libs/gui/ISurfaceComposerClient.cpp

   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 // tag as surfaceflinger
  18 #define LOG_TAG "SurfaceFlinger"
  19
  20 #include <stdio.h>
  21 #include <stdint.h>
  22 #include <sys/types.h>
  23
  24 #include <binder/Parcel.h>
  25 #include <binder/IMemory.h>
  26 #include <binder/IPCThreadState.h>
  27 #include <binder/IServiceManager.h>
  28
  29 #include <ui/Point.h>
  30 #include <ui/Rect.h>
  31
  32 #include <gui/IGraphicBufferProducer.h>
  33 #include <gui/ISurfaceComposerClient.h>
  34 #include <private/gui/LayerState.h>
  35
  36 // ---------------------------------------------------------------------------
  37
  38 namespace android {
  39
  40 enum {
  41     CREATE_SURFACE = IBinder::FIRST_CALL_TRANSACTION,
  42     DESTROY_SURFACE,
  43     CLEAR_LAYER_FRAME_STATS,
  44     GET_LAYER_FRAME_STATS
  45 };
  46
  47 class BpSurfaceComposerClient : public BpInterface<ISurfaceComposerClient>
  48 {
  49 public:
  50     BpSurfaceComposerClient(const sp<IBinder>& impl)
  51         : BpInterface<ISurfaceComposerClient>(impl) {
  52     }
  53
  54     virtual status_t createSurface(const String8& name, uint32_t w,
  55             uint32_t h, PixelFormat format, uint32_t flags,
  56             sp<IBinder>* handle,
  57             sp<IGraphicBufferProducer>* gbp) {
  58         Parcel data, reply;
  59         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
  60         data.writeString8(name);
  61         data.writeInt32(w);
  62         data.writeInt32(h);
  63         data.writeInt32(format);
  64         data.writeInt32(flags);
  65         remote()->transact(CREATE_SURFACE, data, &reply);
  66         *handle = reply.readStrongBinder();
  67         *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
  68         return reply.readInt32();
  69     }
  70
  71     virtual status_t destroySurface(const sp<IBinder>& handle) {
  72         Parcel data, reply;
  73         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
  74         data.writeStrongBinder(handle);
  75         remote()->transact(DESTROY_SURFACE, data, &reply);
  76         return reply.readInt32();
  77     }
  78
  79     virtual status_t clearLayerFrameStats(const sp<IBinder>& handle) const {
  80         Parcel data, reply;
  81         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
  82         data.writeStrongBinder(handle);
  83         remote()->transact(CLEAR_LAYER_FRAME_STATS, data, &reply);
  84         return reply.readInt32();
  85     }
  86
  87     virtual status_t getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const {
  88         Parcel data, reply;
  89         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
  90         data.writeStrongBinder(handle);
  91         remote()->transact(GET_LAYER_FRAME_STATS, data, &reply);
  92         reply.read(*outStats);
  93         return reply.readInt32();
  94     }
  95 };
  96
  97 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
  98
  99 // ----------------------------------------------------------------------
 100
 101 status_t BnSurfaceComposerClient::onTransact(
 102     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
 103 {
 104      switch(code) {
 105         case CREATE_SURFACE: {
 106             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
 107             String8 name = data.readString8();
 108             uint32_t w = data.readInt32();
 109             uint32_t h = data.readInt32();
 110             PixelFormat format = data.readInt32();
 111             uint32_t flags = data.readInt32();
 112             sp<IBinder> handle;
 113             sp<IGraphicBufferProducer> gbp;
 114             status_t result = createSurface(name, w, h, format, flags,
 115                     &handle, &gbp);
 116             reply->writeStrongBinder(handle);
 117             reply->writeStrongBinder(gbp->asBinder());
 118             reply->writeInt32(result);
 119             return NO_ERROR;
 120         } break;
 121         case DESTROY_SURFACE: {
 122             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
 123             reply->writeInt32(destroySurface( data.readStrongBinder() ) );
 124             return NO_ERROR;
 125         } break;
 126        case CLEAR_LAYER_FRAME_STATS: {
 127             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
 128             sp<IBinder> handle = data.readStrongBinder();
 129             status_t result = clearLayerFrameStats(handle);
 130             reply->writeInt32(result);
 131             return NO_ERROR;
 132         } break;
 133         case GET_LAYER_FRAME_STATS: {
 134             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
 135             sp<IBinder> handle = data.readStrongBinder();
 136             FrameStats stats;
 137             status_t result = getLayerFrameStats(handle, &stats);
 138             reply->write(stats);
 139             reply->writeInt32(result);
 140             return NO_ERROR;
 141         } break;
 142         default:
 143             return BBinder::onTransact(code, data, reply, flags);
 144     }
 145 }
 146
 147 }; // namespace android