2118 lines
73 KiB
C
2118 lines
73 KiB
C
/*
|
|
* MOV demuxer
|
|
* Copyright (c) 2001 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <limits.h>
|
|
|
|
//#define DEBUG
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "avformat.h"
|
|
#include "riff.h"
|
|
#include "isom.h"
|
|
#include "dv.h"
|
|
#include "libavcodec/mpeg4audio.h"
|
|
#include "libavcodec/mpegaudiodata.h"
|
|
|
|
#if CONFIG_ZLIB
|
|
#include <zlib.h>
|
|
#endif
|
|
|
|
/*
|
|
* First version by Francois Revol revol@free.fr
|
|
* Seek function by Gael Chardon gael.dev@4now.net
|
|
*
|
|
* Features and limitations:
|
|
* - reads most of the QT files I have (at least the structure),
|
|
* Sample QuickTime files with mp3 audio can be found at: http://www.3ivx.com/showcase.html
|
|
* - the code is quite ugly... maybe I won't do it recursive next time :-)
|
|
*
|
|
* Funny I didn't know about http://sourceforge.net/projects/qt-ffmpeg/
|
|
* when coding this :) (it's a writer anyway)
|
|
*
|
|
* Reference documents:
|
|
* http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
|
|
* Apple:
|
|
* http://developer.apple.com/documentation/QuickTime/QTFF/
|
|
* http://developer.apple.com/documentation/QuickTime/QTFF/qtff.pdf
|
|
* QuickTime is a trademark of Apple (AFAIK :))
|
|
*/
|
|
|
|
#include "qtpalette.h"
|
|
|
|
|
|
#undef NDEBUG
|
|
#include <assert.h>
|
|
|
|
/* the QuickTime file format is quite convoluted...
|
|
* it has lots of index tables, each indexing something in another one...
|
|
* Here we just use what is needed to read the chunks
|
|
*/
|
|
|
|
typedef struct {
|
|
int first;
|
|
int count;
|
|
int id;
|
|
} MOVStsc;
|
|
|
|
typedef struct {
|
|
uint32_t type;
|
|
char *path;
|
|
} MOVDref;
|
|
|
|
typedef struct {
|
|
uint32_t type;
|
|
int64_t offset;
|
|
int64_t size; /* total size (excluding the size and type fields) */
|
|
} MOVAtom;
|
|
|
|
struct MOVParseTableEntry;
|
|
|
|
typedef struct {
|
|
unsigned track_id;
|
|
uint64_t base_data_offset;
|
|
uint64_t moof_offset;
|
|
unsigned stsd_id;
|
|
unsigned duration;
|
|
unsigned size;
|
|
unsigned flags;
|
|
} MOVFragment;
|
|
|
|
typedef struct {
|
|
unsigned track_id;
|
|
unsigned stsd_id;
|
|
unsigned duration;
|
|
unsigned size;
|
|
unsigned flags;
|
|
} MOVTrackExt;
|
|
|
|
typedef struct MOVStreamContext {
|
|
ByteIOContext *pb;
|
|
int ffindex; /* the ffmpeg stream id */
|
|
int next_chunk;
|
|
unsigned int chunk_count;
|
|
int64_t *chunk_offsets;
|
|
unsigned int stts_count;
|
|
MOVStts *stts_data;
|
|
unsigned int ctts_count;
|
|
MOVStts *ctts_data;
|
|
unsigned int stsc_count;
|
|
MOVStsc *stsc_data;
|
|
int ctts_index;
|
|
int ctts_sample;
|
|
unsigned int sample_size;
|
|
unsigned int sample_count;
|
|
int *sample_sizes;
|
|
unsigned int keyframe_count;
|
|
int *keyframes;
|
|
int time_scale;
|
|
int time_rate;
|
|
int time_offset; ///< time offset of the first edit list entry
|
|
int current_sample;
|
|
unsigned int bytes_per_frame;
|
|
unsigned int samples_per_frame;
|
|
int dv_audio_container;
|
|
int pseudo_stream_id; ///< -1 means demux all ids
|
|
int16_t audio_cid; ///< stsd audio compression id
|
|
unsigned drefs_count;
|
|
MOVDref *drefs;
|
|
int dref_id;
|
|
int wrong_dts; ///< dts are wrong due to negative ctts
|
|
int width; ///< tkhd width
|
|
int height; ///< tkhd height
|
|
} MOVStreamContext;
|
|
|
|
typedef struct MOVContext {
|
|
AVFormatContext *fc;
|
|
int time_scale;
|
|
int64_t duration; /* duration of the longest track */
|
|
int found_moov; /* when both 'moov' and 'mdat' sections has been found */
|
|
int found_mdat; /* we suppose we have enough data to read the file */
|
|
AVPaletteControl palette_control;
|
|
DVDemuxContext *dv_demux;
|
|
AVFormatContext *dv_fctx;
|
|
int isom; /* 1 if file is ISO Media (mp4/3gp) */
|
|
MOVFragment fragment; ///< current fragment in moof atom
|
|
MOVTrackExt *trex_data;
|
|
unsigned trex_count;
|
|
int itunes_metadata; ///< metadata are itunes style
|
|
} MOVContext;
|
|
|
|
|
|
/* XXX: it's the first time I make a recursive parser I think... sorry if it's ugly :P */
|
|
|
|
/* those functions parse an atom */
|
|
/* return code:
|
|
0: continue to parse next atom
|
|
<0: error occurred, exit
|
|
*/
|
|
/* links atom IDs to parse functions */
|
|
typedef struct MOVParseTableEntry {
|
|
uint32_t type;
|
|
int (*parse)(MOVContext *ctx, ByteIOContext *pb, MOVAtom atom);
|
|
} MOVParseTableEntry;
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[];
|
|
|
|
static int mov_read_default(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
int64_t total_size = 0;
|
|
MOVAtom a;
|
|
int i;
|
|
int err = 0;
|
|
|
|
a.offset = atom.offset;
|
|
|
|
if (atom.size < 0)
|
|
atom.size = INT64_MAX;
|
|
while(((total_size + 8) < atom.size) && !url_feof(pb) && !err) {
|
|
a.size = atom.size;
|
|
a.type=0;
|
|
if(atom.size >= 8) {
|
|
a.size = get_be32(pb);
|
|
a.type = get_le32(pb);
|
|
}
|
|
total_size += 8;
|
|
a.offset += 8;
|
|
dprintf(c->fc, "type: %08x %.4s sz: %"PRIx64" %"PRIx64" %"PRIx64"\n",
|
|
a.type, (char*)&a.type, a.size, atom.size, total_size);
|
|
if (a.size == 1) { /* 64 bit extended size */
|
|
a.size = get_be64(pb) - 8;
|
|
a.offset += 8;
|
|
total_size += 8;
|
|
}
|
|
if (a.size == 0) {
|
|
a.size = atom.size - total_size;
|
|
if (a.size <= 8)
|
|
break;
|
|
}
|
|
a.size -= 8;
|
|
if(a.size < 0)
|
|
break;
|
|
a.size = FFMIN(a.size, atom.size - total_size);
|
|
|
|
for (i = 0; mov_default_parse_table[i].type != 0
|
|
&& mov_default_parse_table[i].type != a.type; i++)
|
|
/* empty */;
|
|
|
|
if (mov_default_parse_table[i].type == 0) { /* skip leaf atoms data */
|
|
url_fskip(pb, a.size);
|
|
} else {
|
|
int64_t start_pos = url_ftell(pb);
|
|
int64_t left;
|
|
err = mov_default_parse_table[i].parse(c, pb, a);
|
|
if (url_is_streamed(pb) && c->found_moov && c->found_mdat)
|
|
break;
|
|
left = a.size - url_ftell(pb) + start_pos;
