android_StreamPlayer.cpp revision 485a038f9f0f898227b8ab4218e94c5d56b6ed0b
1/* 2 * Copyright (C) 2010 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//#define USE_LOG SLAndroidLogLevel_Verbose 18 19#include "sles_allinclusive.h" 20#include "android_StreamPlayer.h" 21 22#include <media/IStreamSource.h> 23#include <media/IMediaPlayerService.h> 24#include <media/stagefright/foundation/ADebug.h> 25 26//-------------------------------------------------------------------------------------------------- 27// FIXME abstract out the diff between CMediaPlayer and CAudioPlayer 28 29void android_StreamPlayer_realize_l(CAudioPlayer *ap, const notif_cbf_t cbf, void* notifUser) { 30 SL_LOGV("android_StreamPlayer_realize_l(%p)", ap); 31 32 AudioPlayback_Parameters ap_params; 33 ap_params.sessionId = ap->mSessionId; 34 ap_params.streamType = ap->mStreamType; 35 ap_params.trackcb = NULL; 36 ap_params.trackcbUser = NULL; 37 android::StreamPlayer* splr = new android::StreamPlayer(&ap_params, false /*hasVideo*/); 38 ap->mAPlayer = splr; 39 splr->init(cbf, notifUser); 40} 41 42 43//-------------------------------------------------------------------------------------------------- 44namespace android { 45 46StreamSourceAppProxy::StreamSourceAppProxy( 47 const void* user, bool userIsAudioPlayer, 48 void *context, const void *caller, const sp<CallbackProtector> &callbackProtector) : 49 mUser(user), 50 mUserIsAudioPlayer(userIsAudioPlayer), 51 mAndroidBufferQueue(NULL), 52 mAppContext(context), 53 mCaller(caller), 54 mCallbackProtector(callbackProtector) 55{ 56 SL_LOGV("StreamSourceAppProxy::StreamSourceAppProxy()"); 57 58 if (mUserIsAudioPlayer) { 59 mAndroidBufferQueue = &((CAudioPlayer*)mUser)->mAndroidBufferQueue; 60 } else { 61 mAndroidBufferQueue = &((CMediaPlayer*)mUser)->mAndroidBufferQueue; 62 } 63} 64 65StreamSourceAppProxy::~StreamSourceAppProxy() { 66 SL_LOGD("StreamSourceAppProxy::~StreamSourceAppProxy()"); 67 mListener.clear(); 68 mBuffers.clear(); 69} 70 71const SLuint32 StreamSourceAppProxy::kItemProcessed[NB_BUFFEREVENT_ITEM_FIELDS] = { 72 SL_ANDROID_ITEMKEY_BUFFERQUEUEEVENT, // item key 73 sizeof(SLuint32), // item size 74 SL_ANDROIDBUFFERQUEUEEVENT_PROCESSED // item data 75}; 76 77//-------------------------------------------------- 78// IStreamSource implementation 79void StreamSourceAppProxy::setListener(const sp<IStreamListener> &listener) { 80 Mutex::Autolock _l(mLock); 81 mListener = listener; 82} 83 84void StreamSourceAppProxy::setBuffers(const Vector<sp<IMemory> > &buffers) { 85 mBuffers = buffers; 86} 87 88void StreamSourceAppProxy::onBufferAvailable(size_t index) { 89 //SL_LOGD("StreamSourceAppProxy::onBufferAvailable(%d)", index); 90 91 CHECK_LT(index, mBuffers.size()); 92 sp<IMemory> mem = mBuffers.itemAt(index); 93 SLAint64 length = (SLAint64) mem->size(); 94 95 { 96 Mutex::Autolock _l(mLock); 97 mAvailableBuffers.push_back(index); 98 } 99//SL_LOGD("onBufferAvailable() now %d buffers available in queue", mAvailableBuffers.size()); 100 101 // a new shared mem buffer is available: let's try to fill immediately 102 pullFromBuffQueue(); 103} 104 105void StreamSourceAppProxy::receivedCmd_l(IStreamListener::Command cmd, const sp<AMessage> &msg) { 106 if (mListener != 0) { 107 mListener->issueCommand(cmd, false /* synchronous */, msg); 108 } 109} 110 111void StreamSourceAppProxy::receivedBuffer_l(size_t buffIndex, size_t buffLength) { 112 if (mListener != 0) { 113 mListener->queueBuffer(buffIndex, buffLength); 114 } 115} 116 117//-------------------------------------------------- 118// consumption from ABQ 119void StreamSourceAppProxy::pullFromBuffQueue() { 120 121 if (android::CallbackProtector::enterCbIfOk(mCallbackProtector)) { 122 123 size_t bufferId; 124 void* bufferLoc; 125 size_t buffSize; 126 127 slAndroidBufferQueueCallback callback = NULL; 128 void* callbackPContext = NULL; 129 AdvancedBufferHeader *oldFront = NULL; 130 131 // retrieve data from the buffer queue 132 interface_lock_exclusive(mAndroidBufferQueue); 133 134 if (mAndroidBufferQueue->mState.count != 0) { 135 // SL_LOGD("nbBuffers in ABQ = %u, buffSize=%u",abq->mState.count, buffSize); 136 assert(mAndroidBufferQueue->mFront != mAndroidBufferQueue->mRear); 137 138 oldFront = mAndroidBufferQueue->mFront; 139 AdvancedBufferHeader *newFront = &oldFront[1]; 140 141 // consume events when starting to read data from a buffer for the first time 142 if (oldFront->mDataSizeConsumed == 0) { 143 if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_EOS) { 144 receivedCmd_l(IStreamListener::EOS); 145 } else if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_DISCONTINUITY) { 146 receivedCmd_l(IStreamListener::DISCONTINUITY); 147 } else if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_DISCON_NEWPTS) { 148 sp<AMessage> msg = new AMessage(); 149 msg->setInt64(IStreamListener::kKeyResumeAtPTS, 150 (int64_t)oldFront->mItems.mTsCmdData.mPts); 151 receivedCmd_l(IStreamListener::DISCONTINUITY, msg /*msg*/); 152 } else if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_FORMAT_CHANGE) { 153 sp<AMessage> msg = new AMessage(); 154 // positive value for format change key makes the discontinuity "hard", see key def 155 msg->setInt32(IStreamListener::kKeyFormatChange, (int32_t) 1); 156 receivedCmd_l(IStreamListener::DISCONTINUITY, msg /*msg*/); 157 } 158 oldFront->mItems.mTsCmdData.mTsCmdCode = ANDROID_MP2TSEVENT_NONE; 159 } 160 161 { 162 // we're going to change the shared mem buffer queue, so lock it 163 Mutex::Autolock _l(mLock); 164 if (!mAvailableBuffers.empty()) { 165 bufferId = *mAvailableBuffers.begin(); 166 CHECK_LT(bufferId, mBuffers.size()); 167 sp<IMemory> mem = mBuffers.itemAt(bufferId); 168 bufferLoc = mem->pointer(); 169 buffSize = mem->size(); 170 171 char *pSrc = ((char*)oldFront->mDataBuffer) + oldFront->mDataSizeConsumed; 172 if (oldFront->mDataSizeConsumed + buffSize < oldFront->mDataSize) { 173 // more available than requested, copy as much as requested 174 // consume data: 1/ copy to given destination 175 memcpy(bufferLoc, pSrc, buffSize); 176 // 2/ keep track of how much has been consumed 177 oldFront->mDataSizeConsumed += buffSize; 178 // 3/ notify shared mem listener that new data is available 179 receivedBuffer_l(bufferId, buffSize); 180 mAvailableBuffers.erase(mAvailableBuffers.begin()); 181 } else { 182 // requested as much available or more: consume the whole of the current 183 // buffer and move to the next 184 size_t consumed = oldFront->mDataSize - oldFront->mDataSizeConsumed; 185 //SL_LOGD("consuming rest of buffer: enqueueing=%u", consumed); 186 oldFront->mDataSizeConsumed = oldFront->mDataSize; 187 188 // move queue to next 189 if (newFront == &mAndroidBufferQueue-> 190 mBufferArray[mAndroidBufferQueue->mNumBuffers + 1]) { 191 // reached the end, circle back 192 newFront = mAndroidBufferQueue->mBufferArray; 193 } 194 mAndroidBufferQueue->mFront = newFront; 195 mAndroidBufferQueue->mState.count--; 196 mAndroidBufferQueue->mState.index++; 197 198 if (consumed > 0) { 199 // consume data: 1/ copy to given destination 200 memcpy(bufferLoc, pSrc, consumed); 201 // 2/ keep track of how much has been consumed 202 // here nothing to do because we are done with this buffer 203 // 3/ notify StreamPlayer that new data is available 204 receivedBuffer_l(bufferId, consumed); 205 mAvailableBuffers.erase(mAvailableBuffers.begin()); 206 } 207 208 // data has been consumed, and the buffer queue state has been updated 209 // we will notify the client if applicable 210 if (mAndroidBufferQueue->mCallbackEventsMask & 211 SL_ANDROIDBUFFERQUEUEEVENT_PROCESSED) { 212 callback = mAndroidBufferQueue->mCallback; 213 // save callback data 214 callbackPContext = mAndroidBufferQueue->mContext; 215 } 216 } 217 //SL_LOGD("onBufferAvailable() %d buffers available after enqueue", 218 // mAvailableBuffers.size()); 219 } 220 } 221 222 223 } else { // empty queue 224 SL_LOGD("ABQ empty, starving!"); 225 // signal we're at the end of the content, but don't pause (see note in function) 226 if (mUserIsAudioPlayer) { 227 // FIXME declare this external 228 //audioPlayer_dispatch_headAtEnd_lockPlay((CAudioPlayer*)user, 229 // false /*set state to paused?