BansheeEngine/Source/BansheeOpenAudio/Include/BsOAFLACReader.h

//********************************** Banshee Engine (www.banshee3d.com) **************************************************//
//**************** Copyright (c) 2016 Marko Pintera ([email protected]). All rights reserved. **********************//
#pragma once

#include "BsOAPrerequisites.h"
#include "FLAC\stream_decoder.h"

namespace BansheeEngine
{
	/** @addtogroup OpenAudio
	 *  @{
	 */

	struct FLACDecoderData
	{
		SPtr<DataStream> stream;
		AudioFileInfo info;
		UINT8* output = nullptr;
		Vector<UINT8> overflow;
		UINT32 overflowBytesPerSample = 0;
		UINT32 samplesToRead = 0;
		bool error = false;
	};

	/** Used for reading FLAC audio files. */
	class OAFLACReader
	{
	public:
		OAFLACReader();
		~OAFLACReader();

		bool open(const SPtr<DataStream>& stream, AudioFileInfo& info);
		void seek(UINT32 offset); // Offset in number of samples
		UINT32 read(UINT8* samples, UINT32 numSamples);

		static bool isValid(const SPtr<DataStream>& stream);
	private:
		void close();

		FLAC__StreamDecoder* mDecoder;
		FLACDecoderData mData;
	};

	/** @} */
}