static PyObject * _minrep(PyObject *self, PyObject *args)
{
// compares two cyclic strings and returns alphabetically smallest
// cyclic shift of the string which contains the smallest such shift
// from the pair
Py_buffer inputA, inputB, *tmp;
if (!PyArg_ParseTuple(args, "y*y*",
&inputA, &inputB))
{
return NULL;
}
unsigned int inputA_msp, inputB_msp,
inputA_period, inputB_period;
inputA_msp = MSP(inputA.len, inputA.buf, &inputA_period);
inputB_msp = MSP(inputB.len, inputB.buf, &inputB_period);
// positive result: A < B, negative result: A > B, zero: A == B
int result = COMPARE2(inputA.len, inputB.len,
inputA.buf, inputB.buf,
inputA_msp, inputB_msp);
// decide between A and B
unsigned int tmp_msp;
if (result > 0) {
// A < B
tmp_msp = inputA_msp;
tmp = &inputA;
} else if (result < 0) {
// B < A
tmp_msp = inputB_msp;
tmp = &inputB;
} else if (inputB.len < inputA.len) {
// A == B, len(B) < len(A)
tmp_msp = inputB_msp;
tmp = &inputB;
} else {
// A == B, len(A) <= len(B)
tmp_msp = inputA_msp;
tmp = &inputA;
}
minrep_inplace_msp(tmp->buf, tmp->len, tmp_msp);
return Py_BuildValue("s#", tmp->buf, tmp->len);
}
int ShapeWipeMain::process_realtime(VFrame *incoming, VFrame *outgoing)
{
unsigned char *pattern_row;
int col_offset;
unsigned char threshold;
unsigned char value;
int i,j,k;
int opacity;
init_shapes();
load_configuration();
int w = incoming->get_w();
int h = incoming->get_h();
if (strncmp(filename, last_read_filename, BCTEXTLEN) ||
strncmp(shape_name, current_name, BCTEXTLEN) ||
preserve_aspect != last_preserve_aspect)
{
reset_pattern_image();
}
if (!pattern_image)
{
read_pattern_image(w, h);
strncpy(last_read_filename, filename, BCTEXTLEN);
strncpy(current_name, shape_name, BCTEXTLEN);
last_preserve_aspect = preserve_aspect;
}
if (!pattern_image)
{
fprintf(stderr, "Shape Wipe: cannot load shape %s\n", filename);
return 0;
}
if (direction)
{
threshold = (unsigned char)(
(float)PluginClient::get_source_position() /
(float)PluginClient::get_total_len() *
(float)(max_value - min_value))
+ min_value;
}
else
{
threshold = (unsigned char)((max_value - min_value) - (
(float)PluginClient::get_source_position() /
(float)PluginClient::get_total_len() *
(float)(max_value - min_value)))
+ min_value;
}
if (antialias)
{
if (direction)
{
/* Top left corner */
opacity = 0;
COMPARE1(0,0);
COMPARE1(0,1);
COMPARE1(1,0);
COMPARE1(1,1);
BLEND(0,0,4.0);
/* Top edge */
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE1(0,k-1);
COMPARE1(0,k);
COMPARE1(0,k+1);
COMPARE1(1,k-1);
COMPARE1(1,k);
COMPARE1(1,k+1);
BLEND(0,k,6.0);
}
/* Top right corner */
opacity = 0;
COMPARE1(0,w-1);
COMPARE1(0,w-2);
COMPARE1(1,w-1);
COMPARE1(1,w-2);
BLEND(0,w-1,4.0);
/* Left edge */
for (j = 1; j < h-1; j++)
{
opacity = 0;
COMPARE1(j-1,0);
COMPARE1(j,0);
COMPARE1(j+1,0);
COMPARE1(j-1,1);
COMPARE1(j,1);
COMPARE1(j+1,1);
BLEND(j,0,6.0);
