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commit a75fc4c5c85219092457105d7b19ef387a5e0728
Author: Kim Woelders <k...@woelders.dk>
AuthorDate: Thu Jun 15 14:50:38 2023 +0200
scaling: Cosmetics (comments)
---
src/lib/scale.c | 33 ++++++++++++++++++++++++++++-----
1 file changed, 28 insertions(+), 5 deletions(-)
diff --git a/src/lib/scale.c b/src/lib/scale.c
index 91ad38c..56417d3 100644
--- a/src/lib/scale.c
+++ b/src/lib/scale.c
@@ -47,6 +47,7 @@ __imlib_CalcYPoints(uint32_t * src, int sw, int sh, int dh, int b1, int b2)
b2 = val - b1;
}
+ /* Border 1 */
val = 0;
inc = 1 << 16;
for (i = 0; i < b1; i++)
@@ -54,6 +55,8 @@ __imlib_CalcYPoints(uint32_t * src, int sw, int sh, int dh, int b1, int b2)
p[j++] = src + ((val >> 16) * sw);
val += inc;
}
+
+ /* Center */
if (dh > (b1 + b2))
{
val = (b1 << 16);
@@ -64,6 +67,8 @@ __imlib_CalcYPoints(uint32_t * src, int sw, int sh, int dh, int b1, int b2)
val += inc;
}
}
+
+ /* Border 2 */
val = (sh - b2) << 16;
inc = 1 << 16;
for (i = 0; i < b2; i++)
@@ -80,6 +85,7 @@ __imlib_CalcYPoints(uint32_t * src, int sw, int sh, int dh, int b1, int b2)
p[i] = p[dh - i - 1];
p[dh - i - 1] = tmp;
}
+
return p;
}
@@ -107,6 +113,7 @@ __imlib_CalcXPoints(int sw, int dw, int b1, int b2)
b2 = val - b1;
}
+ /* Border 1 */
val = 0;
inc = 1 << 16;
for (i = 0; i < b1; i++)
@@ -114,6 +121,8 @@ __imlib_CalcXPoints(int sw, int dw, int b1, int b2)
p[j++] = (val >> 16);
val += inc;
}
+
+ /* Center */
if (dw > (b1 + b2))
{
val = (b1 << 16);
@@ -124,6 +133,8 @@ __imlib_CalcXPoints(int sw, int dw, int b1, int b2)
val += inc;
}
}
+
+ /* Border 2 */
val = (sw - b2) << 16;
inc = 1 << 16;
for (i = 0; i < b2; i++)
@@ -140,6 +151,7 @@ __imlib_CalcXPoints(int sw, int dw, int b1, int b2)
p[i] = p[dw - i - 1];
p[dw - i - 1] = tmp;
}
+
return p;
}
@@ -167,11 +179,15 @@ __imlib_CalcApoints(int s, int d, int b1, int b2, int up)
b2 = val - b1;
}
- /* scaling up */
if (up)
{
+ /* Scaling up */
+
+ /* Border 1 */
for (i = 0; i < b1; i++)
p[j++] = 0;
+
+ /* Center */
if (d > (b1 + b2))
{
int ss, dd;
@@ -188,14 +204,20 @@ __imlib_CalcApoints(int s, int d, int b1, int b2, int up)
val += inc;
}
}
+
+ /* Border 2 */
for (i = 0; i < b2; i++)
p[j++] = 0;
}
- /* scaling down */
else
{
+ /* Scaling down */
+
+ /* Border 1 */
for (i = 0; i < b1; i++)
p[j++] = (1 << (16 + 14)) + (1 << 14);
+
+ /* Center */
if (d > (b1 + b2))
{
int ss, dd, ap, Cp;
@@ -213,6 +235,8 @@ __imlib_CalcApoints(int s, int d, int b1, int b2, int up)
val += inc;
}
}
+
+ /* Border 2 */
for (i = 0; i < b2; i++)
p[j++] = (1 << (16 + 14)) + (1 << 14);
}
@@ -227,6 +251,7 @@ __imlib_CalcApoints(int s, int d, int b1, int b2, int up)
p[d - i - 1] = tmp;
}
}
+
return p;
}
@@ -297,7 +322,7 @@ __imlib_ScaleSampleRGBA(ImlibScaleInfo * isi, uint32_t * dest, int dxx, int dyy,
/* whats the last pixel on the line so we stop there */
end = dxx + dw;
- /* go through every scanline in the output buffer */
+
for (y = 0; y < dh; y++)
{
/* get the pointer to the start of the destination scanline */
@@ -342,7 +367,6 @@ __imlib_ScaleAARGBA(ImlibScaleInfo * isi, uint32_t * dest, int dxx, int dyy,
{
/* Scaling up both ways */
- /* go through every scanline in the output buffer */
for (y = 0; y < dh; y++)
{
/* calculate the source line we'll scan from */
@@ -752,7 +776,6 @@ __imlib_ScaleAARGB(ImlibScaleInfo * isi, uint32_t * dest, int dxx, int dyy,
{
/* Scaling up both ways */
- /* go through every scanline in the output buffer */
for (y = 0; y < dh; y++)
{
/* calculate the source line we'll scan from */
--
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