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ffmpeg / libavformat / mov.c @ 20f269dc

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1
/*
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 * MOV decoder.
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 * Copyright (c) 2001 Fabrice Bellard.
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 *
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 * This library is free software; you can redistribute it and/or
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 * 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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 *
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 * 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
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 * 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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 *
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 * 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
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 */
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#include "avformat.h"
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#include "avi.h"
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#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
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/*
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 * First version by Francois Revol revol@free.fr
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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),
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 *   the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
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 *   FIXED, Francois Revol, 07/17/2002
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 * - 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 :-)
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 *
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 * Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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 * 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:
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 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
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 *  http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
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 * QuickTime is a trademark of Apple (AFAIK :))
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 */
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//#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
57

    
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/* allows chunk splitting - should work now... */
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/* in case you can't read a file, try commenting */
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#define MOV_SPLIT_CHUNKS
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/* Special handling for movies created with Minolta Dimaxe Xi*/
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/* 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
70

    
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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 */
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/*  { CODEC_ID_H263, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
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/*    { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, *//* YUV with alpha-channel (AVID Uncompressed) */
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/* Graphics */
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/* 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 */
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    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
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    { CODEC_ID_MJPEG, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
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    { 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) */
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/*    { 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 */
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    { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
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    { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
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    { 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 */
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/*    { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
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    { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
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    { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
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    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
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    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
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/*    { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, *//* AVID dv */
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    { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
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    { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
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    { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
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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') }, /*  */
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    { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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    { 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 */
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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 */
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    { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG 4 AAC or audio ? */
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    /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
125
    { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
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    { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
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    { CODEC_ID_NONE, 0 },
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};
129

    
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/* the QuickTime file format is quite convoluted...
131
 * it has lots of index tables, each indexing something in another one...
132
 * Here we just use what is needed to read the chunks
133
 */
134

    
135
typedef struct MOV_sample_to_chunk_tbl {
136
    long first;
137
    long count;
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    long id;
139
} MOV_sample_to_chunk_tbl;
140

    
141
typedef struct {
142
    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) */
145
} MOV_atom_t;
146

    
147
typedef struct {
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    int seed;
149
    int flags;
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    int size;
151
    void* clrs;
152
} MOV_ctab_t;
153

    
154
typedef struct {
155
    uint8_t  version;
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    uint32_t flags; // 24bit
157

    
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    /* 0x03 ESDescrTag */
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    uint16_t es_id;
160
#define MP4ODescrTag                        0x01
161
#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
177
#define MP4ExtDescrTagsStart                0x80
178
#define MP4ExtDescrTagsEnd                0xFE
179
    uint8_t  stream_priority;
180

    
181
    /* 0x04 DecConfigDescrTag */
182
    uint8_t  object_type_id;
183
    uint8_t  stream_type;
184
    /* XXX: really streamType is
185
     * only 6bit, followed by:
186
     * 1bit  upStream
187
     * 1bit  reserved
188
     */
189
    uint32_t buffer_size_db; // 24
190
    uint32_t max_bitrate;
191
    uint32_t avg_bitrate;
192

    
193
    /* 0x05 DecSpecificDescrTag */
194
    uint8_t  decoder_cfg_len;
195
    uint8_t *decoder_cfg;
196

    
197
    /* 0x06 SLConfigDescrTag */
198
    uint8_t  sl_config_len;
199
    uint8_t *sl_config;
200
} MOV_esds_t;
201

    
202
struct MOVParseTableEntry;
203

    
204
typedef struct MOVStreamContext {
205
    int ffindex; /* the ffmpeg stream id */
206
    int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
207
    long next_chunk;
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    long chunk_count;
209
    int64_t *chunk_offsets;
210
    long sample_to_chunk_sz;
211
    MOV_sample_to_chunk_tbl *sample_to_chunk;
212
    long sample_to_chunk_index;
213
    long sample_size;
214
    long sample_count;
215
    long *sample_sizes;
216
    int time_scale;
217
    long current_sample;
218
    long left_in_chunk; /* how many samples before next chunk */
219
    /* specific MPEG4 header which is added at the beginning of the stream */
220
    int header_len;
221
    uint8_t *header_data;
222
    MOV_esds_t esds;
223
} MOVStreamContext;
224

    
225
typedef struct MOVContext {
226
    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) */
227
    AVFormatContext *fc;
228
    int time_scale;
229
    int duration; /* duration of the longest track */
230
    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
231
    int found_mdat; /* we suppose we have enough data to read the file */
232
    int64_t mdat_size;
233
    int64_t mdat_offset;
234
    int total_streams;
235
    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
236
     * but we need the info to be able to skip data from those streams in the 'mdat' section
237
     */
238
    MOVStreamContext *streams[MAX_STREAMS];
239

    
240
    int64_t next_chunk_offset;
241
    MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
242
    int ctab_size;
243
    MOV_ctab_t **ctab;           /* color tables */
244
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
245
    /* NOTE: for recursion save to/ restore from local variable! */
246
} MOVContext;
247

    
248

    
249
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
250

    
251
/* those functions parse an atom */
252
/* return code:
253
 1: found what I wanted, exit
254
 0: continue to parse next atom
255
 -1: error occured, exit
256
 */
257
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
258

    
259
/* links atom IDs to parse functions */
260
typedef struct MOVParseTableEntry {
261
    uint32_t type;
262
    mov_parse_function func;
263
} MOVParseTableEntry;
264

    
265
#ifdef DEBUG
266
/*
267
 * XXX: static sux, even more in a multithreaded environment...
268
 * Avoid them. This is here just to help debugging.
269
 */
270
static int debug_indent = 0;
271
void print_atom(const char *str, MOV_atom_t atom)
272
{
273
    unsigned int tag, i;
274
    tag = (unsigned int) atom.type;
275
    i=debug_indent;
276
    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
277
    while(i--)
278
        printf("|");
279
    printf("parse:");
280
    printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
281
           str, tag & 0xff,
282
           (tag >> 8) & 0xff,
283
           (tag >> 16) & 0xff,
284
           (tag >> 24) & 0xff,
285
           (unsigned int)atom.offset,
286
           (unsigned int)atom.size);
287
    assert((unsigned int)atom.size < 0x7fffffff);// catching errors
288
}
289
#else
290
#define print_atom(a,b)
291
#endif
292