|
|
if (left > 0) /* skip garbage at atom end */
|
|
url_fskip(pb, left);
|
|
}
|
|
|
|
a.offset += a.size;
|
|
total_size += a.size;
|
|
}
|
|
|
|
if (!err && total_size < atom.size && atom.size < 0x7ffff)
|
|
url_fskip(pb, atom.size - total_size);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mov_read_dref(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int entries, i, j;
|
|
|
|
get_be32(pb); // version + flags
|
|
entries = get_be32(pb);
|
|
if (entries >= UINT_MAX / sizeof(*sc->drefs))
|
|
return -1;
|
|
sc->drefs = av_mallocz(entries * sizeof(*sc->drefs));
|
|
if (!sc->drefs)
|
|
return AVERROR(ENOMEM);
|
|
sc->drefs_count = entries;
|
|
|
|
for (i = 0; i < sc->drefs_count; i++) {
|
|
MOVDref *dref = &sc->drefs[i];
|
|
uint32_t size = get_be32(pb);
|
|
int64_t next = url_ftell(pb) + size - 4;
|
|
|
|
dref->type = get_le32(pb);
|
|
get_be32(pb); // version + flags
|
|
dprintf(c->fc, "type %.4s size %d\n", (char*)&dref->type, size);
|
|
|
|
if (dref->type == MKTAG('a','l','i','s') && size > 150) {
|
|
/* macintosh alias record */
|
|
uint16_t volume_len, len;
|
|
char volume[28];
|
|
int16_t type;
|
|
|
|
url_fskip(pb, 10);
|
|
|
|
volume_len = get_byte(pb);
|
|
volume_len = FFMIN(volume_len, 27);
|
|
get_buffer(pb, volume, 27);
|
|
volume[volume_len] = 0;
|
|
av_log(c->fc, AV_LOG_DEBUG, "volume %s, len %d\n", volume, volume_len);
|
|
|
|
url_fskip(pb, 112);
|
|
|
|
for (type = 0; type != -1 && url_ftell(pb) < next; ) {
|
|
type = get_be16(pb);
|
|
len = get_be16(pb);
|
|
av_log(c->fc, AV_LOG_DEBUG, "type %d, len %d\n", type, len);
|
|
if (len&1)
|
|
len += 1;
|
|
if (type == 2) { // absolute path
|
|
av_free(dref->path);
|
|
dref->path = av_mallocz(len+1);
|
|
if (!dref->path)
|
|
return AVERROR(ENOMEM);
|
|
get_buffer(pb, dref->path, len);
|
|
if (len > volume_len && !strncmp(dref->path, volume, volume_len)) {
|
|
len -= volume_len;
|
|
memmove(dref->path, dref->path+volume_len, len);
|
|
dref->path[len] = 0;
|
|
}
|
|
for (j = 0; j < len; j++)
|
|
if (dref->path[j] == ':')
|
|
dref->path[j] = '/';
|
|
av_log(c->fc, AV_LOG_DEBUG, "path %s\n", dref->path);
|
|
} else
|
|
url_fskip(pb, len);
|
|
}
|
|
}
|
|
url_fseek(pb, next, SEEK_SET);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_hdlr(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
uint32_t type;
|
|
uint32_t ctype;
|
|
|
|
get_byte(pb); /* version */
|
|
get_be24(pb); /* flags */
|
|
|
|
/* component type */
|
|
ctype = get_le32(pb);
|
|
type = get_le32(pb); /* component subtype */
|
|
|
|
dprintf(c->fc, "ctype= %c%c%c%c (0x%08x)\n", *((char *)&ctype), ((char *)&ctype)[1],
|
|
((char *)&ctype)[2], ((char *)&ctype)[3], (int) ctype);
|
|
dprintf(c->fc, "stype= %c%c%c%c\n",
|
|
*((char *)&type), ((char *)&type)[1], ((char *)&type)[2], ((char *)&type)[3]);
|
|
if(!ctype)
|
|
c->isom = 1;
|
|
if (type == MKTAG('v','i','d','e'))
|
|
st->codec->codec_type = CODEC_TYPE_VIDEO;
|
|
else if(type == MKTAG('s','o','u','n'))
|
|
st->codec->codec_type = CODEC_TYPE_AUDIO;
|
|
else if(type == MKTAG('m','1','a',' '))
|
|
st->codec->codec_id = CODEC_ID_MP2;
|
|
else if(type == MKTAG('s','u','b','p')) {
|
|
st->codec->codec_type = CODEC_TYPE_SUBTITLE;
|
|
}
|
|
get_be32(pb); /* component manufacture */
|
|
get_be32(pb); /* component flags */
|
|
get_be32(pb); /* component flags mask */
|
|
|
|
if(atom.size <= 24)
|
|
return 0; /* nothing left to read */
|
|
|
|
url_fskip(pb, atom.size - (url_ftell(pb) - atom.offset));
|
|
return 0;
|
|
}
|
|
|
|
static int mp4_read_descr_len(ByteIOContext *pb)
|
|
{
|
|
int len = 0;
|
|
int count = 4;
|
|
while (count--) {
|
|
int c = get_byte(pb);
|
|
len = (len << 7) | (c & 0x7f);
|
|
if (!(c & 0x80))
|
|
break;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static int mp4_read_descr(MOVContext *c, ByteIOContext *pb, int *tag)
|
|
{
|
|
int len;
|
|
*tag = get_byte(pb);
|
|
len = mp4_read_descr_len(pb);
|
|
dprintf(c->fc, "MPEG4 description: tag=0x%02x len=%d\n", *tag, len);
|
|
return len;
|
|
}
|
|
|
|
#define MP4ESDescrTag 0x03
|
|
#define MP4DecConfigDescrTag 0x04
|
|
#define MP4DecSpecificDescrTag 0x05
|
|
|
|
static const AVCodecTag mp4_audio_types[] = {
|
|
{ CODEC_ID_MP3ON4, 29 }, /* old mp3on4 draft */
|
|
{ CODEC_ID_MP3ON4, 32 }, /* layer 1 */
|
|
{ CODEC_ID_MP3ON4, 33 }, /* layer 2 */
|
|
{ CODEC_ID_MP3ON4, 34 }, /* layer 3 */
|
|
{ CODEC_ID_NONE, 0 },
|
|
};
|
|
|
|
static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
int tag, len;
|
|
|
|
get_be32(pb); /* version + flags */
|
|
len = mp4_read_descr(c, pb, &tag);
|
|
if (tag == MP4ESDescrTag) {
|
|
get_be16(pb); /* ID */
|
|
get_byte(pb); /* priority */
|
|
} else
|
|
get_be16(pb); /* ID */
|
|
|
|
len = mp4_read_descr(c, pb, &tag);
|
|
if (tag == MP4DecConfigDescrTag) {
|
|
int object_type_id = get_byte(pb);
|
|
get_byte(pb); /* stream type */
|
|
get_be24(pb); /* buffer size db */
|
|
get_be32(pb); /* max bitrate */
|
|
get_be32(pb); /* avg bitrate */
|
|
|
|
st->codec->codec_id= codec_get_id(ff_mp4_obj_type, object_type_id);
|
|
dprintf(c->fc, "esds object type id %d\n", object_type_id);
|
|
len = mp4_read_descr(c, pb, &tag);
|
|
if (tag == MP4DecSpecificDescrTag) {
|
|
dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
|
|
if((uint64_t)len > (1<<30))
|
|
return -1;
|
|
st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
get_buffer(pb, st->codec->extradata, len);
|
|
st->codec->extradata_size = len;
|
|
if (st->codec->codec_id == CODEC_ID_AAC) {
|
|
MPEG4AudioConfig cfg;
|
|
ff_mpeg4audio_get_config(&cfg, st->codec->extradata,
|
|
st->codec->extradata_size);
|
|
if (cfg.chan_config > 7)
|
|
return -1;
|
|
st->codec->channels = ff_mpeg4audio_channels[cfg.chan_config];
|
|
if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
|
|
st->codec->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
|
|
else
|
|
st->codec->sample_rate = cfg.sample_rate; // ext sample rate ?
