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1 6cea494e Zdenek Kabelac
/*
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 * MOV decoder.
3 19720f15 Fabrice Bellard
 * Copyright (c) 2001 Fabrice Bellard.
4 6cea494e Zdenek Kabelac
 *
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 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
10 19720f15 Fabrice Bellard
 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 19720f15 Fabrice Bellard
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
15 19720f15 Fabrice Bellard
 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18 6cea494e Zdenek Kabelac
 */
19 d957696f Michael Niedermayer
20
#include <limits.h>
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#include "avformat.h"
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#include "avi.h"
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25 0147f198 François Revol
#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
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29 6cea494e Zdenek Kabelac
/*
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 * First version by Francois Revol revol@free.fr
31 baf25c9d Gael Chardon
 * Seek function by Gael Chardon gael.dev@4now.net 
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 *
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 * Features and limitations:
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 * - reads most of the QT files I have (at least the structure),
35 6cea494e Zdenek Kabelac
 *   the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
36 0147f198 François Revol
 *   FIXED, Francois Revol, 07/17/2002
37 6cea494e Zdenek Kabelac
 * - ffmpeg has nearly none of the usual QuickTime codecs,
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 *   although I succesfully dumped raw and mp3 audio tracks off .mov files.
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 *   Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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 * - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
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 *   (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
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 *   http://mpeg.telecomitalialab.com/faq.htm
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 * - the code is quite ugly... maybe I won't do it recursive next time :-)
44 baf25c9d Gael Chardon
 * - seek is not supported with files that contain edit list
45 5ca1d879 Zdenek Kabelac
 *
46 6cea494e Zdenek Kabelac
 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
47
 * when coding this :) (it's a writer anyway)
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 *
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 * Reference documents:
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 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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 * Apple:
52 baf25c9d Gael Chardon
 *  http://developer.apple.com/documentation/QuickTime/QTFF/
53 15c8dbe7 Sebastien Bechet
 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
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 * QuickTime is a trademark of Apple (AFAIK :))
55
 */
56
57 c9a65ca8 Fabrice Bellard
//#define DEBUG
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#ifdef DEBUG
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#include <stdio.h>
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#include <fcntl.h>
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#endif
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63 b595afaa Mike Melanson
#include "qtpalette.h"
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65 baf25c9d Gael Chardon
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/* Allows seeking (MOV_SPLIT_CHUNKS should also be defined) */
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#define MOV_SEEK
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69 3ffe3793 François Revol
/* allows chunk splitting - should work now... */
70
/* in case you can't read a file, try commenting */
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#define MOV_SPLIT_CHUNKS
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73 14342fd5 Johannes Carlsson
/* Special handling for movies created with Minolta Dimaxe Xi*/
74
/* this fix should not interfere with other .mov files, but just in case*/
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#define MOV_MINOLTA_FIX
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/* some streams in QT (and in MP4 mostly) aren't either video nor audio */
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/* so we first list them as this, then clean up the list of streams we give back, */
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/* getting rid of these */
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#define CODEC_TYPE_MOV_OTHER        (enum CodecType) 2
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static const CodecTag mov_video_tags[] = {
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/*  { CODEC_ID_, MKTAG('c', 'v', 'i', 'd') }, *//* Cinepak */
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/*  { CODEC_ID_H263, MKTAG('r', 'a', 'w', ' ') }, *//* Uncompressed RGB */
85
/*  { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
86 53e27dd5 Sebastien Bechet
/*    { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
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/* Graphics */
88
/* Animation */
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/* Apple video */
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/* Kodak Photo CD */
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    { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
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    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
93 3ffe3793 François Revol
    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
94 6cea494e Zdenek Kabelac
    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
95 53e27dd5 Sebastien Bechet
    { CODEC_ID_MJPEG, MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
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/*    { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
97 6cea494e Zdenek Kabelac
/*    { CODEC_ID_GIF, MKTAG('g', 'i', 'f', ' ') }, *//* embedded gif files as frames (usually one "click to play movie" frame) */
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/* Sorenson video */
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    { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
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    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
101 3ffe3793 François Revol
    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
102 8b82a956 Michael Niedermayer
    { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
103 0e7eed09 Fabrice Bellard
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
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    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
105 8dafdb88 Mike Melanson
    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
106 fcc87242 François Revol
    { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
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/*    { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
108 0147f198 François Revol
    { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
109 25fa62e1 Zdenek Kabelac
    { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
110 e1687cc0 Fabrice Bellard
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
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    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
112 53e27dd5 Sebastien Bechet
/*    { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
113 d86053a4 Mike Melanson
    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
114 2fdf638b Mike Melanson
    { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
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    { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
116 1dc1ed99 Roberto Togni
    { CODEC_ID_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
117 b595afaa Mike Melanson
    { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
118 070ed1bc Mike Melanson
    { CODEC_ID_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
119 d08d7142 Mike Melanson
    { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
120 169eb021 Mike Melanson
    { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
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    { CODEC_ID_NONE, 0 },
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};
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static const CodecTag mov_audio_tags[] = {
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/*    { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
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    { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
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    /* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
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    { CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
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    { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
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    { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
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    { CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /*  */
132 0147f198 François Revol
    { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
133 3f95e843 François Revol
    { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
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    { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
135 6cea494e Zdenek Kabelac
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    { CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
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    { CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
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    { CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
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/*    { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/* MP4 tags */
141 f2196640 François Revol
    { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
142 5ca1d879 Zdenek Kabelac
    /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
143 891f64b3 joca@rixmail.se
    { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
144 d663a1fd Michael Niedermayer
    { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
145 8dafdb88 Mike Melanson
    { CODEC_ID_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
146 6d6d7970 Mike Melanson
    { CODEC_ID_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
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    { CODEC_ID_NONE, 0 },
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};
149
150
/* the QuickTime file format is quite convoluted...
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 * it has lots of index tables, each indexing something in another one...
152
 * Here we just use what is needed to read the chunks
153
 */
154
155
typedef struct MOV_sample_to_chunk_tbl {
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    long first;
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    long count;
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    long id;
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} MOV_sample_to_chunk_tbl;
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typedef struct {
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    uint32_t type;
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    int64_t offset;
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    int64_t size; /* total size (excluding the size and type fields) */
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} MOV_atom_t;
166
167
typedef struct {
168
    int seed;
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    int flags;
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    int size;
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    void* clrs;
172
} MOV_ctab_t;
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174
typedef struct {
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    uint8_t  version;
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    uint32_t flags; // 24bit
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    /* 0x03 ESDescrTag */
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    uint16_t es_id;
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#define MP4ODescrTag                        0x01
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#define MP4IODescrTag                        0x02
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#define MP4ESDescrTag                        0x03
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#define MP4DecConfigDescrTag                0x04
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#define MP4DecSpecificDescrTag                0x05
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#define MP4SLConfigDescrTag                0x06
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#define MP4ContentIdDescrTag                0x07
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#define MP4SupplContentIdDescrTag        0x08
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#define MP4IPIPtrDescrTag                0x09
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#define MP4IPMPPtrDescrTag                0x0A
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#define MP4IPMPDescrTag                        0x0B
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#define MP4RegistrationDescrTag                0x0D
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#define MP4ESIDIncDescrTag                0x0E
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#define MP4ESIDRefDescrTag                0x0F
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#define MP4FileIODescrTag                0x10
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#define MP4FileODescrTag                0x11
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#define MP4ExtProfileLevelDescrTag        0x13
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#define MP4ExtDescrTagsStart                0x80
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#define MP4ExtDescrTagsEnd                0xFE
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    uint8_t  stream_priority;
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    /* 0x04 DecConfigDescrTag */
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    uint8_t  object_type_id;
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    uint8_t  stream_type;
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    /* XXX: really streamType is
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     * only 6bit, followed by:
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     * 1bit  upStream
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     * 1bit  reserved
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     */
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    uint32_t buffer_size_db; // 24
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    uint32_t max_bitrate;
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    uint32_t avg_bitrate;
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    /* 0x05 DecSpecificDescrTag */
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    uint8_t  decoder_cfg_len;
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    uint8_t *decoder_cfg;
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    /* 0x06 SLConfigDescrTag */
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    uint8_t  sl_config_len;
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    uint8_t *sl_config;
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} MOV_esds_t;
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struct MOVParseTableEntry;
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224 cd461d48 Michael Niedermayer
typedef struct Time2Sample{
225
    int count;
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    int duration;
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}Time2Sample;
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229 6cea494e Zdenek Kabelac
typedef struct MOVStreamContext {
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    int ffindex; /* the ffmpeg stream id */
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    int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
232
    long next_chunk;
233
    long chunk_count;
234 0c1a9eda Zdenek Kabelac
    int64_t *chunk_offsets;
235 cd461d48 Michael Niedermayer
    int stts_count;
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    Time2Sample *stts_data;
237 c4ac052b Michael Niedermayer
    int ctts_count;
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    Time2Sample *ctts_data;
239 cd461d48 Michael Niedermayer
    int edit_count;             /* number of 'edit' (elst atom) */
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    long sample_to_chunk_sz;
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    MOV_sample_to_chunk_tbl *sample_to_chunk;
242 3ffe3793 François Revol
    long sample_to_chunk_index;
243 7fe5a3c0 Gael Chardon
    int sample_to_time_index;         
244
    long sample_to_time_sample;         
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    uint64_t sample_to_time_time;    
246 c4ac052b Michael Niedermayer
    int sample_to_ctime_index;
247
    int sample_to_ctime_sample;
248 6cea494e Zdenek Kabelac
    long sample_size;
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    long sample_count;
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    long *sample_sizes;
251 247d56f5 Brian Becker
    long keyframe_count;
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    long *keyframes;
253 5cd62665 Zdenek Kabelac
    int time_scale;
254 3ffe3793 François Revol
    long current_sample;
255
    long left_in_chunk; /* how many samples before next chunk */
256 0e7eed09 Fabrice Bellard
    /* specific MPEG4 header which is added at the beginning of the stream */
257 7fea94ce Zdenek Kabelac
    unsigned int header_len;
258 0e7eed09 Fabrice Bellard
    uint8_t *header_data;
259 5ca1d879 Zdenek Kabelac
    MOV_esds_t esds;
260 6cea494e Zdenek Kabelac
} MOVStreamContext;
261
262
typedef struct MOVContext {
263
    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) */
264
    AVFormatContext *fc;
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    int time_scale;
266
    int duration; /* duration of the longest track */
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    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
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    int found_mdat; /* we suppose we have enough data to read the file */
269 0c1a9eda Zdenek Kabelac
    int64_t mdat_size;
270
    int64_t mdat_offset;
271 6cea494e Zdenek Kabelac
    int total_streams;
272
    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
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     * but we need the info to be able to skip data from those streams in the 'mdat' section
274
     */
275
    MOVStreamContext *streams[MAX_STREAMS];
276 5cd62665 Zdenek Kabelac
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    int64_t next_chunk_offset;
278 5cd62665 Zdenek Kabelac
    MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
279 5ca1d879 Zdenek Kabelac
    int ctab_size;
280
    MOV_ctab_t **ctab;           /* color tables */
281 b6a17df4 Zdenek Kabelac
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
282
    /* NOTE: for recursion save to/ restore from local variable! */
283 b595afaa Mike Melanson
284
    AVPaletteControl palette_control;
285 6cea494e Zdenek Kabelac
} MOVContext;
286
287
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/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
289
290
/* those functions parse an atom */
291
/* return code:
292
 1: found what I wanted, exit
293
 0: continue to parse next atom
294
 -1: error occured, exit
295
 */
296 5ca1d879 Zdenek Kabelac
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
297 6cea494e Zdenek Kabelac
298
/* links atom IDs to parse functions */
299
typedef struct MOVParseTableEntry {
300 0c1a9eda Zdenek Kabelac
    uint32_t type;
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    mov_parse_function func;
302
} MOVParseTableEntry;
303
304 5ca1d879 Zdenek Kabelac
#ifdef DEBUG
305
/*
306
 * XXX: static sux, even more in a multithreaded environment...
307
 * Avoid them. This is here just to help debugging.
308
 */
309
static int debug_indent = 0;
310
void print_atom(const char *str, MOV_atom_t atom)
311
{
312
    unsigned int tag, i;
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    tag = (unsigned int) atom.type;
314
    i=debug_indent;
315
    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
316
    while(i--)
317 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "|");
318
    av_log(NULL, AV_LOG_DEBUG, "parse:");
319
    av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
320 5ca1d879 Zdenek Kabelac
           str, tag & 0xff,
321
           (tag >> 8) & 0xff,
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           (tag >> 16) & 0xff,
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           (tag >> 24) & 0xff,
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           (unsigned int)atom.offset,
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           (unsigned int)atom.size);
326
    assert((unsigned int)atom.size < 0x7fffffff);// catching errors
327
}
328
#else
329
#define print_atom(a,b)
330
#endif
331
332
333
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
334 6cea494e Zdenek Kabelac
{
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    print_atom("leaf", atom);
336 b6a17df4 Zdenek Kabelac
337 5ca1d879 Zdenek Kabelac
    if (atom.size>1)
338
        url_fskip(pb, atom.size);
339
/*        url_seek(pb, atom_offset+atom.size, SEEK_SET); */
340 6cea494e Zdenek Kabelac
    return 0;
341
}
342
343 5ca1d879 Zdenek Kabelac
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
344 6cea494e Zdenek Kabelac
{
345 b6a17df4 Zdenek Kabelac
    int64_t total_size = 0;
346 5ca1d879 Zdenek Kabelac
    MOV_atom_t a;
347 6cea494e Zdenek Kabelac
    int i;
348
    int err = 0;
349 5ca1d879 Zdenek Kabelac
350 6cea494e Zdenek Kabelac
#ifdef DEBUG
351 5ca1d879 Zdenek Kabelac
    print_atom("default", atom);
352 6cea494e Zdenek Kabelac
    debug_indent++;
353
#endif
354 5cd62665 Zdenek Kabelac
355 5ca1d879 Zdenek Kabelac
    a.offset = atom.offset;
356 6cea494e Zdenek Kabelac
357 9ed83b0a Zdenek Kabelac
    if (atom.size < 0)
358
        atom.size = 0x7fffffffffffffffLL;
359 5ca1d879 Zdenek Kabelac
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
360
        a.size = atom.size;
361
        a.type=0L;
362
        if(atom.size >= 8) {
363
            a.size = get_be32(pb);
364
            a.type = get_le32(pb);
365 6cea494e Zdenek Kabelac
        }
366 5cd62665 Zdenek Kabelac
        total_size += 8;
367 5ca1d879 Zdenek Kabelac
        a.offset += 8;
368 baf25c9d Gael Chardon
        //av_log(NULL, AV_LOG_DEBUG, "type: %08x  %.4s  sz: %Lx  %Lx   %Lx\n", type, (char*)&type, size, atom.size, total_size);
369 5ca1d879 Zdenek Kabelac
        if (a.size == 1) { /* 64 bit extended size */
370
            a.size = get_be64(pb) - 8;
371
            a.offset += 8;
372
            total_size += 8;
373 6cea494e Zdenek Kabelac
        }
374 5ca1d879 Zdenek Kabelac
        if (a.size == 0) {
375
            a.size = atom.size - total_size;
376
            if (a.size <= 8)
377 5cd62665 Zdenek Kabelac
                break;
378
        }
379 5ca1d879 Zdenek Kabelac
        for (i = 0; c->parse_table[i].type != 0L
380
             && c->parse_table[i].type != a.type; i++)
381 5cd62665 Zdenek Kabelac
            /* empty */;
382
383 5ca1d879 Zdenek Kabelac
        a.size -= 8;
384 568e18b1 Michael Niedermayer
        
