2231669a83
Spin out highbd idct functions. BUG=webm:1412 Change-Id: I0cfe4117c00039b6778c59c022eee79ad089a2af
42 lines
1.4 KiB
C
42 lines
1.4 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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#include "./vpx_dsp_rtcd.h"
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#include "vpx_dsp/x86/inv_txfm_sse2.h"
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#include "vpx_dsp/x86/transpose_sse2.h"
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#include "vpx_dsp/x86/txfm_common_sse2.h"
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void vpx_highbd_idct32x32_1_add_sse2(const tran_low_t *input, uint16_t *dest,
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int stride, int bd) {
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__m128i dc_value, d;
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const __m128i zero = _mm_setzero_si128();
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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 a, i, j;
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tran_low_t out;
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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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a = ROUND_POWER_OF_TWO(out, 6);
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d = _mm_set1_epi32(a);
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dc_value = _mm_packs_epi32(d, d);
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for (i = 0; i < 32; ++i) {
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for (j = 0; j < 4; ++j) {
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d = _mm_loadu_si128((const __m128i *)(&dest[j * 8]));
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d = _mm_adds_epi16(d, dc_value);
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d = _mm_max_epi16(d, zero);
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d = _mm_min_epi16(d, max);
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_mm_storeu_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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