|
|
dprintf(c->fc, "mp4a config channels %d obj %d ext obj %d "
|
|
"sample rate %d ext sample rate %d\n", st->codec->channels,
|
|
cfg.object_type, cfg.ext_object_type,
|
|
cfg.sample_rate, cfg.ext_sample_rate);
|
|
if (!(st->codec->codec_id = codec_get_id(mp4_audio_types,
|
|
cfg.object_type)))
|
|
st->codec->codec_id = CODEC_ID_AAC;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_pasp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
const int num = get_be32(pb);
|
|
const int den = get_be32(pb);
|
|
AVStream * const st = c->fc->streams[c->fc->nb_streams-1];
|
|
if (den != 0) {
|
|
if ((st->sample_aspect_ratio.den != 1 || st->sample_aspect_ratio.num) && // default
|
|
(den != st->sample_aspect_ratio.den || num != st->sample_aspect_ratio.num))
|
|
av_log(c->fc, AV_LOG_WARNING,
|
|
"sample aspect ratio already set to %d:%d, overriding by 'pasp' atom\n",
|
|
st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
|
|
st->sample_aspect_ratio.num = num;
|
|
st->sample_aspect_ratio.den = den;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* this atom contains actual media data */
|
|
static int mov_read_mdat(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
if(atom.size == 0) /* wrong one (MP4) */
|
|
return 0;
|
|
c->found_mdat=1;
|
|
return 0; /* now go for moov */
|
|
}
|
|
|
|
static int mov_read_ftyp(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
uint32_t type = get_le32(pb);
|
|
|
|
if (type != MKTAG('q','t',' ',' '))
|
|
c->isom = 1;
|
|
av_log(c->fc, AV_LOG_DEBUG, "ISO: File Type Major Brand: %.4s\n",(char *)&type);
|
|
get_be32(pb); /* minor version */
|
|
url_fskip(pb, atom.size - 8);
|
|
return 0;
|
|
}
|
|
|
|
/* this atom should contain all header atoms */
|
|
static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
if (mov_read_default(c, pb, atom) < 0)
|
|
return -1;
|
|
/* we parsed the 'moov' atom, we can terminate the parsing as soon as we find the 'mdat' */
|
|
/* so we don't parse the whole file if over a network */
|
|
c->found_moov=1;
|
|
return 0; /* now go for mdat */
|
|
}
|
|
|
|
static int mov_read_moof(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
c->fragment.moof_offset = url_ftell(pb) - 8;
|
|
dprintf(c->fc, "moof offset %llx\n", c->fragment.moof_offset);
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
|
|
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int version = get_byte(pb);
|
|
char language[4] = {0};
|
|
unsigned lang;
|
|
|
|
if (version > 1)
|
|
return -1; /* unsupported */
|
|
|
|
get_be24(pb); /* flags */
|
|
if (version == 1) {
|
|
get_be64(pb);
|
|
get_be64(pb);
|
|
} else {
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
}
|
|
|
|
sc->time_scale = get_be32(pb);
|
|
st->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
|
|
|
|
lang = get_be16(pb); /* language */
|
|
if (ff_mov_lang_to_iso639(lang, language))
|
|
av_metadata_set(&st->metadata, "language", language);
|
|
get_be16(pb); /* quality */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_mvhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
int version = get_byte(pb); /* version */
|
|
get_be24(pb); /* flags */
|
|
|
|
if (version == 1) {
|
|
get_be64(pb);
|
|
get_be64(pb);
|
|
} else {
|
|
get_be32(pb); /* creation time */
|
|
get_be32(pb); /* modification time */
|
|
}
|
|
c->time_scale = get_be32(pb); /* time scale */
|
|
|
|
dprintf(c->fc, "time scale = %i\n", c->time_scale);
|
|
|
|
c->duration = (version == 1) ? get_be64(pb) : get_be32(pb); /* duration */
|
|
get_be32(pb); /* preferred scale */
|
|
|
|
get_be16(pb); /* preferred volume */
|
|
|
|
url_fskip(pb, 10); /* reserved */
|
|
|
|
url_fskip(pb, 36); /* display matrix */
|
|
|
|
get_be32(pb); /* preview time */
|
|
get_be32(pb); /* preview duration */
|
|
get_be32(pb); /* poster time */
|
|
get_be32(pb); /* selection time */
|
|
get_be32(pb); /* selection duration */
|
|
get_be32(pb); /* current time */
|
|
get_be32(pb); /* next track ID */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_smi(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
|
|
if((uint64_t)atom.size > (1<<30))
|
|
return -1;
|
|
|
|
// currently SVQ3 decoder expect full STSD header - so let's fake it
|
|
// this should be fixed and just SMI header should be passed
|
|
av_free(st->codec->extradata);
|
|
st->codec->extradata = av_mallocz(atom.size + 0x5a + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = 0x5a + atom.size;
|
|
memcpy(st->codec->extradata, "SVQ3", 4); // fake
|
|
get_buffer(pb, st->codec->extradata + 0x5a, atom.size);
|
|
dprintf(c->fc, "Reading SMI %"PRId64" %s\n", atom.size, st->codec->extradata + 0x5a);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_enda(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
int little_endian = get_be16(pb);
|
|
|
|
dprintf(c->fc, "enda %d\n", little_endian);
|
|
if (little_endian == 1) {
|
|
switch (st->codec->codec_id) {
|
|
case CODEC_ID_PCM_S24BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_S24LE;
|
|
break;
|
|
case CODEC_ID_PCM_S32BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_S32LE;
|
|
break;
|
|
case CODEC_ID_PCM_F32BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_F32LE;
|
|
break;
|
|
case CODEC_ID_PCM_F64BE:
|
|
st->codec->codec_id = CODEC_ID_PCM_F64LE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* FIXME modify qdm2/svq3/h264 decoders to take full atom as extradata */
|
|
static int mov_read_extradata(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
uint64_t size;
|
|
uint8_t *buf;
|
|
|
|
if (c->fc->nb_streams < 1) // will happen with jp2 files
|
|
return 0;
|
|
st= c->fc->streams[c->fc->nb_streams-1];
|
|
size= (uint64_t)st->codec->extradata_size + atom.size + 8 + FF_INPUT_BUFFER_PADDING_SIZE;
|
|
if(size > INT_MAX || (uint64_t)atom.size > INT_MAX)
|
|
return -1;
|
|
buf= av_realloc(st->codec->extradata, size);
|
|
if(!buf)
|
|
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, MOVAtom 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 = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = atom.size;
|
|
get_buffer(pb, st->codec->extradata, atom.size);
|
|
} else if (atom.size > 8) { /* to read frma, esds atoms */
|
|
if (mov_read_default(c, pb, atom) < 0)
|
|
return -1;
|
|
} else
|
|
url_fskip(pb, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* This function reads atom content and puts data in extradata without tag
|
|
* nor size unlike mov_read_extradata.
|
|
*/
|
|
static int mov_read_glbl(MOVContext *c, ByteIOContext *pb, MOVAtom 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 = av_mallocz(atom.size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->extradata_size = atom.size;
|
|
get_buffer(pb, st->codec->extradata, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stco(MOVContext *c, ByteIOContext *pb, MOVAtom 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_be24(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
if(entries >= UINT_MAX/sizeof(int64_t))
|
|
return -1;
|
|
|
|
sc->chunk_offsets = av_malloc(entries * sizeof(int64_t));
|
|
if (!sc->chunk_offsets)
|
|
return AVERROR(ENOMEM);
|
|
sc->chunk_count = entries;
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* Compute codec id for 'lpcm' tag.
|
|
* See CoreAudioTypes and AudioStreamBasicDescription at Apple.
