10l: scratchpad could be allocated before its size was known.
[libav.git] / libavformat / mov.c
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1/*
2 * MOV decoder.
19720f15 3 * Copyright (c) 2001 Fabrice Bellard.
6cea494e 4 *
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5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
6cea494e 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
6cea494e 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
6cea494e 14 *
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15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
6cea494e 18 */
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19
20#include <limits.h>
21
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22#include "avformat.h"
23#include "avi.h"
24
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25#ifdef CONFIG_ZLIB
26#include <zlib.h>
27#endif
28
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29/*
30 * First version by Francois Revol revol@free.fr
baf25c9d 31 * Seek function by Gael Chardon gael.dev@4now.net
5ca1d879 32 *
6cea494e 33 * Features and limitations:
5ca1d879 34 * - reads most of the QT files I have (at least the structure),
6cea494e 35 * the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
0147f198 36 * FIXED, Francois Revol, 07/17/2002
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37 * - ffmpeg has nearly none of the usual QuickTime codecs,
38 * although I succesfully dumped raw and mp3 audio tracks off .mov files.
39 * Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
40 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
41 * (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
42 * http://mpeg.telecomitalialab.com/faq.htm
43 * - the code is quite ugly... maybe I won't do it recursive next time :-)
baf25c9d 44 * - seek is not supported with files that contain edit list
5ca1d879 45 *
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46 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47 * when coding this :) (it's a writer anyway)
5ca1d879 48 *
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49 * Reference documents:
50 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
51 * Apple:
baf25c9d 52 * http://developer.apple.com/documentation/QuickTime/QTFF/
15c8dbe7 53 * http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
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54 * QuickTime is a trademark of Apple (AFAIK :))
55 */
56
c9a65ca8 57//#define DEBUG
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58#ifdef DEBUG
59#include <stdio.h>
60#include <fcntl.h>
61#endif
6cea494e 62
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63#include "qtpalette.h"
64
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65
66/* Allows seeking (MOV_SPLIT_CHUNKS should also be defined) */
67#define MOV_SEEK
68
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69/* allows chunk splitting - should work now... */
70/* in case you can't read a file, try commenting */
71#define MOV_SPLIT_CHUNKS
72
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73/* Special handling for movies created with Minolta Dimaxe Xi*/
74/* this fix should not interfere with other .mov files, but just in case*/
75#define MOV_MINOLTA_FIX
76
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77/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
78/* so we first list them as this, then clean up the list of streams we give back, */
79/* getting rid of these */
b6a17df4 80#define CODEC_TYPE_MOV_OTHER (enum CodecType) 2
6cea494e 81
a266644f 82static const CodecTag mov_video_tags[] = {
6cea494e 83/* { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
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84/* { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
85/* { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
53e27dd5 86/* { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
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87/* Graphics */
88/* Animation */
89/* Apple video */
90/* Kodak Photo CD */
3ffe3793 91 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
6cea494e 92 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
3ffe3793 93 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
6cea494e 94 { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
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95 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
96/* { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
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97/* { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
98/* Sorenson video */
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99 { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
100 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
3ffe3793 101 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
8b82a956 102 { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
0e7eed09 103 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
6cea494e 104 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
8dafdb88 105 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
6cea494e 106/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
0147f198 107 { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
25fa62e1 108 { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
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109 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
110 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
53e27dd5 111/* { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
d86053a4 112 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
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113 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
114 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
1dc1ed99 115 { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
b595afaa 116 { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
070ed1bc 117 { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
d08d7142 118 { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
169eb021 119 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
5ca1d879 120 { CODEC_ID_NONE, 0 },
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121};
122
a266644f 123static const CodecTag mov_audio_tags[] = {
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124/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
125 { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
5ca1d879 126 /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
5cd62665 127 { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
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128 { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
129 { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
130 { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
0147f198 131 { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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132 { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
133 { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
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134
135 { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
136 { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
137 { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
138/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
139/* MP4 tags */
4cb3f3b6 140 { CODEC_ID_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
5ca1d879 141 /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
891f64b3 142 { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
d663a1fd 143 { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
8dafdb88 144 { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
5ca1d879 145 { CODEC_ID_NONE, 0 },
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146};
147
148/* the QuickTime file format is quite convoluted...
149 * it has lots of index tables, each indexing something in another one...
150 * Here we just use what is needed to read the chunks
151 */
152
153typedef struct MOV_sample_to_chunk_tbl {
154 long first;
155 long count;
156 long id;
157} MOV_sample_to_chunk_tbl;
158
5cd62665 159typedef struct {
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160 uint32_t type;
161 int64_t offset;
162 int64_t size; /* total size (excluding the size and type fields) */
163} MOV_atom_t;
164
165typedef struct {
166 int seed;
167 int flags;
168 int size;
169 void* clrs;
170} MOV_ctab_t;
171
172typedef struct {
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173 uint8_t version;
174 uint32_t flags; // 24bit
175
176 /* 0x03 ESDescrTag */
177 uint16_t es_id;
178#define MP4ODescrTag 0x01
179#define MP4IODescrTag 0x02
180#define MP4ESDescrTag 0x03
181#define MP4DecConfigDescrTag 0x04
182#define MP4DecSpecificDescrTag 0x05
183#define MP4SLConfigDescrTag 0x06
184#define MP4ContentIdDescrTag 0x07
185#define MP4SupplContentIdDescrTag 0x08
186#define MP4IPIPtrDescrTag 0x09
187#define MP4IPMPPtrDescrTag 0x0A
188#define MP4IPMPDescrTag 0x0B
189#define MP4RegistrationDescrTag 0x0D
190#define MP4ESIDIncDescrTag 0x0E
191#define MP4ESIDRefDescrTag 0x0F
192#define MP4FileIODescrTag 0x10
193#define MP4FileODescrTag 0x11
194#define MP4ExtProfileLevelDescrTag 0x13
195#define MP4ExtDescrTagsStart 0x80
196#define MP4ExtDescrTagsEnd 0xFE
197 uint8_t stream_priority;
198
199 /* 0x04 DecConfigDescrTag */
200 uint8_t object_type_id;
201 uint8_t stream_type;
202 /* XXX: really streamType is
203 * only 6bit, followed by:
204 * 1bit upStream
205 * 1bit reserved
206 */
207 uint32_t buffer_size_db; // 24
208 uint32_t max_bitrate;
209 uint32_t avg_bitrate;
210
211 /* 0x05 DecSpecificDescrTag */
212 uint8_t decoder_cfg_len;
213 uint8_t *decoder_cfg;
214
215 /* 0x06 SLConfigDescrTag */
216 uint8_t sl_config_len;
217 uint8_t *sl_config;
218} MOV_esds_t;
219
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220struct MOVParseTableEntry;
221
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222typedef struct MOVStreamContext {
223 int ffindex; /* the ffmpeg stream id */
224 int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
225 long next_chunk;
226 long chunk_count;
0c1a9eda 227 int64_t *chunk_offsets;
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228 int32_t stts_count;
229 uint64_t *stts_data; /* concatenated data from the time-to-sample atom (count|duration) */
230 int32_t edit_count; /* number of 'edit' (elst atom) */
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231 long sample_to_chunk_sz;
232 MOV_sample_to_chunk_tbl *sample_to_chunk;
3ffe3793 233 long sample_to_chunk_index;
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234 long sample_size;
235 long sample_count;
236 long *sample_sizes;
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237 long keyframe_count;
238 long *keyframes;
5cd62665 239 int time_scale;
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240 long current_sample;
241 long left_in_chunk; /* how many samples before next chunk */
0e7eed09 242 /* specific MPEG4 header which is added at the beginning of the stream */
7fea94ce 243 unsigned int header_len;
0e7eed09 244 uint8_t *header_data;
5ca1d879 245 MOV_esds_t esds;
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246} MOVStreamContext;
247
248typedef struct MOVContext {
249 int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
250 AVFormatContext *fc;
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251 int time_scale;
252 int duration; /* duration of the longest track */
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253 int found_moov; /* when both 'moov' and 'mdat' sections has been found */
254 int found_mdat; /* we suppose we have enough data to read the file */
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255 int64_t mdat_size;
256 int64_t mdat_offset;
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257 int total_streams;
258 /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
259 * but we need the info to be able to skip data from those streams in the 'mdat' section
260 */
261 MOVStreamContext *streams[MAX_STREAMS];
5cd62665 262
0c1a9eda 263 int64_t next_chunk_offset;
5cd62665 264 MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
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265 int ctab_size;
266 MOV_ctab_t **ctab; /* color tables */
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267 const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
268 /* NOTE: for recursion save to/ restore from local variable! */
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269
270 AVPaletteControl palette_control;
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271} MOVContext;
272
273
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274/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
275
276/* those functions parse an atom */
277/* return code:
278 1: found what I wanted, exit
279 0: continue to parse next atom
280 -1: error occured, exit
281 */
5ca1d879 282typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
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283
284/* links atom IDs to parse functions */
285typedef struct MOVParseTableEntry {
0c1a9eda 286 uint32_t type;
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287 mov_parse_function func;
288} MOVParseTableEntry;
289
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290#ifdef DEBUG
291/*
292 * XXX: static sux, even more in a multithreaded environment...
