2292 lines
79 KiB
C
2292 lines
79 KiB
C
/*
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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_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
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/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
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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_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
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{ CODEC_ID_NONE, 0 },
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};
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static const CodecTag mov_audio_tags[] = {
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/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
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{ CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
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/* { CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') },*/ /* 8 bits */
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{ CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
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{ CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
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{ CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
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{ CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
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{ CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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{ CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
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{ CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
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{ CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
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{ CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
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{ CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
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/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/* MP4 tags */
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{ CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
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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_ALAC,MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
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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
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*/
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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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typedef struct {
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uint8_t version;
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uint32_t flags; // 24bit
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/* 0x03 ESDescrTag */
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uint16_t es_id;
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#define MP4ODescrTag 0x01
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#define MP4IODescrTag 0x02
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#define MP4ESDescrTag 0x03
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#define MP4DecConfigDescrTag 0x04
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#define MP4DecSpecificDescrTag 0x05
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#define MP4SLConfigDescrTag 0x06
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#define MP4ContentIdDescrTag 0x07
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#define MP4SupplContentIdDescrTag 0x08
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#define MP4IPIPtrDescrTag 0x09
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#define MP4IPMPPtrDescrTag 0x0A
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#define MP4IPMPDescrTag 0x0B
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#define MP4RegistrationDescrTag 0x0D
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#define MP4ESIDIncDescrTag 0x0E
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#define MP4ESIDRefDescrTag 0x0F
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#define MP4FileIODescrTag 0x10
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#define MP4FileODescrTag 0x11
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#define MP4ExtProfileLevelDescrTag 0x13
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#define MP4ExtDescrTagsStart 0x80
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#define MP4ExtDescrTagsEnd 0xFE
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uint8_t stream_priority;
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/* 0x04 DecConfigDescrTag */
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uint8_t object_type_id;
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uint8_t stream_type;
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/* XXX: really streamType is
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* only 6bit, followed by:
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* 1bit upStream
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* 1bit reserved
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*/
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uint32_t buffer_size_db; // 24
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uint32_t max_bitrate;
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uint32_t avg_bitrate;
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/* 0x05 DecSpecificDescrTag */
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uint8_t decoder_cfg_len;
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uint8_t *decoder_cfg;
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/* 0x06 SLConfigDescrTag */
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uint8_t sl_config_len;
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uint8_t *sl_config;
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} MOV_esds_t;
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struct MOVParseTableEntry;
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typedef struct Time2Sample{
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int count;
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int duration;
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}Time2Sample;
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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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int stts_count;
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Time2Sample *stts_data;
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int ctts_count;
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Time2Sample *ctts_data;
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int edit_count; /* number of 'edit' (elst atom) */
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long sample_to_chunk_sz;
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MOV_sample_to_chunk_tbl *sample_to_chunk;
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long sample_to_chunk_index;
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int sample_to_time_index;
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long sample_to_time_sample;
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uint64_t sample_to_time_time;
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int sample_to_ctime_index;
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int sample_to_ctime_sample;
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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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unsigned 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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typedef struct MOVContext {
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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;
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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
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*/
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MOVStreamContext *streams[MAX_STREAMS];
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int64_t next_chunk_offset;
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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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AVPaletteControl palette_control;
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} MOVContext;
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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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*/
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typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
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/* links atom IDs to parse functions */
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typedef struct MOVParseTableEntry {
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uint32_t type;
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mov_parse_function func;
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} MOVParseTableEntry;
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#ifdef DEBUG
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/*
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* XXX: static sux, even more in a multithreaded environment...
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* Avoid them. This is here just to help debugging.
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*/
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static int debug_indent = 0;
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void print_atom(const char *str, MOV_atom_t atom)
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{
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unsigned int tag, i;
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tag = (unsigned int) atom.type;
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i=debug_indent;
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if(tag == 0) tag = MKTAG('N', 'U', 'L', 'L');
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while(i--)
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av_log(NULL, AV_LOG_DEBUG, "|");
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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,
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(tag >> 16) & 0xff,
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(tag >> 24) & 0xff,
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(unsigned int)atom.offset,
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(unsigned int)atom.size);
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assert((unsigned int)atom.size < 0x7fffffff);// catching errors
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}
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#else
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#define print_atom(a,b)
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#endif
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static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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print_atom("leaf", atom);
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if (atom.size>1)
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url_fskip(pb, atom.size);
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/* url_seek(pb, atom_offset+atom.size, SEEK_SET); */
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return 0;
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}
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static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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int64_t total_size = 0;
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MOV_atom_t a;
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int i;
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int err = 0;
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#ifdef DEBUG
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print_atom("default", atom);
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debug_indent++;
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#endif
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a.offset = atom.offset;
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if (atom.size < 0)
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atom.size = 0x7fffffffffffffffLL;
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while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
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a.size = atom.size;
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a.type=0L;
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if(atom.size >= 8) {
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a.size = get_be32(pb);
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a.type = get_le32(pb);
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}
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total_size += 8;
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a.offset += 8;
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//av_log(NULL, AV_LOG_DEBUG, "type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom.size, total_size);
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if (a.size == 1) { /* 64 bit extended size */
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a.size = get_be64(pb) - 8;
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a.offset += 8;
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total_size += 8;
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}
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if (a.size == 0) {
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a.size = atom.size - total_size;
