207 lines
7.9 KiB
C
207 lines
7.9 KiB
C
/*
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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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#include "./vpx_config.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_dsp/arm/mem_neon.h"
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// TODO(johannkoenig): combine with avg_neon.h version.
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static INLINE uint32_t horizontal_add_16x8(const uint16x8_t vec_16x8) {
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const uint32x4_t a = vpaddlq_u16(vec_16x8);
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const uint64x2_t b = vpaddlq_u32(a);
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const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
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vreinterpret_u32_u64(vget_high_u64(b)));
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return vget_lane_u32(c, 0);
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}
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uint32_t vpx_sad4x4_neon(const uint8_t *src_ptr, int src_stride,
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const uint8_t *ref_ptr, int ref_stride) {
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const uint8x16_t src_u8 = load_unaligned_u8q(src_ptr, src_stride);
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const uint8x16_t ref_u8 = load_unaligned_u8q(ref_ptr, ref_stride);
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uint16x8_t abs = vabdl_u8(vget_low_u8(src_u8), vget_low_u8(ref_u8));
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abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(ref_u8));
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad4x8_neon(const uint8_t *src_ptr, int src_stride,
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const uint8_t *ref_ptr, int ref_stride) {
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int i;
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uint16x8_t abs = vdupq_n_u16(0);
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for (i = 0; i < 8; i += 4) {
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const uint8x16_t src_u8 = load_unaligned_u8q(src_ptr, src_stride);
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const uint8x16_t ref_u8 = load_unaligned_u8q(ref_ptr, ref_stride);
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src_ptr += 4 * src_stride;
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ref_ptr += 4 * ref_stride;
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abs = vabal_u8(abs, vget_low_u8(src_u8), vget_low_u8(ref_u8));
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abs = vabal_u8(abs, vget_high_u8(src_u8), vget_high_u8(ref_u8));
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}
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return horizontal_add_16x8(abs);
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}
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static INLINE uint16x8_t sad8x(const uint8_t *a, int a_stride, const uint8_t *b,
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int b_stride, const int height) {
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int i;
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uint16x8_t abs = vdupq_n_u16(0);
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for (i = 0; i < height; ++i) {
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const uint8x8_t a_u8 = vld1_u8(a);
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const uint8x8_t b_u8 = vld1_u8(b);
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a += a_stride;
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b += b_stride;
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abs = vabal_u8(abs, a_u8, b_u8);
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}
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return abs;
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}
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uint32_t vpx_sad8x4_neon(const uint8_t *src, int src_stride, const uint8_t *ref,
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int ref_stride) {
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const uint16x8_t abs = sad8x(src, src_stride, ref, ref_stride, 4);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad8x8_neon(const uint8_t *src, int src_stride, const uint8_t *ref,
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int ref_stride) {
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const uint16x8_t abs = sad8x(src, src_stride, ref, ref_stride, 8);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad8x16_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad8x(src, src_stride, ref, ref_stride, 16);
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return horizontal_add_16x8(abs);
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}
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static INLINE uint16x8_t sad16x(const uint8_t *a, int a_stride,
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const uint8_t *b, int b_stride,
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const int height) {
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int i;
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uint16x8_t abs = vdupq_n_u16(0);
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for (i = 0; i < height; ++i) {
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const uint8x16_t a_u8 = vld1q_u8(a);
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const uint8x16_t b_u8 = vld1q_u8(b);
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a += a_stride;
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b += b_stride;
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abs = vabal_u8(abs, vget_low_u8(a_u8), vget_low_u8(b_u8));
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abs = vabal_u8(abs, vget_high_u8(a_u8), vget_high_u8(b_u8));
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}
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return abs;
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}
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uint32_t vpx_sad16x8_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad16x(src, src_stride, ref, ref_stride, 8);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad16x16_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad16x(src, src_stride, ref, ref_stride, 16);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad16x32_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad16x(src, src_stride, ref, ref_stride, 32);
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return horizontal_add_16x8(abs);
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}
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static INLINE uint16x8_t sad32x(const uint8_t *a, int a_stride,
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const uint8_t *b, int b_stride,
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const int height) {
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int i;
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uint16x8_t abs = vdupq_n_u16(0);
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for (i = 0; i < height; ++i) {
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const uint8x16_t a_lo = vld1q_u8(a);
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const uint8x16_t a_hi = vld1q_u8(a + 16);
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const uint8x16_t b_lo = vld1q_u8(b);
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const uint8x16_t b_hi = vld1q_u8(b + 16);
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a += a_stride;
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b += b_stride;
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abs = vabal_u8(abs, vget_low_u8(a_lo), vget_low_u8(b_lo));
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abs = vabal_u8(abs, vget_high_u8(a_lo), vget_high_u8(b_lo));
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abs = vabal_u8(abs, vget_low_u8(a_hi), vget_low_u8(b_hi));
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abs = vabal_u8(abs, vget_high_u8(a_hi), vget_high_u8(b_hi));
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}
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return abs;
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}
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uint32_t vpx_sad32x16_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad32x(src, src_stride, ref, ref_stride, 16);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad32x32_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad32x(src, src_stride, ref, ref_stride, 32);
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return horizontal_add_16x8(abs);
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}
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uint32_t vpx_sad32x64_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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const uint16x8_t abs = sad32x(src, src_stride, ref, ref_stride, 64);
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return horizontal_add_16x8(abs);
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}
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static INLINE unsigned int horizontal_long_add_16x8(const uint16x8_t vec_lo,
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const uint16x8_t vec_hi) {
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const uint32x4_t vec_l_lo =
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vaddl_u16(vget_low_u16(vec_lo), vget_high_u16(vec_lo));
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const uint32x4_t vec_l_hi =
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vaddl_u16(vget_low_u16(vec_hi), vget_high_u16(vec_hi));
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const uint32x4_t a = vaddq_u32(vec_l_lo, vec_l_hi);
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const uint64x2_t b = vpaddlq_u32(a);
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const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
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vreinterpret_u32_u64(vget_high_u64(b)));
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return vget_lane_u32(c, 0);
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}
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unsigned int vpx_sad64x64_neon(const uint8_t *src, int src_stride,
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const uint8_t *ref, int ref_stride) {
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int i;
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uint16x8_t vec_accum_lo = vdupq_n_u16(0);
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uint16x8_t vec_accum_hi = vdupq_n_u16(0);
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for (i = 0; i < 64; ++i) {
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const uint8x16_t vec_src_00 = vld1q_u8(src);
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const uint8x16_t vec_src_16 = vld1q_u8(src + 16);
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const uint8x16_t vec_src_32 = vld1q_u8(src + 32);
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const uint8x16_t vec_src_48 = vld1q_u8(src + 48);
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const uint8x16_t vec_ref_00 = vld1q_u8(ref);
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const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16);
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const uint8x16_t vec_ref_32 = vld1q_u8(ref + 32);
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const uint8x16_t vec_ref_48 = vld1q_u8(ref + 48);
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src += src_stride;
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ref += ref_stride;
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vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00),
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vget_low_u8(vec_ref_00));
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vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00),
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vget_high_u8(vec_ref_00));
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vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16),
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vget_low_u8(vec_ref_16));
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vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16),
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vget_high_u8(vec_ref_16));
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vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_32),
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vget_low_u8(vec_ref_32));
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vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_32),
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vget_high_u8(vec_ref_32));
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vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_48),
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vget_low_u8(vec_ref_48));
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vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_48),
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vget_high_u8(vec_ref_48));
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}
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return horizontal_long_add_16x8(vec_accum_lo, vec_accum_hi);
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}
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