1348 lines
44 KiB
C
1348 lines
44 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 "avformat.h"
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#include "avi.h"
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#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
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/*
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* First version by Francois Revol revol@free.fr
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*
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* Features and limitations:
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* - reads most of the QT files I have (at least the structure),
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* the exceptions are .mov with zlib compressed headers ('cmov' section). It shouldn't be hard to implement.
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* FIXED, Francois Revol, 07/17/2002
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* - ffmpeg has nearly none of the usual QuickTime codecs,
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* although I succesfully dumped raw and mp3 audio tracks off .mov files.
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* Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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* - .mp4 parsing is still hazardous, although the format really is QuickTime with some minor changes
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* (to make .mov parser crash maybe ?), despite what they say in the MPEG FAQ at
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* http://mpeg.telecomitalialab.com/faq.htm
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* - the code is quite ugly... maybe I won't do it recursive next time :-)
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*
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* Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
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* when coding this :) (it's a writer anyway)
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*
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* Reference documents:
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* http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
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* Apple:
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* http://developer.apple.com/techpubs/quicktime/qtdevdocs/QTFF/qtff.html
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* http://developer.apple.com/techpubs/quicktime/qtdevdocs/PDF/QTFileFormat.pdf
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* QuickTime is a trademark of Apple (AFAIK :))
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*/
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//#define DEBUG
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/* 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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#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, UINT32 type, UINT64 offset, UINT64 size)
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{
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unsigned int tag, i;
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tag = (unsigned int) 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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printf("|");
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printf("parse:");
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printf(" %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)offset,
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(unsigned int)size);
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}
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#endif
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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 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_JPEG, MKTAG('j', 'p', 'e', 'g') }, *//* JPEG */
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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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/* 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_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_MPEG4, MKTAG('m', 'p', '4', 'v') },
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{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/* { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
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{ CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
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{ CODEC_ID_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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{ 0, 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, 0x20776172 }, /* 8 bits unsigned */
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{ CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
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{ CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
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{ CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
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{ CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
