/* IMGFILE module - Interface to sgi libimage */ /* XXX This module should be done better at some point. It should return** an object of image file class, and have routines to manipulate these** image files in a neater way (so you can get rgb images off a greyscale** file, for instance, or do a straight display without having to get the** image bits into python, etc).**** Warning: this module is very non-reentrant (esp. the readscaled stuff)*/ #include "Python.h" #include <gl/image.h> #include "/usr/people/4Dgifts/iristools/include/izoom.h" /* Bunch of missing extern decls; keep gcc -Wall happy... */extern void i_seterror();extern void iclose();extern void filterzoom();extern void putrow();extern void getrow(); static PyObject * ImgfileError; /* Exception we raise for various trouble */ static int top_to_bottom; /* True if we want top-to-bottom images */ /* The image library does not always call the error hander :-(, therefore we have a global variable indicating that it was called. It is cleared by imgfile_open(). */ static int error_called; /* The error handler */ static voidimgfile_error(char *str){ PyErr_SetString(ImgfileError, str); error_called = 1; return; /* To imglib, which will return a failure indicator */} /* Open an image file and return a pointer to it. Make sure we raise an exception if we fail. */ static IMAGE *imgfile_open(char *fname){ IMAGE *image; i_seterror(imgfile_error); error_called = 0; errno = 0; if ( (image = iopen(fname, "r")) == NULL ) { /* Error may already be set by imgfile_error */ if ( !error_called ) { if (errno) PyErr_SetFromErrno(ImgfileError); else PyErr_SetString(ImgfileError, "Can't open image file"); } return NULL; } return image;} static PyObject *imgfile_ttob(PyObject *self, PyObject *args){ int newval; PyObject *rv; if (!PyArg_ParseTuple(args, "i:ttob", &newval)) return NULL; rv = PyInt_FromLong(top_to_bottom); top_to_bottom = newval; return rv;} static PyObject *imgfile_read(PyObject *self, PyObject *args){ char *fname; PyObject *rv; int xsize, ysize, zsize; char *cdatap; long *idatap; static short rs[8192], gs[8192], bs[8192]; int x, y; IMAGE *image; int yfirst, ylast, ystep; if ( !PyArg_ParseTuple(args, "s:read", &fname) ) return NULL; if ( (image = imgfile_open(fname)) == NULL ) return NULL; if ( image->colormap != CM_NORMAL ) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle CM_NORMAL images"); return NULL; } if ( BPP(image->type) != 1 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle imgfiles with bpp!=1"); return NULL; } xsize = image->xsize; ysize = image->ysize; zsize = image->zsize; if ( zsize != 1 && zsize != 3) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( xsize > 8192 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } if ( zsize == 3 ) zsize = 4; rv = PyString_FromStringAndSize((char *)NULL, xsize*ysize*zsize); if ( rv == NULL ) { iclose(image); return NULL; } cdatap = PyString_AsString(rv); idatap = (long *)cdatap; if (top_to_bottom) { yfirst = ysize-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ysize; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { if ( zsize == 1 ) { getrow(image, rs, y, 0); for(x=0; x<xsize; x++ ) *cdatap++ = rs[x]; } else { getrow(image, rs, y, 0); getrow(image, gs, y, 1); getrow(image, bs, y, 2); for(x=0; x<xsize; x++ ) *idatap++ = (rs[x] & 0xff) | ((gs[x] & 0xff)<<8) | ((bs[x] & 0xff)<<16); } } iclose(image); if ( error_called ) { Py_DECREF(rv); return NULL; } return rv;} static IMAGE *glob_image;static long *glob_datap;static int glob_width, glob_z, glob_ysize; static voidxs_get(short *buf, int y){ if (top_to_bottom) getrow(glob_image, buf, (glob_ysize-1-y), glob_z); else getrow(glob_image, buf, y, glob_z);} static voidxs_put_c(short *buf, int y){ char *datap = (char *)glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ = (*buf++) & 0xff;} static voidxs_put_0(short *buf, int y){ long *datap = glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ = (*buf++) & 0xff;}static voidxs_put_12(short *buf, int y){ long *datap = glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ |= ((*buf++) & 0xff) << (glob_z*8);} static voidxscale(IMAGE *image, int xsize, int ysize, int zsize, long *datap, int xnew, int ynew, int fmode, double blur){ glob_image = image; glob_datap = datap; glob_width = xnew; glob_ysize = ysize; if ( zsize == 1 ) { glob_z = 0; filterzoom(xs_get, xs_put_c, xsize, ysize, xnew, ynew, fmode, blur); } else { glob_z = 0; filterzoom(xs_get, xs_put_0, xsize, ysize, xnew, ynew, fmode, blur); glob_z = 1; filterzoom(xs_get, xs_put_12, xsize, ysize, xnew, ynew, fmode, blur); glob_z = 2; filterzoom(xs_get, xs_put_12, xsize, ysize, xnew, ynew, fmode, blur); }} static PyObject *imgfile_readscaled(PyObject *self, PyObject *args){ char *fname; PyObject *rv; int xsize, ysize, zsize; char *cdatap; long *idatap; static short rs[8192], gs[8192], bs[8192]; int x, y; int xwtd, ywtd, xorig, yorig; float xfac, yfac; IMAGE *image; char *filter; double blur = 1.0; int extended; int fmode = 0; int yfirst, ylast, ystep; /* ** Parse args. Funny, since arg 4 and 5 are optional ** (filter name and blur factor). Also, 4 or 5 arguments indicates ** extended scale algorithm in stead of simple-minded pixel drop/dup. */ extended = PyTuple_Size(args) >= 4; if ( !PyArg_ParseTuple(args, "sii|sd", &fname, &xwtd, &ywtd, &filter, &blur) ) return NULL; /* ** Check parameters, open file and check type, rows, etc. */ if ( extended ) { if ( strcmp(filter, "impulse") == 0 ) fmode = IMPULSE; else if ( strcmp( filter, "box") == 0 ) fmode = BOX; else if ( strcmp( filter, "triangle") == 0 ) fmode = TRIANGLE; else if ( strcmp( filter, "quadratic") == 0 ) fmode = QUADRATIC; else if ( strcmp( filter, "gaussian") == 0 ) fmode = GAUSSIAN; else { PyErr_SetString(ImgfileError, "Unknown filter type"); return NULL; } } if ( (image = imgfile_open(fname)) == NULL ) return NULL; if ( image->colormap != CM_NORMAL ) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle CM_NORMAL images"); return NULL; } if ( BPP(image->type) != 1 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle imgfiles with bpp!=1"); return NULL; } xsize = image->xsize; ysize = image->ysize; zsize = image->zsize; if ( zsize != 1 && zsize != 3) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( xsize > 8192 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } if ( zsize == 3 ) zsize = 4; rv = PyString_FromStringAndSize(NULL, xwtd*ywtd*zsize); if ( rv == NULL ) { iclose(image); return NULL; } PyFPE_START_PROTECT("readscaled", return 0) xfac = (float)xsize/(float)xwtd; yfac = (float)ysize/(float)ywtd; PyFPE_END_PROTECT(yfac) cdatap = PyString_AsString(rv); idatap = (long *)cdatap; if ( extended ) { xscale(image, xsize, ysize, zsize, idatap, xwtd, ywtd, fmode, blur); } else { if (top_to_bottom) { yfirst = ywtd-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ywtd; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { yorig = (int)(y*yfac); if ( zsize == 1 ) { getrow(image, rs, yorig, 0); for(x=0; x<xwtd; x++ ) { *cdatap++ = rs[(int)(x*xfac)]; } } else { getrow(image, rs, yorig, 0); getrow(image, gs, yorig, 1); getrow(image, bs, yorig, 2); for(x=0; x<xwtd; x++ ) { xorig = (int)(x*xfac); *idatap++ = (rs[xorig] & 0xff) | ((gs[xorig] & 0xff)<<8) | ((bs[xorig] & 0xff)<<16); } } } } iclose(image); if ( error_called ) { Py_DECREF(rv); return NULL; } return rv;} static PyObject *imgfile_getsizes(PyObject *self, PyObject *args){ char *fname; PyObject *rv; IMAGE *image; if ( !PyArg_ParseTuple(args, "s:getsizes", &fname) ) return NULL; if ( (image = imgfile_open(fname)) == NULL ) return NULL; rv = Py_BuildValue("(iii)", image->xsize, image->ysize, image->zsize); iclose(image); return rv;} static PyObject *imgfile_write(PyObject *self, PyObject *args){ IMAGE *image; char *fname; int xsize, ysize, zsize, len; char *cdatap; long *idatap; short rs[8192], gs[8192], bs[8192]; short r, g, b; long rgb; int x, y; int yfirst, ylast, ystep; if ( !PyArg_ParseTuple(args, "ss#iii:write", &fname, &cdatap, &len, &xsize, &ysize, &zsize) ) return NULL; if ( zsize != 1 && zsize != 3 ) { PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( len != xsize * ysize * (zsize == 1 ? 