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_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
1183 {
1184  int64_t pos = avio_tell(pb);
1185  int version = 0;
1186  uint32_t tag = track->tag;
1187  int ret = 0;
1188 
1189  if (track->mode == MODE_MOV) {
1190  if (track->timescale > UINT16_MAX || !track->par->ch_layout.nb_channels) {
1191  if (mov_get_lpcm_flags(track->par->codec_id))
1192  tag = AV_RL32("lpcm");
1193  version = 2;
1194  } else if (track->audio_vbr || mov_pcm_le_gt16(track->par->codec_id) ||
1195  mov_pcm_be_gt16(track->par->codec_id) ||
1196  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1197  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1198  track->par->codec_id == AV_CODEC_ID_QDM2) {
1199  version = 1;
1200  }
1201  }
1202 
1203  avio_wb32(pb, 0); /* size */
1204  if (mov->encryption_scheme != MOV_ENC_NONE) {
1205  ffio_wfourcc(pb, "enca");
1206  } else {
1207  avio_wl32(pb, tag); // store it byteswapped
1208  }
1209  avio_wb32(pb, 0); /* Reserved */
1210  avio_wb16(pb, 0); /* Reserved */
1211  avio_wb16(pb, 1); /* Data-reference index, XXX == 1 */
1212 
1213  /* SoundDescription */
1214  avio_wb16(pb, version); /* Version */
1215  avio_wb16(pb, 0); /* Revision level */
1216  avio_wb32(pb, 0); /* Reserved */
1217 
1218  if (version == 2) {
1219  avio_wb16(pb, 3);
1220  avio_wb16(pb, 16);
1221  avio_wb16(pb, 0xfffe);
1222  avio_wb16(pb, 0);
1223  avio_wb32(pb, 0x00010000);
1224  avio_wb32(pb, 72);
1225  avio_wb64(pb, av_double2int(track->par->sample_rate));
1226  avio_wb32(pb, track->par->ch_layout.nb_channels);
1227  avio_wb32(pb, 0x7F000000);
1228  avio_wb32(pb, av_get_bits_per_sample(track->par->codec_id));
1229  avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
1230  avio_wb32(pb, track->sample_size);
1231  avio_wb32(pb, get_samples_per_packet(track));
1232  } else {
1233  if (track->mode == MODE_MOV) {
1234  avio_wb16(pb, track->par->ch_layout.nb_channels);
1235  if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
1236  track->par->codec_id == AV_CODEC_ID_PCM_S8)
1237  avio_wb16(pb, 8); /* bits per sample */
1238  else if (track->par->codec_id == AV_CODEC_ID_ADPCM_G726)
1239  avio_wb16(pb, track->par->bits_per_coded_sample);
1240  else
1241  avio_wb16(pb, 16);
1242  avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
1243  } else { /* reserved for mp4/3gp */
1244  avio_wb16(pb, track->par->ch_layout.nb_channels);
1245  if (track->par->codec_id == AV_CODEC_ID_FLAC ||
1246  track->par->codec_id == AV_CODEC_ID_ALAC) {
1247  avio_wb16(pb, track->par->bits_per_raw_sample);
1248  } else {
1249  avio_wb16(pb, 16);
1250  }
1251  avio_wb16(pb, 0);
1252  }
1253 
1254  avio_wb16(pb, 0); /* packet size (= 0) */
1255  if (track->par->codec_id == AV_CODEC_ID_OPUS)
1256  avio_wb16(pb, 48000);
1257  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1258  avio_wb32(pb, track->par->sample_rate);
1259  else
1260  avio_wb16(pb, track->par->sample_rate <= UINT16_MAX ?
1261  track->par->sample_rate : 0);
1262 
1263  if (track->par->codec_id != AV_CODEC_ID_TRUEHD)
1264  avio_wb16(pb, 0); /* Reserved */
1265  }
1266 
1267  if (version == 1) { /* SoundDescription V1 extended info */
1268  if (mov_pcm_le_gt16(track->par->codec_id) ||
1269  mov_pcm_be_gt16(track->par->codec_id))
1270  avio_wb32(pb, 1); /* must be 1 for uncompressed formats */
1271  else
1272  avio_wb32(pb, track->par->frame_size); /* Samples per packet */
1273  avio_wb32(pb, track->sample_size / track->par->ch_layout.nb_channels); /* Bytes per packet */
1274  avio_wb32(pb, track->sample_size); /* Bytes per frame */
1275  avio_wb32(pb, 2); /* Bytes per sample */
1276  }
1277 
1278  if (track->mode == MODE_MOV &&
1279  (track->par->codec_id == AV_CODEC_ID_AAC ||
1280  track->par->codec_id == AV_CODEC_ID_AC3 ||
1281  track->par->codec_id == AV_CODEC_ID_EAC3 ||
1282  track->par->codec_id == AV_CODEC_ID_AMR_NB ||
1283  track->par->codec_id == AV_CODEC_ID_ALAC ||
1284  track->par->codec_id == AV_CODEC_ID_ADPCM_MS ||
1285  track->par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
1286  track->par->codec_id == AV_CODEC_ID_QDM2 ||
1287  (mov_pcm_le_gt16(track->par->codec_id) && version==1) ||
1288  (mov_pcm_be_gt16(track->par->codec_id) && version==1)))
1289  ret = mov_write_wave_tag(s, pb, track);
1290  else if (track->tag == MKTAG('m','p','4','a'))
1291  ret = mov_write_esds_tag(pb, track);
1292  else if (track->par->codec_id == AV_CODEC_ID_AMR_NB)
1293  ret = mov_write_amr_tag(pb, track);
1294  else if (track->par->codec_id == AV_CODEC_ID_AC3)
1295  ret = mov_write_ac3_tag(s, pb, track);
1296  else if (track->par->codec_id == AV_CODEC_ID_EAC3)
1297  ret = mov_write_eac3_tag(s, pb, track);
1298  else if (track->par->codec_id == AV_CODEC_ID_ALAC)
1299  ret = mov_write_extradata_tag(pb, track);
1300  else if (track->par->codec_id == AV_CODEC_ID_WMAPRO)
1301  ret = mov_write_wfex_tag(s, pb, track);
1302  else if (track->par->codec_id == AV_CODEC_ID_FLAC)
1303  ret = mov_write_dfla_tag(pb, track);
1304  else if (track->par->codec_id == AV_CODEC_ID_OPUS)
1305  ret = mov_write_dops_tag(s, pb, track);
1306  else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
1307  ret = mov_write_dmlp_tag(s, pb, track);
1308  else if (track->vos_len > 0)
1309  ret = mov_write_glbl_tag(pb, track);
1310 
1311  if (ret < 0)
1312  return ret;
1313 
1314  if (track->mode == MODE_MOV && track->par->codec_type == AVMEDIA_TYPE_AUDIO
1315  && ((ret = mov_write_chan_tag(s, pb, track)) < 0)) {
1316  return ret;
1317  }
1318 
1319  if (mov->encryption_scheme != MOV_ENC_NONE
1320  && ((ret = ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid)) < 0)) {
1321  return ret;
1322  }
1323 
1324  if (mov->write_btrt &&
1325  ((ret = mov_write_btrt_tag(pb, track)) < 0))
1326  return ret;
1327 
1328  ret = update_size(pb, pos);
1329  return ret;
1330 }
1331 
1332 static int mov_write_d263_tag(AVIOContext *pb)
1333 {
1334  avio_wb32(pb, 0xf); /* size */
1335  ffio_wfourcc(pb, "d263");
1336  ffio_wfourcc(pb, "FFMP");
1337  avio_w8(pb, 0); /* decoder version */
1338  /* FIXME use AVCodecContext level/profile, when encoder will set values */
1339  avio_w8(pb, 0xa); /* level */
1340  avio_w8(pb, 0); /* profile */
1341  return 0xf;
1342 }
1343 
1344 static int mov_write_av1c_tag(AVIOContext *pb, MOVTrack *track)
1345 {
1346  int64_t pos = avio_tell(pb);
1347 
1348  avio_wb32(pb, 0);
1349  ffio_wfourcc(pb, "av1C");
1350  ff_isom_write_av1c(pb, track->vos_data, track->vos_len, track->mode != MODE_AVIF);
1351  return update_size(pb, pos);
1352 }
1353 
1354 static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track)
1355 {
1356  int64_t pos = avio_tell(pb);
1357 
1358  avio_wb32(pb, 0);
1359  ffio_wfourcc(pb, "avcC");
1360  ff_isom_write_avcc(pb, track->vos_data, track->vos_len);
1361  return update_size(pb, pos);
1362 }
1363 
1364 static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1365 {
1366  int64_t pos = avio_tell(pb);
1367 
1368  avio_wb32(pb, 0);
1369  ffio_wfourcc(pb, "vpcC");
1370  avio_w8(pb, 1); /* version */
1371  avio_wb24(pb, 0); /* flags */
1372  ff_isom_write_vpcc(s, pb, track->vos_data, track->vos_len, track->par);
1373 
1374  return update_size(pb, pos);
1375 }
1376 
1377 static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
1378 {
1379  int64_t pos = avio_tell(pb);
1380 
1381  avio_wb32(pb, 0);
1382  ffio_wfourcc(pb, "hvcC");
1383  if (track->tag == MKTAG('h','v','c','1'))
1384  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 1);
1385  else
1386  ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
1387  return update_size(pb, pos);
1388 }
1389 
1390 /* also used by all avid codecs (dv, imx, meridien) and their variants */
1391 static int mov_write_avid_tag(AVIOContext *pb, MOVTrack *track)
1392 {
1393  int interlaced;
1394  int cid;
1395  int display_width = track->par->width;
1396 
1397  if (track->vos_data && track->vos_len > 0x29) {
1398  if (ff_dnxhd_parse_header_prefix(track->vos_data) != 0) {
1399  /* looks like a DNxHD bit stream */
1400  interlaced = (track->vos_data[5] & 2);
1401  cid = AV_RB32(track->vos_data + 0x28);
1402  } else {
1403  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream in vos_data\n");
1404  return 0;
1405  }
1406  } else {
1407  av_log(NULL, AV_LOG_WARNING, "Could not locate DNxHD bit stream, vos_data too small\n");
1408  return 0;
1409  }
1410 
1411  avio_wb32(pb, 24); /* size */
1412  ffio_wfourcc(pb, "ACLR");
1413  ffio_wfourcc(pb, "ACLR");
1414  ffio_wfourcc(pb, "0001");
1415  if (track->par->color_range == AVCOL_RANGE_MPEG || /* Legal range (16-235) */
1416  track->par->color_range == AVCOL_RANGE_UNSPECIFIED) {
1417  avio_wb32(pb, 1); /* Corresponds to 709 in official encoder */
1418  } else { /* Full range (0-255) */
1419  avio_wb32(pb, 2); /* Corresponds to RGB in official encoder */
1420  }
1421  avio_wb32(pb, 0); /* unknown */
1422 
1423  if (track->tag == MKTAG('A','V','d','h')) {
1424  avio_wb32(pb, 32);
1425  ffio_wfourcc(pb, "ADHR");
1426  ffio_wfourcc(pb, "0001");
1427  avio_wb32(pb, cid);
1428  avio_wb32(pb, 0); /* unknown */
1429  avio_wb32(pb, 1); /* unknown */
1430  avio_wb32(pb, 0); /* unknown */
1431  avio_wb32(pb, 0); /* unknown */
1432  return 0;
1433  }
1434 
1435  avio_wb32(pb, 24); /* size */
1436  ffio_wfourcc(pb, "APRG");
1437  ffio_wfourcc(pb, "APRG");
1438  ffio_wfourcc(pb, "0001");
1439  avio_wb32(pb, 1); /* unknown */
1440  avio_wb32(pb, 0); /* unknown */
1441 
1442  avio_wb32(pb, 120); /* size */
1443  ffio_wfourcc(pb, "ARES");
1444  ffio_wfourcc(pb, "ARES");
1445  ffio_wfourcc(pb, "0001");
1446  avio_wb32(pb, cid); /* dnxhd cid, some id ? */
1447  if ( track->par->sample_aspect_ratio.num > 0
1448  && track->par->sample_aspect_ratio.den > 0)
1449  display_width = display_width * track->par->sample_aspect_ratio.num / track->par->sample_aspect_ratio.den;
1450  avio_wb32(pb, display_width);
1451  /* values below are based on samples created with quicktime and avid codecs */
1452  if (interlaced) {
1453  avio_wb32(pb, track->par->height / 2);
1454  avio_wb32(pb, 2); /* unknown */
1455  avio_wb32(pb, 0); /* unknown */
1456  avio_wb32(pb, 4); /* unknown */
1457  } else {
1458  avio_wb32(pb, track->par->height);
1459  avio_wb32(pb, 1); /* unknown */
1460  avio_wb32(pb, 0); /* unknown */
1461  if (track->par->height == 1080)
1462  avio_wb32(pb, 5); /* unknown */
1463  else
1464  avio_wb32(pb, 6); /* unknown */
1465  }
1466  /* padding */
1467  ffio_fill(pb, 0, 10 * 8);
1468 
1469  return 0;
1470 }
1471 
1472 static int mov_write_dpxe_tag(AVIOContext *pb, MOVTrack *track)
1473 {
1474  avio_wb32(pb, 12);
1475  ffio_wfourcc(pb, "DpxE");
1476  if (track->par->extradata_size >= 12 &&
1477  !memcmp(&track->par->extradata[4], "DpxE", 4)) {
1478  avio_wb32(pb, track->par->extradata[11]);
1479  } else {
1480  avio_wb32(pb, 1);
1481  }
1482  return 0;
1483 }
1484 
1485 static int mov_get_dv_codec_tag(AVFormatContext *s, MOVTrack *track)
1486 {
1487  int tag;
1488 
1489  if (track->par->width == 720) { /* SD */
1490  if (track->par->height == 480) { /* NTSC */
1491  if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','n');
1492  else tag = MKTAG('d','v','c',' ');
1493  }else if (track->par->format == AV_PIX_FMT_YUV422P) tag = MKTAG('d','v','5','p');
1494  else if (track->par->format == AV_PIX_FMT_YUV420P) tag = MKTAG('d','v','c','p');
1495  else tag = MKTAG('d','v','p','p');
1496  } else if (track->par->height == 720) { /* HD 720 line */
1497  if (track->st->time_base.den == 50) tag = MKTAG('d','v','h','q');
1498  else tag = MKTAG('d','v','h','p');
1499  } else if (track->par->height == 1080) { /* HD 1080 line */
1500  if (track->st->time_base.den == 25) tag = MKTAG('d','v','h','5');
1501  else tag = MKTAG('d','v','h','6');
1502  } else {
1503  av_log(s, AV_LOG_ERROR, "unsupported height for dv codec\n");
1504  return 0;
1505  }
1506 
1507  return tag;
1508 }
1509 
1510 static int defined_frame_rate(AVFormatContext *s, AVStream *st)
1511 {
1512  AVRational rational_framerate = st->avg_frame_rate;
1513  int rate = 0;
1514  if (rational_framerate.den != 0)
1515  rate = av_q2d(rational_framerate);
1516  return rate;
1517 }
1518 
1519 static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
1520 {
1521  int tag = track->par->codec_tag;
1522  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1523  AVStream *st = track->st;
