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      1 /*
      2 * Copyright (C) 2011 The Android Open Source Project
      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 #ifndef _LIBRENDER_FRAMEBUFFER_H
     17 #define _LIBRENDER_FRAMEBUFFER_H
     18 
     19 #include "libOpenglRender/render_api.h"
     20 #include "ColorBuffer.h"
     21 #include "RenderContext.h"
     22 #include "WindowSurface.h"
     23 #include "emugl/common/mutex.h"
     24 
     25 #include <map>
     26 #include <EGL/egl.h>
     27 #include <stdint.h>
     28 
     29 typedef uint32_t HandleType;
     30 struct ColorBufferRef {
     31     ColorBufferPtr cb;
     32     uint32_t refcount;  // number of client-side references
     33 };
     34 typedef std::map<HandleType, RenderContextPtr> RenderContextMap;
     35 typedef std::map<HandleType, WindowSurfacePtr> WindowSurfaceMap;
     36 typedef std::map<HandleType, ColorBufferRef> ColorBufferMap;
     37 
     38 struct FrameBufferCaps
     39 {
     40     bool hasGL2;
     41     bool has_eglimage_texture_2d;
     42     bool has_eglimage_renderbuffer;
     43     EGLint eglMajor;
     44     EGLint eglMinor;
     45 };
     46 
     47 class FrameBuffer
     48 {
     49 public:
     50     static bool initialize(int width, int height);
     51     static bool setupSubWindow(FBNativeWindowType p_window,
     52                                 int x, int y,
     53                                 int width, int height, float zRot);
     54     static bool removeSubWindow();
     55     static void finalize();
     56     static FrameBuffer *getFB() { return s_theFrameBuffer; }
     57 
     58     const FrameBufferCaps &getCaps() const { return m_caps; }
     59 
     60     int getWidth() const { return m_width; }
     61     int getHeight() const { return m_height; }
     62 
     63     void setPostCallback(OnPostFn onPost, void* onPostContext);
     64 
     65     void getGLStrings(const char** vendor, const char** renderer, const char** version) const {
     66         *vendor = m_glVendor;
     67         *renderer = m_glRenderer;
     68         *version = m_glVersion;
     69     }
     70 
     71     HandleType createRenderContext(int p_config, HandleType p_share, bool p_isGL2 = false);
     72     HandleType createWindowSurface(int p_config, int p_width, int p_height);
     73     HandleType createColorBuffer(int p_width, int p_height, GLenum p_internalFormat);
     74     void DestroyRenderContext(HandleType p_context);
     75     void DestroyWindowSurface(HandleType p_surface);
     76     int openColorBuffer(HandleType p_colorbuffer);
     77     void closeColorBuffer(HandleType p_colorbuffer);
     78 
     79     bool  bindContext(HandleType p_context, HandleType p_drawSurface, HandleType p_readSurface);
     80     bool  setWindowSurfaceColorBuffer(HandleType p_surface, HandleType p_colorbuffer);
     81     bool  flushWindowSurfaceColorBuffer(HandleType p_surface);
     82     bool  bindColorBufferToTexture(HandleType p_colorbuffer);
     83     bool  bindColorBufferToRenderbuffer(HandleType p_colorbuffer);
     84     bool updateColorBuffer(HandleType p_colorbuffer,
     85                            int x, int y, int width, int height,
     86                            GLenum format, GLenum type, void *pixels);
     87 
     88     bool post(HandleType p_colorbuffer, bool needLock = true);
     89     bool repost();
     90 
     91     EGLDisplay getDisplay() const { return m_eglDisplay; }
     92     EGLNativeWindowType getSubWindow() const { return m_subWin; }
     93     bool bind_locked();
     94     bool unbind_locked();
     95 
     96     void setDisplayRotation(float zRot) {
     97         m_zRot = zRot;
     98         repost();
     99     }
    100 
    101 private:
    102     FrameBuffer(int p_width, int p_height);
    103     ~FrameBuffer();
    104     HandleType genHandle();
    105     bool bindSubwin_locked();
    106     void initGLState();
    107 
    108 private:
    109     static FrameBuffer *s_theFrameBuffer;
    110     static HandleType s_nextHandle;
    111     int m_x;
    112     int m_y;
    113     int m_width;
    114     int m_height;
    115     emugl::Mutex m_lock;
    116     FBNativeWindowType m_nativeWindow;
    117     FrameBufferCaps m_caps;
    118     EGLDisplay m_eglDisplay;
    119     RenderContextMap m_contexts;
    120     WindowSurfaceMap m_windows;
    121     ColorBufferMap m_colorbuffers;
    122 
    123     EGLSurface m_eglSurface;
    124     EGLContext m_eglContext;
    125     EGLSurface m_pbufSurface;
    126     EGLContext m_pbufContext;
    127 
    128     EGLContext m_prevContext;
    129     EGLSurface m_prevReadSurf;
    130     EGLSurface m_prevDrawSurf;
    131     EGLNativeWindowType m_subWin;
    132     EGLNativeDisplayType m_subWinDisplay;
    133     EGLConfig  m_eglConfig;
    134     HandleType m_lastPostedColorBuffer;
    135     float      m_zRot;
    136     bool       m_eglContextInitialized;
    137 
    138     int m_statsNumFrames;
    139     long long m_statsStartTime;
    140     bool m_fpsStats;
    141 
    142     OnPostFn m_onPost;
    143     void* m_onPostContext;
    144     unsigned char* m_fbImage;
    145 
    146     const char* m_glVendor;
    147     const char* m_glRenderer;
    148     const char* m_glVersion;
    149 };
    150 #endif
    151