293 * Avoid them. This is here just to help debugging.
294 */
295static int debug_indent = 0;
296void print_atom(const char *str, MOV_atom_t atom)
297{
298 unsigned int tag, i;
299 tag = (unsigned int) atom.type;
300 i=debug_indent;
301 if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
302 while(i--)
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303 av_log(NULL, AV_LOG_DEBUG, "|");
304 av_log(NULL, AV_LOG_DEBUG, "parse:");
305 av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
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306 str, tag & 0xff,
307 (tag >> 8) & 0xff,
308 (tag >> 16) & 0xff,
309 (tag >> 24) & 0xff,
310 (unsigned int)atom.offset,
311 (unsigned int)atom.size);
312 assert((unsigned int)atom.size < 0x7fffffff);// catching errors
313}
314#else
315#define print_atom(a,b)
316#endif
317
318
319static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 320{
5ca1d879 321 print_atom("leaf", atom);
b6a17df4 322
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323 if (atom.size>1)
324 url_fskip(pb, atom.size);
325/* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
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326 return 0;
327}
328
5ca1d879 329static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 330{
b6a17df4 331 int64_t total_size = 0;
5ca1d879 332 MOV_atom_t a;
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333 int i;
334 int err = 0;
5ca1d879 335
6cea494e 336#ifdef DEBUG
5ca1d879 337 print_atom("default", atom);
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338 debug_indent++;
339#endif
5cd62665 340
5ca1d879 341 a.offset = atom.offset;
6cea494e 342
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343 if (atom.size < 0)
344 atom.size = 0x7fffffffffffffffLL;
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345 while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
346 a.size = atom.size;
347 a.type=0L;
348 if(atom.size >= 8) {
349 a.size = get_be32(pb);
350 a.type = get_le32(pb);
6cea494e 351 }
5cd62665 352 total_size += 8;
5ca1d879 353 a.offset += 8;
baf25c9d 354 //av_log(NULL, AV_LOG_DEBUG, "type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
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355 if (a.size == 1) { /* 64 bit extended size */
356 a.size = get_be64(pb) - 8;
357 a.offset += 8;
358 total_size += 8;
6cea494e 359 }
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360 if (a.size == 0) {
361 a.size = atom.size - total_size;
362 if (a.size <= 8)
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363 break;
364 }
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365 for (i = 0; c->parse_table[i].type != 0L
366 && c->parse_table[i].type != a.type; i++)
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367 /* empty */;
368
5ca1d879 369 a.size -= 8;
baf25c9d 370// av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
b6a17df4 371 if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
5ca1d879 372// url_seek(pb, atom.offset+atom.size, SEEK_SET);
6cea494e 373#ifdef DEBUG
5ca1d879 374 print_atom("unknown", a);
6cea494e 375#endif
5ca1d879 376 url_fskip(pb, a.size);
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377 } else {
378#ifdef DEBUG
379 //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
380 //print_atom(b, type, offset, size);
381#endif
5ca1d879 382 err = (c->parse_table[i].func)(c, pb, a);
b6a17df4 383 }
6cea494e 384
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385 a.offset += a.size;
386 total_size += a.size;
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387 }
388
5ca1d879 389 if (!err && total_size < atom.size && atom.size < 0x7ffff) {
baf25c9d 390 //av_log(NULL, AV_LOG_DEBUG, "RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
5ca1d879 391 url_fskip(pb, atom.size - total_size);
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392 }
393
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394#ifdef DEBUG
395 debug_indent--;
396#endif
397 return err;
398}
399
5ca1d879 400static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 401{
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402 unsigned int len;
403 MOV_ctab_t *t;
404 //url_fskip(pb, atom.size); // for now
405 c->ctab = av_realloc(c->ctab, ++c->ctab_size);
406 t = c->ctab[c->ctab_size];
407 t->seed = get_be32(pb);
408 t->flags = get_be16(pb);
409 t->size = get_be16(pb) + 1;
410 len = 2 * t->size * 4;
411 if (len > 0) {
412 t->clrs = av_malloc(len); // 16bit A R G B
413 if (t->clrs)
414 get_buffer(pb, t->clrs, len);
3ffe3793 415 }
5cd62665 416
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417 return 0;
418}
419
5ca1d879 420static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 421{
5ca1d879 422 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
3ffe3793 423 int len = 0;
0c1a9eda 424 uint32_t type;
0c1a9eda 425 uint32_t ctype;
b6a17df4 426
5ca1d879 427 print_atom("hdlr", atom);
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428
429 get_byte(pb); /* version */
430 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
431
432 /* component type */
433 ctype = get_le32(pb);
434 type = get_le32(pb); /* component subtype */
435
436#ifdef DEBUG
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437 av_log(NULL, AV_LOG_DEBUG, "ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
438 av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
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439#endif
440#ifdef DEBUG
441/* XXX: yeah this is ugly... */
442 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
443 if(type == MKTAG('v', 'i', 'd', 'e'))
444 puts("hdlr: vide");
445 else if(type == MKTAG('s', 'o', 'u', 'n'))
446 puts("hdlr: soun");
447 } else if(ctype == 0) { /* MP4 */
448 if(type == MKTAG('v', 'i', 'd', 'e'))
449 puts("hdlr: vide");
450 else if(type == MKTAG('s', 'o', 'u', 'n'))
451 puts("hdlr: soun");
452 else if(type == MKTAG('o', 'd', 's', 'm'))
453 puts("hdlr: odsm");
454 else if(type == MKTAG('s', 'd', 's', 'm'))
455 puts("hdlr: sdsm");
456 } else puts("hdlr: meta");
457#endif
458
459 if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
0147f198
FR
460 /* helps parsing the string hereafter... */
461 c->mp4 = 0;
6cea494e
ZK
462 if(type == MKTAG('v', 'i', 'd', 'e'))
463 st->codec.codec_type = CODEC_TYPE_VIDEO;
464 else if(type == MKTAG('s', 'o', 'u', 'n'))
465 st->codec.codec_type = CODEC_TYPE_AUDIO;
466 } else if(ctype == 0) { /* MP4 */
0147f198
FR
467 /* helps parsing the string hereafter... */
468 c->mp4 = 1;
6cea494e
ZK
469 if(type == MKTAG('v', 'i', 'd', 'e'))
470 st->codec.codec_type = CODEC_TYPE_VIDEO;
471 else if(type == MKTAG('s', 'o', 'u', 'n'))
472 st->codec.codec_type = CODEC_TYPE_AUDIO;
473 }
474 get_be32(pb); /* component manufacture */
475 get_be32(pb); /* component flags */
476 get_be32(pb); /* component flags mask */
477
5ca1d879 478 if(atom.size <= 24)
6cea494e
ZK
479 return 0; /* nothing left to read */
480 /* XXX: MP4 uses a C string, not a pascal one */
481 /* component name */
0147f198
FR
482
483 if(c->mp4) {
484 /* .mp4: C string */
5ca1d879 485 while(get_byte(pb) && (++len < (atom.size - 24)));
0147f198
FR
486 } else {
487 /* .mov: PASCAL string */
9ed83b0a
ZK
488#ifdef DEBUG
489 char* buf;
490#endif
0147f198 491 len = get_byte(pb);
5ca1d879 492#ifdef DEBUG
b6a17df4
ZK
493 buf = (uint8_t*) av_malloc(len+1);
494 if (buf) {
495 get_buffer(pb, buf, len);
b6a17df4 496 buf[len] = '\0';
baf25c9d 497 av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
b6a17df4
ZK
498 av_free(buf);
499 } else
6cea494e 500#endif
5ca1d879 501 url_fskip(pb, len);
6cea494e 502 }
5cd62665 503
3c13647a 504 url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
6cea494e
ZK
505 return 0;
506}
507
5ca1d879 508static int mov_mp4_read_descr_len(ByteIOContext *pb)
0e7eed09 509{
5cd62665 510 int len = 0;
5ca1d879
ZK
511 int count = 4;
512 while (count--) {
5cd62665
ZK
513 int c = get_byte(pb);
514 len = (len << 7) | (c & 0x7f);
5ca1d879
ZK
515 if (!(c & 0x80))
516 break;
0e7eed09
FB
517 }
518 return len;
519}
520
5ca1d879 521static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
0e7eed09
FB
522{
523 int len;
524 *tag = get_byte(pb);
5ca1d879 525 len = mov_mp4_read_descr_len(pb);
0e7eed09 526#ifdef DEBUG
baf25c9d 527 av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
0e7eed09
FB
528#endif
529 return len;
530}
531
5cd62665
ZK
532static inline unsigned int get_be24(ByteIOContext *s)
533{
534 unsigned int val;
535 val = get_byte(s) << 16;
536 val |= get_byte(s) << 8;
537 val |= get_byte(s);
538 return val;
539}
540
5ca1d879 541static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
5cd62665 542{
5cd62665
ZK
543 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
544 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
5ca1d879 545 int64_t start_pos = url_ftell(pb);
5cd62665 546 int tag, len;
b6a17df4 547
5ca1d879 548 print_atom("esds", atom);
5cd62665
ZK
549
550 /* Well, broken but suffisant for some MP4 streams */
