1// Copyright 2015 Google Inc. All Rights Reserved.
2//
3// Use of this source code is governed by a BSD-style license
4// that can be found in the COPYING file in the root of the source
5// tree. An additional intellectual property rights grant can be found
6// in the file PATENTS. All contributing project authors may
7// be found in the AUTHORS file in the root of the source tree.
8// -----------------------------------------------------------------------------
9//
10// SSE4 version of some decoding functions.
11//
12// Author: Skal (pascal.massimino@gmail.com)
13
14#include "src/dsp/dsp.h"
15
16#if defined(WEBP_USE_SSE41)
17
18#include <smmintrin.h>
19#include "src/dec/vp8i_dec.h"
20#include "src/utils/utils.h"
21
22static void HE16_SSE41(uint8_t* dst) { // horizontal
23 int j;
24 const __m128i kShuffle3 = _mm_set1_epi8(3);
25 for (j = 16; j > 0; --j) {
26 const __m128i in = _mm_cvtsi32_si128(WebPMemToInt32(dst - 4));
27 const __m128i values = _mm_shuffle_epi8(in, kShuffle3);
28 _mm_storeu_si128((__m128i*)dst, values);
29 dst += BPS;
30 }
31}
32
33//------------------------------------------------------------------------------
34// Entry point
35
36extern void VP8DspInitSSE41(void);
37
38WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitSSE41(void) {
39 VP8PredLuma16[3] = HE16_SSE41;
40}
41
42#else // !WEBP_USE_SSE41
43
44WEBP_DSP_INIT_STUB(VP8DspInitSSE41)
45
46#endif // WEBP_USE_SSE41
47