1 /* 2 * Copyright (C) 2021 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_HWC_HOSTUTILS_H 18 #define ANDROID_HWC_HOSTUTILS_H 19 20 #include "Common.h" 21 #include "HostConnection.h" 22 23 namespace android { 24 25 HostConnection* createOrGetHostConnection(); 26 getAndValidateHostConnection(HostConnection ** ppHostCon,ExtendedRCEncoderContext ** ppRcEnc)27inline HWC2::Error getAndValidateHostConnection( 28 HostConnection** ppHostCon, ExtendedRCEncoderContext** ppRcEnc) { 29 *ppHostCon = nullptr; 30 *ppRcEnc = nullptr; 31 32 HostConnection* hostCon = createOrGetHostConnection(); 33 if (!hostCon) { 34 ALOGE("%s: Failed to get host connection\n", __FUNCTION__); 35 return HWC2::Error::NoResources; 36 } 37 ExtendedRCEncoderContext* rcEnc = hostCon->rcEncoder(); 38 if (!rcEnc) { 39 ALOGE("%s: Failed to get renderControl encoder context\n", __FUNCTION__); 40 return HWC2::Error::NoResources; 41 } 42 43 *ppHostCon = hostCon; 44 *ppRcEnc = rcEnc; 45 return HWC2::Error::None; 46 } 47 48 #define DEFINE_AND_VALIDATE_HOST_CONNECTION \ 49 HostConnection* hostCon; \ 50 ExtendedRCEncoderContext* rcEnc; \ 51 { \ 52 HWC2::Error res = getAndValidateHostConnection(&hostCon, &rcEnc); \ 53 if (res != HWC2::Error::None) { \ 54 return res; \ 55 } \ 56 } 57 } // namespace android 58 59 #endif 60