yvu9 -> yv12 unscaled converter with linear chroma scaling

Originally committed as revision 6583 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

1 files changed, 89 insertions, 0 deletions

diff --git a/postproc/rgb2rgb_template.c b/postproc/rgb2rgb_template.c
index 015e7f2d56..b6c26a11ee 100644
--- a/postproc/rgb2rgb_template.c
+++ b/postproc/rgb2rgb_template.c
@@ -1295,6 +1295,95 @@ static inline void RENAME(yvu9toyv12)(const uint8_t *ysrc, const uint8_t *usrc,
 	/* XXX: implement upscaling for U,V */
 }
 
+static inline void RENAME(planar2x)(const uint8_t *src, uint8_t *dst, int srcWidth, int srcHeight, int srcStride, int dstStride)
+{
+	int x,y;
+	
+	// first line
+	for(x=0; x<srcWidth; x++){
+		dst[2*x+0]=
+		dst[2*x+1]= src[x];
+	}
+	dst+= dstStride;
+
+	for(y=1; y<srcHeight; y++){
+#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
+		const int mmxSize= srcWidth;
+		asm volatile(
+			"movl %4, %%eax			\n\t"
+			"1:				\n\t"
+			"movq (%0, %%eax), %%mm0	\n\t"
+			"movq (%1, %%eax), %%mm1	\n\t"
+			"movq 1(%0, %%eax), %%mm2	\n\t"
+			"movq 1(%1, %%eax), %%mm3	\n\t"
+			"movq %%mm0, %%mm4		\n\t"
+			"movq %%mm1, %%mm5		\n\t"
+			PAVGB" %%mm3, %%mm0		\n\t"
+			PAVGB" %%mm3, %%mm0		\n\t"
+			PAVGB" %%mm4, %%mm3		\n\t"
+			PAVGB" %%mm4, %%mm3		\n\t"
+			PAVGB" %%mm2, %%mm1		\n\t"
+			PAVGB" %%mm2, %%mm1		\n\t"
+			PAVGB" %%mm5, %%mm2		\n\t"
+			PAVGB" %%mm5, %%mm2		\n\t"
+			"movq %%mm3, %%mm4		\n\t"
+			"movq %%mm2, %%mm5		\n\t"
+			"punpcklbw %%mm1, %%mm3		\n\t"
+			"punpckhbw %%mm1, %%mm4		\n\t"
+			"punpcklbw %%mm0, %%mm2		\n\t"
+			"punpckhbw %%mm0, %%mm5		\n\t"
+#if 1
+			MOVNTQ" %%mm3, (%2, %%eax, 2)	\n\t"
+			MOVNTQ" %%mm4, 8(%2, %%eax, 2)	\n\t"
+			MOVNTQ" %%mm2, (%3, %%eax, 2)	\n\t"
+			MOVNTQ" %%mm5, 8(%3, %%eax, 2)	\n\t"
+#else
+			"movq %%mm3, (%2, %%eax, 2)	\n\t"
+			"movq %%mm4, 8(%2, %%eax, 2)	\n\t"
+			"movq %%mm2, (%3, %%eax, 2)	\n\t"
+			"movq %%mm5, 8(%3, %%eax, 2)	\n\t"
+#endif
+			"addl $8, %%eax			\n\t"
+			" js 1b				\n\t"
+			:: "r" (src + mmxSize-1), "r" (src + srcStride + mmxSize-1),
+			   "r" (dst + mmxSize*2), "r" (dst + dstStride + mmxSize*2),
+			   "g" (-mmxSize)
+			: "%eax"
+
+		);
+		dst[0]= 
+		dst[dstStride]= src[0];
+#else
+		dst[0]= 
+		dst[dstStride]= src[0];
+
+		for(x=0; x<srcWidth-1; x++){
+			dst[2*x          +1]= (3*src[x+0] +   src[x+srcStride+1])>>2;
+			dst[2*x+dstStride+2]= (  src[x+0] + 3*src[x+srcStride+1])>>2;
+			dst[2*x+dstStride+1]= (  src[x+1] + 3*src[x+srcStride  ])>>2;
+			dst[2*x          +2]= (3*src[x+1] +   src[x+srcStride  ])>>2;
+		}
+#endif
+		dst[srcWidth*2 -1]= 
+		dst[srcWidth*2 -1 + dstStride]= src[srcWidth-1];
+
+		dst+=dstStride*2;
+		src+=srcStride;
+	}
+	src-=srcStride;
+	
+	// last line
+	for(x=0; x<srcWidth; x++){
+		dst[2*x+0]=
+		dst[2*x+1]= src[x];
+	}
+#ifdef HAVE_MMX
+asm volatile(   EMMS" \n\t"
+        	SFENCE" \n\t"
+        	:::"memory");
+#endif
+}
+
 /**
  *
  * height should be a multiple of 2 and width should be a multiple of 16 (if this is a