[FFmpeg-devel] [PATCH 1/4] avcodec/x86: add put_pixels16_x2_sse2

[Michael Niedermayer]

about 1% faster P frame motion compensation for matrixbench on i7

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
---
 libavcodec/x86/dsputil_mmx.c |    4 ++++
 libavcodec/x86/hpeldsp.asm   |   31 ++++++++++++++++++++++++++++++-
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/libavcodec/x86/dsputil_mmx.c b/libavcodec/x86/dsputil_mmx.c
index 2e8300a..29d87a1 100644
--- a/libavcodec/x86/dsputil_mmx.c
+++ b/libavcodec/x86/dsputil_mmx.c
@@ -1523,6 +1523,8 @@ static void gmc_mmx(uint8_t *dst, uint8_t *src,
 
 void ff_put_pixels16_sse2(uint8_t *block, const uint8_t *pixels,
                           int line_size, int h);
+void ff_put_pixels16_x2_sse2(uint8_t *block, const uint8_t *pixels,
+                              int line_size, int h);
 void ff_avg_pixels16_sse2(uint8_t *block, const uint8_t *pixels,
                           int line_size, int h);
 
@@ -2034,6 +2036,8 @@ static void dsputil_init_sse2(DSPContext *c, AVCodecContext *avctx,
         // these functions are slower than mmx on AMD, but faster on Intel
         if (!high_bit_depth) {
             c->put_pixels_tab[0][0]        = ff_put_pixels16_sse2;
+            c->put_pixels_tab[0][1]        = ff_put_pixels16_x2_sse2;
+
             c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_sse2;
             c->avg_pixels_tab[0][0]        = ff_avg_pixels16_sse2;
         }
diff --git a/libavcodec/x86/hpeldsp.asm b/libavcodec/x86/hpeldsp.asm
index 7f0c285..81b6901 100644
--- a/libavcodec/x86/hpeldsp.asm
+++ b/libavcodec/x86/hpeldsp.asm
@@ -2,7 +2,7 @@
 ;*
 ;* Copyright (c) 2000-2001 Fabrice Bellard <fabrice at bellard.org>
 ;* Copyright (c)      Nick Kurshev <nickols_k at mail.ru>
-;* Copyright (c) 2002 Michael Niedermayer <michaelni at gmx.at>
+;* Copyright (c) 2002-2013 Michael Niedermayer <michaelni at gmx.at>
 ;* Copyright (c) 2002 Zdenek Kabelac <kabi at informatics.muni.cz>
 ;* Copyright (c) 2013 Daniel Kang
 ;*
@@ -513,3 +513,32 @@ cglobal avg_pixels16, 4,5,4
     lea          r0, [r0+r2*4]
     jnz       .loop
     REP_RET
+
+; put_pixels16_x2(uint8_t *block, const uint8_t *pixels, int line_size, int h)
+cglobal put_pixels16_x2, 4, 5, 4
+    movsxdifnidn r2, r2d
+    lea          r4, [r2*2]
+.loop:
+    movu         m0, [r1]
+    movu         m1, [r1+r2]
+    movu         m2, [r1+1]
+    movu         m3, [r1+r2+1]
+    pavgb        m0, m2
+    pavgb        m1, m3
+    mova       [r0], m0
+    mova    [r0+r2], m1
+    add          r1, r4
+    add          r0, r4
+    movu         m0, [r1]
+    movu         m1, [r1+r2]
+    movu         m2, [r1+1]
+    movu         m3, [r1+r2+1]
+    pavgb        m0, m2
+    pavgb        m1, m3
+    add          r1, r4
+    mova       [r0], m0
+    mova    [r0+r2], m1
+    add          r0, r4
+    sub         r3d, 4
+    jne .loop
+    REP_RET
-- 
1.7.9.5