1645 lines
55 KiB
C
1645 lines
55 KiB
C
/*
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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 "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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#ifdef CONFIG_ZLIB
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#include <zlib.h>
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#endif
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/*
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* First version by Francois Revol revol@free.fr
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* Seek function by Gael Chardon gael.dev@4now.net
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*
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* Features and limitations:
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* - reads most of the QT files I have (at least the structure),
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* 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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} MOV_stsc_t;
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typedef struct {
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uint32_t type;
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int64_t offset;
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int64_t size; /* total size (excluding the size and type fields) */
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} MOV_atom_t;
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typedef struct {
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offset_t offset;
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int64_t size;
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} MOV_mdat_t;
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struct MOVParseTableEntry;
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typedef struct MOVStreamContext {
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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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MOV_stts_t *stts_data;
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unsigned int ctts_count;
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MOV_stts_t *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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MOV_stsc_t *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 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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} 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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int64_t mdat_offset;
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int total_streams;
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MOVStreamContext *streams[MAX_STREAMS];
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const struct MOVParseTableEntry *parse_table; /* could be eventually used to change the table */
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/* NOTE: for recursion save to/ restore from local variable! */
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AVPaletteControl palette_control;
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MOV_mdat_t *mdat_list;
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int mdat_count;
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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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} MOVContext;
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/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
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/* those functions parse an atom */
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/* return code:
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1: found what I wanted, exit
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0: continue to parse next atom
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-1: error occured, exit
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*/
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typedef int (*mov_parse_function)(MOVContext *ctx, ByteIOContext *pb, MOV_atom_t atom);
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/* links atom IDs to parse functions */
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typedef struct MOVParseTableEntry {
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uint32_t type;
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mov_parse_function func;
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} MOVParseTableEntry;
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static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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int64_t total_size = 0;
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MOV_atom_t a;
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int i;
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int err = 0;
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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=0L;
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if(atom.size >= 8) {
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a.size = get_be32(pb);
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a.type = get_le32(pb);
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}
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total_size += 8;
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a.offset += 8;
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dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n", 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; c->parse_table[i].type != 0L
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&& c->parse_table[i].type != a.type; i++)
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/* empty */;
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if (c->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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offset_t start_pos = url_ftell(pb);
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int64_t left;
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err = (c->parse_table[i].func)(c, pb, a);
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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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}
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return err;
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}
