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 OMX_COMPONENT_BASE_H_ 18 19 #define OMX_COMPONENT_BASE_H_ 20 21 #include <OMX_Component.h> 22 23 namespace android { 24 25 struct OMXComponentBase { 26 OMXComponentBase( 27 const OMX_CALLBACKTYPE *callbacks, 28 OMX_PTR appData); 29 30 virtual ~OMXComponentBase(); 31 32 virtual OMX_ERRORTYPE sendCommand( 33 OMX_COMMANDTYPE cmd, OMX_U32 param, OMX_PTR cmdData) = 0; 34 35 virtual OMX_ERRORTYPE getParameter( 36 OMX_INDEXTYPE index, OMX_PTR params) = 0; 37 38 virtual OMX_ERRORTYPE setParameter( 39 OMX_INDEXTYPE index, const OMX_PTR params) = 0; 40 41 virtual OMX_ERRORTYPE getConfig( 42 OMX_INDEXTYPE index, OMX_PTR config) = 0; 43 44 virtual OMX_ERRORTYPE setConfig( 45 OMX_INDEXTYPE index, const OMX_PTR config) = 0; 46 47 virtual OMX_ERRORTYPE getExtensionIndex( 48 const OMX_STRING name, OMX_INDEXTYPE *index) = 0; 49 50 virtual OMX_ERRORTYPE useBuffer( 51 OMX_BUFFERHEADERTYPE **bufHdr, 52 OMX_U32 portIndex, 53 OMX_PTR appPrivate, 54 OMX_U32 size, 55 OMX_U8 *buffer) = 0; 56 57 virtual OMX_ERRORTYPE allocateBuffer( 58 OMX_BUFFERHEADERTYPE **bufHdr, 59 OMX_U32 portIndex, 60 OMX_PTR appPrivate, 61 OMX_U32 size) = 0; 62 63 virtual OMX_ERRORTYPE freeBuffer( 64 OMX_U32 portIndex, 65 OMX_BUFFERHEADERTYPE *buffer) = 0; 66 67 virtual OMX_ERRORTYPE emptyThisBuffer(OMX_BUFFERHEADERTYPE *buffer) = 0; 68 virtual OMX_ERRORTYPE fillThisBuffer(OMX_BUFFERHEADERTYPE *buffer) = 0; 69 70 virtual OMX_ERRORTYPE enumerateRoles(OMX_U8 *role, OMX_U32 index) = 0; 71 72 virtual OMX_ERRORTYPE getState(OMX_STATETYPE *state) = 0; 73 74 // Wraps a given OMXComponentBase instance into an OMX_COMPONENTTYPE 75 // as required by OpenMAX APIs. 76 static OMX_COMPONENTTYPE *MakeComponent(OMXComponentBase *base); 77 78 protected: 79 void postEvent(OMX_EVENTTYPE event, OMX_U32 param1, OMX_U32 param2); 80 void postFillBufferDone(OMX_BUFFERHEADERTYPE *bufHdr); 81 void postEmptyBufferDone(OMX_BUFFERHEADERTYPE *bufHdr); 82 83 private: 84 void setComponentHandle(OMX_COMPONENTTYPE *handle); 85 86 const OMX_CALLBACKTYPE *mCallbacks; 87 OMX_PTR mAppData; 88 OMX_COMPONENTTYPE *mComponentHandle; 89 90 OMXComponentBase(const OMXComponentBase &); 91 OMXComponentBase &operator=(const OMXComponentBase &); 92 }; 93 94 } // namespace android 95 96 #endif // OMX_COMPONENT_BASE_H_ 97