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if (a.size <= 8)
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break;
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}
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for (i = 0; c->parse_table[i].type != 0L
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&& c->parse_table[i].type != a.type; i++)
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/* empty */;
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a.size -= 8;
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if(a.size < 0)
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break;
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// av_log(NULL, AV_LOG_DEBUG, " i=%ld\n", i);
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if (c->parse_table[i].type == 0) { /* skip leaf atoms data */
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// url_seek(pb, atom.offset+atom.size, SEEK_SET);
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#ifdef DEBUG
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print_atom("unknown", a);
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#endif
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url_fskip(pb, a.size);
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} else {
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#ifdef DEBUG
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//char b[5] = { type & 0xff, (type >> 8) & 0xff, (type >> 16) & 0xff, (type >> 24) & 0xff, 0 };
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//print_atom(b, type, offset, size);
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#endif
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err = (c->parse_table[i].func)(c, pb, a);
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}
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a.offset += a.size;
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total_size += a.size;
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}
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if (!err && total_size < atom.size && atom.size < 0x7ffff) {
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//av_log(NULL, AV_LOG_DEBUG, "RESET %Ld %Ld err:%d\n", atom.size, total_size, err);
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url_fskip(pb, atom.size - total_size);
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}
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#ifdef DEBUG
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debug_indent--;
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#endif
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return err;
|
|
}
|
|
|
|
static int mov_read_ctab(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
#if 1
|
|
url_fskip(pb, atom.size); // for now
|
|
#else
|
|
VERY VERY BROKEN, NEVER execute this, needs rewrite
|
|
unsigned int len;
|
|
MOV_ctab_t *t;
|
|
c->ctab = av_realloc(c->ctab, ++c->ctab_size);
|
|
t = c->ctab[c->ctab_size];
|
|
t->seed = get_be32(pb);
|
|
t->flags = get_be16(pb);
|
|
t->size = get_be16(pb) + 1;
|
|
len = 2 * t->size * 4;
|
|
if (len > 0) {
|
|
t->clrs = av_malloc(len); // 16bit A R G B
|
|
if (t->clrs)
|
|
get_buffer(pb, t->clrs, len);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
int len = 0;
|
|
uint32_t type;
|
|
uint32_t ctype;
|
|
|
|
print_atom("hdlr", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
/* component type */
|
|
ctype = get_le32(pb);
|
|
type = get_le32(pb); /* component subtype */
|
|
|
|
#ifdef DEBUG
|
|
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);
|
|
av_log(NULL, AV_LOG_DEBUG, "stype= %c%c%c%c\n", *((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
|
|
#endif
|
|
#ifdef DEBUG
|
|
/* XXX: yeah this is ugly... */
|
|
if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
|
|
if(type == MKTAG('v', 'i', 'd', 'e'))
|
|
puts("hdlr: vide");
|
|
else if(type == MKTAG('s', 'o', 'u', 'n'))
|
|
puts("hdlr: soun");
|
|
} else if(ctype == 0) { /* MP4 */
|
|
if(type == MKTAG('v', 'i', 'd', 'e'))
|
|
puts("hdlr: vide");
|
|
else if(type == MKTAG('s', 'o', 'u', 'n'))
|
|
puts("hdlr: soun");
|
|
else if(type == MKTAG('o', 'd', 's', 'm'))
|
|
puts("hdlr: odsm");
|
|
else if(type == MKTAG('s', 'd', 's', 'm'))
|
|
puts("hdlr: sdsm");
|
|
} else puts("hdlr: meta");
|
|
#endif
|
|
|
|
if(ctype == MKTAG('m', 'h', 'l', 'r')) { /* MOV */
|
|
/* helps parsing the string hereafter... */
|
|
c->mp4 = 0;
|
|
if(type == MKTAG('v', 'i', 'd', 'e'))
|
|
st->codec.codec_type = CODEC_TYPE_VIDEO;
|
|
else if(type == MKTAG('s', 'o', 'u', 'n'))
|
|
st->codec.codec_type = CODEC_TYPE_AUDIO;
|
|
} else if(ctype == 0) { /* MP4 */
|
|
/* helps parsing the string hereafter... */
|
|
c->mp4 = 1;
|
|
if(type == MKTAG('v', 'i', 'd', 'e'))
|
|
st->codec.codec_type = CODEC_TYPE_VIDEO;
|
|
else if(type == MKTAG('s', 'o', 'u', 'n'))
|
|
st->codec.codec_type = CODEC_TYPE_AUDIO;
|
|
}
|
|
get_be32(pb); /* component manufacture */
|
|
get_be32(pb); /* component flags */
|
|
get_be32(pb); /* component flags mask */
|
|
|
|
if(atom.size <= 24)
|
|
return 0; /* nothing left to read */
|
|
/* XXX: MP4 uses a C string, not a pascal one */
|
|
/* component name */
|
|
|
|
if(c->mp4) {
|
|
/* .mp4: C string */
|
|
while(get_byte(pb) && (++len < (atom.size - 24)));
|
|
} else {
|
|
/* .mov: PASCAL string */
|
|
#ifdef DEBUG
|
|
char* buf;
|
|
#endif
|
|
len = get_byte(pb);
|
|
#ifdef DEBUG
|
|
buf = (uint8_t*) av_malloc(len+1);
|
|
if (buf) {
|
|
get_buffer(pb, buf, len);
|
|
buf[len] = '\0';
|
|
av_log(NULL, AV_LOG_DEBUG, "**buf='%s'\n", buf);
|
|
av_free(buf);
|
|
} else
|
|
#endif
|
|
url_fskip(pb, len);
|
|
}
|
|
|
|
url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
|
|
return 0;
|
|
}
|
|
|
|
static int mov_mp4_read_descr_len(ByteIOContext *pb)
|
|
{
|
|
int len = 0;
|
|
int count = 4;
|
|
while (count--) {
|
|
int c = get_byte(pb);
|
|
len = (len << 7) | (c & 0x7f);
|
|
if (!(c & 0x80))
|
|
break;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static int mov_mp4_read_descr(ByteIOContext *pb, int *tag)
|
|
{
|
|
int len;
|
|
*tag = get_byte(pb);
|
|
len = mov_mp4_read_descr_len(pb);
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
|
|
#endif
|
|
return len;
|
|
}
|
|
|
|
static inline unsigned int get_be24(ByteIOContext *s)
|
|
{
|
|
unsigned int val;
|
|
val = get_byte(s) << 16;
|
|
val |= get_byte(s) << 8;
|
|
val |= get_byte(s);
|
|
return val;
|
|
}
|
|
|
|
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
int64_t start_pos = url_ftell(pb);
|
|
int tag, len;
|
|
|
|
print_atom("esds", atom);
|
|
|
|
/* Well, broken but suffisant for some MP4 streams */
|
|
get_be32(pb); /* version + flags */
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
if (tag == MP4ESDescrTag) {
|
|
get_be16(pb); /* ID */
|
|
get_byte(pb); /* priority */
|
|
} else
|
|
get_be16(pb); /* ID */
|
|
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
if (tag == MP4DecConfigDescrTag) {
|
|
sc->esds.object_type_id = get_byte(pb);
|
|
sc->esds.stream_type = get_byte(pb);
|
|
sc->esds.buffer_size_db = get_be24(pb);
|
|
sc->esds.max_bitrate = get_be32(pb);
|
|
sc->esds.avg_bitrate = get_be32(pb);
|
|
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
//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);
|
|
if (tag == MP4DecSpecificDescrTag) {
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
|
|
#endif
|
|
st->codec.extradata = (uint8_t*) av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (st->codec.extradata) {
|
|
get_buffer(pb, st->codec.extradata, len);
|
|
st->codec.extradata_size = len;
|
|
}
|
|
}
|
|
}
|
|
/* in any case, skip garbage */
|
|
url_fskip(pb, atom.size - ((url_ftell(pb) - start_pos)));
|
|
return 0;
|
|
}
|
|
|
|
/* this atom contains actual media data */
|
|
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
print_atom("mdat", atom);
|
|
|
|
if(atom.size == 0) /* wrong one (MP4) */
|
|
return 0;
|
|
c->found_mdat=1;
|
|
c->mdat_offset = atom.offset;
|
|
c->mdat_size = atom.size;
|
|
if(c->found_moov)
|
|
return 1; /* found both, just go */
|
|
url_fskip(pb, atom.size);
|
|
return 0; /* now go for moov */
|
|
}
|
|
|
|
/* this atom should contain all header atoms */
|
|
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
int err;
|
|
|
|
print_atom("moov", atom);
|
|
|
|
err = mov_read_default(c, pb, atom);
|
|
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
|
|
/* so we don't parse the whole file if over a network */
|
|
c->found_moov=1;
|
|
if(c->found_mdat)
|
|
return 1; /* found both, just go */
|
|
return 0; /* now go for mdat */
|
|
}
|
|
|
|
|
|
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
print_atom("mdhd", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
|
|
get_byte(pb); get_byte(pb);
|
|
get_byte(pb); /* flags */
|
|
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
|
|
c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
|
|
|
|
#ifdef DEBUG
|
|
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 */
|
|
#endif
|
|
get_be32(pb); /* duration */
|
|
|
|
get_be16(pb); /* language */
|
|
get_be16(pb); /* quality */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
print_atom("mvhd", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
c->time_scale = get_be32(pb); /* time scale */
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "time scale = %i\n", c->time_scale);
|
|
#endif
|
|
c->duration = get_be32(pb); /* duration */
|
|
get_be32(pb); /* preferred scale */
|
|
|
|
get_be16(pb); /* preferred volume */
|
|
|
|
url_fskip(pb, 10); /* reserved */
|
|
|
|
url_fskip(pb, 36); /* display matrix */
|
|
|
|
get_be32(pb); /* preview time */
|
|
get_be32(pb); /* preview duration */
|
|
get_be32(pb); /* poster time */
|
|
get_be32(pb); /* selection time */
|
|
get_be32(pb); /* selection duration */
|
|
get_be32(pb); /* current time */
|
|
get_be32(pb); /* next track ID */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if((uint64_t)atom.size > (1<<30))
|
|
return -1;
|
|
|
|
// currently SVQ3 decoder expect full STSD header - so let's fake it
|
|
// this should be fixed and just SMI header should be passed
|
|
av_free(st->codec.extradata);
|
|
st->codec.extradata_size = 0x5a + atom.size;
|
|
st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (st->codec.extradata) {
|
|
strcpy(st->codec.extradata, "SVQ3"); // fake
|
|
get_buffer(pb, st->codec.extradata + 0x5a, atom.size);
|
|
//av_log(NULL, AV_LOG_DEBUG, "Reading SMI %Ld %s\n", atom.size, (char*)st->codec.extradata + 0x5a);
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if((uint64_t)atom.size > (1<<30))
|
|
return -1;
|
|
|
|
av_free(st->codec.extradata);
|
|
|
|
st->codec.extradata_size = atom.size;
|
|
st->codec.extradata = (uint8_t*) av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (st->codec.extradata) {
|
|
get_buffer(pb, st->codec.extradata, atom.size);
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
print_atom("stco", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX/sizeof(int64_t))
|
|
return -1;
|
|
|
|
sc->chunk_count = entries;
|
|
sc->chunk_offsets = (int64_t*) av_malloc(entries * sizeof(int64_t));
|
|
if (!sc->chunk_offsets)
|
|
return -1;
|
|
if (atom.type == MKTAG('s', 't', 'c', 'o')) {
|
|
for(i=0; i<entries; i++) {
|
|
sc->chunk_offsets[i] = get_be32(pb);
|
|
}
|
|
} else if (atom.type == MKTAG('c', 'o', '6', '4')) {
|
|
for(i=0; i<entries; i++) {
|
|
sc->chunk_offsets[i] = get_be64(pb);
|
|
}
|
|
} else
|
|
return -1;
|
|
#ifdef DEBUG
|
|
/*
|
|
for(i=0; i<entries; i++) {
|
|
av_log(NULL, AV_LOG_DEBUG, "chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
|
|
}
|
|
*/
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
int entries, frames_per_sample;
|
|
uint32_t format;
|
|
uint8_t codec_name[32];
|
|
|
|
/* for palette traversal */
|
|
int color_depth;
|
|
int color_start;
|
|
int color_count;
|
|
int color_end;
|
|
int color_index;
|
|
int color_dec;
|
|
int color_greyscale;
|
|
unsigned char *color_table;
|
|
int j;
|
|
unsigned char r, g, b;
|
|
|
|
print_atom("stsd", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
while(entries--) { //Parsing Sample description table
|
|
enum CodecID id;
|
|
int size = get_be32(pb); /* size */
|
|
format = get_le32(pb); /* data format */
|
|
|
|
get_be32(pb); /* reserved */
|
|
get_be16(pb); /* reserved */
|
|
get_be16(pb); /* index */
|
|
|
|
/* for MPEG4: set codec type by looking for it */
|
|
id = codec_get_id(mov_video_tags, format);
|
|
if (id >= 0) {
|
|
AVCodec *codec;
|
|
codec = avcodec_find_decoder(id);
|
|
if (codec)
|
|
st->codec.codec_type = codec->type;
|
|
}
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
|
|
size,
|
|
(format >> 0) & 0xff,
|
|
(format >> 8) & 0xff,
|
|
(format >> 16) & 0xff,
|
|
(format >> 24) & 0xff,
|
|
st->codec.codec_type);
|
|
#endif
|
|
st->codec.codec_tag = format;
|
|
if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
|
|
MOV_atom_t a = { 0, 0, 0 };
|
|
st->codec.codec_id = id;
|
|
get_be16(pb); /* version */
|
|
get_be16(pb); /* revision level */
|
|
get_be32(pb); /* vendor */
|
|
get_be32(pb); /* temporal quality */
|
|
get_be32(pb); /* spacial quality */
|
|
st->codec.width = get_be16(pb); /* width */
|
|
st->codec.height = get_be16(pb); /* height */
|
|
#if 1
|
|
if (st->codec.codec_id == CODEC_ID_MPEG4) {
|
|
/* in some MPEG4 the width/height are not correct, so
|
|
we ignore this info */
|
|
st->codec.width = 0;
|
|
st->codec.height = 0;
|
|
}
|
|
#endif
|
|
get_be32(pb); /* horiz resolution */
|
|
get_be32(pb); /* vert resolution */
|
|
get_be32(pb); /* data size, always 0 */
|
|
frames_per_sample = get_be16(pb); /* frames per samples */
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "frames/samples = %d\n", frames_per_sample);
|
|
#endif
|
|
get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
|
|
if (codec_name[0] <= 31) {
|
|
memcpy(st->codec.codec_name, &codec_name[1],codec_name[0]);
|
|
st->codec.codec_name[codec_name[0]] = 0;
|
|
}
|
|
|
|
st->codec.bits_per_sample = get_be16(pb); /* depth */
|
|
st->codec.color_table_id = get_be16(pb); /* colortable id */
|
|
|
|
/* These are set in mov_read_stts and might already be set!
