AsyncAudioContainerWav.h

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#ifndef ASYNC_AUDIO_CONTAINER_WAV_INCLUDED
#define ASYNC_AUDIO_CONTAINER_WAV_INCLUDED
 
 
/****************************************************************************
 *
 * System Includes
 *
 ****************************************************************************/
 
#include <sigc++/sigc++.h>
#include <cstring>
#include <cstdint>
 
 
/****************************************************************************
 *
 * Project Includes
 *
 ****************************************************************************/
 
#include <AsyncAudioContainer.h>
 
 
/****************************************************************************
 *
 * Local Includes
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Forward declarations
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Namespace
 *
 ****************************************************************************/
 
namespace Async
{
 
 
/****************************************************************************
 *
 * Forward declarations of classes inside of the declared namespace
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Defines & typedefs
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Exported Global Variables
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Class definitions
 *
 ****************************************************************************/
 
class AudioContainerWav : public AudioContainer
{
  public:
    static constexpr const char *OBJNAME = "wav";
 
    //struct Factory : public AudioContainerSpecificFactory<AudioContainerWav>
    //{
    //  Factory(void) : AudioContainerSpecificFactory<AudioContainerWav>("wav") {}
    //};
 
    AudioContainerWav(void);
 
    virtual ~AudioContainerWav(void);
 
    virtual const char* mediaType(void) const { return "audio/wav"; }
 
    virtual const char* filenameExtension(void) const { return "wav"; }
 
    virtual int writeSamples(const float *samples, int count);
 
    virtual void flushSamples(void);
 
    virtual void setRealtime(void) { m_realtime = true; }
 
    virtual size_t headerSize(void) const { return WAVE_HEADER_SIZE; }
 
    virtual const char* header(void);
 
  private:
    static const size_t WAVE_HEADER_SIZE  = 44;
    static const size_t NUM_CHANNELS      = 1;
 
    char      m_wave_header[WAVE_HEADER_SIZE];
    int       m_sample_rate     = INTERNAL_SAMPLE_RATE;
    size_t    m_samples_written = 0;
    size_t    m_block_size      = sizeof(int16_t)*INTERNAL_SAMPLE_RATE / 10;
    char*     m_block           = nullptr;
    char*     m_block_ptr       = nullptr;
    bool      m_realtime        = false;
 
    AudioContainerWav(const AudioContainerWav&);
    AudioContainerWav& operator=(const AudioContainerWav&);
 
    size_t storeBuf(char *ptr, const char* buf, size_t len)
    {
      std::memcpy(ptr, buf, len);
      return len;
    }
 
    size_t store32bitValue(char *ptr, uint32_t val)
    {
      *ptr++ = val & 0xff;
      val >>= 8;
      *ptr++ = val & 0xff;
      val >>= 8;
      *ptr++ = val & 0xff;
      val >>= 8;
      *ptr++ = val & 0xff;
      return 4;
    }
 
    size_t store16bitValue(char *ptr, uint16_t val)
    {
      *ptr++ = val & 0xff;
      val >>= 8;
      *ptr++ = val & 0xff;
      return 2;
    }
};  /* class AudioContainerWav */
 
 
} /* namespace */
 
#endif /* ASYNC_AUDIO_CONTAINER_WAV_INCLUDED */
 
/*
 * This file has not been truncated
 */