Pillow/libImaging/Imaging.h

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/*
* The Python Imaging Library
* $Id$
*
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* declarations for the imaging core library
*
* Copyright (c) 1997-2005 by Secret Labs AB
* Copyright (c) 1995-2005 by Fredrik Lundh
*
* See the README file for information on usage and redistribution.
*/
#include "ImPlatform.h"
#if defined(__cplusplus)
extern "C" {
#endif
#ifndef M_PI
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#define M_PI 3.1415926535897932384626433832795
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#endif
/* -------------------------------------------------------------------- */
/*
* Image data organization:
*
* mode bytes byte order
* -------------------------------
* 1 1 1
* L 1 L
* P 1 P
* I 4 I (32-bit integer, native byte order)
* F 4 F (32-bit IEEE float, native byte order)
* RGB 4 R, G, B, -
* RGBA 4 R, G, B, A
* CMYK 4 C, M, Y, K
* YCbCr 4 Y, Cb, Cr, -
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* Lab 4 L, a, b, -
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*
* experimental modes (incomplete):
* LA 4 L, -, -, A
* PA 4 P, -, -, A
* I;16 2 I (16-bit integer, native byte order)
*
* "P" is an 8-bit palette mode, which should be mapped through the
* palette member to get an output image. Check palette->mode to
* find the corresponding "real" mode.
*
* For information on how to access Imaging objects from your own C
* extensions, see http://www.effbot.org/zone/pil-extending.htm
*/
/* Handles */
typedef struct ImagingMemoryInstance* Imaging;
typedef struct ImagingAccessInstance* ImagingAccess;
typedef struct ImagingHistogramInstance* ImagingHistogram;
typedef struct ImagingOutlineInstance* ImagingOutline;
typedef struct ImagingPaletteInstance* ImagingPalette;
/* handle magics (used with PyCObject). */
#define IMAGING_MAGIC "PIL Imaging"
/* pixel types */
#define IMAGING_TYPE_UINT8 0
#define IMAGING_TYPE_INT32 1
#define IMAGING_TYPE_FLOAT32 2
#define IMAGING_TYPE_SPECIAL 3 /* check mode for details */
#define IMAGING_MODE_LENGTH 6+1 /* Band names ("1", "L", "P", "RGB", "RGBA", "CMYK", "YCbCr", "BGR;xy") */
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struct ImagingMemoryInstance {
/* Format */
char mode[IMAGING_MODE_LENGTH]; /* Band names ("1", "L", "P", "RGB", "RGBA", "CMYK", "YCbCr", "BGR;xy") */
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int type; /* Data type (IMAGING_TYPE_*) */
int depth; /* Depth (ignored in this version) */
int bands; /* Number of bands (1, 2, 3, or 4) */
int xsize; /* Image dimension. */
int ysize;
/* Colour palette (for "P" images only) */
ImagingPalette palette;
/* Data pointers */
UINT8 **image8; /* Set for 8-bit images (pixelsize=1). */
INT32 **image32; /* Set for 32-bit images (pixelsize=4). */
/* Internals */
char **image; /* Actual raster data. */
char *block; /* Set if data is allocated in a single block. */
int pixelsize; /* Size of a pixel, in bytes (1, 2 or 4) */
int linesize; /* Size of a line, in bytes (xsize * pixelsize) */
/* Virtual methods */
void (*destroy)(Imaging im);
};
#define IMAGING_PIXEL_1(im,x,y) ((im)->image8[(y)][(x)])
#define IMAGING_PIXEL_L(im,x,y) ((im)->image8[(y)][(x)])
#define IMAGING_PIXEL_LA(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_P(im,x,y) ((im)->image8[(y)][(x)])
#define IMAGING_PIXEL_PA(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_I(im,x,y) ((im)->image32[(y)][(x)])
#define IMAGING_PIXEL_F(im,x,y) (((FLOAT32*)(im)->image32[y])[x])
#define IMAGING_PIXEL_RGB(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_RGBA(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_CMYK(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_YCbCr(im,x,y) ((im)->image[(y)][(x)*4])
#define IMAGING_PIXEL_UINT8(im,x,y) ((im)->image8[(y)][(x)])
#define IMAGING_PIXEL_INT32(im,x,y) ((im)->image32[(y)][(x)])
#define IMAGING_PIXEL_FLOAT32(im,x,y) (((FLOAT32*)(im)->image32[y])[x])
struct ImagingAccessInstance {
const char* mode;
void* (*line)(Imaging im, int x, int y);
void (*get_pixel)(Imaging im, int x, int y, void* pixel);
