Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

* fixed initialization and some memleak

Browse Source 
* filling more avcodecs variables
* extending/improving mov parsing (unfinished)

Originally committed as revision 1812 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Zdenek Kabelac 22 years ago
parent 693feac556
commit 5cd62665f0
2 changed files with 279 additions and 125 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 8
      libavcodec/avcodec.h
  2. 340
      libavformat/mov.c

8
libavcodec/avcodec.h
Unescape View File

@ -1081,6 +1081,14 @@ typedef struct AVCodecContext {
*/
int inter_quant_bias;
/**
* color table ID.
* - encoding: unused.
* - decoding: which clrtable should be used for 8bit RGB images
* table have to be stored somewhere FIXME
*/
int color_table_id;
} AVCodecContext;

340
libavformat/mov.c
Unescape View File

@ -76,7 +76,8 @@ void print_atom(const char *str, uint32_t type, uint64_t offset, uint64_t size)
(tag >> 16) & 0xff,
(tag >> 24) & 0xff,
(unsigned int)offset,
(unsigned int)size);
(unsigned int)size);
assert((unsigned int)size < 0x7fffffff);// catching errors
}
#endif
@ -119,7 +120,7 @@ static const CodecTag mov_audio_tags[] = {
/* { CODEC_ID_PCM_S16BE, MKTAG('N', 'O', 'N', 'E') }, *//* uncompressed */
{ CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
{ CODEC_ID_PCM_S8, MKTAG('t', 'w', 'o', 's') }, /* 8 bits */
{ CODEC_ID_PCM_U8, 0x20776172 }, /* 8 bits unsigned */
{ CODEC_ID_PCM_U8, MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
{ CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /* */
{ CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /* */
{ CODEC_ID_PCM_ALAW, MKTAG('a', 'l', 'a', 'w') }, /* */
@ -148,6 +149,54 @@ typedef struct MOV_sample_to_chunk_tbl {
long id;
} MOV_sample_to_chunk_tbl;
typedef struct {
uint8_t version;
uint32_t flags; // 24bit
/* 0x03 ESDescrTag */
uint16_t es_id;
#define MP4ODescrTag 0x01
#define MP4IODescrTag 0x02
#define MP4ESDescrTag 0x03
#define MP4DecConfigDescrTag 0x04
#define MP4DecSpecificDescrTag 0x05
#define MP4SLConfigDescrTag 0x06
#define MP4ContentIdDescrTag 0x07
#define MP4SupplContentIdDescrTag 0x08
#define MP4IPIPtrDescrTag 0x09
#define MP4IPMPPtrDescrTag 0x0A
#define MP4IPMPDescrTag 0x0B
#define MP4RegistrationDescrTag 0x0D
#define MP4ESIDIncDescrTag 0x0E
#define MP4ESIDRefDescrTag 0x0F
#define MP4FileIODescrTag 0x10
#define MP4FileODescrTag 0x11
#define MP4ExtProfileLevelDescrTag 0x13
#define MP4ExtDescrTagsStart 0x80
#define MP4ExtDescrTagsEnd 0xFE
uint8_t stream_priority;
/* 0x04 DecConfigDescrTag */
uint8_t object_type_id;
uint8_t stream_type;
/* XXX: really streamType is
* only 6bit, followed by:
* 1bit upStream
* 1bit reserved
*/
uint32_t buffer_size_db; // 24
uint32_t max_bitrate;
uint32_t avg_bitrate;
/* 0x05 DecSpecificDescrTag */
uint8_t decoder_cfg_len;
uint8_t *decoder_cfg;
/* 0x06 SLConfigDescrTag */
uint8_t sl_config_len;
uint8_t *sl_config;
} MOV_esds_t;
typedef struct MOVStreamContext {
int ffindex; /* the ffmpeg stream id */
int is_ff_stream; /* Is this stream presented to ffmpeg ? i.e. is this an audio or video stream ? */
@ -160,18 +209,20 @@ typedef struct MOVStreamContext {
long sample_size;
long sample_count;
long *sample_sizes;
long time_scale;
int time_scale;
long current_sample;
long left_in_chunk; /* how many samples before next chunk */