551 get_be32(pb); /* version + flags */
5ca1d879 552 len = mov_mp4_read_descr(pb, &tag);
5cd62665
ZK
553 if (tag == MP4ESDescrTag) {
554 get_be16(pb); /* ID */
555 get_byte(pb); /* priority */
556 } else
557 get_be16(pb); /* ID */
558
5ca1d879 559 len = mov_mp4_read_descr(pb, &tag);
5cd62665
ZK
560 if (tag == MP4DecConfigDescrTag) {
561 sc->esds.object_type_id = get_byte(pb);
5ca1d879
ZK
562 sc->esds.stream_type = get_byte(pb);
563 sc->esds.buffer_size_db = get_be24(pb);
5cd62665
ZK
564 sc->esds.max_bitrate = get_be32(pb);
565 sc->esds.avg_bitrate = get_be32(pb);
566
5ca1d879 567 len = mov_mp4_read_descr(pb, &tag);
baf25c9d 568 //av_log(NULL, AV_LOG_DEBUG, "LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
5cd62665
ZK
569 if (tag == MP4DecSpecificDescrTag) {
570#ifdef DEBUG
baf25c9d 571 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
5cd62665 572#endif
3129cd01 573 st->codec.extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
5ca1d879
ZK
574 if (st->codec.extradata) {
575 get_buffer(pb, st->codec.extradata, len);
576 st->codec.extradata_size = len;
5cd62665
ZK
577 }
578 }
579 }
580 /* in any case, skip garbage */
5ca1d879 581 url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
5cd62665
ZK
582 return 0;
583}
584
5ca1d879
ZK
585/* this atom contains actual media data */
586static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 587{
5ca1d879
ZK
588 print_atom("mdat", atom);
589
590 if(atom.size == 0) /* wrong one (MP4) */
591 return 0;
592 c->found_mdat=1;
593 c->mdat_offset = atom.offset;
594 c->mdat_size = atom.size;
595 if(c->found_moov)
596 return 1; /* found both, just go */
597 url_fskip(pb, atom.size);
598 return 0; /* now go for moov */
599}
600
601/* this atom should contain all header atoms */
602static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
603{
604 int err;
b6a17df4 605
5ca1d879 606 print_atom("moov", atom);
b6a17df4 607
5ca1d879
ZK
608 err = mov_read_default(c, pb, atom);
609 /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
610 /* so we don't parse the whole file if over a network */
611 c->found_moov=1;
612 if(c->found_mdat)
613 return 1; /* found both, just go */
614 return 0; /* now go for mdat */
615}
616
617
618static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
619{
5ca1d879
ZK
620 print_atom("mdhd", atom);
621
622 get_byte(pb); /* version */
623
624 get_byte(pb); get_byte(pb);
625 get_byte(pb); /* flags */
626
627 get_be32(pb); /* creation time */
628 get_be32(pb); /* modification time */
629
baf25c9d 630 c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
5ca1d879
ZK
631
632#ifdef DEBUG
baf25c9d 633 av_log(NULL, AV_LOG_DEBUG, "track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->time_scale); /* time scale */
5ca1d879
ZK
634#endif
635 get_be32(pb); /* duration */
636
637 get_be16(pb); /* language */
638 get_be16(pb); /* quality */
639
640 return 0;
641}
642
643static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
644{
645 print_atom("mvhd", atom);
646
647 get_byte(pb); /* version */
648 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
649
650 get_be32(pb); /* creation time */
651 get_be32(pb); /* modification time */
652 c->time_scale = get_be32(pb); /* time scale */
653#ifdef DEBUG
baf25c9d 654 av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
5ca1d879
ZK
655#endif
656 c->duration = get_be32(pb); /* duration */
657 get_be32(pb); /* preferred scale */
658
659 get_be16(pb); /* preferred volume */
660
661 url_fskip(pb, 10); /* reserved */
662
663 url_fskip(pb, 36); /* display matrix */
664
665 get_be32(pb); /* preview time */
666 get_be32(pb); /* preview duration */
667 get_be32(pb); /* poster time */
668 get_be32(pb); /* selection time */
669 get_be32(pb); /* selection duration */
670 get_be32(pb); /* current time */
671 get_be32(pb); /* next track ID */
672
673 return 0;
674}
675
9ed83b0a
ZK
676static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
677{
678 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
679
680 // currently SVQ3 decoder expect full STSD header - so let's fake it
681 // this should be fixed and just SMI header should be passed
682 av_free(st->codec.extradata);
683 st->codec.extradata_size = 0x5a + atom.size;
3129cd01 684 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
9ed83b0a
ZK
685
686 if (st->codec.extradata) {
9ed83b0a
ZK
687 strcpy(st->codec.extradata, "SVQ3"); // fake
688 get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
baf25c9d 689 //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
9ed83b0a
ZK
690 } else
691 url_fskip(pb, atom.size);
692
693 return 0;
694}
5ca1d879 695
169eb021
MM
696static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
697{
698 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
699
700 av_free(st->codec.extradata);
701
702 st->codec.extradata_size = atom.size;
703 st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
704
705 if (st->codec.extradata) {
706 get_buffer(pb, st->codec.extradata, atom.size);
707 } else
708 url_fskip(pb, atom.size);
709
710 return 0;
711}
712
5ca1d879
ZK
713static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
714{
715 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
716 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
717 int entries, i;
718
719 print_atom("stco", atom);
720
721 get_byte(pb); /* version */
722 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
723
724 entries = get_be32(pb);
725 sc->chunk_count = entries;
726 sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
727 if (!sc->chunk_offsets)
728 return -1;
729 if (atom.type == MKTAG('s', 't', 'c', 'o')) {
730 for(i=0; i<entries; i++) {
731 sc->chunk_offsets[i] = get_be32(pb);
732 }
733 } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
734 for(i=0; i<entries; i++) {
735 sc->chunk_offsets[i] = get_be64(pb);
736 }
737 } else
738 return -1;
739#ifdef DEBUG
740/*
741 for(i=0; i<entries; i++) {
baf25c9d 742 av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
5ca1d879
ZK
743 }
744*/
745#endif
746 return 0;
747}
748
749static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
750{
751 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
fd6e513e 752 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
5ca1d879
ZK
753 int entries, frames_per_sample;
754 uint32_t format;
755
b595afaa
MM
756 /* for palette traversal */
757 int color_depth;
758 int color_start;
759 int color_count;
760 int color_end;
761 int color_index;
762 int color_dec;
763 int color_greyscale;
764 unsigned char *color_table;
765 int j;
766 unsigned char r, g, b;
767
5ca1d879 768 print_atom("stsd", atom);
6cea494e
ZK
769
770 get_byte(pb); /* version */
771 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
772
6cea494e
ZK
773 entries = get_be32(pb);
774
891f64b3 775 while(entries--) { //Parsing Sample description table
b6a17df4 776 enum CodecID id;
5ca1d879 777 int size = get_be32(pb); /* size */
6cea494e 778 format = get_le32(pb); /* data format */
5cd62665 779
6cea494e
ZK
780 get_be32(pb); /* reserved */
781 get_be16(pb); /* reserved */
782 get_be16(pb); /* index */
0e7eed09
FB
783
784 /* for MPEG4: set codec type by looking for it */
785 id = codec_get_id(mov_video_tags, format);
786 if (id >= 0) {
787 AVCodec *codec;
b6a17df4 788 codec = avcodec_find_decoder(id);
0e7eed09 789 if (codec)
b6a17df4 790 st->codec.codec_type = codec->type;
0e7eed09
FB
791 }
792#ifdef DEBUG
baf25c9d 793 av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
5cd62665 794 size,
0e7eed09
FB
795 (format >> 0) & 0xff,
796 (format >> 8) & 0xff,
797 (format >> 16) & 0xff,
798 (format >> 24) & 0xff,
799 st->codec.codec_type);
800#endif
5cd62665 801 st->codec.codec_tag = format;
5ca1d879
ZK
802 if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
803 MOV_atom_t a = { 0, 0, 0 };
804 st->codec.codec_id = id;
6cea494e
ZK
805 get_be16(pb); /* version */
806 get_be16(pb); /* revision level */
807 get_be32(pb); /* vendor */
808 get_be32(pb); /* temporal quality */
809 get_be32(pb); /* spacial quality */
810 st->codec.width = get_be16(pb); /* width */
811 st->codec.height = get_be16(pb); /* height */
0e7eed09
FB
812#if 1
813 if (st->codec.codec_id == CODEC_ID_MPEG4) {
814 /* in some MPEG4 the width/height are not correct, so
815 we ignore this info */
816 st->codec.width = 0;
817 st->codec.height = 0;
818 }
819#endif
6cea494e
ZK
820 get_be32(pb); /* horiz resolution */
821 get_be32(pb); /* vert resolution */
822 get_be32(pb); /* data size, always 0 */
5cd62665 823 frames_per_sample = get_be16(pb); /* frames per samples */
6cea494e 824#ifdef DEBUG
baf25c9d 825 av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
6cea494e 826#endif
b6a17df4 827 get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
5cd62665
ZK
828
829 st->codec.bits_per_sample = get_be16(pb); /* depth */
830 st->codec.color_table_id = get_be16(pb); /* colortable id */
6cea494e 831
14342fd5 832/* These are set in mov_read_stts and might already be set!
