj_pos);
2023 
2024  return update_size(pb, sv3d_pos);
2025 }
2026 
2027 static int mov_write_dvcc_dvvc_tag(AVFormatContext *s, AVIOContext *pb, AVDOVIDecoderConfigurationRecord *dovi)
2028 {
2029  uint8_t buf[ISOM_DVCC_DVVC_SIZE];
2030 
2031  avio_wb32(pb, 32); /* size = 8 + 24 */
2032  if (dovi->dv_profile > 10)
2033  ffio_wfourcc(pb, "dvwC");
2034  else if (dovi->dv_profile > 7)
2035  ffio_wfourcc(pb, "dvvC");
2036  else
2037  ffio_wfourcc(pb, "dvcC");
2038 
2039  ff_isom_put_dvcc_dvvc(s, buf, dovi);
2040  avio_write(pb, buf, sizeof(buf));
2041 
2042  return 32; /* 8 + 24 */
2043 }
2044 
2045 static int mov_write_clap_tag(AVIOContext *pb, MOVTrack *track)
2046 {
2047  avio_wb32(pb, 40);
2048  ffio_wfourcc(pb, "clap");
2049  avio_wb32(pb, track->par->width); /* apertureWidth_N */
2050  avio_wb32(pb, 1); /* apertureWidth_D (= 1) */
2051  avio_wb32(pb, track->height); /* apertureHeight_N */
2052  avio_wb32(pb, 1); /* apertureHeight_D (= 1) */
2053  avio_wb32(pb, 0); /* horizOff_N (= 0) */
2054  avio_wb32(pb, 1); /* horizOff_D (= 1) */
2055  avio_wb32(pb, 0); /* vertOff_N (= 0) */
2056  avio_wb32(pb, 1); /* vertOff_D (= 1) */
2057  return 40;
2058 }
2059 
2060 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
2061 {
2062  AVRational sar;
2063  av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,
2064  track->par->sample_aspect_ratio.den, INT_MAX);
2065 
2066  avio_wb32(pb, 16);
2067  ffio_wfourcc(pb, "pasp");
2068  avio_wb32(pb, sar.num);
2069  avio_wb32(pb, sar.den);
2070  return 16;
2071 }
2072 
2073 static int mov_write_gama_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track, double gamma)
2074 {
2075  uint32_t gama = 0;
2076  if (gamma <= 0.0)
2077  gamma = av_csp_approximate_trc_gamma(track->par->color_trc);
2078  av_log(s, AV_LOG_DEBUG, "gamma value %g\n", gamma);
2079 
2080  if (gamma > 1e-6) {
2081  gama = (uint32_t)lrint((double)(1<<16) * gamma);
2082  av_log(s, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);
2083 
2084  av_assert0(track->mode == MODE_MOV);
2085  avio_wb32(pb, 12);
2086  ffio_wfourcc(pb, "gama");
2087  avio_wb32(pb, gama);
2088  return 12;
2089  } else {
2090  av_log(s, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
2091  }
2092  return 0;
2093 }
2094 
2095 static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track, int prefer_icc)
2096 {
2097  int64_t pos = avio_tell(pb);
2098 
2099  // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
2100  // Ref (MP4): ISO/IEC 14496-12:2012
2101 
2102  const uint8_t *icc_profile;
2103  size_t icc_profile_size;
2104 
2105  if (prefer_icc) {
2106  icc_profile = av_stream_get_side_data(track->st, AV_PKT_DATA_ICC_PROFILE, &icc_profile_size);
2107 
2108  if (icc_profile) {
2109  avio_wb32(pb, 12 + icc_profile_size);
2110  ffio_wfourcc(pb, "colr");
2111  ffio_wfourcc(pb, "prof");
2112  avio_write(pb, icc_profile, icc_profile_size);
2113  return 12 + icc_profile_size;
2114  }
2115  else {
2116  av_log(NULL, AV_LOG_INFO, "no ICC profile found, will write nclx/nclc colour info instead\n");
2117  }
2118  }
2119 
2120  /* We should only ever be called for MOV, MP4 and AVIF. */
2121  av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4 ||
2122  track->mode == MODE_AVIF);
2123 
2124  avio_wb32(pb, 0); /* size */
2125  ffio_wfourcc(pb, "colr");
2126  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF)
2127  ffio_wfourcc(pb, "nclx");
2128  else
2129  ffio_wfourcc(pb, "nclc");
2130  // Do not try to guess the color info if it is AVCOL_PRI_UNSPECIFIED.
2131  // e.g., Dolby Vision for Apple devices should be set to AVCOL_PRI_UNSPECIFIED. See
2132  // https://developer.apple.com/av-foundation/High-Dynamic-Range-Metadata-for-Apple-Devices.pdf
2133  avio_wb16(pb, track->par->color_primaries);
2134  avio_wb16(pb, track->par->color_trc);
2135  avio_wb16(pb, track->par->color_space);
2136  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2137  int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
2138  avio_w8(pb, full_range << 7);
2139  }
2140 
2141  return update_size(pb, pos);
2142 }
2143 
2144 static int mov_write_clli_tag(AVIOContext *pb, MOVTrack *track)
2145 {
2146  const uint8_t *side_data;
2147  const AVContentLightMetadata *content_light_metadata;
2148 
2149  side_data = av_stream_get_side_data(track->st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL, NULL);
2150  if (!side_data) {
2151  return 0;
2152  }
2153  content_light_metadata = (const AVContentLightMetadata*)side_data;
2154 
2155  avio_wb32(pb, 12); // size
2156  ffio_wfourcc(pb, "clli");
2157  avio_wb16(pb, content_light_metadata->MaxCLL);
2158  avio_wb16(pb, content_light_metadata->MaxFALL);
2159  return 12;
2160 }
2161 
2162 static inline int64_t rescale_mdcv(AVRational q, int b)
2163 {
2164  return av_rescale(q.num, b, q.den);
2165 }
2166 
2167 static int mov_write_mdcv_tag(AVIOContext *pb, MOVTrack *track)
2168 {
2169  const int chroma_den = 50000;
2170  const int luma_den = 10000;
2171  const uint8_t *side_data;
2172  const AVMasteringDisplayMetadata *metadata;
2173 
2174  side_data = av_stream_get_side_data(track->st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, NULL);
2175  metadata = (const AVMasteringDisplayMetadata*)side_data;
2176  if (!metadata || !metadata->has_primaries || !metadata->has_luminance) {
2177  return 0;
2178  }
2179 
2180  avio_wb32(pb, 32); // size
2181  ffio_wfourcc(pb, "mdcv");
2182  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[1][0], chroma_den));
2183  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[1][1], chroma_den));
2184  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[2][0], chroma_den));
2185  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[2][1], chroma_den));
2186  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[0][0], chroma_den));
2187  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[0][1], chroma_den));
2188  avio_wb16(pb, rescale_mdcv(metadata->white_point[0], chroma_den));
2189  avio_wb16(pb, rescale_mdcv(metadata->white_point[1], chroma_den));
2190  avio_wb32(pb, rescale_mdcv(metadata->max_luminance, luma_den));
2191  avio_wb32(pb, rescale_mdcv(metadata->min_luminance, luma_den));
2192  return 32;
2193 }
2194 
2195 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
2196 {
2197  AVDictionaryEntry *encoder;
2198  int xdcam_res = (track->par->width == 1280 && track->par->height == 720)
2199  || (track->par->width == 1440 && track->par->height == 1080)
2200  || (track->par->width == 1920 && track->par->height == 1080);
2201 
2202  if ((track->mode == MODE_AVIF ||
2203  track->mode == MODE_MOV ||
2204  track->mode == MODE_MP4) &&
2205  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
2206  av_strlcpy(compressor_name, encoder->value, 32);
2207  } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
2208  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
2209  AVStream *st = track->st;
2210  int rate = defined_frame_rate(NULL, st);
2211  av_strlcatf(compressor_name, len, "XDCAM");
2212  if (track->par->format == AV_PIX_FMT_YUV422P) {
2213  av_strlcatf(compressor_name, len, " HD422");
2214  } else if(track->par->width == 1440) {
2215  av_strlcatf(compressor_name, len, " HD");
2216  } else
2217  av_strlcatf(compressor_name, len, " EX");
2218 
2219  av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');
2220 
2221  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
2222  }
2223 }
2224 
2225 static int mov_write_ccst_tag(AVIOContext *pb)
2226 {
2227  int64_t pos = avio_tell(pb);
2228  // Write sane defaults:
2229  // all_ref_pics_intra = 0 : all samples can use any type of reference.
2230  // intra_pred_used = 1 : intra prediction may or may not be used.
2231  // max_ref_per_pic = 15 : reserved value to indicate that any number of
2232  // reference images can be used.
