android_StreamPlayer.cpp revision 37dc2fccf3f122b79ebd554de209d0a3c94ae161
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 <media/IMediaPlayerService.h> 21 22//-------------------------------------------------------------------------------------------------- 23// FIXME abstract out the diff between CMediaPlayer and CAudioPlayer 24 25void android_StreamPlayer_realize_l(CAudioPlayer *ap, const notif_cbf_t cbf, void* notifUser) { 26 SL_LOGI("android_StreamPlayer_realize_l(%p)", ap); 27 28 AudioPlayback_Parameters ap_params; 29 ap_params.sessionId = ap->mSessionId; 30 ap_params.streamType = ap->mStreamType; 31 ap_params.trackcb = NULL; 32 ap_params.trackcbUser = NULL; 33 android::StreamPlayer* splr = new android::StreamPlayer(&ap_params, false /*hasVideo*/); 34 ap->mAPlayer = splr; 35 splr->init(cbf, notifUser); 36} 37 38 39//-------------------------------------------------------------------------------------------------- 40namespace android { 41 42StreamSourceAppProxy::StreamSourceAppProxy( 43 const void* user, bool userIsAudioPlayer, 44 void *context, const void *caller) : 45 mUser(user), 46 mUserIsAudioPlayer(userIsAudioPlayer), 47 mAndroidBufferQueue(NULL), 48 mAppContext(context), 49 mCaller(caller) 50{ 51 SL_LOGI("StreamSourceAppProxy::StreamSourceAppProxy()"); 52 53 if (mUserIsAudioPlayer) { 54 mAndroidBufferQueue = &((CAudioPlayer*)mUser)->mAndroidBufferQueue; 55 } else { 56 mAndroidBufferQueue = &((CMediaPlayer*)mUser)->mAndroidBufferQueue; 57 } 58} 59 60StreamSourceAppProxy::~StreamSourceAppProxy() { 61 SL_LOGI("StreamSourceAppProxy::~StreamSourceAppProxy()"); 62 mListener.clear(); 63 mBuffers.clear(); 64} 65 66//-------------------------------------------------- 67// IStreamSource implementation 68void StreamSourceAppProxy::setListener(const sp<IStreamListener> &listener) { 69 Mutex::Autolock _l(mLock); 70 mListener = listener; 71} 72 73void StreamSourceAppProxy::setBuffers(const Vector<sp<IMemory> > &buffers) { 74 mBuffers = buffers; 75} 76 77void StreamSourceAppProxy::onBufferAvailable(size_t index) { 78 //SL_LOGD("StreamSourceAppProxy::onBufferAvailable(%d)", index); 79 80 CHECK_LT(index, mBuffers.size()); 81 sp<IMemory> mem = mBuffers.itemAt(index); 82 SLAint64 length = (SLAint64) mem->size(); 83 84 { 85 Mutex::Autolock _l(mLock); 86 mAvailableBuffers.push_back(index); 87 } 88//SL_LOGD("onBufferAvailable() now %d buffers available in queue", mAvailableBuffers.size()); 89 90 // a new shared mem buffer is available: let's try to fill immediately 91 pullFromBuffQueue(); 92} 93 94void StreamSourceAppProxy::receivedCmd_l(IStreamListener::Command cmd, const sp<AMessage> &msg) { 95 if (mListener != 0) { 96 mListener->issueCommand(cmd, false /* synchronous */, msg); 97 } 98} 99 100void StreamSourceAppProxy::receivedBuffer_l(size_t buffIndex, size_t buffLength) { 101 if (mListener != 0) { 102 mListener->queueBuffer(buffIndex, buffLength); 103 } 104} 105 106//-------------------------------------------------- 107// consumption from ABQ 108void StreamSourceAppProxy::pullFromBuffQueue() { 109 110 size_t bufferId; 111 void* bufferLoc; 112 size_t buffSize; 113 114 slAndroidBufferQueueCallback callback = NULL; 115 void* callbackPContext = NULL; 116 AdvancedBufferHeader *oldFront = NULL; 117 118 // retrieve data from the buffer queue 119 interface_lock_exclusive(mAndroidBufferQueue); 120 121 if (mAndroidBufferQueue->mState.count != 0) { 