|
|
*/
|
|
static enum CodecID mov_get_lpcm_codec_id(int bps, int flags)
|
|
{
|
|
if (flags & 1) { // floating point
|
|
if (flags & 2) { // big endian
|
|
if (bps == 32) return CODEC_ID_PCM_F32BE;
|
|
else if (bps == 64) return CODEC_ID_PCM_F64BE;
|
|
} else {
|
|
if (bps == 32) return CODEC_ID_PCM_F32LE;
|
|
else if (bps == 64) return CODEC_ID_PCM_F64LE;
|
|
}
|
|
} else {
|
|
if (flags & 2) {
|
|
if (bps == 8)
|
|
// signed integer
|
|
if (flags & 4) return CODEC_ID_PCM_S8;
|
|
else return CODEC_ID_PCM_U8;
|
|
else if (bps == 16) return CODEC_ID_PCM_S16BE;
|
|
else if (bps == 24) return CODEC_ID_PCM_S24BE;
|
|
else if (bps == 32) return CODEC_ID_PCM_S32BE;
|
|
} else {
|
|
if (bps == 8)
|
|
if (flags & 4) return CODEC_ID_PCM_S8;
|
|
else return CODEC_ID_PCM_U8;
|
|
else if (bps == 16) return CODEC_ID_PCM_S16LE;
|
|
else if (bps == 24) return CODEC_ID_PCM_S24LE;
|
|
else if (bps == 32) return CODEC_ID_PCM_S32LE;
|
|
}
|
|
}
|
|
return CODEC_ID_NONE;
|
|
}
|
|
|
|
static int mov_read_stsd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int j, entries, pseudo_stream_id;
|
|
|
|
get_byte(pb); /* version */
|
|
get_be24(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
for(pseudo_stream_id=0; pseudo_stream_id<entries; pseudo_stream_id++) {
|
|
//Parsing Sample description table
|
|
enum CodecID id;
|
|
int dref_id;
|
|
MOVAtom a = { 0, 0, 0 };
|
|
int64_t start_pos = url_ftell(pb);
|
|
int size = get_be32(pb); /* size */
|
|
uint32_t format = get_le32(pb); /* data format */
|
|
|
|
get_be32(pb); /* reserved */
|
|
get_be16(pb); /* reserved */
|
|
dref_id = get_be16(pb);
|
|
|
|
if (st->codec->codec_tag &&
|
|
st->codec->codec_tag != format &&
|
|
(c->fc->video_codec_id ? codec_get_id(codec_movvideo_tags, format) != c->fc->video_codec_id
|
|
: st->codec->codec_tag != MKTAG('j','p','e','g'))
|
|
){
|
|
/* Multiple fourcc, we skip JPEG. This is not correct, we should
|
|
* export it as a separate AVStream but this needs a few changes
|
|
* in the MOV demuxer, patch welcome. */
|
|
av_log(c->fc, AV_LOG_WARNING, "multiple fourcc not supported\n");
|
|
url_fskip(pb, size - (url_ftell(pb) - start_pos));
|
|
continue;
|
|
}
|
|
sc->pseudo_stream_id = st->codec->codec_tag ? -1 : pseudo_stream_id;
|
|
sc->dref_id= dref_id;
|
|
|
|
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;
|
|
else if(st->codec->codec_type == CODEC_TYPE_DATA){
|
|
id = codec_get_id(ff_codec_movsubtitle_tags, format);
|
|
if(id > 0)
|
|
st->codec->codec_type = CODEC_TYPE_SUBTITLE;
|
|
}
|
|
}
|
|
|
|
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) {
|
|
uint8_t codec_name[32];
|
|
unsigned int color_depth;
|
|
int color_greyscale;
|
|
|
|
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 */
|
|
get_be16(pb); /* frames per samples */
|
|
|
|
get_buffer(pb, codec_name, 32); /* codec name, pascal string */
|
|
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_coded_sample = get_be16(pb); /* depth */
|
|
st->codec->color_table_id = get_be16(pb); /* colortable id */
|
|
dprintf(c->fc, "depth %d, ctab id %d\n",
|
|
st->codec->bits_per_coded_sample, st->codec->color_table_id);
|
|
/* figure out the palette situation */
|
|
color_depth = st->codec->bits_per_coded_sample & 0x1F;
|
|
color_greyscale = st->codec->bits_per_coded_sample & 0x20;
|
|
|
|
/* if the depth is 2, 4, or 8 bpp, file is palettized */
|
|
if ((color_depth == 2) || (color_depth == 4) ||
|
|
(color_depth == 8)) {
|
|
/* for palette traversal */
|
|
unsigned int color_start, color_count, color_end;
|
|
unsigned char r, g, b;
|
|
|
|
if (color_greyscale) {
|
|
int color_index, color_dec;
|
|
/* compute the greyscale palette */
|
|
st->codec->bits_per_coded_sample = color_depth;
|
|
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) {
|
|
const uint8_t *color_table;
|
|
/* 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);
|
|
if ((color_start <= 255) &&
|
|
(color_end <= 255)) {
|
|
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, flags;
|
|
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_coded_sample = get_be16(pb); /* sample size */
|
|
|
|
sc->audio_cid = get_be16(pb);
|
|
get_be16(pb); /* packet size = 0 */
|
|
|
|
st->codec->sample_rate = ((get_be32(pb) >> 16));
|
|
|
|
//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 */
|
|
st->codec->bits_per_coded_sample = get_be32(pb); /* bits per channel if sound is uncompressed */
|
|
flags = get_be32(pb); /* lcpm format specific flag */
|
|
sc->bytes_per_frame = get_be32(pb); /* bytes per audio packet if constant */
|
|
sc->samples_per_frame = get_be32(pb); /* lpcm frames per audio packet if constant */
|
|
if (format == MKTAG('l','p','c','m'))
|
|
st->codec->codec_id = mov_get_lpcm_codec_id(st->codec->bits_per_coded_sample, flags);
|
|
}
|
|
}
|
|
|
|
switch (st->codec->codec_id) {
|
|
case CODEC_ID_PCM_S8:
|
|
case CODEC_ID_PCM_U8:
|
|
if (st->codec->bits_per_coded_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_coded_sample == 8)
|
|
st->codec->codec_id = CODEC_ID_PCM_S8;
|
|
else if (st->codec->bits_per_coded_sample == 24)
|
|
st->codec->codec_id =
|
|
st->codec->codec_id == CODEC_ID_PCM_S16BE ?