|
|
st->codec.time_base.den = 25;
|
|
st->codec.time_base.num = 1;
|
|
*/
|
|
size -= (16+8*4+2+32+2*2);
|
|
#if 0
|
|
while (size >= 8) {
|
|
MOV_atom_t a;
|
|
int64_t start_pos;
|
|
|
|
a.size = get_be32(pb);
|
|
a.type = get_le32(pb);
|
|
size -= 8;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "VIDEO: atom_type=%c%c%c%c atom.size=%Ld size_left=%d\n",
|
|
(a.type >> 0) & 0xff,
|
|
(a.type >> 8) & 0xff,
|
|
(a.type >> 16) & 0xff,
|
|
(a.type >> 24) & 0xff,
|
|
a.size, size);
|
|
#endif
|
|
start_pos = url_ftell(pb);
|
|
|
|
switch(a.type) {
|
|
case MKTAG('e', 's', 'd', 's'):
|
|
{
|
|
int tag, len;
|
|
/* Well, broken but suffisant for some MP4 streams */
|
|
get_be32(pb); /* version + flags */
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
if (tag == 0x03) {
|
|
/* MP4ESDescrTag */
|
|
get_be16(pb); /* ID */
|
|
get_byte(pb); /* priority */
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
if (tag != 0x04)
|
|
goto fail;
|
|
/* MP4DecConfigDescrTag */
|
|
get_byte(pb); /* objectTypeId */
|
|
get_be32(pb); /* streamType + buffer size */
|
|
get_be32(pb); /* max bit rate */
|
|
get_be32(pb); /* avg bit rate */
|
|
len = mov_mp4_read_descr(pb, &tag);
|
|
if (tag != 0x05)
|
|
goto fail;
|
|
/* MP4DecSpecificDescrTag */
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "Specific MPEG4 header len=%d\n", len);
|
|
#endif
|
|
sc->header_data = av_mallocz(len);
|
|
if (sc->header_data) {
|
|
get_buffer(pb, sc->header_data, len);
|
|
sc->header_len = len;
|
|
}
|
|
}
|
|
/* in any case, skip garbage */
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
fail:
|
|
av_log(NULL, AV_LOG_DEBUG, "ATOMENEWSIZE %Ld %d\n", atom.size, url_ftell(pb) - start_pos);
|
|
if (atom.size > 8) {
|
|
url_fskip(pb, (atom.size - 8) -
|
|
((url_ftell(pb) - start_pos)));
|
|
size -= atom.size - 8;
|
|
}
|
|
}
|
|
if (size > 0) {
|
|
/* unknown extension */
|
|
url_fskip(pb, size);
|
|
}
|
|
#else
|
|
|
|
/* figure out the palette situation */
|
|
color_depth = st->codec.bits_per_sample & 0x1F;
|
|
color_greyscale = st->codec.bits_per_sample & 0x20;
|
|
|
|
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
|
if ((color_depth == 2) || (color_depth == 4) ||
|
|
(color_depth == 8)) {
|
|
|
|
if (color_greyscale) {
|
|
|
|
/* compute the greyscale palette */
|
|
color_count = 1 << color_depth;
|
|
color_index = 255;
|
|
color_dec = 256 / (color_count - 1);
|
|
for (j = 0; j < color_count; j++) {
|
|
r = g = b = color_index;
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
color_index -= color_dec;
|
|
if (color_index < 0)
|
|
color_index = 0;
|
|
}
|
|
|
|
} else if (st->codec.color_table_id & 0x08) {
|
|
|
|
/* if flag bit 3 is set, use the default palette */
|
|
color_count = 1 << color_depth;
|
|
if (color_depth == 2)
|
|
color_table = ff_qt_default_palette_4;
|
|
else if (color_depth == 4)
|
|
color_table = ff_qt_default_palette_16;
|
|
else
|
|
color_table = ff_qt_default_palette_256;
|
|
|
|
for (j = 0; j < color_count; j++) {
|
|
r = color_table[j * 4 + 0];
|
|
g = color_table[j * 4 + 1];
|
|
b = color_table[j * 4 + 2];
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
|
|
} else {
|
|
|
|
/* load the palette from the file */
|
|
color_start = get_be32(pb);
|
|
color_count = get_be16(pb);
|
|
color_end = get_be16(pb);
|
|
for (j = color_start; j <= color_end; j++) {
|
|
/* each R, G, or B component is 16 bits;
|
|
* only use the top 8 bits; skip alpha bytes
|
|
* up front */
|
|
get_byte(pb);
|
|
get_byte(pb);
|
|
r = get_byte(pb);
|
|
get_byte(pb);
|
|
g = get_byte(pb);
|
|
get_byte(pb);
|
|
b = get_byte(pb);
|
|
get_byte(pb);
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
}
|
|
|
|
st->codec.palctrl = &c->palette_control;
|
|
st->codec.palctrl->palette_changed = 1;
|
|
} else
|
|
st->codec.palctrl = NULL;
|
|
|
|
a.size = size;
|
|
mov_read_default(c, pb, a);
|
|
#endif
|
|
} else {
|
|
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
|
|
if(st->codec.codec_id==CODEC_ID_AMR_NB || st->codec.codec_id==CODEC_ID_AMR_WB) //from TS26.244
|
|
{
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "AMR-NB or AMR-WB audio identified!!\n");
|
|
#endif
|
|
get_be32(pb);get_be32(pb); //Reserved_8
|
|
get_be16(pb);//Reserved_2
|
|
get_be16(pb);//Reserved_2
|
|
get_be32(pb);//Reserved_4
|
|
get_be16(pb);//TimeScale
|
|
get_be16(pb);//Reserved_2
|
|
|
|
//AMRSpecificBox.(10 bytes)
|
|
|
|
get_be32(pb); //size
|
|
get_be32(pb); //type=='damr'
|
|
get_be32(pb); //vendor
|
|
get_byte(pb); //decoder version
|
|
get_be16(pb); //mode_set
|
|
get_byte(pb); //mode_change_period
|
|
get_byte(pb); //frames_per_sample
|
|
|
|
st->duration = AV_NOPTS_VALUE;//Not possible to get from this info, must count number of AMR frames
|
|
if(st->codec.codec_id==CODEC_ID_AMR_NB)
|
|
{
|
|
st->codec.sample_rate=8000;
|
|
st->codec.channels=1;
|
|
}
|
|
else //AMR-WB
|
|
{
|
|
st->codec.sample_rate=16000;
|
|
st->codec.channels=1;
|
|
}
|
|
st->codec.bits_per_sample=16;
|
|
st->codec.bit_rate=0; /*It is not possible to tell this before we have
|
|
an audio frame and even then every frame can be different*/
|
|
}
|
|
else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 's' ))
|
|
{
|
|
//This is some stuff for the hint track, lets ignore it!
|
|
//Do some mp4 auto detect.
