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aomedia / aom / b7c05bdcd536963338f093597e671a2669a36a8d / . / av1 / encoder / arm / av1_fwd_txfm2d_neon.c
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/*
* Copyright (c) 2020, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <arm_neon.h>
#include <assert.h>
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#include "aom_dsp/txfm_common.h"
#include "aom_ports/mem.h"
#include "av1/common/av1_txfm.h"
#include "av1/encoder/av1_fwd_txfm1d_cfg.h"
#include "config/aom_config.h"
#include "config/av1_rtcd.h"
#include "shift_neon.h"
#include "txfm_neon.h"
#define TXFM_COS_BIT_MAX 13
// A note on butterfly helper naming:
//
// butterfly_[input_ty]_[acc_ty]_[input_num]_[weight_num]_[weight_neg]_neon
// e.g. butterfly_s32_s32_x4_0231_neon
// | | | ^ Weights are applied as indices 0, 2, 3, 1
// | | | (see more detail below)
// | | ^ (int32)x4 input/output parameters
// | ^ 32-bit accumulators internally
// ^ 32-bit input/output parameters
//
// Weights are stored as 4-tuples in Q2.13 format as (w0, 1-w0, -w0, w0-1) to
// avoid needing separate negation instructions. This is represented in the
// helper naming by referring to the lane index in the loaded tuple that each
// multiply is performed with:
//
// in0 in1
// /----------
// out0 | w0 w1 ==> out0 = in0 * w0 + in1 * w1
// out1 | w2 w3 ==> out1 = in0 * w2 + in1 * w3
//
// So for indices 0331 from the earlier example, we end up with:
//
// in0 in1
// /------------------
// out0 | (lane 0) (lane 2) ==> out0 = in0 * w0 + in1 * -w0
// out1 | (lane 3) (lane 1) ==> out1 = in0 * (w0-1) + in1 * (1-w0)
static AOM_FORCE_INLINE void butterfly_s32_s32_x4_0112_neon(
const int16x4_t w0101_s16, const int32x4_t in0, const int32x4_t in1,
int32x4_t *out0, int32x4_t *out1) {
int32x4_t w0101 = vmovl_s16(w0101_s16);
int32x4_t o0 = vmulq_lane_s32(in0, vget_low_s32(w0101), 0);
o0 = vmlaq_lane_s32(o0, in1, vget_low_s32(w0101), 1);
int32x4_t o1 = vmulq_lane_s32(in0, vget_low_s32(w0101), 1);
o1 = vmlaq_lane_s32(o1, in1, vget_high_s32(w0101), 0);
*out0 = vrshrq_n_s32(o0, TXFM_COS_BIT_MAX);
*out1 = vrshrq_n_s32(o1, TXFM_COS_BIT_MAX);
}
static AOM_FORCE_INLINE void butterfly_s32_s32_x4_0332_neon(
const int16x4_t w0101_s16, const int32x4_t in0, const int32x4_t in1,
int32x4_t *out0, int32x4_t *out1) {
int32x4_t w0101 = vmovl_s16(w0101_s16);
int32x4_t o0 = vmulq_lane_s32(in0, vget_low_s32(w0101), 0);
o0 = vmlaq_lane_s32(o0, in1, vget_high_s32(w0101), 1);
int32x4_t o1 = vmulq_lane_s32(in0, vget_high_s32(w0101), 1);
o1 = vmlaq_lane_s32(o1, in1, vget_high_s32(w0101), 0);
*out0 = vrshrq_n_s32(o0, TXFM_COS_BIT_MAX);
*out1 = vrshrq_n_s32(o1, TXFM_COS_BIT_MAX);
}
static AOM_FORCE_INLINE void butterfly_s32_s32_x4_1003_neon(
const int16x4_t w0101_s16, const int32x4_t in0, const int32x4_t in1,
int32x4_t *out0, int32x4_t *out1) {
int32x4_t w0101 = vmovl_s16(w0101_s16);
int32x4_t o0 = vmulq_lane_s32(in0, vget_low_s32(w0101), 1);
o0 = vmlaq_lane_s32(o0, in1, vget_low_s32(w0101), 0);
int32x4_t o1 = vmulq_lane_s32(in0, vget_low_s32(w0101), 0);
o1 = vmlaq_lane_s32(o1, in1, vget_high_s32(w0101), 1);
*out0 = vrshrq_n_s32(o0, TXFM_COS_BIT_MAX);
*out1 = vrshrq_n_s32(o1, TXFM_COS_BIT_MAX);
}
static AOM_FORCE_INLINE void butterfly_s32_s32_x4_1223_neon(
const int16x4_t w0101_s16, const int32x4_t in0, const int32x4_t in1,
int32x4_t *out0, int32x4_t *out1) {
int32x4_t w0101 = vmovl_s16(w0101_s16);
int32x4_t o0 = vmulq_lane_s32(in0, vget_low_s32(w0101), 1);
o0 = vmlaq_lane_s32(o0, in1, vget_high_s32(w0101), 0);
int32x4_t o1 = vmulq_lane_s32(in0, vget_high_s32(w0101), 0);
o1 = vmlaq_lane_s32(o1, in1, vget_high_s32(w0101), 1);
*out0 = vrshrq_n_s32(o0, TXFM_COS_BIT_MAX);
*out1 = vrshrq_n_s32(o1, TXFM_COS_BIT_MAX);
}
#define butterfly_s16_s32_x4_neon(wvec, lane0, lane1, lane2, lane3, in0, in1, \
out0, out1) \
do { \
int32x4_t u0 = vmull_lane_s16(in0, wvec, lane0); \
u0 = vmlal_lane_s16(u0, in1, wvec, lane1); \
int32x4_t v0 = vmull_lane_s16(in0, wvec, lane2); \
v0 = vmlal_lane_s16(v0, in1, wvec, lane3); \
*out0 = vqrshrn_n_s32(u0, TXFM_COS_BIT_MAX); \
*out1 = vqrshrn_n_s32(v0, TXFM_COS_BIT_MAX); \
} while (0)
static AOM_FORCE_INLINE void butterfly_s16_s32_x4_0112_neon(
const int16x4_t w0101, const int16x4_t in0, const int16x4_t in1,
int16x4_t *out0, int16x4_t *out1) {
butterfly_s16_s32_x4_neon(w0101, 0, 1, 1, 2, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x4_0332_neon(
const int16x4_t w0101, const int16x4_t in0, const int16x4_t in1,
int16x4_t *out0, int16x4_t *out1) {
butterfly_s16_s32_x4_neon(w0101, 0, 3, 3, 2, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x4_1003_neon(
const int16x4_t w0101, const int16x4_t in0, const int16x4_t in1,
int16x4_t *out0, int16x4_t *out1) {
butterfly_s16_s32_x4_neon(w0101, 1, 0, 0, 3, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x4_1223_neon(
const int16x4_t w0101, const int16x4_t in0, const int16x4_t in1,
int16x4_t *out0, int16x4_t *out1) {
butterfly_s16_s32_x4_neon(w0101, 1, 2, 2, 3, in0, in1, out0, out1);
}
#define butterfly_s16_s32_x8_neon(wvec, lane0, lane1, lane2, lane3, in0, in1, \
out0, out1) \
do { \
int32x4_t u0 = vmull_lane_s16(vget_low_s16(in0), wvec, lane0); \
u0 = vmlal_lane_s16(u0, vget_low_s16(in1), wvec, lane1); \
int32x4_t u1 = vmull_lane_s16(vget_high_s16(in0), wvec, lane0); \
u1 = vmlal_lane_s16(u1, vget_high_s16(in1), wvec, lane1); \
int32x4_t v0 = vmull_lane_s16(vget_low_s16(in0), wvec, lane2); \
v0 = vmlal_lane_s16(v0, vget_low_s16(in1), wvec, lane3); \
int32x4_t v1 = vmull_lane_s16(vget_high_s16(in0), wvec, lane2); \
v1 = vmlal_lane_s16(v1, vget_high_s16(in1), wvec, lane3); \
const int16x4_t c0 = vrshrn_n_s32(u0, TXFM_COS_BIT_MAX); \
const int16x4_t c1 = vrshrn_n_s32(u1, TXFM_COS_BIT_MAX); \
const int16x4_t d0 = vrshrn_n_s32(v0, TXFM_COS_BIT_MAX); \
const int16x4_t d1 = vrshrn_n_s32(v1, TXFM_COS_BIT_MAX); \
*out0 = vcombine_s16(c0, c1); \
*out1 = vcombine_s16(d0, d1); \
} while (0)
static AOM_FORCE_INLINE void butterfly_s16_s32_x8_0112_neon(
const int16x4_t w0101, const int16x8_t in0, const int16x8_t in1,
int16x8_t *out0, int16x8_t *out1) {
butterfly_s16_s32_x8_neon(w0101, 0, 1, 1, 2, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x8_0332_neon(
const int16x4_t w0101, const int16x8_t in0, const int16x8_t in1,
int16x8_t *out0, int16x8_t *out1) {
butterfly_s16_s32_x8_neon(w0101, 0, 3, 3, 2, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x8_1003_neon(
const int16x4_t w0101, const int16x8_t in0, const int16x8_t in1,
int16x8_t *out0, int16x8_t *out1) {
butterfly_s16_s32_x8_neon(w0101, 1, 0, 0, 3, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void butterfly_s16_s32_x8_1223_neon(
const int16x4_t w0101, const int16x8_t in0, const int16x8_t in1,
int16x8_t *out0, int16x8_t *out1) {
butterfly_s16_s32_x8_neon(w0101, 1, 2, 2, 3, in0, in1, out0, out1);
}
static AOM_FORCE_INLINE void flip_buf_4_neon(int16x4_t *in, int16x4_t *out,
int size) {
for (int i = 0; i < size; ++i) {
out[size - i - 1] = in[i];
}
}
static AOM_FORCE_INLINE void flip_buf_8_neon(int16x8_t *in, int16x8_t *out,
int size) {
for (int i = 0; i < size; ++i) {
out[size - i - 1] = in[i];
}
}
static AOM_FORCE_INLINE void store_buffer_interleaved_s32_x8(
int32_t *const out, const int32x4_t *const in1, const int32x4_t *const in2,
const int stride, const int out_size) {
for (int i = 0; i < out_size; ++i) {
vst1q_s32(out + stride * i, in1[i]);
vst1q_s32(out + stride * i + 4, in2[i]);
}
}
static AOM_FORCE_INLINE void load_buffer_s16_x4(const int16_t *in,
const int stride,
int16x4_t *const out,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
out[i] = vld1_s16(in);
in += stride;
}
}
static AOM_FORCE_INLINE void load_buffer_s16_x8(const int16_t *in, int stride,
int16x8_t *out, int out_size) {
for (int i = 0; i < out_size; ++i) {
out[i] = vld1q_s16(in + i * stride);
}
}
static AOM_FORCE_INLINE void store_buffer_s16_x4(const int16x4_t *const in,
int32_t *const out,
const int stride,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
vst1q_s32(out + i * stride, vmovl_s16(in[i]));
}
}
static AOM_FORCE_INLINE void store_buffer_s16_x8(const int16x8_t *const in,
int32_t *const out,
const int stride,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
vst1q_s32(out + i * stride + 0, vmovl_s16(vget_low_s16(in[i])));
vst1q_s32(out + i * stride + 4, vmovl_s16(vget_high_s16(in[i])));
}
}
// A note on naming:
// round_shift_[sqrt2]_s16_s32_4x1_neon(...)
