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CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/SDKs/XPlatform/Cypython-2.3.3/Modules/imageop.c

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/* imageopmodule - Various operations on pictures */
#ifdef sun
#define signed
#endif
#include "Python.h"
#if SIZEOF_INT == 4
typedef int Py_Int32;
typedef unsigned int Py_UInt32;
#else
#if SIZEOF_LONG == 4
typedef long Py_Int32;
typedef unsigned long Py_UInt32;
#else
#error "No 4-byte integral type"
#endif
#endif
#define CHARP(cp, xmax, x, y) ((char *)(cp+y*xmax+x))
#define SHORTP(cp, xmax, x, y) ((short *)(cp+2*(y*xmax+x)))
#define LONGP(cp, xmax, x, y) ((Py_Int32 *)(cp+4*(y*xmax+x)))
static PyObject *ImageopError;
static PyObject *
imageop_crop(PyObject *self, PyObject *args)
{
char *cp, *ncp;
short *nsp;
Py_Int32 *nlp;
int len, size, x, y, newx1, newx2, newy1, newy2;
int ix, iy, xstep, ystep;
PyObject *rv;
if ( !PyArg_ParseTuple(args, "s#iiiiiii", &cp, &len, &size, &x, &y,
&newx1, &newy1, &newx2, &newy2) )
return 0;
if ( size != 1 && size != 2 && size != 4 ) {
PyErr_SetString(ImageopError, "Size should be 1, 2 or 4");
return 0;
}
if ( len != size*x*y ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
xstep = (newx1 < newx2)? 1 : -1;
ystep = (newy1 < newy2)? 1 : -1;
rv = PyString_FromStringAndSize(NULL,
(abs(newx2-newx1)+1)*(abs(newy2-newy1)+1)*size);
if ( rv == 0 )
return 0;
ncp = (char *)PyString_AsString(rv);
nsp = (short *)ncp;
nlp = (Py_Int32 *)ncp;
newy2 += ystep;
newx2 += xstep;
for( iy = newy1; iy != newy2; iy+=ystep ) {
for ( ix = newx1; ix != newx2; ix+=xstep ) {
if ( iy < 0 || iy >= y || ix < 0 || ix >= x ) {
if ( size == 1 )
*ncp++ = 0;
else
*nlp++ = 0;
} else {
if ( size == 1 )
*ncp++ = *CHARP(cp, x, ix, iy);
else if ( size == 2 )
*nsp++ = *SHORTP(cp, x, ix, iy);
else
*nlp++ = *LONGP(cp, x, ix, iy);
}
}
}
return rv;
}
static PyObject *
imageop_scale(PyObject *self, PyObject *args)
{
char *cp, *ncp;
short *nsp;
Py_Int32 *nlp;
int len, size, x, y, newx, newy;
int ix, iy;
int oix, oiy;
PyObject *rv;
if ( !PyArg_ParseTuple(args, "s#iiiii",
&cp, &len, &size, &x, &y, &newx, &newy) )
return 0;
if ( size != 1 && size != 2 && size != 4 ) {
PyErr_SetString(ImageopError, "Size should be 1, 2 or 4");
return 0;
}
if ( len != size*x*y ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, newx*newy*size);
if ( rv == 0 )
return 0;
ncp = (char *)PyString_AsString(rv);
nsp = (short *)ncp;
nlp = (Py_Int32 *)ncp;
for( iy = 0; iy < newy; iy++ ) {
for ( ix = 0; ix < newx; ix++ ) {
oix = ix * x / newx;
oiy = iy * y / newy;
if ( size == 1 )
*ncp++ = *CHARP(cp, x, oix, oiy);
else if ( size == 2 )
*nsp++ = *SHORTP(cp, x, oix, oiy);
else
*nlp++ = *LONGP(cp, x, oix, oiy);
}
}
return rv;
}
/* Note: this routine can use a bit of optimizing */
static PyObject *
imageop_tovideo(PyObject *self, PyObject *args)
{
int maxx, maxy, x, y, len;
int i;
unsigned char *cp, *ncp;
int width;
PyObject *rv;
if ( !PyArg_ParseTuple(args, "s#iii", &cp, &len, &width, &maxx, &maxy) )
return 0;
if ( width != 1 && width != 4 ) {
