egl_display.h revision 7db993a98b9239bd4e384cc4aa128262fe3cf52c 
1/*
2 ** Copyright 2007, 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
17#ifndef ANDROID_EGL_DISPLAY_H
18#define ANDROID_EGL_DISPLAY_H
19
20
21#include <ctype.h>
22#include <stdint.h>
23#include <stdlib.h>
24
25#include <EGL/egl.h>
26#include <EGL/eglext.h>
27#include <GLES/gl.h>
28#include <GLES/glext.h>
29
30#include <utils/SortedVector.h>
31#include <utils/threads.h>
32#include <utils/String8.h>
33
34#include "egldefs.h"
35#include "hooks.h"
36
37// ----------------------------------------------------------------------------
38namespace android {
39// ----------------------------------------------------------------------------
40
41class egl_object_t;
42class egl_context_t;
43class egl_connection_t;
44
45// ----------------------------------------------------------------------------
46
47class EGLAPI egl_display_t { // marked as EGLAPI for testing purposes
48    static egl_display_t sDisplay[NUM_DISPLAYS];
49    EGLDisplay getDisplay(EGLNativeDisplayType display);
50    void loseCurrentImpl(egl_context_t * cur_c);
51
52public:
53    enum {
54        NOT_INITIALIZED = 0,
55        INITIALIZED     = 1,
56        TERMINATED      = 2
57    };
58
59    egl_display_t();
60    ~egl_display_t();
61
62    EGLBoolean initialize(EGLint *major, EGLint *minor);
63    EGLBoolean terminate();
64
65    // add object to this display's list
66    void addObject(egl_object_t* object);
67    // remove object from this display's list
68    void removeObject(egl_object_t* object);
69    // add reference to this object. returns true if this is a valid object.
70    bool getObject(egl_object_t* object) const;
71
72    static egl_display_t* get(EGLDisplay dpy);
73    static EGLDisplay getFromNativeDisplay(EGLNativeDisplayType disp);
74
75    EGLBoolean makeCurrent(egl_context_t* c, egl_context_t* cur_c,
76            EGLSurface draw, EGLSurface read, EGLContext ctx,
77            EGLSurface impl_draw, EGLSurface impl_read, EGLContext impl_ctx);
78    static void loseCurrent(egl_context_t * cur_c);
79
80    inline bool isReady() const { return (refs > 0); }
81    inline bool isValid() const { return magic == '_dpy'; }
82    inline bool isAlive() const { return isValid(); }
83
84    char const * getVendorString() const { return mVendorString.string(); }
85    char const * getVersionString() const { return mVersionString.string(); }
86    char const * getClientApiString() const { return mClientApiString.string(); }
87    char const * getExtensionString() const { return mExtensionString.string(); }
88
89    inline uint32_t getRefsCount() const { return refs; }
90
91    struct strings_t {
92        char const * vendor;
93        char const * version;
94        char const * clientApi;
95        char const * extensions;
96    };
97
98    struct DisplayImpl {
99        DisplayImpl() : dpy(EGL_NO_DISPLAY), state(NOT_INITIALIZED) { }
100        EGLDisplay  dpy;
101        EGLint      state;
102        strings_t   queryString;
103    };
104
105private:
106    uint32_t        magic;
107
108public:
109    DisplayImpl     disp;
110    bool    finishOnSwap;
111
112private:
113            uint32_t                    refs;
114    mutable Mutex                       lock;
115            SortedVector<egl_object_t*> objects;
116            String8 mVendorString;
117            String8 mVersionString;
118            String8 mClientApiString;
119            String8 mExtensionString;
120};
121
122// ----------------------------------------------------------------------------
123
124inline egl_display_t* get_display(EGLDisplay dpy) {
125    return egl_display_t::get(dpy);
126}
127
128// ----------------------------------------------------------------------------
129
130egl_display_t* validate_display(EGLDisplay dpy);
131egl_connection_t* validate_display_config(EGLDisplay dpy,
132        EGLConfig config, egl_display_t const*& dp);
133EGLBoolean validate_display_context(EGLDisplay dpy, EGLContext ctx);
134EGLBoolean validate_display_surface(EGLDisplay dpy, EGLSurface surface);
135
136// ----------------------------------------------------------------------------
137}; // namespace android
138// ----------------------------------------------------------------------------
139
140#endif // ANDROID_EGL_DISPLAY_H
141