1 : 4) ) { PyErr_SetString(ImgfileError, "Data does not match sizes"); return NULL; } if ( xsize > 8192 ) { PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } error_called = 0; errno = 0; image =iopen(fname, "w", RLE(1), 3, xsize, ysize, zsize); if ( image == 0 ) { if ( ! error_called ) { if (errno) PyErr_SetFromErrno(ImgfileError); else PyErr_SetString(ImgfileError, "Can't create image file"); } return NULL; } idatap = (long *)cdatap; if (top_to_bottom) { yfirst = ysize-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ysize; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { if ( zsize == 1 ) { for( x=0; x<xsize; x++ ) rs[x] = *cdatap++; putrow(image, rs, y, 0); } else { for( x=0; x<xsize; x++ ) { rgb = *idatap++; r = rgb & 0xff; g = (rgb >> 8 ) & 0xff; b = (rgb >> 16 ) & 0xff; rs[x] = r; gs[x] = g; bs[x] = b; } putrow(image, rs, y, 0); putrow(image, gs, y, 1); putrow(image, bs, y, 2); } } iclose(image); if ( error_called ) return NULL; Py_INCREF(Py_None); return Py_None; } static PyMethodDef imgfile_methods[] = { { "getsizes", imgfile_getsizes, METH_VARARGS }, { "read", imgfile_read, METH_VARARGS }, { "readscaled", imgfile_readscaled, METH_VARARGS}, { "write", imgfile_write, METH_VARARGS }, { "ttob", imgfile_ttob, METH_VARARGS }, { NULL, NULL } /* Sentinel */}; voidinitimgfile(void){ PyObject *m, *d; m = Py_InitModule("imgfile", imgfile_methods); if (m == NULL) return; d = PyModule_GetDict(m); ImgfileError = PyErr_NewException("imgfile.error", NULL, NULL); if (ImgfileError != NULL) PyDict_SetItemString(d, "error", ImgfileError);Lines 1–500 of 504. 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/* IMGFILE module - Interface to sgi libimage */ /* XXX This module should be done better at some point. It should return ** an object of image file class, and have routines to manipulate these ** image files in a neater way (so you can get rgb images off a greyscale ** file, for instance, or do a straight display without having to get the ** image bits into python, etc). ** ** Warning: this module is very non-reentrant (esp. the readscaled stuff) */ #include "Python.h" #include <gl/image.h> #include "/usr/people/4Dgifts/iristools/include/izoom.h" /* Bunch of missing extern decls; keep gcc -Wall happy... */ extern void i_seterror(); extern void iclose(); extern void filterzoom(); extern void putrow(); extern void getrow(); static PyObject * ImgfileError; /* Exception we raise for various trouble */ static int top_to_bottom; /* True if we want top-to-bottom images */ /* The image library does not always call the error hander :-(, therefore we have a global variable indicating that it was called. It is cleared by imgfile_open(). */ static int error_called; /* The error handler */ static void imgfile_error(char *str) { PyErr_SetString(ImgfileError, str); error_called = 1; return; /* To imglib, which will return a failure indicator */ } /* Open an image file and return a pointer to it. Make sure we raise an exception if we fail. */ static IMAGE * imgfile_open(char *fname) { IMAGE *image; i_seterror(imgfile_error); error_called = 0; errno = 0; if ( (image = iopen(fname, "r")) == NULL ) { /* Error may already be set by imgfile_error */ if ( !error_called ) { if (errno) PyErr_SetFromErrno(ImgfileError); else PyErr_SetString(ImgfileError, "Can't open image file"); } return NULL; } return image; } static PyObject * imgfile_ttob(PyObject *self, PyObject *args) { int newval; PyObject *rv; if (!PyArg_ParseTuple(args, "i:ttob", &newval)) return NULL; rv = PyInt_FromLong(top_to_bottom); top_to_bottom = newval; return rv; } static PyObject * imgfile_read(PyObject *self, PyObject *args) { char *fname; PyObject *rv; int xsize, ysize, zsize; char *cdatap; long *idatap; static short rs[8192], gs[8192], bs[8192]; int x, y; IMAGE *image; int yfirst, ylast, ystep; if ( !PyArg_ParseTuple(args, "s:read", &fname) ) return NULL; if ( (image = imgfile_open(fname)) == NULL ) return NULL; if ( image->colormap != CM_NORMAL ) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle CM_NORMAL images"); return NULL; } if ( BPP(image->type) != 1 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle imgfiles with bpp!