1524  int rate = defined_frame_rate(s, st);
1525 
1526  if (!tag)
1527  tag = MKTAG('m', '2', 'v', '1'); //fallback tag
1528 
1529  if (track->par->format == AV_PIX_FMT_YUV420P) {
1530  if (track->par->width == 1280 && track->par->height == 720) {
1531  if (!interlaced) {
1532  if (rate == 24) tag = MKTAG('x','d','v','4');
1533  else if (rate == 25) tag = MKTAG('x','d','v','5');
1534  else if (rate == 30) tag = MKTAG('x','d','v','1');
1535  else if (rate == 50) tag = MKTAG('x','d','v','a');
1536  else if (rate == 60) tag = MKTAG('x','d','v','9');
1537  }
1538  } else if (track->par->width == 1440 && track->par->height == 1080) {
1539  if (!interlaced) {
1540  if (rate == 24) tag = MKTAG('x','d','v','6');
1541  else if (rate == 25) tag = MKTAG('x','d','v','7');
1542  else if (rate == 30) tag = MKTAG('x','d','v','8');
1543  } else {
1544  if (rate == 25) tag = MKTAG('x','d','v','3');
1545  else if (rate == 30) tag = MKTAG('x','d','v','2');
1546  }
1547  } else if (track->par->width == 1920 && track->par->height == 1080) {
1548  if (!interlaced) {
1549  if (rate == 24) tag = MKTAG('x','d','v','d');
1550  else if (rate == 25) tag = MKTAG('x','d','v','e');
1551  else if (rate == 30) tag = MKTAG('x','d','v','f');
1552  } else {
1553  if (rate == 25) tag = MKTAG('x','d','v','c');
1554  else if (rate == 30) tag = MKTAG('x','d','v','b');
1555  }
1556  }
1557  } else if (track->par->format == AV_PIX_FMT_YUV422P) {
1558  if (track->par->width == 1280 && track->par->height == 720) {
1559  if (!interlaced) {
1560  if (rate == 24) tag = MKTAG('x','d','5','4');
1561  else if (rate == 25) tag = MKTAG('x','d','5','5');
1562  else if (rate == 30) tag = MKTAG('x','d','5','1');
1563  else if (rate == 50) tag = MKTAG('x','d','5','a');
1564  else if (rate == 60) tag = MKTAG('x','d','5','9');
1565  }
1566  } else if (track->par->width == 1920 && track->par->height == 1080) {
1567  if (!interlaced) {
1568  if (rate == 24) tag = MKTAG('x','d','5','d');
1569  else if (rate == 25) tag = MKTAG('x','d','5','e');
1570  else if (rate == 30) tag = MKTAG('x','d','5','f');
1571  } else {
1572  if (rate == 25) tag = MKTAG('x','d','5','c');
1573  else if (rate == 30) tag = MKTAG('x','d','5','b');
1574  }
1575  }
1576  }
1577 
1578  return tag;
1579 }
1580 
1581 static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
1582 {
1583  int tag = track->par->codec_tag;
1584  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
1585  AVStream *st = track->st;
1586  int rate = defined_frame_rate(s, st);
1587 
1588  if (!tag)
1589  tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag
1590 
1591  if (track->par->format == AV_PIX_FMT_YUV420P10) {
1592  if (track->par->width == 960 && track->par->height == 720) {
1593  if (!interlaced) {
1594  if (rate == 24) tag = MKTAG('a','i','5','p');
1595  else if (rate == 25) tag = MKTAG('a','i','5','q');
1596  else if (rate == 30) tag = MKTAG('a','i','5','p');
1597  else if (rate == 50) tag = MKTAG('a','i','5','q');
1598  else if (rate == 60) tag = MKTAG('a','i','5','p');
1599  }
1600  } else if (track->par->width == 1440 && track->par->height == 1080) {
1601  if (!interlaced) {
1602  if (rate == 24) tag = MKTAG('a','i','5','3');
1603  else if (rate == 25) tag = MKTAG('a','i','5','2');
1604  else if (rate == 30) tag = MKTAG('a','i','5','3');
1605  } else {
1606  if (rate == 50) tag = MKTAG('a','i','5','5');
1607  else if (rate == 60) tag = MKTAG('a','i','5','6');
1608  }
1609  }
1610  } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
1611  if (track->par->width == 1280 && track->par->height == 720) {
1612  if (!interlaced) {
1613  if (rate == 24) tag = MKTAG('a','i','1','p');
1614  else if (rate == 25) tag = MKTAG('a','i','1','q');
1615  else if (rate == 30) tag = MKTAG('a','i','1','p');
1616  else if (rate == 50) tag = MKTAG('a','i','1','q');
1617  else if (rate == 60) tag = MKTAG('a','i','1','p');
1618  }
1619  } else if (track->par->width == 1920 && track->par->height == 1080) {
1620  if (!interlaced) {
1621  if (rate == 24) tag = MKTAG('a','i','1','3');
1622  else if (rate == 25) tag = MKTAG('a','i','1','2');
1623  else if (rate == 30) tag = MKTAG('a','i','1','3');
1624  } else {
1625  if (rate == 25) tag = MKTAG('a','i','1','5');
1626  else if (rate == 50) tag = MKTAG('a','i','1','5');
1627  else if (rate == 60) tag = MKTAG('a','i','1','6');
1628  }
1629  } else if ( track->par->width == 4096 && track->par->height == 2160
1630  || track->par->width == 3840 && track->par->height == 2160
1631  || track->par->width == 2048 && track->par->height == 1080) {
1632  tag = MKTAG('a','i','v','x');
1633  }
1634  }
1635 
1636  return tag;
1637 }
1638 
1639 static const struct {
1640  enum AVPixelFormat pix_fmt;
1641  uint32_t tag;
1642  unsigned bps;
1643 } mov_pix_fmt_tags[] = {
1644  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','2'), 0 },
1645  { AV_PIX_FMT_YUYV422, MKTAG('y','u','v','s'), 0 },
1646  { AV_PIX_FMT_UYVY422, MKTAG('2','v','u','y'), 0 },
1647  { AV_PIX_FMT_RGB555BE,MKTAG('r','a','w',' '), 16 },
1648  { AV_PIX_FMT_RGB555LE,MKTAG('L','5','5','5'), 16 },
1649  { AV_PIX_FMT_RGB565LE,MKTAG('L','5','6','5'), 16 },
1650  { AV_PIX_FMT_RGB565BE,MKTAG('B','5','6','5'), 16 },
1651  { AV_PIX_FMT_GRAY16BE,MKTAG('b','1','6','g'), 16 },
1652  { AV_PIX_FMT_RGB24, MKTAG('r','a','w',' '), 24 },
1653  { AV_PIX_FMT_BGR24, MKTAG('2','4','B','G'), 24 },
1654  { AV_PIX_FMT_ARGB, MKTAG('r','a','w',' '), 32 },
1655  { AV_PIX_FMT_BGRA, MKTAG('B','G','R','A'), 32 },
1656  { AV_PIX_FMT_RGBA, MKTAG('R','G','B','A'), 32 },
1657  { AV_PIX_FMT_ABGR, MKTAG('A','B','G','R'), 32 },
1658  { AV_PIX_FMT_RGB48BE, MKTAG('b','4','8','r'), 48 },
1659 };
1660 
1661 static int mov_get_dnxhd_codec_tag(AVFormatContext *s, MOVTrack *track)
1662 {
1663  int tag = MKTAG('A','V','d','n');
1664  if (track->par->profile != FF_PROFILE_UNKNOWN &&
1665  track->par->profile != FF_PROFILE_DNXHD)
1666  tag = MKTAG('A','V','d','h');
1667  return tag;
1668 }
1669 
1670 static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
1671 {
1672  int tag = track->par->codec_tag;
1673  int i;
1674  enum AVPixelFormat pix_fmt;
1675 
1676  for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
1677  if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
1678  tag = mov_pix_fmt_tags[i].tag;
1679  track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
1680  if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
1681  break;
1682  }
1683  }
1684 
1685  pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_MOV,
1686  track->par->bits_per_coded_sample);
1687  if (tag == MKTAG('r','a','w',' ') &&
1688  track->par->format != pix_fmt &&
1689  track->par->format != AV_PIX_FMT_GRAY8 &&
1690  track->par->format != AV_PIX_FMT_NONE)
1691  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
1692  av_get_pix_fmt_name(track->par->format));
1693  return tag;
1694 }
1695 
1696 static unsigned int mov_get_codec_tag(AVFormatContext *s, MOVTrack *track)
1697 {
1698  unsigned int tag = track->par->codec_tag;
1699 
1700  // "rtp " is used to distinguish internally created RTP-hint tracks
1701  // (with rtp_ctx) from other tracks.
1702  if (tag == MKTAG('r','t','p',' '))
1703  tag = 0;
1704  if (!tag || (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&
1705  (track->par->codec_id == AV_CODEC_ID_DVVIDEO ||
1706  track->par->codec_id == AV_CODEC_ID_RAWVIDEO ||
1707  track->par->codec_id == AV_CODEC_ID_H263 ||
1708  track->par->codec_id == AV_CODEC_ID_H264 ||
1709  track->par->codec_id == AV_CODEC_ID_DNXHD ||
1710  track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
1711  av_get_bits_per_sample(track->par->codec_id)))) { // pcm audio
1712  if (track->par->codec_id == AV_CODEC_ID_DVVIDEO)
1713  tag = mov_get_dv_codec_tag(s, track);
1714  else if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO)
1715  tag = mov_get_rawvideo_codec_tag(s, track);
1716  else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO)
1717  tag = mov_get_mpeg2_xdcam_codec_tag(s, track);
1718  else if (track->par->codec_id == AV_CODEC_ID_H264)
1719  tag = mov_get_h264_codec_tag(s, track);
1720  else if (track->par->codec_id == AV_CODEC_ID_DNXHD)
1721  tag = mov_get_dnxhd_codec_tag(s, track);
1722  else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
1723  tag = ff_codec_get_tag(ff_codec_movvideo_tags, track->par->codec_id);
1724  if (!tag) { // if no mac fcc found, try with Microsoft tags
1725  tag = ff_codec_get_tag(ff_codec_bmp_tags, track->par->codec_id);
1726  if (tag)
1727  av_log(s, AV_LOG_WARNING, "Using MS style video codec tag, "
1728  "the file may be unplayable!\n");
1729  }
1730  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
1731  tag = ff_codec_get_tag(ff_codec_movaudio_tags, track->par->codec_id);
1732  if (!tag) { // if no mac fcc found, try with Microsoft tags
1733  int ms_tag = ff_codec_get_tag(ff_codec_wav_tags, track->par->codec_id);
1734  if (ms_tag) {
1735  tag = MKTAG('m', 's', ((ms_tag >> 8) & 0xff), (ms_tag & 0xff));
1736  av_log(s, AV_LOG_WARNING, "Using MS style audio codec tag, "
1737  "the file may be unplayable!\n");
1738  }
1739  }
1740  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
1741  tag = ff_codec_get_tag(ff_codec_movsubtitle_tags, track->par->codec_id);
1742  }
1743 
1744  return tag;
1745 }
1746 
1747 static const AVCodecTag codec_cover_image_tags[] = {
1748  { AV_CODEC_ID_MJPEG, 0xD },
1749  { AV_CODEC_ID_PNG, 0xE },
1750  { AV_CODEC_ID_BMP, 0x1B },
1751  { AV_CODEC_ID_NONE, 0 },
1752 };
1753 
1754 static unsigned int validate_codec_tag(const AVCodecTag *const *tags,
1755  unsigned int tag, int codec_id)
1756 {
1757  int i;
1758 
1759  /**
1760  * Check that tag + id is in the table
1761  */
1762  for (i = 0; tags && tags[i]; i++) {
1763  const AVCodecTag *codec_tags = tags[i];
1764  while (codec_tags->id != AV_CODEC_ID_NONE) {
1765  if (ff_toupper4(codec_tags->tag) == ff_toupper4(tag) &&
1766  codec_tags->id == codec_id)
1767  return codec_tags->tag;
1768  codec_tags++;
1769  }
1770  }
1771  return 0;
1772 }
1773 
1774 static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
1775 {
1776  if (is_cover_image(track->st))
1777  return ff_codec_get_tag(codec_cover_image_tags, track->par->codec_id);
1778 
1779  if (track->mode == MODE_IPOD)
1780  if (!av_match_ext(s->url, "m4a") &&
1781  !av_match_ext(s->url, "m4v") &&
1782  !av_match_ext(s->url, "m4b"))
1783  av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
1784  "Quicktime/Ipod might not play the file\n");
1785 
1786  if (track->mode == MODE_MOV) {
1787  return mov_get_codec_tag(s, track);
1788  } else
1789  return validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
1790  track->par->codec_id);
1791 }
1792 
1793 /** Write uuid atom.
1794  * Needed to make file play in iPods running newest firmware
1795  * goes after avcC atom in moov.trak.mdia.minf.stbl.stsd.avc1
1796  */
1797 static int mov_write_uuid_tag_ipod(AVIOContext *pb)
1798 {
1799  avio_wb32(pb, 28);
1800  ffio_wfourcc(pb, "uuid");
1801  avio_wb32(pb, 0x6b6840f2);
1802  avio_wb32(pb, 0x5f244fc5);
1803  avio_wb32(pb, 0xba39a51b);
1804  avio_wb32(pb, 0xcf0323f3);
1805  avio_wb32(pb, 0x0);
1806  return 28;
1807 }
1808 
1809 static const uint16_t fiel_data[] = {
1810  0x0000, 0x0100, 0x0201, 0x0206, 0x0209, 0x020e
1811 };
1812 
1813 static int mov_write_fiel_tag(AVIOContext *pb, MOVTrack *track, int field_order)
1814 {
1815  unsigned mov_field_order = 0;
1816  if (field_order < FF_ARRAY_ELEMS(fiel_data))
1817  mov_field_order = fiel_data[field_order];
1818  else
1819  return 0;
1820  avio_wb32(pb, 10);
1821  ffio_wfourcc(pb, "fiel");
1822  avio_wb16(pb, mov_field_order);
1823  return 10;
1824 }
1825 
1826 static int mov_write_subtitle_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
1827 {
1828  MOVMuxContext *mov = s->priv_data;
1829  int ret = AVERROR_BUG;
1830  int64_t pos = avio_tell(pb);
1831  avio_wb32(pb, 0); /* size */
1832  avio_wl32(pb, track->tag); // store it byteswapped
1833  avio_wb32(pb, 0); /* Reserved */
1834  avio_wb16(pb, 0); /* Reserved */
1835  avio_wb16(pb, 1); /* Data-reference index */
1836 
1837  if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
1838  mov_write_esds_tag(pb, track);
1839  else if (track->par->codec_id == AV_CODEC_ID_TTML) {
1840  switch (track->par->codec_tag) {
1841  case MOV_ISMV_TTML_TAG:
1842  // ISMV dfxp requires no extradata.