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static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOV_atom_t 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_byte(pb); get_byte(pb); get_byte(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], ((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
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dprintf(c->fc, "stype= %c%c%c%c\n", *((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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st->codec->codec_id = CODEC_ID_DVD_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 int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t 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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st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
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if (st->codec->extradata) {
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get_buffer(pb, st->codec->extradata, len);
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st->codec->extradata_size = len;
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/* from mplayer */
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if ((*st->codec->extradata >> 3) == 29) {
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st->codec->codec_id = CODEC_ID_MP3ON4;
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}
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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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/* this atom contains actual media data */
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static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOV_atom_t 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->mdat_list = av_realloc(c->mdat_list, (c->mdat_count + 1) * sizeof(*c->mdat_list));
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c->mdat_list[c->mdat_count].offset = atom.offset;
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c->mdat_list[c->mdat_count].size = atom.size;
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c->mdat_count++;
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c->found_mdat=1;
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c->mdat_offset = atom.offset;
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if(c->found_moov)
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return 1; /* found both, just go */
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url_fskip(pb, atom.size);
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return 0; /* now go for moov */
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}
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static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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uint32_t type = get_le32(pb);
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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;
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}
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/* this atom should contain all header atoms */
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static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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int err;
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err = mov_read_default(c, pb, atom);
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/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
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/* so we don't parse the whole file if over a network */
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c->found_moov=1;
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if(c->found_mdat)
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return 1; /* found both, just go */
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return 0; /* now go for mdat */
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}
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static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t 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 version = get_byte(pb);
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int lang;
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if (version > 1)
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return 1; /* unsupported */
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get_byte(pb); get_byte(pb);
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get_byte(pb); /* flags */
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if (version == 1) {
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get_be64(pb);
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get_be64(pb);
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} else {
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get_be32(pb); /* creation time */
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get_be32(pb); /* modification time */
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}
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sc->time_scale = get_be32(pb);
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st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
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lang = get_be16(pb); /* language */
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ff_mov_lang_to_iso639(lang, st->language);
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get_be16(pb); /* quality */
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return 0;
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}
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static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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int version = get_byte(pb); /* version */
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get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
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if (version == 1) {
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get_be64(pb);
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get_be64(pb);
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} else {
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get_be32(pb); /* creation time */
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get_be32(pb); /* modification time */
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}
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c->time_scale = get_be32(pb); /* time scale */
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dprintf(c->fc, "time scale = %i\n", c->time_scale);
