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Simplify ipmovie.c pts calculation by using an appropriate time_base. 

Originally committed as revision 17639 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-02-27 10:07:12 +00:00
parent f3592353ce
commit 03c03afde7
1 changed files with 7 additions and 15 deletions
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22
libavformat/ipmovie.c
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@ -93,8 +93,7 @@ typedef struct IPMVEContext {
unsigned char *buf;
int buf_size;
float fps;
int frame_pts_inc;
uint64_t frame_pts_inc;
unsigned int video_width;
unsigned int video_height;
@ -126,7 +125,6 @@ static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
AVPacket *pkt) {
int chunk_type;
int64_t audio_pts = 0;
if (s->audio_chunk_offset) {
@ -139,16 +137,11 @@ static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
url_fseek(pb, s->audio_chunk_offset, SEEK_SET);
s->audio_chunk_offset = 0;
/* figure out the audio pts */
audio_pts = 90000;
audio_pts *= s->audio_frame_count;
audio_pts /= s->audio_sample_rate;
if (s->audio_chunk_size != av_get_packet(pb, pkt, s->audio_chunk_size))
return CHUNK_EOF;
pkt->stream_index = s->audio_stream_index;
pkt->pts = audio_pts;
pkt->pts = s->audio_frame_count;
/* audio frame maintenance */
if (s->audio_type != CODEC_ID_INTERPLAY_DPCM)
@ -159,7 +152,7 @@ static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
(s->audio_chunk_size - 6) / s->audio_channels;
debug_ipmovie("sending audio frame with pts %"PRId64" (%d audio frames)\n",
audio_pts, s->audio_frame_count);
pkt->pts, s->audio_frame_count);
chunk_type = CHUNK_VIDEO;
@ -327,10 +320,9 @@ static int process_ipmovie_chunk(IPMVEContext *s, ByteIOContext *pb,
chunk_type = CHUNK_BAD;
break;
}
s->fps = 1000000.0 / (AV_RL32(&scratch[0]) * AV_RL16(&scratch[4]));
s->frame_pts_inc = 90000 / s->fps;
s->frame_pts_inc = ((uint64_t)AV_RL32(&scratch[0])) * AV_RL16(&scratch[4]);
debug_ipmovie(" %.2f frames/second (timer div = %d, subdiv = %d)\n",
s->fps, AV_RL32(&scratch[0]), AV_RL16(&scratch[4]));
1000000.0/s->frame_pts_inc, AV_RL32(&scratch[0]), AV_RL16(&scratch[4]));
break;
case OPCODE_INIT_AUDIO_BUFFERS:
@ -554,7 +546,7 @@ static int ipmovie_read_header(AVFormatContext *s,
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
av_set_pts_info(st, 33, 1, 90000);
av_set_pts_info(st, 63, 1, 1000000);
ipmovie->video_stream_index = st->index;
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_INTERPLAY_VIDEO;
@ -569,7 +561,7 @@ static int ipmovie_read_header(AVFormatContext *s,
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
av_set_pts_info(st, 33, 1, 90000);
av_set_pts_info(st, 32, 1, ipmovie->audio_sample_rate);
ipmovie->audio_stream_index = st->index;
st->codec->codec_type = CODEC_TYPE_AUDIO;
st->codec->codec_id = ipmovie->audio_type;