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Pillow/_imaging.c
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/*
* The Python Imaging Library.
*
* the imaging library bindings
*
* history:
* 1995-09-24 fl Created
* 1996-03-24 fl Ready for first public release (release 0.0)
* 1996-03-25 fl Added fromstring (for Jack's "img" library)
* 1996-03-28 fl Added channel operations
* 1996-03-31 fl Added point operation
* 1996-04-08 fl Added new/new_block/new_array factories
* 1996-04-13 fl Added decoders
* 1996-05-04 fl Added palette hack
* 1996-05-12 fl Compile cleanly as C++
* 1996-05-19 fl Added matrix conversions, gradient fills
* 1996-05-27 fl Added display_mode
* 1996-07-22 fl Added getbbox, offset
* 1996-07-23 fl Added sequence semantics
* 1996-08-13 fl Added logical operators, point mode
* 1996-08-16 fl Modified paste interface
* 1996-09-06 fl Added putdata methods, use abstract interface
* 1996-11-01 fl Added xbm encoder
* 1996-11-04 fl Added experimental path stuff, draw_lines, etc
* 1996-12-10 fl Added zip decoder, crc32 interface
* 1996-12-14 fl Added modulo arithmetics
* 1996-12-29 fl Added zip encoder
* 1997-01-03 fl Added fli and msp decoders
* 1997-01-04 fl Added experimental sun_rle and tga_rle decoders
* 1997-01-05 fl Added gif encoder, getpalette hack
* 1997-02-23 fl Added histogram mask
* 1997-05-12 fl Minor tweaks to match the IFUNC95 interface
* 1997-05-21 fl Added noise generator, spread effect
* 1997-06-05 fl Added mandelbrot generator
* 1997-08-02 fl Modified putpalette to coerce image mode if necessary
* 1998-01-11 fl Added INT32 support
* 1998-01-22 fl Fixed draw_points to draw the last point too
* 1998-06-28 fl Added getpixel, getink, draw_ink
* 1998-07-12 fl Added getextrema
* 1998-07-17 fl Added point conversion to arbitrary formats
* 1998-09-21 fl Added support for resampling filters
* 1998-09-22 fl Added support for quad transform
* 1998-12-29 fl Added support for arcs, chords, and pieslices
* 1999-01-10 fl Added some experimental arrow graphics stuff
* 1999-02-06 fl Added draw_bitmap, font acceleration stuff
* 2001-04-17 fl Fixed some egcs compiler nits
* 2001-09-17 fl Added screen grab primitives (win32)
* 2002-03-09 fl Added stretch primitive
* 2002-03-10 fl Fixed filter handling in rotate
* 2002-06-06 fl Added I, F, and RGB support to putdata
* 2002-06-08 fl Added rankfilter
* 2002-06-09 fl Added support for user-defined filter kernels
* 2002-11-19 fl Added clipboard grab primitives (win32)
* 2002-12-11 fl Added draw context
* 2003-04-26 fl Tweaks for Python 2.3 beta 1
* 2003-05-21 fl Added createwindow primitive (win32)
* 2003-09-13 fl Added thread section hooks
* 2003-09-15 fl Added expand helper
* 2003-09-26 fl Added experimental LA support
* 2004-02-21 fl Handle zero-size images in quantize
* 2004-06-05 fl Added ptr attribute (used to access Imaging objects)
* 2004-06-05 fl Don't crash when fetching pixels from zero-wide images
* 2004-09-17 fl Added getcolors
* 2004-10-04 fl Added modefilter
* 2005-10-02 fl Added access proxy
* 2006-06-18 fl Always draw last point in polyline
*
* Copyright (c) 1997-2006 by Secret Labs AB
* Copyright (c) 1995-2006 by Fredrik Lundh
*
* See the README file for information on usage and redistribution.
*/
#define PILLOW_VERSION "2.1.0"
#include "Python.h"
#ifdef HAVE_LIBZ
#include "zlib.h"
#endif
#include "Imaging.h"
#include "py3.h"
/* Configuration stuff. Feel free to undef things you don't need. */
#define WITH_IMAGECHOPS /* ImageChops support */
#define WITH_IMAGEDRAW /* ImageDraw support */
#define WITH_MAPPING /* use memory mapping to read some file formats */
#define WITH_IMAGEPATH /* ImagePath stuff */
#define WITH_ARROW /* arrow graphics stuff (experimental) */
#define WITH_EFFECTS /* special effects */
#define WITH_QUANTIZE /* quantization support */
#define WITH_RANKFILTER /* rank filter */
#define WITH_MODEFILTER /* mode filter */
#define WITH_THREADING /* "friendly" threading support */
#define WITH_UNSHARPMASK /* Kevin Cazabon's unsharpmask module */
#define WITH_DEBUG /* extra debugging interfaces */
/* PIL Plus extensions */
#undef WITH_CRACKCODE /* pil plus */
#undef VERBOSE
#define CLIP(x) ((x) <= 0 ? 0 : (x) < 256 ? (x) : 255)
#define B16(p, i) ((((int)p[(i)]) << 8) + p[(i)+1])
#define L16(p, i) ((((int)p[(i)+1]) << 8) + p[(i)])
#define S16(v) ((v) < 32768 ? (v) : ((v) - 65536))
/* -------------------------------------------------------------------- */
/* OBJECT ADMINISTRATION */
/* -------------------------------------------------------------------- */
typedef struct {
PyObject_HEAD
Imaging image;
ImagingAccess access;
} ImagingObject;
static PyTypeObject Imaging_Type;
#ifdef WITH_IMAGEDRAW
typedef struct
{
/* to write a character, cut out sxy from glyph data, place
at current position plus dxy, and advance by (dx, dy) */
int dx, dy;
int dx0, dy0, dx1, dy1;
int sx0, sy0, sx1, sy1;
} Glyph;
typedef struct {
PyObject_HEAD
ImagingObject* ref;
Imaging bitmap;
int ysize;
int baseline;
Glyph glyphs[256];
} ImagingFontObject;
static PyTypeObject ImagingFont_Type;
typedef struct {
PyObject_HEAD
ImagingObject* image;
UINT8 ink[4];
int blend;
} ImagingDrawObject;
static PyTypeObject ImagingDraw_Type;
#endif
typedef struct {
PyObject_HEAD
ImagingObject* image;
int readonly;
} PixelAccessObject;
static PyTypeObject PixelAccess_Type;
PyObject*
PyImagingNew(Imaging imOut)
{
ImagingObject* imagep;
if (!imOut)
return NULL;
imagep = PyObject_New(ImagingObject, &Imaging_Type);
if (imagep == NULL) {
ImagingDelete(imOut);
return NULL;
}
#ifdef VERBOSE
printf("imaging %p allocated\n", imagep);
#endif
imagep->image = imOut;
imagep->access = ImagingAccessNew(imOut);
return (PyObject*) imagep;
}
static void
_dealloc(ImagingObject* imagep)
{
#ifdef VERBOSE
printf("imaging %p deleted\n", imagep);
#endif
if (imagep->access)
ImagingAccessDelete(imagep->image, imagep->access);
ImagingDelete(imagep->image);
PyObject_Del(imagep);
}
#define PyImaging_Check(op) (Py_TYPE(op) == &Imaging_Type)
Imaging PyImaging_AsImaging(PyObject *op)
{
if (!PyImaging_Check(op)) {
PyErr_BadInternalCall();
return NULL;
}
return ((ImagingObject *)op)->image;
}
/* -------------------------------------------------------------------- */
/* THREAD HANDLING */
/* -------------------------------------------------------------------- */
void ImagingSectionEnter(ImagingSectionCookie* cookie)
{
#ifdef WITH_THREADING
*cookie = (PyThreadState *) PyEval_SaveThread();
#endif
}
void ImagingSectionLeave(ImagingSectionCookie* cookie)
{
#ifdef WITH_THREADING
PyEval_RestoreThread((PyThreadState*) *cookie);
#endif
}
/* -------------------------------------------------------------------- */
/* BUFFER HANDLING */
/* -------------------------------------------------------------------- */
/* Python compatibility API */
int PyImaging_CheckBuffer(PyObject* buffer)
{
#if PY_VERSION_HEX >= 0x03000000
return PyObject_CheckBuffer(buffer);
#else
return PyObject_CheckBuffer(buffer) || PyObject_CheckReadBuffer(buffer);
#endif
}
int PyImaging_GetBuffer(PyObject* buffer, Py_buffer *view)
{
/* must call check_buffer first! */
#if PY_VERSION_HEX >= 0x03000000
return PyObject_GetBuffer(buffer, view, PyBUF_SIMPLE);
#else
/* Use new buffer protocol if available
(mmap doesn't support this in 2.7, go figure) */
if (PyObject_CheckBuffer(buffer)) {
return PyObject_GetBuffer(buffer, view, PyBUF_SIMPLE);
}
/* Pretend we support the new protocol; PyBuffer_Release happily ignores
calling bf_releasebuffer on objects that don't support it */
view->buf = NULL;
view->len = 0;
view->readonly = 1;
view->format = NULL;
view->ndim = 0;
view->shape = NULL;
view->strides = NULL;
view->suboffsets = NULL;
view->itemsize = 0;
view->internal = NULL;
Py_INCREF(buffer);
view->obj = buffer;
return PyObject_AsReadBuffer(buffer, (void *) &view->buf, &view->len);
#endif
}
/* -------------------------------------------------------------------- */
/* EXCEPTION REROUTING */
/* -------------------------------------------------------------------- */
/* error messages */
static const char* must_be_sequence = "argument must be a sequence";
static const char* wrong_mode = "unrecognized image mode";
static const char* wrong_raw_mode = "unrecognized raw mode";
static const char* outside_image = "image index out of range";
static const char* outside_palette = "palette index out of range";
static const char* no_palette = "image has no palette";
static const char* readonly = "image is readonly";
/* static const char* no_content = "image has no content"; */
void *
ImagingError_IOError(void)
{
PyErr_SetString(PyExc_IOError, "error when accessing file");
return NULL;
}
void *
ImagingError_MemoryError(void)
{
return PyErr_NoMemory();
}
void *
ImagingError_Mismatch(void)
{
PyErr_SetString(PyExc_ValueError, "images do not match");
return NULL;
}
void *
ImagingError_ModeError(void)
{
PyErr_SetString(PyExc_ValueError, "image has wrong mode");
return NULL;
}
void *
ImagingError_ValueError(const char *message)
{
PyErr_SetString(
PyExc_ValueError,
(message) ? (char*) message : "unrecognized argument value"
);
return NULL;
}
void
ImagingError_Clear(void)
{
PyErr_Clear();
}