PyErr_SetString(ImageopError, "Size should be 1 or 4");
return 0;
}
if ( maxx*maxy*width != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, len);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
if ( width == 1 ) {
memcpy(ncp, cp, maxx); /* Copy first line */
ncp += maxx;
for (y=1; y<maxy; y++) { /* Interpolate other lines */
for(x=0; x<maxx; x++) {
i = y*maxx + x;
*ncp++ = ((int)cp[i] + (int)cp[i-maxx]) >> 1;
}
}
} else {
memcpy(ncp, cp, maxx*4); /* Copy first line */
ncp += maxx*4;
for (y=1; y<maxy; y++) { /* Interpolate other lines */
for(x=0; x<maxx; x++) {
i = (y*maxx + x)*4 + 1;
*ncp++ = 0; /* Skip alfa comp */
*ncp++ = ((int)cp[i] + (int)cp[i-4*maxx]) >> 1;
i++;
*ncp++ = ((int)cp[i] + (int)cp[i-4*maxx]) >> 1;
i++;
*ncp++ = ((int)cp[i] + (int)cp[i-4*maxx]) >> 1;
}
}
}
return rv;
}
static PyObject *
imageop_grey2mono(PyObject *self, PyObject *args)
{
int tres, x, y, len;
unsigned char *cp, *ncp;
unsigned char ovalue;
PyObject *rv;
int i, bit;
if ( !PyArg_ParseTuple(args, "s#iii", &cp, &len, &x, &y, &tres) )
return 0;
if ( x*y != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, (len+7)/8);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
bit = 0x80;
ovalue = 0;
for ( i=0; i < len; i++ ) {
if ( (int)cp[i] > tres )
ovalue |= bit;
bit >>= 1;
if ( bit == 0 ) {
*ncp++ = ovalue;
bit = 0x80;
ovalue = 0;
}
}
if ( bit != 0x80 )
*ncp++ = ovalue;
return rv;
}
static PyObject *
imageop_grey2grey4(PyObject *self, PyObject *args)
{
int x, y, len;
unsigned char *cp, *ncp;
unsigned char ovalue;
PyObject *rv;
int i;
int pos;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
if ( x*y != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, (len+1)/2);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
pos = 0;
ovalue = 0;
for ( i=0; i < len; i++ ) {
ovalue |= ((int)cp[i] & 0xf0) >> pos;
pos += 4;
if ( pos == 8 ) {
*ncp++ = ovalue;
ovalue = 0;
pos = 0;
}
}
if ( pos != 0 )
*ncp++ = ovalue;
return rv;
}
static PyObject *
imageop_grey2grey2(PyObject *self, PyObject *args)
{
int x, y, len;
unsigned char *cp, *ncp;
unsigned char ovalue;
PyObject *rv;
int i;
int pos;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
if ( x*y != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, (len+3)/4);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
pos = 0;
ovalue = 0;
for ( i=0; i < len; i++ ) {
ovalue |= ((int)cp[i] & 0xc0) >> pos;
pos += 2;
if ( pos == 8 ) {
*ncp++ = ovalue;
ovalue = 0;
pos = 0;
}
}
if ( pos != 0 )
*ncp++ = ovalue;
return rv;
}
static PyObject *
imageop_dither2mono(PyObject *self, PyObject *args)
{
int sum, x, y, len;
unsigned char *cp, *ncp;
unsigned char ovalue;
PyObject *rv;
int i, bit;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
if ( x*y != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, (len+7)/8);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
bit = 0x80;
ovalue = 0;
sum = 0;
for ( i=0; i < len; i++ ) {
sum += cp[i];
if ( sum >= 256 ) {
sum -= 256;
ovalue |= bit;
}
bit >>= 1;
if ( bit == 0 ) {
*ncp++ = ovalue;
bit = 0x80;
ovalue = 0;
}
}
if ( bit != 0x80 )
*ncp++ = ovalue;
return rv;
}