}
/* Middle */
for (j = 1; j < h-1; j++)
{
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE1(j-1,k-1);
COMPARE1(j,k-1);
COMPARE1(j+1,k-1);
COMPARE1(j-1,k);
COMPARE1(j,k);
COMPARE1(j+1,k);
COMPARE1(j-1,k+1);
COMPARE1(j,k+1);
COMPARE1(j+1,k+1);
BLEND(j,k,9.0);
}
}
/* Right edge */
for (j = 1; j < h-1; j++)
{
opacity = 0;
COMPARE1(j-1,w-1);
COMPARE1(j,w-1);
COMPARE1(j+1,w-1);
COMPARE1(j-1,w-2);
COMPARE1(j,w-2);
COMPARE1(j+1,w-2);
BLEND(j,w-1,6.0);
}
/* Bottom left corner */
opacity = 0;
COMPARE1(h-1,0);
COMPARE1(h-1,1);
COMPARE1(h-2,0);
COMPARE1(h-2,1);
BLEND(h-1,0,4.0);
/* Bottom edge */
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE1(h-1,k-1);
COMPARE1(h-1,k);
COMPARE1(h-1,k+1);
COMPARE1(h-2,k-1);
COMPARE1(h-2,k);
COMPARE1(h-2,k+1);
BLEND(h-1,k,6.0);
}
/* Bottom right corner */
opacity = 0;
COMPARE1(h-1,w-1);
COMPARE1(h-1,w-2);
COMPARE1(h-2,w-1);
COMPARE1(h-2,w-2);
BLEND(h-1,w-1,4.0);
}
else
{
/* Top left corner */
opacity = 0;
COMPARE2(0,0);
COMPARE2(0,1);
COMPARE2(1,0);
COMPARE2(1,1);
BLEND(0,0,4.0);
/* Top edge */
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE2(0,k-1);
COMPARE2(0,k);
COMPARE2(0,k+1);
COMPARE2(1,k-1);
COMPARE2(1,k);
COMPARE2(1,k+1);
BLEND(0,k,6.0);
}
/* Top right corner */
opacity = 0;
COMPARE2(0,w-1);
COMPARE2(0,w-2);
COMPARE2(1,w-1);
COMPARE2(1,w-2);
BLEND(0,w-1,4.0);
/* Left edge */
for (j = 1; j < h-1; j++)
{
opacity = 0;
COMPARE2(j-1,0);
COMPARE2(j,0);
COMPARE2(j+1,0);
COMPARE2(j-1,1);
COMPARE2(j,1);
COMPARE2(j+1,1);
BLEND(j,0,6.0);
}
/* Middle */
for (j = 1; j < h-1; j++)
{
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE2(j-1,k-1);
COMPARE2(j,k-1);
COMPARE2(j+1,k-1);
COMPARE2(j-1,k);
COMPARE2(j,k);
COMPARE2(j+1,k);
COMPARE2(j-1,k+1);
COMPARE2(j,k+1);
COMPARE2(j+1,k+1);
BLEND(j,k,9.0);
}
}
/* Right edge */
for (j = 1; j < h-1; j++)
{
opacity = 0;
COMPARE2(j-1,w-1);
COMPARE2(j,w-1);
COMPARE2(j+1,w-1);
COMPARE2(j-1,w-2);
COMPARE2(j,w-2);
COMPARE2(j+1,w-2);
BLEND(j,w-1,6.0);
}
/* Bottom left corner */
opacity = 0;
COMPARE2(h-1,0);
COMPARE2(h-1,1);
COMPARE2(h-2,0);
COMPARE2(h-2,1);
BLEND(h-1,0,4.0);
/* Bottom edge */
for (k = 1; k < w-1; k++)
{
opacity = 0;
COMPARE2(h-1,k-1);
COMPARE2(h-1,k);
COMPARE2(h-1,k+1);
COMPARE2(h-2,k-1);
COMPARE2(h-2,k);
COMPARE2(h-2,k+1);
BLEND(h-1,k,6.0);
}
/* Bottom right corner */
opacity = 0;
COMPARE2(h-1,w-1);
COMPARE2(h-1,w-2);
COMPARE2(h-2,w-1);
COMPARE2(h-2,w-2);
BLEND(h-1,w-1,4.0);
}
}
else
{
switch(incoming->get_color_model())
{
case BC_RGB_FLOAT:
SHAPEWIPE(float, 3)
break;
case BC_RGB888:
case BC_YUV888:
SHAPEWIPE(unsigned char, 3)
break;
case BC_RGBA_FLOAT:
SHAPEWIPE(float, 4)
break;
case BC_RGBA8888:
case BC_YUVA8888:
SHAPEWIPE(unsigned char, 4)
break;
case BC_RGB161616:
case BC_YUV161616:
SHAPEWIPE(uint16_t, 3)
break;
case BC_RGBA16161616:
case BC_YUVA16161616:
SHAPEWIPE(uint16_t, 4)
break;
}
}
return 0;
}