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c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
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get_be32(pb); /* preferred scale */
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get_be16(pb); /* preferred volume */
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url_fskip(pb, 10); /* reserved */
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url_fskip(pb, 36); /* display matrix */
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get_be32(pb); /* preview time */
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get_be32(pb); /* preview duration */
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get_be32(pb); /* poster time */
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get_be32(pb); /* selection time */
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get_be32(pb); /* selection duration */
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get_be32(pb); /* current time */
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get_be32(pb); /* next track ID */
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return 0;
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}
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static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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if((uint64_t)atom.size > (1<<30))
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return -1;
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// currently SVQ3 decoder expect full STSD header - so let's fake it
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// this should be fixed and just SMI header should be passed
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av_free(st->codec->extradata);
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st->codec->extradata_size = 0x5a + atom.size;
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st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
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if (st->codec->extradata) {
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memcpy(st->codec->extradata, "SVQ3", 4); // fake
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get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
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dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
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} else
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url_fskip(pb, atom.size);
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return 0;
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}
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static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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int little_endian = get_be16(pb);
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if (little_endian) {
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switch (st->codec->codec_id) {
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case CODEC_ID_PCM_S24BE:
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st->codec->codec_id = CODEC_ID_PCM_S24LE;
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break;
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case CODEC_ID_PCM_S32BE:
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st->codec->codec_id = CODEC_ID_PCM_S32LE;
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break;
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default:
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break;
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}
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}
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return 0;
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}
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/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
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static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
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{
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AVStream *st = c->fc->streams[c->fc->nb_streams-1];
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uint64_t size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
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uint8_t *buf;
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if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
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return -1;
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buf= av_realloc(st->codec->extradata, size);
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if(!buf)
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return -1;
|
|
st->codec->extradata= buf;
|
|
buf+= st->codec->extradata_size;
|
|
st->codec->extradata_size= size - FF_INPUT_BUFFER_PADDING_SIZE;
|
|
AV_WB32( buf , atom.size + 8);
|
|
AV_WL32( buf + 4, atom.type);
|
|
get_buffer(pb, buf + 8, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_wave(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if((uint64_t)atom.size > (1<<30))
|
|
return -1;
|
|
|
|
if (st->codec->codec_id == CODEC_ID_QDM2) {
|
|
// pass all frma atom to codec, needed at least for QDM2
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata_size = atom.size;
|
|
st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (st->codec->extradata) {
|
|
get_buffer(pb, st->codec->extradata, atom.size);
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
} else if (atom.size > 8) { /* to read frma, esds atoms */
|
|
mov_read_default(c, pb, atom);
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_avcC(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if((uint64_t)atom.size > (1<<30))
|
|
return -1;
|
|
|
|
av_free(st->codec->extradata);
|
|
|
|
st->codec->extradata_size = atom.size;
|
|
st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
if (st->codec->extradata) {
|
|
get_buffer(pb, st->codec->extradata, atom.size);
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX/sizeof(int64_t))
|
|
return -1;
|
|
|
|
sc->chunk_count = entries;
|
|
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
|
|
if (!sc->chunk_offsets)
|
|
return -1;
|
|
if (atom.type == MKTAG('s', 't', 'c', 'o')) {
|
|
for(i=0; i<entries; i++) {
|
|
sc->chunk_offsets[i] = get_be32(pb);
|
|
}
|
|
} else if (atom.type == MKTAG('c', 'o', '6', '4')) {
|
|
for(i=0; i<entries; i++) {
|
|
sc->chunk_offsets[i] = get_be64(pb);
|
|
}
|
|
} else
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int entries, frames_per_sample;
|