void (*put_pixel)(Imaging im, int x, int y, const void* pixel);
};
struct ImagingHistogramInstance {
/* Format */
char mode[IMAGING_MODE_LENGTH]; /* Band names (of corresponding source image) */
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int bands; /* Number of bands (1, 3, or 4) */
/* Data */
long *histogram; /* Histogram (bands*256 longs) */
};
struct ImagingPaletteInstance {
/* Format */
char mode[IMAGING_MODE_LENGTH]; /* Band names */
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/* Data */
UINT8 palette[1024];/* Palette data (same format as image data) */
INT16* cache; /* Palette cache (used for predefined palettes) */
int keep_cache; /* This palette will be reused; keep cache */
};
/* Objects */
/* ------- */
extern int ImagingNewCount;
extern Imaging ImagingNew(const char* mode, int xsize, int ysize);
extern Imaging ImagingNew2(const char* mode, Imaging imOut, Imaging imIn);
extern void ImagingDelete(Imaging im);
extern Imaging ImagingNewBlock(const char* mode, int xsize, int ysize);
extern Imaging ImagingNewArray(const char* mode, int xsize, int ysize);
extern Imaging ImagingNewMap(const char* filename, int readonly,
const char* mode, int xsize, int ysize);
extern Imaging ImagingNewPrologue(const char *mode,
unsigned xsize, unsigned ysize);
extern Imaging ImagingNewPrologueSubtype(const char *mode,
unsigned xsize, unsigned ysize,
int structure_size);
extern Imaging ImagingNewEpilogue(Imaging im);
extern void ImagingCopyInfo(Imaging destination, Imaging source);
extern void ImagingHistogramDelete(ImagingHistogram histogram);
extern void ImagingAccessInit(void);
extern ImagingAccess ImagingAccessNew(Imaging im);
extern void _ImagingAccessDelete(Imaging im, ImagingAccess access);
#define ImagingAccessDelete(im, access) /* nop, for now */
/*#define ImagingAccessDelete(im, access) \
((access)->dynamic ? _ImagingAccessDelete((im), (access)), 0 : 0)) */
extern ImagingPalette ImagingPaletteNew(const char *mode);
extern ImagingPalette ImagingPaletteNewBrowser(void);
extern ImagingPalette ImagingPaletteDuplicate(ImagingPalette palette);
extern void ImagingPaletteDelete(ImagingPalette palette);
extern int ImagingPaletteCachePrepare(ImagingPalette palette);
extern void ImagingPaletteCacheUpdate(ImagingPalette palette,
int r, int g, int b);
extern void ImagingPaletteCacheDelete(ImagingPalette palette);
#define ImagingPaletteCache(p, r, g, b)\
p->cache[(r>>2) + (g>>2)*64 + (b>>2)*64*64]
extern Imaging ImagingQuantize(Imaging im, int colours, int mode, int kmeans);
/* Threading */
/* --------- */
typedef void* ImagingSectionCookie;
extern void ImagingSectionEnter(ImagingSectionCookie* cookie);
extern void ImagingSectionLeave(ImagingSectionCookie* cookie);
/* Exceptions */
/* ---------- */
extern void* ImagingError_IOError(void);
extern void* ImagingError_MemoryError(void);
extern void* ImagingError_ModeError(void); /* maps to ValueError by default */
extern void* ImagingError_Mismatch(void); /* maps to ValueError by default */
extern void* ImagingError_ValueError(const char* message);
extern void ImagingError_Clear(void);
/* Transform callbacks */
/* ------------------- */
/* standard transforms */
#define IMAGING_TRANSFORM_AFFINE 0
#define IMAGING_TRANSFORM_PERSPECTIVE 2
#define IMAGING_TRANSFORM_QUAD 3
/* standard filters */
#define IMAGING_TRANSFORM_NEAREST 0
#define IMAGING_TRANSFORM_LANCZOS 1
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#define IMAGING_TRANSFORM_BILINEAR 2
#define IMAGING_TRANSFORM_BICUBIC 3
typedef int (*ImagingTransformMap)(double* X, double* Y,
int x, int y, void* data);
typedef int (*ImagingTransformFilter)(void* out, Imaging im,
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double x, double y);
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/* Image Manipulation Methods */
/* -------------------------- */
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extern Imaging ImagingAlphaComposite(Imaging imIn1, Imaging imIn2);
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extern Imaging ImagingBlend(Imaging imIn1, Imaging imIn2, float alpha);
extern Imaging ImagingCopy(Imaging im);
