MediaCodec.h revision 717fd3d4328abf524978ce9c125ab8ae8d6bffad
1/* 2 * Copyright 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 MEDIA_CODEC_H_ 18 19#define MEDIA_CODEC_H_ 20 21#include <gui/ISurfaceTexture.h> 22#include <media/hardware/CryptoAPI.h> 23#include <media/stagefright/foundation/AHandler.h> 24#include <utils/Vector.h> 25 26namespace android { 27 28struct ABuffer; 29struct ACodec; 30struct AMessage; 31struct AString; 32struct ICrypto; 33struct SoftwareRenderer; 34struct SurfaceTextureClient; 35 36struct MediaCodec : public AHandler { 37 enum ConfigureFlags { 38 CONFIGURE_FLAG_ENCODE = 1, 39 }; 40 41 enum BufferFlags { 42 BUFFER_FLAG_SYNCFRAME = 1, 43 BUFFER_FLAG_CODECCONFIG = 2, 44 BUFFER_FLAG_EOS = 4, 45 }; 46 47 static sp<MediaCodec> CreateByType( 48 const sp<ALooper> &looper, const char *mime, bool encoder); 49 50 static sp<MediaCodec> CreateByComponentName( 51 const sp<ALooper> &looper, const char *name); 52 53 status_t configure( 54 const sp<AMessage> &format, 55 const sp<SurfaceTextureClient> &nativeWindow, 56 const sp<ICrypto> &crypto, 57 uint32_t flags); 58 59 status_t start(); 60 61 // Returns to a state in which the component remains allocated but 62 // unconfigured. 63 status_t stop(); 64 65 // Client MUST call release before releasing final reference to this 66 // object. 67 status_t release(); 68 69 status_t flush(); 70 71 status_t queueInputBuffer( 72 size_t index, 73 size_t offset, 74 size_t size, 75 int64_t presentationTimeUs, 76 uint32_t flags, 77 AString *errorDetailMsg = NULL); 78 79 status_t queueSecureInputBuffer( 80 size_t index, 81 size_t offset, 82 const CryptoPlugin::SubSample *subSamples, 83 size_t numSubSamples, 84 const uint8_t key[16], 85 const uint8_t iv[16], 86 CryptoPlugin::Mode mode, 87 int64_t presentationTimeUs, 88 uint32_t flags, 89 AString *errorDetailMsg = NULL); 90 91 status_t dequeueInputBuffer(size_t *index, int64_t timeoutUs = 0ll); 92 93 status_t dequeueOutputBuffer( 94 size_t *index, 95 size_t *offset, 96 size_t *size, 97 int64_t *presentationTimeUs, 98 uint32_t *flags, 99 int64_t timeoutUs = 0ll); 100 101 status_t renderOutputBufferAndRelease(size_t index); 102 status_t releaseOutputBuffer(size_t index); 103 104 status_t getOutputFormat(sp<AMessage> *format) const; 105 106 status_t getInputBuffers(Vector<sp<ABuffer> > *buffers) const; 107 status_t getOutputBuffers(Vector<sp<ABuffer> > *buffers) const; 108 109 status_t requestIDRFrame(); 110 111 // Notification will be posted once there "is something to do", i.e. 112 // an input/output buffer has become available, a format change is 113 // pending, an error is pending. 