/** @file
 * @author Edouard DUPIN 
 * @copyright 2011, Edouard DUPIN, all right reserved
 * @license APACHE v2.0 (see license file)
 */

#ifndef __DRAIN_ALGO_ALGO_END_POINT_WRITE_H__
#define __DRAIN_ALGO_ALGO_END_POINT_WRITE_H__

#include <drain/EndPoint.h>
#include <etk/functional.h>
#include <etk/mutex.h>
#include <drain/CircularBuffer.h>

namespace drain{
	typedef std11::function<void (const std11::chrono::system_clock::time_point& _time,
	                              size_t _nbChunk,
	                              enum audio::format _format,
	                              uint32_t _frequency,
	                              const std::vector<audio::channel>& _map)> playbackFunctionWrite;
	class EndPointWrite : public EndPoint {
		private:
			drain::CircularBuffer m_buffer;
			playbackFunctionWrite m_function;
			std11::mutex m_mutex;
		protected:
			/**
			 * @brief Constructor
			 */
			EndPointWrite();
			void init();
		public:
			static std11::shared_ptr<EndPointWrite> create();
			/**
			 * @brief Destructor
			 */
			virtual ~EndPointWrite() {};
			virtual void configurationChange();
			virtual bool process(std11::chrono::system_clock::time_point& _time,
			                     void* _input,
			                     size_t _inputNbChunk,
			                     void*& _output,
			                     size_t& _outputNbChunk);
			virtual void write(const void* _value, size_t _nbChunk);
			virtual void setCallback(playbackFunctionWrite _function) {
				m_function = _function;
			}
		protected:
			std11::chrono::microseconds m_bufferSizeMicroseconds; // 0 if m_bufferSizeChunk != 0
			size_t m_bufferSizeChunk; // 0 if m_bufferSizeMicroseconds != 0
		public:
			/**
			 * @brief Set buffer size in chunk number
			 * @param[in] _nbChunk Number of chunk in the buffer
			 */
			virtual void setBufferSize(size_t _nbChunk);
			/**
			 * @brief Set buffer size size of the buffer with the stored time in µs
			 * @param[in] _time Time in microsecond of the buffer
			 */
			virtual void setBufferSize(const std11::chrono::microseconds& _time);
			/**
			 * @brief get buffer size in chunk number
			 * @return Number of chunk that can be written in the buffer
			 */
			virtual size_t getBufferSize();
			/**
			 * @brief Set buffer size size of the buffer with the stored time in µs
			 * @return Time in microsecond that can be written in the buffer
			 */
			virtual std11::chrono::microseconds getBufferSizeMicrosecond();
			/**
			 * @brief Get buffer size filled in chunk number
			 * @return Number of chunk in the buffer (that might be read/write)
			 */
			virtual size_t getBufferFillSize();
			/**
			 * @brief Set buffer size size of the buffer with the stored time in µs
			 * @return Time in microsecond of the buffer (that might be read/write)
			 */
			virtual std11::chrono::microseconds getBufferFillSizeMicrosecond();
	};
};

#endif