ref: c58f01724cd5f0887e9d0c23396f9f03f78e18d3
dir: /vpx_dsp/arm/highbd_idct8x8_add_neon.c/
/*
* Copyright (c) 2016 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 "./vpx_dsp_rtcd.h"
#include "vpx_dsp/arm/idct_neon.h"
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/inv_txfm.h"
static INLINE void highbd_idct8x8_1_add_pos_kernel(uint16_t **dest,
const int stride,
const int16x8_t res,
const int16x8_t max) {
const uint16x8_t a = vld1q_u16(*dest);
const int16x8_t b = vaddq_s16(res, vreinterpretq_s16_u16(a));
const int16x8_t c = vminq_s16(b, max);
vst1q_u16(*dest, vreinterpretq_u16_s16(c));
*dest += stride;
}
static INLINE void highbd_idct8x8_1_add_neg_kernel(uint16_t **dest,
const int stride,
const int16x8_t res) {
const uint16x8_t a = vld1q_u16(*dest);
const int16x8_t b = vaddq_s16(res, vreinterpretq_s16_u16(a));
const uint16x8_t c = vqshluq_n_s16(b, 0);
vst1q_u16(*dest, c);
*dest += stride;
}
void vpx_highbd_idct8x8_1_add_neon(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
const tran_low_t out0 = HIGHBD_WRAPLOW(
dct_const_round_shift(input[0] * (tran_high_t)cospi_16_64), bd);
const tran_low_t out1 = HIGHBD_WRAPLOW(
dct_const_round_shift(out0 * (tran_high_t)cospi_16_64), bd);
const int16_t a1 = ROUND_POWER_OF_TWO(out1, 5);
const int16x8_t dc = vdupq_n_s16(a1);
if (a1 >= 0) {
const int16x8_t max = vdupq_n_s16((1 << bd) - 1);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
highbd_idct8x8_1_add_pos_kernel(&dest, stride, dc, max);
} else {
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
highbd_idct8x8_1_add_neg_kernel(&dest, stride, dc);
}
}
static INLINE void idct8x8_12_half1d_bd10(
const int32x4_t cospis0, const int32x4_t cospis1, int32x4_t *const io0,
int32x4_t *const io1, int32x4_t *const io2, int32x4_t *const io3,
int32x4_t *const io4, int32x4_t *const io5, int32x4_t *const io6,
int32x4_t *const io7) {
int32x4_t step1[8], step2[8];
transpose_s32_4x4(io0, io1, io2, io3);
// stage 1
step1[4] = vmulq_lane_s32(*io1, vget_high_s32(cospis1), 1);
step1[5] = vmulq_lane_s32(*io3, vget_high_s32(cospis1), 0);
step1[6] = vmulq_lane_s32(*io3, vget_low_s32(cospis1), 1);
step1[7] = vmulq_lane_s32(*io1, vget_low_s32(cospis1), 0);
step1[4] = vrshrq_n_s32(step1[4], DCT_CONST_BITS);
step1[5] = vrshrq_n_s32(step1[5], DCT_CONST_BITS);
step1[6] = vrshrq_n_s32(step1[6], DCT_CONST_BITS);
step1[7] = vrshrq_n_s32(step1[7], DCT_CONST_BITS);
// stage 2
step2[1] = vmulq_lane_s32(*io0, vget_high_s32(cospis0), 0);
step2[2] = vmulq_lane_s32(*io2, vget_high_s32(cospis0), 1);
step2[3] = vmulq_lane_s32(*io2, vget_low_s32(cospis0), 1);
step2[1] = vrshrq_n_s32(step2[1], DCT_CONST_BITS);
step2[2] = vrshrq_n_s32(step2[2], DCT_CONST_BITS);
step2[3] = vrshrq_n_s32(step2[3], DCT_CONST_BITS);
step2[4] = vaddq_s32(step1[4], step1[5]);
step2[5] = vsubq_s32(step1[4], step1[5]);
step2[6] = vsubq_s32(step1[7], step1[6]);
step2[7] = vaddq_s32(step1[7], step1[6]);
// stage 3
step1[0] = vaddq_s32(step2[1], step2[3]);
