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ffmpeg / libavformat / mov.c @ a7eb3c8d

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/*
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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
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#include "qtpalette.h"
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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
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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_MPEG4, MKTAG('X', 'V', 'I', 'D') },
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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_8BPS, MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
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    { CODEC_ID_SMC, MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
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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_MPEG4AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
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    /* The standard for mpeg4 audio is still not normalised AFAIK anyway */
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    { 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_AC3, MKTAG('m', 's', 0x20, 0x00) }, /* Dolby AC-3 */
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    { CODEC_ID_NONE, 0 },
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};
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/* the QuickTime file format is quite convoluted...
137
 * it has lots of index tables, each indexing something in another one...
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 * Here we just use what is needed to read the chunks
139
 */
140

    
141
typedef struct MOV_sample_to_chunk_tbl {
142
    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;
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typedef struct {
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    int seed;
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    int flags;
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    int size;
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    void* clrs;
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} MOV_ctab_t;
159

    
160
typedef struct {
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    uint8_t  version;
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    uint32_t flags; // 24bit
163

    
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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
181
#define MP4FileODescrTag                0x11
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#define MP4ExtProfileLevelDescrTag        0x13
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#define MP4ExtDescrTagsStart                0x80
184
#define MP4ExtDescrTagsEnd                0xFE
185
    uint8_t  stream_priority;
186

    
187
    /* 0x04 DecConfigDescrTag */
188
    uint8_t  object_type_id;
189
    uint8_t  stream_type;
190
    /* XXX: really streamType is
191
     * only 6bit, followed by:
192
     * 1bit  upStream
193
     * 1bit  reserved
194
     */
195
    uint32_t buffer_size_db; // 24
196
    uint32_t max_bitrate;
197
    uint32_t avg_bitrate;
198

    
199
    /* 0x05 DecSpecificDescrTag */
200
    uint8_t  decoder_cfg_len;
201
    uint8_t *decoder_cfg;
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203
    /* 0x06 SLConfigDescrTag */
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    uint8_t  sl_config_len;
205
    uint8_t *sl_config;
206
} MOV_esds_t;
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208
struct MOVParseTableEntry;
209

    
210
typedef struct MOVStreamContext {
211
    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 ? */
213
    long next_chunk;
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    long chunk_count;
215
    int64_t *chunk_offsets;
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    long sample_to_chunk_sz;
217
    MOV_sample_to_chunk_tbl *sample_to_chunk;
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    long sample_to_chunk_index;
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    long sample_size;
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    long sample_count;
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    long *sample_sizes;
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    int time_scale;
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    long current_sample;
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    long left_in_chunk; /* how many samples before next chunk */
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    /* specific MPEG4 header which is added at the beginning of the stream */
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    int header_len;
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    uint8_t *header_data;
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    MOV_esds_t esds;
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} MOVStreamContext;
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231
typedef struct MOVContext {
232
    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) */
233
    AVFormatContext *fc;
234
    int time_scale;
235
    int duration; /* duration of the longest track */
236
    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 */
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    int64_t mdat_size;
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    int64_t mdat_offset;
240
    int total_streams;
241
    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
242
     * but we need the info to be able to skip data from those streams in the 'mdat' section
243
     */
244
    MOVStreamContext *streams[MAX_STREAMS];
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246
    int64_t next_chunk_offset;
247
    MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
248
    int ctab_size;
249
    MOV_ctab_t **ctab;           /* color tables */
250
    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
251
    /* NOTE: for recursion save to/ restore from local variable! */
252

    
253
    AVPaletteControl palette_control;
254
} MOVContext;
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256

    
257
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
258

    
259
/* those functions parse an atom */
260
/* return code:
261
 1: found what I wanted, exit
262
 0: continue to parse next atom
263
 -1: error occured, exit
264
 */
265
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
266

    
267
/* links atom IDs to parse functions */
268
typedef struct MOVParseTableEntry {
269
    uint32_t type;
270
    mov_parse_function func;
271
} MOVParseTableEntry;
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273
#ifdef DEBUG
274
/*
275
 * XXX: static sux, even more in a multithreaded environment...
276
 * Avoid them. This is here just to help debugging.
277
 */
278
static int debug_indent = 0;
279
void print_atom(const char *str, MOV_atom_t atom)
280
{
281
    unsigned int tag, i;
282
    tag = (unsigned int) atom.type;
283
    i=debug_indent;
284
    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
285
    while(i--)
286
        printf("|");
287
    printf("parse:");
288
    printf(" %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
289
           str, tag & 0xff,
290
           (tag >> 8) & 0xff,
291
           (tag >> 16) & 0xff,
292
           (tag >> 24) & 0xff,
293
           (unsigned int)atom.offset,
294
           (unsigned int)atom.size);
295
    assert((unsigned int)atom.size < 0x7fffffff);// catching errors
296
}
297
#else
298
#define print_atom(a,b)
299
#endif
300

    
301

    
302
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
303
{
304
    print_atom("leaf", atom);
305

    
306
    if (atom.size>1)
307
        url_fskip(pb, atom.size);
308
/*        url_seek(pb, atom_offset+atom.size, SEEK_SET); */
309
    return 0;
310
}
311

    
312
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
313
{
314
    int64_t total_size = 0;
315
    MOV_atom_t a;
316
    int i;
317
    int err = 0;
318

    
319
#ifdef DEBUG
320
    print_atom("default", atom);
321
    debug_indent++;
322
#endif
323

    
324
    a.offset = atom.offset;
325

    
326
    if (atom.size < 0)
327
        atom.size = 0x7fffffffffffffffLL;
328
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
329
        a.size = atom.size;
330
        a.type=0L;
331
        if(atom.size >= 8) {
332
            a.size = get_be32(pb);
333
            a.type = get_le32(pb);
334
        }
335
        total_size += 8;
336
        a.offset += 8;
337
        //printf("type: %08x  %.4s  sz: %Lx  %Lx   %Lx\n", type, (char*)&type, size, atom.size, total_size);
338
        if (a.size == 1) { /* 64 bit extended size */
339
            a.size = get_be64(pb) - 8;
340
            a.offset += 8;
341
            total_size += 8;
342
        }
343
        if (a.size == 0) {
344
            a.size = atom.size - total_size;
345
            if (a.size <= 8)
346
                break;
347
        }
348
        for (i = 0; c->parse_table[i].type != 0L
349
             && c->parse_table[i].type != a.type; i++)
350
            /* empty */;
351

