Add nvtt plain C wrapper.

src/nvtt/nvtt_wrapper.cpp

@@ -0,0 +1,86 @@
+
+
+
+// Input Options
+NvttInputOptions nvttCreateInputOptions()
+{
+	return (NvttInputOptions *) new nvtt::InputOptions();
+}
+
+void nvttDestroyInputOptions(NvttInputOptions inputOptions)
+{
+	delete (nvtt::InputOptions *) inputOptions;
+}
+
+void nvttSetInputOptionsTextureLayout(NvttInputOptions inputOptions, NvttTextureType type, int w, int h, int d)
+{
+	((nvtt::InputOptions *)inputOptions)->setTextureLayout(type, w, h, d);
+}
+
+void nvttResetInputOptionsTextureLayout(NvttInputOptions inputOptions)
+{
+	((nvtt::InputOptions *)inputOptions)->resetTextureLayout();
+}
+
+NvttBoolean nvttSetInputOptionsMipmapData(NvttInputOptions inputOptions, const void * data, int w, int h, int d, int face, int mipmap)
+{
+	return ((nvtt::InputOptions *)inputOptions)->setMipmapData(data, w, h, d, face, mipmap);
+}
+
+
+// Compression Options
+NvttCompressionOptions nvttCreateCompressionOptions()
+{
+	return (NvttCompressionOptions *) new nvtt::CompressionOptions();
+}
+
+void nvttDestroyCompressionOptions(NvttCompressionOptions compressionOptions)
+{
+	delete (nvtt::CompressionOptions *) compressionOptions;
+}
+
+void nvttSetCompressionOptionsFormat(NvttCompressionOptions compressionOptions, NvttFormat format)
+{
+	((nvtt::CompressionOptions *)compressionOptions)->setFormat(format);
+}
+
+void nvttSetCompressionOptionsQuality(NvttCompressionOptions compressionOptionso, NvttQuality quality)
+{
+	((nvtt::CompressionOptions *)compressionOptions)->setQuality(quality);
+}
+
+void nvttSetCompressionOptionsPixelFormat(unsigned int bitcount, unsigned int rmask, unsigned int gmask, unsigned int bmask, unsigned int amask)
+{
+	((nvtt::CompressionOptions *)compressionOptions)->setPixelFormat(bitcount, rmask, gmask, bmask, amask);
+}
+	
+
+// Output Options
+NvttOutputOptions nvttCreateOutputOptions()
+{
+	return (NvttOutputOptions *) new nvtt::OutputOptions();
+}
+
+void nvttDestroyOutputOptions(NvttOutputOptions outputOptions)
+{
+	delete (nvtt::OutputOptions *) outputOptions;
+}
+
+void nvttSetOutputOptionsFileName(NvttOutputOptions outputOptions, const char * fileName)
+{
+	((nvtt::OutputOptions *)outputOptions)->setFileName(fileName);
+}
+
+
+// Main entrypoint of the compression library.
+NvttBoolean nvttCompress(NvttInputOptions inputOptions, NvttOutputOptions outputOptions, NvttCompressionOptions compressionOptions)
+{
+	return nvtt::compress((nvtt::InputOptions *)inputOptions, (nvtt::OutputOptions *)outputOptions, (nvtt::CompressionOptions *)compressionOptions);
+}
+
+// Estimate the size of compressing the input with the given options.
+int nvttEstimateSize(NvttInputOptions inputOptions, NvttCompressionOptions compressionOptions)
+{
+	return nvtt::estimateSize((nvtt::InputOptions *)inputOptions, (nvtt::CompressionOptions *)compressionOptions);
+}
+