=1"); return NULL; } xsize = image->xsize; ysize = image->ysize; zsize = image->zsize; if ( zsize != 1 && zsize != 3) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( xsize > 8192 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } if ( zsize == 3 ) zsize = 4; rv = PyString_FromStringAndSize((char *)NULL, xsize*ysize*zsize); if ( rv == NULL ) { iclose(image); return NULL; } cdatap = PyString_AsString(rv); idatap = (long *)cdatap; if (top_to_bottom) { yfirst = ysize-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ysize; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { if ( zsize == 1 ) { getrow(image, rs, y, 0); for(x=0; x<xsize; x++ ) *cdatap++ = rs[x]; } else { getrow(image, rs, y, 0); getrow(image, gs, y, 1); getrow(image, bs, y, 2); for(x=0; x<xsize; x++ ) *idatap++ = (rs[x] & 0xff) | ((gs[x] & 0xff)<<8) | ((bs[x] & 0xff)<<16); } } iclose(image); if ( error_called ) { Py_DECREF(rv); return NULL; } return rv; } static IMAGE *glob_image; static long *glob_datap; static int glob_width, glob_z, glob_ysize; static void xs_get(short *buf, int y) { if (top_to_bottom) getrow(glob_image, buf, (glob_ysize-1-y), glob_z); else getrow(glob_image, buf, y, glob_z); } static void xs_put_c(short *buf, int y) { char *datap = (char *)glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ = (*buf++) & 0xff; } static void xs_put_0(short *buf, int y) { long *datap = glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ = (*buf++) & 0xff; } static void xs_put_12(short *buf, int y) { long *datap = glob_datap + y*glob_width; int width = glob_width; while ( width-- ) *datap++ |= ((*buf++) & 0xff) << (glob_z*8); } static void xscale(IMAGE *image, int xsize, int ysize, int zsize, long *datap, int xnew, int ynew, int fmode, double blur) { glob_image = image; glob_datap = datap; glob_width = xnew; glob_ysize = ysize; if ( zsize == 1 ) { glob_z = 0; filterzoom(xs_get, xs_put_c, xsize, ysize, xnew, ynew, fmode, blur); } else { glob_z = 0; filterzoom(xs_get, xs_put_0, xsize, ysize, xnew, ynew, fmode, blur); glob_z = 1; filterzoom(xs_get, xs_put_12, xsize, ysize, xnew, ynew, fmode, blur); glob_z = 2; filterzoom(xs_get, xs_put_12, xsize, ysize, xnew, ynew, fmode, blur); } } static PyObject * imgfile_readscaled(PyObject *self, PyObject *args) { char *fname; PyObject *rv; int xsize, ysize, zsize; char *cdatap; long *idatap; static short rs[8192], gs[8192], bs[8192]; int x, y; int xwtd, ywtd, xorig, yorig; float xfac, yfac; IMAGE *image; char *filter; double blur = 1.0; int extended; int fmode = 0; int yfirst, ylast, ystep; /* ** Parse args. Funny, since arg 4 and 5 are optional ** (filter name and blur factor). Also, 4 or 5 arguments indicates ** extended scale algorithm in stead of simple-minded pixel drop/dup. */ extended = PyTuple_Size(args) >= 4; if ( !PyArg_ParseTuple(args, "sii|sd", &fname, &xwtd, &ywtd, &filter, &blur) ) return NULL; /* ** Check parameters, open file and check type, rows, etc. */ if ( extended ) { if ( strcmp(filter, "impulse") == 0 ) fmode = IMPULSE; else if ( strcmp( filter, "box") == 0 ) fmode = BOX; else if ( strcmp( filter, "triangle") == 0 ) fmode = TRIANGLE; else if ( strcmp( filter, "quadratic") == 0 ) fmode = QUADRATIC; else if ( strcmp( filter, "gaussian") == 0 ) fmode = GAUSSIAN; else { PyErr_SetString(ImgfileError, "Unknown filter type"); return NULL; } } if ( (image = imgfile_open(fname)) == NULL ) return NULL; if ( image->colormap != CM_NORMAL ) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle CM_NORMAL images"); return NULL; } if ( BPP(image->type) != 1 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle imgfiles with bpp!