AVChannelLayoutWrapper.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  AVChannelLayoutWrapper.h
 
  Dmitry Vedenko
 
**********************************************************************/
#pragma once
 
// Channel layout was introduced earlier, but we must use it starting from 59
#define HAS_AV_CHANNEL_LAYOUT (LIBAVUTIL_VERSION_MAJOR >= 59)
 
#include <cstdint>
#include <memory>
 
typedef struct AVChannelLayout AVChannelLayout;
 
class AVChannelLayoutWrapper
{
public:
   virtual ~AVChannelLayoutWrapper() = default;
 
   virtual uint64_t GetLegacyChannelLayout() const noexcept = 0;
   virtual int GetChannelsCount() const noexcept = 0;
 
   virtual const AVChannelLayout* GetChannelLayout() const noexcept = 0;
 
   virtual std::unique_ptr<AVChannelLayoutWrapper> Clone() const = 0;
}; // class AVChannelLayoutWrapper