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 (at) gmail.com) 13 14 #include "./dsp.h" 15 16 #if defined(WEBP_USE_SSE41) 17 18 #include <smmintrin.h> 19 #include "../dec/vp8i_dec.h" 20 #include "../utils/utils.h" 21 22 static void HE16(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(WebPMemToUint32(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 36 extern void VP8DspInitSSE41(void); 37 38 WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitSSE41(void) { 39 VP8PredLuma16[3] = HE16; 40 } 41 42 #else // !WEBP_USE_SSE41 43 44 WEBP_DSP_INIT_STUB(VP8DspInitSSE41) 45 46 #endif // WEBP_USE_SSE41 47
