chromium/third_party/libwebp/src/src/dsp/alpha_processing_sse41.c

// 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.
// -----------------------------------------------------------------------------
//
// Utilities for processing transparent channel, SSE4.1 variant.
//
// Author: Skal ([email protected])

#include "src/dsp/dsp.h"

#if defined(WEBP_USE_SSE41)

#include <smmintrin.h>

//------------------------------------------------------------------------------

static int ExtractAlpha_SSE41(const uint8_t* WEBP_RESTRICT argb,
                              int argb_stride, int width, int height,
                              uint8_t* WEBP_RESTRICT alpha, int alpha_stride) { … }

//------------------------------------------------------------------------------
// Entry point

extern void WebPInitAlphaProcessingSSE41(void);

WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE41(void) { … }

#else  // !WEBP_USE_SSE41

WEBP_DSP_INIT_STUB(WebPInitAlphaProcessingSSE41)

#endif  // WEBP_USE_SSE41