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{ CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
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{ CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
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{ CODEC_ID_MP2, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
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{ CODEC_ID_MP2, 0x6D730055 }, /* MPEG layer 3 */
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{ CODEC_ID_MP2, 0x5500736D }, /* MPEG layer 3 *//* XXX: check endianness */
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/* { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
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/* MP4 tags */
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/* { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, *//* MPEG 4 AAC or audio ? */
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/* The standard for mpeg4 audio is still not normalised AFAIK anyway */
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{ 0, 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 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 *chunk_offsets;
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long sample_to_chunk_sz;
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MOV_sample_to_chunk_tbl *sample_to_chunk;
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long sample_to_chunk_index;
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long sample_size;
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long sample_count;
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long *sample_sizes;
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long time_scale;
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long current_sample;
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long left_in_chunk; /* how many samples before next chunk */
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/* specific MPEG4 header which is added at the beginning of the stream */
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int header_len;
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uint8_t *header_data;
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} 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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long time_scale;
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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 mdat_size;
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INT64 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 next_chunk_offset;
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int partial; /* != 0 : there is still to read in the current chunk (=id of the stream + 1) */
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} MOVContext;
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struct MOVParseTableEntry;
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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)(const struct MOVParseTableEntry *parse_table,
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ByteIOContext *pb,
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UINT32 atom_type,
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INT64 atom_offset, /* after the size and type field (and eventually the extended size) */
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INT64 atom_size, /* total size (excluding the size and type fields) */
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void *param);
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/* links atom IDs to parse functions */
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typedef struct MOVParseTableEntry {
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UINT32 type;
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mov_parse_function func;
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} MOVParseTableEntry;
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static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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#ifdef DEBUG
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print_atom("leaf", atom_type, atom_offset, atom_size);
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#endif
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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 parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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UINT32 type, foo=0;
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UINT64 offset, size;
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UINT64 total_size = 0;
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int i;
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int err = 0;
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foo=0;
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#ifdef DEBUG
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print_atom("default", atom_type, atom_offset, atom_size);
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debug_indent++;
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#endif
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offset = atom_offset;
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if(atom_size < 0)