// | | | ^ 1 => a single vector
// | | | n => an array of vectors
// | | | ^ input/output vector element count
// | | ^ output type
// | ^ input type
// ^ multiplicand and shift identifier
static AOM_FORCE_INLINE int16x4_t
round_shift_sqrt2_s16_s16_4x1_neon(int16x4_t a) {
return vqrshrn_n_s32(vmull_n_s16(a, NewSqrt2), NewSqrt2Bits);
}
static AOM_FORCE_INLINE int16x8_t
round_shift_sqrt2_s16_s16_8x1_neon(int16x8_t a) {
return vcombine_s16(round_shift_sqrt2_s16_s16_4x1_neon(vget_low_s16(a)),
round_shift_sqrt2_s16_s16_4x1_neon(vget_high_s16(a)));
}
static AOM_FORCE_INLINE int16x4_t
round_shift_2sqrt2_s16_s16_4x1_neon(int16x4_t a) {
return vqrshrn_n_s32(vmull_n_s16(a, 2 * NewSqrt2), NewSqrt2Bits);
}
static AOM_FORCE_INLINE int16x8_t
round_shift_2sqrt2_s16_s16_8x1_neon(int16x8_t a) {
return vcombine_s16(round_shift_2sqrt2_s16_s16_4x1_neon(vget_low_s16(a)),
round_shift_2sqrt2_s16_s16_4x1_neon(vget_high_s16(a)));
}
static AOM_FORCE_INLINE int32x4_t
round_shift_sqrt2_s16_s32_4x1_neon(int16x4_t a) {
return vrshrq_n_s32(vmull_n_s16(a, NewSqrt2), NewSqrt2Bits);
}
static AOM_FORCE_INLINE int32x4_t
round_shift_sqrt2_s32_s32_4x1_neon(int32x4_t a) {
return vrshrq_n_s32(vmulq_n_s32(a, NewSqrt2), NewSqrt2Bits);
}
#define ROUND_SHIFT_SQRT_LOOP_HELPER(name, type0, type1, fn) \
static AOM_FORCE_INLINE void name(const type0 *in, type1 *out, int size) { \
for (int i = 0; i < size; ++i) { \
out[i] = fn(in[i]); \
} \
}
ROUND_SHIFT_SQRT_LOOP_HELPER(round_shift_sqrt2_s32_s32_4xn_neon, int32x4_t,
int32x4_t, round_shift_sqrt2_s32_s32_4x1_neon)
ROUND_SHIFT_SQRT_LOOP_HELPER(round_shift_sqrt2_s16_s16_4xn_neon, int16x4_t,
int16x4_t, round_shift_sqrt2_s16_s16_4x1_neon)
ROUND_SHIFT_SQRT_LOOP_HELPER(round_shift_sqrt2_s16_s16_8xn_neon, int16x8_t,
int16x8_t, round_shift_sqrt2_s16_s16_8x1_neon)
ROUND_SHIFT_SQRT_LOOP_HELPER(round_shift_2sqrt2_s16_s16_4xn_neon, int16x4_t,
int16x4_t, round_shift_2sqrt2_s16_s16_4x1_neon)
ROUND_SHIFT_SQRT_LOOP_HELPER(round_shift_2sqrt2_s16_s16_8xn_neon, int16x8_t,
int16x8_t, round_shift_2sqrt2_s16_s16_8x1_neon)
static AOM_FORCE_INLINE void store_rect_buffer_s16_x4(const int16x4_t *const in,
int32_t *const out,
const int stride,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
vst1q_s32(out + i * stride, round_shift_sqrt2_s16_s32_4x1_neon(in[i]));
}
}
static AOM_FORCE_INLINE void store_rect_buffer_s16_x8(const int16x8_t *const in,
int32_t *const out,
const int stride,
const int out_size) {
for (int i = 0; i < out_size; ++i) {
vst1q_s32(out + i * stride + 0,
round_shift_sqrt2_s16_s32_4x1_neon(vget_low_s16(in[i])));
vst1q_s32(out + i * stride + 4,
round_shift_sqrt2_s16_s32_4x1_neon(vget_high_s16(in[i])));
}
}
static AOM_FORCE_INLINE void fadst4x4_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
int32x4_t u[6], v[6];
const int16x4_t sinpi = vld1_s16(sinpi_arr_q13(cos_bit));
const int16x4_t u01 = vqadd_s16(input[0], input[1]);
v[5] = vmull_lane_s16(input[2], sinpi, 2);
v[0] = vmull_lane_s16(input[1], sinpi, 1);
v[0] = vmlal_lane_s16(v[0], input[0], sinpi, 0);
v[1] = vmlal_lane_s16(v[5], input[3], sinpi, 3);
v[2] = vmull_lane_s16(u01, sinpi, 2);
v[3] = vmull_lane_s16(input[0], sinpi, 3);
v[3] = vmlsl_lane_s16(v[3], input[1], sinpi, 0);
v[4] = vmlsl_lane_s16(v[5], input[3], sinpi, 1);
u[0] = vaddq_s32(v[0], v[1]);
u[1] = vmlsl_lane_s16(v[2], input[3], sinpi, 2);
u[2] = vsubq_s32(v[3], v[4]);
u[3] = vsubq_s32(u[2], u[0]);
u[3] = vmlaq_n_s32(u[3], v[5], 3);
output[0] = vrshrn_n_s32(u[0], TXFM_COS_BIT_MAX);
output[1] = vrshrn_n_s32(u[1], TXFM_COS_BIT_MAX);
output[2] = vrshrn_n_s32(u[2], TXFM_COS_BIT_MAX);
output[3] = vrshrn_n_s32(u[3], TXFM_COS_BIT_MAX);
}
static AOM_FORCE_INLINE void fadst4x8_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
// stage 1-2
int16x4_t x2[8];
butterfly_s16_s32_x4_0332_neon(cospi32, input[4], input[3], &x2[2], &x2[3]);
butterfly_s16_s32_x4_0112_neon(cospi32, input[2], input[5], &x2[7], &x2[6]);
// stage 3
int16x4_t x3[8];
x3[0] = vqadd_s16(input[0], x2[2]);
x3[1] = vqsub_s16(x2[3], input[7]);
x3[2] = vqsub_s16(input[0], x2[2]);
x3[3] = vqadd_s16(input[7], x2[3]);
x3[4] = vqsub_s16(x2[6], input[1]);
x3[5] = vqadd_s16(input[6], x2[7]);
x3[6] = vqadd_s16(input[1], x2[6]);
x3[7] = vqsub_s16(input[6], x2[7]);
// stage 4
int16x4_t x4[8];
butterfly_s16_s32_x4_0112_neon(cospi16, x3[4], x3[5], &x4[4], &x4[5]);
butterfly_s16_s32_x4_0112_neon(cospi16, x3[7], x3[6], &x4[6], &x4[7]);
// stage 5
int16x4_t x5[8];
x5[0] = vqadd_s16(x3[0], x4[4]);
x5[1] = vqadd_s16(x3[1], x4[5]);
x5[2] = vqadd_s16(x3[2], x4[6]);
x5[3] = vqsub_s16(x4[7], x3[3]);
x5[4] = vqsub_s16(x3[0], x4[4]);
x5[5] = vqsub_s16(x3[1], x4[5]);
x5[6] = vqsub_s16(x3[2], x4[6]);
x5[7] = vqadd_s16(x3[3], x4[7]);
// stage 6-7
butterfly_s16_s32_x4_0112_neon(cospi4, x5[0], x5[1], &output[7], &output[0]);
butterfly_s16_s32_x4_0112_neon(cospi20, x5[2], x5[3], &output[5], &output[2]);
butterfly_s16_s32_x4_1003_neon(cospi28, x5[4], x5[5], &output[3], &output[4]);
butterfly_s16_s32_x4_0112_neon(cospi12, x5[6], x5[7], &output[6], &output[1]);
}
static AOM_FORCE_INLINE void fadst8x4_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
int32x4_t u_lo[4], u_hi[4];
const int16x4_t sinpi = vld1_s16(sinpi_arr_q13(cos_bit));
const int16x8_t u01 = vqaddq_s16(input[0], input[1]);
u_lo[0] = vmull_lane_s16(vget_low_s16(input[1]), sinpi, 1);
u_hi[0] = vmull_lane_s16(vget_high_s16(input[1]), sinpi, 1);
u_lo[0] = vmlal_lane_s16(u_lo[0], vget_low_s16(input[0]), sinpi, 0);
u_hi[0] = vmlal_lane_s16(u_hi[0], vget_high_s16(input[0]), sinpi, 0);
u_lo[0] = vmlal_lane_s16(u_lo[0], vget_low_s16(input[3]), sinpi, 3);
u_hi[0] = vmlal_lane_s16(u_hi[0], vget_high_s16(input[3]), sinpi, 3);
u_lo[0] = vmlal_lane_s16(u_lo[0], vget_low_s16(input[2]), sinpi, 2);
u_hi[0] = vmlal_lane_s16(u_hi[0], vget_high_s16(input[2]), sinpi, 2);
u_lo[1] = vmull_lane_s16(vget_low_s16(u01), sinpi, 2);
u_hi[1] = vmull_lane_s16(vget_high_s16(u01), sinpi, 2);
u_lo[2] = vmull_lane_s16(vget_low_s16(input[0]), sinpi, 3);
u_hi[2] = vmull_lane_s16(vget_high_s16(input[0]), sinpi, 3);
u_lo[2] = vmlsl_lane_s16(u_lo[2], vget_low_s16(input[1]), sinpi, 0);
u_hi[2] = vmlsl_lane_s16(u_hi[2], vget_high_s16(input[1]), sinpi, 0);
u_lo[2] = vmlal_lane_s16(u_lo[2], vget_low_s16(input[3]), sinpi, 1);
u_hi[2] = vmlal_lane_s16(u_hi[2], vget_high_s16(input[3]), sinpi, 1);
u_lo[2] = vmlsl_lane_s16(u_lo[2], vget_low_s16(input[2]), sinpi, 2);
u_hi[2] = vmlsl_lane_s16(u_hi[2], vget_high_s16(input[2]), sinpi, 2);
u_lo[1] = vmlsl_lane_s16(u_lo[1], vget_low_s16(input[3]), sinpi, 2);
u_hi[1] = vmlsl_lane_s16(u_hi[1], vget_high_s16(input[3]), sinpi, 2);
u_lo[3] = vsubq_s32(u_lo[2], u_lo[0]);
u_hi[3] = vsubq_s32(u_hi[2], u_hi[0]);
const int16x4_t sinpix3 = vmul_n_s16(sinpi, 3);
u_lo[3] = vmlal_lane_s16(u_lo[3], vget_low_s16(input[2]), sinpix3, 2);
u_hi[3] = vmlal_lane_s16(u_hi[3], vget_high_s16(input[2]), sinpix3, 2);
output[0] = vcombine_s16(vrshrn_n_s32(u_lo[0], TXFM_COS_BIT_MAX),
vrshrn_n_s32(u_hi[0], TXFM_COS_BIT_MAX));
output[1] = vcombine_s16(vrshrn_n_s32(u_lo[1], TXFM_COS_BIT_MAX),
vrshrn_n_s32(u_hi[1], TXFM_COS_BIT_MAX));
output[2] = vcombine_s16(vrshrn_n_s32(u_lo[2], TXFM_COS_BIT_MAX),
vrshrn_n_s32(u_hi[2], TXFM_COS_BIT_MAX));
output[3] = vcombine_s16(vrshrn_n_s32(u_lo[3], TXFM_COS_BIT_MAX),
vrshrn_n_s32(u_hi[3], TXFM_COS_BIT_MAX));
}
static AOM_FORCE_INLINE void fdct4x4_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x4_t cospi16 = vld1_s16(&cospi[4 * 1]);
int16x4_t in12a = vadd_s16(input[1], input[2]);
int16x4_t in12s = vsub_s16(input[1], input[2]);
int16x4_t in03a = vadd_s16(input[0], input[3]);
int16x4_t in03s = vsub_s16(input[0], input[3]);
int32x4_t u0ad1 = vmull_n_s16(in12a, cospi[4 * 0]);
int32x4_t u0ad2 = vmull_n_s16(in03a, cospi[4 * 0]);
int32x4_t u[4];
u[0] = vaddq_s32(u0ad1, u0ad2);
u[1] = vsubq_s32(u0ad2, u0ad1);
u[2] = vmull_lane_s16(in12s, cospi16, 1);
u[2] = vmlal_lane_s16(u[2], in03s, cospi16, 0);
u[3] = vmull_lane_s16(in03s, cospi16, 1);
u[3] = vmlsl_lane_s16(u[3], in12s, cospi16, 0);
output[0] = vrshrn_n_s32(u[0], TXFM_COS_BIT_MAX);
output[1] = vrshrn_n_s32(u[2], TXFM_COS_BIT_MAX);
output[2] = vrshrn_n_s32(u[1], TXFM_COS_BIT_MAX);
output[3] = vrshrn_n_s32(u[3], TXFM_COS_BIT_MAX);
}
// Butterfly pre-processing:
// e.g. n=4:
// out[0] = in[0] + in[3]
// out[1] = in[1] + in[2]
// out[2] = in[1] - in[2]
// out[3] = in[0] - in[3]
static AOM_FORCE_INLINE void butterfly_dct_pre_s16_x4(const int16x4_t *input,
int16x4_t *output,
int n) {
for (int i = 0; i < n / 2; ++i) {
output[i] = vqadd_s16(input[i], input[n - i - 1]);
}
for (int i = 0; i < n / 2; ++i) {
output[n / 2 + i] = vqsub_s16(input[n / 2 - i - 1], input[n / 2 + i]);
}
}
static AOM_FORCE_INLINE void butterfly_dct_pre_s16_x8(const int16x8_t *input,
int16x8_t *output,
int n) {
for (int i = 0; i < n / 2; ++i) {
output[i] = vqaddq_s16(input[i], input[n - i - 1]);
}
for (int i = 0; i < n / 2; ++i) {
output[n / 2 + i] = vqsubq_s16(input[n / 2 - i - 1], input[n / 2 + i]);
}
}
static AOM_FORCE_INLINE void butterfly_dct_pre_s32_x4(const int32x4_t *input,
int32x4_t *output,
int n) {
for (int i = 0; i < n / 2; ++i) {
output[i] = vqaddq_s32(input[i], input[n - i - 1]);
}
for (int i = 0; i < n / 2; ++i) {
