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ffmpeg / libavformat / mov.c @ d08d7142

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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 <limits.h>
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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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 * Seek function by Gael Chardon gael.dev@4now.net 
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 *
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 * Features and limitations:
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 * - reads most of the QT files I have (at least the structure),
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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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 * - seek is not supported with files that contain edit list
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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/documentation/QuickTime/QTFF/
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 *  http://developer.apple.com/documentation/QuickTime/QTFF/qtff.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 seeking (MOV_SPLIT_CHUNKS should also be defined) */
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#define MOV_SEEK
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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_QTRLE, MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
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    { CODEC_ID_QDRAW, MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
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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...
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 * 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
150
 */
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typedef struct MOV_sample_to_chunk_tbl {
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    long first;
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    long count;
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    long id;
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} MOV_sample_to_chunk_tbl;
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typedef struct {
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    uint32_t type;
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    int64_t offset;
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    int64_t size; /* total size (excluding the size and type fields) */
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} MOV_atom_t;
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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;
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171
typedef struct {
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    uint8_t  version;
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    uint32_t flags; // 24bit
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    /* 0x03 ESDescrTag */
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    uint16_t es_id;
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#define MP4ODescrTag                        0x01
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#define MP4IODescrTag                        0x02
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#define MP4ESDescrTag                        0x03
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#define MP4DecConfigDescrTag                0x04
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#define MP4DecSpecificDescrTag                0x05
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#define MP4SLConfigDescrTag                0x06
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#define MP4ContentIdDescrTag                0x07
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#define MP4SupplContentIdDescrTag        0x08
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#define MP4IPIPtrDescrTag                0x09
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#define MP4IPMPPtrDescrTag                0x0A
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#define MP4IPMPDescrTag                        0x0B
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#define MP4RegistrationDescrTag                0x0D
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#define MP4ESIDIncDescrTag                0x0E
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#define MP4ESIDRefDescrTag                0x0F
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#define MP4FileIODescrTag                0x10
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#define MP4FileODescrTag                0x11
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#define MP4ExtProfileLevelDescrTag        0x13
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#define MP4ExtDescrTagsStart                0x80
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#define MP4ExtDescrTagsEnd                0xFE
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    uint8_t  stream_priority;
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198
    /* 0x04 DecConfigDescrTag */
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    uint8_t  object_type_id;
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    uint8_t  stream_type;
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    /* XXX: really streamType is
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     * only 6bit, followed by:
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     * 1bit  upStream
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     * 1bit  reserved
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     */
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    uint32_t buffer_size_db; // 24
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    uint32_t max_bitrate;
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    uint32_t avg_bitrate;
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210
    /* 0x05 DecSpecificDescrTag */
211
    uint8_t  decoder_cfg_len;
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    uint8_t *decoder_cfg;
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214
    /* 0x06 SLConfigDescrTag */
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    uint8_t  sl_config_len;
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    uint8_t *sl_config;
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} MOV_esds_t;
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219
struct MOVParseTableEntry;
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221
typedef struct MOVStreamContext {
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    int ffindex; /* the ffmpeg stream id */
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    int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
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    long next_chunk;
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    long chunk_count;
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    int64_t *chunk_offsets;
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    int32_t stts_count;
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    uint64_t *stts_data;            /* concatenated data from the time-to-sample atom (count|duration) */
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    int32_t edit_count;             /* number of 'edit' (elst atom) */
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    long sample_to_chunk_sz;
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    MOV_sample_to_chunk_tbl *sample_to_chunk;
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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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    long keyframe_count;
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    long *keyframes;
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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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247
typedef struct MOVContext {
248
    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) */
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    AVFormatContext *fc;
250
    int time_scale;
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    int duration; /* duration of the longest track */
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    int found_moov; /* when both 'moov' and 'mdat' sections has been found */
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    int found_mdat; /* we suppose we have enough data to read the file */
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    int64_t mdat_size;
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    int64_t mdat_offset;
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    int total_streams;
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    /* some streams listed here aren't presented to the ffmpeg API, since they aren't either video nor audio
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     * but we need the info to be able to skip data from those streams in the 'mdat' section
259
     */
260
    MOVStreamContext *streams[MAX_STREAMS];
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262
    int64_t next_chunk_offset;
263
    MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
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    int ctab_size;
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    MOV_ctab_t **ctab;           /* color tables */
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    const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
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    /* NOTE: for recursion save to/ restore from local variable! */
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269
    AVPaletteControl palette_control;
270
} MOVContext;
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272

    
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/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
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/* those functions parse an atom */
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/* return code:
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 1: found what I wanted, exit
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 0: continue to parse next atom
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 -1: error occured, exit
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 */
281
typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
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283
/* links atom IDs to parse functions */
284
typedef struct MOVParseTableEntry {
285
    uint32_t type;
286
    mov_parse_function func;
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} MOVParseTableEntry;
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#ifdef DEBUG
290
/*
291
 * XXX: static sux, even more in a multithreaded environment...
292
 * Avoid them. This is here just to help debugging.
293
 */
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static int debug_indent = 0;
295
void print_atom(const char *str, MOV_atom_t atom)
296
{
297
    unsigned int tag, i;
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    tag = (unsigned int) atom.type;
299
    i=debug_indent;
300
    if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
301
    while(i--)
302
        av_log(NULL, AV_LOG_DEBUG, "|");
303
    av_log(NULL, AV_LOG_DEBUG, "parse:");
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    av_log(NULL, AV_LOG_DEBUG, " %s: tag=%c%c%c%c offset=0x%x size=0x%x\n",
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           str, tag & 0xff,
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           (tag >> 8) & 0xff,
307
           (tag >> 16) & 0xff,
308
           (tag >> 24) & 0xff,
309
           (unsigned int)atom.offset,
310
           (unsigned int)atom.size);
311
    assert((unsigned int)atom.size < 0x7fffffff);// catching errors
312
}
313
#else
314
#define print_atom(a,b)
315
#endif
316

    
317

    
318
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
319
{
320
    print_atom("leaf", atom);
321

    
322
    if (atom.size>1)
323
        url_fskip(pb, atom.size);
324
/*        url_seek(pb, atom_offset+atom.size, SEEK_SET); */
325
    return 0;
326
}
327

    
328
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
329
{
330
    int64_t total_size = 0;
331
    MOV_atom_t a;
332
    int i;
333
    int err = 0;
334

    
335
#ifdef DEBUG
336
    print_atom("default", atom);
337
    debug_indent++;
338
#endif
339

    
340
    a.offset = atom.offset;
341

    
342
    if (atom.size < 0)
343
        atom.size = 0x7fffffffffffffffLL;
344
    while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
345
        a.size = atom.size;
346
        a.type=0L;
347
        if(atom.size >= 8) {
348
            a.size = get_be32(pb);
349
            a.type = get_le32(pb);
350
        }
351
        total_size += 8;
352
        a.offset += 8;
353
        //av_log(NULL, AV_LOG_DEBUG, "type: %08x  %.4s  sz: %Lx  %Lx   %Lx\n", type, (char*)&type, size, atom.size, total_size);
354
        if (a.size == 1) { /* 64 bit extended size */
355
            a.size = get_be64(pb) - 8;
356
            a.offset += 8;
357
            total_size += 8;
358
        }
359
        if (a.size == 0) {
360
            a.size = atom.size - total_size;
361
            if (a.size <= 8)
362
                break;
363
        }
364
        for (i = 0; c->parse_table[i].type != 0L
365
             && c->parse_table[i].type != a.type; i++)
366
            /* empty */;
367

    
368
        a.size -= 8;
369
//        av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
370
        if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
371
//            url_seek(pb, atom.offset+atom.size, SEEK_SET);
372
#ifdef DEBUG
373
            print_atom("unknown", a);
374
#endif
375
            url_fskip(pb, a.size);
376
        } else {
377
#ifdef DEBUG
378
            //char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
379
            //print_atom(b, type, offset, size);
380
#endif
381
            err = (c->parse_table[i].func)(c, pb, a);
382
        }
383