    
293

    
294
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
295
{
296
    print_atom("leaf", atom);
297

    
298
    if (atom.size>1)
299
        url_fskip(pb, atom.size);
300
/*        url_seek(pb, atom_offset+atom.size, SEEK_SET); */
301
    return 0;
302
}
303

    
304
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
305
{
306
    int64_t total_size = 0;
307
    MOV_atom_t a;
308
    int i;
309
    int err = 0;
310

    
311
#ifdef DEBUG
312
    print_atom("default", atom);
313
    debug_indent++;
314
#endif
315

    
316
    a.offset = atom.offset;
317

    
318
    if (atom.size < 0)
319
        atom.size = 0x7fffffffffffffffLL;
320
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
321
        a.size = atom.size;
322
        a.type=0L;
323
        if(atom.size >= 8) {
324
            a.size = get_be32(pb);
325
            a.type = get_le32(pb);
326
        }
327
        total_size += 8;
328
        a.offset += 8;
329
        //printf("type: %08x  %.4s  sz: %Lx  %Lx   %Lx\n", type, (char*)&type, size, atom.size, total_size);
330
        if (a.size == 1) { /* 64 bit extended size */
331
            a.size = get_be64(pb) - 8;
332
            a.offset += 8;
333
            total_size += 8;
334
        }
335
        if (a.size == 0) {
336
            a.size = atom.size - total_size;
337
            if (a.size <= 8)
338
                break;
339
        }
340
        for (i = 0; c->parse_table[i].type != 0L
341
             && c->parse_table[i].type != a.type; i++)
342
            /* empty */;
343

    
344
        a.size -= 8;
345
//        printf(" i=%ld\n", i);
346
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
347
//            url_seek(pb, atom.offset+atom.size, SEEK_SET);
348
#ifdef DEBUG
349
            print_atom("unknown", a);
350
#endif
351
            url_fskip(pb, a.size);
352
        } else {
353
#ifdef DEBUG
354
            //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
355
            //print_atom(b, type, offset, size);
356
#endif
357
            err = (c->parse_table[i].func)(c, pb, a);
358
        }
359

    
360
        a.offset += a.size;
361
        total_size += a.size;
362
    }
363

    
364
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
365
        //printf("RESET  %Ld  %Ld  err:%d\n", atom.size, total_size, err);
366
        url_fskip(pb, atom.size - total_size);
367
    }
368

    
369
#ifdef DEBUG
370
    debug_indent--;
371
#endif
372
    return err;
373
}
374

    
375
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
376
{
377
    unsigned int len;
378
    MOV_ctab_t *t;
379
    //url_fskip(pb, atom.size); // for now
380
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
381
    t = c->ctab[c->ctab_size];
382
    t->seed = get_be32(pb);
383
    t->flags = get_be16(pb);
384
    t->size = get_be16(pb) + 1;
385
    len = 2 * t->size * 4;
386
    if (len > 0) {
387
        t->clrs = av_malloc(len); // 16bit A R G B
388
        if (t->clrs)
389
            get_buffer(pb, t->clrs, len);
390
    }
391

    
392
    return 0;
393
}
394

    
395
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
396
{
397
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
398
    int len = 0;
399
    uint32_t type;
400
    uint32_t ctype;
401

    
402
    print_atom("hdlr", atom);
403

    
404
    get_byte(pb); /* version */
405
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
406

    
407
    /* component type */
408
    ctype = get_le32(pb);
409
    type = get_le32(pb); /* component subtype */
410

    
411
#ifdef DEBUG
412
    printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
413
    printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
414
#endif
415
#ifdef DEBUG
416
/* XXX: yeah this is ugly... */
417
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
418
        if(type == MKTAG('v', 'i', 'd', 'e'))
419
            puts("hdlr: vide");
420
        else if(type == MKTAG('s', 'o', 'u', 'n'))
421
            puts("hdlr: soun");
422
    } else if(ctype == 0) { /* MP4 */
423
        if(type == MKTAG('v', 'i', 'd', 'e'))
424
            puts("hdlr: vide");
425
        else if(type == MKTAG('s', 'o', 'u', 'n'))
426
            puts("hdlr: soun");
427
        else if(type == MKTAG('o', 'd', 's', 'm'))
428
            puts("hdlr: odsm");
429
        else if(type == MKTAG('s', 'd', 's', 'm'))
430
            puts("hdlr: sdsm");
431
    } else puts("hdlr: meta");
432
#endif
433

    
434
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
435
        /* helps parsing the string hereafter... */
436
        c->mp4 = 0;
437
        if(type == MKTAG('v', 'i', 'd', 'e'))
438
            st->codec.codec_type = CODEC_TYPE_VIDEO;
439
        else if(type == MKTAG('s', 'o', 'u', 'n'))
440
            st->codec.codec_type = CODEC_TYPE_AUDIO;
441
    } else if(ctype == 0) { /* MP4 */
442
        /* helps parsing the string hereafter... */
443
        c->mp4 = 1;
444
        if(type == MKTAG('v', 'i', 'd', 'e'))
445
            st->codec.codec_type = CODEC_TYPE_VIDEO;
446
        else if(type == MKTAG('s', 'o', 'u', 'n'))
447
            st->codec.codec_type = CODEC_TYPE_AUDIO;
448
    }
449
    get_be32(pb); /* component  manufacture */
450
    get_be32(pb); /* component flags */
451
    get_be32(pb); /* component flags mask */
452

    
453
    if(atom.size <= 24)
454
        return 0; /* nothing left to read */
455
    /* XXX: MP4 uses a C string, not a pascal one */
456
    /* component name */
457

    
458
    if(c->mp4) {
459
        /* .mp4: C string */
460
        while(get_byte(pb) && (++len < (atom.size - 24)));
461
    } else {
462
        /* .mov: PASCAL string */
463
#ifdef DEBUG
464
        char* buf;
465
#endif
466
        len = get_byte(pb);
467
#ifdef DEBUG
468
        buf = (uint8_t*) av_malloc(len+1);
469
        if (buf) {
470
            get_buffer(pb, buf, len);
471
            buf[len] = '\0';
472
            printf("**buf='%s'\n", buf);
473
            av_free(buf);
474
        } else
475
#endif
476
            url_fskip(pb, len);
477
    }
478