14bea432
MN
833 st->codec.frame_rate = 25;
834 st->codec.frame_rate_base = 1;
14342fd5 835*/
5ca1d879 836 size -= (16+8*4+2+32+2*2);
5cd62665
ZK
837#if 0
838 while (size >= 8) {
5ca1d879 839 MOV_atom_t a;
0c1a9eda 840 int64_t start_pos;
5cd62665 841
5ca1d879
ZK
842 a.size = get_be32(pb);
843 a.type = get_le32(pb);
5cd62665 844 size -= 8;
0e7eed09 845#ifdef DEBUG
baf25c9d 846 av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
5ca1d879
ZK
847 (a.type >> 0) & 0xff,
848 (a.type >> 8) & 0xff,
849 (a.type >> 16) & 0xff,
850 (a.type >> 24) & 0xff,
851 a.size, size);
0e7eed09
FB
852#endif
853 start_pos = url_ftell(pb);
854
5ca1d879 855 switch(a.type) {
0e7eed09
FB
856 case MKTAG('e', 's', 'd', 's'):
857 {
858 int tag, len;
859 /* Well, broken but suffisant for some MP4 streams */
860 get_be32(pb); /* version + flags */
5ca1d879 861 len = mov_mp4_read_descr(pb, &tag);
0e7eed09
FB
862 if (tag == 0x03) {
863 /* MP4ESDescrTag */
864 get_be16(pb); /* ID */
865 get_byte(pb); /* priority */
5ca1d879 866 len = mov_mp4_read_descr(pb, &tag);
0e7eed09
FB
867 if (tag != 0x04)
868 goto fail;
869 /* MP4DecConfigDescrTag */
870 get_byte(pb); /* objectTypeId */
871 get_be32(pb); /* streamType + buffer size */
5cd62665 872 get_be32(pb); /* max bit rate */
0e7eed09 873 get_be32(pb); /* avg bit rate */
891f64b3 874 len = mov_mp4_read_descr(pb, &tag);
0e7eed09
FB
875 if (tag != 0x05)
876 goto fail;
877 /* MP4DecSpecificDescrTag */
878#ifdef DEBUG
baf25c9d 879 av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
0e7eed09
FB
880#endif
881 sc->header_data = av_mallocz(len);
882 if (sc->header_data) {
883 get_buffer(pb, sc->header_data, len);
5cd62665 884 sc->header_len = len;
0e7eed09
FB
885 }
886 }
887 /* in any case, skip garbage */
888 }
889 break;
890 default:
891 break;
892 }
5cd62665 893 fail:
baf25c9d 894 av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
5ca1d879
ZK
895 if (atom.size > 8) {
896 url_fskip(pb, (atom.size - 8) -
5cd62665 897 ((url_ftell(pb) - start_pos)));
5ca1d879 898 size -= atom.size - 8;
5cd62665
ZK
899 }
900 }
0e7eed09
FB
901 if (size > 0) {
902 /* unknown extension */
903 url_fskip(pb, size);
904 }
5cd62665 905#else
b595afaa
MM
906
907 /* figure out the palette situation */
908 color_depth = st->codec.bits_per_sample & 0x1F;
909 color_greyscale = st->codec.bits_per_sample & 0x20;
910
911 /* if the depth is 2, 4, or 8 bpp, file is palettized */
912 if ((color_depth == 2) || (color_depth == 4) ||
913 (color_depth == 8)) {
914
915 if (color_greyscale) {
916
917 /* compute the greyscale palette */
918 color_count = 1 << color_depth;
919 color_index = 255;
920 color_dec = 256 / (color_count - 1);
921 for (j = 0; j < color_count; j++) {
922 r = g = b = color_index;
923 c->palette_control.palette[j] =
924 (r << 16) | (g << 8) | (b);
925 color_index -= color_dec;
926 if (color_index < 0)
927 color_index = 0;
928 }
929
930 } else if (st->codec.color_table_id & 0x08) {
931
932 /* if flag bit 3 is set, use the default palette */
933 color_count = 1 << color_depth;
934 if (color_depth == 2)
a90466f7 935 color_table = ff_qt_default_palette_4;
b595afaa 936 else if (color_depth == 4)
a90466f7 937 color_table = ff_qt_default_palette_16;
b595afaa 938 else
a90466f7 939 color_table = ff_qt_default_palette_256;
b595afaa
MM
940
941 for (j = 0; j < color_count; j++) {
942 r = color_table[j * 4 + 0];
943 g = color_table[j * 4 + 1];
944 b = color_table[j * 4 + 2];
945 c->palette_control.palette[j] =
946 (r << 16) | (g << 8) | (b);
947 }
948
949 } else {
950
951 /* load the palette from the file */
952 color_start = get_be32(pb);
953 color_count = get_be16(pb);
954 color_end = get_be16(pb);
955 for (j = color_start; j <= color_end; j++) {
956 /* each R, G, or B component is 16 bits;
957 * only use the top 8 bits; skip alpha bytes
958 * up front */
959 get_byte(pb);
960 get_byte(pb);
961 r = get_byte(pb);
962 get_byte(pb);
963 g = get_byte(pb);
964 get_byte(pb);
965 b = get_byte(pb);
966 get_byte(pb);
967 c->palette_control.palette[j] =
968 (r << 16) | (g << 8) | (b);
969 }
970 }
971
972 st->codec.palctrl = &c->palette_control;
973 st->codec.palctrl->palette_changed = 1;
974 } else
975 st->codec.palctrl = NULL;
976
5ca1d879
ZK
977 a.size = size;
978 mov_read_default(c, pb, a);
5cd62665
ZK
979#endif
980 } else {
891f64b3 981 st->codec.codec_id = codec_get_id(mov_audio_tags, format);
d663a1fd 982 if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
891f64b3 983 {
984#ifdef DEBUG
baf25c9d 985 av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
891f64b3 986#endif
987 get_be32(pb);get_be32(pb); //Reserved_8
988 get_be16(pb);//Reserved_2
989 get_be16(pb);//Reserved_2
990 get_be32(pb);//Reserved_4
991 get_be16(pb);//TimeScale
992 get_be16(pb);//Reserved_2
993
994 //AMRSpecificBox.(10 bytes)
d663a1fd 995
891f64b3 996 get_be32(pb); //size
891f64b3 997 get_be32(pb); //type=='damr'
891f64b3 998 get_be32(pb); //vendor
999 get_byte(pb); //decoder version
1000 get_be16(pb); //mode_set
1001 get_byte(pb); //mode_change_period
1002 get_byte(pb); //frames_per_sample
6cea494e 1003
25c4950e 1004 st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
d663a1fd
MN
1005 if(st->codec.codec_id==CODEC_ID_AMR_NB)
1006 {
1007 st->codec.sample_rate=8000;
1008 st->codec.channels=1;
1009 }
1010 else //AMR-WB
1011 {
1012 st->codec.sample_rate=16000;
1013 st->codec.channels=1;
1014 }
891f64b3 1015 st->codec.bits_per_sample=16;
1016 st->codec.bit_rate=0; /*It is not possible to tell this before we have
1017 an audio frame and even then every frame can be different*/
5cd62665 1018 }
14342fd5
JC
1019 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1020 {
1021 //This is some stuff for the hint track, lets ignore it!
1022 //Do some mp4 auto detect.
