Source code
Revision control
Copy as Markdown
Other Tools
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING 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.
// -----------------------------------------------------------------------------
//
// SSE4 version of some decoding functions.
//
// Author: Skal (pascal.massimino@gmail.com)
#include "src/dsp/dsp.h"
#if defined(WEBP_USE_SSE41)
#include <smmintrin.h>
#include "src/dec/vp8i_dec.h"
#include "src/utils/utils.h"
static void HE16_SSE41(uint8_t* dst) { // horizontal
int j;
const __m128i kShuffle3 = _mm_set1_epi8(3);
for (j = 16; j > 0; --j) {
const __m128i in = _mm_cvtsi32_si128(WebPMemToInt32(dst - 4));
const __m128i values = _mm_shuffle_epi8(in, kShuffle3);
_mm_storeu_si128((__m128i*)dst, values);
dst += BPS;
}
}
//------------------------------------------------------------------------------
// Entry point
extern void VP8DspInitSSE41(void);
WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitSSE41(void) {
VP8PredLuma16[3] = HE16_SSE41;
}
#else // !WEBP_USE_SSE41
WEBP_DSP_INIT_STUB(VP8DspInitSSE41)
#endif // WEBP_USE_SSE41