1 // Copyright (c) 2011 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 #include "media/base/simd/filter_yuv.h" 6 7 namespace media { 8 9 void FilterYUVRows_C(uint8* ybuf, const uint8* y0_ptr, const uint8* y1_ptr, 10 int source_width, int source_y_fraction) { 11 int y1_fraction = source_y_fraction; 12 int y0_fraction = 256 - y1_fraction; 13 uint8* end = ybuf + source_width; 14 uint8* rounded_end = ybuf + (source_width & ~7); 15 16 while (ybuf < rounded_end) { 17 ybuf[0] = (y0_ptr[0] * y0_fraction + y1_ptr[0] * y1_fraction) >> 8; 18 ybuf[1] = (y0_ptr[1] * y0_fraction + y1_ptr[1] * y1_fraction) >> 8; 19 ybuf[2] = (y0_ptr[2] * y0_fraction + y1_ptr[2] * y1_fraction) >> 8; 20 ybuf[3] = (y0_ptr[3] * y0_fraction + y1_ptr[3] * y1_fraction) >> 8; 21 ybuf[4] = (y0_ptr[4] * y0_fraction + y1_ptr[4] * y1_fraction) >> 8; 22 ybuf[5] = (y0_ptr[5] * y0_fraction + y1_ptr[5] * y1_fraction) >> 8; 23 ybuf[6] = (y0_ptr[6] * y0_fraction + y1_ptr[6] * y1_fraction) >> 8; 24 ybuf[7] = (y0_ptr[7] * y0_fraction + y1_ptr[7] * y1_fraction) >> 8; 25 y0_ptr += 8; 26 y1_ptr += 8; 27 ybuf += 8; 28 } 29 30 while (ybuf < end) { 31 ybuf[0] = (y0_ptr[0] * y0_fraction + y1_ptr[0] * y1_fraction) >> 8; 32 ++ybuf; 33 ++y0_ptr; 34 ++y1_ptr; 35 } 36 } 37 38 } // namespace media 39
