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249 lines
9.3 KiB
C
249 lines
9.3 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <immintrin.h>
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#include "config/aom_dsp_rtcd.h"
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#include "aom/aom_integer.h"
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#include "aom_dsp/x86/bitdepth_conversion_avx2.h"
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#include "aom_ports/mem.h"
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static void hadamard_col8x2_avx2(__m256i *in, int iter) {
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__m256i a0 = in[0];
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__m256i a1 = in[1];
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__m256i a2 = in[2];
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__m256i a3 = in[3];
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__m256i a4 = in[4];
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__m256i a5 = in[5];
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__m256i a6 = in[6];
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__m256i a7 = in[7];
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__m256i b0 = _mm256_add_epi16(a0, a1);
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__m256i b1 = _mm256_sub_epi16(a0, a1);
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__m256i b2 = _mm256_add_epi16(a2, a3);
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__m256i b3 = _mm256_sub_epi16(a2, a3);
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__m256i b4 = _mm256_add_epi16(a4, a5);
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__m256i b5 = _mm256_sub_epi16(a4, a5);
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__m256i b6 = _mm256_add_epi16(a6, a7);
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__m256i b7 = _mm256_sub_epi16(a6, a7);
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a0 = _mm256_add_epi16(b0, b2);
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a1 = _mm256_add_epi16(b1, b3);
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a2 = _mm256_sub_epi16(b0, b2);
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a3 = _mm256_sub_epi16(b1, b3);
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a4 = _mm256_add_epi16(b4, b6);
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a5 = _mm256_add_epi16(b5, b7);
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a6 = _mm256_sub_epi16(b4, b6);
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a7 = _mm256_sub_epi16(b5, b7);
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if (iter == 0) {
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b0 = _mm256_add_epi16(a0, a4);
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b7 = _mm256_add_epi16(a1, a5);
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b3 = _mm256_add_epi16(a2, a6);
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b4 = _mm256_add_epi16(a3, a7);
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b2 = _mm256_sub_epi16(a0, a4);
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b6 = _mm256_sub_epi16(a1, a5);
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b1 = _mm256_sub_epi16(a2, a6);
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b5 = _mm256_sub_epi16(a3, a7);
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a0 = _mm256_unpacklo_epi16(b0, b1);
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a1 = _mm256_unpacklo_epi16(b2, b3);
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a2 = _mm256_unpackhi_epi16(b0, b1);
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a3 = _mm256_unpackhi_epi16(b2, b3);
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a4 = _mm256_unpacklo_epi16(b4, b5);
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a5 = _mm256_unpacklo_epi16(b6, b7);
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a6 = _mm256_unpackhi_epi16(b4, b5);
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a7 = _mm256_unpackhi_epi16(b6, b7);
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b0 = _mm256_unpacklo_epi32(a0, a1);
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b1 = _mm256_unpacklo_epi32(a4, a5);
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b2 = _mm256_unpackhi_epi32(a0, a1);
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b3 = _mm256_unpackhi_epi32(a4, a5);
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b4 = _mm256_unpacklo_epi32(a2, a3);
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b5 = _mm256_unpacklo_epi32(a6, a7);
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b6 = _mm256_unpackhi_epi32(a2, a3);
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b7 = _mm256_unpackhi_epi32(a6, a7);
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in[0] = _mm256_unpacklo_epi64(b0, b1);
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in[1] = _mm256_unpackhi_epi64(b0, b1);
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in[2] = _mm256_unpacklo_epi64(b2, b3);
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in[3] = _mm256_unpackhi_epi64(b2, b3);
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in[4] = _mm256_unpacklo_epi64(b4, b5);
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in[5] = _mm256_unpackhi_epi64(b4, b5);
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in[6] = _mm256_unpacklo_epi64(b6, b7);
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in[7] = _mm256_unpackhi_epi64(b6, b7);
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} else {
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in[0] = _mm256_add_epi16(a0, a4);
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in[7] = _mm256_add_epi16(a1, a5);
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in[3] = _mm256_add_epi16(a2, a6);
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in[4] = _mm256_add_epi16(a3, a7);
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in[2] = _mm256_sub_epi16(a0, a4);
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in[6] = _mm256_sub_epi16(a1, a5);
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in[1] = _mm256_sub_epi16(a2, a6);
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in[5] = _mm256_sub_epi16(a3, a7);
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}
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}
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static void hadamard_8x8x2_avx2(const int16_t *src_diff, ptrdiff_t src_stride,
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int16_t *coeff) {
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__m256i src[8];
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src[0] = _mm256_loadu_si256((const __m256i *)src_diff);
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src[1] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[2] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[3] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[4] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[5] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[6] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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src[7] = _mm256_loadu_si256((const __m256i *)(src_diff += src_stride));
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hadamard_col8x2_avx2(src, 0);
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hadamard_col8x2_avx2(src, 1);
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[0], src[1], 0x20));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[2], src[3], 0x20));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[4], src[5], 0x20));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[6], src[7], 0x20));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[0], src[1], 0x31));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[2], src[3], 0x31));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[4], src[5], 0x31));
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coeff += 16;
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_mm256_storeu_si256((__m256i *)coeff,
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_mm256_permute2x128_si256(src[6], src[7], 0x31));
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}
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static INLINE void hadamard_16x16_avx2(const int16_t *src_diff,
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ptrdiff_t src_stride, tran_low_t *coeff,
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int is_final) {
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DECLARE_ALIGNED(32, int16_t, temp_coeff[16 * 16]);
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int16_t *t_coeff = temp_coeff;
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int16_t *coeff16 = (int16_t *)coeff;
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int idx;