1023 c->mp4=1;
1024 size-=(16);
1025 url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1026 }
2768b0d9
TR
1027 else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1028 {
1029 /* Handle mp4 audio tag */
1030 get_be32(pb); /* version */
1031 get_be32(pb);
1032 st->codec.channels = get_be16(pb); /* channels */
1033 st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1034 get_be32(pb);
1035 st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
1036 get_be16(pb);
1037 c->mp4=1;
3ec34bfd 1038 {
2768b0d9
TR
1039 MOV_atom_t a = { format, url_ftell(pb), size - (20 + 20 + 8) };
1040 mov_read_default(c, pb, a);
3ec34bfd 1041 }
2768b0d9
TR
1042 /* Get correct sample rate from extradata */
1043 if(st->codec.extradata_size) {
1044 const int samplerate_table[] = {
1045 96000, 88200, 64000, 48000, 44100, 32000,
1046 24000, 22050, 16000, 12000, 11025, 8000,
1047 7350, 0, 0, 0
1048 };
1049 unsigned char *px = st->codec.extradata;
1050 // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1051 int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1052 st->codec.sample_rate = samplerate_table[samplerate_index];
1053 }
1054 }
14342fd5
JC
1055 else if(size>=(16+20))
1056 {//16 bytes read, reading atleast 20 more
1057#ifdef DEBUG
baf25c9d 1058 av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
14342fd5
JC
1059#endif
1060 uint16_t version = get_be16(pb); /* version */
891f64b3 1061 get_be16(pb); /* revision level */
1062 get_be32(pb); /* vendor */
1063
1064 st->codec.channels = get_be16(pb); /* channel count */
1065 st->codec.bits_per_sample = get_be16(pb); /* sample size */
1066
1067 /* handle specific s8 codec */
1068 get_be16(pb); /* compression id = 0*/
1069 get_be16(pb); /* packet size = 0 */
1070
1071 st->codec.sample_rate = ((get_be32(pb) >> 16));
baf25c9d 1072 //av_log(NULL, AV_LOG_DEBUG, "CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
891f64b3 1073
1074 switch (st->codec.codec_id) {
1075 case CODEC_ID_PCM_S16BE:
1076 if (st->codec.bits_per_sample == 8)
1077 st->codec.codec_id = CODEC_ID_PCM_S8;
1078 /* fall */
1079 case CODEC_ID_PCM_U8:
1080 st->codec.bit_rate = st->codec.sample_rate * 8;
1081 break;
1082 default:
1083 ;
1084 }
14342fd5
JC
1085
1086 //Read QT version 1 fields. In version 0 theese dont exist
1087#ifdef DEBUG
baf25c9d
GC
1088 av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1089 av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
14342fd5
JC
1090#endif
1091 if((version==1) && size>=(16+20+16))
1092 {
1093 get_be32(pb); /* samples per packet */
1094 get_be32(pb); /* bytes per packet */
1095 get_be32(pb); /* bytes per frame */
1096 get_be32(pb); /* bytes per sample */
1097 if(size>(16+20+16))
1098 {
1099 //Optional, additional atom-based fields
1100#ifdef DEBUG
baf25c9d 1101 av_log(NULL, AV_LOG_DEBUG, "offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
14342fd5
JC
1102 (format >> 0) & 0xff,
1103 (format >> 8) & 0xff,
1104 (format >> 16) & 0xff,
1105 (format >> 24) & 0xff);
1106#endif
1107 MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1108 mov_read_default(c, pb, a);
1109 }
1110 }
1111 else
1112 {
1113 //We should be down to 0 bytes here, but lets make sure.
1114 size-=(16+20);
1115#ifdef DEBUG
1116 if(size>0)
baf25c9d 1117 av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
14342fd5
JC
1118#endif
1119 url_fskip(pb, size);
1120 }
1121 }
1122 else
1123 {
1124 size-=16;
1125 //Unknown size, but lets do our best and skip the rest.
1126#ifdef DEBUG
baf25c9d 1127 av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
14342fd5
JC
1128#endif
1129 url_fskip(pb, size);
891f64b3 1130 }
6cea494e 1131 }
6cea494e 1132 }
5cd62665 1133
6cea494e
ZK
1134 return 0;
1135}
1136
5ca1d879 1137static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1138{
5ca1d879
ZK
1139 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1140 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
6cea494e 1141 int entries, i;
b6a17df4 1142
5ca1d879 1143 print_atom("stsc", atom);
5cd62665 1144
6cea494e
ZK
1145 get_byte(pb); /* version */
1146 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1147
1148 entries = get_be32(pb);
3ffe3793 1149#ifdef DEBUG
baf25c9d 1150av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
3ffe3793 1151#endif
6cea494e 1152 sc->sample_to_chunk_sz = entries;
b6a17df4
ZK
1153 sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1154 if (!sc->sample_to_chunk)
1155 return -1;
6cea494e
ZK
1156 for(i=0; i<entries; i++) {
1157 sc->sample_to_chunk[i].first = get_be32(pb);
1158 sc->sample_to_chunk[i].count = get_be32(pb);
1159 sc->sample_to_chunk[i].id = get_be32(pb);
1160#ifdef DEBUG
baf25c9d 1161/* av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
6cea494e
ZK
1162#endif
1163 }
1164 return 0;
1165}
1166
247d56f5
BB
1167static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1168{
1169 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1170 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1171 int entries, i;
1172
1173 print_atom("stss", atom);
1174
1175 get_byte(pb); /* version */
1176 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1177
1178 entries = get_be32(pb);
1179 sc->keyframe_count = entries;
1180#ifdef DEBUG
1181 av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1182#endif
1183 sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1184 if (!sc->keyframes)
1185 return -1;
1186 for(i=0; i<entries; i++) {
1187 sc->keyframes[i] = get_be32(pb);
1188#ifdef DEBUG
1189/* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1190#endif
1191 }
1192 return 0;
1193}
1194
5ca1d879 1195static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
6cea494e 1196{
5ca1d879
ZK
1197 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1198 MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
6cea494e 1199 int entries, i;
b6a17df4 1200
5ca1d879 1201 print_atom("stsz", atom);
5cd62665 1202
6cea494e
ZK
1203 get_byte(pb); /* version */
1204 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
5cd62665 1205
6cea494e
ZK
1206 sc->sample_size = get_be32(pb);
1207 entries = get_be32(pb);
1208 sc->sample_count = entries;
0147f198 1209#ifdef DEBUG
baf25c9d 1210 av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
0147f198 1211#endif
6cea494e
ZK
1212 if(sc->sample_size)
1213 return 0; /* there isn't any table following */
b6a17df4
ZK
1214 sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1215 if (!sc->sample_sizes)
1216 return -1;
6cea494e
ZK
1217 for(i=0; i<entries; i++) {
1218 sc->sample_sizes[i] = get_be32(pb);
1219#ifdef DEBUG
baf25c9d 1220/* av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
6cea494e
ZK
1221#endif
1222 }
1223 return 0;
1224}
1225
5ca1d879 1226static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1227{
5ca1d879 1228 AVStream *st = c->fc->streams[c->fc->nb_streams-1];
fd6e513e 1229 //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
0147f198 1230 int entries, i;
d957696f
MN
1231 int64_t duration=0;
1232 int64_t total_sample_count=0;
b6a17df4 1233
5ca1d879 1234 print_atom("stts", atom);
0147f198
FR
1235
1236 get_byte(pb); /* version */
1237 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1238 entries = get_be32(pb);
891f64b3 1239
baf25c9d
GC
1240 c->streams[c->fc->nb_streams-1]->stts_count = entries;
1241 c->streams[c->fc->nb_streams-1]->stts_data = (uint64_t*) av_malloc(entries * sizeof(uint64_t));
891f64b3 1242
3ffe3793 1243#ifdef DEBUG
baf25c9d 1244av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
3ffe3793 1245#endif
0147f198 1246 for(i=0; i<entries; i++) {
baf25c9d
GC
1247 int32_t sample_duration;
1248 int32_t sample_count;
0147f198 1249
891f64b3 1250 sample_count=get_be32(pb);
0147f198 1251 sample_duration = get_be32(pb);
baf25c9d 1252 c->streams[c->fc->nb_streams - 1]->stts_data[i] = (uint64_t)sample_count<<32 | (uint64_t)sample_duration;
891f64b3 1253#ifdef DEBUG
baf25c9d 1254 av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
891f64b3 1255#endif
1256 duration+=sample_duration*sample_count;
1257 total_sample_count+=sample_count;
1258
1259#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
0147f198
FR
1260
1261 if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
14bea432 1262 st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
baf25c9d 1263 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
0147f198 1264#ifdef DEBUG
baf25c9d 1265 av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
0147f198
FR
1266#endif
1267 }
891f64b3 1268#endif
1269 }
1270
14342fd5
JC
1271 /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1272 if(duration>0)
891f64b3 1273 {
d957696f
MN
1274 av_reduce(
1275 &st->codec.frame_rate,
1276 &st->codec.frame_rate_base,
baf25c9d 1277 c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
d957696f
MN
1278 duration,
1279 INT_MAX
1280 );
14342fd5 1281
891f64b3 1282#ifdef DEBUG
baf25c9d 1283 av_log(NULL, AV_LOG_DEBUG, "FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
891f64b3 1284#endif
0147f198 1285 }
14342fd5
JC
1286 else
1287 {
1288 st->codec.frame_rate_base = 1;
baf25c9d 1289 st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
14342fd5 1290 }
0147f198
FR
1291 return 0;
1292}
1293
5ca1d879
ZK
1294static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1295{
1296 AVStream *st;
1297 MOVStreamContext *sc;
1298
1299 print_atom("trak", atom);
1300
1301 st = av_new_stream(c->fc, c->fc->nb_streams);
1302 if (!st) return -2;
1303 sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1304 if (!sc) {
1305 av_free(st);
1306 return -1;
1307 }
1308
1309 sc->sample_to_chunk_index = -1;
1310 st->priv_data = sc;
