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The Android Open Source Project9066cfe2009-03-03 19:31:44 -08001/*
2 **
3 ** Copyright 2006, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18#ifndef ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H
19#define ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H
20
21#include <stdint.h>
22#include <stddef.h>
23#include <sys/types.h>
24
25#include <utils/Atomic.h>
26#include <utils/RefBase.h>
27#include <utils/KeyedVector.h>
28#include <utils/Errors.h>
29
30#include <GLES/gl.h>
31
32#include "Tokenizer.h"
33#include "TokenManager.h"
34
35
36namespace android {
37
38// ----------------------------------------------------------------------------
39
40namespace gl {
41
42struct buffer_t {
43 GLsizeiptr size;
44 GLenum usage;
45 uint8_t* data;
46 uint32_t name;
47};
48
49};
50
51class EGLBufferObjectManager : public TokenManager
52{
53public:
54 EGLBufferObjectManager();
55 ~EGLBufferObjectManager();
56
57 // protocol for sp<>
58 inline void incStrong(const void* id) const;
59 inline void decStrong(const void* id) const;
60 typedef void weakref_type;
61
62 gl::buffer_t const* bind(GLuint buffer);
63 int allocateStore(gl::buffer_t* bo, GLsizeiptr size, GLenum usage);
64 void deleteBuffers(GLsizei n, const GLuint* buffers);
65
66private:
67 mutable volatile int32_t mCount;
68 mutable Mutex mLock;
69 KeyedVector<GLuint, gl::buffer_t*> mBuffers;
70};
71
72void EGLBufferObjectManager::incStrong(const void* id) const {
73 android_atomic_inc(&mCount);
74}
75void EGLBufferObjectManager::decStrong(const void* id) const {
76 if (android_atomic_dec(&mCount) == 1) {
77 delete this;
78 }
79}
80
81// ----------------------------------------------------------------------------
82}; // namespace android
83
84#endif // ANDROID_OPENGLES_BUFFER_OBJECT_MANAGER_H
85