385
        if(a.size < 0)
386
            break;
387
        
388 baf25c9d Gael Chardon
//        av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
389 b6a17df4 Zdenek Kabelac
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
390 5ca1d879 Zdenek Kabelac
//            url_seek(pb, atom.offset+atom.size, SEEK_SET);
391 6cea494e Zdenek Kabelac
#ifdef DEBUG
392 5ca1d879 Zdenek Kabelac
            print_atom("unknown", a);
393 6cea494e Zdenek Kabelac
#endif
394 5ca1d879 Zdenek Kabelac
            url_fskip(pb, a.size);
395 b6a17df4 Zdenek Kabelac
        } else {
396
#ifdef DEBUG
397
            //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
398
            //print_atom(b, type, offset, size);
399
#endif
400 5ca1d879 Zdenek Kabelac
            err = (c->parse_table[i].func)(c, pb, a);
401 b6a17df4 Zdenek Kabelac
        }
402 6cea494e Zdenek Kabelac
403 5ca1d879 Zdenek Kabelac
        a.offset += a.size;
404
        total_size += a.size;
405 6cea494e Zdenek Kabelac
    }
406
407 5ca1d879 Zdenek Kabelac
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
408 baf25c9d Gael Chardon
        //av_log(NULL, AV_LOG_DEBUG, "RESET  %Ld  %Ld  err:%d\n", atom.size, total_size, err);
409 5ca1d879 Zdenek Kabelac
        url_fskip(pb, atom.size - total_size);
410 5cd62665 Zdenek Kabelac
    }
411
412 6cea494e Zdenek Kabelac
#ifdef DEBUG
413
    debug_indent--;
414
#endif
415
    return err;
416
}
417
418 5ca1d879 Zdenek Kabelac
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
419 6cea494e Zdenek Kabelac
{
420 568e18b1 Michael Niedermayer
#if 1
421
    url_fskip(pb, atom.size); // for now
422
#else
423
    VERY VERY BROKEN, NEVER execute this, needs rewrite
424 88730be6 Måns Rullgård
    unsigned int len;
425
    MOV_ctab_t *t;
426 5ca1d879 Zdenek Kabelac
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
427
    t = c->ctab[c->ctab_size];
428
    t->seed = get_be32(pb);
429
    t->flags = get_be16(pb);
430
    t->size = get_be16(pb) + 1;
431
    len = 2 * t->size * 4;
432
    if (len > 0) {
433
        t->clrs = av_malloc(len); // 16bit A R G B
434
        if (t->clrs)
435
            get_buffer(pb, t->clrs, len);
436 3ffe3793 François Revol
    }
437 568e18b1 Michael Niedermayer
#endif
438 5cd62665 Zdenek Kabelac
439 0147f198 François Revol
    return 0;
440
}
441
442 5ca1d879 Zdenek Kabelac
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
443 6cea494e Zdenek Kabelac
{
444 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
445 3ffe3793 François Revol
    int len = 0;
446 0c1a9eda Zdenek Kabelac
    uint32_t type;
447
    uint32_t ctype;
448 b6a17df4 Zdenek Kabelac
449 5ca1d879 Zdenek Kabelac
    print_atom("hdlr", atom);
450 6cea494e Zdenek Kabelac
451
    get_byte(pb); /* version */
452
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
453
454
    /* component type */
455
    ctype = get_le32(pb);
456
    type = get_le32(pb); /* component subtype */
457
458
#ifdef DEBUG
459 baf25c9d Gael Chardon
    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);
460
    av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
461 6cea494e Zdenek Kabelac
#endif
462
#ifdef DEBUG
463
/* XXX: yeah this is ugly... */
464
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
465
        if(type == MKTAG('v', 'i', 'd', 'e'))
466
            puts("hdlr: vide");
467
        else if(type == MKTAG('s', 'o', 'u', 'n'))
468
            puts("hdlr: soun");
469
    } else if(ctype == 0) { /* MP4 */
470
        if(type == MKTAG('v', 'i', 'd', 'e'))
471
            puts("hdlr: vide");
472
        else if(type == MKTAG('s', 'o', 'u', 'n'))
473
            puts("hdlr: soun");
474
        else if(type == MKTAG('o', 'd', 's', 'm'))
475
            puts("hdlr: odsm");
476
        else if(type == MKTAG('s', 'd', 's', 'm'))
477
            puts("hdlr: sdsm");
478
    } else puts("hdlr: meta");
479
#endif
480
481
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
482 0147f198 François Revol
        /* helps parsing the string hereafter... */
483
        c->mp4 = 0;
484 6cea494e Zdenek Kabelac
        if(type == MKTAG('v', 'i', 'd', 'e'))
485
            st->codec.codec_type = CODEC_TYPE_VIDEO;
486
        else if(type == MKTAG('s', 'o', 'u', 'n'))
487
            st->codec.codec_type = CODEC_TYPE_AUDIO;
488
    } else if(ctype == 0) { /* MP4 */
489 0147f198 François Revol
        /* helps parsing the string hereafter... */
490
        c->mp4 = 1;
491 6cea494e Zdenek Kabelac
        if(type == MKTAG('v', 'i', 'd', 'e'))
492
            st->codec.codec_type = CODEC_TYPE_VIDEO;
493
        else if(type == MKTAG('s', 'o', 'u', 'n'))
494
            st->codec.codec_type = CODEC_TYPE_AUDIO;
495
    }
496
    get_be32(pb); /* component  manufacture */
497
    get_be32(pb); /* component flags */
498
    get_be32(pb); /* component flags mask */
499
500 5ca1d879 Zdenek Kabelac
    if(atom.size <= 24)
501 6cea494e Zdenek Kabelac
        return 0; /* nothing left to read */
502
    /* XXX: MP4 uses a C string, not a pascal one */
503
    /* component name */
504 0147f198 François Revol
505
    if(c->mp4) {
506
        /* .mp4: C string */
507 5ca1d879 Zdenek Kabelac
        while(get_byte(pb) && (++len < (atom.size - 24)));
508 0147f198 François Revol
    } else {
509
        /* .mov: PASCAL string */
510 9ed83b0a Zdenek Kabelac
#ifdef DEBUG
511
        char* buf;
512
#endif
513 0147f198 François Revol
        len = get_byte(pb);
514 5ca1d879 Zdenek Kabelac
#ifdef DEBUG
515 b6a17df4 Zdenek Kabelac
        buf = (uint8_t*) av_malloc(len+1);
516
        if (buf) {
517
            get_buffer(pb, buf, len);
518
            buf[len] = '\0';
519 baf25c9d Gael Chardon
            av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
520 b6a17df4 Zdenek Kabelac
            av_free(buf);
521
        } else
522 6cea494e Zdenek Kabelac
#endif
523 5ca1d879 Zdenek Kabelac
            url_fskip(pb, len);
524 6cea494e Zdenek Kabelac
    }
525 5cd62665 Zdenek Kabelac
526 3c13647a Cedric Vincent
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
527 6cea494e Zdenek Kabelac
    return 0;
528
}
529
530 5ca1d879 Zdenek Kabelac
static int mov_mp4_read_descr_len(ByteIOContext *pb)
531 0e7eed09 Fabrice Bellard
{
532 5cd62665 Zdenek Kabelac
    int len = 0;
533 5ca1d879 Zdenek Kabelac
    int count = 4;
534
    while (count--) {
535 5cd62665 Zdenek Kabelac
        int c = get_byte(pb);
536
        len = (len << 7) | (c & 0x7f);
537 5ca1d879 Zdenek Kabelac
        if (!(c & 0x80))
538
            break;
539 0e7eed09 Fabrice Bellard
    }
540
    return len;
541
}
542
543 5ca1d879 Zdenek Kabelac
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
544 0e7eed09 Fabrice Bellard
{
545
    int len;
546
    *tag = get_byte(pb);
547 5ca1d879 Zdenek Kabelac
    len = mov_mp4_read_descr_len(pb);
548 0e7eed09 Fabrice Bellard
#ifdef DEBUG
549 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
550 0e7eed09 Fabrice Bellard
#endif
551
    return len;
552
}
553
554 5cd62665 Zdenek Kabelac
static inline unsigned int get_be24(ByteIOContext *s)
555
{
556
    unsigned int val;
557
    val = get_byte(s) << 16;
558
    val |= get_byte(s) << 8;
559
    val |= get_byte(s);
560
    return val;
561
}
562
563 5ca1d879 Zdenek Kabelac
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
564 5cd62665 Zdenek Kabelac
{
565
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
566
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
567 5ca1d879 Zdenek Kabelac
    int64_t start_pos = url_ftell(pb);
568 5cd62665 Zdenek Kabelac
    int tag, len;
569 b6a17df4 Zdenek Kabelac
570 5ca1d879 Zdenek Kabelac
    print_atom("esds", atom);
571 5cd62665 Zdenek Kabelac
572
    /* Well, broken but suffisant for some MP4 streams */
573
    get_be32(pb); /* version + flags */
574 5ca1d879 Zdenek Kabelac
    len = mov_mp4_read_descr(pb, &tag);
575 5cd62665 Zdenek Kabelac
    if (tag == MP4ESDescrTag) {
576
        get_be16(pb); /* ID */
577
        get_byte(pb); /* priority */
578
    } else
579
        get_be16(pb); /* ID */
580
581 5ca1d879 Zdenek Kabelac
    len = mov_mp4_read_descr(pb, &tag);
582 5cd62665 Zdenek Kabelac
    if (tag == MP4DecConfigDescrTag) {
583
        sc->esds.object_type_id = get_byte(pb);
584 5ca1d879 Zdenek Kabelac
        sc->esds.stream_type = get_byte(pb);
585
        sc->esds.buffer_size_db = get_be24(pb);
586 5cd62665 Zdenek Kabelac
        sc->esds.max_bitrate = get_be32(pb);
587
        sc->esds.avg_bitrate = get_be32(pb);
588
589 5ca1d879 Zdenek Kabelac
        len = mov_mp4_read_descr(pb, &tag);
590 baf25c9d Gael Chardon
        //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);
591 5cd62665 Zdenek Kabelac
        if (tag == MP4DecSpecificDescrTag) {
592
#ifdef DEBUG
593 baf25c9d Gael Chardon
            av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
594 5cd62665 Zdenek Kabelac
#endif
595 3129cd01 Michael Niedermayer
            st->codec.extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
596 5ca1d879 Zdenek Kabelac
            if (st->codec.extradata) {
597
                get_buffer(pb, st->codec.extradata, len);
598
                st->codec.extradata_size = len;
599 5cd62665 Zdenek Kabelac
            }
600
        }
601
    }
602
    /* in any case, skip garbage */
603 5ca1d879 Zdenek Kabelac
    url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
604 5cd62665 Zdenek Kabelac
    return 0;
605
}
606
607 5ca1d879 Zdenek Kabelac
/* this atom contains actual media data */
608
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
609 6cea494e Zdenek Kabelac
{
610 5ca1d879 Zdenek Kabelac
    print_atom("mdat", atom);
611
612
    if(atom.size == 0) /* wrong one (MP4) */
613
        return 0;
614
    c->found_mdat=1;
615
    c->mdat_offset = atom.offset;
616
    c->mdat_size = atom.size;
617
    if(c->found_moov)
618
        return 1; /* found both, just go */
619
    url_fskip(pb, atom.size);
620
    return 0; /* now go for moov */
621
}
622
623
/* this atom should contain all header atoms */
624
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
625
{
626
    int err;
627 b6a17df4 Zdenek Kabelac
628 5ca1d879 Zdenek Kabelac
    print_atom("moov", atom);
629 b6a17df4 Zdenek Kabelac
630 5ca1d879 Zdenek Kabelac
    err = mov_read_default(c, pb, atom);
631
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
632
    /* so we don't parse the whole file if over a network */
633
    c->found_moov=1;
634
    if(c->found_mdat)
635
        return 1; /* found both, just go */
636
    return 0; /* now go for mdat */
637
}
638
639
640
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
641
{
642
    print_atom("mdhd", atom);
643
644
    get_byte(pb); /* version */
645
646
    get_byte(pb); get_byte(pb);
647
    get_byte(pb); /* flags */
648
649
    get_be32(pb); /* creation time */
650
    get_be32(pb); /* modification time */
651
652 baf25c9d Gael Chardon
    c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
653 5ca1d879 Zdenek Kabelac
654
#ifdef DEBUG
655 baf25c9d Gael Chardon
    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 */
656 5ca1d879 Zdenek Kabelac
#endif
657
    get_be32(pb); /* duration */
658
659
    get_be16(pb); /* language */
660
    get_be16(pb); /* quality */
661
662
    return 0;
663
}
664
665
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
666
{
667
    print_atom("mvhd", atom);
668
669
    get_byte(pb); /* version */
670
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
671
672
    get_be32(pb); /* creation time */
673
    get_be32(pb); /* modification time */
674
    c->time_scale = get_be32(pb); /* time scale */
675
#ifdef DEBUG
676 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
677 5ca1d879 Zdenek Kabelac
#endif
678
    c->duration = get_be32(pb); /* duration */
679
    get_be32(pb); /* preferred scale */
680
681
    get_be16(pb); /* preferred volume */
682
683
    url_fskip(pb, 10); /* reserved */
684
685
    url_fskip(pb, 36); /* display matrix */
686
687
    get_be32(pb); /* preview time */
688
    get_be32(pb); /* preview duration */
689
    get_be32(pb); /* poster time */
690
    get_be32(pb); /* selection time */
691
    get_be32(pb); /* selection duration */
692
    get_be32(pb); /* current time */
693
    get_be32(pb); /* next track ID */
694
695
    return 0;
696
}
697
698 9ed83b0a Zdenek Kabelac
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
699
{
700
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
701
702 568e18b1 Michael Niedermayer
    if((uint64_t)atom.size > (1<<30))
703
        return -1;
704
    
