Set start_time and duration in AVStream instead of AVFormatContext for

formats with only one stream; the AVFormatContext values will be derived from
the AVStream and this helps in calculating stream bitrate.

Originally committed as revision 21361 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/ape.c

@@ -310,8 +310,8 @@ static int ape_read_header(AVFormatContext * s, AVFormatParameters * ap)
     st->codec->frame_size      = MAC_SUBFRAME_SIZE;
 
     st->nb_frames = ape->totalframes;
-    s->start_time = 0;
-    s->duration   = (int64_t) total_blocks * AV_TIME_BASE / ape->samplerate;
+    st->start_time = 0;
+    st->duration  = total_blocks / MAC_SUBFRAME_SIZE;
     av_set_pts_info(st, 64, MAC_SUBFRAME_SIZE, ape->samplerate);
 
     st->codec->extradata = av_malloc(APE_EXTRADATA_SIZE);

libavformat/mpc.c

@@ -115,8 +115,8 @@ static int mpc_read_header(AVFormatContext *s, AVFormatParameters *ap)
     st->codec->sample_rate = mpc_rate[st->codec->extradata[2] & 3];
     av_set_pts_info(st, 32, MPC_FRAMESIZE, st->codec->sample_rate);
     /* scan for seekpoints */
-    s->start_time = 0;
-    s->duration = (int64_t)c->fcount * MPC_FRAMESIZE * AV_TIME_BASE / st->codec->sample_rate;
+    st->start_time = 0;
+    st->duration = c->fcount;
 
     /* try to read APE tags */
     if (!url_is_streamed(s->pb)) {

libavformat/wv.c

@@ -168,8 +168,8 @@ static int wv_read_header(AVFormatContext *s,
     st->codec->sample_rate = wc->rate;
     st->codec->bits_per_coded_sample = wc->bpp;
     av_set_pts_info(st, 64, 1, wc->rate);
-    s->start_time = 0;
-    s->duration = (int64_t)wc->samples * AV_TIME_BASE / st->codec->sample_rate;
+    st->start_time = 0;
+    st->duration = wc->samples;
 
     if(!url_is_streamed(s->pb)) {
         int64_t cur = url_ftell(s->pb);