=1"); return NULL; } xsize = image->xsize; ysize = image->ysize; zsize = image->zsize; if ( zsize != 1 && zsize != 3) { iclose(image); PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( xsize > 8192 ) { iclose(image); PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } if ( zsize == 3 ) zsize = 4; rv = PyString_FromStringAndSize(NULL, xwtd*ywtd*zsize); if ( rv == NULL ) { iclose(image); return NULL; } PyFPE_START_PROTECT("readscaled", return 0) xfac = (float)xsize/(float)xwtd; yfac = (float)ysize/(float)ywtd; PyFPE_END_PROTECT(yfac) cdatap = PyString_AsString(rv); idatap = (long *)cdatap; if ( extended ) { xscale(image, xsize, ysize, zsize, idatap, xwtd, ywtd, fmode, blur); } else { if (top_to_bottom) { yfirst = ywtd-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ywtd; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { yorig = (int)(y*yfac); if ( zsize == 1 ) { getrow(image, rs, yorig, 0); for(x=0; x<xwtd; x++ ) { *cdatap++ = rs[(int)(x*xfac)]; } } else { getrow(image, rs, yorig, 0); getrow(image, gs, yorig, 1); getrow(image, bs, yorig, 2); for(x=0; x<xwtd; x++ ) { xorig = (int)(x*xfac); *idatap++ = (rs[xorig] & 0xff) | ((gs[xorig] & 0xff)<<8) | ((bs[xorig] & 0xff)<<16); } } } } iclose(image); if ( error_called ) { Py_DECREF(rv); return NULL; } return rv; } static PyObject * imgfile_getsizes(PyObject *self, PyObject *args) { char *fname; PyObject *rv; IMAGE *image; if ( !PyArg_ParseTuple(args, "s:getsizes", &fname) ) return NULL; if ( (image = imgfile_open(fname)) == NULL ) return NULL; rv = Py_BuildValue("(iii)", image->xsize, image->ysize, image->zsize); iclose(image); return rv; } static PyObject * imgfile_write(PyObject *self, PyObject *args) { IMAGE *image; char *fname; int xsize, ysize, zsize, len; char *cdatap; long *idatap; short rs[8192], gs[8192], bs[8192]; short r, g, b; long rgb; int x, y; int yfirst, ylast, ystep; if ( !PyArg_ParseTuple(args, "ss#iii:write", &fname, &cdatap, &len, &xsize, &ysize, &zsize) ) return NULL; if ( zsize != 1 && zsize != 3 ) { PyErr_SetString(ImgfileError, "Can only handle 1 or 3 byte pixels"); return NULL; } if ( len != xsize * ysize * (zsize == 1 ? 1 : 4) ) { PyErr_SetString(ImgfileError, "Data does not match sizes"); return NULL; } if ( xsize > 8192 ) { PyErr_SetString(ImgfileError, "Can't handle image with > 8192 columns"); return NULL; } error_called = 0; errno = 0; image =iopen(fname, "w", RLE(1), 3, xsize, ysize, zsize); if ( image == 0 ) { if ( ! error_called ) { if (errno) PyErr_SetFromErrno(ImgfileError); else PyErr_SetString(ImgfileError, "Can't create image file"); } return NULL; } idatap = (long *)cdatap; if (top_to_bottom) { yfirst = ysize-1; ylast = -1; ystep = -1; } else { yfirst = 0; ylast = ysize; ystep = 1; } for ( y=yfirst; y != ylast && !error_called; y += ystep ) { if ( zsize == 1 ) { for( x=0; x<xsize; x++ ) rs[x] = *cdatap++; putrow(image, rs, y, 0); } else { for( x=0; x<xsize; x++ ) { rgb = *idatap++; r = rgb & 0xff; g = (rgb >> 8 ) & 0xff; b = (rgb >> 16 ) & 0xff; rs[x] = r; gs[x] = g; bs[x] = b; } putrow(image, rs, y, 0); putrow(image, gs, y, 1); putrow(image, bs, y, 2); } } iclose(image); if ( error_called ) return NULL; Py_INCREF(Py_None); return Py_None; } static PyMethodDef imgfile_methods[] = { { "getsizes", imgfile_getsizes, METH_VARARGS }, { "read", imgfile_read, METH_VARARGS }, { "readscaled", imgfile_readscaled, METH_VARARGS}, { "write", imgfile_write, METH_VARARGS }, { "ttob", imgfile_ttob, METH_VARARGS }, { NULL, NULL } /* Sentinel */ }; void initimgfile(void) { PyObject *m, *d; m = Py_InitModule("imgfile", imgfile_methods); if (m == NULL) return; d = PyModule_GetDict(m); ImgfileError = PyErr_NewException("imgfile.error", NULL, NULL); if (ImgfileError != NULL) PyDict_SetItemString(d, "error", ImgfileError);