705 9ed83b0a Zdenek Kabelac
    // currently SVQ3 decoder expect full STSD header - so let's fake it
706
    // this should be fixed and just SMI header should be passed
707
    av_free(st->codec.extradata);
708
    st->codec.extradata_size = 0x5a + atom.size;
709 3129cd01 Michael Niedermayer
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
710 9ed83b0a Zdenek Kabelac
711
    if (st->codec.extradata) {
712
        strcpy(st->codec.extradata, "SVQ3"); // fake
713
        get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
714 baf25c9d Gael Chardon
        //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld  %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
715 9ed83b0a Zdenek Kabelac
    } else
716
        url_fskip(pb, atom.size);
717
718
    return 0;
719
}
720 5ca1d879 Zdenek Kabelac
721 169eb021 Mike Melanson
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
722
{
723
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
724
725 568e18b1 Michael Niedermayer
    if((uint64_t)atom.size > (1<<30))
726
        return -1;
727
728 169eb021 Mike Melanson
    av_free(st->codec.extradata);
729
730
    st->codec.extradata_size = atom.size;
731
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
732
733
    if (st->codec.extradata) {
734
        get_buffer(pb, st->codec.extradata, atom.size);
735
    } else
736
        url_fskip(pb, atom.size);
737
738
    return 0;
739
}
740
741 5ca1d879 Zdenek Kabelac
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
742
{
743
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
744
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
745 568e18b1 Michael Niedermayer
    unsigned int i, entries;
746 5ca1d879 Zdenek Kabelac
747
    print_atom("stco", atom);
748
749
    get_byte(pb); /* version */
750
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
751
752
    entries = get_be32(pb);
753 568e18b1 Michael Niedermayer
        
754
    if(entries >= UINT_MAX/sizeof(int64_t))
755
        return -1;
756
 
757 5ca1d879 Zdenek Kabelac
    sc->chunk_count = entries;
758
    sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
759
    if (!sc->chunk_offsets)
760
        return -1;
761
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
762
        for(i=0; i<entries; i++) {
763
            sc->chunk_offsets[i] = get_be32(pb);
764
        }
765
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
766
        for(i=0; i<entries; i++) {
767
            sc->chunk_offsets[i] = get_be64(pb);
768
        }
769
    } else
770
        return -1;
771
#ifdef DEBUG
772
/*
773
    for(i=0; i<entries; i++) {
774 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
775 5ca1d879 Zdenek Kabelac
    }
776
*/
777
#endif
778
    return 0;
779
}
780
781
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
782
{
783
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
784 fd6e513e Zdenek Kabelac
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
785 5ca1d879 Zdenek Kabelac
    int entries, frames_per_sample;
786
    uint32_t format;
787 53ffdd14 Roine Gustafsson
    uint8_t codec_name[32];
788 5ca1d879 Zdenek Kabelac
789 b595afaa Mike Melanson
    /* for palette traversal */
790
    int color_depth;
791
    int color_start;
792
    int color_count;
793
    int color_end;
794
    int color_index;
795
    int color_dec;
796
    int color_greyscale;
797
    unsigned char *color_table;
798
    int j;
799
    unsigned char r, g, b;
800
801 5ca1d879 Zdenek Kabelac
    print_atom("stsd", atom);
802 6cea494e Zdenek Kabelac
803
    get_byte(pb); /* version */
804
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
805
806
    entries = get_be32(pb);
807
808 891f64b3 joca@rixmail.se
    while(entries--) { //Parsing Sample description table
809 b6a17df4 Zdenek Kabelac
        enum CodecID id;
810 5ca1d879 Zdenek Kabelac
        int size = get_be32(pb); /* size */
811 6cea494e Zdenek Kabelac
        format = get_le32(pb); /* data format */
812 5cd62665 Zdenek Kabelac
813 6cea494e Zdenek Kabelac
        get_be32(pb); /* reserved */
814
        get_be16(pb); /* reserved */
815
        get_be16(pb); /* index */
816 0e7eed09 Fabrice Bellard
817
        /* for MPEG4: set codec type by looking for it */
818
        id = codec_get_id(mov_video_tags, format);
819
        if (id >= 0) {
820
            AVCodec *codec;
821 b6a17df4 Zdenek Kabelac
            codec = avcodec_find_decoder(id);
822 0e7eed09 Fabrice Bellard
            if (codec)
823 b6a17df4 Zdenek Kabelac
                st->codec.codec_type = codec->type;
824 0e7eed09 Fabrice Bellard
        }
825
#ifdef DEBUG
826 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
827 5cd62665 Zdenek Kabelac
               size,
828 0e7eed09 Fabrice Bellard
               (format >> 0) & 0xff,
829
               (format >> 8) & 0xff,
830
               (format >> 16) & 0xff,
831
               (format >> 24) & 0xff,
832
               st->codec.codec_type);
833
#endif
834 5cd62665 Zdenek Kabelac
        st->codec.codec_tag = format;
835 5ca1d879 Zdenek Kabelac
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
836
            MOV_atom_t a = { 0, 0, 0 };
837
            st->codec.codec_id = id;
838 6cea494e Zdenek Kabelac
            get_be16(pb); /* version */
839
            get_be16(pb); /* revision level */
840
            get_be32(pb); /* vendor */
841
            get_be32(pb); /* temporal quality */
842
            get_be32(pb); /* spacial quality */
843
            st->codec.width = get_be16(pb); /* width */
844
            st->codec.height = get_be16(pb); /* height */
845 0e7eed09 Fabrice Bellard
#if 1
846
            if (st->codec.codec_id == CODEC_ID_MPEG4) {
847
                /* in some MPEG4 the width/height are not correct, so
848
                   we ignore this info */
849
                st->codec.width = 0;
850
                st->codec.height = 0;
851
            }
852
#endif
853 6cea494e Zdenek Kabelac
            get_be32(pb); /* horiz resolution */
854
            get_be32(pb); /* vert resolution */
855
            get_be32(pb); /* data size, always 0 */
856 5cd62665 Zdenek Kabelac
            frames_per_sample = get_be16(pb); /* frames per samples */
857 6cea494e Zdenek Kabelac
#ifdef DEBUG
858 baf25c9d Gael Chardon
            av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
859 6cea494e Zdenek Kabelac
#endif
860 53ffdd14 Roine Gustafsson
        get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
861
        if (codec_name[0] <= 31) {
862
            memcpy(st->codec.codec_name, &codec_name[1],codec_name[0]);
863
            st->codec.codec_name[codec_name[0]] = 0;
864
        }
865 5cd62665 Zdenek Kabelac
866
            st->codec.bits_per_sample = get_be16(pb); /* depth */
867
            st->codec.color_table_id = get_be16(pb); /* colortable id */
868 6cea494e Zdenek Kabelac
869 14342fd5 Johannes Carlsson
/*          These are set in mov_read_stts and might already be set!
870 c0df9d75 Michael Niedermayer
            st->codec.time_base.den      = 25;
871
            st->codec.time_base.num = 1;
872 14342fd5 Johannes Carlsson
*/
873 5ca1d879 Zdenek Kabelac
            size -= (16+8*4+2+32+2*2);
874 5cd62665 Zdenek Kabelac
#if 0
875
            while (size >= 8) {
876 5ca1d879 Zdenek Kabelac
                MOV_atom_t a;
877 0c1a9eda Zdenek Kabelac
                int64_t start_pos;
878 5cd62665 Zdenek Kabelac