2233  uint8_t ccstValue = (0 << 7) | /* all_ref_pics_intra */
2234  (1 << 6) | /* intra_pred_used */
2235  (15 << 2); /* max_ref_per_pic */
2236  avio_wb32(pb, 0); /* size */
2237  ffio_wfourcc(pb, "ccst");
2238  avio_wb32(pb, 0); /* Version & flags */
2239  avio_w8(pb, ccstValue);
2240  avio_wb24(pb, 0); /* reserved */
2241  return update_size(pb, pos);
2242 }
2243 
2244 static int mov_write_aux_tag(AVIOContext *pb, const char *aux_type)
2245 {
2246  int64_t pos = avio_tell(pb);
2247  avio_wb32(pb, 0); /* size */
2248  ffio_wfourcc(pb, aux_type);
2249  avio_wb32(pb, 0); /* Version & flags */
2250  avio_write(pb, "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha\0", 44);
2251  return update_size(pb, pos);
2252 }
2253 
2254 static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2255 {
2256  int ret = AVERROR_BUG;
2257  int64_t pos = avio_tell(pb);
2258  char compressor_name[32] = { 0 };
2259  int avid = 0;
2260 
2261  int uncompressed_ycbcr = ((track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVY422)
2262  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_YUYV422)
2263  || track->par->codec_id == AV_CODEC_ID_V308
2264  || track->par->codec_id == AV_CODEC_ID_V408
2265  || track->par->codec_id == AV_CODEC_ID_V410
2266  || track->par->codec_id == AV_CODEC_ID_V210);
2267 
2268  avio_wb32(pb, 0); /* size */
2269  if (mov->encryption_scheme != MOV_ENC_NONE) {
2270  ffio_wfourcc(pb, "encv");
2271  } else {
2272  avio_wl32(pb, track->tag); // store it byteswapped
2273  }
2274  avio_wb32(pb, 0); /* Reserved */
2275  avio_wb16(pb, 0); /* Reserved */
2276  avio_wb16(pb, 1); /* Data-reference index */
2277 
2278  if (uncompressed_ycbcr) {
2279  avio_wb16(pb, 2); /* Codec stream version */
2280  } else {
2281  avio_wb16(pb, 0); /* Codec stream version */
2282  }
2283  avio_wb16(pb, 0); /* Codec stream revision (=0) */
2284  if (track->mode == MODE_MOV) {
2285  ffio_wfourcc(pb, "FFMP"); /* Vendor */
2286  if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO || uncompressed_ycbcr) {
2287  avio_wb32(pb, 0); /* Temporal Quality */
2288  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
2289  } else {
2290  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
2291  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
2292  }
2293  } else {
2294  ffio_fill(pb, 0, 3 * 4); /* Reserved */
2295  }
2296  avio_wb16(pb, track->par->width); /* Video width */
2297  avio_wb16(pb, track->height); /* Video height */
2298  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
2299  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
2300  avio_wb32(pb, 0); /* Data size (= 0) */
2301  avio_wb16(pb, 1); /* Frame count (= 1) */
2302 
2303  find_compressor(compressor_name, 32, track);
2304  avio_w8(pb, strlen(compressor_name));
2305  avio_write(pb, compressor_name, 31);
2306 
2307  if (track->mode == MODE_MOV &&
2308  (track->par->codec_id == AV_CODEC_ID_V410 || track->par->codec_id == AV_CODEC_ID_V210))
2309  avio_wb16(pb, 0x18);
2310  else if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
2311  avio_wb16(pb, track->par->bits_per_coded_sample |
2312  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
2313  else
2314  avio_wb16(pb, 0x18); /* Reserved */
2315 
2316  if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
2317  int pal_size, i;
2318  avio_wb16(pb, 0); /* Color table ID */
2319  avio_wb32(pb, 0); /* Color table seed */
2320  avio_wb16(pb, 0x8000); /* Color table flags */
2321  if (track->par->bits_per_coded_sample < 0 || track->par->bits_per_coded_sample > 8)
2322  return AVERROR(EINVAL);
2323  pal_size = 1 << track->par->bits_per_coded_sample;
2324  avio_wb16(pb, pal_size - 1); /* Color table size (zero-relative) */
2325  for (i = 0; i < pal_size; i++) {
2326  uint32_t rgb = track->palette[i];
2327  uint16_t r = (rgb >> 16) & 0xff;
2328  uint16_t g = (rgb >> 8) & 0xff;
2329  uint16_t b = rgb & 0xff;
2330  avio_wb16(pb, 0);
2331  avio_wb16(pb, (r << 8) | r);
2332  avio_wb16(pb, (g << 8) | g);
2333  avio_wb16(pb, (b << 8) | b);
2334  }
2335  } else
2336  avio_wb16(pb, 0xffff); /* Reserved */
2337 
2338  if (track->tag == MKTAG('m','p','4','v'))
2339  mov_write_esds_tag(pb, track);
2340  else if (track->par->codec_id == AV_CODEC_ID_H263)
2341  mov_write_d263_tag(pb);
2342  else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
2343  track->par->codec_id == AV_CODEC_ID_SVQ3) {
2344  mov_write_extradata_tag(pb, track);
2345  avio_wb32(pb, 0);
2346  } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
2347  mov_write_avid_tag(pb, track);
2348  avid = 1;
2349  } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
2350  mov_write_hvcc_tag(pb, track);
2351  else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
2352  mov_write_avcc_tag(pb, track);
2353  if (track->mode == MODE_IPOD)
2354  mov_write_uuid_tag_ipod(pb);
2355  } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
2356  mov_write_vpcc_tag(mov->fc, pb, track);
2357  } else if (track->par->codec_id == AV_CODEC_ID_AV1) {
2358  mov_write_av1c_tag(pb, track);
2359  } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
2360  mov_write_dvc1_tag(pb, track);
2361  else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
2362  track->par->codec_id == AV_CODEC_ID_VP6A) {
2363  /* Don't write any potential extradata here - the cropping
2364  * is signalled via the normal width/height fields. */
2365  } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
2366  if (track->par->codec_tag == MKTAG('R','1','0','k'))
2367  mov_write_dpxe_tag(pb, track);
2368  } else if (track->vos_len > 0)
2369  mov_write_glbl_tag(pb, track);
2370 
2371  if (track->par->codec_id != AV_CODEC_ID_H264 &&
2372  track->par->codec_id != AV_CODEC_ID_MPEG4 &&
2373  track->par->codec_id != AV_CODEC_ID_DNXHD) {
2374  int field_order = track->par->field_order;
2375 
2376  if (field_order != AV_FIELD_UNKNOWN)
2377  mov_write_fiel_tag(pb, track, field_order);
2378  }
2379 
2380  if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
2381  if (track->mode == MODE_MOV)
2382  mov_write_gama_tag(s, pb, track, mov->gamma);
2383  else
2384  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
2385  }
2386  if (track->mode == MODE_MOV || track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2387  int has_color_info = track->par->color_primaries != AVCOL_PRI_UNSPECIFIED &&
2388  track->par->color_trc != AVCOL_TRC_UNSPECIFIED &&
2389  track->par->color_space != AVCOL_SPC_UNSPECIFIED;
2390  if (has_color_info || mov->flags & FF_MOV_FLAG_WRITE_COLR ||
2391  av_stream_get_side_data(track->st, AV_PKT_DATA_ICC_PROFILE, NULL)) {
2392  int prefer_icc = mov->flags & FF_MOV_FLAG_PREFER_ICC || !has_color_info;
2393  mov_write_colr_tag(pb, track, prefer_icc);
2394  }
2395  } else if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
2396  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4 or AVIF.\n");
2397  }
2398 
2399  if (track->mode == MODE_MOV || track->mode == MODE_MP4) {
2400  mov_write_clli_tag(pb, track);
2401  mov_write_mdcv_tag(pb, track);
2402  }
2403 
2404  if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2405  AVStereo3D* stereo_3d = (AVStereo3D*) av_stream_get_side_data(track->st, AV_PKT_DATA_STEREO3D, NULL);
2406  AVSphericalMapping* spherical_mapping = (AVSphericalMapping*)av_stream_get_side_data(track->st, AV_PKT_DATA_SPHERICAL, NULL);
2407  AVDOVIDecoderConfigurationRecord *dovi = (AVDOVIDecoderConfigurationRecord *)
2408  av_stream_get_side_data(track->st, AV_PKT_DATA_DOVI_CONF, NULL);
2409 
2410  if (stereo_3d)
2411  mov_write_st3d_tag(s, pb, stereo_3d);
2412  if (spherical_mapping)
2413  mov_write_sv3d_tag(mov->fc, pb, spherical_mapping);
2414  if (dovi)
2415  mov_write_dvcc_dvvc_tag(s, pb, dovi);
2416  }
2417 
2418  if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
2419  mov_write_pasp_tag(pb, track);
2420  }
2421 
2422  if (uncompressed_ycbcr){
2423  mov_write_clap_tag(pb, track);
2424  }
2425 
2426  if (mov->encryption_scheme != MOV_ENC_NONE) {
2427  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
2428  }
2429 
2430  if (mov->write_btrt &&
2431  ((ret = mov_write_btrt_tag(pb, track)) < 0))
2432  return ret;
2433 
2434  /* extra padding for avid stsd */
2435  /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
2436  if (avid)
2437  avio_wb32(pb, 0);
2438 
2439  if (track->mode == MODE_AVIF) {
2440  mov_write_ccst_tag(pb);
2441  if (s->nb_streams > 0 && track == &mov->tracks[1])
2442  mov_write_aux_tag(pb, "auxi");
2443  }
2444 
2445  return update_size(pb, pos);
2446 }
2447 
2448 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
2449 {
2450  int64_t pos = avio_tell(pb);
2451  avio_wb32(pb, 0); /* size */
2452  ffio_wfourcc(pb, "rtp ");
2453  avio_wb32(pb, 0); /* Reserved */
2454  avio_wb16(pb, 0); /* Reserved */
2455  avio_wb16(pb, 1); /* Data-reference index */
2456 
2457  avio_wb16(pb, 1); /* Hint track version */
2458  avio_wb16(pb, 1); /* Highest compatible version */
2459  avio_wb32(pb, track->max_packet_size); /* Max packet size */
2460 
2461  avio_wb32(pb, 12); /* size */
2462  ffio_wfourcc(pb, "tims");
2463  avio_wb32(pb, track->timescale);
2464 
2465  return update_size(pb, pos);
2466 }
2467 
2468 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
2469 {
2470  uint64_t str_size =strlen(reel_name);
2471  int64_t pos = avio_tell(pb);
2472 
2473  if (str_size >= UINT16_MAX){
2474  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
2475  avio_wb16(pb, 0);
2476  return AVERROR(EINVAL);
2477  }
2478 
2479  avio_wb32(pb, 0); /* size */
2480  ffio_wfourcc(pb, "name"); /* Data format */
2481  avio_wb16(pb, str_size); /* string size */
2482  avio_wb16(pb, track->language); /* langcode */
2483  avio_write(pb, reel_name, str_size); /* reel name */
2484  return update_size(pb,pos);
2485 }
2486 
2487 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
2488 {
2489  int64_t pos = avio_tell(pb);
2490 #if 1
2491  int frame_duration;
2492  int nb_frames;
2493  AVDictionaryEntry *t = NULL;
2494 
2495  if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {
2496  av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");
2497  return AVERROR(EINVAL);
2498  } else {
2499  frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);
2500  nb_frames = ROUNDED_DIV(track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);
2501  }
2502 
2503  if (nb_frames > 255) {
2504  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
2505  return AVERROR(EINVAL);
2506  }
2507 
2508  avio_wb32(pb, 0); /* size */
2509  ffio_wfourcc(pb, "tmcd"); /* Data format */
2510  avio_wb32(pb, 0); /* Reserved */
2511  avio_wb32(pb, 1); /* Data reference index */
2512  avio_wb32(pb, 0); /* Flags */
2513  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
2514  avio_wb32(pb, track->timescale); /* Timescale */
2515  avio_wb32(pb, frame_duration); /* Frame duration */
2516  avio_w8(pb, nb_frames); /* Number of frames */
2517  avio_w8(pb, 0); /* Reserved */
2518 
2519  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
2520  if (t && utf8len(t->value) && track->mode != MODE_MP4)
2521  mov_write_source_reference_tag(pb, track, t->value);
2522  else
2523  avio_wb16(pb, 0); /* zero size */
2524 #else
2525 
2526  avio_wb32(pb, 0); /* size */
2527  ffio_wfourcc(pb, "tmcd"); /* Data format */
2528  avio_wb32(pb, 0); /* Reserved */
2529  avio_wb32(pb, 1); /* Data reference index */
2530  if (track->par->extradata_size)
2531  avio_write(pb, track->par->extradata, track->par->extradata_size);
2532 #endif
