HWComposer.h revision 7ee4cd5556cef1878e1d4729f1b389f186311027 
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
27#include <utils/StrongPointer.h>
28
29namespace android {
30// ---------------------------------------------------------------------------
31
32class String8;
33class SurfaceFlinger;
34
35class HWComposer
36{
37public:
38
39    HWComposer(const sp<SurfaceFlinger>& flinger);
40    ~HWComposer();
41
42    status_t initCheck() const;
43
44    // tells the HAL what the framebuffer is
45    void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
46
47    // create a work list for numLayers layer
48    status_t createWorkList(size_t numLayers);
49
50    // Asks the HAL what it can do
51    status_t prepare() const;
52
53    // disable hwc until next createWorkList
54    status_t disable();
55
56    // commits the list
57    status_t commit() const;
58
59    // release hardware resources
60    status_t release() const;
61
62    size_t getNumLayers() const;
63    hwc_layer_t* getLayers() const;
64
65    // for debugging
66    void dump(String8& out, char* scratch, size_t SIZE) const;
67
68private:
69    struct cb_context {
70        hwc_procs_t procs;
71        HWComposer* hwc;
72    };
73    static void hook_invalidate(struct hwc_procs* procs);
74    void invalidate();
75
76    sp<SurfaceFlinger>      mFlinger;
77    hw_module_t const*      mModule;
78    hwc_composer_device_t*  mHwc;
79    hwc_layer_list_t*       mList;
80    size_t                  mCapacity;
81    hwc_display_t           mDpy;
82    hwc_surface_t           mSur;
83    cb_context              mCBContext;
84};
85
86
87// ---------------------------------------------------------------------------
88}; // namespace android
89
90#endif // ANDROID_SF_HWCOMPOSER_H
91