[SCM] libav/experimental: add MMX version for put_no_rnd_h264_chroma_mc8_c, used in VC-1 decoding. patch by Christophe GISQUET %christophe P gisquet A free P fr% original thread: date: Nov 25, 2007 12:35 AM subject: Re: [FFmpeg-devel] MMX version for put_no_rnd_h264_chroma_mc8_c
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 16:10:48 UTC 2013
The following commit has been merged in the experimental branch:
commit 9fa35729039c1ccc3bc6ee9a10d3c613d88434cb
Author: Christophe Gisquet <christophe.gisquet at free.fr>
Date: Fri Dec 21 23:11:22 2007 +0000
add MMX version for put_no_rnd_h264_chroma_mc8_c, used in VC-1 decoding.
patch by Christophe GISQUET %christophe P gisquet A free P fr%
original thread:
date: Nov 25, 2007 12:35 AM
subject: Re: [FFmpeg-devel] MMX version for put_no_rnd_h264_chroma_mc8_c
Originally committed as revision 11298 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavcodec/i386/dsputil_h264_template_mmx.c b/libavcodec/i386/dsputil_h264_template_mmx.c
index e3da92f..a66f51e 100644
--- a/libavcodec/i386/dsputil_h264_template_mmx.c
+++ b/libavcodec/i386/dsputil_h264_template_mmx.c
@@ -25,8 +25,10 @@
* H264_CHROMA_OP must be defined to empty for put and pavgb/pavgusb for avg
* H264_CHROMA_MC8_MV0 must be defined to a (put|avg)_pixels8 function
*/
-static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
+static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y, int rnd)
{
+ DECLARE_ALIGNED_8(static const uint64_t, ff_pw_28) = 0x001C001C001C001CULL;
+ const uint64_t *rnd_reg;
DECLARE_ALIGNED_8(uint64_t, AA);
DECLARE_ALIGNED_8(uint64_t, DD);
int i;
@@ -44,16 +46,17 @@ static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*
/* 1 dimensional filter only */
const int dxy = x ? 1 : stride;
+ rnd_reg = rnd ? &ff_pw_4 : &ff_pw_3;
+
asm volatile(
"movd %0, %%mm5\n\t"
"movq %1, %%mm4\n\t"
+ "movq %2, %%mm6\n\t" /* mm6 = rnd */
"punpcklwd %%mm5, %%mm5\n\t"
"punpckldq %%mm5, %%mm5\n\t" /* mm5 = B = x */
- "movq %%mm4, %%mm6\n\t"
"pxor %%mm7, %%mm7\n\t"
"psubw %%mm5, %%mm4\n\t" /* mm4 = A = 8-x */
- "psrlw $1, %%mm6\n\t" /* mm6 = 4 */
- :: "rm"(x+y), "m"(ff_pw_8));
+ :: "rm"(x+y), "m"(ff_pw_8), "m"(*rnd_reg));
for(i=0; i<h; i++) {
asm volatile(
@@ -95,6 +98,7 @@ static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*
}
/* general case, bilinear */
+ rnd_reg = rnd ? &ff_pw_32 : &ff_pw_28;
asm volatile("movd %2, %%mm4\n\t"
"movd %3, %%mm6\n\t"
"punpcklwd %%mm4, %%mm4\n\t"
@@ -177,7 +181,7 @@ static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*
"packuswb %%mm3, %%mm2\n\t"
H264_CHROMA_OP(%0, %%mm2)
"movq %%mm2, %0\n\t"
- : "=m" (dst[0]) : "m" (ff_pw_32));
+ : "=m" (dst[0]) : "m" (*rnd_reg));
dst+= stride;
}
}
diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
index 9be90d9..8328c28 100644
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@@ -3371,8 +3371,9 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