    
384
        a.offset += a.size;
385
        total_size += a.size;
386
    }
387

    
388
    if (!err && total_size < atom.size && atom.size < 0x7ffff) {
389
        //av_log(NULL, AV_LOG_DEBUG, "RESET  %Ld  %Ld  err:%d\n", atom.size, total_size, err);
390
        url_fskip(pb, atom.size - total_size);
391
    }
392

    
393
#ifdef DEBUG
394
    debug_indent--;
395
#endif
396
    return err;
397
}
398

    
399
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
400
{
401
    unsigned int len;
402
    MOV_ctab_t *t;
403
    //url_fskip(pb, atom.size); // for now
404
    c->ctab = av_realloc(c->ctab, ++c->ctab_size);
405
    t = c->ctab[c->ctab_size];
406
    t->seed = get_be32(pb);
407
    t->flags = get_be16(pb);
408
    t->size = get_be16(pb) + 1;
409
    len = 2 * t->size * 4;
410
    if (len > 0) {
411
        t->clrs = av_malloc(len); // 16bit A R G B
412
        if (t->clrs)
413
            get_buffer(pb, t->clrs, len);
414
    }
415

    
416
    return 0;
417
}
418

    
419
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
420
{
421
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
422
    int len = 0;
423
    uint32_t type;
424
    uint32_t ctype;
425

    
426
    print_atom("hdlr", atom);
427

    
428
    get_byte(pb); /* version */
429
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
430

    
431
    /* component type */
432
    ctype = get_le32(pb);
433
    type = get_le32(pb); /* component subtype */
434

    
435
#ifdef DEBUG
436
    av_log(NULL, AV_LOG_DEBUG, "ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
437
    av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
438
#endif
439
#ifdef DEBUG
440
/* XXX: yeah this is ugly... */
441
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
442
        if(type == MKTAG('v', 'i', 'd', 'e'))
443
            puts("hdlr: vide");
444
        else if(type == MKTAG('s', 'o', 'u', 'n'))
445
            puts("hdlr: soun");
446
    } else if(ctype == 0) { /* MP4 */
447
        if(type == MKTAG('v', 'i', 'd', 'e'))
448
            puts("hdlr: vide");
449
        else if(type == MKTAG('s', 'o', 'u', 'n'))
450
            puts("hdlr: soun");
451
        else if(type == MKTAG('o', 'd', 's', 'm'))
452
            puts("hdlr: odsm");
453
        else if(type == MKTAG('s', 'd', 's', 'm'))
454
            puts("hdlr: sdsm");
455
    } else puts("hdlr: meta");
456
#endif
457

    
458
    if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
459
        /* helps parsing the string hereafter... */
460
        c->mp4 = 0;
461
        if(type == MKTAG('v', 'i', 'd', 'e'))
462
            st->codec.codec_type = CODEC_TYPE_VIDEO;
463
        else if(type == MKTAG('s', 'o', 'u', 'n'))
464
            st->codec.codec_type = CODEC_TYPE_AUDIO;
465
    } else if(ctype == 0) { /* MP4 */
466
        /* helps parsing the string hereafter... */
467
        c->mp4 = 1;
468
        if(type == MKTAG('v', 'i', 'd', 'e'))
469
            st->codec.codec_type = CODEC_TYPE_VIDEO;
470
        else if(type == MKTAG('s', 'o', 'u', 'n'))
471
            st->codec.codec_type = CODEC_TYPE_AUDIO;
472
    }
473
    get_be32(pb); /* component  manufacture */
474
    get_be32(pb); /* component flags */
475
    get_be32(pb); /* component flags mask */
476

    
477
    if(atom.size <= 24)
478
        return 0; /* nothing left to read */
479
    /* XXX: MP4 uses a C string, not a pascal one */
480
    /* component name */
481

    
482
    if(c->mp4) {
483
        /* .mp4: C string */
484
        while(get_byte(pb) && (++len < (atom.size - 24)));
485
    } else {
486
        /* .mov: PASCAL string */
487
#ifdef DEBUG
488
        char* buf;
489
#endif
490
        len = get_byte(pb);
491
#ifdef DEBUG
492
        buf = (uint8_t*) av_malloc(len+1);
493
        if (buf) {
494
            get_buffer(pb, buf, len);
495
            buf[len] = '\0';
496
            av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
497
            av_free(buf);
498
        } else
499
#endif
500
            url_fskip(pb, len);
501
    }
502

    
503
    url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
504
    return 0;
505
}
506

    
507
static int mov_mp4_read_descr_len(ByteIOContext *pb)
508
{
509
    int len = 0;
510
    int count = 4;
511
    while (count--) {
512
        int c = get_byte(pb);
513
        len = (len << 7) | (c & 0x7f);
514
        if (!(c & 0x80))
515
            break;
516
    }
517
    return len;
518
}
519

    
520
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
521
{
522
    int len;
523
    *tag = get_byte(pb);
524
    len = mov_mp4_read_descr_len(pb);
525
#ifdef DEBUG
526
    av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
527
#endif
528
    return len;
529
}
530

    
531
static inline unsigned int get_be24(ByteIOContext *s)
532
{
533
    unsigned int val;
534
    val = get_byte(s) << 16;
535
    val |= get_byte(s) << 8;
536
    val |= get_byte(s);
537
    return val;
538
}
539

    
540
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
541
{
542
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
543
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
544
    int64_t start_pos = url_ftell(pb);
545
    int tag, len;
546

    
547
    print_atom("esds", atom);
548

    
549
    /* Well, broken but suffisant for some MP4 streams */
550
    get_be32(pb); /* version + flags */
551
    len = mov_mp4_read_descr(pb, &tag);
552
    if (tag == MP4ESDescrTag) {
553
        get_be16(pb); /* ID */
554
        get_byte(pb); /* priority */
555
    } else
556
        get_be16(pb); /* ID */
557

    
558
    len = mov_mp4_read_descr(pb, &tag);
559
    if (tag == MP4DecConfigDescrTag) {
560
        sc->esds.object_type_id = get_byte(pb);
561
        sc->esds.stream_type = get_byte(pb);
562
        sc->esds.buffer_size_db = get_be24(pb);
563
        sc->esds.max_bitrate = get_be32(pb);
564
        sc->esds.avg_bitrate = get_be32(pb);
565

    
566
        len = mov_mp4_read_descr(pb, &tag);
567
        //av_log(NULL, AV_LOG_DEBUG, "LEN %d  TAG %d  m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
568
        if (tag == MP4DecSpecificDescrTag) {
569
#ifdef DEBUG
570
            av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
571
#endif
572
            st->codec.extradata = (uint8_t*) av_mallocz(len);
573
            if (st->codec.extradata) {
574
                get_buffer(pb, st->codec.extradata, len);
575
                st->codec.extradata_size = len;
576
            }
577
        }
578
    }
579
    /* in any case, skip garbage */
580
    url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
581
    return 0;
582
}
583

    
584
/* this atom contains actual media data */
585
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
586
{
587
    print_atom("mdat", atom);
588

    
589
    if(atom.size == 0) /* wrong one (MP4) */
590
        return 0;
591
    c->found_mdat=1;
592
    c->mdat_offset = atom.offset;
593
    c->mdat_size = atom.size;
594
    if(c->found_moov)
595
        return 1; /* found both, just go */
596
    url_fskip(pb, atom.size);
597
    return 0; /* now go for moov */
598
}
599

    
600
/* this atom should contain all header atoms */
601
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
602
{
603
    int err;
604

    
605
    print_atom("moov", atom);
606

    
607
    err = mov_read_default(c, pb, atom);
608
    /* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
609
    /* so we don't parse the whole file if over a network */
610
    c->found_moov=1;
611
    if(c->found_mdat)
612
        return 1; /* found both, just go */
613
    return 0; /* now go for mdat */
614
}
615

    
616

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

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

    
623
    get_byte(pb); get_byte(pb);
624
    get_byte(pb); /* flags */
625

    
626
    get_be32(pb); /* creation time */
627
    get_be32(pb); /* modification time */
628

