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149 lines
3.0 KiB
C++
149 lines
3.0 KiB
C++
// This code is in the public domain -- castanyo@yahoo.es
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#pragma once
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#ifndef NV_IMAGE_TGAFILE_H
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#define NV_IMAGE_TGAFILE_H
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#include "nvcore/Stream.h"
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namespace nv
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{
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// TGA types
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enum TGAType {
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TGA_TYPE_INDEXED = 1,
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TGA_TYPE_RGB = 2,
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TGA_TYPE_GREY = 3,
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TGA_TYPE_RLE_INDEXED = 9,
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TGA_TYPE_RLE_RGB = 10,
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TGA_TYPE_RLE_GREY = 11
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};
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#define TGA_INTERLEAVE_MASK 0xc0
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#define TGA_INTERLEAVE_NONE 0x00
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#define TGA_INTERLEAVE_2WAY 0x40
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#define TGA_INTERLEAVE_4WAY 0x80
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#define TGA_ORIGIN_MASK 0x30
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#define TGA_ORIGIN_LEFT 0x00
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#define TGA_ORIGIN_RIGHT 0x10
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#define TGA_ORIGIN_LOWER 0x00
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#define TGA_ORIGIN_UPPER 0x20
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#define TGA_HAS_ALPHA 0x0F
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/// Tga Header.
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struct TgaHeader {
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uint8 id_length;
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uint8 colormap_type;
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uint8 image_type;
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uint16 colormap_index;
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uint16 colormap_length;
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uint8 colormap_size;
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uint16 x_origin;
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uint16 y_origin;
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uint16 width;
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uint16 height;
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uint8 pixel_size;
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uint8 flags;
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enum { Size = 18 }; //const static int SIZE = 18;
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};
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/// Tga File.
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struct TgaFile {
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TgaFile() {
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mem = NULL;
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}
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~TgaFile() {
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free();
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}
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uint size() const {
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return head.width * head.height * (head.pixel_size / 8);
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}
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void allocate() {
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nvCheck( mem == NULL );
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mem = new uint8[size()];
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}
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void free() {
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delete [] mem;
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mem = NULL;
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}
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TgaHeader head;
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uint8 * mem;
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};
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inline Stream & operator<< (Stream & s, TgaHeader & head)
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{
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s << head.id_length << head.colormap_type << head.image_type;
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s << head.colormap_index << head.colormap_length << head.colormap_size;
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s << head.x_origin << head.y_origin << head.width << head.height;
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s << head.pixel_size << head.flags;
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return s;
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}
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inline Stream & operator<< (Stream & s, TgaFile & tga)
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{
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s << tga.head;
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if( s.isLoading() ) {
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tga.allocate();
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}
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s.serialize( tga.mem, tga.size() );
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return s;
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}
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// @@ Move to BMP file?
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const int BITMAPFILEHEADER_SIZE = 14;
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const int BITMAPINFOHEADER_SIZE = 40;
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const int BM_TYPE = ((unsigned int)'M') << 8 | ((unsigned int)'B');
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// BMP Header.
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struct BmpFileHeader {
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uint16 type;
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uint32 size;
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uint16 reserved1;
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uint16 reserved2;
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uint32 offBits;
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};
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struct BmpInfoHeader {
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uint32 size;
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uint32 width;
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uint32 height;
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uint16 planes;
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uint16 bitCount;
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uint32 compression;
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uint32 sizeImage;
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uint32 xPelsPerMeter;
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uint32 yPelsPerMeter;
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uint32 clrUsed;
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uint32 clrImportant;
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};
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inline Stream & operator<< (Stream & s, BmpFileHeader & bmp) {
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return s << bmp.type << bmp.size << bmp.reserved1 << bmp.reserved2 << bmp.offBits;
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}
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inline Stream & operator<< (Stream & s, BmpInfoHeader & bmp) {
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s << bmp.size << bmp.width << bmp.height << bmp.planes << bmp.bitCount << bmp.compression << bmp.sizeImage;
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s << bmp.xPelsPerMeter << bmp.yPelsPerMeter << bmp.clrUsed << bmp.clrImportant;
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return s;
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}
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} // nv namespace
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#endif // NV_IMAGE_TGAFILE_H
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