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atom_size = 0x0FFFFFFFFFFFFFFF;
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while((total_size < atom_size) && !url_feof(pb) && !err) {
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size=atom_size;
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type=0L;
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if(atom_size >= 8) {
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size = get_be32(pb);
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type = get_le32(pb);
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}
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total_size += 8;
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offset+=8;
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// printf("type: %08lx sz: %08lx", type, size);
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if(size == 1) { /* 64 bit extended size */
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size = get_be64(pb);
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offset+=8;
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total_size+=8;
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size-=8;
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}
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if(size == 0)
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size = atom_size - total_size;
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size-=8;
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for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++);
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// printf(" i=%ld\n", i);
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if (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", type, offset, size);
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#endif
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url_fskip(pb, size);
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} else
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err = (parse_table[i].func)(parse_table, pb, type, offset, size, param);
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offset+=size;
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total_size+=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;
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}
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static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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MOVContext *c;
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#ifdef DEBUG
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print_atom("mvhd", atom_type, atom_offset, atom_size);
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#endif
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c = (MOVContext *)param;
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get_byte(pb); /* version */
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get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
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get_be32(pb); /* creation time */
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get_be32(pb); /* modification time */
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c->time_scale = get_be32(pb); /* time scale */
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#ifdef DEBUG
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printf("time scale = %li\n", c->time_scale);
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#endif
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get_be32(pb); /* duration */
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get_be32(pb); /* preferred scale */
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get_be16(pb); /* preferred volume */
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url_fskip(pb, 10); /* reserved */
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url_fskip(pb, 36); /* display matrix */
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get_be32(pb); /* preview time */
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get_be32(pb); /* preview duration */
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get_be32(pb); /* poster time */
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get_be32(pb); /* selection time */
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get_be32(pb); /* selection duration */
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get_be32(pb); /* current time */
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get_be32(pb); /* next track ID */
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return 0;
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}
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/* this atom should contain all header atoms */
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static int parse_moov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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int err;
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MOVContext *c;
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#ifdef DEBUG
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print_atom("moov", atom_type, atom_offset, atom_size);
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#endif
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c = (MOVContext *)param;