step1[1] = vaddq_s32(step2[1], step2[2]);
step1[2] = vsubq_s32(step2[1], step2[2]);
step1[3] = vsubq_s32(step2[1], step2[3]);
step1[6] = vmulq_lane_s32(step2[6], vget_high_s32(cospis0), 0);
step1[5] = vmlsq_lane_s32(step1[6], step2[5], vget_high_s32(cospis0), 0);
step1[6] = vmlaq_lane_s32(step1[6], step2[5], vget_high_s32(cospis0), 0);
step1[5] = vrshrq_n_s32(step1[5], DCT_CONST_BITS);
step1[6] = vrshrq_n_s32(step1[6], DCT_CONST_BITS);
// stage 4
*io0 = vaddq_s32(step1[0], step2[7]);
*io1 = vaddq_s32(step1[1], step1[6]);
*io2 = vaddq_s32(step1[2], step1[5]);
*io3 = vaddq_s32(step1[3], step2[4]);
*io4 = vsubq_s32(step1[3], step2[4]);
*io5 = vsubq_s32(step1[2], step1[5]);
*io6 = vsubq_s32(step1[1], step1[6]);
*io7 = vsubq_s32(step1[0], step2[7]);
}
static INLINE void idct8x8_12_half1d_bd12(
const int32x4_t cospis0, const int32x4_t cospis1, int32x4_t *const io0,
int32x4_t *const io1, int32x4_t *const io2, int32x4_t *const io3,
int32x4_t *const io4, int32x4_t *const io5, int32x4_t *const io6,
int32x4_t *const io7) {
int32x2_t input_1l, input_1h, input_3l, input_3h;
int32x2_t step1l[2], step1h[2];
int32x4_t step1[8], step2[8];
int64x2_t t64[8];
int32x2_t t32[8];
transpose_s32_4x4(io0, io1, io2, io3);
// stage 1
input_1l = vget_low_s32(*io1);
input_1h = vget_high_s32(*io1);
input_3l = vget_low_s32(*io3);
input_3h = vget_high_s32(*io3);
step1l[0] = vget_low_s32(*io0);
step1h[0] = vget_high_s32(*io0);
step1l[1] = vget_low_s32(*io2);
step1h[1] = vget_high_s32(*io2);
t64[0] = vmull_lane_s32(input_1l, vget_high_s32(cospis1), 1);
t64[1] = vmull_lane_s32(input_1h, vget_high_s32(cospis1), 1);
t64[2] = vmull_lane_s32(input_3l, vget_high_s32(cospis1), 0);
t64[3] = vmull_lane_s32(input_3h, vget_high_s32(cospis1), 0);
t64[4] = vmull_lane_s32(input_3l, vget_low_s32(cospis1), 1);
t64[5] = vmull_lane_s32(input_3h, vget_low_s32(cospis1), 1);
t64[6] = vmull_lane_s32(input_1l, vget_low_s32(cospis1), 0);
t64[7] = vmull_lane_s32(input_1h, vget_low_s32(cospis1), 0);
t32[0] = vrshrn_n_s64(t64[0], DCT_CONST_BITS);
t32[1] = vrshrn_n_s64(t64[1], DCT_CONST_BITS);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
t32[4] = vrshrn_n_s64(t64[4], DCT_CONST_BITS);
t32[5] = vrshrn_n_s64(t64[5], DCT_CONST_BITS);
t32[6] = vrshrn_n_s64(t64[6], DCT_CONST_BITS);
t32[7] = vrshrn_n_s64(t64[7], DCT_CONST_BITS);
step1[4] = vcombine_s32(t32[0], t32[1]);
step1[5] = vcombine_s32(t32[2], t32[3]);
step1[6] = vcombine_s32(t32[4], t32[5]);
step1[7] = vcombine_s32(t32[6], t32[7]);
// stage 2
t64[2] = vmull_lane_s32(step1l[0], vget_high_s32(cospis0), 0);
t64[3] = vmull_lane_s32(step1h[0], vget_high_s32(cospis0), 0);
t64[4] = vmull_lane_s32(step1l[1], vget_high_s32(cospis0), 1);
t64[5] = vmull_lane_s32(step1h[1], vget_high_s32(cospis0), 1);
t64[6] = vmull_lane_s32(step1l[1], vget_low_s32(cospis0), 1);
t64[7] = vmull_lane_s32(step1h[1], vget_low_s32(cospis0), 1);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