2533  return update_size(pb, pos);
2534 }
2535 
2536 static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)
2537 {
2538  int64_t pos = avio_tell(pb);
2539  avio_wb32(pb, 0); /* size */
2540  ffio_wfourcc(pb, "gpmd");
2541  avio_wb32(pb, 0); /* Reserved */
2542  avio_wb16(pb, 0); /* Reserved */
2543  avio_wb16(pb, 1); /* Data-reference index */
2544  avio_wb32(pb, 0); /* Reserved */
2545  return update_size(pb, pos);
2546 }
2547 
2548 static int mov_write_stsd_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2549 {
2550  int64_t pos = avio_tell(pb);
2551  int ret = 0;
2552  avio_wb32(pb, 0); /* size */
2553  ffio_wfourcc(pb, "stsd");
2554  avio_wb32(pb, 0); /* version & flags */
2555  avio_wb32(pb, 1); /* entry count */
2556  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2557  ret = mov_write_video_tag(s, pb, mov, track);
2558  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2559  ret = mov_write_audio_tag(s, pb, mov, track);
2560  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
2561  ret = mov_write_subtitle_tag(s, pb, track);
2562  else if (track->par->codec_tag == MKTAG('r','t','p',' '))
2563  ret = mov_write_rtp_tag(pb, track);
2564  else if (track->par->codec_tag == MKTAG('t','m','c','d'))
2565  ret = mov_write_tmcd_tag(pb, track);
2566  else if (track->par->codec_tag == MKTAG('g','p','m','d'))
2567  ret = mov_write_gpmd_tag(pb, track);
2568 
2569  if (ret < 0)
2570  return ret;
2571 
2572  return update_size(pb, pos);
2573 }
2574 
2575 static int mov_write_ctts_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2576 {
2577  MOVMuxContext *mov = s->priv_data;
2578  MOVCtts *ctts_entries;
2579  uint32_t entries = 0;
2580  uint32_t atom_size;
2581  int i;
2582 
2583  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
2584  if (!ctts_entries)
2585  return AVERROR(ENOMEM);
2586  ctts_entries[0].count = 1;
2587  ctts_entries[0].duration = track->cluster[0].cts;
2588  for (i = 1; i < track->entry; i++) {
2589  if (track->cluster[i].cts == ctts_entries[entries].duration) {
2590  ctts_entries[entries].count++; /* compress */
2591  } else {
2592  entries++;
2593  ctts_entries[entries].duration = track->cluster[i].cts;
2594  ctts_entries[entries].count = 1;
2595  }
2596  }
2597  entries++; /* last one */
2598  atom_size = 16 + (entries * 8);
2599  avio_wb32(pb, atom_size); /* size */
2600  ffio_wfourcc(pb, "ctts");
2601  if (mov->flags & FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS)
2602  avio_w8(pb, 1); /* version */
2603  else
2604  avio_w8(pb, 0); /* version */
2605  avio_wb24(pb, 0); /* flags */
2606  avio_wb32(pb, entries); /* entry count */
2607  for (i = 0; i < entries; i++) {
2608  avio_wb32(pb, ctts_entries[i].count);
2609  avio_wb32(pb, ctts_entries[i].duration);
2610  }
2611  av_free(ctts_entries);
2612  return atom_size;
2613 }
2614 
2615 /* Time to sample atom */
2616 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
2617 {
2618  MOVStts *stts_entries = NULL;
2619  uint32_t entries = -1;
2620  uint32_t atom_size;
2621  int i;
2622 
2623  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
2624  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
2625  if (!stts_entries)
2626  return AVERROR(ENOMEM);
2627  stts_entries[0].count = track->sample_count;
2628  stts_entries[0].duration = 1;
2629  entries = 1;
2630  } else {
2631  if (track->entry) {
2632  stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */
2633  if (!stts_entries)
2634  return AVERROR(ENOMEM);
2635  }
2636  for (i = 0; i < track->entry; i++) {
2637  int duration = get_cluster_duration(track, i);
2638  if (i && duration == stts_entries[entries].duration) {
2639  stts_entries[entries].count++; /* compress */
2640  } else {
2641  entries++;
2642  stts_entries[entries].duration = duration;
2643  stts_entries[entries].count = 1;
2644  }
2645  }
2646  entries++; /* last one */
2647  }
2648  atom_size = 16 + (entries * 8);
2649  avio_wb32(pb, atom_size); /* size */
2650  ffio_wfourcc(pb, "stts");
2651  avio_wb32(pb, 0); /* version & flags */
2652  avio_wb32(pb, entries); /* entry count */
2653  for (i = 0; i < entries; i++) {
2654  avio_wb32(pb, stts_entries[i].count);
2655  avio_wb32(pb, stts_entries[i].duration);
2656  }
2657  av_free(stts_entries);
2658  return atom_size;
2659 }
2660 
2661 static int mov_write_dref_tag(AVIOContext *pb)
2662 {
2663  avio_wb32(pb, 28); /* size */
2664  ffio_wfourcc(pb, "dref");
2665  avio_wb32(pb, 0); /* version & flags */
2666  avio_wb32(pb, 1); /* entry count */
2667 
2668  avio_wb32(pb, 0xc); /* size */
2669  //FIXME add the alis and rsrc atom
2670  ffio_wfourcc(pb, "url ");
2671  avio_wb32(pb, 1); /* version & flags */
2672 
2673  return 28;
2674 }
2675 
2676 static int mov_preroll_write_stbl_atoms(AVIOContext *pb, MOVTrack *track)
2677 {
2678  struct sgpd_entry {
2679  int count;
2680  int16_t roll_distance;
2681  int group_description_index;
2682  };
2683 
2684  struct sgpd_entry *sgpd_entries = NULL;
2685  int entries = -1;
2686  int group = 0;
2687  int i, j;
2688 
2689  const int OPUS_SEEK_PREROLL_MS = 80;
2690  int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,
2691  (AVRational){1, 1000},
2692  (AVRational){1, 48000});
2693 
2694  if (!track->entry)
2695  return 0;
2696 
2697  sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));
2698  if (!sgpd_entries)
2699  return AVERROR(ENOMEM);
2700 
2701  av_assert0(track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC);
2702 
2703  if (track->par->codec_id == AV_CODEC_ID_OPUS) {
2704  for (i = 0; i < track->entry; i++) {
2705  int roll_samples_remaining = roll_samples;
2706  int distance = 0;
2707  for (j = i - 1; j >= 0; j--) {
2708  roll_samples_remaining -= get_cluster_duration(track, j);
2709  distance++;
2710  if (roll_samples_remaining <= 0)
2711  break;
2712  }
2713  /* We don't have enough preceeding samples to compute a valid
2714  roll_distance here, so this sample can't be independently
2715  decoded. */
2716  if (roll_samples_remaining > 0)
2717  distance = 0;
2718  /* Verify distance is a maximum of 32 (2.5ms) packets. */
2719  if (distance > 32)
2720  return AVERROR_INVALIDDATA;
2721  if (i && distance == sgpd_entries[entries].roll_distance) {
2722  sgpd_entries[entries].count++;
2723  } else {
2724  entries++;
2725  sgpd_entries[entries].count = 1;
2726  sgpd_entries[entries].roll_distance = distance;
2727  sgpd_entries[entries].group_description_index = distance ? ++group : 0;
2728  }
2729  }
2730  } else {
2731  entries++;
2732  sgpd_entries[entries].count = track->sample_count;
2733  sgpd_entries[entries].roll_distance = 1;
2734  sgpd_entries[entries].group_description_index = ++group;
2735  }
2736  entries++;
2737 
2738  if (!group) {
2739  av_free(sgpd_entries);
2740  return 0;
2741  }
2742 
2743  /* Write sgpd tag */
2744  avio_wb32(pb, 24 + (group * 2)); /* size */
2745  ffio_wfourcc(pb, "sgpd");
2746  avio_wb32(pb, 1 << 24); /* fullbox */
2747  ffio_wfourcc(pb, "roll");
2748  avio_wb32(pb, 2); /* default_length */
2749  avio_wb32(pb, group); /* entry_count */
2750  for (i = 0; i < entries; i++) {
2751  if (sgpd_entries[i].group_description_index) {
2752  avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */
2753  }
2754  }
2755 
2756  /* Write sbgp tag */
2757  avio_wb32(pb, 20 + (entries * 8)); /* size */
2758  ffio_wfourcc(pb, "sbgp");
2759  avio_wb32(pb, 0); /* fullbox */
2760  ffio_wfourcc(pb, "roll");
2761  avio_wb32(pb, entries); /* entry_count */
2762  for (i = 0; i < entries; i++) {
2763  avio_wb32(pb, sgpd_entries[i].count); /* sample_count */
2764  avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */
2765  }
2766 
2767  av_free(sgpd_entries);
2768  return 0;
2769 }
2770 
2771 static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2772 {
2773  int64_t pos = avio_tell(pb);
2774  int ret = 0;
2775 
2776  avio_wb32(pb, 0); /* size */
2777  ffio_wfourcc(pb, "stbl");
2778  if ((ret = mov_write_stsd_tag(s, pb, mov, track)) < 0)
2779  return ret;
2780  mov_write_stts_tag(pb, track);
2781  if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2782  track->par->codec_id == AV_CODEC_ID_TRUEHD ||
2783  track->par->codec_id == AV_CODEC_ID_MPEGH_3D_AUDIO ||
2784  track->par->codec_tag == MKTAG('r','t','p',' ')) &&
2785  track->has_keyframes && track->has_keyframes < track->entry)
2786  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
2787  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && track->has_disposable)
2788  mov_write_sdtp_tag(pb, track);
2789  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
2790  mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
2791  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
2792  track->flags & MOV_TRACK_CTTS && track->entry) {
2793 
2794  if ((ret = mov_write_ctts_tag(s, pb, track)) < 0)
2795  return ret;
2796  }
2797  mov_write_stsc_tag(pb, track);
2798  mov_write_stsz_tag(pb, track);
2799  mov_write_stco_tag(pb, track);
2800  if (track->cenc.aes_ctr) {
2801  ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);
2802  }
2803  if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {
2804  mov_preroll_write_stbl_atoms(pb, track);
2805  }
2806  return update_size(pb, pos);
2807 }
2808 
2809 static int mov_write_dinf_tag(AVIOContext *pb)
2810 {
2811  int64_t pos = avio_tell(pb);
2812  avio_wb32(pb, 0); /* size */
2813  ffio_wfourcc(pb, "dinf");
2814  mov_write_dref_tag(pb);
2815  return update_size(pb, pos);
2816 }
2817 
2818 static int mov_write_nmhd_tag(AVIOContext *pb)
2819 {
2820  avio_wb32(pb, 12);
2821  ffio_wfourcc(pb, "nmhd");
2822  avio_wb32(pb, 0);
2823  return 12;
2824 }
2825 
2826 static int mov_write_sthd_tag(AVIOContext *pb)
2827 {
2828  avio_wb32(pb, 12);
2829  ffio_wfourcc(pb, "sthd");
2830  avio_wb32(pb, 0);
2831  return 12;
2832 }
2833 
2834 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
2835 {
2836  int64_t pos = avio_tell(pb);
2837  const char *font = "Lucida Grande";
2838  avio_wb32(pb, 0); /* size */
2839  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
2840  avio_wb32(pb, 0); /* version & flags */
2841  avio_wb16(pb, 0); /* text font */
2842  avio_wb16(pb, 0); /* text face */
2843  avio_wb16(pb, 12); /* text size */
2844  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
2845  avio_wb16(pb, 0x0000); /* text color (red) */
2846  avio_wb16(pb, 0x0000); /* text color (green) */
2847  avio_wb16(pb, 0x0000); /* text color (blue) */
2848  avio_wb16(pb, 0xffff); /* background color (red) */
2849  avio_wb16(pb, 0xffff); /* background color (green) */
2850  avio_wb16(pb, 0xffff); /* background color (blue) */
2851  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
2852  avio_write(pb, font, strlen(font)); /* font name */
2853  return update_size(pb, pos);
2854 }
2855 
2856 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
2857 {
2858  int64_t pos = avio_tell(pb);
2859  avio_wb32(pb, 0); /* size */
2860  ffio_wfourcc(pb, "gmhd");
2861  avio_wb32(pb, 0x18); /* gmin size */
2862  ffio_wfourcc(pb, "gmin");/* generic media info */
2863  avio_wb32(pb, 0); /* version & flags */
2864  avio_wb16(pb, 0x40); /* graphics mode = */
2865  avio_wb16(pb, 0x8000); /* opColor (r?) */
2866  avio_wb16(pb, 0x8000); /* opColor (g?) */
2867  avio_wb16(pb, 0x8000); /* opColor (b?) */
2868  avio_wb16(pb, 0); /* balance */
2869  avio_wb16(pb, 0); /* reserved */
2870 
2871  /*
2872  * This special text atom is required for
2873  * Apple Quicktime chapters. The contents
2874  * don't appear to be documented, so the
2875  * bytes are copied verbatim.
