1 /*
2 * Copyright (C) 2012 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 #include <stdint.h>
18 #include <sys/types.h>
19
20 #include <binder/IPCThreadState.h>
21
22 #include <private/android_filesystem_config.h>
23
24 #include "Client.h"
25 #include "Layer.h"
26 #include "SurfaceFlinger.h"
27
28 namespace android {
29
30 // ---------------------------------------------------------------------------
31
32 const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
33
34 // ---------------------------------------------------------------------------
35
Client(const sp<SurfaceFlinger> & flinger)36 Client::Client(const sp<SurfaceFlinger>& flinger)
37 : mFlinger(flinger)
38 {
39 }
40
initCheck() const41 status_t Client::initCheck() const {
42 return NO_ERROR;
43 }
44
attachLayer(const sp<IBinder> & handle,const sp<Layer> & layer)45 void Client::attachLayer(const sp<IBinder>& handle, const sp<Layer>& layer)
46 {
47 Mutex::Autolock _l(mLock);
48 mLayers.add(handle, layer);
49 }
50
detachLayer(const Layer * layer)51 void Client::detachLayer(const Layer* layer)
52 {
53 Mutex::Autolock _l(mLock);
54 // we do a linear search here, because this doesn't happen often
55 const size_t count = mLayers.size();
56 for (size_t i=0 ; i<count ; i++) {
57 if (mLayers.valueAt(i) == layer) {
58 mLayers.removeItemsAt(i, 1);
59 break;
60 }
61 }
62 }
getLayerUser(const sp<IBinder> & handle) const63 sp<Layer> Client::getLayerUser(const sp<IBinder>& handle) const
64 {
65 Mutex::Autolock _l(mLock);
66 sp<Layer> lbc;
67 wp<Layer> layer(mLayers.valueFor(handle));
68 if (layer != 0) {
69 lbc = layer.promote();
70 ALOGE_IF(lbc==0, "getLayerUser(name=%p) is dead", handle.get());
71 }
72 return lbc;
73 }
74
createSurface(const String8 & name,uint32_t w,uint32_t h,PixelFormat format,uint32_t flags,const sp<IBinder> & parentHandle,LayerMetadata metadata,sp<IBinder> * handle,sp<IGraphicBufferProducer> * gbp)75 status_t Client::createSurface(const String8& name, uint32_t w, uint32_t h, PixelFormat format,
76 uint32_t flags, const sp<IBinder>& parentHandle,
77 LayerMetadata metadata, sp<IBinder>* handle,
78 sp<IGraphicBufferProducer>* gbp) {
79 // We rely on createLayer to check permissions.
80 return mFlinger->createLayer(name, this, w, h, format, flags, std::move(metadata), handle, gbp,
81 parentHandle);
82 }
83
createWithSurfaceParent(const String8 & name,uint32_t w,uint32_t h,PixelFormat format,uint32_t flags,const sp<IGraphicBufferProducer> & parent,LayerMetadata metadata,sp<IBinder> * handle,sp<IGraphicBufferProducer> * gbp)84 status_t Client::createWithSurfaceParent(const String8& name, uint32_t w, uint32_t h,
85 PixelFormat format, uint32_t flags,
86 const sp<IGraphicBufferProducer>& parent,
87 LayerMetadata metadata, sp<IBinder>* handle,
88 sp<IGraphicBufferProducer>* gbp) {
89 if (mFlinger->authenticateSurfaceTexture(parent) == false) {
90 ALOGE("failed to authenticate surface texture");
91 return BAD_VALUE;
92 }
93
94 const auto& layer = (static_cast<MonitoredProducer*>(parent.get()))->getLayer();
95 if (layer == nullptr) {
96 ALOGE("failed to find parent layer");
97 return BAD_VALUE;
98 }
99
100 return mFlinger->createLayer(name, this, w, h, format, flags, std::move(metadata), handle, gbp,
101 nullptr, layer);
102 }
103
clearLayerFrameStats(const sp<IBinder> & handle) const104 status_t Client::clearLayerFrameStats(const sp<IBinder>& handle) const {
105 sp<Layer> layer = getLayerUser(handle);
106 if (layer == nullptr) {
107 return NAME_NOT_FOUND;
108 }
109 layer->clearFrameStats();
110 return NO_ERROR;
111 }
112
getLayerFrameStats(const sp<IBinder> & handle,FrameStats * outStats) const113 status_t Client::getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const {
114 sp<Layer> layer = getLayerUser(handle);
115 if (layer == nullptr) {
116 return NAME_NOT_FOUND;
117 }
118 layer->getFrameStats(outStats);
119 return NO_ERROR;
120 }
121
122 // ---------------------------------------------------------------------------
123 }; // namespace android
124