|
uint32_t format;
|
|
uint8_t codec_name[32];
|
|
|
|
/* for palette traversal */
|
|
int color_depth;
|
|
int color_start;
|
|
int color_count;
|
|
int color_end;
|
|
int color_index;
|
|
int color_dec;
|
|
int color_greyscale;
|
|
unsigned char *color_table;
|
|
int j;
|
|
unsigned char r, g, b;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
while(entries--) { //Parsing Sample description table
|
|
enum CodecID id;
|
|
MOV_atom_t a = { 0, 0, 0 };
|
|
offset_t start_pos = url_ftell(pb);
|
|
int size = get_be32(pb); /* size */
|
|
format = get_le32(pb); /* data format */
|
|
|
|
get_be32(pb); /* reserved */
|
|
get_be16(pb); /* reserved */
|
|
get_be16(pb); /* index */
|
|
|
|
if (st->codec->codec_tag) {
|
|
/* multiple fourcc, just skip for now */
|
|
url_fskip(pb, size - (url_ftell(pb) - start_pos));
|
|
continue;
|
|
}
|
|
|
|
st->codec->codec_tag = format;
|
|
id = codec_get_id(codec_movaudio_tags, format);
|
|
if (id<=0 && (format&0xFFFF) == 'm' + ('s'<<8))
|
|
id = codec_get_id(codec_wav_tags, bswap_32(format)&0xFFFF);
|
|
|
|
if (st->codec->codec_type != CODEC_TYPE_VIDEO && id > 0) {
|
|
st->codec->codec_type = CODEC_TYPE_AUDIO;
|
|
} else if (st->codec->codec_type != CODEC_TYPE_AUDIO && /* do not overwrite codec type */
|
|
format && format != MKTAG('m', 'p', '4', 's')) { /* skip old asf mpeg4 tag */
|
|
id = codec_get_id(codec_movvideo_tags, format);
|
|
if (id <= 0)
|
|
id = codec_get_id(codec_bmp_tags, format);
|
|
if (id > 0)
|
|
st->codec->codec_type = CODEC_TYPE_VIDEO;
|
|
}
|
|
|
|
dprintf(c->fc, "size=%d 4CC= %c%c%c%c codec_type=%d\n",
|
|
size,
|
|
(format >> 0) & 0xff, (format >> 8) & 0xff, (format >> 16) & 0xff, (format >> 24) & 0xff,
|
|
st->codec->codec_type);
|
|
|
|
if(st->codec->codec_type==CODEC_TYPE_VIDEO) {
|
|
st->codec->codec_id = id;
|
|
get_be16(pb); /* version */
|
|
get_be16(pb); /* revision level */
|
|
get_be32(pb); /* vendor */
|
|
get_be32(pb); /* temporal quality */
|
|
get_be32(pb); /* spatial quality */
|
|
|
|
st->codec->width = get_be16(pb); /* width */
|
|
st->codec->height = get_be16(pb); /* height */
|
|
|
|
get_be32(pb); /* horiz resolution */
|
|
get_be32(pb); /* vert resolution */
|
|
get_be32(pb); /* data size, always 0 */
|
|
frames_per_sample = get_be16(pb); /* frames per samples */
|
|
|
|
dprintf(c->fc, "frames/samples = %d\n", frames_per_sample);
|
|
|
|
get_buffer(pb, codec_name, 32); /* codec name, pascal string (FIXME: true for mp4?) */
|
|
if (codec_name[0] <= 31) {
|
|
memcpy(st->codec->codec_name, &codec_name[1],codec_name[0]);
|
|
st->codec->codec_name[codec_name[0]] = 0;
|
|
}
|
|
|
|
st->codec->bits_per_sample = get_be16(pb); /* depth */
|
|
st->codec->color_table_id = get_be16(pb); /* colortable id */
|
|
|
|
/* figure out the palette situation */
|
|
color_depth = st->codec->bits_per_sample & 0x1F;
|
|
color_greyscale = st->codec->bits_per_sample & 0x20;
|
|
|
|
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
|
if ((color_depth == 2) || (color_depth == 4) ||
|
|
(color_depth == 8)) {
|
|
|
|
if (color_greyscale) {
|
|
|
|
/* compute the greyscale palette */
|
|
color_count = 1 << color_depth;
|
|
color_index = 255;
|
|
color_dec = 256 / (color_count - 1);
|
|
for (j = 0; j < color_count; j++) {
|
|
r = g = b = color_index;
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
color_index -= color_dec;
|
|
if (color_index < 0)
|
|
color_index = 0;
|
|
}
|
|
|
|
} else if (st->codec->color_table_id & 0x08) {
|
|
|
|
/* if flag bit 3 is set, use the default palette */
|
|
color_count = 1 << color_depth;
|
|
if (color_depth == 2)
|
|
color_table = ff_qt_default_palette_4;
|
|
else if (color_depth == 4)
|
|
color_table = ff_qt_default_palette_16;
|
|
else
|
|
color_table = ff_qt_default_palette_256;
|
|
|
|
for (j = 0; j < color_count; j++) {
|
|
r = color_table[j * 4 + 0];
|
|
g = color_table[j * 4 + 1];
|
|
b = color_table[j * 4 + 2];
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
|
|
} else {
|
|
|
|
/* load the palette from the file */
|
|
color_start = get_be32(pb);
|
|
color_count = get_be16(pb);
|
|
color_end = get_be16(pb);
|
|
for (j = color_start; j <= color_end; j++) {
|
|
/* each R, G, or B component is 16 bits;
|
|
* only use the top 8 bits; skip alpha bytes
|
|
* up front */
|
|
get_byte(pb);
|
|
get_byte(pb);
|
|
r = get_byte(pb);
|
|
get_byte(pb);
|
|
g = get_byte(pb);
|
|
get_byte(pb);
|
|
b = get_byte(pb);
|
|
get_byte(pb);
|
|
c->palette_control.palette[j] =
|
|
(r << 16) | (g << 8) | (b);
|
|
}
|
|
}
|
|
|
|
st->codec->palctrl = &c->palette_control;
|
|
st->codec->palctrl->palette_changed = 1;
|
|
} else
|
|
st->codec->palctrl = NULL;
|
|
} else if(st->codec->codec_type==CODEC_TYPE_AUDIO) {
|
|
int bits_per_sample;
|
|
uint16_t version = get_be16(pb);
|
|
|
|
st->codec->codec_id = id;
|
|
get_be16(pb); /* revision level */
|
|
get_be32(pb); /* vendor */
|
|
|
|
st->codec->channels = get_be16(pb); /* channel count */
|
|
dprintf(c->fc, "audio channels %d\n", st->codec->channels);
|
|
st->codec->bits_per_sample = get_be16(pb); /* sample size */
|
|
/* do we need to force to 16 for AMR ? */
|
|
|
|
/* handle specific s8 codec */
|
|
get_be16(pb); /* compression id = 0*/
|
|
get_be16(pb); /* packet size = 0 */
|
|
|
|
st->codec->sample_rate = ((get_be32(pb) >> 16));
|
|
|
|
switch (st->codec->codec_id) {
|
|
case CODEC_ID_PCM_S8:
|
|
case CODEC_ID_PCM_U8:
|
|
if (st->codec->bits_per_sample == 16)
|
|
st->codec->codec_id = CODEC_ID_PCM_S16BE;
|
|
break;
|
|
case CODEC_ID_PCM_S16LE:
|
|
case CODEC_ID_PCM_S16BE:
|
|
if (st->codec->bits_per_sample == 8)
|
|
st->codec->codec_id = CODEC_ID_PCM_S8;
|
|
else if (st->codec->bits_per_sample == 24)
|
|
st->codec->codec_id = CODEC_ID_PCM_S24BE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
//Read QT version 1 fields. In version 0 these do not exist.
|
|
dprintf(c->fc, "version =%d, isom =%d\n",version,c->isom);
|
|
if(!c->isom) {
|
|
if(version==1) {
|
|
sc->samples_per_frame = get_be32(pb);
|
|
get_be32(pb); /* bytes per packet */
|
|
sc->bytes_per_frame = get_be32(pb);
|
|
get_be32(pb); /* bytes per sample */
|
|
} else if(version==2) {
|
|
get_be32(pb); /* sizeof struct only */
|
|
st->codec->sample_rate = av_int2dbl(get_be64(pb)); /* float 64 */
|
|
st->codec->channels = get_be32(pb);
|
|
get_be32(pb); /* always 0x7F000000 */
|
|
get_be32(pb); /* bits per channel if sound is uncompressed */
|
|
get_be32(pb); /* lcpm format specific flag */
|
|
get_be32(pb); /* bytes per audio packet if constant */
|
|
get_be32(pb); /* lpcm frames per audio packet if constant */
|
|
}
|
|
}
|
|
|
|
bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
