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inv_txfm_ssse3.c


products/Sources/formale Sprachen/C/Firefox/media/libvpx/libvpx/vpx_dsp/x86/inv_txfm_ssse3.c

/* * Copyright (c) 2017 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include #include "./vpx_dsp_rtcd.h" #include "vpx_dsp/x86/inv_txfm_sse2.h" #include "vpx_dsp/x86/inv_txfm_ssse3.h" #include "vpx_dsp/x86/transpose_sse2.h" #include "vpx_dsp/x86/txfm_common_sse2.h" static INLINE void partial_butterfly_ssse3(const __m128i in, const int c0, const int c1, __m128i *const out0, __m128i *const out1) { const __m128i cst0 = _mm_set1_epi16(2 * c0); const __m128i cst1 = _mm_set1_epi16(2 * c1); *out0 = _mm_mulhrs_epi16(in, cst0); *out1 = _mm_mulhrs_epi16(in, cst1); } static INLINE __m128i partial_butterfly_cospi16_ssse3(const __m128i in) { const __m128i coef_pair = _mm_set1_epi16(2 * cospi_16_64); return _mm_mulhrs_epi16(in, coef_pair); } void vpx_idct8x8_12_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { __m128i io[8]; io[0] = load_input_data4(input + 0 * 8); io[1] = load_input_data4(input + 1 * 8); io[2] = load_input_data4(input + 2 * 8); io[3] = load_input_data4(input + 3 * 8); idct8x8_12_add_kernel_ssse3(io); write_buffer_8x8(io, dest, stride); } // Group the coefficient calculation into smaller functions to prevent stack // spillover in 32x32 idct optimizations: // quarter_1: 0-7 // quarter_2: 8-15 // quarter_3_4: 16-23, 24-31 // For each 8x32 block __m128i in[32], // Input with index, 0, 4 // output pixels: 0-7 in __m128i out[32] static INLINE void idct32_34_8x32_quarter_1(const __m128i *const in /*in[32]*/, __m128i *const out /*out[8]*/) { __m128i step1[8], step2[8]; // stage 3 partial_butterfly_ssse3(in[4], cospi_28_64, cospi_4_64, &step1[4], &step1[7]); // stage 4 step2[0] = partial_butterfly_cospi16_ssse3(in[0]); step2[4] = step1[4]; step2[5] = step1[4]; step2[6] = step1[7]; step2[7] = step1[7]; // stage 5 step1[0] = step2[0]; step1[1] = step2[0]; step1[2] = step2[0]; step1[3] = step2[0]; step1[4] = step2[4]; butterfly(step2[6], step2[5], cospi_16_64, cospi_16_64, &step1[5], &step1[6]); step1[7] = step2[7]; // stage 6 out[0] = _mm_add_epi16(step1[0], step1[7]); out[1] = _mm_add_epi16(step1[1], step1[6]); out[2] = _mm_add_epi16(step1[2], step1[5]); out[3] = _mm_add_epi16(step1[3], step1[4]); out[4] = _mm_sub_epi16(step1[3], step1[4]); out[5] = _mm_sub_epi16(step1[2], step1[5]); out[6] = _mm_sub_epi16(step1[1], step1[6]); out[7] = _mm_sub_epi16(step1[0], step1[7]); } // For each 8x32 block __m128i in[32], // Input with index, 2, 6 // output pixels: 8-15 in __m128i out[32] static INLINE void idct32_34_8x32_quarter_2(const __m128i *const in /*in[32]*/, __m128i *const out /*out[16]*/) { __m128i step1[16], step2[16]; // stage 2 partial_butterfly_ssse3(in[2], cospi_30_64, cospi_2_64, &step2[8], &step2[15]); partial_butterfly_ssse3(in[6], -cospi_26_64, cospi_6_64, &step2[11], &step2[12]); // stage 3 step1[8] = step2[8]; step1[9] = step2[8]; step1[14] = step2[15]; step1[15] = step2[15]; step1[10] = step2[11]; step1[11] = step2[11]; step1[12] = step2[12]; step1[13] = step2[12]; idct32_8x32_quarter_2_stage_4_to_6(step1, out); } static INLINE void idct32_34_8x32_quarter_1_2( const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i temp[16]; idct32_34_8x32_quarter_1(in, temp); idct32_34_8x32_quarter_2(in, temp); // stage 7 add_sub_butterfly(temp, out, 16); } // For each 8x32 block __m128i in[32], // Input with odd index, 1, 3, 5, 7 // output pixels: 16-23, 24-31 in __m128i out[32] static INLINE void idct32_34_8x32_quarter_3_4( const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i step1[32]; // stage 1 