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Code Issues Releases Wiki Activity

Use a transform_color function to reduce code duplication 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25702 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2008-01-12 16:30:41 +00:00
parent 7172339ff9
commit a84db25ae4
1 changed files with 14 additions and 28 deletions
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42
libvo/x11_common.c
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@ -1959,6 +1959,17 @@ static int vo_gamma = 0;
static int vo_brightness = 0;
static int vo_contrast = 0;
static int transform_color(float val,
float brightness, float contrast, float gamma) {
float s = pow(val, gamma);
s = (s - 0.5) * contrast + 0.5;
s += brightness;
if (s < 0)
s = 0;
if (s > 1)
s = 1;
return (unsigned short) (s * 65535);
}
uint32_t vo_x11_set_equalizer(char *name, int value)
{
@ -2001,34 +2012,9 @@ uint32_t vo_x11_set_equalizer(char *name, int value)
/* now recalculate the colormap using the newly set value */
for (k = 0; k < cm_size; k++)
{
float s;
s = pow(rf * k, gamma);
s = (s - 0.5) * contrast + 0.5;
s += brightness;
if (s < 0)
s = 0;
if (s > 1)
s = 1;
cols[k].red = (unsigned short) (s * 65535);
s = pow(gf * k, gamma);
s = (s - 0.5) * contrast + 0.5;
s += brightness;
if (s < 0)
s = 0;
if (s > 1)
s = 1;
cols[k].green = (unsigned short) (s * 65535);
s = pow(bf * k, gamma);
s = (s - 0.5) * contrast + 0.5;
s += brightness;
if (s < 0)
s = 0;
if (s > 1)
s = 1;
cols[k].blue = (unsigned short) (s * 65535);
cols[k].red = transform_color(rf * k, brightness, contrast, gamma);
cols[k].green = transform_color(gf * k, brightness, contrast, gamma);
cols[k].blue = transform_color(bf * k, brightness, contrast, gamma);
}
XStoreColors(mDisplay, cmap, cols, cm_size);