t32[4] = vrshrn_n_s64(t64[4], DCT_CONST_BITS);
t32[5] = vrshrn_n_s64(t64[5], DCT_CONST_BITS);
t32[6] = vrshrn_n_s64(t64[6], DCT_CONST_BITS);
t32[7] = vrshrn_n_s64(t64[7], DCT_CONST_BITS);
step2[1] = vcombine_s32(t32[2], t32[3]);
step2[2] = vcombine_s32(t32[4], t32[5]);
step2[3] = vcombine_s32(t32[6], t32[7]);
step2[4] = vaddq_s32(step1[4], step1[5]);
step2[5] = vsubq_s32(step1[4], step1[5]);
step2[6] = vsubq_s32(step1[7], step1[6]);
step2[7] = vaddq_s32(step1[7], step1[6]);
// stage 3
step1[0] = vaddq_s32(step2[1], step2[3]);
step1[1] = vaddq_s32(step2[1], step2[2]);
step1[2] = vsubq_s32(step2[1], step2[2]);
step1[3] = vsubq_s32(step2[1], step2[3]);
t64[2] = vmull_lane_s32(vget_low_s32(step2[6]), vget_high_s32(cospis0), 0);
t64[3] = vmull_lane_s32(vget_high_s32(step2[6]), vget_high_s32(cospis0), 0);
t64[0] =
vmlsl_lane_s32(t64[2], vget_low_s32(step2[5]), vget_high_s32(cospis0), 0);
t64[1] = vmlsl_lane_s32(t64[3], vget_high_s32(step2[5]),
vget_high_s32(cospis0), 0);
t64[2] =
vmlal_lane_s32(t64[2], vget_low_s32(step2[5]), vget_high_s32(cospis0), 0);
t64[3] = vmlal_lane_s32(t64[3], vget_high_s32(step2[5]),
vget_high_s32(cospis0), 0);
t32[0] = vrshrn_n_s64(t64[0], DCT_CONST_BITS);
t32[1] = vrshrn_n_s64(t64[1], DCT_CONST_BITS);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
step1[5] = vcombine_s32(t32[0], t32[1]);
step1[6] = vcombine_s32(t32[2], t32[3]);
// stage 4
*io0 = vaddq_s32(step1[0], step2[7]);
*io1 = vaddq_s32(step1[1], step1[6]);
*io2 = vaddq_s32(step1[2], step1[5]);
*io3 = vaddq_s32(step1[3], step2[4]);
*io4 = vsubq_s32(step1[3], step2[4]);
*io5 = vsubq_s32(step1[2], step1[5]);
*io6 = vsubq_s32(step1[1], step1[6]);
*io7 = vsubq_s32(step1[0], step2[7]);
}
static INLINE void highbd_add8x8(int16x8_t a0, int16x8_t a1, int16x8_t a2,
int16x8_t a3, int16x8_t a4, int16x8_t a5,
int16x8_t a6, int16x8_t a7, uint16_t *dest,
const int stride, const int bd) {
const int16x8_t max = vdupq_n_s16((1 << bd) - 1);
const uint16_t *dst = dest;
uint16x8_t d0, d1, d2, d3, d4, d5, d6, d7;
uint16x8_t d0_u16, d1_u16, d2_u16, d3_u16, d4_u16, d5_u16, d6_u16, d7_u16;
int16x8_t d0_s16, d1_s16, d2_s16, d3_s16, d4_s16, d5_s16, d6_s16, d7_s16;
d0 = vld1q_u16(dst);
dst += stride;
d1 = vld1q_u16(dst);
dst += stride;
d2 = vld1q_u16(dst);
dst += stride;
d3 = vld1q_u16(dst);
dst += stride;
d4 = vld1q_u16(dst);
dst += stride;
d5 = vld1q_u16(dst);
dst += stride;
d6 = vld1q_u16(dst);
dst += stride;
d7 = vld1q_u16(dst);
d0_s16 = vqaddq_s16(a0, vreinterpretq_s16_u16(d0));
d1_s16 = vqaddq_s16(a1, vreinterpretq_s16_u16(d1));
d2_s16 = vqaddq_s16(a2, vreinterpretq_s16_u16(d2));
d3_s16 = vqaddq_s16(a3, vreinterpretq_s16_u16(d3));
d4_s16 = vqaddq_s16(a4, vreinterpretq_s16_u16(d4));
d5_s16 = vqaddq_s16(a5, vreinterpretq_s16_u16(d5));
d6_s16 = vqaddq_s16(a6, vreinterpretq_s16_u16(d6));
d7_s16 = vqaddq_s16(a7, vreinterpretq_s16_u16(d7));
d0_s16 = vminq_s16(d0_s16, max);
d1_s16 = vminq_s16(d1_s16, max);
d2_s16 = vminq_s16(d2_s16, max);