2876  */
2877  if (track->tag != MKTAG('c','6','0','8')) {
2878  avio_wb32(pb, 0x2C); /* size */
2879  ffio_wfourcc(pb, "text");
2880  avio_wb16(pb, 0x01);
2881  avio_wb32(pb, 0x00);
2882  avio_wb32(pb, 0x00);
2883  avio_wb32(pb, 0x00);
2884  avio_wb32(pb, 0x01);
2885  avio_wb32(pb, 0x00);
2886  avio_wb32(pb, 0x00);
2887  avio_wb32(pb, 0x00);
2888  avio_wb32(pb, 0x00004000);
2889  avio_wb16(pb, 0x0000);
2890  }
2891 
2892  if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2893  int64_t tmcd_pos = avio_tell(pb);
2894  avio_wb32(pb, 0); /* size */
2895  ffio_wfourcc(pb, "tmcd");
2896  mov_write_tcmi_tag(pb, track);
2897  update_size(pb, tmcd_pos);
2898  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2899  int64_t gpmd_pos = avio_tell(pb);
2900  avio_wb32(pb, 0); /* size */
2901  ffio_wfourcc(pb, "gpmd");
2902  avio_wb32(pb, 0); /* version */
2903  update_size(pb, gpmd_pos);
2904  }
2905  return update_size(pb, pos);
2906 }
2907 
2908 static int mov_write_smhd_tag(AVIOContext *pb)
2909 {
2910  avio_wb32(pb, 16); /* size */
2911  ffio_wfourcc(pb, "smhd");
2912  avio_wb32(pb, 0); /* version & flags */
2913  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
2914  avio_wb16(pb, 0); /* reserved */
2915  return 16;
2916 }
2917 
2918 static int mov_write_vmhd_tag(AVIOContext *pb)
2919 {
2920  avio_wb32(pb, 0x14); /* size (always 0x14) */
2921  ffio_wfourcc(pb, "vmhd");
2922  avio_wb32(pb, 0x01); /* version & flags */
2923  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
2924  return 0x14;
2925 }
2926 
2927 static int is_clcp_track(MOVTrack *track)
2928 {
2929  return track->tag == MKTAG('c','7','0','8') ||
2930  track->tag == MKTAG('c','6','0','8');
2931 }
2932 
2933 static int mov_write_hdlr_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2934 {
2935  MOVMuxContext *mov = s->priv_data;
2936  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
2937  int64_t pos = avio_tell(pb);
2938  size_t descr_len;
2939 
2940  hdlr = "dhlr";
2941  hdlr_type = "url ";
2942  descr = "DataHandler";
2943 
2944  if (track) {
2945  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
2946  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
2947  if (track->mode == MODE_AVIF) {
2948  hdlr_type = (track == &mov->tracks[0]) ? "pict" : "auxv";
2949  descr = "PictureHandler";
2950  } else {
2951  hdlr_type = "vide";
2952  descr = "VideoHandler";
2953  }
2954  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
2955  hdlr_type = "soun";
2956  descr = "SoundHandler";
2957  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2958  if (is_clcp_track(track)) {
2959  hdlr_type = "clcp";
2960  descr = "ClosedCaptionHandler";
2961  } else {
2962  if (track->tag == MKTAG('t','x','3','g')) {
2963  hdlr_type = "sbtl";
2964  } else if (track->tag == MKTAG('m','p','4','s')) {
2965  hdlr_type = "subp";
2966  } else if (track->tag == MOV_MP4_TTML_TAG) {
2967  hdlr_type = "subt";
2968  } else {
2969  hdlr_type = "text";
2970  }
2971  descr = "SubtitleHandler";
2972  }
2973  } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
2974  hdlr_type = "hint";
2975  descr = "HintHandler";
2976  } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2977  hdlr_type = "tmcd";
2978  descr = "TimeCodeHandler";
2979  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2980  hdlr_type = "meta";
2981  descr = "GoPro MET"; // GoPro Metadata
2982  } else {
2983  av_log(s, AV_LOG_WARNING,
2984  "Unknown hdlr_type for %s, writing dummy values\n",
2985  av_fourcc2str(track->par->codec_tag));
2986  }
2987  if (track->st) {
2988  // hdlr.name is used by some players to identify the content title
2989  // of the track. So if an alternate handler description is
2990  // specified, use it.
2991  AVDictionaryEntry *t;
2992  t = av_dict_get(track->st->metadata, "handler_name", NULL, 0);
2993  if (t && utf8len(t->value))
2994  descr = t->value;
2995  }
2996  }
2997 
2998  if (mov->empty_hdlr_name) /* expressly allowed by QTFF and not prohibited in ISO 14496-12 8.4.3.3 */
2999  descr = "";
3000 
3001  avio_wb32(pb, 0); /* size */
3002  ffio_wfourcc(pb, "hdlr");
3003  avio_wb32(pb, 0); /* Version & flags */
3004  avio_write(pb, hdlr, 4); /* handler */
3005  ffio_wfourcc(pb, hdlr_type); /* handler type */
3006  avio_wb32(pb, 0); /* reserved */
3007  avio_wb32(pb, 0); /* reserved */
3008  avio_wb32(pb, 0); /* reserved */
3009  descr_len = strlen(descr);
3010  if (!track || track->mode == MODE_MOV)
3011  avio_w8(pb, descr_len); /* pascal string */
3012  avio_write(pb, descr, descr_len); /* handler description */
3013  if (track && track->mode != MODE_MOV)
3014  avio_w8(pb, 0); /* c string */
3015  return update_size(pb, pos);
3016 }
3017 
3018 static int mov_write_pitm_tag(AVIOContext *pb, int item_id)
3019 {
3020  int64_t pos = avio_tell(pb);
3021  avio_wb32(pb, 0); /* size */
3022  ffio_wfourcc(pb, "pitm");
3023  avio_wb32(pb, 0); /* Version & flags */
3024  avio_wb16(pb, item_id); /* item_id */
3025  return update_size(pb, pos);
3026 }
3027 
3028 static int mov_write_iloc_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3029 {
3030  int64_t pos = avio_tell(pb);
3031  avio_wb32(pb, 0); /* size */
3032  ffio_wfourcc(pb, "iloc");
3033  avio_wb32(pb, 0); /* Version & flags */
3034  avio_w8(pb, (4 << 4) + 4); /* offset_size(4) and length_size(4) */
3035  avio_w8(pb, 0); /* base_offset_size(4) and reserved(4) */
3036  avio_wb16(pb, s->nb_streams); /* item_count */
3037 
3038  for (int i = 0; i < s->nb_streams; i++) {
3039  avio_wb16(pb, i + 1); /* item_id */
3040  avio_wb16(pb, 0); /* data_reference_index */
3041  avio_wb16(pb, 1); /* extent_count */
3042  mov->avif_extent_pos[i] = avio_tell(pb);
3043  avio_wb32(pb, 0); /* extent_offset (written later) */
3044  // For animated AVIF, we simply write the first packet's size.