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err = parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
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/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
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/* so we don't parse the whole file if over a network */
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c->found_moov=1;
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if(c->found_mdat)
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return 1; /* found both, just go */
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return 0; /* now go for mdat */
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}
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/* this atom contains actual media data */
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static int parse_mdat(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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MOVContext *c;
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#ifdef DEBUG
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print_atom("mdat", atom_type, atom_offset, atom_size);
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#endif
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c = (MOVContext *)param;
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if(atom_size == 0) /* wrong one (MP4) */
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return 0;
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c->found_mdat=1;
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c->mdat_offset = atom_offset;
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c->mdat_size = atom_size;
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if(c->found_moov)
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return 1; /* found both, just go */
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url_fskip(pb, atom_size);
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return 0; /* now go for moov */
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}
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/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
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/* like the files created with Adobe Premiere 5.0, for samples see */
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/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
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static int parse_wide(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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int err;
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UINT32 type;
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#ifdef DEBUG
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print_atom("wide", atom_type, atom_offset, atom_size);
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debug_indent++;
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#endif
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if (atom_size < 8)
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return 0; /* continue */
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if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
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url_fskip(pb, atom_size - 4);
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return 0;
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}
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type = get_le32(pb);
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if (type != MKTAG('m', 'd', 'a', 't')) {
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url_fskip(pb, atom_size - 8);
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return 0;
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}
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err = parse_mdat(parse_table, pb, type, atom_offset + 8, atom_size - 8, param);
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#ifdef DEBUG
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debug_indent--;
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#endif
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return err;
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}
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static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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MOVContext *c;
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AVStream *st;
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MOVStreamContext *sc;
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#ifdef DEBUG
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print_atom("trak", atom_type, atom_offset, atom_size);
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#endif
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c = (MOVContext *)param;
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st = av_new_stream(c->fc, c->fc->nb_streams);
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if (!st) return -2;
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sc = av_malloc(sizeof(MOVStreamContext));
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sc->sample_to_chunk_index = -1;
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st->priv_data = sc;