    
479
    return 0;
480
}
481

    
482
static int mov_mp4_read_descr_len(ByteIOContext *pb)
483
{
484
    int len = 0;
485
    int count = 4;
486
    while (count--) {
487
        int c = get_byte(pb);
488
        len = (len << 7) | (c & 0x7f);
489
        if (!(c & 0x80))
490
            break;
491
    }
492
    return len;
493
}
494

    
495
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
496
{
497
    int len;
498
    *tag = get_byte(pb);
499
    len = mov_mp4_read_descr_len(pb);
500
#ifdef DEBUG
501
    printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
502
#endif
503
    return len;
504
}
505

    
506
static inline unsigned int get_be24(ByteIOContext *s)
507
{
508
    unsigned int val;
509
    val = get_byte(s) << 16;
510
    val |= get_byte(s) << 8;
511
    val |= get_byte(s);
512
    return val;
513
}
514

    
515
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
516
{
517
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
518
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
519
    int64_t start_pos = url_ftell(pb);
520
    int tag, len;
521

    
522
    print_atom("esds", atom);
523

    
524
    /* Well, broken but suffisant for some MP4 streams */
525
    get_be32(pb); /* version + flags */
526
    len = mov_mp4_read_descr(pb, &tag);
527
    if (tag == MP4ESDescrTag) {
528
        get_be16(pb); /* ID */
529
        get_byte(pb); /* priority */
530
    } else
531
        get_be16(pb); /* ID */
532

    
533
    len = mov_mp4_read_descr(pb, &tag);
534
    if (tag == MP4DecConfigDescrTag) {
535
        sc->esds.object_type_id = get_byte(pb);
536
        sc->esds.stream_type = get_byte(pb);
537
        sc->esds.buffer_size_db = get_be24(pb);
538
        sc->esds.max_bitrate = get_be32(pb);
539
        sc->esds.avg_bitrate = get_be32(pb);
540

    
541
        len = mov_mp4_read_descr(pb, &tag);
542
        //printf("LEN %d  TAG %d  m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
543
        if (tag == MP4DecSpecificDescrTag) {
544
#ifdef DEBUG
545
            printf("Specific MPEG4 header len=%d\n", len);
546
#endif
547
            st->codec.extradata = (uint8_t*) av_mallocz(len);
548
            if (st->codec.extradata) {
549
                get_buffer(pb, st->codec.extradata, len);
550
                st->codec.extradata_size = len;
551
            }
552
        }
553
    }
554
    /* in any case, skip garbage */
555
    url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
556
    return 0;
557
}
558

    
559
/* this atom contains actual media data */
560
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
561
{
562
    print_atom("mdat", atom);
563

    
564
    if(atom.size == 0) /* wrong one (MP4) */
565
        return 0;
566
    c->found_mdat=1;
567
    c->mdat_offset = atom.offset;
568
    c->mdat_size = atom.size;
569
    if(c->found_moov)
570
        return 1; /* found both, just go */
571
    url_fskip(pb, atom.size);
572
    return 0; /* now go for moov */
573
}
574

    
575
/* this atom should contain all header atoms */
576
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
577
{
578
    int err;
579

    
580
    print_atom("moov", atom);
581

    
582
    err = mov_read_default(c, pb, atom);
583
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
584
    /* so we don't parse the whole file if over a network */
585
    c->found_moov=1;
586
    if(c->found_mdat)
587
        return 1; /* found both, just go */
588
    return 0; /* now go for mdat */
589
}
590

    
591

    
592
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
593
{
594
    print_atom("mdhd", atom);
595

    
596
    get_byte(pb); /* version */
597

    
598
    get_byte(pb); get_byte(pb);
599
    get_byte(pb); /* flags */
600

    
601
    get_be32(pb); /* creation time */
602
    get_be32(pb); /* modification time */
603

    
604
    c->streams[c->total_streams]->time_scale = get_be32(pb);
605

    
606
#ifdef DEBUG
607
    printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
608
#endif
609
    get_be32(pb); /* duration */
610

    
611
    get_be16(pb); /* language */
612
    get_be16(pb); /* quality */
613

    
614
    return 0;
615
}
616

    
617
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
618
{
619
    print_atom("mvhd", atom);
620

    
621
    get_byte(pb); /* version */
622
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
623

    
624
    get_be32(pb); /* creation time */
625
    get_be32(pb); /* modification time */
626
    c->time_scale = get_be32(pb); /* time scale */
627
#ifdef DEBUG
628
    printf("time scale = %i\n", c->time_scale);
629
#endif
630
    c->duration = get_be32(pb); /* duration */
631
    get_be32(pb); /* preferred scale */
632

    
633
    get_be16(pb); /* preferred volume */
634

    
635
    url_fskip(pb, 10); /* reserved */
636

    
637
    url_fskip(pb, 36); /* display matrix */
638

    
639
    get_be32(pb); /* preview time */
640
    get_be32(pb); /* preview duration */
641
    get_be32(pb); /* poster time */
642
    get_be32(pb); /* selection time */
643
    get_be32(pb); /* selection duration */
644
    get_be32(pb); /* current time */
645
    get_be32(pb); /* next track ID */
646

    
647
    return 0;
648
}
649

    
650
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
651
{
652
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
653

    
654
    // currently SVQ3 decoder expect full STSD header - so let's fake it
655
    // this should be fixed and just SMI header should be passed
656
    av_free(st->codec.extradata);
657
    st->codec.extradata_size = 0x5a + atom.size;
658
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
659

    
660
    if (st->codec.extradata) {
661
        strcpy(st->codec.extradata, "SVQ3"); // fake
662
        get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
663
        //printf("Reading SMI %Ld  %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
664
    } else
665
        url_fskip(pb, atom.size);
666

    
667
    return 0;
668
}
669

    
670
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
671
{
672
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
673
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
674
    int entries, i;
675

