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Side by Side Diff: third_party/libwebp/dsp/rescaler_sse2.c

Issue 2651883004: libwebp-0.6.0-rc1 (Closed)
Patch Set: Created 3 years, 10 months ago
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1 // Copyright 2015 Google Inc. All Rights Reserved. 1 // Copyright 2015 Google Inc. All Rights Reserved.
2 // 2 //
3 // Use of this source code is governed by a BSD-style license 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 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 5 // tree. An additional intellectual property rights grant can be found
6 // in the file PATENTS. All contributing project authors may 6 // in the file PATENTS. All contributing project authors may
7 // be found in the AUTHORS file in the root of the source tree. 7 // be found in the AUTHORS file in the root of the source tree.
8 // ----------------------------------------------------------------------------- 8 // -----------------------------------------------------------------------------
9 // 9 //
10 // SSE2 Rescaling functions 10 // SSE2 Rescaling functions
11 // 11 //
12 // Author: Skal (pascal.massimino@gmail.com) 12 // Author: Skal (pascal.massimino@gmail.com)
13 13
14 #include "./dsp.h" 14 #include "./dsp.h"
15 15
16 #if defined(WEBP_USE_SSE2) 16 #if defined(WEBP_USE_SSE2)
17 #include <emmintrin.h> 17 #include <emmintrin.h>
18 18
19 #include <assert.h> 19 #include <assert.h>
20 #include "../utils/rescaler.h" 20 #include "../utils/rescaler_utils.h"
21 #include "../utils/utils.h" 21 #include "../utils/utils.h"
22 22
23 //------------------------------------------------------------------------------ 23 //------------------------------------------------------------------------------
24 // Implementations of critical functions ImportRow / ExportRow 24 // Implementations of critical functions ImportRow / ExportRow
25 25
26 #define ROUNDER (WEBP_RESCALER_ONE >> 1) 26 #define ROUNDER (WEBP_RESCALER_ONE >> 1)
27 #define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX) 27 #define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX)
28 28
29 // input: 8 bytes ABCDEFGH -> output: A0E0B0F0C0G0D0H0 29 // input: 8 bytes ABCDEFGH -> output: A0E0B0F0C0G0D0H0
30 static void LoadTwoPixels(const uint8_t* const src, __m128i* out) { 30 static void LoadTwoPixels(const uint8_t* const src, __m128i* out) {
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366 WebPRescalerImportRowShrink = RescalerImportRowShrinkSSE2; 366 WebPRescalerImportRowShrink = RescalerImportRowShrinkSSE2;
367 WebPRescalerExportRowExpand = RescalerExportRowExpandSSE2; 367 WebPRescalerExportRowExpand = RescalerExportRowExpandSSE2;
368 WebPRescalerExportRowShrink = RescalerExportRowShrinkSSE2; 368 WebPRescalerExportRowShrink = RescalerExportRowShrinkSSE2;
369 } 369 }
370 370
371 #else // !WEBP_USE_SSE2 371 #else // !WEBP_USE_SSE2
372 372
373 WEBP_DSP_INIT_STUB(WebPRescalerDspInitSSE2) 373 WEBP_DSP_INIT_STUB(WebPRescalerDspInitSSE2)
374 374
375 #endif // WEBP_USE_SSE2 375 #endif // WEBP_USE_SSE2
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