[Ffmpeg-cvslog] r8012 - trunk/libavcodec/i386/dsputil_h264_template_mmx.c
michael
subversion
Sun Feb 18 00:43:02 CET 2007
Author: michael
Date: Sun Feb 18 00:43:02 2007
New Revision: 8012
Modified:
trunk/libavcodec/i386/dsputil_h264_template_mmx.c
Log:
rewrite H264_CHROMA_MC4_TMPL (20% faster)
Modified: trunk/libavcodec/i386/dsputil_h264_template_mmx.c
==============================================================================
--- trunk/libavcodec/i386/dsputil_h264_template_mmx.c (original)
+++ trunk/libavcodec/i386/dsputil_h264_template_mmx.c Sun Feb 18 00:43:02 2007
@@ -184,82 +184,70 @@
static void H264_CHROMA_MC4_TMPL(uint8_t *dst/*align 4*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
{
- DECLARE_ALIGNED_8(uint64_t, AA);
- DECLARE_ALIGNED_8(uint64_t, DD);
- int i;
-
- /* no special case for mv=(0,0) in 4x*, since it's much less common than in 8x*.
- * could still save a few cycles, but maybe not worth the complexity. */
-
- assert(x<8 && y<8 && x>=0 && y>=0);
-
- asm volatile("movd %2, %%mm4\n\t"
- "movd %3, %%mm6\n\t"
- "punpcklwd %%mm4, %%mm4\n\t"
- "punpcklwd %%mm6, %%mm6\n\t"
- "punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */
- "punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */
- "movq %%mm4, %%mm5\n\t"
- "pmullw %%mm6, %%mm4\n\t" /* mm4 = x * y */
- "psllw $3, %%mm5\n\t"
- "psllw $3, %%mm6\n\t"
- "movq %%mm5, %%mm7\n\t"
- "paddw %%mm6, %%mm7\n\t"
- "movq %%mm4, %1\n\t" /* DD = x * y */
- "psubw %%mm4, %%mm5\n\t" /* mm5 = B = 8x - xy */
- "psubw %%mm4, %%mm6\n\t" /* mm6 = C = 8y - xy */
- "paddw %4, %%mm4\n\t"
- "psubw %%mm7, %%mm4\n\t" /* mm4 = A = xy - (8x+8y) + 64 */
- "pxor %%mm7, %%mm7\n\t"
- "movq %%mm4, %0\n\t"
- : "=m" (AA), "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));
-
asm volatile(
- /* mm0 = src[0..3], mm1 = src[1..4] */
- "movd %0, %%mm0\n\t"
- "movd %1, %%mm1\n\t"
- "punpcklbw %%mm7, %%mm0\n\t"
- "punpcklbw %%mm7, %%mm1\n\t"
- : : "m" (src[0]), "m" (src[1]));
-
- for(i=0; i<h; i++) {
- asm volatile(
- /* mm2 = A * src[0..3] + B * src[1..4] */
- "movq %%mm0, %%mm2\n\t"
- "pmullw %0, %%mm2\n\t"
- "pmullw %%mm5, %%mm1\n\t"
- "paddw %%mm1, %%mm2\n\t"
- : : "m" (AA));
-
- src += stride;
- asm volatile(
- /* mm0 = src[0..3], mm1 = src[1..4] */
- "movd %0, %%mm0\n\t"
- "movd %1, %%mm1\n\t"
- "punpcklbw %%mm7, %%mm0\n\t"
