47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
// Copyright 2015 Google Inc. 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 COPYING 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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//
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// SSE4 version of some decoding functions.
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#include "./dsp.h"
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#if defined(WEBP_USE_SSE41)
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#include <smmintrin.h>
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#include "../dec/vp8i_dec.h"
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#include "../utils/utils.h"
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static void HE16(uint8_t* dst) { // horizontal
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int j;
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const __m128i kShuffle3 = _mm_set1_epi8(3);
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for (j = 16; j > 0; --j) {
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const __m128i in = _mm_cvtsi32_si128(WebPMemToUint32(dst - 4));
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const __m128i values = _mm_shuffle_epi8(in, kShuffle3);
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_mm_storeu_si128((__m128i*)dst, values);
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dst += BPS;
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}
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}
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//------------------------------------------------------------------------------
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// Entry point
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extern void VP8DspInitSSE41(void);
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WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitSSE41(void) {
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VP8PredLuma16[3] = HE16;
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}
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#else // !WEBP_USE_SSE41
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WEBP_DSP_INIT_STUB(VP8DspInitSSE41)
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#endif // WEBP_USE_SSE41
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