1/*
2 * Copyright (C) 2006 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_ISURFACE_COMPOSER_H
18#define ANDROID_SF_ISURFACE_COMPOSER_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <utils/RefBase.h>
24#include <utils/Errors.h>
25
26#include <binder/IInterface.h>
27
28#include <ui/PixelFormat.h>
29
30#include <surfaceflinger/ISurfaceComposerClient.h>
31#include <surfaceflinger/IGraphicBufferAlloc.h>
32
33namespace android {
34// ----------------------------------------------------------------------------
35
36class IMemoryHeap;
37class ComposerState;
38
39class ISurfaceComposer : public IInterface
40{
41public:
42    DECLARE_META_INTERFACE(SurfaceComposer);
43
44    enum { // (keep in sync with Surface.java)
45        eHidden             = 0x00000004,
46        eDestroyBackbuffer  = 0x00000020,
47        eSecure             = 0x00000080,
48        eNonPremultiplied   = 0x00000100,
49        eOpaque             = 0x00000400,
50        eProtectedByApp     = 0x00000800,
51        eProtectedByDRM     = 0x00001000,
52
53        eFXSurfaceNormal    = 0x00000000,
54        eFXSurfaceBlur      = 0x00010000,
55        eFXSurfaceDim       = 0x00020000,
56        eFXSurfaceScreenshot= 0x00030000,
57        eFXSurfaceMask      = 0x000F0000,
58    };
59
60    enum {
61        ePositionChanged            = 0x00000001,
62        eLayerChanged               = 0x00000002,
63        eSizeChanged                = 0x00000004,
64        eAlphaChanged               = 0x00000008,
65        eMatrixChanged              = 0x00000010,
66        eTransparentRegionChanged   = 0x00000020,
67        eVisibilityChanged          = 0x00000040,
68        eFreezeTintChanged          = 0x00000080,
69    };
70
71    enum {
72        eLayerHidden        = 0x01,
73        eLayerFrozen        = 0x02,
74        eLayerDither        = 0x04,
75        eLayerFilter        = 0x08,
76        eLayerBlurFreeze    = 0x10
77    };
78
79    enum {
80        eOrientationDefault     = 0,
81        eOrientation90          = 1,
82        eOrientation180         = 2,
83        eOrientation270         = 3,
84        eOrientationUnchanged   = 4,
85        eOrientationSwapMask    = 0x01
86    };
87
88    enum {
89        eSynchronous            = 0x01,
90    };
91
92    enum {
93        eElectronBeamAnimationOn  = 0x01,
94        eElectronBeamAnimationOff = 0x10
95    };
96
97    /* create connection with surface flinger, requires
98     * ACCESS_SURFACE_FLINGER permission
99     */
100    virtual sp<ISurfaceComposerClient> createConnection() = 0;
101
102    /* create a graphic buffer allocator
103     */
104    virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc() = 0;
105
106    /* retrieve the control block */
107    virtual sp<IMemoryHeap> getCblk() const = 0;
108
109    /* open/close transactions. requires ACCESS_SURFACE_FLINGER permission */
110    virtual void setTransactionState(const Vector<ComposerState>& state,
111            int orientation, uint32_t flags) = 0;
112
113    /* signal that we're done booting.
114     * Requires ACCESS_SURFACE_FLINGER permission
115     */
116    virtual void bootFinished() = 0;
117
118    /* Capture the specified screen. requires READ_FRAME_BUFFER permission
119     * This function will fail if there is a secure window on screen.
120     */
121    virtual status_t captureScreen(DisplayID dpy,
122            sp<IMemoryHeap>* heap,
123            uint32_t* width, uint32_t* height, PixelFormat* format,
124            uint32_t reqWidth, uint32_t reqHeight,
125            uint32_t minLayerZ, uint32_t maxLayerZ) = 0;
126
127    virtual status_t turnElectronBeamOff(int32_t mode) = 0;
128    virtual status_t turnElectronBeamOn(int32_t mode) = 0;
129
130    /* verify that an ISurfaceTexture was created by SurfaceFlinger.
131     */
132    virtual bool authenticateSurfaceTexture(
133            const sp<ISurfaceTexture>& surface) const = 0;
134};
135
136// ----------------------------------------------------------------------------
137
138class BnSurfaceComposer : public BnInterface<ISurfaceComposer>
139{
140public:
141    enum {
142        // Note: BOOT_FINISHED must remain this value, it is called from
143        // Java by ActivityManagerService.
144        BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION,
145        CREATE_CONNECTION,
146        CREATE_GRAPHIC_BUFFER_ALLOC,
147        GET_CBLK,
148        SET_TRANSACTION_STATE,
149        SET_ORIENTATION,
150        CAPTURE_SCREEN,
151        TURN_ELECTRON_BEAM_OFF,
152        TURN_ELECTRON_BEAM_ON,
153        AUTHENTICATE_SURFACE,
154    };
155
156    virtual status_t    onTransact( uint32_t code,
157                                    const Parcel& data,
158                                    Parcel* reply,
159                                    uint32_t flags = 0);
160};
161
162// ----------------------------------------------------------------------------
163
164}; // namespace android
165
166#endif // ANDROID_SF_ISURFACE_COMPOSER_H
167