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81fd113506
We add PHP bindings for libgd's features to read TGA files, which are available as of libgd 2.1.0. As PHP's bundled libgd doesn't yet include the respective features of the external libgd, we add these. Since TGA has no easily recognizable file signature, we don't add TGA support for imagecreatefromstring() or getimagesize() and friends.
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
#ifndef __TGA_H
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#define __TGA_H 1
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#include "gd.h"
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#include "gdhelpers.h"
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#include "gd_intern.h"
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typedef struct oTga_ {
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uint8_t identsize; // size of ID field that follows 18 uint8_t header (0 usually)
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uint8_t colormaptype; // type of colour map 0=none, 1=has palette [IGNORED] Adrian requested no support
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uint8_t imagetype; // type of image 0=none,1=indexed,2=rgb,3=grey,+8=rle packed
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int colormapstart; // first colour map entry in palette [IGNORED] Adrian requested no support
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int colormaplength; // number of colours in palette [IGNORED] Adrian requested no support
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uint8_t colormapbits; // number of bits per palette entry 15,16,24,32 [IGNORED] Adrian requested no support
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int xstart; // image x origin
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int ystart; // image y origin
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int width; // image width in pixels
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int height; // image height in pixels
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uint8_t bits; // image bits per pixel 8,16,24,32
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uint8_t alphabits; // alpha bits (low 4bits of header 17)
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uint8_t fliph; // horizontal or vertical
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uint8_t flipv; // flip
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char *ident; // identifcation tag string
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int *bitmap; // bitmap data
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} oTga;
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#define TGA_TYPE_NO_IMAGE 0
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#define TGA_TYPE_INDEXED 1
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#define TGA_TYPE_RGB 2
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#define TGA_TYPE_GREYSCALE 3
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#define TGA_TYPE_INDEXED_RLE 9
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#define TGA_TYPE_RGB_RLE 10
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#define TGA_TYPE_GREYSCALE_RLE 11
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#define TGA_TYPE_INDEXED_HUFFMAN_DELTA_RLE 32
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#define TGA_TYPE_RGB_HUFFMAN_DELTA_QUADTREE_RLE 33
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#define TGA_BPP_8 8
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#define TGA_BPP_16 16
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#define TGA_BPP_24 24
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#define TGA_BPP_32 32
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#define TGA_RLE_FLAG 128
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int read_header_tga(gdIOCtx *ctx, oTga *tga);
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int read_image_tga(gdIOCtx *ctx, oTga *tga);
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void free_tga(oTga *tga);
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#endif //__TGA_H
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