    
352
        a.size -= 8;
353
//        printf(" i=%ld\n", i);
354
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
355
//            url_seek(pb, atom.offset+atom.size, SEEK_SET);
356
#ifdef DEBUG
357
            print_atom("unknown", a);
358
#endif
359
            url_fskip(pb, a.size);
360
        } else {
361
#ifdef DEBUG
362
            //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
363
            //print_atom(b, type, offset, size);
364
#endif
365
            err = (c->parse_table[i].func)(c, pb, a);
366
        }
367

    
368
        a.offset += a.size;
369
        total_size += a.size;
370
    }
371

    
372
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
373
        //printf("RESET  %Ld  %Ld  err:%d\n", atom.size, total_size, err);
374
        url_fskip(pb, atom.size - total_size);
375
    }
376

    
377
#ifdef DEBUG
378
    debug_indent--;
379
#endif
380
    return err;
381
}
382

    
383
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
384
{
385
    unsigned int len;
386
    MOV_ctab_t *t;
387
    //url_fskip(pb, atom.size); // for now
388
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
389
    t = c->ctab[c->ctab_size];
390
    t->seed = get_be32(pb);
391
    t->flags = get_be16(pb);
392
    t->size = get_be16(pb) + 1;
393
    len = 2 * t->size * 4;
394
    if (len > 0) {
395
        t->clrs = av_malloc(len); // 16bit A R G B
396
        if (t->clrs)
397
            get_buffer(pb, t->clrs, len);
398
    }
399

    
400
    return 0;
401
}
402

    
403
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
404
{
405
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
406
    int len = 0;
407
    uint32_t type;
408
    uint32_t ctype;
409

    
410
    print_atom("hdlr", atom);
411

    
412
    get_byte(pb); /* version */
413
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
414

    
415
    /* component type */
416
    ctype = get_le32(pb);
417
    type = get_le32(pb); /* component subtype */
418

    
419
#ifdef DEBUG
420
    printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
421
    printf("stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
422
#endif
423
#ifdef DEBUG
424
/* XXX: yeah this is ugly... */
425
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
426
        if(type == MKTAG('v', 'i', 'd', 'e'))
427
            puts("hdlr: vide");
428
        else if(type == MKTAG('s', 'o', 'u', 'n'))
429
            puts("hdlr: soun");
430
    } else if(ctype == 0) { /* MP4 */
431
        if(type == MKTAG('v', 'i', 'd', 'e'))
432
            puts("hdlr: vide");
433
        else if(type == MKTAG('s', 'o', 'u', 'n'))
434
            puts("hdlr: soun");
435
        else if(type == MKTAG('o', 'd', 's', 'm'))
436
            puts("hdlr: odsm");
437
        else if(type == MKTAG('s', 'd', 's', 'm'))
438
            puts("hdlr: sdsm");
439
    } else puts("hdlr: meta");
440
#endif
441

    
442
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
443
        /* helps parsing the string hereafter... */
444
        c->mp4 = 0;
445
        if(type == MKTAG('v', 'i', 'd', 'e'))
446
            st->codec.codec_type = CODEC_TYPE_VIDEO;
447
        else if(type == MKTAG('s', 'o', 'u', 'n'))
448
            st->codec.codec_type = CODEC_TYPE_AUDIO;
449
    } else if(ctype == 0) { /* MP4 */
450
        /* helps parsing the string hereafter... */
451
        c->mp4 = 1;
452
        if(type == MKTAG('v', 'i', 'd', 'e'))
453
            st->codec.codec_type = CODEC_TYPE_VIDEO;
454
        else if(type == MKTAG('s', 'o', 'u', 'n'))
455
            st->codec.codec_type = CODEC_TYPE_AUDIO;
456
    }
457
    get_be32(pb); /* component  manufacture */
458
    get_be32(pb); /* component flags */
459
    get_be32(pb); /* component flags mask */
460

    
461
    if(atom.size <= 24)
462
        return 0; /* nothing left to read */
463
    /* XXX: MP4 uses a C string, not a pascal one */
464
    /* component name */
465

    
466
    if(c->mp4) {
467
        /* .mp4: C string */
468
        while(get_byte(pb) && (++len < (atom.size - 24)));
469
    } else {
470
        /* .mov: PASCAL string */
471
#ifdef DEBUG
472
        char* buf;
473
#endif
474
        len = get_byte(pb);
475
#ifdef DEBUG
476
        buf = (uint8_t*) av_malloc(len+1);
477
        if (buf) {
478
            get_buffer(pb, buf, len);
479
            buf[len] = '\0';
480
            printf("**buf='%s'\n", buf);
481
            av_free(buf);
482
        } else
483
#endif
484
            url_fskip(pb, len);
485
    }
486

    
487
    return 0;
488
}
489

    
490
static int mov_mp4_read_descr_len(ByteIOContext *pb)
491
{
492
    int len = 0;
493
    int count = 4;
494
    while (count--) {
495
        int c = get_byte(pb);
496
        len = (len << 7) | (c & 0x7f);
497
        if (!(c & 0x80))
498
            break;
499
    }
500
    return len;
501
}
502

    
503
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
504
{
505
    int len;
506
    *tag = get_byte(pb);
507
    len = mov_mp4_read_descr_len(pb);
508
#ifdef DEBUG
509
    printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
510
#endif
511
    return len;
512
}
513

    
514
static inline unsigned int get_be24(ByteIOContext *s)
515
{
516
    unsigned int val;
517
    val = get_byte(s) << 16;
518
    val |= get_byte(s) << 8;
519
    val |= get_byte(s);
520
    return val;
521
}
522

    
523
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
524
{
525
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
526
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
527
    int64_t start_pos = url_ftell(pb);
528
    int tag, len;
529

    
530
    print_atom("esds", atom);
531

    
532
    /* Well, broken but suffisant for some MP4 streams */
533
    get_be32(pb); /* version + flags */
534
    len = mov_mp4_read_descr(pb, &tag);
535
    if (tag == MP4ESDescrTag) {
536
        get_be16(pb); /* ID */
537
        get_byte(pb); /* priority */
538
    } else
539
        get_be16(pb); /* ID */
540