1311 st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
25c4950e
FB
1312 st->start_time = 0; /* XXX: check */
1313 st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
5ca1d879
ZK
1314 c->streams[c->fc->nb_streams-1] = sc;
1315
1316 return mov_read_default(c, pb, atom);
1317}
1318
1319static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1320{
1321 AVStream *st;
1322
1323 print_atom("tkhd", atom);
1324
1325 st = c->fc->streams[c->fc->nb_streams-1];
1326
1327 get_byte(pb); /* version */
1328
1329 get_byte(pb); get_byte(pb);
1330 get_byte(pb); /* flags */
1331 /*
1332 MOV_TRACK_ENABLED 0x0001
1333 MOV_TRACK_IN_MOVIE 0x0002
1334 MOV_TRACK_IN_PREVIEW 0x0004
1335 MOV_TRACK_IN_POSTER 0x0008
1336 */
1337
1338 get_be32(pb); /* creation time */
1339 get_be32(pb); /* modification time */
1340 st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1341 get_be32(pb); /* reserved */
25c4950e
FB
1342 st->start_time = 0; /* check */
1343 st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
5ca1d879
ZK
1344 get_be32(pb); /* reserved */
1345 get_be32(pb); /* reserved */
1346
1347 get_be16(pb); /* layer */
1348 get_be16(pb); /* alternate group */
1349 get_be16(pb); /* volume */
1350 get_be16(pb); /* reserved */
1351
1352 url_fskip(pb, 36); /* display matrix */
1353
1354 /* those are fixed-point */
1355 st->codec.width = get_be32(pb) >> 16; /* track width */
1356 st->codec.height = get_be32(pb) >> 16; /* track height */
1357
1358 return 0;
1359}
1360
1361/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1362/* like the files created with Adobe Premiere 5.0, for samples see */
1363/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1364static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1365{
1366 int err;
5ca1d879
ZK
1367
1368#ifdef DEBUG
1369 print_atom("wide", atom);
1370 debug_indent++;
1371#endif
1372 if (atom.size < 8)
1373 return 0; /* continue */
1374 if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1375 url_fskip(pb, atom.size - 4);
1376 return 0;
1377 }
1378 atom.type = get_le32(pb);
1379 atom.offset += 8;
1380 atom.size -= 8;
fd6e513e 1381 if (atom.type != MKTAG('m', 'd', 'a', 't')) {
5ca1d879
ZK
1382 url_fskip(pb, atom.size);
1383 return 0;
1384 }
1385 err = mov_read_mdat(c, pb, atom);
1386#ifdef DEBUG
1387 debug_indent--;
1388#endif
1389 return err;
1390}
1391
1392
0147f198 1393#ifdef CONFIG_ZLIB
0c1a9eda 1394static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
0147f198
FR
1395{
1396 return -1;
1397}
1398
5ca1d879 1399static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
0147f198 1400{
0147f198 1401 ByteIOContext ctx;
b6a17df4
ZK
1402 uint8_t *cmov_data;
1403 uint8_t *moov_data; /* uncompressed data */
0147f198
FR
1404 long cmov_len, moov_len;
1405 int ret;
b6a17df4 1406
5ca1d879 1407 print_atom("cmov", atom);
0147f198
FR
1408
1409 get_be32(pb); /* dcom atom */
1410 if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1411 return -1;
1412 if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
baf25c9d 1413 av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
0147f198
FR
1414 return -1;
1415 }
1416 get_be32(pb); /* cmvd atom */
1417 if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1418 return -1;
1419 moov_len = get_be32(pb); /* uncompressed size */
5ca1d879 1420 cmov_len = atom.size - 6 * 4;
5cd62665 1421
b6a17df4 1422 cmov_data = (uint8_t *) av_malloc(cmov_len);
0147f198
FR
1423 if (!cmov_data)
1424 return -1;
b6a17df4 1425 moov_data = (uint8_t *) av_malloc(moov_len);
0147f198
FR
1426 if (!moov_data) {
1427 av_free(cmov_data);
1428 return -1;
1429 }
1430 get_buffer(pb, cmov_data, cmov_len);
b6a17df4 1431 if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
0147f198
FR
1432 return -1;
1433 if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1434 return -1;
1435 ctx.buf_end = ctx.buffer + moov_len;
5ca1d879
ZK
1436 atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1437 atom.offset = 0;
1438 atom.size = moov_len;
9ed83b0a
ZK
1439#ifdef DEBUG
1440 { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1441#endif
5ca1d879 1442 ret = mov_read_default(c, &ctx, atom);
0147f198
FR
1443 av_free(moov_data);
1444 av_free(cmov_data);
9ed83b0a 1445
0147f198
FR
1446 return ret;
1447}
1448#endif
1449
baf25c9d
GC
1450/* edit list atom */
1451static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1452{
58e555d4 1453 int i, edit_count;
baf25c9d
GC
1454 print_atom("elst", atom);
1455
1456 get_byte(pb); /* version */
1457 get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
58e555d4
MN
1458 edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
1459
1460 for(i=0; i<edit_count; i++){
1461 get_be32(pb); /* Track duration */
1462 get_be32(pb); /* Media time */
1463 get_be32(pb); /* Media rate */
1464 }
baf25c9d
GC
1465#ifdef DEBUG
1466 av_log(NULL, AV_LOG_DEBUG, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1467#endif
1468 return 0;
1469}
1470
6cea494e
ZK
1471static const MOVParseTableEntry mov_default_parse_table[] = {
1472/* mp4 atoms */
5ca1d879
ZK
1473{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1474{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1475{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1476{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1477{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1478{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1479{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1480{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
58e555d4 1481{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
5ca1d879
ZK
1482{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1483{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1484{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1485{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1486{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1487{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1488{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1489{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1490{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1491{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1492{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1493{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1494{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1495{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1496{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1497{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1498{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1499{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
3c13647a 1500{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
5ca1d879 1501{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
169eb021
MM
1502{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1503{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
5ca1d879
ZK
1504{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1505{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1506{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1507{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1508{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1509{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
247d56f5 1510{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
5ca1d879
ZK
1511{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1512{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1513{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1514{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1515{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1516{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1517{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1518{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1519{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1520{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1521{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
6cea494e 1522/* extra mp4 */
5ca1d879 1523{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
6cea494e 1524/* QT atoms */
5ca1d879
ZK
1525{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1526{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1527{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1528{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1529{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1530{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1531{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1532{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1533{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1534{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1535{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1536{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1537{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1538{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1539{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1540{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1541//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
0147f198 1542#ifdef CONFIG_ZLIB
5ca1d879 1543{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
0147f198 1544#else
5ca1d879 1545{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
0147f198 1546#endif
5ca1d879 1547{ 0L, mov_read_leaf }
6cea494e
ZK
1548};
1549
1550static void mov_free_stream_context(MOVStreamContext *sc)
1551{
1552 if(sc) {
1ea4f593
FB
1553 av_free(sc->chunk_offsets);
1554 av_free(sc->sample_to_chunk);
