dec_sse41.c (1420B)
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 #include <emmintrin.h> 18 #include <smmintrin.h> 19 20 #include "src/webp/types.h" 21 #include "src/dec/vp8i_dec.h" 22 #include "src/dsp/cpu.h" 23 #include "src/utils/utils.h" 24 25 static void HE16_SSE41(uint8_t* dst) { // horizontal 26 int j; 27 const __m128i kShuffle3 = _mm_set1_epi8(3); 28 for (j = 16; j > 0; --j) { 29 const __m128i in = _mm_cvtsi32_si128(WebPMemToInt32(dst - 4)); 30 const __m128i values = _mm_shuffle_epi8(in, kShuffle3); 31 _mm_storeu_si128((__m128i*)dst, values); 32 dst += BPS; 33 } 34 } 35 36 //------------------------------------------------------------------------------ 37 // Entry point 38 39 extern void VP8DspInitSSE41(void); 40 41 WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitSSE41(void) { 42 VP8PredLuma16[3] = HE16_SSE41; 43 } 44 45 #else // !WEBP_USE_SSE41 46 47 WEBP_DSP_INIT_STUB(VP8DspInitSSE41) 48 49 #endif // WEBP_USE_SSE41