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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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