1843  break;
1844  case MOV_MP4_TTML_TAG:
1845  // As specified in 14496-30, XMLSubtitleSampleEntry
1846  // Namespace
1847  avio_put_str(pb, "http://www.w3.org/ns/ttml");
1848  // Empty schema_location
1849  avio_w8(pb, 0);
1850  // Empty auxiliary_mime_types
1851  avio_w8(pb, 0);
1852  break;
1853  default:
1854  av_log(NULL, AV_LOG_ERROR,
1855  "Unknown codec tag '%s' utilized for TTML stream with "
1856  "index %d (track id %d)!\n",
1857  av_fourcc2str(track->par->codec_tag), track->st->index,
1858  track->track_id);
1859  return AVERROR(EINVAL);
1860  }
1861  } else if (track->par->extradata_size)
1862  avio_write(pb, track->par->extradata, track->par->extradata_size);
1863 
1864  if (mov->write_btrt &&
1865  ((ret = mov_write_btrt_tag(pb, track)) < 0))
1866  return ret;
1867 
1868  return update_size(pb, pos);
1869 }
1870 
1871 static int mov_write_st3d_tag(AVFormatContext *s, AVIOContext *pb, AVStereo3D *stereo_3d)
1872 {
1873  int8_t stereo_mode;
1874 
1875  if (stereo_3d->flags != 0) {
1876  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d flags %x. st3d not written.\n", stereo_3d->flags);
1877  return 0;
1878  }
1879 
1880  switch (stereo_3d->type) {
1881  case AV_STEREO3D_2D:
1882  stereo_mode = 0;
1883  break;
1884  case AV_STEREO3D_TOPBOTTOM:
1885  stereo_mode = 1;
1886  break;
1887  case AV_STEREO3D_SIDEBYSIDE:
1888  stereo_mode = 2;
1889  break;
1890  default:
1891  av_log(s, AV_LOG_WARNING, "Unsupported stereo_3d type %s. st3d not written.\n", av_stereo3d_type_name(stereo_3d->type));
1892  return 0;
1893  }
1894  avio_wb32(pb, 13); /* size */
1895  ffio_wfourcc(pb, "st3d");
1896  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1897  avio_w8(pb, stereo_mode);
1898  return 13;
1899 }
1900 
1901 static int mov_write_sv3d_tag(AVFormatContext *s, AVIOContext *pb, AVSphericalMapping *spherical_mapping)
1902 {
1903  int64_t sv3d_pos, svhd_pos, proj_pos;
1904  const char* metadata_source = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : LIBAVFORMAT_IDENT;
1905 
1906  if (spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR &&
1907  spherical_mapping->projection != AV_SPHERICAL_EQUIRECTANGULAR_TILE &&
1908  spherical_mapping->projection != AV_SPHERICAL_CUBEMAP) {
1909  av_log(s, AV_LOG_WARNING, "Unsupported projection %d. sv3d not written.\n", spherical_mapping->projection);
1910  return 0;
1911  }
1912 
1913  sv3d_pos = avio_tell(pb);
1914  avio_wb32(pb, 0); /* size */
1915  ffio_wfourcc(pb, "sv3d");
1916 
1917  svhd_pos = avio_tell(pb);
1918  avio_wb32(pb, 0); /* size */
1919  ffio_wfourcc(pb, "svhd");
1920  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1921  avio_put_str(pb, metadata_source);
1922  update_size(pb, svhd_pos);
1923 
1924  proj_pos = avio_tell(pb);
1925  avio_wb32(pb, 0); /* size */
1926  ffio_wfourcc(pb, "proj");
1927 
1928  avio_wb32(pb, 24); /* size */
1929  ffio_wfourcc(pb, "prhd");
1930  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1931  avio_wb32(pb, spherical_mapping->yaw);
1932  avio_wb32(pb, spherical_mapping->pitch);
1933  avio_wb32(pb, spherical_mapping->roll);
1934 
1935  switch (spherical_mapping->projection) {
1936  case AV_SPHERICAL_EQUIRECTANGULAR:
1937  case AV_SPHERICAL_EQUIRECTANGULAR_TILE:
1938  avio_wb32(pb, 28); /* size */
1939  ffio_wfourcc(pb, "equi");
1940  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1941  avio_wb32(pb, spherical_mapping->bound_top);
1942  avio_wb32(pb, spherical_mapping->bound_bottom);
1943  avio_wb32(pb, spherical_mapping->bound_left);
1944  avio_wb32(pb, spherical_mapping->bound_right);
1945  break;
1946  case AV_SPHERICAL_CUBEMAP:
1947  avio_wb32(pb, 20); /* size */
1948  ffio_wfourcc(pb, "cbmp");
1949  avio_wb32(pb, 0); /* version = 0 & flags = 0 */
1950  avio_wb32(pb, 0); /* layout */
1951  avio_wb32(pb, spherical_mapping->padding); /* padding */
1952  break;
1953  }
1954  update_size(pb, proj_pos);
1955 
1956  return update_size(pb, sv3d_pos);
1957 }
1958 
1959 static int mov_write_dvcc_dvvc_tag(AVFormatContext *s, AVIOContext *pb, AVDOVIDecoderConfigurationRecord *dovi)
1960 {
1961  uint8_t buf[ISOM_DVCC_DVVC_SIZE];
1962 
1963  avio_wb32(pb, 32); /* size = 8 + 24 */
1964  if (dovi->dv_profile > 10)
1965  ffio_wfourcc(pb, "dvwC");
1966  else if (dovi->dv_profile > 7)
1967  ffio_wfourcc(pb, "dvvC");
1968  else
1969  ffio_wfourcc(pb, "dvcC");
1970 
1971  ff_isom_put_dvcc_dvvc(s, buf, dovi);
1972  avio_write(pb, buf, sizeof(buf));
1973 
1974  return 32; /* 8 + 24 */
1975 }
1976 
1977 static int mov_write_clap_tag(AVIOContext *pb, MOVTrack *track)
1978 {
1979  avio_wb32(pb, 40);
1980  ffio_wfourcc(pb, "clap");
1981  avio_wb32(pb, track->par->width); /* apertureWidth_N */
1982  avio_wb32(pb, 1); /* apertureWidth_D (= 1) */
1983  avio_wb32(pb, track->height); /* apertureHeight_N */
1984  avio_wb32(pb, 1); /* apertureHeight_D (= 1) */
1985  avio_wb32(pb, 0); /* horizOff_N (= 0) */
1986  avio_wb32(pb, 1); /* horizOff_D (= 1) */
1987  avio_wb32(pb, 0); /* vertOff_N (= 0) */
1988  avio_wb32(pb, 1); /* vertOff_D (= 1) */
1989  return 40;
1990 }
1991 
1992 static int mov_write_pasp_tag(AVIOContext *pb, MOVTrack *track)
1993 {
1994  AVRational sar;
1995  av_reduce(&sar.num, &sar.den, track->par->sample_aspect_ratio.num,
1996  track->par->sample_aspect_ratio.den, INT_MAX);
1997 
1998  avio_wb32(pb, 16);
1999  ffio_wfourcc(pb, "pasp");
2000  avio_wb32(pb, sar.num);
2001  avio_wb32(pb, sar.den);
2002  return 16;
2003 }
2004 
2005 static int mov_write_gama_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track, double gamma)
2006 {
2007  uint32_t gama = 0;
2008  if (gamma <= 0.0)
2009  gamma = av_csp_approximate_trc_gamma(track->par->color_trc);
2010  av_log(s, AV_LOG_DEBUG, "gamma value %g\n", gamma);
2011 
2012  if (gamma > 1e-6) {
2013  gama = (uint32_t)lrint((double)(1<<16) * gamma);
2014  av_log(s, AV_LOG_DEBUG, "writing gama value %"PRId32"\n", gama);
2015 
2016  av_assert0(track->mode == MODE_MOV);
2017  avio_wb32(pb, 12);
2018  ffio_wfourcc(pb, "gama");
2019  avio_wb32(pb, gama);
2020  return 12;
2021  } else {
2022  av_log(s, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
2023  }
2024  return 0;
2025 }
2026 
2027 static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track, int prefer_icc)
2028 {
2029  int64_t pos = avio_tell(pb);
2030 
2031  // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
2032  // Ref (MP4): ISO/IEC 14496-12:2012
2033 
2034  const uint8_t *icc_profile;
2035  size_t icc_profile_size;
2036 
2037  if (prefer_icc) {
2038  icc_profile = av_stream_get_side_data(track->st, AV_PKT_DATA_ICC_PROFILE, &icc_profile_size);
2039 
2040  if (icc_profile) {
2041  avio_wb32(pb, 12 + icc_profile_size);
2042  ffio_wfourcc(pb, "colr");
2043  ffio_wfourcc(pb, "prof");
2044  avio_write(pb, icc_profile, icc_profile_size);
2045  return 12 + icc_profile_size;
2046  }
2047  else {
2048  av_log(NULL, AV_LOG_INFO, "no ICC profile found, will write nclx/nclc colour info instead\n");
2049  }
2050  }
2051 
2052  /* We should only ever be called for MOV, MP4 and AVIF. */
2053  av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4 ||
2054  track->mode == MODE_AVIF);
2055 
2056  avio_wb32(pb, 0); /* size */
2057  ffio_wfourcc(pb, "colr");
2058  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF)
2059  ffio_wfourcc(pb, "nclx");
2060  else
2061  ffio_wfourcc(pb, "nclc");
2062  // Do not try to guess the color info if it is AVCOL_PRI_UNSPECIFIED.
2063  // e.g., Dolby Vision for Apple devices should be set to AVCOL_PRI_UNSPECIFIED. See
2064  // https://developer.apple.com/av-foundation/High-Dynamic-Range-Metadata-for-Apple-Devices.pdf
2065  avio_wb16(pb, track->par->color_primaries);
2066  avio_wb16(pb, track->par->color_trc);
2067  avio_wb16(pb, track->par->color_space);
2068  if (track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2069  int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
2070  avio_w8(pb, full_range << 7);
2071  }
2072 
2073  return update_size(pb, pos);
2074 }
2075 
2076 static int mov_write_clli_tag(AVIOContext *pb, MOVTrack *track)
2077 {
2078  const uint8_t *side_data;
2079  const AVContentLightMetadata *content_light_metadata;
2080 
2081  side_data = av_stream_get_side_data(track->st, AV_PKT_DATA_CONTENT_LIGHT_LEVEL, NULL);
2082  if (!side_data) {
2083  return 0;
2084  }
2085  content_light_metadata = (const AVContentLightMetadata*)side_data;
2086 
2087  avio_wb32(pb, 12); // size
2088  ffio_wfourcc(pb, "clli");
2089  avio_wb16(pb, content_light_metadata->MaxCLL);
2090  avio_wb16(pb, content_light_metadata->MaxFALL);
2091  return 12;
2092 }
2093 
2094 static inline int64_t rescale_mdcv(AVRational q, int b)
2095 {
2096  return av_rescale(q.num, b, q.den);
2097 }
2098 
2099 static int mov_write_mdcv_tag(AVIOContext *pb, MOVTrack *track)
2100 {
2101  const int chroma_den = 50000;
2102  const int luma_den = 10000;
2103  const uint8_t *side_data;
2104  const AVMasteringDisplayMetadata *metadata;
2105 
2106  side_data = av_stream_get_side_data(track->st, AV_PKT_DATA_MASTERING_DISPLAY_METADATA, NULL);
2107  metadata = (const AVMasteringDisplayMetadata*)side_data;
2108  if (!metadata || !metadata->has_primaries || !metadata->has_luminance) {
2109  return 0;
2110  }
2111 
2112  avio_wb32(pb, 32); // size
2113  ffio_wfourcc(pb, "mdcv");
2114  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[1][0], chroma_den));
2115  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[1][1], chroma_den));
2116  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[2][0], chroma_den));
2117  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[2][1], chroma_den));
2118  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[0][0], chroma_den));
2119  avio_wb16(pb, rescale_mdcv(metadata->display_primaries[0][1], chroma_den));
2120  avio_wb16(pb, rescale_mdcv(metadata->white_point[0], chroma_den));
2121  avio_wb16(pb, rescale_mdcv(metadata->white_point[1], chroma_den));
2122  avio_wb32(pb, rescale_mdcv(metadata->max_luminance, luma_den));
2123  avio_wb32(pb, rescale_mdcv(metadata->min_luminance, luma_den));
2124  return 32;
2125 }
2126 
2127 static void find_compressor(char * compressor_name, int len, MOVTrack *track)
2128 {
2129  AVDictionaryEntry *encoder;
2130  int xdcam_res = (track->par->width == 1280 && track->par->height == 720)
2131  || (track->par->width == 1440 && track->par->height == 1080)
2132  || (track->par->width == 1920 && track->par->height == 1080);
2133 
2134  if ((track->mode == MODE_AVIF ||
2135  track->mode == MODE_MOV ||
2136  track->mode == MODE_MP4) &&
2137  (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
2138  av_strlcpy(compressor_name, encoder->value, 32);
2139  } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
2140  int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
2141  AVStream *st = track->st;
2142  int rate = defined_frame_rate(NULL, st);
2143  av_strlcatf(compressor_name, len, "XDCAM");
2144  if (track->par->format == AV_PIX_FMT_YUV422P) {
2145  av_strlcatf(compressor_name, len, " HD422");
2146  } else if(track->par->width == 1440) {
2147  av_strlcatf(compressor_name, len, " HD");
2148  } else
2149  av_strlcatf(compressor_name, len, " EX");
2150 
2151  av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');
2152 
2153  av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
2154  }
2155 }
2156 
2157 static int mov_write_ccst_tag(AVIOContext *pb)
2158 {
2159  int64_t pos = avio_tell(pb);
2160  // Write sane defaults:
2161  // all_ref_pics_intra = 0 : all samples can use any type of reference.
2162  // intra_pred_used = 1 : intra prediction may or may not be used.
2163  // max_ref_per_pic = 15 : reserved value to indicate that any number of
2164  // reference images can be used.
2165  uint8_t ccstValue = (0 << 7) | /* all_ref_pics_intra */
2166  (1 << 6) | /* intra_pred_used */
2167  (15 << 2); /* max_ref_per_pic */
2168  avio_wb32(pb, 0); /* size */
2169  ffio_wfourcc(pb, "ccst");
2170  avio_wb32(pb, 0); /* Version & flags */
2171  avio_w8(pb, ccstValue);
2172  avio_wb24(pb, 0); /* reserved */
2173  return update_size(pb, pos);
2174 }
2175 
2176 static int mov_write_aux_tag(AVIOContext *pb, const char *aux_type)
2177 {
2178  int64_t pos = avio_tell(pb);
2179  avio_wb32(pb, 0); /* size */
2180  ffio_wfourcc(pb, aux_type);
2181  avio_wb32(pb, 0); /* Version & flags */
2182  avio_write(pb, "urn:mpeg:mpegB:cicp:systems:auxiliary:alpha\0", 44);
2183  return update_size(pb, pos);
2184 }
2185 
2186 static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2187 {
2188  int ret = AVERROR_BUG;
2189  int64_t pos = avio_tell(pb);
2190  char compressor_name[32] = { 0 };
2191  int avid = 0;
2192 
2193  int uncompressed_ycbcr = ((track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_UYVY422)
2194  || (track->par->codec_id == AV_CODEC_ID_RAWVIDEO && track->par->format == AV_PIX_FMT_YUYV422)
2195  || track->par->codec_id == AV_CODEC_ID_V308
2196  || track->par->codec_id == AV_CODEC_ID_V408
2197  || track->par->codec_id == AV_CODEC_ID_V410
2198  || track->par->codec_id == AV_CODEC_ID_V210);
2199 
2200  avio_wb32(pb, 0); /* size */
2201  if (mov->encryption_scheme != MOV_ENC_NONE) {
2202  ffio_wfourcc(pb, "encv");
2203  } else {
2204  avio_wl32(pb, track->tag); // store it byteswapped
2205  }
2206  avio_wb32(pb, 0); /* Reserved */
2207  avio_wb16(pb, 0); /* Reserved */
2208  avio_wb16(pb, 1); /* Data-reference index */
2209 
2210  if (uncompressed_ycbcr) {
2211  avio_wb16(pb, 2); /* Codec stream version */
2212  } else {
2213  avio_wb16(pb, 0); /* Codec stream version */
2214  }
2215  avio_wb16(pb, 0); /* Codec stream revision (=0) */
2216  if (track->mode == MODE_MOV) {
2217  ffio_wfourcc(pb, "FFMP"); /* Vendor */
2218  if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO || uncompressed_ycbcr) {
2219  avio_wb32(pb, 0); /* Temporal Quality */
2220  avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
2221  } else {
2222  avio_wb32(pb, 0x200); /* Temporal Quality = normal */
2223  avio_wb32(pb, 0x200); /* Spatial Quality = normal */
2224  }
2225  } else {
2226  ffio_fill(pb, 0, 3 * 4); /* Reserved */
2227  }
2228  avio_wb16(pb, track->par->width); /* Video width */
2229  avio_wb16(pb, track->height); /* Video height */
2230  avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
2231  avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
2232  avio_wb32(pb, 0); /* Data size (= 0) */
2233  avio_wb16(pb, 1); /* Frame count (= 1) */
2234 
2235  find_compressor(compressor_name, 32, track);
2236  avio_w8(pb, strlen(compressor_name));
2237  avio_write(pb, compressor_name, 31);
2238 
2239  if (track->mode == MODE_MOV &&
2240  (track->par->codec_id == AV_CODEC_ID_V410 || track->par->codec_id == AV_CODEC_ID_V210))
2241  avio_wb16(pb, 0x18);
2242  else if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
2243  avio_wb16(pb, track->par->bits_per_coded_sample |
2244  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
