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-rw-r--r--Modules/imgfile.c504
1 files changed, 0 insertions, 504 deletions
diff --git a/Modules/imgfile.c b/Modules/imgfile.c
deleted file mode 100644
index bb85a78..0000000
--- a/Modules/imgfile.c
+++ /dev/null
@@ -1,504 +0,0 @@
-
-/* 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);
-}
-
-
-
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