ffmpeg / libavformat / mov.c @ 8e2fd8e1
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/*
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* MOV demuxer
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* Copyright (c) 2001 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <limits.h> |
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//#define DEBUG
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#include "libavutil/intreadwrite.h" |
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#include "avformat.h" |
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#include "riff.h" |
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#include "isom.h" |
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#include "dv.h" |
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#include "libavcodec/mpeg4audio.h" |
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#include "libavcodec/mpegaudiodata.h" |
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#if 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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* Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
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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/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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#include "qtpalette.h" |
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#undef NDEBUG
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#include <assert.h> |
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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 { |
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int first;
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int count;
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int id;
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} MOVStsc; |
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typedef struct { |
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uint32_t type; |
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char *path;
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} MOVDref; |
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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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} MOVAtom; |
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struct MOVParseTableEntry;
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typedef struct { |
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unsigned track_id;
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uint64_t base_data_offset; |
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uint64_t moof_offset; |
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unsigned stsd_id;
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unsigned duration;
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unsigned size;
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unsigned flags;
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} MOVFragment; |
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typedef struct { |
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unsigned track_id;
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unsigned stsd_id;
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unsigned duration;
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unsigned size;
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unsigned flags;
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} MOVTrackExt; |
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typedef struct MOVStreamContext { |
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ByteIOContext *pb; |
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int ffindex; /* the ffmpeg stream id */ |
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int next_chunk;
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unsigned int chunk_count; |
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int64_t *chunk_offsets; |
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unsigned int stts_count; |
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MOVStts *stts_data; |
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unsigned int ctts_count; |
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MOVStts *ctts_data; |
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unsigned int edit_count; /* number of 'edit' (elst atom) */ |
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unsigned int sample_to_chunk_sz; |
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MOVStsc *sample_to_chunk; |
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int sample_to_ctime_index;
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int sample_to_ctime_sample;
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unsigned int sample_size; |
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unsigned int sample_count; |
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int *sample_sizes;
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unsigned int keyframe_count; |
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int *keyframes;
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int time_scale;
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int time_rate;
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int time_offset; /// time offset of the first edit list entry |
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int current_sample;
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unsigned int bytes_per_frame; |
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unsigned int samples_per_frame; |
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int dv_audio_container;
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int pseudo_stream_id; ///< -1 means demux all ids |
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int16_t audio_cid; ///< stsd audio compression id
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unsigned drefs_count;
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MOVDref *drefs; |
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int dref_id;
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int wrong_dts; ///< dts are wrong due to negative ctts |
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int width; ///< tkhd width |
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int height; ///< tkhd height |
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} MOVStreamContext; |
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typedef struct MOVContext { |
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AVFormatContext *fc; |
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int time_scale;
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int64_t 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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AVPaletteControl palette_control; |
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DVDemuxContext *dv_demux; |
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AVFormatContext *dv_fctx; |
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int isom; /* 1 if file is ISO Media (mp4/3gp) */ |
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MOVFragment fragment; ///< current fragment in moof atom
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MOVTrackExt *trex_data; |
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unsigned trex_count;
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int itunes_metadata; ///< metadata are itunes style |
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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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0: continue to parse next atom
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<0: error occurred, exit
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*/
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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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int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom);
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} MOVParseTableEntry; |
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static const MOVParseTableEntry mov_default_parse_table[]; |
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static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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int64_t total_size = 0;
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MOVAtom a; |
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int i;
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int err = 0; |
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a.offset = atom.offset; |
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if (atom.size < 0) |
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atom.size = INT64_MAX; |
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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=0;
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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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dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", |
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a.type, (char*)&a.type, a.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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a.size -= 8;
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if(a.size < 0) |
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break;
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a.size = FFMIN(a.size, atom.size - total_size); |
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for (i = 0; mov_default_parse_table[i].type != 0 |
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&& mov_default_parse_table[i].type != a.type; i++) |
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/* empty */;
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if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */ |
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url_fskip(pb, a.size); |
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} else {
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int64_t start_pos = url_ftell(pb); |
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int64_t left; |
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err = mov_default_parse_table[i].parse(c, pb, a); |
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if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
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break;
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left = a.size - url_ftell(pb) + start_pos; |
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if (left > 0) /* skip garbage at atom end */ |
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url_fskip(pb, left); |
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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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url_fskip(pb, atom.size - total_size); |
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return err;
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} |
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static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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MOVStreamContext *sc = st->priv_data; |
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int entries, i, j;
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get_be32(pb); // version + flags
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entries = get_be32(pb); |
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if (entries >= UINT_MAX / sizeof(*sc->drefs)) |
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return -1; |
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sc->drefs_count = entries; |
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sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
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for (i = 0; i < sc->drefs_count; i++) { |
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MOVDref *dref = &sc->drefs[i]; |
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uint32_t size = get_be32(pb); |
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int64_t next = url_ftell(pb) + size - 4;
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dref->type = get_le32(pb); |
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get_be32(pb); // version + flags
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dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size); |
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if (dref->type == MKTAG('a','l','i','s') && size > 150) { |
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/* macintosh alias record */
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uint16_t volume_len, len; |
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char volume[28]; |
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int16_t type; |
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url_fskip(pb, 10);
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volume_len = get_byte(pb); |
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volume_len = FFMIN(volume_len, 27);
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get_buffer(pb, volume, 27);
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volume[volume_len] = 0;
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av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
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url_fskip(pb, 112);
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for (type = 0; type != -1 && url_ftell(pb) < next; ) { |
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type = get_be16(pb); |
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len = get_be16(pb); |
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av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
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if (len&1) |
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len += 1;
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if (type == 2) { // absolute path |
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av_free(dref->path); |
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dref->path = av_mallocz(len+1);
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if (!dref->path)
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return AVERROR(ENOMEM);
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get_buffer(pb, dref->path, len); |
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if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
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len -= volume_len; |
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memmove(dref->path, dref->path+volume_len, len); |
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dref->path[len] = 0;
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} |
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for (j = 0; j < len; j++) |
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if (dref->path[j] == ':') |
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dref->path[j] = '/';
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av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
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} else
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url_fskip(pb, len); |
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} |
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} |
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url_fseek(pb, next, SEEK_SET); |
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} |
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return 0; |
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} |
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static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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uint32_t type; |
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uint32_t ctype; |
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get_byte(pb); /* version */
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get_be24(pb); /* flags */
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/* component type */
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ctype = get_le32(pb); |
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type = get_le32(pb); /* component subtype */
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dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1], |
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((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype); |
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dprintf(c->fc, "stype= %c%c%c%c\n",
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*((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]); |
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if(!ctype)
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c->isom = 1;
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if (type == MKTAG('v','i','d','e')) |
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st->codec->codec_type = CODEC_TYPE_VIDEO; |
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else if(type == MKTAG('s','o','u','n')) |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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else if(type == MKTAG('m','1','a',' ')) |
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st->codec->codec_id = CODEC_ID_MP2; |