    
541
    len = mov_mp4_read_descr(pb, &tag);
542
    if (tag == MP4DecConfigDescrTag) {
543
        sc->esds.object_type_id = get_byte(pb);
544
        sc->esds.stream_type = get_byte(pb);
545
        sc->esds.buffer_size_db = get_be24(pb);
546
        sc->esds.max_bitrate = get_be32(pb);
547
        sc->esds.avg_bitrate = get_be32(pb);
548

    
549
        len = mov_mp4_read_descr(pb, &tag);
550
        //printf("LEN %d  TAG %d  m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
551
        if (tag == MP4DecSpecificDescrTag) {
552
#ifdef DEBUG
553
            printf("Specific MPEG4 header len=%d\n", len);
554
#endif
555
            st->codec.extradata = (uint8_t*) av_mallocz(len);
556
            if (st->codec.extradata) {
557
                get_buffer(pb, st->codec.extradata, len);
558
                st->codec.extradata_size = len;
559
            }
560
        }
561
    }
562
    /* in any case, skip garbage */
563
    url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
564
    return 0;
565
}
566

    
567
/* this atom contains actual media data */
568
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
569
{
570
    print_atom("mdat", atom);
571

    
572
    if(atom.size == 0) /* wrong one (MP4) */
573
        return 0;
574
    c->found_mdat=1;
575
    c->mdat_offset = atom.offset;
576
    c->mdat_size = atom.size;
577
    if(c->found_moov)
578
        return 1; /* found both, just go */
579
    url_fskip(pb, atom.size);
580
    return 0; /* now go for moov */
581
}
582

    
583
/* this atom should contain all header atoms */
584
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
585
{
586
    int err;
587

    
588
    print_atom("moov", atom);
589

    
590
    err = mov_read_default(c, pb, atom);
591
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
592
    /* so we don't parse the whole file if over a network */
593
    c->found_moov=1;
594
    if(c->found_mdat)
595
        return 1; /* found both, just go */
596
    return 0; /* now go for mdat */
597
}
598

    
599

    
600
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
601
{
602
    print_atom("mdhd", atom);
603

    
604
    get_byte(pb); /* version */
605

    
606
    get_byte(pb); get_byte(pb);
607
    get_byte(pb); /* flags */
608

    
609
    get_be32(pb); /* creation time */
610
    get_be32(pb); /* modification time */
611

    
612
    c->streams[c->total_streams]->time_scale = get_be32(pb);
613

    
614
#ifdef DEBUG
615
    printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
616
#endif
617
    get_be32(pb); /* duration */
618

    
619
    get_be16(pb); /* language */
620
    get_be16(pb); /* quality */
621

    
622
    return 0;
623
}
624

    
625
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
626
{
627
    print_atom("mvhd", atom);
628

    
629
    get_byte(pb); /* version */
630
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
631

    
632
    get_be32(pb); /* creation time */
633
    get_be32(pb); /* modification time */
634
    c->time_scale = get_be32(pb); /* time scale */
635
#ifdef DEBUG
636
    printf("time scale = %i\n", c->time_scale);
637
#endif
638
    c->duration = get_be32(pb); /* duration */
639
    get_be32(pb); /* preferred scale */
640

    
641
    get_be16(pb); /* preferred volume */
642

    
643
    url_fskip(pb, 10); /* reserved */
644

    
645
    url_fskip(pb, 36); /* display matrix */
646

    
647
    get_be32(pb); /* preview time */
648
    get_be32(pb); /* preview duration */
649
    get_be32(pb); /* poster time */
650
    get_be32(pb); /* selection time */
651
    get_be32(pb); /* selection duration */
652
    get_be32(pb); /* current time */
653
    get_be32(pb); /* next track ID */
654

    
655
    return 0;
656
}
657

    
658
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
659
{
660
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
661

    
662
    // currently SVQ3 decoder expect full STSD header - so let's fake it
663
    // this should be fixed and just SMI header should be passed
664
    av_free(st->codec.extradata);
665
    st->codec.extradata_size = 0x5a + atom.size;
666
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
667

    
668
    if (st->codec.extradata) {
669
        strcpy(st->codec.extradata, "SVQ3"); // fake
670
        get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
671
        //printf("Reading SMI %Ld  %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
672
    } else
673
        url_fskip(pb, atom.size);
674

    
675
    return 0;
676
}
677

    
678
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
679
{
680
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
681
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
682
    int entries, i;
683

    
684
    print_atom("stco", atom);
685

    
686
    get_byte(pb); /* version */
687
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
688

    
689
    entries = get_be32(pb);
690
    sc->chunk_count = entries;
691
    sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
692
    if (!sc->chunk_offsets)
693
        return -1;
694
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
695
        for(i=0; i<entries; i++) {
696
            sc->chunk_offsets[i] = get_be32(pb);
697
        }
698
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
699
        for(i=0; i<entries; i++) {
700
            sc->chunk_offsets[i] = get_be64(pb);
701
        }
702
    } else
703
        return -1;
704
#ifdef DEBUG
705
/*
706
    for(i=0; i<entries; i++) {
707
        printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
708
    }
709
*/
710
#endif
711
    return 0;
712
}
713

    
714
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
715
{
716
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
717
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
718
    int entries, frames_per_sample;
719
    uint32_t format;
720

    
721
    /* for palette traversal */
722
    int color_depth;
723
    int color_start;
724
    int color_count;
725
    int color_end;
726
    int color_index;
727
    int color_dec;
728
    int color_greyscale;
729
    unsigned char *color_table;
730
    int j;
731
    unsigned char r, g, b;
732

    
733
    print_atom("stsd", atom);
734

    
735
    get_byte(pb); /* version */
736
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
737

    
738
    entries = get_be32(pb);
739

    
740
    while(entries--) { //Parsing Sample description table
741
        enum CodecID id;
742
        int size = get_be32(pb); /* size */
743
        format = get_le32(pb); /* data format */
744

    
745
        get_be32(pb); /* reserved */
746
        get_be16(pb); /* reserved */
747
        get_be16(pb); /* index */
748

