71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_
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#define VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_
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#include <emmintrin.h> // SSE2
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#include "./vpx_config.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_dsp/inv_txfm.h"
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#include "vpx_dsp/x86/txfm_common_sse2.h"
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static INLINE __m128i add_dc_clamp(const __m128i *const min,
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const __m128i *const max,
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const __m128i *const dc,
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const __m128i *const in) {
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__m128i out;
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out = _mm_adds_epi16(*in, *dc);
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out = _mm_max_epi16(out, *min);
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out = _mm_min_epi16(out, *max);
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return out;
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}
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static INLINE void highbd_idct_1_add_kernel(const tran_low_t *input,
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uint16_t *dest, int stride, int bd,
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const int size) {
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const __m128i zero = _mm_setzero_si128();
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// Faster than _mm_set1_epi16((1 << bd) - 1).
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const __m128i one = _mm_set1_epi16(1);
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const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
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int a1, i, j;
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tran_low_t out;
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__m128i dc, d;
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out = HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd);
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out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd);
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a1 = ROUND_POWER_OF_TWO(out, (size == 8) ? 5 : 6);
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dc = _mm_set1_epi16(a1);
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for (i = 0; i < size; ++i) {
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for (j = 0; j < (size >> 3); ++j) {
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d = _mm_load_si128((const __m128i *)(&dest[j * 8]));
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d = add_dc_clamp(&zero, &max, &dc, &d);
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_mm_store_si128((__m128i *)(&dest[j * 8]), d);
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}
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dest += stride;
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}
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}
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static INLINE __m128i clamp_high_sse2(__m128i value, int bd) {
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__m128i ubounded, retval;
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const __m128i zero = _mm_set1_epi16(0);
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const __m128i one = _mm_set1_epi16(1);
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const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
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ubounded = _mm_cmpgt_epi16(value, max);
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retval = _mm_andnot_si128(ubounded, value);
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ubounded = _mm_and_si128(ubounded, max);
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retval = _mm_or_si128(retval, ubounded);
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retval = _mm_and_si128(retval, _mm_cmpgt_epi16(retval, zero));
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return retval;
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}
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#endif // VPX_DSP_X86_HIGHBD_INV_TXFM_SSE2_H_
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