AsyncAudioRecorder.h

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#ifndef ASYNC_AUDIO_RECORDER_INCLUDED
#define ASYNC_AUDIO_RECORDER_INCLUDED
 
 
/****************************************************************************
 *
 * System Includes
 *
 ****************************************************************************/
 
#include <stdio.h>
#include <stdint.h>
#include <sigc++/sigc++.h>
#include <sys/time.h>
 
#include <string>
 
#include <AsyncAudioSink.h>
 
 
/****************************************************************************
 *
 * Project Includes
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Local Includes
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Forward declarations
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Namespace
 *
 ****************************************************************************/
 
namespace Async
{
 
 
/****************************************************************************
 *
 * Forward declarations of classes inside of the declared namespace
 *
 ****************************************************************************/
 
  
 
/****************************************************************************
 *
 * Defines & typedefs
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Exported Global Variables
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Class definitions
 *
 ****************************************************************************/
 
class AudioRecorder : public Async::AudioSink
{
  public:
    typedef enum { FMT_AUTO, FMT_RAW, FMT_WAV } Format;
    
    explicit AudioRecorder(const std::string& filename,
                           AudioRecorder::Format fmt=FMT_AUTO,
                           int sample_rate=INTERNAL_SAMPLE_RATE);
  
    ~AudioRecorder(void);
  
    bool initialize(void);
    
    void setMaxRecordingTime(unsigned time_ms, unsigned hw_time_ms=0);
    
    bool closeFile(void);
 
    unsigned samplesWritten(void) const { return samples_written; }
 
    const struct timeval &beginTimestamp(void) const { return begin_timestamp; }
 
    const struct timeval &endTimestamp(void) const { return end_timestamp; }
 
    virtual int writeSamples(const float *samples, int count);
    
    virtual void flushSamples(void);
 
    std::string errorMsg(void) const { return errmsg; }
 
    sigc::signal<void> maxRecordingTimeReached;
 
    sigc::signal<void> errorOccurred;
 
  private:
    std::string     filename;
    FILE            *file;
    unsigned        samples_written;
    Format          format;
    int             sample_rate;
    unsigned        max_samples;
    unsigned        high_water_mark;
    bool            high_water_mark_reached;
    struct timeval  begin_timestamp;
    struct timeval  end_timestamp;
    std::string     errmsg;
    
    AudioRecorder(const AudioRecorder&);
    AudioRecorder& operator=(const AudioRecorder&);
    bool writeWaveHeader(void);
    int store32bitValue(char *ptr, uint32_t val);
    int store16bitValue(char *ptr, uint16_t val);
    void setErrMsgFromErrno(const std::string &fname);
 
};  /* class AudioRecorder */
 
 
} /* namespace */
 
#endif /* ASYNC_AUDIO_RECORDER_INCLUDED */
 
 
 
/*
 * This file has not been truncated
 */