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tta demuxer: set packet duration

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This commit is contained in:
Justin Ruggles 2012-01-13 13:35:06 -05:00
parent 0b8b7db01b
commit 101c369b7c
1 changed files with 12 additions and 4 deletions
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16
libavformat/tta.c
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@ -27,6 +27,8 @@
typedef struct {
int totalframes, currentframe;
int frame_size;
int last_frame_size;
} TTAContext;
static int tta_probe(AVProbeData *p)
@ -42,7 +44,7 @@ static int tta_read_header(AVFormatContext *s)
{
TTAContext *c = s->priv_data;
AVStream *st;
int i, channels, bps, samplerate, datalen, framelen;
int i, channels, bps, samplerate, datalen;
uint64_t framepos, start_offset;
if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
@ -69,8 +71,11 @@ static int tta_read_header(AVFormatContext *s)
avio_skip(s->pb, 4); // header crc
framelen = samplerate*256/245;
c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0);
c->frame_size = samplerate * 256 / 245;
c->last_frame_size = datalen % c->frame_size;
if (!c->last_frame_size)
c->last_frame_size = c->frame_size;
c->totalframes = datalen / c->frame_size + (c->last_frame_size < c->frame_size);
c->currentframe = 0;
if(c->totalframes >= UINT_MAX/sizeof(uint32_t)){
@ -90,7 +95,8 @@ static int tta_read_header(AVFormatContext *s)
for (i = 0; i < c->totalframes; i++) {
uint32_t size = avio_rl32(s->pb);
av_add_index_entry(st, framepos, i*framelen, size, 0, AVINDEX_KEYFRAME);
av_add_index_entry(st, framepos, i * c->frame_size, size, 0,
AVINDEX_KEYFRAME);
framepos += size;
}
avio_skip(s->pb, 4); // seektable crc
@ -132,6 +138,8 @@ static int tta_read_packet(AVFormatContext *s, AVPacket *pkt)
ret = av_get_packet(s->pb, pkt, size);
pkt->dts = st->index_entries[c->currentframe++].timestamp;
pkt->duration = c->currentframe == c->totalframes ? c->last_frame_size :
c->frame_size;
return ret;
}