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else if(type == MKTAG('s','u','b','p')) { |
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st->codec->codec_type = CODEC_TYPE_SUBTITLE; |
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} |
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get_be32(pb); /* component manufacture */
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get_be32(pb); /* component flags */
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get_be32(pb); /* component flags mask */
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if(atom.size <= 24) |
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return 0; /* nothing left to read */ |
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url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset)); |
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return 0; |
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} |
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static int mp4_read_descr_len(ByteIOContext *pb) |
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{ |
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int len = 0; |
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int count = 4; |
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while (count--) {
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int c = get_byte(pb);
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len = (len << 7) | (c & 0x7f); |
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if (!(c & 0x80)) |
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break;
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} |
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return len;
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} |
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static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag) |
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{ |
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int len;
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*tag = get_byte(pb); |
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len = mp4_read_descr_len(pb); |
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dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
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return len;
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} |
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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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static const AVCodecTag mp4_audio_types[] = { |
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{ CODEC_ID_MP3ON4, 29 }, /* old mp3on4 draft */ |
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{ CODEC_ID_MP3ON4, 32 }, /* layer 1 */ |
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{ CODEC_ID_MP3ON4, 33 }, /* layer 2 */ |
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{ CODEC_ID_MP3ON4, 34 }, /* layer 3 */ |
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{ CODEC_ID_NONE, 0 },
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}; |
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static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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int tag, len;
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get_be32(pb); /* version + flags */
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len = mp4_read_descr(c, pb, &tag); |
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if (tag == MP4ESDescrTag) {
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get_be16(pb); /* ID */
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get_byte(pb); /* priority */
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} else
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get_be16(pb); /* ID */
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len = mp4_read_descr(c, pb, &tag); |
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if (tag == MP4DecConfigDescrTag) {
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int object_type_id = get_byte(pb);
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get_byte(pb); /* stream type */
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get_be24(pb); /* buffer size db */
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get_be32(pb); /* max bitrate */
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get_be32(pb); /* avg bitrate */
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st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id); |
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dprintf(c->fc, "esds object type id %d\n", object_type_id);
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len = mp4_read_descr(c, pb, &tag); |
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if (tag == MP4DecSpecificDescrTag) {
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dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
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if((uint64_t)len > (1<<30)) |
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return -1; |
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st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE); |
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if (!st->codec->extradata)
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return AVERROR(ENOMEM);
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get_buffer(pb, st->codec->extradata, len); |
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st->codec->extradata_size = len; |
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if (st->codec->codec_id == CODEC_ID_AAC) {
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MPEG4AudioConfig cfg; |
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ff_mpeg4audio_get_config(&cfg, st->codec->extradata, |
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st->codec->extradata_size); |
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if (cfg.chan_config > 7) |
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return -1; |
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st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config]; |
420 |
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4 |
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st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index]; |
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else
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st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
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dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
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"sample rate %d ext sample rate %d\n", st->codec->channels,
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cfg.object_type, cfg.ext_object_type, |
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cfg.sample_rate, cfg.ext_sample_rate); |
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if (!(st->codec->codec_id = codec_get_id(mp4_audio_types,
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cfg.object_type))) |
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st->codec->codec_id = CODEC_ID_AAC; |
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} |
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} |
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} |
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return 0; |
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} |
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|
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static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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const int num = get_be32(pb); |
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const int den = get_be32(pb); |
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AVStream * const st = c->fc->streams[c->fc->nb_streams-1]; |
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if (den != 0) { |
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if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default |
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(den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num)) |
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av_log(c->fc, AV_LOG_WARNING, |
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"sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
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st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); |
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st->sample_aspect_ratio.num = num; |
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st->sample_aspect_ratio.den = den; |
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} |
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return 0; |
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} |
453 |
|
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/* this atom contains actual media data */
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static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
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{ |
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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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return 0; /* now go for moov */ |
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} |
462 |
|
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static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
464 |
{ |
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uint32_t type = get_le32(pb); |
466 |
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if (type != MKTAG('q','t',' ',' ')) |
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c->isom = 1;
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av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type); |
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get_be32(pb); /* minor version */
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url_fskip(pb, atom.size - 8);
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return 0; |
473 |
} |
474 |
|
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/* this atom should contain all header atoms */
|
476 |
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
477 |
{ |
478 |
if (mov_read_default(c, pb, atom) < 0) |
479 |
return -1; |
480 |
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
|
481 |
/* so we don't parse the whole file if over a network */
|
482 |
c->found_moov=1;
|
483 |
return 0; /* now go for mdat */ |
484 |
} |
485 |
|
486 |
static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
487 |
{ |
488 |
c->fragment.moof_offset = url_ftell(pb) - 8;
|
489 |
dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
|
490 |
return mov_read_default(c, pb, atom);
|
491 |
} |
492 |
|
493 |
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
494 |
{ |
495 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
496 |
MOVStreamContext *sc = st->priv_data; |
497 |
int version = get_byte(pb);
|
498 |
unsigned lang;
|
499 |
|
500 |
if (version > 1) |
501 |
return -1; /* unsupported */ |
502 |
|
503 |
get_be24(pb); /* flags */
|
504 |
if (version == 1) { |
505 |
get_be64(pb); |
506 |
get_be64(pb); |
507 |
} else {
|
508 |
get_be32(pb); /* creation time */
|
509 |
get_be32(pb); /* modification time */
|
510 |
} |
511 |
|
512 |
sc->time_scale = get_be32(pb); |
513 |
st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ |
514 |
|
515 |
lang = get_be16(pb); /* language */
|
516 |
ff_mov_lang_to_iso639(lang, st->language); |
517 |
get_be16(pb); /* quality */
|
518 |
|
519 |
return 0; |
520 |
} |
521 |
|
522 |
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
523 |
{ |
524 |
int version = get_byte(pb); /* version */ |
525 |
get_be24(pb); /* flags */
|
526 |
|
527 |
if (version == 1) { |
528 |
get_be64(pb); |
529 |
get_be64(pb); |
530 |
} else {
|
531 |
get_be32(pb); /* creation time */
|
532 |
get_be32(pb); /* modification time */
|
533 |
} |
534 |
c->time_scale = get_be32(pb); /* time scale */
|
535 |
|
536 |
dprintf(c->fc, "time scale = %i\n", c->time_scale);
|
537 |
|
538 |
c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */ |
539 |
get_be32(pb); /* preferred scale */
|
540 |
|
541 |
get_be16(pb); /* preferred volume */
|
542 |
|
543 |
url_fskip(pb, 10); /* reserved */ |
544 |
|
545 |
url_fskip(pb, 36); /* display matrix */ |
546 |
|
547 |
get_be32(pb); /* preview time */
|
548 |
get_be32(pb); /* preview duration */
|
549 |
get_be32(pb); /* poster time */
|
550 |
get_be32(pb); /* selection time */
|
551 |
get_be32(pb); /* selection duration */
|
552 |
get_be32(pb); /* current time */
|
553 |
get_be32(pb); /* next track ID */
|
554 |
|
555 |
return 0; |
556 |
} |
557 |
|
558 |
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
559 |
{ |
560 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
561 |
|
562 |
if((uint64_t)atom.size > (1<<30)) |
563 |
return -1; |
564 |
|
565 |
// currently SVQ3 decoder expect full STSD header - so let's fake it
|
566 |
// this should be fixed and just SMI header should be passed
|
567 |
av_free(st->codec->extradata); |
568 |
st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
|
569 |
if (!st->codec->extradata)
|
570 |
return AVERROR(ENOMEM);
|
571 |
st->codec->extradata_size = 0x5a + atom.size;
|
572 |
memcpy(st->codec->extradata, "SVQ3", 4); // fake |
573 |
get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
|
574 |
dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a); |
575 |
return 0; |
576 |
} |
577 |
|
578 |
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
579 |
{ |
580 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
581 |
int little_endian = get_be16(pb);
|
582 |
|
583 |
dprintf(c->fc, "enda %d\n", little_endian);
|
584 |
if (little_endian == 1) { |
585 |
switch (st->codec->codec_id) {
|
586 |
case CODEC_ID_PCM_S24BE:
|
587 |
st->codec->codec_id = CODEC_ID_PCM_S24LE; |
588 |
break;
|
589 |
case CODEC_ID_PCM_S32BE:
|
590 |
st->codec->codec_id = CODEC_ID_PCM_S32LE; |
591 |
break;
|
592 |
case CODEC_ID_PCM_F32BE:
|
593 |
st->codec->codec_id = CODEC_ID_PCM_F32LE; |
594 |
break;
|
595 |
case CODEC_ID_PCM_F64BE:
|
596 |
st->codec->codec_id = CODEC_ID_PCM_F64LE; |
597 |
break;
|
598 |
default:
|
599 |
break;
|
600 |
} |
601 |
} |
602 |
return 0; |
603 |
} |
604 |
|
605 |
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
|
606 |
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
607 |
{ |
608 |
AVStream *st; |
609 |
uint64_t size; |
610 |
uint8_t *buf; |
611 |
|
612 |
if (c->fc->nb_streams < 1) // will happen with jp2 files |
613 |
return 0; |
614 |
st= c->fc->streams[c->fc->nb_streams-1];
|
615 |
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
|
616 |
if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
|
617 |
return -1; |
618 |
buf= av_realloc(st->codec->extradata, size); |
619 |
if(!buf)
|
620 |
return -1; |
621 |
st->codec->extradata= buf; |
622 |
buf+= st->codec->extradata_size; |
623 |
st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE; |
624 |
AV_WB32( buf , atom.size + 8);
|
625 |
AV_WL32( buf + 4, atom.type);
|
626 |
get_buffer(pb, buf + 8, atom.size);
|
627 |
return 0; |
628 |
} |
629 |
|
630 |
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
631 |
{ |
632 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
633 |
|
634 |
if((uint64_t)atom.size > (1<<30)) |
635 |
return -1; |
636 |
|
637 |
if (st->codec->codec_id == CODEC_ID_QDM2) {
|
638 |
// pass all frma atom to codec, needed at least for QDM2
|
639 |
av_free(st->codec->extradata); |
640 |
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); |
641 |
if (!st->codec->extradata)
|
642 |
return AVERROR(ENOMEM);
|
643 |
st->codec->extradata_size = atom.size; |
644 |
get_buffer(pb, st->codec->extradata, atom.size); |
645 |
} else if (atom.size > 8) { /* to read frma, esds atoms */ |
646 |
if (mov_read_default(c, pb, atom) < 0) |
647 |
return -1; |
648 |
} else
|
649 |
url_fskip(pb, atom.size); |
650 |
return 0; |
651 |
} |
652 |
|
653 |
/**
|
654 |
* This function reads atom content and puts data in extradata without tag
|
655 |
* nor size unlike mov_read_extradata.
|
656 |
*/
|
657 |
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
658 |
{ |
659 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
660 |
|
661 |
if((uint64_t)atom.size > (1<<30)) |
662 |
return -1; |
663 |
|
664 |
av_free(st->codec->extradata); |
665 |
st->codec->extradata = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE); |
666 |
if (!st->codec->extradata)
|
667 |
return AVERROR(ENOMEM);
|
668 |
st->codec->extradata_size = atom.size; |
669 |
get_buffer(pb, st->codec->extradata, atom.size); |
670 |
return 0; |
671 |
} |
672 |
|
673 |
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
674 |
{ |
675 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
676 |
MOVStreamContext *sc = st->priv_data; |
677 |
unsigned int i, entries; |
678 |
|
679 |
get_byte(pb); /* version */
|
680 |
get_be24(pb); /* flags */
|
681 |
|
682 |
entries = get_be32(pb); |
683 |
|
684 |
if(entries >= UINT_MAX/sizeof(int64_t)) |
685 |
return -1; |
686 |
|
687 |
sc->chunk_count = entries; |
688 |
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
|
689 |
if (!sc->chunk_offsets)
|
690 |
return -1; |
691 |
if (atom.type == MKTAG('s','t','c','o')) |
692 |
for(i=0; i<entries; i++) |
693 |
sc->chunk_offsets[i] = get_be32(pb); |
694 |
else if (atom.type == MKTAG('c','o','6','4')) |
695 |
for(i=0; i<entries; i++) |
696 |
sc->chunk_offsets[i] = get_be64(pb); |
697 |
else
|
698 |
return -1; |
699 |
|
700 |
return 0; |
701 |
} |
702 |
|
703 |
/**
|
704 |
* Compute codec id for 'lpcm' tag.