/* specific MPEG4 header which is added at the beginning of the stream */
int header_len;
MOV_esds_t esds;
uint8_t *header_data;
} MOVStreamContext;
typedef struct MOVContext {
int mp4; /* set to 1 as soon as we are sure that the file is an .mp4 file (even some header parsing depends on this) */
AVFormatContext *fc;
long time_scale;
int time_scale;
int 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 */
int64_t mdat_size;
@ -183,7 +234,7 @@ typedef struct MOVContext {
MOVStreamContext *streams[MAX_STREAMS];
int64_t next_chunk_offset;
int partial; /* != 0 : there is still to read in the current chunk (=id of the stream + 1) */
MOVStreamContext *partial; /* != 0 : there is still to read in the current chunk */
} MOVContext;
@ -209,6 +260,7 @@ typedef struct MOVParseTableEntry {
uint32_t type;
mov_parse_function func;
} MOVParseTableEntry;
static const MOVParseTableEntry mov_default_parse_table[];
static int parse_leaf(const MOVParseTableEntry *parse_table, ByteIOContext *pb, uint32_t atom_type, int64_t atom_offset, int64_t atom_size, void *param)
{
@ -239,27 +291,30 @@ static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *p
if(atom_size < 0)
atom_size = 0x0FFFFFFFFFFFFFFF;
while((total_size < atom_size) && !url_feof(pb) && !err) {
while(((total_size + 8) < atom_size) && !url_feof(pb) && !err) {
size=atom_size;
type=0L;
if(atom_size >= 8) {
size = get_be32(pb);
size = get_be32(pb);
type = get_le32(pb);
}
total_size += 8;
offset+=8;
// printf("type: %08lx sz: %08lx", type, size);
total_size += 8;
offset += 8;
//printf("type: %08x %.4s sz: %Lx %Lx %Lx\n", type, (char*)&type, size, atom_size, total_size);
if(size == 1) { /* 64 bit extended size */
size = get_be64(pb);
size = get_be64(pb) - 8;
offset+=8;
total_size+=8;
size-=8;
}
if(size == 0)
size = atom_size - total_size;
size-=8;
for(i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++);
if(size == 0) {
size = atom_size - total_size;
if (size <= 8)
break;
}
for (i=0; parse_table[i].type != 0L && parse_table[i].type != type; i++)
/* empty */;
size -= 8;
// printf(" i=%ld\n", i);
if (parse_table[i].type == 0) { /* skip leaf atoms data */
// url_seek(pb, atom_offset+atom_size, SEEK_SET);
@ -274,12 +329,23 @@ static int parse_default(const MOVParseTableEntry *parse_table, ByteIOContext *p
total_size+=size;
}
if (!err && total_size < atom_size && atom_size < 0x7ffff) {
printf("RESET %Ld %Ld err:%d\n", atom_size, total_size, err);
url_fskip(pb, atom_size - total_size);
}
#ifdef DEBUG
debug_indent--;
#endif
return err;
}
static int parse_ctab(const MOVParseTableEntry *parse_table, ByteIOContext *pb, uint32_t atom_type, int64_t atom_offset, int64_t atom_size, void *param)
{
url_fskip(pb, atom_size); // for now
return 0;
}
static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, uint32_t atom_type, int64_t atom_offset, int64_t atom_size, void *param)
{
MOVContext *c;
@ -295,9 +361,9 @@ static int parse_mvhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
get_be32(pb); /* modification time */
c->time_scale = get_be32(pb); /* time scale */
#ifdef DEBUG
printf("time scale = %li\n", c->time_scale);
printf("time scale = %i\n", c->time_scale);
#endif
get_be32(pb); /* duration */
c->duration = get_be32(pb); /* duration */
get_be32(pb); /* preferred scale */
get_be16(pb); /* preferred volume */
@ -398,9 +464,11 @@ static int parse_trak(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
