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gaudieffects: remove < 0 comparison on guint32

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Current CLAMP checks both if the value is below 0 or above 255. Considering it
is an unsigned value it can never be less than zero, so that comparison is
unnecessary. Switching to using if just for the upper bound.

CID #1139796
This commit is contained in:
Luis de Bethencourt 2014-10-30 17:06:01 +00:00
parent 267bc774ec
commit 3e452352f0
1 changed files with 8 additions and 9 deletions
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17
gst/gaudieffects/gstsolarize.c
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@ -317,7 +317,7 @@ transform (guint32 * src, guint32 * dest, gint video_area,
static const guint floor = 0;
static const guint ceiling = 255;
gint period, up_length, down_length, height_scale, param;
gint period, up_length, down_length, param;
period = end - start;
if (period == 0) {
@ -334,8 +334,6 @@ transform (guint32 * src, guint32 * dest, gint video_area,
down_length = 1;
}
height_scale = ceiling - floor;
/* Loop through pixels. */
for (x = 0; x < video_area; x++) {
in = *src++;
@ -344,7 +342,6 @@ transform (guint32 * src, guint32 * dest, gint video_area,
color[1] = (in >> 8) & 0xff;
color[2] = (in) & 0xff;
/* Loop through colors. */
for (c = 0; c < 3; c++) {
param = color[c];
@ -353,20 +350,22 @@ transform (guint32 * src, guint32 * dest, gint video_area,
param %= period;
if (param < up_length) {
color[c] = param * height_scale;
color[c] = param * ceiling;
color[c] /= up_length;
color[c] += floor;
} else {
color[c] = down_length - (param - up_length);
color[c] *= height_scale;
color[c] *= ceiling;
color[c] /= down_length;
color[c] += floor;
}
}
color[0] = CLAMP (color[0], 0, 255);
color[1] = CLAMP (color[1], 0, 255);
color[2] = CLAMP (color[2], 0, 255);
/* Clamp colors */
for (c = 0; c < 3; c++) {
if (G_UNLIKELY (color[c] > 255))
color[c] = 255;
}
*dest++ = (color[0] << 16) | (color[1] << 8) | color[2];
}