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-rw-r--r--Modules/imageop.c785
1 files changed, 0 insertions, 785 deletions
diff --git a/Modules/imageop.c b/Modules/imageop.c
deleted file mode 100644
index 92f805a..0000000
--- a/Modules/imageop.c
+++ /dev/null
@@ -1,785 +0,0 @@
-
-/* 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 *ImageopDict;
-
-/* If this function returns true (the default if anything goes wrong), we're
- behaving in a backward-compatible way with respect to how multi-byte pixels
- are stored in the strings. The code in this module was originally written
- for an SGI which is a big-endian system, and so the old code assumed that
- 4-byte integers hold the R, G, and B values in a particular order.
- However, on little-endian systems the order is reversed, and so not
- actually compatible with what gl.lrectwrite and imgfile expect.
- (gl.lrectwrite and imgfile are also SGI-specific, however, it is
- conceivable that the data handled here comes from or goes to an SGI or that
- it is otherwise used in the expectation that the byte order in the strings
- is as specified.)
-
- The function returns the value of the module variable
- "backward_compatible", or 1 if the variable does not exist or is not an
- int.
- */
-
-static int
-imageop_backward_compatible(void)
-{
- static PyObject *bcos;
- PyObject *bco;
- long rc;
-
- if (ImageopDict == NULL) /* "cannot happen" */
- return 1;
- if (bcos == NULL) {
- /* cache string object for future use */
- bcos = PyString_FromString("backward_compatible");
- if (bcos == NULL)
- return 1;
- }
- bco = PyDict_GetItem(ImageopDict, bcos);
- if (bco == NULL)
- return 1;
- if (!PyInt_Check(bco))
- return 1;
- rc = PyInt_AsLong(bco);
- if (PyErr_Occurred()) {
- /* not an integer, or too large, or something */
- PyErr_Clear();
- rc = 1;
- }
- return rc != 0; /* convert to values 0, 1 */
-}
-
-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;
- unsigned char *cp;
- unsigned char *ncp;
- PyObject *rv;
- int i, r, g, b;
- int backward_compatible = imageop_backward_compatible();
-
- 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 */
- if (backward_compatible) {
- Py_UInt32 value = * (Py_UInt32 *) cp;
- cp += 4;
- r = (int) ((value & 0xff) / 255. * 7. + .5);
- g = (int) (((value >> 8) & 0xff) / 255. * 7. + .5);
- b = (int) (((value >> 16) & 0xff) / 255. * 3. + .5);
- } else {
- cp++; /* skip alpha channel */
- b = (int) (*cp++ / 255. * 3. + .5);
- g = (int) (*cp++ / 255. * 7. + .5);
- r = (int) (*cp++ / 255. * 7. + .5);
- }
- *ncp++ = (unsigned char)((r<<5) | (b<<3) | g);
- }
- return rv;
-}
-
-static PyObject *
-imageop_rgb82rgb(PyObject *self, PyObject *args)
-{
- int x, y, len, nlen;
- unsigned char *cp;
- unsigned char *ncp;
- PyObject *rv;
- int i, r, g, b;
- unsigned char value;
- int backward_compatible = imageop_backward_compatible();
-
- 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 = (unsigned char *)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;
- if (backward_compatible) {
- Py_UInt32 nvalue = r | (g<<8) | (b<<16);
- * (Py_UInt32 *) ncp = nvalue;
- ncp += 4;
- } else {
- *ncp++ = 0;
- *ncp++ = b;
- *ncp++ = g;
- *ncp++ = r;
- }
- }
- return rv;
-}
-
-static PyObject *
-imageop_rgb2grey(PyObject *self, PyObject *args)
-{
- int x, y, len, nlen;
- unsigned char *cp;
- unsigned char *ncp;
- PyObject *rv;
- int i, r, g, b;
- int nvalue;
- int backward_compatible = imageop_backward_compatible();
-
- 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++ ) {
- if (backward_compatible) {
- Py_UInt32 value = * (Py_UInt32 *) cp;
- cp += 4;
- r = (int) ((value & 0xff) / 255. * 7. + .5);
- g = (int) (((value >> 8) & 0xff) / 255. * 7. + .5);
- b = (int) (((value >> 16) & 0xff) / 255. * 3. + .5);
- } else {
- cp++; /* skip alpha channel */
- b = *cp++;
- g = *cp++;
- r = *cp++;
- }
- 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;
- unsigned char *ncp;
- PyObject *rv;
- int i;
- unsigned char value;
- int backward_compatible = imageop_backward_compatible();
-
- 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 = (unsigned char *)PyString_AsString(rv);
-
- for ( i=0; i < nlen; i++ ) {
- value = *cp++;
- if (backward_compatible) {
- * (Py_UInt32 *) ncp = (Py_UInt32) value | ((Py_UInt32) value << 8 ) | ((Py_UInt32) value << 16);
- ncp += 4;
- } else {
- *ncp++ = 0;
- *ncp++ = value;
- *ncp++ = value;
- *ncp++ = value;
- }
- }
- 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;
- m = Py_InitModule("imageop", imageop_methods);
- if (m == NULL)
- return;
- ImageopDict = PyModule_GetDict(m);
- ImageopError = PyErr_NewException("imageop.error", NULL, NULL);
- if (ImageopError != NULL)
- PyDict_SetItemString(ImageopDict, "error", ImageopError);
-}
generated by cgit v0.12 at 2024-12-04 08:36:28 (GMT)