    
629
    c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
630

    
631
#ifdef DEBUG
632
    av_log(NULL, AV_LOG_DEBUG, "track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->time_scale); /* time scale */
633
#endif
634
    get_be32(pb); /* duration */
635

    
636
    get_be16(pb); /* language */
637
    get_be16(pb); /* quality */
638

    
639
    return 0;
640
}
641

    
642
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
643
{
644
    print_atom("mvhd", atom);
645

    
646
    get_byte(pb); /* version */
647
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
648

    
649
    get_be32(pb); /* creation time */
650
    get_be32(pb); /* modification time */
651
    c->time_scale = get_be32(pb); /* time scale */
652
#ifdef DEBUG
653
    av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
654
#endif
655
    c->duration = get_be32(pb); /* duration */
656
    get_be32(pb); /* preferred scale */
657

    
658
    get_be16(pb); /* preferred volume */
659

    
660
    url_fskip(pb, 10); /* reserved */
661

    
662
    url_fskip(pb, 36); /* display matrix */
663

    
664
    get_be32(pb); /* preview time */
665
    get_be32(pb); /* preview duration */
666
    get_be32(pb); /* poster time */
667
    get_be32(pb); /* selection time */
668
    get_be32(pb); /* selection duration */
669
    get_be32(pb); /* current time */
670
    get_be32(pb); /* next track ID */
671

    
672
    return 0;
673
}
674

    
675
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
676
{
677
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
678

    
679
    // currently SVQ3 decoder expect full STSD header - so let's fake it
680
    // this should be fixed and just SMI header should be passed
681
    av_free(st->codec.extradata);
682
    st->codec.extradata_size = 0x5a + atom.size;
683
    st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size);
684

    
685
    if (st->codec.extradata) {
686
        strcpy(st->codec.extradata, "SVQ3"); // fake
687
        get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
688
        //av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld  %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
689
    } else
690
        url_fskip(pb, atom.size);
691

    
692
    return 0;
693
}
694

    
695
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
696
{
697
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
698
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
699
    int entries, i;
700

    
701
    print_atom("stco", atom);
702

    
703
    get_byte(pb); /* version */
704
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
705

    
706
    entries = get_be32(pb);
707
    sc->chunk_count = entries;
708
    sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
709
    if (!sc->chunk_offsets)
710
        return -1;
711
    if (atom.type == MKTAG('s', 't', 'c', 'o')) {
712
        for(i=0; i<entries; i++) {
713
            sc->chunk_offsets[i] = get_be32(pb);
714
        }
715
    } else if (atom.type == MKTAG('c', 'o', '6', '4')) {
716
        for(i=0; i<entries; i++) {
717
            sc->chunk_offsets[i] = get_be64(pb);
718
        }
719
    } else
720
        return -1;
721
#ifdef DEBUG
722
/*
723
    for(i=0; i<entries; i++) {
724
        av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
725
    }
726
*/
727
#endif
728
    return 0;
729
}
730

    
731
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
732
{
733
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
734
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
735
    int entries, frames_per_sample;
736
    uint32_t format;
737

    
738
    /* for palette traversal */
739
    int color_depth;
740
    int color_start;
741
    int color_count;
742
    int color_end;
743
    int color_index;
744
    int color_dec;
745
    int color_greyscale;
746
    unsigned char *color_table;
747
    int j;
748
    unsigned char r, g, b;
749

    
750
    print_atom("stsd", atom);
751

    
752
    get_byte(pb); /* version */
753
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
754

    
755
    entries = get_be32(pb);
756

    
757
    while(entries--) { //Parsing Sample description table
758
        enum CodecID id;
759
        int size = get_be32(pb); /* size */
760
        format = get_le32(pb); /* data format */
761

    
762
        get_be32(pb); /* reserved */
763
        get_be16(pb); /* reserved */
764
        get_be16(pb); /* index */
765

    
766
        /* for MPEG4: set codec type by looking for it */
767
        id = codec_get_id(mov_video_tags, format);
768
        if (id >= 0) {
769
            AVCodec *codec;
770
            codec = avcodec_find_decoder(id);
771
            if (codec)
772
                st->codec.codec_type = codec->type;
773
        }
774
#ifdef DEBUG
775
        av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
776
               size,
777
               (format >> 0) & 0xff,
778
               (format >> 8) & 0xff,
779
               (format >> 16) & 0xff,
780
               (format >> 24) & 0xff,
781
               st->codec.codec_type);
782
#endif
783
        st->codec.codec_tag = format;
784
        if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
785
            MOV_atom_t a = { 0, 0, 0 };
786
            st->codec.codec_id = id;
787
            get_be16(pb); /* version */
788
            get_be16(pb); /* revision level */
789
            get_be32(pb); /* vendor */
790
            get_be32(pb); /* temporal quality */
791
            get_be32(pb); /* spacial quality */
792
            st->codec.width = get_be16(pb); /* width */
793
            st->codec.height = get_be16(pb); /* height */
794
#if 1
795
            if (st->codec.codec_id == CODEC_ID_MPEG4) {
796
                /* in some MPEG4 the width/height are not correct, so
797
                   we ignore this info */
798
                st->codec.width = 0;
799
                st->codec.height = 0;
800
            }
801
#endif
802
            get_be32(pb); /* horiz resolution */
803
            get_be32(pb); /* vert resolution */
804
            get_be32(pb); /* data size, always 0 */
805
            frames_per_sample = get_be16(pb); /* frames per samples */
806
#ifdef DEBUG
807
            av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
808
#endif
809
            get_buffer(pb, (uint8_t *)st->codec.codec_name, 32); /* codec name */
810

    
811
            st->codec.bits_per_sample = get_be16(pb); /* depth */
812
            st->codec.color_table_id = get_be16(pb); /* colortable id */
813

    
814
/*          These are set in mov_read_stts and might already be set!
815
            st->codec.frame_rate      = 25;
816
            st->codec.frame_rate_base = 1;
817
*/
818
            size -= (16+8*4+2+32+2*2);
819
#if 0
820
            while (size >= 8) {
821
                MOV_atom_t a;
822
                int64_t start_pos;
823

824
                a.size = get_be32(pb);
825
                a.type = get_le32(pb);
826
                size -= 8;
827
#ifdef DEBUG
828
                av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
829
                       (a.type >> 0) & 0xff,
830
                       (a.type >> 8) & 0xff,
831
                       (a.type >> 16) & 0xff,
832
                       (a.type >> 24) & 0xff,
833
                       a.size, size);
834
#endif
835
                start_pos = url_ftell(pb);
836

    
837
                switch(a.type) {
838
                case MKTAG('e', 's', 'd', 's'):
839
                    {
840
                        int tag, len;
841
                        /* Well, broken but suffisant for some MP4 streams */
842
                        get_be32(pb); /* version + flags */
843
                        len = mov_mp4_read_descr(pb, &tag);
844
                        if (tag == 0x03) {
845
                            /* MP4ESDescrTag */
846
                            get_be16(pb); /* ID */
847
                            get_byte(pb); /* priority */
848
                            len = mov_mp4_read_descr(pb, &tag);
849
                            if (tag != 0x04)
850
                                goto fail;
851
                            /* MP4DecConfigDescrTag */
852
                            get_byte(pb); /* objectTypeId */
853
                            get_be32(pb); /* streamType + buffer size */
854
                            get_be32(pb); /* max bit rate */
855
                            get_be32(pb); /* avg bit rate */
856
                            len = mov_mp4_read_descr(pb, &tag);
857
                            if (tag != 0x05)
858
                                goto fail;
859
                            /* MP4DecSpecificDescrTag */
860
#ifdef DEBUG
861
                            av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
862
#endif
863
                            sc->header_data = av_mallocz(len);
864
                            if (sc->header_data) {
865
                                get_buffer(pb, sc->header_data, len);
866
                                sc->header_len = len;
867
                            }
868
                        }
869
                        /* in any case, skip garbage */
870
                    }
871
                    break;
872
                default:
873
                    break;
874
                }
875
            fail:
876
                av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld   %d\n", atom.size, url_ftell(pb) - start_pos);
877
                if (atom.size > 8) {
878
                    url_fskip(pb, (atom.size - 8) -
879
                              ((url_ftell(pb) - start_pos)));
880
                    size -= atom.size - 8;
881
                }
882
            }
883
            if (size > 0) {
884
                /* unknown extension */
885
                url_fskip(pb, size);
886
            }
887
#else
888