|
705 |
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
|
706 |
*/
|
707 |
static enum CodecID mov_get_lpcm_codec_id(int bps, int flags) |
708 |
{ |
709 |
if (flags & 1) { // floating point |
710 |
if (flags & 2) { // big endian |
711 |
if (bps == 32) return CODEC_ID_PCM_F32BE; |
712 |
else if (bps == 64) return CODEC_ID_PCM_F64BE; |
713 |
} else {
|
714 |
if (bps == 32) return CODEC_ID_PCM_F32LE; |
715 |
else if (bps == 64) return CODEC_ID_PCM_F64LE; |
716 |
} |
717 |
} else {
|
718 |
if (flags & 2) { |
719 |
if (bps == 8) |
720 |
// signed integer
|
721 |
if (flags & 4) return CODEC_ID_PCM_S8; |
722 |
else return CODEC_ID_PCM_U8; |
723 |
else if (bps == 16) return CODEC_ID_PCM_S16BE; |
724 |
else if (bps == 24) return CODEC_ID_PCM_S24BE; |
725 |
else if (bps == 32) return CODEC_ID_PCM_S32BE; |
726 |
} else {
|
727 |
if (bps == 8) |
728 |
if (flags & 4) return CODEC_ID_PCM_S8; |
729 |
else return CODEC_ID_PCM_U8; |
730 |
else if (bps == 16) return CODEC_ID_PCM_S16LE; |
731 |
else if (bps == 24) return CODEC_ID_PCM_S24LE; |
732 |
else if (bps == 32) return CODEC_ID_PCM_S32LE; |
733 |
} |
734 |
} |
735 |
return CODEC_ID_NONE;
|
736 |
} |
737 |
|
738 |
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
739 |
{ |
740 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
741 |
MOVStreamContext *sc = st->priv_data; |
742 |
int j, entries, pseudo_stream_id;
|
743 |
|
744 |
get_byte(pb); /* version */
|
745 |
get_be24(pb); /* flags */
|
746 |
|
747 |
entries = get_be32(pb); |
748 |
|
749 |
for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) { |
750 |
//Parsing Sample description table
|
751 |
enum CodecID id;
|
752 |
int dref_id;
|
753 |
MOVAtom a = { 0, 0, 0 }; |
754 |
int64_t start_pos = url_ftell(pb); |
755 |
int size = get_be32(pb); /* size */ |
756 |
uint32_t format = get_le32(pb); /* data format */
|
757 |
|
758 |
get_be32(pb); /* reserved */
|
759 |
get_be16(pb); /* reserved */
|
760 |
dref_id = get_be16(pb); |
761 |
|
762 |
if (st->codec->codec_tag &&
|
763 |
st->codec->codec_tag != format && |
764 |
(c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id |
765 |
: st->codec->codec_tag != MKTAG('j','p','e','g')) |
766 |
){ |
767 |
/* Multiple fourcc, we skip JPEG. This is not correct, we should
|
768 |
* export it as a separate AVStream but this needs a few changes
|
769 |
* in the MOV demuxer, patch welcome. */
|
770 |
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
|
771 |
url_fskip(pb, size - (url_ftell(pb) - start_pos)); |
772 |
continue;
|
773 |
} |
774 |
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
|
775 |
sc->dref_id= dref_id; |
776 |
|
777 |
st->codec->codec_tag = format; |
778 |
id = codec_get_id(codec_movaudio_tags, format); |
779 |
if (id<=0 && (format&0xFFFF) == 'm'+('s'<<8)) |
780 |
id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
|
781 |
|
782 |
if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) { |
783 |
st->codec->codec_type = CODEC_TYPE_AUDIO; |
784 |
} else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */ |
785 |
format && format != MKTAG('m','p','4','s')) { /* skip old asf mpeg4 tag */ |
786 |
id = codec_get_id(codec_movvideo_tags, format); |
787 |
if (id <= 0) |
788 |
id = codec_get_id(codec_bmp_tags, format); |
789 |
if (id > 0) |
790 |
st->codec->codec_type = CODEC_TYPE_VIDEO; |
791 |
else if(st->codec->codec_type == CODEC_TYPE_DATA){ |
792 |
id = codec_get_id(ff_codec_movsubtitle_tags, format); |
793 |
if(id > 0) |
794 |
st->codec->codec_type = CODEC_TYPE_SUBTITLE; |
795 |
} |
796 |
} |
797 |
|
798 |
dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n", size,
|
799 |
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, |
800 |
(format >> 24) & 0xff, st->codec->codec_type); |
801 |
|
802 |
if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
|
803 |
uint8_t codec_name[32];
|
804 |
unsigned int color_depth; |
805 |
int color_greyscale;
|
806 |
|
807 |
st->codec->codec_id = id; |
808 |
get_be16(pb); /* version */
|
809 |
get_be16(pb); /* revision level */
|
810 |
get_be32(pb); /* vendor */
|
811 |
get_be32(pb); /* temporal quality */
|
812 |
get_be32(pb); /* spatial quality */
|
813 |
|
814 |
st->codec->width = get_be16(pb); /* width */
|
815 |
st->codec->height = get_be16(pb); /* height */
|
816 |
|
817 |
get_be32(pb); /* horiz resolution */
|
818 |
get_be32(pb); /* vert resolution */
|
819 |
get_be32(pb); /* data size, always 0 */
|
820 |
get_be16(pb); /* frames per samples */
|
821 |
|
822 |
get_buffer(pb, codec_name, 32); /* codec name, pascal string */ |
823 |
if (codec_name[0] <= 31) { |
824 |
memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]); |
825 |
st->codec->codec_name[codec_name[0]] = 0; |
826 |
} |
827 |
|
828 |
st->codec->bits_per_coded_sample = get_be16(pb); /* depth */
|
829 |
st->codec->color_table_id = get_be16(pb); /* colortable id */
|
830 |
dprintf(c->fc, "depth %d, ctab id %d\n",
|
831 |
st->codec->bits_per_coded_sample, st->codec->color_table_id); |
832 |
/* figure out the palette situation */
|
833 |
color_depth = st->codec->bits_per_coded_sample & 0x1F;
|
834 |
color_greyscale = st->codec->bits_per_coded_sample & 0x20;
|
835 |
|
836 |
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
837 |
if ((color_depth == 2) || (color_depth == 4) || |
838 |
(color_depth == 8)) {
|
839 |
/* for palette traversal */
|
840 |
unsigned int color_start, color_count, color_end; |
841 |
unsigned char r, g, b; |
842 |
|
843 |
if (color_greyscale) {
|
844 |
int color_index, color_dec;
|
845 |
/* compute the greyscale palette */
|
846 |
st->codec->bits_per_coded_sample = color_depth; |
847 |
color_count = 1 << color_depth;
|
848 |
color_index = 255;
|
849 |
color_dec = 256 / (color_count - 1); |
850 |
for (j = 0; j < color_count; j++) { |
851 |
r = g = b = color_index; |
852 |
c->palette_control.palette[j] = |
853 |
(r << 16) | (g << 8) | (b); |
854 |
color_index -= color_dec; |
855 |
if (color_index < 0) |
856 |
color_index = 0;
|
857 |
} |
858 |
} else if (st->codec->color_table_id) { |
859 |
const uint8_t *color_table;
|
860 |
/* if flag bit 3 is set, use the default palette */
|
861 |
color_count = 1 << color_depth;
|
862 |
if (color_depth == 2) |
863 |
color_table = ff_qt_default_palette_4; |
864 |
else if (color_depth == 4) |
865 |
color_table = ff_qt_default_palette_16; |
866 |
else
|
867 |
color_table = ff_qt_default_palette_256; |
868 |
|
869 |
for (j = 0; j < color_count; j++) { |
870 |
r = color_table[j * 4 + 0]; |
871 |
g = color_table[j * 4 + 1]; |
872 |
b = color_table[j * 4 + 2]; |
873 |
c->palette_control.palette[j] = |
874 |
(r << 16) | (g << 8) | (b); |
875 |
} |
876 |
} else {
|
877 |
/* load the palette from the file */
|
878 |
color_start = get_be32(pb); |
879 |
color_count = get_be16(pb); |
880 |
color_end = get_be16(pb); |
881 |
if ((color_start <= 255) && |
882 |
(color_end <= 255)) {
|
883 |
for (j = color_start; j <= color_end; j++) {
|
884 |
/* each R, G, or B component is 16 bits;
|
885 |
* only use the top 8 bits; skip alpha bytes
|
886 |
* up front */
|
887 |
get_byte(pb); |
888 |
get_byte(pb); |
889 |
r = get_byte(pb); |
890 |
get_byte(pb); |
891 |
g = get_byte(pb); |
892 |
get_byte(pb); |
893 |
b = get_byte(pb); |
894 |
get_byte(pb); |
895 |
c->palette_control.palette[j] = |
896 |
(r << 16) | (g << 8) | (b); |
897 |
} |
898 |
} |
899 |
} |
900 |
st->codec->palctrl = &c->palette_control; |
901 |
st->codec->palctrl->palette_changed = 1;
|
902 |
} else
|
903 |
st->codec->palctrl = NULL;
|
904 |
} else if(st->codec->codec_type==CODEC_TYPE_AUDIO) { |
905 |
int bits_per_sample, flags;
|
906 |
uint16_t version = get_be16(pb); |
907 |
|
908 |
st->codec->codec_id = id; |
909 |
get_be16(pb); /* revision level */
|
910 |
get_be32(pb); /* vendor */
|
911 |
|
912 |
st->codec->channels = get_be16(pb); /* channel count */
|
913 |
dprintf(c->fc, "audio channels %d\n", st->codec->channels);
|
914 |
st->codec->bits_per_coded_sample = get_be16(pb); /* sample size */
|
915 |
|
916 |
sc->audio_cid = get_be16(pb); |
917 |
get_be16(pb); /* packet size = 0 */
|
918 |
|
919 |
st->codec->sample_rate = ((get_be32(pb) >> 16));
|
920 |
|
921 |
//Read QT version 1 fields. In version 0 these do not exist.
