diff options
Diffstat (limited to 'drivers/theoraplayer/src/YUV/yuv_util.c')
| -rw-r--r-- | drivers/theoraplayer/src/YUV/yuv_util.c | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/drivers/theoraplayer/src/YUV/yuv_util.c b/drivers/theoraplayer/src/YUV/yuv_util.c deleted file mode 100644 index f5bf3e5f9e..0000000000 --- a/drivers/theoraplayer/src/YUV/yuv_util.c +++ /dev/null @@ -1,39 +0,0 @@ -/************************************************************************************ -This source file is part of the Theora Video Playback Library -For latest info, see http://libtheoraplayer.googlecode.com -************************************************************************************* -Copyright (c) 2008-2014 Kresimir Spes (kspes@cateia.com) -This program is free software; you can redistribute it and/or modify it under -the terms of the BSD license: http://opensource.org/licenses/BSD-3-Clause -*************************************************************************************/ -#include "yuv_util.h" - -struct TheoraPixelTransform* incOut(struct TheoraPixelTransform* t, int n) -{ - // used for XRGB, XBGR and similar - t->out += n; - return t; -} - -void _decodeAlpha(struct TheoraPixelTransform* t, int stride) -{ - int width = t->w; - unsigned char *ySrc, *yLineEnd, *out; - int luma; - unsigned int y; - for (y = 0; y < t->h; y++) - { - ySrc = t->y + y * t->yStride + width; - out = t->out + y * stride; - - for (yLineEnd = ySrc + width; ySrc != yLineEnd; ++ySrc, out += 4) - { - luma = (*ySrc); - // because in YCbCr specification, luma values are in the range of [16, 235] - // account for 'footroom' and 'headroom' ranges while using luma values as alpha channel - if (luma <= 16) *out = 0; - else if (luma >= 235) *out = 255; - else *out = (unsigned char) (((luma - 16) * 255) / 219); - } - } -} |