d3_s16 = vminq_s16(d3_s16, max);
d4_s16 = vminq_s16(d4_s16, max);
d5_s16 = vminq_s16(d5_s16, max);
d6_s16 = vminq_s16(d6_s16, max);
d7_s16 = vminq_s16(d7_s16, max);
d0_u16 = vqshluq_n_s16(d0_s16, 0);
d1_u16 = vqshluq_n_s16(d1_s16, 0);
d2_u16 = vqshluq_n_s16(d2_s16, 0);
d3_u16 = vqshluq_n_s16(d3_s16, 0);
d4_u16 = vqshluq_n_s16(d4_s16, 0);
d5_u16 = vqshluq_n_s16(d5_s16, 0);
d6_u16 = vqshluq_n_s16(d6_s16, 0);
d7_u16 = vqshluq_n_s16(d7_s16, 0);
vst1q_u16(dest, d0_u16);
dest += stride;
vst1q_u16(dest, d1_u16);
dest += stride;
vst1q_u16(dest, d2_u16);
dest += stride;
vst1q_u16(dest, d3_u16);
dest += stride;
vst1q_u16(dest, d4_u16);
dest += stride;
vst1q_u16(dest, d5_u16);
dest += stride;
vst1q_u16(dest, d6_u16);
dest += stride;
vst1q_u16(dest, d7_u16);
}
void vpx_highbd_idct8x8_12_add_neon(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int32x4_t a0 = vld1q_s32(input);
int32x4_t a1 = vld1q_s32(input + 8);
int32x4_t a2 = vld1q_s32(input + 16);
int32x4_t a3 = vld1q_s32(input + 24);
int16x8_t c0, c1, c2, c3, c4, c5, c6, c7;
if (bd == 8) {
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x8_t cospisd = vaddq_s16(cospis, cospis);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospisd0 = vget_low_s16(cospisd); // doubled 0, 8, 16, 24
const int16x4_t cospisd1 = vget_high_s16(cospisd); // doubled 4, 12, 20, 28
int16x4_t b0 = vmovn_s32(a0);
int16x4_t b1 = vmovn_s32(a1);
int16x4_t b2 = vmovn_s32(a2);
int16x4_t b3 = vmovn_s32(a3);
int16x4_t b4, b5, b6, b7;
idct8x8_12_pass1_bd8(cospis0, cospisd0, cospisd1, &b0, &b1, &b2, &b3, &b4,
&b5, &b6, &b7);
idct8x8_12_pass2_bd8(cospis0, cospisd0, cospisd1, b0, b1, b2, b3, b4, b5,
b6, b7, &c0, &c1, &c2, &c3, &c4, &c5, &c6, &c7);
c0 = vrshrq_n_s16(c0, 5);
c1 = vrshrq_n_s16(c1, 5);
c2 = vrshrq_n_s16(c2, 5);
c3 = vrshrq_n_s16(c3, 5);
c4 = vrshrq_n_s16(c4, 5);
c5 = vrshrq_n_s16(c5, 5);
c6 = vrshrq_n_s16(c6, 5);
c7 = vrshrq_n_s16(c7, 5);
} else {
const int32x4_t cospis0 = vld1q_s32(kCospi32); // cospi 0, 8, 16, 24
const int32x4_t cospis1 = vld1q_s32(kCospi32 + 4); // cospi 4, 12, 20, 28
int32x4_t a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15;
if (bd == 10) {
idct8x8_12_half1d_bd10(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5,
&a6, &a7);
idct8x8_12_half1d_bd10(cospis0, cospis1, &a0, &a1, &a2, &a3, &a8, &a9,
&a10, &a11);
idct8x8_12_half1d_bd10(cospis0, cospis1, &a4, &a5, &a6, &a7, &a12, &a13,
&a14, &a15);
} else {
idct8x8_12_half1d_bd12(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5,
&a6, &a7);
idct8x8_12_half1d_bd12(cospis0, cospis1, &a0, &a1, &a2, &a3, &a8, &a9,
&a10, &a11);
idct8x8_12_half1d_bd12(cospis0, cospis1, &a4, &a5, &a6, &a7, &a12, &a13,
&a14, &a15);
}
c0 = vcombine_s16(vrshrn_n_s32(a0, 5), vrshrn_n_s32(a4, 5));
c1 = vcombine_s16(vrshrn_n_s32(a1, 5), vrshrn_n_s32(a5, 5));
c2 = vcombine_s16(vrshrn_n_s32(a2, 5), vrshrn_n_s32(a6, 5));
c3 = vcombine_s16(vrshrn_n_s32(a3, 5), vrshrn_n_s32(a7, 5));
