1 /* 2 * Copyright (C) 2010 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_GUI_VIEW_SURFACE_H 18 #define ANDROID_GUI_VIEW_SURFACE_H 19 20 #include <utils/Errors.h> 21 #include <utils/StrongPointer.h> 22 #include <utils/String16.h> 23 24 #include <binder/IBinder.h> 25 #include <binder/Parcelable.h> 26 27 #include <gui/Flags.h> 28 #include <gui/IGraphicBufferProducer.h> 29 #include <gui/Surface.h> 30 31 namespace android { 32 33 namespace view { 34 35 /** 36 * A simple holder for an IGraphicBufferProducer, to match the managed-side 37 * android.view.Surface parcelable behavior. 38 * 39 * This implements android/view/Surface.aidl 40 * 41 * TODO: Convert IGraphicBufferProducer into AIDL so that it can be directly 42 * used in managed Binder calls. 43 */ 44 class Surface : public Parcelable { 45 public: 46 47 String16 name; 48 sp<IGraphicBufferProducer> graphicBufferProducer; 49 sp<IBinder> surfaceControlHandle; 50 51 #if WB_LIBCAMERASERVICE_WITH_DEPENDENCIES 52 // functions used to convert to a parcelable Surface so it can be passed over binder. 53 static Surface fromSurface(const sp<android::Surface>& surface); 54 sp<android::Surface> toSurface() const; 55 56 status_t getUniqueId(/* out */ uint64_t* id) const; 57 58 bool isEmpty() const; 59 60 bool operator==(const Surface& other) const { 61 return graphicBufferProducer == other.graphicBufferProducer; 62 } 63 bool operator!=(const Surface& other) const { return !(*this == other); } 64 bool operator==(const sp<android::Surface> other) const { 65 if (other == nullptr) return graphicBufferProducer == nullptr; 66 return graphicBufferProducer == other->getIGraphicBufferProducer(); 67 } 68 bool operator!=(const sp<android::Surface> other) const { return !(*this == other); } 69 bool operator<(const Surface& other) const { 70 return graphicBufferProducer < other.graphicBufferProducer; 71 } 72 bool operator>(const Surface& other) const { return other < *this; } 73 #endif 74 75 virtual status_t writeToParcel(Parcel* parcel) const override; 76 virtual status_t readFromParcel(const Parcel* parcel) override; 77 78 // nameAlreadyWritten set to true by Surface.java, because it splits 79 // Parceling itself between managed and native code, so it only wants a part 80 // of the full parceling to happen on its native side. 81 status_t writeToParcel(Parcel* parcel, bool nameAlreadyWritten) const; 82 83 // nameAlreadyRead set to true by Surface.java, because it splits 84 // Parceling itself between managed and native code, so it only wants a part 85 // of the full parceling to happen on its native side. 86 status_t readFromParcel(const Parcel* parcel, bool nameAlreadyRead); 87 88 std::string toString() const; 89 90 private: 91 static String16 readMaybeEmptyString16(const Parcel* parcel); 92 }; 93 94 } // namespace view 95 } // namespace android 96 97 #endif // ANDROID_GUI_VIEW_SURFACE_H 98