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reduce number of calculations to improve performance

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veejay
2023-12-01 23:12:05 +01:00
parent 72c19ba71b
commit c6a3b13ad6
1 changed files with 20 additions and 78 deletions
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98
veejay-current/veejay-server/libvje/effects/transform.c
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@@ -34,98 +34,40 @@ vj_effect *transform_init(int width,int height)
ve->limits[1][0] = (height / 16);
ve->description = "Transform Cubics";
ve->sub_format = -1;
ve->sub_format = 1;
ve->extra_frame = 0;
ve->has_user = 0;
ve->parallel = 0;
ve->param_description = vje_build_param_list(ve->num_params, "Cubics");
return ve;
}
void transform_apply(void *ptr, VJFrame *frame, int *args)
{
unsigned int ty, tx, y, x;
const unsigned int uv_height = frame->uv_height;
const unsigned int uv_width = frame->uv_width;
const unsigned int width = frame->width;
const unsigned int height = frame->height;
uint8_t *Y = frame->data[0];
uint8_t *Cb= frame->data[1];
uint8_t *Cr= frame->data[2];
uint8_t *Y2 = frame->data[0];
uint8_t *Cb2= frame->data[1];
uint8_t *Cr2= frame->data[2];
int size = args[0];
uint8_t *restrict Y = frame->data[0];
uint8_t *restrict Cb= frame->data[1];
uint8_t *restrict Cr= frame->data[2];
/* Luminance */
for (y = 1; y < height; y++)
const unsigned int size = args[0];
const unsigned int hsize = size >> 1;
for (unsigned int y = 1; y < height; y++)
{
ty = y % size - (size >> 1);
if ((y / size) % 2)
{
ty = y - ty;
}
else
{
ty = y + ty;
}
if (ty < 0)
ty = 0;
unsigned int ty_offset = y % size;
unsigned int ty = (y / size) % 2 ? y - ty_offset + hsize : y + ty_offset - hsize;
ty = (ty < 0) ? 0 : (ty >= (height - 1)) ? height - 1 : ty;
for (unsigned int x = 1; x < width; x++)
{
unsigned int tx_offset = x % size;
unsigned int tx = (x / size) % 2 ? x - tx_offset + hsize : x + tx_offset - hsize;
tx = (tx < 0) ? 0 : (tx >= (width - 1)) ? width - 1 : tx;
if (ty >= height)
ty = height - 1;
for (x = 1; x < width; x++)
{
tx = x % size - (size >> 1);
if ((x / size) % 2)
{
tx = x - tx;
}
else
{
tx = x + tx;
}
if (tx < 0)
tx = 0;
if (tx >= width)
tx = width - 1;
Y[x + (y * width)] = Y2[(ty * width) + tx];
Y[x + (y * width)] = Y[(ty * width) + tx];
Cb[x + (y * width)] = Cb[(ty * width) + tx];
Cr[x + (y * width)] = Cr[(ty * width) + tx];
}
}
}
/* Chroma */
for (y = 1; y < uv_height; y++)
{
ty = y % size - (size >> 1);
if ((y / size) % 2) {
ty = y - ty;
}
else
{
ty = y + ty;
}
if (ty < 0)
ty = 0;
if (ty >= uv_height)
ty = uv_height - 1;
for (x = 1; x < uv_width; x++)
{
tx = x % size - (size >> 1);
if ((x / size) % 2)
{
tx = x - tx;
}
else
{
tx = x + tx;
}
if (tx < 0)
tx = 0;
if (tx >= uv_width)
tx = uv_width - 1;
Cb[x + (y * uv_width)] = Cb2[(ty * uv_width) + tx];
Cr[x + (y * uv_width)] = Cr2[(ty * uv_width) + tx];
}
}
}