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alpha: Use correct matrixes to convert chroma keying color to YUV

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This commit is contained in:
Sebastian Dröge 2010-03-20 10:18:04 +01:00
parent b64619dc4e
commit eb7a146b51
1 changed files with 22 additions and 3 deletions
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25
gst/alpha/gstalpha.c
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@ -944,9 +944,28 @@ gst_alpha_init_params (GstAlpha * alpha)
gfloat y;
const gint *matrix;
matrix =
(alpha->out_sdtv) ? cog_rgb_to_ycbcr_matrix_8bit_sdtv :
cog_rgb_to_ycbcr_matrix_8bit_hdtv;
/* RGB->RGB: convert to SDTV YUV, chroma keying, convert back
* YUV->RGB: chroma keying, convert to RGB
* RGB->YUV: convert to YUV, chroma keying
* YUV->YUV: convert matrix, chroma keying
*/
if (gst_video_format_is_rgb (alpha->in_format)
&& gst_video_format_is_rgb (alpha->out_format))
matrix = cog_rgb_to_ycbcr_matrix_8bit_sdtv;
else if (gst_video_format_is_yuv (alpha->in_format)
&& gst_video_format_is_rgb (alpha->out_format))
matrix =
(alpha->in_sdtv) ? cog_rgb_to_ycbcr_matrix_8bit_sdtv :
cog_rgb_to_ycbcr_matrix_8bit_hdtv;
else if (gst_video_format_is_rgb (alpha->in_format)
&& gst_video_format_is_yuv (alpha->out_format))
matrix =
(alpha->out_sdtv) ? cog_rgb_to_ycbcr_matrix_8bit_sdtv :
cog_rgb_to_ycbcr_matrix_8bit_hdtv;
else /* yuv -> yuv */
matrix =
(alpha->out_sdtv) ? cog_rgb_to_ycbcr_matrix_8bit_sdtv :
cog_rgb_to_ycbcr_matrix_8bit_hdtv;
y = (matrix[0] * ((gint) alpha->target_r) +
matrix[1] * ((gint) alpha->target_g) +