/* -------------------------------------------------------------------- */
/* HELPERS */
/* -------------------------------------------------------------------- */
static int
getbands(const char* mode)
{
Imaging im;
int bands;
/* FIXME: add primitive to libImaging to avoid extra allocation */
im = ImagingNew(mode, 0, 0);
if (!im)
return -1;
bands = im->bands;
ImagingDelete(im);
return bands;
}
#define TYPE_UINT8 (0x100|sizeof(UINT8))
#define TYPE_INT32 (0x200|sizeof(INT32))
#define TYPE_FLOAT32 (0x300|sizeof(FLOAT32))
#define TYPE_DOUBLE (0x400|sizeof(double))
static void*
getlist(PyObject* arg, int* length, const char* wrong_length, int type)
{
int i, n;
void* list;
if (!PySequence_Check(arg)) {
PyErr_SetString(PyExc_TypeError, must_be_sequence);
return NULL;
}
n = PyObject_Length(arg);
if (length && wrong_length && n != *length) {
PyErr_SetString(PyExc_ValueError, wrong_length);
return NULL;
}
list = malloc(n * (type & 0xff));
if (!list)
return PyErr_NoMemory();
switch (type) {
case TYPE_UINT8:
if (PyList_Check(arg)) {
for (i = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(arg, i);
int temp = PyInt_AsLong(op);
((UINT8*)list)[i] = CLIP(temp);
}
} else {
for (i = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(arg, i);
int temp = PyInt_AsLong(op);
Py_XDECREF(op);
((UINT8*)list)[i] = CLIP(temp);
}
}
break;
case TYPE_INT32:
if (PyList_Check(arg)) {
for (i = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(arg, i);
int temp = PyInt_AsLong(op);
((INT32*)list)[i] = temp;
}
} else {
for (i = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(arg, i);
int temp = PyInt_AsLong(op);
Py_XDECREF(op);
((INT32*)list)[i] = temp;
}
}
break;
case TYPE_FLOAT32:
if (PyList_Check(arg)) {
for (i = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(arg, i);
double temp = PyFloat_AsDouble(op);
((FLOAT32*)list)[i] = (FLOAT32) temp;
}
} else {
for (i = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(arg, i);
double temp = PyFloat_AsDouble(op);
Py_XDECREF(op);
((FLOAT32*)list)[i] = (FLOAT32) temp;
}
}
break;
case TYPE_DOUBLE:
if (PyList_Check(arg)) {
for (i = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(arg, i);
double temp = PyFloat_AsDouble(op);
((double*)list)[i] = temp;
}
} else {
for (i = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(arg, i);
double temp = PyFloat_AsDouble(op);
Py_XDECREF(op);
((double*)list)[i] = temp;
}
}
break;
}
if (length)
*length = n;
PyErr_Clear();
return list;
}
static inline PyObject*
getpixel(Imaging im, ImagingAccess access, int x, int y)
{
union {
UINT8 b[4];
INT16 h;
INT32 i;
FLOAT32 f;
} pixel;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize) {
PyErr_SetString(PyExc_IndexError, outside_image);
return NULL;
}
access->get_pixel(im, x, y, &pixel);
switch (im->type) {
case IMAGING_TYPE_UINT8:
switch (im->bands) {
case 1:
return PyInt_FromLong(pixel.b[0]);
case 2:
return Py_BuildValue("BB", pixel.b[0], pixel.b[1]);
case 3:
return Py_BuildValue("BBB", pixel.b[0], pixel.b[1], pixel.b[2]);
case 4:
return Py_BuildValue("BBBB", pixel.b[0], pixel.b[1], pixel.b[2], pixel.b[3]);
}
break;
case IMAGING_TYPE_INT32:
return PyInt_FromLong(pixel.i);
case IMAGING_TYPE_FLOAT32:
return PyFloat_FromDouble(pixel.f);
case IMAGING_TYPE_SPECIAL:
if (strncmp(im->mode, "I;16", 4) == 0)
return PyInt_FromLong(pixel.h);
break;
}
/* unknown type */
Py_INCREF(Py_None);
return Py_None;
}
static char*
getink(PyObject* color, Imaging im, char* ink)
{
int r, g, b, a;
double f;
/* fill ink buffer (four bytes) with something that can
be cast to either UINT8 or INT32 */
switch (im->type) {
case IMAGING_TYPE_UINT8:
/* unsigned integer */
if (im->bands == 1) {
/* unsigned integer, single layer */
r = PyInt_AsLong(color);
if (r == -1 && PyErr_Occurred())
return NULL;
ink[0] = CLIP(r);
ink[1] = ink[2] = ink[3] = 0;
} else {
a = 255;
#if PY_VERSION_HEX >= 0x03000000
if (PyLong_Check(color)) {
r = (int) PyLong_AsLong(color);
#else
if (PyInt_Check(color) || PyLong_Check(color)) {
if (PyInt_Check(color))
r = PyInt_AS_LONG(color);
else
r = (int) PyLong_AsLong(color);
#endif
/* compatibility: ABGR */
a = (UINT8) (r >> 24);
b = (UINT8) (r >> 16);
g = (UINT8) (r >> 8);
r = (UINT8) r;
} else {
if (im->bands == 2) {
if (!PyArg_ParseTuple(color, "i|i", &r, &a))
return NULL;
g = b = r;
} else {
if (!PyArg_ParseTuple(color, "iii|i", &r, &g, &b, &a))
return NULL;
}
}
ink[0] = CLIP(r);
ink[1] = CLIP(g);
ink[2] = CLIP(b);
ink[3] = CLIP(a);
}
return ink;
case IMAGING_TYPE_INT32:
/* signed integer */
r = PyInt_AsLong(color);
if (r == -1 && PyErr_Occurred())
return NULL;
*(INT32*) ink = r;
return ink;
case IMAGING_TYPE_FLOAT32:
/* floating point */
f = PyFloat_AsDouble(color);
if (f == -1.0 && PyErr_Occurred())
return NULL;
*(FLOAT32*) ink = (FLOAT32) f;
return ink;
case IMAGING_TYPE_SPECIAL:
if (strncmp(im->mode, "I;16", 4) == 0) {
r = PyInt_AsLong(color);
if (r == -1 && PyErr_Occurred())
return NULL;
ink[0] = (UINT8) r;
ink[1] = (UINT8) (r >> 8);
ink[2] = ink[3] = 0;
return ink;
}
}
PyErr_SetString(PyExc_ValueError, wrong_mode);
return NULL;
}
/* -------------------------------------------------------------------- */
/* FACTORIES */
/* -------------------------------------------------------------------- */
static PyObject*
_fill(PyObject* self, PyObject* args)
{
char* mode;
int xsize, ysize;
PyObject* color;
char buffer[4];
Imaging im;
xsize = ysize = 256;
color = NULL;
if (!PyArg_ParseTuple(args, "s|(ii)O", &mode, &xsize, &ysize, &color))
return NULL;
im = ImagingNew(mode, xsize, ysize);
if (!im)
return NULL;
if (color) {
if (!getink(color, im, buffer)) {
ImagingDelete(im);
return NULL;
}
} else
buffer[0] = buffer[1] = buffer[2] = buffer[3] = 0;
(void) ImagingFill(im, buffer);
return PyImagingNew(im);
}
static PyObject*
_new(PyObject* self, PyObject* args)
{
char* mode;
int xsize, ysize;
if (!PyArg_ParseTuple(args, "s(ii)", &mode, &xsize, &ysize))
return NULL;
return PyImagingNew(ImagingNew(mode, xsize, ysize));
}
static PyObject*
_new_array(PyObject* self, PyObject* args)
{
char* mode;
int xsize, ysize;
if (!PyArg_ParseTuple(args, "s(ii)", &mode, &xsize, &ysize))
return NULL;
return PyImagingNew(ImagingNewArray(mode, xsize, ysize));
}
static PyObject*
_new_block(PyObject* self, PyObject* args)
{
char* mode;
int xsize, ysize;
if (!PyArg_ParseTuple(args, "s(ii)", &mode, &xsize, &ysize))
return NULL;
return PyImagingNew(ImagingNewBlock(mode, xsize, ysize));
}
static PyObject*
_getcount(PyObject* self, PyObject* args)
{
if (!PyArg_ParseTuple(args, ":getcount"))
return NULL;
return PyInt_FromLong(ImagingNewCount);
}
static PyObject*
_linear_gradient(PyObject* self, PyObject* args)
{
char* mode;
if (!PyArg_ParseTuple(args, "s", &mode))
return NULL;
return PyImagingNew(ImagingFillLinearGradient(mode));
}
static PyObject*
_radial_gradient(PyObject* self, PyObject* args)
{
char* mode;
if (!PyArg_ParseTuple(args, "s", &mode))
return NULL;
return PyImagingNew(ImagingFillRadialGradient(mode));
}
static PyObject*
_open_ppm(PyObject* self, PyObject* args)
{
char* filename;
if (!PyArg_ParseTuple(args, "s", &filename))
return NULL;
return PyImagingNew(ImagingOpenPPM(filename));
}
static PyObject*
_alpha_composite(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep1;
ImagingObject* imagep2;
if (!PyArg_ParseTuple(args, "O!O!",
&Imaging_Type, &imagep1,
&Imaging_Type, &imagep2))
return NULL;
return PyImagingNew(ImagingAlphaComposite(imagep1->image, imagep2->image));
}
static PyObject*
_blend(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep1;
ImagingObject* imagep2;
double alpha;
alpha = 0.5;
if (!PyArg_ParseTuple(args, "O!O!|d",
&Imaging_Type, &imagep1,
&Imaging_Type, &imagep2,
&alpha))
return NULL;
return PyImagingNew(ImagingBlend(imagep1->image, imagep2->image,
(float) alpha));
}
/* -------------------------------------------------------------------- */
/* METHODS */
/* -------------------------------------------------------------------- */
static PyObject*
_convert(ImagingObject* self, PyObject* args)
{
char* mode;
int dither = 0;
ImagingObject *paletteimage = NULL;
if (!PyArg_ParseTuple(args, "s|iO", &mode, &dither, &paletteimage))
return NULL;
if (paletteimage != NULL) {
if (!PyImaging_Check(paletteimage)) {
PyObject_Print((PyObject *)paletteimage, stderr, 0);
PyErr_SetString(PyExc_ValueError, "palette argument must be image with mode 'P'");
return NULL;
}
if (paletteimage->image->palette == NULL) {
PyErr_SetString(PyExc_ValueError, "null palette");
return NULL;
}
}
return PyImagingNew(ImagingConvert(self->image, mode, paletteimage ? paletteimage->image->palette : NULL, dither));
}
static PyObject*
_convert2(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep1;
ImagingObject* imagep2;
if (!PyArg_ParseTuple(args, "O!O!",
&Imaging_Type, &imagep1,
&Imaging_Type, &imagep2))
return NULL;
if (!ImagingConvert2(imagep1->image, imagep2->image))
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_convert_matrix(ImagingObject* self, PyObject* args)
{
char* mode;
float m[12];
if (!PyArg_ParseTuple(args, "s(ffff)", &mode, m+0, m+1, m+2, m+3)) {
PyErr_Clear();
if (!PyArg_ParseTuple(args, "s(ffffffffffff)", &mode,
m+0, m+1, m+2, m+3,
m+4, m+5, m+6, m+7,
m+8, m+9, m+10, m+11))
