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Hint bytestream about optimal size sync fixes for VBR streams

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Original commit message from CVS:
Hint bytestream about optimal size
sync fixes for VBR streams
This commit is contained in:
Wim Taymans 2002-06-14 20:01:47 +00:00
parent 25bbab292f
commit 3616ba23f6
2 changed files with 25 additions and 9 deletions
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33
gst/avi/gstavidemux.c
View file

@ -357,6 +357,8 @@ gst_avi_demux_strh (GstAviDemux *avi_demux)
target->skip = 0;
avi_demux->avih.bufsize = MAX (avi_demux->avih.bufsize, target->strh.bufsize);
return TRUE;
}
return FALSE;
@ -644,6 +646,8 @@ gst_avi_demux_parse_index (GstAviDemux *avi_demux,
index_size = GUINT32_FROM_LE(*(guint32 *)(GST_BUFFER_DATA (buf) + 4));
gst_buffer_unref (buf);
gst_bytestream_size_hint (avi_demux->bs, index_size);
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, index_size);
if (got_bytes < index_size) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: error reading index");
@ -684,20 +688,29 @@ gst_avi_demux_parse_index (GstAviDemux *avi_demux,
if (stream->strh.type == GST_RIFF_FCC_auds) {
/* all audio frames are keyframes */
target->flags |= GST_RIFF_IF_KEYFRAME;
}
/* constant rate stream */
if (stream->strh.samplesize) {
gst_pad_convert (stream->pad, GST_FORMAT_BYTES, stream->total_bytes,
&format, &target->ts);
}
/* VBR stream */
else {
gst_pad_convert (stream->pad, GST_FORMAT_UNITS, stream->total_frames,
&format, &target->ts);
}
gst_avi_debug_entry ("index", target);
stream->total_bytes += target->size;
stream->total_frames++;
}
for (i = 0; i < avi_demux->num_streams; i++) {
avi_stream_context *stream;
stream = &avi_demux->stream[i];
GST_DEBUG (GST_CAT_PLUGIN_INFO, "stream %i: %d frames, %lld bytes", i, stream->total_frames, stream->total_bytes);
}
gst_buffer_unref (buf);
end:
@ -780,7 +793,7 @@ gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
switch (*dest_format) {
case GST_FORMAT_TIME:
if (stream->strh.type == GST_RIFF_FCC_auds)
*dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate;
*dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate;
else
res = FALSE;
default:
@ -847,21 +860,21 @@ gst_avi_demux_handle_src_query (GstPad *pad, GstPadQueryType type,
*format = GST_FORMAT_TIME;
/* fall through */
case GST_FORMAT_TIME:
if (stream->strh.type == GST_RIFF_FCC_vids)
*value = stream->current_frame * GST_SECOND * stream->strh.scale / stream->strh.rate;
else
if (stream->strh.samplesize) {
*value = stream->current_byte * GST_SECOND * stream->strh.scale / stream->strh.rate;
}
else {
*value = stream->current_frame * GST_SECOND * stream->strh.scale / stream->strh.rate;
}
break;
case GST_FORMAT_BYTES:
*value = stream->current_byte;
break;
case GST_FORMAT_UNITS:
if (stream->strh.type == GST_RIFF_FCC_auds)
if (stream->strh.samplesize)
*value = stream->current_byte * stream->strh.samplesize;
else if (stream->strh.type == GST_RIFF_FCC_vids)
else
*value = stream->current_frame;
else
res = FALSE;
break;
default:
res = FALSE;
@ -1118,6 +1131,8 @@ gst_avi_demux_process_chunk (GstAviDemux *avi_demux, guint64 *filepos,
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
}
if (avi_demux->avih.bufsize)
gst_bytestream_size_hint (avi_demux->bs, avi_demux->avih.bufsize);
break;
default:
/* flush the form type */

1
gst/avi/gstavidemux.h
View file

@ -73,6 +73,7 @@ typedef struct
guint32 current_byte;
guint64 delay;
gboolean need_flush;
guint32 av_bps;
guint64 total_bytes;
gint32 total_frames;