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Add function to translate SWS_CS_* to coefficient array 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30513 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
conrad 2010-02-05 16:09:03 +00:00
parent 2762207eed
commit 2e9988220c
2 changed files with 14 additions and 1 deletions
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8
libswscale/swscale.h
View File

@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBSWSCALE_VERSION_MAJOR 0
#define LIBSWSCALE_VERSION_MINOR 9
#define LIBSWSCALE_VERSION_MINOR 10
#define LIBSWSCALE_VERSION_MICRO 0
#define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
@ -103,6 +103,12 @@ const char *swscale_license(void);
#define SWS_CS_SMPTE240M 7
#define SWS_CS_DEFAULT 5
/**
* Returns a pointer to yuv<->rgb coefficients for the given colorspace
* suitable for sws_setColorspaceDetails()
* @colorspace one of SWS_CS_* If invalid, SWS_CS_DEFAULT is used.
*/
const int * sws_getCoefficients(int colorspace);
// when used for filters they must have an odd number of elements

7
libswscale/yuv2rgb.c
View File

@ -49,6 +49,13 @@ const int32_t ff_yuv2rgb_coeffs[8][4] = {
{117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */
};
const int * sws_getCoefficients(int colorspace)
{
if (colorspace > 7 || colorspace < 0)
colorspace = SWS_CS_DEFAULT;
return ff_yuv2rgb_coeffs[colorspace];
}
#define LOADCHROMA(i) \
U = pu[i]; \
V = pv[i]; \