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for (idx = 0; idx < 2; ++idx) {
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const int16_t *src_ptr = src_diff + idx * 8 * src_stride;
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hadamard_8x8x2_avx2(src_ptr, src_stride, t_coeff + (idx * 64 * 2));
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}
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for (idx = 0; idx < 64; idx += 16) {
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const __m256i coeff0 = _mm256_loadu_si256((const __m256i *)t_coeff);
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const __m256i coeff1 = _mm256_loadu_si256((const __m256i *)(t_coeff + 64));
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const __m256i coeff2 = _mm256_loadu_si256((const __m256i *)(t_coeff + 128));
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const __m256i coeff3 = _mm256_loadu_si256((const __m256i *)(t_coeff + 192));
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__m256i b0 = _mm256_add_epi16(coeff0, coeff1);
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__m256i b1 = _mm256_sub_epi16(coeff0, coeff1);
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__m256i b2 = _mm256_add_epi16(coeff2, coeff3);
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__m256i b3 = _mm256_sub_epi16(coeff2, coeff3);
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b0 = _mm256_srai_epi16(b0, 1);
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b1 = _mm256_srai_epi16(b1, 1);
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b2 = _mm256_srai_epi16(b2, 1);
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b3 = _mm256_srai_epi16(b3, 1);
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if (is_final) {
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store_tran_low(_mm256_add_epi16(b0, b2), coeff);
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store_tran_low(_mm256_add_epi16(b1, b3), coeff + 64);
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store_tran_low(_mm256_sub_epi16(b0, b2), coeff + 128);
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store_tran_low(_mm256_sub_epi16(b1, b3), coeff + 192);
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coeff += 16;
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} else {
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_mm256_storeu_si256((__m256i *)coeff16, _mm256_add_epi16(b0, b2));
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_mm256_storeu_si256((__m256i *)(coeff16 + 64), _mm256_add_epi16(b1, b3));
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_mm256_storeu_si256((__m256i *)(coeff16 + 128), _mm256_sub_epi16(b0, b2));
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_mm256_storeu_si256((__m256i *)(coeff16 + 192), _mm256_sub_epi16(b1, b3));
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coeff16 += 16;
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}
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t_coeff += 16;
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}
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}
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void aom_hadamard_16x16_avx2(const int16_t *src_diff, ptrdiff_t src_stride,
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tran_low_t *coeff) {
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hadamard_16x16_avx2(src_diff, src_stride, coeff, 1);
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}
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void aom_hadamard_32x32_avx2(const int16_t *src_diff, ptrdiff_t src_stride,
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tran_low_t *coeff) {
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// For high bitdepths, it is unnecessary to store_tran_low
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// (mult/unpack/store), then load_tran_low (load/pack) the same memory in the
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// next stage. Output to an intermediate buffer first, then store_tran_low()
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// in the final stage.
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DECLARE_ALIGNED(32, int16_t, temp_coeff[32 * 32]);
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int16_t *t_coeff = temp_coeff;
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int idx;
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for (idx = 0; idx < 4; ++idx) {
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// src_diff: 9 bit, dynamic range [-255, 255]
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const int16_t *src_ptr =
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src_diff + (idx >> 1) * 16 * src_stride + (idx & 0x01) * 16;
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hadamard_16x16_avx2(src_ptr, src_stride,
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(tran_low_t *)(t_coeff + idx * 256), 0);
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}
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for (idx = 0; idx < 256; idx += 16) {
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const __m256i coeff0 = _mm256_loadu_si256((const __m256i *)t_coeff);
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const __m256i coeff1 = _mm256_loadu_si256((const __m256i *)(t_coeff + 256));
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const __m256i coeff2 = _mm256_loadu_si256((const __m256i *)(t_coeff + 512));
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const __m256i coeff3 = _mm256_loadu_si256((const __m256i *)(t_coeff + 768));
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__m256i b0 = _mm256_add_epi16(coeff0, coeff1);
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__m256i b1 = _mm256_sub_epi16(coeff0, coeff1);
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__m256i b2 = _mm256_add_epi16(coeff2, coeff3);
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__m256i b3 = _mm256_sub_epi16(coeff2, coeff3);
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b0 = _mm256_srai_epi16(b0, 2);
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b1 = _mm256_srai_epi16(b1, 2);
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b2 = _mm256_srai_epi16(b2, 2);
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b3 = _mm256_srai_epi16(b3, 2);
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store_tran_low(_mm256_add_epi16(b0, b2), coeff);
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store_tran_low(_mm256_add_epi16(b1, b3), coeff + 256);
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store_tran_low(_mm256_sub_epi16(b0, b2), coeff + 512);
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store_tran_low(_mm256_sub_epi16(b1, b3), coeff + 768);
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coeff += 16;
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t_coeff += 16;
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}
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}
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int aom_satd_avx2(const tran_low_t *coeff, int length) {
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const __m256i one = _mm256_set1_epi16(1);
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__m256i accum = _mm256_setzero_si256();
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int i;
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for (i = 0; i < length; i += 16) {
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const __m256i src_line = load_tran_low(coeff);
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const __m256i abs = _mm256_abs_epi16(src_line);
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const __m256i sum = _mm256_madd_epi16(abs, one);
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accum = _mm256_add_epi32(accum, sum);
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coeff += 16;
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}
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{ // 32 bit horizontal add
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const __m256i a = _mm256_srli_si256(accum, 8);
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const __m256i b = _mm256_add_epi32(accum, a);
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const __m256i c = _mm256_srli_epi64(b, 32);
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const __m256i d = _mm256_add_epi32(b, c);
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const __m128i accum_128 = _mm_add_epi32(_mm256_castsi256_si128(d),
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_mm256_extractf128_si256(d, 1));
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return _mm_cvtsi128_si32(accum_128);
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}
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}
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