|
922 |
dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
|
923 |
if(!c->isom) {
|
924 |
if(version==1) { |
925 |
sc->samples_per_frame = get_be32(pb); |
926 |
get_be32(pb); /* bytes per packet */
|
927 |
sc->bytes_per_frame = get_be32(pb); |
928 |
get_be32(pb); /* bytes per sample */
|
929 |
} else if(version==2) { |
930 |
get_be32(pb); /* sizeof struct only */
|
931 |
st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
|
932 |
st->codec->channels = get_be32(pb); |
933 |
get_be32(pb); /* always 0x7F000000 */
|
934 |
st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
|
935 |
flags = get_be32(pb); /* lcpm format specific flag */
|
936 |
sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
|
937 |
sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
|
938 |
if (format == MKTAG('l','p','c','m')) |
939 |
st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags); |
940 |
} |
941 |
} |
942 |
|
943 |
switch (st->codec->codec_id) {
|
944 |
case CODEC_ID_PCM_S8:
|
945 |
case CODEC_ID_PCM_U8:
|
946 |
if (st->codec->bits_per_coded_sample == 16) |
947 |
st->codec->codec_id = CODEC_ID_PCM_S16BE; |
948 |
break;
|
949 |
case CODEC_ID_PCM_S16LE:
|
950 |
case CODEC_ID_PCM_S16BE:
|
951 |
if (st->codec->bits_per_coded_sample == 8) |
952 |
st->codec->codec_id = CODEC_ID_PCM_S8; |
953 |
else if (st->codec->bits_per_coded_sample == 24) |
954 |
st->codec->codec_id = |
955 |
st->codec->codec_id == CODEC_ID_PCM_S16BE ? |
956 |
CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE; |
957 |
break;
|
958 |
/* set values for old format before stsd version 1 appeared */
|
959 |
case CODEC_ID_MACE3:
|
960 |
sc->samples_per_frame = 6;
|
961 |
sc->bytes_per_frame = 2*st->codec->channels;
|
962 |
break;
|
963 |
case CODEC_ID_MACE6:
|
964 |
sc->samples_per_frame = 6;
|
965 |
sc->bytes_per_frame = 1*st->codec->channels;
|
966 |
break;
|
967 |
case CODEC_ID_ADPCM_IMA_QT:
|
968 |
sc->samples_per_frame = 64;
|
969 |
sc->bytes_per_frame = 34*st->codec->channels;
|
970 |
break;
|
971 |
case CODEC_ID_GSM:
|
972 |
sc->samples_per_frame = 160;
|
973 |
sc->bytes_per_frame = 33;
|
974 |
break;
|
975 |
default:
|
976 |
break;
|
977 |
} |
978 |
|
979 |
bits_per_sample = av_get_bits_per_sample(st->codec->codec_id); |
980 |
if (bits_per_sample) {
|
981 |
st->codec->bits_per_coded_sample = bits_per_sample; |
982 |
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
|
983 |
} |
984 |
} else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){ |
985 |
// ttxt stsd contains display flags, justification, background
|
986 |
// color, fonts, and default styles, so fake an atom to read it
|
987 |
MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) }; |
988 |
mov_read_glbl(c, pb, fake_atom); |
989 |
st->codec->codec_id= id; |
990 |
st->codec->width = sc->width; |
991 |
st->codec->height = sc->height; |
992 |
} else {
|
993 |
/* other codec type, just skip (rtp, mp4s, tmcd ...) */
|
994 |
url_fskip(pb, size - (url_ftell(pb) - start_pos)); |
995 |
} |
996 |
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
|
997 |
a.size = size - (url_ftell(pb) - start_pos); |
998 |
if (a.size > 8) { |
999 |
if (mov_read_default(c, pb, a) < 0) |
1000 |
return -1; |
1001 |
} else if (a.size > 0) |
1002 |
url_fskip(pb, a.size); |
1003 |
} |
1004 |
|
1005 |
if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) |
1006 |
st->codec->sample_rate= sc->time_scale; |
1007 |
|
1008 |
/* special codec parameters handling */
|
1009 |
switch (st->codec->codec_id) {
|
1010 |
#if CONFIG_DV_DEMUXER
|
1011 |
case CODEC_ID_DVAUDIO:
|
1012 |
c->dv_fctx = avformat_alloc_context(); |
1013 |
c->dv_demux = dv_init_demux(c->dv_fctx); |
1014 |
if (!c->dv_demux) {
|
1015 |
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
|
1016 |
return -1; |
1017 |
} |
1018 |
sc->dv_audio_container = 1;
|
1019 |
st->codec->codec_id = CODEC_ID_PCM_S16LE; |
1020 |
break;
|
1021 |
#endif
|
1022 |
/* no ifdef since parameters are always those */
|
1023 |
case CODEC_ID_QCELP:
|
1024 |
st->codec->frame_size= 160;
|
1025 |
st->codec->channels= 1; /* really needed */ |
1026 |
break;
|
1027 |
case CODEC_ID_AMR_NB:
|
1028 |
case CODEC_ID_AMR_WB:
|
1029 |
st->codec->frame_size= sc->samples_per_frame; |
1030 |
st->codec->channels= 1; /* really needed */ |
1031 |
/* force sample rate for amr, stsd in 3gp does not store sample rate */
|
1032 |
if (st->codec->codec_id == CODEC_ID_AMR_NB)
|
1033 |
st->codec->sample_rate = 8000;
|
1034 |
else if (st->codec->codec_id == CODEC_ID_AMR_WB) |
1035 |
st->codec->sample_rate = 16000;
|
1036 |
break;
|
1037 |
case CODEC_ID_MP2:
|
1038 |
case CODEC_ID_MP3:
|
1039 |
st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
|
1040 |
st->need_parsing = AVSTREAM_PARSE_FULL; |
1041 |
break;
|
1042 |
case CODEC_ID_GSM:
|
1043 |
case CODEC_ID_ADPCM_MS:
|
1044 |
case CODEC_ID_ADPCM_IMA_WAV:
|
1045 |
st->codec->block_align = sc->bytes_per_frame; |
1046 |
break;
|
1047 |
case CODEC_ID_ALAC:
|
1048 |
if (st->codec->extradata_size == 36) { |
1049 |
st->codec->frame_size = AV_RB32(st->codec->extradata+12);
|
1050 |
st->codec->channels = AV_RB8 (st->codec->extradata+21);
|
1051 |
} |
1052 |
break;
|
1053 |
default:
|
1054 |
break;
|
1055 |
} |
1056 |
|
1057 |
return 0; |
1058 |
} |
1059 |
|
1060 |
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1061 |
{ |
1062 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1063 |
MOVStreamContext *sc = st->priv_data; |
1064 |
unsigned int i, entries; |
1065 |
|
1066 |
get_byte(pb); /* version */
|
1067 |
get_be24(pb); /* flags */
|
1068 |
|
1069 |
entries = get_be32(pb); |
1070 |
|
1071 |
if(entries >= UINT_MAX / sizeof(*sc->sample_to_chunk)) |
1072 |
return -1; |
1073 |
|
1074 |
dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries); |
1075 |
|
1076 |
sc->sample_to_chunk_sz = entries; |
1077 |
sc->sample_to_chunk = av_malloc(entries * sizeof(*sc->sample_to_chunk));
|
1078 |
if (!sc->sample_to_chunk)
|
1079 |
return -1; |
1080 |
for(i=0; i<entries; i++) { |
1081 |
sc->sample_to_chunk[i].first = get_be32(pb); |
1082 |
sc->sample_to_chunk[i].count = get_be32(pb); |
1083 |
sc->sample_to_chunk[i].id = get_be32(pb); |
1084 |
} |
1085 |
return 0; |
1086 |
} |
1087 |
|
1088 |
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1089 |
{ |
1090 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1091 |
MOVStreamContext *sc = st->priv_data; |
1092 |
unsigned int i, entries; |
1093 |
|
1094 |
get_byte(pb); /* version */
|
1095 |
get_be24(pb); /* flags */
|
1096 |
|
1097 |
entries = get_be32(pb); |
1098 |
|
1099 |
if(entries >= UINT_MAX / sizeof(int)) |
1100 |
return -1; |
1101 |
|
1102 |
sc->keyframe_count = entries; |
1103 |
|
1104 |
dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
|
1105 |
|
1106 |
sc->keyframes = av_malloc(entries * sizeof(int)); |
1107 |
if (!sc->keyframes)
|
1108 |
return -1; |
1109 |
for(i=0; i<entries; i++) { |
1110 |
sc->keyframes[i] = get_be32(pb); |
1111 |
//dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
|
1112 |
} |
1113 |
return 0; |
1114 |
} |
1115 |
|
1116 |
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1117 |
{ |
1118 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1119 |
MOVStreamContext *sc = st->priv_data; |
1120 |
unsigned int i, entries, sample_size; |
1121 |
|
1122 |
get_byte(pb); /* version */
|
1123 |
get_be24(pb); /* flags */
|
1124 |
|
1125 |
sample_size = get_be32(pb); |
1126 |
if (!sc->sample_size) /* do not overwrite value computed in stsd */ |
1127 |
sc->sample_size = sample_size; |
1128 |
entries = get_be32(pb); |
1129 |
if(entries >= UINT_MAX / sizeof(int)) |
1130 |
return -1; |
1131 |
|
1132 |
sc->sample_count = entries; |
1133 |
if (sample_size)
|
1134 |
return 0; |
1135 |
|
1136 |
dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
|
1137 |
|
1138 |
sc->sample_sizes = av_malloc(entries * sizeof(int)); |
1139 |
if (!sc->sample_sizes)
|
1140 |
return -1; |
1141 |
for(i=0; i<entries; i++) |
1142 |
sc->sample_sizes[i] = get_be32(pb); |
1143 |
return 0; |
1144 |
} |
1145 |
|
1146 |
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1147 |
{ |
1148 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1149 |
MOVStreamContext *sc = st->priv_data; |
1150 |
unsigned int i, entries; |
1151 |
int64_t duration=0;
|
1152 |
int64_t total_sample_count=0;
|
1153 |
|
1154 |
get_byte(pb); /* version */
|
1155 |
get_be24(pb); /* flags */
|
1156 |
entries = get_be32(pb); |
1157 |
if(entries >= UINT_MAX / sizeof(*sc->stts_data)) |
1158 |
return -1; |
1159 |
|
1160 |
sc->stts_count = entries; |
1161 |
sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
|
1162 |
if (!sc->stts_data)
|
1163 |
return -1; |
1164 |
dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries); |
1165 |
|
1166 |
sc->time_rate=0;
|
1167 |
|
1168 |
for(i=0; i<entries; i++) { |
1169 |
int sample_duration;
|
1170 |
int sample_count;
|
1171 |
|
1172 |
sample_count=get_be32(pb); |
1173 |
sample_duration = get_be32(pb); |
1174 |
sc->stts_data[i].count= sample_count; |
1175 |
sc->stts_data[i].duration= sample_duration; |
1176 |
|
1177 |
sc->time_rate= av_gcd(sc->time_rate, sample_duration); |
1178 |
|
1179 |
dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
|
1180 |
|
1181 |
duration+=(int64_t)sample_duration*sample_count; |
1182 |
total_sample_count+=sample_count; |
1183 |
} |
1184 |
|
1185 |
st->nb_frames= total_sample_count; |
1186 |
if(duration)
|
1187 |
st->duration= duration; |
1188 |
return 0; |
1189 |
} |
1190 |
|
1191 |
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1192 |
{ |
1193 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1194 |
MOVStreamContext *sc = st->priv_data; |
1195 |
unsigned int i, entries; |
1196 |
|
1197 |
get_byte(pb); /* version */
|
1198 |
get_be24(pb); /* flags */
|
1199 |
entries = get_be32(pb); |
1200 |
if(entries >= UINT_MAX / sizeof(*sc->ctts_data)) |
1201 |
return -1; |
1202 |
|
1203 |
sc->ctts_count = entries; |
1204 |
sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
|
1205 |
if (!sc->ctts_data)
|
1206 |
return -1; |
1207 |
dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries); |
1208 |
|
1209 |
for(i=0; i<entries; i++) { |
1210 |
int count =get_be32(pb);
|
1211 |
int duration =get_be32(pb);
|
1212 |
|
1213 |
if (duration < 0) { |
1214 |
sc->wrong_dts = 1;
|
1215 |
st->codec->has_b_frames = 1;
|
1216 |
} |
1217 |
sc->ctts_data[i].count = count; |
1218 |
sc->ctts_data[i].duration= duration; |
1219 |
|
1220 |
sc->time_rate= av_gcd(sc->time_rate, FFABS(duration)); |
1221 |
} |
1222 |
return 0; |
1223 |
} |
1224 |
|
1225 |
static void mov_build_index(MOVContext *mov, AVStream *st) |
1226 |
{ |
1227 |
MOVStreamContext *sc = st->priv_data; |
1228 |
int64_t current_offset; |
1229 |
int64_t current_dts = 0;
|
1230 |
unsigned int stts_index = 0; |
1231 |
unsigned int stsc_index = 0; |
1232 |
unsigned int stss_index = 0; |
1233 |
unsigned int i, j; |
1234 |
|
1235 |
/* adjust first dts according to edit list */
|
1236 |
if (sc->time_offset) {
|
1237 |
assert(sc->time_offset % sc->time_rate == 0);
|
1238 |
current_dts = - (sc->time_offset / sc->time_rate); |
1239 |
} |
1240 |
|
1241 |
/* only use old uncompressed audio chunk demuxing when stts specifies it */
|
1242 |
if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
|
1243 |
sc->stts_count == 1 && sc->stts_data[0].duration == 1)) { |
1244 |
unsigned int current_sample = 0; |
1245 |
unsigned int stts_sample = 0; |
1246 |
unsigned int keyframe, sample_size; |
1247 |
unsigned int distance = 0; |
1248 |
int key_off = sc->keyframes && sc->keyframes[0] == 1; |
1249 |
|
1250 |
st->nb_frames = sc->sample_count; |
1251 |
for (i = 0; i < sc->chunk_count; i++) { |
1252 |
current_offset = sc->chunk_offsets[i]; |
1253 |
if (stsc_index + 1 < sc->sample_to_chunk_sz && |
1254 |
i + 1 == sc->sample_to_chunk[stsc_index + 1].first) |
1255 |
stsc_index++; |
1256 |
for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) { |
1257 |
if (current_sample >= sc->sample_count) {
|
1258 |
av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
|
1259 |
goto out;
|
1260 |
} |
1261 |
keyframe = !sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]; |
1262 |
if (keyframe) {
|
1263 |
distance = 0;
|
1264 |
if (stss_index + 1 < sc->keyframe_count) |
1265 |
stss_index++; |
1266 |
} |
1267 |
sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
|
1268 |
if(sc->pseudo_stream_id == -1 || |
1269 |
sc->sample_to_chunk[stsc_index].id - 1 == sc->pseudo_stream_id) {
|
1270 |
av_add_index_entry(st, current_offset, current_dts, sample_size, distance, |
1271 |
keyframe ? AVINDEX_KEYFRAME : 0);
|
1272 |
dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
1273 |
"size %d, distance %d, keyframe %d\n", st->index, current_sample,
|
1274 |
current_offset, current_dts, sample_size, distance, keyframe); |
1275 |
} |
1276 |
current_offset += sample_size; |
1277 |
assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
|
1278 |
current_dts += sc->stts_data[stts_index].duration / sc->time_rate; |
1279 |
distance++; |
1280 |
stts_sample++; |
1281 |
current_sample++; |
1282 |
if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) { |
1283 |
stts_sample = 0;
|
1284 |
stts_index++; |
1285 |
} |
1286 |
} |
1287 |
} |
1288 |
} else { /* read whole chunk */ |
1289 |
unsigned int chunk_samples, chunk_size, chunk_duration; |
1290 |
unsigned int frames = 1; |
1291 |
for (i = 0; i < sc->chunk_count; i++) { |
1292 |
current_offset = sc->chunk_offsets[i]; |
1293 |
if (stsc_index + 1 < sc->sample_to_chunk_sz && |
1294 |
i + 1 == sc->sample_to_chunk[stsc_index + 1].first) |
1295 |
stsc_index++; |
1296 |
chunk_samples = sc->sample_to_chunk[stsc_index].count; |
1297 |
/* get chunk size, beware of alaw/ulaw/mace */
|
1298 |
if (sc->samples_per_frame > 0 && |
1299 |
(chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
|
1300 |
if (sc->samples_per_frame < 160) |
1301 |
chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame; |
1302 |
else {
|
1303 |
chunk_size = sc->bytes_per_frame; |
1304 |
frames = chunk_samples / sc->samples_per_frame; |
1305 |
chunk_samples = sc->samples_per_frame; |
1306 |
} |
1307 |
} else
|
1308 |
chunk_size = chunk_samples * sc->sample_size; |
1309 |
for (j = 0; j < frames; j++) { |
1310 |
av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
|
1311 |
/* get chunk duration */
|
1312 |
chunk_duration = 0;
|
1313 |
while (chunk_samples > 0) { |
1314 |
if (chunk_samples < sc->stts_data[stts_index].count) {
|
1315 |
chunk_duration += sc->stts_data[stts_index].duration * chunk_samples; |
1316 |
sc->stts_data[stts_index].count -= chunk_samples; |
1317 |
break;
|
1318 |
} else {
|
1319 |
chunk_duration += sc->stts_data[stts_index].duration * chunk_samples; |
1320 |
chunk_samples -= sc->stts_data[stts_index].count; |
1321 |
if (stts_index + 1 < sc->stts_count) |
1322 |
stts_index++; |
1323 |
} |
1324 |
} |
1325 |
current_offset += sc->bytes_per_frame; |
1326 |
dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", " |
1327 |
"size %d, duration %d\n", st->index, i, current_offset, current_dts,
|
1328 |
chunk_size, chunk_duration); |
1329 |
assert(chunk_duration % sc->time_rate == 0);
|
1330 |
current_dts += chunk_duration / sc->time_rate; |
1331 |
} |
1332 |
} |
1333 |
} |
1334 |
out:
|
1335 |
/* adjust sample count to avindex entries */
|
1336 |
sc->sample_count = st->nb_index_entries; |
1337 |
} |
1338 |
|
1339 |
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1340 |
{ |
1341 |
AVStream *st; |
1342 |
MOVStreamContext *sc; |
1343 |
int ret;
|
1344 |
|
1345 |
st = av_new_stream(c->fc, c->fc->nb_streams); |
1346 |
if (!st) return AVERROR(ENOMEM); |
1347 |
sc = av_mallocz(sizeof(MOVStreamContext));
|
1348 |
if (!sc) return AVERROR(ENOMEM); |
1349 |
|
1350 |
st->priv_data = sc; |
1351 |
st->codec->codec_type = CODEC_TYPE_DATA; |
1352 |
st->start_time = 0; /* XXX: check */ |
1353 |
sc->ffindex = st->index; |
1354 |
|
1355 |
if ((ret = mov_read_default(c, pb, atom)) < 0) |
1356 |
return ret;
|
1357 |
|
1358 |
/* sanity checks */
|
1359 |
if(sc->chunk_count && (!sc->stts_count || !sc->sample_to_chunk_sz ||
|
1360 |
(!sc->sample_size && !sc->sample_count))){ |
1361 |
av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
|
1362 |
st->index); |
1363 |
sc->sample_count = 0; //ignore track |
1364 |
return 0; |
1365 |
} |
1366 |
if(!sc->time_rate)
|
1367 |
sc->time_rate=1;
|
1368 |
if(!sc->time_scale)
|
1369 |
sc->time_scale= c->time_scale; |
1370 |
av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
|
1371 |
|
1372 |
if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
|
1373 |
!st->codec->frame_size && sc->stts_count == 1)
|
1374 |
st->codec->frame_size = av_rescale(sc->time_rate, st->codec->sample_rate, sc->time_scale); |
1375 |
|
1376 |
if(st->duration != AV_NOPTS_VALUE){
|
1377 |
assert(st->duration % sc->time_rate == 0);
|
1378 |
st->duration /= sc->time_rate; |
1379 |
} |
1380 |
|
1381 |
mov_build_index(c, st); |
1382 |
|
1383 |
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) { |
1384 |
if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0) |
1385 |
av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
|
1386 |
st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
|
1387 |
} else
|
1388 |
sc->pb = c->fc->pb; |
1389 |
|
1390 |
switch (st->codec->codec_id) {
|
1391 |
#if CONFIG_H261_DECODER
|
1392 |
case CODEC_ID_H261:
|
