1 /* 2 * Copyright (C) 2016 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 _OMX_FENCE_PARCELABLE_ 18 #define _OMX_FENCE_PARCELABLE_ 19 20 #include <binder/Parcel.h> 21 22 namespace android { 23 24 struct OMXFenceParcelable; 25 26 // This is needed temporarily for the OMX HIDL transition. 27 namespace hardware { 28 struct hidl_handle; 29 namespace media { namespace omx { namespace V1_0 { 30 namespace implementation { 31 void wrapAs(::android::OMXFenceParcelable* l, 32 ::android::hardware::hidl_handle const& t); 33 bool convertTo(::android::OMXFenceParcelable* l, 34 ::android::hardware::hidl_handle const& t); 35 } 36 namespace utils { 37 void wrapAs(::android::OMXFenceParcelable* l, 38 ::android::hardware::hidl_handle const& t); 39 bool convertTo(::android::OMXFenceParcelable* l, 40 ::android::hardware::hidl_handle const& t); 41 } 42 }}}} 43 44 struct OMXFenceParcelable : public Parcelable { 45 OMXFenceParcelable() : mFenceFd(-1) {} 46 OMXFenceParcelable(int fenceFd) : mFenceFd(fenceFd) {} 47 48 int get() const { return mFenceFd; } 49 50 status_t readFromParcel(const Parcel* parcel) override; 51 status_t writeToParcel(Parcel* parcel) const override; 52 53 private: 54 // Disable copy ctor and operator= 55 OMXFenceParcelable(const OMXFenceParcelable &); 56 OMXFenceParcelable &operator=(const OMXFenceParcelable &); 57 58 int mFenceFd; 59 60 // This is needed temporarily for OMX HIDL transition. 61 friend void (::android::hardware::media::omx::V1_0::implementation:: 62 wrapAs)(OMXFenceParcelable* l, 63 ::android::hardware::hidl_handle const& t); 64 friend bool (::android::hardware::media::omx::V1_0::implementation:: 65 convertTo)(OMXFenceParcelable* l, 66 ::android::hardware::hidl_handle const& t); 67 friend void (::android::hardware::media::omx::V1_0::utils:: 68 wrapAs)(OMXFenceParcelable* l, 69 ::android::hardware::hidl_handle const& t); 70 friend bool (::android::hardware::media::omx::V1_0::utils:: 71 convertTo)(OMXFenceParcelable* l, 72 ::android::hardware::hidl_handle const& t); 73 }; 74 75 inline status_t OMXFenceParcelable::readFromParcel(const Parcel* parcel) { 76 int32_t haveFence; 77 status_t err = parcel->readInt32(&haveFence); 78 if (err == OK && haveFence) { 79 int fd = ::dup(parcel->readFileDescriptor()); 80 if (fd < 0) { 81 return fd; 82 } 83 mFenceFd = fd; 84 } 85 return err; 86 } 87 88 inline status_t OMXFenceParcelable::writeToParcel(Parcel* parcel) const { 89 status_t err = parcel->writeInt32(mFenceFd >= 0); 90 if (err == OK && mFenceFd >= 0) { 91 err = parcel->writeFileDescriptor(mFenceFd, true /* takeOwnership */); 92 } 93 return err; 94 } 95 96 } // namespace android 97 98 #endif // _OMX_FENCE_PARCELABLE_ 99
