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replace if conditional for bitwise mask to improve performance

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veejay
2023-12-01 23:10:49 +01:00
parent cd2e60244e
commit cbd75bf0fa
1 changed files with 19 additions and 18 deletions
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37
veejay-current/veejay-server/libvje/effects/solarize.c
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@@ -27,40 +27,41 @@ vj_effect *solarize_init(int w,int h)
{
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
ve->num_params = 1;
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);
ve->defaults[0] = 16;
ve->limits[0][0] = 1; /* threshold */
ve->limits[0][0] = 1; /* threshold */
ve->limits[1][0] = 255;
ve->description = "Solarize";
ve->parallel = 1;
ve->parallel = 1;
ve->sub_format = 1;
ve->extra_frame = 0;
ve->has_user = 0;
ve->param_description = vje_build_param_list( ve->num_params, "Threshold");
ve->param_description = vje_build_param_list( ve->num_params, "Threshold");
return ve;
}
void solarize_apply( void *ptr, VJFrame *frame, int *args )
{
unsigned int i;
const int len= frame->len;
uint8_t val;
uint8_t *Y = frame->data[0];
uint8_t *Cb= frame->data[1];
uint8_t *Cr= frame->data[2];
const int len= frame->len;
uint8_t *Y = frame->data[0];
uint8_t *Cb= frame->data[1];
uint8_t *Cr= frame->data[2];
int threshold = args[0];
uint8_t threshold_mask = -(Y[0] >= threshold);
for (i = 0; i < len; i++) {
val = Y[i];
if (val > threshold)
{
Y[i] = 255 - val;
Cb[i] = 255 - Cb[i];
Cr[i] = 255 - Cr[i];
}
uint8_t val = Y[i];
uint8_t mask = -(val >= threshold);
Y[i] = (val & mask) | ((0xff - val) & ~mask);
Cb[i] = (Cb[i] & mask) | ((0xff - Cb[i]) & ~mask);
Cr[i] = (Cr[i] & mask) | ((0xff - Cr[i]) & ~mask);
threshold_mask = (threshold_mask | mask) & (-(val == threshold));
}
}