1393 |
#endif
|
1394 |
#if CONFIG_H263_DECODER
|
1395 |
case CODEC_ID_H263:
|
1396 |
#endif
|
1397 |
#if CONFIG_MPEG4_DECODER
|
1398 |
case CODEC_ID_MPEG4:
|
1399 |
#endif
|
1400 |
st->codec->width= 0; /* let decoder init width/height */ |
1401 |
st->codec->height= 0;
|
1402 |
break;
|
1403 |
} |
1404 |
|
1405 |
/* Do not need those anymore. */
|
1406 |
av_freep(&sc->chunk_offsets); |
1407 |
av_freep(&sc->sample_to_chunk); |
1408 |
av_freep(&sc->sample_sizes); |
1409 |
av_freep(&sc->keyframes); |
1410 |
av_freep(&sc->stts_data); |
1411 |
|
1412 |
return 0; |
1413 |
} |
1414 |
|
1415 |
static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1416 |
{ |
1417 |
int ret;
|
1418 |
c->itunes_metadata = 1;
|
1419 |
ret = mov_read_default(c, pb, atom); |
1420 |
c->itunes_metadata = 0;
|
1421 |
return ret;
|
1422 |
} |
1423 |
|
1424 |
static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1425 |
{ |
1426 |
url_fskip(pb, 4); // version + flags |
1427 |
atom.size -= 4;
|
1428 |
return mov_read_default(c, pb, atom);
|
1429 |
} |
1430 |
|
1431 |
static int mov_read_trkn(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1432 |
{ |
1433 |
get_be32(pb); // type
|
1434 |
get_be32(pb); // unknown
|
1435 |
c->fc->track = get_be32(pb); |
1436 |
dprintf(c->fc, "%.4s %d\n", (char*)&atom.type, c->fc->track); |
1437 |
return 0; |
1438 |
} |
1439 |
|
1440 |
static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1441 |
{ |
1442 |
char *str = NULL; |
1443 |
int size;
|
1444 |
uint16_t str_size; |
1445 |
|
1446 |
if (c->itunes_metadata) {
|
1447 |
int data_size = get_be32(pb);
|
1448 |
int tag = get_le32(pb);
|
1449 |
if (tag == MKTAG('d','a','t','a')) { |
1450 |
get_be32(pb); // type
|
1451 |
get_be32(pb); // unknown
|
1452 |
str_size = data_size - 16;
|
1453 |
atom.size -= 16;
|
1454 |
} else return 0; |
1455 |
} else {
|
1456 |
str_size = get_be16(pb); // string length
|
1457 |
get_be16(pb); // language
|
1458 |
atom.size -= 4;
|
1459 |
} |
1460 |
switch (atom.type) {
|
1461 |
case MKTAG(0xa9,'n','a','m'): |
1462 |
str = c->fc->title; size = sizeof(c->fc->title); break; |
1463 |
case MKTAG(0xa9,'A','R','T'): |
1464 |
case MKTAG(0xa9,'w','r','t'): |
1465 |
str = c->fc->author; size = sizeof(c->fc->author); break; |
1466 |
case MKTAG(0xa9,'c','p','y'): |
1467 |
str = c->fc->copyright; size = sizeof(c->fc->copyright); break; |
1468 |
case MKTAG(0xa9,'c','m','t'): |
1469 |
case MKTAG(0xa9,'i','n','f'): |
1470 |
str = c->fc->comment; size = sizeof(c->fc->comment); break; |
1471 |
case MKTAG(0xa9,'a','l','b'): |
1472 |
str = c->fc->album; size = sizeof(c->fc->album); break; |
1473 |
} |
1474 |
if (!str)
|
1475 |
return 0; |
1476 |
if (atom.size < 0) |
1477 |
return -1; |
1478 |
|
1479 |
get_buffer(pb, str, FFMIN3(size, str_size, atom.size)); |
1480 |
dprintf(c->fc, "%.4s %s %d %lld\n", (char*)&atom.type, str, str_size, atom.size); |
1481 |
return 0; |
1482 |
} |
1483 |
|
1484 |
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1485 |
{ |
1486 |
int i;
|
1487 |
int width;
|
1488 |
int height;
|
1489 |
int64_t disp_transform[2];
|
1490 |
int display_matrix[3][2]; |
1491 |
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
1492 |
MOVStreamContext *sc = st->priv_data; |
1493 |
int version = get_byte(pb);
|
1494 |
|
1495 |
get_be24(pb); /* flags */
|
1496 |
/*
|
1497 |
MOV_TRACK_ENABLED 0x0001
|
1498 |
MOV_TRACK_IN_MOVIE 0x0002
|
1499 |
MOV_TRACK_IN_PREVIEW 0x0004
|
1500 |
MOV_TRACK_IN_POSTER 0x0008
|
1501 |
*/
|
1502 |
|
1503 |
if (version == 1) { |
1504 |
get_be64(pb); |
1505 |
get_be64(pb); |
1506 |
} else {
|
1507 |
get_be32(pb); /* creation time */
|
1508 |
get_be32(pb); /* modification time */
|
1509 |
} |
1510 |
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/ |
1511 |
get_be32(pb); /* reserved */
|
1512 |
st->start_time = 0; /* check */ |
1513 |
/* highlevel (considering edits) duration in movie timebase */
|
1514 |
(version == 1) ? get_be64(pb) : get_be32(pb);
|
1515 |
get_be32(pb); /* reserved */
|
1516 |
get_be32(pb); /* reserved */
|
1517 |
|
1518 |
get_be16(pb); /* layer */
|
1519 |
get_be16(pb); /* alternate group */
|
1520 |
get_be16(pb); /* volume */
|
1521 |
get_be16(pb); /* reserved */
|
1522 |
|
1523 |
//read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
|
1524 |
// they're kept in fixed point format through all calculations
|
1525 |
// ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
|
1526 |
for (i = 0; i < 3; i++) { |
1527 |
display_matrix[i][0] = get_be32(pb); // 16.16 fixed point |
1528 |
display_matrix[i][1] = get_be32(pb); // 16.16 fixed point |
1529 |
get_be32(pb); // 2.30 fixed point (not used)
|
1530 |
} |
1531 |
|
1532 |
width = get_be32(pb); // 16.16 fixed point track width
|
1533 |
height = get_be32(pb); // 16.16 fixed point track height
|
1534 |
sc->width = width >> 16;
|
1535 |
sc->height = height >> 16;
|
1536 |
|
1537 |
//transform the display width/height according to the matrix
|
1538 |
// skip this if the display matrix is the default identity matrix
|
1539 |
// to keep the same scale, use [width height 1<<16]
|
1540 |
if (width && height &&
|
1541 |
(display_matrix[0][0] != 65536 || display_matrix[0][1] || |
1542 |
display_matrix[1][0] || display_matrix[1][1] != 65536 || |
1543 |
display_matrix[2][0] || display_matrix[2][1])) { |
1544 |
for (i = 0; i < 2; i++) |
1545 |
disp_transform[i] = |
1546 |
(int64_t) width * display_matrix[0][i] +
|
1547 |
(int64_t) height * display_matrix[1][i] +
|
1548 |
((int64_t) display_matrix[2][i] << 16); |
1549 |
|
1550 |
//sample aspect ratio is new width/height divided by old width/height
|
1551 |
st->sample_aspect_ratio = av_d2q( |
1552 |
((double) disp_transform[0] * height) / |
1553 |
((double) disp_transform[1] * width), INT_MAX); |
1554 |
} |
1555 |
return 0; |
1556 |
} |
1557 |
|
1558 |
static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1559 |
{ |
1560 |
MOVFragment *frag = &c->fragment; |
1561 |
MOVTrackExt *trex = NULL;
|
1562 |
int flags, track_id, i;
|
1563 |
|
1564 |
get_byte(pb); /* version */
|
1565 |
flags = get_be24(pb); |
1566 |
|
1567 |
track_id = get_be32(pb); |
1568 |
if (!track_id || track_id > c->fc->nb_streams)
|
1569 |
return -1; |
1570 |
frag->track_id = track_id; |
1571 |
for (i = 0; i < c->trex_count; i++) |
1572 |
if (c->trex_data[i].track_id == frag->track_id) {
|
1573 |
trex = &c->trex_data[i]; |
1574 |
break;
|
1575 |
} |
1576 |
if (!trex) {
|
1577 |
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
|
1578 |
return -1; |
1579 |
} |
1580 |
|
1581 |
if (flags & 0x01) frag->base_data_offset = get_be64(pb); |
1582 |
else frag->base_data_offset = frag->moof_offset;
|
1583 |
if (flags & 0x02) frag->stsd_id = get_be32(pb); |
1584 |
else frag->stsd_id = trex->stsd_id;
|
1585 |
|
1586 |
frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
|
1587 |
frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
|
1588 |
frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
|
1589 |
dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
|
1590 |
return 0; |
1591 |
} |
1592 |
|
1593 |
static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1594 |
{ |
1595 |
MOVTrackExt *trex; |
1596 |
|
1597 |
if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data)) |
1598 |
return -1; |
1599 |
c->trex_data = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data)); |
1600 |
if (!c->trex_data)
|
1601 |
return AVERROR(ENOMEM);
|
1602 |
trex = &c->trex_data[c->trex_count++]; |
1603 |
get_byte(pb); /* version */
|
1604 |
get_be24(pb); /* flags */
|
1605 |
trex->track_id = get_be32(pb); |
1606 |
trex->stsd_id = get_be32(pb); |
1607 |
trex->duration = get_be32(pb); |
1608 |
trex->size = get_be32(pb); |
1609 |
trex->flags = get_be32(pb); |
1610 |
return 0; |
1611 |
} |
1612 |
|
1613 |
static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1614 |
{ |
1615 |
MOVFragment *frag = &c->fragment; |
1616 |
AVStream *st; |
1617 |
MOVStreamContext *sc; |
1618 |
uint64_t offset; |
1619 |
int64_t dts; |
1620 |
int data_offset = 0; |
1621 |
unsigned entries, first_sample_flags = frag->flags;
|
1622 |
int flags, distance, i;
|
1623 |
|
1624 |
if (!frag->track_id || frag->track_id > c->fc->nb_streams)
|
1625 |
return -1; |
1626 |
st = c->fc->streams[frag->track_id-1];
|
1627 |
sc = st->priv_data; |
1628 |
if (sc->pseudo_stream_id+1 != frag->stsd_id) |
1629 |
return 0; |
1630 |
get_byte(pb); /* version */
|
1631 |
flags = get_be24(pb); |
1632 |
entries = get_be32(pb); |
1633 |
dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
|
1634 |
if (flags & 0x001) data_offset = get_be32(pb); |
1635 |
if (flags & 0x004) first_sample_flags = get_be32(pb); |
1636 |
if (flags & 0x800) { |
1637 |
