support for NyquistIO loading from buffer (if the decoder supports it)

include/libnyquist/AudioDecoder.h

@@ -64,6 +64,7 @@ public:
     ~NyquistIO();
     
     int Load(AudioData * data, const std::string & path);
+	int Load(AudioData *data, std::string extension, std::vector<uint8_t> & buffer);
     
     bool IsFileSupported(const std::string path) const;
     

src/AudioDecoder.cpp

@@ -74,6 +74,35 @@ int NyquistIO::Load(AudioData * data, const std::string & path)
     return IOError::UnknownError;
 }
 
+int NyquistIO::Load(AudioData *data, std::string extension, std::vector<uint8_t> & buffer)
+{
+	if (decoderTable.find(extension) == decoderTable.end())
+    {
+         return IOError::ExtensionNotSupported;
+    }
+
+	if (decoderTable.size() > 0)
+	{
+		auto decoder = GetDecoderForExtension(extension);
+            
+		try
+		{
+			return decoder->LoadFromBuffer(data, buffer);
+		}
+		catch (std::exception e)
+		{
+			std::cerr << "Caught fatal exception: " << e.what() << std::endl;
+		}
+	} 
+	else 
+	{
+		return IOError::NoDecodersLoaded;
+	}
+
+    // Should never be reached
+    return IOError::UnknownError;
+}
+
 bool NyquistIO::IsFileSupported(const std::string path) const
 {
     auto fileExtension = ParsePathForExtension(path);