videovisual.h

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#ifndef VIDEOVISUAL_H
#define VIDEOVISUAL_H

#include "stdint.h"

#include <QRect>
#include <QList>
#include <QDateTime>

#include "mythlogging.h"
#include "visual.h"
#include "mythrender_base.h"
#include "mythpainter.h"
#include "videovisualdefs.h"

#define DESC QString("Visualiser: ")

class MythRender;
class AudioPlayer;

class VisualNode
{
  public:
    VisualNode(short *l, short *r, unsigned long n, unsigned long o)
        : left(l), right(r), length(n), offset(o) { }

    ~VisualNode()
    {
        delete [] left;
        delete [] right;
    }

    short *left, *right;
    long length, offset;
};

class VideoVisual : public MythTV::Visual
{
  public:
    static bool CanVisualise(AudioPlayer *audio, MythRender *render);
    static VideoVisual* Create(const QString &name,
                               AudioPlayer *audio, MythRender *render);
    static QStringList GetVisualiserList(RenderType type);

    VideoVisual(AudioPlayer *audio, MythRender *render);
   ~VideoVisual();

    virtual void Draw(const QRect &area, MythPainter *painter,
                      QPaintDevice* device) = 0;
    virtual QString Name(void) = 0;

    virtual void add(uchar *b, unsigned long b_len, unsigned long w, int c, int p);
    virtual void prepare();

  protected:
    VisualNode* GetNode(void);
    void DeleteNodes(void);
    int64_t SetLastUpdate(void);

    AudioPlayer       *m_audio;
    bool               m_disabled;
    QRect              m_area;
    MythRender        *m_render;
    QList<VisualNode*> m_nodes;
    QDateTime          m_lastUpdate;
};

class VideoVisualFactory
{
  public:
    VideoVisualFactory()
    {
        m_nextVideoVisualFactory = g_videoVisualFactory;
        g_videoVisualFactory = this;
    }
    virtual ~VideoVisualFactory() { }
    virtual const QString &name(void) const = 0;
    virtual VideoVisual* Create(AudioPlayer *audio,
                                MythRender *render) const = 0;
    static VideoVisualFactory* VideoVisualFactories()
    {
        return g_videoVisualFactory;
    }
    VideoVisualFactory* next() const
    {
        return m_nextVideoVisualFactory;
    }
    virtual bool SupportedRenderer(RenderType type) = 0;

  protected:
    static VideoVisualFactory* g_videoVisualFactory;
    VideoVisualFactory*        m_nextVideoVisualFactory;
};
#endif // VIDEOVISUAL_H

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