VP8 for ARMv8 by using NEON intrinsics 15
Add idct_dequant_0_2x_neon.c - idct_dequant_0_2x_neon Change-Id: I8e129172ef1b2517cf72ff267788921f1a792586 Signed-off-by: James Yu <james.yu@linaro.org>
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James Yu
Gerrit Code Review
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;
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license and patent
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; grant that can be found in the LICENSE file in the root of the source
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; tree. All contributing project authors may be found in the AUTHORS
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; file in the root of the source tree.
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;
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EXPORT |idct_dequant_0_2x_neon|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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;void idct_dequant_0_2x_neon(short *q, short dq,
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; unsigned char *dst, int stride);
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; r0 *q
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; r1 dq
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; r2 *dst
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; r3 stride
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|idct_dequant_0_2x_neon| PROC
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push {r4, r5}
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vpush {d8-d15}
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add r12, r2, #4
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vld1.32 {d2[0]}, [r2], r3
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vld1.32 {d8[0]}, [r12], r3
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vld1.32 {d2[1]}, [r2], r3
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vld1.32 {d8[1]}, [r12], r3
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vld1.32 {d4[0]}, [r2], r3
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vld1.32 {d10[0]}, [r12], r3
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vld1.32 {d4[1]}, [r2], r3
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vld1.32 {d10[1]}, [r12], r3
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ldrh r12, [r0] ; lo q
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ldrh r4, [r0, #32] ; hi q
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mov r5, #0
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strh r5, [r0]
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strh r5, [r0, #32]
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sxth r12, r12 ; lo
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mul r0, r12, r1
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add r0, r0, #4
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asr r0, r0, #3
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vdup.16 q0, r0
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sxth r4, r4 ; hi
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mul r0, r4, r1
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add r0, r0, #4
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asr r0, r0, #3
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vdup.16 q3, r0
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vaddw.u8 q1, q0, d2 ; lo
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vaddw.u8 q2, q0, d4
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vaddw.u8 q4, q3, d8 ; hi
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vaddw.u8 q5, q3, d10
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sub r2, r2, r3, lsl #2 ; dst - 4*stride
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add r0, r2, #4
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vqmovun.s16 d2, q1 ; lo
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vqmovun.s16 d4, q2
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vqmovun.s16 d8, q4 ; hi
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vqmovun.s16 d10, q5
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vst1.32 {d2[0]}, [r2], r3 ; lo
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vst1.32 {d8[0]}, [r0], r3 ; hi
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vst1.32 {d2[1]}, [r2], r3
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vst1.32 {d8[1]}, [r0], r3
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vst1.32 {d4[0]}, [r2], r3
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vst1.32 {d10[0]}, [r0], r3
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vst1.32 {d4[1]}, [r2]
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vst1.32 {d10[1]}, [r0]
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vpop {d8-d15}
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pop {r4, r5}
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bx lr
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ENDP ; |idct_dequant_0_2x_neon|
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END
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62
vp8/common/arm/neon/idct_dequant_0_2x_neon.c
Normal file
62
vp8/common/arm/neon/idct_dequant_0_2x_neon.c
Normal file
@ -0,0 +1,62 @@
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/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <arm_neon.h>
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void idct_dequant_0_2x_neon(
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int16_t *q,
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int16_t dq,
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unsigned char *dst,
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int stride) {
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unsigned char *dst0;
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int i, a0, a1;
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int16x8x2_t q2Add;
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int32x2_t d2s32, d4s32;
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uint8x8_t d2u8, d4u8;
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uint16x8_t q1u16, q2u16;
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a0 = ((q[0] * dq) + 4) >> 3;
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a1 = ((q[16] * dq) + 4) >> 3;
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q[0] = q[16] = 0;
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q2Add.val[0] = vdupq_n_s16((int16_t)a0);
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q2Add.val[1] = vdupq_n_s16((int16_t)a1);
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for (i = 0; i < 2; i++, dst += 4) {
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dst0 = dst;
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d2s32 = vld1_lane_s32((const int32_t *)dst0, d2s32, 0);
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dst0 += stride;
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d2s32 = vld1_lane_s32((const int32_t *)dst0, d2s32, 1);
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dst0 += stride;
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d4s32 = vld1_lane_s32((const int32_t *)dst0, d4s32, 0);
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dst0 += stride;
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d4s32 = vld1_lane_s32((const int32_t *)dst0, d4s32, 1);
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q1u16 = vaddw_u8(vreinterpretq_u16_s16(q2Add.val[i]),
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vreinterpret_u8_s32(d2s32));
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q2u16 = vaddw_u8(vreinterpretq_u16_s16(q2Add.val[i]),
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vreinterpret_u8_s32(d4s32));
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d2u8 = vqmovun_s16(vreinterpretq_s16_u16(q1u16));
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d4u8 = vqmovun_s16(vreinterpretq_s16_u16(q2u16));
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d2s32 = vreinterpret_s32_u8(d2u8);
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d4s32 = vreinterpret_s32_u8(d4u8);
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dst0 = dst;
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vst1_lane_s32((int32_t *)dst0, d2s32, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d2s32, 1);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d4s32, 0);
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dst0 += stride;
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vst1_lane_s32((int32_t *)dst0, d4s32, 1);
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}
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return;
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}
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@ -160,7 +160,6 @@ VP8_COMMON_SRCS-$(HAVE_MEDIA) += common/arm/armv6/vp8_variance_halfpixvar16x16_
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# common (neon)
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/buildintrapredictorsmby_neon$(ASM)
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/idct_dequant_0_2x_neon$(ASM)
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/idct_blk_neon.c
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/variance_neon$(ASM)
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp8_subpixelvariance8x8_neon$(ASM)
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@ -182,6 +181,7 @@ VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/mbloopfilter_neon.c
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/sad_neon.c
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/shortidct4x4llm_neon.c
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/sixtappredict_neon.c
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VP8_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/idct_dequant_0_2x_neon.c
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$(eval $(call rtcd_h_template,vp8_rtcd,vp8/common/rtcd_defs.pl))
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