114 void requestActivityNotification(const sp<AMessage> ¬ify); 115 116 status_t getName(AString *componentName) const; 117 118protected: 119 virtual ~MediaCodec(); 120 virtual void onMessageReceived(const sp<AMessage> &msg); 121 122private: 123 enum State { 124 UNINITIALIZED, 125 INITIALIZING, 126 INITIALIZED, 127 CONFIGURING, 128 CONFIGURED, 129 STARTING, 130 STARTED, 131 FLUSHING, 132 STOPPING, 133 RELEASING, 134 }; 135 136 enum { 137 kPortIndexInput = 0, 138 kPortIndexOutput = 1, 139 }; 140 141 enum { 142 kWhatInit = 'init', 143 kWhatConfigure = 'conf', 144 kWhatStart = 'strt', 145 kWhatStop = 'stop', 146 kWhatRelease = 'rele', 147 kWhatDequeueInputBuffer = 'deqI', 148 kWhatQueueInputBuffer = 'queI', 149 kWhatDequeueOutputBuffer = 'deqO', 150 kWhatReleaseOutputBuffer = 'relO', 151 kWhatGetBuffers = 'getB', 152 kWhatFlush = 'flus', 153 kWhatGetOutputFormat = 'getO', 154 kWhatDequeueInputTimedOut = 'dITO', 155 kWhatDequeueOutputTimedOut = 'dOTO', 156 kWhatCodecNotify = 'codc', 157 kWhatRequestIDRFrame = 'ridr', 158 kWhatRequestActivityNotification = 'racN', 159 kWhatGetName = 'getN', 160 }; 161 162 enum { 163 kFlagIsSoftwareCodec = 1, 164 kFlagOutputFormatChanged = 2, 165 kFlagOutputBuffersChanged = 4, 166 kFlagStickyError = 8, 167 kFlagDequeueInputPending = 16, 168 kFlagDequeueOutputPending = 32, 169 kFlagIsSecure = 64, 170 }; 171 172 struct BufferInfo { 173 void *mBufferID; 174 sp<ABuffer> mData; 175 sp<ABuffer> mEncryptedData; 176 sp<AMessage> mNotify; 177 bool mOwnedByClient; 178 }; 179 180 State mState; 181 sp<ALooper> mLooper; 182 sp<ALooper> mCodecLooper; 183 sp<ACodec> mCodec; 184 AString mComponentName; 185 uint32_t mReplyID; 186 uint32_t mFlags; 187 sp<SurfaceTextureClient> mNativeWindow; 188 SoftwareRenderer *mSoftRenderer; 189 sp<AMessage> mOutputFormat; 190 191 List<size_t> mAvailPortBuffers[2]; 192 Vector<BufferInfo> mPortBuffers[2]; 193 194 int32_t mDequeueInputTimeoutGeneration; 195 uint32_t mDequeueInputReplyID; 196 197 int32_t mDequeueOutputTimeoutGeneration; 198 uint32_t mDequeueOutputReplyID; 199 200 sp<ICrypto> mCrypto; 201 202 List<sp<ABuffer> > mCSD; 203 204 sp<AMessage> mActivityNotify; 205 206 MediaCodec(const sp<ALooper> &looper); 207 208 static status_t PostAndAwaitResponse( 209 const sp<AMessage> &msg, sp<AMessage> *response); 210 211 status_t init(const char *name, bool nameIsType, bool encoder); 212 213 void setState(State newState); 214 void returnBuffersToCodec(); 215 void returnBuffersToCodecOnPort(int32_t portIndex); 216 size_t updateBuffers(int32_t portIndex, const sp<AMessage> &msg); 217 status_t onQueueInputBuffer(const sp<AMessage> &msg); 218 status_t onReleaseOutputBuffer(const sp<AMessage> &msg); 219 ssize_t dequeuePortBuffer(int32_t portIndex); 220 221 bool handleDequeueInputBuffer(uint32_t replyID, bool newRequest = false); 222 bool handleDequeueOutputBuffer(uint32_t replyID, bool newRequest = false); 223 void cancelPendingDequeueOperations(); 224 225 void extractCSD(const sp<AMessage> &format); 226 status_t queueCSDInputBuffer(size_t bufferIndex); 227 228 status_t setNativeWindow( 229 const sp<SurfaceTextureClient> &surfaceTextureClient); 230 231 void postActivityNotificationIfPossible(); 232 233 DISALLOW_EVIL_CONSTRUCTORS(MediaCodec); 234}; 235 236} // namespace android 237 238#endif // MEDIA_CODEC_H_ 239