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st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
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c->streams[c->fc->nb_streams-1] = sc;
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return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
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}
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static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
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{
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MOVContext *c;
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AVStream *st;
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#ifdef DEBUG
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print_atom("tkhd", atom_type, atom_offset, atom_size);
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#endif
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c = (MOVContext *)param;
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st = c->fc->streams[c->fc->nb_streams-1];
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get_byte(pb); /* version */
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get_byte(pb); get_byte(pb);
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get_byte(pb); /* flags */
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/*
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MOV_TRACK_ENABLED 0x0001
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MOV_TRACK_IN_MOVIE 0x0002
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MOV_TRACK_IN_PREVIEW 0x0004
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MOV_TRACK_IN_POSTER 0x0008
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*/
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get_be32(pb); /* creation time */
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get_be32(pb); /* modification time */
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st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
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get_be32(pb); /* reserved */
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get_be32(pb); /* duration */
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get_be32(pb); /* reserved */
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get_be32(pb); /* reserved */
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get_be16(pb); /* layer */
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get_be16(pb); /* alternate group */
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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;
|
|
}
|
|
|
|
static int parse_mdhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
AVStream *st;
|
|
#ifdef DEBUG
|
|
print_atom("mdhd", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
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->total_streams]->time_scale = get_be32(pb);
|
|
|
|
#ifdef DEBUG
|
|
printf("track[%i].time_scale = %li\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
|
|
#endif
|
|
get_be32(pb); /* duration */
|
|
|
|
get_be16(pb); /* language */
|
|
get_be16(pb); /* quality */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int len = 0;
|
|
char *buf;
|
|
UINT32 type;
|
|
AVStream *st;
|
|
UINT32 ctype;
|
|
#ifdef DEBUG
|
|
print_atom("hdlr", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
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
|
|
printf("ctype= %c%c%c%c (0x%08lx)\n", *((char *)&ctype), ((char *)&ctype)[1], ((char *)&ctype)[2], ((char *)&ctype)[3], (long) ctype);
|
|
printf("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 */
|
|
len = get_byte(pb);
|
|
buf = av_malloc(len+1);
|
|
get_buffer(pb, buf, len);
|
|
buf[len] = '\0';
|
|
#ifdef DEBUG
|
|
printf("**buf='%s'\n", buf);
|
|
#endif
|
|
av_free(buf);
|
|
}
|
|
#if 0
|
|
len = get_byte(pb);
|
|
/* XXX: use a better heuristic */
|
|
if(len < 32) {
|
|
/* assume that it is a Pascal like string */
|
|
buf = av_malloc(len+1);
|
|
get_buffer(pb, buf, len);
|
|
buf[len] = '\0';
|
|
#ifdef DEBUG
|
|
printf("**buf='%s'\n", buf);
|
|
#endif
|
|
av_free(buf);
|
|
} else {
|
|
/* MP4 string */
|
|
for(;;) {
|
|
if (len == 0)
|
|
break;
|
|
len = get_byte(pb);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mp4_read_descr_len(ByteIOContext *pb)
|
|
{
|
|
int c, len, count;
|
|
|
|
len = 0;
|
|
count = 0;
|
|
for(;;) {
|
|
c = get_byte(pb);
|
|
len = (len << 7) | (c & 0x7f);
|
|
if ((c & 0x80) == 0)
|
|
break;
|
|
if (++count == 4)
|
|
break;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static int mp4_read_descr(ByteIOContext *pb, int *tag)
|
|
{
|
|
int len;
|
|
*tag = get_byte(pb);
|
|
len = mp4_read_descr_len(pb);
|
|
#ifdef DEBUG
|
|
printf("MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
|
|
#endif
|
|
return len;
|
|
}
|
|
|
|
static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int entries, size, samp_sz, frames_per_sample, id;
|
|
UINT32 format;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
#ifdef DEBUG
|
|
print_atom("stsd", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = (MOVStreamContext *)st->priv_data;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
while(entries--) {
|
|
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
|
|
printf("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
|
|