    
676
    print_atom("stco", atom);
677

    
678
    get_byte(pb); /* version */
679
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
680

    
681
    entries = get_be32(pb);
682
    sc->chunk_count = entries;
683
    sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
684
    if (!sc->chunk_offsets)
685
        return -1;
686
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
687
        for(i=0; i<entries; i++) {
688
            sc->chunk_offsets[i] = get_be32(pb);
689
        }
690
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
691
        for(i=0; i<entries; i++) {
692
            sc->chunk_offsets[i] = get_be64(pb);
693
        }
694
    } else
695
        return -1;
696
#ifdef DEBUG
697
/*
698
    for(i=0; i<entries; i++) {
699
        printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
700
    }
701
*/
702
#endif
703
    return 0;
704
}
705

    
706
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
707
{
708
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
709
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
710
    int entries, frames_per_sample;
711
    uint32_t format;
712

    
713
    print_atom("stsd", atom);
714

    
715
    get_byte(pb); /* version */
716
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
717

    
718
    entries = get_be32(pb);
719

    
720
    while(entries--) { //Parsing Sample description table
721
        enum CodecID id;
722
        int size = get_be32(pb); /* size */
723
        format = get_le32(pb); /* data format */
724

    
725
        get_be32(pb); /* reserved */
726
        get_be16(pb); /* reserved */
727
        get_be16(pb); /* index */
728

    
729
        /* for MPEG4: set codec type by looking for it */
730
        id = codec_get_id(mov_video_tags, format);
731
        if (id >= 0) {
732
            AVCodec *codec;
733
            codec = avcodec_find_decoder(id);
734
            if (codec)
735
                st->codec.codec_type = codec->type;
736
        }
737
#ifdef DEBUG
738
        printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
739
               size,
740
               (format >> 0) & 0xff,
741
               (format >> 8) & 0xff,
742
               (format >> 16) & 0xff,
743
               (format >> 24) & 0xff,
744
               st->codec.codec_type);
745
#endif
746
        st->codec.codec_tag = format;
747
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
748
            MOV_atom_t a = { 0, 0, 0 };
749
            st->codec.codec_id = id;
750
            get_be16(pb); /* version */
751
            get_be16(pb); /* revision level */
752
            get_be32(pb); /* vendor */
753
            get_be32(pb); /* temporal quality */
754
            get_be32(pb); /* spacial quality */
755
            st->codec.width = get_be16(pb); /* width */
756
            st->codec.height = get_be16(pb); /* height */
757
#if 1
758
            if (st->codec.codec_id == CODEC_ID_MPEG4) {
759
                /* in some MPEG4 the width/height are not correct, so
760
                   we ignore this info */
761
                st->codec.width = 0;
762
                st->codec.height = 0;
763
            }
764
#endif
765
            get_be32(pb); /* horiz resolution */
766
            get_be32(pb); /* vert resolution */
767
            get_be32(pb); /* data size, always 0 */
768
            frames_per_sample = get_be16(pb); /* frames per samples */
769
#ifdef DEBUG
770
            printf("frames/samples = %d\n", frames_per_sample);
771
#endif
772
            get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
773

    
774
            st->codec.bits_per_sample = get_be16(pb); /* depth */
775
            st->codec.color_table_id = get_be16(pb); /* colortable id */
776

    
777
/*          These are set in mov_read_stts and might already be set!
778
            st->codec.frame_rate      = 25;
779
            st->codec.frame_rate_base = 1;
780
*/
781
            size -= (16+8*4+2+32+2*2);
782
#if 0
783
            while (size >= 8) {
784
                MOV_atom_t a;
785
                int64_t start_pos;
786

787
                a.size = get_be32(pb);
788
                a.type = get_le32(pb);
789
                size -= 8;
790
#ifdef DEBUG
791
                printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
792
                       (a.type >> 0) & 0xff,
793
                       (a.type >> 8) & 0xff,
794
                       (a.type >> 16) & 0xff,
795
                       (a.type >> 24) & 0xff,
796
                       a.size, size);
797
#endif
798
                start_pos = url_ftell(pb);
799

    
800
                switch(a.type) {
801
                case MKTAG('e', 's', 'd', 's'):
802
                    {
803
                        int tag, len;
804
                        /* Well, broken but suffisant for some MP4 streams */
805
                        get_be32(pb); /* version + flags */
806
                        len = mov_mp4_read_descr(pb, &tag);
807
                        if (tag == 0x03) {
808
                            /* MP4ESDescrTag */
809
                            get_be16(pb); /* ID */
810
                            get_byte(pb); /* priority */
811
                            len = mov_mp4_read_descr(pb, &tag);
812
                            if (tag != 0x04)
813
                                goto fail;
814
                            /* MP4DecConfigDescrTag */
815
                            get_byte(pb); /* objectTypeId */
816
                            get_be32(pb); /* streamType + buffer size */
817
                            get_be32(pb); /* max bit rate */
818
                            get_be32(pb); /* avg bit rate */
819
                            len = mov_mp4_read_descr(pb, &tag);
820
                            if (tag != 0x05)
821
                                goto fail;
822
                            /* MP4DecSpecificDescrTag */
823
#ifdef DEBUG
824
                            printf("Specific MPEG4 header len=%d\n", len);
825
#endif
826
                            sc->header_data = av_mallocz(len);
827
                            if (sc->header_data) {
828
                                get_buffer(pb, sc->header_data, len);
829
                                sc->header_len = len;
830
                            }
831
                        }
832
                        /* in any case, skip garbage */
833
                    }
834
                    break;
835
                default:
836
                    break;
837
                }
838
            fail:
839
                printf("ATOMENEWSIZE %Ld   %d\n", atom.size, url_ftell(pb) - start_pos);
840
                if (atom.size > 8) {
841
                    url_fskip(pb, (atom.size - 8) -
842
                              ((url_ftell(pb) - start_pos)));
843
                    size -= atom.size - 8;
844
                }
845
            }
846
            if (size > 0) {
847
                /* unknown extension */
848
                url_fskip(pb, size);
849
            }
850
#else
851
            a.size = size;
852
            mov_read_default(c, pb, a);
853
#endif
854
        } else {
855
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
856
            if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
857
            {
858
#ifdef DEBUG
859
               printf("AMR-NB or AMR-WB audio identified!!\n");
860
#endif
861
               get_be32(pb);get_be32(pb); //Reserved_8
862
               get_be16(pb);//Reserved_2
863
               get_be16(pb);//Reserved_2
864
               get_be32(pb);//Reserved_4
865
               get_be16(pb);//TimeScale
866
               get_be16(pb);//Reserved_2
867