c4 = vcombine_s16(vrshrn_n_s32(a8, 5), vrshrn_n_s32(a12, 5));
c5 = vcombine_s16(vrshrn_n_s32(a9, 5), vrshrn_n_s32(a13, 5));
c6 = vcombine_s16(vrshrn_n_s32(a10, 5), vrshrn_n_s32(a14, 5));
c7 = vcombine_s16(vrshrn_n_s32(a11, 5), vrshrn_n_s32(a15, 5));
}
highbd_add8x8(c0, c1, c2, c3, c4, c5, c6, c7, dest, stride, bd);
}
static INLINE void idct8x8_64_half1d_bd10(
const int32x4_t cospis0, const int32x4_t cospis1, int32x4_t *const io0,
int32x4_t *const io1, int32x4_t *const io2, int32x4_t *const io3,
int32x4_t *const io4, int32x4_t *const io5, int32x4_t *const io6,
int32x4_t *const io7) {
int32x4_t step1[8], step2[8];
transpose_s32_8x4(io0, io1, io2, io3, io4, io5, io6, io7);
// stage 1
step1[4] = vmulq_lane_s32(*io1, vget_high_s32(cospis1), 1);
step1[5] = vmulq_lane_s32(*io3, vget_high_s32(cospis1), 0);
step1[6] = vmulq_lane_s32(*io3, vget_low_s32(cospis1), 1);
step1[7] = vmulq_lane_s32(*io1, vget_low_s32(cospis1), 0);
step1[4] = vmlsq_lane_s32(step1[4], *io7, vget_low_s32(cospis1), 0);
step1[5] = vmlaq_lane_s32(step1[5], *io5, vget_low_s32(cospis1), 1);
step1[6] = vmlsq_lane_s32(step1[6], *io5, vget_high_s32(cospis1), 0);
step1[7] = vmlaq_lane_s32(step1[7], *io7, vget_high_s32(cospis1), 1);
step1[4] = vrshrq_n_s32(step1[4], DCT_CONST_BITS);
step1[5] = vrshrq_n_s32(step1[5], DCT_CONST_BITS);
step1[6] = vrshrq_n_s32(step1[6], DCT_CONST_BITS);
step1[7] = vrshrq_n_s32(step1[7], DCT_CONST_BITS);
// stage 2
step2[1] = vmulq_lane_s32(*io0, vget_high_s32(cospis0), 0);
step2[2] = vmulq_lane_s32(*io2, vget_high_s32(cospis0), 1);
step2[3] = vmulq_lane_s32(*io2, vget_low_s32(cospis0), 1);
step2[0] = vmlaq_lane_s32(step2[1], *io4, vget_high_s32(cospis0), 0);
step2[1] = vmlsq_lane_s32(step2[1], *io4, vget_high_s32(cospis0), 0);
step2[2] = vmlsq_lane_s32(step2[2], *io6, vget_low_s32(cospis0), 1);
step2[3] = vmlaq_lane_s32(step2[3], *io6, vget_high_s32(cospis0), 1);
step2[0] = vrshrq_n_s32(step2[0], DCT_CONST_BITS);
step2[1] = vrshrq_n_s32(step2[1], DCT_CONST_BITS);
step2[2] = vrshrq_n_s32(step2[2], DCT_CONST_BITS);
step2[3] = vrshrq_n_s32(step2[3], DCT_CONST_BITS);
step2[4] = vaddq_s32(step1[4], step1[5]);
step2[5] = vsubq_s32(step1[4], step1[5]);
step2[6] = vsubq_s32(step1[7], step1[6]);
step2[7] = vaddq_s32(step1[7], step1[6]);
// stage 3
step1[0] = vaddq_s32(step2[0], step2[3]);
step1[1] = vaddq_s32(step2[1], step2[2]);
step1[2] = vsubq_s32(step2[1], step2[2]);
step1[3] = vsubq_s32(step2[0], step2[3]);
step1[6] = vmulq_lane_s32(step2[6], vget_high_s32(cospis0), 0);
step1[5] = vmlsq_lane_s32(step1[6], step2[5], vget_high_s32(cospis0), 0);
step1[6] = vmlaq_lane_s32(step1[6], step2[5], vget_high_s32(cospis0), 0);
step1[5] = vrshrq_n_s32(step1[5], DCT_CONST_BITS);
step1[6] = vrshrq_n_s32(step1[6], DCT_CONST_BITS);
// stage 4
*io0 = vaddq_s32(step1[0], step2[7]);
*io1 = vaddq_s32(step1[1], step1[6]);
*io2 = vaddq_s32(step1[2], step1[5]);
*io3 = vaddq_s32(step1[3], step2[4]);
*io4 = vsubq_s32(step1[3], step2[4]);
*io5 = vsubq_s32(step1[2], step1[5]);
