mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
2.8 KiB
98 lines
2.8 KiB
/* |
|
* Copyright (c) 2002-2012 Michael Niedermayer |
|
* Copyright (C) 2012 Ronald S. Bultje |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "bit_depth_template.c" |
|
void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t *src, |
|
ptrdiff_t linesize_arg, |
|
int block_w, int block_h, |
|
int src_x, int src_y, int w, int h) |
|
{ |
|
int x, y; |
|
int start_y, start_x, end_y, end_x; |
|
emuedge_linesize_type linesize = linesize_arg; |
|
|
|
if (!w || !h) |
|
return; |
|
|
|
if (src_y >= h) { |
|
src -= src_y * linesize; |
|
src += (h - 1) * linesize; |
|
src_y = h - 1; |
|
} else if (src_y <= -block_h) { |
|
src -= src_y * linesize; |
|
src += (1 - block_h) * linesize; |
|
src_y = 1 - block_h; |
|
} |
|
if (src_x >= w) { |
|
src += (w - 1 - src_x) * sizeof(pixel); |
|
src_x = w - 1; |
|
} else if (src_x <= -block_w) { |
|
src += (1 - block_w - src_x) * sizeof(pixel); |
|
src_x = 1 - block_w; |
|
} |
|
|
|
start_y = FFMAX(0, -src_y); |
|
start_x = FFMAX(0, -src_x); |
|
end_y = FFMIN(block_h, h-src_y); |
|
end_x = FFMIN(block_w, w-src_x); |
|
av_assert2(start_y < end_y && block_h); |
|
av_assert2(start_x < end_x && block_w); |
|
|
|
w = end_x - start_x; |
|
src += start_y * linesize + start_x * sizeof(pixel); |
|
buf += start_x * sizeof(pixel); |
|
|
|
// top |
|
for (y = 0; y < start_y; y++) { |
|
memcpy(buf, src, w * sizeof(pixel)); |
|
buf += linesize; |
|
} |
|
|
|
// copy existing part |
|
for (; y < end_y; y++) { |
|
memcpy(buf, src, w * sizeof(pixel)); |
|
src += linesize; |
|
buf += linesize; |
|
} |
|
|
|
// bottom |
|
src -= linesize; |
|
for (; y < block_h; y++) { |
|
memcpy(buf, src, w * sizeof(pixel)); |
|
buf += linesize; |
|
} |
|
|
|
buf -= block_h * linesize + start_x * sizeof(pixel); |
|
while (block_h--) { |
|
pixel *bufp = (pixel *) buf; |
|
|
|
// left |
|
for(x = 0; x < start_x; x++) { |
|
bufp[x] = bufp[start_x]; |
|
} |
|
|
|
// right |
|
for (x = end_x; x < block_w; x++) { |
|
bufp[x] = bufp[end_x - 1]; |
|
} |
|
buf += linesize; |
|
} |
|
}
|
|
|