    
749
        /* for MPEG4: set codec type by looking for it */
750
        id = codec_get_id(mov_video_tags, format);
751
        if (id >= 0) {
752
            AVCodec *codec;
753
            codec = avcodec_find_decoder(id);
754
            if (codec)
755
                st->codec.codec_type = codec->type;
756
        }
757
#ifdef DEBUG
758
        printf("size=%d 4CC= %c%c%c%c codec_type=%d\n",
759
               size,
760
               (format >> 0) & 0xff,
761
               (format >> 8) & 0xff,
762
               (format >> 16) & 0xff,
763
               (format >> 24) & 0xff,
764
               st->codec.codec_type);
765
#endif
766
        st->codec.codec_tag = format;
767
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
768
            MOV_atom_t a = { 0, 0, 0 };
769
            st->codec.codec_id = id;
770
            get_be16(pb); /* version */
771
            get_be16(pb); /* revision level */
772
            get_be32(pb); /* vendor */
773
            get_be32(pb); /* temporal quality */
774
            get_be32(pb); /* spacial quality */
775
            st->codec.width = get_be16(pb); /* width */
776
            st->codec.height = get_be16(pb); /* height */
777
#if 1
778
            if (st->codec.codec_id == CODEC_ID_MPEG4) {
779
                /* in some MPEG4 the width/height are not correct, so
780
                   we ignore this info */
781
                st->codec.width = 0;
782
                st->codec.height = 0;
783
            }
784
#endif
785
            get_be32(pb); /* horiz resolution */
786
            get_be32(pb); /* vert resolution */
787
            get_be32(pb); /* data size, always 0 */
788
            frames_per_sample = get_be16(pb); /* frames per samples */
789
#ifdef DEBUG
790
            printf("frames/samples = %d\n", frames_per_sample);
791
#endif
792
            get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
793

    
794
            st->codec.bits_per_sample = get_be16(pb); /* depth */
795
            st->codec.color_table_id = get_be16(pb); /* colortable id */
796

    
797
/*          These are set in mov_read_stts and might already be set!
798
            st->codec.frame_rate      = 25;
799
            st->codec.frame_rate_base = 1;
800
*/
801
            size -= (16+8*4+2+32+2*2);
802
#if 0
803
            while (size >= 8) {
804
                MOV_atom_t a;
805
                int64_t start_pos;
806

807
                a.size = get_be32(pb);
808
                a.type = get_le32(pb);
809
                size -= 8;
810
#ifdef DEBUG
811
                printf("VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
812
                       (a.type >> 0) & 0xff,
813
                       (a.type >> 8) & 0xff,
814
                       (a.type >> 16) & 0xff,
815
                       (a.type >> 24) & 0xff,
816
                       a.size, size);
817
#endif
818
                start_pos = url_ftell(pb);
819

    
820
                switch(a.type) {
821
                case MKTAG('e', 's', 'd', 's'):
822
                    {
823
                        int tag, len;
824
                        /* Well, broken but suffisant for some MP4 streams */
825
                        get_be32(pb); /* version + flags */
826
                        len = mov_mp4_read_descr(pb, &tag);
827
                        if (tag == 0x03) {
828
                            /* MP4ESDescrTag */
829
                            get_be16(pb); /* ID */
830
                            get_byte(pb); /* priority */
831
                            len = mov_mp4_read_descr(pb, &tag);
832
                            if (tag != 0x04)
833
                                goto fail;
834
                            /* MP4DecConfigDescrTag */
835
                            get_byte(pb); /* objectTypeId */
836
                            get_be32(pb); /* streamType + buffer size */
837
                            get_be32(pb); /* max bit rate */
838
                            get_be32(pb); /* avg bit rate */
839
                            len = mov_mp4_read_descr(pb, &tag);
840
                            if (tag != 0x05)
841
                                goto fail;
842
                            /* MP4DecSpecificDescrTag */
843
#ifdef DEBUG
844
                            printf("Specific MPEG4 header len=%d\n", len);
845
#endif
846
                            sc->header_data = av_mallocz(len);
847
                            if (sc->header_data) {
848
                                get_buffer(pb, sc->header_data, len);
849
                                sc->header_len = len;
850
                            }
851
                        }
852
                        /* in any case, skip garbage */
853
                    }
854
                    break;
855
                default:
856
                    break;
857
                }
858
            fail:
859
                printf("ATOMENEWSIZE %Ld   %d\n", atom.size, url_ftell(pb) - start_pos);
860
                if (atom.size > 8) {
861
                    url_fskip(pb, (atom.size - 8) -
862
                              ((url_ftell(pb) - start_pos)));
863
                    size -= atom.size - 8;
864
                }
865
            }
866
            if (size > 0) {
867
                /* unknown extension */
868
                url_fskip(pb, size);
869
            }
870
#else
871

    
872
            /* figure out the palette situation */
873
            color_depth = st->codec.bits_per_sample & 0x1F;
874
            color_greyscale = st->codec.bits_per_sample & 0x20;
875

    
876
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
877
            if ((color_depth == 2) || (color_depth == 4) || 
878
                (color_depth == 8)) {
879

    
880
                if (color_greyscale) {
881

    
882
                    /* compute the greyscale palette */
883
                    color_count = 1 << color_depth;
884
                    color_index = 255;
885
                    color_dec = 256 / (color_count - 1);
886
                    for (j = 0; j < color_count; j++) {
887
                        r = g = b = color_index;
888
                        c->palette_control.palette[j] =
889
                            (r << 16) | (g << 8) | (b);
890
                        color_index -= color_dec;
891
                        if (color_index < 0)
892
                            color_index = 0;
893
                    }
894

    
895
                } else if (st->codec.color_table_id & 0x08) {
896

    
897
                    /* if flag bit 3 is set, use the default palette */
898
                    color_count = 1 << color_depth;
899
                    if (color_depth == 2)
900
                        color_table = qt_default_palette_4;
901
                    else if (color_depth == 4)
902
                        color_table = qt_default_palette_16;
903
                    else
904
                        color_table = qt_default_palette_256;
905

    
906
                    for (j = 0; j < color_count; j++) {
907
                        r = color_table[j * 4 + 0];
908
                        g = color_table[j * 4 + 1];
909
                        b = color_table[j * 4 + 2];
910
                        c->palette_control.palette[j] =
911
                            (r << 16) | (g << 8) | (b);
912
                    }
913

    
914
                } else {
915

    
916
                    /* load the palette from the file */
917
                    color_start = get_be32(pb);
918
                    color_count = get_be16(pb);
919
                    color_end = get_be16(pb);
920
                    for (j = color_start; j <= color_end; j++) {
921
                        /* each R, G, or B component is 16 bits;
922
                         * only use the top 8 bits; skip alpha bytes
923
                         * up front */
924
                        get_byte(pb);
925
                        get_byte(pb);
926
                        r = get_byte(pb);
927
                        get_byte(pb);
928
                        g = get_byte(pb);
929
                        get_byte(pb);
930
                        b = get_byte(pb);
931
                        get_byte(pb);
932
                        c->palette_control.palette[j] =
933
                            (r << 16) | (g << 8) | (b);
934
                    }
935
                }
936

