apply patch from Jean Baptiste to add rgb24a support to producer_pixbuf

[melted] / src / framework / mlt_frame.c

diff --git a/src/framework/mlt_frame.c b/src/framework/mlt_frame.c
index e178984..9c6922b 100644 (file)
--- a/src/framework/mlt_frame.c
+++ b/src/framework/mlt_frame.c
@@ -529,6 +529,41 @@ void mlt_frame_close( mlt_frame this )
 
 /***** convenience functions *****/
 
+int mlt_convert_yuv422_to_rgb24a( uint8_t *yuv, uint8_t *rgba, unsigned int total )
+{
+       int ret = 0;
+       int yy, uu, vv, ug_plus_vg, ub, vr;
+       int r,g,b;
+       total /= 2;
+       while (total--) 
+       {
+               yy = yuv[0] << 8;
+               uu = yuv[1] - 128;
+               vv = yuv[3] - 128;
+               ug_plus_vg = uu * 88 + vv * 183;
+               ub = uu * 454;
+               vr = vv * 359;
+               r = (yy + vr) >> 8;
+               g = (yy - ug_plus_vg) >> 8;
+               b = (yy + ub) >> 8;
+               rgba[0] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
+               rgba[1] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
+               rgba[2] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
+               rgba[3] = 255;
+               yy = yuv[2] << 8;
+               r = (yy + vr) >> 8;
+               g = (yy - ug_plus_vg) >> 8;
+               b = (yy + ub) >> 8;
+               rgba[4] = r < 0 ? 0 : (r > 255 ? 255 : (unsigned char)r);
+               rgba[5] = g < 0 ? 0 : (g > 255 ? 255 : (unsigned char)g);
+               rgba[6] = b < 0 ? 0 : (b > 255 ? 255 : (unsigned char)b);
+               rgba[7] = 255;
+               yuv += 4;
+               rgba += 8;
+       }
+       return ret;
+}
+
 int mlt_convert_rgb24a_to_yuv422( uint8_t *rgba, int width, int height, int stride, uint8_t *yuv, uint8_t *alpha )
 {
        int ret = 0;