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h264parse: optimize src caps updating

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This commit is contained in:
Mark Nauwelaerts 2010-01-07 17:54:28 +01:00
parent 51aaa30fab
commit 4067cd13c2
1 changed files with 14 additions and 4 deletions
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14
gst/h264parse/gsth264parse.c
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@ -1169,6 +1169,7 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
{
GstH264Sps *sps = NULL;
GstCaps *src_caps = NULL;
gboolean modified = FALSE;
/* current PPS dictates which SPS to use */
if (h264parse->pps && h264parse->pps->sps_id < MAX_SPS_COUNT) {
@ -1179,10 +1180,12 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
sps = h264parse->sps;
}
if (G_UNLIKELY (h264parse->src_caps == NULL))
if (G_UNLIKELY (h264parse->src_caps == NULL)) {
src_caps = gst_caps_copy (caps);
else
modified = TRUE;
} else {
src_caps = gst_caps_ref (h264parse->src_caps);
}
src_caps = gst_caps_make_writable (src_caps);
g_return_val_if_fail (src_caps != NULL, FALSE);
@ -1199,6 +1202,7 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
GST_DEBUG_OBJECT (h264parse, "updating caps w/h %dx%d", width, height);
gst_caps_set_simple (src_caps, "width", G_TYPE_INT, width,
"height", G_TYPE_INT, height, NULL);
modified = TRUE;
}
/* framerate */
@ -1217,6 +1221,7 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
GST_DEBUG_OBJECT (h264parse, "updating caps fps %d/%d", fps_num, fps_den);
gst_caps_set_simple (src_caps,
"framerate", GST_TYPE_FRACTION, fps_num, fps_den, NULL);
modified = TRUE;
}
}
@ -1240,6 +1245,7 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
gst_caps_set_simple (src_caps, "codec_data", GST_TYPE_BUFFER, buf,
NULL);
gst_buffer_unref (buf);
modified = TRUE;
}
} else {
GST_DEBUG_OBJECT (h264parse, "no codec_data yet");
@ -1247,8 +1253,12 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
}
/* save as new caps, caps will be set when pushing data */
/* avoid replacing caps by a mere identical copy, thereby triggering
* negotiating (which e.g. some container might not appreciate) */
if (modified) {
gst_caps_replace (&h264parse->src_caps, src_caps);
gst_caps_unref (src_caps);
}
return TRUE;
}