879 5ca1d879 Zdenek Kabelac
                a.size = get_be32(pb);
880
                a.type = get_le32(pb);
881 5cd62665 Zdenek Kabelac
                size -= 8;
882 0e7eed09 Fabrice Bellard
#ifdef DEBUG
883 baf25c9d Gael Chardon
                av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
884 5ca1d879 Zdenek Kabelac
                       (a.type >> 0) & 0xff,
885
                       (a.type >> 8) & 0xff,
886
                       (a.type >> 16) & 0xff,
887
                       (a.type >> 24) & 0xff,
888
                       a.size, size);
889 0e7eed09 Fabrice Bellard
#endif
890
                start_pos = url_ftell(pb);
891
892 5ca1d879 Zdenek Kabelac
                switch(a.type) {
893 0e7eed09 Fabrice Bellard
                case MKTAG('e', 's', 'd', 's'):
894
                    {
895
                        int tag, len;
896
                        /* Well, broken but suffisant for some MP4 streams */
897
                        get_be32(pb); /* version + flags */
898 5ca1d879 Zdenek Kabelac
                        len = mov_mp4_read_descr(pb, &tag);
899 0e7eed09 Fabrice Bellard
                        if (tag == 0x03) {
900
                            /* MP4ESDescrTag */
901
                            get_be16(pb); /* ID */
902
                            get_byte(pb); /* priority */
903 5ca1d879 Zdenek Kabelac
                            len = mov_mp4_read_descr(pb, &tag);
904 0e7eed09 Fabrice Bellard
                            if (tag != 0x04)
905
                                goto fail;
906
                            /* MP4DecConfigDescrTag */
907
                            get_byte(pb); /* objectTypeId */
908
                            get_be32(pb); /* streamType + buffer size */
909 5cd62665 Zdenek Kabelac
                            get_be32(pb); /* max bit rate */
910 0e7eed09 Fabrice Bellard
                            get_be32(pb); /* avg bit rate */
911 891f64b3 joca@rixmail.se
                            len = mov_mp4_read_descr(pb, &tag);
912 0e7eed09 Fabrice Bellard
                            if (tag != 0x05)
913
                                goto fail;
914
                            /* MP4DecSpecificDescrTag */
915
#ifdef DEBUG
916 baf25c9d Gael Chardon
                            av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
917 0e7eed09 Fabrice Bellard
#endif
918
                            sc->header_data = av_mallocz(len);
919
                            if (sc->header_data) {
920
                                get_buffer(pb, sc->header_data, len);
921 5cd62665 Zdenek Kabelac
                                sc->header_len = len;
922 0e7eed09 Fabrice Bellard
                            }
923
                        }
924
                        /* in any case, skip garbage */
925
                    }
926
                    break;
927
                default:
928
                    break;
929
                }
930 5cd62665 Zdenek Kabelac
            fail:
931 baf25c9d Gael Chardon
                av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld   %d\n", atom.size, url_ftell(pb) - start_pos);
932 5ca1d879 Zdenek Kabelac
                if (atom.size > 8) {
933
                    url_fskip(pb, (atom.size - 8) -
934 5cd62665 Zdenek Kabelac
                              ((url_ftell(pb) - start_pos)));
935 5ca1d879 Zdenek Kabelac
                    size -= atom.size - 8;
936 5cd62665 Zdenek Kabelac
                }
937
            }
938 0e7eed09 Fabrice Bellard
            if (size > 0) {
939
                /* unknown extension */
940
                url_fskip(pb, size);
941
            }
942 5cd62665 Zdenek Kabelac
#else
943 b595afaa Mike Melanson
944
            /* figure out the palette situation */
945
            color_depth = st->codec.bits_per_sample & 0x1F;
946
            color_greyscale = st->codec.bits_per_sample & 0x20;
947
948
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
949
            if ((color_depth == 2) || (color_depth == 4) || 
950
                (color_depth == 8)) {
951
952
                if (color_greyscale) {
953
954
                    /* compute the greyscale palette */
955
                    color_count = 1 << color_depth;
956
                    color_index = 255;
957
                    color_dec = 256 / (color_count - 1);
958
                    for (j = 0; j < color_count; j++) {
959
                        r = g = b = color_index;
960
                        c->palette_control.palette[j] =
961
                            (r << 16) | (g << 8) | (b);
962
                        color_index -= color_dec;
963
                        if (color_index < 0)
964
                            color_index = 0;
965
                    }
966
967
                } else if (st->codec.color_table_id & 0x08) {
968
969
                    /* if flag bit 3 is set, use the default palette */
970
                    color_count = 1 << color_depth;
971
                    if (color_depth == 2)
972 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_4;
973 b595afaa Mike Melanson
                    else if (color_depth == 4)
974 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_16;
975 b595afaa Mike Melanson
                    else
976 a90466f7 Michael Niedermayer
                        color_table = ff_qt_default_palette_256;
977 b595afaa Mike Melanson
978
                    for (j = 0; j < color_count; j++) {
979
                        r = color_table[j * 4 + 0];
980
                        g = color_table[j * 4 + 1];
981
                        b = color_table[j * 4 + 2];
982
                        c->palette_control.palette[j] =
983
                            (r << 16) | (g << 8) | (b);
984
                    }
985
986
                } else {
987
988
                    /* load the palette from the file */
989
                    color_start = get_be32(pb);
990
                    color_count = get_be16(pb);
991
                    color_end = get_be16(pb);
992
                    for (j = color_start; j <= color_end; j++) {
993
                        /* each R, G, or B component is 16 bits;
994
                         * only use the top 8 bits; skip alpha bytes
995
                         * up front */
996
                        get_byte(pb);
997
                        get_byte(pb);
998
                        r = get_byte(pb);
999
                        get_byte(pb);
1000
                        g = get_byte(pb);
1001
                        get_byte(pb);
1002
                        b = get_byte(pb);
1003
                        get_byte(pb);
1004
                        c->palette_control.palette[j] =
1005
                            (r << 16) | (g << 8) | (b);
1006
                    }
1007
                }
1008
1009
                st->codec.palctrl = &c->palette_control;
1010
                st->codec.palctrl->palette_changed = 1;
1011
            } else
1012
                st->codec.palctrl = NULL;
1013
1014 5ca1d879 Zdenek Kabelac
            a.size = size;
1015
            mov_read_default(c, pb, a);
1016 5cd62665 Zdenek Kabelac
#endif
1017
        } else {
1018 891f64b3 joca@rixmail.se
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
1019 d663a1fd Michael Niedermayer
            if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
1020 891f64b3 joca@rixmail.se
            {
1021
#ifdef DEBUG
1022 baf25c9d Gael Chardon
               av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
1023 891f64b3 joca@rixmail.se
#endif
1024
               get_be32(pb);get_be32(pb); //Reserved_8
1025
               get_be16(pb);//Reserved_2
1026
               get_be16(pb);//Reserved_2
1027
               get_be32(pb);//Reserved_4
1028
               get_be16(pb);//TimeScale
1029
               get_be16(pb);//Reserved_2
1030
1031
                //AMRSpecificBox.(10 bytes)
1032 d663a1fd Michael Niedermayer
               
1033 891f64b3 joca@rixmail.se
               get_be32(pb); //size
1034
               get_be32(pb); //type=='damr'
1035
               get_be32(pb); //vendor
1036
               get_byte(pb); //decoder version
1037
               get_be16(pb); //mode_set
1038
               get_byte(pb); //mode_change_period
1039
               get_byte(pb); //frames_per_sample
1040 6cea494e Zdenek Kabelac
1041 25c4950e Fabrice Bellard
               st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
1042 d663a1fd Michael Niedermayer
               if(st->codec.codec_id==CODEC_ID_AMR_NB)
1043
               {
1044
                   st->codec.sample_rate=8000;
1045
                   st->codec.channels=1;
1046
               }
1047
               else //AMR-WB
1048
               {
1049
                   st->codec.sample_rate=16000;
1050
                   st->codec.channels=1;
1051
               }
1052 891f64b3 joca@rixmail.se
               st->codec.bits_per_sample=16;
1053
               st->codec.bit_rate=0; /*It is not possible to tell this before we have 
1054
                                       an audio frame and even then every frame can be different*/
1055 5cd62665 Zdenek Kabelac
            }
1056 14342fd5 Johannes Carlsson
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1057
            {
1058
                //This is some stuff for the hint track, lets ignore it!
1059
                //Do some mp4 auto detect.
1060
                c->mp4=1;
1061
                size-=(16);
1062
                url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1063
            }
1064 2768b0d9 Thomas Raivio
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1065
            {
1066 2f1e1ed3 Michael Niedermayer
                MOV_atom_t a;
1067
                int mp4_version;
1068
1069 2768b0d9 Thomas Raivio
                /* Handle mp4 audio tag */
1070 2f1e1ed3 Michael Niedermayer
                mp4_version=get_be16(pb);/*version*/
1071
                get_be16(pb); /*revesion*/
1072 2768b0d9 Thomas Raivio
                get_be32(pb);
1073
                st->codec.channels = get_be16(pb); /* channels */
1074
                st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1075
                get_be32(pb);
1076
                st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
1077
                get_be16(pb);
1078
                c->mp4=1;
1079 2f1e1ed3 Michael Niedermayer
                
1080
                if(mp4_version==1)
1081
                {
1082
                    url_fskip(pb,16);
1083
                    a.size=size-(16+20+16);
1084
                }
1085
                else
1086
                    a.size=size-(16+20);
1087
1088
                a.offset=url_ftell(pb);
1089
                                