return NULL;
}
return PyImagingNew(ImagingConvertMatrix(self->image, mode, m));
}
static PyObject*
_copy(ImagingObject* self, PyObject* args)
{
if (!PyArg_ParseTuple(args, ""))
return NULL;
return PyImagingNew(ImagingCopy(self->image));
}
static PyObject*
_copy2(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep1;
ImagingObject* imagep2;
if (!PyArg_ParseTuple(args, "O!O!",
&Imaging_Type, &imagep1,
&Imaging_Type, &imagep2))
return NULL;
if (!ImagingCopy2(imagep1->image, imagep2->image))
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_crop(ImagingObject* self, PyObject* args)
{
int x0, y0, x1, y1;
if (!PyArg_ParseTuple(args, "(iiii)", &x0, &y0, &x1, &y1))
return NULL;
return PyImagingNew(ImagingCrop(self->image, x0, y0, x1, y1));
}
static PyObject*
_expand(ImagingObject* self, PyObject* args)
{
int x, y;
int mode = 0;
if (!PyArg_ParseTuple(args, "ii|i", &x, &y, &mode))
return NULL;
return PyImagingNew(ImagingExpand(self->image, x, y, mode));
}
static PyObject*
_filter(ImagingObject* self, PyObject* args)
{
PyObject* imOut;
int kernelsize;
FLOAT32* kerneldata;
int xsize, ysize;
float divisor, offset;
PyObject* kernel = NULL;
if (!PyArg_ParseTuple(args, "(ii)ffO", &xsize, &ysize,
&divisor, &offset, &kernel))
return NULL;
/* get user-defined kernel */
kerneldata = getlist(kernel, &kernelsize, NULL, TYPE_FLOAT32);
if (!kerneldata)
return NULL;
if (kernelsize != xsize * ysize) {
free(kerneldata);
return ImagingError_ValueError("bad kernel size");
}
imOut = PyImagingNew(
ImagingFilter(self->image, xsize, ysize, kerneldata, offset, divisor)
);
free(kerneldata);
return imOut;
}
#ifdef WITH_UNSHARPMASK
static PyObject*
_gaussian_blur(ImagingObject* self, PyObject* args)
{
Imaging imIn;
Imaging imOut;
float radius = 0;
if (!PyArg_ParseTuple(args, "f", &radius))
return NULL;
imIn = self->image;
imOut = ImagingNew(imIn->mode, imIn->xsize, imIn->ysize);
if (!imOut)
return NULL;
if (!ImagingGaussianBlur(imIn, imOut, radius))
return NULL;
return PyImagingNew(imOut);
}
#endif
static PyObject*
_getpalette(ImagingObject* self, PyObject* args)
{
PyObject* palette;
int palettesize = 256;
int bits;
ImagingShuffler pack;
char* mode = "RGB";
char* rawmode = "RGB";
if (!PyArg_ParseTuple(args, "|ss", &mode, &rawmode))
return NULL;
if (!self->image->palette) {
PyErr_SetString(PyExc_ValueError, no_palette);
return NULL;
}
pack = ImagingFindPacker(mode, rawmode, &bits);
if (!pack) {
PyErr_SetString(PyExc_ValueError, wrong_raw_mode);
return NULL;
}
palette = PyBytes_FromStringAndSize(NULL, palettesize * bits / 8);
if (!palette)
return NULL;
pack((UINT8*) PyBytes_AsString(palette),
self->image->palette->palette, palettesize);
return palette;
}
static PyObject*
_getpalettemode(ImagingObject* self, PyObject* args)
{
if (!self->image->palette) {
PyErr_SetString(PyExc_ValueError, no_palette);
return NULL;
}
return PyUnicode_FromString(self->image->palette->mode);
}
static inline int
_getxy(PyObject* xy, int* x, int *y)
{
PyObject* value;
if (!PyTuple_Check(xy) || PyTuple_GET_SIZE(xy) != 2)
goto badarg;
value = PyTuple_GET_ITEM(xy, 0);
if (PyInt_Check(value))
*x = PyInt_AS_LONG(value);
else if (PyFloat_Check(value))
*x = (int) PyFloat_AS_DOUBLE(value);
else
goto badval;
value = PyTuple_GET_ITEM(xy, 1);
if (PyInt_Check(value))
*y = PyInt_AS_LONG(value);
else if (PyFloat_Check(value))
*y = (int) PyFloat_AS_DOUBLE(value);
else
goto badval;
return 0;
badarg:
PyErr_SetString(
PyExc_TypeError,
"argument must be sequence of length 2"
);
return -1;
badval:
PyErr_SetString(
PyExc_TypeError,
"an integer is required"
);
return -1;
}
static PyObject*
_getpixel(ImagingObject* self, PyObject* args)
{
PyObject* xy;
int x, y;
if (PyTuple_GET_SIZE(args) != 1) {
PyErr_SetString(
PyExc_TypeError,
"argument 1 must be sequence of length 2"
);
return NULL;
}
xy = PyTuple_GET_ITEM(args, 0);
if (_getxy(xy, &x, &y))
return NULL;
if (self->access == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return getpixel(self->image, self->access, x, y);
}
static PyObject*
_histogram(ImagingObject* self, PyObject* args)
{
ImagingHistogram h;
PyObject* list;
int i;
union {
UINT8 u[2];
INT32 i[2];
FLOAT32 f[2];
} extrema;
void* ep;
int i0, i1;
double f0, f1;
PyObject* extremap = NULL;
ImagingObject* maskp = NULL;
if (!PyArg_ParseTuple(args, "|OO!", &extremap, &Imaging_Type, &maskp))
return NULL;
if (extremap) {
ep = &extrema;
switch (self->image->type) {
case IMAGING_TYPE_UINT8:
if (!PyArg_ParseTuple(extremap, "ii", &i0, &i1))
return NULL;
/* FIXME: clip */
extrema.u[0] = i0;
extrema.u[1] = i1;
break;
case IMAGING_TYPE_INT32:
if (!PyArg_ParseTuple(extremap, "ii", &i0, &i1))
return NULL;
extrema.i[0] = i0;
extrema.i[1] = i1;
break;
case IMAGING_TYPE_FLOAT32:
if (!PyArg_ParseTuple(extremap, "dd", &f0, &f1))
return NULL;
extrema.f[0] = (FLOAT32) f0;
extrema.f[1] = (FLOAT32) f1;
break;
default:
ep = NULL;
break;
}
} else
ep = NULL;
h = ImagingGetHistogram(self->image, (maskp) ? maskp->image : NULL, ep);
if (!h)
return NULL;
/* Build an integer list containing the histogram */
list = PyList_New(h->bands * 256);
for (i = 0; i < h->bands * 256; i++) {
PyObject* item;
item = PyInt_FromLong(h->histogram[i]);
if (item == NULL) {
Py_DECREF(list);
list = NULL;
break;
}
PyList_SetItem(list, i, item);
}
ImagingHistogramDelete(h);
return list;
}
#ifdef WITH_MODEFILTER
static PyObject*
_modefilter(ImagingObject* self, PyObject* args)
{
int size;
if (!PyArg_ParseTuple(args, "i", &size))
return NULL;
return PyImagingNew(ImagingModeFilter(self->image, size));
}
#endif
static PyObject*
_offset(ImagingObject* self, PyObject* args)
{
int xoffset, yoffset;
if (!PyArg_ParseTuple(args, "ii", &xoffset, &yoffset))
return NULL;
return PyImagingNew(ImagingOffset(self->image, xoffset, yoffset));
}
static PyObject*
_paste(ImagingObject* self, PyObject* args)
{
int status;
char ink[4];
PyObject* source;
int x0, y0, x1, y1;
ImagingObject* maskp = NULL;
if (!PyArg_ParseTuple(args, "O(iiii)|O!",
&source,
&x0, &y0, &x1, &y1,
&Imaging_Type, &maskp))
return NULL;
if (PyImaging_Check(source))
status = ImagingPaste(
self->image, PyImaging_AsImaging(source),
(maskp) ? maskp->image : NULL,
x0, y0, x1, y1
);
else {
if (!getink(source, self->image, ink))
return NULL;
status = ImagingFill2(
self->image, ink,
(maskp) ? maskp->image : NULL,
x0, y0, x1, y1
);
}
if (status < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_point(ImagingObject* self, PyObject* args)
{
static const char* wrong_number = "wrong number of lut entries";
int n, i;
int bands;
Imaging im;
PyObject* list;
char* mode;
if (!PyArg_ParseTuple(args, "Oz", &list, &mode))
return NULL;
if (mode && !strcmp(mode, "F")) {
FLOAT32* data;
/* map from 8-bit data to floating point */
n = 256;
data = getlist(list, &n, wrong_number, TYPE_FLOAT32);
if (!data)
return NULL;
im = ImagingPoint(self->image, mode, (void*) data);
free(data);
} else if (!strcmp(self->image->mode, "I") && mode && !strcmp(mode, "L")) {
UINT8* data;
/* map from 16-bit subset of 32-bit data to 8-bit */
/* FIXME: support arbitrary number of entries (requires API change) */
n = 65536;
data = getlist(list, &n, wrong_number, TYPE_UINT8);
if (!data)
return NULL;
im = ImagingPoint(self->image, mode, (void*) data);
free(data);
} else {
INT32* data;
UINT8 lut[1024];
if (mode) {
bands = getbands(mode);
if (bands < 0)
return NULL;
} else
bands = self->image->bands;
/* map to integer data */
n = 256 * bands;
data = getlist(list, &n, wrong_number, TYPE_INT32);
if (!data)
return NULL;
if (mode && !strcmp(mode, "I"))
im = ImagingPoint(self->image, mode, (void*) data);
else if (mode && bands > 1) {
for (i = 0; i < 256; i++) {
lut[i*4] = CLIP(data[i]);
lut[i*4+1] = CLIP(data[i+256]);
lut[i*4+2] = CLIP(data[i+512]);
if (n > 768)
lut[i*4+3] = CLIP(data[i+768]);
}
im = ImagingPoint(self->image, mode, (void*) lut);
} else {
/* map individual bands */
for (i = 0; i < n; i++)
lut[i] = CLIP(data[i]);
im = ImagingPoint(self->image, mode, (void*) lut);
}
free(data);
}
return PyImagingNew(im);
}
static PyObject*
_point_transform(ImagingObject* self, PyObject* args)
{
double scale = 1.0;
double offset = 0.0;
if (!PyArg_ParseTuple(args, "|dd", &scale, &offset))
return NULL;
return PyImagingNew(ImagingPointTransform(self->image, scale, offset));
}
static PyObject*
_putdata(ImagingObject* self, PyObject* args)
{
Imaging image;
int n, i, x, y;
PyObject* data;
double scale = 1.0;
double offset = 0.0;
if (!PyArg_ParseTuple(args, "O|dd", &data, &scale, &offset))
return NULL;
if (!PySequence_Check(data)) {
PyErr_SetString(PyExc_TypeError, must_be_sequence);
return NULL;
}
image = self->image;
n = PyObject_Length(data);
if (n > (int) (image->xsize * image->ysize)) {
PyErr_SetString(PyExc_TypeError, "too many data entries");
return NULL;
}
if (image->image8) {
if (PyBytes_Check(data)) {
unsigned char* p;
p = (unsigned char*) PyBytes_AS_STRING(data);
if (scale == 1.0 && offset == 0.0)
/* Plain string data */
for (i = y = 0; i < n; i += image->xsize, y++) {
x = n - i;
if (x > (int) image->xsize)
x = image->xsize;
memcpy(image->image8[y], p+i, x);
}
else
/* Scaled and clipped string data */
for (i = x = y = 0; i < n; i++) {