*io6 = vsubq_s32(step1[1], step1[6]);
*io7 = vsubq_s32(step1[0], step2[7]);
}
static INLINE void idct8x8_64_half1d_bd12(
const int32x4_t cospis0, const int32x4_t cospis1, int32x4_t *const io0,
int32x4_t *const io1, int32x4_t *const io2, int32x4_t *const io3,
int32x4_t *const io4, int32x4_t *const io5, int32x4_t *const io6,
int32x4_t *const io7) {
int32x2_t input_1l, input_1h, input_3l, input_3h, input_5l, input_5h,
input_7l, input_7h;
int32x2_t step1l[4], step1h[4];
int32x4_t step1[8], step2[8];
int64x2_t t64[8];
int32x2_t t32[8];
transpose_s32_8x4(io0, io1, io2, io3, io4, io5, io6, io7);
// stage 1
input_1l = vget_low_s32(*io1);
input_1h = vget_high_s32(*io1);
input_3l = vget_low_s32(*io3);
input_3h = vget_high_s32(*io3);
input_5l = vget_low_s32(*io5);
input_5h = vget_high_s32(*io5);
input_7l = vget_low_s32(*io7);
input_7h = vget_high_s32(*io7);
step1l[0] = vget_low_s32(*io0);
step1h[0] = vget_high_s32(*io0);
step1l[1] = vget_low_s32(*io2);
step1h[1] = vget_high_s32(*io2);
step1l[2] = vget_low_s32(*io4);
step1h[2] = vget_high_s32(*io4);
step1l[3] = vget_low_s32(*io6);
step1h[3] = vget_high_s32(*io6);
t64[0] = vmull_lane_s32(input_1l, vget_high_s32(cospis1), 1);
t64[1] = vmull_lane_s32(input_1h, vget_high_s32(cospis1), 1);
t64[2] = vmull_lane_s32(input_3l, vget_high_s32(cospis1), 0);
t64[3] = vmull_lane_s32(input_3h, vget_high_s32(cospis1), 0);
t64[4] = vmull_lane_s32(input_3l, vget_low_s32(cospis1), 1);
t64[5] = vmull_lane_s32(input_3h, vget_low_s32(cospis1), 1);
t64[6] = vmull_lane_s32(input_1l, vget_low_s32(cospis1), 0);
t64[7] = vmull_lane_s32(input_1h, vget_low_s32(cospis1), 0);
t64[0] = vmlsl_lane_s32(t64[0], input_7l, vget_low_s32(cospis1), 0);
t64[1] = vmlsl_lane_s32(t64[1], input_7h, vget_low_s32(cospis1), 0);
t64[2] = vmlal_lane_s32(t64[2], input_5l, vget_low_s32(cospis1), 1);
t64[3] = vmlal_lane_s32(t64[3], input_5h, vget_low_s32(cospis1), 1);
t64[4] = vmlsl_lane_s32(t64[4], input_5l, vget_high_s32(cospis1), 0);
t64[5] = vmlsl_lane_s32(t64[5], input_5h, vget_high_s32(cospis1), 0);
t64[6] = vmlal_lane_s32(t64[6], input_7l, vget_high_s32(cospis1), 1);
t64[7] = vmlal_lane_s32(t64[7], input_7h, vget_high_s32(cospis1), 1);
t32[0] = vrshrn_n_s64(t64[0], DCT_CONST_BITS);
t32[1] = vrshrn_n_s64(t64[1], DCT_CONST_BITS);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
t32[4] = vrshrn_n_s64(t64[4], DCT_CONST_BITS);
t32[5] = vrshrn_n_s64(t64[5], DCT_CONST_BITS);
t32[6] = vrshrn_n_s64(t64[6], DCT_CONST_BITS);
t32[7] = vrshrn_n_s64(t64[7], DCT_CONST_BITS);
step1[4] = vcombine_s32(t32[0], t32[1]);
step1[5] = vcombine_s32(t32[2], t32[3]);
step1[6] = vcombine_s32(t32[4], t32[5]);
step1[7] = vcombine_s32(t32[6], t32[7]);
// stage 2
t64[2] = vmull_lane_s32(step1l[0], vget_high_s32(cospis0), 0);
t64[3] = vmull_lane_s32(step1h[0], vget_high_s32(cospis0), 0);
t64[4] = vmull_lane_s32(step1l[1], vget_high_s32(cospis0), 1);
t64[5] = vmull_lane_s32(step1h[1], vget_high_s32(cospis0), 1);
