ref: 48c4a038eb8322824927e86e0f9fc215c3cbc1e2
dir: /vpx_dsp/x86/highbd_inv_txfm_sse2.h/
/*
* Copyright (c) 2015 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.
*/
#ifndef VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_
#define VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_
#include <emmintrin.h> // SSE2
#include "./vpx_config.h"
#include "vpx/vpx_integer.h"
#include "vpx_dsp/inv_txfm.h"
#include "vpx_dsp/x86/txfm_common_sse2.h"
static INLINE void extend_64bit(const __m128i in,
__m128i *const out /*out[2]*/) {
out[0] = _mm_unpacklo_epi32(in, in); // 0, 0, 1, 1
out[1] = _mm_unpackhi_epi32(in, in); // 2, 2, 3, 3
}
static INLINE __m128i wraplow_16bit_shift4(const __m128i in0, const __m128i in1,
const __m128i rounding) {
__m128i temp[2];
temp[0] = _mm_add_epi32(in0, rounding);
temp[1] = _mm_add_epi32(in1, rounding);
temp[0] = _mm_srai_epi32(temp[0], 4);
temp[1] = _mm_srai_epi32(temp[1], 4);
return _mm_packs_epi32(temp[0], temp[1]);
}
static INLINE __m128i wraplow_16bit_shift5(const __m128i in0, const __m128i in1,
const __m128i rounding) {
__m128i temp[2];
temp[0] = _mm_add_epi32(in0, rounding);
temp[1] = _mm_add_epi32(in1, rounding);
temp[0] = _mm_srai_epi32(temp[0], 5);
temp[1] = _mm_srai_epi32(temp[1], 5);
return _mm_packs_epi32(temp[0], temp[1]);
}
static INLINE __m128i dct_const_round_shift_64bit(const __m128i in) {
const __m128i t = _mm_add_epi64(
in,
_mm_setr_epi32(DCT_CONST_ROUNDING << 2, 0, DCT_CONST_ROUNDING << 2, 0));
return _mm_srli_si128(t, 2);
}
static INLINE __m128i pack_4(const __m128i in0, const __m128i in1) {
const __m128i t0 = _mm_unpacklo_epi32(in0, in1); // 0, 2
const __m128i t1 = _mm_unpackhi_epi32(in0, in1); // 1, 3
return _mm_unpacklo_epi32(t0, t1); // 0, 1, 2, 3
}
static INLINE __m128i add_clamp(const __m128i in0, const __m128i in1,
const int bd) {
const __m128i zero = _mm_set1_epi16(0);
// Faster than _mm_set1_epi16((1 << bd) - 1).
const __m128i one = _mm_set1_epi16(1);
const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
__m128i d;
d = _mm_adds_epi16(in0, in1);
d = _mm_max_epi16(d, zero);
d = _mm_min_epi16(d, max);
return d;
}
static INLINE void highbd_idct_1_add_kernel(const tran_low_t *input,
uint16_t *dest, int stride, int bd,
const int size) {
int a1, i, j;
tran_low_t out;
__m128i dc, d;
out = HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd);
out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd);
a1 = ROUND_POWER_OF_TWO(out, (size == 8) ? 5 : 6);
dc = _mm_set1_epi16(a1);
for (i = 0; i < size; ++i) {
for (j = 0; j < (size >> 3); ++j) {
d = _mm_load_si128((const __m128i *)(&dest[j * 8]));
d = add_clamp(d, dc, bd);
_mm_store_si128((__m128i *)(&dest[j * 8]), d);
}
dest += stride;
}
}
static INLINE void recon_and_store_4_dual(const __m128i in,
uint16_t *const dest,
const int stride, const int bd) {
__m128i d;
d = _mm_loadl_epi64((const __m128i *)(dest + 0 * stride));
d = _mm_castps_si128(
_mm_loadh_pi(_mm_castsi128_ps(d), (const __m64 *)(dest + 1 * stride)));
d = add_clamp(d, in, bd);
_mm_storel_epi64((__m128i *)(dest + 0 * stride), d);
_mm_storeh_pi((__m64 *)(dest + 1 * stride), _mm_castsi128_ps(d));
}
static INLINE void recon_and_store_4(const __m128i *const in, uint16_t *dest,
const int stride, const int bd) {
recon_and_store_4_dual(in[0], dest, stride, bd);
dest += 2 * stride;
recon_and_store_4_dual(in[1], dest, stride, bd);
}
static INLINE void recon_and_store_8_kernel(const __m128i in,
uint16_t **const dest,
const int stride, const int bd) {
__m128i d;
d = _mm_load_si128((const __m128i *)(*dest));
d = add_clamp(d, in, bd);
_mm_store_si128((__m128i *)(*dest), d);
*dest += stride;
}
static INLINE void recon_and_store_8(const __m128i *const in, uint16_t *dest,
const int stride, const int bd) {
recon_and_store_8_kernel(in[0], &dest, stride, bd);
recon_and_store_8_kernel(in[1], &dest, stride, bd);
recon_and_store_8_kernel(in[2], &dest, stride, bd);
recon_and_store_8_kernel(in[3], &dest, stride, bd);
recon_and_store_8_kernel(in[4], &dest, stride, bd);
recon_and_store_8_kernel(in[5], &dest, stride, bd);
recon_and_store_8_kernel(in[6], &dest, stride, bd);
recon_and_store_8_kernel(in[7], &dest, stride, bd);
}
#endif // VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_