if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
|
|
st->codec.codec_tag = format;
|
|
st->codec.codec_id = codec_get_id(mov_video_tags, format);
|
|
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); /* frame per samples */
|
|
#ifdef DEBUG
|
|
printf("frames/samples = %d\n", frames_per_sample);
|
|
#endif
|
|
url_fskip(pb, 32); /* codec name */
|
|
|
|
get_be16(pb); /* depth */
|
|
get_be16(pb); /* colortable id */
|
|
|
|
st->codec.frame_rate = 25 * FRAME_RATE_BASE;
|
|
|
|
size -= (16+8*4+2+32+2*2);
|
|
while (size >= 8) {
|
|
int atom_size, atom_type;
|
|
INT64 start_pos;
|
|
|
|
atom_size = get_be32(pb);
|
|
atom_type = get_le32(pb);
|
|
size -= 8;
|
|
#ifdef DEBUG
|
|
printf("VIDEO: atom_type=%c%c%c%c atom_size=%d size_left=%d\n",
|
|
(atom_type >> 0) & 0xff,
|
|
(atom_type >> 8) & 0xff,
|
|
(atom_type >> 16) & 0xff,
|
|
(atom_type >> 24) & 0xff,
|
|
atom_size, size);
|
|
#endif
|
|
start_pos = url_ftell(pb);
|
|
|
|
switch(atom_type) {
|
|
case MKTAG('e', 's', 'd', 's'):
|
|
{
|
|
int tag, len;
|
|
/* Well, broken but suffisant for some MP4 streams */
|
|
get_be32(pb); /* version + flags */
|
|
len = mp4_read_descr(pb, &tag);
|
|
if (tag == 0x03) {
|
|
/* MP4ESDescrTag */
|
|
get_be16(pb); /* ID */
|
|
get_byte(pb); /* priority */
|
|
len = 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 = mp4_read_descr(pb, &tag);
|
|
if (tag != 0x05)
|
|
goto fail;
|
|
/* MP4DecSpecificDescrTag */
|
|
#ifdef DEBUG
|
|
printf("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:
|
|
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 {
|
|
st->codec.codec_tag = format;
|
|
|
|
get_be16(pb); /* version */
|
|
get_be16(pb); /* revision level */
|
|
get_be32(pb); /* vendor */
|
|
|
|
st->codec.channels = get_be16(pb);/* channel count */
|
|
samp_sz = get_be16(pb); /* sample size */
|
|
#ifdef DEBUG
|
|
if(samp_sz != 16)
|
|
puts("!!! stsd: audio sample size is not 16 bit !");
|
|
#endif
|
|
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
|
|
/* handle specific s8 codec */
|
|
if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8)
|
|
st->codec.codec_id = CODEC_ID_PCM_S8;
|
|
|
|
get_be16(pb); /* compression id = 0*/
|
|
get_be16(pb); /* packet size = 0 */
|
|
|
|
st->codec.sample_rate = ((get_be32(pb) >> 16));
|
|
st->codec.bit_rate = 0;
|
|
#if 0
|
|
|
|
get_be16(pb); get_be16(pb); /* */
|
|
get_be16(pb); /* */
|
|
get_be16(pb); /* */
|
|
get_be16(pb); /* */
|
|
get_be16(pb); /* */
|
|
#endif
|
|
if(size > 16)
|
|
url_fskip(pb, size-(16+20));
|
|
}
|
|
}
|
|
/*
|
|
if(len) {
|
|
buf = av_malloc(len+1);
|
|
get_buffer(pb, buf, len);
|
|
buf[len] = '\0';
|
|
puts(buf);
|
|
av_free(buf);
|
|
}
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static int parse_stco(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int entries, i;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
#ifdef DEBUG
|
|
print_atom("stco", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = (MOVStreamContext *)st->priv_data;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
sc->chunk_count = entries;
|
|
sc->chunk_offsets = av_malloc(entries * sizeof(INT64));
|
|
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++) {
|
|
printf("chunk offset=0x%Lx\n", sc->chunk_offsets[i]);
|
|
}
|
|
*/
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int parse_stsc(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int entries, i;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
#ifdef DEBUG
|
|
print_atom("stsc", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = (MOVStreamContext *)st->priv_data;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
#ifdef DEBUG
|
|
printf("track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
#endif
|
|
sc->sample_to_chunk_sz = entries;
|
|
sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_sample_to_chunk_tbl));
|
|
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
|
|
/* printf("sample_to_chunk first=%ld count=%ld, id=%ld\n", sc->sample_to_chunk[i].first, sc->sample_to_chunk[i].count, sc->sample_to_chunk[i].id); */
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int parse_stsz(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int entries, i;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
#ifdef DEBUG
|
|
print_atom("stsz", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = (MOVStreamContext *)st->priv_data;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
sc->sample_size = get_be32(pb);
|
|
entries = get_be32(pb);
|
|
sc->sample_count = entries;
|
|
#ifdef DEBUG
|
|
printf("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 = av_malloc(entries * sizeof(long));
|
|
for(i=0; i<entries; i++) {
|
|
sc->sample_sizes[i] = get_be32(pb);
|
|
#ifdef DEBUG
|
|
/* printf("sample_sizes[]=%ld\n", sc->sample_sizes[i]); */
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int parse_stts(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
int entries, i;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
#ifdef DEBUG
|
|
print_atom("stts", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
st = c->fc->streams[c->fc->nb_streams-1];
|
|
sc = (MOVStreamContext *)st->priv_data;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
#ifdef DEBUG
|
|
printf("track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
#endif
|
|
for(i=0; i<entries; i++) {
|
|
int sample_duration;