    
868
                //AMRSpecificBox.(10 bytes)
869
               
870
               get_be32(pb); //size
871
               get_be32(pb); //type=='damr'
872
               get_be32(pb); //vendor
873
               get_byte(pb); //decoder version
874
               get_be16(pb); //mode_set
875
               get_byte(pb); //mode_change_period
876
               get_byte(pb); //frames_per_sample
877

    
878
               st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
879
               if(st->codec.codec_id==CODEC_ID_AMR_NB)
880
               {
881
                   st->codec.sample_rate=8000;
882
                   st->codec.channels=1;
883
               }
884
               else //AMR-WB
885
               {
886
                   st->codec.sample_rate=16000;
887
                   st->codec.channels=1;
888
               }
889
               st->codec.bits_per_sample=16;
890
               st->codec.bit_rate=0; /*It is not possible to tell this before we have 
891
                                       an audio frame and even then every frame can be different*/
892
            }
893
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
894
            {
895
                //This is some stuff for the hint track, lets ignore it!
896
                //Do some mp4 auto detect.
897
                c->mp4=1;
898
                size-=(16);
899
                url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
900
            }
901
            else if(size>=(16+20))
902
            {//16 bytes read, reading atleast 20 more
903
#ifdef DEBUG
904
                printf("audio size=0x%X\n",size);
905
#endif
906
                uint16_t version = get_be16(pb); /* version */
907
                get_be16(pb); /* revision level */
908
                get_be32(pb); /* vendor */
909

    
910
                st->codec.channels = get_be16(pb);                /* channel count */
911
                st->codec.bits_per_sample = get_be16(pb);        /* sample size */
912

    
913
                /* handle specific s8 codec */
914
                get_be16(pb); /* compression id = 0*/
915
                get_be16(pb); /* packet size = 0 */
916

    
917
                st->codec.sample_rate = ((get_be32(pb) >> 16));
918
                //printf("CODECID %d  %d  %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
919

    
920
                switch (st->codec.codec_id) {
921
                case CODEC_ID_PCM_S16BE:
922
                    if (st->codec.bits_per_sample == 8)
923
                        st->codec.codec_id = CODEC_ID_PCM_S8;
924
                    /* fall */
925
                case CODEC_ID_PCM_U8:
926
                    st->codec.bit_rate = st->codec.sample_rate * 8;
927
                    break;
928
                default:
929
                    ;
930
                }
931

    
932
                //Read QT version 1 fields. In version 0 theese dont exist
933
#ifdef DEBUG
934
                printf("version =%d mp4=%d\n",version,c->mp4);
935
                printf("size-(16+20+16)=%d\n",size-(16+20+16));
936
#endif
937
                if((version==1) && size>=(16+20+16))
938
                {
939
                    get_be32(pb); /* samples per packet */
940
                    get_be32(pb); /* bytes per packet */
941
                    get_be32(pb); /* bytes per frame */
942
                    get_be32(pb); /* bytes per sample */
943
                    if(size>(16+20+16))
944
                    {
945
                        //Optional, additional atom-based fields
946
#ifdef DEBUG
947
                        printf("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 ),
948
                            (format >> 0) & 0xff,
949
                            (format >> 8) & 0xff,
950
                            (format >> 16) & 0xff,
951
                            (format >> 24) & 0xff);
952
#endif
953
                        MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
954
                        mov_read_default(c, pb, a);
955
                    }
956
                }
957
                else
958
                {
959
                    //We should be down to 0 bytes here, but lets make sure.
960
                    size-=(16+20);
961
#ifdef DEBUG
962
                    if(size>0)
963
                        printf("skipping 0x%X bytes\n",size-(16+20));
964
#endif
965
                    url_fskip(pb, size);
966
                }
967
            }
968
            else
969
            {
970
                size-=16;
971
                //Unknown size, but lets do our best and skip the rest.
972
#ifdef DEBUG
973
                printf("Strange size, skipping 0x%X bytes\n",size);
974
#endif
975
                url_fskip(pb, size);
976
            }
977
        }
978
    }
979

    
980
    return 0;
981
}
982

    
983
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
984
{
985
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
986
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
987
    int entries, i;
988

    
989
    print_atom("stsc", atom);
990

    
991
    get_byte(pb); /* version */
992
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
993

    
994
    entries = get_be32(pb);
995
#ifdef DEBUG
996
printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
997
#endif
998
    sc->sample_to_chunk_sz = entries;
999
    sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1000
    if (!sc->sample_to_chunk)
1001
        return -1;
1002
    for(i=0; i<entries; i++) {
1003
        sc->sample_to_chunk[i].first = get_be32(pb);
1004
        sc->sample_to_chunk[i].count = get_be32(pb);
1005
        sc->sample_to_chunk[i].id = get_be32(pb);
1006
#ifdef DEBUG
1007
/*        printf("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); */
1008
#endif
1009
    }
1010
    return 0;
1011
}
1012

    
1013
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1014
{
1015
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1016
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1017
    int entries, i;
1018

    
1019
    print_atom("stsz", atom);
1020

    
1021
    get_byte(pb); /* version */
1022
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1023

    
1024
    sc->sample_size = get_be32(pb);
1025
    entries = get_be32(pb);
1026
    sc->sample_count = entries;
1027
#ifdef DEBUG
1028
    printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1029
#endif
1030
    if(sc->sample_size)
1031
        return 0; /* there isn't any table following */
1032
    sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1033
    if (!sc->sample_sizes)
1034
        return -1;
1035
    for(i=0; i<entries; i++) {
1036
        sc->sample_sizes[i] = get_be32(pb);
1037
#ifdef DEBUG
1038
/*        printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1039
#endif
1040
    }
1041
    return 0;
1042
}
1043

