ref: 97826df96b86176d8cd23d398922349950853300
parent: a1d8918fd13e61753f7f420351cd7b9a2d6cc175
author: hkuang <hkuang@google.com>
date: Fri Jan 17 11:25:07 EST 2014
Add tm_predictor_8x8 neon implementation. Change-Id: I76c2720546b737cb63018a8ab6a3ff62a291786d
--- a/vp9/common/arm/neon/vp9_reconintra_neon.asm
+++ b/vp9/common/arm/neon/vp9_reconintra_neon.asm
@@ -17,6 +17,7 @@
EXPORT |vp9_h_predictor_16x16_neon|
EXPORT |vp9_h_predictor_32x32_neon|
EXPORT |vp9_tm_predictor_4x4_neon|
+ EXPORT |vp9_tm_predictor_8x8_neon|
ARM
REQUIRE8
PRESERVE8
@@ -328,8 +329,78 @@
vqshrun.s16 d1, q2, #0
vst1.32 {d0[0]}, [r0], r1 vst1.32 {d1[0]}, [r0], r1-
bx lr
ENDP ; |vp9_tm_predictor_4x4_neon|
+
+;void vp9_tm_predictor_8x8_neon (uint8_t *dst, ptrdiff_t y_stride,
+; const uint8_t *above,
+; const uint8_t *left)
+; r0 uint8_t *dst
+; r1 ptrdiff_t y_stride
+; r2 const uint8_t *above
+; r3 const uint8_t *left
+
+|vp9_tm_predictor_8x8_neon| PROC
+ ; Load ytop_left = above[-1];
+ sub r12, r2, #1
+ ldrb r12, [r12]
+ vdup.u8 d0, r12
+
+ ; Load above 8 pixels
+ vld1.64 {d2}, [r2]+
+ ; Compute above - ytop_left
+ vsubl.u8 q3, d2, d0
+
+ ; Load left row by row and compute left + (above - ytop_left)
+ ; 1st row and 2nd row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1+ vst1.64 {d1}, [r0], r1+
+ ; 3rd row and 4th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1+ vst1.64 {d1}, [r0], r1+
+ ; 5th row and 6th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1+ vst1.64 {d1}, [r0], r1+
+ ; 7rd row and 8th row
+ ldrb r12, [r3], #1
+ ldrb r2, [r3], #1
+ vdup.u16 q1, r12
+ vdup.u16 q2, r2
+ vadd.s16 q1, q1, q3
+ vadd.s16 q2, q2, q3
+ vqshrun.s16 d0, q1, #0
+ vqshrun.s16 d1, q2, #0
+ vst1.64 {d0}, [r0], r1+ vst1.64 {d1}, [r0], r1+ bx lr
+ ENDP ; |vp9_tm_predictor_8x8_neon|
END
--- a/vp9/common/vp9_rtcd_defs.sh
+++ b/vp9/common/vp9_rtcd_defs.sh
@@ -96,7 +96,7 @@
specialize vp9_v_predictor_8x8 $sse_x86inc neon
prototype void vp9_tm_predictor_8x8 "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left"
-specialize vp9_tm_predictor_8x8 $sse2_x86inc dspr2
+specialize vp9_tm_predictor_8x8 $sse2_x86inc neon dspr2
prototype void vp9_dc_predictor_8x8 "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left"
specialize vp9_dc_predictor_8x8 $sse_x86inc dspr2
--
⑨