output[n / 2 + i] = vqsubq_s32(input[n / 2 - i - 1], input[n / 2 + i]);
}
}
// Butterfly post-processing:
// e.g. n=8:
// out[0] = in0[0] + in1[3];
// out[1] = in0[1] + in1[2];
// out[2] = in0[1] - in1[2];
// out[3] = in0[0] - in1[3];
// out[4] = in0[7] - in1[4];
// out[5] = in0[6] - in1[5];
// out[6] = in0[6] + in1[5];
// out[7] = in0[7] + in1[4];
static AOM_FORCE_INLINE void butterfly_dct_post_s16_x4(const int16x4_t *in0,
const int16x4_t *in1,
int16x4_t *output,
int n) {
for (int i = 0; i < n / 4; ++i) {
output[i] = vqadd_s16(in0[i], in1[n / 2 - i - 1]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 4 + i] = vqsub_s16(in0[n / 4 - i - 1], in1[n / 4 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 2 + i] = vqsub_s16(in0[n - i - 1], in1[n / 2 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[(3 * n) / 4 + i] =
vqadd_s16(in0[(3 * n) / 4 + i], in1[(3 * n) / 4 - i - 1]);
}
}
static AOM_FORCE_INLINE void butterfly_dct_post_s16_x8(const int16x8_t *in0,
const int16x8_t *in1,
int16x8_t *output,
int n) {
for (int i = 0; i < n / 4; ++i) {
output[i] = vqaddq_s16(in0[i], in1[n / 2 - i - 1]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 4 + i] = vqsubq_s16(in0[n / 4 - i - 1], in1[n / 4 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 2 + i] = vqsubq_s16(in0[n - i - 1], in1[n / 2 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[(3 * n) / 4 + i] =
vqaddq_s16(in0[(3 * n) / 4 + i], in1[(3 * n) / 4 - i - 1]);
}
}
static AOM_FORCE_INLINE void butterfly_dct_post_s32_x4(const int32x4_t *in0,
const int32x4_t *in1,
int32x4_t *output,
int n) {
for (int i = 0; i < n / 4; ++i) {
output[i] = vqaddq_s32(in0[i], in1[n / 2 - i - 1]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 4 + i] = vqsubq_s32(in0[n / 4 - i - 1], in1[n / 4 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[n / 2 + i] = vqsubq_s32(in0[n - i - 1], in1[n / 2 + i]);
}
for (int i = 0; i < n / 4; ++i) {
output[(3 * n) / 4 + i] =
vqaddq_s32(in0[(3 * n) / 4 + i], in1[(3 * n) / 4 - i - 1]);
}
}
static AOM_FORCE_INLINE void fdct8x4_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
// stage 1
int16x8_t x1[4];
butterfly_dct_pre_s16_x8(input, x1, 4);
// stage 2
int16x8_t x2[4];
butterfly_s16_s32_x8_0112_neon(cospi32, x1[0], x1[1], &x2[0], &x2[1]);
butterfly_s16_s32_x8_0112_neon(cospi16, x1[3], x1[2], &x2[2], &x2[3]);
// stage 3
output[0] = x2[0];
output[1] = x2[2];
output[2] = x2[1];
output[3] = x2[3];
}
static AOM_FORCE_INLINE void fdct4x8_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
// stage 1
int16x4_t x1[8];
butterfly_dct_pre_s16_x4(input, x1, 8);
// stage 2
int16x4_t x2[8];
butterfly_dct_pre_s16_x4(x1, x2, 4);
butterfly_s16_s32_x4_0112_neon(cospi32, x1[6], x1[5], &x2[6], &x2[5]);
// stage 3
int16x4_t x3[8];
butterfly_s16_s32_x4_0112_neon(cospi32, x2[0], x2[1], &output[0], &output[4]);
butterfly_s16_s32_x4_0112_neon(cospi16, x2[3], x2[2], &output[2], &output[6]);
butterfly_dct_post_s16_x4(x1 + 4, x2 + 4, x3 + 4, 4);
// stage 4-5
butterfly_s16_s32_x4_0112_neon(cospi8, x3[7], x3[4], &output[1], &output[7]);
butterfly_s16_s32_x4_1003_neon(cospi24, x3[6], x3[5], &output[5], &output[3]);
}
static AOM_FORCE_INLINE void fdct8x8_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
// stage 1
int16x8_t x1[8];
butterfly_dct_pre_s16_x8(input, x1, 8);
// stage 2
int16x8_t x2[8];
butterfly_dct_pre_s16_x8(x1, x2, 4);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[6], x1[5], &x2[6], &x2[5]);
// stage 3
int16x8_t x3[8];
butterfly_s16_s32_x8_0112_neon(cospi32, x2[0], x2[1], &output[0], &output[4]);
butterfly_s16_s32_x8_0112_neon(cospi16, x2[3], x2[2], &output[2], &output[6]);
butterfly_dct_post_s16_x8(x1 + 4, x2 + 4, x3 + 4, 4);
// stage 4-5
butterfly_s16_s32_x8_0112_neon(cospi8, x3[7], x3[4], &output[1], &output[7]);
butterfly_s16_s32_x8_1003_neon(cospi24, x3[6], x3[5], &output[5], &output[3]);
}
static AOM_FORCE_INLINE void fdct4x16_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
// stage 1
int16x4_t x1[16];
butterfly_dct_pre_s16_x4(input, x1, 16);
// stage 2
int16x4_t x2[16];
butterfly_dct_pre_s16_x4(x1, x2, 8);
butterfly_s16_s32_x4_0112_neon(cospi32, x1[13], x1[10], &x2[13], &x2[10]);
butterfly_s16_s32_x4_0112_neon(cospi32, x1[12], x1[11], &x2[12], &x2[11]);
// stage 3
int16x4_t x3[16];
butterfly_dct_pre_s16_x4(x2, x3, 4);
butterfly_s16_s32_x4_0112_neon(cospi32, x2[6], x2[5], &x3[6], &x3[5]);
butterfly_dct_post_s16_x4(x1 + 8, x2 + 8, x3 + 8, 8);
// stage 4
int16x4_t x4[16];
butterfly_s16_s32_x4_0112_neon(cospi32, x3[0], x3[1], &output[0], &output[8]);
butterfly_s16_s32_x4_0112_neon(cospi16, x3[3], x3[2], &output[4],
&output[12]);
butterfly_dct_post_s16_x4(x2 + 4, x3 + 4, x4 + 4, 4);
butterfly_s16_s32_x4_0112_neon(cospi16, x3[14], x3[9], &x4[14], &x4[9]);
butterfly_s16_s32_x4_1223_neon(cospi16, x3[13], x3[10], &x4[13], &x4[10]);
// stage 5
int16x4_t x5[16];
butterfly_s16_s32_x4_0112_neon(cospi8, x4[7], x4[4], &output[2], &output[14]);
butterfly_s16_s32_x4_1003_neon(cospi24, x4[6], x4[5], &output[10],
&output[6]);
butterfly_dct_post_s16_x4(x3 + 8, x4 + 8, x5 + 8, 4);
butterfly_dct_post_s16_x4(x3 + 12, x4 + 12, x5 + 12, 4);
// stage 6-7
butterfly_s16_s32_x4_0112_neon(cospi4, x5[15], x5[8], &output[1],
&output[15]);
butterfly_s16_s32_x4_1003_neon(cospi28, x5[14], x5[9], &output[9],
&output[7]);
butterfly_s16_s32_x4_0112_neon(cospi20, x5[13], x5[10], &output[5],
&output[11]);
butterfly_s16_s32_x4_1003_neon(cospi12, x5[12], x5[11], &output[13],
&output[3]);
}
static AOM_FORCE_INLINE void fdct8x16_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
// stage 1
int16x8_t x1[16];
butterfly_dct_pre_s16_x8(input, x1, 16);
// stage 2
int16x8_t x2[16];
butterfly_dct_pre_s16_x8(x1, x2, 8);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[13], x1[10], &x2[13], &x2[10]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[12], x1[11], &x2[12], &x2[11]);
// stage 3
int16x8_t x3[16];
butterfly_dct_pre_s16_x8(x2, x3, 4);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[6], x2[5], &x3[6], &x3[5]);
butterfly_dct_post_s16_x8(x1 + 8, x2 + 8, x3 + 8, 8);
// stage 4
int16x8_t x4[16];
butterfly_s16_s32_x8_0112_neon(cospi32, x3[0], x3[1], &output[0], &output[8]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[3], x3[2], &output[4],
&output[12]);
butterfly_dct_post_s16_x8(x2 + 4, x3 + 4, x4 + 4, 4);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[14], x3[9], &x4[14], &x4[9]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[13], x3[10], &x4[13], &x4[10]);
// stage 5
int16x8_t x5[16];
butterfly_s16_s32_x8_0112_neon(cospi8, x4[7], x4[4], &output[2], &output[14]);
butterfly_s16_s32_x8_1003_neon(cospi24, x4[6], x4[5], &output[10],
&output[6]);
butterfly_dct_post_s16_x8(x3 + 8, x4 + 8, x5 + 8, 4);
butterfly_dct_post_s16_x8(x3 + 12, x4 + 12, x5 + 12, 4);
// stage 6-7
butterfly_s16_s32_x8_0112_neon(cospi4, x5[15], x5[8], &output[1],
&output[15]);
butterfly_s16_s32_x8_1003_neon(cospi28, x5[14], x5[9], &output[9],
&output[7]);
butterfly_s16_s32_x8_0112_neon(cospi20, x5[13], x5[10], &output[5],
&output[11]);
butterfly_s16_s32_x8_1003_neon(cospi12, x5[12], x5[11], &output[13],
&output[3]);
}
static AOM_FORCE_INLINE void fdct8x32_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x8_t cospi2_6 = vld1q_s16(&cospi[4 * 8]);
const int16x8_t cospi10_14 = vld1q_s16(&cospi[4 * 10]);
const int16x8_t cospi18_22 = vld1q_s16(&cospi[4 * 12]);
const int16x8_t cospi26_30 = vld1q_s16(&cospi[4 * 14]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
const int16x4_t cospi2 = vget_low_s16(cospi2_6);
const int16x4_t cospi6 = vget_high_s16(cospi2_6);
const int16x4_t cospi10 = vget_low_s16(cospi10_14);
const int16x4_t cospi14 = vget_high_s16(cospi10_14);
const int16x4_t cospi18 = vget_low_s16(cospi18_22);
const int16x4_t cospi22 = vget_high_s16(cospi18_22);
const int16x4_t cospi26 = vget_low_s16(cospi26_30);
const int16x4_t cospi30 = vget_high_s16(cospi26_30);
// stage 1
int16x8_t x1[32];
butterfly_dct_pre_s16_x8(input, x1, 32);
// stage 2
int16x8_t x2[32];
butterfly_dct_pre_s16_x8(x1, x2, 16);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[27], x1[20], &x2[27], &x2[20]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[26], x1[21], &x2[26], &x2[21]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[25], x1[22], &x2[25], &x2[22]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[24], x1[23], &x2[24], &x2[23]);
// stage 3
int16x8_t x3[32];
butterfly_dct_pre_s16_x8(x2, x3, 8);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[13], x2[10], &x3[13], &x3[10]);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[12], x2[11], &x3[12], &x3[11]);
butterfly_dct_post_s16_x8(x1 + 16, x2 + 16, x3 + 16, 16);
// stage 4
int16x8_t x4[32];
butterfly_dct_pre_s16_x8(x3, x4, 4);
butterfly_s16_s32_x8_0112_neon(cospi32, x3[6], x3[5], &x4[6], &x4[5]);
butterfly_dct_post_s16_x8(x2 + 8, x3 + 8, x4 + 8, 8);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[29], x3[18], &x4[29], &x4[18]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[28], x3[19], &x4[28], &x4[19]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[27], x3[20], &x4[27], &x4[20]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[26], x3[21], &x4[26], &x4[21]);
