initial program check in

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@299 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/translators/bmptranslator/BMPTranslator.h

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+// BMPTranslator.h
+
+#ifndef BMP_TRANSLATOR_H
+#define BMP_TRANSLATOR_H
+
+#include <Translator.h>
+#include <TranslatorFormats.h>
+#include <TranslationDefs.h>
+#include <GraphicsDefs.h>
+#include <DataIO.h>
+#include <ByteOrder.h>
+
+#define BMP_NO_COMPRESS 0
+#define BMP_RLE8_COMPRESS 1
+#define BMP_RLE4_COMPRESS 2
+
+#define BMP_TRANSLATOR_VERSION 100
+#define BMP_QUALITY 1.0
+#define BMP_CAPABILITY 1.0
+
+#define BBT_QUALITY 1.0
+#define BBT_CAPABILITY 1.0
+
+struct BMPFileHeader {
+	uint16 magic;			// = 'BM'
+	uint32 fileSize;		// file size in bytes
+	uint32 reserved;		// equals 0
+	uint32 dataOffset;		// file offset to actual image
+};
+
+struct BMPInfoHeader {
+	uint32 size;			// size of this struct (40)
+	uint32 width;			// bitmap width
+	uint32 height;			// bitmap height
+	uint16 planes;			// number of planes, always 1?
+	uint16 bitsperpixel;	// bits per pixel, (1,4,8,16 or 24)
+	uint32 compression;		// type of compression (0 none, 1 8 bit RLE, 2 4 bit RLE)
+	uint32 imagesize;		// compressed size of image? set to zero if compression == 0?
+	uint32 xpixperm;		// horizontal pixels per meter
+	uint32 ypixperm;		// vertical pixels per meter
+	uint32 colorsused;		// number of actually used colors
+	uint32 colorsimportant;	// number of important colors, zero = all
+};
+
+struct BMPColorTable {
+	uint8 red;				// red intensity
+	uint8 green;			// green intensity
+	uint8 blue;				// blue intensity
+	uint8 reserved;			// unused (=0)
+};
+
+class BMPTranslator : public BTranslator {
+public:
+	BMPTranslator();
+	
+	virtual const char *TranslatorName() const;
+		// returns the short name of the translator
+		
+	virtual const char *TranslatorInfo() const;
+		// returns a verbose name/description for the translator
+	
+	virtual int32 TranslatorVersion() const;
+		// returns the version of the translator
+
+	virtual const translation_format *InputFormats(int32 *out_count)
+		const;
+		// returns the input formats and the count of input formats
+		// that this translator supports
+		
+	virtual const translation_format *OutputFormats(int32 *out_count)
+		const;
+		// returns the output formats and the count of output formats
+		// that this translator supports
+
+	virtual status_t Identify(BPositionIO *inSource,
+		const translation_format *inFormat, BMessage *ioExtension,
+		translator_info *outInfo, uint32 outType);
+		// determines whether or not this translator can convert the
+		// data in inSource to the type outType
+
+	virtual status_t Translate(BPositionIO *inSource,
+		const translator_info *inInfo, BMessage *ioExtension,
+		uint32 outType, BPositionIO *outDestination);
+		// this function is the whole point of the Translation Kit,
+		// it translates the data in inSource to outDestination
+		// using the format outType
+
+protected:
+	virtual ~BMPTranslator();
+		// this is protected because the object is deleted by the
+		// Release() function instead of being deleted directly by
+		// the user
+		
+private:
+	char fName[30];
+	char fInfo[100];
+};
+
+#endif // #ifndef BMP_TRANSLATOR_H