*/, false); 230 } else { 231 // FIXME implement headAtEnd dispatch for CMediaPlayer 232 } 233 } 234 235 interface_unlock_exclusive(mAndroidBufferQueue); 236 237 // notify client 238 if (NULL != callback) { 239 (*callback)(&mAndroidBufferQueue->mItf, callbackPContext, 240 // oldFront was only initialized in the code path where callback is initialized 241 // so no need to check if it's valid 242 (void *)oldFront->mBufferContext, /* pBufferContext */ 243 (void *)oldFront->mDataBuffer,/* pBufferData */ 244 oldFront->mDataSize, /* dataSize */ 245 // here a buffer is only dequeued when fully consumed 246 oldFront->mDataSize, /* dataUsed */ 247 // no messages during playback other than marking the buffer as processed 248 (SLAndroidBufferItem*)(&kItemProcessed) /* pItems */, 249 3*sizeof(SLuint32) /* itemsLength */ ); 250 } 251 252 mCallbackProtector->exitCb(); 253 } // enterCbIfOk 254} 255 256 257//-------------------------------------------------------------------------------------------------- 258StreamPlayer::StreamPlayer(AudioPlayback_Parameters* params, bool hasVideo) : 259 GenericMediaPlayer(params, hasVideo), 260 mAppProxy(0) 261{ 262 SL_LOGD("StreamPlayer::StreamPlayer()"); 263 264 mPlaybackParams = *params; 265 266} 267 268StreamPlayer::~StreamPlayer() { 269 SL_LOGD("StreamPlayer::~StreamPlayer()"); 270 271 mAppProxy.clear(); 272} 273 274 275void StreamPlayer::onMessageReceived(const sp<AMessage> &msg) { 276 switch (msg->what()) { 277 case kWhatQueueRefilled: 278 onQueueRefilled(); 279 break; 280 281 default: 282 GenericMediaPlayer::onMessageReceived(msg); 283 break; 284 } 285} 286 287 288void StreamPlayer::registerQueueCallback( 289 const void* user, bool userIsAudioPlayer, 290 void *context, 291 const void *caller) { 292 SL_LOGD("StreamPlayer::registerQueueCallback"); 293 Mutex::Autolock _l(mAppProxyLock); 294 295 mAppProxy = new StreamSourceAppProxy( 296 user, userIsAudioPlayer, 297 context, caller, mCallbackProtector); 298 299 CHECK(mAppProxy != 0); 300 SL_LOGD("StreamPlayer::registerQueueCallback end"); 301} 302 303 304/** 305 * Called with a lock on ABQ 306 */ 307void StreamPlayer::queueRefilled_l() { 308 // async notification that the ABQ was refilled 309 (new AMessage(kWhatQueueRefilled, id()))->post(); 310} 311 312 313void StreamPlayer::appClear_l() { 314 // the user of StreamPlayer has cleared its AndroidBufferQueue: 315 // there's no clear() for the shared memory queue, so this is a no-op 316} 317 318 319//-------------------------------------------------- 320// Event handlers 321void StreamPlayer::onPrepare() { 322 SL_LOGD("StreamPlayer::onPrepare()"); 323 Mutex::Autolock _l(mAppProxyLock); 324 if (mAppProxy != 0) { 325 sp<IMediaPlayerService> mediaPlayerService(getMediaPlayerService()); 326 if (mediaPlayerService != NULL) { 327 mPlayer = mediaPlayerService->create(getpid(), mPlayerClient /*IMediaPlayerClient*/, 328 mAppProxy /*IStreamSource*/, mPlaybackParams.sessionId); 329 if (mPlayer == NULL) { 330 SL_LOGE("media player service failed to create player by app proxy"); 331 } 332 } 333 } else { 334 SL_LOGE("Nothing to do here because there is no registered callback"); 335 } 336 if (mPlayer == NULL) { 337 mStateFlags |= kFlagPreparedUnsuccessfully; 338 } 339 GenericMediaPlayer::onPrepare(); 340 SL_LOGD("StreamPlayer::onPrepare() done"); 341} 342 343 344void StreamPlayer::onQueueRefilled() { 345 //SL_LOGD("StreamPlayer::onQueueRefilled()"); 346 Mutex::Autolock _l(mAppProxyLock); 347 if (mAppProxy != 0) { 348 mAppProxy->pullFromBuffQueue(); 349 } 350} 351 352} // namespace android 353