df85c455c3
the core screenshot function now can capture the screen at any lower resolution performing bilinear filtering. we also now have some client code to interface with the screenshot service. it's now possible to request a screenshot at a lower resolution. Change-Id: I33689bba98507ab928d0898b21596d0d2fe4b953
159 lines
4.9 KiB
C++
159 lines
4.9 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SF_ISURFACE_COMPOSER_H
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#define ANDROID_SF_ISURFACE_COMPOSER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/RefBase.h>
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#include <utils/Errors.h>
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#include <binder/IInterface.h>
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#include <ui/PixelFormat.h>
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#include <surfaceflinger/ISurfaceComposerClient.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class ISurfaceComposer : public IInterface
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{
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public:
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DECLARE_META_INTERFACE(SurfaceComposer);
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enum { // (keep in sync with Surface.java)
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eHidden = 0x00000004,
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eDestroyBackbuffer = 0x00000020,
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eSecure = 0x00000080,
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eNonPremultiplied = 0x00000100,
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ePushBuffers = 0x00000200,
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eFXSurfaceNormal = 0x00000000,
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eFXSurfaceBlur = 0x00010000,
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eFXSurfaceDim = 0x00020000,
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eFXSurfaceMask = 0x000F0000,
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};
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enum {
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ePositionChanged = 0x00000001,
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eLayerChanged = 0x00000002,
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eSizeChanged = 0x00000004,
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eAlphaChanged = 0x00000008,
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eMatrixChanged = 0x00000010,
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eTransparentRegionChanged = 0x00000020,
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eVisibilityChanged = 0x00000040,
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eFreezeTintChanged = 0x00000080,
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};
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enum {
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eLayerHidden = 0x01,
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eLayerFrozen = 0x02,
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eLayerDither = 0x04,
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eLayerFilter = 0x08,
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eLayerBlurFreeze = 0x10
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};
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enum {
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eOrientationDefault = 0,
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eOrientation90 = 1,
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eOrientation180 = 2,
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eOrientation270 = 3,
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eOrientationSwapMask = 0x01
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};
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// flags for setOrientation
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enum {
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eOrientationAnimationDisable = 0x00000001
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};
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/* create connection with surface flinger, requires
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* ACCESS_SURFACE_FLINGER permission
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*/
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virtual sp<ISurfaceComposerClient> createConnection() = 0;
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/* create a client connection with surface flinger
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*/
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virtual sp<ISurfaceComposerClient> createClientConnection() = 0;
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/* retrieve the control block */
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virtual sp<IMemoryHeap> getCblk() const = 0;
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/* open/close transactions. requires ACCESS_SURFACE_FLINGER permission */
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virtual void openGlobalTransaction() = 0;
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virtual void closeGlobalTransaction() = 0;
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/* [un]freeze display. requires ACCESS_SURFACE_FLINGER permission */
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virtual status_t freezeDisplay(DisplayID dpy, uint32_t flags) = 0;
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virtual status_t unfreezeDisplay(DisplayID dpy, uint32_t flags) = 0;
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/* Set display orientation. requires ACCESS_SURFACE_FLINGER permission */
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virtual int setOrientation(DisplayID dpy, int orientation, uint32_t flags) = 0;
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/* signal that we're done booting.
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* Requires ACCESS_SURFACE_FLINGER permission
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*/
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virtual void bootFinished() = 0;
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/* Capture the specified screen. requires READ_FRAME_BUFFER permission
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* This function will fail if there is a secure window on screen.
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*/
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virtual status_t captureScreen(DisplayID dpy,
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sp<IMemoryHeap>* heap,
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uint32_t* width, uint32_t* height, PixelFormat* format,
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uint32_t reqWidth, uint32_t reqHeight) = 0;
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/* Signal surfaceflinger that there might be some work to do
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* This is an ASYNCHRONOUS call.
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*/
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virtual void signal() const = 0;
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};
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// ----------------------------------------------------------------------------
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class BnSurfaceComposer : public BnInterface<ISurfaceComposer>
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{
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public:
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enum {
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// Note: BOOT_FINISHED must remain this value, it is called from
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// Java by ActivityManagerService.
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BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION,
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CREATE_CONNECTION,
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CREATE_CLIENT_CONNECTION,
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GET_CBLK,
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OPEN_GLOBAL_TRANSACTION,
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CLOSE_GLOBAL_TRANSACTION,
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SET_ORIENTATION,
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FREEZE_DISPLAY,
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UNFREEZE_DISPLAY,
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SIGNAL,
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CAPTURE_SCREEN
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};
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_SF_ISURFACE_COMPOSER_H
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