1 /* 2 * Copyright (C) 2014 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 CODEC_BASE_H_ 18 19 #define CODEC_BASE_H_ 20 21 #include <stdint.h> 22 #include <media/IOMX.h> 23 24 #include <media/stagefright/foundation/AHandler.h> 25 26 namespace android { 27 28 struct ABuffer; 29 struct PersistentSurface; 30 31 struct CodecBase : public AHandler { 32 enum { 33 kWhatFillThisBuffer = 'fill', 34 kWhatDrainThisBuffer = 'drai', 35 kWhatEOS = 'eos ', 36 kWhatShutdownCompleted = 'scom', 37 kWhatFlushCompleted = 'fcom', 38 kWhatOutputFormatChanged = 'outC', 39 kWhatError = 'erro', 40 kWhatComponentAllocated = 'cAll', 41 kWhatComponentConfigured = 'cCon', 42 kWhatInputSurfaceCreated = 'isfc', 43 kWhatInputSurfaceAccepted = 'isfa', 44 kWhatSignaledInputEOS = 'seos', 45 kWhatBuffersAllocated = 'allc', 46 kWhatOutputFramesRendered = 'outR', 47 }; 48 49 virtual void setNotificationMessage(const sp<AMessage> &msg) = 0; 50 51 virtual void initiateAllocateComponent(const sp<AMessage> &msg) = 0; 52 virtual void initiateConfigureComponent(const sp<AMessage> &msg) = 0; 53 virtual void initiateCreateInputSurface() = 0; 54 virtual void initiateSetInputSurface( 55 const sp<PersistentSurface> &surface) = 0; 56 virtual void initiateStart() = 0; 57 virtual void initiateShutdown(bool keepComponentAllocated = false) = 0; 58 59 // require an explicit message handler 60 virtual void onMessageReceived(const sp<AMessage> &msg) = 0; 61 setSurfaceCodecBase62 virtual status_t setSurface(const sp<Surface> &surface) { return INVALID_OPERATION; } 63 64 virtual void signalFlush() = 0; 65 virtual void signalResume() = 0; 66 67 virtual void signalRequestIDRFrame() = 0; 68 virtual void signalSetParameters(const sp<AMessage> &msg) = 0; 69 virtual void signalEndOfInputStream() = 0; 70 71 struct PortDescription : public RefBase { 72 virtual size_t countBuffers() = 0; 73 virtual IOMX::buffer_id bufferIDAt(size_t index) const = 0; 74 virtual sp<ABuffer> bufferAt(size_t index) const = 0; 75 76 protected: 77 PortDescription(); 78 virtual ~PortDescription(); 79 80 private: 81 DISALLOW_EVIL_CONSTRUCTORS(PortDescription); 82 }; 83 84 protected: 85 CodecBase(); 86 virtual ~CodecBase(); 87 88 private: 89 DISALLOW_EVIL_CONSTRUCTORS(CodecBase); 90 }; 91 92 } // namespace android 93 94 #endif // CODEC_BASE_H_ 95 96