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Code Issues Releases Activity

fix pts handling

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Originally committed as revision 8299 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2007-03-08 21:29:38 +00:00
parent d0429b4ff5
commit b912ef3fc9
1 changed files with 7 additions and 16 deletions
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23
libavformat/swf.c
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@ -67,7 +67,7 @@ typedef struct {
int sound_samples;
int swf_frame_number;
int video_frame_number;
int ms_per_frame;
int frame_rate;
int tag;
uint8_t audio_fifo[AUDIO_FIFO_SIZE];
@ -631,7 +631,7 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
SWFContext *swf = s->priv_data;
ByteIOContext *pb = &s->pb;
int nbits, len, frame_rate, tag, v;
int nbits, len, tag, v;
offset_t frame_offset = -1;
AVStream *ast = 0;
AVStream *vst = 0;
@ -650,13 +650,9 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
nbits = get_byte(pb) >> 3;
len = (4 * nbits - 3 + 7) / 8;
url_fskip(pb, len);
frame_rate = get_le16(pb);
swf->frame_rate = get_le16(pb); /* 8.8 fixed */
get_le16(pb); /* frame count */
/* The Flash Player converts 8.8 frame rates
to milliseconds internally. Do the same to get
a correct framerate */
swf->ms_per_frame = ( 1000 * 256 ) / frame_rate;
swf->samples_per_frame = 0;
for(;;) {
@ -683,7 +679,7 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
v = get_byte(pb);
swf->samples_per_frame = get_le16(pb);
ast = av_new_stream(s, -1); /* -1 to avoid clash with video stream ch_id */
av_set_pts_info(ast, 24, 1, 1000); /* 24 bit pts in ms */
av_set_pts_info(ast, 64, 256, swf->frame_rate); /* XXX same as video stream */
swf->audio_stream_index = ast->index;
ast->codec->channels = 1 + (v&1);
ast->codec->codec_type = CODEC_TYPE_AUDIO;
@ -706,13 +702,8 @@ static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
url_fskip(pb, len);
}
}
if (vst) {
av_set_pts_info(vst, 24, 1, 1000); /* 24 bit pts in ms */
if (swf->ms_per_frame) {
vst->codec->time_base.den = 1000. / swf->ms_per_frame;
vst->codec->time_base.num = 1;
}
}
if (vst)
av_set_pts_info(vst, 64, 256, swf->frame_rate);
return 0;
}
@ -735,7 +726,7 @@ static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
if (st->codec->codec_type == CODEC_TYPE_VIDEO && st->id == ch_id) {
frame = get_le16(pb);
av_get_packet(pb, pkt, len-2);
pkt->pts = frame * swf->ms_per_frame;
pkt->pts = frame;
pkt->stream_index = st->index;
return pkt->size;
}