if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data)) |
1638 |
return -1; |
1639 |
sc->ctts_data = av_realloc(sc->ctts_data, |
1640 |
(entries+sc->ctts_count)*sizeof(*sc->ctts_data));
|
1641 |
if (!sc->ctts_data)
|
1642 |
return AVERROR(ENOMEM);
|
1643 |
} |
1644 |
dts = st->duration; |
1645 |
offset = frag->base_data_offset + data_offset; |
1646 |
distance = 0;
|
1647 |
dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
|
1648 |
for (i = 0; i < entries; i++) { |
1649 |
unsigned sample_size = frag->size;
|
1650 |
int sample_flags = i ? frag->flags : first_sample_flags;
|
1651 |
unsigned sample_duration = frag->duration;
|
1652 |
int keyframe;
|
1653 |
|
1654 |
if (flags & 0x100) sample_duration = get_be32(pb); |
1655 |
if (flags & 0x200) sample_size = get_be32(pb); |
1656 |
if (flags & 0x400) sample_flags = get_be32(pb); |
1657 |
if (flags & 0x800) { |
1658 |
sc->ctts_data[sc->ctts_count].count = 1;
|
1659 |
sc->ctts_data[sc->ctts_count].duration = get_be32(pb); |
1660 |
sc->ctts_count++; |
1661 |
} |
1662 |
if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
|
1663 |
(flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000)) |
1664 |
distance = 0;
|
1665 |
av_add_index_entry(st, offset, dts, sample_size, distance, |
1666 |
keyframe ? AVINDEX_KEYFRAME : 0);
|
1667 |
dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", " |
1668 |
"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
|
1669 |
offset, dts, sample_size, distance, keyframe); |
1670 |
distance++; |
1671 |
assert(sample_duration % sc->time_rate == 0);
|
1672 |
dts += sample_duration / sc->time_rate; |
1673 |
offset += sample_size; |
1674 |
} |
1675 |
frag->moof_offset = offset; |
1676 |
sc->sample_count = st->nb_index_entries; |
1677 |
st->duration = dts; |
1678 |
return 0; |
1679 |
} |
1680 |
|
1681 |
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
|
1682 |
/* like the files created with Adobe Premiere 5.0, for samples see */
|
1683 |
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
|
1684 |
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1685 |
{ |
1686 |
int err;
|
1687 |
|
1688 |
if (atom.size < 8) |
1689 |
return 0; /* continue */ |
1690 |
if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */ |
1691 |
url_fskip(pb, atom.size - 4);
|
1692 |
return 0; |
1693 |
} |
1694 |
atom.type = get_le32(pb); |
1695 |
atom.offset += 8;
|
1696 |
atom.size -= 8;
|
1697 |
if (atom.type != MKTAG('m','d','a','t')) { |
1698 |
url_fskip(pb, atom.size); |
1699 |
return 0; |
1700 |
} |
1701 |
err = mov_read_mdat(c, pb, atom); |
1702 |
return err;
|
1703 |
} |
1704 |
|
1705 |
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1706 |
{ |
1707 |
#if CONFIG_ZLIB
|
1708 |
ByteIOContext ctx; |
1709 |
uint8_t *cmov_data; |
1710 |
uint8_t *moov_data; /* uncompressed data */
|
1711 |
long cmov_len, moov_len;
|
1712 |
int ret = -1; |
1713 |
|
1714 |
get_be32(pb); /* dcom atom */
|
1715 |
if (get_le32(pb) != MKTAG('d','c','o','m')) |
1716 |
return -1; |
1717 |
if (get_le32(pb) != MKTAG('z','l','i','b')) { |
1718 |
av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !"); |
1719 |
return -1; |
1720 |
} |
1721 |
get_be32(pb); /* cmvd atom */
|
1722 |
if (get_le32(pb) != MKTAG('c','m','v','d')) |
1723 |
return -1; |
1724 |
moov_len = get_be32(pb); /* uncompressed size */
|
1725 |
cmov_len = atom.size - 6 * 4; |
1726 |
|
1727 |
cmov_data = av_malloc(cmov_len); |
1728 |
if (!cmov_data)
|
1729 |
return -1; |
1730 |
moov_data = av_malloc(moov_len); |
1731 |
if (!moov_data) {
|
1732 |
av_free(cmov_data); |
1733 |
return -1; |
1734 |
} |
1735 |
get_buffer(pb, cmov_data, cmov_len); |
1736 |
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK) |
1737 |
goto free_and_return;
|
1738 |
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0) |
1739 |
goto free_and_return;
|
1740 |
atom.type = MKTAG('m','o','o','v'); |
1741 |
atom.offset = 0;
|
1742 |
atom.size = moov_len; |
1743 |
#ifdef DEBUG
|
1744 |
// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
|
1745 |
#endif
|
1746 |
ret = mov_read_default(c, &ctx, atom); |
1747 |
free_and_return:
|
1748 |
av_free(moov_data); |
1749 |
av_free(cmov_data); |
1750 |
return ret;
|
1751 |
#else
|
1752 |
av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
|
1753 |
return -1; |
1754 |
#endif
|
1755 |
} |
1756 |
|
1757 |
/* edit list atom */
|
1758 |
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOVAtom atom) |
1759 |
{ |
1760 |
MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
|
1761 |
int i, edit_count;
|
1762 |
|
1763 |
get_byte(pb); /* version */
|
1764 |
get_be24(pb); /* flags */
|
1765 |
edit_count= sc->edit_count = get_be32(pb); /* entries */
|
1766 |
|
1767 |
for(i=0; i<edit_count; i++){ |
1768 |
int time;
|
1769 |
get_be32(pb); /* Track duration */
|
1770 |
time = get_be32(pb); /* Media time */
|
1771 |
get_be32(pb); /* Media rate */
|
1772 |
if (i == 0 && time != -1) |
1773 |
sc->time_offset = time; |
1774 |
} |
1775 |
|
1776 |
if(edit_count > 1) |
1777 |
av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
|
1778 |
"a/v desync might occur, patch welcome\n");
|
1779 |
|
1780 |
dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, sc->edit_count); |
1781 |
return 0; |
1782 |
} |
1783 |
|
1784 |
static const MOVParseTableEntry mov_default_parse_table[] = { |
1785 |
{ MKTAG('a','v','s','s'), mov_read_extradata }, |
1786 |
{ MKTAG('c','o','6','4'), mov_read_stco }, |
1787 |
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */ |
1788 |
{ MKTAG('d','i','n','f'), mov_read_default }, |
1789 |
{ MKTAG('d','r','e','f'), mov_read_dref }, |
1790 |
{ MKTAG('e','d','t','s'), mov_read_default }, |
1791 |
{ MKTAG('e','l','s','t'), mov_read_elst }, |
1792 |
{ MKTAG('e','n','d','a'), mov_read_enda }, |
1793 |
{ MKTAG('f','i','e','l'), mov_read_extradata }, |
1794 |
{ MKTAG('f','t','y','p'), mov_read_ftyp }, |
1795 |
{ MKTAG('g','l','b','l'), mov_read_glbl }, |
1796 |
{ MKTAG('h','d','l','r'), mov_read_hdlr }, |
1797 |
{ MKTAG('i','l','s','t'), mov_read_ilst }, |
1798 |
{ MKTAG('j','p','2','h'), mov_read_extradata }, |
1799 |
{ MKTAG('m','d','a','t'), mov_read_mdat }, |
1800 |
{ MKTAG('m','d','h','d'), mov_read_mdhd }, |
1801 |
{ MKTAG('m','d','i','a'), mov_read_default }, |
1802 |
{ MKTAG('m','e','t','a'), mov_read_meta }, |
1803 |
{ MKTAG('m','i','n','f'), mov_read_default }, |
1804 |
{ MKTAG('m','o','o','f'), mov_read_moof }, |
1805 |
{ MKTAG('m','o','o','v'), mov_read_moov }, |
1806 |
{ MKTAG('m','v','e','x'), mov_read_default }, |
1807 |
{ MKTAG('m','v','h','d'), mov_read_mvhd }, |
1808 |
{ MKTAG('S','M','I',' '), mov_read_smi }, /* Sorenson extension ??? */ |
1809 |
{ MKTAG('a','l','a','c'), mov_read_extradata }, /* alac specific atom */ |
1810 |
{ MKTAG('a','v','c','C'), mov_read_glbl }, |
1811 |
{ MKTAG('p','a','s','p'), mov_read_pasp }, |
1812 |
{ MKTAG('s','t','b','l'), mov_read_default }, |
1813 |
{ MKTAG('s','t','c','o'), mov_read_stco }, |
1814 |
{ MKTAG('s','t','s','c'), mov_read_stsc }, |
1815 |
{ MKTAG('s','t','s','d'), mov_read_stsd }, /* sample description */ |
1816 |
{ MKTAG('s','t','s','s'), mov_read_stss }, /* sync sample */ |
1817 |
{ MKTAG('s','t','s','z'), mov_read_stsz }, /* sample size */ |
1818 |
{ MKTAG('s','t','t','s'), mov_read_stts }, |
1819 |
{ MKTAG('t','k','h','d'), mov_read_tkhd }, /* track header */ |
1820 |
{ MKTAG('t','f','h','d'), mov_read_tfhd }, /* track fragment header */ |
1821 |
{ MKTAG('t','r','a','k'), mov_read_trak }, |
1822 |
{ MKTAG('t','r','a','f'), mov_read_default }, |
1823 |
{ MKTAG('t','r','e','x'), mov_read_trex }, |
1824 |
{ MKTAG('t','r','k','n'), mov_read_trkn }, |
1825 |
{ MKTAG('t','r','u','n'), mov_read_trun }, |
1826 |
{ MKTAG('u','d','t','a'), mov_read_default }, |
1827 |
{ MKTAG('w','a','v','e'), mov_read_wave }, |
1828 |
{ MKTAG('e','s','d','s'), mov_read_esds }, |
1829 |
{ MKTAG('w','i','d','e'), mov_read_wide }, /* place holder */ |
1830 |
{ MKTAG('c','m','o','v'), mov_read_cmov }, |
1831 |
{ MKTAG(0xa9,'n','a','m'), mov_read_udta_string }, |
1832 |
{ MKTAG(0xa9,'w','r','t'), mov_read_udta_string }, |
1833 |
{ MKTAG(0xa9,'c','p','y'), mov_read_udta_string }, |
1834 |
{ MKTAG(0xa9,'i','n','f'), mov_read_udta_string }, |
1835 |
{ MKTAG(0xa9,'i','n','f'), mov_read_udta_string }, |
1836 |
{ MKTAG(0xa9,'A','R','T'), mov_read_udta_string }, |
1837 |
{ MKTAG(0xa9,'a','l','b'), mov_read_udta_string }, |
1838 |
{ MKTAG(0xa9,'c','m','t'), mov_read_udta_string }, |
1839 |
{ 0, NULL } |
1840 |
}; |
1841 |
|
1842 |
static int mov_probe(AVProbeData *p) |
1843 |
{ |
1844 |
unsigned int offset; |
1845 |
uint32_t tag; |
1846 |
int score = 0; |
1847 |
|
1848 |
/* check file header */
|
1849 |
