ref: a58e0b2a74b76fc218ac6a4ceffe7a8ec77557d7
dir: /vpx_dsp/arm/idct16x16_add_neon.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>
#include "./vpx_config.h"
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/txfm_common.h"
void vpx_idct16x16_256_add_neon_pass1(int16_t *in, int16_t *out,
int output_stride) {
int16x4_t d0s16, d1s16, d2s16, d3s16;
int16x4_t d8s16, d9s16, d10s16, d11s16, d12s16, d13s16, d14s16, d15s16;
int16x4_t d16s16, d17s16, d18s16, d19s16, d20s16, d21s16, d22s16, d23s16;
int16x4_t d24s16, d25s16, d26s16, d27s16, d28s16, d29s16, d30s16, d31s16;
uint64x1_t d16u64, d17u64, d18u64, d19u64, d20u64, d21u64, d22u64, d23u64;
uint64x1_t d24u64, d25u64, d26u64, d27u64, d28u64, d29u64, d30u64, d31u64;
int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
int32x4_t q0s32, q1s32, q2s32, q3s32, q5s32, q6s32, q9s32;
int32x4_t q10s32, q11s32, q12s32, q13s32, q15s32;
int16x8x2_t q0x2s16;
q0x2s16 = vld2q_s16(in);
q8s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q9s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q10s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q11s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q12s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q13s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q14s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q15s16 = q0x2s16.val[0];
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
d16s16 = vget_low_s16(q8s16);
d17s16 = vget_high_s16(q8s16);
d18s16 = vget_low_s16(q9s16);
d19s16 = vget_high_s16(q9s16);
d20s16 = vget_low_s16(q10s16);
d21s16 = vget_high_s16(q10s16);
d22s16 = vget_low_s16(q11s16);
d23s16 = vget_high_s16(q11s16);
d24s16 = vget_low_s16(q12s16);
d25s16 = vget_high_s16(q12s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d28s16 = vget_low_s16(q14s16);
d29s16 = vget_high_s16(q14s16);
d30s16 = vget_low_s16(q15s16);
d31s16 = vget_high_s16(q15s16);
// stage 3
d0s16 = vdup_n_s16((int16_t)cospi_28_64);
d1s16 = vdup_n_s16((int16_t)cospi_4_64);
q2s32 = vmull_s16(d18s16, d0s16);
q3s32 = vmull_s16(d19s16, d0s16);
q5s32 = vmull_s16(d18s16, d1s16);
q6s32 = vmull_s16(d19s16, d1s16);
q2s32 = vmlsl_s16(q2s32, d30s16, d1s16);
q3s32 = vmlsl_s16(q3s32, d31s16, d1s16);
q5s32 = vmlal_s16(q5s32, d30s16, d0s16);
q6s32 = vmlal_s16(q6s32, d31s16, d0s16);
d2s16 = vdup_n_s16((int16_t)cospi_12_64);
d3s16 = vdup_n_s16((int16_t)cospi_20_64);
d8s16 = vqrshrn_n_s32(q2s32, 14);
d9s16 = vqrshrn_n_s32(q3s32, 14);
d14s16 = vqrshrn_n_s32(q5s32, 14);
d15s16 = vqrshrn_n_s32(q6s32, 14);
q4s16 = vcombine_s16(d8s16, d9s16);
q7s16 = vcombine_s16(d14s16, d15s16);
q2s32 = vmull_s16(d26s16, d2s16);
q3s32 = vmull_s16(d27s16, d2s16);
q9s32 = vmull_s16(d26s16, d3s16);
q15s32 = vmull_s16(d27s16, d3s16);
q2s32 = vmlsl_s16(q2s32, d22s16, d3s16);
q3s32 = vmlsl_s16(q3s32, d23s16, d3s16);
q9s32 = vmlal_s16(q9s32, d22s16, d2s16);
q15s32 = vmlal_s16(q15s32, d23s16, d2s16);
d10s16 = vqrshrn_n_s32(q2s32, 14);
d11s16 = vqrshrn_n_s32(q3s32, 14);
d12s16 = vqrshrn_n_s32(q9s32, 14);
d13s16 = vqrshrn_n_s32(q15s32, 14);
q5s16 = vcombine_s16(d10s16, d11s16);
q6s16 = vcombine_s16(d12s16, d13s16);
// stage 4
d30s16 = vdup_n_s16((int16_t)cospi_16_64);
q2s32 = vmull_s16(d16s16, d30s16);
q11s32 = vmull_s16(d17s16, d30s16);
q0s32 = vmull_s16(d24s16, d30s16);
q1s32 = vmull_s16(d25s16, d30s16);
d30s16 = vdup_n_s16((int16_t)cospi_24_64);
d31s16 = vdup_n_s16((int16_t)cospi_8_64);
q3s32 = vaddq_s32(q2s32, q0s32);
q12s32 = vaddq_s32(q11s32, q1s32);
q13s32 = vsubq_s32(q2s32, q0s32);
q1s32 = vsubq_s32(q11s32, q1s32);
d16s16 = vqrshrn_n_s32(q3s32, 14);
d17s16 = vqrshrn_n_s32(q12s32, 14);
d18s16 = vqrshrn_n_s32(q13s32, 14);
d19s16 = vqrshrn_n_s32(q1s32, 14);
q8s16 = vcombine_s16(d16s16, d17s16);
q9s16 = vcombine_s16(d18s16, d19s16);
q0s32 = vmull_s16(d20s16, d31s16);
q1s32 = vmull_s16(d21s16, d31s16);
q12s32 = vmull_s16(d20s16, d30s16);
q13s32 = vmull_s16(d21s16, d30s16);
q0s32 = vmlal_s16(q0s32, d28s16, d30s16);
q1s32 = vmlal_s16(q1s32, d29s16, d30s16);
q12s32 = vmlsl_s16(q12s32, d28s16, d31s16);
q13s32 = vmlsl_s16(q13s32, d29s16, d31s16);