    
937
                st->codec.palctrl = &c->palette_control;
938
                st->codec.palctrl->palette_changed = 1;
939
            } else
940
                st->codec.palctrl = NULL;
941

    
942
            a.size = size;
943
            mov_read_default(c, pb, a);
944
#endif
945
        } else {
946
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
947
            if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
948
            {
949
#ifdef DEBUG
950
               printf("AMR-NB or AMR-WB audio identified!!\n");
951
#endif
952
               get_be32(pb);get_be32(pb); //Reserved_8
953
               get_be16(pb);//Reserved_2
954
               get_be16(pb);//Reserved_2
955
               get_be32(pb);//Reserved_4
956
               get_be16(pb);//TimeScale
957
               get_be16(pb);//Reserved_2
958

    
959
                //AMRSpecificBox.(10 bytes)
960
               
961
               get_be32(pb); //size
962
               get_be32(pb); //type=='damr'
963
               get_be32(pb); //vendor
964
               get_byte(pb); //decoder version
965
               get_be16(pb); //mode_set
966
               get_byte(pb); //mode_change_period
967
               get_byte(pb); //frames_per_sample
968

    
969
               st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
970
               if(st->codec.codec_id==CODEC_ID_AMR_NB)
971
               {
972
                   st->codec.sample_rate=8000;
973
                   st->codec.channels=1;
974
               }
975
               else //AMR-WB
976
               {
977
                   st->codec.sample_rate=16000;
978
                   st->codec.channels=1;
979
               }
980
               st->codec.bits_per_sample=16;
981
               st->codec.bit_rate=0; /*It is not possible to tell this before we have 
982
                                       an audio frame and even then every frame can be different*/
983
            }
984
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
985
            {
986
                //This is some stuff for the hint track, lets ignore it!
987
                //Do some mp4 auto detect.
988
                c->mp4=1;
989
                size-=(16);
990
                url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
991
            }
992
            else if(size>=(16+20))
993
            {//16 bytes read, reading atleast 20 more
994
#ifdef DEBUG
995
                printf("audio size=0x%X\n",size);
996
#endif
997
                uint16_t version = get_be16(pb); /* version */
998
                get_be16(pb); /* revision level */
999
                get_be32(pb); /* vendor */
1000

    
1001
                st->codec.channels = get_be16(pb);                /* channel count */
1002
                st->codec.bits_per_sample = get_be16(pb);        /* sample size */
1003

    
1004
                /* handle specific s8 codec */
1005
                get_be16(pb); /* compression id = 0*/
1006
                get_be16(pb); /* packet size = 0 */
1007

    
1008
                st->codec.sample_rate = ((get_be32(pb) >> 16));
1009
                //printf("CODECID %d  %d  %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1010

    
1011
                switch (st->codec.codec_id) {
1012
                case CODEC_ID_PCM_S16BE:
1013
                    if (st->codec.bits_per_sample == 8)
1014
                        st->codec.codec_id = CODEC_ID_PCM_S8;
1015
                    /* fall */
1016
                case CODEC_ID_PCM_U8:
1017
                    st->codec.bit_rate = st->codec.sample_rate * 8;
1018
                    break;
1019
                default:
1020
                    ;
1021
                }
1022

    
1023
                //Read QT version 1 fields. In version 0 theese dont exist
1024
#ifdef DEBUG
1025
                printf("version =%d mp4=%d\n",version,c->mp4);
1026
                printf("size-(16+20+16)=%d\n",size-(16+20+16));
1027
#endif
1028
                if((version==1) && size>=(16+20+16))
1029
                {
1030
                    get_be32(pb); /* samples per packet */
1031
                    get_be32(pb); /* bytes per packet */
1032
                    get_be32(pb); /* bytes per frame */
1033
                    get_be32(pb); /* bytes per sample */
1034
                    if(size>(16+20+16))
1035
                    {
1036
                        //Optional, additional atom-based fields
1037
#ifdef DEBUG
1038
                        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 ),
1039
                            (format >> 0) & 0xff,
1040
                            (format >> 8) & 0xff,
1041
                            (format >> 16) & 0xff,
1042
                            (format >> 24) & 0xff);
1043
#endif
1044
                        MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1045
                        mov_read_default(c, pb, a);
1046
                    }
1047
                }
1048
                else
1049
                {
1050
                    //We should be down to 0 bytes here, but lets make sure.
1051
                    size-=(16+20);
1052
#ifdef DEBUG
1053
                    if(size>0)
1054
                        printf("skipping 0x%X bytes\n",size-(16+20));
1055
#endif
1056
                    url_fskip(pb, size);
1057
                }
1058
            }
1059
            else
1060
            {
1061
                size-=16;
1062
                //Unknown size, but lets do our best and skip the rest.
1063
#ifdef DEBUG
1064
                printf("Strange size, skipping 0x%X bytes\n",size);
1065
#endif
1066
                url_fskip(pb, size);
1067
            }
1068
        }
1069
    }
1070

    
1071
    return 0;
1072
}
1073

    
1074
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1075
{
1076
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1077
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1078
    int entries, i;
1079

    
1080
    print_atom("stsc", atom);
1081

    
1082
    get_byte(pb); /* version */
1083
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1084

    
1085
    entries = get_be32(pb);
1086
#ifdef DEBUG
1087
printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1088
#endif
1089
    sc->sample_to_chunk_sz = entries;
1090
    sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1091
    if (!sc->sample_to_chunk)
1092
        return -1;
1093
    for(i=0; i<entries; i++) {
1094
        sc->sample_to_chunk[i].first = get_be32(pb);
1095
        sc->sample_to_chunk[i].count = get_be32(pb);
1096
        sc->sample_to_chunk[i].id = get_be32(pb);
1097
#ifdef DEBUG
1098
/*        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); */
1099
#endif
1100
    }
1101
    return 0;
1102
}
1103

    
1104
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1105
{
1106
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1107
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1108
    int entries, i;
1109

    
1110
    print_atom("stsz", atom);
1111

    
1112
    get_byte(pb); /* version */
1113
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1114