|
|
if (bits_per_sample) {
|
|
st->codec->bits_per_sample = bits_per_sample;
|
|
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
|
|
}
|
|
} else {
|
|
/* other codec type, just skip (rtp, mp4s, tmcd ...) */
|
|
url_fskip(pb, size - (url_ftell(pb) - start_pos));
|
|
}
|
|
/* this will read extra atoms at the end (wave, alac, damr, avcC, SMI ...) */
|
|
a.size = size - (url_ftell(pb) - start_pos);
|
|
if (a.size > 8)
|
|
mov_read_default(c, pb, a);
|
|
else if (a.size > 0)
|
|
url_fskip(pb, a.size);
|
|
}
|
|
|
|
if(st->codec->codec_type==CODEC_TYPE_AUDIO && st->codec->sample_rate==0 && sc->time_scale>1) {
|
|
st->codec->sample_rate= sc->time_scale;
|
|
}
|
|
|
|
/* special codec parameters handling */
|
|
switch (st->codec->codec_id) {
|
|
#ifdef CONFIG_H261_DECODER
|
|
case CODEC_ID_H261:
|
|
#endif
|
|
#ifdef CONFIG_H263_DECODER
|
|
case CODEC_ID_H263:
|
|
#endif
|
|
#ifdef CONFIG_MPEG4_DECODER
|
|
case CODEC_ID_MPEG4:
|
|
#endif
|
|
st->codec->width= 0; /* let decoder init width/height */
|
|
st->codec->height= 0;
|
|
break;
|
|
#ifdef CONFIG_LIBFAAD
|
|
case CODEC_ID_AAC:
|
|
#endif
|
|
#ifdef CONFIG_VORBIS_DECODER
|
|
case CODEC_ID_VORBIS:
|
|
#endif
|
|
case CODEC_ID_MP3ON4:
|
|
st->codec->sample_rate= 0; /* let decoder init parameters properly */
|
|
break;
|
|
#ifdef CONFIG_DV_DEMUXER
|
|
case CODEC_ID_DVAUDIO:
|
|
c->dv_fctx = av_alloc_format_context();
|
|
c->dv_demux = dv_init_demux(c->dv_fctx);
|
|
if (!c->dv_demux) {
|
|
av_log(c->fc, AV_LOG_ERROR, "dv demux context init error\n");
|
|
return -1;
|
|
}
|
|
sc->dv_audio_container = 1;
|
|
st->codec->codec_id = CODEC_ID_PCM_S16LE;
|
|
break;
|
|
#endif
|
|
/* no ifdef since parameters are always those */
|
|
case CODEC_ID_AMR_WB:
|
|
st->codec->sample_rate= 16000;
|
|
st->codec->channels= 1; /* really needed */
|
|
break;
|
|
case CODEC_ID_AMR_NB:
|
|
st->codec->sample_rate= 8000;
|
|
st->codec->channels= 1; /* really needed */
|
|
break;
|
|
case CODEC_ID_MP2:
|
|
case CODEC_ID_MP3:
|
|
st->codec->codec_type = CODEC_TYPE_AUDIO; /* force type after stsd for m1a hdlr */
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
break;
|
|
case CODEC_ID_ADPCM_MS:
|
|
case CODEC_ID_ADPCM_IMA_WAV:
|
|
st->codec->block_align = sc->bytes_per_frame;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX / sizeof(MOV_stsc_t))
|
|
return -1;
|
|
|
|
dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
sc->sample_to_chunk_sz = entries;
|
|
sc->sample_to_chunk = av_malloc(entries * sizeof(MOV_stsc_t));
|
|
if (!sc->sample_to_chunk)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->sample_to_chunk[i].first = get_be32(pb);
|
|
sc->sample_to_chunk[i].count = get_be32(pb);
|
|
sc->sample_to_chunk[i].id = get_be32(pb);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX / sizeof(int))
|
|
return -1;
|
|
|
|
sc->keyframe_count = entries;
|
|
|
|
dprintf(c->fc, "keyframe_count = %d\n", sc->keyframe_count);
|
|
|
|
sc->keyframes = av_malloc(entries * sizeof(int));
|
|
if (!sc->keyframes)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->keyframes[i] = get_be32(pb);
|
|
//dprintf(c->fc, "keyframes[]=%d\n", sc->keyframes[i]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsz(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries, sample_size;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
|
|
sample_size = get_be32(pb);
|
|
if (!sc->sample_size) /* do not overwrite value computed in stsd */
|
|
sc->sample_size = sample_size;
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(int))
|
|
return -1;
|
|
|
|
sc->sample_count = entries;
|
|
if (sample_size)
|
|
return 0;
|
|
|
|
dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, sc->sample_count);
|
|
|
|
sc->sample_sizes = av_malloc(entries * sizeof(int));
|
|
if (!sc->sample_sizes)
|
|
return -1;
|
|
for(i=0; i<entries; i++) {
|
|
sc->sample_sizes[i] = get_be32(pb);
|
|
dprintf(c->fc, "sample_sizes[]=%d\n", sc->sample_sizes[i]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries;
|
|
int64_t duration=0;
|
|
int64_t total_sample_count=0;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(MOV_stts_t))
|
|
return -1;
|
|
|
|
sc->stts_count = entries;
|
|
sc->stts_data = av_malloc(entries * sizeof(MOV_stts_t));
|
|
|
|
dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
sc->time_rate=0;
|
|
|
|
for(i=0; i<entries; i++) {
|
|
int sample_duration;
|
|
int sample_count;
|
|
|
|
sample_count=get_be32(pb);
|
|
sample_duration = get_be32(pb);
|
|
sc->stts_data[i].count= sample_count;
|
|
sc->stts_data[i].duration= sample_duration;
|
|
|
|
sc->time_rate= ff_gcd(sc->time_rate, sample_duration);
|
|
|
|
dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
|
|
|
|
duration+=(int64_t)sample_duration*sample_count;
|
|
total_sample_count+=sample_count;
|
|
}
|
|
|
|
st->nb_frames= total_sample_count;
|
|
if(duration)
|
|
st->duration= duration;
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_ctts(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
unsigned int i, entries;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
if(entries >= UINT_MAX / sizeof(MOV_stts_t))
|
|
return -1;
|
|
|
|
sc->ctts_count = entries;
|
|
sc->ctts_data = av_malloc(entries * sizeof(MOV_stts_t));
|
|
|
|
dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
for(i=0; i<entries; i++) {
|
|
int count =get_be32(pb);
|
|
int duration =get_be32(pb);
|
|
|
|
if (duration < 0) {
|
|
av_log(c->fc, AV_LOG_ERROR, "negative ctts, ignoring\n");
|
|
sc->ctts_count = 0;
|
|
url_fskip(pb, 8 * (entries - i - 1));
|
|
break;
|
|
}
|
|
sc->ctts_data[i].count = count;
|
|
sc->ctts_data[i].duration= duration;
|
|
|
|
sc->time_rate= ff_gcd(sc->time_rate, duration);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trak(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
|
|
st = av_new_stream(c->fc, c->fc->nb_streams);
|
|
if (!st) return -2;
|
|
sc = av_mallocz(sizeof(MOVStreamContext));
|
|
if (!sc) {
|
|
av_free(st);
|
|
return -1;
|
|
}
|
|
|
|
st->priv_data = sc;
|
|
st->codec->codec_type = CODEC_TYPE_DATA;
|
|
st->start_time = 0; /* XXX: check */
|
|
c->streams[c->fc->nb_streams-1] = sc;
|
|
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
|
|
static void mov_parse_udta_string(ByteIOContext *pb, char *str, int size)
|
|
{
|
|
uint16_t str_size = get_be16(pb); /* string length */;
|
|
|
|
get_be16(pb); /* skip language */
|
|
get_buffer(pb, str, FFMIN(size, str_size));
|
|
}
|
|
|
|
static int mov_read_udta(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
uint64_t end = url_ftell(pb) + atom.size;
|
|
|
|
while (url_ftell(pb) + 8 < end) {
|
|
uint32_t tag_size = get_be32(pb);