d22s16 = vqrshrn_n_s32(q0s32, 14);
d23s16 = vqrshrn_n_s32(q1s32, 14);
d20s16 = vqrshrn_n_s32(q12s32, 14);
d21s16 = vqrshrn_n_s32(q13s32, 14);
q10s16 = vcombine_s16(d20s16, d21s16);
q11s16 = vcombine_s16(d22s16, d23s16);
q13s16 = vsubq_s16(q4s16, q5s16);
q4s16 = vaddq_s16(q4s16, q5s16);
q14s16 = vsubq_s16(q7s16, q6s16);
q15s16 = vaddq_s16(q6s16, q7s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d28s16 = vget_low_s16(q14s16);
d29s16 = vget_high_s16(q14s16);
// stage 5
q0s16 = vaddq_s16(q8s16, q11s16);
q1s16 = vaddq_s16(q9s16, q10s16);
q2s16 = vsubq_s16(q9s16, q10s16);
q3s16 = vsubq_s16(q8s16, q11s16);
d16s16 = vdup_n_s16((int16_t)cospi_16_64);
q11s32 = vmull_s16(d26s16, d16s16);
q12s32 = vmull_s16(d27s16, d16s16);
q9s32 = vmull_s16(d28s16, d16s16);
q10s32 = vmull_s16(d29s16, d16s16);
q6s32 = vsubq_s32(q9s32, q11s32);
q13s32 = vsubq_s32(q10s32, q12s32);
q9s32 = vaddq_s32(q9s32, q11s32);
q10s32 = vaddq_s32(q10s32, q12s32);
d10s16 = vqrshrn_n_s32(q6s32, 14);
d11s16 = vqrshrn_n_s32(q13s32, 14);
d12s16 = vqrshrn_n_s32(q9s32, 14);
d13s16 = vqrshrn_n_s32(q10s32, 14);
q5s16 = vcombine_s16(d10s16, d11s16);
q6s16 = vcombine_s16(d12s16, d13s16);
// stage 6
q8s16 = vaddq_s16(q0s16, q15s16);
q9s16 = vaddq_s16(q1s16, q6s16);
q10s16 = vaddq_s16(q2s16, q5s16);
q11s16 = vaddq_s16(q3s16, q4s16);
q12s16 = vsubq_s16(q3s16, q4s16);
q13s16 = vsubq_s16(q2s16, q5s16);
q14s16 = vsubq_s16(q1s16, q6s16);
q15s16 = vsubq_s16(q0s16, q15s16);
d16u64 = vreinterpret_u64_s16(vget_low_s16(q8s16));
d17u64 = vreinterpret_u64_s16(vget_high_s16(q8s16));
d18u64 = vreinterpret_u64_s16(vget_low_s16(q9s16));
d19u64 = vreinterpret_u64_s16(vget_high_s16(q9s16));
d20u64 = vreinterpret_u64_s16(vget_low_s16(q10s16));
d21u64 = vreinterpret_u64_s16(vget_high_s16(q10s16));
d22u64 = vreinterpret_u64_s16(vget_low_s16(q11s16));
d23u64 = vreinterpret_u64_s16(vget_high_s16(q11s16));
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
d28u64 = vreinterpret_u64_s16(vget_low_s16(q14s16));
d29u64 = vreinterpret_u64_s16(vget_high_s16(q14s16));
d30u64 = vreinterpret_u64_s16(vget_low_s16(q15s16));
d31u64 = vreinterpret_u64_s16(vget_high_s16(q15s16));
// store the data
output_stride >>= 1; // output_stride / 2, out is int16_t
vst1_u64((uint64_t *)out, d16u64);
out += output_stride;
vst1_u64((uint64_t *)out, d17u64);
out += output_stride;
vst1_u64((uint64_t *)out, d18u64);
out += output_stride;
vst1_u64((uint64_t *)out, d19u64);
out += output_stride;
vst1_u64((uint64_t *)out, d20u64);
out += output_stride;
vst1_u64((uint64_t *)out, d21u64);
out += output_stride;
vst1_u64((uint64_t *)out, d22u64);
out += output_stride;
vst1_u64((uint64_t *)out, d23u64);
out += output_stride;
vst1_u64((uint64_t *)out, d24u64);
out += output_stride;
vst1_u64((uint64_t *)out, d25u64);
out += output_stride;
vst1_u64((uint64_t *)out, d26u64);
out += output_stride;
vst1_u64((uint64_t *)out, d27u64);
out += output_stride;
vst1_u64((uint64_t *)out, d28u64);
out += output_stride;
vst1_u64((uint64_t *)out, d29u64);
out += output_stride;
vst1_u64((uint64_t *)out, d30u64);
out += output_stride;
vst1_u64((uint64_t *)out, d31u64);
}
void vpx_idct16x16_256_add_neon_pass2(int16_t *src, int16_t *out,
int16_t *pass1Output, int16_t skip_adding,
uint8_t *dest, int dest_stride) {
uint8_t *d;
uint8x8_t d12u8, d13u8;
int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
int16x4_t d8s16, d9s16, d10s16, d11s16, d12s16, d13s16, d14s16, d15s16;
int16x4_t d16s16, d17s16, d18s16, d19s16, d20s16, d21s16, d22s16, d23s16;
int16x4_t d24s16, d25s16, d26s16, d27s16, d28s16, d29s16, d30s16, d31s16;
uint64x1_t d24u64, d25u64, d26u64, d27u64;
int64x1_t d12s64, d13s64;
uint16x8_t q2u16, q3u16, q4u16, q5u16, q8u16;
uint16x8_t q9u16, q12u16, q13u16, q14u16, q15u16;
int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
int32x4_t q0s32, q1s32, q2s32, q3s32, q4s32, q5s32, q6s32, q8s32, q9s32;
int32x4_t q10s32, q11s32, q12s32, q13s32;
int16x8x2_t q0x2s16;
q0x2s16 = vld2q_s16(src);
