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41 
42 #ifndef QEGLFSKMSVSP2SCREEN_H
43 #define QEGLFSKMSVSP2SCREEN_H
44 
45 #include "qeglfskmsscreen.h"
46 #include "qvsp2blendingdevice.h"
47 #include <QtCore/QMutex>
48 
49 #include <gbm.h>
50 
51 QT_BEGIN_NAMESPACE
52 
53 class QEglFSKmsVsp2Screen : public QEglFSKmsScreen
54 {
55 public:
56     QEglFSKmsVsp2Screen(QEglFSKmsDevice *device, const QKmsOutput &output);
57 
58     gbm_surface *createSurface();
59     void resetSurface();
60 
61     void initDumbFrameBuffers();
62     void initVsp2();
63     void initQtLayer();
64 
65     //TODO: use a fixed index API instead of auto increment?
66     int addLayer(int dmabufFd, const QSize &size, const QPoint &position, uint drmPixelFormat, uint bytesPerLine);
67     void setLayerBuffer(int id, int dmabufFd);
68     void setLayerPosition(int id, const QPoint &position);
69     void setLayerAlpha(int id, qreal alpha);
70     bool removeLayer(int id);
71     void addBlendListener(void (*callback)());
72 
73     void flip();
74     void blendAndFlipDrm();
75 
76 private:
77     class Blender : public QObject // This is a workaround we really would want the screen to be a QObject
78     {
79     public:
Blender(QEglFSKmsVsp2Screen * screen)80         Blender(QEglFSKmsVsp2Screen *screen) : m_screen(screen) {}
~Blender()81         ~Blender() override {}
82         bool event(QEvent *event) override;
83         QEglFSKmsVsp2Screen *m_screen = nullptr;
84     };
85     QScopedArrayPointer<Blender> m_blender;
86 
87     gbm_surface *m_gbmSurface = nullptr;
88     gbm_bo *m_currentGbmBo = nullptr;
89     gbm_bo *m_nextGbmBo = nullptr;
90 
91     QScopedPointer<QVsp2BlendingDevice> m_blendDevice;
92 
93     struct FrameBuffer { //these are for buffers that have been blended by the bru
94         uint32_t drmBufferId = 0;
95         int dmabufFd = -1;
96     };
97     std::array<FrameBuffer, 2> m_frameBuffers;
98     uint m_backFb = 0;
99     void initDumbFrameBuffer(FrameBuffer &fb);
100     QVector<void (*)()> m_blendFinishedCallbacks;
101 
102     struct DmaBuffer { //these are for qt buffers before blending with additional layers (gbm buffer data)
103         int dmabufFd = -1;
104     };
105     static void dmaBufferDestroyedHandler(gbm_bo *gbmBo, void *data);
106     DmaBuffer *dmaBufferForGbmBuffer(gbm_bo *gbmBo);
107 
108     void ensureModeSet();
109     void doDrmFlip();
110 
111     bool m_blendScheduled = false;
112     int m_qtLayer = 0; //TODO: add API for changing this
113 };
114 
115 QT_END_NAMESPACE
116 
117 #endif // QEGLFSKMSVSP2SCREEN_H
118