mirror of
https://github.com/nothings/stb
synced 2024-12-24 00:26:49 +03:00
move x loop inside switch in horizontal_downsample
This commit is contained in:
parent
7a8c9196d1
commit
adbbe8dabd
@ -1430,18 +1430,18 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
|
||||
STBIR__DEBUG_ASSERT(!stbir__use_width_upsampling(stbir_info));
|
||||
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
switch (channels) {
|
||||
case 1:
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * channels;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * 1;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
|
||||
switch (channels) {
|
||||
case 1:
|
||||
for (k = n0; k <= max_n; k++)
|
||||
{
|
||||
int out_pixel_index = k * 1;
|
||||
@ -1449,9 +1449,20 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
STBIR__DEBUG_ASSERT(coefficient != 0);
|
||||
output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 2:
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * 2;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
|
||||
case 2:
|
||||
for (k = n0; k <= max_n; k++)
|
||||
{
|
||||
int out_pixel_index = k * 2;
|
||||
@ -1460,9 +1471,20 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
output_buffer[out_pixel_index + 0] += decode_buffer[in_pixel_index + 0] * coefficient;
|
||||
output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 3:
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * 3;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
|
||||
case 3:
|
||||
for (k = n0; k <= max_n; k++)
|
||||
{
|
||||
int out_pixel_index = k * 3;
|
||||
@ -1472,9 +1494,20 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
output_buffer[out_pixel_index + 1] += decode_buffer[in_pixel_index + 1] * coefficient;
|
||||
output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
case 4:
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * 4;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
|
||||
case 4:
|
||||
for (k = n0; k <= max_n; k++)
|
||||
{
|
||||
int out_pixel_index = k * 4;
|
||||
@ -1485,9 +1518,20 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
output_buffer[out_pixel_index + 2] += decode_buffer[in_pixel_index + 2] * coefficient;
|
||||
output_buffer[out_pixel_index + 3] += decode_buffer[in_pixel_index + 3] * coefficient;
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
for (x = 0; x < max_x; x++)
|
||||
{
|
||||
int n0 = horizontal_contributors[x].n0;
|
||||
int n1 = horizontal_contributors[x].n1;
|
||||
|
||||
int in_x = x - filter_pixel_margin;
|
||||
int in_pixel_index = in_x * channels;
|
||||
int max_n = n1;
|
||||
int coefficient_group = coefficient_width * x;
|
||||
|
||||
default:
|
||||
for (k = n0; k <= max_n; k++)
|
||||
{
|
||||
int c;
|
||||
@ -1497,8 +1541,8 @@ static void stbir__resample_horizontal_downsample(stbir__info* stbir_info, int n
|
||||
for (c = 0; c < channels; c++)
|
||||
output_buffer[out_pixel_index + c] += decode_buffer[in_pixel_index + c] * coefficient;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user