    
889
            /* figure out the palette situation */
890
            color_depth = st->codec.bits_per_sample & 0x1F;
891
            color_greyscale = st->codec.bits_per_sample & 0x20;
892

    
893
            /* if the depth is 2, 4, or 8 bpp, file is palettized */
894
            if ((color_depth == 2) || (color_depth == 4) || 
895
                (color_depth == 8)) {
896

    
897
                if (color_greyscale) {
898

    
899
                    /* compute the greyscale palette */
900
                    color_count = 1 << color_depth;
901
                    color_index = 255;
902
                    color_dec = 256 / (color_count - 1);
903
                    for (j = 0; j < color_count; j++) {
904
                        r = g = b = color_index;
905
                        c->palette_control.palette[j] =
906
                            (r << 16) | (g << 8) | (b);
907
                        color_index -= color_dec;
908
                        if (color_index < 0)
909
                            color_index = 0;
910
                    }
911

    
912
                } else if (st->codec.color_table_id & 0x08) {
913

    
914
                    /* if flag bit 3 is set, use the default palette */
915
                    color_count = 1 << color_depth;
916
                    if (color_depth == 2)
917
                        color_table = ff_qt_default_palette_4;
918
                    else if (color_depth == 4)
919
                        color_table = ff_qt_default_palette_16;
920
                    else
921
                        color_table = ff_qt_default_palette_256;
922

    
923
                    for (j = 0; j < color_count; j++) {
924
                        r = color_table[j * 4 + 0];
925
                        g = color_table[j * 4 + 1];
926
                        b = color_table[j * 4 + 2];
927
                        c->palette_control.palette[j] =
928
                            (r << 16) | (g << 8) | (b);
929
                    }
930

    
931
                } else {
932

    
933
                    /* load the palette from the file */
934
                    color_start = get_be32(pb);
935
                    color_count = get_be16(pb);
936
                    color_end = get_be16(pb);
937
                    for (j = color_start; j <= color_end; j++) {
938
                        /* each R, G, or B component is 16 bits;
939
                         * only use the top 8 bits; skip alpha bytes
940
                         * up front */
941
                        get_byte(pb);
942
                        get_byte(pb);
943
                        r = get_byte(pb);
944
                        get_byte(pb);
945
                        g = get_byte(pb);
946
                        get_byte(pb);
947
                        b = get_byte(pb);
948
                        get_byte(pb);
949
                        c->palette_control.palette[j] =
950
                            (r << 16) | (g << 8) | (b);
951
                    }
952
                }
953

    
954
                st->codec.palctrl = &c->palette_control;
955
                st->codec.palctrl->palette_changed = 1;
956
            } else
957
                st->codec.palctrl = NULL;
958

    
959
            a.size = size;
960
            mov_read_default(c, pb, a);
961
#endif
962
        } else {
963
            st->codec.codec_id = codec_get_id(mov_audio_tags, format);
964
            if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
965
            {
966
#ifdef DEBUG
967
               av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
968
#endif
969
               get_be32(pb);get_be32(pb); //Reserved_8
970
               get_be16(pb);//Reserved_2
971
               get_be16(pb);//Reserved_2
972
               get_be32(pb);//Reserved_4
973
               get_be16(pb);//TimeScale
974
               get_be16(pb);//Reserved_2
975

    
976
                //AMRSpecificBox.(10 bytes)
977
               
978
               get_be32(pb); //size
979
               get_be32(pb); //type=='damr'
980
               get_be32(pb); //vendor
981
               get_byte(pb); //decoder version
982
               get_be16(pb); //mode_set
983
               get_byte(pb); //mode_change_period
984
               get_byte(pb); //frames_per_sample
985

    
986
               st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
987
               if(st->codec.codec_id==CODEC_ID_AMR_NB)
988
               {
989
                   st->codec.sample_rate=8000;
990
                   st->codec.channels=1;
991
               }
992
               else //AMR-WB
993
               {
994
                   st->codec.sample_rate=16000;
995
                   st->codec.channels=1;
996
               }
997
               st->codec.bits_per_sample=16;
998
               st->codec.bit_rate=0; /*It is not possible to tell this before we have 
999
                                       an audio frame and even then every frame can be different*/
1000
            }
1001
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
1002
            {
1003
                //This is some stuff for the hint track, lets ignore it!
1004
                //Do some mp4 auto detect.
1005
                c->mp4=1;
1006
                size-=(16);
1007
                url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
1008
            }
1009
            else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
1010
            {
1011
                /* Handle mp4 audio tag */
1012
                get_be32(pb); /* version */
1013
                get_be32(pb);
1014
                st->codec.channels = get_be16(pb); /* channels */
1015
                st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
1016
                get_be32(pb);
1017
                st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
1018
                get_be16(pb);
1019
                c->mp4=1;
1020
                {
1021
                MOV_atom_t a = { format, url_ftell(pb), size - (20 + 20 + 8) };
1022
                mov_read_default(c, pb, a);
1023
                }
1024
                /* Get correct sample rate from extradata */
1025
                if(st->codec.extradata_size) {
1026
                   const int samplerate_table[] = {
1027
                     96000, 88200, 64000, 48000, 44100, 32000, 
1028
                     24000, 22050, 16000, 12000, 11025, 8000,
1029
                     7350, 0, 0, 0
1030
                   };
1031
                   unsigned char *px = st->codec.extradata;
1032
                   // 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
1033
                   int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
1034
                   st->codec.sample_rate = samplerate_table[samplerate_index];
1035
                }
1036
            }
1037
            else if(size>=(16+20))
1038
            {//16 bytes read, reading atleast 20 more
1039
#ifdef DEBUG
1040
                av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
1041
#endif
1042
                uint16_t version = get_be16(pb); /* version */
1043
                get_be16(pb); /* revision level */
1044
                get_be32(pb); /* vendor */
1045

    
1046
                st->codec.channels = get_be16(pb);                /* channel count */
1047
                st->codec.bits_per_sample = get_be16(pb);        /* sample size */
1048

    
1049
                /* handle specific s8 codec */
1050
                get_be16(pb); /* compression id = 0*/
1051
                get_be16(pb); /* packet size = 0 */
1052

    
1053
                st->codec.sample_rate = ((get_be32(pb) >> 16));
1054
                //av_log(NULL, AV_LOG_DEBUG, "CODECID %d  %d  %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
1055

    
1056
                switch (st->codec.codec_id) {
1057
                case CODEC_ID_PCM_S16BE:
1058
                    if (st->codec.bits_per_sample == 8)
1059
                        st->codec.codec_id = CODEC_ID_PCM_S8;
1060
                    /* fall */
1061
                case CODEC_ID_PCM_U8:
1062
                    st->codec.bit_rate = st->codec.sample_rate * 8;
1063
                    break;
1064
                default:
1065
                    ;
1066
                }
1067

