HWComposer.h revision 8372785879d329f592f6883620b5a32d80d74691 
1/*
2 * Copyright (C) 2010 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_SF_HWCOMPOSER_H
18#define ANDROID_SF_HWCOMPOSER_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <EGL/egl.h>
24
25#include <hardware/hwcomposer.h>
26
27namespace android {
28// ---------------------------------------------------------------------------
29
30class String8;
31
32class HWComposer
33{
34public:
35
36    HWComposer();
37    ~HWComposer();
38
39    status_t initCheck() const;
40
41    // tells the HAL what the framebuffer is
42    void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
43
44    // create a work list for numLayers layer
45    status_t createWorkList(size_t numLayers);
46
47    // Asks the HAL what it can do
48    status_t prepare() const;
49
50    // commits the list
51    status_t commit() const;
52
53    // release hardware resources
54    status_t release() const;
55
56    size_t getNumLayers() const;
57    hwc_layer_t* getLayers() const;
58
59    // for debugging
60    void dump(String8& out, char* scratch, size_t SIZE) const;
61
62private:
63    hw_module_t const*      mModule;
64    hwc_composer_device_t*  mHwc;
65    hwc_layer_list_t*       mList;
66    size_t                  mCapacity;
67    hwc_display_t           mDpy;
68    hwc_surface_t           mSur;
69};
70
71
72// ---------------------------------------------------------------------------
73}; // namespace android
74
75#endif // ANDROID_SF_HWCOMPOSER_H
76