    
1044
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1045
{
1046
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1047
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1048
    int entries, i;
1049
    int duration=0;
1050
    int total_sample_count=0;
1051

    
1052
    print_atom("stts", atom);
1053

    
1054
    get_byte(pb); /* version */
1055
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1056
    entries = get_be32(pb);
1057

    
1058

    
1059
#ifdef DEBUG
1060
printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1061
#endif
1062
    for(i=0; i<entries; i++) {
1063
        int sample_duration;
1064
        int sample_count;
1065

    
1066
        sample_count=get_be32(pb);
1067
        sample_duration = get_be32(pb);
1068
#ifdef DEBUG
1069
        printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1070
#endif
1071
        duration+=sample_duration*sample_count;
1072
        total_sample_count+=sample_count;
1073

    
1074
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1075

1076
        if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1077
            st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1078
            st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1079
#ifdef DEBUG
1080
            printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1081
#endif
1082
        }
1083
#endif
1084
    }
1085

    
1086
#define MAX(a,b) a>b?a:b
1087
#define MIN(a,b) a>b?b:a
1088
    /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1089
    if(duration>0)
1090
    {
1091
        //Find greatest common divisor to avoid overflow using the Euclidean Algorithm...
1092
        uint32_t max=MAX(duration,total_sample_count);
1093
        uint32_t min=MIN(duration,total_sample_count);
1094
        uint32_t spare=max%min;
1095

    
1096
        while(spare!=0)
1097
        {
1098
            max=min;
1099
            min=spare;
1100
            spare=max%min;
1101
        }
1102
        
1103
        duration/=min;
1104
        total_sample_count/=min;
1105

    
1106
        //Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone.
1107
        //To get better precision, we use the duration as frame_rate_base
1108

    
1109
        st->codec.frame_rate_base=duration;
1110
        st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count;
1111

    
1112
#ifdef DEBUG
1113
        printf("FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->total_streams]->time_scale);
1114
#endif
1115
    }
1116
    else
1117
    {
1118
        st->codec.frame_rate_base = 1;
1119
        st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1120
    }
1121
#undef MAX
1122
#undef MIN
1123
    return 0;
1124
}
1125

    
1126
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1127
{
1128
    AVStream *st;
1129
    MOVStreamContext *sc;
1130

    
1131
    print_atom("trak", atom);
1132

    
1133
    st = av_new_stream(c->fc, c->fc->nb_streams);
1134
    if (!st) return -2;
1135
    sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1136
    if (!sc) {
1137
        av_free(st);
1138
        return -1;
1139
    }
1140

    
1141
    sc->sample_to_chunk_index = -1;
1142
    st->priv_data = sc;
1143
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1144
    st->start_time = 0; /* XXX: check */
1145
    st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1146
    c->streams[c->fc->nb_streams-1] = sc;
1147

    
1148
    return mov_read_default(c, pb, atom);
1149
}
1150

    
1151
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1152
{
1153
    AVStream *st;
1154

    
1155
    print_atom("tkhd", atom);
1156

    
1157
    st = c->fc->streams[c->fc->nb_streams-1];
1158

    
1159
    get_byte(pb); /* version */
1160

    
1161
    get_byte(pb); get_byte(pb);
1162
    get_byte(pb); /* flags */
1163
    /*
1164
    MOV_TRACK_ENABLED 0x0001
1165
    MOV_TRACK_IN_MOVIE 0x0002
1166
    MOV_TRACK_IN_PREVIEW 0x0004
1167
    MOV_TRACK_IN_POSTER 0x0008
1168
    */
1169

    
1170
    get_be32(pb); /* creation time */
1171
    get_be32(pb); /* modification time */
1172
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1173
    get_be32(pb); /* reserved */
1174
    st->start_time = 0; /* check */
1175
    st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1176
    get_be32(pb); /* reserved */
1177
    get_be32(pb); /* reserved */
1178

    
1179
    get_be16(pb); /* layer */
1180
    get_be16(pb); /* alternate group */
1181
    get_be16(pb); /* volume */
1182
    get_be16(pb); /* reserved */
1183

    
1184
    url_fskip(pb, 36); /* display matrix */
1185

    
1186
    /* those are fixed-point */
1187
    st->codec.width = get_be32(pb) >> 16; /* track width */
1188
    st->codec.height = get_be32(pb) >> 16; /* track height */
1189

    
1190
    return 0;
1191
}
1192

    
1193
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1194
/* like the files created with Adobe Premiere 5.0, for samples see */
1195
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1196
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1197
{
1198
    int err;
1199

    
1200
#ifdef DEBUG
1201
    print_atom("wide", atom);
1202
    debug_indent++;
1203
#endif
1204
    if (atom.size < 8)
1205
        return 0; /* continue */
1206
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1207
        url_fskip(pb, atom.size - 4);
1208
        return 0;
1209
    }
1210
    atom.type = get_le32(pb);
1211
    atom.offset += 8;
1212
    atom.size -= 8;
1213
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1214
        url_fskip(pb, atom.size);
1215
        return 0;
1216
    }
1217
    err = mov_read_mdat(c, pb, atom);
1218
#ifdef DEBUG
1219
    debug_indent--;
1220
#endif
1221
    return err;
1222
}
1223

    
1224

    
1225
#ifdef CONFIG_ZLIB
1226
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1227
{
1228
    return -1;
1229
}
1230

    
1231
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1232
{
1233
    ByteIOContext ctx;
1234
    uint8_t *cmov_data;
1235
    uint8_t *moov_data; /* uncompressed data */
1236
    long cmov_len, moov_len;
1237
    int ret;
1238

    
1239
    print_atom("cmov", atom);
1240

    
1241
    get_be32(pb); /* dcom atom */
1242
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1243
        return -1;
1244
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1245
        dprintf("unknown compression for cmov atom !");
1246
        return -1;
1247
    }
1248
    get_be32(pb); /* cmvd atom */
1249
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1250
        return -1;
1251
    moov_len = get_be32(pb); /* uncompressed size */
1252
    cmov_len = atom.size - 6 * 4;
1253