    
1115
    sc->sample_size = get_be32(pb);
1116
    entries = get_be32(pb);
1117
    sc->sample_count = entries;
1118
#ifdef DEBUG
1119
    printf("sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1120
#endif
1121
    if(sc->sample_size)
1122
        return 0; /* there isn't any table following */
1123
    sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1124
    if (!sc->sample_sizes)
1125
        return -1;
1126
    for(i=0; i<entries; i++) {
1127
        sc->sample_sizes[i] = get_be32(pb);
1128
#ifdef DEBUG
1129
/*        printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1130
#endif
1131
    }
1132
    return 0;
1133
}
1134

    
1135
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1136
{
1137
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1138
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1139
    int entries, i;
1140
    int duration=0;
1141
    int total_sample_count=0;
1142

    
1143
    print_atom("stts", atom);
1144

    
1145
    get_byte(pb); /* version */
1146
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1147
    entries = get_be32(pb);
1148

    
1149

    
1150
#ifdef DEBUG
1151
printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1152
#endif
1153
    for(i=0; i<entries; i++) {
1154
        int sample_duration;
1155
        int sample_count;
1156

    
1157
        sample_count=get_be32(pb);
1158
        sample_duration = get_be32(pb);
1159
#ifdef DEBUG
1160
        printf("sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1161
#endif
1162
        duration+=sample_duration*sample_count;
1163
        total_sample_count+=sample_count;
1164

    
1165
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1166

1167
        if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1168
            st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1169
            st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1170
#ifdef DEBUG
1171
            printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1172
#endif
1173
        }
1174
#endif
1175
    }
1176

    
1177
#define MAX(a,b) a>b?a:b
1178
#define MIN(a,b) a>b?b:a
1179
    /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1180
    if(duration>0)
1181
    {
1182
        //Find greatest common divisor to avoid overflow using the Euclidean Algorithm...
1183
        uint32_t max=MAX(duration,total_sample_count);
1184
        uint32_t min=MIN(duration,total_sample_count);
1185
        uint32_t spare=max%min;
1186

    
1187
        while(spare!=0)
1188
        {
1189
            max=min;
1190
            min=spare;
1191
            spare=max%min;
1192
        }
1193
        
1194
        duration/=min;
1195
        total_sample_count/=min;
1196

    
1197
        //Only support constant frame rate. But lets calculate the average. Needed by .mp4-files created with nec e606 3g phone.
1198
        //To get better precision, we use the duration as frame_rate_base
1199

    
1200
        st->codec.frame_rate_base=duration;
1201
        st->codec.frame_rate = c->streams[c->total_streams]->time_scale * total_sample_count;
1202

    
1203
#ifdef DEBUG
1204
        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);
1205
#endif
1206
    }
1207
    else
1208
    {
1209
        st->codec.frame_rate_base = 1;
1210
        st->codec.frame_rate = c->streams[c->total_streams]->time_scale;
1211
    }
1212
#undef MAX
1213
#undef MIN
1214
    return 0;
1215
}
1216

    
1217
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1218
{
1219
    AVStream *st;
1220
    MOVStreamContext *sc;
1221

    
1222
    print_atom("trak", atom);
1223

    
1224
    st = av_new_stream(c->fc, c->fc->nb_streams);
1225
    if (!st) return -2;
1226
    sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1227
    if (!sc) {
1228
        av_free(st);
1229
        return -1;
1230
    }
1231

    
1232
    sc->sample_to_chunk_index = -1;
1233
    st->priv_data = sc;
1234
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1235
    st->start_time = 0; /* XXX: check */
1236
    st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1237
    c->streams[c->fc->nb_streams-1] = sc;
1238

    
1239
    return mov_read_default(c, pb, atom);
1240
}
1241

    
1242
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1243
{
1244
    AVStream *st;
1245

    
1246
    print_atom("tkhd", atom);
1247

    
1248
    st = c->fc->streams[c->fc->nb_streams-1];
1249

    
1250
    get_byte(pb); /* version */
1251

    
1252
    get_byte(pb); get_byte(pb);
1253
    get_byte(pb); /* flags */
1254
    /*
1255
    MOV_TRACK_ENABLED 0x0001
1256
    MOV_TRACK_IN_MOVIE 0x0002
1257
    MOV_TRACK_IN_PREVIEW 0x0004
1258
    MOV_TRACK_IN_POSTER 0x0008
1259
    */
1260

    
1261
    get_be32(pb); /* creation time */
1262
    get_be32(pb); /* modification time */
1263
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1264
    get_be32(pb); /* reserved */
1265
    st->start_time = 0; /* check */
1266
    st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1267
    get_be32(pb); /* reserved */
1268
    get_be32(pb); /* reserved */
1269

    
1270
    get_be16(pb); /* layer */
1271
    get_be16(pb); /* alternate group */
1272
    get_be16(pb); /* volume */
1273
    get_be16(pb); /* reserved */
1274

    
1275
    url_fskip(pb, 36); /* display matrix */
1276

    
1277
    /* those are fixed-point */
1278
    st->codec.width = get_be32(pb) >> 16; /* track width */
1279
    st->codec.height = get_be32(pb) >> 16; /* track height */
1280

    
1281
    return 0;
1282
}
1283

    
1284
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1285
/* like the files created with Adobe Premiere 5.0, for samples see */
1286
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1287
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1288
{
1289
    int err;
1290

    
1291
#ifdef DEBUG
1292
    print_atom("wide", atom);
1293
    debug_indent++;
1294
#endif
1295
    if (atom.size < 8)
1296
        return 0; /* continue */
1297
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1298
        url_fskip(pb, atom.size - 4);
1299
        return 0;
1300
    }
1301
    atom.type = get_le32(pb);
1302
    atom.offset += 8;
1303
    atom.size -= 8;
1304
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1305
        url_fskip(pb, atom.size);
1306
        return 0;
1307
    }
1308
    err = mov_read_mdat(c, pb, atom);
1309
#ifdef DEBUG
1310
    debug_indent--;
1311
#endif
1312
    return err;
1313
}
1314

    
1315

    
1316
#ifdef CONFIG_ZLIB
1317
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1318
{
1319
    return -1;
1320
}
1321

    
1322
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1323
{
1324
    ByteIOContext ctx;
1325
    uint8_t *cmov_data;
1326
    uint8_t *moov_data; /* uncompressed data */
1327
    long cmov_len, moov_len;
1328
    int ret;
1329

