SurfaceControl.cpp revision 13fdc49516d17f41e64e62e73c313b0928bf13cc 
1/*
2 * Copyright (C) 2007 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#define LOG_TAG "SurfaceControl"
18
19#include <stdint.h>
20#include <errno.h>
21#include <sys/types.h>
22#include <sys/stat.h>
23
24#include <android/native_window.h>
25
26#include <utils/Errors.h>
27#include <utils/Log.h>
28#include <utils/threads.h>
29
30#include <binder/IPCThreadState.h>
31
32#include <ui/DisplayInfo.h>
33#include <ui/GraphicBuffer.h>
34#include <ui/Rect.h>
35
36#include <gui/BufferQueueCore.h>
37#include <gui/ISurfaceComposer.h>
38#include <gui/Surface.h>
39#include <gui/SurfaceComposerClient.h>
40#include <gui/SurfaceControl.h>
41
42namespace android {
43
44// ============================================================================
45//  SurfaceControl
46// ============================================================================
47
48SurfaceControl::SurfaceControl(
49        const sp<SurfaceComposerClient>& client,
50        const sp<IBinder>& handle,
51        const sp<IGraphicBufferProducer>& gbp)
52    : mClient(client), mHandle(handle), mGraphicBufferProducer(gbp)
53{
54}
55
56SurfaceControl::~SurfaceControl()
57{
58    destroy();
59}
60
61void SurfaceControl::destroy()
62{
63    if (isValid()) {
64        mClient->destroySurface(mHandle);
65    }
66    // clear all references and trigger an IPC now, to make sure things
67    // happen without delay, since these resources are quite heavy.
68    mClient.clear();
69    mHandle.clear();
70    mGraphicBufferProducer.clear();
71    IPCThreadState::self()->flushCommands();
72}
73
74void SurfaceControl::clear()
75{
76    // here, the window manager tells us explicitly that we should destroy
77    // the surface's resource. Soon after this call, it will also release
78    // its last reference (which will call the dtor); however, it is possible
79    // that a client living in the same process still holds references which
80    // would delay the call to the dtor -- that is why we need this explicit
81    // "clear()" call.
82    destroy();
83}
84
85void SurfaceControl::disconnect() {
86    if (mGraphicBufferProducer != NULL) {
87        mGraphicBufferProducer->disconnect(
88                BufferQueueCore::CURRENTLY_CONNECTED_API);
89    }
90}
91
92bool SurfaceControl::isSameSurface(
93        const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs)
94{
95    if (lhs == 0 || rhs == 0)
96        return false;
97    return lhs->mHandle == rhs->mHandle;
98}
99
100status_t SurfaceControl::setLayerStack(uint32_t layerStack) {
101    status_t err = validate();
102    if (err < 0) return err;
103    return mClient->setLayerStack(mHandle, layerStack);
104}
105
106status_t SurfaceControl::setLayer(int32_t layer) {
107    status_t err = validate();
108    if (err < 0) return err;
109    return mClient->setLayer(mHandle, layer);
110}
111
112status_t SurfaceControl::setRelativeLayer(const sp<IBinder>& relativeTo, int32_t layer) {
113    status_t err = validate();
114    if (err < 0) return err;
115    return mClient->setRelativeLayer(mHandle, relativeTo, layer);
116}
117
118status_t SurfaceControl::setPosition(float x, float y) {
119    status_t err = validate();
120    if (err < 0) return err;
121    return mClient->setPosition(mHandle, x, y);
122}
123status_t SurfaceControl::setGeometryAppliesWithResize() {
124    status_t err = validate();
125    if (err < 0) return err;
126    return mClient->setGeometryAppliesWithResize(mHandle);
127}
128status_t SurfaceControl::setSize(uint32_t w, uint32_t h) {
129    status_t err = validate();
130    if (err < 0) return err;
131    return mClient->setSize(mHandle, w, h);
132}
133status_t SurfaceControl::hide() {
134    status_t err = validate();
135    if (err < 0) return err;
136    return mClient->hide(mHandle);
137}
138status_t SurfaceControl::show() {
139    status_t err = validate();
140    if (err < 0) return err;
141    return mClient->show(mHandle);
142}
143status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
144    status_t err = validate();
145    if (err < 0) return err;
146    return mClient->setFlags(mHandle, flags, mask);
147}
148status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) {
149    status_t err = validate();
150    if (err < 0) return err;
