AVDictionaryWrapper.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  AVDictionaryWrapper.h
 
  Dmitry Vedenko
 
**********************************************************************/
 
#pragma once
 
#include <string_view>
#include <string>
#include <wx/string.h>
 
struct FFmpegFunctions;
typedef struct AVDictionary AVDictionary;
 
#define DICT_MATCH_CASE 1
#define DICT_IGNORE_SUFFIX 2
 
class FFMPEG_SUPPORT_API AVDictionaryWrapper
{
public:
   AVDictionaryWrapper(const AVDictionaryWrapper& rhs) noexcept;
   AVDictionaryWrapper(AVDictionaryWrapper&& rhs) noexcept;
 
   // We expect that &mFFmpeg == rhs.mFFmpeg
   AVDictionaryWrapper& operator=(const AVDictionaryWrapper& rhs) noexcept;
   AVDictionaryWrapper& operator=(AVDictionaryWrapper&& rhs) noexcept;
 
   explicit AVDictionaryWrapper(const FFmpegFunctions& ffmpeg) noexcept;
   explicit AVDictionaryWrapper(const FFmpegFunctions& ffmpeg, AVDictionary* rhs) noexcept;
 
   AVDictionary* GetWrappedValue() noexcept;
   const AVDictionary* GetWrappedValue() const noexcept;
 
   virtual ~AVDictionaryWrapper();
 
   void Set(const std::string_view& key, const std::string& value, int flags = 0) noexcept;
   void Set(const std::string_view& key, const wxString& value, int flags = 0) noexcept;
   void Set(const std::string_view& key, const char* value, int flags = 0) noexcept;
 
   template<typename T>
   void Set(const std::string_view& key, const T& value, int flags = 0) noexcept
   {
      Set(key, std::to_string(value), flags);
   }
 
   std::string_view Get(const std::string_view& key, const std::string_view& defaultValue, int flags = 0) const;
   bool HasValue(const std::string_view& key, int flags = 0) const noexcept;
 
   AVDictionary* Release() noexcept;
protected:
   const FFmpegFunctions& mFFmpeg;
   AVDictionary* mAVDictionary { nullptr };
};