3045  avio_wb32(pb, mov->avif_extent_length[i]); /* extent_length */
3046  }
3047 
3048  return update_size(pb, pos);
3049 }
3050 
3051 static int mov_write_iinf_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3052 {
3053  int64_t iinf_pos = avio_tell(pb);
3054  avio_wb32(pb, 0); /* size */
3055  ffio_wfourcc(pb, "iinf");
3056  avio_wb32(pb, 0); /* Version & flags */
3057  avio_wb16(pb, s->nb_streams); /* entry_count */
3058 
3059  for (int i = 0; i < s->nb_streams; i++) {
3060  int64_t infe_pos = avio_tell(pb);
3061  avio_wb32(pb, 0); /* size */
3062  ffio_wfourcc(pb, "infe");
3063  avio_w8(pb, 0x2); /* Version */
3064  avio_wb24(pb, 0); /* flags */
3065  avio_wb16(pb, i + 1); /* item_id */
3066  avio_wb16(pb, 0); /* item_protection_index */
3067  avio_write(pb, "av01", 4); /* item_type */
3068  avio_write(pb, !i ? "Color\0" : "Alpha\0", 6); /* item_name */
3069  update_size(pb, infe_pos);
3070  }
3071 
3072  return update_size(pb, iinf_pos);
3073 }
3074 
3075 
3076 static int mov_write_iref_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3077 {
3078  int64_t auxl_pos;
3079  int64_t iref_pos = avio_tell(pb);
3080  avio_wb32(pb, 0); /* size */
3081  ffio_wfourcc(pb, "iref");
3082  avio_wb32(pb, 0); /* Version & flags */
3083 
3084  auxl_pos = avio_tell(pb);
3085  avio_wb32(pb, 0); /* size */
3086  ffio_wfourcc(pb, "auxl");
3087  avio_wb16(pb, 2); /* from_item_ID */
3088  avio_wb16(pb, 1); /* reference_count */
3089  avio_wb16(pb, 1); /* to_item_ID */
3090  update_size(pb, auxl_pos);
3091 
3092  return update_size(pb, iref_pos);
3093 }
3094 
3095 static int mov_write_ispe_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3096  int stream_index)
3097 {
3098  int64_t pos = avio_tell(pb);
3099  avio_wb32(pb, 0); /* size */
3100  ffio_wfourcc(pb, "ispe");
3101  avio_wb32(pb, 0); /* Version & flags */
3102  avio_wb32(pb, s->streams[stream_index]->codecpar->width); /* image_width */
3103  avio_wb32(pb, s->streams[stream_index]->codecpar->height); /* image_height */
3104  return update_size(pb, pos);
3105 }
3106 
3107 static int mov_write_pixi_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3108  int stream_index)
3109 {
3110  int64_t pos = avio_tell(pb);
3111  const AVPixFmtDescriptor *pixdesc =
3112  av_pix_fmt_desc_get(s->streams[stream_index]->codecpar->format);
3113  avio_wb32(pb, 0); /* size */
3114  ffio_wfourcc(pb, "pixi");
3115  avio_wb32(pb, 0); /* Version & flags */
3116  avio_w8(pb, pixdesc->nb_components); /* num_channels */
3117  for (int i = 0; i < pixdesc->nb_components; ++i) {
3118  avio_w8(pb, pixdesc->comp[i].depth); /* bits_per_channel */
3119  }
3120  return update_size(pb, pos);
3121 }
3122 
3123 static int mov_write_ipco_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3124 {
3125  int64_t pos = avio_tell(pb);
3126  avio_wb32(pb, 0); /* size */
3127  ffio_wfourcc(pb, "ipco");
3128  for (int i = 0; i < s->nb_streams; i++) {
3129  mov_write_ispe_tag(pb, mov, s, i);
3130  mov_write_pixi_tag(pb, mov, s, i);
3131  mov_write_av1c_tag(pb, &mov->tracks[i]);
3132  if (!i)
3133  mov_write_colr_tag(pb, &mov->tracks[0], 0);
3134  else
3135  mov_write_aux_tag(pb, "auxC");
3136  }
3137  return update_size(pb, pos);
3138 }
3139 
3140 static int mov_write_ipma_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3141 {
3142  int64_t pos = avio_tell(pb);
3143  avio_wb32(pb, 0); /* size */
3144  ffio_wfourcc(pb, "ipma");
3145  avio_wb32(pb, 0); /* Version & flags */
3146  avio_wb32(pb, s->nb_streams); /* entry_count */
3147 
3148  for (int i = 0, index = 1; i < s->nb_streams; i++) {
3149  avio_wb16(pb, i + 1); /* item_ID */
3150  avio_w8(pb, 4); /* association_count */
3151 
3152  // ispe association.
3153  avio_w8(pb, index++); /* essential and property_index */
3154  // pixi association.
3155  avio_w8(pb, index++); /* essential and property_index */
3156  // av1C association.
3157  avio_w8(pb, 0x80 | index++); /* essential and property_index */
3158  // colr/auxC association.
3159  avio_w8(pb, index++); /* essential and property_index */
3160  }
3161  return update_size(pb, pos);
3162 }
3163 
3164 static int mov_write_iprp_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3165 {
3166  int64_t pos = avio_tell(pb);
3167  avio_wb32(pb, 0); /* size */
3168  ffio_wfourcc(pb, "iprp");
3169  mov_write_ipco_tag(pb, mov, s);
3170  mov_write_ipma_tag(pb, mov, s);
3171  return update_size(pb, pos);
3172 }
3173 
3174 static int mov_write_hmhd_tag(AVIOContext *pb)
3175 {
3176  /* This atom must be present, but leaving the values at zero
3177  * seems harmless. */
3178  avio_wb32(pb, 28); /* size */
3179  ffio_wfourcc(pb, "hmhd");
3180  avio_wb32(pb, 0); /* version, flags */
3181  avio_wb16(pb, 0); /* maxPDUsize */
3182  avio_wb16(pb, 0); /* avgPDUsize */
3183  avio_wb32(pb, 0); /* maxbitrate */
3184  avio_wb32(pb, 0); /* avgbitrate */
3185  avio_wb32(pb, 0); /* reserved */
3186  return 28;
3187 }
3188 
3189 static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
3190 {
3191  int64_t pos = avio_tell(pb);
3192  int ret;
3193 
3194  avio_wb32(pb, 0); /* size */
3195  ffio_wfourcc(pb, "minf");
3196  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
3197  mov_write_vmhd_tag(pb);
3198  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3199  mov_write_smhd_tag(pb);
3200  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3201  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
3202  mov_write_gmhd_tag(pb, track);
3203  } else if (track->tag == MOV_MP4_TTML_TAG) {
3204  mov_write_sthd_tag(pb);
3205  } else {
3206  mov_write_nmhd_tag(pb);
3207  }
3208  } else if (track->tag == MKTAG('r','t','p',' ')) {
3209  mov_write_hmhd_tag(pb);
3210  } else if (track->tag == MKTAG('t','m','c','d')) {
3211  if (track->mode != MODE_MOV)
3212  mov_write_nmhd_tag(pb);
3213  else
3214  mov_write_gmhd_tag(pb, track);
3215  } else if (track->tag == MKTAG('g','p','m','d')) {
3216  mov_write_gmhd_tag(pb, track);
3217  }
3218  if (track->mode == MODE_MOV) /* ISO 14496-12 8.4.3.1 specifies hdlr only within mdia or meta boxes */
3219  mov_write_hdlr_tag(s, pb, NULL);
3220  mov_write_dinf_tag(pb);
3221  if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
3222  return ret;
3223  return update_size(pb, pos);
3224 }
3225 
3226 static void get_pts_range(MOVMuxContext *mov, MOVTrack *track,
3227  int64_t *start, int64_t *end)
3228 {
3229  if (track->tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd) {
3230  // tmcd tracks gets track_duration set in mov_write_moov_tag from
3231  // another track's duration, while the end_pts may be left at zero.
3232  // Calculate the pts duration for that track instead.
3233  get_pts_range(mov, &mov->tracks[track->src_track], start, end);
3234  *start = av_rescale(*start, track->timescale,
3235  mov->tracks[track->src_track].timescale);
3236  *end = av_rescale(*end, track->timescale,
3237  mov->tracks[track->src_track].timescale);
3238  return;
3239  }
3240  if (track->end_pts != AV_NOPTS_VALUE &&
3241  track->start_dts != AV_NOPTS_VALUE &&
3242  track->start_cts != AV_NOPTS_VALUE) {
3243  *start = track->start_dts + track->start_cts;
3244  *end = track->end_pts;
3245  return;
3246  }
3247  *start = 0;
3248  *end = track->track_duration;
3249 }
3250 
3251 static int64_t calc_samples_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3252 {
3253  int64_t start, end;
3254  get_pts_range(mov, track, &start, &end);
3255  return end - start;
3256 }
3257 
3258 // Calculate the actual duration of the track, after edits.
3259 // If it starts with a pts < 0, that is removed by the edit list.
3260 // If it starts with a pts > 0, the edit list adds a delay before that.
3261 // Thus, with edit lists enabled, the post-edit output of the file is
3262 // starting with pts=0.
