diff options
Diffstat (limited to 'recordmydesktop/src/yuv_utils.c')
| -rw-r--r-- | recordmydesktop/src/yuv_utils.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/recordmydesktop/src/yuv_utils.c b/recordmydesktop/src/yuv_utils.c new file mode 100644 index 0000000..e80c5e2 --- /dev/null +++ b/recordmydesktop/src/yuv_utils.c @@ -0,0 +1,55 @@ +/****************************************************************************** +* recordMyDesktop * +******************************************************************************* +* * +* Copyright (C) 2006,2007,2008 John Varouhakis * +* * +* * +* This program is free software; you can redistribute it and/or modify * +* it under the terms of the GNU General Public License as published by * +* the Free Software Foundation; either version 2 of the License, or * +* (at your option) any later version. * +* * +* This program 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 General Public License for more details. * +* * +* You should have received a copy of the GNU General Public License * +* along with this program; if not, write to the Free Software * +* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * +* * +* * +* * +* For further information contact me at johnvarouhakis@gmail.com * +******************************************************************************/ + +#include "yuv_utils.h" + +// Keep these global (for performance reasons I assume). +unsigned char Yr[256], Yg[256], Yb[256], + Ur[256], Ug[256], UbVr[256], + Vg[256], Vb[256]; + +void MakeMatrices (void) { + int i; + + for (i = 0; i < 256; i++) + Yr[i] = (2104.0 * i) / 8192.0 + 8.0; + for (i = 0; i < 256; i++) + Yg[i] = (4130.0 * i) / 8192.0 + 8.0; + for (i = 0; i < 256; i++) + Yb[i] = (802.0 * i) / 8192.0; + + for (i = 0; i < 256; i++) + Ur[i] = 37.8 - (1204.0 * i) / 8192.0 + 8.0; + for (i = 0; i < 256; i++) + Ug[i] = 74.2 - (2384.0 * i) / 8192.0 + 8.0; + for (i = 0; i < 256; i++) + UbVr[i] = (3598.0 * i) / 8192.0 ; + + for (i = 0; i < 256; i++) + Vg[i] = 93.8 - (3013.0 * i) / 8192.0 + 8.0; + for (i = 0; i < 256; i++) + Vb[i] = 18.2 - (585.0 * i) / 8192.0 + 8.0; +} |