|
|
|
|
get_be32(pb);
|
|
sample_duration = get_be32(pb);
|
|
|
|
if (!i && st->codec.codec_type==CODEC_TYPE_VIDEO) {
|
|
st->codec.frame_rate = FRAME_RATE_BASE * c->streams[c->total_streams]->time_scale;
|
|
if (sample_duration)
|
|
st->codec.frame_rate /= sample_duration;
|
|
#ifdef DEBUG
|
|
printf("VIDEO FRAME RATE= %i (sd= %i)\n", st->codec.frame_rate, sample_duration);
|
|
#endif
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_ZLIB
|
|
static int null_read_packet(void *opaque, UINT8 *buf, int buf_size)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static int parse_cmov(const MOVParseTableEntry *parse_table, ByteIOContext *pb, UINT32 atom_type, INT64 atom_offset, INT64 atom_size, void *param)
|
|
{
|
|
MOVContext *c;
|
|
ByteIOContext ctx;
|
|
char *cmov_data;
|
|
unsigned char *moov_data; /* uncompressed data */
|
|
long cmov_len, moov_len;
|
|
int ret;
|
|
#ifdef DEBUG
|
|
print_atom("cmov", atom_type, atom_offset, atom_size);
|
|
#endif
|
|
c = (MOVContext *)param;
|
|
|
|
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' )) {
|
|
puts("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 = av_malloc(cmov_len);
|
|
if (!cmov_data)
|
|
return -1;
|
|
moov_data = av_malloc(moov_len);
|
|
if (!moov_data) {
|
|
av_free(cmov_data);
|
|
return -1;
|
|
}
|
|
get_buffer(pb, cmov_data, cmov_len);
|
|
if(uncompress (moov_data, &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;
|
|
ret = parse_default(parse_table, &ctx, MKTAG( 'm', 'o', 'o', 'v' ), 0, moov_len, param);
|
|
av_free(moov_data);
|
|
av_free(cmov_data);
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = {
|
|
/* mp4 atoms */
|
|
{ MKTAG( 'm', 'p', '4', 'a' ), parse_default },
|
|
{ MKTAG( 'c', 'o', '6', '4' ), parse_stco },
|
|
{ MKTAG( 's', 't', 'c', 'o' ), parse_stco },
|
|
{ MKTAG( 'c', 'r', 'h', 'd' ), parse_default },
|
|
{ MKTAG( 'c', 't', 't', 's' ), parse_leaf },
|
|
{ MKTAG( 'c', 'p', 'r', 't' ), parse_default },
|
|
{ MKTAG( 'u', 'r', 'l', ' ' ), parse_leaf },
|
|
{ MKTAG( 'u', 'r', 'n', ' ' ), parse_leaf },
|
|
{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default },
|
|
{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf },
|
|
{ MKTAG( 's', 't', 'd', 'p' ), parse_default },
|
|
{ MKTAG( 'e', 's', 'd', 's' ), parse_default },
|
|
{ MKTAG( 'e', 'd', 't', 's' ), parse_default },
|
|
{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf },
|
|
{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default },
|
|
{ MKTAG( 'f', 'r', 'e', 'e' ), parse_leaf },
|
|
{ MKTAG( 'h', 'd', 'l', 'r' ), parse_hdlr },
|
|
{ MKTAG( 'h', 'm', 'h', 'd' ), parse_leaf },
|
|
{ MKTAG( 'h', 'i', 'n', 't' ), parse_leaf },
|
|
{ MKTAG( 'n', 'm', 'h', 'd' ), parse_leaf },
|
|
{ MKTAG( 'm', 'p', '4', 's' ), parse_default },
|
|
{ MKTAG( 'm', 'd', 'i', 'a' ), parse_default },
|
|
{ MKTAG( 'm', 'd', 'a', 't' ), parse_mdat },
|
|
{ MKTAG( 'm', 'd', 'h', 'd' ), parse_mdhd },
|
|
{ MKTAG( 'm', 'i', 'n', 'f' ), parse_default },
|
|
{ MKTAG( 'm', 'o', 'o', 'v' ), parse_moov },
|
|
{ MKTAG( 'm', 'v', 'h', 'd' ), parse_mvhd },
|
|
{ MKTAG( 'i', 'o', 'd', 's' ), parse_leaf },
|
|
{ MKTAG( 'o', 'd', 'h', 'd' ), parse_default },
|
|
{ MKTAG( 'm', 'p', 'o', 'd' ), parse_leaf },
|
|
{ MKTAG( 's', 't', 's', 'd' ), parse_stsd },
|
|
{ MKTAG( 's', 't', 's', 'z' ), parse_stsz },
|
|
{ MKTAG( 's', 't', 'b', 'l' ), parse_default },
|
|
{ MKTAG( 's', 't', 's', 'c' ), parse_stsc },
|
|
{ MKTAG( 's', 'd', 'h', 'd' ), parse_default },
|
|
{ MKTAG( 's', 't', 's', 'h' ), parse_default },
|
|
{ MKTAG( 's', 'k', 'i', 'p' ), parse_default },
|
|
{ MKTAG( 's', 'm', 'h', 'd' ), parse_leaf },
|
|
{ MKTAG( 'd', 'p', 'n', 'd' ), parse_leaf },
|
|
{ MKTAG( 's', 't', 's', 's' ), parse_leaf },
|
|
{ MKTAG( 's', 't', 't', 's' ), parse_stts },
|
|
{ MKTAG( 't', 'r', 'a', 'k' ), parse_trak },
|
|
{ MKTAG( 't', 'k', 'h', 'd' ), parse_tkhd },
|
|
{ MKTAG( 't', 'r', 'e', 'f' ), parse_default }, /* not really */
|
|
{ MKTAG( 'u', 'd', 't', 'a' ), parse_leaf },
|
|
{ MKTAG( 'v', 'm', 'h', 'd' ), parse_leaf },
|
|
{ MKTAG( 'm', 'p', '4', 'v' ), parse_default },
|
|
/* extra mp4 */
|
|
{ MKTAG( 'M', 'D', 'E', 'S' ), parse_leaf },
|
|
/* QT atoms */
|
|
{ MKTAG( 'c', 'h', 'a', 'p' ), parse_leaf },
|
|
{ MKTAG( 'c', 'l', 'i', 'p' ), parse_default },
|
|
{ MKTAG( 'c', 'r', 'g', 'n' ), parse_leaf },
|
|
{ MKTAG( 'k', 'm', 'a', 't' ), parse_leaf },
|
|
{ MKTAG( 'm', 'a', 't', 't' ), parse_default },
|
|
{ MKTAG( 'r', 'd', 'r', 'f' ), parse_leaf },
|
|
{ MKTAG( 'r', 'm', 'd', 'a' ), parse_default },
|
|
{ MKTAG( 'r', 'm', 'd', 'r' ), parse_leaf },
|
|
//{ MKTAG( 'r', 'm', 'q', 'u' ), parse_leaf },
|
|
{ MKTAG( 'r', 'm', 'r', 'a' ), parse_default },
|
|
{ MKTAG( 's', 'c', 'p', 't' ), parse_leaf },
|
|
{ MKTAG( 's', 'y', 'n', 'c' ), parse_leaf },
|
|
{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf },
|
|
{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf },
|
|
{ MKTAG( 'w', 'i', 'd', 'e' ), parse_wide }, /* place holder */
|
|
#ifdef CONFIG_ZLIB
|
|
{ MKTAG( 'c', 'm', 'o', 'v' ), parse_cmov },
|
|
#else
|
|
{ MKTAG( 'c', 'm', 'o', 'v' ), parse_leaf },
|
|
#endif
|
|
{ 0L, parse_leaf }
|
|
};
|
|
|
|
static void mov_free_stream_context(MOVStreamContext *sc)
|
|
{
|
|
if(sc) {
|
|
av_free(sc->chunk_offsets);
|
|
av_free(sc->sample_to_chunk);
|
|
av_free(sc->header_data);
|
|
av_free(sc);