q8s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q9s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q10s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q11s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q12s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q13s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q14s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q15s16 = q0x2s16.val[0];
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
d16s16 = vget_low_s16(q8s16);
d17s16 = vget_high_s16(q8s16);
d18s16 = vget_low_s16(q9s16);
d19s16 = vget_high_s16(q9s16);
d20s16 = vget_low_s16(q10s16);
d21s16 = vget_high_s16(q10s16);
d22s16 = vget_low_s16(q11s16);
d23s16 = vget_high_s16(q11s16);
d24s16 = vget_low_s16(q12s16);
d25s16 = vget_high_s16(q12s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d28s16 = vget_low_s16(q14s16);
d29s16 = vget_high_s16(q14s16);
d30s16 = vget_low_s16(q15s16);
d31s16 = vget_high_s16(q15s16);
// stage 3
d12s16 = vdup_n_s16((int16_t)cospi_30_64);
d13s16 = vdup_n_s16((int16_t)cospi_2_64);
q2s32 = vmull_s16(d16s16, d12s16);
q3s32 = vmull_s16(d17s16, d12s16);
q1s32 = vmull_s16(d16s16, d13s16);
q4s32 = vmull_s16(d17s16, d13s16);
q2s32 = vmlsl_s16(q2s32, d30s16, d13s16);
q3s32 = vmlsl_s16(q3s32, d31s16, d13s16);
q1s32 = vmlal_s16(q1s32, d30s16, d12s16);
q4s32 = vmlal_s16(q4s32, d31s16, d12s16);
d0s16 = vqrshrn_n_s32(q2s32, 14);
d1s16 = vqrshrn_n_s32(q3s32, 14);
d14s16 = vqrshrn_n_s32(q1s32, 14);
d15s16 = vqrshrn_n_s32(q4s32, 14);
q0s16 = vcombine_s16(d0s16, d1s16);
q7s16 = vcombine_s16(d14s16, d15s16);
d30s16 = vdup_n_s16((int16_t)cospi_14_64);
d31s16 = vdup_n_s16((int16_t)cospi_18_64);
q2s32 = vmull_s16(d24s16, d30s16);
q3s32 = vmull_s16(d25s16, d30s16);
q4s32 = vmull_s16(d24s16, d31s16);
q5s32 = vmull_s16(d25s16, d31s16);
q2s32 = vmlsl_s16(q2s32, d22s16, d31s16);
q3s32 = vmlsl_s16(q3s32, d23s16, d31s16);
q4s32 = vmlal_s16(q4s32, d22s16, d30s16);
q5s32 = vmlal_s16(q5s32, d23s16, d30s16);
d2s16 = vqrshrn_n_s32(q2s32, 14);
d3s16 = vqrshrn_n_s32(q3s32, 14);
d12s16 = vqrshrn_n_s32(q4s32, 14);
d13s16 = vqrshrn_n_s32(q5s32, 14);
q1s16 = vcombine_s16(d2s16, d3s16);
q6s16 = vcombine_s16(d12s16, d13s16);
d30s16 = vdup_n_s16((int16_t)cospi_22_64);
d31s16 = vdup_n_s16((int16_t)cospi_10_64);
q11s32 = vmull_s16(d20s16, d30s16);
q12s32 = vmull_s16(d21s16, d30s16);
q4s32 = vmull_s16(d20s16, d31s16);
q5s32 = vmull_s16(d21s16, d31s16);
q11s32 = vmlsl_s16(q11s32, d26s16, d31s16);
q12s32 = vmlsl_s16(q12s32, d27s16, d31s16);
q4s32 = vmlal_s16(q4s32, d26s16, d30s16);
q5s32 = vmlal_s16(q5s32, d27s16, d30s16);
d4s16 = vqrshrn_n_s32(q11s32, 14);
d5s16 = vqrshrn_n_s32(q12s32, 14);
d11s16 = vqrshrn_n_s32(q5s32, 14);
d10s16 = vqrshrn_n_s32(q4s32, 14);
q2s16 = vcombine_s16(d4s16, d5s16);
q5s16 = vcombine_s16(d10s16, d11s16);
d30s16 = vdup_n_s16((int16_t)cospi_6_64);
d31s16 = vdup_n_s16((int16_t)cospi_26_64);
q10s32 = vmull_s16(d28s16, d30s16);
q11s32 = vmull_s16(d29s16, d30s16);
q12s32 = vmull_s16(d28s16, d31s16);
q13s32 = vmull_s16(d29s16, d31s16);
q10s32 = vmlsl_s16(q10s32, d18s16, d31s16);
q11s32 = vmlsl_s16(q11s32, d19s16, d31s16);
q12s32 = vmlal_s16(q12s32, d18s16, d30s16);
q13s32 = vmlal_s16(q13s32, d19s16, d30s16);
d6s16 = vqrshrn_n_s32(q10s32, 14);
d7s16 = vqrshrn_n_s32(q11s32, 14);
d8s16 = vqrshrn_n_s32(q12s32, 14);
d9s16 = vqrshrn_n_s32(q13s32, 14);
q3s16 = vcombine_s16(d6s16, d7s16);
q4s16 = vcombine_s16(d8s16, d9s16);
// stage 3
q9s16 = vsubq_s16(q0s16, q1s16);
q0s16 = vaddq_s16(q0s16, q1s16);
q10s16 = vsubq_s16(q3s16, q2s16);
q11s16 = vaddq_s16(q2s16, q3s16);
q12s16 = vaddq_s16(q4s16, q5s16);
q13s16 = vsubq_s16(q4s16, q5s16);
q14s16 = vsubq_s16(q7s16, q6s16);
q7s16 = vaddq_s16(q6s16, q7s16);
// stage 4
d18s16 = vget_low_s16(q9s16);
d19s16 = vget_high_s16(q9s16);
d20s16 = vget_low_s16(q10s16);
d21s16 = vget_high_s16(q10s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d28s16 = vget_low_s16(q14s16);
d29s16 = vget_high_s16(q14s16);
d30s16 = vdup_n_s16((int16_t)cospi_8_64);
d31s16 = vdup_n_s16((int16_t)cospi_24_64);
q2s32 = vmull_s16(d18s16, d31s16);
q3s32 = vmull_s16(d19s16, d31s16);
q4s32 = vmull_s16(d28s16, d31s16);
q5s32 = vmull_s16(d29s16, d31s16);
q2s32 = vmlal_s16(q2s32, d28s16, d30s16);
