Diff: SlideShow/Renderer.h

Revision:

5:f4de114c31c3

Child:

13:bff2288c2c61

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SlideShow/Renderer.h	Sun Dec 21 13:53:07 2014 +0100
@@ -0,0 +1,104 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include "rtos.h"
+//#include "LcdController.h"
+//#include "EaLcdBoard.h"
+#include "Display.h"
+
+class Renderer {
+public:
+
+    Renderer(/*LcdController::Config* screen, EaLcdBoard* lcdBoard*/);
+    ~Renderer();
+
+    /** Specifies a part of a layer
+     *
+     *  Returns a handle to pass when updating the framebuffer.
+     *
+     *  @param layer  0 is the bottom of the stack, higher number is on top
+     *  @param xoff   top left corner of the drawing rectangle
+     *  @param yoff   top left corner of the drawing rectangle
+     *  @param width  width of the drawing rectangle
+     *  @param height height of the drawing rectangle
+     *
+     *  @returns
+     *       handle to pass to setFrameBuffer function
+     *       0 on failure
+     */
+    uint32_t registerUser(int layer, int xoff, int yoff, int width, int height);
+    uint32_t registerFullscreenUser(int layer);
+
+    /** Removes the item from the renderer
+     *
+     *  @param handle the handle returned in the registerUser() call
+     */
+    void unregisterUser(uint32_t handle);
+
+    /** Informs the renderer that there is new data to use
+     *
+     * Blocks until the data has been register. After that point the
+     * data must not be modified until another call to setFramebuffer.
+     *
+     *  @param handle the handle returned in the registerUser() call
+     *  @param data   the image data
+     */
+    void setFramebuffer(uint32_t handle, const uint16_t* data);
+
+    void setRenderThread(Thread* renderThread) { t = renderThread; }
+
+    /** Run the renderer
+     *
+     * Should be called from a high priority thread.
+     */
+    void render();
+
+private:
+
+    enum Constants {
+      MaxNumLayers = 10,
+    };
+
+    typedef uint16_t* image_t;
+
+    typedef struct {
+      bool used;
+      int x0;
+      int y0;
+      int x1;
+      int y1;
+      int width;
+      int clippedHeight;
+      int zorder;
+      int signalId;
+      bool fullscreen;
+      const uint16_t* newData;
+      const uint16_t* activeData;
+      uint16_t* tmp;
+      Mutex* lock;
+    } layerinfo_t;
+
+    layerinfo_t layers[MaxNumLayers];
+    layerinfo_t* order[MaxNumLayers];
+
+    int numRegisteredLayers;
+
+    Thread* t;
+    Mutex setupMutex;
+
+    int screenWidth;
+    int screenHeight;
+    int screenPixels;
+    int screenBytes;
+    int activeBackBuffer;
+
+    image_t ImageBackBuffer[2];
+
+    //EaLcdBoard* board;
+    Display* display;
+};
+
+#endif
+
+
+