t64[6] = vmull_lane_s32(step1l[1], vget_low_s32(cospis0), 1);
t64[7] = vmull_lane_s32(step1h[1], vget_low_s32(cospis0), 1);
t64[0] = vmlal_lane_s32(t64[2], step1l[2], vget_high_s32(cospis0), 0);
t64[1] = vmlal_lane_s32(t64[3], step1h[2], vget_high_s32(cospis0), 0);
t64[2] = vmlsl_lane_s32(t64[2], step1l[2], vget_high_s32(cospis0), 0);
t64[3] = vmlsl_lane_s32(t64[3], step1h[2], vget_high_s32(cospis0), 0);
t64[4] = vmlsl_lane_s32(t64[4], step1l[3], vget_low_s32(cospis0), 1);
t64[5] = vmlsl_lane_s32(t64[5], step1h[3], vget_low_s32(cospis0), 1);
t64[6] = vmlal_lane_s32(t64[6], step1l[3], vget_high_s32(cospis0), 1);
t64[7] = vmlal_lane_s32(t64[7], step1h[3], vget_high_s32(cospis0), 1);
t32[0] = vrshrn_n_s64(t64[0], DCT_CONST_BITS);
t32[1] = vrshrn_n_s64(t64[1], DCT_CONST_BITS);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
t32[4] = vrshrn_n_s64(t64[4], DCT_CONST_BITS);
t32[5] = vrshrn_n_s64(t64[5], DCT_CONST_BITS);
t32[6] = vrshrn_n_s64(t64[6], DCT_CONST_BITS);
t32[7] = vrshrn_n_s64(t64[7], DCT_CONST_BITS);
step2[0] = vcombine_s32(t32[0], t32[1]);
step2[1] = vcombine_s32(t32[2], t32[3]);
step2[2] = vcombine_s32(t32[4], t32[5]);
step2[3] = vcombine_s32(t32[6], t32[7]);
step2[4] = vaddq_s32(step1[4], step1[5]);
step2[5] = vsubq_s32(step1[4], step1[5]);
step2[6] = vsubq_s32(step1[7], step1[6]);
step2[7] = vaddq_s32(step1[7], step1[6]);
// stage 3
step1[0] = vaddq_s32(step2[0], step2[3]);
step1[1] = vaddq_s32(step2[1], step2[2]);
step1[2] = vsubq_s32(step2[1], step2[2]);
step1[3] = vsubq_s32(step2[0], step2[3]);
t64[2] = vmull_lane_s32(vget_low_s32(step2[6]), vget_high_s32(cospis0), 0);
t64[3] = vmull_lane_s32(vget_high_s32(step2[6]), vget_high_s32(cospis0), 0);
t64[0] =
vmlsl_lane_s32(t64[2], vget_low_s32(step2[5]), vget_high_s32(cospis0), 0);
t64[1] = vmlsl_lane_s32(t64[3], vget_high_s32(step2[5]),
vget_high_s32(cospis0), 0);
t64[2] =
vmlal_lane_s32(t64[2], vget_low_s32(step2[5]), vget_high_s32(cospis0), 0);
t64[3] = vmlal_lane_s32(t64[3], vget_high_s32(step2[5]),
vget_high_s32(cospis0), 0);
t32[0] = vrshrn_n_s64(t64[0], DCT_CONST_BITS);
t32[1] = vrshrn_n_s64(t64[1], DCT_CONST_BITS);
t32[2] = vrshrn_n_s64(t64[2], DCT_CONST_BITS);
t32[3] = vrshrn_n_s64(t64[3], DCT_CONST_BITS);
step1[5] = vcombine_s32(t32[0], t32[1]);
step1[6] = vcombine_s32(t32[2], t32[3]);
// stage 4
*io0 = vaddq_s32(step1[0], step2[7]);
*io1 = vaddq_s32(step1[1], step1[6]);
*io2 = vaddq_s32(step1[2], step1[5]);
*io3 = vaddq_s32(step1[3], step2[4]);
*io4 = vsubq_s32(step1[3], step2[4]);
*io5 = vsubq_s32(step1[2], step1[5]);
*io6 = vsubq_s32(step1[1], step1[6]);
*io7 = vsubq_s32(step1[0], step2[7]);
}
void vpx_highbd_idct8x8_64_add_neon(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int32x4_t a0 = vld1q_s32(input);
int32x4_t a1 = vld1q_s32(input + 4);
int32x4_t a2 = vld1q_s32(input + 8);
int32x4_t a3 = vld1q_s32(input + 12);
int32x4_t a4 = vld1q_s32(input + 16);
int32x4_t a5 = vld1q_s32(input + 20);