2245  else
2246  avio_wb16(pb, 0x18); /* Reserved */
2247 
2248  if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
2249  int pal_size, i;
2250  avio_wb16(pb, 0); /* Color table ID */
2251  avio_wb32(pb, 0); /* Color table seed */
2252  avio_wb16(pb, 0x8000); /* Color table flags */
2253  if (track->par->bits_per_coded_sample < 0 || track->par->bits_per_coded_sample > 8)
2254  return AVERROR(EINVAL);
2255  pal_size = 1 << track->par->bits_per_coded_sample;
2256  avio_wb16(pb, pal_size - 1); /* Color table size (zero-relative) */
2257  for (i = 0; i < pal_size; i++) {
2258  uint32_t rgb = track->palette[i];
2259  uint16_t r = (rgb >> 16) & 0xff;
2260  uint16_t g = (rgb >> 8) & 0xff;
2261  uint16_t b = rgb & 0xff;
2262  avio_wb16(pb, 0);
2263  avio_wb16(pb, (r << 8) | r);
2264  avio_wb16(pb, (g << 8) | g);
2265  avio_wb16(pb, (b << 8) | b);
2266  }
2267  } else
2268  avio_wb16(pb, 0xffff); /* Reserved */
2269 
2270  if (track->tag == MKTAG('m','p','4','v'))
2271  mov_write_esds_tag(pb, track);
2272  else if (track->par->codec_id == AV_CODEC_ID_H263)
2273  mov_write_d263_tag(pb);
2274  else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
2275  track->par->codec_id == AV_CODEC_ID_SVQ3) {
2276  mov_write_extradata_tag(pb, track);
2277  avio_wb32(pb, 0);
2278  } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
2279  mov_write_avid_tag(pb, track);
2280  avid = 1;
2281  } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
2282  mov_write_hvcc_tag(pb, track);
2283  else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
2284  mov_write_avcc_tag(pb, track);
2285  if (track->mode == MODE_IPOD)
2286  mov_write_uuid_tag_ipod(pb);
2287  } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
2288  mov_write_vpcc_tag(mov->fc, pb, track);
2289  } else if (track->par->codec_id == AV_CODEC_ID_AV1) {
2290  mov_write_av1c_tag(pb, track);
2291  } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
2292  mov_write_dvc1_tag(pb, track);
2293  else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
2294  track->par->codec_id == AV_CODEC_ID_VP6A) {
2295  /* Don't write any potential extradata here - the cropping
2296  * is signalled via the normal width/height fields. */
2297  } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
2298  if (track->par->codec_tag == MKTAG('R','1','0','k'))
2299  mov_write_dpxe_tag(pb, track);
2300  } else if (track->vos_len > 0)
2301  mov_write_glbl_tag(pb, track);
2302 
2303  if (track->par->codec_id != AV_CODEC_ID_H264 &&
2304  track->par->codec_id != AV_CODEC_ID_MPEG4 &&
2305  track->par->codec_id != AV_CODEC_ID_DNXHD) {
2306  int field_order = track->par->field_order;
2307 
2308  if (field_order != AV_FIELD_UNKNOWN)
2309  mov_write_fiel_tag(pb, track, field_order);
2310  }
2311 
2312  if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
2313  if (track->mode == MODE_MOV)
2314  mov_write_gama_tag(s, pb, track, mov->gamma);
2315  else
2316  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
2317  }
2318  if (track->mode == MODE_MOV || track->mode == MODE_MP4 || track->mode == MODE_AVIF) {
2319  int has_color_info = track->par->color_primaries != AVCOL_PRI_UNSPECIFIED &&
2320  track->par->color_trc != AVCOL_TRC_UNSPECIFIED &&
2321  track->par->color_space != AVCOL_SPC_UNSPECIFIED;
2322  if (has_color_info || mov->flags & FF_MOV_FLAG_WRITE_COLR ||
2323  av_stream_get_side_data(track->st, AV_PKT_DATA_ICC_PROFILE, NULL)) {
2324  int prefer_icc = mov->flags & FF_MOV_FLAG_PREFER_ICC || !has_color_info;
2325  mov_write_colr_tag(pb, track, prefer_icc);
2326  }
2327  } else if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
2328  av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4 or AVIF.\n");
2329  }
2330 
2331  if (track->mode == MODE_MOV || track->mode == MODE_MP4) {
2332  mov_write_clli_tag(pb, track);
2333  mov_write_mdcv_tag(pb, track);
2334  }
2335 
2336  if (track->mode == MODE_MP4 && mov->fc->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
2337  AVStereo3D* stereo_3d = (AVStereo3D*) av_stream_get_side_data(track->st, AV_PKT_DATA_STEREO3D, NULL);
2338  AVSphericalMapping* spherical_mapping = (AVSphericalMapping*)av_stream_get_side_data(track->st, AV_PKT_DATA_SPHERICAL, NULL);
2339  AVDOVIDecoderConfigurationRecord *dovi = (AVDOVIDecoderConfigurationRecord *)
2340  av_stream_get_side_data(track->st, AV_PKT_DATA_DOVI_CONF, NULL);
2341 
2342  if (stereo_3d)
2343  mov_write_st3d_tag(s, pb, stereo_3d);
2344  if (spherical_mapping)
2345  mov_write_sv3d_tag(mov->fc, pb, spherical_mapping);
2346  if (dovi)
2347  mov_write_dvcc_dvvc_tag(s, pb, dovi);
2348  }
2349 
2350  if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
2351  mov_write_pasp_tag(pb, track);
2352  }
2353 
2354  if (uncompressed_ycbcr){
2355  mov_write_clap_tag(pb, track);
2356  }
2357 
2358  if (mov->encryption_scheme != MOV_ENC_NONE) {
2359  ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
2360  }
2361 
2362  if (mov->write_btrt &&
2363  ((ret = mov_write_btrt_tag(pb, track)) < 0))
2364  return ret;
2365 
2366  /* extra padding for avid stsd */
2367  /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
2368  if (avid)
2369  avio_wb32(pb, 0);
2370 
2371  if (track->mode == MODE_AVIF) {
2372  mov_write_ccst_tag(pb);
2373  if (s->nb_streams > 0 && track == &mov->tracks[1])
2374  mov_write_aux_tag(pb, "auxi");
2375  }
2376 
2377  return update_size(pb, pos);
2378 }
2379 
2380 static int mov_write_rtp_tag(AVIOContext *pb, MOVTrack *track)
2381 {
2382  int64_t pos = avio_tell(pb);
2383  avio_wb32(pb, 0); /* size */
2384  ffio_wfourcc(pb, "rtp ");
2385  avio_wb32(pb, 0); /* Reserved */
2386  avio_wb16(pb, 0); /* Reserved */
2387  avio_wb16(pb, 1); /* Data-reference index */
2388 
2389  avio_wb16(pb, 1); /* Hint track version */
2390  avio_wb16(pb, 1); /* Highest compatible version */
2391  avio_wb32(pb, track->max_packet_size); /* Max packet size */
2392 
2393  avio_wb32(pb, 12); /* size */
2394  ffio_wfourcc(pb, "tims");
2395  avio_wb32(pb, track->timescale);
2396 
2397  return update_size(pb, pos);
2398 }
2399 
2400 static int mov_write_source_reference_tag(AVIOContext *pb, MOVTrack *track, const char *reel_name)
2401 {
2402  uint64_t str_size =strlen(reel_name);
2403  int64_t pos = avio_tell(pb);
2404 
2405  if (str_size >= UINT16_MAX){
2406  av_log(NULL, AV_LOG_ERROR, "reel_name length %"PRIu64" is too large\n", str_size);
2407  avio_wb16(pb, 0);
2408  return AVERROR(EINVAL);
2409  }
2410 
2411  avio_wb32(pb, 0); /* size */
2412  ffio_wfourcc(pb, "name"); /* Data format */
2413  avio_wb16(pb, str_size); /* string size */
2414  avio_wb16(pb, track->language); /* langcode */
2415  avio_write(pb, reel_name, str_size); /* reel name */
2416  return update_size(pb,pos);
2417 }
2418 
2419 static int mov_write_tmcd_tag(AVIOContext *pb, MOVTrack *track)
2420 {
2421  int64_t pos = avio_tell(pb);
2422 #if 1
2423  int frame_duration;
2424  int nb_frames;
2425  AVDictionaryEntry *t = NULL;
2426 
2427  if (!track->st->avg_frame_rate.num || !track->st->avg_frame_rate.den) {
2428  av_log(NULL, AV_LOG_ERROR, "avg_frame_rate not set for tmcd track.\n");
2429  return AVERROR(EINVAL);
2430  } else {
2431  frame_duration = av_rescale(track->timescale, track->st->avg_frame_rate.den, track->st->avg_frame_rate.num);
2432  nb_frames = ROUNDED_DIV(track->st->avg_frame_rate.num, track->st->avg_frame_rate.den);
2433  }
2434 
2435  if (nb_frames > 255) {
2436  av_log(NULL, AV_LOG_ERROR, "fps %d is too large\n", nb_frames);
2437  return AVERROR(EINVAL);
2438  }
2439 
2440  avio_wb32(pb, 0); /* size */
2441  ffio_wfourcc(pb, "tmcd"); /* Data format */
2442  avio_wb32(pb, 0); /* Reserved */
2443  avio_wb32(pb, 1); /* Data reference index */
2444  avio_wb32(pb, 0); /* Flags */
2445  avio_wb32(pb, track->timecode_flags); /* Flags (timecode) */
2446  avio_wb32(pb, track->timescale); /* Timescale */
2447  avio_wb32(pb, frame_duration); /* Frame duration */
2448  avio_w8(pb, nb_frames); /* Number of frames */
2449  avio_w8(pb, 0); /* Reserved */
2450 
2451  t = av_dict_get(track->st->metadata, "reel_name", NULL, 0);
2452  if (t && utf8len(t->value) && track->mode != MODE_MP4)
2453  mov_write_source_reference_tag(pb, track, t->value);
2454  else
2455  avio_wb16(pb, 0); /* zero size */
2456 #else
2457 
2458  avio_wb32(pb, 0); /* size */
2459  ffio_wfourcc(pb, "tmcd"); /* Data format */
2460  avio_wb32(pb, 0); /* Reserved */
2461  avio_wb32(pb, 1); /* Data reference index */
2462  if (track->par->extradata_size)
2463  avio_write(pb, track->par->extradata, track->par->extradata_size);
2464 #endif
2465  return update_size(pb, pos);
2466 }
2467 
2468 static int mov_write_gpmd_tag(AVIOContext *pb, const MOVTrack *track)
2469 {
2470  int64_t pos = avio_tell(pb);
2471  avio_wb32(pb, 0); /* size */
2472  ffio_wfourcc(pb, "gpmd");
2473  avio_wb32(pb, 0); /* Reserved */
2474  avio_wb16(pb, 0); /* Reserved */
2475  avio_wb16(pb, 1); /* Data-reference index */
2476  avio_wb32(pb, 0); /* Reserved */
2477  return update_size(pb, pos);
2478 }
2479 
2480 static int mov_write_stsd_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2481 {
2482  int64_t pos = avio_tell(pb);
2483  int ret = 0;
2484  avio_wb32(pb, 0); /* size */
2485  ffio_wfourcc(pb, "stsd");
2486  avio_wb32(pb, 0); /* version & flags */
2487  avio_wb32(pb, 1); /* entry count */
2488  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
2489  ret = mov_write_video_tag(s, pb, mov, track);
2490  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
2491  ret = mov_write_audio_tag(s, pb, mov, track);
2492  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
2493  ret = mov_write_subtitle_tag(s, pb, track);
2494  else if (track->par->codec_tag == MKTAG('r','t','p',' '))
2495  ret = mov_write_rtp_tag(pb, track);
2496  else if (track->par->codec_tag == MKTAG('t','m','c','d'))
2497  ret = mov_write_tmcd_tag(pb, track);
2498  else if (track->par->codec_tag == MKTAG('g','p','m','d'))
2499  ret = mov_write_gpmd_tag(pb, track);
2500 
2501  if (ret < 0)
2502  return ret;
2503 
2504  return update_size(pb, pos);
2505 }
2506 
2507 static int mov_write_ctts_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2508 {
2509  MOVMuxContext *mov = s->priv_data;
2510  MOVCtts *ctts_entries;
2511  uint32_t entries = 0;
2512  uint32_t atom_size;
2513  int i;
2514 
2515  ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
2516  if (!ctts_entries)
2517  return AVERROR(ENOMEM);
2518  ctts_entries[0].count = 1;
2519  ctts_entries[0].duration = track->cluster[0].cts;
2520  for (i = 1; i < track->entry; i++) {
2521  if (track->cluster[i].cts == ctts_entries[entries].duration) {
2522  ctts_entries[entries].count++; /* compress */
2523  } else {
2524  entries++;
2525  ctts_entries[entries].duration = track->cluster[i].cts;
2526  ctts_entries[entries].count = 1;
2527  }
2528  }
2529  entries++; /* last one */
2530  atom_size = 16 + (entries * 8);
2531  avio_wb32(pb, atom_size); /* size */
2532  ffio_wfourcc(pb, "ctts");
2533  if (mov->flags & FF_MOV_FLAG_NEGATIVE_CTS_OFFSETS)
2534  avio_w8(pb, 1); /* version */
2535  else
2536  avio_w8(pb, 0); /* version */
2537  avio_wb24(pb, 0); /* flags */
2538  avio_wb32(pb, entries); /* entry count */
2539  for (i = 0; i < entries; i++) {
2540  avio_wb32(pb, ctts_entries[i].count);
2541  avio_wb32(pb, ctts_entries[i].duration);
2542  }
2543  av_free(ctts_entries);
2544  return atom_size;
2545 }
2546 
2547 /* Time to sample atom */
2548 static int mov_write_stts_tag(AVIOContext *pb, MOVTrack *track)
2549 {
2550  MOVStts *stts_entries = NULL;
2551  uint32_t entries = -1;
2552  uint32_t atom_size;
2553  int i;
2554 
2555  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO && !track->audio_vbr) {
2556  stts_entries = av_malloc(sizeof(*stts_entries)); /* one entry */
2557  if (!stts_entries)
2558  return AVERROR(ENOMEM);
2559  stts_entries[0].count = track->sample_count;
2560  stts_entries[0].duration = 1;
2561  entries = 1;
2562  } else {
2563  if (track->entry) {
2564  stts_entries = av_malloc_array(track->entry, sizeof(*stts_entries)); /* worst case */
2565  if (!stts_entries)
2566  return AVERROR(ENOMEM);
2567  }
2568  for (i = 0; i < track->entry; i++) {
2569  int duration = get_cluster_duration(track, i);
2570  if (i && duration == stts_entries[entries].duration) {
2571  stts_entries[entries].count++; /* compress */
2572  } else {
2573  entries++;
2574  stts_entries[entries].duration = duration;
2575  stts_entries[entries].count = 1;
2576  }
2577  }
2578  entries++; /* last one */
2579  }
2580  atom_size = 16 + (entries * 8);
2581  avio_wb32(pb, atom_size); /* size */
2582  ffio_wfourcc(pb, "stts");
2583  avio_wb32(pb, 0); /* version & flags */
2584  avio_wb32(pb, entries); /* entry count */
2585  for (i = 0; i < entries; i++) {
2586  avio_wb32(pb, stts_entries[i].count);
2587  avio_wb32(pb, stts_entries[i].duration);
2588  }
2589  av_free(stts_entries);
2590  return atom_size;
2591 }
2592 
2593 static int mov_write_dref_tag(AVIOContext *pb)
2594 {
2595  avio_wb32(pb, 28); /* size */
2596  ffio_wfourcc(pb, "dref");
2597  avio_wb32(pb, 0); /* version & flags */
2598  avio_wb32(pb, 1); /* entry count */
2599 
2600  avio_wb32(pb, 0xc); /* size */
2601  //FIXME add the alis and rsrc atom
2602  ffio_wfourcc(pb, "url ");
2603  avio_wb32(pb, 1); /* version & flags */
2604 
2605  return 28;
2606 }
2607 
2608 static int mov_preroll_write_stbl_atoms(AVIOContext *pb, MOVTrack *track)
2609 {
2610  struct sgpd_entry {
2611  int count;
2612  int16_t roll_distance;
2613  int group_description_index;
2614  };
2615 
2616  struct sgpd_entry *sgpd_entries = NULL;
2617  int entries = -1;
2618  int group = 0;
2619  int i, j;
2620 
2621  const int OPUS_SEEK_PREROLL_MS = 80;
2622  int roll_samples = av_rescale_q(OPUS_SEEK_PREROLL_MS,
2623  (AVRational){1, 1000},
2624  (AVRational){1, 48000});
2625 
2626  if (!track->entry)
2627  return 0;
2628 
2629  sgpd_entries = av_malloc_array(track->entry, sizeof(*sgpd_entries));
2630  if (!sgpd_entries)
2631  return AVERROR(ENOMEM);
2632 
2633  av_assert0(track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC);
2634 
2635  if (track->par->codec_id == AV_CODEC_ID_OPUS) {
2636  for (i = 0; i < track->entry; i++) {
2637  int roll_samples_remaining = roll_samples;
2638  int distance = 0;
2639  for (j = i - 1; j >= 0; j--) {
2640  roll_samples_remaining -= get_cluster_duration(track, j);
2641  distance++;
2642  if (roll_samples_remaining <= 0)
2643  break;
2644  }
2645  /* We don't have enough preceeding samples to compute a valid
2646  roll_distance here, so this sample can't be independently
2647  decoded. */
2648  if (roll_samples_remaining > 0)
2649  distance = 0;
2650  /* Verify distance is a maximum of 32 (2.5ms) packets. */
2651  if (distance > 32)
2652  return AVERROR_INVALIDDATA;
2653  if (i && distance == sgpd_entries[entries].roll_distance) {
2654  sgpd_entries[entries].count++;
2655  } else {