image->image8[y][x] = CLIP((int) (p[i] * scale + offset));
if (++x >= (int) image->xsize)
x = 0, y++;
}
} else {
if (scale == 1.0 && offset == 0.0) {
/* Clipped data */
if (PyList_Check(data)) {
for (i = x = y = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(data, i);
image->image8[y][x] = (UINT8) CLIP(PyInt_AsLong(op));
if (++x >= (int) image->xsize)
x = 0, y++;
}
} else {
for (i = x = y = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(data, i);
image->image8[y][x] = (UINT8) CLIP(PyInt_AsLong(op));
Py_XDECREF(op);
if (++x >= (int) image->xsize)
x = 0, y++;
}
}
} else {
if (PyList_Check(data)) {
/* Scaled and clipped data */
for (i = x = y = 0; i < n; i++) {
PyObject *op = PyList_GET_ITEM(data, i);
image->image8[y][x] = CLIP(
(int) (PyFloat_AsDouble(op) * scale + offset));
if (++x >= (int) image->xsize)
x = 0, y++;
}
} else {
for (i = x = y = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(data, i);
image->image8[y][x] = CLIP(
(int) (PyFloat_AsDouble(op) * scale + offset));
Py_XDECREF(op);
if (++x >= (int) image->xsize)
x = 0, y++;
}
}
}
PyErr_Clear(); /* Avoid weird exceptions */
}
} else {
/* 32-bit images */
switch (image->type) {
case IMAGING_TYPE_INT32:
for (i = x = y = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(data, i);
IMAGING_PIXEL_INT32(image, x, y) =
(INT32) (PyFloat_AsDouble(op) * scale + offset);
Py_XDECREF(op);
if (++x >= (int) image->xsize)
x = 0, y++;
}
PyErr_Clear(); /* Avoid weird exceptions */
break;
case IMAGING_TYPE_FLOAT32:
for (i = x = y = 0; i < n; i++) {
PyObject *op = PySequence_GetItem(data, i);
IMAGING_PIXEL_FLOAT32(image, x, y) =
(FLOAT32) (PyFloat_AsDouble(op) * scale + offset);
Py_XDECREF(op);
if (++x >= (int) image->xsize)
x = 0, y++;
}
PyErr_Clear(); /* Avoid weird exceptions */
break;
default:
for (i = x = y = 0; i < n; i++) {
union {
char ink[4];
INT32 inkint;
} u;
PyObject *op = PySequence_GetItem(data, i);
if (!op || !getink(op, image, u.ink)) {
Py_DECREF(op);
return NULL;
}
/* FIXME: what about scale and offset? */
image->image32[y][x] = u.inkint;
Py_XDECREF(op);
if (++x >= (int) image->xsize)
x = 0, y++;
}
PyErr_Clear(); /* Avoid weird exceptions */
break;
}
}
Py_INCREF(Py_None);
return Py_None;
}
#ifdef WITH_QUANTIZE
static PyObject*
_quantize(ImagingObject* self, PyObject* args)
{
int colours = 256;
int method = 0;
int kmeans = 0;
if (!PyArg_ParseTuple(args, "|iii", &colours, &method, &kmeans))
return NULL;
if (!self->image->xsize || !self->image->ysize) {
/* no content; return an empty image */
return PyImagingNew(
ImagingNew("P", self->image->xsize, self->image->ysize)
);
}
return PyImagingNew(ImagingQuantize(self->image, colours, method, kmeans));
}
#endif
static PyObject*
_putpalette(ImagingObject* self, PyObject* args)
{
ImagingShuffler unpack;
int bits;
char* rawmode;
UINT8* palette;
int palettesize;
if (!PyArg_ParseTuple(args, "s"PY_ARG_BYTES_LENGTH, &rawmode, &palette, &palettesize))
return NULL;
if (strcmp(self->image->mode, "L") != 0 && strcmp(self->image->mode, "P")) {
PyErr_SetString(PyExc_ValueError, wrong_mode);
return NULL;
}
unpack = ImagingFindUnpacker("RGB", rawmode, &bits);
if (!unpack) {
PyErr_SetString(PyExc_ValueError, wrong_raw_mode);
return NULL;
}
ImagingPaletteDelete(self->image->palette);
strcpy(self->image->mode, "P");
self->image->palette = ImagingPaletteNew("RGB");
unpack(self->image->palette->palette, palette, palettesize * 8 / bits);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_putpalettealpha(ImagingObject* self, PyObject* args)
{
int index;
int alpha = 0;
if (!PyArg_ParseTuple(args, "i|i", &index, &alpha))
return NULL;
if (!self->image->palette) {
PyErr_SetString(PyExc_ValueError, no_palette);
return NULL;
}
if (index < 0 || index >= 256) {
PyErr_SetString(PyExc_ValueError, outside_palette);
return NULL;
}
strcpy(self->image->palette->mode, "RGBA");
self->image->palette->palette[index*4+3] = (UINT8) alpha;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_putpalettealphas(ImagingObject* self, PyObject* args)
{
int i;
UINT8 *values;
int length;
if (!PyArg_ParseTuple(args, "s#", &values, &length))
return NULL;
if (!self->image->palette) {
PyErr_SetString(PyExc_ValueError, no_palette);
return NULL;
}
if (length > 256) {
PyErr_SetString(PyExc_ValueError, outside_palette);
return NULL;
}
strcpy(self->image->palette->mode, "RGBA");
for (i=0; i<length; i++) {
self->image->palette->palette[i*4+3] = (UINT8) values[i];
}
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_putpixel(ImagingObject* self, PyObject* args)
{
Imaging im;
char ink[4];
int x, y;
PyObject* color;
if (!PyArg_ParseTuple(args, "(ii)O", &x, &y, &color))
return NULL;
im = self->image;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize) {
PyErr_SetString(PyExc_IndexError, outside_image);
return NULL;
}
if (!getink(color, im, ink))
return NULL;
if (self->access)
self->access->put_pixel(im, x, y, ink);
Py_INCREF(Py_None);
return Py_None;
}
#ifdef WITH_RANKFILTER
static PyObject*
_rankfilter(ImagingObject* self, PyObject* args)
{
int size, rank;
if (!PyArg_ParseTuple(args, "ii", &size, &rank))
return NULL;
return PyImagingNew(ImagingRankFilter(self->image, size, rank));
}
#endif
static PyObject*
_resize(ImagingObject* self, PyObject* args)
{
Imaging imIn;
Imaging imOut;
int xsize, ysize;
int filter = IMAGING_TRANSFORM_NEAREST;
if (!PyArg_ParseTuple(args, "(ii)|i", &xsize, &ysize, &filter))
return NULL;
imIn = self->image;
imOut = ImagingNew(imIn->mode, xsize, ysize);
if (imOut)
(void) ImagingResize(imOut, imIn, filter);
return PyImagingNew(imOut);
}
static PyObject*
_rotate(ImagingObject* self, PyObject* args)
{
Imaging imOut;
Imaging imIn;
double theta;
int filter = IMAGING_TRANSFORM_NEAREST;
if (!PyArg_ParseTuple(args, "d|i", &theta, &filter))
return NULL;
imIn = self->image;
theta = fmod(theta, 360.0);
if (theta < 0.0)
theta += 360;
if (filter && imIn->type != IMAGING_TYPE_SPECIAL) {
/* Rotate with resampling filter */
imOut = ImagingNew(imIn->mode, imIn->xsize, imIn->ysize);
(void) ImagingRotate(imOut, imIn, theta, filter);
} else if (theta == 90.0 || theta == 270.0) {
/* Use fast version */
imOut = ImagingNew(imIn->mode, imIn->ysize, imIn->xsize);
if (imOut) {
if (theta == 90.0)
(void) ImagingRotate90(imOut, imIn);
else
(void) ImagingRotate270(imOut, imIn);
}
} else {
imOut = ImagingNew(imIn->mode, imIn->xsize, imIn->ysize);
if (imOut) {
if (theta == 0.0)
/* No rotation: simply copy the input image */
(void) ImagingCopy2(imOut, imIn);
else if (theta == 180.0)
/* Use fast version */
(void) ImagingRotate180(imOut, imIn);
else
/* Use ordinary version */
(void) ImagingRotate(imOut, imIn, theta, 0);
}
}
return PyImagingNew(imOut);
}
#define IS_RGB(mode)\
(!strcmp(mode, "RGB") || !strcmp(mode, "RGBA") || !strcmp(mode, "RGBX"))
static PyObject*
im_setmode(ImagingObject* self, PyObject* args)
{
/* attempt to modify the mode of an image in place */
Imaging im;
char* mode;
int modelen;
if (!PyArg_ParseTuple(args, "s#:setmode", &mode, &modelen))
return NULL;
im = self->image;
/* move all logic in here to the libImaging primitive */
if (!strcmp(im->mode, mode)) {
; /* same mode; always succeeds */
} else if (IS_RGB(im->mode) && IS_RGB(mode)) {
/* color to color */
strcpy(im->mode, mode);
im->bands = modelen;
if (!strcmp(mode, "RGBA"))
(void) ImagingFillBand(im, 3, 255);
} else {
/* trying doing an in-place conversion */
if (!ImagingConvertInPlace(im, mode))
return NULL;
}
if (self->access)
ImagingAccessDelete(im, self->access);
self->access = ImagingAccessNew(im);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_stretch(ImagingObject* self, PyObject* args)
{
Imaging imIn;
Imaging imTemp;
Imaging imOut;
int xsize, ysize;
int filter = IMAGING_TRANSFORM_NEAREST;
if (!PyArg_ParseTuple(args, "(ii)|i", &xsize, &ysize, &filter))
return NULL;
imIn = self->image;
/* two-pass resize: minimize size of intermediate image */
if (imIn->xsize * ysize < xsize * imIn->ysize)
imTemp = ImagingNew(imIn->mode, imIn->xsize, ysize);
else
imTemp = ImagingNew(imIn->mode, xsize, imIn->ysize);
if (!imTemp)
return NULL;
/* first pass */
if (!ImagingStretch(imTemp, imIn, filter)) {
ImagingDelete(imTemp);
return NULL;
}
imOut = ImagingNew(imIn->mode, xsize, ysize);
if (!imOut) {
ImagingDelete(imTemp);
return NULL;
}
/* second pass */
if (!ImagingStretch(imOut, imTemp, filter)) {
ImagingDelete(imOut);
ImagingDelete(imTemp);
return NULL;
}
ImagingDelete(imTemp);
return PyImagingNew(imOut);
}
static PyObject*
_transform2(ImagingObject* self, PyObject* args)
{
static const char* wrong_number = "wrong number of matrix entries";
Imaging imIn;
Imaging imOut;
int n;
double *a;
ImagingObject* imagep;
int x0, y0, x1, y1;
int method;
PyObject* data;
int filter = IMAGING_TRANSFORM_NEAREST;
int fill = 1;
if (!PyArg_ParseTuple(args, "(iiii)O!iO|ii",
&x0, &y0, &x1, &y1,
&Imaging_Type, &imagep,
&method, &data,
&filter, &fill))
return NULL;
switch (method) {
case IMAGING_TRANSFORM_AFFINE:
n = 6;
break;
case IMAGING_TRANSFORM_PERSPECTIVE:
n = 8;
break;
case IMAGING_TRANSFORM_QUAD:
n = 8;
break;
default:
n = -1; /* force error */
}
a = getlist(data, &n, wrong_number, TYPE_DOUBLE);
if (!a)
return NULL;
imOut = self->image;