q3s32 = vmlal_s16(q3s32, d29s16, d30s16);
q4s32 = vmlsl_s16(q4s32, d18s16, d30s16);
q5s32 = vmlsl_s16(q5s32, d19s16, d30s16);
d12s16 = vqrshrn_n_s32(q2s32, 14);
d13s16 = vqrshrn_n_s32(q3s32, 14);
d2s16 = vqrshrn_n_s32(q4s32, 14);
d3s16 = vqrshrn_n_s32(q5s32, 14);
q1s16 = vcombine_s16(d2s16, d3s16);
q6s16 = vcombine_s16(d12s16, d13s16);
q3s16 = q11s16;
q4s16 = q12s16;
d30s16 = vdup_n_s16(-cospi_8_64);
q11s32 = vmull_s16(d26s16, d30s16);
q12s32 = vmull_s16(d27s16, d30s16);
q8s32 = vmull_s16(d20s16, d30s16);
q9s32 = vmull_s16(d21s16, d30s16);
q11s32 = vmlsl_s16(q11s32, d20s16, d31s16);
q12s32 = vmlsl_s16(q12s32, d21s16, d31s16);
q8s32 = vmlal_s16(q8s32, d26s16, d31s16);
q9s32 = vmlal_s16(q9s32, d27s16, d31s16);
d4s16 = vqrshrn_n_s32(q11s32, 14);
d5s16 = vqrshrn_n_s32(q12s32, 14);
d10s16 = vqrshrn_n_s32(q8s32, 14);
d11s16 = vqrshrn_n_s32(q9s32, 14);
q2s16 = vcombine_s16(d4s16, d5s16);
q5s16 = vcombine_s16(d10s16, d11s16);
// stage 5
q8s16 = vaddq_s16(q0s16, q3s16);
q9s16 = vaddq_s16(q1s16, q2s16);
q10s16 = vsubq_s16(q1s16, q2s16);
q11s16 = vsubq_s16(q0s16, q3s16);
q12s16 = vsubq_s16(q7s16, q4s16);
q13s16 = vsubq_s16(q6s16, q5s16);
q14s16 = vaddq_s16(q6s16, q5s16);
q15s16 = vaddq_s16(q7s16, q4s16);
// stage 6
d20s16 = vget_low_s16(q10s16);
d21s16 = vget_high_s16(q10s16);
d22s16 = vget_low_s16(q11s16);
d23s16 = vget_high_s16(q11s16);
d24s16 = vget_low_s16(q12s16);
d25s16 = vget_high_s16(q12s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d14s16 = vdup_n_s16((int16_t)cospi_16_64);
q3s32 = vmull_s16(d26s16, d14s16);
q4s32 = vmull_s16(d27s16, d14s16);
q0s32 = vmull_s16(d20s16, d14s16);
q1s32 = vmull_s16(d21s16, d14s16);
q5s32 = vsubq_s32(q3s32, q0s32);
q6s32 = vsubq_s32(q4s32, q1s32);
q10s32 = vaddq_s32(q3s32, q0s32);
q4s32 = vaddq_s32(q4s32, q1s32);
d4s16 = vqrshrn_n_s32(q5s32, 14);
d5s16 = vqrshrn_n_s32(q6s32, 14);
d10s16 = vqrshrn_n_s32(q10s32, 14);
d11s16 = vqrshrn_n_s32(q4s32, 14);
q2s16 = vcombine_s16(d4s16, d5s16);
q5s16 = vcombine_s16(d10s16, d11s16);
q0s32 = vmull_s16(d22s16, d14s16);
q1s32 = vmull_s16(d23s16, d14s16);
q13s32 = vmull_s16(d24s16, d14s16);
q6s32 = vmull_s16(d25s16, d14s16);
q10s32 = vsubq_s32(q13s32, q0s32);
q4s32 = vsubq_s32(q6s32, q1s32);
q13s32 = vaddq_s32(q13s32, q0s32);
q6s32 = vaddq_s32(q6s32, q1s32);
d6s16 = vqrshrn_n_s32(q10s32, 14);
d7s16 = vqrshrn_n_s32(q4s32, 14);
d8s16 = vqrshrn_n_s32(q13s32, 14);
d9s16 = vqrshrn_n_s32(q6s32, 14);
q3s16 = vcombine_s16(d6s16, d7s16);
q4s16 = vcombine_s16(d8s16, d9s16);
// stage 7
if (skip_adding != 0) {
d = dest;
// load the data in pass1
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
d13s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q12s16 = vaddq_s16(q0s16, q15s16);
q13s16 = vaddq_s16(q1s16, q14s16);
q12s16 = vrshrq_n_s16(q12s16, 6);
q13s16 = vrshrq_n_s16(q13s16, 6);
q12u16 =
vaddw_u8(vreinterpretq_u16_s16(q12s16), vreinterpret_u8_s64(d12s64));
q13u16 =
vaddw_u8(vreinterpretq_u16_s16(q13s16), vreinterpret_u8_s64(d13s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
d13u8 = vqmovun_s16(vreinterpretq_s16_u16(q13u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d13u8));
d += dest_stride;
q14s16 = vsubq_s16(q1s16, q14s16);
q15s16 = vsubq_s16(q0s16, q15s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
pass1Output += 8;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
d13s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q12s16 = vaddq_s16(q10s16, q5s16);
q13s16 = vaddq_s16(q11s16, q4s16);
q12s16 = vrshrq_n_s16(q12s16, 6);
q13s16 = vrshrq_n_s16(q13s16, 6);
q12u16 =
vaddw_u8(vreinterpretq_u16_s16(q12s16), vreinterpret_u8_s64(d12s64));
q13u16 =
vaddw_u8(vreinterpretq_u16_s16(q13s16), vreinterpret_u8_s64(d13s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
d13u8 = vqmovun_s16(vreinterpretq_s16_u16(q13u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d13u8));
d += dest_stride;
q4s16 = vsubq_s16(q11s16, q4s16);
q5s16 = vsubq_s16(q10s16, q5s16);
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
d13s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q12s16 = vaddq_s16(q0s16, q3s16);