    
1068
                //Read QT version 1 fields. In version 0 theese dont exist
1069
#ifdef DEBUG
1070
                av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
1071
                av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
1072
#endif
1073
                if((version==1) && size>=(16+20+16))
1074
                {
1075
                    get_be32(pb); /* samples per packet */
1076
                    get_be32(pb); /* bytes per packet */
1077
                    get_be32(pb); /* bytes per frame */
1078
                    get_be32(pb); /* bytes per sample */
1079
                    if(size>(16+20+16))
1080
                    {
1081
                        //Optional, additional atom-based fields
1082
#ifdef DEBUG
1083
                        av_log(NULL, AV_LOG_DEBUG, "offest=0x%X, sizeleft=%d=0x%x,format=%c%c%c%c\n",(int)url_ftell(pb),size - (16 + 20 + 16 ),size - (16 + 20 + 16 ),
1084
                            (format >> 0) & 0xff,
1085
                            (format >> 8) & 0xff,
1086
                            (format >> 16) & 0xff,
1087
                            (format >> 24) & 0xff);
1088
#endif
1089
                        MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
1090
                        mov_read_default(c, pb, a);
1091
                    }
1092
                }
1093
                else
1094
                {
1095
                    //We should be down to 0 bytes here, but lets make sure.
1096
                    size-=(16+20);
1097
#ifdef DEBUG
1098
                    if(size>0)
1099
                        av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
1100
#endif
1101
                    url_fskip(pb, size);
1102
                }
1103
            }
1104
            else
1105
            {
1106
                size-=16;
1107
                //Unknown size, but lets do our best and skip the rest.
1108
#ifdef DEBUG
1109
                av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
1110
#endif
1111
                url_fskip(pb, size);
1112
            }
1113
        }
1114
    }
1115

    
1116
    return 0;
1117
}
1118

    
1119
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1120
{
1121
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1122
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1123
    int entries, i;
1124

    
1125
    print_atom("stsc", atom);
1126

    
1127
    get_byte(pb); /* version */
1128
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1129

    
1130
    entries = get_be32(pb);
1131
#ifdef DEBUG
1132
av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
1133
#endif
1134
    sc->sample_to_chunk_sz = entries;
1135
    sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
1136
    if (!sc->sample_to_chunk)
1137
        return -1;
1138
    for(i=0; i<entries; i++) {
1139
        sc->sample_to_chunk[i].first = get_be32(pb);
1140
        sc->sample_to_chunk[i].count = get_be32(pb);
1141
        sc->sample_to_chunk[i].id = get_be32(pb);
1142
#ifdef DEBUG
1143
/*        av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
1144
#endif
1145
    }
1146
    return 0;
1147
}
1148

    
1149
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1150
{
1151
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1152
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1153
    int entries, i;
1154

    
1155
    print_atom("stss", atom);
1156

    
1157
    get_byte(pb); /* version */
1158
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1159

    
1160
    entries = get_be32(pb);
1161
    sc->keyframe_count = entries;
1162
#ifdef DEBUG
1163
    av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
1164
#endif
1165
    sc->keyframes = (long*) av_malloc(entries * sizeof(long));
1166
    if (!sc->keyframes)
1167
        return -1;
1168
    for(i=0; i<entries; i++) {
1169
        sc->keyframes[i] = get_be32(pb);
1170
#ifdef DEBUG
1171
/*        av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
1172
#endif
1173
    }
1174
    return 0;
1175
}
1176

    
1177
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1178
{
1179
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1180
    MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1181
    int entries, i;
1182

    
1183
    print_atom("stsz", atom);
1184

    
1185
    get_byte(pb); /* version */
1186
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1187

    
1188
    sc->sample_size = get_be32(pb);
1189
    entries = get_be32(pb);
1190
    sc->sample_count = entries;
1191
#ifdef DEBUG
1192
    av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
1193
#endif
1194
    if(sc->sample_size)
1195
        return 0; /* there isn't any table following */
1196
    sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
1197
    if (!sc->sample_sizes)
1198
        return -1;
1199
    for(i=0; i<entries; i++) {
1200
        sc->sample_sizes[i] = get_be32(pb);
1201
#ifdef DEBUG
1202
/*        av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
1203
#endif
1204
    }
1205
    return 0;
1206
}
1207

    
1208
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1209
{
1210
    AVStream *st = c->fc->streams[c->fc->nb_streams-1];
1211
    //MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
1212
    int entries, i;
1213
    int64_t duration=0;
1214
    int64_t total_sample_count=0;
1215

    
1216
    print_atom("stts", atom);
1217

    
1218
    get_byte(pb); /* version */
1219
    get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1220
    entries = get_be32(pb);
1221

    
1222
    c->streams[c->fc->nb_streams-1]->stts_count = entries;
1223
    c->streams[c->fc->nb_streams-1]->stts_data = (uint64_t*) av_malloc(entries * sizeof(uint64_t));
1224

    
1225
#ifdef DEBUG
1226
av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
1227
#endif
1228
    for(i=0; i<entries; i++) {
1229
        int32_t sample_duration;
1230
        int32_t sample_count;
1231

    
1232
        sample_count=get_be32(pb);
1233
        sample_duration = get_be32(pb);
1234
        c->streams[c->fc->nb_streams - 1]->stts_data[i] = (uint64_t)sample_count<<32 | (uint64_t)sample_duration;
1235
#ifdef DEBUG
1236
        av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
1237
#endif
1238
        duration+=sample_duration*sample_count;
1239
        total_sample_count+=sample_count;
1240

    
1241
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
1242

1243
        if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
1244
            st->codec.frame_rate_base = sample_duration ? sample_duration : 1;
1245
            st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1246
#ifdef DEBUG
1247
            av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
1248
#endif
1249
        }
1250
#endif
1251
    }
1252

    
1253
    /*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
1254
    if(duration>0)
1255
    {
1256
        av_reduce(
1257
            &st->codec.frame_rate, 
1258
            &st->codec.frame_rate_base, 
1259
            c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
1260
            duration,
1261
            INT_MAX
1262
        );
1263

    
1264
#ifdef DEBUG
1265
        av_log(NULL, AV_LOG_DEBUG, "FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.frame_rate/st->codec.frame_rate_base,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
1266
#endif
1267
    }
1268
    else
1269
    {
1270
        st->codec.frame_rate_base = 1;
1271
        st->codec.frame_rate = c->streams[c->fc->nb_streams-1]->time_scale;
1272
    }
1273
    return 0;
1274
}
1275

    
1276
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1277
{
1278
    AVStream *st;
1279
    MOVStreamContext *sc;
1280

    
1281
    print_atom("trak", atom);
1282

    
1283
    st = av_new_stream(c->fc, c->fc->nb_streams);
1284
    if (!st) return -2;
1285
    sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
1286
    if (!sc) {
1287
        av_free(st);
1288
        return -1;
1289
    }
1290

    
1291
    sc->sample_to_chunk_index = -1;
1292
    st->priv_data = sc;
1293
    st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
1294
    st->start_time = 0; /* XXX: check */
1295
    st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
1296
    c->streams[c->fc->nb_streams-1] = sc;
1297

    
1298
    return mov_read_default(c, pb, atom);
1299
}
1300

    
1301
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1302
{
1303
    AVStream *st;
1304

    
1305
    print_atom("tkhd", atom);
1306

    
1307
    st = c->fc->streams[c->fc->nb_streams-1];
1308

    
1309
    get_byte(pb); /* version */
1310

    
1311
    get_byte(pb); get_byte(pb);
1312
    get_byte(pb); /* flags */
1313
    /*
1314
    MOV_TRACK_ENABLED 0x0001
1315
    MOV_TRACK_IN_MOVIE 0x0002
1316
    MOV_TRACK_IN_PREVIEW 0x0004
1317
    MOV_TRACK_IN_POSTER 0x0008
1318
    */
1319

    
1320
    get_be32(pb); /* creation time */
1321
    get_be32(pb); /* modification time */
1322
    st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
1323
    get_be32(pb); /* reserved */
1324
    st->start_time = 0; /* check */
1325
    st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
1326
    get_be32(pb); /* reserved */
1327
    get_be32(pb); /* reserved */
1328

    
1329
    get_be16(pb); /* layer */
1330
    get_be16(pb); /* alternate group */
1331
    get_be16(pb); /* volume */
1332
    get_be16(pb); /* reserved */
1333

    
1334
    url_fskip(pb, 36); /* display matrix */
1335

    
1336
    /* those are fixed-point */
1337
    st->codec.width = get_be32(pb) >> 16; /* track width */
1338
    st->codec.height = get_be32(pb) >> 16; /* track height */
1339

    
1340
    return 0;
1341
}
1342

    
1343
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
1344
/* like the files created with Adobe Premiere 5.0, for samples see */
1345
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
1346
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1347
{
1348
    int err;
1349