partial_butterfly_ssse3(in[1], cospi_31_64, cospi_1_64, &step1[16], &step1[31]); partial_butterfly_ssse3(in[7], -cospi_25_64, cospi_7_64, &step1[19], &step1[28]); partial_butterfly_ssse3(in[5], cospi_27_64, cospi_5_64, &step1[20], &step1[27]); partial_butterfly_ssse3(in[3], -cospi_29_64, cospi_3_64, &step1[23], &step1[24]); // stage 3 butterfly(step1[31], step1[16], cospi_28_64, cospi_4_64, &step1[17], &step1[30]); butterfly(step1[28], step1[19], -cospi_4_64, cospi_28_64, &step1[18], &step1[29]); butterfly(step1[27], step1[20], cospi_12_64, cospi_20_64, &step1[21], &step1[26]); butterfly(step1[24], step1[23], -cospi_20_64, cospi_12_64, &step1[22], &step1[25]); idct32_8x32_quarter_3_4_stage_4_to_7(step1, out); } void idct32_34_8x32_ssse3(const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i temp[32]; idct32_34_8x32_quarter_1_2(in, temp); idct32_34_8x32_quarter_3_4(in, temp); // final stage add_sub_butterfly(temp, out, 32); } // Only upper-left 8x8 has non-zero coeff void vpx_idct32x32_34_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { __m128i io[32], col[32]; int i; // Load input data. Only need to load the top left 8x8 block. load_transpose_16bit_8x8(input, 32, io); idct32_34_8x32_ssse3(io, col); for (i = 0; i < 32; i += 8) { int j; transpose_16bit_8x8(col + i, io); idct32_34_8x32_ssse3(io, io); for (j = 0; j < 32; ++j) { write_buffer_8x1(dest + j * stride, io[j]); } dest += 8; } } // For each 8x32 block __m128i in[32], // Input with index, 0, 4, 8, 12 // output pixels: 0-7 in __m128i out[32] static INLINE void idct32_135_8x32_quarter_1(const __m128i *const in /*in[32]*/, __m128i *const out /*out[8]*/) { __m128i step1[8], step2[8]; // stage 3 partial_butterfly_ssse3(in[4], cospi_28_64, cospi_4_64, &step1[4], &step1[7]); partial_butterfly_ssse3(in[12], -cospi_20_64, cospi_12_64, &step1[5], &step1[6]); // stage 4 step2[0] = partial_butterfly_cospi16_ssse3(in[0]); partial_butterfly_ssse3(in[8], cospi_24_64, cospi_8_64, &step2[2], &step2[3]); step2[4] = _mm_add_epi16(step1[4], step1[5]); step2[5] = _mm_sub_epi16(step1[4], step1[5]); step2[6] = _mm_sub_epi16(step1[7], step1[6]); step2[7] = _mm_add_epi16(step1[7], step1[6]); // stage 5 step1[0] = _mm_add_epi16(step2[0], step2[3]); step1[1] = _mm_add_epi16(step2[0], step2[2]); step1[2] = _mm_sub_epi16(step2[0], step2[2]); step1[3] = _mm_sub_epi16(step2[0], step2[3]); step1[4] = step2[4]; butterfly(step2[6], step2[5], cospi_16_64, cospi_16_64, &step1[5], &step1[6]); step1[7] = step2[7]; // stage 6 out[0] = _mm_add_epi16(step1[0], step1[7]); out[1] = _mm_add_epi16(step1[1], step1[6]); out[2] = _mm_add_epi16(step1[2], step1[5]); out[3] = _mm_add_epi16(step1[3], step1[4]); out[4] = _mm_sub_epi16(step1[3], step1[4]); out[5] = _mm_sub_epi16(step1[2], step1[5]); out[6] = _mm_sub_epi16(step1[1], step1[6]); out[7] = _mm_sub_epi16(step1[0], step1[7]); } // For each 8x32 block __m128i in[32], // Input with index, 2, 6, 10, 14 // output pixels: 8-15 in __m128i out[32] static INLINE void idct32_135_8x32_quarter_2(const __m128i *const in /*in[32]*/, __m128i *const out /*out[16]*/) { __m128i step1[16], step2[16]; // stage 2 partial_butterfly_ssse3(in[2], cospi_30_64, cospi_2_64, &step2[8], &step2[15]); partial_butterfly_ssse3(in[14], -cospi_18_64, cospi_14_64, &step2[9], &step2[14]); partial_butterfly_ssse3(in[10], cospi_22_64, cospi_10_64, &step2[10], &step2[13]); partial_butterfly_ssse3(in[6], -cospi_26_64, cospi_6_64, &step2[11], &step2[12]); // stage 3 step1[8] = _mm_add_epi16(step2[8], step2[9]); step1[9] = _mm_sub_epi16(step2[8], step2[9]); step1[10] = _mm_sub_epi16(step2[11], step2[10]); step1[11] = _mm_add_epi16(step2[11], step2[10]); step1[12] = _mm_add_epi16(step2[12], step2[13]); step1[13] = _mm_sub_epi16(step2[12], step2[13]); step1[14] = _mm_sub_epi16(step2[15], step2[14]); step1[15] = _mm_add_epi16(step2[15], step2[14]); idct32_8x32_quarter_2_stage_4_to_6(step1, out); } static