diff options
Diffstat (limited to 'recordmydesktop/src/bgr_to_yuv.c')
| -rw-r--r-- | recordmydesktop/src/bgr_to_yuv.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/recordmydesktop/src/bgr_to_yuv.c b/recordmydesktop/src/bgr_to_yuv.c new file mode 100644 index 0000000..9441e5d --- /dev/null +++ b/recordmydesktop/src/bgr_to_yuv.c @@ -0,0 +1,74 @@ +/********************************************************************************* +* recordMyDesktop * +********************************************************************************** +* * +* Copyright (C) 2006 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 biocrasher@gmail.com * +**********************************************************************************/ + + +#include <recordmydesktop.h> + +void XImageToYUV(XImage *imgz,yuv_buffer *yuv){ + unsigned char *dtap=(unsigned char *)imgz->data; + int i,k,j=0; + + for(k=0;k<(imgz->width*imgz->height);k++){ + yuv->y[k]=min(abs(dtap[(k*4)+2] * 2104 + dtap[(k*4)+1] * 4130 + dtap[(k*4)] * 802 + 4096 + 131072) >> 13, 235); + } + + for(i=0;i<(imgz->height);i+=2){ + for(k=0;k<(imgz->width);k+=2){ + yuv->u[j]=min(abs(dtap[i*imgz->bytes_per_line+k*4+2] * -1214 + dtap[i*imgz->bytes_per_line+k*4+1] * -2384 + dtap[i*imgz->bytes_per_line+k*4] * 3598 + 4096 + 1048576) >> 13, 240); + yuv->v[j]=min(abs(dtap[i*imgz->bytes_per_line+k*4+2] * 3598 + dtap[i*imgz->bytes_per_line+k*4+1] * -3013 + dtap[i*imgz->bytes_per_line+k*4] * -585 + 4096 + 1048576) >> 13, 240); + j++; + } + } +} + +void UpdateYUVBufferSh(yuv_buffer *yuv,unsigned char *data,int x,int y,int width,int height){ + int i,k; + for(k=y;k<y+height;k++){ + for(i=x;i<x+width;i++){ + yuv->y[i+k*yuv->y_width]=min(abs(data[(i+k*yuv->y_width)*4+2] * 2104 + data[(i+k*yuv->y_width)*4+1] * 4130 + data[(i+k*yuv->y_width)*4] * 802 + 4096 + 131072) >> 13, 235); + if((k%2)&&(i%2)){ + yuv->u[i/2+k/2*yuv->uv_width]=min(abs(data[(i+k*yuv->y_width)*4+2] * -1214 + data[(i+k*yuv->y_width)*4+1] * -2384 + data[(i+k*yuv->y_width)*4] * 3598 + 4096 + 1048576) >> 13, 240); + yuv->v[i/2+k/2*yuv->uv_width]=min(abs(data[(i+k*yuv->y_width)*4+2] * 3598 + data[(i+k*yuv->y_width)*4+1] * -3013 + data[(i+k*yuv->y_width)*4] * -585 + 4096 + 1048576) >> 13, 240); + } + } + } +} + +void UpdateYUVBufferIm(yuv_buffer *yuv,unsigned char *data,int x,int y,int width,int height){ + int i,k,j=0; + int x_2=x/2,y_2=y/2,y_width_2=yuv->y_width/2; + for(k=0;k<height;k++){ + for(i=0;i<width;i++){ + yuv->y[x+i+(k+y)*yuv->y_width]=min(abs(data[(j*4)+2] * 2104 + data[(j*4)+1] * 4130 + data[(j*4)] * 802 + 4096 + 131072) >> 13, 235); + if((k%2)&&(i%2)){ + yuv->u[x_2+i/2+(k/2+y_2)*y_width_2]=min(abs(data[(k*width+i)*4+2] * -1214 + data[(k*width+i)*4+1] * -2384 + data[(k*width+i)*4] * 3598 + 4096 + 1048576) >> 13, 240); + yuv->v[x_2+i/2+(k/2+y_2)*y_width_2]=min(abs(data[(k*width+i)*4+2] * 3598 + data[(k*width+i)*4+1] * -3013 + data[(k*width+i)*4] * -585 + 4096 + 1048576) >> 13, 240); + } + j++; + } + } +} + |