    
1350
#ifdef DEBUG
1351
    print_atom("wide", atom);
1352
    debug_indent++;
1353
#endif
1354
    if (atom.size < 8)
1355
        return 0; /* continue */
1356
    if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
1357
        url_fskip(pb, atom.size - 4);
1358
        return 0;
1359
    }
1360
    atom.type = get_le32(pb);
1361
    atom.offset += 8;
1362
    atom.size -= 8;
1363
    if (atom.type != MKTAG('m', 'd', 'a', 't')) {
1364
        url_fskip(pb, atom.size);
1365
        return 0;
1366
    }
1367
    err = mov_read_mdat(c, pb, atom);
1368
#ifdef DEBUG
1369
    debug_indent--;
1370
#endif
1371
    return err;
1372
}
1373

    
1374

    
1375
#ifdef CONFIG_ZLIB
1376
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
1377
{
1378
    return -1;
1379
}
1380

    
1381
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1382
{
1383
    ByteIOContext ctx;
1384
    uint8_t *cmov_data;
1385
    uint8_t *moov_data; /* uncompressed data */
1386
    long cmov_len, moov_len;
1387
    int ret;
1388

    
1389
    print_atom("cmov", atom);
1390

    
1391
    get_be32(pb); /* dcom atom */
1392
    if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
1393
        return -1;
1394
    if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
1395
        av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
1396
        return -1;
1397
    }
1398
    get_be32(pb); /* cmvd atom */
1399
    if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
1400
        return -1;
1401
    moov_len = get_be32(pb); /* uncompressed size */
1402
    cmov_len = atom.size - 6 * 4;
1403

    
1404
    cmov_data = (uint8_t *) av_malloc(cmov_len);
1405
    if (!cmov_data)
1406
        return -1;
1407
    moov_data = (uint8_t *) av_malloc(moov_len);
1408
    if (!moov_data) {
1409
        av_free(cmov_data);
1410
        return -1;
1411
    }
1412
    get_buffer(pb, cmov_data, cmov_len);
1413
    if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
1414
        return -1;
1415
    if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
1416
        return -1;
1417
    ctx.buf_end = ctx.buffer + moov_len;
1418
    atom.type = MKTAG( 'm', 'o', 'o', 'v' );
1419
    atom.offset = 0;
1420
    atom.size = moov_len;
1421
#ifdef DEBUG
1422
    { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
1423
#endif
1424
    ret = mov_read_default(c, &ctx, atom);
1425
    av_free(moov_data);
1426
    av_free(cmov_data);
1427

    
1428
    return ret;
1429
}
1430
#endif
1431

    
1432
/* edit list atom */
1433
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
1434
{
1435
  int i, edit_count;
1436
  print_atom("elst", atom);
1437

    
1438
  get_byte(pb); /* version */
1439
  get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
1440
  edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb);     /* entries */
1441
  
1442
  for(i=0; i<edit_count; i++){
1443
    get_be32(pb); /* Track duration */
1444
    get_be32(pb); /* Media time */
1445
    get_be32(pb); /* Media rate */
1446
  }
1447
#ifdef DEBUG
1448
  av_log(NULL, AV_LOG_DEBUG, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
1449
#endif
1450
  return 0;
1451
}
1452

    
1453
static const MOVParseTableEntry mov_default_parse_table[] = {
1454
/* mp4 atoms */
1455
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
1456
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
1457
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
1458
{ MKTAG( 'c', 't', 't', 's' ), mov_read_leaf }, /* composition time to sample */
1459
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
1460
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
1461
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
1462
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
1463
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
1464
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
1465
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
1466
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
1467
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
1468
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
1469
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
1470
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
1471
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
1472
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
1473
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
1474
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
1475
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
1476
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
1477
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
1478
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
1479
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
1480
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
1481
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
1482
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
1483
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
1484
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorrenson extension ??? */
1485
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
1486
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
1487
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
1488
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
1489
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
1490
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
1491
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
1492
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
1493
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
1494
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
1495
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
1496
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
1497
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
1498
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
1499
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
1500
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_default },
1501
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
1502
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
1503
/* extra mp4 */
1504
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
1505
/* QT atoms */
1506
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
1507
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
1508
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
1509
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
1510
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
1511
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
1512
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
1513
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
1514
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
1515
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
1516
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
1517
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
1518
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
1519
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
1520
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
1521
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
1522
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
1523
#ifdef CONFIG_ZLIB
1524
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
1525
#else
1526
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
1527
#endif
1528
{ 0L, mov_read_leaf }
1529
};
1530

    
1531
static void mov_free_stream_context(MOVStreamContext *sc)
1532
{
1533
    if(sc) {
1534
        av_free(sc->chunk_offsets);
1535
        av_free(sc->sample_to_chunk);
1536
        av_free(sc->sample_sizes);
1537
        av_free(sc->keyframes);
1538
        av_free(sc->header_data);
1539
        av_free(sc->stts_data);        
1540
        av_free(sc);
1541
    }
1542
}
1543

    
1544
static inline uint32_t mov_to_tag(uint8_t *buf)
1545
{
1546
    return MKTAG(buf[0], buf[1], buf[2], buf[3]);
1547
}
1548

    
1549
static inline uint32_t to_be32(uint8_t *buf)
1550
{
1551
    return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
1552
}
1553

    
1554
/* XXX: is it sufficient ? */
1555
static int mov_probe(AVProbeData *p)
1556
{
1557
    unsigned int offset;
1558
    uint32_t tag;
1559

    
1560
    /* check file header */
1561
    if (p->buf_size <= 12)
1562
        return 0;
1563
    offset = 0;
1564
    for(;;) {
1565
        /* ignore invalid offset */
1566
        if ((offset + 8) > (unsigned int)p->buf_size)
1567
            return 0;
1568
        tag = mov_to_tag(p->buf + offset + 4);
1569
        switch(tag) {
1570
        case MKTAG( 'm', 'o', 'o', 'v' ):
1571
        case MKTAG( 'w', 'i', 'd', 'e' ):
1572
        case MKTAG( 'f', 'r', 'e', 'e' ):
1573
        case MKTAG( 'm', 'd', 'a', 't' ):
1574
        case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
1575
        case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
1576
            return AVPROBE_SCORE_MAX;
1577
        case MKTAG( 'f', 't', 'y', 'p' ):
1578
        case MKTAG( 's', 'k', 'i', 'p' ):
1579
            offset = to_be32(p->buf+offset) + offset;
1580
            break;
1581
        default:
1582
            /* unrecognized tag */
1583
            return 0;
1584
        }
1585
    }
1586
    return 0;
1587
}
1588

    
1589
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
1590
{
1591
    MOVContext *mov = (MOVContext *) s->priv_data;
1592
    ByteIOContext *pb = &s->pb;
1593
    int i, j, nb, err;
1594
    MOV_atom_t atom = { 0, 0, 0 };
1595

    
1596
    mov->fc = s;
1597
    mov->parse_table = mov_default_parse_table;
1598
#if 0
1599
    /* XXX: I think we should auto detect */
1600
    if(s->iformat->name[1] == 'p')
1601
        mov->mp4 = 1;
1602
#endif
1603
    if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
1604
        atom.size = url_filesize(url_fileno(pb));
1605
    else
1606
        atom.size = 0x7FFFFFFFFFFFFFFFLL;
1607

    
1608
#ifdef DEBUG
1609
    av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
1610
#endif
1611

    
1612
    /* check MOV header */
1613
    err = mov_read_default(mov, pb, atom);
1614
    if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
1615
        av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
1616
                err, mov->found_moov, mov->found_mdat, url_ftell(pb));
1617
        return -1;
1618
    }
1619
#ifdef DEBUG
1620
    av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
1621
#endif
1622
    /* some cleanup : make sure we are on the mdat atom */
1623
    if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
1624
        url_fseek(pb, mov->mdat_offset, SEEK_SET);
1625

    
1626
    mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
1627

    
1628
#ifdef DEBUG
1629
    av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
1630
#endif
1631