|
|
c->mp4=1;
|
|
size-=(16);
|
|
url_fskip(pb, size); /* The mp4s atom also contians a esds atom that we can skip*/
|
|
}
|
|
else if( st->codec.codec_tag == MKTAG( 'm', 'p', '4', 'a' ))
|
|
{
|
|
MOV_atom_t a;
|
|
int mp4_version;
|
|
|
|
/* Handle mp4 audio tag */
|
|
mp4_version=get_be16(pb);/*version*/
|
|
get_be16(pb); /*revesion*/
|
|
get_be32(pb);
|
|
st->codec.channels = get_be16(pb); /* channels */
|
|
st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
|
|
get_be32(pb);
|
|
st->codec.sample_rate = get_be16(pb); /* sample rate, not always correct */
|
|
get_be16(pb);
|
|
c->mp4=1;
|
|
|
|
if(mp4_version==1)
|
|
{
|
|
url_fskip(pb,16);
|
|
a.size=size-(16+20+16);
|
|
}
|
|
else
|
|
a.size=size-(16+20);
|
|
|
|
a.offset=url_ftell(pb);
|
|
|
|
mov_read_default(c, pb, a);
|
|
|
|
/* Get correct sample rate from extradata */
|
|
if(st->codec.extradata_size) {
|
|
const int samplerate_table[] = {
|
|
96000, 88200, 64000, 48000, 44100, 32000,
|
|
24000, 22050, 16000, 12000, 11025, 8000,
|
|
7350, 0, 0, 0
|
|
};
|
|
unsigned char *px = st->codec.extradata;
|
|
// 5 bits objectTypeIndex, 4 bits sampleRateIndex, 4 bits channels
|
|
int samplerate_index = ((px[0] & 7) << 1) + ((px[1] >> 7) & 1);
|
|
st->codec.sample_rate = samplerate_table[samplerate_index];
|
|
st->codec.channels = (px[1] >> 3) & 15;
|
|
}
|
|
}
|
|
else if( st->codec.codec_tag == MKTAG( 'a', 'l', 'a', 'c' ))
|
|
{
|
|
/* Handle alac audio tag + special extradata */
|
|
get_be32(pb); /* version */
|
|
get_be32(pb);
|
|
st->codec.channels = get_be16(pb); /* channels */
|
|
st->codec.bits_per_sample = get_be16(pb); /* bits per sample */
|
|
get_be32(pb);
|
|
st->codec.sample_rate = get_be16(pb);
|
|
get_be16(pb);
|
|
|
|
/* fetch the 36-byte extradata needed for alac decoding */
|
|
st->codec.extradata_size = 36;
|
|
st->codec.extradata = (uint8_t*)
|
|
av_mallocz(st->codec.extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
get_buffer(pb, st->codec.extradata, st->codec.extradata_size);
|
|
}
|
|
else if(size>=(16+20))
|
|
{//16 bytes read, reading atleast 20 more
|
|
uint16_t version;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "audio size=0x%X\n",size);
|
|
#endif
|
|
version = get_be16(pb); /* version */
|
|
get_be16(pb); /* revision level */
|
|
get_be32(pb); /* vendor */
|
|
|
|
st->codec.channels = get_be16(pb); /* channel count */
|
|
st->codec.bits_per_sample = get_be16(pb); /* sample size */
|
|
|
|
/* handle specific s8 codec */
|
|
get_be16(pb); /* compression id = 0*/
|
|
get_be16(pb); /* packet size = 0 */
|
|
|
|
st->codec.sample_rate = ((get_be32(pb) >> 16));
|
|
//av_log(NULL, AV_LOG_DEBUG, "CODECID %d %d %.4s\n", st->codec.codec_id, CODEC_ID_PCM_S16BE, (char*)&format);
|
|
|
|
switch (st->codec.codec_id) {
|
|
case CODEC_ID_PCM_S16BE:
|
|
if (st->codec.bits_per_sample == 8)
|
|
st->codec.codec_id = CODEC_ID_PCM_S8;
|
|
/* fall */
|
|
case CODEC_ID_PCM_U8:
|
|
st->codec.bit_rate = st->codec.sample_rate * 8;
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
|
|
//Read QT version 1 fields. In version 0 theese dont exist
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "version =%d mp4=%d\n",version,c->mp4);
|
|
av_log(NULL, AV_LOG_DEBUG, "size-(16+20+16)=%d\n",size-(16+20+16));
|
|
#endif
|
|
if((version==1) && size>=(16+20+16))
|
|
{
|
|
get_be32(pb); /* samples per packet */
|
|
get_be32(pb); /* bytes per packet */
|
|
get_be32(pb); /* bytes per frame */
|
|
get_be32(pb); /* bytes per sample */
|
|
if(size>(16+20+16))
|
|
{
|
|
//Optional, additional atom-based fields
|
|
MOV_atom_t a = { format, url_ftell(pb), size - (16 + 20 + 16 + 8) };
|
|
#ifdef DEBUG
|
|
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 ),
|
|
(format >> 0) & 0xff,
|
|
(format >> 8) & 0xff,
|
|
(format >> 16) & 0xff,
|
|
(format >> 24) & 0xff);
|
|
#endif
|
|
mov_read_default(c, pb, a);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//We should be down to 0 bytes here, but lets make sure.
|
|
size-=(16+20);
|
|
#ifdef DEBUG
|
|
if(size>0)
|
|
av_log(NULL, AV_LOG_DEBUG, "skipping 0x%X bytes\n",size-(16+20));
|
|
#endif
|
|
url_fskip(pb, size);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size-=16;
|
|
//Unknown size, but lets do our best and skip the rest.
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "Strange size, skipping 0x%X bytes\n",size);
|
|
#endif
|
|
url_fskip(pb, size);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
print_atom("stsc", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX / sizeof(MOV_sample_to_chunk_tbl))
|
|
return -1;
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
#endif
|
|
sc->sample_to_chunk_sz = entries;
|
|
sc->sample_to_chunk = (MOV_sample_to_chunk_tbl*) av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
|
|
if (!sc->sample_to_chunk)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->sample_to_chunk[i].first = get_be32(pb);
|
|
sc->sample_to_chunk[i].count = get_be32(pb);
|
|
sc->sample_to_chunk[i].id = get_be32(pb);
|
|
#ifdef DEBUG
|
|
/* 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); */
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
print_atom("stss", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX / sizeof(long))
|
|
return -1;
|
|
|
|
sc->keyframe_count = entries;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "keyframe_count = %ld\n", sc->keyframe_count);
|
|
#endif
|
|
sc->keyframes = (long*) av_malloc(entries * sizeof(long));
|
|
if (!sc->keyframes)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->keyframes[i] = get_be32(pb);
|
|
#ifdef DEBUG
|
|
/* av_log(NULL, AV_LOG_DEBUG, "keyframes[]=%ld\n", sc->keyframes[i]); */
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
print_atom("stsz", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
sc->sample_size = get_be32(pb);
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(long))
|
|
return -1;
|
|
|
|
sc->sample_count = entries;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "sample_size = %ld sample_count = %ld\n", sc->sample_size, sc->sample_count);
|
|
#endif
|
|
if(sc->sample_size)
|
|
return 0; /* there isn't any table following */
|
|
sc->sample_sizes = (long*) av_malloc(entries * sizeof(long));
|
|
if (!sc->sample_sizes)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->sample_sizes[i] = get_be32(pb);
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "sample_sizes[]=%ld\n", sc->sample_sizes[i]);
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
int64_t duration=0;
|
|
int64_t total_sample_count=0;
|
|
|
|
print_atom("stts", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(Time2Sample))
|
|
return -1;
|
|
|
|
c->streams[c->fc->nb_streams-1]->stts_count = entries;
|
|
c->streams[c->fc->nb_streams-1]->stts_data = av_malloc(entries * sizeof(Time2Sample));
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
#endif
|
|
for(i=0; i<entries; i++) {
|
|
int sample_duration;
|
|
int sample_count;
|
|
|
|
sample_count=get_be32(pb);
|
|
sample_duration = get_be32(pb);
|
|
c->streams[c->fc->nb_streams - 1]->stts_data[i].count= sample_count;
|
|
c->streams[c->fc->nb_streams - 1]->stts_data[i].duration= sample_duration;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
|
|
#endif
|
|
duration+=sample_duration*sample_count;
|
|
total_sample_count+=sample_count;
|
|
|
|
#if 0 //We calculate an average instead, needed by .mp4-files created with nec e606 3g phone
|
|
|
|
if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
|
|
st->codec.time_base.num = sample_duration ? sample_duration : 1;
|
|
st->codec.time_base.den = c->streams[c->fc->nb_streams-1]->time_scale;
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.time_base.den, sample_duration);
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*The stsd atom which contain codec type sometimes comes after the stts so we cannot check for codec_type*/
|
|
if(duration>0)
|
|
{
|
|
av_reduce(
|
|
&st->codec.time_base.den,
|
|
&st->codec.time_base.num,
|
|
c->streams[c->fc->nb_streams-1]->time_scale * total_sample_count,
|
|
duration,
|
|
INT_MAX
|
|
);
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "FRAME RATE average (video or audio)= %f (tot sample count= %i ,tot dur= %i timescale=%d)\n", (float)st->codec.time_base.den/st->codec.time_base.num,total_sample_count,duration,c->streams[c->fc->nb_streams-1]->time_scale);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