|
|
CODEC_ID_PCM_S24BE : CODEC_ID_PCM_S24LE;
|
|
break;
|
|
/* set values for old format before stsd version 1 appeared */
|
|
case CODEC_ID_MACE3:
|
|
sc->samples_per_frame = 6;
|
|
sc->bytes_per_frame = 2*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_MACE6:
|
|
sc->samples_per_frame = 6;
|
|
sc->bytes_per_frame = 1*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_ADPCM_IMA_QT:
|
|
sc->samples_per_frame = 64;
|
|
sc->bytes_per_frame = 34*st->codec->channels;
|
|
break;
|
|
case CODEC_ID_GSM:
|
|
sc->samples_per_frame = 160;
|
|
sc->bytes_per_frame = 33;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
bits_per_sample = av_get_bits_per_sample(st->codec->codec_id);
|
|
if (bits_per_sample) {
|
|
st->codec->bits_per_coded_sample = bits_per_sample;
|
|
sc->sample_size = (bits_per_sample >> 3) * st->codec->channels;
|
|
}
|
|
} else if(st->codec->codec_type==CODEC_TYPE_SUBTITLE){
|
|
// ttxt stsd contains display flags, justification, background
|
|
// color, fonts, and default styles, so fake an atom to read it
|
|
MOVAtom fake_atom = { .size = size - (url_ftell(pb) - start_pos) };
|
|
mov_read_glbl(c, pb, fake_atom);
|
|
st->codec->codec_id= id;
|
|
st->codec->width = sc->width;
|
|
st->codec->height = sc->height;
|
|
} 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) {
|
|
if (mov_read_default(c, pb, a) < 0)
|
|
return -1;
|
|
} 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) {
|
|
#if CONFIG_DV_DEMUXER
|
|
case CODEC_ID_DVAUDIO:
|
|
c->dv_fctx = avformat_alloc_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_QCELP:
|
|
st->codec->frame_size= 160;
|
|
st->codec->channels= 1; /* really needed */
|
|
break;
|
|
case CODEC_ID_AMR_NB:
|
|
case CODEC_ID_AMR_WB:
|
|
st->codec->frame_size= sc->samples_per_frame;
|
|
st->codec->channels= 1; /* really needed */
|
|
/* force sample rate for amr, stsd in 3gp does not store sample rate */
|
|
if (st->codec->codec_id == CODEC_ID_AMR_NB)
|
|
st->codec->sample_rate = 8000;
|
|
else if (st->codec->codec_id == CODEC_ID_AMR_WB)
|
|
st->codec->sample_rate = 16000;
|
|
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_GSM:
|
|
case CODEC_ID_ADPCM_MS:
|
|
case CODEC_ID_ADPCM_IMA_WAV:
|
|
st->codec->block_align = sc->bytes_per_frame;
|
|
break;
|
|
case CODEC_ID_ALAC:
|
|
if (st->codec->extradata_size == 36) {
|
|
st->codec->frame_size = AV_RB32(st->codec->extradata+12);
|
|
st->codec->channels = AV_RB8 (st->codec->extradata+21);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stsc(MOVContext *c, ByteIOContext *pb, MOVAtom 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_be24(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
dprintf(c->fc, "track[%i].stsc.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
if(entries >= UINT_MAX / sizeof(*sc->stsc_data))
|
|
return -1;
|
|
sc->stsc_data = av_malloc(entries * sizeof(*sc->stsc_data));
|
|
if (!sc->stsc_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->stsc_count = entries;
|
|
|
|
for(i=0; i<entries; i++) {
|
|
sc->stsc_data[i].first = get_be32(pb);
|
|
sc->stsc_data[i].count = get_be32(pb);
|
|
sc->stsc_data[i].id = get_be32(pb);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stss(MOVContext *c, ByteIOContext *pb, MOVAtom 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_be24(pb); /* flags */
|
|
|
|
entries = get_be32(pb);
|
|
|
|
dprintf(c->fc, "keyframe_count = %d\n", entries);
|
|
|
|
if(entries >= UINT_MAX / sizeof(int))
|
|
return -1;
|
|
sc->keyframes = av_malloc(entries * sizeof(int));
|
|
if (!sc->keyframes)
|
|
return AVERROR(ENOMEM);
|
|
sc->keyframe_count = entries;
|
|
|
|
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, MOVAtom 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_be24(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);
|
|
|
|
dprintf(c->fc, "sample_size = %d sample_count = %d\n", sc->sample_size, entries);
|
|
|
|
sc->sample_count = entries;
|
|
if (sample_size)
|
|
return 0;
|
|
|
|
if(entries >= UINT_MAX / sizeof(int))
|
|
return -1;
|
|
sc->sample_sizes = av_malloc(entries * sizeof(int));
|
|
if (!sc->sample_sizes)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for(i=0; i<entries; i++)
|
|
sc->sample_sizes[i] = get_be32(pb);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_stts(MOVContext *c, ByteIOContext *pb, MOVAtom 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_be24(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
|
|
dprintf(c->fc, "track[%i].stts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
if(entries >= UINT_MAX / sizeof(*sc->stts_data))
|
|
return -1;
|
|
sc->stts_data = av_malloc(entries * sizeof(*sc->stts_data));
|
|
if (!sc->stts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->stts_count = entries;
|
|
|
|
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= av_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, MOVAtom 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_be24(pb); /* flags */
|
|
entries = get_be32(pb);
|
|
|
|
dprintf(c->fc, "track[%i].ctts.entries = %i\n", c->fc->nb_streams-1, entries);
|
|
|
|
if(entries >= UINT_MAX / sizeof(*sc->ctts_data))
|
|
return -1;
|
|
sc->ctts_data = av_malloc(entries * sizeof(*sc->ctts_data));
|
|
if (!sc->ctts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->ctts_count = entries;
|
|
|
|
for(i=0; i<entries; i++) {
|
|
int count =get_be32(pb);
|
|
int duration =get_be32(pb);
|
|
|
|
if (duration < 0) {
|
|
sc->wrong_dts = 1;
|
|
st->codec->has_b_frames = 1;
|
|
}
|
|
sc->ctts_data[i].count = count;
|
|
sc->ctts_data[i].duration= duration;
|
|
|
|
sc->time_rate= av_gcd(sc->time_rate, FFABS(duration));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void mov_build_index(MOVContext *mov, AVStream *st)
|
|
{
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int64_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;
|
|
|
|
/* adjust first dts according to edit list */
|
|
if (sc->time_offset) {
|
|
assert(sc->time_offset % sc->time_rate == 0);
|
|
current_dts = - (sc->time_offset / sc->time_rate);
|
|
}
|
|
|
|
/* only use old uncompressed audio chunk demuxing when stts specifies it */
|
|
if (!(st->codec->codec_type == CODEC_TYPE_AUDIO &&
|
|
sc->stts_count == 1 && sc->stts_data[0].duration == 1)) {
|
|
unsigned int current_sample = 0;
|
|
unsigned int stts_sample = 0;
|
|
unsigned int keyframe, sample_size;
|
|
unsigned int distance = 0;
|
|
int key_off = sc->keyframes && sc->keyframes[0] == 1;
|
|
|
|
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->stsc_count &&
|
|
i + 1 == sc->stsc_data[stsc_index + 1].first)
|
|
stsc_index++;
|
|
for (j = 0; j < sc->stsc_data[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+key_off == 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];
|
|
if(sc->pseudo_stream_id == -1 ||
|
|
sc->stsc_data[stsc_index].id - 1 == sc->pseudo_stream_id) {
|
|
