vdr-plugin-skindesigner/libcore/imageloader.h

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#ifndef __NOPACITY_IMAGELOADER_H
#define __NOPACITY_IMAGELOADER_H
#include <cairo.h>
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#include <librsvg/rsvg.h>
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#ifndef LIBRSVG_CHECK_VERSION // Workaround for librsvg < 2.36.2
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#include <librsvg/rsvg-cairo.h>
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#include <librsvg/librsvg-features.h>
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#endif
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#include <jpeglib.h>
#include <setjmp.h>
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#include <vdr/osd.h>
#include <vdr/tools.h>
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//
// Image importers
//
class cImageImporter {
public:
cImageImporter() {};
virtual ~cImageImporter() {};
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virtual bool LoadImage(const char *path) { return false; };
virtual void DrawToCairo(cairo_t *cr) {};
virtual void GetImageSize(int &width, int &height) {};
};
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// Image importer for PNG
class cImageImporterPNG : public cImageImporter {
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public:
cImageImporterPNG();
~cImageImporterPNG();
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bool LoadImage(const char *path);
void DrawToCairo(cairo_t *cr);
void GetImageSize(int &width, int &height);
private:
cairo_surface_t *surface;
};
// Image importer for SVG
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#if !LIBRSVG_CHECK_VERSION(2, 36, 0)
#error librsvg version 2.36.0 or above required!
#endif
class cImageImporterSVG : public cImageImporter {
public:
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cImageImporterSVG();
~cImageImporterSVG();
bool LoadImage(const char *path);
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void DrawToCairo(cairo_t *cr);
void GetImageSize(int &width, int &height);
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static void InitLibRSVG();
private:
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RsvgHandle *handle;
};
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// Image importer for JPG
#if BITS_IN_JSAMPLE != 8
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#error libjpeg has to be compiled with 8-bit samples!
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#endif
class cImageImporterJPG : public cImageImporter {
public:
cImageImporterJPG();
~cImageImporterJPG();
bool LoadImage(const char *path);
void DrawToCairo(cairo_t *cr);
void GetImageSize(int &width, int &height);
private:
j_decompress_ptr cinfo;
FILE *infile;
};
//
// Image loader class
//
class cImageLoader {
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private:
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cImageImporter *importer;
public:
cImageLoader();
virtual ~cImageLoader();
cImage *CreateImage(int width, int height, bool preserveAspect = true);
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bool LoadImage(std::string Path, std::string FileName, std::string Extension);
bool LoadImage(const char *fullpath);
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};
#endif //__NOPACITY_IMAGELOADER_H