- "punpcklbw %%mm7, %%mm1\n\t"
- : : "m" (src[0]), "m" (src[1]));
-
- asm volatile(
- /* mm2 += C * src[0..3] + D * src[1..4] */
- "movq %%mm0, %%mm3\n\t"
- "movq %%mm1, %%mm4\n\t"
- "pmullw %%mm6, %%mm3\n\t"
- "pmullw %0, %%mm4\n\t"
- "paddw %%mm3, %%mm2\n\t"
- "paddw %%mm4, %%mm2\n\t"
- : : "m" (DD));
-
- asm volatile(
- /* dst[0..3] = pack((mm2 + 32) >> 6) */
- "paddw %1, %%mm2\n\t"
- "psrlw $6, %%mm2\n\t"
- "packuswb %%mm7, %%mm2\n\t"
- H264_CHROMA_OP4(%0, %%mm2, %%mm3)
- "movd %%mm2, %0\n\t"
- : "=m" (dst[0]) : "m" (ff_pw_32));
- dst += stride;
- }
+ "pxor %%mm7, %%mm7 \n\t"
+ "movd %5, %%mm2 \n\t"
+ "movd %6, %%mm3 \n\t"
+ "movq %7, %%mm4 \n\t"
+ "movq %7, %%mm5 \n\t"
+ "punpcklwd %%mm2, %%mm2 \n\t"
+ "punpcklwd %%mm3, %%mm3 \n\t"
+ "punpcklwd %%mm2, %%mm2 \n\t"
+ "punpcklwd %%mm3, %%mm3 \n\t"
+ "psubw %%mm2, %%mm4 \n\t"
+ "psubw %%mm3, %%mm5 \n\t"
+
+ "movd (%1), %%mm0 \n\t"
+ "movd 1(%1), %%mm6 \n\t"
+ "add %3, %1 \n\t"
+ "punpcklbw %%mm7, %%mm0 \n\t"
+ "punpcklbw %%mm7, %%mm6 \n\t"
+ "pmullw %%mm4, %%mm0 \n\t"
+ "pmullw %%mm2, %%mm6 \n\t"
+ "paddw %%mm0, %%mm6 \n\t"
+
+ "1: \n\t"
+ "movd (%1), %%mm0 \n\t"
+ "movd 1(%1), %%mm1 \n\t"
+ "add %3, %1 \n\t"
+ "punpcklbw %%mm7, %%mm0 \n\t"
+ "punpcklbw %%mm7, %%mm1 \n\t"
+ "pmullw %%mm4, %%mm0 \n\t"
+ "pmullw %%mm2, %%mm1 \n\t"
+ "paddw %%mm0, %%mm1 \n\t"
+ "movq %%mm1, %%mm0 \n\t"
+ "pmullw %%mm5, %%mm6 \n\t"
+ "pmullw %%mm3, %%mm1 \n\t"
+ "paddw %%mm6, %%mm1 \n\t"
+ "paddw %4, %%mm1 \n\t"
+ "psrlw $6, %%mm1 \n\t"
+ "packuswb %%mm1, %%mm1 \n\t"
+ H264_CHROMA_OP4((%0), %%mm1, %%mm6)
+ "movd %%mm1, (%0) \n\t"
+ "add %3, %0 \n\t"
+ "movd (%1), %%mm6 \n\t"
+ "movd 1(%1), %%mm1 \n\t"
+ "add %3, %1 \n\t"
+ "punpcklbw %%mm7, %%mm6 \n\t"
+ "punpcklbw %%mm7, %%mm1 \n\t"
+ "pmullw %%mm4, %%mm6 \n\t"
+ "pmullw %%mm2, %%mm1 \n\t"
+ "paddw %%mm6, %%mm1 \n\t"
+ "movq %%mm1, %%mm6 \n\t"
+ "pmullw %%mm5, %%mm0 \n\t"
+ "pmullw %%mm3, %%mm1 \n\t"
+ "paddw %%mm0, %%mm1 \n\t"
+ "paddw %4, %%mm1 \n\t"
+ "psrlw $6, %%mm1 \n\t"
+ "packuswb %%mm1, %%mm1 \n\t"
+ H264_CHROMA_OP4((%0), %%mm1, %%mm0)
+ "movd %%mm1, (%0) \n\t"
+ "add %3, %0 \n\t"
+ "sub $2, %2 \n\t"
+ "jnz 1b \n\t"
+ : "+r"(dst), "+r"(src), "+r"(h)
+ : "r"(stride), "m"(ff_pw_32), "m"(x), "m"(y), "m"(ff_pw_8)
+ );
}
#ifdef H264_CHROMA_MC2_TMPL
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