static GstFlowReturn
gst_colorconvert_transform_ip (GstBaseTransform * base_transform,
GstBuffer * buf)
{
GstColorconvert *li;
CogFrame *frame;
CogFrame *vf;
g_return_val_if_fail (GST_IS_COLORCONVERT (base_transform), GST_FLOW_ERROR);
li = GST_COLORCONVERT (base_transform);
frame = gst_cog_buffer_wrap (gst_buffer_ref (buf),
li->format, li->width, li->height);
vf = cog_virt_frame_new_unpack (cog_frame_ref (frame));
vf = cog_virt_frame_new_subsample (vf, COG_FRAME_FORMAT_U8_444,
COG_CHROMA_SITE_MPEG2, 2);
vf = cog_virt_frame_new_color_transform (vf);
if (frame->format == COG_FRAME_FORMAT_YUYV) {
vf = cog_virt_frame_new_subsample (vf, COG_FRAME_FORMAT_U8_422,
COG_CHROMA_SITE_MPEG2, 2);
vf = cog_virt_frame_new_pack_YUY2 (vf);
} else if (frame->format == COG_FRAME_FORMAT_UYVY) {
vf = cog_virt_frame_new_subsample (vf, COG_FRAME_FORMAT_U8_422,
COG_CHROMA_SITE_MPEG2, 2);
vf = cog_virt_frame_new_pack_UYVY (vf);
} else if (frame->format == COG_FRAME_FORMAT_AYUV) {
vf = cog_virt_frame_new_pack_AYUV (vf);
} else if (frame->format == COG_FRAME_FORMAT_U8_420) {
vf = cog_virt_frame_new_subsample (vf, COG_FRAME_FORMAT_U8_420,
COG_CHROMA_SITE_MPEG2, 2);
} else {
g_assert_not_reached ();
}
cog_virt_frame_render (vf, frame);
cog_frame_unref (frame);
cog_frame_unref (vf);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_logoinsert_transform_ip (GstBaseTransform * base_transform, GstBuffer * buf)
{
GstLogoinsert *li;
CogFrame *frame;
g_return_val_if_fail (GST_IS_LOGOINSERT (base_transform), GST_FLOW_ERROR);
li = GST_LOGOINSERT (base_transform);
if (li->argb_frame == NULL)
return GST_FLOW_OK;
frame = gst_cog_buffer_wrap (gst_buffer_ref (buf),
li->format, li->width, li->height);
if (li->overlay_frame == NULL) {
CogFrame *f;
f = cog_virt_frame_extract_alpha (cog_frame_ref (li->argb_frame));
f = cog_virt_frame_new_subsample (f, frame->format,
COG_CHROMA_SITE_MPEG2, 2);
li->alpha_frame = cog_frame_realize (f);
f = cog_virt_frame_new_unpack (cog_frame_ref (li->argb_frame));
f = cog_virt_frame_new_color_matrix_RGB_to_YCbCr (f, COG_COLOR_MATRIX_SDTV,
8);
f = cog_virt_frame_new_subsample (f, frame->format,
COG_CHROMA_SITE_MPEG2, 2);
li->overlay_frame = cog_frame_realize (f);
}
if (1) {
int i, j;
int k;
guint8 *dest;
guint8 *src;
guint8 *alpha;
int offset_x, offset_y;
for (k = 0; k < 3; k++) {
offset_x = frame->components[k].width -
li->alpha_frame->components[k].width;
offset_y = frame->components[k].height -
li->alpha_frame->components[k].height;
for (j = 0; j < li->overlay_frame->components[k].height; j++) {
dest = COG_FRAME_DATA_GET_LINE (frame->components + k, j + offset_y);
src = COG_FRAME_DATA_GET_LINE (li->overlay_frame->components + k, j);
alpha = COG_FRAME_DATA_GET_LINE (li->alpha_frame->components + k, j);
#define oil_divide_255(x) ((((x)+128) + (((x)+128)>>8))>>8)
for (i = 0; i < li->overlay_frame->components[k].width; i++) {
dest[i + offset_x] =
oil_divide_255 (src[i] * alpha[i] + dest[i + offset_x] * (255 -
alpha[i]));
}
}
}
}
cog_frame_unref (frame);
return GST_FLOW_OK;
}