1 /* 2 * Copyright (C) 2009 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 DATA_SOURCE_H_ 18 19 #define DATA_SOURCE_H_ 20 21 #include <sys/types.h> 22 #include <media/stagefright/MediaErrors.h> 23 #include <media/DataSourceBase.h> 24 #include <media/IDataSource.h> 25 #include <utils/Errors.h> 26 #include <utils/RefBase.h> 27 #include <utils/threads.h> 28 #include <drm/DrmManagerClient.h> 29 30 31 namespace android { 32 33 class String8; 34 35 class DataSource : public DataSourceBase, public virtual RefBase { 36 public: DataSource()37 DataSource() {} 38 39 // returns a pointer to IDataSource if it is wrapped. getIDataSource()40 virtual sp<IDataSource> getIDataSource() const { 41 return nullptr; 42 } 43 toString()44 virtual String8 toString() { 45 return String8("<unspecified>"); 46 } 47 reconnectAtOffset(off64_t)48 virtual status_t reconnectAtOffset(off64_t /*offset*/) { 49 return ERROR_UNSUPPORTED; 50 } 51 52 //////////////////////////////////////////////////////////////////////////// 53 54 // for DRM 55 virtual sp<DecryptHandle> DrmInitialization(const char * /*mime*/ = NULL) { 56 return NULL; 57 } 58 getUri()59 virtual String8 getUri() { 60 return String8(); 61 } 62 getUri(char * uriString,size_t bufferSize)63 virtual bool getUri(char *uriString, size_t bufferSize) final { 64 int ret = snprintf(uriString, bufferSize, "%s", getUri().c_str()); 65 return ret >= 0 && static_cast<size_t>(ret) < bufferSize; 66 } 67 getMIMEType()68 virtual String8 getMIMEType() const { 69 return String8("application/octet-stream"); 70 } 71 72 protected: ~DataSource()73 virtual ~DataSource() {} 74 75 private: 76 DataSource(const DataSource &); 77 DataSource &operator=(const DataSource &); 78 }; 79 80 } // namespace android 81 82 #endif // DATA_SOURCE_H_ 83