    
1330
    print_atom("cmov", atom);
1331

    
1332
    get_be32(pb); /* dcom atom */
1333
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1334
        return -1;
1335
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1336
        dprintf("unknown compression for cmov atom !");
1337
        return -1;
1338
    }
1339
    get_be32(pb); /* cmvd atom */
1340
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1341
        return -1;
1342
    moov_len = get_be32(pb); /* uncompressed size */
1343
    cmov_len = atom.size - 6 * 4;
1344

    
1345
    cmov_data = (uint8_t *) av_malloc(cmov_len);
1346
    if (!cmov_data)
1347
        return -1;
1348
    moov_data = (uint8_t *) av_malloc(moov_len);
1349
    if (!moov_data) {
1350
        av_free(cmov_data);
1351
        return -1;
1352
    }
1353
    get_buffer(pb, cmov_data, cmov_len);
1354
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1355
        return -1;
1356
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1357
        return -1;
1358
    ctx.buf_end = ctx.buffer + moov_len;
1359
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1360
    atom.offset = 0;
1361
    atom.size = moov_len;
1362
#ifdef DEBUG
1363
    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1364
#endif
1365
    ret = mov_read_default(c, &ctx, atom);
1366
    av_free(moov_data);
1367
    av_free(cmov_data);
1368

    
1369
    return ret;
1370
}
1371
#endif
1372

    
1373
static const MOVParseTableEntry mov_default_parse_table[] = {
1374
/* mp4 atoms */
1375
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1376
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1377
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1378
{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1379
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1380
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1381
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1382
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1383
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_leaf },
1384
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1385
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1386
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1387
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1388
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1389
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1390
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1391
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1392
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1393
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1394
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1395
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1396
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1397
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1398
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1399
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1400
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1401
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1402
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_default },
1403
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1404
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1405
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1406
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1407
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1408
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1409
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1410
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1411
{ MKTAG( 's', 't', 's', 's' ), mov_read_leaf }, /* sync sample */
1412
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1413
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1414
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1415
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1416
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1417
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1418
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1419
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1420
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1421
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1422
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1423
/* extra mp4 */
1424
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1425
/* QT atoms */
1426
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1427
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1428
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1429
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1430
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1431
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1432
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1433
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1434
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1435
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1436
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1437
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1438
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1439
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1440
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1441
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1442
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1443
#ifdef CONFIG_ZLIB
1444
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1445
#else
1446
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1447
#endif
1448
{ 0L, mov_read_leaf }
1449
};
1450

    
1451
static void mov_free_stream_context(MOVStreamContext *sc)
1452
{
1453
    if(sc) {
1454
        av_free(sc->chunk_offsets);
1455
        av_free(sc->sample_to_chunk);
1456
        av_free(sc->sample_sizes);
1457
        av_free(sc->header_data);
1458
        av_free(sc);
1459
    }
1460
}
1461

    
1462
static inline uint32_t mov_to_tag(uint8_t *buf)
1463
{
1464
    return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1465
}
1466

    
1467
static inline uint32_t to_be32(uint8_t *buf)
1468
{
1469
    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1470
}
1471

    
1472
/* XXX: is it sufficient ? */
1473
static int mov_probe(AVProbeData *p)
1474
{
1475
    unsigned int offset;
1476
    uint32_t tag;
1477

    
1478
    /* check file header */
1479
    if (p->buf_size <= 12)
1480
        return 0;
1481
    offset = 0;
1482
    for(;;) {
1483
        /* ignore invalid offset */
1484
        if ((offset + 8) > (unsigned int)p->buf_size)
1485
            return 0;
1486
        tag = mov_to_tag(p->buf + offset + 4);
1487
        switch(tag) {
1488
        case MKTAG( 'm', 'o', 'o', 'v' ):
1489
        case MKTAG( 'w', 'i', 'd', 'e' ):
1490
        case MKTAG( 'f', 'r', 'e', 'e' ):
1491
        case MKTAG( 'm', 'd', 'a', 't' ):
1492
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1493
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1494
            return AVPROBE_SCORE_MAX;
1495
        case MKTAG( 'f', 't', 'y', 'p' ):
1496
        case MKTAG( 's', 'k', 'i', 'p' ):
1497
            offset = to_be32(p->buf+offset) + offset;
1498
            break;
1499
        default:
1500
            /* unrecognized tag */
1501
            return 0;
1502
        }
1503
    }
1504
    return 0;
1505
}
1506

    
1507
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1508
{
1509
    MOVContext *mov = (MOVContext *) s->priv_data;
1510
    ByteIOContext *pb = &s->pb;
1511
    int i, j, nb, err;
1512
    MOV_atom_t atom = { 0, 0, 0 };
1513

    
1514
    mov->fc = s;
1515
    mov->parse_table = mov_default_parse_table;
1516
#if 0
1517
    /* XXX: I think we should auto detect */
1518
    if(s->iformat->name[1] == 'p')
1519
        mov->mp4 = 1;
1520
#endif
1521
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1522
        atom.size = url_filesize(url_fileno(pb));
1523
    else
1524
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1525

    
1526
#ifdef DEBUG
1527
    printf("filesz=%Ld\n", atom.size);
1528
#endif
1529

    
1530
    /* check MOV header */
1531
    err = mov_read_default(mov, pb, atom);
1532
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1533
        fprintf(stderr, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1534
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1535
        return -1;
1536
    }
1537
#ifdef DEBUG
1538
    printf("on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1539
#endif
1540
    /* some cleanup : make sure we are on the mdat atom */
1541
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1542
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1543

    
1544
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1545

    
1546
#ifdef DEBUG
1547
    printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
1548
#endif
1549

    
1550
#ifdef DEBUG
1551
    printf("streams= %d\n", s->nb_streams);
1552
#endif
1553
    mov->total_streams = nb = s->nb_streams;
1554

    
1555
#if 1
1556
    for(i=0; i<s->nb_streams;) {
1557
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1558
            av_free(s->streams[i]);
1559
            for(j=i+1; j<s->nb_streams; j++)
1560
                s->streams[j-1] = s->streams[j];
1561
            s->nb_streams--;
1562
        } else
1563
            i++;
1564
    }
1565
    for(i=0; i<s->nb_streams;i++) {
1566
        MOVStreamContext *sc;
1567
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
1568
        sc->ffindex = i;
1569
        sc->is_ff_stream = 1;
1570
    }
1571
#endif
1572
#ifdef DEBUG
1573
    printf("real streams= %d\n", s->nb_streams);
1574
#endif
1575
    return 0;
1576
}
1577