2656  entries++;
2657  sgpd_entries[entries].count = 1;
2658  sgpd_entries[entries].roll_distance = distance;
2659  sgpd_entries[entries].group_description_index = distance ? ++group : 0;
2660  }
2661  }
2662  } else {
2663  entries++;
2664  sgpd_entries[entries].count = track->sample_count;
2665  sgpd_entries[entries].roll_distance = 1;
2666  sgpd_entries[entries].group_description_index = ++group;
2667  }
2668  entries++;
2669 
2670  if (!group) {
2671  av_free(sgpd_entries);
2672  return 0;
2673  }
2674 
2675  /* Write sgpd tag */
2676  avio_wb32(pb, 24 + (group * 2)); /* size */
2677  ffio_wfourcc(pb, "sgpd");
2678  avio_wb32(pb, 1 << 24); /* fullbox */
2679  ffio_wfourcc(pb, "roll");
2680  avio_wb32(pb, 2); /* default_length */
2681  avio_wb32(pb, group); /* entry_count */
2682  for (i = 0; i < entries; i++) {
2683  if (sgpd_entries[i].group_description_index) {
2684  avio_wb16(pb, -sgpd_entries[i].roll_distance); /* roll_distance */
2685  }
2686  }
2687 
2688  /* Write sbgp tag */
2689  avio_wb32(pb, 20 + (entries * 8)); /* size */
2690  ffio_wfourcc(pb, "sbgp");
2691  avio_wb32(pb, 0); /* fullbox */
2692  ffio_wfourcc(pb, "roll");
2693  avio_wb32(pb, entries); /* entry_count */
2694  for (i = 0; i < entries; i++) {
2695  avio_wb32(pb, sgpd_entries[i].count); /* sample_count */
2696  avio_wb32(pb, sgpd_entries[i].group_description_index); /* group_description_index */
2697  }
2698 
2699  av_free(sgpd_entries);
2700  return 0;
2701 }
2702 
2703 static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
2704 {
2705  int64_t pos = avio_tell(pb);
2706  int ret = 0;
2707 
2708  avio_wb32(pb, 0); /* size */
2709  ffio_wfourcc(pb, "stbl");
2710  if ((ret = mov_write_stsd_tag(s, pb, mov, track)) < 0)
2711  return ret;
2712  mov_write_stts_tag(pb, track);
2713  if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
2714  track->par->codec_id == AV_CODEC_ID_TRUEHD ||
2715  track->par->codec_id == AV_CODEC_ID_MPEGH_3D_AUDIO ||
2716  track->par->codec_tag == MKTAG('r','t','p',' ')) &&
2717  track->has_keyframes && track->has_keyframes < track->entry)
2718  mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
2719  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO && track->has_disposable)
2720  mov_write_sdtp_tag(pb, track);
2721  if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
2722  mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
2723  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
2724  track->flags & MOV_TRACK_CTTS && track->entry) {
2725 
2726  if ((ret = mov_write_ctts_tag(s, pb, track)) < 0)
2727  return ret;
2728  }
2729  mov_write_stsc_tag(pb, track);
2730  mov_write_stsz_tag(pb, track);
2731  mov_write_stco_tag(pb, track);
2732  if (track->cenc.aes_ctr) {
2733  ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);
2734  }
2735  if (track->par->codec_id == AV_CODEC_ID_OPUS || track->par->codec_id == AV_CODEC_ID_AAC) {
2736  mov_preroll_write_stbl_atoms(pb, track);
2737  }
2738  return update_size(pb, pos);
2739 }
2740 
2741 static int mov_write_dinf_tag(AVIOContext *pb)
2742 {
2743  int64_t pos = avio_tell(pb);
2744  avio_wb32(pb, 0); /* size */
2745  ffio_wfourcc(pb, "dinf");
2746  mov_write_dref_tag(pb);
2747  return update_size(pb, pos);
2748 }
2749 
2750 static int mov_write_nmhd_tag(AVIOContext *pb)
2751 {
2752  avio_wb32(pb, 12);
2753  ffio_wfourcc(pb, "nmhd");
2754  avio_wb32(pb, 0);
2755  return 12;
2756 }
2757 
2758 static int mov_write_sthd_tag(AVIOContext *pb)
2759 {
2760  avio_wb32(pb, 12);
2761  ffio_wfourcc(pb, "sthd");
2762  avio_wb32(pb, 0);
2763  return 12;
2764 }
2765 
2766 static int mov_write_tcmi_tag(AVIOContext *pb, MOVTrack *track)
2767 {
2768  int64_t pos = avio_tell(pb);
2769  const char *font = "Lucida Grande";
2770  avio_wb32(pb, 0); /* size */
2771  ffio_wfourcc(pb, "tcmi"); /* timecode media information atom */
2772  avio_wb32(pb, 0); /* version & flags */
2773  avio_wb16(pb, 0); /* text font */
2774  avio_wb16(pb, 0); /* text face */
2775  avio_wb16(pb, 12); /* text size */
2776  avio_wb16(pb, 0); /* (unknown, not in the QT specs...) */
2777  avio_wb16(pb, 0x0000); /* text color (red) */
2778  avio_wb16(pb, 0x0000); /* text color (green) */
2779  avio_wb16(pb, 0x0000); /* text color (blue) */
2780  avio_wb16(pb, 0xffff); /* background color (red) */
2781  avio_wb16(pb, 0xffff); /* background color (green) */
2782  avio_wb16(pb, 0xffff); /* background color (blue) */
2783  avio_w8(pb, strlen(font)); /* font len (part of the pascal string) */
2784  avio_write(pb, font, strlen(font)); /* font name */
2785  return update_size(pb, pos);
2786 }
2787 
2788 static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
2789 {
2790  int64_t pos = avio_tell(pb);
2791  avio_wb32(pb, 0); /* size */
2792  ffio_wfourcc(pb, "gmhd");
2793  avio_wb32(pb, 0x18); /* gmin size */
2794  ffio_wfourcc(pb, "gmin");/* generic media info */
2795  avio_wb32(pb, 0); /* version & flags */
2796  avio_wb16(pb, 0x40); /* graphics mode = */
2797  avio_wb16(pb, 0x8000); /* opColor (r?) */
2798  avio_wb16(pb, 0x8000); /* opColor (g?) */
2799  avio_wb16(pb, 0x8000); /* opColor (b?) */
2800  avio_wb16(pb, 0); /* balance */
2801  avio_wb16(pb, 0); /* reserved */
2802 
2803  /*
2804  * This special text atom is required for
2805  * Apple Quicktime chapters. The contents
2806  * don't appear to be documented, so the
2807  * bytes are copied verbatim.
2808  */
2809  if (track->tag != MKTAG('c','6','0','8')) {
2810  avio_wb32(pb, 0x2C); /* size */
2811  ffio_wfourcc(pb, "text");
2812  avio_wb16(pb, 0x01);
2813  avio_wb32(pb, 0x00);
2814  avio_wb32(pb, 0x00);
2815  avio_wb32(pb, 0x00);
2816  avio_wb32(pb, 0x01);
2817  avio_wb32(pb, 0x00);
2818  avio_wb32(pb, 0x00);
2819  avio_wb32(pb, 0x00);
2820  avio_wb32(pb, 0x00004000);
2821  avio_wb16(pb, 0x0000);
2822  }
2823 
2824  if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2825  int64_t tmcd_pos = avio_tell(pb);
2826  avio_wb32(pb, 0); /* size */
2827  ffio_wfourcc(pb, "tmcd");
2828  mov_write_tcmi_tag(pb, track);
2829  update_size(pb, tmcd_pos);
2830  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2831  int64_t gpmd_pos = avio_tell(pb);
2832  avio_wb32(pb, 0); /* size */
2833  ffio_wfourcc(pb, "gpmd");
2834  avio_wb32(pb, 0); /* version */
2835  update_size(pb, gpmd_pos);
2836  }
2837  return update_size(pb, pos);
2838 }
2839 
2840 static int mov_write_smhd_tag(AVIOContext *pb)
2841 {
2842  avio_wb32(pb, 16); /* size */
2843  ffio_wfourcc(pb, "smhd");
2844  avio_wb32(pb, 0); /* version & flags */
2845  avio_wb16(pb, 0); /* reserved (balance, normally = 0) */
2846  avio_wb16(pb, 0); /* reserved */
2847  return 16;
2848 }
2849 
2850 static int mov_write_vmhd_tag(AVIOContext *pb)
2851 {
2852  avio_wb32(pb, 0x14); /* size (always 0x14) */
2853  ffio_wfourcc(pb, "vmhd");
2854  avio_wb32(pb, 0x01); /* version & flags */
2855  avio_wb64(pb, 0); /* reserved (graphics mode = copy) */
2856  return 0x14;
2857 }
2858 
2859 static int is_clcp_track(MOVTrack *track)
2860 {
2861  return track->tag == MKTAG('c','7','0','8') ||
2862  track->tag == MKTAG('c','6','0','8');
2863 }
2864 
2865 static int mov_write_hdlr_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
2866 {
2867  MOVMuxContext *mov = s->priv_data;
2868  const char *hdlr, *descr = NULL, *hdlr_type = NULL;
2869  int64_t pos = avio_tell(pb);
2870  size_t descr_len;
2871 
2872  hdlr = "dhlr";
2873  hdlr_type = "url ";
2874  descr = "DataHandler";
2875 
2876  if (track) {
2877  hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
2878  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
2879  if (track->mode == MODE_AVIF) {
2880  hdlr_type = (track == &mov->tracks[0]) ? "pict" : "auxv";
2881  descr = "PictureHandler";
2882  } else {
2883  hdlr_type = "vide";
2884  descr = "VideoHandler";
2885  }
2886  } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
2887  hdlr_type = "soun";
2888  descr = "SoundHandler";
2889  } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2890  if (is_clcp_track(track)) {
2891  hdlr_type = "clcp";
2892  descr = "ClosedCaptionHandler";
2893  } else {
2894  if (track->tag == MKTAG('t','x','3','g')) {
2895  hdlr_type = "sbtl";
2896  } else if (track->tag == MKTAG('m','p','4','s')) {
2897  hdlr_type = "subp";
2898  } else if (track->tag == MOV_MP4_TTML_TAG) {
2899  hdlr_type = "subt";
2900  } else {
2901  hdlr_type = "text";
2902  }
2903  descr = "SubtitleHandler";
2904  }
2905  } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
2906  hdlr_type = "hint";
2907  descr = "HintHandler";
2908  } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
2909  hdlr_type = "tmcd";
2910  descr = "TimeCodeHandler";
2911  } else if (track->par->codec_tag == MKTAG('g','p','m','d')) {
2912  hdlr_type = "meta";
2913  descr = "GoPro MET"; // GoPro Metadata
2914  } else {
2915  av_log(s, AV_LOG_WARNING,
2916  "Unknown hdlr_type for %s, writing dummy values\n",
2917  av_fourcc2str(track->par->codec_tag));
2918  }
2919  if (track->st) {
2920  // hdlr.name is used by some players to identify the content title
2921  // of the track. So if an alternate handler description is
2922  // specified, use it.
2923  AVDictionaryEntry *t;
2924  t = av_dict_get(track->st->metadata, "handler_name", NULL, 0);
2925  if (t && utf8len(t->value))
2926  descr = t->value;
2927  }
2928  }
2929 
2930  if (mov->empty_hdlr_name) /* expressly allowed by QTFF and not prohibited in ISO 14496-12 8.4.3.3 */
2931  descr = "";
2932 
2933  avio_wb32(pb, 0); /* size */
2934  ffio_wfourcc(pb, "hdlr");
2935  avio_wb32(pb, 0); /* Version & flags */
2936  avio_write(pb, hdlr, 4); /* handler */
2937  ffio_wfourcc(pb, hdlr_type); /* handler type */
2938  avio_wb32(pb, 0); /* reserved */
2939  avio_wb32(pb, 0); /* reserved */
2940  avio_wb32(pb, 0); /* reserved */
2941  descr_len = strlen(descr);
2942  if (!track || track->mode == MODE_MOV)
2943  avio_w8(pb, descr_len); /* pascal string */
2944  avio_write(pb, descr, descr_len); /* handler description */
2945  if (track && track->mode != MODE_MOV)
2946  avio_w8(pb, 0); /* c string */
2947  return update_size(pb, pos);
2948 }
2949 
2950 static int mov_write_pitm_tag(AVIOContext *pb, int item_id)
2951 {
2952  int64_t pos = avio_tell(pb);
2953  avio_wb32(pb, 0); /* size */
2954  ffio_wfourcc(pb, "pitm");
2955  avio_wb32(pb, 0); /* Version & flags */
2956  avio_wb16(pb, item_id); /* item_id */
2957  return update_size(pb, pos);
2958 }
2959 
2960 static int mov_write_iloc_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
2961 {
2962  int64_t pos = avio_tell(pb);
2963  avio_wb32(pb, 0); /* size */
2964  ffio_wfourcc(pb, "iloc");
2965  avio_wb32(pb, 0); /* Version & flags */
2966  avio_w8(pb, (4 << 4) + 4); /* offset_size(4) and length_size(4) */
2967  avio_w8(pb, 0); /* base_offset_size(4) and reserved(4) */
2968  avio_wb16(pb, s->nb_streams); /* item_count */
2969 
2970  for (int i = 0; i < s->nb_streams; i++) {
2971  avio_wb16(pb, i + 1); /* item_id */
2972  avio_wb16(pb, 0); /* data_reference_index */
2973  avio_wb16(pb, 1); /* extent_count */
2974  mov->avif_extent_pos[i] = avio_tell(pb);
2975  avio_wb32(pb, 0); /* extent_offset (written later) */
2976  // For animated AVIF, we simply write the first packet's size.
2977  avio_wb32(pb, mov->avif_extent_length[i]); /* extent_length */
2978  }
2979 
2980  return update_size(pb, pos);
2981 }
2982 
2983 static int mov_write_iinf_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
2984 {
2985  int64_t iinf_pos = avio_tell(pb);
2986  avio_wb32(pb, 0); /* size */
2987  ffio_wfourcc(pb, "iinf");
2988  avio_wb32(pb, 0); /* Version & flags */
2989  avio_wb16(pb, s->nb_streams); /* entry_count */
2990 
2991  for (int i = 0; i < s->nb_streams; i++) {
2992  int64_t infe_pos = avio_tell(pb);
2993  avio_wb32(pb, 0); /* size */
2994  ffio_wfourcc(pb, "infe");
2995  avio_w8(pb, 0x2); /* Version */
2996  avio_wb24(pb, 0); /* flags */
2997  avio_wb16(pb, i + 1); /* item_id */
2998  avio_wb16(pb, 0); /* item_protection_index */
2999  avio_write(pb, "av01", 4); /* item_type */
3000  avio_write(pb, !i ? "Color\0" : "Alpha\0", 6); /* item_name */
3001  update_size(pb, infe_pos);
3002  }
3003 
3004  return update_size(pb, iinf_pos);
3005 }
3006 
3007 
3008 static int mov_write_iref_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3009 {
3010  int64_t auxl_pos;
3011  int64_t iref_pos = avio_tell(pb);
3012  avio_wb32(pb, 0); /* size */
3013  ffio_wfourcc(pb, "iref");
3014  avio_wb32(pb, 0); /* Version & flags */
3015 
3016  auxl_pos = avio_tell(pb);
3017  avio_wb32(pb, 0); /* size */
3018  ffio_wfourcc(pb, "auxl");
3019  avio_wb16(pb, 2); /* from_item_ID */
3020  avio_wb16(pb, 1); /* reference_count */
3021  avio_wb16(pb, 1); /* to_item_ID */
3022  update_size(pb, auxl_pos);
3023 
3024  return update_size(pb, iref_pos);
3025 }
3026 
3027 static int mov_write_ispe_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3028  int stream_index)
3029 {
3030  int64_t pos = avio_tell(pb);
3031  avio_wb32(pb, 0); /* size */
3032  ffio_wfourcc(pb, "ispe");
3033  avio_wb32(pb, 0); /* Version & flags */
3034  avio_wb32(pb, s->streams[stream_index]->codecpar->width); /* image_width */
3035  avio_wb32(pb, s->streams[stream_index]->codecpar->height); /* image_height */
3036  return update_size(pb, pos);
3037 }
3038 
3039 static int mov_write_pixi_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s,
3040  int stream_index)
3041 {
3042  int64_t pos = avio_tell(pb);
3043  const AVPixFmtDescriptor *pixdesc =
3044  av_pix_fmt_desc_get(s->streams[stream_index]->codecpar->format);
3045  avio_wb32(pb, 0); /* size */
3046  ffio_wfourcc(pb, "pixi");
3047  avio_wb32(pb, 0); /* Version & flags */
3048  avio_w8(pb, pixdesc->nb_components); /* num_channels */
3049  for (int i = 0; i < pixdesc->nb_components; ++i) {
3050  avio_w8(pb, pixdesc->comp[i].depth); /* bits_per_channel */
3051  }
3052  return update_size(pb, pos);
3053 }
3054 
3055 static int mov_write_ipco_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3056 {
3057  int64_t pos = avio_tell(pb);
3058  avio_wb32(pb, 0); /* size */
3059  ffio_wfourcc(pb, "ipco");
3060  for (int i = 0; i < s->nb_streams; i++) {
3061  mov_write_ispe_tag(pb, mov, s, i);
3062  mov_write_pixi_tag(pb, mov, s, i);
3063  mov_write_av1c_tag(pb, &mov->tracks[i]);
3064  if (!i)
3065  mov_write_colr_tag(pb, &mov->tracks[0], 0);
3066  else
3067  mov_write_aux_tag(pb, "auxC");
3068  }
3069  return update_size(pb, pos);
3070 }
3071 
3072 static int mov_write_ipma_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3073 {
3074  int64_t pos = avio_tell(pb);
3075  avio_wb32(pb, 0); /* size */
3076  ffio_wfourcc(pb, "ipma");
3077  avio_wb32(pb, 0); /* Version & flags */
3078  avio_wb32(pb, s->nb_streams); /* entry_count */
3079 
3080  for (int i = 0, index = 1; i < s->nb_streams; i++) {
3081  avio_wb16(pb, i + 1); /* item_ID */
3082  avio_w8(pb, 4); /* association_count */
3083 
3084  // ispe association.