INLINE void idct32_135_8x32_quarter_1_2( const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i temp[16]; idct32_135_8x32_quarter_1(in, temp); idct32_135_8x32_quarter_2(in, temp); // stage 7 add_sub_butterfly(temp, out, 16); } // For each 8x32 block __m128i in[32], // Input with odd index, // 1, 3, 5, 7, 9, 11, 13, 15 // output pixels: 16-23, 24-31 in __m128i out[32] static INLINE void idct32_135_8x32_quarter_3_4( const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i step1[32], step2[32]; // stage 1 partial_butterfly_ssse3(in[1], cospi_31_64, cospi_1_64, &step1[16], &step1[31]); partial_butterfly_ssse3(in[15], -cospi_17_64, cospi_15_64, &step1[17], &step1[30]); partial_butterfly_ssse3(in[9], cospi_23_64, cospi_9_64, &step1[18], &step1[29]); partial_butterfly_ssse3(in[7], -cospi_25_64, cospi_7_64, &step1[19], &step1[28]); partial_butterfly_ssse3(in[5], cospi_27_64, cospi_5_64, &step1[20], &step1[27]); partial_butterfly_ssse3(in[11], -cospi_21_64, cospi_11_64, &step1[21], &step1[26]); partial_butterfly_ssse3(in[13], cospi_19_64, cospi_13_64, &step1[22], &step1[25]); partial_butterfly_ssse3(in[3], -cospi_29_64, cospi_3_64, &step1[23], &step1[24]); // stage 2 step2[16] = _mm_add_epi16(step1[16], step1[17]); step2[17] = _mm_sub_epi16(step1[16], step1[17]); step2[18] = _mm_sub_epi16(step1[19], step1[18]); step2[19] = _mm_add_epi16(step1[19], step1[18]); step2[20] = _mm_add_epi16(step1[20], step1[21]); step2[21] = _mm_sub_epi16(step1[20], step1[21]); step2[22] = _mm_sub_epi16(step1[23], step1[22]); step2[23] = _mm_add_epi16(step1[23], step1[22]); step2[24] = _mm_add_epi16(step1[24], step1[25]); step2[25] = _mm_sub_epi16(step1[24], step1[25]); step2[26] = _mm_sub_epi16(step1[27], step1[26]); step2[27] = _mm_add_epi16(step1[27], step1[26]); step2[28] = _mm_add_epi16(step1[28], step1[29]); step2[29] = _mm_sub_epi16(step1[28], step1[29]); step2[30] = _mm_sub_epi16(step1[31], step1[30]); step2[31] = _mm_add_epi16(step1[31], step1[30]); // stage 3 step1[16] = step2[16]; step1[31] = step2[31]; butterfly(step2[30], step2[17], cospi_28_64, cospi_4_64, &step1[17], &step1[30]); butterfly(step2[29], step2[18], -cospi_4_64, cospi_28_64, &step1[18], &step1[29]); step1[19] = step2[19]; step1[20] = step2[20]; butterfly(step2[26], step2[21], cospi_12_64, cospi_20_64, &step1[21], &step1[26]); butterfly(step2[25], step2[22], -cospi_20_64, cospi_12_64, &step1[22], &step1[25]); step1[23] = step2[23]; step1[24] = step2[24]; step1[27] = step2[27]; step1[28] = step2[28]; idct32_8x32_quarter_3_4_stage_4_to_7(step1, out); } void idct32_135_8x32_ssse3(const __m128i *const in /*in[32]*/, __m128i *const out /*out[32]*/) { __m128i temp[32]; idct32_135_8x32_quarter_1_2(in, temp); idct32_135_8x32_quarter_3_4(in, temp); // final stage add_sub_butterfly(temp, out, 32); } void vpx_idct32x32_135_add_ssse3(const tran_low_t *input, uint8_t *dest, int stride) { __m128i col[2][32], io[32]; int i; // rows for (i = 0; i < 2; i++) { load_transpose_16bit_8x8(&input[0], 32, &io[0]); load_transpose_16bit_8x8(&input[8], 32, &io[8]); idct32_135_8x32_ssse3(io, col[i]); input += 32 << 3; } // columns for (i = 0; i < 32; i += 8) { transpose_16bit_8x8(col[0] + i, io); transpose_16bit_8x8(col[1] + i, io + 8); idct32_135_8x32_ssse3(io, io); store_buffer_8x32(io, dest, stride); dest += 8; } }

                                                                                                                                                                                                                                                                                                                                                                                                     

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