ref: 69384f4fadf73cb6f2427f91134c9a54a5267140
parent: 4681197a58b3b532e37929563002d5a0485bf29d
author: hkuang <hkuang@google.com>
date: Mon Aug 26 08:39:12 EDT 2013
Add neon optimize vp9_short_idct4x4_1_add. Change-Id: I6ecb5c4a1a472feb8e84e9f3352b536d5e28a4a5
--- /dev/null
+++ b/vp9/common/arm/neon/vp9_short_idct4x4_1_add_neon.asm
@@ -1,0 +1,68 @@
+;
+; Copyright (c) 2013 The WebM project authors. All Rights Reserved.
+;
+; Use of this source code is governed by a BSD-style license and patent
+; grant that can be found in the LICENSE file in the root of the source
+; tree. All contributing project authors may be found in the AUTHORS
+; file in the root of the source tree.
+;
+
+
+ EXPORT |vp9_short_idct4x4_1_add_neon|
+ ARM
+ REQUIRE8
+ PRESERVE8
+
+ AREA ||.text||, CODE, READONLY, ALIGN=2
+
+;void vp9_short_idct4x4_1_add_neon(int16_t *input, uint8_t *dest,
+; int dest_stride)
+;
+; r0 int16_t input
+; r1 uint8_t *dest
+; r2 int dest_stride)
+
+|vp9_short_idct4x4_1_add_neon| PROC
+ ldrsh r0, [r0]
+
+ ; generate cospi_16_64 = 11585
+ mov r12, #0x2d00
+ add r12, #0x41
+
+ ; out = dct_const_round_shift(input[0] * cospi_16_64)
+ mul r0, r0, r12 ; input[0] * cospi_16_64
+ add r0, r0, #0x2000 ; +(1 << ((DCT_CONST_BITS) - 1))
+ asr r0, r0, #14 ; >> DCT_CONST_BITS
+
+ ; out = dct_const_round_shift(out * cospi_16_64)
+ mul r0, r0, r12 ; out * cospi_16_64
+ mov r12, r1 ; save dest
+ add r0, r0, #0x2000 ; +(1 << ((DCT_CONST_BITS) - 1))
+ asr r0, r0, #14 ; >> DCT_CONST_BITS
+
+ ; a1 = ROUND_POWER_OF_TWO(out, 4)
+ add r0, r0, #8 ; + (1 <<((4) - 1))
+ asr r0, r0, #4 ; >> 4
+
+ vdup.s16 q0, r0 ; duplicate a1
+
+ vld1.32 {d2[0]}, [r1], r2+ vld1.32 {d2[1]}, [r1], r2+ vld1.32 {d4[0]}, [r1], r2+ vld1.32 {d4[1]}, [r1]+
+ vaddw.u8 q8, q0, d2 ; dest[x] + a1
+ vaddw.u8 q9, q0, d4
+
+ vqmovun.s16 d6, q8 ; clip_pixel
+ vqmovun.s16 d7, q9
+
+ vst1.32 {d6[0]}, [r12], r2+ vst1.32 {d6[1]}, [r12], r2+ vst1.32 {d7[0]}, [r12], r2+ vst1.32 {d7[1]}, [r12]+
+ bx lr
+ ENDP ; |vp9_short_idct4x4_1_add_neon|
+
+ END
--- a/vp9/common/vp9_rtcd_defs.sh
+++ b/vp9/common/vp9_rtcd_defs.sh
@@ -295,7 +295,7 @@
# dct
#
prototype void vp9_short_idct4x4_1_add "int16_t *input, uint8_t *dest, int dest_stride"
-specialize vp9_short_idct4x4_1_add sse2
+specialize vp9_short_idct4x4_1_add sse2 neon
prototype void vp9_short_idct4x4_add "int16_t *input, uint8_t *dest, int dest_stride"
specialize vp9_short_idct4x4_add sse2 neon
--- a/vp9/vp9_common.mk
+++ b/vp9/vp9_common.mk
@@ -96,6 +96,7 @@
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_convolve8_avg_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_loopfilter_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_dc_only_idct_add_neon$(ASM)
+VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct4x4_1_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct4x4_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct8x8_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct16x16_add_neon$(ASM)
--
⑨