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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 _SYSTEM_EGL_DISPLAY_H
     17 #define _SYSTEM_EGL_DISPLAY_H
     18 
     19 #include <pthread.h>
     20 #include "glUtils.h"
     21 #include <EGL/egl.h>
     22 #include <EGL/eglext.h>
     23 #include "EGLClientIface.h"
     24 #include <utils/KeyedVector.h>
     25 
     26 #include <ui/PixelFormat.h>
     27 
     28 #define ATTRIBUTE_NONE -1
     29 //FIXME: are we in this namespace?
     30 using namespace android;
     31 
     32 class eglDisplay
     33 {
     34 public:
     35     eglDisplay();
     36     ~eglDisplay();
     37 
     38     bool initialize(EGLClient_eglInterface *eglIface);
     39     void terminate();
     40 
     41     int getVersionMajor() const { return m_major; }
     42     int getVersionMinor() const { return m_minor; }
     43     bool initialized() const { return m_initialized; }
     44 
     45     const char *queryString(EGLint name);
     46 
     47     const EGLClient_glesInterface *gles_iface() const { return m_gles_iface; }
     48     const EGLClient_glesInterface *gles2_iface() const { return m_gles2_iface; }
     49 
     50     int     getNumConfigs(){ return m_numConfigs; }
     51     EGLBoolean  getConfigAttrib(EGLConfig config, EGLint attrib, EGLint * value);
     52     EGLBoolean  setConfigAttrib(EGLConfig config, EGLint attrib, EGLint value);
     53     EGLBoolean getConfigGLPixelFormat(EGLConfig config, GLenum * format);
     54     EGLBoolean getConfigNativePixelFormat(EGLConfig config, PixelFormat * format);
     55 
     56     void     dumpConfig(EGLConfig config);
     57 private:
     58     EGLClient_glesInterface *loadGLESClientAPI(const char *libName,
     59                                                EGLClient_eglInterface *eglIface,
     60                                                void **libHandle);
     61     EGLBoolean getAttribValue(EGLConfig config, EGLint attribIdxi, EGLint * value);
     62     EGLBoolean setAttribValue(EGLConfig config, EGLint attribIdxi, EGLint value);
     63     void     processConfigs();
     64 
     65 private:
     66     pthread_mutex_t m_lock;
     67     bool m_initialized;
     68     int  m_major;
     69     int  m_minor;
     70     int  m_hostRendererVersion;
     71     int  m_numConfigs;
     72     int  m_numConfigAttribs;
     73 
     74     /* This is the mapping between an attribute name to it's index in any given config */
     75     DefaultKeyedVector<EGLint, EGLint>    m_attribs;
     76     /* This is an array of all config's attributes values stored in the following sequencial fasion (read: v[c,a] = the value of attribute <a> of config <c>)
     77      * v[0,0],..,v[0,m_numConfigAttribs-1],
     78      *...
     79      * v[m_numConfigs-1,0],..,v[m_numConfigs-1,m_numConfigAttribs-1]
     80      */
     81     EGLint *m_configs;
     82     EGLClient_glesInterface *m_gles_iface;
     83     EGLClient_glesInterface *m_gles2_iface;
     84     char *m_versionString;
     85     char *m_vendorString;
     86     char *m_extensionString;
     87 };
     88 
     89 #endif
     90