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-rw-r--r--graphics/yuv_to_rgb.cpp46
1 files changed, 46 insertions, 0 deletions
diff --git a/graphics/yuv_to_rgb.cpp b/graphics/yuv_to_rgb.cpp
index feda48bf6d..ac7f217fee 100644
--- a/graphics/yuv_to_rgb.cpp
+++ b/graphics/yuv_to_rgb.cpp
@@ -199,6 +199,52 @@ namespace Graphics {
*((PixelInt *)(d)) = (L[cr_r] | L[crb_g] | L[cb_b])
template<typename PixelInt>
+void convertYUV444ToRGB(byte *dstPtr, int dstPitch, const YUVToRGBLookup *lookup, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch) {
+ // Keep the tables in pointers here to avoid a dereference on each pixel
+ const int16 *Cr_r_tab = lookup->_colorTab;
+ const int16 *Cr_g_tab = Cr_r_tab + 256;
+ const int16 *Cb_g_tab = Cr_g_tab + 256;
+ const int16 *Cb_b_tab = Cb_g_tab + 256;
+ const uint32 *rgbToPix = lookup->_rgbToPix;
+
+ for (int h = 0; h < yHeight; h++) {
+ for (int w = 0; w < yWidth; w++) {
+ register const uint32 *L;
+
+ int16 cr_r = Cr_r_tab[*vSrc];
+ int16 crb_g = Cr_g_tab[*vSrc] + Cb_g_tab[*uSrc];
+ int16 cb_b = Cb_b_tab[*uSrc];
+ ++uSrc;
+ ++vSrc;
+
+ PUT_PIXEL(*ySrc, dstPtr);
+ ySrc++;
+ dstPtr += sizeof(PixelInt);
+ }
+
+ dstPtr += dstPitch - yWidth * sizeof(PixelInt);
+ ySrc += yPitch - yWidth;
+ uSrc += uvPitch - yWidth;
+ vSrc += uvPitch - yWidth;
+ }
+}
+
+void convertYUV444ToRGB(Graphics::Surface *dst, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch) {
+ // Sanity checks
+ assert(dst && dst->pixels);
+ assert(dst->format.bytesPerPixel == 2 || dst->format.bytesPerPixel == 4);
+ assert(ySrc && uSrc && vSrc);
+
+ const YUVToRGBLookup *lookup = YUVToRGBMan.getLookup(dst->format);
+
+ // Use a templated function to avoid an if check on every pixel
+ if (dst->format.bytesPerPixel == 2)
+ convertYUV444ToRGB<uint16>((byte *)dst->pixels, dst->pitch, lookup, ySrc, uSrc, vSrc, yWidth, yHeight, yPitch, uvPitch);
+ else
+ convertYUV444ToRGB<uint32>((byte *)dst->pixels, dst->pitch, lookup, ySrc, uSrc, vSrc, yWidth, yHeight, yPitch, uvPitch);
+}
+
+template<typename PixelInt>
void convertYUV420ToRGB(byte *dstPtr, int dstPitch, const YUVToRGBLookup *lookup, const byte *ySrc, const byte *uSrc, const byte *vSrc, int yWidth, int yHeight, int yPitch, int uvPitch) {
int halfHeight = yHeight >> 1;
int halfWidth = yWidth >> 1;