av_add_index_entry(st, current_offset, current_dts, sample_size, distance,
|
|
keyframe ? AVINDEX_KEYFRAME : 0);
|
|
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);
|
|
}
|
|
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;
|
|
unsigned int frames = 1;
|
|
for (i = 0; i < sc->chunk_count; i++) {
|
|
current_offset = sc->chunk_offsets[i];
|
|
if (stsc_index + 1 < sc->stsc_count &&
|
|
i + 1 == sc->stsc_data[stsc_index + 1].first)
|
|
stsc_index++;
|
|
chunk_samples = sc->stsc_data[stsc_index].count;
|
|
/* get chunk size, beware of alaw/ulaw/mace */
|
|
if (sc->samples_per_frame > 0 &&
|
|
(chunk_samples * sc->bytes_per_frame % sc->samples_per_frame == 0)) {
|
|
if (sc->samples_per_frame < 160)
|
|
chunk_size = chunk_samples * sc->bytes_per_frame / sc->samples_per_frame;
|
|
else {
|
|
chunk_size = sc->bytes_per_frame;
|
|
frames = chunk_samples / sc->samples_per_frame;
|
|
chunk_samples = sc->samples_per_frame;
|
|
}
|
|
} else
|
|
chunk_size = chunk_samples * sc->sample_size;
|
|
for (j = 0; j < frames; j++) {
|
|
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++;
|
|
}
|
|
}
|
|
current_offset += sc->bytes_per_frame;
|
|
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_trak(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
int ret;
|
|
|
|
st = av_new_stream(c->fc, c->fc->nb_streams);
|
|
if (!st) return AVERROR(ENOMEM);
|
|
sc = av_mallocz(sizeof(MOVStreamContext));
|
|
if (!sc) return AVERROR(ENOMEM);
|
|
|
|
st->priv_data = sc;
|
|
st->codec->codec_type = CODEC_TYPE_DATA;
|
|
sc->ffindex = st->index;
|
|
|
|
if ((ret = mov_read_default(c, pb, atom)) < 0)
|
|
return ret;
|
|
|
|
/* sanity checks */
|
|
if(sc->chunk_count && (!sc->stts_count || !sc->stsc_count ||
|
|
(!sc->sample_size && !sc->sample_count))){
|
|
av_log(c->fc, AV_LOG_ERROR, "stream %d, missing mandatory atoms, broken header\n",
|
|
st->index);
|
|
sc->sample_count = 0; //ignore track
|
|
return 0;
|
|
}
|
|
if(!sc->time_rate)
|
|
sc->time_rate=1;
|
|
if(!sc->time_scale)
|
|
sc->time_scale= c->time_scale;
|
|
av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
|
|
|
|
if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
|
|
!st->codec->frame_size && sc->stts_count == 1) {
|
|
st->codec->frame_size = av_rescale(sc->stts_data[0].duration,
|
|
st->codec->sample_rate, sc->time_scale);
|
|
dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
|
|
}
|
|
|
|
if(st->duration != AV_NOPTS_VALUE){
|
|
assert(st->duration % sc->time_rate == 0);
|
|
st->duration /= sc->time_rate;
|
|
}
|
|
|
|
mov_build_index(c, st);
|
|
|
|
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
|
|
if (url_fopen(&sc->pb, sc->drefs[sc->dref_id-1].path, URL_RDONLY) < 0)
|
|
av_log(c->fc, AV_LOG_ERROR, "stream %d, error opening file %s: %s\n",
|
|
st->index, sc->drefs[sc->dref_id-1].path, strerror(errno));
|
|
} else
|
|
sc->pb = c->fc->pb;
|
|
|
|
switch (st->codec->codec_id) {
|
|
#if CONFIG_H261_DECODER
|
|
case CODEC_ID_H261:
|
|
#endif
|
|
#if CONFIG_H263_DECODER
|
|
case CODEC_ID_H263:
|
|
#endif
|
|
#if CONFIG_MPEG4_DECODER
|
|
case CODEC_ID_MPEG4:
|
|
#endif
|
|
st->codec->width= 0; /* let decoder init width/height */
|
|
st->codec->height= 0;
|
|
break;
|
|
}
|
|
|
|
/* Do not need those anymore. */
|
|
av_freep(&sc->chunk_offsets);
|
|
av_freep(&sc->stsc_data);
|
|
av_freep(&sc->sample_sizes);
|
|
av_freep(&sc->keyframes);
|
|
av_freep(&sc->stts_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_ilst(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
int ret;
|
|
c->itunes_metadata = 1;
|
|
ret = mov_read_default(c, pb, atom);
|
|
c->itunes_metadata = 0;
|
|
return ret;
|
|
}
|
|
|
|
static int mov_read_meta(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
url_fskip(pb, 4); // version + flags
|
|
atom.size -= 4;
|
|
return mov_read_default(c, pb, atom);
|
|
}
|
|
|
|
static int mov_read_trkn(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
char track[16];
|
|
get_be32(pb); // type
|
|
get_be32(pb); // unknown
|
|
snprintf(track, sizeof(track), "%d", get_be32(pb));
|
|
av_metadata_set(&c->fc->metadata, "track", track);
|
|
dprintf(c->fc, "%.4s %s\n", (char*)&atom.type, track);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_udta_string(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
char str[1024], key2[16], language[4] = {0};
|
|
const char *key = NULL;
|
|
uint16_t str_size;
|
|
|
|
if (c->itunes_metadata) {
|
|
int data_size = get_be32(pb);
|
|
int tag = get_le32(pb);
|
|
if (tag == MKTAG('d','a','t','a')) {
|
|
get_be32(pb); // type
|
|
get_be32(pb); // unknown
|
|
str_size = data_size - 16;
|
|
atom.size -= 16;
|
|
} else return 0;
|
|
} else {
|
|
str_size = get_be16(pb); // string length
|
|
ff_mov_lang_to_iso639(get_be16(pb), language);
|
|
atom.size -= 4;
|
|
}
|
|
switch (atom.type) {
|
|
case MKTAG(0xa9,'n','a','m'): key = "title"; break;
|
|
case MKTAG(0xa9,'a','u','t'):
|
|
case MKTAG(0xa9,'A','R','T'):
|
|
case MKTAG(0xa9,'w','r','t'): key = "author"; break;
|
|
case MKTAG(0xa9,'c','p','y'): key = "copyright"; break;
|
|
case MKTAG(0xa9,'c','m','t'):
|
|
case MKTAG(0xa9,'i','n','f'): key = "comment"; break;
|
|
case MKTAG(0xa9,'a','l','b'): key = "album"; break;
|
|
case MKTAG(0xa9,'d','a','y'): key = "year"; break;
|
|
case MKTAG(0xa9,'g','e','n'): key = "genre"; break;
|
|
case MKTAG(0xa9,'t','o','o'):
|
|
case MKTAG(0xa9,'e','n','c'): key = "muxer"; break;
|
|
}
|
|
if (!key)
|
|
return 0;
|
|
if (atom.size < 0)
|
|
return -1;
|
|
|
|
str_size = FFMIN3(sizeof(str)-1, str_size, atom.size);
|
|
get_buffer(pb, str, str_size);
|
|
str[str_size] = 0;
|
|
av_metadata_set(&c->fc->metadata, key, str);
|
|
if (*language && strcmp(language, "und")) {
|
|
snprintf(key2, sizeof(key2), "%s-%s", key, language);
|
|
av_metadata_set(&c->fc->metadata, key2, str);
|
|
}
|
|
dprintf(c->fc, "%.4s %s %d %lld\n", (char*)&atom.type, str, str_size, atom.size);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_tkhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
int i;
|
|
int width;
|
|
int height;
|
|
int64_t disp_transform[2];
|
|
int display_matrix[3][2];
|
|
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
|
|
MOVStreamContext *sc = st->priv_data;
|
|
int version = get_byte(pb);
|
|
|
|
get_be24(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 */
|
|
|
|
/* highlevel (considering edits) duration in movie timebase */
|
|
(version == 1) ? get_be64(pb) : get_be32(pb);
|
|
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 */
|
|
|
|
//read in the display matrix (outlined in ISO 14496-12, Section 6.2.2)
|
|
// they're kept in fixed point format through all calculations
|
|
// ignore u,v,z b/c we don't need the scale factor to calc aspect ratio
|
|
for (i = 0; i < 3; i++) {
|
|
display_matrix[i][0] = get_be32(pb); // 16.16 fixed point
|
|
display_matrix[i][1] = get_be32(pb); // 16.16 fixed point
|
|
get_be32(pb); // 2.30 fixed point (not used)