// stage 5
int16x8_t x5[32];
butterfly_s16_s32_x8_0112_neon(cospi32, x4[0], x4[1], &output[0],
&output[16]);
butterfly_s16_s32_x8_0112_neon(cospi16, x4[3], x4[2], &output[8],
&output[24]);
butterfly_dct_post_s16_x8(x3 + 4, x4 + 4, x5 + 4, 4);
butterfly_s16_s32_x8_0112_neon(cospi16, x4[14], x4[9], &x5[14], &x5[9]);
butterfly_s16_s32_x8_1223_neon(cospi16, x4[13], x4[10], &x5[13], &x5[10]);
butterfly_dct_post_s16_x8(x3 + 16, x4 + 16, x5 + 16, 8);
butterfly_dct_post_s16_x8(x3 + 24, x4 + 24, x5 + 24, 8);
// stage 6
int16x8_t x6[32];
butterfly_s16_s32_x8_0112_neon(cospi8, x5[7], x5[4], &output[4], &output[28]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[6], x5[5], &output[20],
&output[12]);
butterfly_dct_post_s16_x8(x4 + 8, x5 + 8, x6 + 8, 4);
butterfly_dct_post_s16_x8(x4 + 12, x5 + 12, x6 + 12, 4);
butterfly_s16_s32_x8_0112_neon(cospi8, x5[30], x5[17], &x6[30], &x6[17]);
butterfly_s16_s32_x8_1223_neon(cospi8, x5[29], x5[18], &x6[29], &x6[18]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[26], x5[21], &x6[26], &x6[21]);
butterfly_s16_s32_x8_0332_neon(cospi24, x5[25], x5[22], &x6[25], &x6[22]);
// stage 7
int16x8_t x7[32];
butterfly_s16_s32_x8_0112_neon(cospi4, x6[15], x6[8], &output[2],
&output[30]);
butterfly_s16_s32_x8_1003_neon(cospi28, x6[14], x6[9], &output[18],
&output[14]);
butterfly_s16_s32_x8_0112_neon(cospi20, x6[13], x6[10], &output[10],
&output[22]);
butterfly_s16_s32_x8_1003_neon(cospi12, x6[12], x6[11], &output[26],
&output[6]);
butterfly_dct_post_s16_x8(x5 + 16, x6 + 16, x7 + 16, 4);
butterfly_dct_post_s16_x8(x5 + 20, x6 + 20, x7 + 20, 4);
butterfly_dct_post_s16_x8(x5 + 24, x6 + 24, x7 + 24, 4);
butterfly_dct_post_s16_x8(x5 + 28, x6 + 28, x7 + 28, 4);
butterfly_s16_s32_x8_0112_neon(cospi2, x7[31], x7[16], &output[1],
&output[31]);
butterfly_s16_s32_x8_1003_neon(cospi30, x7[30], x7[17], &output[17],
&output[15]);
butterfly_s16_s32_x8_0112_neon(cospi18, x7[29], x7[18], &output[9],
&output[23]);
butterfly_s16_s32_x8_1003_neon(cospi14, x7[28], x7[19], &output[25],
&output[7]);
butterfly_s16_s32_x8_0112_neon(cospi10, x7[27], x7[20], &output[5],
&output[27]);
butterfly_s16_s32_x8_1003_neon(cospi22, x7[26], x7[21], &output[21],
&output[11]);
butterfly_s16_s32_x8_0112_neon(cospi26, x7[25], x7[22], &output[13],
&output[19]);
butterfly_s16_s32_x8_1003_neon(cospi6, x7[24], x7[23], &output[29],
&output[3]);
}
static AOM_FORCE_INLINE void fdct8x64_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x8_t cospi2_6 = vld1q_s16(&cospi[4 * 8]);
const int16x8_t cospi10_14 = vld1q_s16(&cospi[4 * 10]);
const int16x8_t cospi18_22 = vld1q_s16(&cospi[4 * 12]);
const int16x8_t cospi26_30 = vld1q_s16(&cospi[4 * 14]);
const int16x8_t cospi1_3 = vld1q_s16(&cospi[4 * 16]);
const int16x8_t cospi5_7 = vld1q_s16(&cospi[4 * 18]);
const int16x8_t cospi9_11 = vld1q_s16(&cospi[4 * 20]);
const int16x8_t cospi13_15 = vld1q_s16(&cospi[4 * 22]);
const int16x8_t cospi17_19 = vld1q_s16(&cospi[4 * 24]);
const int16x8_t cospi21_23 = vld1q_s16(&cospi[4 * 26]);
const int16x8_t cospi25_27 = vld1q_s16(&cospi[4 * 28]);
const int16x8_t cospi29_31 = vld1q_s16(&cospi[4 * 30]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
const int16x4_t cospi2 = vget_low_s16(cospi2_6);
const int16x4_t cospi6 = vget_high_s16(cospi2_6);
const int16x4_t cospi10 = vget_low_s16(cospi10_14);
const int16x4_t cospi14 = vget_high_s16(cospi10_14);
const int16x4_t cospi18 = vget_low_s16(cospi18_22);
const int16x4_t cospi22 = vget_high_s16(cospi18_22);
const int16x4_t cospi26 = vget_low_s16(cospi26_30);
const int16x4_t cospi30 = vget_high_s16(cospi26_30);
const int16x4_t cospi1 = vget_low_s16(cospi1_3);
const int16x4_t cospi3 = vget_high_s16(cospi1_3);
const int16x4_t cospi5 = vget_low_s16(cospi5_7);
const int16x4_t cospi7 = vget_high_s16(cospi5_7);
const int16x4_t cospi9 = vget_low_s16(cospi9_11);
const int16x4_t cospi11 = vget_high_s16(cospi9_11);
const int16x4_t cospi13 = vget_low_s16(cospi13_15);
const int16x4_t cospi15 = vget_high_s16(cospi13_15);
const int16x4_t cospi17 = vget_low_s16(cospi17_19);
const int16x4_t cospi19 = vget_high_s16(cospi17_19);
const int16x4_t cospi21 = vget_low_s16(cospi21_23);
const int16x4_t cospi23 = vget_high_s16(cospi21_23);
const int16x4_t cospi25 = vget_low_s16(cospi25_27);
const int16x4_t cospi27 = vget_high_s16(cospi25_27);
const int16x4_t cospi29 = vget_low_s16(cospi29_31);
const int16x4_t cospi31 = vget_high_s16(cospi29_31);
// stage 1
int16x8_t x1[64];
butterfly_dct_pre_s16_x8(input, x1, 64);
// stage 2
int16x8_t x2[64];
butterfly_dct_pre_s16_x8(x1, x2, 32);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[55], x1[40], &x2[55], &x2[40]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[54], x1[41], &x2[54], &x2[41]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[53], x1[42], &x2[53], &x2[42]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[52], x1[43], &x2[52], &x2[43]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[51], x1[44], &x2[51], &x2[44]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[50], x1[45], &x2[50], &x2[45]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[49], x1[46], &x2[49], &x2[46]);
butterfly_s16_s32_x8_0112_neon(cospi32, x1[48], x1[47], &x2[48], &x2[47]);
// stage 3
int16x8_t x3[64];
butterfly_dct_pre_s16_x8(x2, x3, 16);
x3[16] = x2[16];
x3[17] = x2[17];
x3[18] = x2[18];
x3[19] = x2[19];
butterfly_s16_s32_x8_0112_neon(cospi32, x2[27], x2[20], &x3[27], &x3[20]);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[26], x2[21], &x3[26], &x3[21]);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[25], x2[22], &x3[25], &x3[22]);
butterfly_s16_s32_x8_0112_neon(cospi32, x2[24], x2[23], &x3[24], &x3[23]);
x3[28] = x2[28];
x3[29] = x2[29];
x3[30] = x2[30];
x3[31] = x2[31];
butterfly_dct_post_s16_x8(x1 + 32, x2 + 32, x3 + 32, 32);
// stage 4
int16x8_t x4[64];
butterfly_dct_pre_s16_x8(x3, x4, 8);
butterfly_s16_s32_x8_0112_neon(cospi32, x3[13], x3[10], &x4[13], &x4[10]);
butterfly_s16_s32_x8_0112_neon(cospi32, x3[12], x3[11], &x4[12], &x4[11]);
butterfly_dct_post_s16_x8(x3 + 16, x3 + 16, x4 + 16, 16);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[59], x3[36], &x4[59], &x4[36]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[58], x3[37], &x4[58], &x4[37]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[57], x3[38], &x4[57], &x4[38]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[56], x3[39], &x4[56], &x4[39]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[55], x3[40], &x4[55], &x4[40]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[54], x3[41], &x4[54], &x4[41]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[53], x3[42], &x4[53], &x4[42]);
butterfly_s16_s32_x8_1223_neon(cospi16, x3[52], x3[43], &x4[52], &x4[43]);
// stage 5
int16x8_t x5[64];
butterfly_dct_pre_s16_x8(x4, x5, 4);
butterfly_s16_s32_x8_0112_neon(cospi32, x4[6], x4[5], &x5[6], &x5[5]);
butterfly_dct_post_s16_x8(x3 + 8, x4 + 8, x5 + 8, 8);
butterfly_s16_s32_x8_0112_neon(cospi16, x4[29], x4[18], &x5[29], &x5[18]);
butterfly_s16_s32_x8_0112_neon(cospi16, x4[28], x4[19], &x5[28], &x5[19]);
butterfly_s16_s32_x8_1223_neon(cospi16, x4[27], x4[20], &x5[27], &x5[20]);
butterfly_s16_s32_x8_1223_neon(cospi16, x4[26], x4[21], &x5[26], &x5[21]);
butterfly_dct_post_s16_x8(x3 + 32, x4 + 32, x5 + 32, 16);
butterfly_dct_post_s16_x8(x3 + 48, x4 + 48, x5 + 48, 16);
// stage 6
int16x8_t x6[64];
butterfly_s16_s32_x8_0112_neon(cospi32, x5[1], x5[0], &x6[0], &x6[1]);
butterfly_s16_s32_x8_0112_neon(cospi16, x5[3], x5[2], &x6[2], &x6[3]);
butterfly_dct_post_s16_x8(x4 + 4, x5 + 4, x6 + 4, 4);
butterfly_s16_s32_x8_0112_neon(cospi16, x5[14], x5[9], &x6[14], &x6[9]);
butterfly_s16_s32_x8_1223_neon(cospi16, x5[13], x5[10], &x6[13], &x6[10]);
butterfly_dct_post_s16_x8(x4 + 16, x5 + 16, x6 + 16, 8);
butterfly_dct_post_s16_x8(x4 + 24, x5 + 24, x6 + 24, 8);
butterfly_s16_s32_x8_0112_neon(cospi8, x5[61], x5[34], &x6[61], &x6[34]);
butterfly_s16_s32_x8_0112_neon(cospi8, x5[60], x5[35], &x6[60], &x6[35]);
butterfly_s16_s32_x8_1223_neon(cospi8, x5[59], x5[36], &x6[59], &x6[36]);
butterfly_s16_s32_x8_1223_neon(cospi8, x5[58], x5[37], &x6[58], &x6[37]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[53], x5[42], &x6[53], &x6[42]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[52], x5[43], &x6[52], &x6[43]);
butterfly_s16_s32_x8_0332_neon(cospi24, x5[51], x5[44], &x6[51], &x6[44]);
butterfly_s16_s32_x8_0332_neon(cospi24, x5[50], x5[45], &x6[50], &x6[45]);
// stage 7
int16x8_t x7[64];
butterfly_s16_s32_x8_0112_neon(cospi8, x6[7], x6[4], &x7[4], &x7[7]);
butterfly_s16_s32_x8_1003_neon(cospi24, x6[6], x6[5], &x7[5], &x7[6]);
butterfly_dct_post_s16_x8(x5 + 8, x6 + 8, x7 + 8, 4);
butterfly_dct_post_s16_x8(x5 + 12, x6 + 12, x7 + 12, 4);
butterfly_s16_s32_x8_0112_neon(cospi8, x6[30], x6[17], &x7[30], &x7[17]);
butterfly_s16_s32_x8_1223_neon(cospi8, x6[29], x6[18], &x7[29], &x7[18]);
butterfly_s16_s32_x8_1003_neon(cospi24, x6[26], x6[21], &x7[26], &x7[21]);
butterfly_s16_s32_x8_0332_neon(cospi24, x6[25], x6[22], &x7[25], &x7[22]);
butterfly_dct_post_s16_x8(x5 + 32, x6 + 32, x7 + 32, 8);
butterfly_dct_post_s16_x8(x5 + 40, x6 + 40, x7 + 40, 8);