1090 2768b0d9 Thomas Raivio
                mov_read_default(c, pb, a);
1091 2f1e1ed3 Michael Niedermayer
1092 2768b0d9 Thomas Raivio
                /* Get correct sample rate from extradata */
1093
                if(st->codec.extradata_size) {
1094
                   const int samplerate_table[] = {
1095
                     96000, 88200, 64000, 48000, 44100, 32000, 
1096
                     24000, 22050, 16000, 12000, 11025, 8000,
1097
                     7350, 0, 0, 0
1098
                   };
1099
                   unsigned char *px = st->codec.extradata;
1100
                   // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1101
                   int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1102
                   st->codec.sample_rate = samplerate_table[samplerate_index];
1103 f2196640 François Revol
                   st->codec.channels = (px[1] >> 3) & 15;
1104 2768b0d9 Thomas Raivio
                }
1105
            }
1106 6d6d7970 Mike Melanson
            else if( st->codec.codec_tag == MKTAG( 'a', 'l', 'a', 'c' ))
1107
            {
1108
                /* Handle alac audio tag + special extradata */
1109
                get_be32(pb); /* version */
1110
                get_be32(pb);
1111
                st->codec.channels = get_be16(pb); /* channels */
1112
                st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1113
                get_be32(pb);
1114
                st->codec.sample_rate = get_be16(pb);
1115
                get_be16(pb);
1116
1117
                /* fetch the 36-byte extradata needed for alac decoding */
1118
                st->codec.extradata_size = 36;
1119
                st->codec.extradata = (uint8_t*) 
1120
                    av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
1121
                get_buffer(pb, st->codec.extradata, st->codec.extradata_size);
1122
            }
1123 14342fd5 Johannes Carlsson
            else if(size>=(16+20))
1124
            {//16 bytes read, reading atleast 20 more
1125 c3ea71a0 François Revol
                uint16_t version;
1126 14342fd5 Johannes Carlsson
#ifdef DEBUG
1127 baf25c9d Gael Chardon
                av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
1128 14342fd5 Johannes Carlsson
#endif
1129 c3ea71a0 François Revol
                version = get_be16(pb); /* version */
1130 891f64b3 joca@rixmail.se
                get_be16(pb); /* revision level */
1131
                get_be32(pb); /* vendor */
1132
1133
                st->codec.channels = get_be16(pb);                /* channel count */
1134
                st->codec.bits_per_sample = get_be16(pb);        /* sample size */
1135
1136
                /* handle specific s8 codec */
1137
                get_be16(pb); /* compression id = 0*/
1138
                get_be16(pb); /* packet size = 0 */
1139
1140
                st->codec.sample_rate = ((get_be32(pb) >> 16));
1141 baf25c9d Gael Chardon
                //av_log(NULL, AV_LOG_DEBUG, "CODECID %d  %d  %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1142 891f64b3 joca@rixmail.se
1143
                switch (st->codec.codec_id) {
1144
                case CODEC_ID_PCM_S16BE:
1145
                    if (st->codec.bits_per_sample == 8)
1146
                        st->codec.codec_id = CODEC_ID_PCM_S8;
1147
                    /* fall */
1148
                case CODEC_ID_PCM_U8:
1149
                    st->codec.bit_rate = st->codec.sample_rate * 8;
1150
                    break;
1151
                default:
1152
                    ;
1153
                }
1154 14342fd5 Johannes Carlsson
1155
                //Read QT version 1 fields. In version 0 theese dont exist
1156
#ifdef DEBUG
1157 baf25c9d Gael Chardon
                av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1158
                av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
1159 14342fd5 Johannes Carlsson
#endif
1160
                if((version==1) && size>=(16+20+16))
1161
                {
1162
                    get_be32(pb); /* samples per packet */
1163
                    get_be32(pb); /* bytes per packet */
1164
                    get_be32(pb); /* bytes per frame */
1165
                    get_be32(pb); /* bytes per sample */
1166
                    if(size>(16+20+16))
1167
                    {
1168
                        //Optional, additional atom-based fields
1169 c3ea71a0 François Revol
                        MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1170 14342fd5 Johannes Carlsson
#ifdef DEBUG
1171 baf25c9d Gael Chardon
                        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 ),
1172 14342fd5 Johannes Carlsson
                            (format >> 0) & 0xff,
1173
                            (format >> 8) & 0xff,
1174
                            (format >> 16) & 0xff,
1175
                            (format >> 24) & 0xff);
1176
#endif
1177
                        mov_read_default(c, pb, a);
1178
                    }
1179
                }
1180
                else
1181
                {
1182
                    //We should be down to 0 bytes here, but lets make sure.
1183
                    size-=(16+20);
1184
#ifdef DEBUG
1185
                    if(size>0)
1186 baf25c9d Gael Chardon
                        av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
1187 14342fd5 Johannes Carlsson
#endif
1188
                    url_fskip(pb, size);
1189
                }
1190
            }
1191
            else
1192
            {
1193
                size-=16;
1194
                //Unknown size, but lets do our best and skip the rest.
1195
#ifdef DEBUG
1196 baf25c9d Gael Chardon
                av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
1197 14342fd5 Johannes Carlsson
#endif
1198
                url_fskip(pb, size);
1199 891f64b3 joca@rixmail.se
            }
1200 6cea494e Zdenek Kabelac
        }
1201
    }
1202 5cd62665 Zdenek Kabelac
1203 6cea494e Zdenek Kabelac
    return 0;
1204
}
1205
1206 5ca1d879 Zdenek Kabelac
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1207 6cea494e Zdenek Kabelac
{
1208 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1209
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1210 568e18b1 Michael Niedermayer
    unsigned int i, entries;
1211 b6a17df4 Zdenek Kabelac
1212 5ca1d879 Zdenek Kabelac
    print_atom("stsc", atom);
1213 5cd62665 Zdenek Kabelac
1214 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
1215
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1216
1217
    entries = get_be32(pb);
1218 568e18b1 Michael Niedermayer
    
1219
    if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
1220
        return -1;
1221
    
1222 3ffe3793 François Revol
#ifdef DEBUG
1223 baf25c9d Gael Chardon
av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1224 3ffe3793 François Revol
#endif
1225 6cea494e Zdenek Kabelac
    sc->sample_to_chunk_sz = entries;
1226 b6a17df4 Zdenek Kabelac
    sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1227
    if (!sc->sample_to_chunk)
1228
        return -1;
1229 6cea494e Zdenek Kabelac
    for(i=0; i<entries; i++) {
1230
        sc->sample_to_chunk[i].first = get_be32(pb);
1231
        sc->sample_to_chunk[i].count = get_be32(pb);
1232
        sc->sample_to_chunk[i].id = get_be32(pb);
1233
#ifdef DEBUG
1234 baf25c9d Gael Chardon
/*        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); */
1235 6cea494e Zdenek Kabelac
#endif
1236
    }
1237
    return 0;
1238
}
1239
1240 247d56f5 Brian Becker
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1241
{
1242
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1243
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1244 568e18b1 Michael Niedermayer
    unsigned int i, entries;
1245 247d56f5 Brian Becker
1246
    print_atom("stss", atom);
1247
1248
    get_byte(pb); /* version */
1249
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1250
1251
    entries = get_be32(pb);
1252 568e18b1 Michael Niedermayer
    
1253
    if(entries >= UINT_MAX / sizeof(long))
1254
        return -1;
1255
    
1256 247d56f5 Brian Becker
    sc->keyframe_count = entries;
1257
#ifdef DEBUG
1258
    av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1259
#endif
1260
    sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1261
    if (!sc->keyframes)
1262
        return -1;
1263
    for(i=0; i<entries; i++) {
1264
        sc->keyframes[i] = get_be32(pb);
1265
#ifdef DEBUG
1266
/*        av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1267
#endif
1268
    }
1269
    return 0;
1270
}
1271
1272 5ca1d879 Zdenek Kabelac
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1273 6cea494e Zdenek Kabelac
{
1274 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1275
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1276 568e18b1 Michael Niedermayer
    unsigned int i, entries;
1277 b6a17df4 Zdenek Kabelac
1278 5ca1d879 Zdenek Kabelac
    print_atom("stsz", atom);
1279 5cd62665 Zdenek Kabelac
1280 6cea494e Zdenek Kabelac
    get_byte(pb); /* version */
1281
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1282 5cd62665 Zdenek Kabelac
1283 6cea494e Zdenek Kabelac
    sc->sample_size = get_be32(pb);
1284
    entries = get_be32(pb);
1285 568e18b1 Michael Niedermayer
    if(entries >= UINT_MAX / sizeof(long))
1286
        return -1;
1287
1288 6cea494e Zdenek Kabelac
    sc->sample_count = entries;
1289 0147f198 François Revol
#ifdef DEBUG
1290 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1291 0147f198 François Revol
#endif
1292 6cea494e Zdenek Kabelac
    if(sc->sample_size)
1293
        return 0; /* there isn't any table following */
1294 b6a17df4 Zdenek Kabelac
    sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1295
    if (!sc->sample_sizes)
1296
        return -1;
1297 6cea494e Zdenek Kabelac
    for(i=0; i<entries; i++) {
1298
        sc->sample_sizes[i] = get_be32(pb);
1299
#ifdef DEBUG
1300 7dbab4a9 François Revol
        av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
1301 6cea494e Zdenek Kabelac
#endif
1302
    }
1303
    return 0;
1304
}
1305
1306 5ca1d879 Zdenek Kabelac
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1307 0147f198 François Revol
{
1308 5ca1d879 Zdenek Kabelac
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1309 fd6e513e Zdenek Kabelac
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1310 568e18b1 Michael Niedermayer
    unsigned int i, entries;
1311 d957696f Michael Niedermayer
    int64_t duration=0;
1312
    int64_t total_sample_count=0;
1313 b6a17df4 Zdenek Kabelac
1314 5ca1d879 Zdenek Kabelac
    print_atom("stts", atom);
1315 0147f198 François Revol
1316
    get_byte(pb); /* version */
1317
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1318
    entries = get_be32(pb);
1319 cd461d48 Michael Niedermayer
    if(entries >= UINT_MAX / sizeof(Time2Sample))
1320 568e18b1 Michael Niedermayer
        return -1;
1321 891f64b3 joca@rixmail.se
1322 baf25c9d Gael Chardon
    c->streams[c->fc->nb_streams-1]->stts_count = entries;
1323 cd461d48 Michael Niedermayer
    c->streams[c->fc->nb_streams-1]->stts_data = av_malloc(entries * sizeof(Time2Sample));
1324 891f64b3 joca@rixmail.se
1325 3ffe3793 François Revol
#ifdef DEBUG
1326 baf25c9d Gael Chardon
av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1327 3ffe3793 François Revol
#endif
1328 0147f198 François Revol
    for(i=0; i<entries; i++) {
1329 cd461d48 Michael Niedermayer
        int sample_duration;
1330
        int sample_count;
1331 0147f198 François Revol
1332 891f64b3 joca@rixmail.se
        sample_count=get_be32(pb);
1333 0147f198 François Revol
        sample_duration = get_be32(pb);
1334 cd461d48 Michael Niedermayer
        c->streams[c->fc->nb_streams - 1]->stts_data[i].count= sample_count;
1335
        c->streams[c->fc->nb_streams - 1]->stts_data[i].duration= sample_duration;
1336 891f64b3 joca@rixmail.se
#ifdef DEBUG
1337 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1338 891f64b3 joca@rixmail.se
#endif
1339
        duration+=sample_duration*sample_count;
1340
        total_sample_count+=sample_count;
1341
1342
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1343 0147f198 François Revol

