diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/x86/highbd_idct4x4_add_sse2.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/x86/highbd_idct4x4_add_sse2.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/x86/highbd_idct4x4_add_sse2.c b/media/libvpx/libvpx/vpx_dsp/x86/highbd_idct4x4_add_sse2.c new file mode 100644 index 0000000000..b9c8884f99 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/x86/highbd_idct4x4_add_sse2.c @@ -0,0 +1,160 @@ +/* + * 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. + */ + +#include <emmintrin.h> // SSE2 + +#include "./vpx_dsp_rtcd.h" +#include "vpx_dsp/x86/highbd_inv_txfm_sse2.h" +#include "vpx_dsp/x86/inv_txfm_sse2.h" +#include "vpx_dsp/x86/transpose_sse2.h" + +static INLINE __m128i dct_const_round_shift_4_sse2(const __m128i in0, + const __m128i in1) { + const __m128i t0 = _mm_unpacklo_epi32(in0, in1); // 0, 1 + const __m128i t1 = _mm_unpackhi_epi32(in0, in1); // 2, 3 + const __m128i t2 = _mm_unpacklo_epi64(t0, t1); // 0, 1, 2, 3 + return dct_const_round_shift_sse2(t2); +} + +static INLINE void highbd_idct4_small_sse2(__m128i *const io) { + const __m128i cospi_p16_p16 = _mm_setr_epi32(cospi_16_64, 0, cospi_16_64, 0); + const __m128i cospi_p08_p08 = _mm_setr_epi32(cospi_8_64, 0, cospi_8_64, 0); + const __m128i cospi_p24_p24 = _mm_setr_epi32(cospi_24_64, 0, cospi_24_64, 0); + __m128i temp1[4], temp2[4], step[4]; + + transpose_32bit_4x4(io, io); + + // Note: There is no 32-bit signed multiply SIMD instruction in SSE2. + // _mm_mul_epu32() is used which can only guarantee the lower 32-bit + // (signed) result is meaningful, which is enough in this function. + + // stage 1 + temp1[0] = _mm_add_epi32(io[0], io[2]); // input[0] + input[2] + temp2[0] = _mm_sub_epi32(io[0], io[2]); // input[0] - input[2] + temp1[1] = _mm_srli_si128(temp1[0], 4); // 1, 3 + temp2[1] = _mm_srli_si128(temp2[0], 4); // 1, 3 + temp1[0] = _mm_mul_epu32(temp1[0], cospi_p16_p16); // ([0] + [2])*cospi_16_64 + temp1[1] = _mm_mul_epu32(temp1[1], cospi_p16_p16); // ([0] + [2])*cospi_16_64 + temp2[0] = _mm_mul_epu32(temp2[0], cospi_p16_p16); // ([0] - [2])*cospi_16_64 + temp2[1] = _mm_mul_epu32(temp2[1], cospi_p16_p16); // ([0] - [2])*cospi_16_64 + step[0] = dct_const_round_shift_4_sse2(temp1[0], temp1[1]); + step[1] = dct_const_round_shift_4_sse2(temp2[0], temp2[1]); + + temp1[3] = _mm_srli_si128(io[1], 4); + temp2[3] = _mm_srli_si128(io[3], 4); + temp1[0] = _mm_mul_epu32(io[1], cospi_p24_p24); // input[1] * cospi_24_64 + temp1[1] = _mm_mul_epu32(temp1[3], cospi_p24_p24); // input[1] * cospi_24_64 + temp2[0] = _mm_mul_epu32(io[1], cospi_p08_p08); // input[1] * cospi_8_64 + temp2[1] = _mm_mul_epu32(temp1[3], cospi_p08_p08); // input[1] * cospi_8_64 + temp1[2] = _mm_mul_epu32(io[3], cospi_p08_p08); // input[3] * cospi_8_64 + temp1[3] = _mm_mul_epu32(temp2[3], cospi_p08_p08); // input[3] * cospi_8_64 + temp2[2] = _mm_mul_epu32(io[3], cospi_p24_p24); // input[3] * cospi_24_64 + temp2[3] = _mm_mul_epu32(temp2[3], cospi_p24_p24); // input[3] * cospi_24_64 + temp1[0] = _mm_sub_epi64(temp1[0], temp1[2]); // [1]*cospi_24 - [3]*cospi_8 + temp1[1] = _mm_sub_epi64(temp1[1], temp1[3]); // [1]*cospi_24 - [3]*cospi_8 + temp2[0] = _mm_add_epi64(temp2[0], temp2[2]); // [1]*cospi_8 + [3]*cospi_24 + temp2[1] = _mm_add_epi64(temp2[1], temp2[3]); // [1]*cospi_8 + [3]*cospi_24 + step[2] = dct_const_round_shift_4_sse2(temp1[0], temp1[1]); + step[3] = dct_const_round_shift_4_sse2(temp2[0], temp2[1]); + + // stage 2 + io[0] = _mm_add_epi32(step[0], step[3]); // step[0] + step[3] + io[1] = _mm_add_epi32(step[1], step[2]); // step[1] + step[2] + io[2] = _mm_sub_epi32(step[1], step[2]); // step[1] - step[2] + io[3] = _mm_sub_epi32(step[0], step[3]); // step[0] - step[3] +} + +static INLINE void highbd_idct4_large_sse2(__m128i *const io) { + __m128i step[4]; + + transpose_32bit_4x4(io, io); + + // stage 1 + highbd_butterfly_cospi16_sse2(io[0], io[2], &step[0], &step[1]); + highbd_butterfly_sse2(io[1], io[3], cospi_24_64, cospi_8_64, &step[2], + &step[3]); + + // stage 2 + io[0] = _mm_add_epi32(step[0], step[3]); // step[0] + step[3] + io[1] = _mm_add_epi32(step[1], step[2]); // step[1] + step[2] + io[2] = _mm_sub_epi32(step[1], step[2]); // step[1] - step[2] + io[3] = _mm_sub_epi32(step[0], step[3]); // step[0] - step[3] +} + +void vpx_highbd_idct4x4_16_add_sse2(const tran_low_t *input, uint16_t *dest, + int stride, int bd) { + int16_t max = 0, min = 0; + __m128i io[4], io_short[2]; + + io[0] = _mm_load_si128((const __m128i *)(input + 0)); + io[1] = _mm_load_si128((const __m128i *)(input + 4)); + io[2] = _mm_load_si128((const __m128i *)(input + 8)); + io[3] = _mm_load_si128((const __m128i *)(input + 12)); + + io_short[0] = _mm_packs_epi32(io[0], io[1]); + io_short[1] = _mm_packs_epi32(io[2], io[3]); + + if (bd != 8) { + __m128i max_input, min_input; + + max_input = _mm_max_epi16(io_short[0], io_short[1]); + min_input = _mm_min_epi16(io_short[0], io_short[1]); + max_input = _mm_max_epi16(max_input, _mm_srli_si128(max_input, 8)); + min_input = _mm_min_epi16(min_input, _mm_srli_si128(min_input, 8)); + max_input = _mm_max_epi16(max_input, _mm_srli_si128(max_input, 4)); + min_input = _mm_min_epi16(min_input, _mm_srli_si128(min_input, 4)); + max_input = _mm_max_epi16(max_input, _mm_srli_si128(max_input, 2)); + min_input = _mm_min_epi16(min_input, _mm_srli_si128(min_input, 2)); + max = (int16_t)_mm_extract_epi16(max_input, 0); + min = (int16_t)_mm_extract_epi16(min_input, 0); + } + + if (bd == 8 || (max < 4096 && min >= -4096)) { + idct4_sse2(io_short); + idct4_sse2(io_short); + io_short[0] = _mm_add_epi16(io_short[0], _mm_set1_epi16(8)); + io_short[1] = _mm_add_epi16(io_short[1], _mm_set1_epi16(8)); + io[0] = _mm_srai_epi16(io_short[0], 4); + io[1] = _mm_srai_epi16(io_short[1], 4); + } else { + if (max < 32767 && min > -32768) { + highbd_idct4_small_sse2(io); + highbd_idct4_small_sse2(io); + } else { + highbd_idct4_large_sse2(io); + highbd_idct4_large_sse2(io); + } + io[0] = wraplow_16bit_shift4(io[0], io[1], _mm_set1_epi32(8)); + io[1] = wraplow_16bit_shift4(io[2], io[3], _mm_set1_epi32(8)); + } + + recon_and_store_4x4(io, dest, stride, bd); +} + +void vpx_highbd_idct4x4_1_add_sse2(const tran_low_t *input, uint16_t *dest, + int stride, int bd) { + int a1, i; + tran_low_t out; + __m128i dc, d; + + out = HIGHBD_WRAPLOW( + dct_const_round_shift(input[0] * (tran_high_t)cospi_16_64), bd); + out = + HIGHBD_WRAPLOW(dct_const_round_shift(out * (tran_high_t)cospi_16_64), bd); + a1 = ROUND_POWER_OF_TWO(out, 4); + dc = _mm_set1_epi16(a1); + + for (i = 0; i < 4; ++i) { + d = _mm_loadl_epi64((const __m128i *)dest); + d = add_clamp(d, dc, bd); + _mm_storel_epi64((__m128i *)dest, d); + dest += stride; + } +} |