    
1254
    cmov_data = (uint8_t *) av_malloc(cmov_len);
1255
    if (!cmov_data)
1256
        return -1;
1257
    moov_data = (uint8_t *) av_malloc(moov_len);
1258
    if (!moov_data) {
1259
        av_free(cmov_data);
1260
        return -1;
1261
    }
1262
    get_buffer(pb, cmov_data, cmov_len);
1263
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1264
        return -1;
1265
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1266
        return -1;
1267
    ctx.buf_end = ctx.buffer + moov_len;
1268
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1269
    atom.offset = 0;
1270
    atom.size = moov_len;
1271
#ifdef DEBUG
1272
    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1273
#endif
1274
    ret = mov_read_default(c, &ctx, atom);
1275
    av_free(moov_data);
1276
    av_free(cmov_data);
1277

    
1278
    return ret;
1279
}
1280
#endif
1281

    
1282
static const MOVParseTableEntry mov_default_parse_table[] = {
1283
/* mp4 atoms */
1284
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1285
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1286
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1287
{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1288
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1289
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1290
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1291
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1292
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1293
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1294
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1295
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1296
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1297
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1298
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1299
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1300
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1301
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1302
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1303
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1304
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1305
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1306
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1307
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1308
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1309
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1310
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1311
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1312
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1313
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1314
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1315
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1316
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1317
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1318
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1319
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1320
{ MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* sync sample */
1321
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1322
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1323
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1324
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1325
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1326
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1327
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1328
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1329
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1330
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1331
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1332
/* extra mp4 */
1333
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1334
/* QT atoms */
1335
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1336
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1337
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1338
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1339
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1340
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1341
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1342
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1343
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1344
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1345
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1346
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1347
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1348
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1349
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1350
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1351
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1352
#ifdef CONFIG_ZLIB
1353
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1354
#else
1355
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1356
#endif
1357
{ 0L, mov_read_leaf }
1358
};
1359

    
1360
static void mov_free_stream_context(MOVStreamContext *sc)
1361
{
1362
    if(sc) {
1363
        av_free(sc->chunk_offsets);
1364
        av_free(sc->sample_to_chunk);
1365
        av_free(sc->sample_sizes);
1366
        av_free(sc->header_data);
1367
        av_free(sc);
1368
    }
1369
}
1370

    
1371
static inline uint32_t mov_to_tag(uint8_t *buf)
1372
{
1373
    return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1374
}
1375

    
1376
static inline uint32_t to_be32(uint8_t *buf)
1377
{
1378
    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1379
}
1380

    
1381
/* XXX: is it sufficient ? */
1382
static int mov_probe(AVProbeData *p)
1383
{
1384
    unsigned int offset;
1385
    uint32_t tag;
1386

    
1387
    /* check file header */
1388
    if (p->buf_size <= 12)
1389
        return 0;
1390
    offset = 0;
1391
    for(;;) {
1392
        /* ignore invalid offset */
1393
        if ((offset + 8) > (unsigned int)p->buf_size)
1394
            return 0;
1395
        tag = mov_to_tag(p->buf + offset + 4);
1396
        switch(tag) {
1397
        case MKTAG( 'm', 'o', 'o', 'v' ):
1398
        case MKTAG( 'w', 'i', 'd', 'e' ):
1399
        case MKTAG( 'f', 'r', 'e', 'e' ):
1400
        case MKTAG( 'm', 'd', 'a', 't' ):
1401
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1402
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1403
            return AVPROBE_SCORE_MAX;
1404
        case MKTAG( 'f', 't', 'y', 'p' ):
1405
        case MKTAG( 's', 'k', 'i', 'p' ):
1406
            offset = to_be32(p->buf+offset) + offset;
1407
            break;
1408
        default:
1409
            /* unrecognized tag */
1410
            return 0;
1411
        }
1412
    }
1413
    return 0;
1414
}
1415

    
1416
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1417
{
1418
    MOVContext *mov = (MOVContext *) s->priv_data;
1419
    ByteIOContext *pb = &s->pb;
1420
    int i, j, nb, err;
1421
    MOV_atom_t atom = { 0, 0, 0 };
1422

    
1423
    mov->fc = s;
1424
    mov->parse_table = mov_default_parse_table;
1425
#if 0
1426
    /* XXX: I think we should auto detect */
1427
    if(s->iformat->name[1] == 'p')
1428
        mov->mp4 = 1;
1429
#endif
1430
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1431
        atom.size = url_filesize(url_fileno(pb));
1432
    else
1433
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1434

    
1435
#ifdef DEBUG
1436
    printf("filesz=%Ld\n", atom.size);
1437
#endif
1438

    
1439
    /* check MOV header */
1440
    err = mov_read_default(mov, pb, atom);
1441
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1442
        fprintf(stderr, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1443
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1444
        return -1;
1445
    }
1446
#ifdef DEBUG
1447
    printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1448
#endif
1449
    /* some cleanup : make sure we are on the mdat atom */
1450
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1451
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1452

    
1453
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1454

    
1455
#ifdef DEBUG
1456
    printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1457
#endif
1458

    
1459
#ifdef DEBUG
1460
    printf("streams= %d\n", s->nb_streams);
1461
#endif
1462
    mov->total_streams = nb = s->nb_streams;
1463

    
1464
#if 1
1465
    for(i=0; i<s->nb_streams;) {
1466
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1467
            av_free(s->streams[i]);
1468
            for(j=i+1; j<s->nb_streams; j++)
1469
                s->streams[j-1] = s->streams[j];
1470
            s->nb_streams--;
1471
        } else
1472
            i++;
1473
    }
1474
    for(i=0; i<s->nb_streams;i++) {
1475
        MOVStreamContext *sc;
1476
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
1477
        sc->ffindex = i;
1478
        sc->is_ff_stream = 1;
1479
    }
1480
#endif
1481
#ifdef DEBUG
1482
    printf("real streams= %d\n", s->nb_streams);
1483
#endif
1484
    return 0;
1485
}
1486

    
1487
/* Yes, this is ugly... I didn't write the specs of QT :p */
1488
/* XXX:remove useless commented code sometime */
1489
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1490
{
1491
    MOVContext *mov = (MOVContext *) s->priv_data;
1492
    MOVStreamContext *sc;
1493
    int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1494
    int i;
1495
    int size;
1496
    size = 0x0FFFFFFF;
1497