imIn = imagep->image;
/* FIXME: move transform dispatcher into libImaging */
switch (method) {
case IMAGING_TRANSFORM_AFFINE:
imOut = ImagingTransformAffine(
imOut, imIn, x0, y0, x1, y1, a, filter, 1
);
break;
case IMAGING_TRANSFORM_PERSPECTIVE:
imOut = ImagingTransformPerspective(
imOut, imIn, x0, y0, x1, y1, a, filter, 1
);
break;
case IMAGING_TRANSFORM_QUAD:
imOut = ImagingTransformQuad(
imOut, imIn, x0, y0, x1, y1, a, filter, 1
);
break;
default:
(void) ImagingError_ValueError("bad transform method");
}
free(a);
if (!imOut)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_transpose(ImagingObject* self, PyObject* args)
{
Imaging imIn;
Imaging imOut;
int op;
if (!PyArg_ParseTuple(args, "i", &op))
return NULL;
imIn = self->image;
switch (op) {
case 0: /* flip left right */
case 1: /* flip top bottom */
case 3: /* rotate 180 */
imOut = ImagingNew(imIn->mode, imIn->xsize, imIn->ysize);
break;
case 2: /* rotate 90 */
case 4: /* rotate 270 */
imOut = ImagingNew(imIn->mode, imIn->ysize, imIn->xsize);
break;
default:
PyErr_SetString(PyExc_ValueError, "No such transpose operation");
return NULL;
}
if (imOut)
switch (op) {
case 0:
(void) ImagingFlipLeftRight(imOut, imIn);
break;
case 1:
(void) ImagingFlipTopBottom(imOut, imIn);
break;
case 2:
(void) ImagingRotate90(imOut, imIn);
break;
case 3:
(void) ImagingRotate180(imOut, imIn);
break;
case 4:
(void) ImagingRotate270(imOut, imIn);
break;
}
return PyImagingNew(imOut);
}
#ifdef WITH_UNSHARPMASK
static PyObject*
_unsharp_mask(ImagingObject* self, PyObject* args)
{
Imaging imIn;
Imaging imOut;
float radius;
int percent, threshold;
if (!PyArg_ParseTuple(args, "fii", &radius, &percent, &threshold))
return NULL;
imIn = self->image;
imOut = ImagingNew(imIn->mode, imIn->xsize, imIn->ysize);
if (!imOut)
return NULL;
if (!ImagingUnsharpMask(imIn, imOut, radius, percent, threshold))
return NULL;
return PyImagingNew(imOut);
}
#endif
/* -------------------------------------------------------------------- */
static PyObject*
_isblock(ImagingObject* self, PyObject* args)
{
return PyInt_FromLong((long) self->image->block);
}
static PyObject*
_getbbox(ImagingObject* self, PyObject* args)
{
int bbox[4];
if (!ImagingGetBBox(self->image, bbox)) {
Py_INCREF(Py_None);
return Py_None;
}
return Py_BuildValue("iiii", bbox[0], bbox[1], bbox[2], bbox[3]);
}
static PyObject*
_getcolors(ImagingObject* self, PyObject* args)
{
ImagingColorItem* items;
int i, colors;
PyObject* out;
int maxcolors = 256;
if (!PyArg_ParseTuple(args, "i:getcolors", &maxcolors))
return NULL;
items = ImagingGetColors(self->image, maxcolors, &colors);
if (!items)
return NULL;
if (colors > maxcolors) {
out = Py_None;
Py_INCREF(out);
} else {
out = PyList_New(colors);
for (i = 0; i < colors; i++) {
ImagingColorItem* v = &items[i];
PyObject* item = Py_BuildValue(
"iN", v->count, getpixel(self->image, self->access, v->x, v->y)
);
PyList_SetItem(out, i, item);
}
}
free(items);
return out;
}
static PyObject*
_getextrema(ImagingObject* self, PyObject* args)
{
union {
UINT8 u[2];
INT32 i[2];
FLOAT32 f[2];
} extrema;
int status;
status = ImagingGetExtrema(self->image, &extrema);
if (status < 0)
return NULL;
if (status)
switch (self->image->type) {
case IMAGING_TYPE_UINT8:
return Py_BuildValue("BB", extrema.u[0], extrema.u[1]);
case IMAGING_TYPE_INT32:
return Py_BuildValue("ii", extrema.i[0], extrema.i[1]);
case IMAGING_TYPE_FLOAT32:
return Py_BuildValue("dd", extrema.f[0], extrema.f[1]);
}
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_getprojection(ImagingObject* self, PyObject* args)
{
unsigned char* xprofile;
unsigned char* yprofile;
PyObject* result;
xprofile = malloc(self->image->xsize);
yprofile = malloc(self->image->ysize);
if (xprofile == NULL || yprofile == NULL) {
free(xprofile);
free(yprofile);
return PyErr_NoMemory();
}
ImagingGetProjection(self->image, (unsigned char *)xprofile, (unsigned char *)yprofile);
result = Py_BuildValue(PY_ARG_BYTES_LENGTH PY_ARG_BYTES_LENGTH,
xprofile, self->image->xsize,
yprofile, self->image->ysize);
free(xprofile);
free(yprofile);
return result;
}
/* -------------------------------------------------------------------- */
static PyObject*
_getband(ImagingObject* self, PyObject* args)
{
int band;
if (!PyArg_ParseTuple(args, "i", &band))
return NULL;
return PyImagingNew(ImagingGetBand(self->image, band));
}
static PyObject*
_fillband(ImagingObject* self, PyObject* args)
{
int band;
int color;
if (!PyArg_ParseTuple(args, "ii", &band, &color))
return NULL;
if (!ImagingFillBand(self->image, band, color))
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_putband(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
int band;
if (!PyArg_ParseTuple(args, "O!i",
&Imaging_Type, &imagep,
&band))
return NULL;
if (!ImagingPutBand(self->image, imagep->image, band))
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
/* -------------------------------------------------------------------- */
#ifdef WITH_IMAGECHOPS
static PyObject*
_chop_invert(ImagingObject* self, PyObject* args)
{
return PyImagingNew(ImagingNegative(self->image));
}
static PyObject*
_chop_lighter(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopLighter(self->image, imagep->image));
}
static PyObject*
_chop_darker(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopDarker(self->image, imagep->image));
}
static PyObject*
_chop_difference(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopDifference(self->image, imagep->image));
}
static PyObject*
_chop_multiply(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopMultiply(self->image, imagep->image));
}
static PyObject*
_chop_screen(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopScreen(self->image, imagep->image));
}
static PyObject*
_chop_add(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
float scale;
int offset;
scale = 1.0;
offset = 0;
if (!PyArg_ParseTuple(args, "O!|fi", &Imaging_Type, &imagep,
&scale, &offset))
return NULL;
return PyImagingNew(ImagingChopAdd(self->image, imagep->image,
scale, offset));
}
static PyObject*
_chop_subtract(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
float scale;
int offset;
scale = 1.0;
offset = 0;
if (!PyArg_ParseTuple(args, "O!|fi", &Imaging_Type, &imagep,
&scale, &offset))
return NULL;
return PyImagingNew(ImagingChopSubtract(self->image, imagep->image,
scale, offset));
}
static PyObject*
_chop_and(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopAnd(self->image, imagep->image));
}
static PyObject*
_chop_or(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopOr(self->image, imagep->image));
}
static PyObject*
_chop_xor(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopXor(self->image, imagep->image));
}
static PyObject*
_chop_add_modulo(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopAddModulo(self->image, imagep->image));
}
static PyObject*
_chop_subtract_modulo(ImagingObject* self, PyObject* args)
{
ImagingObject* imagep;
if (!PyArg_ParseTuple(args, "O!", &Imaging_Type, &imagep))
return NULL;
return PyImagingNew(ImagingChopSubtractModulo(self->image, imagep->image));
}
#endif
/* -------------------------------------------------------------------- */
#ifdef WITH_IMAGEDRAW
static PyObject*
_font_new(PyObject* self_, PyObject* args)
{
ImagingFontObject *self;
int i, y0, y1;
static const char* wrong_length = "descriptor table has wrong size";
ImagingObject* imagep;
unsigned char* glyphdata;
int glyphdata_length;
if (!PyArg_ParseTuple(args, "O!"PY_ARG_BYTES_LENGTH,
&Imaging_Type, &imagep,
&glyphdata, &glyphdata_length))
return NULL;
if (glyphdata_length != 256 * 20) {
PyErr_SetString(PyExc_ValueError, wrong_length);
return NULL;
}
self = PyObject_New(ImagingFontObject, &ImagingFont_Type);
if (self == NULL)
return NULL;
/* glyph bitmap */
self->bitmap = imagep->image;
y0 = y1 = 0;
/* glyph glyphs */
for (i = 0; i < 256; i++) {
self->glyphs[i].dx = S16(B16(glyphdata, 0));
self->glyphs[i].dy = S16(B16(glyphdata, 2));
self->glyphs[i].dx0 = S16(B16(glyphdata, 4));
self->glyphs[i].dy0 = S16(B16(glyphdata, 6));
self->glyphs[i].dx1 = S16(B16(glyphdata, 8));
self->glyphs[i].dy1 = S16(B16(glyphdata, 10));
self->glyphs[i].sx0 = S16(B16(glyphdata, 12));
self->glyphs[i].sy0 = S16(B16(glyphdata, 14));
self->glyphs[i].sx1 = S16(B16(glyphdata, 16));
self->glyphs[i].sy1 = S16(B16(glyphdata, 18));
if (self->glyphs[i].dy0 < y0)
y0 = self->glyphs[i].dy0;
if (self->glyphs[i].dy1 > y1)
y1 = self->glyphs[i].dy1;
glyphdata += 20;
}
self->baseline = -y0;
self->ysize = y1 - y0;
/* keep a reference to the bitmap object */
Py_INCREF(imagep);
self->ref = imagep;
return (PyObject*) self;
}
static void
_font_dealloc(ImagingFontObject* self)
{
Py_XDECREF(self->ref);
PyObject_Del(self);
}
static inline int
textwidth(ImagingFontObject* self, const unsigned char* text)
{
int xsize;
for (xsize = 0; *text; text++)
xsize += self->glyphs[*text].dx;
return xsize;
}
static PyObject*
_font_getmask(ImagingFontObject* self, PyObject* args)
{
Imaging im;
Imaging bitmap;
int x, b;
int status;
Glyph* glyph;
unsigned char* text;
char* mode = "";
if (!PyArg_ParseTuple(args, "s|s:getmask", &text, &mode))
return NULL;
im = ImagingNew(self->bitmap->mode, textwidth(self, text), self->ysize);
