diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/x86/convolve_sse2.h')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/x86/convolve_sse2.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/x86/convolve_sse2.h b/media/libvpx/libvpx/vpx_dsp/x86/convolve_sse2.h new file mode 100644 index 0000000000..8443546394 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/x86/convolve_sse2.h @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2018 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_CONVOLVE_SSE2_H_ +#define VPX_VPX_DSP_X86_CONVOLVE_SSE2_H_ + +#include <emmintrin.h> // SSE2 + +#include "./vpx_config.h" + +// Interprets the input register as 16-bit words 7 6 5 4 3 2 1 0, then returns +// values at index 2 and 3 to return 3 2 3 2 3 2 3 2 as 16-bit words +static INLINE __m128i extract_quarter_2_epi16_sse2(const __m128i *const reg) { + __m128i tmp = _mm_unpacklo_epi32(*reg, *reg); + return _mm_unpackhi_epi64(tmp, tmp); +} + +// Interprets the input register as 16-bit words 7 6 5 4 3 2 1 0, then returns +// values at index 2 and 3 to return 5 4 5 4 5 4 5 4 as 16-bit words. +static INLINE __m128i extract_quarter_3_epi16_sse2(const __m128i *const reg) { + __m128i tmp = _mm_unpackhi_epi32(*reg, *reg); + return _mm_unpacklo_epi64(tmp, tmp); +} + +// Interprets src as 8-bit words, zero extends to form 16-bit words, then +// multiplies with ker and add the adjacent results to form 32-bit words. +// Finally adds the result from 1 and 2 together. +static INLINE __m128i mm_madd_add_epi8_sse2(const __m128i *const src_1, + const __m128i *const src_2, + const __m128i *const ker_1, + const __m128i *const ker_2) { + const __m128i src_1_half = _mm_unpacklo_epi8(*src_1, _mm_setzero_si128()); + const __m128i src_2_half = _mm_unpacklo_epi8(*src_2, _mm_setzero_si128()); + const __m128i madd_1 = _mm_madd_epi16(src_1_half, *ker_1); + const __m128i madd_2 = _mm_madd_epi16(src_2_half, *ker_2); + return _mm_add_epi32(madd_1, madd_2); +} + +// Interprets src as 16-bit words, then multiplies with ker and add the +// adjacent results to form 32-bit words. Finally adds the result from 1 and 2 +// together. +static INLINE __m128i mm_madd_add_epi16_sse2(const __m128i *const src_1, + const __m128i *const src_2, + const __m128i *const ker_1, + const __m128i *const ker_2) { + const __m128i madd_1 = _mm_madd_epi16(*src_1, *ker_1); + const __m128i madd_2 = _mm_madd_epi16(*src_2, *ker_2); + return _mm_add_epi32(madd_1, madd_2); +} + +static INLINE __m128i mm_madd_packs_epi16_sse2(const __m128i *const src_0, + const __m128i *const src_1, + const __m128i *const ker) { + const __m128i madd_1 = _mm_madd_epi16(*src_0, *ker); + const __m128i madd_2 = _mm_madd_epi16(*src_1, *ker); + return _mm_packs_epi32(madd_1, madd_2); +} + +// Interleaves src_1 and src_2 +static INLINE __m128i mm_zip_epi32_sse2(const __m128i *const src_1, + const __m128i *const src_2) { + const __m128i tmp_1 = _mm_unpacklo_epi32(*src_1, *src_2); + const __m128i tmp_2 = _mm_unpackhi_epi32(*src_1, *src_2); + return _mm_packs_epi32(tmp_1, tmp_2); +} + +static INLINE __m128i mm_round_epi32_sse2(const __m128i *const src, + const __m128i *const half_depth, + const int depth) { + const __m128i nearest_src = _mm_add_epi32(*src, *half_depth); + return _mm_srai_epi32(nearest_src, depth); +} + +static INLINE __m128i mm_round_epi16_sse2(const __m128i *const src, + const __m128i *const half_depth, + const int depth) { + const __m128i nearest_src = _mm_adds_epi16(*src, *half_depth); + return _mm_srai_epi16(nearest_src, depth); +} + +#endif // VPX_VPX_DSP_X86_CONVOLVE_SSE2_H_ |