st = av_new_stream(c->fc, c->fc->nb_streams);
if (!st) return -2;
sc = av_malloc(sizeof(MOVStreamContext));
memset(sc, 0, sizeof(MOVStreamContext));
sc->sample_to_chunk_index = -1;
st->priv_data = sc;
st->codec.codec_type = CODEC_TYPE_MOV_OTHER;
st->time_length = (c->duration * 1000) / c->time_scale; // time in miliseconds
c->streams[c->fc->nb_streams-1] = sc;
return parse_default(parse_table, pb, atom_type, atom_offset, atom_size, param);
}
@ -431,7 +499,7 @@ static int parse_tkhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
get_be32(pb); /* modification time */
st->id = (int)get_be32(pb); /* track id (NOT 0 !)*/
get_be32(pb); /* reserved */
get_be32(pb); /* duration */
st->time_length = get_be32(pb) * 1000 / c->time_scale; /* duration */
get_be32(pb); /* reserved */
get_be32(pb); /* reserved */
@ -471,7 +539,7 @@ static int parse_mdhd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
c->streams[c->total_streams]->time_scale = get_be32(pb);
#ifdef DEBUG
printf("track[%i].time_scale = %li\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
printf("track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->total_streams]->time_scale); /* time scale */
#endif
get_be32(pb); /* duration */
@ -590,13 +658,11 @@ static int parse_hdlr(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
static int mp4_read_descr_len(ByteIOContext *pb)
{
int c, len, count;
len = 0;
count = 0;
int len = 0;
int count = 0;
for(;;) {
c = get_byte(pb);
len = (len << 7) | (c & 0x7f);
int c = get_byte(pb);
len = (len << 7) | (c & 0x7f);
if ((c & 0x80) == 0)
break;
if (++count == 4)
@ -616,10 +682,65 @@ static int mp4_read_descr(ByteIOContext *pb, int *tag)
return len;
}
static inline unsigned int get_be24(ByteIOContext *s)
{
unsigned int val;
val = get_byte(s) << 16;
val |= get_byte(s) << 8;
val |= get_byte(s);
return val;
}
static int parse_esds(const MOVParseTableEntry *parse_table, ByteIOContext *pb, uint32_t atom_type, int64_t atom_offset, int64_t atom_size, void *param)
{
int64_t start_pos = url_ftell(pb);
MOVContext *c = (MOVContext *)param;
AVStream *st = c->fc->streams[c->fc->nb_streams-1];
MOVStreamContext *sc = (MOVStreamContext *)st->priv_data;
int tag, len;
#ifdef DEBUG
print_atom("esds", atom_type, atom_offset, atom_size);
#endif
/* Well, broken but suffisant for some MP4 streams */
get_be32(pb); /* version + flags */
len = mp4_read_descr(pb, &tag);
if (tag == MP4ESDescrTag) {
get_be16(pb); /* ID */
get_byte(pb); /* priority */
} else
get_be16(pb); /* ID */
len = mp4_read_descr(pb, &tag);
if (tag == MP4DecConfigDescrTag) {
sc->esds.object_type_id = get_byte(pb);
sc->esds.stream_type = get_be24(pb);
sc->esds.max_bitrate = get_be32(pb);
sc->esds.avg_bitrate = get_be32(pb);
len = mp4_read_descr(pb, &tag);
printf("LEN %d TAG %d m:%d a:%d\n", len, tag, sc->esds.max_bitrate, sc->esds.avg_bitrate);
if (tag == MP4DecSpecificDescrTag) {
#ifdef DEBUG
printf("Specific MPEG4 header len=%d\n", len);
#endif
sc->header_data = av_mallocz(len);
if (sc->header_data) {
get_buffer(pb, sc->header_data, len);
sc->header_len = len;
}
}
}
/* in any case, skip garbage */
url_fskip(pb, (atom_size - 8) - ((url_ftell(pb) - start_pos)));
return 0;
}
static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb, uint32_t atom_type, int64_t atom_offset, int64_t atom_size, void *param)
{
MOVContext *c;
int entries, size, samp_sz, frames_per_sample, id;