3263 static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3264 {
3265  int64_t start, end;
3266  get_pts_range(mov, track, &start, &end);
3267  if (mov->use_editlist != 0)
3268  start = 0;
3269  return end - start;
3270 }
3271 
3272 static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3273  MOVTrack *track)
3274 {
3275  int64_t duration = calc_samples_pts_duration(mov, track);
3276  int version = duration < INT32_MAX ? 0 : 1;
3277 
3278  if (track->mode == MODE_ISM)
3279  version = 1;
3280 
3281  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
3282  ffio_wfourcc(pb, "mdhd");
3283  avio_w8(pb, version);
3284  avio_wb24(pb, 0); /* flags */
3285  if (version == 1) {
3286  avio_wb64(pb, track->time);
3287  avio_wb64(pb, track->time);
3288  } else {
3289  avio_wb32(pb, track->time); /* creation time */
3290  avio_wb32(pb, track->time); /* modification time */
3291  }
3292  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
3293  if (!track->entry && mov->mode == MODE_ISM)
3294  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3295  else if (!track->entry)
3296  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3297  else
3298  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration); /* duration */
3299  avio_wb16(pb, track->language); /* language */
3300  avio_wb16(pb, 0); /* reserved (quality) */
3301 
3302  if (version != 0 && track->mode == MODE_MOV) {
3303  av_log(NULL, AV_LOG_ERROR,
3304  "FATAL error, file duration too long for timebase, this file will not be\n"
3305  "playable with QuickTime. Choose a different timebase with "
3306  "-video_track_timescale or a different container format\n");
3307  }
3308 
3309  return 32;
3310 }
3311 
3312 static int mov_write_mdia_tag(AVFormatContext *s, AVIOContext *pb,
3313  MOVMuxContext *mov, MOVTrack *track)
3314 {
3315  int64_t pos = avio_tell(pb);
3316  int ret;
3317 
3318  avio_wb32(pb, 0); /* size */
3319  ffio_wfourcc(pb, "mdia");
3320  mov_write_mdhd_tag(pb, mov, track);
3321  mov_write_hdlr_tag(s, pb, track);
3322  if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)
3323  return ret;
3324  return update_size(pb, pos);
3325 }
3326 
3327 /* transformation matrix
3328  |a b u|
3329  |c d v|
3330  |tx ty w| */
3331 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
3332  int16_t d, int16_t tx, int16_t ty)
3333 {
3334  avio_wb32(pb, a << 16); /* 16.16 format */
3335  avio_wb32(pb, b << 16); /* 16.16 format */
3336  avio_wb32(pb, 0); /* u in 2.30 format */
3337  avio_wb32(pb, c << 16); /* 16.16 format */
3338  avio_wb32(pb, d << 16); /* 16.16 format */
3339  avio_wb32(pb, 0); /* v in 2.30 format */
3340  avio_wb32(pb, tx << 16); /* 16.16 format */
3341  avio_wb32(pb, ty << 16); /* 16.16 format */
3342  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
3343 }
3344 
3345 static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3346  MOVTrack *track, AVStream *st)
3347 {
3348  int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
3349  mov->movie_timescale, track->timescale,
3350  AV_ROUND_UP);
3351  int version;
3352  int flags = MOV_TKHD_FLAG_IN_MOVIE;
3353  int group = 0;
3354 
3355  uint32_t *display_matrix = NULL;
3356  size_t display_matrix_size;
3357  int i;
3358 
3359  if (mov->mode == MODE_AVIF)
3360  if (!mov->avif_loop_count)
3361  duration = INT64_MAX;
3362  else
3363  duration *= mov->avif_loop_count;
3364 
3365  version = duration < INT32_MAX ? 0 : 1;
3366 
3367  if (st) {
3368  if (mov->per_stream_grouping)
3369  group = st->index;
3370  else
3371  group = st->codecpar->codec_type;
3372 
3373  display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
3374  &display_matrix_size);
3375  if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
3376  display_matrix = NULL;
3377  }
3378 
3379  if (track->flags & MOV_TRACK_ENABLED)
3380  flags |= MOV_TKHD_FLAG_ENABLED;
3381 
3382  if (track->mode == MODE_ISM)
3383  version = 1;
3384 
3385  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
3386  ffio_wfourcc(pb, "tkhd");
3387  avio_w8(pb, version);
3388  avio_wb24(pb, flags);
3389  if (version == 1) {
3390  avio_wb64(pb, track->time);
3391  avio_wb64(pb, track->time);
3392  } else {
3393  avio_wb32(pb, track->time); /* creation time */
3394  avio_wb32(pb, track->time); /* modification time */
3395  }
3396  avio_wb32(pb, track->track_id); /* track-id */
3397  avio_wb32(pb, 0); /* reserved */
3398  if (!track->entry && mov->mode == MODE_ISM)
3399  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3400  else if (!track->entry)
3401  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3402  else
3403  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
3404 
3405  avio_wb32(pb, 0); /* reserved */
3406  avio_wb32(pb, 0); /* reserved */
3407  avio_wb16(pb, 0); /* layer */
3408  avio_wb16(pb, group); /* alternate group) */
3409  /* Volume, only for audio */
3410  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3411  avio_wb16(pb, 0x0100);
3412  else
3413  avio_wb16(pb, 0);
3414  avio_wb16(pb, 0); /* reserved */
3415 
3416  /* Matrix structure */
3417  if (display_matrix) {
3418  for (i = 0; i < 9; i++)
3419  avio_wb32(pb, display_matrix[i]);
3420  } else {
3421  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3422  }
3423  /* Track width and height, for visual only */
3424  if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
3425  track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
3426  int64_t track_width_1616;
3427  if (track->mode == MODE_MOV || track->mode == MODE_AVIF) {
3428  track_width_1616 = track->par->width * 0x10000ULL;
3429  } else {
3430  track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
3431  track->par->width * 0x10000LL,
3432  st->sample_aspect_ratio.den);
3433  if (!track_width_1616 ||
3434  track->height != track->par->height ||
3435  track_width_1616 > UINT32_MAX)
3436  track_width_1616 = track->par->width * 0x10000ULL;
3437  }
3438  if (track_width_1616 > UINT32_MAX) {
3439  av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
3440  track_width_1616 = 0;
3441  }
3442  avio_wb32(pb, track_width_1616);
3443  if (track->height > 0xFFFF) {
3444  av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
3445  avio_wb32(pb, 0);
3446  } else
3447  avio_wb32(pb, track->height * 0x10000U);
3448  } else {
3449  avio_wb32(pb, 0);
3450  avio_wb32(pb, 0);
3451  }
3452  return 0x5c;
3453 }
3454 
3455 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
3456 {
3457  int32_t width = av_rescale(track->par->sample_aspect_ratio.num, track->par->width,
3458  track->par->sample_aspect_ratio.den);
3459 
3460  int64_t pos = avio_tell(pb);
3461 
3462  avio_wb32(pb, 0); /* size */
3463  ffio_wfourcc(pb, "tapt");
3464 
3465  avio_wb32(pb, 20);
3466  ffio_wfourcc(pb, "clef");
3467  avio_wb32(pb, 0);
3468  avio_wb32(pb, width << 16);
3469  avio_wb32(pb, track->par->height << 16);
3470 
3471  avio_wb32(pb, 20);
3472  ffio_wfourcc(pb, "prof");
3473  avio_wb32(pb, 0);
3474  avio_wb32(pb, width << 16);
3475  avio_wb32(pb, track->par->height << 16);
3476 
3477  avio_wb32(pb, 20);
3478  ffio_wfourcc(pb, "enof");
3479  avio_wb32(pb, 0);
3480  avio_wb32(pb, track->par->width << 16);
3481  avio_wb32(pb, track->par->height << 16);
3482 
3483  return update_size(pb, pos);
3484 }
3485 
3486 // This box is written in the following cases:
3487 // * Seems important for the psp playback. Without it the movie seems to hang.
3488 // * Used for specifying the looping behavior of animated AVIF (as specified
3489 // in Section 9.6 of the HEIF specification ISO/IEC 23008-12).
3490 static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
3491  MOVTrack *track)
3492 {
3493  int64_t duration = av_rescale_rnd(calc_samples_pts_duration(mov, track),
3494  mov->movie_timescale, track->timescale,
3495  AV_ROUND_UP);
3496  int version = duration < INT32_MAX ? 0 : 1;
3497  int entry_size, entry_count, size;
3498  int64_t delay, start_ct = track->start_cts;
3499  int64_t start_dts = track->start_dts;
3500  int flags = 0;
3501 
3502  if (track->entry) {
3503  if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {
3504 
3505  av_log(mov->fc, AV_LOG_DEBUG,
3506  "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",
3507  track->cluster[0].dts, track->cluster[0].cts,
3508  start_dts, start_ct, track->track_id);
3509  start_dts = track->cluster[0].dts;
3510  start_ct = track->cluster[0].cts;
3511  }
3512  }
3513 
3514  delay = av_rescale_rnd(start_dts + start_ct, mov->movie_timescale,
3515  track->timescale, AV_ROUND_DOWN);
3516 
3517  if (mov->mode == MODE_AVIF) {
3518  delay = 0;
3519  // Section 9.6.3 of ISO/IEC 23008-12: flags specifies repetition of the
3520  // edit list as follows: (flags & 1) equal to 0 specifies that the edit
3521  // list is not repeated, while (flags & 1) equal to 1 specifies that the
3522  // edit list is repeated.
3523  flags = mov->avif_loop_count != 1;
3524  start_ct = 0;
3525  }
3526 
3527  version |= delay < INT32_MAX ? 0 : 1;
3528 
3529  entry_size = (version == 1) ? 20 : 12;
3530  entry_count = 1 + (delay > 0);
3531  size = 24 + entry_count * entry_size;
3532 
3533  /* write the atom data */
3534  avio_wb32(pb, size);
3535  ffio_wfourcc(pb, "edts");
3536  avio_wb32(pb, size - 8);
3537  ffio_wfourcc(pb, "elst");
3538  avio_w8(pb, version);
3539  avio_wb24(pb, flags); /* flags */
3540 
3541  avio_wb32(pb, entry_count);
3542  if (delay > 0) { /* add an empty edit to delay presentation */
3543  /* In the positive delay case, the delay includes the cts
3544  * offset, and the second edit list entry below trims out
3545  * the same amount from the actual content. This makes sure
3546  * that the offset last sample is included in the edit
3547  * list duration as well. */
3548  if (version == 1) {
3549  avio_wb64(pb, delay);
3550  avio_wb64(pb, -1);
3551  } else {
3552  avio_wb32(pb, delay);
3553  avio_wb32(pb, -1);
3554  }
3555  avio_wb32(pb, 0x00010000);
3556  } else if (mov->mode != MODE_AVIF) {
3557  /* Avoid accidentally ending up with start_ct = -1 which has got a
3558  * special meaning. Normally start_ct should end up positive or zero
3559  * here, but use FFMIN in case dts is a small positive integer
3560  * rounded to 0 when represented in movie timescale units. */
3561  av_assert0(av_rescale_rnd(start_dts, mov->movie_timescale, track->timescale, AV_ROUND_DOWN) <= 0);
3562  start_ct = -FFMIN(start_dts, 0);
3563  /* Note, this delay is calculated from the pts of the first sample,
3564  * ensuring that we don't reduce the duration for cases with
3565  * dts<0 pts=0. */
3566  duration += delay;
3567  }
3568 
3569  /* For fragmented files, we don't know the full length yet. Setting
3570  * duration to 0 allows us to only specify the offset, including
3571  * the rest of the content (from all future fragments) without specifying
3572  * an explicit duration. */
3573  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
3574  duration = 0;
3575 
3576  /* duration */
3577  if (version == 1) {
3578  avio_wb64(pb, duration);
3579  avio_wb64(pb, start_ct);
3580  } else {
3581  avio_wb32(pb, duration);
3582  avio_wb32(pb, start_ct);
3583  }
3584  avio_wb32(pb, 0x00010000);
3585  return size;
3586 }
3587 
3588 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
3589 {
3590  avio_wb32(pb, 20); // size
3591  ffio_wfourcc(pb, "tref");
3592  avio_wb32(pb, 12); // size (subatom)
3593  avio_wl32(pb, track->tref_tag);
3594  avio_wb32(pb, track->tref_id);
3595  return 20;
3596 }
3597 
3598 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
3599 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
3600 {
3601  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
3602  ffio_wfourcc(pb, "uuid");
3603  ffio_wfourcc(pb, "USMT");
3604  avio_wb32(pb, 0x21d24fce);
3605  avio_wb32(pb, 0xbb88695c);
3606  avio_wb32(pb, 0xfac9c740);
3607  avio_wb32(pb, 0x1c); // another size here!