int32x4_t a6 = vld1q_s32(input + 24);
int32x4_t a7 = vld1q_s32(input + 28);
int32x4_t a8 = vld1q_s32(input + 32);
int32x4_t a9 = vld1q_s32(input + 36);
int32x4_t a10 = vld1q_s32(input + 40);
int32x4_t a11 = vld1q_s32(input + 44);
int32x4_t a12 = vld1q_s32(input + 48);
int32x4_t a13 = vld1q_s32(input + 52);
int32x4_t a14 = vld1q_s32(input + 56);
int32x4_t a15 = vld1q_s32(input + 60);
int16x8_t c0, c1, c2, c3, c4, c5, c6, c7;
if (bd == 8) {
const int16x8_t cospis = vld1q_s16(kCospi);
const int16x4_t cospis0 = vget_low_s16(cospis); // cospi 0, 8, 16, 24
const int16x4_t cospis1 = vget_high_s16(cospis); // cospi 4, 12, 20, 28
int16x8_t b0 = vcombine_s16(vmovn_s32(a0), vmovn_s32(a1));
int16x8_t b1 = vcombine_s16(vmovn_s32(a2), vmovn_s32(a3));
int16x8_t b2 = vcombine_s16(vmovn_s32(a4), vmovn_s32(a5));
int16x8_t b3 = vcombine_s16(vmovn_s32(a6), vmovn_s32(a7));
int16x8_t b4 = vcombine_s16(vmovn_s32(a8), vmovn_s32(a9));
int16x8_t b5 = vcombine_s16(vmovn_s32(a10), vmovn_s32(a11));
int16x8_t b6 = vcombine_s16(vmovn_s32(a12), vmovn_s32(a13));
int16x8_t b7 = vcombine_s16(vmovn_s32(a14), vmovn_s32(a15));
idct8x8_64_1d_bd8(cospis0, cospis1, &b0, &b1, &b2, &b3, &b4, &b5, &b6, &b7);
idct8x8_64_1d_bd8(cospis0, cospis1, &b0, &b1, &b2, &b3, &b4, &b5, &b6, &b7);
c0 = vrshrq_n_s16(b0, 5);
c1 = vrshrq_n_s16(b1, 5);
c2 = vrshrq_n_s16(b2, 5);
c3 = vrshrq_n_s16(b3, 5);
c4 = vrshrq_n_s16(b4, 5);
c5 = vrshrq_n_s16(b5, 5);
c6 = vrshrq_n_s16(b6, 5);
c7 = vrshrq_n_s16(b7, 5);
} else {
const int32x4_t cospis0 = vld1q_s32(kCospi32); // cospi 0, 8, 16, 24
const int32x4_t cospis1 = vld1q_s32(kCospi32 + 4); // cospi 4, 12, 20, 28
if (bd == 10) {
idct8x8_64_half1d_bd10(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5,
&a6, &a7);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a8, &a9, &a10, &a11, &a12, &a13,
&a14, &a15);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a0, &a8, &a1, &a9, &a2, &a10,
&a3, &a11);
idct8x8_64_half1d_bd10(cospis0, cospis1, &a4, &a12, &a5, &a13, &a6, &a14,
&a7, &a15);
} else {
idct8x8_64_half1d_bd12(cospis0, cospis1, &a0, &a1, &a2, &a3, &a4, &a5,
&a6, &a7);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a8, &a9, &a10, &a11, &a12, &a13,
&a14, &a15);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a0, &a8, &a1, &a9, &a2, &a10,
&a3, &a11);
idct8x8_64_half1d_bd12(cospis0, cospis1, &a4, &a12, &a5, &a13, &a6, &a14,
&a7, &a15);
}
c0 = vcombine_s16(vrshrn_n_s32(a0, 5), vrshrn_n_s32(a4, 5));
c1 = vcombine_s16(vrshrn_n_s32(a8, 5), vrshrn_n_s32(a12, 5));
c2 = vcombine_s16(vrshrn_n_s32(a1, 5), vrshrn_n_s32(a5, 5));
c3 = vcombine_s16(vrshrn_n_s32(a9, 5), vrshrn_n_s32(a13, 5));
c4 = vcombine_s16(vrshrn_n_s32(a2, 5), vrshrn_n_s32(a6, 5));
c5 = vcombine_s16(vrshrn_n_s32(a10, 5), vrshrn_n_s32(a14, 5));
c6 = vcombine_s16(vrshrn_n_s32(a3, 5), vrshrn_n_s32(a7, 5));
c7 = vcombine_s16(vrshrn_n_s32(a11, 5), vrshrn_n_s32(a15, 5));
}
highbd_add8x8(c0, c1, c2, c3, c4, c5, c6, c7, dest, stride, bd);
}