1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "vp8/common/loopfilter.h" 12 #include "vpx_scale/yv12config.h" 13 14 extern void vp8_memcpy_partial_neon(unsigned char *dst_ptr, 15 unsigned char *src_ptr, 16 int sz); 17 18 19 void vp8_yv12_copy_partial_frame_neon(YV12_BUFFER_CONFIG *src_ybc, 20 YV12_BUFFER_CONFIG *dst_ybc) 21 { 22 unsigned char *src_y, *dst_y; 23 int yheight; 24 int ystride; 25 int yoffset; 26 int linestocopy; 27 28 yheight = src_ybc->y_height; 29 ystride = src_ybc->y_stride; 30 31 /* number of MB rows to use in partial filtering */ 32 linestocopy = (yheight >> 4) / PARTIAL_FRAME_FRACTION; 33 linestocopy = linestocopy ? linestocopy << 4 : 16; /* 16 lines per MB */ 34 35 /* Copy extra 4 so that full filter context is available if filtering done 36 * on the copied partial frame and not original. Partial filter does mb 37 * filtering for top row also, which can modify3 pixels above. 38 */ 39 linestocopy += 4; 40 /* partial image starts at ~middle of frame (macroblock border) */ 41 yoffset = ystride * (((yheight >> 5) * 16) - 4); 42 src_y = src_ybc->y_buffer + yoffset; 43 dst_y = dst_ybc->y_buffer + yoffset; 44 45 vp8_memcpy_partial_neon(dst_y, src_y, ystride * linestocopy); 46 } 47