butterfly_dct_post_s16_x8(x5 + 48, x6 + 48, x7 + 48, 8);
butterfly_dct_post_s16_x8(x5 + 56, x6 + 56, x7 + 56, 8);
// stage 8
int16x8_t x8[64];
butterfly_s16_s32_x8_0112_neon(cospi4, x7[15], x7[8], &x8[8], &x8[15]);
butterfly_s16_s32_x8_1003_neon(cospi28, x7[14], x7[9], &x8[9], &x8[14]);
butterfly_s16_s32_x8_0112_neon(cospi20, x7[13], x7[10], &x8[10], &x8[13]);
butterfly_s16_s32_x8_1003_neon(cospi12, x7[12], x7[11], &x8[11], &x8[12]);
butterfly_dct_post_s16_x8(x6 + 16, x7 + 16, x8 + 16, 4);
butterfly_dct_post_s16_x8(x6 + 20, x7 + 20, x8 + 20, 4);
butterfly_dct_post_s16_x8(x6 + 24, x7 + 24, x8 + 24, 4);
butterfly_dct_post_s16_x8(x6 + 28, x7 + 28, x8 + 28, 4);
butterfly_s16_s32_x8_0112_neon(cospi4, x7[62], x7[33], &x8[62], &x8[33]);
butterfly_s16_s32_x8_1223_neon(cospi4, x7[61], x7[34], &x8[61], &x8[34]);
butterfly_s16_s32_x8_1003_neon(cospi28, x7[58], x7[37], &x8[58], &x8[37]);
butterfly_s16_s32_x8_0332_neon(cospi28, x7[57], x7[38], &x8[57], &x8[38]);
butterfly_s16_s32_x8_0112_neon(cospi20, x7[54], x7[41], &x8[54], &x8[41]);
butterfly_s16_s32_x8_1223_neon(cospi20, x7[53], x7[42], &x8[53], &x8[42]);
butterfly_s16_s32_x8_1003_neon(cospi12, x7[50], x7[45], &x8[50], &x8[45]);
butterfly_s16_s32_x8_0332_neon(cospi12, x7[49], x7[46], &x8[49], &x8[46]);
// stage 9
int16x8_t x9[64];
butterfly_s16_s32_x8_0112_neon(cospi2, x8[31], x8[16], &x9[16], &x9[31]);
butterfly_s16_s32_x8_1003_neon(cospi30, x8[30], x8[17], &x9[17], &x9[30]);
butterfly_s16_s32_x8_0112_neon(cospi18, x8[29], x8[18], &x9[18], &x9[29]);
butterfly_s16_s32_x8_1003_neon(cospi14, x8[28], x8[19], &x9[19], &x9[28]);
butterfly_s16_s32_x8_0112_neon(cospi10, x8[27], x8[20], &x9[20], &x9[27]);
butterfly_s16_s32_x8_1003_neon(cospi22, x8[26], x8[21], &x9[21], &x9[26]);
butterfly_s16_s32_x8_0112_neon(cospi26, x8[25], x8[22], &x9[22], &x9[25]);
butterfly_s16_s32_x8_1003_neon(cospi6, x8[24], x8[23], &x9[23], &x9[24]);
butterfly_dct_post_s16_x8(x7 + 32, x8 + 32, x9 + 32, 4);
butterfly_dct_post_s16_x8(x7 + 36, x8 + 36, x9 + 36, 4);
butterfly_dct_post_s16_x8(x7 + 40, x8 + 40, x9 + 40, 4);
butterfly_dct_post_s16_x8(x7 + 44, x8 + 44, x9 + 44, 4);
butterfly_dct_post_s16_x8(x7 + 48, x8 + 48, x9 + 48, 4);
butterfly_dct_post_s16_x8(x7 + 52, x8 + 52, x9 + 52, 4);
butterfly_dct_post_s16_x8(x7 + 56, x8 + 56, x9 + 56, 4);
butterfly_dct_post_s16_x8(x7 + 60, x8 + 60, x9 + 60, 4);
// stage 10
butterfly_s16_s32_x8_0112_neon(cospi1, x9[63], x9[32], &output[1],
&output[63]);
butterfly_s16_s32_x8_1003_neon(cospi31, x9[62], x9[33], &output[33],
&output[31]);
butterfly_s16_s32_x8_0112_neon(cospi17, x9[61], x9[34], &output[17],
&output[47]);
butterfly_s16_s32_x8_1003_neon(cospi15, x9[60], x9[35], &output[49],
&output[15]);
butterfly_s16_s32_x8_0112_neon(cospi9, x9[59], x9[36], &output[9],
&output[55]);
butterfly_s16_s32_x8_1003_neon(cospi23, x9[58], x9[37], &output[41],
&output[23]);
butterfly_s16_s32_x8_0112_neon(cospi25, x9[57], x9[38], &output[25],
&output[39]);
butterfly_s16_s32_x8_1003_neon(cospi7, x9[56], x9[39], &output[57],
&output[7]);
butterfly_s16_s32_x8_0112_neon(cospi5, x9[55], x9[40], &output[5],
&output[59]);
butterfly_s16_s32_x8_1003_neon(cospi27, x9[54], x9[41], &output[37],
&output[27]);
butterfly_s16_s32_x8_0112_neon(cospi21, x9[53], x9[42], &output[21],
&output[43]);
butterfly_s16_s32_x8_1003_neon(cospi11, x9[52], x9[43], &output[53],
&output[11]);
butterfly_s16_s32_x8_0112_neon(cospi13, x9[51], x9[44], &output[13],
&output[51]);
butterfly_s16_s32_x8_1003_neon(cospi19, x9[50], x9[45], &output[45],
&output[19]);
butterfly_s16_s32_x8_0112_neon(cospi29, x9[49], x9[46], &output[29],
&output[35]);
butterfly_s16_s32_x8_1003_neon(cospi3, x9[48], x9[47], &output[61],
&output[3]);
// stage 11
output[0] = x6[0];
output[2] = x9[16];
output[4] = x8[8];
output[6] = x9[24];
output[8] = x7[4];
output[10] = x9[20];
output[12] = x8[12];
output[14] = x9[28];
output[16] = x6[2];
output[18] = x9[18];
output[20] = x8[10];
output[22] = x9[26];
output[24] = x7[6];
output[26] = x9[22];
output[28] = x8[14];
output[30] = x9[30];
output[32] = x6[1];
output[34] = x9[17];
output[36] = x8[9];
output[38] = x9[25];
output[40] = x7[5];
output[42] = x9[21];
output[44] = x8[13];
output[46] = x9[29];
output[48] = x6[3];
output[52] = x8[11];
output[54] = x9[27];
output[56] = x7[7];
output[58] = x9[23];
output[60] = x8[15];
output[62] = x9[31];
}
static AOM_FORCE_INLINE void fadst8x8_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi4_12 = vld1q_s16(&cospi[4 * 4]);
const int16x8_t cospi20_28 = vld1q_s16(&cospi[4 * 6]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi4 = vget_low_s16(cospi4_12);
const int16x4_t cospi12 = vget_high_s16(cospi4_12);
const int16x4_t cospi20 = vget_low_s16(cospi20_28);
const int16x4_t cospi28 = vget_high_s16(cospi20_28);
// stage 2
int16x8_t x2[8];
butterfly_s16_s32_x8_0332_neon(cospi32, input[4], input[3], &x2[2], &x2[3]);
butterfly_s16_s32_x8_0112_neon(cospi32, input[2], input[5], &x2[7], &x2[6]);
// stage 3
int16x8_t x3[8];
x3[0] = vqaddq_s16(input[0], x2[2]);
x3[1] = vqsubq_s16(x2[3], input[7]);
x3[2] = vqsubq_s16(input[0], x2[2]);
x3[3] = vqaddq_s16(input[7], x2[3]);
x3[4] = vqsubq_s16(x2[6], input[1]);
x3[5] = vqaddq_s16(input[6], x2[7]);
x3[6] = vqaddq_s16(input[1], x2[6]);
x3[7] = vqsubq_s16(input[6], x2[7]);
// stage 4
butterfly_s16_s32_x8_0112_neon(cospi16, x3[4], x3[5], &x3[4], &x3[5]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[7], x3[6], &x3[6], &x3[7]);
// stage 5
int16x8_t x5[8];
x5[0] = vqaddq_s16(x3[0], x3[4]);
x5[1] = vqaddq_s16(x3[1], x3[5]);
x5[2] = vqaddq_s16(x3[2], x3[6]);
x5[3] = vqsubq_s16(x3[7], x3[3]);
x5[4] = vqsubq_s16(x3[0], x3[4]);
x5[5] = vqsubq_s16(x3[1], x3[5]);
x5[6] = vqsubq_s16(x3[2], x3[6]);
x5[7] = vqaddq_s16(x3[3], x3[7]);
// stage 6
butterfly_s16_s32_x8_0112_neon(cospi4, x5[0], x5[1], &output[7], &output[0]);
butterfly_s16_s32_x8_0112_neon(cospi20, x5[2], x5[3], &output[5], &output[2]);
butterfly_s16_s32_x8_1003_neon(cospi28, x5[4], x5[5], &output[3], &output[4]);
butterfly_s16_s32_x8_0112_neon(cospi12, x5[6], x5[7], &output[6], &output[1]);
}
static AOM_FORCE_INLINE void fadst4x16_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi2_6 = vld1q_s16(&cospi[4 * 8]);
const int16x8_t cospi10_14 = vld1q_s16(&cospi[4 * 10]);
const int16x8_t cospi18_22 = vld1q_s16(&cospi[4 * 12]);
const int16x8_t cospi26_30 = vld1q_s16(&cospi[4 * 14]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi2 = vget_low_s16(cospi2_6);
const int16x4_t cospi6 = vget_high_s16(cospi2_6);
const int16x4_t cospi10 = vget_low_s16(cospi10_14);
const int16x4_t cospi14 = vget_high_s16(cospi10_14);
const int16x4_t cospi18 = vget_low_s16(cospi18_22);
const int16x4_t cospi22 = vget_high_s16(cospi18_22);
const int16x4_t cospi26 = vget_low_s16(cospi26_30);
const int16x4_t cospi30 = vget_high_s16(cospi26_30);
// stage 2
int16x4_t x2[8];
butterfly_s16_s32_x4_0332_neon(cospi32, input[8], input[7], &x2[0], &x2[1]);
butterfly_s16_s32_x4_0112_neon(cospi32, input[4], input[11], &x2[3], &x2[2]);
butterfly_s16_s32_x4_0112_neon(cospi32, input[6], input[9], &x2[5], &x2[4]);
butterfly_s16_s32_x4_0332_neon(cospi32, input[10], input[5], &x2[6], &x2[7]);
// stage 3
int16x4_t x3[16];
x3[0] = vqadd_s16(input[0], x2[0]);
x3[1] = vqsub_s16(x2[1], input[15]);
x3[2] = vqsub_s16(input[0], x2[0]);
x3[3] = vqadd_s16(input[15], x2[1]);
x3[4] = vqsub_s16(x2[2], input[3]);
x3[5] = vqadd_s16(input[12], x2[3]);
x3[6] = vqadd_s16(input[3], x2[2]);
x3[7] = vqsub_s16(input[12], x2[3]);
x3[8] = vqsub_s16(x2[4], input[1]);
x3[9] = vqadd_s16(input[14], x2[5]);
x3[10] = vqadd_s16(input[1], x2[4]);
x3[11] = vqsub_s16(input[14], x2[5]);
x3[12] = vqadd_s16(input[2], x2[6]);
x3[13] = vqsub_s16(x2[7], input[13]);
x3[14] = vqsub_s16(input[2], x2[6]);
x3[15] = vqadd_s16(input[13], x2[7]);
// stage 4
butterfly_s16_s32_x4_0112_neon(cospi16, x3[4], x3[5], &x3[4], &x3[5]);
butterfly_s16_s32_x4_0112_neon(cospi16, x3[7], x3[6], &x3[6], &x3[7]);
butterfly_s16_s32_x4_0112_neon(cospi16, x3[12], x3[13], &x3[12], &x3[13]);
butterfly_s16_s32_x4_0332_neon(cospi16, x3[14], x3[15], &x3[15], &x3[14]);
// stage 5
int16x4_t x5[16];
x5[0] = vqadd_s16(x3[0], x3[4]);
x5[1] = vqadd_s16(x3[1], x3[5]);
x5[2] = vqadd_s16(x3[2], x3[6]);
x5[3] = vqsub_s16(x3[7], x3[3]);
x5[4] = vqsub_s16(x3[0], x3[4]);
x5[5] = vqsub_s16(x3[1], x3[5]);
x5[6] = vqsub_s16(x3[2], x3[6]);
x5[7] = vqadd_s16(x3[3], x3[7]);
x5[8] = vqadd_s16(x3[8], x3[12]);
x5[9] = vqadd_s16(x3[9], x3[13]);
x5[10] = vqsub_s16(x3[14], x3[10]);
x5[11] = vqadd_s16(x3[11], x3[15]);
x5[12] = vqsub_s16(x3[8], x3[12]);
x5[13] = vqsub_s16(x3[9], x3[13]);
x5[14] = vqadd_s16(x3[10], x3[14]);
x5[15] = vqsub_s16(x3[11], x3[15]);
// stage 6
butterfly_s16_s32_x4_0112_neon(cospi8, x5[8], x5[9], &x5[8], &x5[9]);
butterfly_s16_s32_x4_1003_neon(cospi24, x5[10], x5[11], &x5[10], &x5[11]);
butterfly_s16_s32_x4_1003_neon(cospi8, x5[13], x5[12], &x5[13], &x5[12]);
butterfly_s16_s32_x4_1003_neon(cospi24, x5[15], x5[14], &x5[14], &x5[15]);
// stage 7
int16x4_t x7[16];
x7[0] = vqadd_s16(x5[0], x5[8]);
x7[1] = vqadd_s16(x5[1], x5[9]);
x7[2] = vqadd_s16(x5[2], x5[10]);
x7[3] = vqadd_s16(x5[3], x5[11]);
x7[4] = vqadd_s16(x5[4], x5[12]);
