ref: 4b357bd15ba6a45687a4b01b14bca46e6cbe6cd2
dir: /vpx_dsp/x86/inv_txfm_ssse3.h/
/* * 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. */ #ifndef VPX_VPX_DSP_X86_INV_TXFM_SSSE3_H_ #define VPX_VPX_DSP_X86_INV_TXFM_SSSE3_H_ #include <tmmintrin.h> #include "./vpx_dsp_rtcd.h" #include "vpx_dsp/x86/inv_txfm_sse2.h" #include "vpx_dsp/x86/transpose_sse2.h" #include "vpx_dsp/x86/txfm_common_sse2.h" static INLINE void idct8x8_12_add_kernel_ssse3(__m128i *const io /* io[8] */) { const __m128i cp_28d_4d = dual_set_epi16(2 * cospi_28_64, 2 * cospi_4_64); const __m128i cp_n20d_12d = dual_set_epi16(-2 * cospi_20_64, 2 * cospi_12_64); const __m128i cp_8d_24d = dual_set_epi16(2 * cospi_8_64, 2 * cospi_24_64); const __m128i cp_16_16 = _mm_set1_epi16(cospi_16_64); const __m128i cp_16_n16 = pair_set_epi16(cospi_16_64, -cospi_16_64); const __m128i cospi_16_64d = _mm_set1_epi16((int16_t)(2 * cospi_16_64)); const __m128i cospi_28_64d = _mm_set1_epi16((int16_t)(2 * cospi_28_64)); const __m128i cospi_4_64d = _mm_set1_epi16((int16_t)(2 * cospi_4_64)); const __m128i cospi_n20_64d = _mm_set1_epi16((int16_t)(-2 * cospi_20_64)); const __m128i cospi_12_64d = _mm_set1_epi16((int16_t)(2 * cospi_12_64)); const __m128i cospi_24_64d = _mm_set1_epi16((int16_t)(2 * cospi_24_64)); const __m128i cospi_8_64d = _mm_set1_epi16((int16_t)(2 * cospi_8_64)); __m128i step1[8], step2[8], tmp[4]; // pass 1 transpose_16bit_4x4(io, io); // io[0]: 00 10 20 30 01 11 21 31 // io[1]: 02 12 22 32 03 13 23 33 // stage 1 tmp[0] = _mm_unpacklo_epi64(io[0], io[0]); tmp[1] = _mm_unpackhi_epi64(io[0], io[0]); tmp[2] = _mm_unpacklo_epi64(io[1], io[1]); tmp[3] = _mm_unpackhi_epi64(io[1], io[1]); step1[4] = _mm_mulhrs_epi16(tmp[1], cp_28d_4d); // step1 4&7 step1[5] = _mm_mulhrs_epi16(tmp[3], cp_n20d_12d); // step1 5&6 // stage 2 step2[0] = _mm_mulhrs_epi16(tmp[0], cospi_16_64d); // step2 0&1 step2[2] = _mm_mulhrs_epi16(tmp[2], cp_8d_24d); // step2 3&2 step2[4] = _mm_add_epi16(step1[4], step1[5]); // step2 4&7 step2[5] = _mm_sub_epi16(step1[4], step1[5]); // step2 5&6 step2[6] = _mm_unpackhi_epi64(step2[5], step2[5]); // step2 6 // stage 3 tmp[0] = _mm_unpacklo_epi16(step2[6], step2[5]); step1[5] = idct_calc_wraplow_sse2(cp_16_n16, cp_16_16, tmp[0]); // step1 5&6 tmp[0] = _mm_add_epi16(step2[0], step2[2]); // step1 0&1 tmp[1] = _mm_sub_epi16(step2[0], step2[2]); // step1 3&2 step1[2] = _mm_unpackhi_epi64(tmp[1], tmp[0]); // step1 2&1 step1[3] = _mm_unpacklo_epi64(tmp[1], tmp[0]); // step1 3&0 // stage 4 tmp[0] = _mm_add_epi16(step1[3], step2[4]); // output 3&0 tmp[1] = _mm_add_epi16(step1[2], step1[5]); // output 2&1 tmp[2] = _mm_sub_epi16(step1[3], step2[4]); // output 4&7 tmp[3] = _mm_sub_epi16(step1[2], step1[5]); // output 5&6 // pass 2 idct8x8_12_transpose_16bit_4x8(tmp, io); // stage 1 step1[4] = _mm_mulhrs_epi16(io[1], cospi_28_64d); step1[7] = _mm_mulhrs_epi16(io[1], cospi_4_64d); step1[5] = _mm_mulhrs_epi16(io[3], cospi_n20_64d); step1[6] = _mm_mulhrs_epi16(io[3], cospi_12_64d); // stage 2 step2[0] = _mm_mulhrs_epi16(io[0], cospi_16_64d); // step2[1] = step2[0] step2[2] = _mm_mulhrs_epi16(io[2], cospi_24_64d); step2[3] = _mm_mulhrs_epi16(io[2], cospi_8_64d); 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 3 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]); butterfly(step2[6], step2[5], cospi_16_64, cospi_16_64, &step1[5], &step1[6]); // stage 4 io[0] = _mm_add_epi16(step1[0], step2[7]); io[1] = _mm_add_epi16(step1[1], step1[6]); io[2] = _mm_add_epi16(step1[2], step1[5]); io[3] = _mm_add_epi16(step1[3], step2[4]); io[4] = _mm_sub_epi16(step1[3], step2[4]); io[5] = _mm_sub_epi16(step1[2], step1[5]); io[6] = _mm_sub_epi16(step1[1], step1[6]); io[7] = _mm_sub_epi16(step1[0], step2[7]); } void idct32_135_8x32_ssse3(const __m128i *const in, __m128i *const out); #endif // VPX_VPX_DSP_X86_INV_TXFM_SSSE3_H_