|
|
uint32_t tag = get_le32(pb);
|
|
uint64_t next = url_ftell(pb) + tag_size - 8;
|
|
|
|
if (next > end) // stop if tag_size is wrong
|
|
break;
|
|
|
|
switch (tag) {
|
|
case MKTAG(0xa9,'n','a','m'):
|
|
mov_parse_udta_string(pb, c->fc->title, sizeof(c->fc->title));
|
|
break;
|
|
case MKTAG(0xa9,'w','r','t'):
|
|
mov_parse_udta_string(pb, c->fc->author, sizeof(c->fc->author));
|
|
break;
|
|
case MKTAG(0xa9,'c','p','y'):
|
|
mov_parse_udta_string(pb, c->fc->copyright, sizeof(c->fc->copyright));
|
|
break;
|
|
case MKTAG(0xa9,'i','n','f'):
|
|
mov_parse_udta_string(pb, c->fc->comment, sizeof(c->fc->comment));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
url_fseek(pb, next, SEEK_SET);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
int version = get_byte(pb);
|
|
|
|
get_byte(pb); get_byte(pb);
|
|
get_byte(pb); /* flags */
|
|
/*
|
|
MOV_TRACK_ENABLED 0x0001
|
|
MOV_TRACK_IN_MOVIE 0x0002
|
|
MOV_TRACK_IN_PREVIEW 0x0004
|
|
MOV_TRACK_IN_POSTER 0x0008
|
|
*/
|
|
|
|
if (version == 1) {
|
|
get_be64(pb);
|
|
get_be64(pb);
|
|
} else {
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
}
|
|
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
|
|
get_be32(pb); /* reserved */
|
|
st->start_time = 0; /* check */
|
|
(version == 1) ? get_be64(pb) : get_be32(pb); /* highlevel (considering edits) duration in movie timebase */
|
|
get_be32(pb); /* reserved */
|
|
get_be32(pb); /* reserved */
|
|
|
|
get_be16(pb); /* layer */
|
|
get_be16(pb); /* alternate group */
|
|
get_be16(pb); /* volume */
|
|
get_be16(pb); /* reserved */
|
|
|
|
url_fskip(pb, 36); /* display matrix */
|
|
|
|
/* those are fixed-point */
|
|
get_be32(pb); /* track width */
|
|
get_be32(pb); /* track height */
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* this atom should be null (from specs), but some buggy files put the 'moov' atom inside it... */
|
|
/* like the files created with Adobe Premiere 5.0, for samples see */
|
|
/* http://graphics.tudelft.nl/~wouter/publications/soundtests/ */
|
|
static int mov_read_wide(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
int err;
|
|
|
|
if (atom.size < 8)
|
|
return 0; /* continue */
|
|
if (get_be32(pb) != 0) { /* 0 sized mdat atom... use the 'wide' atom size */
|
|
url_fskip(pb, atom.size - 4);
|
|
return 0;
|
|
}
|
|
atom.type = get_le32(pb);
|
|
atom.offset += 8;
|
|
atom.size -= 8;
|
|
if (atom.type != MKTAG('m', 'd', 'a', 't')) {
|
|
url_fskip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
err = mov_read_mdat(c, pb, atom);
|
|
return err;
|
|
}
|
|
|
|
static int mov_read_cmov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
#ifdef CONFIG_ZLIB
|
|
ByteIOContext ctx;
|
|
uint8_t *cmov_data;
|
|
uint8_t *moov_data; /* uncompressed data */
|
|
long cmov_len, moov_len;
|
|
int ret;
|
|
|
|
get_be32(pb); /* dcom atom */
|
|
if (get_le32(pb) != MKTAG( 'd', 'c', 'o', 'm' ))
|
|
return -1;
|
|
if (get_le32(pb) != MKTAG( 'z', 'l', 'i', 'b' )) {
|
|
av_log(NULL, AV_LOG_ERROR, "unknown compression for cmov atom !");
|
|
return -1;
|
|
}
|
|
get_be32(pb); /* cmvd atom */
|
|
if (get_le32(pb) != MKTAG( 'c', 'm', 'v', 'd' ))
|
|
return -1;
|
|
moov_len = get_be32(pb); /* uncompressed size */
|
|
cmov_len = atom.size - 6 * 4;
|
|
|
|
cmov_data = av_malloc(cmov_len);
|
|
if (!cmov_data)
|
|
return -1;
|
|
moov_data = av_malloc(moov_len);
|
|
if (!moov_data) {
|
|
av_free(cmov_data);
|
|
return -1;
|
|
}
|
|
get_buffer(pb, cmov_data, cmov_len);
|
|
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
|
|
return -1;
|
|
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
|
|
return -1;
|
|
atom.type = MKTAG( 'm', 'o', 'o', 'v' );
|
|
atom.offset = 0;
|
|
atom.size = moov_len;
|
|
#ifdef DEBUG
|
|
// { int fd = open("/tmp/uncompheader.mov", O_WRONLY | O_CREAT); write(fd, moov_data, moov_len); close(fd); }
|
|
#endif
|
|
ret = mov_read_default(c, &ctx, atom);
|
|
av_free(moov_data);
|
|
av_free(cmov_data);
|
|
return ret;
|
|
#else
|
|
av_log(c->fc, AV_LOG_ERROR, "this file requires zlib support compiled in\n");
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
/* edit list atom */
|
|
static int mov_read_elst(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
|
|
{
|
|
int i, edit_count;
|
|
|
|
get_byte(pb); /* version */
|
|
get_byte(pb); get_byte(pb); get_byte(pb); /* flags */
|
|
edit_count= c->streams[c->fc->nb_streams-1]->edit_count = get_be32(pb); /* entries */
|
|
|
|
for(i=0; i<edit_count; i++){
|
|
get_be32(pb); /* Track duration */
|
|
get_be32(pb); /* Media time */
|
|
get_be32(pb); /* Media rate */
|
|
}
|
|
dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->edit_count);
|
|
return 0;
|
|
}
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = {
|
|
/* mp4 atoms */
|
|
{ MKTAG( 'c', 'o', '6', '4' ), mov_read_stco },
|
|
{ MKTAG( 'c', 't', 't', 's' ), mov_read_ctts }, /* composition time to sample */
|
|
{ MKTAG( 'e', 'd', 't', 's' ), mov_read_default },
|
|
{ MKTAG( 'e', 'l', 's', 't' ), mov_read_elst },
|
|
{ MKTAG( 'e', 'n', 'd', 'a' ), mov_read_enda },
|
|
{ MKTAG( 'f', 'i', 'e', 'l' ), mov_read_extradata },
|
|
{ MKTAG( 'f', 't', 'y', 'p' ), mov_read_ftyp },
|
|
{ MKTAG( 'h', 'd', 'l', 'r' ), mov_read_hdlr },
|
|
{ MKTAG( 'j', 'p', '2', 'h' ), mov_read_extradata },
|
|
{ MKTAG( 'm', 'd', 'a', 't' ), mov_read_mdat },
|
|
{ MKTAG( 'm', 'd', 'h', 'd' ), mov_read_mdhd },
|
|
{ MKTAG( 'm', 'd', 'i', 'a' ), mov_read_default },
|
|
{ MKTAG( 'm', 'i', 'n', 'f' ), mov_read_default },
|
|
{ MKTAG( 'm', 'o', 'o', 'v' ), mov_read_moov },
|
|
{ MKTAG( 'm', 'v', 'h', 'd' ), mov_read_mvhd },
|
|
{ MKTAG( 'S', 'M', 'I', ' ' ), mov_read_smi }, /* Sorenson extension ??? */
|
|
{ MKTAG( 'a', 'l', 'a', 'c' ), mov_read_extradata }, /* alac specific atom */
|
|
{ MKTAG( 'a', 'v', 'c', 'C' ), mov_read_avcC },
|
|
{ MKTAG( 's', 't', 'b', 'l' ), mov_read_default },
|
|
{ MKTAG( 's', 't', 'c', 'o' ), mov_read_stco },
|
|
{ MKTAG( 's', 't', 's', 'c' ), mov_read_stsc },
|
|
{ MKTAG( 's', 't', 's', 'd' ), mov_read_stsd }, /* sample description */
|
|
{ MKTAG( 's', 't', 's', 's' ), mov_read_stss }, /* sync sample */
|
|
{ MKTAG( 's', 't', 's', 'z' ), mov_read_stsz }, /* sample size */
|
|
{ MKTAG( 's', 't', 't', 's' ), mov_read_stts },
|
|
{ MKTAG( 't', 'k', 'h', 'd' ), mov_read_tkhd }, /* track header */
|
|
{ MKTAG( 't', 'r', 'a', 'k' ), mov_read_trak },
|
|
{ MKTAG( 'u', 'd', 't', 'a' ), mov_read_udta },
|
|
{ MKTAG( 'w', 'a', 'v', 'e' ), mov_read_wave },
|
|
{ MKTAG( 'e', 's', 'd', 's' ), mov_read_esds },
|
|
{ MKTAG( 'w', 'i', 'd', 'e' ), mov_read_wide }, /* place holder */
|
|
{ MKTAG( 'c', 'm', 'o', 'v' ), mov_read_cmov },
|