3085  avio_w8(pb, index++); /* essential and property_index */
3086  // pixi association.
3087  avio_w8(pb, index++); /* essential and property_index */
3088  // av1C association.
3089  avio_w8(pb, 0x80 | index++); /* essential and property_index */
3090  // colr/auxC association.
3091  avio_w8(pb, index++); /* essential and property_index */
3092  }
3093  return update_size(pb, pos);
3094 }
3095 
3096 static int mov_write_iprp_tag(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
3097 {
3098  int64_t pos = avio_tell(pb);
3099  avio_wb32(pb, 0); /* size */
3100  ffio_wfourcc(pb, "iprp");
3101  mov_write_ipco_tag(pb, mov, s);
3102  mov_write_ipma_tag(pb, mov, s);
3103  return update_size(pb, pos);
3104 }
3105 
3106 static int mov_write_hmhd_tag(AVIOContext *pb)
3107 {
3108  /* This atom must be present, but leaving the values at zero
3109  * seems harmless. */
3110  avio_wb32(pb, 28); /* size */
3111  ffio_wfourcc(pb, "hmhd");
3112  avio_wb32(pb, 0); /* version, flags */
3113  avio_wb16(pb, 0); /* maxPDUsize */
3114  avio_wb16(pb, 0); /* avgPDUsize */
3115  avio_wb32(pb, 0); /* maxbitrate */
3116  avio_wb32(pb, 0); /* avgbitrate */
3117  avio_wb32(pb, 0); /* reserved */
3118  return 28;
3119 }
3120 
3121 static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
3122 {
3123  int64_t pos = avio_tell(pb);
3124  int ret;
3125 
3126  avio_wb32(pb, 0); /* size */
3127  ffio_wfourcc(pb, "minf");
3128  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
3129  mov_write_vmhd_tag(pb);
3130  else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3131  mov_write_smhd_tag(pb);
3132  else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3133  if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
3134  mov_write_gmhd_tag(pb, track);
3135  } else if (track->tag == MOV_MP4_TTML_TAG) {
3136  mov_write_sthd_tag(pb);
3137  } else {
3138  mov_write_nmhd_tag(pb);
3139  }
3140  } else if (track->tag == MKTAG('r','t','p',' ')) {
3141  mov_write_hmhd_tag(pb);
3142  } else if (track->tag == MKTAG('t','m','c','d')) {
3143  if (track->mode != MODE_MOV)
3144  mov_write_nmhd_tag(pb);
3145  else
3146  mov_write_gmhd_tag(pb, track);
3147  } else if (track->tag == MKTAG('g','p','m','d')) {
3148  mov_write_gmhd_tag(pb, track);
3149  }
3150  if (track->mode == MODE_MOV) /* ISO 14496-12 8.4.3.1 specifies hdlr only within mdia or meta boxes */
3151  mov_write_hdlr_tag(s, pb, NULL);
3152  mov_write_dinf_tag(pb);
3153  if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
3154  return ret;
3155  return update_size(pb, pos);
3156 }
3157 
3158 static void get_pts_range(MOVMuxContext *mov, MOVTrack *track,
3159  int64_t *start, int64_t *end)
3160 {
3161  if (track->tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd) {
3162  // tmcd tracks gets track_duration set in mov_write_moov_tag from
3163  // another track's duration, while the end_pts may be left at zero.
3164  // Calculate the pts duration for that track instead.
3165  get_pts_range(mov, &mov->tracks[track->src_track], start, end);
3166  *start = av_rescale(*start, track->timescale,
3167  mov->tracks[track->src_track].timescale);
3168  *end = av_rescale(*end, track->timescale,
3169  mov->tracks[track->src_track].timescale);
3170  return;
3171  }
3172  if (track->end_pts != AV_NOPTS_VALUE &&
3173  track->start_dts != AV_NOPTS_VALUE &&
3174  track->start_cts != AV_NOPTS_VALUE) {
3175  *start = track->start_dts + track->start_cts;
3176  *end = track->end_pts;
3177  return;
3178  }
3179  *start = 0;
3180  *end = track->track_duration;
3181 }
3182 
3183 static int64_t calc_samples_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3184 {
3185  int64_t start, end;
3186  get_pts_range(mov, track, &start, &end);
3187  return end - start;
3188 }
3189 
3190 // Calculate the actual duration of the track, after edits.
3191 // If it starts with a pts < 0, that is removed by the edit list.
3192 // If it starts with a pts > 0, the edit list adds a delay before that.
3193 // Thus, with edit lists enabled, the post-edit output of the file is
3194 // starting with pts=0.
3195 static int64_t calc_pts_duration(MOVMuxContext *mov, MOVTrack *track)
3196 {
3197  int64_t start, end;
3198  get_pts_range(mov, track, &start, &end);
3199  if (mov->use_editlist != 0)
3200  start = 0;
3201  return end - start;
3202 }
3203 
3204 static int mov_write_mdhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3205  MOVTrack *track)
3206 {
3207  int64_t duration = calc_samples_pts_duration(mov, track);
3208  int version = duration < INT32_MAX ? 0 : 1;
3209 
3210  if (track->mode == MODE_ISM)
3211  version = 1;
3212 
3213  (version == 1) ? avio_wb32(pb, 44) : avio_wb32(pb, 32); /* size */
3214  ffio_wfourcc(pb, "mdhd");
3215  avio_w8(pb, version);
3216  avio_wb24(pb, 0); /* flags */
3217  if (version == 1) {
3218  avio_wb64(pb, track->time);
3219  avio_wb64(pb, track->time);
3220  } else {
3221  avio_wb32(pb, track->time); /* creation time */
3222  avio_wb32(pb, track->time); /* modification time */
3223  }
3224  avio_wb32(pb, track->timescale); /* time scale (sample rate for audio) */
3225  if (!track->entry && mov->mode == MODE_ISM)
3226  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3227  else if (!track->entry)
3228  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3229  else
3230  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration); /* duration */
3231  avio_wb16(pb, track->language); /* language */
3232  avio_wb16(pb, 0); /* reserved (quality) */
3233 
3234  if (version != 0 && track->mode == MODE_MOV) {
3235  av_log(NULL, AV_LOG_ERROR,
3236  "FATAL error, file duration too long for timebase, this file will not be\n"
3237  "playable with QuickTime. Choose a different timebase with "
3238  "-video_track_timescale or a different container format\n");
3239  }
3240 
3241  return 32;
3242 }
3243 
3244 static int mov_write_mdia_tag(AVFormatContext *s, AVIOContext *pb,
3245  MOVMuxContext *mov, MOVTrack *track)
3246 {
3247  int64_t pos = avio_tell(pb);
3248  int ret;
3249 
3250  avio_wb32(pb, 0); /* size */
3251  ffio_wfourcc(pb, "mdia");
3252  mov_write_mdhd_tag(pb, mov, track);
3253  mov_write_hdlr_tag(s, pb, track);
3254  if ((ret = mov_write_minf_tag(s, pb, mov, track)) < 0)
3255  return ret;
3256  return update_size(pb, pos);
3257 }
3258 
3259 /* transformation matrix
3260  |a b u|
3261  |c d v|
3262  |tx ty w| */
3263 static void write_matrix(AVIOContext *pb, int16_t a, int16_t b, int16_t c,
3264  int16_t d, int16_t tx, int16_t ty)
3265 {
3266  avio_wb32(pb, a << 16); /* 16.16 format */
3267  avio_wb32(pb, b << 16); /* 16.16 format */
3268  avio_wb32(pb, 0); /* u in 2.30 format */
3269  avio_wb32(pb, c << 16); /* 16.16 format */
3270  avio_wb32(pb, d << 16); /* 16.16 format */
3271  avio_wb32(pb, 0); /* v in 2.30 format */
3272  avio_wb32(pb, tx << 16); /* 16.16 format */
3273  avio_wb32(pb, ty << 16); /* 16.16 format */
3274  avio_wb32(pb, 1 << 30); /* w in 2.30 format */
3275 }
3276 
3277 static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
3278  MOVTrack *track, AVStream *st)
3279 {
3280  int64_t duration = av_rescale_rnd(calc_pts_duration(mov, track),
3281  mov->movie_timescale, track->timescale,
3282  AV_ROUND_UP);
3283  int version;
3284  int flags = MOV_TKHD_FLAG_IN_MOVIE;
3285  int group = 0;
3286 
3287  uint32_t *display_matrix = NULL;
3288  size_t display_matrix_size;
3289  int i;
3290 
3291  if (mov->mode == MODE_AVIF)
3292  if (!mov->avif_loop_count)
3293  duration = INT64_MAX;
3294  else
3295  duration *= mov->avif_loop_count;
3296 
3297  version = duration < INT32_MAX ? 0 : 1;
3298 
3299  if (st) {
3300  if (mov->per_stream_grouping)
3301  group = st->index;
3302  else
3303  group = st->codecpar->codec_type;
3304 
3305  display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
3306  &display_matrix_size);
3307  if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
3308  display_matrix = NULL;
3309  }
3310 
3311  if (track->flags & MOV_TRACK_ENABLED)
3312  flags |= MOV_TKHD_FLAG_ENABLED;
3313 
3314  if (track->mode == MODE_ISM)
3315  version = 1;
3316 
3317  (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
3318  ffio_wfourcc(pb, "tkhd");
3319  avio_w8(pb, version);
3320  avio_wb24(pb, flags);
3321  if (version == 1) {
3322  avio_wb64(pb, track->time);
3323  avio_wb64(pb, track->time);
3324  } else {
3325  avio_wb32(pb, track->time); /* creation time */
3326  avio_wb32(pb, track->time); /* modification time */
3327  }
3328  avio_wb32(pb, track->track_id); /* track-id */
3329  avio_wb32(pb, 0); /* reserved */
3330  if (!track->entry && mov->mode == MODE_ISM)
3331  (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
3332  else if (!track->entry)
3333  (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
3334  else
3335  (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);
3336 
3337  avio_wb32(pb, 0); /* reserved */
3338  avio_wb32(pb, 0); /* reserved */
3339  avio_wb16(pb, 0); /* layer */
3340  avio_wb16(pb, group); /* alternate group) */
3341  /* Volume, only for audio */
3342  if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
3343  avio_wb16(pb, 0x0100);
3344  else
3345  avio_wb16(pb, 0);
3346  avio_wb16(pb, 0); /* reserved */
3347 
3348  /* Matrix structure */
3349  if (display_matrix) {
3350  for (i = 0; i < 9; i++)
3351  avio_wb32(pb, display_matrix[i]);
3352  } else {
3353  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3354  }
3355  /* Track width and height, for visual only */
3356  if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
3357  track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
3358  int64_t track_width_1616;
3359  if (track->mode == MODE_MOV || track->mode == MODE_AVIF) {
3360  track_width_1616 = track->par->width * 0x10000ULL;
3361  } else {
3362  track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
3363  track->par->width * 0x10000LL,
3364  st->sample_aspect_ratio.den);
3365  if (!track_width_1616 ||
3366  track->height != track->par->height ||
3367  track_width_1616 > UINT32_MAX)
3368  track_width_1616 = track->par->width * 0x10000ULL;
3369  }
3370  if (track_width_1616 > UINT32_MAX) {
3371  av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
3372  track_width_1616 = 0;
3373  }
3374  avio_wb32(pb, track_width_1616);
3375  if (track->height > 0xFFFF) {
3376  av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
3377  avio_wb32(pb, 0);
3378  } else
3379  avio_wb32(pb, track->height * 0x10000U);
3380  } else {
3381  avio_wb32(pb, 0);
3382  avio_wb32(pb, 0);
3383  }
3384  return 0x5c;
3385 }
3386 
3387 static int mov_write_tapt_tag(AVIOContext *pb, MOVTrack *track)
3388 {
3389  int32_t width = av_rescale(track->par->sample_aspect_ratio.num, track->par->width,
3390  track->par->sample_aspect_ratio.den);
3391 
3392  int64_t pos = avio_tell(pb);
3393 
3394  avio_wb32(pb, 0); /* size */
3395  ffio_wfourcc(pb, "tapt");
3396 
3397  avio_wb32(pb, 20);
3398  ffio_wfourcc(pb, "clef");
3399  avio_wb32(pb, 0);
3400  avio_wb32(pb, width << 16);
3401  avio_wb32(pb, track->par->height << 16);
3402 
3403  avio_wb32(pb, 20);
3404  ffio_wfourcc(pb, "prof");
3405  avio_wb32(pb, 0);
3406  avio_wb32(pb, width << 16);
3407  avio_wb32(pb, track->par->height << 16);
3408 
3409  avio_wb32(pb, 20);
3410  ffio_wfourcc(pb, "enof");
3411  avio_wb32(pb, 0);
3412  avio_wb32(pb, track->par->width << 16);
3413  avio_wb32(pb, track->par->height << 16);
3414 
3415  return update_size(pb, pos);
3416 }
3417 
3418 // This box is written in the following cases:
3419 // * Seems important for the psp playback. Without it the movie seems to hang.
3420 // * Used for specifying the looping behavior of animated AVIF (as specified
3421 // in Section 9.6 of the HEIF specification ISO/IEC 23008-12).
3422 static int mov_write_edts_tag(AVIOContext *pb, MOVMuxContext *mov,
3423  MOVTrack *track)
3424 {
3425  int64_t duration = av_rescale_rnd(calc_samples_pts_duration(mov, track),
3426  mov->movie_timescale, track->timescale,
3427  AV_ROUND_UP);
3428  int version = duration < INT32_MAX ? 0 : 1;
3429  int entry_size, entry_count, size;
3430  int64_t delay, start_ct = track->start_cts;
3431  int64_t start_dts = track->start_dts;
3432  int flags = 0;
3433 
3434  if (track->entry) {
3435  if (start_dts != track->cluster[0].dts || start_ct != track->cluster[0].cts) {
3436 
3437  av_log(mov->fc, AV_LOG_DEBUG,
3438  "EDTS using dts:%"PRId64" cts:%d instead of dts:%"PRId64" cts:%"PRId64" tid:%d\n",
3439  track->cluster[0].dts, track->cluster[0].cts,
3440  start_dts, start_ct, track->track_id);
3441  start_dts = track->cluster[0].dts;
3442  start_ct = track->cluster[0].cts;
3443  }
3444  }
3445 
3446  delay = av_rescale_rnd(start_dts + start_ct, mov->movie_timescale,
3447  track->timescale, AV_ROUND_DOWN);
3448 
3449  if (mov->mode == MODE_AVIF) {
3450  delay = 0;
3451  // Section 9.6.3 of ISO/IEC 23008-12: flags specifies repetition of the
3452  // edit list as follows: (flags & 1) equal to 0 specifies that the edit
3453  // list is not repeated, while (flags & 1) equal to 1 specifies that the
3454  // edit list is repeated.
