AudioIOSequences.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  AudioIOSequences.h
 
  Paul Licameli
 
  @brief interfaces for playable and recordable sample channel groups
 
**********************************************************************/
#ifndef __AUDACITY_AUDIO_IO_SEQUENCES__
#define __AUDACITY_AUDIO_IO_SEQUENCES__
 
#include "WideSampleSequence.h"
class ChannelGroup;
 
struct MIXER_API PlayableSequence
   // TODO wide wave tracks -- remove virtual
   : virtual WideSampleSequence
{
   ~PlayableSequence() override;
 
   virtual const ChannelGroup *FindChannelGroup() const = 0;
 
   virtual bool GetSolo() const = 0;
 
   virtual bool GetMute() const = 0;
};
 
using ConstPlayableSequences =
   std::vector<std::shared_ptr<const PlayableSequence>>;
 
struct MIXER_API RecordableSequence {
   virtual ~RecordableSequence();
   virtual sampleFormat GetSampleFormat() const = 0;
   virtual double GetRate() const = 0;
 
 
   virtual size_t NChannels() const = 0;
 
   virtual bool Append(
      constSamplePtr buffer, sampleFormat format,
      size_t len,
      unsigned int stride,
      sampleFormat effectiveFormat, 
      size_t iChannel = 0
   ) = 0;
 
   inline bool Append(constSamplePtr buffer, sampleFormat format,
      size_t len, size_t iChannel = 0)
   {
      return Append(buffer, format, len, 1, widestSampleFormat, iChannel);
   }
 
   virtual bool IsLeader() const = 0;
 
 
   virtual void Flush() = 0;
 
   virtual void InsertSilence(double t, double len) = 0;
};
 
using RecordableSequences = std::vector<std::shared_ptr<RecordableSequence>>;
 
class MIXER_API OtherPlayableSequence
{
public:
   virtual ~OtherPlayableSequence();
};
 
#endif