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tiger: use the new premultiplied support in gstvideo

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This commit is contained in:
Vincent Penquerc'h 2011-12-14 19:27:53 +00:00
parent 7a9fff74c6
commit 8ba11fe2ff
1 changed files with 1 additions and 21 deletions
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22
ext/kate/gstkatetiger.c
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@ -776,7 +776,7 @@ gst_kate_tiger_set_composition (GstKateTiger * tiger)
rectangle = gst_video_overlay_rectangle_new_argb (tiger->render_buffer,
tiger->video_width, tiger->video_height, 4 * tiger->video_width,
0, 0, tiger->video_width, tiger->video_height,
GST_VIDEO_OVERLAY_FORMAT_FLAG_NONE);
GST_VIDEO_OVERLAY_FORMAT_FLAG_PREMULTIPLIED_ALPHA);
if (tiger->composition)
gst_video_overlay_composition_unref (tiger->composition);
@ -789,23 +789,6 @@ gst_kate_tiger_set_composition (GstKateTiger * tiger)
}
}
static inline void
gst_kate_tiger_unpremultiply (GstKateTiger * tiger)
{
guint i, j;
guint8 *pimage, *text_image = GST_BUFFER_DATA (tiger->render_buffer);
for (i = 0; i < tiger->video_height; i++) {
pimage = text_image + 4 * (i * tiger->video_width);
for (j = 0; j < tiger->video_width; j++) {
TIGER_UNPREMULTIPLY (pimage[TIGER_ARGB_A], pimage[TIGER_ARGB_R],
pimage[TIGER_ARGB_G], pimage[TIGER_ARGB_B]);
pimage += 4;
}
}
}
static GstFlowReturn
gst_kate_tiger_video_chain (GstPad * pad, GstBuffer * buf)
{
@ -895,9 +878,6 @@ gst_kate_tiger_video_chain (GstPad * pad, GstBuffer * buf)
}
if (gst_video_format_is_yuv (tiger->video_format)) {
/* As the GstVideoOverlayComposition supports only unpremultiply ARGB,
* we need to unpermultiply it */
gst_kate_tiger_unpremultiply (tiger);
gst_kate_tiger_set_composition (tiger);
if (tiger->composition)
gst_video_overlay_composition_blend (tiger->composition, buf);