3455  flags = mov->avif_loop_count != 1;
3456  start_ct = 0;
3457  }
3458 
3459  version |= delay < INT32_MAX ? 0 : 1;
3460 
3461  entry_size = (version == 1) ? 20 : 12;
3462  entry_count = 1 + (delay > 0);
3463  size = 24 + entry_count * entry_size;
3464 
3465  /* write the atom data */
3466  avio_wb32(pb, size);
3467  ffio_wfourcc(pb, "edts");
3468  avio_wb32(pb, size - 8);
3469  ffio_wfourcc(pb, "elst");
3470  avio_w8(pb, version);
3471  avio_wb24(pb, flags); /* flags */
3472 
3473  avio_wb32(pb, entry_count);
3474  if (delay > 0) { /* add an empty edit to delay presentation */
3475  /* In the positive delay case, the delay includes the cts
3476  * offset, and the second edit list entry below trims out
3477  * the same amount from the actual content. This makes sure
3478  * that the offset last sample is included in the edit
3479  * list duration as well. */
3480  if (version == 1) {
3481  avio_wb64(pb, delay);
3482  avio_wb64(pb, -1);
3483  } else {
3484  avio_wb32(pb, delay);
3485  avio_wb32(pb, -1);
3486  }
3487  avio_wb32(pb, 0x00010000);
3488  } else if (mov->mode != MODE_AVIF) {
3489  /* Avoid accidentally ending up with start_ct = -1 which has got a
3490  * special meaning. Normally start_ct should end up positive or zero
3491  * here, but use FFMIN in case dts is a small positive integer
3492  * rounded to 0 when represented in movie timescale units. */
3493  av_assert0(av_rescale_rnd(start_dts, mov->movie_timescale, track->timescale, AV_ROUND_DOWN) <= 0);
3494  start_ct = -FFMIN(start_dts, 0);
3495  /* Note, this delay is calculated from the pts of the first sample,
3496  * ensuring that we don't reduce the duration for cases with
3497  * dts<0 pts=0. */
3498  duration += delay;
3499  }
3500 
3501  /* For fragmented files, we don't know the full length yet. Setting
3502  * duration to 0 allows us to only specify the offset, including
3503  * the rest of the content (from all future fragments) without specifying
3504  * an explicit duration. */
3505  if (mov->flags & FF_MOV_FLAG_FRAGMENT)
3506  duration = 0;
3507 
3508  /* duration */
3509  if (version == 1) {
3510  avio_wb64(pb, duration);
3511  avio_wb64(pb, start_ct);
3512  } else {
3513  avio_wb32(pb, duration);
3514  avio_wb32(pb, start_ct);
3515  }
3516  avio_wb32(pb, 0x00010000);
3517  return size;
3518 }
3519 
3520 static int mov_write_tref_tag(AVIOContext *pb, MOVTrack *track)
3521 {
3522  avio_wb32(pb, 20); // size
3523  ffio_wfourcc(pb, "tref");
3524  avio_wb32(pb, 12); // size (subatom)
3525  avio_wl32(pb, track->tref_tag);
3526  avio_wb32(pb, track->tref_id);
3527  return 20;
3528 }
3529 
3530 // goes at the end of each track! ... Critical for PSP playback ("Incompatible data" without it)
3531 static int mov_write_uuid_tag_psp(AVIOContext *pb, MOVTrack *mov)
3532 {
3533  avio_wb32(pb, 0x34); /* size ... reports as 28 in mp4box! */
3534  ffio_wfourcc(pb, "uuid");
3535  ffio_wfourcc(pb, "USMT");
3536  avio_wb32(pb, 0x21d24fce);
3537  avio_wb32(pb, 0xbb88695c);
3538  avio_wb32(pb, 0xfac9c740);
3539  avio_wb32(pb, 0x1c); // another size here!
3540  ffio_wfourcc(pb, "MTDT");
3541  avio_wb32(pb, 0x00010012);
3542  avio_wb32(pb, 0x0a);
3543  avio_wb32(pb, 0x55c40000);
3544  avio_wb32(pb, 0x1);
3545  avio_wb32(pb, 0x0);
3546  return 0x34;
3547 }
3548 
3549 static int mov_write_udta_sdp(AVIOContext *pb, MOVTrack *track)
3550 {
3551  AVFormatContext *ctx = track->rtp_ctx;
3552  char buf[1000] = "";
3553  int len;
3554 
3555  ff_sdp_write_media(buf, sizeof(buf), ctx->streams[0], track->src_track,
3556  NULL, NULL, 0, 0, ctx);
3557  av_strlcatf(buf, sizeof(buf), "a=control:streamid=%d\r\n", track->track_id);
3558  len = strlen(buf);
3559 
3560  avio_wb32(pb, len + 24);
3561  ffio_wfourcc(pb, "udta");
3562  avio_wb32(pb, len + 16);
3563  ffio_wfourcc(pb, "hnti");
3564  avio_wb32(pb, len + 8);
3565  ffio_wfourcc(pb, "sdp ");
3566  avio_write(pb, buf, len);
3567  return len + 24;
3568 }
3569 
3570 static int mov_write_track_metadata(AVIOContext *pb, AVStream *st,
3571  const char *tag, const char *str)
3572 {
3573  int64_t pos = avio_tell(pb);
3574  AVDictionaryEntry *t = av_dict_get(st->metadata, str, NULL, 0);
3575  if (!t || !utf8len(t->value))
3576  return 0;
3577 
3578  avio_wb32(pb, 0); /* size */
3579  ffio_wfourcc(pb, tag); /* type */
3580  avio_write(pb, t->value, strlen(t->value)); /* UTF8 string value */
3581  return update_size(pb, pos);
3582 }
3583 
3584 static int mov_write_track_kind(AVIOContext *pb, const char *scheme_uri,
3585  const char *value)
3586 {
3587  int64_t pos = avio_tell(pb);
3588 
3589  /* Box|FullBox basics */
3590  avio_wb32(pb, 0); /* size placeholder */
3591  ffio_wfourcc(pb, (const unsigned char *)"kind");
3592  avio_w8(pb, 0); /* version = 0 */
3593  avio_wb24(pb, 0); /* flags = 0 */
3594 
3595  /* Required null-terminated scheme URI */
3596  avio_write(pb, (const unsigned char *)scheme_uri,
3597  strlen(scheme_uri));
3598  avio_w8(pb, 0);
3599 
3600  /* Optional value string */
3601  if (value && value[0])
3602  avio_write(pb, (const unsigned char *)value,
3603  strlen(value));
3604 
3605  avio_w8(pb, 0);
3606 
3607  return update_size(pb, pos);
3608 }
3609 
3610 static int mov_write_track_kinds(AVIOContext *pb, AVStream *st)
3611 {
3612  int ret = AVERROR_BUG;
3613 
3614  for (int i = 0; ff_mov_track_kind_table[i].scheme_uri; i++) {
3615  const struct MP4TrackKindMapping map = ff_mov_track_kind_table[i];
3616 
3617  for (int j = 0; map.value_maps[j].disposition; j++) {
3618  const struct MP4TrackKindValueMapping value_map = map.value_maps[j];
3619  if (!(st->disposition & value_map.disposition))
3620  continue;
3621 
3622  if ((ret = mov_write_track_kind(pb, map.scheme_uri, value_map.value)) < 0)
3623  return ret;
3624  }
3625  }
3626 
3627  return 0;
3628 }
3629 
3630 static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
3631  AVStream *st)
3632 {
3633  AVIOContext *pb_buf;
3634  int ret, size;
3635  uint8_t *buf;
3636 
3637  if (!st)
3638  return 0;
3639 
3640  ret = avio_open_dyn_buf(&pb_buf);
3641  if (ret < 0)
3642  return ret;
3643 
3644  if (mov->mode & (MODE_MP4|MODE_MOV))
3645  mov_write_track_metadata(pb_buf, st, "name", "title");
3646 
3647  if (mov->mode & MODE_MP4) {
3648  if ((ret = mov_write_track_kinds(pb_buf, st)) < 0)
3649  return ret;
3650  }
3651 
3652  if ((size = avio_get_dyn_buf(pb_buf, &buf)) > 0) {
3653  avio_wb32(pb, size + 8);
3654  ffio_wfourcc(pb, "udta");
3655  avio_write(pb, buf, size);
3656  }
3657  ffio_free_dyn_buf(&pb_buf);
3658 
3659  return 0;
3660 }
3661 
3662 static int mov_write_trak_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov,
3663  MOVTrack *track, AVStream *st)
3664 {
3665  int64_t pos = avio_tell(pb);
3666  int entry_backup = track->entry;
3667  int chunk_backup = track->chunkCount;
3668  int ret;
3669 
3670  /* If we want to have an empty moov, but some samples already have been
3671  * buffered (delay_moov), pretend that no samples have been written yet. */
3672  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV)
3673  track->chunkCount = track->entry = 0;
3674 
3675  avio_wb32(pb, 0); /* size */
3676  ffio_wfourcc(pb, "trak");
3677  mov_write_tkhd_tag(pb, mov, track, st);
3678 
3679  av_assert2(mov->use_editlist >= 0);
3680 
3681  if (track->start_dts != AV_NOPTS_VALUE) {
3682  if (mov->use_editlist)
3683  mov_write_edts_tag(pb, mov, track); // PSP Movies and several other cases require edts box
3684  else if ((track->entry && track->cluster[0].dts) || track->mode == MODE_PSP || is_clcp_track(track))
3685  av_log(mov->fc, AV_LOG_WARNING,
3686  "Not writing any edit list even though one would have been required\n");
3687  }
3688 
3689  if (mov->is_animated_avif)
3690  mov_write_edts_tag(pb, mov, track);
3691 
3692  if (track->tref_tag)
3693  mov_write_tref_tag(pb, track);
3694 
3695  if ((ret = mov_write_mdia_tag(s, pb, mov, track)) < 0)
3696  return ret;
3697  if (track->mode == MODE_PSP)
3698  mov_write_uuid_tag_psp(pb, track); // PSP Movies require this uuid box
3699  if (track->tag == MKTAG('r','t','p',' '))
3700  mov_write_udta_sdp(pb, track);
3701  if (track->mode == MODE_MOV) {
3702  if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
3703  double sample_aspect_ratio = av_q2d(st->sample_aspect_ratio);
3704  if (st->sample_aspect_ratio.num && 1.0 != sample_aspect_ratio) {
3705  mov_write_tapt_tag(pb, track);
3706  }
3707  }
3708  if (is_clcp_track(track) && st->sample_aspect_ratio.num) {
3709  mov_write_tapt_tag(pb, track);
3710  }
3711  }
3712  mov_write_track_udta_tag(pb, mov, st);
3713  track->entry = entry_backup;
3714  track->chunkCount = chunk_backup;
3715  return update_size(pb, pos);
3716 }
3717 
3718 static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
3719 {
3720  int i, has_audio = 0, has_video = 0;
3721  int64_t pos = avio_tell(pb);
3722  int audio_profile = mov->iods_audio_profile;
3723  int video_profile = mov->iods_video_profile;
3724  for (i = 0; i < mov->nb_streams; i++) {
3725  if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3726  has_audio |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_AUDIO;
3727  has_video |= mov->tracks[i].par->codec_type == AVMEDIA_TYPE_VIDEO;
3728  }
3729  }
3730  if (audio_profile < 0)
3731  audio_profile = 0xFF - has_audio;
3732  if (video_profile < 0)
3733  video_profile = 0xFF - has_video;
3734  avio_wb32(pb, 0x0); /* size */
3735  ffio_wfourcc(pb, "iods");
3736  avio_wb32(pb, 0); /* version & flags */
3737  put_descr(pb, 0x10, 7);
3738  avio_wb16(pb, 0x004f);
3739  avio_w8(pb, 0xff);
3740  avio_w8(pb, 0xff);
3741  avio_w8(pb, audio_profile);
3742  avio_w8(pb, video_profile);
3743  avio_w8(pb, 0xff);
3744  return update_size(pb, pos);
3745 }
3746 
3747 static int mov_write_trex_tag(AVIOContext *pb, MOVTrack *track)
3748 {
3749  avio_wb32(pb, 0x20); /* size */
3750  ffio_wfourcc(pb, "trex");
3751  avio_wb32(pb, 0); /* version & flags */
3752  avio_wb32(pb, track->track_id); /* track ID */
3753  avio_wb32(pb, 1); /* default sample description index */
3754  avio_wb32(pb, 0); /* default sample duration */
3755  avio_wb32(pb, 0); /* default sample size */
3756  avio_wb32(pb, 0); /* default sample flags */
3757  return 0;
3758 }
3759 
3760 static int mov_write_mvex_tag(AVIOContext *pb, MOVMuxContext *mov)
3761 {
3762  int64_t pos = avio_tell(pb);
3763  int i;
3764  avio_wb32(pb, 0x0); /* size */
3765  ffio_wfourcc(pb, "mvex");
3766  for (i = 0; i < mov->nb_streams; i++)
3767  mov_write_trex_tag(pb, &mov->tracks[i]);
3768  return update_size(pb, pos);
3769 }
3770 
3771 static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
3772 {
3773  int max_track_id = 1, i;
3774  int64_t max_track_len = 0;
3775  int version;
3776  int timescale;
3777 
3778  for (i = 0; i < mov->nb_streams; i++) {
3779  if (mov->tracks[i].entry > 0 && mov->tracks[i].timescale) {
3780  int64_t max_track_len_temp = av_rescale_rnd(
3781  calc_pts_duration(mov, &mov->tracks[i]),
3782  mov->movie_timescale,
3783  mov->tracks[i].timescale,
3784  AV_ROUND_UP);
3785  if (max_track_len < max_track_len_temp)
3786  max_track_len = max_track_len_temp;
3787  if (max_track_id < mov->tracks[i].track_id)
3788  max_track_id = mov->tracks[i].track_id;
3789  }
3790  }
3791  /* If using delay_moov, make sure the output is the same as if no
3792  * samples had been written yet. */
3793  if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
3794  max_track_len = 0;
3795  max_track_id = 1;
3796  }
3797 
3798  version = max_track_len < UINT32_MAX ? 0 : 1;
3799  avio_wb32(pb, version == 1 ? 120 : 108); /* size */
3800 
3801  ffio_wfourcc(pb, "mvhd");
3802  avio_w8(pb, version);
3803  avio_wb24(pb, 0); /* flags */
3804  if (version == 1) {
3805  avio_wb64(pb, mov->time);
3806  avio_wb64(pb, mov->time);
3807  } else {
3808  avio_wb32(pb, mov->time); /* creation time */
3809  avio_wb32(pb, mov->time); /* modification time */
3810  }
3811 
3812  timescale = mov->movie_timescale;
3813  if (mov->mode == MODE_AVIF && !timescale)
3814  timescale = mov->tracks[0].timescale;
3815 
3816  avio_wb32(pb, timescale);
3817  (version == 1) ? avio_wb64(pb, max_track_len) : avio_wb32(pb, max_track_len); /* duration of longest track */
3818 
3819  avio_wb32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */
3820  avio_wb16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */
3821  ffio_fill(pb, 0, 2 + 2 * 4); /* reserved */
3822 
3823  /* Matrix structure */
3824  write_matrix(pb, 1, 0, 0, 1, 0, 0);
3825 
3826  avio_wb32(pb, 0); /* reserved (preview time) */
3827  avio_wb32(pb, 0); /* reserved (preview duration) */
3828  avio_wb32(pb, 0); /* reserved (poster time) */
3829  avio_wb32(pb, 0); /* reserved (selection time) */
3830  avio_wb32(pb, 0); /* reserved (selection duration) */
3831  avio_wb32(pb, 0); /* reserved (current time) */
3832  avio_wb32(pb, max_track_id + 1); /* Next track id */
3833  return 0x6c;
3834 }
3835 
