ref: a6462990e6cd42bfe1a02dd6c452dddde0902f28
parent: abdefeaa89a0908327518e5ca75c935c66b2e1aa
parent: 6b16f63332b593c82dddd7d1ceb18b46ffe8b381
author: hkuang <hkuang@google.com>
date: Thu Nov 7 09:42:29 EST 2013
Merge "Add back vp9_short_idct32x32_1_add_neon which is deleted in cleanup I63df79a13cf62aa2c9360a7a26933c100f9ebda3."
--- /dev/null
+++ b/vp9/common/arm/neon/vp9_short_idct32x32_1_add_neon.asm
@@ -1,0 +1,144 @@
+;
+; 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_idct32x32_1_add_neon|
+ ARM
+ REQUIRE8
+ PRESERVE8
+
+ AREA ||.text||, CODE, READONLY, ALIGN=2
+
+ ;TODO(hkuang): put the following macros in a seperate
+ ;file so other idct function could also use them.
+ MACRO
+ LD_16x8 $src, $stride
+ vld1.8 {q8}, [$src], $stride+ vld1.8 {q9}, [$src], $stride+ vld1.8 {q10}, [$src], $stride+ vld1.8 {q11}, [$src], $stride+ vld1.8 {q12}, [$src], $stride+ vld1.8 {q13}, [$src], $stride+ vld1.8 {q14}, [$src], $stride+ vld1.8 {q15}, [$src], $stride+ MEND
+
+ MACRO
+ ADD_DIFF_16x8 $diff
+ vqadd.u8 q8, q8, $diff
+ vqadd.u8 q9, q9, $diff
+ vqadd.u8 q10, q10, $diff
+ vqadd.u8 q11, q11, $diff
+ vqadd.u8 q12, q12, $diff
+ vqadd.u8 q13, q13, $diff
+ vqadd.u8 q14, q14, $diff
+ vqadd.u8 q15, q15, $diff
+ MEND
+
+ MACRO
+ SUB_DIFF_16x8 $diff
+ vqsub.u8 q8, q8, $diff
+ vqsub.u8 q9, q9, $diff
+ vqsub.u8 q10, q10, $diff
+ vqsub.u8 q11, q11, $diff
+ vqsub.u8 q12, q12, $diff
+ vqsub.u8 q13, q13, $diff
+ vqsub.u8 q14, q14, $diff
+ vqsub.u8 q15, q15, $diff
+ MEND
+
+ MACRO
+ ST_16x8 $dst, $stride
+ vst1.8 {q8}, [$dst], $stride+ vst1.8 {q9}, [$dst], $stride+ vst1.8 {q10},[$dst], $stride+ vst1.8 {q11},[$dst], $stride+ vst1.8 {q12},[$dst], $stride+ vst1.8 {q13},[$dst], $stride+ vst1.8 {q14},[$dst], $stride+ vst1.8 {q15},[$dst], $stride+ MEND
+
+;void vp9_idct32x32_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_idct32x32_1_add_neon| PROC
+ push {lr}+ pld [r1]
+ add r3, r1, #16 ; r3 dest + 16 for second loop
+ 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, 6)
+ add r0, r0, #32 ; + (1 <<((6) - 1))
+ asrs r0, r0, #6 ; >> 6
+ bge diff_positive_32_32
+
+diff_negative_32_32
+ neg r0, r0
+ usat r0, #8, r0
+ vdup.u8 q0, r0
+ mov r0, #4
+
+diff_negative_32_32_loop
+ sub r0, #1
+ LD_16x8 r1, r2
+ SUB_DIFF_16x8 q0
+ ST_16x8 r12, r2
+
+ LD_16x8 r1, r2
+ SUB_DIFF_16x8 q0
+ ST_16x8 r12, r2
+ cmp r0, #2
+ moveq r1, r3
+ moveq r12, r3
+ cmp r0, #0
+ bne diff_negative_32_32_loop
+ pop {r3,pc}+
+diff_positive_32_32
+ usat r0, #8, r0
+ vdup.u8 q0, r0
+ mov r0, #4
+
+diff_positive_32_32_loop
+ sub r0, #1
+ LD_16x8 r1, r2
+ ADD_DIFF_16x8 q0
+ ST_16x8 r12, r2
+
+ LD_16x8 r1, r2
+ ADD_DIFF_16x8 q0
+ ST_16x8 r12, r2
+ cmp r0, #2
+ moveq r1, r3
+ moveq r12, r3
+ cmp r0, #0
+ bne diff_positive_32_32_loop
+ pop {pc}+
+ ENDP ; |vp9_idct32x32_1_add_neon|
+ END
--- a/vp9/common/vp9_rtcd_defs.sh
+++ b/vp9/common/vp9_rtcd_defs.sh
@@ -299,7 +299,7 @@
specialize vp9_idct32x32_34_add sse2
prototype void vp9_idct32x32_1_add "const int16_t *input, uint8_t *dest, int dest_stride"
-specialize vp9_idct32x32_1_add sse2 dspr2
+specialize vp9_idct32x32_1_add sse2 neon dspr2
prototype void vp9_iht4x4_16_add "const int16_t *input, uint8_t *dest, int dest_stride, int tx_type"
specialize vp9_iht4x4_16_add sse2 neon dspr2
--- a/vp9/vp9_common.mk
+++ b/vp9/vp9_common.mk
@@ -123,6 +123,7 @@
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_1_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct16x16_add_neon$(ASM)
+VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct32x32_1_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_idct32x32_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_iht4x4_add_neon$(ASM)
VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_short_iht8x8_add_neon$(ASM)