|
|
}
|
|
|
|
width = get_be32(pb); // 16.16 fixed point track width
|
|
height = get_be32(pb); // 16.16 fixed point track height
|
|
sc->width = width >> 16;
|
|
sc->height = height >> 16;
|
|
|
|
//transform the display width/height according to the matrix
|
|
// skip this if the display matrix is the default identity matrix
|
|
// to keep the same scale, use [width height 1<<16]
|
|
if (width && height &&
|
|
(display_matrix[0][0] != 65536 || display_matrix[0][1] ||
|
|
display_matrix[1][0] || display_matrix[1][1] != 65536 ||
|
|
display_matrix[2][0] || display_matrix[2][1])) {
|
|
for (i = 0; i < 2; i++)
|
|
disp_transform[i] =
|
|
(int64_t) width * display_matrix[0][i] +
|
|
(int64_t) height * display_matrix[1][i] +
|
|
((int64_t) display_matrix[2][i] << 16);
|
|
|
|
//sample aspect ratio is new width/height divided by old width/height
|
|
st->sample_aspect_ratio = av_d2q(
|
|
((double) disp_transform[0] * height) /
|
|
((double) disp_transform[1] * width), INT_MAX);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_tfhd(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVFragment *frag = &c->fragment;
|
|
MOVTrackExt *trex = NULL;
|
|
int flags, track_id, i;
|
|
|
|
get_byte(pb); /* version */
|
|
flags = get_be24(pb);
|
|
|
|
track_id = get_be32(pb);
|
|
if (!track_id || track_id > c->fc->nb_streams)
|
|
return -1;
|
|
frag->track_id = track_id;
|
|
for (i = 0; i < c->trex_count; i++)
|
|
if (c->trex_data[i].track_id == frag->track_id) {
|
|
trex = &c->trex_data[i];
|
|
break;
|
|
}
|
|
if (!trex) {
|
|
av_log(c->fc, AV_LOG_ERROR, "could not find corresponding trex\n");
|
|
return -1;
|
|
}
|
|
|
|
if (flags & 0x01) frag->base_data_offset = get_be64(pb);
|
|
else frag->base_data_offset = frag->moof_offset;
|
|
if (flags & 0x02) frag->stsd_id = get_be32(pb);
|
|
else frag->stsd_id = trex->stsd_id;
|
|
|
|
frag->duration = flags & 0x08 ? get_be32(pb) : trex->duration;
|
|
frag->size = flags & 0x10 ? get_be32(pb) : trex->size;
|
|
frag->flags = flags & 0x20 ? get_be32(pb) : trex->flags;
|
|
dprintf(c->fc, "frag flags 0x%x\n", frag->flags);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trex(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVTrackExt *trex;
|
|
|
|
if ((uint64_t)c->trex_count+1 >= UINT_MAX / sizeof(*c->trex_data))
|
|
return -1;
|
|
trex = av_realloc(c->trex_data, (c->trex_count+1)*sizeof(*c->trex_data));
|
|
if (!trex)
|
|
return AVERROR(ENOMEM);
|
|
c->trex_data = trex;
|
|
trex = &c->trex_data[c->trex_count++];
|
|
get_byte(pb); /* version */
|
|
get_be24(pb); /* flags */
|
|
trex->track_id = get_be32(pb);
|
|
trex->stsd_id = get_be32(pb);
|
|
trex->duration = get_be32(pb);
|
|
trex->size = get_be32(pb);
|
|
trex->flags = get_be32(pb);
|
|
return 0;
|
|
}
|
|
|
|
static int mov_read_trun(MOVContext *c, ByteIOContext *pb, MOVAtom atom)
|
|
{
|
|
MOVFragment *frag = &c->fragment;
|
|
AVStream *st;
|
|
MOVStreamContext *sc;
|
|
uint64_t offset;
|
|
int64_t dts;
|
|
int data_offset = 0;
|
|
unsigned entries, first_sample_flags = frag->flags;
|
|
int flags, distance, i;
|
|
|
|
if (!frag->track_id || frag->track_id > c->fc->nb_streams)
|
|
return -1;
|
|
st = c->fc->streams[frag->track_id-1];
|
|
sc = st->priv_data;
|
|
if (sc->pseudo_stream_id+1 != frag->stsd_id)
|
|
return 0;
|
|
get_byte(pb); /* version */
|
|
flags = get_be24(pb);
|
|
entries = get_be32(pb);
|
|
dprintf(c->fc, "flags 0x%x entries %d\n", flags, entries);
|
|
if (flags & 0x001) data_offset = get_be32(pb);
|
|
if (flags & 0x004) first_sample_flags = get_be32(pb);
|
|
if (flags & 0x800) {
|
|
MOVStts *ctts_data;
|
|
if ((uint64_t)entries+sc->ctts_count >= UINT_MAX/sizeof(*sc->ctts_data))
|
|
return -1;
|
|
ctts_data = av_realloc(sc->ctts_data,
|
|
(entries+sc->ctts_count)*sizeof(*sc->ctts_data));
|
|
if (!ctts_data)
|
|
return AVERROR(ENOMEM);
|
|
sc->ctts_data = ctts_data;
|
|
}
|
|
dts = st->duration;
|
|
offset = frag->base_data_offset + data_offset;
|
|
distance = 0;
|
|
dprintf(c->fc, "first sample flags 0x%x\n", first_sample_flags);
|
|
for (i = 0; i < entries; i++) {
|
|
unsigned sample_size = frag->size;
|
|
int sample_flags = i ? frag->flags : first_sample_flags;
|
|
unsigned sample_duration = frag->duration;
|
|
int keyframe;
|
|
|
|
if (flags & 0x100) sample_duration = get_be32(pb);
|
|
if (flags & 0x200) sample_size = get_be32(pb);
|
|
if (flags & 0x400) sample_flags = get_be32(pb);
|
|
if (flags & 0x800) {
|
|
sc->ctts_data[sc->ctts_count].count = 1;
|
|
sc->ctts_data[sc->ctts_count].duration = get_be32(pb);
|
|
sc->ctts_count++;
|
|
}
|
|
if ((keyframe = st->codec->codec_type == CODEC_TYPE_AUDIO ||
|
|
(flags & 0x004 && !i && !sample_flags) || sample_flags & 0x2000000))
|
|
distance = 0;
|
|
av_add_index_entry(st, offset, dts, sample_size, distance,
|
|
keyframe ? AVINDEX_KEYFRAME : 0);
|
|
dprintf(c->fc, "AVIndex stream %d, sample %d, offset %"PRIx64", dts %"PRId64", "
|
|
"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
|
|
offset, dts, sample_size, distance, keyframe);
|
|
distance++;
|
|
assert(sample_duration % sc->time_rate == 0);
|
|
dts += sample_duration / sc->time_rate;
|
|
offset += sample_size;
|
|
}
|
|
frag->moof_offset = offset;
|
|
sc->sample_count = st->nb_index_entries;
|
|
st->duration = dts;
|
|
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, MOVAtom 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, MOVAtom atom)
|
|
{
|
|
#if CONFIG_ZLIB
|
|
ByteIOContext ctx;
|
|
uint8_t *cmov_data;
|
|
uint8_t *moov_data; /* uncompressed data */
|
|
long cmov_len, moov_len;
|
|
int ret = -1;
|
|
|
|
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(c->fc, 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 AVERROR(ENOMEM);
|
|
moov_data = av_malloc(moov_len);
|
|
if (!moov_data) {
|
|
av_free(cmov_data);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
get_buffer(pb, cmov_data, cmov_len);
|
|
if(uncompress (moov_data, (uLongf *) &moov_len, (const Bytef *)cmov_data, cmov_len) != Z_OK)
|
|
goto free_and_return;
|
|
if(init_put_byte(&ctx, moov_data, moov_len, 0, NULL, NULL, NULL, NULL) != 0)
|
|
goto free_and_return;
|
|
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);
|
|
free_and_return:
|
|
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, MOVAtom atom)
|
|
{
|
|
MOVStreamContext *sc = c->fc->streams[c->fc->nb_streams-1]->priv_data;
|
|
int i, edit_count;
|
|
|
|
get_byte(pb); /* version */
|
|
get_be24(pb); /* flags */
|
|
edit_count = get_be32(pb); /* entries */
|
|
|
|
for(i=0; i<edit_count; i++){
|
|
int time;
|
|
get_be32(pb); /* Track duration */
|
|
time = get_be32(pb); /* Media time */
|
|
get_be32(pb); /* Media rate */
|
|
if (i == 0 && time != -1) {
|
|
sc->time_offset = time;
|
|
sc->time_rate = av_gcd(sc->time_rate, time);
|
|
}
|
|
}
|
|
|
|
if(edit_count > 1)
|
|
av_log(c->fc, AV_LOG_WARNING, "multiple edit list entries, "
|
|
