ref: a6fdfda44c0c637b0c99bfa5e583bf691c58bca7
dir: /vpx_dsp/mips/subtract_msa.c/
/*
* Copyright (c) 2015 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 "./vpx_dsp_rtcd.h"
#include "vpx_dsp/mips/macros_msa.h"
static void sub_blk_4x4_msa(const uint8_t *src_ptr, int32_t src_stride,
const uint8_t *pred_ptr, int32_t pred_stride,
int16_t *diff_ptr, int32_t diff_stride) {
uint32_t src0, src1, src2, src3;
uint32_t pred0, pred1, pred2, pred3;
v16i8 src = { 0 };
v16i8 pred = { 0 };
v16u8 src_l0, src_l1;
v8i16 diff0, diff1;
LW4(src_ptr, src_stride, src0, src1, src2, src3);
LW4(pred_ptr, pred_stride, pred0, pred1, pred2, pred3);
INSERT_W4_SB(src0, src1, src2, src3, src);
INSERT_W4_SB(pred0, pred1, pred2, pred3, pred);
ILVRL_B2_UB(src, pred, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST8x4_UB(diff0, diff1, diff_ptr, (2 * diff_stride));
}
static void sub_blk_8x8_msa(const uint8_t *src_ptr, int32_t src_stride,
const uint8_t *pred_ptr, int32_t pred_stride,
int16_t *diff_ptr, int32_t diff_stride) {
uint32_t loop_cnt;
uint64_t src0, src1, pred0, pred1;
v16i8 src = { 0 };
v16i8 pred = { 0 };
v16u8 src_l0, src_l1;
v8i16 diff0, diff1;
for (loop_cnt = 4; loop_cnt--;) {
LD2(src_ptr, src_stride, src0, src1);
src_ptr += (2 * src_stride);
LD2(pred_ptr, pred_stride, pred0, pred1);
pred_ptr += (2 * pred_stride);
INSERT_D2_SB(src0, src1, src);
INSERT_D2_SB(pred0, pred1, pred);
ILVRL_B2_UB(src, pred, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff_ptr, diff_stride);
diff_ptr += (2 * diff_stride);
}
}
static void sub_blk_16x16_msa(const uint8_t *src, int32_t src_stride,
const uint8_t *pred, int32_t pred_stride,
int16_t *diff, int32_t diff_stride) {
int8_t count;
v16i8 src0, src1, src2, src3, src4, src5, src6, src7;
v16i8 pred0, pred1, pred2, pred3, pred4, pred5, pred6, pred7;
v16u8 src_l0, src_l1;
v8i16 diff0, diff1;
for (count = 2; count--;) {
LD_SB8(src, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
src += (8 * src_stride);
LD_SB8(pred, pred_stride, pred0, pred1, pred2, pred3, pred4, pred5, pred6,
pred7);
pred += (8 * pred_stride);
ILVRL_B2_UB(src0, pred0, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src1, pred1, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src2, pred2, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src3, pred3, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src4, pred4, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src5, pred5, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src6, pred6, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
ILVRL_B2_UB(src7, pred7, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
diff += diff_stride;
}
}
static void sub_blk_32x32_msa(const uint8_t *src, int32_t src_stride,
const uint8_t *pred, int32_t pred_stride,
int16_t *diff, int32_t diff_stride) {
uint32_t loop_cnt;
v16i8 src0, src1, src2, src3, src4, src5, src6, src7;
v16i8 pred0, pred1, pred2, pred3, pred4, pred5, pred6, pred7;
v16u8 src_l0, src_l1;
v8i16 diff0, diff1;
for (loop_cnt = 8; loop_cnt--;) {
LD_SB2(src, 16, src0, src1);
src += src_stride;
LD_SB2(src, 16, src2, src3);
src += src_stride;
LD_SB2(src, 16, src4, src5);
src += src_stride;
LD_SB2(src, 16, src6, src7);
src += src_stride;
LD_SB2(pred, 16, pred0, pred1);
pred += pred_stride;
LD_SB2(pred, 16, pred2, pred3);
pred += pred_stride;
LD_SB2(pred, 16, pred4, pred5);
pred += pred_stride;
LD_SB2(pred, 16, pred6, pred7);
pred += pred_stride;
ILVRL_B2_UB(src0, pred0, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src1, pred1, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
diff += diff_stride;
ILVRL_B2_UB(src2, pred2, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src3, pred3, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
diff += diff_stride;
ILVRL_B2_UB(src4, pred4, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src5, pred5, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
diff += diff_stride;
ILVRL_B2_UB(src6, pred6, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src7, pred7, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
diff += diff_stride;
}
}
static void sub_blk_64x64_msa(const uint8_t *src, int32_t src_stride,
const uint8_t *pred, int32_t pred_stride,
int16_t *diff, int32_t diff_stride) {
uint32_t loop_cnt;
v16i8 src0, src1, src2, src3, src4, src5, src6, src7;
v16i8 pred0, pred1, pred2, pred3, pred4, pred5, pred6, pred7;
v16u8 src_l0, src_l1;
v8i16 diff0, diff1;
for (loop_cnt = 32; loop_cnt--;) {
LD_SB4(src, 16, src0, src1, src2, src3);
src += src_stride;
LD_SB4(src, 16, src4, src5, src6, src7);
src += src_stride;
LD_SB4(pred, 16, pred0, pred1, pred2, pred3);
pred += pred_stride;
LD_SB4(pred, 16, pred4, pred5, pred6, pred7);
pred += pred_stride;
ILVRL_B2_UB(src0, pred0, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src1, pred1, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
ILVRL_B2_UB(src2, pred2, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 32, 8);
ILVRL_B2_UB(src3, pred3, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 48, 8);
diff += diff_stride;
ILVRL_B2_UB(src4, pred4, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff, 8);
ILVRL_B2_UB(src5, pred5, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 16, 8);
ILVRL_B2_UB(src6, pred6, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 32, 8);
ILVRL_B2_UB(src7, pred7, src_l0, src_l1);
HSUB_UB2_SH(src_l0, src_l1, diff0, diff1);
ST_SH2(diff0, diff1, diff + 48, 8);
diff += diff_stride;
}
}
void vpx_subtract_block_msa(int32_t rows, int32_t cols, int16_t *diff_ptr,
ptrdiff_t diff_stride, const uint8_t *src_ptr,
ptrdiff_t src_stride, const uint8_t *pred_ptr,
ptrdiff_t pred_stride) {
if (rows == cols) {
switch (rows) {
case 4:
sub_blk_4x4_msa(src_ptr, src_stride, pred_ptr, pred_stride, diff_ptr,
diff_stride);
break;
case 8:
sub_blk_8x8_msa(src_ptr, src_stride, pred_ptr, pred_stride, diff_ptr,
diff_stride);
break;
case 16:
sub_blk_16x16_msa(src_ptr, src_stride, pred_ptr, pred_stride, diff_ptr,
diff_stride);
break;
case 32:
sub_blk_32x32_msa(src_ptr, src_stride, pred_ptr, pred_stride, diff_ptr,
diff_stride);
break;
case 64:
sub_blk_64x64_msa(src_ptr, src_stride, pred_ptr, pred_stride, diff_ptr,
diff_stride);
break;
default:
vpx_subtract_block_c(rows, cols, diff_ptr, diff_stride, src_ptr,
src_stride, pred_ptr, pred_stride);
break;
}
} else {
vpx_subtract_block_c(rows, cols, diff_ptr, diff_stride, src_ptr, src_stride,
pred_ptr, pred_stride);
}
}