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| author | Mike Melanson <mike@multimedia.cx> | 2002-07-14 01:27:03 +0000 |
|---|---|---|
| committer | Mike Melanson <mike@multimedia.cx> | 2002-07-14 01:27:03 +0000 |
| commit | a10043c90eb481faa16068440aad68cbea65dc91 (patch) | |
| tree | 827ad72e5ddebf5583c15d9c24c492aca751f760 /src/xine-utils/xineutils.h | |
| parent | 3280e2c70f6b55e49b016a55e57481ddcfc1b540 (diff) | |
| download | xine-lib-a10043c90eb481faa16068440aad68cbea65dc91.tar.gz xine-lib-a10043c90eb481faa16068440aad68cbea65dc91.tar.bz2 | |
new color conversion facilities
CVS patchset: 2261
CVS date: 2002/07/14 01:27:03
Diffstat (limited to 'src/xine-utils/xineutils.h')
| -rw-r--r-- | src/xine-utils/xineutils.h | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/src/xine-utils/xineutils.h b/src/xine-utils/xineutils.h index 214331940..65b9d02da 100644 --- a/src/xine-utils/xineutils.h +++ b/src/xine-utils/xineutils.h @@ -17,7 +17,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * - * $Id: xineutils.h,v 1.15 2002/06/07 22:15:47 f1rmb Exp $ + * $Id: xineutils.h,v 1.16 2002/07/14 01:27:03 tmmm Exp $ * */ #ifndef XINEUTILS_H @@ -715,6 +715,56 @@ static inline void _x_setenv(const char *name, const char *val, int _xx) #define xine_setenv _x_setenv #endif +/* + * Color Conversion Utility Functions + * The following data structures and functions facilitate the conversion + * of RGB images to packed YUV (YUY2) images. All of the meaty details + * are written in color.c. + */ + +typedef struct yuv_planes_s { + + unsigned char *y; + unsigned char *u; + unsigned char *v; + unsigned int row_width; /* frame width */ + unsigned int row_stride; /* frame width + 2 */ + unsigned int row_count; /* frame height */ + +} yuv_planes_t; + +void init_yuv_conversion(void); +void init_yuv_planes(yuv_planes_t *yuv_planes, int width, int height); +void free_yuv_planes(yuv_planes_t *yuv_planes); + +extern void (*yuv444_to_yuy2) + (yuv_planes_t *yuv_planes, unsigned char *yuy2_map); + +#define SCALEFACTOR 65536 +#define CENTERSAMPLE 128 + +#define COMPUTE_Y(r, g, b) \ + (unsigned char) \ + ((y_r_table[r] + y_g_table[g] + y_b_table[b]) / SCALEFACTOR) +#define COMPUTE_U(r, g, b) \ + (unsigned char) \ + ((u_r_table[r] + u_g_table[g] + u_b_table[b]) / SCALEFACTOR + CENTERSAMPLE) +#define COMPUTE_V(r, g, b) \ + (unsigned char) \ + ((v_r_table[r] + v_g_table[g] + v_b_table[b]) / SCALEFACTOR + CENTERSAMPLE) + +extern int y_r_table[256]; +extern int y_g_table[256]; +extern int y_b_table[256]; + +extern int u_r_table[256]; +extern int u_g_table[256]; +extern int u_b_table[256]; + +extern int v_r_table[256]; +extern int v_g_table[256]; +extern int v_b_table[256]; + #ifdef __cplusplus } #endif |