ref: 67aa6c8c23bc6ca90cfde756015f0aae61fe20f7
dir: /vpx_dsp/ppc/sad_vsx.c/
/*
* Copyright (c) 2017 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdlib.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/ppc/types_vsx.h"
#include "vpx/vpx_integer.h"
#include "vpx_ports/mem.h"
#define PROCESS16(offset) \
v_a = vec_vsx_ld(offset, a); \
v_b = vec_vsx_ld(offset, b); \
v_abs = vec_absd(v_a, v_b); \
v_sad = vec_sum4s(v_abs, v_sad);
#define SAD8(height) \
unsigned int vpx_sad8x##height##_vsx(const uint8_t *a, int a_stride, \
const uint8_t *b, int b_stride) { \
int y = 0; \
uint8x16_t v_a, v_b, v_abs; \
uint32x4_t v_sad = vec_zeros_u32; \
\
do { \
PROCESS16(0) \
\
a += a_stride; \
b += b_stride; \
y++; \
} while (y < height); \
\
return v_sad[1] + v_sad[0]; \
}
#define SAD16(height) \
unsigned int vpx_sad16x##height##_vsx(const uint8_t *a, int a_stride, \
const uint8_t *b, int b_stride) { \
int y = 0; \
uint8x16_t v_a, v_b, v_abs; \
uint32x4_t v_sad = vec_zeros_u32; \
\
do { \
PROCESS16(0); \
\
a += a_stride; \
b += b_stride; \
y++; \
} while (y < height); \
\
return v_sad[3] + v_sad[2] + v_sad[1] + v_sad[0]; \
}
#define SAD32(height) \
unsigned int vpx_sad32x##height##_vsx(const uint8_t *a, int a_stride, \
const uint8_t *b, int b_stride) { \
int y = 0; \
uint8x16_t v_a, v_b, v_abs; \
uint32x4_t v_sad = vec_zeros_u32; \
\
do { \
PROCESS16(0); \
PROCESS16(16); \
\
a += a_stride; \
b += b_stride; \
y++; \
} while (y < height); \
\
return v_sad[3] + v_sad[2] + v_sad[1] + v_sad[0]; \
}
#define SAD64(height) \
unsigned int vpx_sad64x##height##_vsx(const uint8_t *a, int a_stride, \
const uint8_t *b, int b_stride) { \
int y = 0; \
uint8x16_t v_a, v_b, v_abs; \
uint32x4_t v_sad = vec_zeros_u32; \
\
do { \
PROCESS16(0); \
PROCESS16(16); \
PROCESS16(32); \
PROCESS16(48); \
\
a += a_stride; \
b += b_stride; \
y++; \
} while (y < height); \
\
return v_sad[3] + v_sad[2] + v_sad[1] + v_sad[0]; \
}
SAD8(4);
SAD8(8);
SAD8(16);
SAD16(8);
SAD16(16);
SAD16(32);
SAD32(16);
SAD32(32);
SAD32(64);
SAD64(32);
SAD64(64);
#define SAD16AVG(height) \
unsigned int vpx_sad16x##height##_avg_vsx( \
const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, \
const uint8_t *second_pred) { \
DECLARE_ALIGNED(16, uint8_t, comp_pred[16 * (height)]); \
vpx_comp_avg_pred_vsx(comp_pred, second_pred, 16, height, ref, \
ref_stride); \
\
return vpx_sad16x##height##_vsx(src, src_stride, comp_pred, 16); \
}
#define SAD32AVG(height) \
unsigned int vpx_sad32x##height##_avg_vsx( \
const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, \
const uint8_t *second_pred) { \
DECLARE_ALIGNED(32, uint8_t, comp_pred[32 * (height)]); \
vpx_comp_avg_pred_vsx(comp_pred, second_pred, 32, height, ref, \
ref_stride); \
\
return vpx_sad32x##height##_vsx(src, src_stride, comp_pred, 32); \
}
#define SAD64AVG(height) \
unsigned int vpx_sad64x##height##_avg_vsx( \
const uint8_t *src, int src_stride, const uint8_t *ref, int ref_stride, \
const uint8_t *second_pred) { \
DECLARE_ALIGNED(64, uint8_t, comp_pred[64 * (height)]); \
vpx_comp_avg_pred_vsx(comp_pred, second_pred, 64, height, ref, \
ref_stride); \
return vpx_sad64x##height##_vsx(src, src_stride, comp_pred, 64); \
}
SAD16AVG(8);
SAD16AVG(16);
