# glimagetype.h File Reference

/* This file is part of FineFramework project */
#ifndef FFW_GRAPHICS_IMAGE_TYPE
#define FFW_GRAPHICS_IMAGE_TYPE

#include "glrenderextensions.h"

namespace ffw {
#ifdef FFW_MEDIA_IMAGE_BUFFER

    class OpenGLImageType {
    public:
        inline OpenGLImageType() :
            internalFormat(0),
            format(0),
            type(0) {
        }
        inline OpenGLImageType(const GLint inter, const GLenum form, const GLenum typ) :
            internalFormat(inter),
            format(form),
            type(typ) {
        }
        const GLint internalFormat;
        const GLenum format;
        const GLenum type;
        inline operator bool() const {
            return (internalFormat != 0 && format != 0 && type != 0);
        }
    };
    inline OpenGLImageType getOpenGLImageType(ImageType type) {
        switch (type) {
        case ImageType::GRAYSCALE_8: {
            return OpenGLImageType(GL_LUMINANCE8, GL_LUMINANCE, GL_UNSIGNED_BYTE);
        };
        case ImageType::GRAYSCALE_16: {
            return OpenGLImageType(GL_LUMINANCE16, GL_LUMINANCE, GL_UNSIGNED_SHORT);
        };
        case ImageType::GRAYSCALE_16F: {
            return OpenGLImageType(GL_R16F, GL_LUMINANCE, GL_HALF_FLOAT);
        };
        case ImageType::GRAYSCALE_32F: {
            return OpenGLImageType(GL_RED, GL_RED, GL_FLOAT);
        };
        case ImageType::GRAYSCALE_ALPHA_8: {
            return OpenGLImageType(GL_LUMINANCE8_ALPHA8, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE);
        };
        case ImageType::GRAYSCALE_ALPHA_16: {
            return OpenGLImageType(GL_LUMINANCE16_ALPHA16, GL_LUMINANCE_ALPHA, GL_UNSIGNED_SHORT);
        };
        case ImageType::GRAYSCALE_ALPHA_16F: {
            return OpenGLImageType(GL_RG16F, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT);
        };
        case ImageType::RG_1616: {
            return OpenGLImageType(GL_RG16, GL_RG, GL_UNSIGNED_SHORT);
        };
        case ImageType::RG_1616F: {
            return OpenGLImageType(GL_RG16F, GL_RG, GL_HALF_FLOAT);
        };
        case ImageType::RGB_ALPHA_5551: {
            return OpenGLImageType(GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1);
        };
        case ImageType::RGB_ALPHA_4444: {
            return OpenGLImageType(GL_RGBA4, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4);
        };
        case ImageType::RGB_565: {
            return OpenGLImageType(GL_RGB565, GL_RGB, GL_UNSIGNED_SHORT_5_6_5);
        };
        case ImageType::RGB_888: {
            return OpenGLImageType(GL_RGB8, GL_RGB, GL_UNSIGNED_BYTE);
        };
        case ImageType::RGB_161616: {
            return OpenGLImageType(GL_RGB16, GL_RGB, GL_UNSIGNED_SHORT);
        };
        case ImageType::RGB_161616F: {
            return OpenGLImageType(GL_RGB16F, GL_RGB, GL_HALF_FLOAT);
        };
        case ImageType::RGB_323232F: {
            return OpenGLImageType(GL_RGB32F, GL_RGB, GL_FLOAT);
        };
        case ImageType::RGB_ALPHA_8888: {
            return OpenGLImageType(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE);
        };
        case ImageType::RGB_ALPHA_16161616: {
            return OpenGLImageType(GL_RGBA16, GL_RGBA, GL_UNSIGNED_SHORT);
        };
        case ImageType::RGB_ALPHA_16161616F: {
            return OpenGLImageType(GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT);
        };
        case ImageType::RGB_ALPHA_32323232F: {
            return OpenGLImageType(GL_RGBA32F, GL_RGBA, GL_FLOAT);
        };
        case ImageType::RGB_DXT1: {
            return OpenGLImageType(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_RGB, GL_UNSIGNED_BYTE);
        };
        case ImageType::RGB_ALPHA_DXT3: {
            return OpenGLImageType(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_RGBA, GL_UNSIGNED_BYTE);
        };
        case ImageType::RGB_ALPHA_DXT5: {
            return OpenGLImageType(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_BYTE);
        };
        case ImageType::RED_RGTC1: {
            return OpenGLImageType(GL_COMPRESSED_RED_RGTC1, GL_R, GL_UNSIGNED_BYTE);
        };
        case ImageType::RED_GREEN_RGTC2: {
            return OpenGLImageType(GL_COMPRESSED_RG_RGTC2, GL_RG, GL_UNSIGNED_BYTE);
        };
        case ImageType::SIGNED_RED_RGTC1: {
            return OpenGLImageType(GL_COMPRESSED_SIGNED_RED_RGTC1, GL_R, GL_UNSIGNED_BYTE);
        };
        case ImageType::SIGNED_RED_GREEN_RGTC2: {
            return OpenGLImageType(GL_COMPRESSED_SIGNED_RG_RGTC2, GL_RG, GL_UNSIGNED_BYTE);
        };
        default: return OpenGLImageType();
        };
    }
#endif
}

#endif