if (!im)
return NULL;
b = 0;
(void) ImagingFill(im, &b);
b = self->baseline;
for (x = 0; *text; text++) {
glyph = &self->glyphs[*text];
bitmap = ImagingCrop(
self->bitmap,
glyph->sx0, glyph->sy0, glyph->sx1, glyph->sy1
);
if (!bitmap)
goto failed;
status = ImagingPaste(
im, bitmap, NULL,
glyph->dx0+x, glyph->dy0+b, glyph->dx1+x, glyph->dy1+b
);
ImagingDelete(bitmap);
if (status < 0)
goto failed;
x = x + glyph->dx;
b = b + glyph->dy;
}
return PyImagingNew(im);
failed:
ImagingDelete(im);
return NULL;
}
static PyObject*
_font_getsize(ImagingFontObject* self, PyObject* args)
{
unsigned char* text;
if (!PyArg_ParseTuple(args, "s:getsize", &text))
return NULL;
return Py_BuildValue("ii", textwidth(self, text), self->ysize);
}
static struct PyMethodDef _font_methods[] = {
{"getmask", (PyCFunction)_font_getmask, 1},
{"getsize", (PyCFunction)_font_getsize, 1},
{NULL, NULL} /* sentinel */
};
/* -------------------------------------------------------------------- */
static PyObject*
_draw_new(PyObject* self_, PyObject* args)
{
ImagingDrawObject *self;
ImagingObject* imagep;
int blend = 0;
if (!PyArg_ParseTuple(args, "O!|i", &Imaging_Type, &imagep, &blend))
return NULL;
self = PyObject_New(ImagingDrawObject, &ImagingDraw_Type);
if (self == NULL)
return NULL;
/* keep a reference to the image object */
Py_INCREF(imagep);
self->image = imagep;
self->ink[0] = self->ink[1] = self->ink[2] = self->ink[3] = 0;
self->blend = blend;
return (PyObject*) self;
}
static void
_draw_dealloc(ImagingDrawObject* self)
{
Py_XDECREF(self->image);
PyObject_Del(self);
}
extern int PyPath_Flatten(PyObject* data, double **xy);
static PyObject*
_draw_ink(ImagingDrawObject* self, PyObject* args)
{
INT32 ink = 0;
PyObject* color;
char* mode = NULL; /* not used in this release */
if (!PyArg_ParseTuple(args, "O|s", &color, &mode))
return NULL;
if (!getink(color, self->image->image, (char*) &ink))
return NULL;
return PyInt_FromLong((int) ink);
}
static PyObject*
_draw_arc(ImagingDrawObject* self, PyObject* args)
{
int x0, y0, x1, y1;
int ink;
int start, end;
int op = 0;
if (!PyArg_ParseTuple(args, "(iiii)iii|i",
&x0, &y0, &x1, &y1,
&start, &end, &ink))
return NULL;
if (ImagingDrawArc(self->image->image, x0, y0, x1, y1, start, end,
&ink, op) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_bitmap(ImagingDrawObject* self, PyObject* args)
{
double *xy;
int n;
PyObject *data;
ImagingObject* bitmap;
int ink;
if (!PyArg_ParseTuple(args, "OO!i", &data, &Imaging_Type, &bitmap, &ink))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
if (n != 1) {
PyErr_SetString(
PyExc_TypeError,
"coordinate list must contain exactly 1 coordinate"
);
return NULL;
}
n = ImagingDrawBitmap(
self->image->image, (int) xy[0], (int) xy[1], bitmap->image,
&ink, self->blend
);
free(xy);
if (n < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_chord(ImagingDrawObject* self, PyObject* args)
{
int x0, y0, x1, y1;
int ink, fill;
int start, end;
if (!PyArg_ParseTuple(args, "(iiii)iiii",
&x0, &y0, &x1, &y1, &start, &end, &ink, &fill))
return NULL;
if (ImagingDrawChord(self->image->image, x0, y0, x1, y1,
start, end, &ink, fill, self->blend) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_ellipse(ImagingDrawObject* self, PyObject* args)
{
double* xy;
int n;
PyObject* data;
int ink;
int fill = 0;
if (!PyArg_ParseTuple(args, "Oi|i", &data, &ink, &fill))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
if (n != 2) {
PyErr_SetString(
PyExc_TypeError,
"coordinate list must contain exactly 2 coordinates"
);
return NULL;
}
n = ImagingDrawEllipse(
self->image->image, (int) xy[0], (int) xy[1], (int) xy[2], (int) xy[3],
&ink, fill, self->blend
);
free(xy);
if (n < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_line(ImagingDrawObject* self, PyObject* args)
{
int x0, y0, x1, y1;
int ink;
if (!PyArg_ParseTuple(args, "(ii)(ii)i", &x0, &y0, &x1, &y1, &ink))
return NULL;
if (ImagingDrawLine(self->image->image, x0, y0, x1, y1,
&ink, self->blend) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_lines(ImagingDrawObject* self, PyObject* args)
{
double *xy;
int i, n;
PyObject *data;
int ink;
int width = 0;
if (!PyArg_ParseTuple(args, "Oi|i", &data, &ink, &width))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
if (width <= 1) {
double *p = NULL;
for (i = 0; i < n-1; i++) {
p = &xy[i+i];
if (ImagingDrawLine(
self->image->image,
(int) p[0], (int) p[1], (int) p[2], (int) p[3],
&ink, self->blend) < 0) {
free(xy);
return NULL;
}
}
if (p) /* draw last point */
ImagingDrawPoint(
self->image->image,
(int) p[2], (int) p[3],
&ink, self->blend
);
} else {
for (i = 0; i < n-1; i++) {
double *p = &xy[i+i];
if (ImagingDrawWideLine(
self->image->image,
(int) p[0], (int) p[1], (int) p[2], (int) p[3],
&ink, width, self->blend) < 0) {
free(xy);
return NULL;
}
}
}
free(xy);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_point(ImagingDrawObject* self, PyObject* args)
{
int x, y;
int ink;
if (!PyArg_ParseTuple(args, "(ii)i", &x, &y, &ink))
return NULL;
if (ImagingDrawPoint(self->image->image, x, y, &ink, self->blend) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_points(ImagingDrawObject* self, PyObject* args)
{
double *xy;
int i, n;
PyObject *data;
int ink;
if (!PyArg_ParseTuple(args, "Oi", &data, &ink))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
for (i = 0; i < n; i++) {
double *p = &xy[i+i];
if (ImagingDrawPoint(self->image->image, (int) p[0], (int) p[1],
&ink, self->blend) < 0) {
free(xy);
return NULL;
}
}
free(xy);
Py_INCREF(Py_None);
return Py_None;
}
#ifdef WITH_ARROW
/* from outline.c */
extern ImagingOutline PyOutline_AsOutline(PyObject* outline);
static PyObject*
_draw_outline(ImagingDrawObject* self, PyObject* args)
{
ImagingOutline outline;
PyObject* outline_;
int ink;
int fill = 0;
if (!PyArg_ParseTuple(args, "Oi|i", &outline_, &ink, &fill))
return NULL;
outline = PyOutline_AsOutline(outline_);
if (!outline) {
PyErr_SetString(PyExc_TypeError, "expected outline object");
return NULL;
}
if (ImagingDrawOutline(self->image->image, outline,
&ink, fill, self->blend) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
#endif
static PyObject*
_draw_pieslice(ImagingDrawObject* self, PyObject* args)
{
int x0, y0, x1, y1;
int ink, fill;
int start, end;
if (!PyArg_ParseTuple(args, "(iiii)iiii",
&x0, &y0, &x1, &y1, &start, &end, &ink, &fill))
return NULL;
if (ImagingDrawPieslice(self->image->image, x0, y0, x1, y1,
start, end, &ink, fill, self->blend) < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_polygon(ImagingDrawObject* self, PyObject* args)
{
double *xy;
int *ixy;
int n, i;
PyObject* data;
int ink;
int fill = 0;
if (!PyArg_ParseTuple(args, "Oi|i", &data, &ink, &fill))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
if (n < 2) {
PyErr_SetString(
PyExc_TypeError,
"coordinate list must contain at least 2 coordinates"
);
return NULL;
}
/* Copy list of vertices to array */
ixy = (int*) malloc(n * 2 * sizeof(int));
for (i = 0; i < n; i++) {
ixy[i+i] = (int) xy[i+i];
ixy[i+i+1] = (int) xy[i+i+1];
}
free(xy);
if (ImagingDrawPolygon(self->image->image, n, ixy,
&ink, fill, self->blend) < 0) {
free(ixy);
return NULL;
}
free(ixy);
Py_INCREF(Py_None);
return Py_None;
}
static PyObject*
_draw_rectangle(ImagingDrawObject* self, PyObject* args)
{
double* xy;
int n;
PyObject* data;
int ink;
int fill = 0;
if (!PyArg_ParseTuple(args, "Oi|i", &data, &ink, &fill))
return NULL;
n = PyPath_Flatten(data, &xy);
if (n < 0)
return NULL;
if (n != 2) {
PyErr_SetString(
PyExc_TypeError,
"coordinate list must contain exactly 2 coordinates"
);
return NULL;
}
n = ImagingDrawRectangle(
self->image->image, (int) xy[0], (int) xy[1],
(int) xy[2], (int) xy[3], &ink, fill, self->blend
);
free(xy);
if (n < 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static struct PyMethodDef _draw_methods[] = {
#ifdef WITH_IMAGEDRAW
/* Graphics (ImageDraw) */
{"draw_line", (PyCFunction)_draw_line, 1},
{"draw_lines", (PyCFunction)_draw_lines, 1},
#ifdef WITH_ARROW
{"draw_outline", (PyCFunction)_draw_outline, 1},
#endif
{"draw_polygon", (PyCFunction)_draw_polygon, 1},
{"draw_rectangle", (PyCFunction)_draw_rectangle, 1},
{"draw_point", (PyCFunction)_draw_point, 1},
{"draw_points", (PyCFunction)_draw_points, 1},
{"draw_arc", (PyCFunction)_draw_arc, 1},
{"draw_bitmap", (PyCFunction)_draw_bitmap, 1},
{"draw_chord", (PyCFunction)_draw_chord, 1},
{"draw_ellipse", (PyCFunction)_draw_ellipse, 1},
{"draw_pieslice", (PyCFunction)_draw_pieslice, 1},
{"draw_ink", (PyCFunction)_draw_ink, 1},
#endif
{NULL, NULL} /* sentinel */
};
#endif
static PyObject*
pixel_access_new(ImagingObject* imagep, PyObject* args)
{
PixelAccessObject *self;
int readonly = 0;
if (!PyArg_ParseTuple(args, "|i", &readonly))
return NULL;
self = PyObject_New(PixelAccessObject, &PixelAccess_Type);
if (self == NULL)
return NULL;
/* keep a reference to the image object */
Py_INCREF(imagep);
self->image = imagep;
self->readonly = readonly;
return (PyObject*) self;
}
static void
pixel_access_dealloc(PixelAccessObject* self)
{
Py_XDECREF(self->image);
PyObject_Del(self);
}
static PyObject *
pixel_access_getitem(PixelAccessObject *self, PyObject *xy)
{