3608  ffio_wfourcc(pb, "MTDT");
3609  avio_wb32(pb, 0x00010012);
3610  avio_wb32(pb, 0x0a);
3611  avio_wb32(pb, 0x55c40000);
3612  avio_wb32(pb, 0x1);
3613  avio_wb32(pb, 0x0);
3614  return 0x34;
3615 }
3616 
3617 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
3618 {
3619  AVFormatContext *ctx = track->rtp_ctx;
3620  char buf[1000] = "";
3621  int len;
3622 
3623  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
3624  NULL, NULL, 0, 0, ctx);
3625  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
3626  len = strlen(buf);
3627 
3628  avio_wb32(pb, len + 24);
3629  ffio_wfourcc(pb, "udta");
3630  avio_wb32(pb, len + 16);
3631  ffio_wfourcc(pb, "hnti");
3632  avio_wb32(pb, len + 8);
3633  ffio_wfourcc(pb, "sdp ");
3634  avio_write(pb, buf, len);
3635  return len + 24;
3636 }
3637 
3638 static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,
3639  const char *tag, const char *str)
3640 {
3641  int64_t pos = avio_tell(pb);
3642  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
3643  if (!t || !utf8len(t->value))
3644  return 0;
3645 
3646  avio_wb32(pb, 0); /* size */
3647  ffio_wfourcc(pb, tag); /* type */
3648  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
3649  return update_size(pb, pos);
3650 }
3651 
3652 static int mov_write_track_kind(AVIOContext *pb, const char *scheme_uri,
3653  const char *value)
3654 {
3655  int64_t pos = avio_tell(pb);
3656 
3657  /* Box|FullBox basics */
3658  avio_wb32(pb, 0); /* size placeholder */
3659  ffio_wfourcc(pb, (const unsigned char *)"kind");
3660  avio_w8(pb, 0); /* version = 0 */
3661  avio_wb24(pb, 0); /* flags = 0 */
3662 
3663  /* Required null-terminated scheme URI */
3664  avio_write(pb, (const unsigned char *)scheme_uri,
3665  strlen(scheme_uri));
3666  avio_w8(pb, 0);
3667 
3668  /* Optional value string */
3669  if (value && value[0])
3670  avio_write(pb, (const unsigned char *)value,
3671  strlen(value));
3672 
3673  avio_w8(pb, 0);
3674 
3675  return update_size(pb, pos);
3676 }
3677 
3678 static int mov_write_track_kinds(AVIOContext *pb, AVStream *st)
3679 {
3680  int ret = AVERROR_BUG;
3681 
3682  for (int i = 0; ff_mov_track_kind_table[i].scheme_uri; i++) {
3683  const struct MP4TrackKindMapping map = ff_mov_track_kind_table[i];
3684 
3685  for (int j = 0; map.value_maps[j].disposition; j++) {
3686  const struct MP4TrackKindValueMapping value_map = map.value_maps[j];
3687  if (!(st->disposition & value_map.disposition))
3688  continue;
3689 
3690  if ((ret = mov_write_track_kind(pb, map.scheme_uri, value_map.value)) < 0)
3691  return ret;
3692  }
3693  }
3694 
3695  return 0;
3696 }
3697 
3698 static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
3699  AVStream *st)
3700 {
3701  AVIOContext *pb_buf;
3702  int ret, size;
3703  uint8_t *buf;
3704 
3705  if (!st)
3706  return 0;
3707 
3708  ret = avio_open_dyn_buf(&pb_buf);
3709  if (ret < 0)
3710  return ret;
3711 
3712  if (mov->mode & (MODE_MP4|MODE_MOV))
3713  mov_write_track_metadata(pb_buf, st, "name", "title");
3714 
3715  if (mov->mode & MODE_MP4) {
3716  if ((ret = mov_write_track_kinds(pb_buf, st)) < 0)
3717  return ret;
3718  }
3719 
3720  if ((size = avio_get_dyn_buf(pb_buf, &buf)) > 0) {
3721  avio_wb32(pb, size + 8);
3722  ffio_wfourcc(pb, "udta");
3723  avio_write(pb, buf, size);
3724  }
3725  ffio_free_dyn_buf(&pb_buf);
3726 
3727  return 0;
3728 }
3729 
3730 static int mov_write_trak_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov,
3731  MOVTrack *track, AVStream *st)
3732 {
3733  int64_t pos = avio_tell(pb);
3734  int entry_backup = track->entry;
3735  int chunk_backup = track->chunkCount;
3736  int ret;
3737 
3738  /* If we want to have an empty moov, but some samples already have been
3739  * buffered (delay_moov), pretend that no samples have been written yet. */
3740  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
3741  track->chunkCount = track->entry = 0;
3742 
3743  avio_wb32(pb, 0); /* size */
3744  ffio_wfourcc(pb, "trak");
3745  mov_write_tkhd_tag(pb, mov, track, st);
3746 
3747  av_assert2(mov->use_editlist >= 0);
3748 
3749  if (track->start_dts != AV_NOPTS_VALUE) {
3750  if (mov->use_editlist)
3751  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
3752  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
3753  av_log(mov->fc, AV_LOG_WARNING,
3754  "Not writing any edit list even though one would have been required\n");
3755  }
3756 
3757  if (mov->is_animated_avif)
3758  mov_write_edts_tag(pb, mov, track);
3759 
3760  if (track->tref_tag)
3761  mov_write_tref_tag(pb, track);
3762 
3763  if ((ret = mov_write_mdia_tag(s, pb, mov, track)) < 0)
3764  return ret;
3765  if (track->mode == MODE_PSP)
3766  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
3767  if (track->tag == MKTAG('r','t','p',' '))
3768  mov_write_udta_sdp(pb, track);
3769  if (track->mode == MODE_MOV) {
3770  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3771  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
3772  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
3773  mov_write_tapt_tag(pb, track);
3774  }
3775  }
3776  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
3777  mov_write_tapt_tag(pb, track);
3778  }
3779  }
3780  mov_write_track_udta_tag(pb, mov, st);
3781  track->entry = entry_backup;
3782  track->chunkCount = chunk_backup;
3783  return update_size(pb, pos);
3784 }
3785 
3786 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
3787 {
3788  int i, has_audio = 0, has_video = 0;
3789  int64_t pos = avio_tell(pb);
3790  int audio_profile = mov->iods_audio_profile;
3791  int video_profile = mov->iods_video_profile;
3792  for (i = 0; i < mov->nb_streams; i++) {
3793  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3794  has_audio |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_AUDIO;
3795  has_video |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_VIDEO;
3796  }
3797  }
3798  if (audio_profile < 0)
3799  audio_profile = 0xFF - has_audio;
3800  if (video_profile < 0)
3801  video_profile = 0xFF - has_video;
3802  avio_wb32(pb, 0x0); /* size */
3803  ffio_wfourcc(pb, "iods");
3804  avio_wb32(pb, 0); /* version & flags */
3805  put_descr(pb, 0x10, 7);
3806  avio_wb16(pb, 0x004f);
3807  avio_w8(pb, 0xff);
3808  avio_w8(pb, 0xff);
3809  avio_w8(pb, audio_profile);
3810  avio_w8(pb, video_profile);
3811  avio_w8(pb, 0xff);
3812  return update_size(pb, pos);
3813 }
3814 
3815 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
3816 {
3817  avio_wb32(pb, 0x20); /* size */
3818  ffio_wfourcc(pb, "trex");
3819  avio_wb32(pb, 0); /* version & flags */
3820  avio_wb32(pb, track->track_id); /* track ID */
3821  avio_wb32(pb, 1); /* default sample description index */
3822  avio_wb32(pb, 0); /* default sample duration */
3823  avio_wb32(pb, 0); /* default sample size */
3824  avio_wb32(pb, 0); /* default sample flags */
3825  return 0;
3826 }
3827 
3828 static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
3829 {
3830  int64_t pos = avio_tell(pb);
3831  int i;
3832  avio_wb32(pb, 0x0); /* size */
3833  ffio_wfourcc(pb, "mvex");
3834  for (i = 0; i < mov->nb_streams; i++)
3835  mov_write_trex_tag(pb, &mov->tracks[i]);
3836  return update_size(pb, pos);
3837 }
3838 
3839 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
3840 {
3841  int max_track_id = 1, i;
3842  int64_t max_track_len = 0;
3843  int version;
3844  int timescale;
3845 
3846  for (i = 0; i < mov->nb_streams; i++) {
3847  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
3848  int64_t max_track_len_temp = av_rescale_rnd(
3849  calc_pts_duration(mov, &mov->tracks[i]),
3850  mov->movie_timescale,
3851  mov->tracks[i].timescale,
3852  AV_ROUND_UP);
3853  if (max_track_len < max_track_len_temp)
3854  max_track_len = max_track_len_temp;
3855  if (max_track_id < mov->tracks[i].track_id)
3856  max_track_id = mov->tracks[i].track_id;
3857  }
3858  }
3859  /* If using delay_moov, make sure the output is the same as if no
3860  * samples had been written yet. */
3861  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3862  max_track_len = 0;
3863  max_track_id = 1;
3864  }
3865 
3866  version = max_track_len < UINT32_MAX ? 0 : 1;
3867  avio_wb32(pb, version == 1 ? 120 : 108); /* size */
3868 
3869  ffio_wfourcc(pb, "mvhd");
3870  avio_w8(pb, version);
3871  avio_wb24(pb, 0); /* flags */
3872  if (version == 1) {
3873  avio_wb64(pb, mov->time);
3874  avio_wb64(pb, mov->time);
3875  } else {
3876  avio_wb32(pb, mov->time); /* creation time */
3877  avio_wb32(pb, mov->time); /* modification time */
3878  }
3879 
3880  timescale = mov->movie_timescale;
3881  if (mov->mode == MODE_AVIF && !timescale)
3882  timescale = mov->tracks[0].timescale;
3883 
3884  avio_wb32(pb, timescale);
3885  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
3886 
3887  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
3888  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
3889  ffio_fill(pb, 0, 2 + 2 * 4); /* reserved */
3890 
3891  /* Matrix structure */
3892  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3893 
3894  avio_wb32(pb, 0); /* reserved (preview time) */
3895  avio_wb32(pb, 0); /* reserved (preview duration) */
3896  avio_wb32(pb, 0); /* reserved (poster time) */
3897  avio_wb32(pb, 0); /* reserved (selection time) */
3898  avio_wb32(pb, 0); /* reserved (selection duration) */
3899  avio_wb32(pb, 0); /* reserved (current time) */
3900  avio_wb32(pb, max_track_id + 1); /* Next track id */
3901  return 0x6c;
3902 }
3903 
3904 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
3905  AVFormatContext *s)
3906 {
3907  avio_wb32(pb, 33); /* size */
3908  ffio_wfourcc(pb, "hdlr");
3909  avio_wb32(pb, 0);
3910  avio_wb32(pb, 0);
3911  ffio_wfourcc(pb, "mdir");
3912  ffio_wfourcc(pb, "appl");
3913  avio_wb32(pb, 0);
3914  avio_wb32(pb, 0);
3915  avio_w8(pb, 0);
3916  return 33;
3917 }
3918 
3919 /* helper function to write a data tag with the specified string as data */
