[x265] [PATCH 7 of 9] asm:intra pred planar8 sse2 high bit

[dtyx265 at gmail.com]

# HG changeset patch
# User David T Yuen <dtyx265 at gmail.com>
# Date 1425599015 28800
# Node ID 2505da40f1a6f63266b98d5d6d81f51602c61a12
# Parent  352b5ea85101e8da0c4a15d5a7c2a303b28e02da
asm:intra pred planar8 sse2 high bit

This replaces c code for systems using ssse3 to sse2 processors
The code is backported from intrapred planar8 sse4 high bit

./test/TestBench --testbench intrapred | grep intra_planar_8x8
intra_planar_8x8	3.50x 	 902.49   	 3158.04

diff -r 352b5ea85101 -r 2505da40f1a6 source/common/x86/asm-primitives.cpp
--- a/source/common/x86/asm-primitives.cpp	Thu Mar 05 15:33:28 2015 -0800
+++ b/source/common/x86/asm-primitives.cpp	Thu Mar 05 15:43:35 2015 -0800
@@ -874,6 +874,7 @@
         p.cu[BLOCK_32x32].intra_pred[DC_IDX] = x265_intra_pred_dc32_sse2;
 
         p.cu[BLOCK_4x4].intra_pred[PLANAR_IDX] = x265_intra_pred_planar4_sse2;
+        p.cu[BLOCK_8x8].intra_pred[PLANAR_IDX] = x265_intra_pred_planar8_sse2;
 
         p.cu[BLOCK_4x4].sse_ss = x265_pixel_ssd_ss_4x4_mmx2;
         ALL_LUMA_CU(sse_ss, pixel_ssd_ss, sse2);
diff -r 352b5ea85101 -r 2505da40f1a6 source/common/x86/intrapred16.asm
--- a/source/common/x86/intrapred16.asm	Thu Mar 05 15:33:28 2015 -0800
+++ b/source/common/x86/intrapred16.asm	Thu Mar 05 15:43:35 2015 -0800
@@ -441,6 +441,57 @@
 %endrep
     RET
 
+;---------------------------------------------------------------------------------------
+; void intra_pred_planar(pixel* dst, intptr_t dstStride, pixel*srcPix, int, int filter)
+;---------------------------------------------------------------------------------------
+INIT_XMM sse2
+cglobal intra_pred_planar8, 3,3,5
+    movu            m1, [r2 + 2]
+    movu            m2, [r2 + 34]
+
+    movd            m3, [r2 + 18]           ; topRight   = above[8];
+    movd            m4, [r2 + 50]           ; bottomLeft = left[8];
+
+    pshuflw         m3, m3, 0
+    pshuflw         m4, m4, 0
+    pshufd          m3, m3, 0               ; v_topRight
+    pshufd          m4, m4, 0               ; v_bottomLeft
+
+    pmullw          m3, [multiL]            ; (x + 1) * topRight
+    pmullw          m0, m1, [pw_planar8_1]  ; (blkSize - 1 - y) * above[x]
+    paddw           m3, [pw_8]
+    paddw           m3, m4
+    paddw           m3, m0
+    psubw           m4, m1
+
+%macro INTRA_PRED_PLANAR_8 1
+%if (%1 < 4)
+    pshuflw         m1, m2, 0x55 * %1
+    pshufd          m1, m1, 0
+%else
+    pshufhw         m1, m2, 0x55 * (%1 - 4)
+    pshufd          m1, m1, 0xAA
+%endif
+    pmullw          m1, [pw_planar8_0]
+    paddw           m1, m3
+    psraw           m1, 4
+    movu            [r0], m1
+%if (%1 < 7)
+    paddw           m3, m4
+    lea             r0, [r0 + r1 * 2]
+%endif
+%endmacro
+
+    INTRA_PRED_PLANAR_8 0
+    INTRA_PRED_PLANAR_8 1
+    INTRA_PRED_PLANAR_8 2
+    INTRA_PRED_PLANAR_8 3
+    INTRA_PRED_PLANAR_8 4
+    INTRA_PRED_PLANAR_8 5
+    INTRA_PRED_PLANAR_8 6
+    INTRA_PRED_PLANAR_8 7
+    RET
+
 ;-----------------------------------------------------------------------------------
 ; void intra_pred_dc(pixel* dst, intptr_t dstStride, pixel* above, int, int filter)
 ;-----------------------------------------------------------------------------------