st->codec.time_base.num = 1;
|
|
st->codec.time_base.den = c->streams[c->fc->nb_streams-1]->time_scale;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
// AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
//MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
print_atom("ctts", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(Time2Sample))
|
|
return -1;
|
|
|
|
c->streams[c->fc->nb_streams-1]->ctts_count = entries;
|
|
c->streams[c->fc->nb_streams-1]->ctts_data = av_malloc(entries * sizeof(Time2Sample));
|
|
|
|
// #ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
// #endif
|
|
for(i=0; i<entries; i++) {
|
|
c->streams[c->fc->nb_streams - 1]->ctts_data[i].count= get_be32(pb);
|
|
c->streams[c->fc->nb_streams - 1]->ctts_data[i].duration= get_be32(pb);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
|
|
print_atom("trak", atom);
|
|
|
|
st = av_new_stream(c->fc, c->fc->nb_streams);
|
|
if (!st) return -2;
|
|
sc = (MOVStreamContext*) av_mallocz(sizeof(MOVStreamContext));
|
|
if (!sc) {
|
|
av_free(st);
|
|
return -1;
|
|
}
|
|
|
|
sc->sample_to_chunk_index = -1;
|
|
st->priv_data = sc;
|
|
st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
|
|
st->start_time = 0; /* XXX: check */
|
|
st->duration = (c->duration * (int64_t)AV_TIME_BASE) / c->time_scale;
|
|
c->streams[c->fc->nb_streams-1] = sc;
|
|
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
|
|
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st;
|
|
|
|
print_atom("tkhd", atom);
|
|
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
get_byte(pb); /* version */
|
|
|
|
get_byte(pb); get_byte(pb);
|
|
get_byte(pb); /* flags */
|
|
/*
|
|
MOV_TRACK_ENABLED 0x0001
|
|
MOV_TRACK_IN_MOVIE 0x0002
|
|
MOV_TRACK_IN_PREVIEW 0x0004
|
|
MOV_TRACK_IN_POSTER 0x0008
|
|
*/
|
|
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
|
|
get_be32(pb); /* reserved */
|
|
st->start_time = 0; /* check */
|
|
st->duration = (get_be32(pb) * (int64_t)AV_TIME_BASE) / c->time_scale; /* duration */
|
|
get_be32(pb); /* reserved */
|
|
get_be32(pb); /* reserved */
|
|
|
|
get_be16(pb); /* layer */
|
|
get_be16(pb); /* alternate group */
|
|
get_be16(pb); /* volume */
|
|
get_be16(pb); /* reserved */
|
|
|
|
url_fskip(pb, 36); /* display matrix */
|
|
|
|
/* those are fixed-point */
|
|
st->codec.width = get_be32(pb) >> 16; /* track width */
|
|
st->codec.height = get_be32(pb) >> 16; /* track height */
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
|
|
/* like the files created with Adobe Premiere 5.0, for samples see */
|
|
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
|
|
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
int err;
|
|
|
|
#ifdef DEBUG
|
|
print_atom("wide", atom);
|
|
debug_indent++;
|
|
#endif
|
|
if (atom.size < 8)
|
|
return 0; /* continue */
|
|
if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
|
|
url_fskip(pb, atom.size - 4);
|
|
return 0;
|
|
}
|
|
atom.type = get_le32(pb);
|
|
atom.offset += 8;
|
|
atom.size -= 8;
|
|
if (atom.type != MKTAG('m', 'd', 'a', 't')) {
|
|
url_fskip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
err = mov_read_mdat(c, pb, atom);
|
|
#ifdef DEBUG
|
|
debug_indent--;
|
|
#endif
|
|
return err;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_ZLIB
|
|
static int null_read_packet(void *opaque, uint8_t *buf, int buf_size)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
ByteIOContext ctx;
|
|
uint8_t *cmov_data;
|
|
uint8_t *moov_data; /* uncompressed data */
|
|
long cmov_len, moov_len;
|
|
int ret;
|
|
|
|
print_atom("cmov", atom);
|
|
|
|
get_be32(pb); /* dcom atom */
|
|
if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
|
|
return -1;
|
|
if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
|
|
av_log(NULL, AV_LOG_DEBUG, "unknown compression for cmov atom !");
|
|
return -1;
|
|
}
|
|
get_be32(pb); /* cmvd atom */
|
|
if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
|
|
return -1;
|
|
moov_len = get_be32(pb); /* uncompressed size */
|
|
cmov_len = atom.size - 6 * 4;
|
|
|
|
cmov_data = (uint8_t *) av_malloc(cmov_len);
|
|
if (!cmov_data)
|
|
return -1;
|
|
moov_data = (uint8_t *) av_malloc(moov_len);
|
|
if (!moov_data) {
|
|
av_free(cmov_data);
|
|
return -1;
|
|
}
|
|
get_buffer(pb, cmov_data, cmov_len);
|
|
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
|
|
return -1;
|
|
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, null_read_packet, NULL, NULL) != 0)
|
|
return -1;
|
|
ctx.buf_end = ctx.buffer + moov_len;
|
|
atom.type = MKTAG( 'm', 'o', 'o', 'v' );
|
|
atom.offset = 0;
|
|
atom.size = moov_len;
|
|
#ifdef DEBUG
|
|
{ int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
|
|
#endif
|
|
ret = mov_read_default(c, &ctx, atom);
|
|
av_free(moov_data);
|
|
av_free(cmov_data);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
/* edit list atom */
|
|
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
int i, edit_count;
|
|
print_atom("elst", atom);
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
|
|
|
|
for(i=0; i<edit_count; i++){
|
|
get_be32(pb); /* Track duration */
|
|
get_be32(pb); /* Media time */
|
|
get_be32(pb); /* Media rate */
|
|
}
|
|
#ifdef DEBUG
|
|
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);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = {
|
|
/* mp4 atoms */
|
|
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
|
|
{ MKTAG( 'c', 'p', 'r', 't' ), mov_read_default },
|
|
{ MKTAG( 'c', 'r', 'h', 'd' ), mov_read_default },
|
|
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
|
|
{ MKTAG( 'd', 'i', 'n', 'f' ), mov_read_default }, /* data information */
|
|
{ MKTAG( 'd', 'p', 'n', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'd', 'r', 'e', 'f' ), mov_read_leaf },
|
|
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
|
|
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
|
|
{ MKTAG( 'f', 'r', 'e', 'e' ), mov_read_leaf },
|
|
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
|
|
{ MKTAG( 'h', 'i', 'n', 't' ), mov_read_leaf },
|
|
{ MKTAG( 'h', 'm', 'h', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'i', 'o', 'd', 's' ), mov_read_leaf },
|
|
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
|
|
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
|
|
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
|
|
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
|
|
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
|
|
{ MKTAG( 'm', 'p', '4', 'a' ), mov_read_default },
|
|
{ MKTAG( 'm', 'p', '4', 's' ), mov_read_default },
|
|
{ MKTAG( 'm', 'p', '4', 'v' ), mov_read_default },
|
|
{ MKTAG( 'm', 'p', 'o', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
|
|
{ MKTAG( 'n', 'm', 'h', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'o', 'd', 'h', 'd' ), mov_read_default },
|
|
{ MKTAG( 's', 'd', 'h', 'd' ), mov_read_default },
|
|
{ MKTAG( 's', 'k', 'i', 'p' ), mov_read_leaf },
|
|
{ MKTAG( 's', 'm', 'h', 'd' ), mov_read_leaf }, /* sound media info header */
|
|
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
|
|
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
|
|
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
|
|
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
|
|
{ MKTAG( 's', 't', 'd', 'p' ), mov_read_default },
|
|
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
|
|
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
|
|
{ MKTAG( 's', 't', 's', 'h' ), mov_read_default },
|
|
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
|
|
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
|
|
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
|
|
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
|
|
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
|
|
{ MKTAG( 't', 'r', 'e', 'f' ), mov_read_default }, /* not really */
|
|
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_leaf },
|
|
{ MKTAG( 'u', 'r', 'l', ' ' ), mov_read_leaf },
|
|
{ MKTAG( 'u', 'r', 'n', ' ' ), mov_read_leaf },
|
|
{ MKTAG( 'u', 'u', 'i', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'v', 'm', 'h', 'd' ), mov_read_leaf }, /* video media info header */
|
|
