1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_ 6 #define MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_ 7 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 // The header file for ASM functions that convert a row of RGB pixels with SSSE3 13 // instructions so we can call them from C++ code. These functions are 14 // implemented in "convert_rgb_to_yuv_ssse3.asm". 15 16 // We use ptrdiff_t instead of int for yasm routine parameters to portably 17 // sign-extend int. On Win64, MSVC does not sign-extend the value in the stack 18 // home of int function parameters, and yasm routines are unaware of this lack 19 // of extension and fault. ptrdiff_t is portably sign-extended and fixes this 20 // issue on at least Win64. 21 22 // Convert a row of 24-bit RGB pixels to YV12 pixels. 23 void ConvertRGBToYUVRow_SSSE3(const uint8* rgb, 24 uint8* y, 25 uint8* u, 26 uint8* v, 27 ptrdiff_t width); 28 29 // Convert a row of 32-bit RGB pixels to YV12 pixels. 30 void ConvertARGBToYUVRow_SSSE3(const uint8* argb, 31 uint8* y, 32 uint8* u, 33 uint8* v, 34 ptrdiff_t width); 35 36 #ifdef __cplusplus 37 } 38 #endif 39 40 #endif // MEDIA_BASE_SIMD_CONVERT_RGB_TO_YUV_SSSE3_H_ 41