|
{ 0L, NULL }
|
|
};
|
|
|
|
/* XXX: is it sufficient ? */
|
|
static int mov_probe(AVProbeData *p)
|
|
{
|
|
unsigned int offset;
|
|
uint32_t tag;
|
|
int score = 0;
|
|
|
|
/* check file header */
|
|
offset = 0;
|
|
for(;;) {
|
|
/* ignore invalid offset */
|
|
if ((offset + 8) > (unsigned int)p->buf_size)
|
|
return score;
|
|
tag = AV_RL32(p->buf + offset + 4);
|
|
switch(tag) {
|
|
/* check for obvious tags */
|
|
case MKTAG( 'j', 'P', ' ', ' ' ): /* jpeg 2000 signature */
|
|
case MKTAG( 'm', 'o', 'o', 'v' ):
|
|
case MKTAG( 'm', 'd', 'a', 't' ):
|
|
case MKTAG( 'p', 'n', 'o', 't' ): /* detect movs with preview pics like ew.mov and april.mov */
|
|
case MKTAG( 'u', 'd', 't', 'a' ): /* Packet Video PVAuthor adds this and a lot of more junk */
|
|
return AVPROBE_SCORE_MAX;
|
|
/* those are more common words, so rate then a bit less */
|
|
case MKTAG( 'e', 'd', 'i', 'w' ): /* xdcam files have reverted first tags */
|
|
case MKTAG( 'w', 'i', 'd', 'e' ):
|
|
case MKTAG( 'f', 'r', 'e', 'e' ):
|
|
case MKTAG( 'j', 'u', 'n', 'k' ):
|
|
case MKTAG( 'p', 'i', 'c', 't' ):
|
|
return AVPROBE_SCORE_MAX - 5;
|
|
case MKTAG( 'f', 't', 'y', 'p' ):
|
|
case MKTAG( 's', 'k', 'i', 'p' ):
|
|
case MKTAG( 'u', 'u', 'i', 'd' ):
|
|
offset = AV_RB32(p->buf+offset) + offset;
|
|
/* if we only find those cause probedata is too small at least rate them */
|
|
score = AVPROBE_SCORE_MAX - 50;
|
|
break;
|
|
default:
|
|
/* unrecognized tag */
|
|
return score;
|
|
}
|
|
}
|
|
return score;
|
|
}
|
|
|
|
static void mov_build_index(MOVContext *mov, AVStream *st)
|
|
{
|
|
MOVStreamContext *sc = st->priv_data;
|
|
offset_t current_offset;
|
|
int64_t current_dts = 0;
|
|
unsigned int stts_index = 0;
|
|
unsigned int stsc_index = 0;
|
|
unsigned int stss_index = 0;
|
|
unsigned int i, j, k;
|
|
|
|
if (sc->sample_sizes || st->codec->codec_type == CODEC_TYPE_VIDEO || sc->dv_audio_container) {
|
|
unsigned int current_sample = 0;
|
|
unsigned int stts_sample = 0;
|
|
unsigned int keyframe, sample_size;
|
|
unsigned int distance = 0;
|
|
|
|
st->nb_frames = sc->sample_count;
|
|
for (i = 0; i < sc->chunk_count; i++) {
|
|
current_offset = sc->chunk_offsets[i];
|
|
if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
|
|
stsc_index++;
|
|
for (j = 0; j < sc->sample_to_chunk[stsc_index].count; j++) {
|
|
if (current_sample >= sc->sample_count) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "wrong sample count\n");
|
|
goto out;
|
|
}
|
|
keyframe = !sc->keyframe_count || current_sample + 1 == sc->keyframes[stss_index];
|
|
if (keyframe) {
|
|
distance = 0;
|
|
if (stss_index + 1 < sc->keyframe_count)
|
|
stss_index++;
|
|
}
|
|
sample_size = sc->sample_size > 0 ? sc->sample_size : sc->sample_sizes[current_sample];
|
|
dprintf(mov->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", size %d, distance %d, keyframe %d\n",
|
|
st->index, current_sample, current_offset, current_dts, sample_size, distance, keyframe);
|
|
av_add_index_entry(st, current_offset, current_dts, sample_size, distance, keyframe ? AVINDEX_KEYFRAME : 0);
|
|
current_offset += sample_size;
|
|
assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
|
|
current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
|
|
distance++;
|
|
stts_sample++;
|
|
current_sample++;
|
|
if (stts_index + 1 < sc->stts_count && stts_sample == sc->stts_data[stts_index].count) {
|
|
stts_sample = 0;
|
|
stts_index++;
|
|
}
|
|
}
|
|
}
|
|
} else { /* read whole chunk */
|
|
unsigned int chunk_samples, chunk_size, chunk_duration;
|
|
|
|
for (i = 0; i < sc->chunk_count; i++) {
|
|
current_offset = sc->chunk_offsets[i];
|
|
if (stsc_index + 1 < sc->sample_to_chunk_sz && i + 1 == sc->sample_to_chunk[stsc_index + 1].first)
|
|
stsc_index++;
|
|
chunk_samples = sc->sample_to_chunk[stsc_index].count;
|
|
/* get chunk size */
|
|
if (sc->sample_size > 1 || st->codec->codec_id == CODEC_ID_PCM_U8 || st->codec->codec_id == CODEC_ID_PCM_S8)
|
|
chunk_size = chunk_samples * sc->sample_size;
|
|
else if (sc->samples_per_frame > 0 && (chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0))
|
|
chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
|
|
else { /* workaround to find nearest next chunk offset */
|
|
chunk_size = INT_MAX;
|
|
for (j = 0; j < mov->total_streams; j++) {
|
|
MOVStreamContext *msc = mov->streams[j];
|
|
|
|
for (k = msc->next_chunk; k < msc->chunk_count; k++) {
|
|
if (msc->chunk_offsets[k] > current_offset && msc->chunk_offsets[k] - current_offset < chunk_size) {
|
|
chunk_size = msc->chunk_offsets[k] - current_offset;
|
|
msc->next_chunk = k;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* check for last chunk */
|
|
if (chunk_size == INT_MAX)
|
|
for (j = 0; j < mov->mdat_count; j++) {
|
|
dprintf(mov->fc, "mdat %d, offset %"PRIx64", size %"PRId64", current offset %"PRIx64"\n",
|
|
j, mov->mdat_list[j].offset, mov->mdat_list[j].size, current_offset);
|
|
if (mov->mdat_list[j].offset <= current_offset && mov->mdat_list[j].offset + mov->mdat_list[j].size > current_offset)
|
|
chunk_size = mov->mdat_list[j].offset + mov->mdat_list[j].size - current_offset;
|
|
}
|
|
assert(chunk_size != INT_MAX);
|
|
for (j = 0; j < mov->total_streams; j++) {
|
|
mov->streams[j]->next_chunk = 0;
|
|
}
|
|
}
|
|
av_add_index_entry(st, current_offset, current_dts, chunk_size, 0, AVINDEX_KEYFRAME);
|
|
/* get chunk duration */
|
|
chunk_duration = 0;
|
|
while (chunk_samples > 0) {
|
|
if (chunk_samples < sc->stts_data[stts_index].count) {
|
|
chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
|
|
sc->stts_data[stts_index].count -= chunk_samples;
|
|
break;
|
|
} else {
|
|
chunk_duration += sc->stts_data[stts_index].duration * chunk_samples;
|
|
chunk_samples -= sc->stts_data[stts_index].count;
|
|
if (stts_index + 1 < sc->stts_count) {
|
|
stts_index++;
|
|
}
|
|
}
|
|
}
|
|
dprintf(mov->fc, "AVIndex stream %d, chunk %d, offset %"PRIx64", dts %"PRId64", size %d, duration %d\n",
|
|
st->index, i, current_offset, current_dts, chunk_size, chunk_duration);
|
|
assert(chunk_duration % sc->time_rate == 0);
|
|
current_dts += chunk_duration / sc->time_rate;
|
|
}
|
|
}
|
|
out:
|
|
/* adjust sample count to avindex entries */
|
|
sc->sample_count = st->nb_index_entries;
|
|
}
|
|
|
|
static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
ByteIOContext *pb = &s->pb;
|
|
int i, err;
|
|
MOV_atom_t atom = { 0, 0, 0 };
|
|
|
|
mov->fc = s;
|
|
mov->parse_table = mov_default_parse_table;
|
|
|
|
if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
|
atom.size = url_fsize(pb);
|
|
else
|
|
atom.size = INT64_MAX;
|
|
|
|
/* check MOV header */