151    return mClient->setTransparentRegionHint(mHandle, transparent);
152}
153status_t SurfaceControl::setAlpha(float alpha) {
154    status_t err = validate();
155    if (err < 0) return err;
156    return mClient->setAlpha(mHandle, alpha);
157}
158status_t SurfaceControl::setColor(const half3& color) {
159    status_t err = validate();
160    if (err < 0) return err;
161    return mClient->setColor(mHandle, color);
162}
163status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dtdy, float dsdy) {
164    status_t err = validate();
165    if (err < 0) return err;
166    return mClient->setMatrix(mHandle, dsdx, dtdx, dtdy, dsdy);
167}
168status_t SurfaceControl::setCrop(const Rect& crop) {
169    status_t err = validate();
170    if (err < 0) return err;
171    return mClient->setCrop(mHandle, crop);
172}
173status_t SurfaceControl::setFinalCrop(const Rect& crop) {
174    status_t err = validate();
175    if (err < 0) return err;
176    return mClient->setFinalCrop(mHandle, crop);
177}
178
179status_t SurfaceControl::deferTransactionUntil(const sp<IBinder>& handle,
180        uint64_t frameNumber) {
181    status_t err = validate();
182    if (err < 0) return err;
183    return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
184}
185
186status_t SurfaceControl::deferTransactionUntil(const sp<Surface>& handle,
187        uint64_t frameNumber) {
188    status_t err = validate();
189    if (err < 0) return err;
190    return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
191}
192
193status_t SurfaceControl::reparentChildren(const sp<IBinder>& newParentHandle) {
194    status_t err = validate();
195    if (err < 0) return err;
196    return mClient->reparentChildren(mHandle, newParentHandle);
197}
198
199status_t SurfaceControl::reparent(const sp<IBinder>& newParentHandle) {
200    status_t err = validate();
201    if (err < 0) return err;
202    return mClient->reparent(mHandle, newParentHandle);
203}
204
205status_t SurfaceControl::detachChildren() {
206    status_t err = validate();
207    if (err < 0) return err;
208    return mClient->detachChildren(mHandle);
209}
210
211status_t SurfaceControl::setOverrideScalingMode(int32_t overrideScalingMode) {
212    status_t err = validate();
213    if (err < 0) return err;
214    return mClient->setOverrideScalingMode(mHandle, overrideScalingMode);
215}
216
217status_t SurfaceControl::clearLayerFrameStats() const {
218    status_t err = validate();
219    if (err < 0) return err;
220    const sp<SurfaceComposerClient>& client(mClient);
221    return client->clearLayerFrameStats(mHandle);
222}
223
224status_t SurfaceControl::getLayerFrameStats(FrameStats* outStats) const {
225    status_t err = validate();
226    if (err < 0) return err;
227    const sp<SurfaceComposerClient>& client(mClient);
228    return client->getLayerFrameStats(mHandle, outStats);
229}
230
231status_t SurfaceControl::validate() const
232{
233    if (mHandle==0 || mClient==0) {
234        ALOGE("invalid handle (%p) or client (%p)",
235                mHandle.get(), mClient.get());
236        return NO_INIT;
237    }
238    return NO_ERROR;
239}
240
241status_t SurfaceControl::writeSurfaceToParcel(
242        const sp<SurfaceControl>& control, Parcel* parcel)
243{
244    sp<IGraphicBufferProducer> bp;
245    if (control != NULL) {
246        bp = control->mGraphicBufferProducer;
247    }
248    return parcel->writeStrongBinder(IInterface::asBinder(bp));
249}
250
251sp<Surface> SurfaceControl::generateSurfaceLocked() const
252{
253    // This surface is always consumed by SurfaceFlinger, so the
254    // producerControlledByApp value doesn't matter; using false.
255    mSurfaceData = new Surface(mGraphicBufferProducer, false);
256
257    return mSurfaceData;
258}
259
260sp<Surface> SurfaceControl::getSurface() const
261{
262    Mutex::Autolock _l(mLock);
263    if (mSurfaceData == 0) {
264        return generateSurfaceLocked();
265    }
266    return mSurfaceData;
267}
268
269sp<Surface> SurfaceControl::createSurface() const
270{
271    Mutex::Autolock _l(mLock);
272    return generateSurfaceLocked();
273}
274
275sp<IBinder> SurfaceControl::getHandle() const
276{
277    Mutex::Autolock lock(mLock);
278    return mHandle;
279}
280
281// ----------------------------------------------------------------------------
282}; // namespace android
283