5cd62665 1555 av_free(sc->sample_sizes);
247d56f5 1556 av_free(sc->keyframes);
0e7eed09 1557 av_free(sc->header_data);
baf25c9d 1558 av_free(sc->stts_data);
1ea4f593 1559 av_free(sc);
6cea494e
ZK
1560 }
1561}
1562
5ca1d879 1563static inline uint32_t mov_to_tag(uint8_t *buf)
0e7eed09 1564{
5ca1d879 1565 return MKTAG(buf[0], buf[1], buf[2], buf[3]);
0e7eed09
FB
1566}
1567
5cd62665 1568static inline uint32_t to_be32(uint8_t *buf)
0e7eed09
FB
1569{
1570 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1571}
1572
b6a17df4 1573/* XXX: is it sufficient ? */
c9a65ca8
FB
1574static int mov_probe(AVProbeData *p)
1575{
0e7eed09
FB
1576 unsigned int offset;
1577 uint32_t tag;
3ffe3793 1578
c9a65ca8
FB
1579 /* check file header */
1580 if (p->buf_size <= 12)
1581 return 0;
0e7eed09
FB
1582 offset = 0;
1583 for(;;) {
1584 /* ignore invalid offset */
1585 if ((offset + 8) > (unsigned int)p->buf_size)
3ffe3793 1586 return 0;
5ca1d879 1587 tag = mov_to_tag(p->buf + offset + 4);
0e7eed09
FB
1588 switch(tag) {
1589 case MKTAG( 'm', 'o', 'o', 'v' ):
1590 case MKTAG( 'w', 'i', 'd', 'e' ):
1591 case MKTAG( 'f', 'r', 'e', 'e' ):
8b879f18
FR
1592 case MKTAG( 'm', 'd', 'a', 't' ):
1593 case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
bc634f6f 1594 case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
3ffe3793 1595 return AVPROBE_SCORE_MAX;
0e7eed09 1596 case MKTAG( 'f', 't', 'y', 'p' ):
5ca1d879 1597 case MKTAG( 's', 'k', 'i', 'p' ):
14342fd5 1598 offset = to_be32(p->buf+offset) + offset;
0e7eed09
FB
1599 break;
1600 default:
1601 /* unrecognized tag */
1602 return 0;
1603 }
3ffe3793
FR
1604 }
1605 return 0;
c9a65ca8
FB
1606}
1607
a266644f 1608static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
6cea494e 1609{
b6a17df4 1610 MOVContext *mov = (MOVContext *) s->priv_data;
6cea494e 1611 ByteIOContext *pb = &s->pb;
684f44d9 1612 int i, j, nb, err;
5ca1d879 1613 MOV_atom_t atom = { 0, 0, 0 };
6cea494e 1614
6cea494e 1615 mov->fc = s;
b6a17df4 1616 mov->parse_table = mov_default_parse_table;
c9a65ca8
FB
1617#if 0
1618 /* XXX: I think we should auto detect */
1619 if(s->iformat->name[1] == 'p')
6cea494e 1620 mov->mp4 = 1;
c9a65ca8 1621#endif
6cea494e 1622 if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
5ca1d879 1623 atom.size = url_filesize(url_fileno(pb));
6cea494e 1624 else
9ed83b0a 1625 atom.size = 0x7FFFFFFFFFFFFFFFLL;
6cea494e
ZK
1626
1627#ifdef DEBUG
baf25c9d 1628 av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
6cea494e
ZK
1629#endif
1630
1631 /* check MOV header */
5ca1d879 1632 err = mov_read_default(mov, pb, atom);
25fa62e1 1633 if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
bc874dae 1634 av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
25fa62e1
ZK
1635 err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1636 return -1;
6cea494e
ZK
1637 }
1638#ifdef DEBUG
baf25c9d 1639 av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1640#endif
1641 /* some cleanup : make sure we are on the mdat atom */
1642 if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1643 url_fseek(pb, mov->mdat_offset, SEEK_SET);
1644
1645 mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1646
1647#ifdef DEBUG
baf25c9d 1648 av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
6cea494e
ZK
1649#endif
1650
1651#ifdef DEBUG
baf25c9d 1652 av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
6cea494e
ZK
1653#endif
1654 mov->total_streams = nb = s->nb_streams;
5ca1d879 1655
6cea494e
ZK
1656#if 1
1657 for(i=0; i<s->nb_streams;) {
1658 if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1ea4f593 1659 av_free(s->streams[i]);
6cea494e
ZK
1660 for(j=i+1; j<s->nb_streams; j++)
1661 s->streams[j-1] = s->streams[j];
1662 s->nb_streams--;
1663 } else
1664 i++;
1665 }
1666 for(i=0; i<s->nb_streams;i++) {
1667 MOVStreamContext *sc;
1668 sc = (MOVStreamContext *)s->streams[i]->priv_data;
1669 sc->ffindex = i;
1670 sc->is_ff_stream = 1;
1671 }
1672#endif
1673#ifdef DEBUG
baf25c9d 1674 av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
6cea494e
ZK
1675#endif
1676 return 0;
1677}
1678
1679/* Yes, this is ugly... I didn't write the specs of QT :p */
1680/* XXX:remove useless commented code sometime */
a266644f 1681static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
6cea494e 1682{
b6a17df4 1683 MOVContext *mov = (MOVContext *) s->priv_data;
0e7eed09 1684 MOVStreamContext *sc;
9ed83b0a 1685 int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
247d56f5 1686 int i, a, b, m;
5cd62665 1687 int size;
6cea494e 1688 size = 0x0FFFFFFF;
5cd62665 1689
3ffe3793
FR
1690#ifdef MOV_SPLIT_CHUNKS
1691 if (mov->partial) {
5cd62665 1692
3ffe3793
FR
1693 int idx;
1694
5cd62665
ZK
1695 sc = mov->partial;
1696 idx = sc->sample_to_chunk_index;
1697
3ffe3793 1698 if (idx < 0) return 0;
5cd62665 1699 size = sc->sample_sizes[sc->current_sample];
3ffe3793 1700
5cd62665
ZK
1701 sc->current_sample++;
1702 sc->left_in_chunk--;
3ffe3793 1703
5cd62665 1704 if (sc->left_in_chunk <= 0)
3ffe3793
FR
1705 mov->partial = 0;
1706 offset = mov->next_chunk_offset;
1707 /* extract the sample */
1708
1709 goto readchunk;
1710 }
1711#endif
1712
6cea494e 1713again:
5cd62665 1714 sc = 0;
6cea494e 1715 for(i=0; i<mov->total_streams; i++) {
5cd62665 1716 MOVStreamContext *msc = mov->streams[i];
baf25c9d 1717 //av_log(NULL, AV_LOG_DEBUG, "MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
5cd62665
ZK
1718 if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1719 && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1720 sc = msc;
1721 offset = msc->chunk_offsets[msc->next_chunk];
baf25c9d 1722 //av_log(NULL, AV_LOG_DEBUG, "SELETED %Ld i:%d\n", offset, i);
6cea494e 1723 }
6cea494e 1724 }
9ed83b0a 1725 if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
5cd62665
ZK
1726 return -1;
1727
1728 sc->next_chunk++;
1729
3ffe3793 1730 if(mov->next_chunk_offset < offset) { /* some meta data */
6cea494e 1731 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
3ffe3793
FR
1732 mov->next_chunk_offset = offset;
1733 }
1734
baf25c9d 1735//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
5cd62665 1736 if(!sc->is_ff_stream) {
6cea494e 1737 url_fskip(&s->pb, (offset - mov->next_chunk_offset));
3ffe3793 1738 mov->next_chunk_offset = offset;
9ed83b0a 1739 offset = 0x0FFFFFFFFFFFFFFFLL;
6cea494e
ZK
1740 goto again;
1741 }
6cea494e
ZK
1742
1743 /* now get the chunk size... */
1744
1745 for(i=0; i<mov->total_streams; i++) {
5cd62665
ZK
1746 MOVStreamContext *msc = mov->streams[i];
1747 if ((msc->next_chunk < msc->chunk_count)
1748 && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1749 size = msc->chunk_offsets[msc->next_chunk] - offset;
6cea494e 1750 }
bc634f6f
ZK
1751
1752#ifdef MOV_MINOLTA_FIX
1753 //Make sure that size is according to sample_size (Needed by .mov files
1754 //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1755 //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1756 //but I have no such movies
1757 if (sc->sample_size > 0) {
1758 int foundsize=0;
1759 for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1760 if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1761 {
cac0a56c
RS
1762 // I can't figure out why for PCM audio sample_size is always 1
1763 // (it should actually be channels*bits_per_second/8) but it is.
1764 AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1765 if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1766 foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1767 else
1768 foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
bc634f6f
ZK
1769 }
1770#ifdef DEBUG
baf25c9d 1771 /*av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
bc634f6f
ZK
1772#endif
1773 }
1774 if( (foundsize>0) && (foundsize<size) )
1775 {
1776#ifdef DEBUG
baf25c9d 1777 /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
bc634f6f
ZK
1778#endif
1779 size=foundsize;
1780 }
1781 }
1782#endif //MOV_MINOLTA_FIX
1783
3ffe3793
FR
1784#ifdef MOV_SPLIT_CHUNKS
1785 /* split chunks into samples */
5cd62665
ZK
1786 if (sc->sample_size == 0) {
1787 int idx = sc->sample_to_chunk_index;
1788 if ((idx + 1 < sc->sample_to_chunk_sz)
1789 && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1790 idx++;
1791 sc->sample_to_chunk_index = idx;
1792 if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1793 mov->partial = sc;
3ffe3793 1794 /* we'll have to get those samples before next chunk */
5cd62665
ZK
1795 sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1796 size = sc->sample_sizes[sc->current_sample];
3ffe3793
FR
1797 }
1798
5cd62665 1799 sc->current_sample++;
3ffe3793
FR
1800 }
1801#endif
1802
1803readchunk:
baf25c9d 1804//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
6cea494e
ZK
1805 if(size == 0x0FFFFFFF)
1806 size = mov->mdat_size + mov->mdat_offset - offset;
1807 if(size < 0)
1808 return -1;
1809 if(size == 0)
1810 return -1;
0e7eed09 1811 url_fseek(&s->pb, offset, SEEK_SET);
5cd62665 1812
baf25c9d 1813 //av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
0e7eed09
FB
1814 if (sc->header_len > 0) {
1815 av_new_packet(pkt, size + sc->header_len);
1816 memcpy(pkt->data, sc->header_data, sc->header_len);
1817 get_buffer(&s->pb, pkt->data + sc->header_len, size);
1818 /* free header */
1819 av_freep(&sc->header_data);
1820 sc->header_len = 0;
1821 } else {
1822 av_new_packet(pkt, size);
1823 get_buffer(&s->pb, pkt->data, pkt->size);
1824 }
1825 pkt->stream_index = sc->ffindex;
247d56f5
BB
1826
1827 // If the keyframes table exists, mark any samples that are in the table as key frames.
1828 // If no table exists, treat very sample as a key frame.