extern Imaging ImagingConvert(Imaging im, const char* mode, ImagingPalette palette, int dither);
extern Imaging ImagingConvertInPlace(Imaging im, const char* mode);
extern Imaging ImagingConvertMatrix(Imaging im, const char *mode, float m[]);
extern Imaging ImagingConvertTransparent(Imaging im, const char *mode, int r, int g, int b);
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extern Imaging ImagingCrop(Imaging im, int x0, int y0, int x1, int y1);
extern Imaging ImagingExpand(Imaging im, int x, int y, int mode);
extern Imaging ImagingFill(Imaging im, const void* ink);
extern int ImagingFill2(
Imaging into, const void* ink, Imaging mask,
int x0, int y0, int x1, int y1);
extern Imaging ImagingFillBand(Imaging im, int band, int color);
extern Imaging ImagingFillLinearGradient(const char* mode);
extern Imaging ImagingFillRadialGradient(const char* mode);
extern Imaging ImagingFilter(
Imaging im, int xsize, int ysize, const FLOAT32* kernel,
FLOAT32 offset, FLOAT32 divisor);
extern Imaging ImagingFlipLeftRight(Imaging imOut, Imaging imIn);
extern Imaging ImagingFlipTopBottom(Imaging imOut, Imaging imIn);
extern Imaging ImagingGaussianBlur(Imaging imOut, Imaging imIn, float radius,
int passes);
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extern Imaging ImagingGetBand(Imaging im, int band);
extern int ImagingGetBBox(Imaging im, int bbox[4]);
typedef struct { int x, y; INT32 count; INT32 pixel; } ImagingColorItem;
extern ImagingColorItem* ImagingGetColors(Imaging im, int maxcolors,
int *colors);
extern int ImagingGetExtrema(Imaging im, void *extrema);
extern int ImagingGetProjection(Imaging im, UINT8* xproj, UINT8* yproj);
extern ImagingHistogram ImagingGetHistogram(
Imaging im, Imaging mask, void *extrema);
extern Imaging ImagingModeFilter(Imaging im, int size);
extern Imaging ImagingNegative(Imaging im);
extern Imaging ImagingOffset(Imaging im, int xoffset, int yoffset);
extern int ImagingPaste(
Imaging into, Imaging im, Imaging mask,
int x0, int y0, int x1, int y1);
extern Imaging ImagingPoint(
Imaging im, const char* tablemode, const void* table);
extern Imaging ImagingPointTransform(
Imaging imIn, double scale, double offset);
extern Imaging ImagingPutBand(Imaging im, Imaging imIn, int band);
extern Imaging ImagingRankFilter(Imaging im, int size, int rank);
extern Imaging ImagingRotate90(Imaging imOut, Imaging imIn);
extern Imaging ImagingRotate180(Imaging imOut, Imaging imIn);
extern Imaging ImagingRotate270(Imaging imOut, Imaging imIn);
extern Imaging ImagingResample(Imaging imIn, int xsize, int ysize, int filter);
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extern Imaging ImagingTranspose(Imaging imOut, Imaging imIn);
extern Imaging ImagingTransform(
Imaging imOut, Imaging imIn, int method, int x0, int y0, int x1, int y1,
double *a, int filter, int fill);
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extern Imaging ImagingUnsharpMask(
Imaging imOut, Imaging im, float radius, int percent, int threshold);
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extern Imaging ImagingBoxBlur(Imaging imOut, Imaging imIn, float radius, int n);
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extern Imaging ImagingCopy2(Imaging imOut, Imaging imIn);
extern Imaging ImagingConvert2(Imaging imOut, Imaging imIn);
/* Channel operations */
/* any mode, except "F" */
extern Imaging ImagingChopLighter(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopDarker(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopDifference(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopMultiply(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopScreen(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopAdd(
Imaging imIn1, Imaging imIn2, float scale, int offset);
extern Imaging ImagingChopSubtract(
Imaging imIn1, Imaging imIn2, float scale, int offset);
extern Imaging ImagingChopAddModulo(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopSubtractModulo(Imaging imIn1, Imaging imIn2);
/* "1" images only */
extern Imaging ImagingChopAnd(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopOr(Imaging imIn1, Imaging imIn2);
