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/*
* Copyright (c) 2014 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 <arm_neon.h>
#include "vp8/encoder/block.h"
void vp8_subtract_b_neon(
BLOCK *be,
BLOCKD *bd,
int pitch) {
unsigned char *src_ptr, *predictor;
int src_stride;
int16_t *src_diff;
uint8x8_t d0u8, d1u8, d2u8, d3u8, d4u8, d5u8, d6u8, d7u8;
uint16x8_t q10u16, q11u16, q12u16, q13u16;
src_ptr = *be->base_src + be->src;
src_stride = be->src_stride;
predictor = bd->predictor;
d0u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d2u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d4u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d6u8 = vld1_u8(src_ptr);
d1u8 = vld1_u8(predictor);
predictor += pitch;
d3u8 = vld1_u8(predictor);
predictor += pitch;
d5u8 = vld1_u8(predictor);
predictor += pitch;
d7u8 = vld1_u8(predictor);
q10u16 = vsubl_u8(d0u8, d1u8);
q11u16 = vsubl_u8(d2u8, d3u8);
q12u16 = vsubl_u8(d4u8, d5u8);
q13u16 = vsubl_u8(d6u8, d7u8);
src_diff = be->src_diff;
vst1_u16((uint16_t *)src_diff, vget_low_u16(q10u16));
src_diff += pitch;
vst1_u16((uint16_t *)src_diff, vget_low_u16(q11u16));
src_diff += pitch;
vst1_u16((uint16_t *)src_diff, vget_low_u16(q12u16));
src_diff += pitch;
vst1_u16((uint16_t *)src_diff, vget_low_u16(q13u16));
return;
}
void vp8_subtract_mby_neon(
int16_t *diff,
unsigned char *src,
int src_stride,
unsigned char *pred,
int pred_stride) {
int i;
uint8x16_t q0u8, q1u8, q2u8, q3u8;
uint16x8_t q8u16, q9u16, q10u16, q11u16;
for (i = 0; i < 8; i++) { // subtract_mby_loop
q0u8 = vld1q_u8(src);
src += src_stride;
q2u8 = vld1q_u8(src);
src += src_stride;
q1u8 = vld1q_u8(pred);
pred += pred_stride;
q3u8 = vld1q_u8(pred);
pred += pred_stride;
q8u16 = vsubl_u8(vget_low_u8(q0u8), vget_low_u8(q1u8));
q9u16 = vsubl_u8(vget_high_u8(q0u8), vget_high_u8(q1u8));
q10u16 = vsubl_u8(vget_low_u8(q2u8), vget_low_u8(q3u8));
q11u16 = vsubl_u8(vget_high_u8(q2u8), vget_high_u8(q3u8));
vst1q_u16((uint16_t *)diff, q8u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q9u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q10u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q11u16);
diff += 8;
}
return;
}
void vp8_subtract_mbuv_neon(
int16_t *diff,
unsigned char *usrc,
unsigned char *vsrc,
int src_stride,
unsigned char *upred,
unsigned char *vpred,
int pred_stride) {
int i, j;
unsigned char *src_ptr, *pred_ptr;
uint8x8_t d0u8, d1u8, d2u8, d3u8, d4u8, d5u8, d6u8, d7u8;
uint16x8_t q8u16, q9u16, q10u16, q11u16;
diff += 256;
for (i = 0; i < 2; i++) {
if (i == 0) {
src_ptr = usrc;
pred_ptr = upred;
} else if (i == 1) {
src_ptr = vsrc;
pred_ptr = vpred;
}
for (j = 0; j < 2; j++) {
d0u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d1u8 = vld1_u8(pred_ptr);
pred_ptr += pred_stride;
d2u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d3u8 = vld1_u8(pred_ptr);
pred_ptr += pred_stride;
d4u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d5u8 = vld1_u8(pred_ptr);
pred_ptr += pred_stride;
d6u8 = vld1_u8(src_ptr);
src_ptr += src_stride;
d7u8 = vld1_u8(pred_ptr);
pred_ptr += pred_stride;
q8u16 = vsubl_u8(d0u8, d1u8);
q9u16 = vsubl_u8(d2u8, d3u8);
q10u16 = vsubl_u8(d4u8, d5u8);
q11u16 = vsubl_u8(d6u8, d7u8);
vst1q_u16((uint16_t *)diff, q8u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q9u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q10u16);
diff += 8;
vst1q_u16((uint16_t *)diff, q11u16);
diff += 8;
}
}
return;
}
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