int x, y;
if (_getxy(xy, &x, &y))
return NULL;
return getpixel(self->image->image, self->image->access, x, y);
}
static int
pixel_access_setitem(PixelAccessObject *self, PyObject *xy, PyObject *color)
{
Imaging im = self->image->image;
char ink[4];
int x, y;
if (self->readonly) {
(void) ImagingError_ValueError(readonly);
return -1;
}
if (_getxy(xy, &x, &y))
return -1;
if (x < 0 || x >= im->xsize || y < 0 || y >= im->ysize) {
PyErr_SetString(PyExc_IndexError, outside_image);
return -1;
}
if (!color) /* FIXME: raise exception? */
return 0;
if (!getink(color, im, ink))
return -1;
self->image->access->put_pixel(im, x, y, ink);
return 0;
}
/* -------------------------------------------------------------------- */
/* EFFECTS (experimental) */
/* -------------------------------------------------------------------- */
#ifdef WITH_EFFECTS
static PyObject*
_effect_mandelbrot(ImagingObject* self, PyObject* args)
{
int xsize = 512;
int ysize = 512;
double extent[4];
int quality = 100;
extent[0] = -3; extent[1] = -2.5;
extent[2] = 2; extent[3] = 2.5;
if (!PyArg_ParseTuple(args, "|(ii)(dddd)i", &xsize, &ysize,
&extent[0], &extent[1], &extent[2], &extent[3],
&quality))
return NULL;
return PyImagingNew(ImagingEffectMandelbrot(xsize, ysize, extent, quality));
}
static PyObject*
_effect_noise(ImagingObject* self, PyObject* args)
{
int xsize, ysize;
float sigma = 128;
if (!PyArg_ParseTuple(args, "(ii)|f", &xsize, &ysize, &sigma))
return NULL;
return PyImagingNew(ImagingEffectNoise(xsize, ysize, sigma));
}
static PyObject*
_effect_spread(ImagingObject* self, PyObject* args)
{
int dist;
if (!PyArg_ParseTuple(args, "i", &dist))
return NULL;
return PyImagingNew(ImagingEffectSpread(self->image, dist));
}
#endif
/* -------------------------------------------------------------------- */
/* UTILITIES */
/* -------------------------------------------------------------------- */
static PyObject*
_crc32(PyObject* self, PyObject* args)
{
unsigned char* buffer;
int bytes;
int hi, lo;
UINT32 crc;
hi = lo = 0;
if (!PyArg_ParseTuple(args, PY_ARG_BYTES_LENGTH"|(ii)",
&buffer, &bytes, &hi, &lo))
return NULL;
crc = ((UINT32) (hi & 0xFFFF) << 16) + (lo & 0xFFFF);
crc = ImagingCRC32(crc, (unsigned char *)buffer, bytes);
return Py_BuildValue("ii", (crc >> 16) & 0xFFFF, crc & 0xFFFF);
}
static PyObject*
_getcodecstatus(PyObject* self, PyObject* args)
{
int status;
char* msg;
if (!PyArg_ParseTuple(args, "i", &status))
return NULL;
switch (status) {
case IMAGING_CODEC_OVERRUN:
msg = "buffer overrun"; break;
case IMAGING_CODEC_BROKEN:
msg = "broken data stream"; break;
case IMAGING_CODEC_UNKNOWN:
msg = "unrecognized data stream contents"; break;
case IMAGING_CODEC_CONFIG:
msg = "codec configuration error"; break;
case IMAGING_CODEC_MEMORY:
msg = "out of memory"; break;
default:
Py_RETURN_NONE;
}
return PyUnicode_FromString(msg);
}
/* -------------------------------------------------------------------- */
/* DEBUGGING HELPERS */
/* -------------------------------------------------------------------- */
#ifdef WITH_DEBUG
static PyObject*
_save_ppm(ImagingObject* self, PyObject* args)
{
char* filename;
if (!PyArg_ParseTuple(args, "s", &filename))
return NULL;
if (!ImagingSavePPM(self->image, filename))
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
#endif
/* -------------------------------------------------------------------- */
/* methods */
static struct PyMethodDef methods[] = {
/* Put commonly used methods first */
{"getpixel", (PyCFunction)_getpixel, 1},
{"putpixel", (PyCFunction)_putpixel, 1},
{"pixel_access", (PyCFunction)pixel_access_new, 1},
/* Standard processing methods (Image) */
{"convert", (PyCFunction)_convert, 1},
{"convert2", (PyCFunction)_convert2, 1},
{"convert_matrix", (PyCFunction)_convert_matrix, 1},
{"copy", (PyCFunction)_copy, 1},
{"copy2", (PyCFunction)_copy2, 1},
#ifdef WITH_CRACKCODE
{"crackcode", (PyCFunction)_crackcode, 1},
#endif
{"crop", (PyCFunction)_crop, 1},
{"expand", (PyCFunction)_expand, 1},
{"filter", (PyCFunction)_filter, 1},
{"histogram", (PyCFunction)_histogram, 1},
#ifdef WITH_MODEFILTER
{"modefilter", (PyCFunction)_modefilter, 1},
#endif
{"offset", (PyCFunction)_offset, 1},
{"paste", (PyCFunction)_paste, 1},
{"point", (PyCFunction)_point, 1},
{"point_transform", (PyCFunction)_point_transform, 1},
{"putdata", (PyCFunction)_putdata, 1},
#ifdef WITH_QUANTIZE
{"quantize", (PyCFunction)_quantize, 1},
#endif
#ifdef WITH_RANKFILTER
{"rankfilter", (PyCFunction)_rankfilter, 1},
#endif
{"resize", (PyCFunction)_resize, 1},
{"rotate", (PyCFunction)_rotate, 1},
{"stretch", (PyCFunction)_stretch, 1},
{"transpose", (PyCFunction)_transpose, 1},
{"transform2", (PyCFunction)_transform2, 1},
{"isblock", (PyCFunction)_isblock, 1},
{"getbbox", (PyCFunction)_getbbox, 1},
{"getcolors", (PyCFunction)_getcolors, 1},
{"getextrema", (PyCFunction)_getextrema, 1},
{"getprojection", (PyCFunction)_getprojection, 1},
{"getband", (PyCFunction)_getband, 1},
{"putband", (PyCFunction)_putband, 1},
{"fillband", (PyCFunction)_fillband, 1},
{"setmode", (PyCFunction)im_setmode, 1},
{"getpalette", (PyCFunction)_getpalette, 1},
{"getpalettemode", (PyCFunction)_getpalettemode, 1},
{"putpalette", (PyCFunction)_putpalette, 1},
{"putpalettealpha", (PyCFunction)_putpalettealpha, 1},
{"putpalettealphas", (PyCFunction)_putpalettealphas, 1},
#ifdef WITH_IMAGECHOPS
/* Channel operations (ImageChops) */
{"chop_invert", (PyCFunction)_chop_invert, 1},
{"chop_lighter", (PyCFunction)_chop_lighter, 1},
{"chop_darker", (PyCFunction)_chop_darker, 1},
{"chop_difference", (PyCFunction)_chop_difference, 1},
{"chop_multiply", (PyCFunction)_chop_multiply, 1},
{"chop_screen", (PyCFunction)_chop_screen, 1},
{"chop_add", (PyCFunction)_chop_add, 1},
{"chop_subtract", (PyCFunction)_chop_subtract, 1},
{"chop_add_modulo", (PyCFunction)_chop_add_modulo, 1},
{"chop_subtract_modulo", (PyCFunction)_chop_subtract_modulo, 1},
{"chop_and", (PyCFunction)_chop_and, 1},
{"chop_or", (PyCFunction)_chop_or, 1},
{"chop_xor", (PyCFunction)_chop_xor, 1},
#endif
#ifdef WITH_UNSHARPMASK
/* Kevin Cazabon's unsharpmask extension */
{"gaussian_blur", (PyCFunction)_gaussian_blur, 1},
{"unsharp_mask", (PyCFunction)_unsharp_mask, 1},
#endif
#ifdef WITH_EFFECTS
/* Special effects */
{"effect_spread", (PyCFunction)_effect_spread, 1},
#endif
/* Misc. */
{"new_array", (PyCFunction)_new_array, 1},
{"new_block", (PyCFunction)_new_block, 1},
#ifdef WITH_DEBUG
{"save_ppm", (PyCFunction)_save_ppm, 1},
#endif
{NULL, NULL} /* sentinel */
};
/* attributes */
static PyObject*
_getattr_mode(ImagingObject* self, void* closure)
{
return PyUnicode_FromString(self->image->mode);
}
static PyObject*
_getattr_size(ImagingObject* self, void* closure)
{
return Py_BuildValue("ii", self->image->xsize, self->image->ysize);
}
static PyObject*
_getattr_bands(ImagingObject* self, void* closure)
{
return PyInt_FromLong(self->image->bands);
}
static PyObject*
_getattr_id(ImagingObject* self, void* closure)
{
return PyInt_FromSsize_t((Py_ssize_t) self->image);
}
static PyObject*
_getattr_ptr(ImagingObject* self, void* closure)
{
#if (PY_VERSION_HEX >= 0x02070000 && PY_VERSION_HEX < 0x03000000) || PY_VERSION_HEX >= 0x03010000
return PyCapsule_New(self->image, IMAGING_MAGIC, NULL);
#else
return PyCObject_FromVoidPtrAndDesc(self->image, IMAGING_MAGIC, NULL);
#endif
}
static struct PyGetSetDef getsetters[] = {
{ "mode", (getter) _getattr_mode },
{ "size", (getter) _getattr_size },
{ "bands", (getter) _getattr_bands },
{ "id", (getter) _getattr_id },
{ "ptr", (getter) _getattr_ptr },
{ NULL }
};
/* basic sequence semantics */
static Py_ssize_t
image_length(ImagingObject *self)
{
Imaging im = self->image;
return im->xsize * im->ysize;
}
static PyObject *
image_item(ImagingObject *self, Py_ssize_t i)
{
int x, y;
Imaging im = self->image;
if (im->xsize > 0) {
x = i % im->xsize;
y = i / im->xsize;
} else
x = y = 0; /* leave it to getpixel to raise an exception */
return getpixel(im, self->access, x, y);
}
static PySequenceMethods image_as_sequence = {
(lenfunc) image_length, /*sq_length*/
(binaryfunc) NULL, /*sq_concat*/
(ssizeargfunc) NULL, /*sq_repeat*/
(ssizeargfunc) image_item, /*sq_item*/
(ssizessizeargfunc) NULL, /*sq_slice*/
(ssizeobjargproc) NULL, /*sq_ass_item*/
(ssizessizeobjargproc) NULL, /*sq_ass_slice*/
};
/* type description */
static PyTypeObject Imaging_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"ImagingCore", /*tp_name*/
sizeof(ImagingObject), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number */
&image_as_sequence, /*tp_as_sequence */
0, /*tp_as_mapping */
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
methods, /*tp_methods*/
0, /*tp_members*/
getsetters, /*tp_getset*/
};
#ifdef WITH_IMAGEDRAW
static PyTypeObject ImagingFont_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"ImagingFont", /*tp_name*/
sizeof(ImagingFontObject), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)_font_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number */
0, /*tp_as_sequence */
0, /*tp_as_mapping */
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
_font_methods, /*tp_methods*/
0, /*tp_members*/
0, /*tp_getset*/
};
