8013aaa10b
Add vp8_shortwalsh4x4_neon.c - vp8_short_walsh4x4_neon Change-Id: Ica5f584be608c9e636f62db14f563757e94be09b Signed-off-by: James Yu <james.yu@linaro.org>
119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
/*
|
|
* 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>
|
|
|
|
void vp8_short_walsh4x4_neon(
|
|
int16_t *input,
|
|
int16_t *output,
|
|
int pitch) {
|
|
uint16x4_t d16u16;
|
|
int16x8_t q0s16, q1s16;
|
|
int16x4_t dEmptys16, d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
|
|
int32x4_t qEmptys32, q0s32, q1s32, q2s32, q3s32, q8s32;
|
|
int32x4_t q9s32, q10s32, q11s32, q15s32;
|
|
uint32x4_t q8u32, q9u32, q10u32, q11u32;
|
|
int16x4x2_t v2tmp0, v2tmp1;
|
|
int32x2x2_t v2tmp2, v2tmp3;
|
|
|
|
dEmptys16 = vdup_n_s16(0);
|
|
qEmptys32 = vdupq_n_s32(0);
|
|
q15s32 = vdupq_n_s32(3);
|
|
|
|
d0s16 = vld1_s16(input);
|
|
input += pitch/2;
|
|
d1s16 = vld1_s16(input);
|
|
input += pitch/2;
|
|
d2s16 = vld1_s16(input);
|
|
input += pitch/2;
|
|
d3s16 = vld1_s16(input);
|
|
|
|
v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d0s16),
|
|
vreinterpret_s32_s16(d2s16));
|
|
v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d1s16),
|
|
vreinterpret_s32_s16(d3s16));
|
|
v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[0]), // d0
|
|
vreinterpret_s16_s32(v2tmp3.val[0])); // d1
|
|
v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp2.val[1]), // d2
|
|
vreinterpret_s16_s32(v2tmp3.val[1])); // d3
|
|
|
|
d4s16 = vadd_s16(v2tmp0.val[0], v2tmp1.val[0]);
|
|
d5s16 = vadd_s16(v2tmp0.val[1], v2tmp1.val[1]);
|
|
d6s16 = vsub_s16(v2tmp0.val[1], v2tmp1.val[1]);
|
|
d7s16 = vsub_s16(v2tmp0.val[0], v2tmp1.val[0]);
|
|
|
|
d4s16 = vshl_n_s16(d4s16, 2);
|
|
d5s16 = vshl_n_s16(d5s16, 2);
|
|
d6s16 = vshl_n_s16(d6s16, 2);
|
|
d7s16 = vshl_n_s16(d7s16, 2);
|
|
|
|
d16u16 = vceq_s16(d4s16, dEmptys16);
|
|
d16u16 = vmvn_u16(d16u16);
|
|
|
|
d0s16 = vadd_s16(d4s16, d5s16);
|
|
d3s16 = vsub_s16(d4s16, d5s16);
|
|
d1s16 = vadd_s16(d7s16, d6s16);
|
|
d2s16 = vsub_s16(d7s16, d6s16);
|
|
|
|
d0s16 = vsub_s16(d0s16, vreinterpret_s16_u16(d16u16));
|
|
|
|
// Second for-loop
|
|
v2tmp2 = vtrn_s32(vreinterpret_s32_s16(d1s16),
|
|
vreinterpret_s32_s16(d3s16));
|
|
v2tmp3 = vtrn_s32(vreinterpret_s32_s16(d0s16),
|
|
vreinterpret_s32_s16(d2s16));
|
|
v2tmp0 = vtrn_s16(vreinterpret_s16_s32(v2tmp3.val[1]), // d2
|
|
vreinterpret_s16_s32(v2tmp2.val[1])); // d3
|
|
v2tmp1 = vtrn_s16(vreinterpret_s16_s32(v2tmp3.val[0]), // d0
|
|
vreinterpret_s16_s32(v2tmp2.val[0])); // d1
|
|
|
|
q8s32 = vaddl_s16(v2tmp1.val[0], v2tmp0.val[0]);
|
|
q9s32 = vaddl_s16(v2tmp1.val[1], v2tmp0.val[1]);
|
|
q10s32 = vsubl_s16(v2tmp1.val[1], v2tmp0.val[1]);
|
|
q11s32 = vsubl_s16(v2tmp1.val[0], v2tmp0.val[0]);
|
|
|
|
q0s32 = vaddq_s32(q8s32, q9s32);
|
|
q1s32 = vaddq_s32(q11s32, q10s32);
|
|
q2s32 = vsubq_s32(q11s32, q10s32);
|
|
q3s32 = vsubq_s32(q8s32, q9s32);
|
|
|
|
q8u32 = vcltq_s32(q0s32, qEmptys32);
|
|
q9u32 = vcltq_s32(q1s32, qEmptys32);
|
|
q10u32 = vcltq_s32(q2s32, qEmptys32);
|
|
q11u32 = vcltq_s32(q3s32, qEmptys32);
|
|
|
|
q8s32 = vreinterpretq_s32_u32(q8u32);
|
|
q9s32 = vreinterpretq_s32_u32(q9u32);
|
|
q10s32 = vreinterpretq_s32_u32(q10u32);
|
|
q11s32 = vreinterpretq_s32_u32(q11u32);
|
|
|
|
q0s32 = vsubq_s32(q0s32, q8s32);
|
|
q1s32 = vsubq_s32(q1s32, q9s32);
|
|
q2s32 = vsubq_s32(q2s32, q10s32);
|
|
q3s32 = vsubq_s32(q3s32, q11s32);
|
|
|
|
q8s32 = vaddq_s32(q0s32, q15s32);
|
|
q9s32 = vaddq_s32(q1s32, q15s32);
|
|
q10s32 = vaddq_s32(q2s32, q15s32);
|
|
q11s32 = vaddq_s32(q3s32, q15s32);
|
|
|
|
d0s16 = vshrn_n_s32(q8s32, 3);
|
|
d1s16 = vshrn_n_s32(q9s32, 3);
|
|
d2s16 = vshrn_n_s32(q10s32, 3);
|
|
d3s16 = vshrn_n_s32(q11s32, 3);
|
|
|
|
q0s16 = vcombine_s16(d0s16, d1s16);
|
|
q1s16 = vcombine_s16(d2s16, d3s16);
|
|
|
|
vst1q_s16(output, q0s16);
|
|
vst1q_s16(output + 8, q1s16);
|
|
return;
|
|
}
|