    
1578
/* Yes, this is ugly... I didn't write the specs of QT :p */
1579
/* XXX:remove useless commented code sometime */
1580
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1581
{
1582
    MOVContext *mov = (MOVContext *) s->priv_data;
1583
    MOVStreamContext *sc;
1584
    int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1585
    int i;
1586
    int size;
1587
    size = 0x0FFFFFFF;
1588

    
1589
#ifdef MOV_SPLIT_CHUNKS
1590
    if (mov->partial) {
1591

    
1592
        int idx;
1593

    
1594
        sc = mov->partial;
1595
        idx = sc->sample_to_chunk_index;
1596

    
1597
        if (idx < 0) return 0;
1598
        size = sc->sample_sizes[sc->current_sample];
1599

    
1600
        sc->current_sample++;
1601
        sc->left_in_chunk--;
1602

    
1603
        if (sc->left_in_chunk <= 0)
1604
            mov->partial = 0;
1605
        offset = mov->next_chunk_offset;
1606
        /* extract the sample */
1607

    
1608
        goto readchunk;
1609
    }
1610
#endif
1611

    
1612
again:
1613
    sc = 0;
1614
    for(i=0; i<mov->total_streams; i++) {
1615
        MOVStreamContext *msc = mov->streams[i];
1616
        //printf("MOCHUNK %ld  %d   %p  pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1617
        if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1618
           && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1619
            sc = msc;
1620
            offset = msc->chunk_offsets[msc->next_chunk];
1621
            //printf("SELETED  %Ld  i:%d\n", offset, i);
1622
        }
1623
    }
1624
    if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1625
        return -1;
1626

    
1627
    sc->next_chunk++;
1628

    
1629
    if(mov->next_chunk_offset < offset) { /* some meta data */
1630
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1631
        mov->next_chunk_offset = offset;
1632
    }
1633

    
1634
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1635
    if(!sc->is_ff_stream) {
1636
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1637
        mov->next_chunk_offset = offset;
1638
        offset = 0x0FFFFFFFFFFFFFFFLL;
1639
        goto again;
1640
    }
1641

    
1642
    /* now get the chunk size... */
1643

    
1644
    for(i=0; i<mov->total_streams; i++) {
1645
        MOVStreamContext *msc = mov->streams[i];
1646
        if ((msc->next_chunk < msc->chunk_count)
1647
            && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1648
            size = msc->chunk_offsets[msc->next_chunk] - offset;
1649
    }
1650

    
1651
#ifdef MOV_MINOLTA_FIX
1652
    //Make sure that size is according to sample_size (Needed by .mov files 
1653
    //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1654
    //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1655
    //but I have no such movies
1656
    if (sc->sample_size > 0) { 
1657
        int foundsize=0;
1658
        for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1659
            if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1660
            {
1661
                foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1662
            }
1663
#ifdef DEBUG
1664
            /*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);*/
1665
#endif
1666
        }
1667
        if( (foundsize>0) && (foundsize<size) )
1668
        {
1669
#ifdef DEBUG
1670
            /*printf("this size should actually be %d\n",foundsize);*/
1671
#endif
1672
            size=foundsize;
1673
        }
1674
    }
1675
#endif //MOV_MINOLTA_FIX
1676

    
1677
#ifdef MOV_SPLIT_CHUNKS
1678
    /* split chunks into samples */
1679
    if (sc->sample_size == 0) {
1680
        int idx = sc->sample_to_chunk_index;
1681
        if ((idx + 1 < sc->sample_to_chunk_sz)
1682
            && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1683
           idx++;
1684
        sc->sample_to_chunk_index = idx;
1685
        if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1686
            mov->partial = sc;
1687
            /* we'll have to get those samples before next chunk */
1688
            sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1689
            size = sc->sample_sizes[sc->current_sample];
1690
        }
1691

    
1692
        sc->current_sample++;
1693
    }
1694
#endif
1695

    
1696
readchunk:
1697
//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1698
    if(size == 0x0FFFFFFF)
1699
        size = mov->mdat_size + mov->mdat_offset - offset;
1700
    if(size < 0)
1701
        return -1;
1702
    if(size == 0)
1703
        return -1;
1704
    url_fseek(&s->pb, offset, SEEK_SET);
1705

    
1706
    //printf("READCHUNK hlen: %d  %d off: %Ld   pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1707
    if (sc->header_len > 0) {
1708
        av_new_packet(pkt, size + sc->header_len);
1709
        memcpy(pkt->data, sc->header_data, sc->header_len);
1710
        get_buffer(&s->pb, pkt->data + sc->header_len, size);
1711
        /* free header */
1712
        av_freep(&sc->header_data);
1713
        sc->header_len = 0;
1714
    } else {
1715
        av_new_packet(pkt, size);
1716
        get_buffer(&s->pb, pkt->data, pkt->size);
1717
    }
1718
    pkt->stream_index = sc->ffindex;
1719

    
1720
#ifdef DEBUG
1721
/*
1722
    printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1723
    for(i=0; i<8; i++)
1724
        printf("%02x ", pkt->data[i]);
1725
    for(i=0; i<8; i++)
1726
        printf("%c ", (pkt->data[i]) & 0x7F);
1727
    puts("");
1728
*/
1729
#endif
1730

    
1731
    mov->next_chunk_offset = offset + size;
1732

    
1733
    return 0;
1734
}
1735

    
1736
static int mov_read_close(AVFormatContext *s)
1737
{
1738
    int i;
1739
    MOVContext *mov = (MOVContext *) s->priv_data;
1740
    for(i=0; i<mov->total_streams; i++)
1741
        mov_free_stream_context(mov->streams[i]);
1742
    /* free color tabs */
1743
    for(i=0; i<mov->ctab_size; i++)
1744
        av_freep(&mov->ctab[i]);
1745
    av_freep(&mov->ctab);
1746
    return 0;
1747
}
1748

    
1749
static AVInputFormat mov_iformat = {
1750
    "mov,mp4,m4a,3gp",
1751
    "QuickTime/MPEG4 format",
1752
    sizeof(MOVContext),
1753
    mov_probe,
1754
    mov_read_header,
1755
    mov_read_packet,
1756
    mov_read_close,
1757
};
1758

    
1759
int mov_init(void)
1760
{
1761
    av_register_input_format(&mov_iformat);
1762
    return 0;
1763
}