3836 static int mov_write_itunes_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
3837  AVFormatContext *s)
3838 {
3839  avio_wb32(pb, 33); /* size */
3840  ffio_wfourcc(pb, "hdlr");
3841  avio_wb32(pb, 0);
3842  avio_wb32(pb, 0);
3843  ffio_wfourcc(pb, "mdir");
3844  ffio_wfourcc(pb, "appl");
3845  avio_wb32(pb, 0);
3846  avio_wb32(pb, 0);
3847  avio_w8(pb, 0);
3848  return 33;
3849 }
3850 
3851 /* helper function to write a data tag with the specified string as data */
3852 static int mov_write_string_data_tag(AVIOContext *pb, const char *data, int lang, int long_style)
3853 {
3854  size_t data_len = strlen(data);
3855  if (long_style) {
3856  int size = 16 + data_len;
3857  avio_wb32(pb, size); /* size */
3858  ffio_wfourcc(pb, "data");
3859  avio_wb32(pb, 1);
3860  avio_wb32(pb, 0);
3861  avio_write(pb, data, data_len);
3862  return size;
3863  } else {
3864  avio_wb16(pb, data_len); /* string length */
3865  if (!lang)
3866  lang = ff_mov_iso639_to_lang("und", 1);
3867  avio_wb16(pb, lang);
3868  avio_write(pb, data, data_len);
3869  return data_len + 4;
3870  }
3871 }
3872 
3873 static int mov_write_string_tag(AVIOContext *pb, const char *name,
3874  const char *value, int lang, int long_style)
3875 {
3876  int size = 0;
3877  if (value && value[0]) {
3878  int64_t pos = avio_tell(pb);
3879  avio_wb32(pb, 0); /* size */
3880  ffio_wfourcc(pb, name);
3881  mov_write_string_data_tag(pb, value, lang, long_style);
3882  size = update_size(pb, pos);
3883  }
3884  return size;
3885 }
3886 
3887 static AVDictionaryEntry *get_metadata_lang(AVFormatContext *s,
3888  const char *tag, int *lang)
3889 {
3890  int l, len, len2;
3891  AVDictionaryEntry *t, *t2 = NULL;
3892  char tag2[16];
3893 
3894  *lang = 0;
3895 
3896  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
3897  return NULL;
3898 
3899  len = strlen(t->key);
3900  snprintf(tag2, sizeof(tag2), "%s-", tag);
3901  while ((t2 = av_dict_get(s->metadata, tag2, t2, AV_DICT_IGNORE_SUFFIX))) {
3902  len2 = strlen(t2->key);
3903  if (len2 == len + 4 && !strcmp(t->value, t2->value)
3904  && (l = ff_mov_iso639_to_lang(&t2->key[len2 - 3], 1)) >= 0) {
3905  *lang = l;
3906  return t;
3907  }
3908  }
3909  return t;
3910 }
3911 
3912 static int mov_write_string_metadata(AVFormatContext *s, AVIOContext *pb,
3913  const char *name, const char *tag,
3914  int long_style)
3915 {
3916  int lang;
3917  AVDictionaryEntry *t = get_metadata_lang(s, tag, &lang);
3918  if (!t)
3919  return 0;
3920  return mov_write_string_tag(pb, name, t->value, lang, long_style);
3921 }
3922 
3923 /* iTunes bpm number */
3924 static int mov_write_tmpo_tag(AVIOContext *pb, AVFormatContext *s)
3925 {
3926  AVDictionaryEntry *t = av_dict_get(s->metadata, "tmpo", NULL, 0);
3927  int size = 0, tmpo = t ? atoi(t->value) : 0;
3928  if (tmpo) {
3929  size = 26;
3930  avio_wb32(pb, size);
3931  ffio_wfourcc(pb, "tmpo");
3932  avio_wb32(pb, size-8); /* size */
3933  ffio_wfourcc(pb, "data");
3934  avio_wb32(pb, 0x15); //type specifier
3935  avio_wb32(pb, 0);
3936  avio_wb16(pb, tmpo); // data
3937  }
3938  return size;
3939 }
3940 
3941 /* 3GPP TS 26.244 */
3942 static int mov_write_loci_tag(AVFormatContext *s, AVIOContext *pb)
3943 {
3944  int lang;
3945  int64_t pos = avio_tell(pb);
3946  double latitude, longitude, altitude;
3947  int32_t latitude_fix, longitude_fix, altitude_fix;
3948  AVDictionaryEntry *t = get_metadata_lang(s, "location", &lang);
3949  const char *ptr, *place = "";
3950  char *end;
3951  static const char *astronomical_body = "earth";
3952  if (!t)
3953  return 0;
3954 
3955  ptr = t->value;
3956  longitude = strtod(ptr, &end);
3957  if (end == ptr) {
3958  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3959  return 0;
3960  }
3961  ptr = end;
3962  latitude = strtod(ptr, &end);
3963  if (end == ptr) {
3964  av_log(s, AV_LOG_WARNING, "malformed location metadata\n");
3965  return 0;
3966  }
3967  ptr = end;
3968  altitude = strtod(ptr, &end);
3969  /* If no altitude was present, the default 0 should be fine */
3970  if (*end == '/')
3971  place = end + 1;
3972 
3973  latitude_fix = (int32_t) ((1 << 16) * latitude);
3974  longitude_fix = (int32_t) ((1 << 16) * longitude);
3975  altitude_fix = (int32_t) ((1 << 16) * altitude);
3976 
3977  avio_wb32(pb, 0); /* size */
3978  ffio_wfourcc(pb, "loci"); /* type */
3979  avio_wb32(pb, 0); /* version + flags */
3980  avio_wb16(pb, lang);
3981  avio_write(pb, place, strlen(place) + 1);
3982  avio_w8(pb, 0); /* role of place (0 == shooting location, 1 == real location, 2 == fictional location) */
3983  avio_wb32(pb, latitude_fix);
3984  avio_wb32(pb, longitude_fix);
3985  avio_wb32(pb, altitude_fix);
3986  avio_write(pb, astronomical_body, strlen(astronomical_body) + 1);
3987  avio_w8(pb, 0); /* additional notes, null terminated string */
3988 
3989  return update_size(pb, pos);
3990 }
3991 
3992 /* iTunes track or disc number */
3993 static int mov_write_trkn_tag(AVIOContext *pb, MOVMuxContext *mov,
3994  AVFormatContext *s, int disc)
3995 {
3996  AVDictionaryEntry *t = av_dict_get(s->metadata,
3997  disc ? "disc" : "track",
3998  NULL, 0);
3999  int size = 0, track = t ? atoi(t->value) : 0;
4000  if (track) {
4001  int tracks = 0;
4002  char *slash = strchr(t->value, '/');
4003  if (slash)
4004  tracks = atoi(slash + 1);
4005  avio_wb32(pb, 32); /* size */
4006  ffio_wfourcc(pb, disc ? "disk" : "trkn");
4007  avio_wb32(pb, 24); /* size */
4008  ffio_wfourcc(pb, "data");
4009  avio_wb32(pb, 0); // 8 bytes empty
4010  avio_wb32(pb, 0);
4011  avio_wb16(pb, 0); // empty
4012  avio_wb16(pb, track); // track / disc number
4013  avio_wb16(pb, tracks); // total track / disc number
4014  avio_wb16(pb, 0); // empty
4015  size = 32;
4016  }
4017  return size;
4018 }
4019 
4020 static int mov_write_int8_metadata(AVFormatContext *s, AVIOContext *pb,
4021  const char *name, const char *tag,
4022  int len)
4023 {
4024  AVDictionaryEntry *t = NULL;
4025  uint8_t num;
4026  int size = 24 + len;
4027 
4028  if (len != 1 && len != 4)
4029  return -1;
4030 
4031  if (!(t = av_dict_get(s->metadata, tag, NULL, 0)))
4032  return 0;
4033  num = atoi(t->value);
4034 
4035  avio_wb32(pb, size);
4036  ffio_wfourcc(pb, name);
4037  avio_wb32(pb, size - 8);
4038  ffio_wfourcc(pb, "data");
4039  avio_wb32(pb, 0x15);
4040  avio_wb32(pb, 0);
4041  if (len==4) avio_wb32(pb, num);
4042  else avio_w8 (pb, num);
4043 
4044  return size;
4045 }
4046 
4047 static int mov_write_covr(AVIOContext *pb, AVFormatContext *s)
4048 {
4049  MOVMuxContext *mov = s->priv_data;
4050  int64_t pos = 0;
4051  int i;
4052 
4053  for (i = 0; i < s->nb_streams; i++) {
4054  MOVTrack *trk = &mov->tracks[i];
4055 
4056  if (!is_cover_image(trk->st) || trk->cover_image->size <= 0)
4057  continue;
4058 
4059  if (!pos) {
4060  pos = avio_tell(pb);
4061  avio_wb32(pb, 0);
4062  ffio_wfourcc(pb, "covr");
4063  }
4064  avio_wb32(pb, 16 + trk->cover_image->size);
4065  ffio_wfourcc(pb, "data");
4066  avio_wb32(pb, trk->tag);
4067  avio_wb32(pb , 0);
4068  avio_write(pb, trk->cover_image->data, trk->cover_image->size);
4069  }
4070 
4071  return pos ? update_size(pb, pos) : 0;
4072 }
4073 
4074 /* iTunes meta data list */
4075 static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
4076  AVFormatContext *s)
4077 {
4078  int64_t pos = avio_tell(pb);
4079  avio_wb32(pb, 0); /* size */
4080  ffio_wfourcc(pb, "ilst");
4081  mov_write_string_metadata(s, pb, "\251nam", "title" , 1);
4082  mov_write_string_metadata(s, pb, "\251ART", "artist" , 1);
4083  mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
4084  mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
4085  mov_write_string_metadata(s, pb, "\251alb", "album" , 1);
4086  mov_write_string_metadata(s, pb, "\251day", "date" , 1);
4087  if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {
4088  if (!(s->flags & AVFMT_FLAG_BITEXACT))
4089  mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
4090  }
4091  mov_write_string_metadata(s, pb, "\251cmt", "comment" , 1);
4092  mov_write_string_metadata(s, pb, "\251gen", "genre" , 1);
4093  mov_write_string_metadata(s, pb, "cprt", "copyright", 1);
4094  mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
4095  mov_write_string_metadata(s, pb, "\251lyr", "lyrics" , 1);
4096  mov_write_string_metadata(s, pb, "desc", "description",1);
4097  mov_write_string_metadata(s, pb, "ldes", "synopsis" , 1);
4098  mov_write_string_metadata(s, pb, "tvsh", "show" , 1);
4099  mov_write_string_metadata(s, pb, "tven", "episode_id",1);
4100  mov_write_string_metadata(s, pb, "tvnn", "network" , 1);
4101  mov_write_string_metadata(s, pb, "keyw", "keywords" , 1);
4102  mov_write_int8_metadata (s, pb, "tves", "episode_sort",4);
4103  mov_write_int8_metadata (s, pb, "tvsn", "season_number",4);
4104  mov_write_int8_metadata (s, pb, "stik", "media_type",1);
4105  mov_write_int8_metadata (s, pb, "hdvd", "hd_video", 1);
4106  mov_write_int8_metadata (s, pb, "pgap", "gapless_playback",1);
4107  mov_write_int8_metadata (s, pb, "cpil", "compilation", 1);
4108  mov_write_covr(pb, s);
4109  mov_write_trkn_tag(pb, mov, s, 0); // track number
4110  mov_write_trkn_tag(pb, mov, s, 1); // disc number
4111  mov_write_tmpo_tag(pb, s);
4112  return update_size(pb, pos);
4113 }
4114 
4115 static int mov_write_mdta_hdlr_tag(AVIOContext *pb, MOVMuxContext *mov,
4116  AVFormatContext *s)
4117 {
4118  avio_wb32(pb, 33); /* size */
4119  ffio_wfourcc(pb, "hdlr");
4120  avio_wb32(pb, 0);
4121  avio_wb32(pb, 0);
4122  ffio_wfourcc(pb, "mdta");
4123  avio_wb32(pb, 0);
4124  avio_wb32(pb, 0);
4125  avio_wb32(pb, 0);
4126  avio_w8(pb, 0);
4127  return 33;
4128 }
4129 
4130 static int mov_write_mdta_keys_tag(AVIOContext *pb, MOVMuxContext *mov,
4131  AVFormatContext *s)
4132 {
4133  const AVDictionaryEntry *t = NULL;
4134  int64_t pos = avio_tell(pb);
4135  int64_t curpos, entry_pos;
4136  int count = 0;
4137 
4138  avio_wb32(pb, 0); /* size */
4139  ffio_wfourcc(pb, "keys");
4140  avio_wb32(pb, 0);
4141  entry_pos = avio_tell(pb);
4142  avio_wb32(pb, 0); /* entry count */
4143 
4144  while (t = av_dict_iterate(s->metadata, t)) {
4145  size_t key_len = strlen(t->key);
4146  avio_wb32(pb, key_len + 8);
4147  ffio_wfourcc(pb, "mdta");
4148  avio_write(pb, t->key, key_len);
4149  count += 1;
4150  }
4151  curpos = avio_tell(pb);
4152  avio_seek(pb, entry_pos, SEEK_SET);
4153  avio_wb32(pb, count); // rewrite entry count
4154  avio_seek(pb, curpos, SEEK_SET);
4155 
4156  return update_size(pb, pos);
4157 }
4158 
4159 static int mov_write_mdta_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
4160  AVFormatContext *s)
4161 {
4162  const AVDictionaryEntry *t = NULL;
4163  int64_t pos = avio_tell(pb);
4164  int count = 1; /* keys are 1-index based */
4165 
4166  avio_wb32(pb, 0); /* size */
4167  ffio_wfourcc(pb, "ilst");
4168 
4169  while (t = av_dict_iterate(s->metadata, t)) {
4170  int64_t entry_pos = avio_tell(pb);
4171  avio_wb32(pb, 0); /* size */
4172  avio_wb32(pb, count); /* key */
4173  mov_write_string_data_tag(pb, t->value, 0, 1);
4174  update_size(pb, entry_pos);
4175  count += 1;
4176  }
4177  return update_size(pb, pos);
4178 }
4179 
4180 /* meta data tags */
4181 static int mov_write_meta_tag(AVIOContext *pb, MOVMuxContext *mov,
4182  AVFormatContext *s)
4183 {
4184  int size = 0;
4185  int64_t pos = avio_tell(pb);
4186  avio_wb32(pb, 0); /* size */
4187  ffio_wfourcc(pb, "meta");
4188  avio_wb32(pb, 0);
4189  if (mov->flags & FF_MOV_FLAG_USE_MDTA) {
4190  mov_write_mdta_hdlr_tag(pb, mov, s);
4191  mov_write_mdta_keys_tag(pb, mov, s);
4192  mov_write_mdta_ilst_tag(pb, mov, s);
4193  } else if (mov->mode == MODE_AVIF) {
4194  mov_write_hdlr_tag(s, pb, &mov->tracks[0]);
4195  // We always write the primary item id as 1 since only one track is
4196  // supported for AVIF.
4197  mov_write_pitm_tag(pb, 1);
4198  mov_write_iloc_tag(pb, mov, s);
4199  mov_write_iinf_tag(pb, mov, s);
4200  if (s->nb_streams > 1)
4201  mov_write_iref_tag(pb, mov, s);
4202  mov_write_iprp_tag(pb, mov, s);
4203  } else {
4204  /* iTunes metadata tag */
4205  mov_write_itunes_hdlr_tag(pb, mov, s);
4206  mov_write_ilst_tag(pb, mov, s);
4207  }
4208  size = update_size(pb, pos);
4209  return size;
4210 }
4211 
4212 static int mov_write_raw_metadata_tag(AVFormatContext *s, AVIOContext *pb,
4213  const char *name, const char *key)
4214 {
4215  int len;
4216  AVDictionaryEntry *t;
4217 
4218  if (!(t = av_dict_get(s->metadata, key, NULL, 0)))
4219  return 0;
4220 
4221  len = strlen(t->value);
4222  if (len > 0) {
4223  int size = len + 8;
4224  avio_wb32(pb, size);
4225  ffio_wfourcc(pb, name);
4226  avio_write(pb, t->value, len);
4227  return size;
4228  }
4229  return 0;
4230 }
4231 
4232 static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
4233 {
4234  int val;
4235  while (*b) {
4236  GET_UTF8(val, *b++, return -1;)
4237  avio_wb16(pb,