|
|
}
|
|
}
|
|
|
|
static uint32_t to_tag(uint8_t *buf)
|
|
{
|
|
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
|
|
}
|
|
|
|
static uint32_t to_be32(uint8_t *buf)
|
|
{
|
|
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
|
|
}
|
|
|
|
/* XXX: is it suffisant ? */
|
|
static int mov_probe(AVProbeData *p)
|
|
{
|
|
unsigned int offset;
|
|
uint32_t tag;
|
|
|
|
/* 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 0;
|
|
tag = to_tag(p->buf + offset + 4);
|
|
switch(tag) {
|
|
case MKTAG( 'm', 'o', 'o', 'v' ):
|
|
case MKTAG( 'w', 'i', 'd', 'e' ):
|
|
case MKTAG( 'f', 'r', 'e', 'e' ):
|
|
case MKTAG( 'm', 'd', 'a', 't'):
|
|
return AVPROBE_SCORE_MAX;
|
|
case MKTAG( 'f', 't', 'y', 'p' ):
|
|
case MKTAG( 's', 'k', 'i', 'p' ):
|
|
offset = to_be32(p->buf) + offset;
|
|
break;
|
|
default:
|
|
/* unrecognized tag */
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
ByteIOContext *pb = &s->pb;
|
|
int i, j, nb, err;
|
|
INT64 size;
|
|
|
|
mov->fc = s;
|
|
#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) */
|
|
size = url_filesize(url_fileno(pb));
|
|
else
|
|
size = 0x7FFFFFFFFFFFFFFF;
|
|
|
|
#ifdef DEBUG
|
|
printf("filesz=%Ld\n", size);
|
|
#endif
|
|
|
|
/* check MOV header */
|
|
err = parse_default(mov_default_parse_table, pb, 0L, 0LL, size, mov);
|
|
if(err<0 || (!mov->found_moov || !mov->found_mdat)) {
|
|
puts("header not found !!!");
|
|
exit(1);
|
|
}
|
|
#ifdef DEBUG
|
|
printf("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
|
|
printf("mdat_reset_offset=%d\n", (int) url_ftell(pb));
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
printf("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
|
|
printf("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 = s->priv_data;
|
|
MOVStreamContext *sc;
|
|
INT64 offset = 0x0FFFFFFFFFFFFFFF;
|
|
int i;
|
|
int st_id = 0, size;
|
|
size = 0x0FFFFFFF;
|
|
|
|
#ifdef MOV_SPLIT_CHUNKS
|
|
if (mov->partial) {
|
|
|
|
int idx;
|
|
|
|
st_id = mov->partial - 1;
|
|
idx = mov->streams[st_id]->sample_to_chunk_index;
|
|
if (idx < 0) return 0;
|
|
size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
|
|
|
|
mov->streams[st_id]->current_sample++;
|
|
mov->streams[st_id]->left_in_chunk--;
|
|
|
|
if(mov->streams[st_id]->left_in_chunk <= 0)
|
|
mov->partial = 0;
|
|
offset = mov->next_chunk_offset;
|
|
/* extract the sample */
|
|
|
|
goto readchunk;
|
|
}
|
|
#endif
|
|
|
|
again:
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
|
|
&& (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) {
|
|
st_id = i;
|
|
offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk];
|
|
}
|
|
}
|
|
mov->streams[st_id]->next_chunk++;
|
|
if(offset==0x0FFFFFFFFFFFFFFF)
|
|
return -1;
|
|
|
|
if(mov->next_chunk_offset < offset) { /* some meta data */
|
|
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
|
|
mov->next_chunk_offset = offset;
|
|
}
|
|
|
|
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
|
|
if(!mov->streams[st_id]->is_ff_stream) {
|
|
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
|
|
mov->next_chunk_offset = offset;
|
|
offset = 0x0FFFFFFFFFFFFFFF;
|
|
goto again;
|
|
}
|
|
|
|
/* now get the chunk size... */
|
|
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
|
|
&& ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) {
|
|
size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset;
|
|
}
|
|
}
|
|
#ifdef MOV_SPLIT_CHUNKS
|
|
/* split chunks into samples */
|
|
if(mov->streams[st_id]->sample_size == 0) {
|
|
int idx;
|
|
idx = mov->streams[st_id]->sample_to_chunk_index;
|
|
if ((idx + 1 < mov->streams[st_id]->sample_to_chunk_sz)
|
|
&& (mov->streams[st_id]->next_chunk >= mov->streams[st_id]->sample_to_chunk[idx + 1].first))
|
|
idx++;
|
|
mov->streams[st_id]->sample_to_chunk_index = idx;
|
|
if(idx >= 0 && mov->streams[st_id]->sample_to_chunk[idx].count != 1) {
|
|
mov->partial = st_id+1;
|
|
/* we'll have to get those samples before next chunk */
|
|
mov->streams[st_id]->left_in_chunk = (mov->streams[st_id]->sample_to_chunk[idx].count) - 1;
|
|
size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
|
|
}
|
|
|
|
mov->streams[st_id]->current_sample++;
|
|
}
|
|
#endif
|
|
|
|
readchunk:
|
|
//printf("chunk: [%i] %lli -> %lli (%i)\n", st_id, offset, offset + size, size);
|
|
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);
|
|
sc = mov->streams[st_id];
|
|
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;
|
|
|
|
#ifdef DEBUG
|
|
/*
|
|
printf("Packet (%d, %d, %ld) ", pkt->stream_index, st_id, pkt->size);
|
|
for(i=0; i<8; i++)
|
|
printf("%02x ", pkt->data[i]);
|
|
for(i=0; i<8; i++)
|
|
printf("%c ", (pkt->data[i]) & 0x7F);
|
|
puts("");
|
|
*/
|
|
#endif
|
|
|
|
mov->next_chunk_offset = offset + size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_close(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
MOVContext *mov = s->priv_data;
|
|
for(i=0; i<mov->total_streams; i++)
|
|
mov_free_stream_context(mov->streams[i]);
|
|
for(i=0; i<s->nb_streams; i++)
|
|
av_freep(&s->streams[i]);
|
|
return 0;
|
|
}
|
|
|
|
static AVInputFormat mov_iformat = {
|
|
"mov",
|
|
"QuickTime/MPEG4 format",
|
|
sizeof(MOVContext),
|
|
mov_probe,
|
|
mov_read_header,
|
|
mov_read_packet,
|
|
mov_read_close,
|
|
};
|
|
|
|
int mov_init(void)
|
|
{
|
|
av_register_input_format(&mov_iformat);
|
|
return 0;
|
|
}
|