    
1632
#ifdef DEBUG
1633
    av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
1634
#endif
1635
    mov->total_streams = nb = s->nb_streams;
1636

    
1637
#if 1
1638
    for(i=0; i<s->nb_streams;) {
1639
        if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
1640
            av_free(s->streams[i]);
1641
            for(j=i+1; j<s->nb_streams; j++)
1642
                s->streams[j-1] = s->streams[j];
1643
            s->nb_streams--;
1644
        } else
1645
            i++;
1646
    }
1647
    for(i=0; i<s->nb_streams;i++) {
1648
        MOVStreamContext *sc;
1649
        sc = (MOVStreamContext *)s->streams[i]->priv_data;
1650
        sc->ffindex = i;
1651
        sc->is_ff_stream = 1;
1652
    }
1653
#endif
1654
#ifdef DEBUG
1655
    av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
1656
#endif
1657
    return 0;
1658
}
1659

    
1660
/* Yes, this is ugly... I didn't write the specs of QT :p */
1661
/* XXX:remove useless commented code sometime */
1662
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
1663
{
1664
    MOVContext *mov = (MOVContext *) s->priv_data;
1665
    MOVStreamContext *sc;
1666
    int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
1667
    int i, a, b, m;
1668
    int size;
1669
    size = 0x0FFFFFFF;
1670

    
1671
#ifdef MOV_SPLIT_CHUNKS
1672
    if (mov->partial) {
1673

    
1674
        int idx;
1675

    
1676
        sc = mov->partial;
1677
        idx = sc->sample_to_chunk_index;
1678

    
1679
        if (idx < 0) return 0;
1680
        size = sc->sample_sizes[sc->current_sample];
1681

    
1682
        sc->current_sample++;
1683
        sc->left_in_chunk--;
1684

    
1685
        if (sc->left_in_chunk <= 0)
1686
            mov->partial = 0;
1687
        offset = mov->next_chunk_offset;
1688
        /* extract the sample */
1689

    
1690
        goto readchunk;
1691
    }
1692
#endif
1693

    
1694
again:
1695
    sc = 0;
1696
    for(i=0; i<mov->total_streams; i++) {
1697
        MOVStreamContext *msc = mov->streams[i];
1698
        //av_log(NULL, AV_LOG_DEBUG, "MOCHUNK %ld  %d   %p  pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
1699
        if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
1700
           && (msc->chunk_offsets[msc->next_chunk] < offset)) {
1701
            sc = msc;
1702
            offset = msc->chunk_offsets[msc->next_chunk];
1703
            //av_log(NULL, AV_LOG_DEBUG, "SELETED  %Ld  i:%d\n", offset, i);
1704
        }
1705
    }
1706
    if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
1707
        return -1;
1708

    
1709
    sc->next_chunk++;
1710

    
1711
    if(mov->next_chunk_offset < offset) { /* some meta data */
1712
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1713
        mov->next_chunk_offset = offset;
1714
    }
1715

    
1716
//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
1717
    if(!sc->is_ff_stream) {
1718
        url_fskip(&s->pb, (offset - mov->next_chunk_offset));
1719
        mov->next_chunk_offset = offset;
1720
        offset = 0x0FFFFFFFFFFFFFFFLL;
1721
        goto again;
1722
    }
1723

    
1724
    /* now get the chunk size... */
1725

    
1726
    for(i=0; i<mov->total_streams; i++) {
1727
        MOVStreamContext *msc = mov->streams[i];
1728
        if ((msc->next_chunk < msc->chunk_count)
1729
            && ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
1730
            size = msc->chunk_offsets[msc->next_chunk] - offset;
1731
    }
1732

    
1733
#ifdef MOV_MINOLTA_FIX
1734
    //Make sure that size is according to sample_size (Needed by .mov files 
1735
    //created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
1736
    //Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
1737
    //but I have no such movies
1738
    if (sc->sample_size > 0) { 
1739
        int foundsize=0;
1740
        for(i=0; i<(sc->sample_to_chunk_sz); i++) {
1741
            if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) && (sc->sample_size>0) )
1742
            {
1743
                // I can't figure out why for PCM audio sample_size is always 1
1744
                // (it should actually be channels*bits_per_second/8) but it is.
1745
                AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
1746
                if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
1747
                    foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
1748
                else
1749
                    foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
1750
            }
1751
#ifdef DEBUG
1752
            /*av_log(NULL, AV_LOG_DEBUG, "sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id);*/
1753
#endif
1754
        }
1755
        if( (foundsize>0) && (foundsize<size) )
1756
        {
1757
#ifdef DEBUG
1758
            /*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
1759
#endif
1760
            size=foundsize;
1761
        }
1762
    }
1763
#endif //MOV_MINOLTA_FIX
1764

    
1765
#ifdef MOV_SPLIT_CHUNKS
1766
    /* split chunks into samples */
1767
    if (sc->sample_size == 0) {
1768
        int idx = sc->sample_to_chunk_index;
1769
        if ((idx + 1 < sc->sample_to_chunk_sz)
1770
            && (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
1771
           idx++;
1772
        sc->sample_to_chunk_index = idx;
1773
        if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
1774
            mov->partial = sc;
1775
            /* we'll have to get those samples before next chunk */
1776
            sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
1777
            size = sc->sample_sizes[sc->current_sample];
1778
        }
1779

    
1780
        sc->current_sample++;
1781
    }
1782
#endif
1783

    
1784
readchunk:
1785
//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
1786
    if(size == 0x0FFFFFFF)
1787
        size = mov->mdat_size + mov->mdat_offset - offset;
1788
    if(size < 0)
1789
        return -1;
1790
    if(size == 0)
1791
        return -1;
1792
    url_fseek(&s->pb, offset, SEEK_SET);
1793

    
1794
    //av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d  %d off: %Ld   pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
1795
    if (sc->header_len > 0) {
1796
        av_new_packet(pkt, size + sc->header_len);
1797
        memcpy(pkt->data, sc->header_data, sc->header_len);
1798
        get_buffer(&s->pb, pkt->data + sc->header_len, size);
1799
        /* free header */
1800
        av_freep(&sc->header_data);
1801
        sc->header_len = 0;
1802
    } else {
1803
        av_new_packet(pkt, size);
1804
        get_buffer(&s->pb, pkt->data, pkt->size);
1805
    }
1806
    pkt->stream_index = sc->ffindex;
1807
    
1808
    // If the keyframes table exists, mark any samples that are in the table as key frames.
1809
    // If no table exists, treat very sample as a key frame.
1810
    if (sc->keyframes) {        
1811
        a = 0;
1812
        b = sc->keyframe_count - 1;
1813
        
1814
        while (a < b) {
1815
            m = (a + b + 1) >> 1;
1816
            if (sc->keyframes[m] > sc->current_sample) {
1817
                b = m - 1;
1818
            } else {
1819
                a = m;
1820
            }    
1821
        }
1822
        
1823
        if (sc->keyframes[a] == sc->current_sample)
1824
            pkt->flags |= PKT_FLAG_KEY;
1825
    }
1826
    else
1827
        pkt->flags |= PKT_FLAG_KEY;
1828

    
1829
#ifdef DEBUG
1830
/*
1831
    av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
1832
    for(i=0; i<8; i++)
1833
        av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
1834
    for(i=0; i<8; i++)
1835
        av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
1836
    puts("");
1837
*/
1838
#endif
1839

    
1840
    mov->next_chunk_offset = offset + size;
1841

    
1842
    return 0;
1843
}
1844

    
1845
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
1846
/**
1847
 * Seek method based on the one described in the Appendix C of QTFileFormat.pdf
1848
 */
1849
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp)
1850
{
1851
    MOVContext* mov = (MOVContext *) s->priv_data;
1852
    MOVStreamContext* sc;
1853
    int32_t i, a, b, m;
1854
    int64_t sample_time;
1855
    int64_t start_time;
1856
    int32_t seek_sample, sample;
1857
    int32_t duration;
1858
    int32_t count;
1859
    int32_t chunk;
1860
    int32_t left_in_chunk;
1861
    int64_t chunk_file_offset;
1862
    int64_t sample_file_offset;
1863
    int32_t first_chunk_sample;
1864
    int32_t sample_to_chunk_idx;
1865
    int mov_idx;
1866