q13s16 = vaddq_s16(q1s16, q2s16);
q12s16 = vrshrq_n_s16(q12s16, 6);
q13s16 = vrshrq_n_s16(q13s16, 6);
q12u16 =
vaddw_u8(vreinterpretq_u16_s16(q12s16), vreinterpret_u8_s64(d12s64));
q13u16 =
vaddw_u8(vreinterpretq_u16_s16(q13s16), vreinterpret_u8_s64(d13s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
d13u8 = vqmovun_s16(vreinterpretq_s16_u16(q13u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d13u8));
d += dest_stride;
q2s16 = vsubq_s16(q1s16, q2s16);
q3s16 = vsubq_s16(q0s16, q3s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
d13s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q12s16 = vaddq_s16(q10s16, q9s16);
q13s16 = vaddq_s16(q11s16, q8s16);
q12s16 = vrshrq_n_s16(q12s16, 6);
q13s16 = vrshrq_n_s16(q13s16, 6);
q12u16 =
vaddw_u8(vreinterpretq_u16_s16(q12s16), vreinterpret_u8_s64(d12s64));
q13u16 =
vaddw_u8(vreinterpretq_u16_s16(q13s16), vreinterpret_u8_s64(d13s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q12u16));
d13u8 = vqmovun_s16(vreinterpretq_s16_u16(q13u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d13u8));
d += dest_stride;
q8s16 = vsubq_s16(q11s16, q8s16);
q9s16 = vsubq_s16(q10s16, q9s16);
// store the data out 8,9,10,11,12,13,14,15
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q8s16 = vrshrq_n_s16(q8s16, 6);
q8u16 = vaddw_u8(vreinterpretq_u16_s16(q8s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q8u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q9s16 = vrshrq_n_s16(q9s16, 6);
q9u16 = vaddw_u8(vreinterpretq_u16_s16(q9s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q9u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q2s16 = vrshrq_n_s16(q2s16, 6);
q2u16 = vaddw_u8(vreinterpretq_u16_s16(q2s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q2u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q3s16 = vrshrq_n_s16(q3s16, 6);
q3u16 = vaddw_u8(vreinterpretq_u16_s16(q3s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q3u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q4s16 = vrshrq_n_s16(q4s16, 6);
q4u16 = vaddw_u8(vreinterpretq_u16_s16(q4s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q4u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q5s16 = vrshrq_n_s16(q5s16, 6);
q5u16 = vaddw_u8(vreinterpretq_u16_s16(q5s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q5u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
dest += dest_stride;
q14s16 = vrshrq_n_s16(q14s16, 6);
q14u16 =
vaddw_u8(vreinterpretq_u16_s16(q14s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q14u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
d += dest_stride;
d12s64 = vld1_s64((int64_t *)dest);
q15s16 = vrshrq_n_s16(q15s16, 6);
q15u16 =
vaddw_u8(vreinterpretq_u16_s16(q15s16), vreinterpret_u8_s64(d12s64));
d12u8 = vqmovun_s16(vreinterpretq_s16_u16(q15u16));
vst1_u64((uint64_t *)d, vreinterpret_u64_u8(d12u8));
} else { // skip_adding_dest
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q0s16, q15s16);
q13s16 = vaddq_s16(q1s16, q14s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q14s16 = vsubq_s16(q1s16, q14s16);
q15s16 = vsubq_s16(q0s16, q15s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q10s16, q5s16);
q13s16 = vaddq_s16(q11s16, q4s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q4s16 = vsubq_s16(q11s16, q4s16);
q5s16 = vsubq_s16(q10s16, q5s16);
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q0s16, q3s16);
q13s16 = vaddq_s16(q1s16, q2s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q2s16 = vsubq_s16(q1s16, q2s16);
q3s16 = vsubq_s16(q0s16, q3s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q10s16, q9s16);
q13s16 = vaddq_s16(q11s16, q8s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q8s16 = vsubq_s16(q11s16, q8s16);
q9s16 = vsubq_s16(q10s16, q9s16);