1344
        if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1345 c0df9d75 Michael Niedermayer
            st->codec.time_base.num = sample_duration ? sample_duration : 1;
1346
            st->codec.time_base.den = c->streams[c->fc->nb_streams-1]->time_scale;
1347 0147f198 François Revol
#ifdef DEBUG
1348 c0df9d75 Michael Niedermayer
            av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.time_base.den, sample_duration);
1349 0147f198 François Revol
#endif
1350
        }
1351 891f64b3 joca@rixmail.se
#endif
1352
    }
1353
1354 14342fd5 Johannes Carlsson
    /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1355
    if(duration>0)
1356 891f64b3 joca@rixmail.se
    {
1357 d957696f Michael Niedermayer
        av_reduce(
1358 c0df9d75 Michael Niedermayer
            &st->codec.time_base.den, 
1359
            &st->codec.time_base.num, 
1360 baf25c9d Gael Chardon
            c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
1361 d957696f Michael Niedermayer
            duration,
1362
            INT_MAX
1363
        );
1364 14342fd5 Johannes Carlsson
1365 891f64b3 joca@rixmail.se
#ifdef DEBUG
1366 c0df9d75 Michael Niedermayer
        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.time_base.den/st->codec.time_base.num,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
1367 891f64b3 joca@rixmail.se
#endif
1368 0147f198 François Revol
    }
1369 14342fd5 Johannes Carlsson
    else
1370
    {
1371 c0df9d75 Michael Niedermayer
        st->codec.time_base.num = 1;
1372
        st->codec.time_base.den = c->streams[c->fc->nb_streams-1]->time_scale;
1373 14342fd5 Johannes Carlsson
    }
1374 0147f198 François Revol
    return 0;
1375
}
1376
1377 c4ac052b Michael Niedermayer
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1378
{
1379
//    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1380
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1381
    unsigned int i, entries;
1382
1383
    print_atom("ctts", atom);
1384
1385
    get_byte(pb); /* version */
1386
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1387
    entries = get_be32(pb);
1388
    if(entries >= UINT_MAX / sizeof(Time2Sample))
1389
        return -1;
1390
1391
    c->streams[c->fc->nb_streams-1]->ctts_count = entries;
1392
    c->streams[c->fc->nb_streams-1]->ctts_data = av_malloc(entries * sizeof(Time2Sample));
1393
1394
// #ifdef DEBUG
1395
av_log(NULL, AV_LOG_DEBUG, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
1396
// #endif
1397
    for(i=0; i<entries; i++) {
1398
        c->streams[c->fc->nb_streams - 1]->ctts_data[i].count= get_be32(pb);
1399
        c->streams[c->fc->nb_streams - 1]->ctts_data[i].duration= get_be32(pb);
1400
    }
1401
    return 0;
1402
}
1403
1404 5ca1d879 Zdenek Kabelac
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1405
{
1406
    AVStream *st;
1407
    MOVStreamContext *sc;
1408
1409
    print_atom("trak", atom);
1410
1411
    st = av_new_stream(c->fc, c->fc->nb_streams);
1412
    if (!st) return -2;
1413
    sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1414
    if (!sc) {
1415
        av_free(st);
1416
        return -1;
1417
    }
1418
1419
    sc->sample_to_chunk_index = -1;
1420
    st->priv_data = sc;
1421
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1422 25c4950e Fabrice Bellard
    st->start_time = 0; /* XXX: check */
1423
    st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1424 5ca1d879 Zdenek Kabelac
    c->streams[c->fc->nb_streams-1] = sc;
1425
1426
    return mov_read_default(c, pb, atom);
1427
}
1428
1429
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1430
{
1431
    AVStream *st;
1432
1433
    print_atom("tkhd", atom);
1434
1435
    st = c->fc->streams[c->fc->nb_streams-1];
1436
1437
    get_byte(pb); /* version */
1438
1439
    get_byte(pb); get_byte(pb);
1440
    get_byte(pb); /* flags */
1441
    /*
1442
    MOV_TRACK_ENABLED 0x0001
1443
    MOV_TRACK_IN_MOVIE 0x0002
1444
    MOV_TRACK_IN_PREVIEW 0x0004
1445
    MOV_TRACK_IN_POSTER 0x0008
1446
    */
1447
1448
    get_be32(pb); /* creation time */
1449
    get_be32(pb); /* modification time */
1450
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1451
    get_be32(pb); /* reserved */
1452 25c4950e Fabrice Bellard
    st->start_time = 0; /* check */
1453
    st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1454 5ca1d879 Zdenek Kabelac
    get_be32(pb); /* reserved */
1455
    get_be32(pb); /* reserved */
1456
1457
    get_be16(pb); /* layer */
1458
    get_be16(pb); /* alternate group */
1459
    get_be16(pb); /* volume */
1460
    get_be16(pb); /* reserved */
1461
1462
    url_fskip(pb, 36); /* display matrix */
1463
1464
    /* those are fixed-point */
1465
    st->codec.width = get_be32(pb) >> 16; /* track width */
1466
    st->codec.height = get_be32(pb) >> 16; /* track height */
1467
1468
    return 0;
1469
}
1470
1471
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1472
/* like the files created with Adobe Premiere 5.0, for samples see */
1473
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1474
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1475
{
1476
    int err;
1477
1478
#ifdef DEBUG
1479
    print_atom("wide", atom);
1480
    debug_indent++;
1481
#endif
1482
    if (atom.size < 8)
1483
        return 0; /* continue */
1484
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1485
        url_fskip(pb, atom.size - 4);
1486
        return 0;
1487
    }
1488
    atom.type = get_le32(pb);
1489
    atom.offset += 8;
1490
    atom.size -= 8;
1491 fd6e513e Zdenek Kabelac
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1492 5ca1d879 Zdenek Kabelac
        url_fskip(pb, atom.size);
1493
        return 0;
1494
    }
1495
    err = mov_read_mdat(c, pb, atom);
1496
#ifdef DEBUG
1497
    debug_indent--;
1498
#endif
1499
    return err;
1500
}
1501
1502
1503 0147f198 François Revol
#ifdef CONFIG_ZLIB
1504 0c1a9eda Zdenek Kabelac
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1505 0147f198 François Revol
{
1506
    return -1;
1507
}
1508
1509 5ca1d879 Zdenek Kabelac
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1510 0147f198 François Revol
{
1511
    ByteIOContext ctx;
1512 b6a17df4 Zdenek Kabelac
    uint8_t *cmov_data;
1513
    uint8_t *moov_data; /* uncompressed data */
1514 0147f198 François Revol
    long cmov_len, moov_len;
1515
    int ret;
1516 b6a17df4 Zdenek Kabelac
1517 5ca1d879 Zdenek Kabelac
    print_atom("cmov", atom);
1518 0147f198 François Revol
1519
    get_be32(pb); /* dcom atom */
1520
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1521
        return -1;
1522
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1523 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
1524 0147f198 François Revol
        return -1;
1525
    }
1526
    get_be32(pb); /* cmvd atom */
1527
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1528
        return -1;
1529
    moov_len = get_be32(pb); /* uncompressed size */
1530 5ca1d879 Zdenek Kabelac
    cmov_len = atom.size - 6 * 4;
1531 5cd62665 Zdenek Kabelac
1532 b6a17df4 Zdenek Kabelac
    cmov_data = (uint8_t *) av_malloc(cmov_len);
1533 0147f198 François Revol
    if (!cmov_data)
1534
        return -1;
1535 b6a17df4 Zdenek Kabelac
    moov_data = (uint8_t *) av_malloc(moov_len);
1536 0147f198 François Revol
    if (!moov_data) {
1537
        av_free(cmov_data);
1538
        return -1;
1539
    }
1540
    get_buffer(pb, cmov_data, cmov_len);
1541 b6a17df4 Zdenek Kabelac
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1542 0147f198 François Revol
        return -1;
1543
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1544
        return -1;
1545
    ctx.buf_end = ctx.buffer + moov_len;
1546 5ca1d879 Zdenek Kabelac
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1547
    atom.offset = 0;
1548
    atom.size = moov_len;
1549 9ed83b0a Zdenek Kabelac
#ifdef DEBUG
1550
    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1551
#endif
1552 5ca1d879 Zdenek Kabelac
    ret = mov_read_default(c, &ctx, atom);
1553 0147f198 François Revol
    av_free(moov_data);
1554
    av_free(cmov_data);
1555 9ed83b0a Zdenek Kabelac
1556 0147f198 François Revol
    return ret;
1557
}
1558
#endif
1559
1560 baf25c9d Gael Chardon
/* edit list atom */
1561
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1562
{
1563 58e555d4 Michael Niedermayer
  int i, edit_count;
1564 baf25c9d Gael Chardon
  print_atom("elst", atom);
1565
1566
  get_byte(pb); /* version */
1567
  get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1568 58e555d4 Michael Niedermayer
  edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1569
  