static PyTypeObject ImagingDraw_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"ImagingDraw", /*tp_name*/
sizeof(ImagingDrawObject), /*tp_size*/
0, /*tp_itemsize*/
/* methods */
(destructor)_draw_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number */
0, /*tp_as_sequence */
0, /*tp_as_mapping */
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
_draw_methods, /*tp_methods*/
0, /*tp_members*/
0, /*tp_getset*/
};
#endif
static PyMappingMethods pixel_access_as_mapping = {
(lenfunc) NULL, /*mp_length*/
(binaryfunc) pixel_access_getitem, /*mp_subscript*/
(objobjargproc) pixel_access_setitem, /*mp_ass_subscript*/
};
/* type description */
static PyTypeObject PixelAccess_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"PixelAccess", sizeof(PixelAccessObject), 0,
/* methods */
(destructor)pixel_access_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number */
0, /*tp_as_sequence */
&pixel_access_as_mapping, /*tp_as_mapping */
0 /*tp_hash*/
};
/* -------------------------------------------------------------------- */
/* FIXME: this is something of a mess. Should replace this with
pluggable codecs, but not before PIL 1.2 */
/* Decoders (in decode.c) */
extern PyObject* PyImaging_BitDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_FliDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_GifDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_HexDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_JpegDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_TiffLzwDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_LibTiffDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_MspDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_PackbitsDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_PcdDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_PcxDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_RawDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_SunRleDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_TgaRleDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_XbmDecoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_ZipDecoderNew(PyObject* self, PyObject* args);
/* Encoders (in encode.c) */
extern PyObject* PyImaging_EpsEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_GifEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_JpegEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_PcxEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_RawEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_XbmEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_ZipEncoderNew(PyObject* self, PyObject* args);
extern PyObject* PyImaging_LibTiffEncoderNew(PyObject* self, PyObject* args);
/* Display support etc (in display.c) */
#ifdef WIN32
extern PyObject* PyImaging_CreateWindowWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_DisplayWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_DisplayModeWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_GrabScreenWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_GrabClipboardWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_ListWindowsWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_EventLoopWin32(PyObject* self, PyObject* args);
extern PyObject* PyImaging_DrawWmf(PyObject* self, PyObject* args);
#endif
/* Experimental path stuff (in path.c) */
extern PyObject* PyPath_Create(ImagingObject* self, PyObject* args);
/* Experimental outline stuff (in outline.c) */
extern PyObject* PyOutline_Create(ImagingObject* self, PyObject* args);
extern PyObject* PyImaging_Mapper(PyObject* self, PyObject* args);
extern PyObject* PyImaging_MapBuffer(PyObject* self, PyObject* args);
static PyMethodDef functions[] = {
/* Object factories */
{"alpha_composite", (PyCFunction)_alpha_composite, 1},
{"blend", (PyCFunction)_blend, 1},
{"fill", (PyCFunction)_fill, 1},
{"new", (PyCFunction)_new, 1},
{"getcount", (PyCFunction)_getcount, 1},
/* Functions */
{"convert", (PyCFunction)_convert2, 1},
{"copy", (PyCFunction)_copy2, 1},
/* Codecs */
{"bit_decoder", (PyCFunction)PyImaging_BitDecoderNew, 1},
{"eps_encoder", (PyCFunction)PyImaging_EpsEncoderNew, 1},
{"fli_decoder", (PyCFunction)PyImaging_FliDecoderNew, 1},
{"gif_decoder", (PyCFunction)PyImaging_GifDecoderNew, 1},
{"gif_encoder", (PyCFunction)PyImaging_GifEncoderNew, 1},
{"hex_decoder", (PyCFunction)PyImaging_HexDecoderNew, 1},
{"hex_encoder", (PyCFunction)PyImaging_EpsEncoderNew, 1}, /* EPS=HEX! */
#ifdef HAVE_LIBJPEG
{"jpeg_decoder", (PyCFunction)PyImaging_JpegDecoderNew, 1},
{"jpeg_encoder", (PyCFunction)PyImaging_JpegEncoderNew, 1},
#endif
{"tiff_lzw_decoder", (PyCFunction)PyImaging_TiffLzwDecoderNew, 1},
#ifdef HAVE_LIBTIFF
{"tiff_ccitt_decoder", (PyCFunction)PyImaging_LibTiffDecoderNew, 1},
{"group3_decoder", (PyCFunction)PyImaging_LibTiffDecoderNew, 1},
{"group4_decoder", (PyCFunction)PyImaging_LibTiffDecoderNew, 1},
{"tiff_raw_16_decoder", (PyCFunction)PyImaging_LibTiffDecoderNew, 1},
{"tiff_ccitt_encoder", (PyCFunction)PyImaging_LibTiffEncoderNew, 1},
{"group3_encoder", (PyCFunction)PyImaging_LibTiffEncoderNew, 1},
{"group4_encoder", (PyCFunction)PyImaging_LibTiffEncoderNew, 1},
{"tiff_raw_16_encoder", (PyCFunction)PyImaging_LibTiffEncoderNew, 1},
#endif
{"msp_decoder", (PyCFunction)PyImaging_MspDecoderNew, 1},
{"packbits_decoder", (PyCFunction)PyImaging_PackbitsDecoderNew, 1},
{"pcd_decoder", (PyCFunction)PyImaging_PcdDecoderNew, 1},
{"pcx_decoder", (PyCFunction)PyImaging_PcxDecoderNew, 1},
{"pcx_encoder", (PyCFunction)PyImaging_PcxEncoderNew, 1},
{"raw_decoder", (PyCFunction)PyImaging_RawDecoderNew, 1},
{"raw_encoder", (PyCFunction)PyImaging_RawEncoderNew, 1},
{"sun_rle_decoder", (PyCFunction)PyImaging_SunRleDecoderNew, 1},
{"tga_rle_decoder", (PyCFunction)PyImaging_TgaRleDecoderNew, 1},
{"xbm_decoder", (PyCFunction)PyImaging_XbmDecoderNew, 1},
{"xbm_encoder", (PyCFunction)PyImaging_XbmEncoderNew, 1},
#ifdef HAVE_LIBZ
{"zip_decoder", (PyCFunction)PyImaging_ZipDecoderNew, 1},
{"zip_encoder", (PyCFunction)PyImaging_ZipEncoderNew, 1},
#endif
/* Memory mapping */
#ifdef WITH_MAPPING
#ifdef WIN32
{"map", (PyCFunction)PyImaging_Mapper, 1},
#endif
{"map_buffer", (PyCFunction)PyImaging_MapBuffer, 1},
#endif
/* Display support */
#ifdef WIN32
{"display", (PyCFunction)PyImaging_DisplayWin32, 1},
{"display_mode", (PyCFunction)PyImaging_DisplayModeWin32, 1},
{"grabscreen", (PyCFunction)PyImaging_GrabScreenWin32, 1},
{"grabclipboard", (PyCFunction)PyImaging_GrabClipboardWin32, 1},
{"createwindow", (PyCFunction)PyImaging_CreateWindowWin32, 1},
{"eventloop", (PyCFunction)PyImaging_EventLoopWin32, 1},
{"listwindows", (PyCFunction)PyImaging_ListWindowsWin32, 1},
{"drawwmf", (PyCFunction)PyImaging_DrawWmf, 1},
#endif
/* Utilities */
{"crc32", (PyCFunction)_crc32, 1},
{"getcodecstatus", (PyCFunction)_getcodecstatus, 1},
/* Debugging stuff */
{"open_ppm", (PyCFunction)_open_ppm, 1},
/* Special effects (experimental) */
#ifdef WITH_EFFECTS
{"effect_mandelbrot", (PyCFunction)_effect_mandelbrot, 1},
{"effect_noise", (PyCFunction)_effect_noise, 1},
{"linear_gradient", (PyCFunction)_linear_gradient, 1},
{"radial_gradient", (PyCFunction)_radial_gradient, 1},
{"wedge", (PyCFunction)_linear_gradient, 1}, /* Compatibility */
#endif
/* Drawing support stuff */
#ifdef WITH_IMAGEDRAW
{"font", (PyCFunction)_font_new, 1},
{"draw", (PyCFunction)_draw_new, 1},
#endif
/* Experimental path stuff */
#ifdef WITH_IMAGEPATH
{"path", (PyCFunction)PyPath_Create, 1},
#endif
/* Experimental arrow graphics stuff */
#ifdef WITH_ARROW
{"outline", (PyCFunction)PyOutline_Create, 1},
#endif
{NULL, NULL} /* sentinel */
};
static int
setup_module(PyObject* m) {
PyObject* d = PyModule_GetDict(m);
/* Ready object types */
if (PyType_Ready(&Imaging_Type) < 0)
return -1;
#ifdef WITH_IMAGEDRAW
if (PyType_Ready(&ImagingFont_Type) < 0)
return -1;
if (PyType_Ready(&ImagingDraw_Type) < 0)
return -1;
#endif
if (PyType_Ready(&PixelAccess_Type) < 0)
return -1;
ImagingAccessInit();
#ifdef HAVE_LIBJPEG
{
extern const char* ImagingJpegVersion(void);
PyDict_SetItemString(d, "jpeglib_version", PyUnicode_FromString(ImagingJpegVersion()));
}
#endif
#ifdef HAVE_LIBZ
/* zip encoding strategies */
PyModule_AddIntConstant(m, "DEFAULT_STRATEGY", Z_DEFAULT_STRATEGY);
PyModule_AddIntConstant(m, "FILTERED", Z_FILTERED);
PyModule_AddIntConstant(m, "HUFFMAN_ONLY", Z_HUFFMAN_ONLY);
PyModule_AddIntConstant(m, "RLE", Z_RLE);
PyModule_AddIntConstant(m, "FIXED", Z_FIXED);
{
extern const char* ImagingZipVersion(void);
PyDict_SetItemString(d, "zlib_version", PyUnicode_FromString(ImagingZipVersion()));
}
#endif
PyDict_SetItemString(d, "PILLOW_VERSION", PyUnicode_FromString(PILLOW_VERSION));
return 0;
}
#if PY_VERSION_HEX >= 0x03000000
PyMODINIT_FUNC
PyInit__imaging(void) {
PyObject* m;
static PyModuleDef module_def = {
PyModuleDef_HEAD_INIT,
"_imaging", /* m_name */
NULL, /* m_doc */
-1, /* m_size */
functions, /* m_methods */
};
m = PyModule_Create(&module_def);
if (setup_module(m) < 0)
return NULL;
return m;
}
#else
PyMODINIT_FUNC
init_imaging(void)
{
PyObject* m = Py_InitModule("_imaging", functions);
setup_module(m);
}
#endif
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