"a/v desync might occur, patch welcome\n");
|
|
|
|
dprintf(c->fc, "track[%i].edit_count = %i\n", c->fc->nb_streams-1, edit_count);
|
|
return 0;
|
|
}
|
|
|
|
static const MOVParseTableEntry mov_default_parse_table[] = {
|
|
{ MKTAG('a','v','s','s'), mov_read_extradata },
|
|
{ MKTAG('c','o','6','4'), mov_read_stco },
|
|
{ MKTAG('c','t','t','s'), mov_read_ctts }, /* composition time to sample */
|
|
{ MKTAG('d','i','n','f'), mov_read_default },
|
|
{ MKTAG('d','r','e','f'), mov_read_dref },
|
|
{ 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('g','l','b','l'), mov_read_glbl },
|
|
{ MKTAG('h','d','l','r'), mov_read_hdlr },
|
|
{ MKTAG('i','l','s','t'), mov_read_ilst },
|
|
{ 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','e','t','a'), mov_read_meta },
|
|
{ MKTAG('m','i','n','f'), mov_read_default },
|
|
{ MKTAG('m','o','o','f'), mov_read_moof },
|
|
{ MKTAG('m','o','o','v'), mov_read_moov },
|
|
{ MKTAG('m','v','e','x'), mov_read_default },
|
|
{ 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_glbl },
|
|
{ MKTAG('p','a','s','p'), mov_read_pasp },
|
|
{ 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','f','h','d'), mov_read_tfhd }, /* track fragment header */
|
|
{ MKTAG('t','r','a','k'), mov_read_trak },
|
|
{ MKTAG('t','r','a','f'), mov_read_default },
|
|
{ MKTAG('t','r','e','x'), mov_read_trex },
|
|
{ MKTAG('t','r','k','n'), mov_read_trkn },
|
|
{ MKTAG('t','r','u','n'), mov_read_trun },
|
|
{ MKTAG('u','d','t','a'), mov_read_default },
|
|
{ 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 },
|
|
{ MKTAG(0xa9,'n','a','m'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'w','r','t'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'c','p','y'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'i','n','f'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'i','n','f'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'A','R','T'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'a','l','b'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'c','m','t'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'a','u','t'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'d','a','y'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'g','e','n'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'e','n','c'), mov_read_udta_string },
|
|
{ MKTAG(0xa9,'t','o','o'), mov_read_udta_string },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
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 */
|
|
case MKTAG('f','t','y','p'):
|
|
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(0x82,0x82,0x7f,0x7d):
|
|
case MKTAG('s','k','i','p'):
|
|
case MKTAG('u','u','i','d'):
|
|
case MKTAG('p','r','f','l'):
|
|
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 int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
|
{
|
|
MOVContext *mov = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
int err;
|
|
MOVAtom atom = { 0, 0, 0 };
|
|
|
|
mov->fc = s;
|
|
/* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
|
|
if(!url_is_streamed(pb))
|
|
atom.size = url_fsize(pb);
|
|
else
|
|
atom.size = INT64_MAX;
|
|
|
|
/* check MOV header */
|
|
if ((err = mov_read_default(mov, pb, atom)) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "error reading header: %d\n", err);
|
|
return err;
|
|
}
|
|
if (!mov->found_moov) {
|
|
av_log(s, AV_LOG_ERROR, "moov atom not found\n");
|
|
return -1;
|
|
}
|
|
dprintf(mov->fc, "on_parse_exit_offset=%lld\n", url_ftell(pb));
|
|
|
|
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, ret;
|
|
retry:
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
MOVStreamContext *msc = st->priv_data;
|
|
if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < msc->sample_count) {
|
|
AVIndexEntry *current_sample = &st->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 (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
|
|
(!url_is_streamed(s->pb) &&
|
|
((msc->pb != s->pb && dts < best_dts) || (msc->pb == s->pb &&
|
|
((FFABS(best_dts - dts) <= AV_TIME_BASE && current_sample->pos < sample->pos) ||
|
|
(FFABS(best_dts - dts) > AV_TIME_BASE && dts < best_dts)))))) {
|
|
sample = current_sample;
|
|
best_dts = dts;
|
|
sc = msc;
|
|
}
|
|
}
|
|
}
|
|
if (!sample) {
|
|
mov->found_mdat = 0;
|
|
if (!url_is_streamed(s->pb) ||
|
|
mov_read_default(mov, s->pb, (MOVAtom){ 0, 0, INT64_MAX }) < 0 ||
|
|
url_feof(s->pb))
|
|
return -1;
|
|
dprintf(s, "read fragments, offset 0x%llx\n", url_ftell(s->pb));
|
|
goto retry;
|
|
}
|
|
/* must be done just before reading, to avoid infinite loop on sample */
|
|
sc->current_sample++;
|
|
if (url_fseek(sc->pb, sample->pos, SEEK_SET) != sample->pos) {
|
|
av_log(mov->fc, AV_LOG_ERROR, "stream %d, offset 0x%"PRIx64": partial file\n",
|
|
sc->ffindex, sample->pos);
|
|
return -1;
|
|
}
|
|
ret = av_get_packet(sc->pb, pkt, sample->size);
|
|
if (ret < 0)
|
|
return ret;
|
|
#if CONFIG_DV_DEMUXER
|
|
if (mov->dv_demux && sc->dv_audio_container) {
|
|
dv_produce_packet(mov->dv_demux, pkt, pkt->data, pkt->size);
|
|
av_free(pkt->data);
|
|
pkt->size = 0;
|
|
if (dv_get_packet(mov->dv_demux, pkt) < 0)
|
|
return -1;
|
|
}
|
|
#endif
|
|
pkt->stream_index = sc->ffindex;
|
|
pkt->dts = sample->timestamp;
|
|
if (sc->ctts_data) {
|
|
assert(sc->ctts_data[sc->ctts_index].duration % sc->time_rate == 0);
|
|
pkt->pts = pkt->dts + sc->ctts_data[sc->ctts_index].duration / sc->time_rate;
|
|
/* update ctts context */
|
|
sc->ctts_sample++;
|
|
if (sc->ctts_index < sc->ctts_count &&
|
|
sc->ctts_data[sc->ctts_index].count == sc->ctts_sample) {
|
|
sc->ctts_index++;
|
|
sc->ctts_sample = 0;
|
|
}
|
|
if (sc->wrong_dts)
|
|
pkt->dts = AV_NOPTS_VALUE;
|
|
} else {
|
|
AVStream *st = s->streams[sc->ffindex];
|
|
int64_t next_dts = (sc->current_sample < sc->sample_count) ?
|
|
st->index_entries[sc->current_sample].timestamp : st->duration;
|
|
pkt->duration = next_dts - pkt->dts;
|
|
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->ctts_index = i;
|
|
sc->ctts_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;
|
|
if (sample_time < 0)
|
|
sample_time = 0;
|
|
|
|
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, j;
|
|
MOVContext *mov = s->priv_data;
|
|
for(i=0; i<s->nb_streams; i++) {
|
|
MOVStreamContext *sc = s->streams[i]->priv_data;
|
|
av_freep(&sc->ctts_data);
|
|
for (j=0; j<sc->drefs_count; j++)
|
|
av_freep(&sc->drefs[j].path);
|
|
av_freep(&sc->drefs);
|
|
if (sc->pb && sc->pb != s->pb)
|
|
url_fclose(sc->pb);
|
|
}
|
|
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);
|
|
}
|
|
av_freep(&mov->trex_data);
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat mov_demuxer = {
|
|
"mov,mp4,m4a,3gp,3g2,mj2",
|
|
NULL_IF_CONFIG_SMALL("QuickTime/MPEG-4/Motion JPEG 2000 format"),
|
|
sizeof(MOVContext),
|
|
mov_probe,
|
|
mov_read_header,
|
|
mov_read_packet,
|
|
mov_read_close,
|
|
mov_read_seek,
|
|
};
|