extern Imaging ImagingChopXor(Imaging imIn1, Imaging imIn2);
/* Image measurement */
extern void ImagingCrack(Imaging im, int x0, int y0);
/* Graphics */
extern int ImagingDrawArc(Imaging im, int x0, int y0, int x1, int y1,
float start, float end, const void* ink, int op);
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extern int ImagingDrawBitmap(Imaging im, int x0, int y0, Imaging bitmap,
const void* ink, int op);
extern int ImagingDrawChord(Imaging im, int x0, int y0, int x1, int y1,
float start, float end, const void* ink, int fill,
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int op);
extern int ImagingDrawEllipse(Imaging im, int x0, int y0, int x1, int y1,
const void* ink, int fill, int op);
extern int ImagingDrawLine(Imaging im, int x0, int y0, int x1, int y1,
const void* ink, int op);
extern int ImagingDrawWideLine(Imaging im, int x0, int y0, int x1, int y1,
const void* ink, int width, int op);
extern int ImagingDrawPieslice(Imaging im, int x0, int y0, int x1, int y1,
float start, float end, const void* ink, int fill,
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int op);
extern int ImagingDrawPoint(Imaging im, int x, int y, const void* ink, int op);
extern int ImagingDrawPolygon(Imaging im, int points, int *xy,
const void* ink, int fill, int op);
extern int ImagingDrawRectangle(Imaging im, int x0, int y0, int x1, int y1,
const void* ink, int fill, int op);
/* Level 2 graphics (WORK IN PROGRESS) */
extern ImagingOutline ImagingOutlineNew(void);
extern void ImagingOutlineDelete(ImagingOutline outline);
extern int ImagingDrawOutline(Imaging im, ImagingOutline outline,
const void* ink, int fill, int op);
extern int ImagingOutlineMove(ImagingOutline outline, float x, float y);
extern int ImagingOutlineLine(ImagingOutline outline, float x, float y);
extern int ImagingOutlineCurve(ImagingOutline outline, float x1, float y1,
float x2, float y2, float x3, float y3);
extern int ImagingOutlineTransform(ImagingOutline outline, double a[6]);
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extern int ImagingOutlineClose(ImagingOutline outline);
/* Special effects */
extern Imaging ImagingEffectSpread(Imaging imIn, int distance);
extern Imaging ImagingEffectNoise(int xsize, int ysize, float sigma);
extern Imaging ImagingEffectMandelbrot(int xsize, int ysize,
double extent[4], int quality);
/* Obsolete */
extern int ImagingToString(Imaging im, int orientation, char *buffer);
extern int ImagingFromString(Imaging im, int orientation, char *buffer);
/* File I/O */
/* -------- */
/* Built-in drivers */
extern Imaging ImagingOpenPPM(const char* filename);
extern int ImagingSavePPM(Imaging im, const char* filename);
/* Utility functions */
extern UINT32 ImagingCRC32(UINT32 crc, UINT8* buffer, int bytes);
/* Codecs */
typedef struct ImagingCodecStateInstance *ImagingCodecState;
typedef int (*ImagingCodec)(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingBitDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingEpsEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingFliDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingGifDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingGifEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingHexDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#ifdef HAVE_LIBJPEG
extern int ImagingJpegDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingJpegDecodeCleanup(ImagingCodecState state);
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extern int ImagingJpegEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#endif
#ifdef HAVE_OPENJPEG
extern int ImagingJpeg2KDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingJpeg2KDecodeCleanup(ImagingCodecState state);
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extern int ImagingJpeg2KEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingJpeg2KEncodeCleanup(ImagingCodecState state);
#endif
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extern int ImagingLzwDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#ifdef HAVE_LIBTIFF
extern int ImagingLibTiffDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingLibTiffEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#endif
