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gamma correction (preliminary version).

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4251 b3059339-0415-0410-9bf9-f77b7e298cf2
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nick 2002-01-19 08:19:00 +00:00
parent 1a1fb545a7
commit 4e3acc51b6
1 changed files with 27 additions and 0 deletions
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27
vidix/drivers/mga_vid.c
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@ -1457,3 +1457,30 @@ int vixSetGrKeys(const vidix_grkey_t *grkey)
memcpy(&mga_grkey, grkey, sizeof(vidix_grkey_t));
return(0);
}
#ifdef TEST_ME_PLEASE
vidix_video_eq_t equal = { 0, 0, 0, 0, 0, 0, 0, 0 };
int vixPlaybackSetEq( const vidix_video_eq_t * eq)
{
uint32_t beslumactl;
int brightness,contrast;
memcpy(&equal,eq,sizeof(vidix_video_eq_t));
//Enable contrast and brightness control
writel(readl(mga_mmio_base + BESGLOBCTL) & ~((1<<5) + (1<<7)),mga_mmio_base + BESGLOBCTL);
brightness = (equal.brightness * 128) / 1000;
if(brightness < -128) brightness = -128;
if(brightness > 127) brightness = 127;
contrast = ((equal.contrast + 1000) * 128) / 1000;
if(contrast < 0) contrast = 0;
if(contrast > 255) contrast = 255;
beslumactl = ((brightness & 0xff) << 16) | (contrast & 0xff);
writel(beslumactl,mga_mmio_base + BESLUMACTL);
return 0;
}
int vixPlaybackGetEq( vidix_video_eq_t * eq)
{
memcpy(eq,&equal,sizeof(vidix_video_eq_t));
return 0;
}
#endif