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_default },
|
|
/* extra mp4 */
|
|
{ MKTAG( 'M', 'D', 'E', 'S' ), mov_read_leaf },
|
|
/* QT atoms */
|
|
{ MKTAG( 'c', 'h', 'a', 'p' ), mov_read_leaf },
|
|
{ MKTAG( 'c', 'l', 'i', 'p' ), mov_read_default },
|
|
{ MKTAG( 'c', 'r', 'g', 'n' ), mov_read_leaf },
|
|
{ MKTAG( 'c', 't', 'a', 'b' ), mov_read_ctab },
|
|
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
|
|
{ MKTAG( 'k', 'm', 'a', 't' ), mov_read_leaf },
|
|
{ MKTAG( 'm', 'a', 't', 't' ), mov_read_default },
|
|
{ MKTAG( 'r', 'd', 'r', 'f' ), mov_read_leaf },
|
|
{ MKTAG( 'r', 'm', 'd', 'a' ), mov_read_default },
|
|
{ MKTAG( 'r', 'm', 'd', 'r' ), mov_read_leaf },
|
|
{ MKTAG( 'r', 'm', 'r', 'a' ), mov_read_default },
|
|
{ MKTAG( 's', 'c', 'p', 't' ), mov_read_leaf },
|
|
{ MKTAG( 's', 's', 'r', 'c' ), mov_read_leaf },
|
|
{ MKTAG( 's', 'y', 'n', 'c' ), mov_read_leaf },
|
|
{ MKTAG( 't', 'c', 'm', 'd' ), mov_read_leaf },
|
|
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
|
|
//{ MKTAG( 'r', 'm', 'q', 'u' ), mov_read_leaf },
|
|
#ifdef CONFIG_ZLIB
|
|
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
|
|
#else
|
|
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_leaf },
|
|
#endif
|
|
{ 0L, mov_read_leaf }
|
|
};
|
|
|
|
static void mov_free_stream_context(MOVStreamContext *sc)
|
|
{
|
|
if(sc) {
|
|
av_freep(&sc->chunk_offsets);
|
|
av_freep(&sc->sample_to_chunk);
|
|
av_freep(&sc->sample_sizes);
|
|
av_freep(&sc->keyframes);
|
|
av_freep(&sc->header_data);
|
|
av_freep(&sc->stts_data);
|
|
av_freep(&sc->ctts_data);
|
|
av_freep(&sc);
|
|
}
|
|
}
|
|
|
|
static inline uint32_t mov_to_tag(uint8_t *buf)
|
|
{
|
|
return MKTAG(buf[0], buf[1], buf[2], buf[3]);
|
|
}
|
|
|
|
static inline uint32_t to_be32(uint8_t *buf)
|
|
{
|
|
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
|
|
}
|
|
|
|
/* XXX: is it sufficient ? */
|
|
static int mov_probe(AVProbeData *p)
|
|
{
|
|
unsigned int offset;
|
|
uint32_t tag;
|
|
int score = 0;
|
|
|
|
/* check file header */
|
|
if (p->buf_size <= 12)
|
|
return 0;
|
|
offset = 0;
|
|
for(;;) {
|
|
/* ignore invalid offset */
|
|
if ((offset + 8) > (unsigned int)p->buf_size)
|
|
return score;
|
|
tag = mov_to_tag(p->buf + offset + 4);
|
|
switch(tag) {
|
|
/* check for obvious tags */
|
|
case MKTAG( 'm', 'o', 'o', 'v' ):
|
|
case MKTAG( 'm', 'd', 'a', 't' ):
|
|
case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
|
|
case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
|
|
return AVPROBE_SCORE_MAX;
|
|
/* those are more common words, so rate then a bit less */
|
|
case MKTAG( 'w', 'i', 'd', 'e' ):
|
|
case MKTAG( 'f', 'r', 'e', 'e' ):
|
|
case MKTAG( 'j', 'u', 'n', 'k' ):
|
|
case MKTAG( 'p', 'i', 'c', 't' ):
|
|
return AVPROBE_SCORE_MAX - 5;
|
|
case MKTAG( 'f', 't', 'y', 'p' ):
|
|
case MKTAG( 's', 'k', 'i', 'p' ):
|
|
case MKTAG( 'u', 'u', 'i', 'd' ):
|
|
offset = to_be32(p->buf+offset) + offset;
|
|
/* if we only find those cause probedata is too small at least rate them */
|
|
score = AVPROBE_SCORE_MAX - 50;
|
|
break;
|
|
default:
|
|
/* unrecognized tag */
|
|
return score;
|
|
}
|
|
}
|
|
return score;
|
|
}
|
|
|
|
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
|
{
|
|
MOVContext *mov = (MOVContext *) s->priv_data;
|
|
ByteIOContext *pb = &s->pb;
|
|
int i, j, nb, err;
|
|
MOV_atom_t atom = { 0, 0, 0 };
|
|
|
|
mov->fc = s;
|
|
mov->parse_table = mov_default_parse_table;
|
|
#if 0
|
|
/* XXX: I think we should auto detect */
|
|
if(s->iformat->name[1] == 'p')
|
|
mov->mp4 = 1;
|
|
#endif
|
|
if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
|
atom.size = url_filesize(url_fileno(pb));
|
|
else
|
|
atom.size = 0x7FFFFFFFFFFFFFFFLL;
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "filesz=%Ld\n", atom.size);
|
|
#endif
|
|
|
|
/* check MOV header */
|
|
err = mov_read_default(mov, pb, atom);
|
|
if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
|
|
av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%lld\n",
|
|
err, mov->found_moov, mov->found_mdat, url_ftell(pb));
|
|
return -1;
|
|
}
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
|
|
#endif
|
|
/* some cleanup : make sure we are on the mdat atom */
|
|
if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
|
|
url_fseek(pb, mov->mdat_offset, SEEK_SET);
|
|
|
|
mov->next_chunk_offset = mov->mdat_offset; /* initialise reading */
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "mdat_reset_offset=%d\n", (int) url_ftell(pb));
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "streams= %d\n", s->nb_streams);
|
|
#endif
|
|
mov->total_streams = nb = s->nb_streams;
|
|
|
|
#if 1
|
|
for(i=0; i<s->nb_streams;) {
|
|
if(s->streams[i]->codec.codec_type == CODEC_TYPE_MOV_OTHER) {/* not audio, not video, delete */
|
|
av_free(s->streams[i]);
|
|
for(j=i+1; j<s->nb_streams; j++)
|
|
s->streams[j-1] = s->streams[j];
|
|
s->nb_streams--;
|
|
} else
|
|
i++;
|
|
}
|
|
for(i=0; i<s->nb_streams;i++) {
|
|
MOVStreamContext *sc;
|
|
sc = (MOVStreamContext *)s->streams[i]->priv_data;
|
|
sc->ffindex = i;
|
|
sc->is_ff_stream = 1;
|
|
}
|
|
#endif
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "real streams= %d\n", s->nb_streams);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* Yes, this is ugly... I didn't write the specs of QT :p */
|
|
/* XXX:remove useless commented code sometime */
|
|
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MOVContext *mov = (MOVContext *) s->priv_data;
|
|
MOVStreamContext *sc;
|
|
int64_t offset = 0x0FFFFFFFFFFFFFFFLL;
|
|
int i, a, b, m;
|
|
int size;
|
|
int idx;
|
|
size = 0x0FFFFFFF;
|
|
|
|
#ifdef MOV_SPLIT_CHUNKS
|
|
if (mov->partial) {
|
|
sc = mov->partial;
|
|
idx = sc->sample_to_chunk_index;
|
|
|
|
if (idx < 0) return 0;
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "sc[ffid %d]->sample_size = %d\n", sc->ffindex, sc->sample_size);
|
|
#endif
|
|
//size = sc->sample_sizes[sc->current_sample];
|
|
// that ain't working...
|
|
//size = (sc->sample_size)?sc->sample_size:sc->sample_sizes[sc->current_sample];
|
|
size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
|
|
|
|
sc->current_sample++;
|
|
sc->left_in_chunk--;
|
|
|
|
if (sc->left_in_chunk <= 0)
|
|
mov->partial = 0;
|
|
offset = mov->next_chunk_offset;
|
|
/* extract the sample */
|
|
|
|
goto readchunk;
|
|
}
|
|
#endif
|
|
|
|
again:
|
|
sc = 0;
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
MOVStreamContext *msc = mov->streams[i];
|
|
//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));
|
|
if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
|
|
&& (msc->chunk_offsets[msc->next_chunk] < offset)) {
|
|
sc = msc;
|
|
offset = msc->chunk_offsets[msc->next_chunk];
|
|
//av_log(NULL, AV_LOG_DEBUG, "SELETED %Ld i:%d\n", offset, i);
|
|
}
|
|
}
|
|
if (!sc || offset==0x0FFFFFFFFFFFFFFFLL)
|
|
return -1;
|
|
|
|
sc->next_chunk++;
|
|
|
|
if(mov->next_chunk_offset < offset) { /* some meta data */
|
|
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
|
|
mov->next_chunk_offset = offset;
|
|
}
|
|
|
|
//av_log(NULL, AV_LOG_DEBUG, "chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
|
|
if(!sc->is_ff_stream || (s->streams[sc->ffindex]->discard >= AVDISCARD_ALL)) {
|
|
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
|
|
mov->next_chunk_offset = offset;
|
|
offset = 0x0FFFFFFFFFFFFFFFLL;
|
|
goto again;
|
|
}
|
|
|
|
/* now get the chunk size... */
|
|
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
MOVStreamContext *msc = mov->streams[i];
|
|
if ((msc->next_chunk < msc->chunk_count)
|
|
&& ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
|
|
size = msc->chunk_offsets[msc->next_chunk] - offset;
|
|
}
|
|
|
|
#ifdef MOV_MINOLTA_FIX
|
|
//Make sure that size is according to sample_size (Needed by .mov files
|
|
//created on a Minolta Dimage Xi where audio chunks contains waste data in the end)
|
|
//Maybe we should really not only check sc->sample_size, but also sc->sample_sizes
|
|
//but I have no such movies
|
|
if (sc->sample_size > 0) {
|
|
int foundsize=0;
|
|
for(i=0; i<(sc->sample_to_chunk_sz); i++) {
|
|
if( (sc->sample_to_chunk[i].first)<=(sc->next_chunk) )
|
|
{
|
|
// I can't figure out why for PCM audio sample_size is always 1
|
|
// (it should actually be channels*bits_per_second/8) but it is.
