58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
typedef struct _TIFFImageIter TIFFImageIter;
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/* The callback function is called for each "block" of image pixel data after
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it has been read from the file and decoded. This image pixel data is in the
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buffer pp, and this data represents the image pixels from (x,y) to
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(x+w,y+h). It is stored in pixel format, so each pixel contains
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img->samplesperpixel consecutive samples each containing img->bitspersample
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bits of data. The array pp is ordered in h consecutive rows of w+fromskew
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pixels each. */
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typedef void (*ImageIterTileContigRoutine)
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(TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
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unsigned char*);
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#define DECLAREContigCallbackFunc(name) \
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static void name(\
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TIFFImageIter* img, \
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void* user_data, \
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uint32 x, uint32 y, \
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uint32 w, uint32 h, \
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int32 fromskew, \
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u_char* pp \
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)
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typedef void (*ImageIterTileSeparateRoutine)
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(TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
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unsigned char*, unsigned char*, unsigned char*, unsigned char*);
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#define DECLARESepCallbackFunc(name) \
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static void name(\
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TIFFImageIter* img, \
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void* user_data, \
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uint32 x, uint32 y, \
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uint32 w, uint32 h,\
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int32 fromskew, \
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u_char* r, u_char* g, u_char* b, u_char* a\
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)
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struct _TIFFImageIter {
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TIFF* tif; /* image handle */
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int stoponerr; /* stop on read error */
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int isContig; /* data is packed/separate */
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int alpha; /* type of alpha data present */
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uint32 width; /* image width */
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uint32 height; /* image height */
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uint16 bitspersample; /* image bits/sample */
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uint16 samplesperpixel; /* image samples/pixel */
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uint16 orientation; /* image orientation */
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uint16 photometric; /* image photometric interp */
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uint16* redcmap; /* colormap pallete */
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uint16* greencmap;
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uint16* bluecmap;
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/* get image data routine */
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int (*get)(TIFFImageIter*, void *udata, uint32, uint32);
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union {
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void (*any)(TIFFImageIter*);
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ImageIterTileContigRoutine contig;
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ImageIterTileSeparateRoutine separate;
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} callback; /* fn to exec for each block */
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};
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