    
1498
#ifdef MOV_SPLIT_CHUNKS
1499
    if (mov->partial) {
1500

    
1501
        int idx;
1502

    
1503
        sc = mov->partial;
1504
        idx = sc->sample_to_chunk_index;
1505

    
1506
        if (idx < 0) return 0;
1507
        size = sc->sample_sizes[sc->current_sample];
1508

    
1509
        sc->current_sample++;
1510
        sc->left_in_chunk--;
1511

    
1512
        if (sc->left_in_chunk <= 0)
1513
            mov->partial = 0;
1514
        offset = mov->next_chunk_offset;
1515
        /* extract the sample */
1516

    
1517
        goto readchunk;
1518
    }
1519
#endif
1520

    
1521
again:
1522
    sc = 0;
1523
    for(i=0; i<mov->total_streams; i++) {
1524
        MOVStreamContext *msc = mov->streams[i];
1525
        //printf("MOCHUNK %ld  %d   %p  pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1526
        if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1527
           && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1528
            sc = msc;
1529
            offset = msc->chunk_offsets[msc->next_chunk];
1530
            //printf("SELETED  %Ld  i:%d\n", offset, i);
1531
        }
1532
    }
1533
    if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1534
        return -1;
1535

    
1536
    sc->next_chunk++;
1537

    
1538
    if(mov->next_chunk_offset < offset) { /* some meta data */
1539
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1540
        mov->next_chunk_offset = offset;
1541
    }
1542

    
1543
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1544
    if(!sc->is_ff_stream) {
1545
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1546
        mov->next_chunk_offset = offset;
1547
        offset = 0x0FFFFFFFFFFFFFFFLL;
1548
        goto again;
1549
    }
1550

    
1551
    /* now get the chunk size... */
1552

    
1553
    for(i=0; i<mov->total_streams; i++) {
1554
        MOVStreamContext *msc = mov->streams[i];
1555
        if ((msc->next_chunk < msc->chunk_count)
1556
            && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1557
            size = msc->chunk_offsets[msc->next_chunk] - offset;
1558
    }
1559

    
1560
#ifdef MOV_MINOLTA_FIX
1561
    //Make sure that size is according to sample_size (Needed by .mov files 
1562
    //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1563
    //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1564
    //but I have no such movies
1565
    if (sc->sample_size > 0) { 
1566
        int foundsize=0;
1567
        for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1568
            if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1569
            {
1570
                foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1571
            }
1572
#ifdef DEBUG
1573
            /*printf("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);*/
1574
#endif
1575
        }
1576
        if( (foundsize>0) && (foundsize<size) )
1577
        {
1578
#ifdef DEBUG
1579
            /*printf("this size should actually be %d\n",foundsize);*/
1580
#endif
1581
            size=foundsize;
1582
        }
1583
    }
1584
#endif //MOV_MINOLTA_FIX
1585

    
1586
#ifdef MOV_SPLIT_CHUNKS
1587
    /* split chunks into samples */
1588
    if (sc->sample_size == 0) {
1589
        int idx = sc->sample_to_chunk_index;
1590
        if ((idx + 1 < sc->sample_to_chunk_sz)
1591
            && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1592
           idx++;
1593
        sc->sample_to_chunk_index = idx;
1594
        if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1595
            mov->partial = sc;
1596
            /* we'll have to get those samples before next chunk */
1597
            sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1598
            size = sc->sample_sizes[sc->current_sample];
1599
        }
1600

    
1601
        sc->current_sample++;
1602
    }
1603
#endif
1604

    
1605
readchunk:
1606
//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1607
    if(size == 0x0FFFFFFF)
1608
        size = mov->mdat_size + mov->mdat_offset - offset;
1609
    if(size < 0)
1610
        return -1;
1611
    if(size == 0)
1612
        return -1;
1613
    url_fseek(&s->pb, offset, SEEK_SET);
1614

    
1615
    //printf("READCHUNK hlen: %d  %d off: %Ld   pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1616
    if (sc->header_len > 0) {
1617
        av_new_packet(pkt, size + sc->header_len);
1618
        memcpy(pkt->data, sc->header_data, sc->header_len);
1619
        get_buffer(&s->pb, pkt->data + sc->header_len, size);
1620
        /* free header */
1621
        av_freep(&sc->header_data);
1622
        sc->header_len = 0;
1623
    } else {
1624
        av_new_packet(pkt, size);
1625
        get_buffer(&s->pb, pkt->data, pkt->size);
1626
    }
1627
    pkt->stream_index = sc->ffindex;
1628

    
1629
#ifdef DEBUG
1630
/*
1631
    printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1632
    for(i=0; i<8; i++)
1633
        printf("%02x ", pkt->data[i]);
1634
    for(i=0; i<8; i++)
1635
        printf("%c ", (pkt->data[i]) & 0x7F);
1636
    puts("");
1637
*/
1638
#endif
1639

    
1640
    mov->next_chunk_offset = offset + size;
1641

    
1642
    return 0;
1643
}
1644

    
1645
static int mov_read_close(AVFormatContext *s)
1646
{
1647
    int i;
1648
    MOVContext *mov = (MOVContext *) s->priv_data;
1649
    for(i=0; i<mov->total_streams; i++)
1650
        mov_free_stream_context(mov->streams[i]);
1651
    for(i=0; i<s->nb_streams; i++)
1652
        av_freep(&s->streams[i]);
1653
    /* free color tabs */
1654
    for(i=0; i<mov->ctab_size; i++)
1655
        av_freep(&mov->ctab[i]);
1656
    av_freep(&mov->ctab);
1657
    return 0;
1658
}
1659

    
1660
static AVInputFormat mov_iformat = {
1661
    "mov",
1662
    "QuickTime/MPEG4 format",
1663
    sizeof(MOVContext),
1664
    mov_probe,
1665
    mov_read_header,
1666
    mov_read_packet,
1667
    mov_read_close,
1668
};
1669

    
1670
int mov_init(void)
1671
{
1672
    av_register_input_format(&mov_iformat);
1673
    return 0;
1674
}