x7[5] = vqadd_s16(x5[5], x5[13]);
x7[6] = vqadd_s16(x5[6], x5[14]);
x7[7] = vqsub_s16(x5[15], x5[7]);
x7[8] = vqsub_s16(x5[0], x5[8]);
x7[9] = vqsub_s16(x5[1], x5[9]);
x7[10] = vqsub_s16(x5[2], x5[10]);
x7[11] = vqsub_s16(x5[3], x5[11]);
x7[12] = vqsub_s16(x5[4], x5[12]);
x7[13] = vqsub_s16(x5[5], x5[13]);
x7[14] = vqsub_s16(x5[6], x5[14]);
x7[15] = vqadd_s16(x5[7], x5[15]);
// stage 8
butterfly_s16_s32_x4_0112_neon(cospi2, x7[0], x7[1], &output[15], &output[0]);
butterfly_s16_s32_x4_0112_neon(cospi10, x7[2], x7[3], &output[13],
&output[2]);
butterfly_s16_s32_x4_0112_neon(cospi18, x7[4], x7[5], &output[11],
&output[4]);
butterfly_s16_s32_x4_0112_neon(cospi26, x7[6], x7[7], &output[9], &output[6]);
butterfly_s16_s32_x4_1003_neon(cospi30, x7[8], x7[9], &output[7], &output[8]);
butterfly_s16_s32_x4_1003_neon(cospi22, x7[10], x7[11], &output[5],
&output[10]);
butterfly_s16_s32_x4_1003_neon(cospi14, x7[12], x7[13], &output[3],
&output[12]);
butterfly_s16_s32_x4_0112_neon(cospi6, x7[14], x7[15], &output[14],
&output[1]);
}
static AOM_FORCE_INLINE void fadst8x16_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
const int16_t *cospi = cospi_arr_q13(cos_bit);
const int16x8_t cospi32_16 = vld1q_s16(&cospi[4 * 0]);
const int16x8_t cospi8_24 = vld1q_s16(&cospi[4 * 2]);
const int16x8_t cospi2_6 = vld1q_s16(&cospi[4 * 8]);
const int16x8_t cospi10_14 = vld1q_s16(&cospi[4 * 10]);
const int16x8_t cospi18_22 = vld1q_s16(&cospi[4 * 12]);
const int16x8_t cospi26_30 = vld1q_s16(&cospi[4 * 14]);
const int16x4_t cospi32 = vget_low_s16(cospi32_16);
const int16x4_t cospi16 = vget_high_s16(cospi32_16);
const int16x4_t cospi8 = vget_low_s16(cospi8_24);
const int16x4_t cospi24 = vget_high_s16(cospi8_24);
const int16x4_t cospi2 = vget_low_s16(cospi2_6);
const int16x4_t cospi6 = vget_high_s16(cospi2_6);
const int16x4_t cospi10 = vget_low_s16(cospi10_14);
const int16x4_t cospi14 = vget_high_s16(cospi10_14);
const int16x4_t cospi18 = vget_low_s16(cospi18_22);
const int16x4_t cospi22 = vget_high_s16(cospi18_22);
const int16x4_t cospi26 = vget_low_s16(cospi26_30);
const int16x4_t cospi30 = vget_high_s16(cospi26_30);
// stage 2
int16x8_t x2[8];
butterfly_s16_s32_x8_0332_neon(cospi32, input[8], input[7], &x2[0], &x2[1]);
butterfly_s16_s32_x8_0112_neon(cospi32, input[4], input[11], &x2[3], &x2[2]);
butterfly_s16_s32_x8_0112_neon(cospi32, input[6], input[9], &x2[5], &x2[4]);
butterfly_s16_s32_x8_0332_neon(cospi32, input[10], input[5], &x2[6], &x2[7]);
// stage 3
int16x8_t x3[16];
x3[0] = vqaddq_s16(input[0], x2[0]);
x3[1] = vqsubq_s16(x2[1], input[15]);
x3[2] = vqsubq_s16(input[0], x2[0]);
x3[3] = vqaddq_s16(input[15], x2[1]);
x3[4] = vqsubq_s16(x2[2], input[3]);
x3[5] = vqaddq_s16(input[12], x2[3]);
x3[6] = vqaddq_s16(input[3], x2[2]);
x3[7] = vqsubq_s16(input[12], x2[3]);
x3[8] = vqsubq_s16(x2[4], input[1]);
x3[9] = vqaddq_s16(input[14], x2[5]);
x3[10] = vqaddq_s16(input[1], x2[4]);
x3[11] = vqsubq_s16(input[14], x2[5]);
x3[12] = vqaddq_s16(input[2], x2[6]);
x3[13] = vqsubq_s16(x2[7], input[13]);
x3[14] = vqsubq_s16(input[2], x2[6]);
x3[15] = vqaddq_s16(input[13], x2[7]);
// stage 4
butterfly_s16_s32_x8_0112_neon(cospi16, x3[4], x3[5], &x3[4], &x3[5]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[7], x3[6], &x3[6], &x3[7]);
butterfly_s16_s32_x8_0112_neon(cospi16, x3[12], x3[13], &x3[12], &x3[13]);
butterfly_s16_s32_x8_0332_neon(cospi16, x3[14], x3[15], &x3[15], &x3[14]);
// stage 5
int16x8_t x5[16];
x5[0] = vqaddq_s16(x3[0], x3[4]);
x5[1] = vqaddq_s16(x3[1], x3[5]);
x5[2] = vqaddq_s16(x3[2], x3[6]);
x5[3] = vqsubq_s16(x3[7], x3[3]);
x5[4] = vqsubq_s16(x3[0], x3[4]);
x5[5] = vqsubq_s16(x3[1], x3[5]);
x5[6] = vqsubq_s16(x3[2], x3[6]);
x5[7] = vqaddq_s16(x3[3], x3[7]);
x5[8] = vqaddq_s16(x3[8], x3[12]);
x5[9] = vqaddq_s16(x3[9], x3[13]);
x5[10] = vqsubq_s16(x3[14], x3[10]);
x5[11] = vqaddq_s16(x3[11], x3[15]);
x5[12] = vqsubq_s16(x3[8], x3[12]);
x5[13] = vqsubq_s16(x3[9], x3[13]);
x5[14] = vqaddq_s16(x3[10], x3[14]);
x5[15] = vqsubq_s16(x3[11], x3[15]);
// stage 6
butterfly_s16_s32_x8_0112_neon(cospi8, x5[8], x5[9], &x5[8], &x5[9]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[10], x5[11], &x5[10], &x5[11]);
butterfly_s16_s32_x8_1003_neon(cospi8, x5[13], x5[12], &x5[13], &x5[12]);
butterfly_s16_s32_x8_1003_neon(cospi24, x5[15], x5[14], &x5[14], &x5[15]);
// stage 7
int16x8_t x7[16];
x7[0] = vqaddq_s16(x5[0], x5[8]);
x7[1] = vqaddq_s16(x5[1], x5[9]);
x7[2] = vqaddq_s16(x5[2], x5[10]);
x7[3] = vqaddq_s16(x5[3], x5[11]);
x7[4] = vqaddq_s16(x5[4], x5[12]);
x7[5] = vqaddq_s16(x5[5], x5[13]);
x7[6] = vqaddq_s16(x5[6], x5[14]);
x7[7] = vqsubq_s16(x5[15], x5[7]);
x7[8] = vqsubq_s16(x5[0], x5[8]);
x7[9] = vqsubq_s16(x5[1], x5[9]);
x7[10] = vqsubq_s16(x5[2], x5[10]);
x7[11] = vqsubq_s16(x5[3], x5[11]);
x7[12] = vqsubq_s16(x5[4], x5[12]);
x7[13] = vqsubq_s16(x5[5], x5[13]);
x7[14] = vqsubq_s16(x5[6], x5[14]);
x7[15] = vqaddq_s16(x5[7], x5[15]);
// stage 8
butterfly_s16_s32_x8_0112_neon(cospi2, x7[0], x7[1], &output[15], &output[0]);
butterfly_s16_s32_x8_0112_neon(cospi10, x7[2], x7[3], &output[13],
&output[2]);
butterfly_s16_s32_x8_0112_neon(cospi18, x7[4], x7[5], &output[11],
&output[4]);
butterfly_s16_s32_x8_0112_neon(cospi26, x7[6], x7[7], &output[9], &output[6]);
butterfly_s16_s32_x8_1003_neon(cospi30, x7[8], x7[9], &output[7], &output[8]);
butterfly_s16_s32_x8_1003_neon(cospi22, x7[10], x7[11], &output[5],
&output[10]);
butterfly_s16_s32_x8_1003_neon(cospi14, x7[12], x7[13], &output[3],
&output[12]);
butterfly_s16_s32_x8_0112_neon(cospi6, x7[14], x7[15], &output[14],
&output[1]);
}
static AOM_FORCE_INLINE void fidentity4x4_neon(const int16x4_t *const input,
int16x4_t *const output,
const int cos_bit) {
(void)cos_bit;
round_shift_sqrt2_s16_s16_4xn_neon(input, output, 4);
}
static AOM_FORCE_INLINE void fidentity8x4_neon(const int16x8_t *const input,
int16x8_t *const output,
const int cos_bit) {
(void)cos_bit;
round_shift_sqrt2_s16_s16_8xn_neon(input, output, 4);
}
static AOM_FORCE_INLINE void fidentity4x8_neon(const int16x4_t *input,
int16x4_t *output, int cos_bit) {
(void)cos_bit;
shift_left_1_s16_x4(input, output, 8);
}
static AOM_FORCE_INLINE void fidentity8x8_neon(const int16x8_t *input,
int16x8_t *output, int cos_bit) {
(void)cos_bit;
shift_left_1_s16_x8(input, output, 8);
}
static AOM_FORCE_INLINE void fidentity4x16_neon(const int16x4_t *input,
int16x4_t *output,
int cos_bit) {
(void)cos_bit;
round_shift_2sqrt2_s16_s16_4xn_neon(input, output, 16);
}
static AOM_FORCE_INLINE void fidentity8x16_neon(const int16x8_t *input,
int16x8_t *output,
int cos_bit) {
(void)cos_bit;
round_shift_2sqrt2_s16_s16_8xn_neon(input, output, 16);
}
static AOM_FORCE_INLINE void fidentity8x32_neon(const int16x8_t *input,
int16x8_t *output,
int cos_bit) {
(void)cos_bit;
shift_left_2_s16_x8(input, output, 32);
}
#define TRANSFORM_COL(name, tw, n) \
static void name##_col_neon(const int16_t *input, int16x##tw##_t *output, \
int stride, int cos_bit) { \
int16x##tw##_t buf0[n]; \
load_buffer_s16_x##tw(input, stride, buf0, n); \
shift_left_2_s16_x##tw(buf0, buf0, n); \
name##_neon(buf0, output, cos_bit); \
}
TRANSFORM_COL(fadst4x4, 4, 4)
TRANSFORM_COL(fadst4x8, 4, 8)
TRANSFORM_COL(fadst4x16, 4, 16)
TRANSFORM_COL(fadst8x4, 8, 4)
TRANSFORM_COL(fadst8x8, 8, 8)
TRANSFORM_COL(fadst8x16, 8, 16)
TRANSFORM_COL(fdct4x4, 4, 4)
TRANSFORM_COL(fdct4x8, 4, 8)
TRANSFORM_COL(fdct4x16, 4, 16)
TRANSFORM_COL(fdct8x4, 8, 4)
TRANSFORM_COL(fdct8x8, 8, 8)
TRANSFORM_COL(fdct8x16, 8, 16)
TRANSFORM_COL(fdct8x32, 8, 32)
TRANSFORM_COL(fidentity4x4, 4, 4)
TRANSFORM_COL(fidentity4x8, 4, 8)
TRANSFORM_COL(fidentity4x16, 4, 16)
TRANSFORM_COL(fidentity8x4, 8, 4)
TRANSFORM_COL(fidentity8x8, 8, 8)
TRANSFORM_COL(fidentity8x16, 8, 16)
TRANSFORM_COL(fidentity8x32, 8, 32)
#define TRANSFORM_ROW(name, tw, n) \
static void name##_row_neon(const int16x##tw##_t *input, int32_t *output, \
int stride, int cos_bit) { \
int16x##tw##_t buf0[n]; \
name##_neon(input, buf0, cos_bit); \
store_buffer_s16_x##tw(buf0, output, stride, n); \
}
#define TRANSFORM_ROW_RECT(name, tw, n) \
static void name##_row_rect_neon(const int16x##tw##_t *input, \
int32_t *output, int stride, int cos_bit) { \
int16x##tw##_t buf0[n]; \
name##_neon(input, buf0, cos_bit); \
store_rect_buffer_s16_x##tw(buf0, output, stride, n); \
}
TRANSFORM_ROW(fadst4x4, 4, 4)
TRANSFORM_ROW(fadst4x16, 4, 16)
TRANSFORM_ROW(fadst8x4, 8, 4)
TRANSFORM_ROW(fadst8x8, 8, 8)
TRANSFORM_ROW(fadst8x16, 8, 16)
TRANSFORM_ROW(fdct4x4, 4, 4)
TRANSFORM_ROW(fdct4x16, 4, 16)
TRANSFORM_ROW(fdct8x4, 8, 4)
TRANSFORM_ROW(fdct8x8, 8, 8)
TRANSFORM_ROW(fdct8x16, 8, 16)
TRANSFORM_ROW(fdct8x32, 8, 32)
TRANSFORM_ROW(fidentity4x4, 4, 4)
TRANSFORM_ROW(fidentity4x16, 4, 16)
TRANSFORM_ROW(fidentity8x4, 8, 4)
TRANSFORM_ROW(fidentity8x8, 8, 8)
TRANSFORM_ROW(fidentity8x16, 8, 16)
TRANSFORM_ROW(fidentity8x32, 8, 32)
TRANSFORM_ROW_RECT(fadst4x8, 4, 8)
TRANSFORM_ROW_RECT(fadst8x4, 8, 4)
TRANSFORM_ROW_RECT(fadst8x8, 8, 8)
TRANSFORM_ROW_RECT(fadst8x16, 8, 16)
TRANSFORM_ROW_RECT(fdct4x8, 4, 8)
TRANSFORM_ROW_RECT(fdct8x4, 8, 4)
TRANSFORM_ROW_RECT(fdct8x8, 8, 8)
TRANSFORM_ROW_RECT(fdct8x16, 8, 16)
TRANSFORM_ROW_RECT(fdct8x32, 8, 32)
