54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
/** @file
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* @author Edouard DUPIN
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* @copyright 2011, Edouard DUPIN, all right reserved
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* @license APACHE v2.0 (see license file)
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*/
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#ifndef __AUDIO_DRAIN_ALGO_RESAMPLER_H__
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#define __AUDIO_DRAIN_ALGO_RESAMPLER_H__
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#include <audio/drain/Algo.h>
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#ifdef HAVE_SPEEX_DSP_RESAMPLE
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#include <speex/speex_resampler.h>
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#endif
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#include <etk/memory.h>
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namespace audio {
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namespace drain {
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// TODO: Manage change timestamp when pull mode
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// TODO: drain ...
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class Resampler : public audio::drain::Algo {
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private:
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#ifdef HAVE_SPEEX_DSP_RESAMPLE
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SpeexResamplerState* m_speexResampler;
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#endif
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size_t m_positionRead; //!< For residual data in the buffer last read number of chunk
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size_t m_positionWrite; //!< Current pointer of writing new output data of resampler
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protected:
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/**
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* @brief Constructor
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*/
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Resampler();
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void init();
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public:
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static std11::shared_ptr<audio::drain::Resampler> create();
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/**
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* @brief Destructor
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*/
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virtual ~Resampler();
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protected:
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virtual void configurationChange();
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public:
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virtual bool process(audio::Time& _time,
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void* _input,
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size_t _inputNbChunk,
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void*& _output,
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size_t& _outputNbChunk);
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private:
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audio::Duration m_residualTimeInResampler; //!< the time of data locked in the resampler ...
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};
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}
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}
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#endif
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