|
|
AVCodecContext* cod = &s->streams[sc->ffindex]->codec;
|
|
if (sc->sample_size == 1 && (cod->codec_id == CODEC_ID_PCM_S16BE || cod->codec_id == CODEC_ID_PCM_S16LE))
|
|
foundsize=(sc->sample_to_chunk[i].count*cod->channels*cod->bits_per_sample)/8;
|
|
else
|
|
foundsize=sc->sample_to_chunk[i].count*sc->sample_size;
|
|
}
|
|
#ifdef DEBUG
|
|
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);
|
|
#endif
|
|
}
|
|
if( (foundsize>0) && (foundsize<size) )
|
|
{
|
|
#ifdef DEBUG
|
|
/*av_log(NULL, AV_LOG_DEBUG, "this size should actually be %d\n",foundsize);*/
|
|
#endif
|
|
size=foundsize;
|
|
}
|
|
}
|
|
#endif //MOV_MINOLTA_FIX
|
|
|
|
#ifdef MOV_SPLIT_CHUNKS
|
|
/* split chunks into samples */
|
|
if (sc->sample_size == 0) {
|
|
idx = sc->sample_to_chunk_index;
|
|
if ((idx + 1 < sc->sample_to_chunk_sz)
|
|
&& (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
|
|
idx++;
|
|
sc->sample_to_chunk_index = idx;
|
|
if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
|
|
mov->partial = sc;
|
|
/* we'll have to get those samples before next chunk */
|
|
sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
|
|
size = (sc->sample_size > 1)?sc->sample_size:sc->sample_sizes[sc->current_sample];
|
|
}
|
|
|
|
sc->current_sample++;
|
|
}
|
|
#endif
|
|
|
|
readchunk:
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "chunk: %lli -> %lli (%i)\n", offset, offset + size, size);
|
|
#endif
|
|
if(size == 0x0FFFFFFF)
|
|
size = mov->mdat_size + mov->mdat_offset - offset;
|
|
if(size < 0)
|
|
return -1;
|
|
if(size == 0)
|
|
return -1;
|
|
url_fseek(&s->pb, offset, SEEK_SET);
|
|
|
|
//av_log(NULL, AV_LOG_DEBUG, "READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
|
|
if (sc->header_len > 0) {
|
|
av_new_packet(pkt, size + sc->header_len);
|
|
memcpy(pkt->data, sc->header_data, sc->header_len);
|
|
get_buffer(&s->pb, pkt->data + sc->header_len, size);
|
|
/* free header */
|
|
av_freep(&sc->header_data);
|
|
sc->header_len = 0;
|
|
} else {
|
|
av_new_packet(pkt, size);
|
|
get_buffer(&s->pb, pkt->data, pkt->size);
|
|
}
|
|
pkt->stream_index = sc->ffindex;
|
|
|
|
// If the keyframes table exists, mark any samples that are in the table as key frames.
|
|
// If no table exists, treat very sample as a key frame.
|
|
if (sc->keyframes) {
|
|
a = 0;
|
|
b = sc->keyframe_count - 1;
|
|
|
|
while (a < b) {
|
|
m = (a + b + 1) >> 1;
|
|
if (sc->keyframes[m] > sc->current_sample) {
|
|
b = m - 1;
|
|
} else {
|
|
a = m;
|
|
}
|
|
}
|
|
|
|
if (sc->keyframes[a] == sc->current_sample)
|
|
pkt->flags |= PKT_FLAG_KEY;
|
|
}
|
|
else
|
|
pkt->flags |= PKT_FLAG_KEY;
|
|
|
|
#ifdef DEBUG
|
|
/*
|
|
av_log(NULL, AV_LOG_DEBUG, "Packet (%d, %ld) ", pkt->stream_index, pkt->size);
|
|
for(i=0; i<8; i++)
|
|
av_log(NULL, AV_LOG_DEBUG, "%02x ", pkt->data[i]);
|
|
for(i=0; i<8; i++)
|
|
av_log(NULL, AV_LOG_DEBUG, "%c ", (pkt->data[i]) & 0x7F);
|
|
av_log(NULL, AV_LOG_DEBUG, "\n");
|
|
*/
|
|
#endif
|
|
|
|
mov->next_chunk_offset = offset + size;
|
|
|
|
/* find the corresponding dts */
|
|
if (sc && sc->sample_to_time_index < sc->stts_count && pkt) {
|
|
unsigned int count;
|
|
uint64_t dts, pts;
|
|
unsigned int duration = sc->stts_data[sc->sample_to_time_index].duration;
|
|
count = sc->stts_data[sc->sample_to_time_index].count;
|
|
if ((sc->sample_to_time_sample + count) < sc->current_sample) {
|
|
sc->sample_to_time_sample += count;
|
|
sc->sample_to_time_time += count*duration;
|
|
sc->sample_to_time_index ++;
|
|
duration = sc->stts_data[sc->sample_to_time_index].duration;
|
|
}
|
|
dts = sc->sample_to_time_time + (sc->current_sample-1 - sc->sample_to_time_sample) * (int64_t)duration;
|
|
/* find the corresponding pts */
|
|
if (sc->sample_to_ctime_index < sc->ctts_count) {
|
|
int duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
|
|
int count = sc->ctts_data[sc->sample_to_ctime_index].count;
|
|
|
|
if ((sc->sample_to_ctime_sample + count) < sc->current_sample) {
|
|
sc->sample_to_ctime_sample += count;
|
|
sc->sample_to_ctime_index ++;
|
|
duration = sc->ctts_data[sc->sample_to_ctime_index].duration;
|
|
}
|
|
pts = dts + duration;
|
|
}else
|
|
pts = dts;
|
|
pkt->pts = av_rescale( pts,
|
|
(int64_t)s->streams[sc->ffindex]->time_base.den,
|
|
(int64_t)sc->time_scale * (int64_t)s->streams[sc->ffindex]->time_base.num );
|
|
pkt->dts = av_rescale( dts,
|
|
(int64_t)s->streams[sc->ffindex]->time_base.den,
|
|
(int64_t)sc->time_scale * (int64_t)s->streams[sc->ffindex]->time_base.num );
|
|
#ifdef DEBUG
|
|
av_log(NULL, AV_LOG_DEBUG, "stream #%d smp #%ld dts = %lld pts = %lld (smp:%ld time:%lld idx:%d ent:%d count:%d dur:%d)\n"
|
|
, pkt->stream_index, sc->current_sample-1, pkt->dts, pkt->pts
|
|
, sc->sample_to_time_sample
|
|
, sc->sample_to_time_time
|
|
, sc->sample_to_time_index
|
|
, sc->stts_count
|
|
, count
|
|
, duration);
|
|
#endif
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
|
|
/**
|
|
* Seek method based on the one described in the Appendix C of QTFileFormat.pdf
|
|
*/
|
|
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
|
|
{
|
|
MOVContext* mov = (MOVContext *) s->priv_data;
|
|
MOVStreamContext* sc;
|
|
int32_t i, a, b, m;
|
|
int64_t sample_time;
|
|
int64_t start_time;
|
|
int32_t seek_sample, sample;
|
|
int32_t duration;
|
|
int32_t count;
|
|
int32_t chunk;
|
|
int32_t left_in_chunk;
|
|
int64_t chunk_file_offset;
|
|
int64_t sample_file_offset;
|
|
int32_t first_chunk_sample;
|
|
int32_t sample_to_chunk_idx;
|
|
int sample_to_time_index;
|
|
long sample_to_time_sample = 0;
|
|
uint64_t sample_to_time_time = 0;
|
|
int mov_idx;
|
|
|
|
// Find the corresponding mov stream
|
|
for (mov_idx = 0; mov_idx < mov->total_streams; mov_idx++)
|
|
if (mov->streams[mov_idx]->ffindex == stream_index)
|
|
break;
|
|
if (mov_idx == mov->total_streams) {
|
|
av_log(s, AV_LOG_ERROR, "mov: requested stream was not found in mov streams (idx=%i)\n", stream_index);
|
|
return -1;
|
|
}
|
|
sc = mov->streams[mov_idx];
|
|
|
|
// Step 1. Find the edit that contains the requested time (elst)
|
|
if (sc->edit_count) {
|
|
// FIXME should handle edit list
|
|
av_log(s, AV_LOG_ERROR, "mov: does not handle seeking in files that contain edit list (c:%d)\n", sc->edit_count);
|
|
return -1;
|
|
}
|
|
|
|
// Step 2. Find the corresponding sample using the Time-to-sample atom (stts) */
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Searching for time %li in stream #%i (time_scale=%i)\n", (long)timestamp, mov_idx, sc->time_scale);
|
|
#endif
|
|
// convert timestamp from time_base unit to timescale unit
|
|
sample_time = av_rescale( timestamp,
|
|
(int64_t)sc->time_scale * s->streams[stream_index]->time_base.num,
|
|
(int64_t)s->streams[stream_index]->time_base.den);
|
|
start_time = 0; // FIXME use elst atom
|
|
sample = 1; // sample are 0 based in table
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Searching for sample_time %li \n", (long)sample_time);
|
|
#endif
|
|
for (i = 0; i < sc->stts_count; i++) {
|
|
count = sc->stts_data[i].count;
|
|
duration = sc->stts_data[i].duration;
|
|
//av_log(s, AV_LOG_DEBUG, "> sample_time %lli \n", (long)sample_time);
|
|
//av_log(s, AV_LOG_DEBUG, "> count=%i duration=%i\n", count, duration);