int entries, size, frames_per_sample, id;
uint32_t format;
AVStream *st;
MOVStreamContext *sc;
@ -636,7 +757,7 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
entries = get_be32(pb);
while(entries--) {
size = get_be32(pb); /* size */
size = get_be32(pb); /* size */
format = get_le32(pb); /* data format */
get_be32(pb); /* reserved */
@ -660,8 +781,8 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
(format >> 24) & 0xff,
st->codec.codec_type);
#endif
st->codec.codec_tag = format;
if(st->codec.codec_type==CODEC_TYPE_VIDEO) {
st->codec.codec_tag = format;
st->codec.codec_id = codec_get_id(mov_video_tags, format);
get_be16(pb); /* version */
get_be16(pb); /* revision level */
@ -681,26 +802,28 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
get_be32(pb); /* horiz resolution */
get_be32(pb); /* vert resolution */
get_be32(pb); /* data size, always 0 */
frames_per_sample = get_be16(pb); /* frame per samples */
frames_per_sample = get_be16(pb); /* frames per samples */
#ifdef DEBUG
printf("frames/samples = %d\n", frames_per_sample);
#endif
url_fskip(pb, 32); /* codec name */
get_buffer(pb, st->codec.codec_name, 32); /* codec name */
get_be16(pb); /* depth */
get_be16(pb); /* colortable id */
st->codec.bits_per_sample = get_be16(pb); /* depth */
st->codec.color_table_id = get_be16(pb); /* colortable id */
st->codec.frame_rate = 25;
st->codec.frame_rate_base = 1;
size -= (16+8*4+2+32+2*2);
while (size >= 8) {
#if 0
while (size >= 8) {
int atom_size, atom_type;
int64_t start_pos;
atom_size = get_be32(pb);
atom_type = get_le32(pb);
size -= 8;
size -= 8;
printf("NEWSIZE %d\n", size);
#ifdef DEBUG
printf("VIDEO: atom_type=%c%c%c%c atom_size=%d size_left=%d\n",
(atom_type >> 0) & 0xff,
@ -728,7 +851,7 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
/* MP4DecConfigDescrTag */
get_byte(pb); /* objectTypeId */
get_be32(pb); /* streamType + buffer size */
get_be32(pb); /* max bit rate */
get_be32(pb); /* max bit rate */
get_be32(pb); /* avg bit rate */
len = mp4_read_descr(pb, &tag);
if (tag != 0x05)
@ -740,7 +863,7 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
sc->header_data = av_mallocz(len);
if (sc->header_data) {
get_buffer(pb, sc->header_data, len);
sc->header_len = len;
sc->header_len = len;
}
}
/* in any case, skip garbage */
@ -749,48 +872,63 @@ static int parse_stsd(const MOVParseTableEntry *parse_table, ByteIOContext *pb,
default:
break;
}
fail:
url_fskip(pb, (atom_size - 8) -
((url_ftell(pb) - start_pos)));
size -= atom_size - 8;
}
fail:
printf("ATOMENEWSIZE %d %d\n", atom_size, url_ftell(pb) - start_pos);
if (atom_size > 8) {
url_fskip(pb, (atom_size - 8) -
((url_ftell(pb) - start_pos)));
size -= atom_size - 8;
printf("NEWSIZE %d\n", size);
}
}
if (size > 0) {
/* unknown extension */
url_fskip(pb, size);
}
} else {
st->codec.codec_tag = format;
#else
parse_default(mov_default_parse_table, pb, 0L, 0LL, size, param);
#endif
} else {
get_be16(pb); /* version */
get_be16(pb); /* revision level */
get_be32(pb); /* vendor */
st->codec.channels = get_be16(pb);/* channel count */
samp_sz = get_be16(pb); /* sample size */
#ifdef DEBUG
if(samp_sz != 16)
puts("!!! stsd: audio sample size is not 16 bit !");
#endif
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
/* handle specific s8 codec */
if (st->codec.codec_id == CODEC_ID_PCM_S16BE && samp_sz == 8)
st->codec.codec_id = CODEC_ID_PCM_S8;
