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 #ifndef HDCP_API_H_ 18 19 #define HDCP_API_H_ 20 21 #include <utils/Errors.h> 22 23 namespace android { 24 25 struct HDCPModule { 26 typedef void (*ObserverFunc)(void *cookie, int msg, int ext1, int ext2); 27 28 // The msg argument in calls to the observer notification function. 29 enum { 30 // Sent in response to a call to "HDCPModule::initAsync" once 31 // initialization has either been successfully completed, 32 // i.e. the HDCP session is now fully setup (AKE, Locality Check, 33 // SKE and any authentication with repeaters completed) or failed. 34 // ext1 should be a suitable error code (status_t), ext2 is 35 // unused. 36 HDCP_INITIALIZATION_COMPLETE, 37 HDCP_INITIALIZATION_FAILED, 38 39 // Sent upon completion of a call to "HDCPModule::shutdownAsync". 40 // ext1 should be a suitable error code, ext2 is unused. 41 HDCP_SHUTDOWN_COMPLETE, 42 HDCP_SHUTDOWN_FAILED, 43 44 HDCP_UNAUTHENTICATED_CONNECTION, 45 HDCP_UNAUTHORIZED_CONNECTION, 46 HDCP_REVOKED_CONNECTION, 47 HDCP_TOPOLOGY_EXECEEDED, 48 HDCP_UNKNOWN_ERROR, 49 }; 50 51 // Module can call the notification function to signal completion/failure 52 // of asynchronous operations (such as initialization) or out of band 53 // events. 54 HDCPModule(void *cookie, ObserverFunc observerNotify) {}; 55 56 virtual ~HDCPModule() {}; 57 58 // Request to setup an HDCP session with the specified host listening 59 // on the specified port. 60 virtual status_t initAsync(const char *host, unsigned port) = 0; 61 62 // Request to shutdown the active HDCP session. 63 virtual status_t shutdownAsync() = 0; 64 65 // Encrypt a data according to the HDCP spec. The data is to be 66 // encrypted in-place, only size bytes of data should be read/write, 67 // even if the size is not a multiple of 128 bit (16 bytes). 68 // This operation is to be synchronous, i.e. this call does not return 69 // until outData contains size bytes of encrypted data. 70 // streamCTR will be assigned by the caller (to 0 for the first PES stream, 71 // 1 for the second and so on) 72 // inputCTR will be maintained by the callee for each PES stream. 73 virtual status_t encrypt( 74 const void *inData, size_t size, uint32_t streamCTR, 75 uint64_t *outInputCTR, void *outData) = 0; 76 77 private: 78 HDCPModule(const HDCPModule &); 79 HDCPModule &operator=(const HDCPModule &); 80 }; 81 82 } // namespace android 83 84 // A shared library exporting the following method should be included to 85 // support HDCP functionality. The shared library must be called 86 // "libstagefright_hdcp.so", it will be dynamically loaded into the 87 // mediaserver process. 88 extern "C" { 89 extern android::HDCPModule *createHDCPModule( 90 void *cookie, android::HDCPModule::ObserverFunc); 91 } 92 93 #endif // HDCP_API_H_ 94 95