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q8s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q8s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q9s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q9s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q2s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q2s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q3s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q3s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q4s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q4s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q5s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q5s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q14s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q14s16)));
out += 12;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_low_s16(q15s16)));
out += 4;
vst1_u64((uint64_t *)out, vreinterpret_u64_s16(vget_high_s16(q15s16)));
}
}
void vpx_idct16x16_10_add_neon_pass1(int16_t *in, int16_t *out,
int output_stride) {
int16x4_t d4s16;
int16x4_t d8s16, d9s16, d10s16, d11s16, d12s16, d13s16, d14s16, d15s16;
uint64x1_t d4u64, d5u64, d18u64, d19u64, d20u64, d21u64, d22u64, d23u64;
uint64x1_t d24u64, d25u64, d26u64, d27u64, d28u64, d29u64, d30u64, d31u64;
int16x8_t q0s16, q1s16, q2s16, q4s16, q5s16, q6s16, q7s16;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
int32x4_t q6s32, q9s32;
int32x4_t q10s32, q11s32, q12s32, q15s32;
int16x8x2_t q0x2s16;
q0x2s16 = vld2q_s16(in);
q8s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q9s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q10s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q11s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q12s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q13s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q14s16 = q0x2s16.val[0];
in += 16;
q0x2s16 = vld2q_s16(in);
q15s16 = q0x2s16.val[0];
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
// stage 3
q0s16 = vdupq_n_s16((int16_t)cospi_28_64 * 2);
q1s16 = vdupq_n_s16((int16_t)cospi_4_64 * 2);
q4s16 = vqrdmulhq_s16(q9s16, q0s16);
q7s16 = vqrdmulhq_s16(q9s16, q1s16);
// stage 4
q1s16 = vdupq_n_s16((int16_t)cospi_16_64 * 2);
d4s16 = vdup_n_s16((int16_t)cospi_16_64);
q8s16 = vqrdmulhq_s16(q8s16, q1s16);
d8s16 = vget_low_s16(q4s16);
d9s16 = vget_high_s16(q4s16);
d14s16 = vget_low_s16(q7s16);
d15s16 = vget_high_s16(q7s16);
q9s32 = vmull_s16(d14s16, d4s16);
q10s32 = vmull_s16(d15s16, d4s16);
q12s32 = vmull_s16(d9s16, d4s16);
q11s32 = vmull_s16(d8s16, d4s16);
q15s32 = vsubq_s32(q10s32, q12s32);
q6s32 = vsubq_s32(q9s32, q11s32);
q9s32 = vaddq_s32(q9s32, q11s32);
q10s32 = vaddq_s32(q10s32, q12s32);
d11s16 = vqrshrn_n_s32(q15s32, 14);
d10s16 = vqrshrn_n_s32(q6s32, 14);
d12s16 = vqrshrn_n_s32(q9s32, 14);
d13s16 = vqrshrn_n_s32(q10s32, 14);
q5s16 = vcombine_s16(d10s16, d11s16);
q6s16 = vcombine_s16(d12s16, d13s16);
// stage 6
q2s16 = vaddq_s16(q8s16, q7s16);
q9s16 = vaddq_s16(q8s16, q6s16);
q10s16 = vaddq_s16(q8s16, q5s16);
q11s16 = vaddq_s16(q8s16, q4s16);
q12s16 = vsubq_s16(q8s16, q4s16);
q13s16 = vsubq_s16(q8s16, q5s16);
q14s16 = vsubq_s16(q8s16, q6s16);
q15s16 = vsubq_s16(q8s16, q7s16);
d4u64 = vreinterpret_u64_s16(vget_low_s16(q2s16));
d5u64 = vreinterpret_u64_s16(vget_high_s16(q2s16));
d18u64 = vreinterpret_u64_s16(vget_low_s16(q9s16));
d19u64 = vreinterpret_u64_s16(vget_high_s16(q9s16));
d20u64 = vreinterpret_u64_s16(vget_low_s16(q10s16));
d21u64 = vreinterpret_u64_s16(vget_high_s16(q10s16));
d22u64 = vreinterpret_u64_s16(vget_low_s16(q11s16));
d23u64 = vreinterpret_u64_s16(vget_high_s16(q11s16));
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
d28u64 = vreinterpret_u64_s16(vget_low_s16(q14s16));
d29u64 = vreinterpret_u64_s16(vget_high_s16(q14s16));
d30u64 = vreinterpret_u64_s16(vget_low_s16(q15s16));
d31u64 = vreinterpret_u64_s16(vget_high_s16(q15s16));
// store the data
output_stride >>= 1; // output_stride / 2, out is int16_t
vst1_u64((uint64_t *)out, d4u64);
out += output_stride;
vst1_u64((uint64_t *)out, d5u64);
out += output_stride;
vst1_u64((uint64_t *)out, d18u64);
out += output_stride;
vst1_u64((uint64_t *)out, d19u64);
out += output_stride;
vst1_u64((uint64_t *)out, d20u64);
out += output_stride;
vst1_u64((uint64_t *)out, d21u64);
out += output_stride;
vst1_u64((uint64_t *)out, d22u64);
out += output_stride;
vst1_u64((uint64_t *)out, d23u64);