|
|
err = mov_read_default(mov, pb, atom);
|
|
if (err<0 || (!mov->found_moov && !mov->found_mdat)) {
|
|
av_log(s, AV_LOG_ERROR, "mov: header not found !!! (err:%d, moov:%d, mdat:%d) pos:%"PRId64"\n",
|
|
err, mov->found_moov, mov->found_mdat, url_ftell(pb));
|
|
return -1;
|
|
}
|
|
dprintf(mov->fc, "on_parse_exit_offset=%d\n", (int) url_ftell(pb));
|
|
|
|
/* some cleanup : make sure we are on the mdat atom */
|
|
if(!url_is_streamed(pb) && (url_ftell(pb) != mov->mdat_offset))
|
|
url_fseek(pb, mov->mdat_offset, SEEK_SET);
|
|
|
|
mov->total_streams = s->nb_streams;
|
|
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
MOVStreamContext *sc = mov->streams[i];
|
|
AVStream *st = s->streams[i];
|
|
/* sanity checks */
|
|
if(!sc->stts_count || !sc->chunk_count || !sc->sample_to_chunk_sz ||
|
|
(!sc->sample_size && !sc->sample_count)){
|
|
av_log(s, AV_LOG_ERROR, "missing mandatory atoms, broken header\n");
|
|
sc->sample_count = 0; //ignore track
|
|
continue;
|
|
}
|
|
if(!sc->time_rate)
|
|
sc->time_rate=1;
|
|
if(!sc->time_scale)
|
|
sc->time_scale= mov->time_scale;
|
|
av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
|
|
|
|
if (st->codec->codec_type == CODEC_TYPE_AUDIO && sc->stts_count == 1)
|
|
st->codec->frame_size = sc->stts_data[0].duration;
|
|
|
|
if(st->duration != AV_NOPTS_VALUE){
|
|
assert(st->duration % sc->time_rate == 0);
|
|
st->duration /= sc->time_rate;
|
|
}
|
|
sc->ffindex = i;
|
|
mov_build_index(mov, st);
|
|
}
|
|
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
/* Do not need those anymore. */
|
|
av_freep(&mov->streams[i]->chunk_offsets);
|
|
av_freep(&mov->streams[i]->sample_to_chunk);
|
|
av_freep(&mov->streams[i]->sample_sizes);
|
|
av_freep(&mov->streams[i]->keyframes);
|
|
av_freep(&mov->streams[i]->stts_data);
|
|
}
|
|
av_freep(&mov->mdat_list);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
MOVStreamContext *sc = 0;
|
|
AVIndexEntry *sample = 0;
|
|
int64_t best_dts = INT64_MAX;
|
|
int i;
|
|
|
|
for (i = 0; i < mov->total_streams; i++) {
|
|
MOVStreamContext *msc = mov->streams[i];
|
|
|
|
if (s->streams[i]->discard != AVDISCARD_ALL && msc->current_sample < msc->sample_count) {
|
|
AVIndexEntry *current_sample = &s->streams[i]->index_entries[msc->current_sample];
|
|
int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate, AV_TIME_BASE, msc->time_scale);
|
|
|
|
dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
|
|
if (dts < best_dts) {
|
|
sample = current_sample;
|
|
best_dts = dts;
|
|
sc = msc;
|
|
}
|
|
}
|
|
}
|
|
if (!sample)
|
|
return -1;
|
|
/* must be done just before reading, to avoid infinite loop on sample */
|
|
sc->current_sample++;
|
|
if (sample->pos >= url_fsize(&s->pb)) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n", sc->ffindex, sample->pos);
|
|
return -1;
|
|
}
|
|
#ifdef CONFIG_DV_DEMUXER
|
|
if (sc->dv_audio_container) {
|
|
dv_get_packet(mov->dv_demux, pkt);
|
|
dprintf(s, "dv audio pkt size %d\n", pkt->size);
|
|
} else {
|
|
#endif
|
|
url_fseek(&s->pb, sample->pos, SEEK_SET);
|
|
av_get_packet(&s->pb, pkt, sample->size);
|
|
#ifdef CONFIG_DV_DEMUXER
|
|
if (mov->dv_demux) {
|
|
void *pkt_destruct_func = pkt->destruct;
|
|
dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
|
|
pkt->destruct = pkt_destruct_func;
|
|
}
|
|
}
|
|
#endif
|
|
pkt->stream_index = sc->ffindex;
|
|
pkt->dts = sample->timestamp;
|
|
if (sc->ctts_data) {
|
|
assert(sc->ctts_data[sc->sample_to_ctime_index].duration % sc->time_rate == 0);
|
|
pkt->pts = pkt->dts + sc->ctts_data[sc->sample_to_ctime_index].duration / sc->time_rate;
|
|
/* update ctts context */
|
|
sc->sample_to_ctime_sample++;
|
|
if (sc->sample_to_ctime_index < sc->ctts_count && sc->ctts_data[sc->sample_to_ctime_index].count == sc->sample_to_ctime_sample) {
|
|
sc->sample_to_ctime_index++;
|
|
sc->sample_to_ctime_sample = 0;
|
|
}
|
|
} else {
|
|
pkt->pts = pkt->dts;
|
|
}
|
|
pkt->flags |= sample->flags & AVINDEX_KEYFRAME ? PKT_FLAG_KEY : 0;
|
|
pkt->pos = sample->pos;
|
|
dprintf(s, "stream %d, pts %"PRId64", dts %"PRId64", pos 0x%"PRIx64", duration %d\n", pkt->stream_index, pkt->pts, pkt->dts, pkt->pos, pkt->duration);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_seek_stream(AVStream *st, int64_t timestamp, int flags)
|
|
{
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int sample, time_sample;
|
|
int i;
|
|
|
|
sample = av_index_search_timestamp(st, timestamp, flags);
|
|
dprintf(st->codec, "stream %d, timestamp %"PRId64", sample %d\n", st->index, timestamp, sample);
|
|
if (sample < 0) /* not sure what to do */
|
|
return -1;
|
|
sc->current_sample = sample;
|
|
dprintf(st->codec, "stream %d, found sample %d\n", st->index, sc->current_sample);
|
|
/* adjust ctts index */
|
|
if (sc->ctts_data) {
|
|
time_sample = 0;
|
|
for (i = 0; i < sc->ctts_count; i++) {
|
|
int next = time_sample + sc->ctts_data[i].count;
|
|
if (next > sc->current_sample) {
|
|
sc->sample_to_ctime_index = i;
|
|
sc->sample_to_ctime_sample = sc->current_sample - time_sample;
|
|
break;
|
|
}
|
|
time_sample = next;
|
|
}
|
|
}
|
|
return sample;
|
|
}
|
|
|
|
static int mov_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
|
|
{
|
|
AVStream *st;
|
|
int64_t seek_timestamp, timestamp;
|
|
int sample;
|
|
int i;
|
|
|
|
if (stream_index >= s->nb_streams)
|
|
return -1;
|
|
|
|
st = s->streams[stream_index];
|
|
sample = mov_seek_stream(st, sample_time, flags);
|
|
if (sample < 0)
|
|
return -1;
|
|
|
|
/* adjust seek timestamp to found sample timestamp */
|
|
seek_timestamp = st->index_entries[sample].timestamp;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
if (stream_index == i || st->discard == AVDISCARD_ALL)
|
|
continue;
|
|
|
|
timestamp = av_rescale_q(seek_timestamp, s->streams[stream_index]->time_base, st->time_base);
|
|
mov_seek_stream(st, timestamp, flags);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_close(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
MOVContext *mov = s->priv_data;
|
|
for(i=0; i<mov->total_streams; i++) {
|
|
av_freep(&mov->streams[i]->ctts_data);
|
|
av_freep(&mov->streams[i]);
|
|
}
|
|
if(mov->dv_demux){
|
|
for(i=0; i<mov->dv_fctx->nb_streams; i++){
|
|
av_freep(&mov->dv_fctx->streams[i]->codec);
|
|
av_freep(&mov->dv_fctx->streams[i]);
|
|
}
|
|
av_freep(&mov->dv_fctx);
|
|
av_freep(&mov->dv_demux);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat mov_demuxer = {
|
|
"mov,mp4,m4a,3gp,3g2,mj2",
|
|
"QuickTime/MPEG4/Motion JPEG 2000 format",
|
|
sizeof(MOVContext),
|
|
mov_probe,
|
|
mov_read_header,
|
|
mov_read_packet,
|
|
mov_read_close,
|
|
mov_read_seek,
|
|
};
|