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Diffstat (limited to 'vpx_dsp/x86/quantize_sse2.h')
-rw-r--r-- | vpx_dsp/x86/quantize_sse2.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/vpx_dsp/x86/quantize_sse2.h b/vpx_dsp/x86/quantize_sse2.h new file mode 100644 index 000000000..1f8587810 --- /dev/null +++ b/vpx_dsp/x86/quantize_sse2.h @@ -0,0 +1,82 @@ +/* + * 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_QUANTIZE_SSE2_H_ +#define VPX_VPX_DSP_X86_QUANTIZE_SSE2_H_ + +#include <emmintrin.h> + +#include "./vpx_config.h" +#include "vpx/vpx_integer.h" + +static INLINE void load_b_values(const int16_t *zbin_ptr, __m128i *zbin, + const int16_t *round_ptr, __m128i *round, + const int16_t *quant_ptr, __m128i *quant, + const int16_t *dequant_ptr, __m128i *dequant, + const int16_t *shift_ptr, __m128i *shift) { + *zbin = _mm_load_si128((const __m128i *)zbin_ptr); + *round = _mm_load_si128((const __m128i *)round_ptr); + *quant = _mm_load_si128((const __m128i *)quant_ptr); + *zbin = _mm_sub_epi16(*zbin, _mm_set1_epi16(1)); + *dequant = _mm_load_si128((const __m128i *)dequant_ptr); + *shift = _mm_load_si128((const __m128i *)shift_ptr); +} + +// With ssse3 and later abs() and sign() are preferred. +static INLINE __m128i invert_sign_sse2(__m128i a, __m128i sign) { + a = _mm_xor_si128(a, sign); + return _mm_sub_epi16(a, sign); +} + +static INLINE void calculate_qcoeff(__m128i *coeff, const __m128i round, + const __m128i quant, const __m128i shift) { + __m128i tmp, qcoeff; + qcoeff = _mm_adds_epi16(*coeff, round); + tmp = _mm_mulhi_epi16(qcoeff, quant); + qcoeff = _mm_add_epi16(tmp, qcoeff); + *coeff = _mm_mulhi_epi16(qcoeff, shift); +} + +static INLINE __m128i calculate_dqcoeff(__m128i qcoeff, __m128i dequant) { + return _mm_mullo_epi16(qcoeff, dequant); +} + +// Scan 16 values for eob reference in scan. Use masks (-1) from comparing to +// zbin to add 1 to the index in 'scan'. +static INLINE __m128i scan_for_eob(__m128i *coeff0, __m128i *coeff1, + const __m128i zbin_mask0, + const __m128i zbin_mask1, + const int16_t *scan, const int index, + const __m128i zero) { + const __m128i zero_coeff0 = _mm_cmpeq_epi16(*coeff0, zero); + const __m128i zero_coeff1 = _mm_cmpeq_epi16(*coeff1, zero); + __m128i scan0 = _mm_load_si128((const __m128i *)(scan + index)); + __m128i scan1 = _mm_load_si128((const __m128i *)(scan + index + 8)); + __m128i eob0, eob1; + // Add one to convert from indices to counts + scan0 = _mm_sub_epi16(scan0, zbin_mask0); + scan1 = _mm_sub_epi16(scan1, zbin_mask1); + eob0 = _mm_andnot_si128(zero_coeff0, scan0); + eob1 = _mm_andnot_si128(zero_coeff1, scan1); + return _mm_max_epi16(eob0, eob1); +} + +static INLINE int16_t accumulate_eob(__m128i eob) { + __m128i eob_shuffled; + eob_shuffled = _mm_shuffle_epi32(eob, 0xe); + eob = _mm_max_epi16(eob, eob_shuffled); + eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); + eob = _mm_max_epi16(eob, eob_shuffled); + eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); + eob = _mm_max_epi16(eob, eob_shuffled); + return _mm_extract_epi16(eob, 1); +} + +#endif // VPX_VPX_DSP_X86_QUANTIZE_SSE2_H_ |