out += output_stride;
vst1_u64((uint64_t *)out, d24u64);
out += output_stride;
vst1_u64((uint64_t *)out, d25u64);
out += output_stride;
vst1_u64((uint64_t *)out, d26u64);
out += output_stride;
vst1_u64((uint64_t *)out, d27u64);
out += output_stride;
vst1_u64((uint64_t *)out, d28u64);
out += output_stride;
vst1_u64((uint64_t *)out, d29u64);
out += output_stride;
vst1_u64((uint64_t *)out, d30u64);
out += output_stride;
vst1_u64((uint64_t *)out, d31u64);
}
void vpx_idct16x16_10_add_neon_pass2(int16_t *src, int16_t *out,
int16_t *pass1Output, int16_t skip_adding,
uint8_t *dest, int dest_stride) {
int16x4_t d0s16, d1s16, d2s16, d3s16, d4s16, d5s16, d6s16, d7s16;
int16x4_t d8s16, d9s16, d10s16, d11s16, d12s16, d13s16, d14s16, d15s16;
int16x4_t d20s16, d21s16, d22s16, d23s16;
int16x4_t d24s16, d25s16, d26s16, d27s16, d30s16, d31s16;
uint64x1_t d4u64, d5u64, d6u64, d7u64, d8u64, d9u64, d10u64, d11u64;
uint64x1_t d16u64, d17u64, d18u64, d19u64;
uint64x1_t d24u64, d25u64, d26u64, d27u64, d28u64, d29u64, d30u64, d31u64;
int16x8_t q0s16, q1s16, q2s16, q3s16, q4s16, q5s16, q6s16, q7s16;
int16x8_t q8s16, q9s16, q10s16, q11s16, q12s16, q13s16, q14s16, q15s16;
int32x4_t q0s32, q1s32, q2s32, q3s32, q4s32, q5s32, q6s32, q8s32, q9s32;
int32x4_t q10s32, q11s32, q12s32, q13s32;
int16x8x2_t q0x2s16;
(void)skip_adding;
(void)dest;
(void)dest_stride;
q0x2s16 = vld2q_s16(src);
q8s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q9s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q10s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q11s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q12s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q13s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q14s16 = q0x2s16.val[0];
src += 16;
q0x2s16 = vld2q_s16(src);
q15s16 = q0x2s16.val[0];
transpose_s16_8x8(&q8s16, &q9s16, &q10s16, &q11s16, &q12s16, &q13s16, &q14s16,
&q15s16);
// stage 3
q6s16 = vdupq_n_s16((int16_t)cospi_30_64 * 2);
q0s16 = vqrdmulhq_s16(q8s16, q6s16);
q6s16 = vdupq_n_s16((int16_t)cospi_2_64 * 2);
q7s16 = vqrdmulhq_s16(q8s16, q6s16);
q15s16 = vdupq_n_s16((int16_t)-cospi_26_64 * 2);
q14s16 = vdupq_n_s16((int16_t)cospi_6_64 * 2);
q3s16 = vqrdmulhq_s16(q9s16, q15s16);
q4s16 = vqrdmulhq_s16(q9s16, q14s16);
// stage 4
d0s16 = vget_low_s16(q0s16);
d1s16 = vget_high_s16(q0s16);
d6s16 = vget_low_s16(q3s16);
d7s16 = vget_high_s16(q3s16);
d8s16 = vget_low_s16(q4s16);
d9s16 = vget_high_s16(q4s16);
d14s16 = vget_low_s16(q7s16);
d15s16 = vget_high_s16(q7s16);
d30s16 = vdup_n_s16((int16_t)cospi_8_64);
d31s16 = vdup_n_s16((int16_t)cospi_24_64);
q12s32 = vmull_s16(d14s16, d31s16);
q5s32 = vmull_s16(d15s16, d31s16);
q2s32 = vmull_s16(d0s16, d31s16);
q11s32 = vmull_s16(d1s16, d31s16);
q12s32 = vmlsl_s16(q12s32, d0s16, d30s16);
q5s32 = vmlsl_s16(q5s32, d1s16, d30s16);
q2s32 = vmlal_s16(q2s32, d14s16, d30s16);
q11s32 = vmlal_s16(q11s32, d15s16, d30s16);
d2s16 = vqrshrn_n_s32(q12s32, 14);
d3s16 = vqrshrn_n_s32(q5s32, 14);
d12s16 = vqrshrn_n_s32(q2s32, 14);
d13s16 = vqrshrn_n_s32(q11s32, 14);
q1s16 = vcombine_s16(d2s16, d3s16);
q6s16 = vcombine_s16(d12s16, d13s16);
d30s16 = vdup_n_s16(-cospi_8_64);
q10s32 = vmull_s16(d8s16, d30s16);
q13s32 = vmull_s16(d9s16, d30s16);
q8s32 = vmull_s16(d6s16, d30s16);
q9s32 = vmull_s16(d7s16, d30s16);
q10s32 = vmlsl_s16(q10s32, d6s16, d31s16);
q13s32 = vmlsl_s16(q13s32, d7s16, d31s16);
q8s32 = vmlal_s16(q8s32, d8s16, d31s16);
q9s32 = vmlal_s16(q9s32, d9s16, d31s16);
d4s16 = vqrshrn_n_s32(q10s32, 14);
d5s16 = vqrshrn_n_s32(q13s32, 14);
d10s16 = vqrshrn_n_s32(q8s32, 14);
d11s16 = vqrshrn_n_s32(q9s32, 14);
q2s16 = vcombine_s16(d4s16, d5s16);
q5s16 = vcombine_s16(d10s16, d11s16);
// stage 5
q8s16 = vaddq_s16(q0s16, q3s16);
q9s16 = vaddq_s16(q1s16, q2s16);
q10s16 = vsubq_s16(q1s16, q2s16);
q11s16 = vsubq_s16(q0s16, q3s16);
q12s16 = vsubq_s16(q7s16, q4s16);
q13s16 = vsubq_s16(q6s16, q5s16);
q14s16 = vaddq_s16(q6s16, q5s16);
q15s16 = vaddq_s16(q7s16, q4s16);
// stage 6
d20s16 = vget_low_s16(q10s16);
d21s16 = vget_high_s16(q10s16);
d22s16 = vget_low_s16(q11s16);
d23s16 = vget_high_s16(q11s16);