st->codec.bits_per_sample = get_be16(pb); /* sample size */
st->codec.codec_id = codec_get_id(mov_audio_tags, format);
/* handle specific s8 codec */
get_be16(pb); /* compression id = 0*/
get_be16(pb); /* packet size = 0 */
st->codec.sample_rate = ((get_be32(pb) >> 16));
st->codec.bit_rate = 0;
#if 0
get_be16(pb); get_be16(pb); /* */
get_be16(pb); /* */
get_be16(pb); /* */
get_be16(pb); /* */
get_be16(pb); /* */
if (st->codec.codec_id == CODEC_ID_PCM_S16BE) {
if (st->codec.bits_per_sample == 8)
st->codec.codec_id = CODEC_ID_PCM_S8;
st->codec.bit_rate = st->codec.sample_rate;
}
get_be32(pb); /* samples per packet */
get_be32(pb); /* bytes per packet */
get_be32(pb); /* bytes per frame */
get_be32(pb); /* bytes per sample */
//if (size > 16) url_fskip(pb, size-(16+20));
#if 1
if (size >= 44 + 8) {
int fcc;
st->codec.extradata_size = get_be32(pb) - 8;
fcc = get_le32(pb); // evaw
//printf("%x %.4s %d\n", fcc, (char*)&fcc, st->codec.extradata_size);
st->codec.extradata = av_mallocz(st->codec.extradata_size);
get_buffer(pb, st->codec.extradata, st->codec.extradata_size);
url_fskip(pb, size-(16 + 20 + 16 + 8 + st->codec.extradata_size));
}
else
url_fskip(pb, size-(16 + 20 + 16));
#else
parse_default(mov_default_parse_table, pb, 0L, 0LL, size - (16 + 20 + 16 + 8), param);
#endif
if(size > 16)
url_fskip(pb, size-(16+20));
}
}
/*
@ -1013,7 +1151,6 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG( 'd', 'i', 'n', 'f' ), parse_default },
{ MKTAG( 'd', 'r', 'e', 'f' ), parse_leaf },
{ MKTAG( 's', 't', 'd', 'p' ), parse_default },
{ MKTAG( 'e', 's', 'd', 's' ), parse_default },
{ MKTAG( 'e', 'd', 't', 's' ), parse_default },
{ MKTAG( 'e', 'l', 's', 't' ), parse_leaf },
{ MKTAG( 'u', 'u', 'i', 'd' ), parse_default },
@ -1067,6 +1204,8 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
{ MKTAG( 's', 's', 'r', 'c' ), parse_leaf },
{ MKTAG( 't', 'c', 'm', 'd' ), parse_leaf },
{ MKTAG( 'w', 'i', 'd', 'e' ), parse_wide }, /* place holder */
{ MKTAG( 'c', 't', 'a', 'b' ), parse_ctab },
{ MKTAG( 'e', 's', 'd', 's' ), parse_esds },
#ifdef CONFIG_ZLIB
{ MKTAG( 'c', 'm', 'o', 'v' ), parse_cmov },
#else
@ -1080,17 +1219,18 @@ static void mov_free_stream_context(MOVStreamContext *sc)
if(sc) {
av_free(sc->chunk_offsets);
av_free(sc->sample_to_chunk);
av_free(sc->sample_sizes);
av_free(sc->header_data);
av_free(sc);
}
}
static uint32_t to_tag(uint8_t *buf)
static inline uint32_t to_tag(uint8_t *buf)
{
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
}
static uint32_t to_be32(uint8_t *buf)
static inline uint32_t to_be32(uint8_t *buf)
{
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
}
@ -1206,7 +1346,7 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
MOVStreamContext *sc;
int64_t offset = 0x0FFFFFFFFFFFFFFF;
int i;
int st_id = 0, size;
int size;
size = 0x0FFFFFFF;
#ifdef MOV_SPLIT_CHUNKS
@ -1214,15 +1354,16 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
int idx;
st_id = mov->partial - 1;
idx = mov->streams[st_id]->sample_to_chunk_index;
sc = mov->partial;
idx = sc->sample_to_chunk_index;
if (idx < 0) return 0;
size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
size = sc->sample_sizes[sc->current_sample];
mov->streams[st_id]->current_sample++;
mov->streams[st_id]->left_in_chunk--;
sc->current_sample++;
sc->left_in_chunk--;
if(mov->streams[st_id]->left_in_chunk <= 0)
if (sc->left_in_chunk <= 0)