1829 if (sc->keyframes) {
1830 a = 0;
1831 b = sc->keyframe_count - 1;
1832
1833 while (a < b) {
1834 m = (a + b + 1) >> 1;
1835 if (sc->keyframes[m] > sc->current_sample) {
1836 b = m - 1;
1837 } else {
1838 a = m;
1839 }
1840 }
1841
1842 if (sc->keyframes[a] == sc->current_sample)
1843 pkt->flags |= PKT_FLAG_KEY;
1844 }
1845 else
1846 pkt->flags |= PKT_FLAG_KEY;
6cea494e
ZK
1847
1848#ifdef DEBUG
1849/*
baf25c9d 1850 av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
6cea494e 1851 for(i=0; i<8; i++)
baf25c9d 1852 av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
6cea494e 1853 for(i=0; i<8; i++)
baf25c9d 1854 av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
6cea494e
ZK
1855 puts("");
1856*/
1857#endif
1858
1859 mov->next_chunk_offset = offset + size;
1860
1861 return 0;
1862}
1863
baf25c9d
GC
1864#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
1865/**
1866 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
1867 */
7b3c1382 1868static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
baf25c9d
GC
1869{
1870 MOVContext* mov = (MOVContext *) s->priv_data;
1871 MOVStreamContext* sc;
1872 int32_t i, a, b, m;
1873 int64_t sample_time;
1874 int64_t start_time;
1875 int32_t seek_sample, sample;
1876 int32_t duration;
1877 int32_t count;
1878 int32_t chunk;
1879 int32_t left_in_chunk;
1880 int64_t chunk_file_offset;
1881 int64_t sample_file_offset;
1882 int32_t first_chunk_sample;
1883 int32_t sample_to_chunk_idx;
1884 int mov_idx;
1885
1886 // Find the corresponding mov stream
1887 for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
1888 if (mov->streams[mov_idx]->ffindex == stream_index)
1889 break;
1890 if (mov_idx == mov->total_streams) {
1891 av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
1892 return -1;
1893 }
1894 sc = mov->streams[mov_idx];
1895
1896 // Step 1. Find the edit that contains the requested time (elst)
1897 if (sc->edit_count) {
1898 // FIXME should handle edit list
1899 av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
1900 return -1;
1901 }
1902
1903 // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
1904#ifdef DEBUG
1905 av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
1906#endif
1907 // convert timestamp from time_base unit to timescale unit
1908 sample_time = av_rescale( timestamp,
1909 (int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
1910 (int64_t)s->streams[stream_index]->time_base.den);
1911 start_time = 0; // FIXME use elst atom
1912 sample = 1; // sample are 0 based in table
1913#ifdef DEBUG
1914 av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
1915#endif
1916 for (i = 0; i < sc->stts_count; i++) {
1917 count = (uint32_t)(sc->stts_data[i]>>32);
1918 duration = (uint32_t)(sc->stts_data[i]&0xffff);
1919//av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);
1920//av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);
1921 if ((start_time + count*duration) > sample_time) {
1922 sample += (sample_time - start_time) / duration;
1923 break;
1924 }
1925 sample += count;
1926 start_time += count * duration;
1927 }
1928 /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
1929 is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
1930
1931#ifdef DEBUG
1932 av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
1933#endif
1934 if (sample > sc->sample_count) {
1935 av_log(s, AV_LOG_ERROR, "mov: sample pos is too high, unable to seek (req. sample=%i, sample count=%ld)\n", sample, sc->sample_count);
1936 return -1;
1937 }
1938
1939 // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
1940 if (sc->keyframes) {
1941 a = 0;
1942 b = sc->keyframe_count - 1;
1943 while (a < b) {
1944 m = (a + b + 1) >> 1;
1945 if (sc->keyframes[m] > sample) {
1946 b = m - 1;
1947 } else {
1948 a = m;
1949 }
1950#ifdef DEBUG
1951 // av_log(s, AV_LOG_DEBUG, "a=%i (%i) b=%i (%i) m=%i (%i) stream #%i\n", a, sc->keyframes[a], b, sc->keyframes[b], m, sc->keyframes[m], mov_idx);
1952#endif
1953 }
1954 seek_sample = sc->keyframes[a];
1955 }
1956 else
1957 seek_sample = sample; // else all samples are key frames
1958#ifdef DEBUG
1959 av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
1960#endif
1961
1962 // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
1963 for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
1964 b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
1965 if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
1966 break;
1967 first_chunk_sample += b;
1968 }
1969 chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
1970 left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
1971 first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
1972 sample_to_chunk_idx = i;
1973#ifdef DEBUG
1974 av_log(s, AV_LOG_DEBUG, "Sample was found in chunk #%i at sample offset %i (idx %i)\n", chunk, seek_sample - first_chunk_sample, sample_to_chunk_idx);
1975#endif
1976
1977 // Step 5. Find the offset of the chunk using the chunk offset atom
1978 if (!sc->chunk_offsets) {
1979 av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
1980 return -1;
1981 }
1982 if (chunk > sc->chunk_count) {
1983 av_log(s, AV_LOG_ERROR, "mov: chunk offset atom too short, unable to seek (req. chunk=%i, chunk count=%li)\n", chunk, sc->chunk_count);
1984 return -1;
1985 }
1986 chunk_file_offset = sc->chunk_offsets[chunk - 1];
1987#ifdef DEBUG
1988 av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
1989#endif
1990
1991 // Step 6. Find the byte offset within the chunk using the sample size atom
1992 sample_file_offset = chunk_file_offset;
1993 if (sc->sample_size)
1994 sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
1995 else {
1996 for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
1997 sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
1998 }
1999 }
2000#ifdef DEBUG
2001 av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
2002#endif
2003
2004 // Step 6. Update the parser
2005 mov->partial = sc;
2006 mov->next_chunk_offset = sample_file_offset;
2007 // Update current stream state
2008 sc->current_sample = seek_sample - 1; // zero based
2009 sc->left_in_chunk = left_in_chunk;
2010 sc->next_chunk = chunk; // +1 -1 (zero based)
2011 sc->sample_to_chunk_index = sample_to_chunk_idx;
2012
2013 // Update other streams
2014 for (i = 0; i<mov->total_streams; i++) {
5c030d3e 2015 MOVStreamContext *msc;
baf25c9d
GC
2016 if (i == mov_idx) continue;
2017 // Find the nearest 'next' chunk
5c030d3e 2018 msc = mov->streams[i];
baf25c9d
GC
2019 a = 0;
2020 b = msc->chunk_count - 1;
2021 while (a < b) {
2022 m = (a + b + 1) >> 1;
2023 if (msc->chunk_offsets[m] > chunk_file_offset) {
2024 b = m - 1;
2025 } else {
2026 a = m;
2027 }
2028#ifdef DEBUG
2029/* av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2030 , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m], i); */
2031#endif
2032 }
2033 msc->next_chunk = a;
2034 if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2035 msc->next_chunk ++;
2036#ifdef DEBUG
2037 av_log(s, AV_LOG_DEBUG, "Nearest next chunk for stream #%i is #%i @%lli\n", i, msc->next_chunk+1, msc->chunk_offsets[msc->next_chunk]);
2038#endif
2039 // Compute sample count and index in the sample_to_chunk table (what a pity)
2040 msc->sample_to_chunk_index = 0;
2041 msc->current_sample = 0;
2042 for(; msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2043 && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2044 msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2045 * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2046 }
2047 msc->current_sample += (msc->next_chunk - (msc->sample_to_chunk[msc->sample_to_chunk_index].first - 1)) * sc->sample_to_chunk[msc->sample_to_chunk_index].count;
2048 msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2049#ifdef DEBUG
2050 av_log(s, AV_LOG_DEBUG, "Next Sample for stream #%i is #%i @%i\n", i, msc->current_sample + 1, msc->sample_to_chunk_index + 1);
2051#endif
2052 }
2053 return 0;
2054}
2055#endif
2056
a266644f 2057static int mov_read_close(AVFormatContext *s)
6cea494e
ZK
2058{
2059 int i;
b6a17df4 2060 MOVContext *mov = (MOVContext *) s->priv_data;
6cea494e
ZK
2061 for(i=0; i<mov->total_streams; i++)
2062 mov_free_stream_context(mov->streams[i]);
5ca1d879
ZK
2063 /* free color tabs */
2064 for(i=0; i<mov->ctab_size; i++)
2065 av_freep(&mov->ctab[i]);
2066 av_freep(&mov->ctab);
6cea494e
ZK
2067 return 0;
2068}
2069
c9a65ca8 2070static AVInputFormat mov_iformat = {
4cb3f3b6 2071 "mov,mp4,m4a,3gp",
c9a65ca8
FB
2072 "QuickTime/MPEG4 format",
2073 sizeof(MOVContext),
2074 mov_probe,
6cea494e
ZK
2075 mov_read_header,
2076 mov_read_packet,
2077 mov_read_close,
baf25c9d
GC
2078#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2079 mov_read_seek,
2080#endif
6cea494e
ZK
2081};
2082
c9a65ca8
FB
2083int mov_init(void)
2084{
2085 av_register_input_format(&mov_iformat);
2086 return 0;
2087}