offset = 0;
|
1850 |
for(;;) {
|
1851 |
/* ignore invalid offset */
|
1852 |
if ((offset + 8) > (unsigned int)p->buf_size) |
1853 |
return score;
|
1854 |
tag = AV_RL32(p->buf + offset + 4);
|
1855 |
switch(tag) {
|
1856 |
/* check for obvious tags */
|
1857 |
case MKTAG('j','P',' ',' '): /* jpeg 2000 signature */ |
1858 |
case MKTAG('m','o','o','v'): |
1859 |
case MKTAG('m','d','a','t'): |
1860 |
case MKTAG('p','n','o','t'): /* detect movs with preview pics like ew.mov and april.mov */ |
1861 |
case MKTAG('u','d','t','a'): /* Packet Video PVAuthor adds this and a lot of more junk */ |
1862 |
case MKTAG('f','t','y','p'): |
1863 |
return AVPROBE_SCORE_MAX;
|
1864 |
/* those are more common words, so rate then a bit less */
|
1865 |
case MKTAG('e','d','i','w'): /* xdcam files have reverted first tags */ |
1866 |
case MKTAG('w','i','d','e'): |
1867 |
case MKTAG('f','r','e','e'): |
1868 |
case MKTAG('j','u','n','k'): |
1869 |
case MKTAG('p','i','c','t'): |
1870 |
return AVPROBE_SCORE_MAX - 5; |
1871 |
case MKTAG(0x82,0x82,0x7f,0x7d): |
1872 |
case MKTAG('s','k','i','p'): |
1873 |
case MKTAG('u','u','i','d'): |
1874 |
case MKTAG('p','r','f','l'): |
1875 |
offset = AV_RB32(p->buf+offset) + offset; |
1876 |
/* if we only find those cause probedata is too small at least rate them */
|
1877 |
score = AVPROBE_SCORE_MAX - 50;
|
1878 |
break;
|
1879 |
default:
|
1880 |
/* unrecognized tag */
|
1881 |
return score;
|
1882 |
} |
1883 |
} |
1884 |
return score;
|
1885 |
} |
1886 |
|
1887 |
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap) |
1888 |
{ |
1889 |
MOVContext *mov = s->priv_data; |
1890 |
ByteIOContext *pb = s->pb; |
1891 |
int err;
|
1892 |
MOVAtom atom = { 0, 0, 0 }; |
1893 |
|
1894 |
mov->fc = s; |
1895 |
/* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
1896 |
if(!url_is_streamed(pb))
|
1897 |
atom.size = url_fsize(pb); |
1898 |
else
|
1899 |
atom.size = INT64_MAX; |
1900 |
|
1901 |
/* check MOV header */
|
1902 |
if ((err = mov_read_default(mov, pb, atom)) < 0) { |
1903 |
av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
|
1904 |
return err;
|
1905 |
} |
1906 |
if (!mov->found_moov) {
|
1907 |
av_log(s, AV_LOG_ERROR, "moov atom not found\n");
|
1908 |
return -1; |
1909 |
} |
1910 |
dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
|
1911 |
|
1912 |
return 0; |
1913 |
} |
1914 |
|
1915 |
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt) |
1916 |
{ |
1917 |
MOVContext *mov = s->priv_data; |
1918 |
MOVStreamContext *sc = 0;
|
1919 |
AVIndexEntry *sample = 0;
|
1920 |
int64_t best_dts = INT64_MAX; |
1921 |
int i;
|
1922 |
retry:
|
1923 |
for (i = 0; i < s->nb_streams; i++) { |
1924 |
AVStream *st = s->streams[i]; |
1925 |
MOVStreamContext *msc = st->priv_data; |
1926 |
if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
|
1927 |
AVIndexEntry *current_sample = &st->index_entries[msc->current_sample]; |
1928 |
int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, |
1929 |
AV_TIME_BASE, msc->time_scale); |
1930 |
dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts); |
1931 |
if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
|
1932 |
(!url_is_streamed(s->pb) && |
1933 |
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb && |
1934 |
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) || |
1935 |
(FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) { |
1936 |
sample = current_sample; |
1937 |
best_dts = dts; |
1938 |
sc = msc; |
1939 |
} |
1940 |
} |
1941 |
} |
1942 |
if (!sample) {
|
1943 |
mov->found_mdat = 0;
|
1944 |
if (!url_is_streamed(s->pb) ||
|
1945 |
mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 || |
1946 |
url_feof(s->pb)) |
1947 |
return -1; |
1948 |
dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
|
1949 |
goto retry;
|
1950 |
} |
1951 |
/* must be done just before reading, to avoid infinite loop on sample */
|
1952 |
sc->current_sample++; |
1953 |
if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
1954 |
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", |
1955 |
sc->ffindex, sample->pos); |
1956 |
return -1; |
1957 |
} |
1958 |
av_get_packet(sc->pb, pkt, sample->size); |
1959 |
#if CONFIG_DV_DEMUXER
|
1960 |
if (mov->dv_demux && sc->dv_audio_container) {
|
1961 |
dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size); |
1962 |
av_free(pkt->data); |
1963 |
pkt->size = 0;
|
1964 |
if (dv_get_packet(mov->dv_demux, pkt) < 0) |
1965 |
return -1; |
1966 |
} |
1967 |
#endif
|
1968 |
pkt->stream_index = sc->ffindex; |
1969 |
pkt->dts = sample->timestamp; |
1970 |
if (sc->ctts_data) {
|
1971 |
assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
|
1972 |
pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate; |
1973 |
/* update ctts context */
|
1974 |
sc->sample_to_ctime_sample++; |
1975 |
if (sc->sample_to_ctime_index < sc->ctts_count &&
|
1976 |
sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) { |
1977 |
sc->sample_to_ctime_index++; |
1978 |
sc->sample_to_ctime_sample = 0;
|
1979 |
} |
1980 |
if (sc->wrong_dts)
|
1981 |
pkt->dts = AV_NOPTS_VALUE; |
1982 |
} else {
|
1983 |
AVStream *st = s->streams[sc->ffindex]; |
1984 |
int64_t next_dts = (sc->current_sample < sc->sample_count) ? |
1985 |
st->index_entries[sc->current_sample].timestamp : st->duration; |
1986 |
pkt->duration = next_dts - pkt->dts; |
1987 |
pkt->pts = pkt->dts; |
1988 |
} |
1989 |
pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
|
1990 |
pkt->pos = sample->pos; |
1991 |
dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", |
1992 |
pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration); |
1993 |
return 0; |
1994 |
} |
1995 |
|
1996 |
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags) |
1997 |
{ |
1998 |
MOVStreamContext *sc = st->priv_data; |
1999 |
int sample, time_sample;
|
2000 |
int i;
|
2001 |
|
2002 |
sample = av_index_search_timestamp(st, timestamp, flags); |
2003 |
dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample); |
2004 |
if (sample < 0) /* not sure what to do */ |
2005 |
return -1; |
2006 |
sc->current_sample = sample; |
2007 |
dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
|
2008 |
/* adjust ctts index */
|
2009 |
if (sc->ctts_data) {
|
2010 |
time_sample = 0;
|
2011 |
for (i = 0; i < sc->ctts_count; i++) { |
2012 |
int next = time_sample + sc->ctts_data[i].count;
|
2013 |
if (next > sc->current_sample) {
|
2014 |
sc->sample_to_ctime_index = i; |
2015 |
sc->sample_to_ctime_sample = sc->current_sample - time_sample; |
2016 |
break;
|
2017 |
} |
2018 |
time_sample = next; |
2019 |
} |
2020 |
} |
2021 |
return sample;
|
2022 |
} |
2023 |
|
2024 |
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) |
2025 |
{ |
2026 |
AVStream *st; |
2027 |
int64_t seek_timestamp, timestamp; |
2028 |
int sample;
|
2029 |
int i;
|
2030 |
|
2031 |
if (stream_index >= s->nb_streams)
|
2032 |
return -1; |
2033 |
if (sample_time < 0) |
2034 |
sample_time = 0;
|
2035 |
|
2036 |
st = s->streams[stream_index]; |
2037 |
sample = mov_seek_stream(st, sample_time, flags); |
2038 |
if (sample < 0) |
2039 |
return -1; |
2040 |
|
2041 |
/* adjust seek timestamp to found sample timestamp */
|
2042 |
seek_timestamp = st->index_entries[sample].timestamp; |
2043 |
|
2044 |
for (i = 0; i < s->nb_streams; i++) { |
2045 |
st = s->streams[i]; |
2046 |
if (stream_index == i || st->discard == AVDISCARD_ALL)
|
2047 |
continue;
|
2048 |
|
2049 |
timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base); |
2050 |
mov_seek_stream(st, timestamp, flags); |
2051 |
} |
2052 |
return 0; |
2053 |
} |
2054 |
|
2055 |
static int mov_read_close(AVFormatContext *s) |
2056 |
{ |
2057 |
int i, j;
|
2058 |
MOVContext *mov = s->priv_data; |
2059 |
for(i=0; i<s->nb_streams; i++) { |
2060 |
MOVStreamContext *sc = s->streams[i]->priv_data; |
2061 |
av_freep(&sc->ctts_data); |
2062 |
for (j=0; j<sc->drefs_count; j++) |
2063 |
av_freep(&sc->drefs[j].path); |
2064 |
av_freep(&sc->drefs); |
2065 |
if (sc->pb && sc->pb != s->pb)
|
2066 |
url_fclose(sc->pb); |
2067 |
} |
2068 |
if(mov->dv_demux){
|
2069 |
for(i=0; i<mov->dv_fctx->nb_streams; i++){ |
2070 |
av_freep(&mov->dv_fctx->streams[i]->codec); |
2071 |
av_freep(&mov->dv_fctx->streams[i]); |
2072 |
} |
2073 |
av_freep(&mov->dv_fctx); |
2074 |
av_freep(&mov->dv_demux); |
2075 |
} |
2076 |
av_freep(&mov->trex_data); |
2077 |
return 0; |
2078 |
} |
2079 |
|
2080 |
AVInputFormat mov_demuxer = { |
2081 |
"mov,mp4,m4a,3gp,3g2,mj2",
|
2082 |
NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
|
2083 |
sizeof(MOVContext),
|
2084 |
mov_probe, |
2085 |
mov_read_header, |
2086 |
mov_read_packet, |
2087 |
mov_read_close, |
2088 |
mov_read_seek, |
2089 |
}; |