hybris/egl/platforms/hwcomposer/hwcomposer_window.h

   1 /*
   2  * Copyright (C) 2013 libhybris
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef FBDEV_WINDOW_H
  18 #define FBDEV_WINDOW_H
  19
  20 #include "nativewindowbase.h"
  21 #include <linux/fb.h>
  22 #include <android/hardware/gralloc.h>
  23
  24 #include <list>
  25
  26
  27 class HWComposerNativeWindowBuffer : public BaseNativeWindowBuffer {
  28 friend class HWComposerNativeWindow;
  29
  30 protected:
  31     HWComposerNativeWindowBuffer(alloc_device_t* alloc,
  32                             unsigned int width,
  33                             unsigned int height,
  34                             unsigned int format,
  35                             unsigned int usage) ;
  36    virtual ~HWComposerNativeWindowBuffer() ;
  37
  38 protected:
  39     int busy;
  40     int fenceFd;
  41     int status;
  42     alloc_device_t* m_alloc;
  43 };
  44
  45
  46 class HWComposerNativeWindow : public BaseNativeWindow {
  47 public:
  48     HWComposerNativeWindow(unsigned int width, unsigned int height, unsigned int format);
  49     ~HWComposerNativeWindow();
  50     void setup(gralloc_module_t* gralloc, alloc_device_t* alloc);
  51
  52
  53     void lockFrontBuffer(HWComposerNativeWindowBuffer **buffer);
  54     void unlockFrontBuffer(HWComposerNativeWindowBuffer *buffer);
  55
  56 protected:
  57     // overloads from BaseNativeWindow
  58     virtual int setSwapInterval(int interval);
  59
  60     virtual int dequeueBuffer(BaseNativeWindowBuffer** buffer, int* fenceFd);
  61     virtual int queueBuffer(BaseNativeWindowBuffer* buffer, int fenceFd);
  62     virtual int cancelBuffer(BaseNativeWindowBuffer* buffer, int fenceFd);
  63     virtual int lockBuffer(BaseNativeWindowBuffer* buffer);
  64
  65     virtual unsigned int type() const;
  66     virtual unsigned int width() const;
  67     virtual unsigned int height() const;
  68     virtual unsigned int format() const;
  69     virtual unsigned int defaultWidth() const;
  70     virtual unsigned int defaultHeight() const;
  71     virtual unsigned int queueLength() const;
  72     virtual unsigned int transformHint() const;
  73     // perform calls
  74     virtual int setUsage(int usage);
  75     virtual int setBuffersFormat(int format);
  76     virtual int setBuffersDimensions(int width, int height);
  77     virtual int setBufferCount(int cnt);
  78
  79 private:
  80     void destroyBuffers();
  81
  82 private:
  83     framebuffer_device_t* m_fbDev;
  84     alloc_device_t* m_alloc;
  85     unsigned int m_usage;
  86     unsigned int m_bufFormat;
  87     int m_freeBufs;
  88     std::list<HWComposerNativeWindowBuffer*> m_bufList;
  89     HWComposerNativeWindowBuffer* m_frontBuf;
  90
  91     int m_width;
  92     int m_height;
  93
  94 };
  95
  96 #endif
  97 // vim: noai:ts=4:sw=4:ss=4:expandtab