3920 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
3921 {
3922  size_t data_len = strlen(data);
3923  if (long_style) {
3924  int size = 16 + data_len;
3925  avio_wb32(pb, size); /* size */
3926  ffio_wfourcc(pb, "data");
3927  avio_wb32(pb, 1);
3928  avio_wb32(pb, 0);
3929  avio_write(pb, data, data_len);
3930  return size;
3931  } else {
3932  avio_wb16(pb, data_len); /* string length */
3933  if (!lang)
3934  lang = ff_mov_iso639_to_lang("und", 1);
3935  avio_wb16(pb, lang);
3936  avio_write(pb, data, data_len);
3937  return data_len + 4;
3938  }
3939 }
3940 
3941 static int mov_write_string_tag(AVIOContext *pb, const char *name,
3942  const char *value, int lang, int long_style)
3943 {
3944  int size = 0;
3945  if (value && value[0]) {
3946  int64_t pos = avio_tell(pb);
3947  avio_wb32(pb, 0); /* size */
3948  ffio_wfourcc(pb, name);
3949  mov_write_string_data_tag(pb, value, lang, long_style);
3950  size = update_size(pb, pos);
3951  }
3952  return size;
3953 }
3954 
3955 static AVDictionaryEntry *get_metadata_lang(AVFormatContext *s,
3956  const char *tag, int *lang)
3957 {
3958  int l, len, len2;
3959  AVDictionaryEntry *t, *t2 = NULL;
3960  char tag2[16];
3961 
3962  *lang = 0;
3963 
3964  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3965  return NULL;
3966 
3967  len = strlen(t->key);
3968  snprintf(tag2, sizeof(tag2), "%s-", tag);
3969  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
3970  len2 = strlen(t2->key);
3971  if (len2 == len + 4 && !strcmp(t->value, t2->value)
3972  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
3973  *lang = l;
3974  return t;
3975  }
3976  }
3977  return t;
3978 }
3979 
3980 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
3981  const char *name, const char *tag,
3982  int long_style)
3983 {
3984  int lang;
3985  AVDictionaryEntry *t = get_metadata_lang(s, tag, &lang);
3986  if (!t)
3987  return 0;
3988  return mov_write_string_tag(pb, name, t->value, lang, long_style);
3989 }
3990 
3991 /* iTunes bpm number */
3992 static int mov_write_tmpo_tag(AVIOContext *pb, AVFormatContext *s)
3993 {
3994  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
3995  int size = 0, tmpo = t ? atoi(t->value) : 0;
3996  if (tmpo) {
3997  size = 26;
3998  avio_wb32(pb, size);
3999  ffio_wfourcc(pb, "tmpo");
4000  avio_wb32(pb, size-8); /* size */
4001  ffio_wfourcc(pb, "data");
4002  avio_wb32(pb, 0x15); //type specifier
4003  avio_wb32(pb, 0);
4004  avio_wb16(pb, tmpo); // data
4005  }
4006  return size;
4007 }
4008 
4009 /* 3GPP TS 26.244 */
4010 static int mov_write_loci_tag(AVFormatContext *s, AVIOContext *pb)
4011 {
4012  int lang;
4013  int64_t pos = avio_tell(pb);
4014  double latitude, longitude, altitude;
4015  int32_t latitude_fix, longitude_fix, altitude_fix;
4016  AVDictionaryEntry *t = get_metadata_lang(s, "location", &lang);
4017  const char *ptr, *place = "";
4018  char *end;
4019  static const char *astronomical_body = "earth";
4020  if (!t)
4021  return 0;
4022 
4023  ptr = t->value;
4024  longitude = strtod(ptr, &end);
4025  if (end == ptr) {
4026  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
4027  return 0;
4028  }
4029  ptr = end;
4030  latitude = strtod(ptr, &end);
4031  if (end == ptr) {
4032  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
4033  return 0;
4034  }
4035  ptr = end;
4036  altitude = strtod(ptr, &end);
4037  /* If no altitude was present, the default 0 should be fine */
4038  if (*end == '/')
4039  place = end + 1;
4040 
4041  latitude_fix = (int32_t) ((1 << 16) * latitude);
4042  longitude_fix = (int32_t) ((1 << 16) * longitude);
4043  altitude_fix = (int32_t) ((1 << 16) * altitude);
4044 
4045  avio_wb32(pb, 0); /* size */
4046  ffio_wfourcc(pb, "loci"); /* type */
4047  avio_wb32(pb, 0); /* version + flags */
4048  avio_wb16(pb, lang);
4049  avio_write(pb, place, strlen(place) + 1);
4050  avio_w8(pb, 0); /* role of place (0 == shooting location, 1 == real location, 2 == fictional location) */
4051  avio_wb32(pb, latitude_fix);
4052  avio_wb32(pb, longitude_fix);
4053  avio_wb32(pb, altitude_fix);
4054  avio_write(pb, astronomical_body, strlen(astronomical_body) + 1);
4055  avio_w8(pb, 0); /* additional notes, null terminated string */
4056 
4057  return update_size(pb, pos);
4058 }
4059 
4060 /* iTunes track or disc number */
4061 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
4062  AVFormatContext *s, int disc)
4063 {
4064  AVDictionaryEntry *t = av_dict_get(s->metadata,
4065  disc ? "disc" : "track",
4066  NULL, 0);
4067  int size = 0, track = t ? atoi(t->value) : 0;
4068  if (track) {
4069  int tracks = 0;
4070  char *slash = strchr(t->value, '/');
4071  if (slash)
4072  tracks = atoi(slash + 1);
4073  avio_wb32(pb, 32); /* size */
4074  ffio_wfourcc(pb, disc ? "disk" : "trkn");
4075  avio_wb32(pb, 24); /* size */
4076  ffio_wfourcc(pb, "data");
4077  avio_wb32(pb, 0); // 8 bytes empty
4078  avio_wb32(pb, 0);
4079  avio_wb16(pb, 0); // empty
4080  avio_wb16(pb, track); // track / disc number
4081  avio_wb16(pb, tracks); // total track / disc number
4082  avio_wb16(pb, 0); // empty
4083  size = 32;
4084  }
4085  return size;
4086 }
4087 
4088 static int mov_write_int8_metadata(AVFormatContext *s, AVIOContext *pb,
4089  const char *name, const char *tag,
4090  int len)
4091 {
4092  AVDictionaryEntry *t = NULL;
4093  uint8_t num;
4094  int size = 24 + len;
4095 
4096  if (len != 1 && len != 4)
4097  return -1;
4098 
4099  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
4100  return 0;
4101  num = atoi(t->value);
4102 
4103  avio_wb32(pb, size);
4104  ffio_wfourcc(pb, name);
4105  avio_wb32(pb, size - 8);
4106  ffio_wfourcc(pb, "data");
4107  avio_wb32(pb, 0x15);
4108  avio_wb32(pb, 0);
4109  if (len==4) avio_wb32(pb, num);
4110  else avio_w8 (pb, num);
4111 
4112  return size;
4113 }
4114 
4115 static int mov_write_covr(AVIOContext *pb, AVFormatContext *s)
4116 {
4117  MOVMuxContext *mov = s->priv_data;
4118  int64_t pos = 0;
4119  int i;
4120 
4121  for (i = 0; i < s->nb_streams; i++) {
4122  MOVTrack *trk = &mov->tracks[i];
4123 
4124  if (!is_cover_image(trk->st) || trk->cover_image->size <= 0)
4125  continue;
4126 
4127  if (!pos) {
4128  pos = avio_tell(pb);
4129  avio_wb32(pb, 0);
4130  ffio_wfourcc(pb, "covr");
4131  }
4132  avio_wb32(pb, 16 + trk->cover_image->size);
4133  ffio_wfourcc(pb, "data");
4134  avio_wb32(pb, trk->tag);
4135  avio_wb32(pb , 0);
4136  avio_write(pb, trk->cover_image->data, trk->cover_image->size);
4137  }
4138 
4139  return pos ? update_size(pb, pos) : 0;
4140 }
4141 
4142 /* iTunes meta data list */
4143 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
4144  AVFormatContext *s)
4145 {
4146  int64_t pos = avio_tell(pb);
4147  avio_wb32(pb, 0); /* size */
4148  ffio_wfourcc(pb, "ilst");
4149  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
4150  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
4151  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
4152  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
4153  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
4154  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
4155  if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {
4156  if (!(s->flags & AVFMT_FLAG_BITEXACT))
4157  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
4158  }
4159  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
4160  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
4161  mov_write_string_metadata(s, pb, "cprt", "copyright", 1);
4162  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
4163  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
4164  mov_write_string_metadata(s, pb, "desc", "description",1);
4165  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
4166  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
4167  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
4168  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
4169  mov_write_string_metadata(s, pb, "keyw", "keywords" , 1);
4170  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
4171  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
4172  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
4173  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
4174  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
4175  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
4176  mov_write_covr(pb, s);
4177  mov_write_trkn_tag(pb, mov, s, 0); // track number
4178  mov_write_trkn_tag(pb, mov, s, 1); // disc number
4179  mov_write_tmpo_tag(pb, s);
4180  return update_size(pb, pos);
4181 }
4182 
4183 static int mov_write_mdta_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
4184  AVFormatContext *s)
4185 {
4186  avio_wb32(pb, 33); /* size */
4187  ffio_wfourcc(pb, "hdlr");
4188  avio_wb32(pb, 0);
4189  avio_wb32(pb, 0);
4190  ffio_wfourcc(pb, "mdta");
4191  avio_wb32(pb, 0);
4192  avio_wb32(pb, 0);
4193  avio_wb32(pb, 0);
4194  avio_w8(pb, 0);
4195  return 33;
4196 }
4197 
4198 static int mov_write_mdta_keys_tag(AVIOContext *pb, MOVMuxContext *mov,
4199  AVFormatContext *s)
4200 {
4201  const AVDictionaryEntry *t = NULL;
4202  int64_t pos = avio_tell(pb);
4203  int64_t curpos, entry_pos;
4204  int count = 0;
4205 
4206  avio_wb32(pb, 0); /* size */
4207  ffio_wfourcc(pb, "keys");
4208  avio_wb32(pb, 0);
4209  entry_pos = avio_tell(pb);
4210  avio_wb32(pb, 0); /* entry count */
4211 
4212  while (t = av_dict_iterate(s->metadata, t)) {
4213  size_t key_len = strlen(t->key);
4214  avio_wb32(pb, key_len + 8);
4215  ffio_wfourcc(pb, "mdta");
4216  avio_write(pb, t->key, key_len);
4217  count += 1;
4218  }
4219  curpos = avio_tell(pb);
4220  avio_seek(pb, entry_pos, SEEK_SET);
4221  avio_wb32(pb, count); // rewrite entry count
4222  avio_seek(pb, curpos, SEEK_SET);
4223 
4224  return update_size(pb, pos);
4225 }
4226 
4227 static int mov_write_mdta_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
4228  AVFormatContext *s)
4229 {
4230  <