1570
  for(i=0; i<edit_count; i++){
1571
    get_be32(pb); /* Track duration */
1572
    get_be32(pb); /* Media time */
1573
    get_be32(pb); /* Media rate */
1574
  }
1575 baf25c9d Gael Chardon
#ifdef DEBUG
1576
  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);
1577
#endif
1578
  return 0;
1579
}
1580
1581 6cea494e Zdenek Kabelac
static const MOVParseTableEntry mov_default_parse_table[] = {
1582
/* mp4 atoms */
1583 5ca1d879 Zdenek Kabelac
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1584
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1585
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1586 c4ac052b Michael Niedermayer
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
1587 5ca1d879 Zdenek Kabelac
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1588
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1589
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1590
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1591 58e555d4 Michael Niedermayer
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1592 5ca1d879 Zdenek Kabelac
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1593
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1594
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1595
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1596
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1597
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1598
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1599
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1600
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1601
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1602
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1603
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1604
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1605
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1606
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1607
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1608
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1609
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1610 3c13647a Cedric Vincent
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1611 5ca1d879 Zdenek Kabelac
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1612 169eb021 Mike Melanson
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
1613
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC }, 
1614 5ca1d879 Zdenek Kabelac
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1615
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1616
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1617
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1618
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1619
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1620 247d56f5 Brian Becker
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1621 5ca1d879 Zdenek Kabelac
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1622
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1623
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1624
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1625
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1626
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1627
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1628
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1629 a0f1f165 Måns Rullgård
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
1630 5ca1d879 Zdenek Kabelac
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1631
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1632 6cea494e Zdenek Kabelac
/* extra mp4 */
1633 5ca1d879 Zdenek Kabelac
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1634 6cea494e Zdenek Kabelac
/* QT atoms */
1635 5ca1d879 Zdenek Kabelac
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1636
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1637
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1638
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1639
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1640
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1641
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1642
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1643
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1644
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1645
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1646
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1647
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1648
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1649
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1650
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1651
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1652 0147f198 François Revol
#ifdef CONFIG_ZLIB
1653 5ca1d879 Zdenek Kabelac
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1654 0147f198 François Revol
#else
1655 5ca1d879 Zdenek Kabelac
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1656 0147f198 François Revol
#endif
1657 5ca1d879 Zdenek Kabelac
{ 0L, mov_read_leaf }
1658 6cea494e Zdenek Kabelac
};
1659
1660
static void mov_free_stream_context(MOVStreamContext *sc)
1661
{
1662
    if(sc) {
1663 c4ac052b Michael Niedermayer
        av_freep(&sc->chunk_offsets);
1664
        av_freep(&sc->sample_to_chunk);
1665
        av_freep(&sc->sample_sizes);
1666
        av_freep(&sc->keyframes);
1667
        av_freep(&sc->header_data);
1668
        av_freep(&sc->stts_data);        
1669
        av_freep(&sc->ctts_data);        
1670
        av_freep(&sc);
1671 6cea494e Zdenek Kabelac
    }
1672
}
1673
1674 5ca1d879 Zdenek Kabelac
static inline uint32_t mov_to_tag(uint8_t *buf)
1675 0e7eed09 Fabrice Bellard
{
1676 5ca1d879 Zdenek Kabelac
    return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1677 0e7eed09 Fabrice Bellard
}
1678
1679 5cd62665 Zdenek Kabelac
static inline uint32_t to_be32(uint8_t *buf)
1680 0e7eed09 Fabrice Bellard
{
1681
    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1682
}
1683
1684 b6a17df4 Zdenek Kabelac
/* XXX: is it sufficient ? */
1685 c9a65ca8 Fabrice Bellard
static int mov_probe(AVProbeData *p)
1686
{
1687 0e7eed09 Fabrice Bellard
    unsigned int offset;
1688
    uint32_t tag;
1689 2497479f François Revol
    int score = 0;
1690 3ffe3793 François Revol
1691 c9a65ca8 Fabrice Bellard
    /* check file header */
1692
    if (p->buf_size <= 12)
1693
        return 0;
1694 0e7eed09 Fabrice Bellard
    offset = 0;
1695
    for(;;) {
1696
        /* ignore invalid offset */
1697
        if ((offset + 8) > (unsigned int)p->buf_size)
1698 2497479f François Revol
            return score;
1699 5ca1d879 Zdenek Kabelac
        tag = mov_to_tag(p->buf + offset + 4);
1700 0e7eed09 Fabrice Bellard
        switch(tag) {
1701 2497479f François Revol
        /* check for obvious tags */
1702 0e7eed09 Fabrice Bellard
        case MKTAG( 'm', 'o', 'o', 'v' ):
1703 8b879f18 François Revol
        case MKTAG( 'm', 'd', 'a', 't' ):
1704
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1705 bc634f6f Zdenek Kabelac
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1706 3ffe3793 François Revol
            return AVPROBE_SCORE_MAX;
1707 2497479f François Revol
        /* those are more common words, so rate then a bit less */
1708
        case MKTAG( 'w', 'i', 'd', 'e' ):
1709
        case MKTAG( 'f', 'r', 'e', 'e' ):
1710
        case MKTAG( 'j', 'u', 'n', 'k' ):
1711
        case MKTAG( 'p', 'i', 'c', 't' ):
1712
            return AVPROBE_SCORE_MAX - 5;
1713 0e7eed09 Fabrice Bellard
        case MKTAG( 'f', 't', 'y', 'p' ):
1714 5ca1d879 Zdenek Kabelac
        case MKTAG( 's', 'k', 'i', 'p' ):
1715 0d23cb84 François Revol
        case MKTAG( 'u', 'u', 'i', 'd' ):
1716 14342fd5 Johannes Carlsson
            offset = to_be32(p->buf+offset) + offset;
1717 2497479f François Revol
            /* if we only find those cause probedata is too small at least rate them */
1718
            score = AVPROBE_SCORE_MAX - 50;
1719 0e7eed09 Fabrice Bellard
            break;
1720
        default:
1721
            /* unrecognized tag */
1722 2497479f François Revol
            return score;
1723 0e7eed09 Fabrice Bellard
        }
1724 3ffe3793 François Revol
    }
1725 2497479f François Revol
    return score;
1726 c9a65ca8 Fabrice Bellard
}
1727
1728 a266644f Zdenek Kabelac
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1729 6cea494e Zdenek Kabelac
{
1730 b6a17df4 Zdenek Kabelac
    MOVContext *mov = (MOVContext *) s->priv_data;
1731 6cea494e Zdenek Kabelac
    ByteIOContext *pb = &s->pb;
1732 684f44d9 Zdenek Kabelac
    int i, j, nb, err;
1733 5ca1d879 Zdenek Kabelac
    MOV_atom_t atom = { 0, 0, 0 };
1734 6cea494e Zdenek Kabelac
1735
    mov->fc = s;
1736 b6a17df4 Zdenek Kabelac
    mov->parse_table = mov_default_parse_table;
1737 c9a65ca8 Fabrice Bellard
#if 0
1738
    /* XXX: I think we should auto detect */
1739
    if(s->iformat->name[1] == 'p')
1740 6cea494e Zdenek Kabelac
        mov->mp4 = 1;
1741 c9a65ca8 Fabrice Bellard
#endif
1742 6cea494e Zdenek Kabelac
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1743 5ca1d879 Zdenek Kabelac
        atom.size = url_filesize(url_fileno(pb));
1744 6cea494e Zdenek Kabelac
    else
1745 9ed83b0a Zdenek Kabelac
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1746 6cea494e Zdenek Kabelac
1747
#ifdef DEBUG
1748 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
1749 6cea494e Zdenek Kabelac
#endif
1750
1751
    /* check MOV header */
1752 5ca1d879 Zdenek Kabelac
    err = mov_read_default(mov, pb, atom);
1753 25fa62e1 Zdenek Kabelac
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1754 bc874dae Michel Bardiaux
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1755 25fa62e1 Zdenek Kabelac
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1756
        return -1;
1757 6cea494e Zdenek Kabelac
    }
1758
#ifdef DEBUG
1759 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1760 6cea494e Zdenek Kabelac
#endif
1761
    /* some cleanup : make sure we are on the mdat atom */
1762
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1763
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1764
1765
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1766
1767
#ifdef DEBUG
1768 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
1769 6cea494e Zdenek Kabelac
#endif
1770
1771
#ifdef DEBUG
1772 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
1773 6cea494e Zdenek Kabelac
#endif
1774
    mov->total_streams = nb = s->nb_streams;
1775 5ca1d879 Zdenek Kabelac
1776 6cea494e Zdenek Kabelac
#if 1
1777
    for(i=0; i<s->nb_streams;) {
1778
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1779 1ea4f593 Fabrice Bellard
            av_free(s->streams[i]);
1780 6cea494e Zdenek Kabelac
            for(j=i+1; j<s->nb_streams; j++)
1781
                s->streams[j-1] = s->streams[j];
1782
            s->nb_streams--;
1783
        } else
1784
            i++;
1785
    }
1786
    for(i=0; i<s->nb_streams;i++) {
1787
        MOVStreamContext *sc;
1788
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
1789
        sc->ffindex = i;
1790
        sc->is_ff_stream = 1;
1791
    }
1792
#endif
1793
#ifdef DEBUG
1794 baf25c9d Gael Chardon
    av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
1795 6cea494e Zdenek Kabelac
#endif
1796
    return 0;
1797
}
1798
1799
/* Yes, this is ugly... I didn't write the specs of QT :p */
1800
/* XXX:remove useless commented code sometime */
1801 a266644f Zdenek Kabelac
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1802 6cea494e Zdenek Kabelac
{
1803 b6a17df4 Zdenek Kabelac
    MOVContext *mov = (MOVContext *) s->priv_data;
1804 0e7eed09 Fabrice Bellard
    MOVStreamContext *sc;
1805 9ed83b0a Zdenek Kabelac
    int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1806 247d56f5 Brian Becker
    int i, a, b, m;
1807 5cd62665 Zdenek Kabelac
    int size;
1808 7619ed2b Roine Gustafsson
    int idx;
1809 6cea494e Zdenek Kabelac
    size = 0x0FFFFFFF;
1810 5cd62665 Zdenek Kabelac
1811 3ffe3793 François Revol
#ifdef MOV_SPLIT_CHUNKS
1812
    if (mov->partial) {
1813 5cd62665 Zdenek Kabelac
        sc = mov->partial;
1814
        idx = sc->sample_to_chunk_index;
1815
1816 3ffe3793 François Revol
        if (idx < 0) return 0;
1817 7dbab4a9 François Revol
#ifdef DEBUG
1818
        fprintf(stderr, "sc[ffid %d]->sample_size = %d\n", sc->ffindex, sc->sample_size);
1819
#endif
1820 de39cdf5 Michael Niedermayer
        //size = sc->sample_sizes[sc->current_sample];
1821
        // that ain't working...
1822
        //size = (sc->sample_size)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1823
        size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1824
1825 5cd62665 Zdenek Kabelac
        sc->current_sample++;
1826
        sc->left_in_chunk--;
1827 3ffe3793 François Revol
1828 5cd62665 Zdenek Kabelac
        if (sc->left_in_chunk <= 0)
1829 3ffe3793 François Revol
            mov->partial = 0;
1830
        offset = mov->next_chunk_offset;
1831
        /* extract the sample */
1832
1833
        goto readchunk;
1834
    }
1835
#endif
1836
1837 6cea494e Zdenek Kabelac
again:
1838 5cd62665 Zdenek Kabelac
    sc = 0;
1839 6cea494e Zdenek Kabelac
    for(i=0; i<mov->total_streams; i++) {
1840 5cd62665 Zdenek Kabelac
        MOVStreamContext *msc = mov->streams[i];
1841 baf25c9d Gael Chardon
        //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));
1842 5cd62665 Zdenek Kabelac
        if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1843
           && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1844
            sc = msc;
1845
            offset = msc->chunk_offsets[msc->next_chunk];
1846 baf25c9d Gael Chardon
            //av_log(NULL, AV_LOG_DEBUG, "SELETED  %Ld  i:%d\n", offset, i);
1847 6cea494e Zdenek Kabelac
        }
1848
    }
1849 9ed83b0a Zdenek Kabelac
    if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1850 5cd62665 Zdenek Kabelac
        return -1;
1851
1852
    sc->next_chunk++;
1853
1854 3ffe3793 François Revol
    if(mov->next_chunk_offset < offset) { /* some meta data */
1855 6cea494e Zdenek Kabelac
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1856 3ffe3793 François Revol
        mov->next_chunk_offset = offset;
1857
    }
1858
1859 baf25c9d Gael Chardon
//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1860 f3356e9c Michael Niedermayer
    if(!sc->is_ff_stream || (s->streams[sc->ffindex]->discard >= AVDISCARD_ALL)) {
1861 6cea494e Zdenek Kabelac
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1862 3ffe3793 François Revol
        mov->next_chunk_offset = offset;
1863 9ed83b0a Zdenek Kabelac
        offset = 0x0FFFFFFFFFFFFFFFLL;
1864 6cea494e Zdenek Kabelac
        goto again;
1865
    }
1866
1867
    /* now get the chunk size... */
1868
1869
    for(i=0; i<mov->total_streams; i++) {
1870 5cd62665 Zdenek Kabelac
        MOVStreamContext *msc = mov->streams[i];
1871
        if ((msc->next_chunk < msc->chunk_count)
1872
            && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1873
            size = msc->chunk_offsets[msc->next_chunk] - offset;
1874 6cea494e Zdenek Kabelac
    }
1875 bc634f6f Zdenek Kabelac
1876
#ifdef MOV_MINOLTA_FIX
1877
    //Make sure that size is according to sample_size (Needed by .mov files 
1878
    //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1879
    //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1880
    //but I have no such movies
1881
    if (sc->sample_size > 0) { 
1882
        int foundsize=0;
1883
        for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1884 92e51b66 Roine Gustafsson
            if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) )
1885 bc634f6f Zdenek Kabelac
            {
1886 cac0a56c Roman Shaposhnik
                // I can't figure out why for PCM audio sample_size is always 1
1887
                // (it should actually be channels*bits_per_second/8) but it is.
1888
                AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1889
                if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1890
                    foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1891
                else
1892
                    foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1893 bc634f6f Zdenek Kabelac
            }
1894
#ifdef DEBUG
1895 c3ea71a0 François Revol
            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);
1896 bc634f6f Zdenek Kabelac
#endif
1897
        }
1898
        if( (foundsize>0) && (foundsize<size) )
1899
        {
1900
#ifdef DEBUG
1901 baf25c9d Gael Chardon
            /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
1902 bc634f6f Zdenek Kabelac
#endif
1903
            size=foundsize;
1904
        }
1905
    }
1906
#endif //MOV_MINOLTA_FIX
1907
1908 3ffe3793 François Revol
#ifdef MOV_SPLIT_CHUNKS
1909
    /* split chunks into samples */
1910 de39cdf5 Michael Niedermayer
    if (sc->sample_size == 0) {
1911 7dbab4a9 François Revol
        idx = sc->sample_to_chunk_index;
1912
        if ((idx + 1 < sc->sample_to_chunk_sz)
1913
                && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1914
            idx++;
1915
        sc->sample_to_chunk_index = idx;
1916
        if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1917
            mov->partial = sc;
1918
            /* we'll have to get those samples before next chunk */
1919
            sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1920 de39cdf5 Michael Niedermayer
            size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
1921 7dbab4a9 François Revol
        }
1922 7619ed2b Roine Gustafsson
1923 7dbab4a9 François Revol
        sc->current_sample++;
1924
    }
1925 3ffe3793 François Revol
#endif
1926
1927
readchunk:
1928 c3ea71a0 François Revol
#ifdef DEBUG
1929
    av_log(NULL, AV_LOG_DEBUG, "chunk: %lli -> %lli (%i)\n", offset, offset + size, size);
1930
#endif
1931 6cea494e Zdenek Kabelac
    if(size == 0x0FFFFFFF)
1932
        size = mov->mdat_size + mov->mdat_offset - offset;
1933
    if(size < 0)
1934
        return -1;
1935
    if(size == 0)
1936
        return -1;
1937 0e7eed09 Fabrice Bellard
    url_fseek(&s->pb, offset, SEEK_SET);
1938 5cd62665 Zdenek Kabelac
1939 baf25c9d Gael Chardon
    //av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d  %d off: %Ld   pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1940 0e7eed09 Fabrice Bellard
    if (sc->header_len > 0) {
1941
        av_new_packet(pkt, size + sc->header_len);
1942
        memcpy(pkt->data, sc->header_data, sc->header_len);
1943
        get_buffer(&s->pb, pkt->data + sc->header_len, size);
1944
        /* free header */
1945
        av_freep(&sc->header_data);
1946
        sc->header_len = 0;
1947
    } else {
1948
        av_new_packet(pkt, size);
1949
        get_buffer(&s->pb, pkt->data, pkt->size);
1950
    }
1951
    pkt->stream_index = sc->ffindex;
1952 247d56f5 Brian Becker
    
1953
    // If the keyframes table exists, mark any samples that are in the table as key frames.
1954
    // If no table exists, treat very sample as a key frame.
1955
    if (sc->keyframes) {        
1956
        a = 0;
1957
        b = sc->keyframe_count - 1;
1958
        
1959
        while (a < b) {
1960
            m = (a + b + 1) >> 1;
1961
            if (sc->keyframes[m] > sc->current_sample) {
1962
                b = m - 1;
1963
            } else {
1964
                a = m;
1965
            }    
1966
        }
1967
        
1968
        if (sc->keyframes[a] == sc->current_sample)
1969
            pkt->flags |= PKT_FLAG_KEY;
1970
    }
1971
    else
1972
        pkt->flags |= PKT_FLAG_KEY;
1973 6cea494e Zdenek Kabelac
1974
#ifdef DEBUG
1975 7dbab4a9 François Revol
/*
1976 c3ea71a0 François Revol
    av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %ld) ", pkt->stream_index, pkt->size);
1977 6cea494e Zdenek Kabelac
    for(i=0; i<8; i++)
1978 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
1979 6cea494e Zdenek Kabelac
    for(i=0; i<8; i++)
1980 baf25c9d Gael Chardon
        av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
1981 c3ea71a0 François Revol
    av_log(NULL, AV_LOG_DEBUG, "\n");
1982 7dbab4a9 François Revol
*/
1983 6cea494e Zdenek Kabelac
#endif
1984
1985
    mov->next_chunk_offset = offset + size;
1986 7fe5a3c0 Gael Chardon
    