static PyObject *
imageop_dither2grey2(PyObject *self, PyObject *args)
{
int x, y, len;
unsigned char *cp, *ncp;
unsigned char ovalue;
PyObject *rv;
int i;
int pos;
int sum = 0, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
if ( x*y != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, (len+3)/4);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
pos = 1;
ovalue = 0;
for ( i=0; i < len; i++ ) {
sum += cp[i];
nvalue = sum & 0x180;
sum -= nvalue;
ovalue |= nvalue >> pos;
pos += 2;
if ( pos == 9 ) {
*ncp++ = ovalue;
ovalue = 0;
pos = 1;
}
}
if ( pos != 0 )
*ncp++ = ovalue;
return rv;
}
static PyObject *
imageop_mono2grey(PyObject *self, PyObject *args)
{
int v0, v1, x, y, len, nlen;
unsigned char *cp, *ncp;
PyObject *rv;
int i, bit;
if ( !PyArg_ParseTuple(args, "s#iiii", &cp, &len, &x, &y, &v0, &v1) )
return 0;
nlen = x*y;
if ( (nlen+7)/8 != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
bit = 0x80;
for ( i=0; i < nlen; i++ ) {
if ( *cp & bit )
*ncp++ = v1;
else
*ncp++ = v0;
bit >>= 1;
if ( bit == 0 ) {
bit = 0x80;
cp++;
}
}
return rv;
}
static PyObject *
imageop_grey22grey(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
unsigned char *cp, *ncp;
PyObject *rv;
int i, pos, value = 0, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( (nlen+3)/4 != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
pos = 0;
for ( i=0; i < nlen; i++ ) {
if ( pos == 0 ) {
value = *cp++;
pos = 8;
}
pos -= 2;
nvalue = (value >> pos) & 0x03;
*ncp++ = nvalue | (nvalue << 2) |
(nvalue << 4) | (nvalue << 6);
}
return rv;
}
static PyObject *
imageop_grey42grey(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
unsigned char *cp, *ncp;
PyObject *rv;
int i, pos, value = 0, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( (nlen+1)/2 != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
pos = 0;
for ( i=0; i < nlen; i++ ) {
if ( pos == 0 ) {
value = *cp++;
pos = 8;
}
pos -= 4;
nvalue = (value >> pos) & 0x0f;
*ncp++ = nvalue | (nvalue << 4);
}
return rv;
}
static PyObject *
imageop_rgb2rgb8(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
Py_UInt32 *cp;
unsigned char *ncp;
PyObject *rv;
int i, r, g, b;
Py_UInt32 value, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( nlen*4 != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
for ( i=0; i < nlen; i++ ) {
/* Bits in source: aaaaaaaa BBbbbbbb GGGggggg RRRrrrrr */
value = *cp++;
#if 0
r = (value >> 5) & 7;
g = (value >> 13) & 7;
b = (value >> 22) & 3;
#else
r = (int) ((value & 0xff) / 255. * 7. + .5);
g = (int) (((value >> 8) & 0xff) / 255. * 7. + .5);
b = (int) (((value >> 16) & 0xff) / 255. * 3. + .5);
#endif
nvalue = (r<<5) | (b<<3) | g;
*ncp++ = (unsigned char)nvalue;
}
return rv;
}
static PyObject *
imageop_rgb82rgb(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
unsigned char *cp;
Py_UInt32 *ncp;
PyObject *rv;
int i, r, g, b;
Py_UInt32 value, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( nlen != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen*4);
if ( rv == 0 )
return 0;
ncp = (Py_UInt32 *)PyString_AsString(rv);
for ( i=0; i < nlen; i++ ) {
