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shapewipe: Try to work inplace if possible

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This saves one new, large allocation per frame for the
most cases.
This commit is contained in:
Sebastian Dröge 2009-06-09 18:25:13 +02:00
parent 3b99292629
commit 80d5bd7168
1 changed files with 19 additions and 8 deletions
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27
gst/shapewipe/gstshapewipe.c
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@ -686,6 +686,7 @@ gst_shape_wipe_video_sink_chain (GstPad * pad, GstBuffer * buffer)
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *mask = NULL, *outbuf = NULL;
GstClockTime timestamp;
gboolean new_outbuf = FALSE;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
timestamp =
@ -711,13 +712,21 @@ gst_shape_wipe_video_sink_chain (GstPad * pad, GstBuffer * buffer)
}
g_mutex_unlock (self->mask_mutex);
ret =
gst_pad_alloc_buffer_and_set_caps (self->srcpad, GST_BUFFER_OFFSET_NONE,
GST_BUFFER_SIZE (buffer), GST_PAD_CAPS (self->srcpad), &outbuf);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
gst_buffer_unref (buffer);
gst_buffer_unref (mask);
return ret;
/* Try to blend inplace, if it's not possible
* get a new buffer from downstream.
*/
if (!gst_buffer_is_writable (buffer)) {
ret =
gst_pad_alloc_buffer_and_set_caps (self->srcpad, GST_BUFFER_OFFSET_NONE,
GST_BUFFER_SIZE (buffer), GST_PAD_CAPS (self->srcpad), &outbuf);
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
gst_buffer_unref (buffer);
gst_buffer_unref (mask);
return ret;
}
new_outbuf = TRUE;
} else {
outbuf = buffer;
}
if (self->mask_bpp == 16)
@ -726,7 +735,9 @@ gst_shape_wipe_video_sink_chain (GstPad * pad, GstBuffer * buffer)
ret = gst_shape_wipe_blend_8 (self, buffer, mask, outbuf);
gst_buffer_unref (mask);
gst_buffer_unref (buffer);
if (new_outbuf)
gst_buffer_unref (buffer);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (outbuf);
return ret;