SAD16AVG(32);
SAD32AVG(16);
SAD32AVG(32);
SAD32AVG(64);
SAD64AVG(32);
SAD64AVG(64);
#define PROCESS16_4D(offset, ref, v_h, v_l) \
v_b = vec_vsx_ld(offset, ref); \
v_bh = unpack_to_s16_h(v_b); \
v_bl = unpack_to_s16_l(v_b); \
v_subh = vec_sub(v_h, v_bh); \
v_subl = vec_sub(v_l, v_bl); \
v_absh = vec_abs(v_subh); \
v_absl = vec_abs(v_subl); \
v_sad = vec_sum4s(v_absh, v_sad); \
v_sad = vec_sum4s(v_absl, v_sad);
#define UNPACK_SRC(offset, srcv_h, srcv_l) \
v_a = vec_vsx_ld(offset, src); \
srcv_h = unpack_to_s16_h(v_a); \
srcv_l = unpack_to_s16_l(v_a);
#define SAD16_4D(height) \
void vpx_sad16x##height##x4d_vsx(const uint8_t *src, int src_stride, \
const uint8_t *const ref_array[], \
int ref_stride, uint32_t *sad_array) { \
int i; \
int y; \
unsigned int sad[4]; \
uint8x16_t v_a, v_b; \
int16x8_t v_ah, v_al, v_bh, v_bl, v_absh, v_absl, v_subh, v_subl; \
\
for (i = 0; i < 4; i++) sad_array[i] = 0; \
\
for (y = 0; y < height; y++) { \
UNPACK_SRC(y *src_stride, v_ah, v_al); \
for (i = 0; i < 4; i++) { \
int32x4_t v_sad = vec_splat_s32(0); \
PROCESS16_4D(y *ref_stride, ref_array[i], v_ah, v_al); \
\
vec_vsx_st((uint32x4_t)v_sad, 0, sad); \
sad_array[i] += (sad[3] + sad[2] + sad[1] + sad[0]); \
} \
} \
}
#define SAD32_4D(height) \
void vpx_sad32x##height##x4d_vsx(const uint8_t *src, int src_stride, \
const uint8_t *const ref_array[], \
int ref_stride, uint32_t *sad_array) { \
int i; \
int y; \
unsigned int sad[4]; \
uint8x16_t v_a, v_b; \
int16x8_t v_ah1, v_al1, v_ah2, v_al2, v_bh, v_bl; \
int16x8_t v_absh, v_absl, v_subh, v_subl; \
\
for (i = 0; i < 4; i++) sad_array[i] = 0; \
\
for (y = 0; y < height; y++) { \
UNPACK_SRC(y *src_stride, v_ah1, v_al1); \
UNPACK_SRC(y *src_stride + 16, v_ah2, v_al2); \
for (i = 0; i < 4; i++) { \
int32x4_t v_sad = vec_splat_s32(0); \
PROCESS16_4D(y *ref_stride, ref_array[i], v_ah1, v_al1); \
PROCESS16_4D(y *ref_stride + 16, ref_array[i], v_ah2, v_al2); \
\
vec_vsx_st((uint32x4_t)v_sad, 0, sad); \
sad_array[i] += (sad[3] + sad[2] + sad[1] + sad[0]); \
} \
} \
}
#define SAD64_4D(height) \
void vpx_sad64x##height##x4d_vsx(const uint8_t *src, int src_stride, \
const uint8_t *const ref_array[], \
int ref_stride, uint32_t *sad_array) { \
int i; \
int y; \
unsigned int sad[4]; \
uint8x16_t v_a, v_b; \
int16x8_t v_ah1, v_al1, v_ah2, v_al2, v_bh, v_bl; \
int16x8_t v_ah3, v_al3, v_ah4, v_al4; \
int16x8_t v_absh, v_absl, v_subh, v_subl; \
\
for (i = 0; i < 4; i++) sad_array[i] = 0; \
\
for (y = 0; y < height; y++) { \
UNPACK_SRC(y *src_stride, v_ah1, v_al1); \
UNPACK_SRC(y *src_stride + 16, v_ah2, v_al2); \
UNPACK_SRC(y *src_stride + 32, v_ah3, v_al3); \
UNPACK_SRC(y *src_stride + 48, v_ah4, v_al4); \
for (i = 0; i < 4; i++) { \
int32x4_t v_sad = vec_splat_s32(0); \
PROCESS16_4D(y *ref_stride, ref_array[i], v_ah1, v_al1); \
PROCESS16_4D(y *ref_stride + 16, ref_array[i], v_ah2, v_al2); \
PROCESS16_4D(y *ref_stride + 32, ref_array[i], v_ah3, v_al3); \
PROCESS16_4D(y *ref_stride + 48, ref_array[i], v_ah4, v_al4); \
\
vec_vsx_st((uint32x4_t)v_sad, 0, sad); \
sad_array[i] += (sad[3] + sad[2] + sad[1] + sad[0]); \
} \
} \
}
SAD16_4D(8);
SAD16_4D(16);
SAD16_4D(32);
SAD32_4D(16);
SAD32_4D(32);
SAD32_4D(64);
SAD64_4D(32);
SAD64_4D(64);