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#ifndef INCLUDED_AUDIOIO_BUFFERED_H
#define INCLUDED_AUDIOIO_BUFFERED_H
#include "audioio.h"
class SAMPLE_BUFFER;
/**
* A lower level interface for audio I/O objects. Derived classes
* must implement routines for reading and/or writing buffers of raw data.
*/
class AUDIO_IO_BUFFERED : public AUDIO_IO {
public:
virtual ~AUDIO_IO_BUFFERED(void);
AUDIO_IO_BUFFERED(void);
virtual void read_buffer(SAMPLE_BUFFER* sbuf);
virtual void write_buffer(SAMPLE_BUFFER* sbuf);
virtual void set_buffersize(long int samples);
virtual long int buffersize(void) const { return(buffersize_rep); }
/**
* Low-level routine for reading samples. Number of read sample
* frames is returned. This must be implemented by all subclasses.
*/
virtual long int read_samples(void* target_buffer, long int sample_frames) = 0;
/**
* Low-level routine for writing samples. This must be implemented
* by all subclasses.
*/
virtual void write_samples(void* target_buffer, long int sample_frames) = 0;
/** @name Reimplemented functions from ECA_AUDIO_FORMAT */
/*@{*/
virtual void set_channels(SAMPLE_SPECS::channel_t v);
virtual void set_sample_format(Sample_format v) throw(ECA_ERROR&);
/*@{*/
protected:
void reserve_buffer_space(long int bytes);
unsigned char* get_iobuf(void) const { return(iobuf_uchar_repp); }
size_t get_iobuf_size(void) const { return(iobuf_size_rep); }
private:
long int buffersize_rep;
unsigned char* iobuf_uchar_repp; // buffer for raw-I/O
size_t iobuf_size_rep;
};
#endif // INCLUDED_AUDIO_IO_BUFFERED
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