1987
    /* find the corresponding dts */         
1988
    if (sc && sc->sample_to_time_index < sc->stts_count && pkt) {         
1989 cd461d48 Michael Niedermayer
      unsigned int count;
1990 c4ac052b Michael Niedermayer
      uint64_t dts, pts;
1991 cd461d48 Michael Niedermayer
      unsigned int duration = sc->stts_data[sc->sample_to_time_index].duration;
1992
      count = sc->stts_data[sc->sample_to_time_index].count;
1993 7fe5a3c0 Gael Chardon
      if ((sc->sample_to_time_sample + count) < sc->current_sample) {         
1994
        sc->sample_to_time_sample += count;         
1995
        sc->sample_to_time_time   += count*duration;         
1996
        sc->sample_to_time_index ++;         
1997 cd461d48 Michael Niedermayer
        duration = sc->stts_data[sc->sample_to_time_index].duration;
1998 7fe5a3c0 Gael Chardon
      }         
1999 cd461d48 Michael Niedermayer
      dts = sc->sample_to_time_time + (sc->current_sample-1 - sc->sample_to_time_sample) * (int64_t)duration;
2000 c4ac052b Michael Niedermayer
        /* find the corresponding pts */
2001
        if (sc->sample_to_ctime_index < sc->ctts_count) {
2002
            int duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
2003
            int count = sc->ctts_data[sc->sample_to_ctime_index].count;
2004
2005
            if ((sc->sample_to_ctime_sample + count) < sc->current_sample) {
2006
                sc->sample_to_ctime_sample += count;
2007
                sc->sample_to_ctime_index ++;
2008
                duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
2009
            }
2010
            pts = dts + duration;
2011
        }else
2012
            pts = dts;
2013
        pkt->pts = av_rescale( pts,
2014
                         (int64_t)s->streams[sc->ffindex]->time_base.den,
2015
                         (int64_t)sc->time_scale * (int64_t)s->streams[sc->ffindex]->time_base.num );
2016
        pkt->dts = av_rescale( dts,
2017
                         (int64_t)s->streams[sc->ffindex]->time_base.den,
2018
                         (int64_t)sc->time_scale * (int64_t)s->streams[sc->ffindex]->time_base.num );
2019
#ifdef DEBUG
2020
    av_log(NULL, AV_LOG_DEBUG, "stream #%d smp #%ld dts = %lld pts = %lld (smp:%ld time:%lld idx:%d ent:%d count:%d dur:%d)\n"
2021
      , pkt->stream_index, sc->current_sample-1, pkt->dts, pkt->pts
2022
      , sc->sample_to_time_sample
2023
      , sc->sample_to_time_time
2024
      , sc->sample_to_time_index
2025
      , sc->stts_count
2026
      , count
2027
      , duration);
2028
#endif
2029
    }
2030 6cea494e Zdenek Kabelac
2031
    return 0;
2032
}
2033
2034 baf25c9d Gael Chardon
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2035
/**
2036
 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
2037
 */
2038 7b3c1382 Michael Niedermayer
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2039 baf25c9d Gael Chardon
{
2040
    MOVContext* mov = (MOVContext *) s->priv_data;
2041
    MOVStreamContext* sc;
2042
    int32_t i, a, b, m;
2043
    int64_t sample_time;
2044
    int64_t start_time;
2045
    int32_t seek_sample, sample;
2046
    int32_t duration;
2047
    int32_t count;
2048
    int32_t chunk;
2049
    int32_t left_in_chunk;
2050
    int64_t chunk_file_offset;
2051
    int64_t sample_file_offset;
2052
    int32_t first_chunk_sample;
2053
    int32_t sample_to_chunk_idx;
2054 7fe5a3c0 Gael Chardon
    int sample_to_time_index;         
2055
    long sample_to_time_sample = 0;         
2056
    uint64_t sample_to_time_time = 0;      
2057 baf25c9d Gael Chardon
    int mov_idx;
2058
2059
    // Find the corresponding mov stream
2060
    for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
2061
        if (mov->streams[mov_idx]->ffindex == stream_index)
2062
            break;
2063
    if (mov_idx == mov->total_streams) {
2064
        av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
2065
        return -1;
2066
    }
2067
    sc = mov->streams[mov_idx];
2068
2069
    // Step 1. Find the edit that contains the requested time (elst)
2070
    if (sc->edit_count) {
2071
        // FIXME should handle edit list
2072
        av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
2073
        return -1;
2074
    }
2075
2076
    // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
2077
#ifdef DEBUG
2078
  av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
2079
#endif
2080
    // convert timestamp from time_base unit to timescale unit
2081
    sample_time = av_rescale( timestamp,
2082
                            (int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
2083
                            (int64_t)s->streams[stream_index]->time_base.den);
2084
    start_time = 0; // FIXME use elst atom
2085
    sample = 1; // sample are 0 based in table
2086
#ifdef DEBUG
2087
    av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
2088
#endif
2089
    for (i = 0; i < sc->stts_count; i++) {
2090 cd461d48 Michael Niedermayer
        count = sc->stts_data[i].count;
2091
        duration = sc->stts_data[i].duration;
2092 baf25c9d Gael Chardon
//av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);                
2093
//av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);        
2094
        if ((start_time + count*duration) > sample_time) {
2095 7fe5a3c0 Gael Chardon
            sample_to_time_time = start_time;         
2096
            sample_to_time_index = i;         
2097
            sample_to_time_sample = sample;         
2098 baf25c9d Gael Chardon
            sample += (sample_time - start_time) / duration;
2099
            break;
2100
        }
2101
        sample += count;
2102
        start_time += count * duration;
2103
    }   
2104 7fe5a3c0 Gael Chardon
    sample_to_time_time = start_time;         
2105
    sample_to_time_index = i;       
2106 baf25c9d Gael Chardon
    /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
2107
       is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
2108
2109
#ifdef DEBUG
2110
    av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
2111
#endif
2112
    if (sample > sc->sample_count) {
2113
        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);
2114
        return -1;
2115
    }
2116
2117
    // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
2118
    if (sc->keyframes) {
2119
        a = 0;
2120
        b = sc->keyframe_count - 1;
2121
        while (a < b) {
2122
            m = (a + b + 1) >> 1;
2123
            if (sc->keyframes[m] > sample) {
2124
                b = m - 1;
2125
            } else {
2126
                a = m;
2127
            }
2128
#ifdef DEBUG
2129
         // 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);
2130
#endif
2131
        }
2132 7fe5a3c0 Gael Chardon
        // for low latency prob: always use the previous keyframe, just uncomment the next line
2133
        // if (a) a--;
2134 baf25c9d Gael Chardon
        seek_sample = sc->keyframes[a];
2135
    }
2136
    else
2137
        seek_sample = sample; // else all samples are key frames
2138
#ifdef DEBUG
2139
    av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
2140
#endif
2141
2142
    // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
2143
    for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
2144
        b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
2145
        if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
2146
            break;
2147
        first_chunk_sample += b;
2148
    }
2149
    chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
2150
    left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
2151
    first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
2152
    sample_to_chunk_idx = i;
2153
#ifdef DEBUG
2154
    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);
2155
#endif
2156
2157
    // Step 5. Find the offset of the chunk using the chunk offset atom
2158
    if (!sc->chunk_offsets) {
2159
        av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
2160
        return -1;
2161
    }
2162
    if (chunk > sc->chunk_count) {
2163
        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);
2164
        return -1;
2165
    }
2166
    chunk_file_offset = sc->chunk_offsets[chunk - 1];
2167
#ifdef DEBUG
2168
    av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
2169
#endif
2170
2171
    // Step 6. Find the byte offset within the chunk using the sample size atom
2172
    sample_file_offset = chunk_file_offset;
2173
    if (sc->sample_size)
2174
        sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
2175
    else {
2176
        for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
2177
        sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
2178
        }
2179
    }
2180
#ifdef DEBUG
2181
    av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
2182
#endif
2183
2184
    // Step 6. Update the parser
2185
    mov->partial = sc;
2186
    mov->next_chunk_offset = sample_file_offset;
2187
    // Update current stream state
2188
    sc->current_sample = seek_sample - 1;  // zero based
2189
    sc->left_in_chunk = left_in_chunk;
2190
    sc->next_chunk = chunk; // +1 -1 (zero based)
2191
    sc->sample_to_chunk_index = sample_to_chunk_idx;
2192
2193
    // Update other streams    
2194
    for (i = 0; i<mov->total_streams; i++) {
2195 5c030d3e Michel Bardiaux
        MOVStreamContext *msc;
2196 baf25c9d Gael Chardon
        if (i == mov_idx) continue;
2197
        // Find the nearest 'next' chunk
2198 5c030d3e Michel Bardiaux
        msc = mov->streams[i];
2199 baf25c9d Gael Chardon
        a = 0;
2200
        b = msc->chunk_count - 1;
2201
        while (a < b) {
2202
            m = (a + b + 1) >> 1;
2203
            if (msc->chunk_offsets[m] > chunk_file_offset) {
2204
                b = m - 1;
2205
            } else {
2206
                a = m;
2207
            }
2208
#ifdef DEBUG            
2209
/*            av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2210
            , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m],  i); */
2211
#endif                  
2212
        }
2213
        msc->next_chunk = a;
2214
        if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2215
            msc->next_chunk ++;
2216
#ifdef DEBUG        
2217
        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]);
2218
#endif        
2219
        // Compute sample count and index in the sample_to_chunk table (what a pity)
2220
        msc->sample_to_chunk_index = 0;
2221
        msc->current_sample = 0;
2222
        for(;  msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2223
            && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2224
            msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2225
            * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2226
        }
2227
        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;
2228
        msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2229 7fe5a3c0 Gael Chardon
        // Find corresponding position in stts (used later to compute dts)         
2230
        sample = 0;         
2231
        start_time = 0;         
2232
        for (msc->sample_to_time_index = 0; msc->sample_to_time_index < msc->stts_count; msc->sample_to_time_index++) {         
2233 cd461d48 Michael Niedermayer
            count = msc->stts_data[msc->sample_to_time_index].count;
2234
            duration = msc->stts_data[msc->sample_to_time_index].duration;
2235 7fe5a3c0 Gael Chardon
            if ((sample + count - 1) > msc->current_sample) {         
2236
                msc->sample_to_time_time = start_time;         
2237
                msc->sample_to_time_sample = sample;         
2238
                break;         
2239
            }         
2240
            sample += count;         
2241
            start_time += count * duration;         
2242 c4ac052b Michael Niedermayer
        }
2243
        sample = 0;
2244
        for (msc->sample_to_ctime_index = 0; msc->sample_to_ctime_index < msc->ctts_count; msc->sample_to_ctime_index++) {
2245
            count = msc->ctts_data[msc->sample_to_ctime_index].count;
2246
            duration = msc->ctts_data[msc->sample_to_ctime_index].duration;
2247
            if ((sample + count - 1) > msc->current_sample) {
2248
                msc->sample_to_ctime_sample = sample;
2249
                break;
2250
            }
2251
            sample += count;
2252
        }       
2253 baf25c9d Gael Chardon
#ifdef DEBUG        
2254
        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);
2255
#endif        
2256
    }                
2257
    return 0;
2258
}
2259
#endif
2260
2261 a266644f Zdenek Kabelac
static int mov_read_close(AVFormatContext *s)
2262 6cea494e Zdenek Kabelac
{
2263
    int i;
2264 b6a17df4 Zdenek Kabelac
    MOVContext *mov = (MOVContext *) s->priv_data;
2265 6cea494e Zdenek Kabelac
    for(i=0; i<mov->total_streams; i++)
2266
        mov_free_stream_context(mov->streams[i]);
2267 5ca1d879 Zdenek Kabelac
    /* free color tabs */
2268
    for(i=0; i<mov->ctab_size; i++)
2269
        av_freep(&mov->ctab[i]);
2270
    av_freep(&mov->ctab);
2271 6cea494e Zdenek Kabelac
    return 0;
2272
}
2273
2274 c9a65ca8 Fabrice Bellard
static AVInputFormat mov_iformat = {
2275 8536ab89 tjraivio@cc.hut.fi
    "mov,mp4,m4a,3gp,3g2",
2276 c9a65ca8 Fabrice Bellard
    "QuickTime/MPEG4 format",
2277
    sizeof(MOVContext),
2278
    mov_probe,
2279 6cea494e Zdenek Kabelac
    mov_read_header,
2280
    mov_read_packet,
2281
    mov_read_close,
2282 baf25c9d Gael Chardon
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2283
    mov_read_seek,
2284
#endif    
2285 6cea494e Zdenek Kabelac
};
2286
2287 c9a65ca8 Fabrice Bellard
int mov_init(void)
2288
{
2289
    av_register_input_format(&mov_iformat);
2290
    return 0;
2291
}