|
|
if ((start_time + count*duration) > sample_time) {
|
|
sample_to_time_time = start_time;
|
|
sample_to_time_index = i;
|
|
sample_to_time_sample = sample;
|
|
sample += (sample_time - start_time) / duration;
|
|
break;
|
|
}
|
|
sample += count;
|
|
start_time += count * duration;
|
|
}
|
|
sample_to_time_time = start_time;
|
|
sample_to_time_index = i;
|
|
/* NOTE: despite what qt doc say, the dt value (Display Time in qt vocabulary) computed with the stts atom
|
|
is a decoding time stamp (dts) not a presentation time stamp. And as usual dts != pts for stream with b frames */
|
|
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Found time %li at sample #%u\n", (long)sample_time, sample);
|
|
#endif
|
|
if (sample > sc->sample_count) {
|
|
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);
|
|
return -1;
|
|
}
|
|
|
|
// Step 3. Find the prior sync. sample using the Sync sample atom (stss)
|
|
if (sc->keyframes) {
|
|
a = 0;
|
|
b = sc->keyframe_count - 1;
|
|
while (a < b) {
|
|
m = (a + b + 1) >> 1;
|
|
if (sc->keyframes[m] > sample) {
|
|
b = m - 1;
|
|
} else {
|
|
a = m;
|
|
}
|
|
#ifdef DEBUG
|
|
// 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);
|
|
#endif
|
|
}
|
|
// for low latency prob: always use the previous keyframe, just uncomment the next line
|
|
// if (a) a--;
|
|
seek_sample = sc->keyframes[a];
|
|
}
|
|
else
|
|
seek_sample = sample; // else all samples are key frames
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Found nearest keyframe at sample #%i \n", seek_sample);
|
|
#endif
|
|
|
|
// Step 4. Find the chunk of the sample using the Sample-to-chunk-atom (stsc)
|
|
for (first_chunk_sample = 1, i = 0; i < (sc->sample_to_chunk_sz - 1); i++) {
|
|
b = (sc->sample_to_chunk[i + 1].first - sc->sample_to_chunk[i].first) * sc->sample_to_chunk[i].count;
|
|
if (seek_sample >= first_chunk_sample && seek_sample < (first_chunk_sample + b))
|
|
break;
|
|
first_chunk_sample += b;
|
|
}
|
|
chunk = sc->sample_to_chunk[i].first + (seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count;
|
|
left_in_chunk = sc->sample_to_chunk[i].count - (seek_sample - first_chunk_sample) % sc->sample_to_chunk[i].count;
|
|
first_chunk_sample += ((seek_sample - first_chunk_sample) / sc->sample_to_chunk[i].count) * sc->sample_to_chunk[i].count;
|
|
sample_to_chunk_idx = i;
|
|
#ifdef DEBUG
|
|
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);
|
|
#endif
|
|
|
|
// Step 5. Find the offset of the chunk using the chunk offset atom
|
|
if (!sc->chunk_offsets) {
|
|
av_log(s, AV_LOG_ERROR, "mov: no chunk offset atom, unable to seek\n");
|
|
return -1;
|
|
}
|
|
if (chunk > sc->chunk_count) {
|
|
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);
|
|
return -1;
|
|
}
|
|
chunk_file_offset = sc->chunk_offsets[chunk - 1];
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Chunk file offset is #%llu \n", chunk_file_offset);
|
|
#endif
|
|
|
|
// Step 6. Find the byte offset within the chunk using the sample size atom
|
|
sample_file_offset = chunk_file_offset;
|
|
if (sc->sample_size)
|
|
sample_file_offset += (seek_sample - first_chunk_sample) * sc->sample_size;
|
|
else {
|
|
for (i = 0; i < (seek_sample - first_chunk_sample); i++) {
|
|
sample_file_offset += sc->sample_sizes[first_chunk_sample + i - 1];
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
av_log(s, AV_LOG_DEBUG, "Sample file offset is #%llu \n", sample_file_offset);
|
|
#endif
|
|
|
|
// Step 6. Update the parser
|
|
mov->partial = sc;
|
|
mov->next_chunk_offset = sample_file_offset;
|
|
// Update current stream state
|
|
sc->current_sample = seek_sample - 1; // zero based
|
|
sc->left_in_chunk = left_in_chunk;
|
|
sc->next_chunk = chunk; // +1 -1 (zero based)
|
|
sc->sample_to_chunk_index = sample_to_chunk_idx;
|
|
|
|
// Update other streams
|
|
for (i = 0; i<mov->total_streams; i++) {
|
|
MOVStreamContext *msc;
|
|
if (i == mov_idx) continue;
|
|
// Find the nearest 'next' chunk
|
|
msc = mov->streams[i];
|
|
a = 0;
|
|
b = msc->chunk_count - 1;
|
|
while (a < b) {
|
|
m = (a + b + 1) >> 1;
|
|
if (msc->chunk_offsets[m] > chunk_file_offset) {
|
|
b = m - 1;
|
|
} else {
|
|
a = m;
|
|
}
|
|
#ifdef DEBUG
|
|
/* av_log(s, AV_LOG_DEBUG, "a=%i (%li) b=%i (%li) m=%i (%li) stream #%i\n"
|
|
, a, (long)msc->chunk_offsets[a], b, (long)msc->chunk_offsets[b], m, (long)msc->chunk_offsets[m], i); */
|
|
#endif
|
|
}
|
|
msc->next_chunk = a;
|
|
if (msc->chunk_offsets[a] < chunk_file_offset && a < (msc->chunk_count-1))
|
|
msc->next_chunk ++;
|
|
#ifdef DEBUG
|
|
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]);
|
|
#endif
|
|
// Compute sample count and index in the sample_to_chunk table (what a pity)
|
|
msc->sample_to_chunk_index = 0;
|
|
msc->current_sample = 0;
|
|
for(; msc->sample_to_chunk_index < (msc->sample_to_chunk_sz - 1)
|
|
&& msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first <= (1 + msc->next_chunk); msc->sample_to_chunk_index++) {
|
|
msc->current_sample += (msc->sample_to_chunk[msc->sample_to_chunk_index + 1].first - msc->sample_to_chunk[msc->sample_to_chunk_index].first) \
|
|
* msc->sample_to_chunk[msc->sample_to_chunk_index].count;
|
|
}
|
|
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;
|
|
msc->left_in_chunk = msc->sample_to_chunk[msc->sample_to_chunk_index].count - 1;
|
|
// Find corresponding position in stts (used later to compute dts)
|
|
sample = 0;
|
|
start_time = 0;
|
|
for (msc->sample_to_time_index = 0; msc->sample_to_time_index < msc->stts_count; msc->sample_to_time_index++) {
|
|
count = msc->stts_data[msc->sample_to_time_index].count;
|
|
duration = msc->stts_data[msc->sample_to_time_index].duration;
|
|
if ((sample + count - 1) > msc->current_sample) {
|
|
msc->sample_to_time_time = start_time;
|
|
msc->sample_to_time_sample = sample;
|
|
break;
|
|
}
|
|
sample += count;
|
|
start_time += count * duration;
|
|
}
|
|
sample = 0;
|
|
for (msc->sample_to_ctime_index = 0; msc->sample_to_ctime_index < msc->ctts_count; msc->sample_to_ctime_index++) {
|
|
count = msc->ctts_data[msc->sample_to_ctime_index].count;
|
|
duration = msc->ctts_data[msc->sample_to_ctime_index].duration;
|
|
if ((sample + count - 1) > msc->current_sample) {
|
|
msc->sample_to_ctime_sample = sample;
|
|
break;
|
|
}
|
|
sample += count;
|
|
}
|
|
#ifdef DEBUG
|
|
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);
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int mov_read_close(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
MOVContext *mov = (MOVContext *) s->priv_data;
|
|
for(i=0; i<mov->total_streams; i++)
|
|
mov_free_stream_context(mov->streams[i]);
|
|
/* free color tabs */
|
|
for(i=0; i<mov->ctab_size; i++)
|
|
av_freep(&mov->ctab[i]);
|
|
av_freep(&mov->ctab);
|
|
return 0;
|
|
}
|
|
|
|
static AVInputFormat mov_iformat = {
|
|
"mov,mp4,m4a,3gp,3g2",
|
|
"QuickTime/MPEG4 format",
|
|
sizeof(MOVContext),
|
|
mov_probe,
|
|
mov_read_header,
|
|
mov_read_packet,
|
|
mov_read_close,
|
|
#if defined(MOV_SPLIT_CHUNKS) && defined(MOV_SEEK)
|
|
mov_read_seek,
|
|
#endif
|
|
};
|
|
|
|
int mov_init(void)
|
|
{
|
|
av_register_input_format(&mov_iformat);
|
|
return 0;
|
|
}
|