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#ifdef HAVE_LIBMPEG
extern int ImagingMpegDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#endif
extern int ImagingMspDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingPackbitsDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingPcdDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingPcxDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingPcxEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingRawDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingRawEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingSunRleDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingTgaRleDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingXbmDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingXbmEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#ifdef HAVE_LIBZ
extern int ImagingZipDecode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
extern int ImagingZipEncode(Imaging im, ImagingCodecState state,
UINT8* buffer, int bytes);
#endif
typedef void (*ImagingShuffler)(UINT8* out, const UINT8* in, int pixels);
/* Public shufflers */
extern void ImagingPackRGB(UINT8* out, const UINT8* in, int pixels);
extern void ImagingPackBGR(UINT8* out, const UINT8* in, int pixels);
extern void ImagingUnpackRGB(UINT8* out, const UINT8* in, int pixels);
extern void ImagingUnpackBGR(UINT8* out, const UINT8* in, int pixels);
extern void ImagingUnpackYCC(UINT8* out, const UINT8* in, int pixels);
extern void ImagingUnpackYCCA(UINT8* out, const UINT8* in, int pixels);
extern void ImagingUnpackYCbCr(UINT8* out, const UINT8* in, int pixels);
extern void ImagingConvertRGB2YCbCr(UINT8* out, const UINT8* in, int pixels);
extern void ImagingConvertYCbCr2RGB(UINT8* out, const UINT8* in, int pixels);
extern ImagingShuffler ImagingFindUnpacker(const char* mode,
const char* rawmode, int* bits_out);
extern ImagingShuffler ImagingFindPacker(const char* mode,
const char* rawmode, int* bits_out);
struct ImagingCodecStateInstance {
int count;
int state;
int errcode;
int x, y;
int ystep;
int xsize, ysize, xoff, yoff;
ImagingShuffler shuffle;
int bits, bytes;
UINT8 *buffer;
void *context;
};
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/* Incremental encoding/decoding support */
typedef struct ImagingIncrementalCodecStruct *ImagingIncrementalCodec;
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typedef int (*ImagingIncrementalCodecEntry)(Imaging im,
ImagingCodecState state,
ImagingIncrementalCodec codec);
enum {
INCREMENTAL_CODEC_READ = 1,
INCREMENTAL_CODEC_WRITE = 2
};
enum {
INCREMENTAL_CODEC_NOT_SEEKABLE = 0,
INCREMENTAL_CODEC_SEEKABLE = 1
};
extern ImagingIncrementalCodec ImagingIncrementalCodecCreate(ImagingIncrementalCodecEntry codec_entry, Imaging im, ImagingCodecState state, int read_or_write, int seekable, int fd);
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extern void ImagingIncrementalCodecDestroy(ImagingIncrementalCodec codec);
extern int ImagingIncrementalCodecPushBuffer(ImagingIncrementalCodec codec, UINT8 *buf, int bytes);
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extern Py_ssize_t ImagingIncrementalCodecRead(ImagingIncrementalCodec codec, void *buffer, size_t bytes);
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extern off_t ImagingIncrementalCodecSkip(ImagingIncrementalCodec codec, off_t bytes);
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extern Py_ssize_t ImagingIncrementalCodecWrite(ImagingIncrementalCodec codec, const void *buffer, size_t bytes);
extern off_t ImagingIncrementalCodecSeek(ImagingIncrementalCodec codec, off_t bytes);
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extern size_t ImagingIncrementalCodecBytesInBuffer(ImagingIncrementalCodec codec);
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/* Errcodes */
#define IMAGING_CODEC_END 1
#define IMAGING_CODEC_OVERRUN -1
#define IMAGING_CODEC_BROKEN -2
#define IMAGING_CODEC_UNKNOWN -3
#define IMAGING_CODEC_CONFIG -8
#define IMAGING_CODEC_MEMORY -9
#if defined(__cplusplus)
}
#endif