/* Bits in source: RRRBBGGG
** Red and Green are multiplied by 36.5, Blue by 85
*/
value = *cp++;
r = (value >> 5) & 7;
g = (value ) & 7;
b = (value >> 3) & 3;
r = (r<<5) | (r<<3) | (r>>1);
g = (g<<5) | (g<<3) | (g>>1);
b = (b<<6) | (b<<4) | (b<<2) | b;
nvalue = r | (g<<8) | (b<<16);
*ncp++ = nvalue;
}
return rv;
}
static PyObject *
imageop_rgb2grey(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
Py_UInt32 *cp;
unsigned char *ncp;
PyObject *rv;
int i, r, g, b;
Py_UInt32 value, nvalue;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( nlen*4 != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen);
if ( rv == 0 )
return 0;
ncp = (unsigned char *)PyString_AsString(rv);
for ( i=0; i < nlen; i++ ) {
value = *cp++;
r = (value ) & 0xff;
g = (value >> 8) & 0xff;
b = (value >> 16) & 0xff;
nvalue = (int)(0.30*r + 0.59*g + 0.11*b);
if ( nvalue > 255 ) nvalue = 255;
*ncp++ = (unsigned char)nvalue;
}
return rv;
}
static PyObject *
imageop_grey2rgb(PyObject *self, PyObject *args)
{
int x, y, len, nlen;
unsigned char *cp;
Py_UInt32 *ncp;
PyObject *rv;
int i;
Py_UInt32 value;
if ( !PyArg_ParseTuple(args, "s#ii", &cp, &len, &x, &y) )
return 0;
nlen = x*y;
if ( nlen != len ) {
PyErr_SetString(ImageopError, "String has incorrect length");
return 0;
}
rv = PyString_FromStringAndSize(NULL, nlen*4);
if ( rv == 0 )
return 0;
ncp = (Py_UInt32 *)PyString_AsString(rv);
for ( i=0; i < nlen; i++ ) {
value = *cp++;
*ncp++ = value | (value << 8 ) | (value << 16);
}
return rv;
}
/*
static object *
imageop_mul(object *self, object *args)
{
char *cp, *ncp;
int len, size, x, y;
object *rv;
int i;
if ( !getargs(args, "(s#iii)", &cp, &len, &size, &x, &y) )
return 0;
if ( size != 1 && size != 4 ) {
err_setstr(ImageopError, "Size should be 1 or 4");
return 0;
}
if ( len != size*x*y ) {
err_setstr(ImageopError, "String has incorrect length");
return 0;
}
rv = newsizedstringobject(NULL, XXXX);
if ( rv == 0 )
return 0;
ncp = (char *)getstringvalue(rv);
for ( i=0; i < len; i += size ) {
}
return rv;
}
*/
static PyMethodDef imageop_methods[] = {
{ "crop", imageop_crop, METH_VARARGS },
{ "scale", imageop_scale, METH_VARARGS },
{ "grey2mono", imageop_grey2mono, METH_VARARGS },
{ "grey2grey2", imageop_grey2grey2, METH_VARARGS },
{ "grey2grey4", imageop_grey2grey4, METH_VARARGS },
{ "dither2mono", imageop_dither2mono, METH_VARARGS },
{ "dither2grey2", imageop_dither2grey2, METH_VARARGS },
{ "mono2grey", imageop_mono2grey, METH_VARARGS },
{ "grey22grey", imageop_grey22grey, METH_VARARGS },
{ "grey42grey", imageop_grey42grey, METH_VARARGS },
{ "tovideo", imageop_tovideo, METH_VARARGS },
{ "rgb2rgb8", imageop_rgb2rgb8, METH_VARARGS },
{ "rgb82rgb", imageop_rgb82rgb, METH_VARARGS },
{ "rgb2grey", imageop_rgb2grey, METH_VARARGS },
{ "grey2rgb", imageop_grey2rgb, METH_VARARGS },
{ 0, 0 }
};
PyMODINIT_FUNC
initimageop(void)
{
PyObject *m, *d;
m = Py_InitModule("imageop", imageop_methods);
d = PyModule_GetDict(m);
ImageopError = PyErr_NewException("imageop.error", NULL, NULL);
if (ImageopError != NULL)
PyDict_SetItemString(d, "error", ImageopError);
}