d24s16 = vget_low_s16(q12s16);
d25s16 = vget_high_s16(q12s16);
d26s16 = vget_low_s16(q13s16);
d27s16 = vget_high_s16(q13s16);
d14s16 = vdup_n_s16((int16_t)cospi_16_64);
q3s32 = vmull_s16(d26s16, d14s16);
q4s32 = vmull_s16(d27s16, d14s16);
q0s32 = vmull_s16(d20s16, d14s16);
q1s32 = vmull_s16(d21s16, d14s16);
q5s32 = vsubq_s32(q3s32, q0s32);
q6s32 = vsubq_s32(q4s32, q1s32);
q0s32 = vaddq_s32(q3s32, q0s32);
q4s32 = vaddq_s32(q4s32, q1s32);
d4s16 = vqrshrn_n_s32(q5s32, 14);
d5s16 = vqrshrn_n_s32(q6s32, 14);
d10s16 = vqrshrn_n_s32(q0s32, 14);
d11s16 = vqrshrn_n_s32(q4s32, 14);
q2s16 = vcombine_s16(d4s16, d5s16);
q5s16 = vcombine_s16(d10s16, d11s16);
q0s32 = vmull_s16(d22s16, d14s16);
q1s32 = vmull_s16(d23s16, d14s16);
q13s32 = vmull_s16(d24s16, d14s16);
q6s32 = vmull_s16(d25s16, d14s16);
q10s32 = vsubq_s32(q13s32, q0s32);
q4s32 = vsubq_s32(q6s32, q1s32);
q13s32 = vaddq_s32(q13s32, q0s32);
q6s32 = vaddq_s32(q6s32, q1s32);
d6s16 = vqrshrn_n_s32(q10s32, 14);
d7s16 = vqrshrn_n_s32(q4s32, 14);
d8s16 = vqrshrn_n_s32(q13s32, 14);
d9s16 = vqrshrn_n_s32(q6s32, 14);
q3s16 = vcombine_s16(d6s16, d7s16);
q4s16 = vcombine_s16(d8s16, d9s16);
// stage 7
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q0s16, q15s16);
q13s16 = vaddq_s16(q1s16, q14s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q14s16 = vsubq_s16(q1s16, q14s16);
q15s16 = vsubq_s16(q0s16, q15s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q10s16, q5s16);
q13s16 = vaddq_s16(q11s16, q4s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q4s16 = vsubq_s16(q11s16, q4s16);
q5s16 = vsubq_s16(q10s16, q5s16);
q0s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q1s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q12s16 = vaddq_s16(q0s16, q3s16);
q13s16 = vaddq_s16(q1s16, q2s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q2s16 = vsubq_s16(q1s16, q2s16);
q3s16 = vsubq_s16(q0s16, q3s16);
q10s16 = vld1q_s16(pass1Output);
pass1Output += 8;
q11s16 = vld1q_s16(pass1Output);
q12s16 = vaddq_s16(q10s16, q9s16);
q13s16 = vaddq_s16(q11s16, q8s16);
d24u64 = vreinterpret_u64_s16(vget_low_s16(q12s16));
d25u64 = vreinterpret_u64_s16(vget_high_s16(q12s16));
d26u64 = vreinterpret_u64_s16(vget_low_s16(q13s16));
d27u64 = vreinterpret_u64_s16(vget_high_s16(q13s16));
vst1_u64((uint64_t *)out, d24u64);
out += 4;
vst1_u64((uint64_t *)out, d25u64);
out += 12;
vst1_u64((uint64_t *)out, d26u64);
out += 4;
vst1_u64((uint64_t *)out, d27u64);
out += 12;
q8s16 = vsubq_s16(q11s16, q8s16);
q9s16 = vsubq_s16(q10s16, q9s16);
d4u64 = vreinterpret_u64_s16(vget_low_s16(q2s16));
d5u64 = vreinterpret_u64_s16(vget_high_s16(q2s16));
d6u64 = vreinterpret_u64_s16(vget_low_s16(q3s16));
d7u64 = vreinterpret_u64_s16(vget_high_s16(q3s16));
d8u64 = vreinterpret_u64_s16(vget_low_s16(q4s16));
d9u64 = vreinterpret_u64_s16(vget_high_s16(q4s16));
d10u64 = vreinterpret_u64_s16(vget_low_s16(q5s16));
d11u64 = vreinterpret_u64_s16(vget_high_s16(q5s16));
d16u64 = vreinterpret_u64_s16(vget_low_s16(q8s16));
d17u64 = vreinterpret_u64_s16(vget_high_s16(q8s16));
d18u64 = vreinterpret_u64_s16(vget_low_s16(q9s16));
d19u64 = vreinterpret_u64_s16(vget_high_s16(q9s16));
d28u64 = vreinterpret_u64_s16(vget_low_s16(q14s16));
d29u64 = vreinterpret_u64_s16(vget_high_s16(q14s16));
d30u64 = vreinterpret_u64_s16(vget_low_s16(q15s16));
d31u64 = vreinterpret_u64_s16(vget_high_s16(q15s16));
vst1_u64((uint64_t *)out, d16u64);
out += 4;
vst1_u64((uint64_t *)out, d17u64);
out += 12;
vst1_u64((uint64_t *)out, d18u64);
out += 4;
vst1_u64((uint64_t *)out, d19u64);
out += 12;
vst1_u64((uint64_t *)out, d4u64);
out += 4;
vst1_u64((uint64_t *)out, d5u64);
out += 12;
vst1_u64((uint64_t *)out, d6u64);
out += 4;
vst1_u64((uint64_t *)out, d7u64);
out += 12;
vst1_u64((uint64_t *)out, d8u64);
out += 4;
vst1_u64((uint64_t *)out, d9u64);
out += 12;
vst1_u64((uint64_t *)out, d10u64);
out += 4;
vst1_u64((uint64_t *)out, d11u64);
out += 12;
vst1_u64((uint64_t *)out, d28u64);
out += 4;
vst1_u64((uint64_t *)out, d29u64);
out += 12;
vst1_u64((uint64_t *)out, d30u64);
out += 4;
vst1_u64((uint64_t *)out, d31u64);
}