    
1867
    // Find the corresponding mov stream
1868
    for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
1869
        if (mov->streams[mov_idx]->ffindex == stream_index)
1870
            break;
1871
    if (mov_idx == mov->total_streams) {
1872
        av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
1873
        return -1;
1874
    }
1875
    sc = mov->streams[mov_idx];
1876

    
1877
    // Step 1. Find the edit that contains the requested time (elst)
1878
    if (sc->edit_count) {
1879
        // FIXME should handle edit list
1880
        av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
1881
        return -1;
1882
    }
1883

    
1884
    // Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
1885
#ifdef DEBUG
1886
  av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
1887
#endif
1888
    // convert timestamp from time_base unit to timescale unit
1889
    sample_time = av_rescale( timestamp,
1890
                            (int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
1891
                            (int64_t)s->streams[stream_index]->time_base.den);
1892
    start_time = 0; // FIXME use elst atom
1893
    sample = 1; // sample are 0 based in table
1894
#ifdef DEBUG
1895
    av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
1896
#endif
1897
    for (i = 0; i < sc->stts_count; i++) {
1898
        count = (uint32_t)(sc->stts_data[i]>>32);
1899
        duration = (uint32_t)(sc->stts_data[i]&0xffff);
1900
//av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);                
1901
//av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);        
1902
        if ((start_time + count*duration) > sample_time) {
1903
            sample += (sample_time - start_time) / duration;
1904
            break;
1905
        }
1906
        sample += count;
1907
        start_time += count * duration;
1908
    }   
1909
    /* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
1910
       is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
1911

    
1912
#ifdef DEBUG
1913
    av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
1914
#endif
1915
    if (sample > sc->sample_count) {
1916
        av_log(s, AV_LOG_ERROR, "mov: sample pos is too high, unable to seek (req. sample=%i, sample count=%ld)\n", sample, sc->sample_count);
1917
        return -1;
1918
    }
1919

    
1920
    // Step 3. Find the prior sync. sample using the Sync sample atom (stss)
1921
    if (sc->keyframes) {
1922
        a = 0;
1923
        b = sc->keyframe_count - 1;
1924
        while (a < b) {
1925
            m = (a + b + 1) >> 1;
1926
            if (sc->keyframes[m] > sample) {
1927
                b = m - 1;
1928
            } else {
1929
                a = m;
1930
            }
1931
#ifdef DEBUG
1932
         // av_log(s, AV_LOG_DEBUG, "a=%i (%i) b=%i (%i) m=%i (%i) stream #%i\n", a, sc->keyframes[a], b, sc->keyframes[b], m, sc->keyframes[m], mov_idx);
1933
#endif
1934
        }
1935
        seek_sample = sc->keyframes[a];
1936
    }
1937
    else
1938
        seek_sample = sample; // else all samples are key frames
1939
#ifdef DEBUG
1940
    av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
1941
#endif
1942

    
1943
    // Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
1944
    for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
1945
        b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
1946
        if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
1947
            break;
1948
        first_chunk_sample += b;
1949
    }
1950
    chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
1951
    left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
1952
    first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
1953
    sample_to_chunk_idx = i;
1954
#ifdef DEBUG
1955
    av_log(s, AV_LOG_DEBUG, "Sample was found in chunk #%i at sample offset %i (idx %i)\n", chunk, seek_sample - first_chunk_sample, sample_to_chunk_idx);
1956
#endif
1957

    
1958
    // Step 5. Find the offset of the chunk using the chunk offset atom
1959
    if (!sc->chunk_offsets) {
1960
        av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
1961
        return -1;
1962
    }
1963
    if (chunk > sc->chunk_count) {
1964
        av_log(s, AV_LOG_ERROR, "mov: chunk offset atom too short, unable to seek (req. chunk=%i, chunk count=%li)\n", chunk, sc->chunk_count);
1965
        return -1;
1966
    }
1967
    chunk_file_offset = sc->chunk_offsets[chunk - 1];
1968
#ifdef DEBUG
1969
    av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
1970
#endif
1971

    
1972
    // Step 6. Find the byte offset within the chunk using the sample size atom
1973
    sample_file_offset = chunk_file_offset;
1974
    if (sc->sample_size)
1975
        sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
1976
    else {
1977
        for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
1978
        sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
1979
        }
1980
    }
1981
#ifdef DEBUG
1982
    av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
1983
#endif
1984

    
1985
    // Step 6. Update the parser
1986
    mov->partial = sc;
1987
    mov->next_chunk_offset = sample_file_offset;
1988
    // Update current stream state
1989
    sc->current_sample = seek_sample - 1;  // zero based
1990
    sc->left_in_chunk = left_in_chunk;
1991
    sc->next_chunk = chunk; // +1 -1 (zero based)
1992
    sc->sample_to_chunk_index = sample_to_chunk_idx;
1993

    
1994
    // Update other streams    
1995
    for (i = 0; i<mov->total_streams; i++) {
1996
        MOVStreamContext *msc;
1997
        if (i == mov_idx) continue;
1998
        // Find the nearest 'next' chunk
1999
        msc = mov->streams[i];
2000
        a = 0;
2001
        b = msc->chunk_count - 1;
2002
        while (a < b) {
2003
            m = (a + b + 1) >> 1;
2004
            if (msc->chunk_offsets[m] > chunk_file_offset) {
2005
                b = m - 1;
2006
            } else {
2007
                a = m;
2008
            }
2009
#ifdef DEBUG            
2010
/*            av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
2011
            , a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m],  i); */
2012
#endif                  
2013
        }
2014
        msc->next_chunk = a;
2015
        if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
2016
            msc->next_chunk ++;
2017
#ifdef DEBUG        
2018
        av_log(s, AV_LOG_DEBUG, "Nearest next chunk for stream #%i is #%i @%lli\n", i, msc->next_chunk+1, msc->chunk_offsets[msc->next_chunk]);
2019
#endif        
2020
        // Compute sample count and index in the sample_to_chunk table (what a pity)
2021
        msc->sample_to_chunk_index = 0;
2022
        msc->current_sample = 0;
2023
        for(;  msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
2024
            && msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
2025
            msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
2026
            * msc->sample_to_chunk[msc->sample_to_chunk_index].count;
2027
        }
2028
        msc->current_sample += (msc->next_chunk - (msc->sample_to_chunk[msc->sample_to_chunk_index].first - 1)) * sc->sample_to_chunk[msc->sample_to_chunk_index].count;
2029
        msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
2030
#ifdef DEBUG        
2031
        av_log(s, AV_LOG_DEBUG, "Next Sample for stream #%i is #%i @%i\n", i, msc->current_sample + 1, msc->sample_to_chunk_index + 1);
2032
#endif        
2033
    }                
2034
    return 0;
2035
}
2036
#endif
2037

    
2038
static int mov_read_close(AVFormatContext *s)
2039
{
2040
    int i;
2041
    MOVContext *mov = (MOVContext *) s->priv_data;
2042
    for(i=0; i<mov->total_streams; i++)
2043
        mov_free_stream_context(mov->streams[i]);
2044
    /* free color tabs */
2045
    for(i=0; i<mov->ctab_size; i++)
2046
        av_freep(&mov->ctab[i]);
2047
    av_freep(&mov->ctab);
2048
    return 0;
2049
}
2050

    
2051
static AVInputFormat mov_iformat = {
2052
    "mov,mp4,m4a,3gp",
2053
    "QuickTime/MPEG4 format",
2054
    sizeof(MOVContext),
2055
    mov_probe,
2056
    mov_read_header,
2057
    mov_read_packet,
2058
    mov_read_close,
2059
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
2060
    mov_read_seek,
2061
#endif    
2062
};
2063

    
2064
int mov_init(void)
2065
{
2066
    av_register_input_format(&mov_iformat);
2067
    return 0;
2068
}