AVFrameWrapper.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  AVFrameWrapper.h
 
  Dmitry Vedenko
 
**********************************************************************/
 
#pragma once
 
#include <cstdint>
#include <memory>
 
#include "FFmpegTypes.h"
 
class AVChannelLayoutWrapper;
 
struct FFmpegFunctions;
class AVDictionaryWrapper;
typedef struct AVFrame AVFrame;
 
#define FF_DECODE_ERROR_INVALID_BITSTREAM 1
#define FF_DECODE_ERROR_MISSING_REFERENCE 2
 
class FFMPEG_SUPPORT_API AVFrameWrapper
{
public:
   AVFrameWrapper(const AVFrameWrapper&) = delete;
   AVFrameWrapper& operator=(AVFrameWrapper&) = delete;
 
   AVFrameWrapper(AVFrameWrapper&&) = delete;
   AVFrameWrapper& operator=(AVFrameWrapper&&) = delete;
 
   explicit AVFrameWrapper(const FFmpegFunctions& ffmpeg) noexcept;
 
   AVFrame* GetWrappedValue() noexcept;
   const AVFrame* GetWrappedValue() const noexcept;
 
   virtual ~AVFrameWrapper();
 
   virtual int GetNumDataPointers() const noexcept = 0;
   virtual uint8_t* GetData(int index) const noexcept = 0;
   virtual int GetLineSize(int index) const noexcept = 0;
   virtual uint8_t* GetExtendedData(int index) const noexcept = 0;
 
   virtual int GetWidth() const noexcept = 0;
   virtual int GetHeight() const noexcept = 0;
 
   virtual int GetSamplesCount() const noexcept = 0;
   virtual void SetSamplesCount(int count) noexcept = 0;
 
   virtual AVSampleFormatFwd GetFormat() const noexcept = 0;
   virtual void SetFormat(AVSampleFormatFwd format) noexcept = 0;
 
   virtual int GetKeyFrame() const noexcept = 0;
 
   virtual AudacityAVRational GetSampleAspectRatio() const noexcept = 0;
   virtual int64_t GetPresentationTimestamp() const noexcept = 0;
   virtual int64_t GetPacketPresentationTimestamp() const noexcept = 0;
   virtual int64_t GetPacketDecompressionTimestamp() const noexcept = 0;
 
   virtual int GetQuality() const noexcept = 0;
 
   virtual void* GetOpaque() const noexcept = 0;
   virtual void SetOpaque(void *opaque) noexcept = 0;
 
   virtual int GetRepeatPict() const noexcept = 0;
   virtual int GetInterlacedFrame() const noexcept = 0;
   virtual int GetTopFieldFirst() const noexcept = 0;
   virtual int GetPaletteHasChanged() const noexcept = 0;
   virtual int GetSampleRate() const noexcept = 0;
 
   virtual const AVChannelLayoutWrapper* GetChannelLayout() const noexcept = 0;
   virtual void  SetChannelLayout(const AVChannelLayoutWrapper* layout) noexcept = 0;
 
   virtual int GetSideDataCount() const noexcept = 0;
   virtual int GetFlags() const noexcept = 0;
   virtual int64_t GetBestEffortTimestamp() const noexcept = 0;
   virtual AVDictionaryWrapper GetMetadata() const noexcept = 0;
   virtual int GetDecodeErrorFlags() const noexcept = 0;
   virtual int GetChannels() const noexcept = 0;
   virtual int GetPacketSize() const noexcept = 0;
protected:
   const FFmpegFunctions& mFFmpeg;
   AVFrame* mAVFrame { nullptr };
 
   std::unique_ptr<AVChannelLayoutWrapper> mChannelLayoutWrapper;
};