mov->partial = 0;
offset = mov->next_chunk_offset;
/* extract the sample */
@ -1232,16 +1373,21 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
#endif
again:
sc = 0;
for(i=0; i<mov->total_streams; i++) {
if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
&& (mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] < offset)) {
st_id = i;
offset = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk];
MOVStreamContext *msc = mov->streams[i];
//printf("MOCHUNK %ld %d %p pos:%Ld\n", mov->streams[i]->next_chunk, mov->total_streams, mov->streams[i], url_ftell(&s->pb));
if ((msc->next_chunk < msc->chunk_count) && msc->next_chunk >= 0
&& (msc->chunk_offsets[msc->next_chunk] < offset)) {
sc = msc;
offset = msc->chunk_offsets[msc->next_chunk];
//printf("SELETED %Ld i:%d\n", offset, i);
}
}
mov->streams[st_id]->next_chunk++;
if(offset==0x0FFFFFFFFFFFFFFF)
return -1;
if (!sc || offset==0x0FFFFFFFFFFFFFFF)
return -1;
sc->next_chunk++;
if(mov->next_chunk_offset < offset) { /* some meta data */
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
@ -1249,7 +1395,7 @@ again:
}
//printf("chunk: [%i] %lli -> %lli\n", st_id, mov->next_chunk_offset, offset);
if(!mov->streams[st_id]->is_ff_stream) {
if(!sc->is_ff_stream) {
url_fskip(&s->pb, (offset - mov->next_chunk_offset));
mov->next_chunk_offset = offset;
offset = 0x0FFFFFFFFFFFFFFF;
@ -1259,28 +1405,27 @@ again:
/* now get the chunk size... */
for(i=0; i<mov->total_streams; i++) {
if((mov->streams[i]->next_chunk < mov->streams[i]->chunk_count)
&& ((mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset) < size)) {
size = mov->streams[i]->chunk_offsets[mov->streams[i]->next_chunk] - offset;
}
MOVStreamContext *msc = mov->streams[i];
if ((msc->next_chunk < msc->chunk_count)
&& ((msc->chunk_offsets[msc->next_chunk] - offset) < size))
size = msc->chunk_offsets[msc->next_chunk] - offset;
}
#ifdef MOV_SPLIT_CHUNKS
/* split chunks into samples */
if(mov->streams[st_id]->sample_size == 0) {
int idx;
idx = mov->streams[st_id]->sample_to_chunk_index;
if ((idx + 1 < mov->streams[st_id]->sample_to_chunk_sz)
&& (mov->streams[st_id]->next_chunk >= mov->streams[st_id]->sample_to_chunk[idx + 1].first))
if (sc->sample_size == 0) {
int idx = sc->sample_to_chunk_index;
if ((idx + 1 < sc->sample_to_chunk_sz)
&& (sc->next_chunk >= sc->sample_to_chunk[idx + 1].first))
idx++;
mov->streams[st_id]->sample_to_chunk_index = idx;
if(idx >= 0 && mov->streams[st_id]->sample_to_chunk[idx].count != 1) {
mov->partial = st_id+1;
sc->sample_to_chunk_index = idx;
if (idx >= 0 && sc->sample_to_chunk[idx].count != 1) {
mov->partial = sc;
/* we'll have to get those samples before next chunk */
mov->streams[st_id]->left_in_chunk = (mov->streams[st_id]->sample_to_chunk[idx].count) - 1;
size = mov->streams[st_id]->sample_sizes[mov->streams[st_id]->current_sample];
sc->left_in_chunk = sc->sample_to_chunk[idx].count - 1;
size = sc->sample_sizes[sc->current_sample];
}
mov->streams[st_id]->current_sample++;
sc->current_sample++;
}
#endif
@ -1293,7 +1438,8 @@ readchunk:
if(size == 0)
return -1;
url_fseek(&s->pb, offset, SEEK_SET);
sc = mov->streams[st_id];
//printf("READCHUNK hlen: %d %d off: %Ld pos:%Ld\n", size, sc->header_len, offset, url_ftell(&s->pb));
if (sc->header_len > 0) {
av_new_packet(pkt, size + sc->header_len);
memcpy(pkt->data, sc->header_data, sc->header_len);

Write Preview
Loading…
Cancel
Save