122 // SL_LOGD("nbBuffers in ABQ = %lu, buffSize=%lu",abq->mState.count, buffSize); 123 assert(mAndroidBufferQueue->mFront != mAndroidBufferQueue->mRear); 124 125 oldFront = mAndroidBufferQueue->mFront; 126 AdvancedBufferHeader *newFront = &oldFront[1]; 127 128 // consume events when starting to read data from a buffer for the first time 129 if (oldFront->mDataSizeConsumed == 0) { 130 if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_EOS) { 131 receivedCmd_l(IStreamListener::EOS); 132 } else if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_DISCONTINUITY) { 133 receivedCmd_l(IStreamListener::DISCONTINUITY); 134 } else if (oldFront->mItems.mTsCmdData.mTsCmdCode & ANDROID_MP2TSEVENT_DISCON_NEWPTS) { 135 sp<AMessage> msg = new AMessage(); 136 msg->setInt64(IStreamListener::kKeyResumeAtPTS, 137 (int64_t)oldFront->mItems.mTsCmdData.mPts); 138 receivedCmd_l(IStreamListener::DISCONTINUITY, msg /*msg*/); 139 } 140 oldFront->mItems.mTsCmdData.mTsCmdCode = ANDROID_MP2TSEVENT_NONE; 141 } 142 143 { 144 // we're going to change the shared mem buffer queue, so lock it 145 Mutex::Autolock _l(mLock); 146 if (!mAvailableBuffers.empty()) { 147 bufferId = *mAvailableBuffers.begin(); 148 CHECK_LT(bufferId, mBuffers.size()); 149 sp<IMemory> mem = mBuffers.itemAt(bufferId); 150 bufferLoc = mem->pointer(); 151 buffSize = mem->size(); 152 153 char *pSrc = ((char*)oldFront->mDataBuffer) + oldFront->mDataSizeConsumed; 154 if (oldFront->mDataSizeConsumed + buffSize < oldFront->mDataSize) { 155 // more available than requested, copy as much as requested 156 // consume data: 1/ copy to given destination 157 memcpy(bufferLoc, pSrc, buffSize); 158 // 2/ keep track of how much has been consumed 159 oldFront->mDataSizeConsumed += buffSize; 160 // 3/ notify shared mem listener that new data is available 161 receivedBuffer_l(bufferId, buffSize); 162 mAvailableBuffers.erase(mAvailableBuffers.begin()); 163 } else { 164 // requested as much available or more: consume the whole of the current 165 // buffer and move to the next 166 size_t consumed = oldFront->mDataSize - oldFront->mDataSizeConsumed; 167 //SL_LOGD("consuming rest of buffer: enqueueing=%ld", consumed); 168 oldFront->mDataSizeConsumed = oldFront->mDataSize; 169 170 // move queue to next 171 if (newFront == &mAndroidBufferQueue-> 172 mBufferArray[mAndroidBufferQueue->mNumBuffers + 1]) { 173 // reached the end, circle back 174 newFront = mAndroidBufferQueue->mBufferArray; 175 } 176 mAndroidBufferQueue->mFront = newFront; 177 mAndroidBufferQueue->mState.count--; 178 mAndroidBufferQueue->mState.index++; 179 180 if (consumed > 0) { 181 // consume data: 1/ copy to given destination 182 memcpy(bufferLoc, pSrc, consumed); 183 // 2/ keep track of how much has been consumed 184 // here nothing to do because we are done with this buffer 185 // 3/ notify StreamPlayer that new data is available 186 receivedBuffer_l(bufferId, consumed); 187 mAvailableBuffers.erase(mAvailableBuffers.begin()); 188 } 189 190 // data has been consumed, and the buffer queue state has been updated 191 // we will notify the client if applicable 192 callback = mAndroidBufferQueue->mCallback; 193 // save callback data 194 callbackPContext = mAndroidBufferQueue->mContext; 195 } 196 //SL_LOGD("onBufferAvailable() %d buffers available after enqueue", 197 // mAvailableBuffers.size()); 198 } 199 } 200 201 202 } else { // empty queue 203 SL_LOGD("ABQ empty, starving!"); 204 // signal we're at the end of the content, but don't pause (see note in function) 205 if (mUserIsAudioPlayer) { 206 // FIXME declare this external 207 //audioPlayer_dispatch_headAtEnd_lockPlay((CAudioPlayer*)user, 208 // false /*set state to paused?