TRANSFORM_ROW_RECT(fidentity4x8, 4, 8)
TRANSFORM_ROW_RECT(fidentity8x4, 8, 4)
TRANSFORM_ROW_RECT(fidentity8x8, 8, 8)
TRANSFORM_ROW_RECT(fidentity8x16, 8, 16)
TRANSFORM_ROW_RECT(fidentity8x32, 8, 32)
typedef void (*transform_1d_lbd_4_neon)(const int16x4_t *input,
int16x4_t *output, int cos_bit);
typedef void (*transform_1d_lbd_8_neon)(const int16x8_t *input,
int16x8_t *output, int cos_bit);
typedef void (*col_transform_1d_lbd_4_neon)(const int16_t *input,
int16x4_t *output, int stride,
int cos_bit);
typedef void (*col_transform_1d_lbd_8_neon)(const int16_t *input,
int16x8_t *output, int stride,
int cos_bit);
typedef void (*row_transform_1d_lbd_4_neon)(const int16x4_t *input,
int32_t *output, int stride,
int cos_bit);
typedef void (*row_transform_1d_lbd_8_neon)(const int16x8_t *input,
int32_t *output, int stride,
int cos_bit);
static const col_transform_1d_lbd_4_neon col_txfm4x8_arr[TX_TYPES] = {
fdct4x8_col_neon, // DCT_DCT
fadst4x8_col_neon, // ADST_DCT
fdct4x8_col_neon, // DCT_ADST
fadst4x8_col_neon, // ADST_ADST
fadst4x8_col_neon, // FLIPADST_DCT
fdct4x8_col_neon, // DCT_FLIPADST
fadst4x8_col_neon, // FLIPADST_FLIPADST
fadst4x8_col_neon, // ADST_FLIPADST
fadst4x8_col_neon, // FLIPADST_ADST
fidentity4x8_col_neon, // IDTX
fdct4x8_col_neon, // V_DCT
fidentity4x8_col_neon, // H_DCT
fadst4x8_col_neon, // V_ADST
fidentity4x8_col_neon, // H_ADST
fadst4x8_col_neon, // V_FLIPADST
fidentity4x8_col_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_txfm8x4_arr[TX_TYPES] = {
fdct8x4_row_neon, // DCT_DCT
fdct8x4_row_neon, // ADST_DCT
fadst8x4_row_neon, // DCT_ADST
fadst8x4_row_neon, // ADST_ADST
fdct8x4_row_neon, // FLIPADST_DCT
fadst8x4_row_neon, // DCT_FLIPADST
fadst8x4_row_neon, // FLIPADST_FLIPADST
fadst8x4_row_neon, // ADST_FLIPADST
fadst8x4_row_neon, // FLIPADST_ADST
fidentity8x4_row_neon, // IDTX
fidentity8x4_row_neon, // V_DCT
fdct8x4_row_neon, // H_DCT
fidentity8x4_row_neon, // V_ADST
fadst8x4_row_neon, // H_ADST
fidentity8x4_row_neon, // V_FLIPADST
fadst8x4_row_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_rect_txfm8x4_arr[TX_TYPES] = {
fdct8x4_row_rect_neon, // DCT_DCT
fdct8x4_row_rect_neon, // ADST_DCT
fadst8x4_row_rect_neon, // DCT_ADST
fadst8x4_row_rect_neon, // ADST_ADST
fdct8x4_row_rect_neon, // FLIPADST_DCT
fadst8x4_row_rect_neon, // DCT_FLIPADST
fadst8x4_row_rect_neon, // FLIPADST_FLIPADST
fadst8x4_row_rect_neon, // ADST_FLIPADST
fadst8x4_row_rect_neon, // FLIPADST_ADST
fidentity8x4_row_rect_neon, // IDTX
fidentity8x4_row_rect_neon, // V_DCT
fdct8x4_row_rect_neon, // H_DCT
fidentity8x4_row_rect_neon, // V_ADST
fadst8x4_row_rect_neon, // H_ADST
fidentity8x4_row_rect_neon, // V_FLIPADST
fadst8x4_row_rect_neon // H_FLIPADST
};
static const col_transform_1d_lbd_8_neon col_txfm8x4_arr[TX_TYPES] = {
fdct8x4_col_neon, // DCT_DCT
fadst8x4_col_neon, // ADST_DCT
fdct8x4_col_neon, // DCT_ADST
fadst8x4_col_neon, // ADST_ADST
fadst8x4_col_neon, // FLIPADST_DCT
fdct8x4_col_neon, // DCT_FLIPADST
fadst8x4_col_neon, // FLIPADST_FLIPADST
fadst8x4_col_neon, // ADST_FLIPADST
fadst8x4_col_neon, // FLIPADST_ADST
fidentity8x4_col_neon, // IDTX
fdct8x4_col_neon, // V_DCT
fidentity8x4_col_neon, // H_DCT
fadst8x4_col_neon, // V_ADST
fidentity8x4_col_neon, // H_ADST
fadst8x4_col_neon, // V_FLIPADST
fidentity8x4_col_neon // H_FLIPADST
};
static const row_transform_1d_lbd_4_neon row_rect_txfm4x8_arr[TX_TYPES] = {
fdct4x8_row_rect_neon, // DCT_DCT
fdct4x8_row_rect_neon, // ADST_DCT
fadst4x8_row_rect_neon, // DCT_ADST
fadst4x8_row_rect_neon, // ADST_ADST
fdct4x8_row_rect_neon, // FLIPADST_DCT
fadst4x8_row_rect_neon, // DCT_FLIPADST
fadst4x8_row_rect_neon, // FLIPADST_FLIPADST
fadst4x8_row_rect_neon, // ADST_FLIPADST
fadst4x8_row_rect_neon, // FLIPADST_ADST
fidentity4x8_row_rect_neon, // IDTX
fidentity4x8_row_rect_neon, // V_DCT
fdct4x8_row_rect_neon, // H_DCT
fidentity4x8_row_rect_neon, // V_ADST
fadst4x8_row_rect_neon, // H_ADST
fidentity4x8_row_rect_neon, // V_FLIPADST
fadst4x8_row_rect_neon // H_FLIPADST
};
static const col_transform_1d_lbd_8_neon col_txfm8x8_arr[TX_TYPES] = {
fdct8x8_col_neon, // DCT_DCT
fadst8x8_col_neon, // ADST_DCT
fdct8x8_col_neon, // DCT_ADST
fadst8x8_col_neon, // ADST_ADST
fadst8x8_col_neon, // FLIPADST_DCT
fdct8x8_col_neon, // DCT_FLIPADST
fadst8x8_col_neon, // FLIPADST_FLIPADST
fadst8x8_col_neon, // ADST_FLIPADST
fadst8x8_col_neon, // FLIPADST_ADST
fidentity8x8_col_neon, // IDTX
fdct8x8_col_neon, // V_DCT
fidentity8x8_col_neon, // H_DCT
fadst8x8_col_neon, // V_ADST
fidentity8x8_col_neon, // H_ADST
fadst8x8_col_neon, // V_FLIPADST
fidentity8x8_col_neon, // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_txfm8x8_arr[TX_TYPES] = {
fdct8x8_row_neon, // DCT_DCT
fdct8x8_row_neon, // ADST_DCT
fadst8x8_row_neon, // DCT_ADST
fadst8x8_row_neon, // ADST_ADST
fdct8x8_row_neon, // FLIPADST_DCT
fadst8x8_row_neon, // DCT_FLIPADST
fadst8x8_row_neon, // FLIPADST_FLIPADST
fadst8x8_row_neon, // ADST_FLIPADST
fadst8x8_row_neon, // FLIPADST_ADST
fidentity8x8_row_neon, // IDTX
fidentity8x8_row_neon, // V_DCT
fdct8x8_row_neon, // H_DCT
fidentity8x8_row_neon, // V_ADST
fadst8x8_row_neon, // H_ADST
fidentity8x8_row_neon, // V_FLIPADST
fadst8x8_row_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_rect_txfm8x8_arr[TX_TYPES] = {
fdct8x8_row_rect_neon, // DCT_DCT
fdct8x8_row_rect_neon, // ADST_DCT
fadst8x8_row_rect_neon, // DCT_ADST
fadst8x8_row_rect_neon, // ADST_ADST
fdct8x8_row_rect_neon, // FLIPADST_DCT
fadst8x8_row_rect_neon, // DCT_FLIPADST
fadst8x8_row_rect_neon, // FLIPADST_FLIPADST
fadst8x8_row_rect_neon, // ADST_FLIPADST
fadst8x8_row_rect_neon, // FLIPADST_ADST
fidentity8x8_row_rect_neon, // IDTX
fidentity8x8_row_rect_neon, // V_DCT
fdct8x8_row_rect_neon, // H_DCT
fidentity8x8_row_rect_neon, // V_ADST
fadst8x8_row_rect_neon, // H_ADST
fidentity8x8_row_rect_neon, // V_FLIPADST
fadst8x8_row_rect_neon // H_FLIPADST
};
static const col_transform_1d_lbd_4_neon col_txfm4x16_arr[TX_TYPES] = {
fdct4x16_col_neon, // DCT_DCT
fadst4x16_col_neon, // ADST_DCT
fdct4x16_col_neon, // DCT_ADST
fadst4x16_col_neon, // ADST_ADST
fadst4x16_col_neon, // FLIPADST_DCT
fdct4x16_col_neon, // DCT_FLIPADST
fadst4x16_col_neon, // FLIPADST_FLIPADST
fadst4x16_col_neon, // ADST_FLIPADST
fadst4x16_col_neon, // FLIPADST_ADST
fidentity4x16_col_neon, // IDTX
fdct4x16_col_neon, // V_DCT
fidentity4x16_col_neon, // H_DCT
fadst4x16_col_neon, // V_ADST
fidentity4x16_col_neon, // H_ADST
fadst4x16_col_neon, // V_FLIPADST
fidentity4x16_col_neon // H_FLIPADST
};
static const row_transform_1d_lbd_4_neon row_txfm4x16_arr[TX_TYPES] = {
fdct4x16_row_neon, // DCT_DCT
fdct4x16_row_neon, // ADST_DCT
fadst4x16_row_neon, // DCT_ADST
fadst4x16_row_neon, // ADST_ADST
fdct4x16_row_neon, // FLIPADST_DCT
fadst4x16_row_neon, // DCT_FLIPADST
fadst4x16_row_neon, // FLIPADST_FLIPADST
fadst4x16_row_neon, // ADST_FLIPADST
fadst4x16_row_neon, // FLIPADST_ADST
fidentity4x16_row_neon, // IDTX
fidentity4x16_row_neon, // V_DCT
fdct4x16_row_neon, // H_DCT
fidentity4x16_row_neon, // V_ADST
fadst4x16_row_neon, // H_ADST
fidentity4x16_row_neon, // V_FLIPADST
fadst4x16_row_neon // H_FLIPADST
};
static const col_transform_1d_lbd_8_neon col_txfm8x16_arr[TX_TYPES] = {
fdct8x16_col_neon, // DCT_DCT
fadst8x16_col_neon, // ADST_DCT
fdct8x16_col_neon, // DCT_ADST
fadst8x16_col_neon, // ADST_ADST
fadst8x16_col_neon, // FLIPADST_DCT
fdct8x16_col_neon, // DCT_FLIPADST
fadst8x16_col_neon, // FLIPADST_FLIPADST
fadst8x16_col_neon, // ADST_FLIPADST
fadst8x16_col_neon, // FLIPADST_ADST
fidentity8x16_col_neon, // IDTX
fdct8x16_col_neon, // V_DCT
fidentity8x16_col_neon, // H_DCT
fadst8x16_col_neon, // V_ADST
fidentity8x16_col_neon, // H_ADST
fadst8x16_col_neon, // V_FLIPADST
fidentity8x16_col_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_txfm8x16_arr[TX_TYPES] = {
fdct8x16_row_neon, // DCT_DCT
fdct8x16_row_neon, // ADST_DCT
fadst8x16_row_neon, // DCT_ADST
fadst8x16_row_neon, // ADST_ADST
fdct8x16_row_neon, // FLIPADST_DCT
fadst8x16_row_neon, // DCT_FLIPADST
fadst8x16_row_neon, // FLIPADST_FLIPADST
fadst8x16_row_neon, // ADST_FLIPADST
fadst8x16_row_neon, // FLIPADST_ADST
fidentity8x16_row_neon, // IDTX
fidentity8x16_row_neon, // V_DCT
fdct8x16_row_neon, // H_DCT
fidentity8x16_row_neon, // V_ADST
fadst8x16_row_neon, // H_ADST
fidentity8x16_row_neon, // V_FLIPADST
fadst8x16_row_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_rect_txfm8x16_arr[TX_TYPES] = {
fdct8x16_row_rect_neon, // DCT_DCT
fdct8x16_row_rect_neon, // ADST_DCT
fadst8x16_row_rect_neon, // DCT_ADST
fadst8x16_row_rect_neon, // ADST_ADST
fdct8x16_row_rect_neon, // FLIPADST_DCT
fadst8x16_row_rect_neon, // DCT_FLIPADST
fadst8x16_row_rect_neon, // FLIPADST_FLIPADST
fadst8x16_row_rect_neon, // ADST_FLIPADST
fadst8x16_row_rect_neon, // FLIPADST_ADST
fidentity8x16_row_rect_neon, // IDTX
fidentity8x16_row_rect_neon, // V_DCT
fdct8x16_row_rect_neon, // H_DCT
fidentity8x16_row_rect_neon, // V_ADST
fadst8x16_row_rect_neon, // H_ADST
fidentity8x16_row_rect_neon, // V_FLIPADST
fadst8x16_row_rect_neon // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_txfm8x32_arr[TX_TYPES] = {
fdct8x32_row_neon, // DCT_DCT
NULL, // ADST_DCT
NULL, // DCT_ADST
NULL, // ADST_ADST
