mythvaapicontext.h

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#ifndef MYTHVAAPICONTEXT_H
#define MYTHVAAPICONTEXT_H
 
// MythTV
#include "libmythtv/decoders/mythcodeccontext.h"
 
// VAAPI
#include "va/va.h"
 
// FFmpeg
extern "C" {
#include "libavutil/pixfmt.h"
#include "libavutil/hwcontext.h"
#include "libavcodec/avcodec.h"
#include "libavfilter/avfilter.h"
#include "libavformat/avformat.h"
#include "libavfilter/buffersrc.h"
}
 
using VAAPIProfile  = QPair<MythCodecContext::CodecProfile,QPair<QSize,QSize>>;
using VAAPIProfiles = QVector<VAAPIProfile>;
 
class MTV_PUBLIC MythVAAPIContext : public MythCodecContext
{
  public:
    MythVAAPIContext                     (DecoderBase* Parent, MythCodecID CodecID);
   ~MythVAAPIContext() override;
 
    void   InitVideoCodec                (AVCodecContext* Context, bool SelectedStream, bool& DirectRendering) override;
    bool   RetrieveFrame                 (AVCodecContext* Context, MythVideoFrame* Frame, AVFrame* AvFrame) override;
    int    FilteredReceiveFrame          (AVCodecContext* Context, AVFrame* Frame) override;
    void   PostProcessFrame              (AVCodecContext* Context, MythVideoFrame* Frame) override;
    bool   IsDeinterlacing               (bool& DoubleRate, bool StreamChange = false) override;
    bool   DecoderWillResetOnFlush       () override;
    bool   DecoderWillResetOnAspect      () override;
 
    static MythCodecID GetSupportedCodec (AVCodecContext** Context, const AVCodec** Codec,
                                          const QString&   Decoder, uint StreamType);
    static enum AVPixelFormat GetFormat  (AVCodecContext* Context, const AVPixelFormat* PixFmt);
    static enum AVPixelFormat GetFormat2 (AVCodecContext* Context, const AVPixelFormat* PixFmt);
    static QString HaveVAAPI             (bool ReCheck = false);
    static void GetDecoderList           (QStringList& Decoders);
 
  private:
    static int  InitialiseContext        (AVCodecContext* Context);
    static int  InitialiseContext2       (AVCodecContext* Context);
    static VAProfile VAAPIProfileForCodec(const AVCodecContext* Codec);
    static AVPixelFormat FramesFormat    (AVPixelFormat Format);
    void        DestroyDeinterlacer      ();
    static const VAAPIProfiles& GetProfiles();
 
    MythDeintType    m_deinterlacer      { DEINT_NONE };
    bool             m_deinterlacer2x    { false      };
    bool             m_lastInterlaced    { false };
    bool             m_lastTopFieldFirst { false };
    AVFilterContext* m_filterSink        { nullptr };
    AVFilterContext* m_filterSource      { nullptr };
    AVFilterGraph*   m_filterGraph       { nullptr };
    bool             m_filterError       { false   };
    AVBufferRef*     m_framesCtx         { nullptr };
    std::array<int64_t,2> m_filterPriorPTS { 0 };
    int64_t          m_filterPTSUsed     { 0 };
    int              m_filterWidth       { 0 };
    int              m_filterHeight      { 0 };
};
 
#endif