c->h263_v_loop_filter= h263_v_loop_filter_mmx;
c->h263_h_loop_filter= h263_h_loop_filter_mmx;
}
- c->put_h264_chroma_pixels_tab[0]= put_h264_chroma_mc8_mmx;
+ c->put_h264_chroma_pixels_tab[0]= put_h264_chroma_mc8_mmx_rnd;
c->put_h264_chroma_pixels_tab[1]= put_h264_chroma_mc4_mmx;
+ c->put_no_rnd_h264_chroma_pixels_tab[0]= put_h264_chroma_mc8_mmx_nornd;
c->h264_idct_dc_add=
c->h264_idct_add= ff_h264_idct_add_mmx;
@@ -3485,7 +3486,7 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
dspfunc(avg_2tap_qpel, 1, 8);
#undef dspfunc
- c->avg_h264_chroma_pixels_tab[0]= avg_h264_chroma_mc8_mmx2;
+ c->avg_h264_chroma_pixels_tab[0]= avg_h264_chroma_mc8_mmx2_rnd;
c->avg_h264_chroma_pixels_tab[1]= avg_h264_chroma_mc4_mmx2;
c->avg_h264_chroma_pixels_tab[2]= avg_h264_chroma_mc2_mmx2;
c->put_h264_chroma_pixels_tab[2]= put_h264_chroma_mc2_mmx2;
@@ -3613,7 +3614,7 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
dspfunc(avg_2tap_qpel, 0, 16);
dspfunc(avg_2tap_qpel, 1, 8);
- c->avg_h264_chroma_pixels_tab[0]= avg_h264_chroma_mc8_3dnow;
+ c->avg_h264_chroma_pixels_tab[0]= avg_h264_chroma_mc8_3dnow_rnd;
c->avg_h264_chroma_pixels_tab[1]= avg_h264_chroma_mc4_3dnow;
}
diff --git a/libavcodec/i386/h264dsp_mmx.c b/libavcodec/i386/h264dsp_mmx.c
index 7d15b58..14511db 100644
--- a/libavcodec/i386/h264dsp_mmx.c
+++ b/libavcodec/i386/h264dsp_mmx.c
@@ -1378,6 +1378,16 @@ H264_MC(avg_, 16,mmx2)
#define H264_CHROMA_MC2_TMPL put_h264_chroma_mc2_mmx2
#define H264_CHROMA_MC8_MV0 put_pixels8_mmx
#include "dsputil_h264_template_mmx.c"
+
+static void put_h264_chroma_mc8_mmx_rnd(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
+{
+ put_h264_chroma_mc8_mmx(dst, src, stride, h, x, y, 1);
+}
+static void put_h264_chroma_mc8_mmx_nornd(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
+{
+ put_h264_chroma_mc8_mmx(dst, src, stride, h, x, y, 0);
+}
+
#undef H264_CHROMA_OP
#undef H264_CHROMA_OP4
#undef H264_CHROMA_MC8_TMPL
@@ -1393,6 +1403,10 @@ H264_MC(avg_, 16,mmx2)
#define H264_CHROMA_MC2_TMPL avg_h264_chroma_mc2_mmx2
#define H264_CHROMA_MC8_MV0 avg_pixels8_mmx2
#include "dsputil_h264_template_mmx.c"
+static void avg_h264_chroma_mc8_mmx2_rnd(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
+{
+ avg_h264_chroma_mc8_mmx2(dst, src, stride, h, x, y, 1);
+}
#undef H264_CHROMA_OP
#undef H264_CHROMA_OP4
#undef H264_CHROMA_MC8_TMPL
@@ -1407,6 +1421,10 @@ H264_MC(avg_, 16,mmx2)
#define H264_CHROMA_MC4_TMPL avg_h264_chroma_mc4_3dnow
#define H264_CHROMA_MC8_MV0 avg_pixels8_3dnow
#include "dsputil_h264_template_mmx.c"
+static void avg_h264_chroma_mc8_3dnow_rnd(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
+{
+ avg_h264_chroma_mc8_3dnow(dst, src, stride, h, x, y, 1);
+}
#undef H264_CHROMA_OP
#undef H264_CHROMA_OP4
#undef H264_CHROMA_MC8_TMPL
--
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