*/, false); 209 } else { 210 // FIXME implement headAtEnd dispatch for CMediaPlayer 211 } 212 } 213 214 interface_unlock_exclusive(mAndroidBufferQueue); 215 216 // notify client 217 if (NULL != callback) { 218 // oldFront was only initialized in the code path where callback is initialized 219 // so no need to check if it's valid 220 (*callback)(&mAndroidBufferQueue->mItf, callbackPContext, 221 (void *)oldFront->mBufferContext, /* pBufferContext */ 222 (void *)oldFront->mDataBuffer,/* pBufferData */ 223 oldFront->mDataSize, /* dataSize */ 224 // here a buffer is only dequeued when fully consumed 225 oldFront->mDataSize, /* dataUsed */ 226 // no messages during playback 227 0, /* itemsLength */ 228 NULL /* pItems */); 229 } 230} 231 232 233//-------------------------------------------------------------------------------------------------- 234StreamPlayer::StreamPlayer(AudioPlayback_Parameters* params, bool hasVideo) : 235 GenericMediaPlayer(params, hasVideo), 236 mAppProxy(0) 237{ 238 SL_LOGI("StreamPlayer::StreamPlayer()"); 239 240 mPlaybackParams = *params; 241 242} 243 244StreamPlayer::~StreamPlayer() { 245 SL_LOGI("StreamPlayer::~StreamPlayer()"); 246 247 mAppProxy.clear(); 248} 249 250 251void StreamPlayer::onMessageReceived(const sp<AMessage> &msg) { 252 switch (msg->what()) { 253 case kWhatQueueRefilled: 254 onQueueRefilled(); 255 break; 256 257 default: 258 GenericMediaPlayer::onMessageReceived(msg); 259 break; 260 } 261} 262 263 264void StreamPlayer::registerQueueCallback( 265 const void* user, bool userIsAudioPlayer, 266 void *context, 267 const void *caller) { 268 SL_LOGI("StreamPlayer::registerQueueCallback"); 269 Mutex::Autolock _l(mAppProxyLock); 270 271 mAppProxy = new StreamSourceAppProxy( 272 user, userIsAudioPlayer, 273 context, caller); 274 275 CHECK(mAppProxy != 0); 276 SL_LOGI("StreamPlayer::registerQueueCallback end"); 277} 278 279 280/** 281 * Called with a lock on ABQ 282 */ 283void StreamPlayer::queueRefilled_l() { 284 // async notification that the ABQ was refilled 285 (new AMessage(kWhatQueueRefilled, id()))->post(); 286} 287 288 289void StreamPlayer::appClear_l() { 290 // the user of StreamPlayer has cleared its AndroidBufferQueue: 291 // there's no clear() for the shared memory queue, so this is a no-op 292} 293 294 295//-------------------------------------------------- 296// Event handlers 297void StreamPlayer::onPrepare() { 298 SL_LOGI("StreamPlayer::onPrepare()"); 299 Mutex::Autolock _l(mAppProxyLock); 300 if (mAppProxy != 0) { 301 mPlayer = mMediaPlayerService->create(getpid(), mPlayerClient /*IMediaPlayerClient*/, 302 mAppProxy /*IStreamSource*/, mPlaybackParams.sessionId); 303 // blocks until mPlayer is prepared 304 GenericMediaPlayer::onPrepare(); 305 SL_LOGI("StreamPlayer::onPrepare() done"); 306 } else { 307 SL_LOGE("Nothing to do here because there is no registered callback"); 308 } 309} 310 311 312void StreamPlayer::onQueueRefilled() { 313 //SL_LOGD("StreamPlayer::onQueueRefilled()"); 314 Mutex::Autolock _l(mAppProxyLock); 315 if (mAppProxy != 0) { 316 mAppProxy->pullFromBuffQueue(); 317 } 318} 319 320} // namespace android 321