NULL, // FLIPADST_DCT
NULL, // DCT_FLIPADST
NULL, // FLIPADST_FLIPADST
NULL, // ADST_FLIPADST
NULL, // FLIPADST_ADST
fidentity8x32_row_neon, // IDTX
fidentity8x32_row_neon, // V_DCT
fdct8x32_row_neon, // H_DCT
NULL, // V_ADST
NULL, // H_ADST
NULL, // V_FLIPADST
NULL // H_FLIPADST
};
static const row_transform_1d_lbd_8_neon row_rect_txfm8x32_arr[TX_TYPES] = {
fdct8x32_row_rect_neon, // DCT_DCT
NULL, // ADST_DCT
NULL, // DCT_ADST
NULL, // ADST_ADST
NULL, // FLIPADST_DCT
NULL, // DCT_FLIPADST
NULL, // FLIPADST_FLIPADST
NULL, // ADST_FLIPADST
NULL, // FLIPADST_ADST
fidentity8x32_row_rect_neon, // IDTX
fidentity8x32_row_rect_neon, // V_DCT
fdct8x32_row_rect_neon, // H_DCT
NULL, // V_ADST
NULL, // H_ADST
NULL, // V_FLIPADST
NULL // H_FLIPADST
};
static const col_transform_1d_lbd_8_neon col_txfm8x32_arr[TX_TYPES] = {
fdct8x32_col_neon, // DCT_DCT
NULL, // ADST_DCT
NULL, // DCT_ADST
NULL, // ADST_ADST
NULL, // FLIPADST_DCT
NULL, // DCT_FLIPADST
NULL, // FLIPADST_FLIPADST
NULL, // ADST_FLIPADST
NULL, // FLIPADST_ADST
fidentity8x32_col_neon, // IDTX
fdct8x32_col_neon, // V_DCT
fidentity8x32_col_neon, // H_DCT
NULL, // V_ADST
NULL, // H_ADST
NULL, // V_FLIPADST
NULL // H_FLIPADST
};
static void lowbd_fwd_txfm2d_4x4_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 4);
int16x4_t buf0[4], buf1[4];
switch (tx_type) {
case DCT_DCT:
fdct4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fdct4x4_row_neon(buf1, output, 4, 13);
break;
case ADST_DCT:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fdct4x4_row_neon(buf1, output, 4, 13);
break;
case DCT_ADST:
fdct4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fadst4x4_row_neon(buf1, output, 4, 13);
break;
case ADST_ADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fadst4x4_row_neon(buf1, output, 4, 13);
break;
case FLIPADST_DCT:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fdct4x4_row_neon(buf1, output, 4, 13);
break;
case DCT_FLIPADST:
fdct4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
flip_buf_4_neon(buf1, buf0, 4);
fadst4x4_row_neon(buf0, output, 4, 13);
break;
case FLIPADST_FLIPADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
flip_buf_4_neon(buf1, buf0, 4);
fadst4x4_row_neon(buf0, output, 4, 13);
break;
case ADST_FLIPADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
flip_buf_4_neon(buf1, buf0, 4);
fadst4x4_row_neon(buf0, output, 4, 13);
break;
case FLIPADST_ADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fadst4x4_row_neon(buf1, output, 4, 13);
break;
case IDTX:
fidentity4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fidentity4x4_row_neon(buf1, output, 4, 13);
break;
case V_DCT:
fdct4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fidentity4x4_row_neon(buf1, output, 4, 13);
break;
case H_DCT:
fidentity4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fdct4x4_row_neon(buf1, output, 4, 13);
break;
case V_ADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fidentity4x4_row_neon(buf1, output, 4, 13);
break;
case H_ADST:
fidentity4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fadst4x4_row_neon(buf1, output, 4, 13);
break;
case V_FLIPADST:
fadst4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
fidentity4x4_row_neon(buf1, output, 4, 13);
break;
case H_FLIPADST:
fidentity4x4_col_neon(input, buf0, stride, 13);
transpose_arrays_s16_4x4(buf0, buf1);
flip_buf_4_neon(buf1, buf0, 4);
fadst4x4_row_neon(buf0, output, 4, 13);
break;
}
}
static void lowbd_fwd_txfm2d_4x8_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int16x4_t buf0[8];
int16x8_t buf1[8];
const col_transform_1d_lbd_4_neon col_txfm = col_txfm4x8_arr[tx_type];
const row_transform_1d_lbd_8_neon row_txfm = row_rect_txfm8x4_arr[tx_type];
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 8);
col_txfm(input, buf0, stride, 13);
shift_right_1_round_s16_x4(buf0, buf0, 8);
transpose_arrays_s16_4x8(buf0, buf1);
if (lr_flip) {
int16x8_t buf2[8];
flip_buf_8_neon(buf1, buf2, 4);
row_txfm(buf2, output, 8, 13);
} else {
row_txfm(buf1, output, 8, 13);
}
}
static void lowbd_fwd_txfm2d_4x16_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int16x4_t buf0[16];
int16x8_t buf1[16];
const col_transform_1d_lbd_4_neon col_txfm = col_txfm4x16_arr[tx_type];
const row_transform_1d_lbd_8_neon row_txfm = row_txfm8x4_arr[tx_type];
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 16);
col_txfm(input, buf0, stride, 13);
shift_right_1_round_s16_x4(buf0, buf0, 16);
transpose_arrays_s16_4x8(buf0, buf1);
transpose_arrays_s16_4x8(buf0 + 8, buf1 + 8);
for (int i = 0; i < 2; i++) {
if (lr_flip) {
int16x8_t buf2[16];
flip_buf_8_neon(buf1 + 8 * i, buf2, 4);
row_txfm(buf2, output + 8 * i, 16, 12);
} else {
int16x8_t *buf = buf1 + 8 * i;
row_txfm(buf, output + 8 * i, 16, 12);
}
}
}
static void lowbd_fwd_txfm2d_8x4_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int16x8_t buf0[8];
int16x4_t buf1[8];
const col_transform_1d_lbd_8_neon col_txfm = col_txfm8x4_arr[tx_type];
const row_transform_1d_lbd_4_neon row_txfm = row_rect_txfm4x8_arr[tx_type];
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 4);
col_txfm(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 4);
transpose_arrays_s16_8x4(buf0, buf1);
if (lr_flip) {
int16x4_t buf2[8];
flip_buf_4_neon(buf1, buf2, 8);
row_txfm(buf2, output, 4, 13);
} else {
row_txfm(buf1, output, 4, 13);
}
}
static void lowbd_fwd_txfm2d_8x8_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 8);
int16x8_t buf0[8], buf1[8];
switch (tx_type) {
case DCT_DCT:
fdct8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fdct8x8_row_neon(buf1, output, 8, 13);
break;
case ADST_DCT:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fdct8x8_row_neon(buf1, output, 8, 13);
break;
case DCT_ADST:
fdct8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fadst8x8_row_neon(buf1, output, 8, 13);
break;
case ADST_ADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fadst8x8_row_neon(buf1, output, 8, 13);
break;
case FLIPADST_DCT:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fdct8x8_row_neon(buf1, output, 8, 13);
break;
case DCT_FLIPADST:
fdct8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
flip_buf_8_neon(buf1, buf0, 8);
fadst8x8_row_neon(buf0, output, 8, 13);
break;
case FLIPADST_FLIPADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
flip_buf_8_neon(buf1, buf0, 8);
fadst8x8_row_neon(buf0, output, 8, 13);
break;
case ADST_FLIPADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
flip_buf_8_neon(buf1, buf0, 8);
fadst8x8_row_neon(buf0, output, 8, 13);
break;
case FLIPADST_ADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fadst8x8_row_neon(buf1, output, 8, 13);
break;
case IDTX:
fidentity8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fidentity8x8_row_neon(buf1, output, 8, 13);
break;
case V_DCT:
fdct8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fidentity8x8_row_neon(buf1, output, 8, 13);
break;
case H_DCT:
fidentity8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fdct8x8_row_neon(buf1, output, 8, 13);
break;
case V_ADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fidentity8x8_row_neon(buf1, output, 8, 13);
break;
case H_ADST:
fidentity8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fadst8x8_row_neon(buf1, output, 8, 13);
break;
case V_FLIPADST:
fadst8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
fidentity8x8_row_neon(buf1, output, 8, 13);
break;
case H_FLIPADST:
fidentity8x8_col_neon(input, buf0, stride, 13);
shift_right_1_round_s16_x8(buf0, buf0, 8);
transpose_arrays_s16_8x8(buf0, buf1);
flip_buf_8_neon(buf1, buf0, 8);
fadst8x8_row_neon(buf0, output, 8, 13);
break;
}
}
static void lowbd_fwd_txfm2d_8x16_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int16x8_t buf0[16], buf1[16];
const col_transform_1d_lbd_8_neon col_txfm = col_txfm8x16_arr[tx_type];
const row_transform_1d_lbd_8_neon row_txfm = row_rect_txfm8x8_arr[tx_type];
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 16);
col_txfm(input, buf0, stride, 13);
shift_right_2_round_s16_x8(buf0, buf0, 16);
transpose_arrays_s16_8x8(buf0, buf1);
transpose_arrays_s16_8x8(buf0 + 8, buf1 + 8);
for (int i = 0; i < 2; i++) {
if (lr_flip) {
flip_buf_8_neon(buf1 + 8 * i, buf0, 8);
row_txfm(buf0, output + 8 * i, 16, 13);
} else {
int16x8_t *buf = buf1 + 8 * i;
row_txfm(buf, output + 8 * i, 16, 13);
}
}
}
static void lowbd_fwd_txfm2d_8x32_neon(const int16_t *input, int32_t *output,
int stride, TX_TYPE tx_type, int bd) {
(void)bd;
int16x8_t buf0[32], buf1[32];
const col_transform_1d_lbd_8_neon col_txfm = col_txfm8x32_arr[tx_type];
const row_transform_1d_lbd_8_neon row_txfm = row_txfm8x8_arr[tx_type];
int ud_flip, lr_flip;
get_flip_cfg(tx_type, &ud_flip, &lr_flip);
ud_adjust_input_and_stride(ud_flip, &input, &stride, 32);
col_txfm(input, buf0, stride, 12);
shift_right_2_round_s16_x8(buf0, buf0, 32);
transpose_arrays_s16_8x8(buf0, buf1);
transpose_arrays_s16_8x8(buf0 + 8, buf1 + 8);
transpose_arrays_s16_8x8(buf0 + 16, buf1 + 16);
transpose_arrays_s16_8x8(buf0 + 24, buf1 + 24);
for (int i = 0; i < 4; i++) {
if (lr_flip) {
flip_buf_8_neon(buf1 + 8 * i, buf0, 8);
row_txfm(buf0, output + 8 * i, 32, 12);
} else {
int16x8_t *buf = buf1 + 8 * i;
row_txfm(buf, output + 8 * i, 32, 12);
}
}