android_GenericMediaPlayer.cpp revision f6445d330c05ccc57d1adcc6ee05735a33f78881
1/* 2 * Copyright (C) 2011 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_GenericMediaPlayer.h" 21 22#include <media/IMediaPlayerService.h> 23#include <surfaceflinger/ISurfaceComposer.h> 24#include <surfaceflinger/SurfaceComposerClient.h> 25#include <media/stagefright/foundation/ADebug.h> 26 27namespace android { 28 29// default delay in Us used when reposting an event when the player is not ready to accept 30// the command yet. This is for instance used when seeking on a MediaPlayer that's still preparing 31#define DEFAULT_COMMAND_DELAY_FOR_REPOST_US (100*1000) // 100ms 32 33static const char* const kDistantProtocolPrefix[] = { "http:", "https:", "ftp:", "rtp:", "rtsp:"}; 34#define NB_DISTANT_PROTOCOLS (sizeof(kDistantProtocolPrefix)/sizeof(kDistantProtocolPrefix[0])) 35 36//-------------------------------------------------------------------------------------------------- 37MediaPlayerNotificationClient::MediaPlayerNotificationClient(GenericMediaPlayer* gmp) : 38 mGenericMediaPlayer(gmp), 39 mPlayerPrepared(PREPARE_NOT_STARTED) 40{ 41 SL_LOGV("MediaPlayerNotificationClient::MediaPlayerNotificationClient()"); 42} 43 44MediaPlayerNotificationClient::~MediaPlayerNotificationClient() { 45 SL_LOGV("MediaPlayerNotificationClient::~MediaPlayerNotificationClient()"); 46} 47 48// Map a MEDIA_* enum to a string 49static const char *media_to_string(int msg) 50{ 51 switch (msg) { 52#define _(x) case MEDIA_##x: return "MEDIA_" #x; 53 _(PREPARED) 54 _(SET_VIDEO_SIZE) 55 _(SEEK_COMPLETE) 56 _(PLAYBACK_COMPLETE) 57 _(BUFFERING_UPDATE) 58 _(ERROR) 59 _(NOP) 60 _(TIMED_TEXT) 61 _(INFO) 62#undef _ 63 default: 64 return NULL; 65 } 66} 67 68//-------------------------------------------------- 69// IMediaPlayerClient implementation 70void MediaPlayerNotificationClient::notify(int msg, int ext1, int ext2, const Parcel *obj) { 71 SL_LOGV("MediaPlayerNotificationClient::notify(msg=%s (%d), ext1=%d, ext2=%d)", 72 media_to_string(msg), msg, ext1, ext2); 73 74 switch (msg) { 75 case MEDIA_PREPARED: 76 mPlayerPrepared = PREPARE_COMPLETED_SUCCESSFULLY; 77 mPlayerPreparedCondition.signal(); 78 break; 79 80 case MEDIA_SET_VIDEO_SIZE: 81 // only send video size updates if the player was flagged as having video, to avoid 82 // sending video size updates of (0,0) 83 if (mGenericMediaPlayer->mHasVideo) { 84 mGenericMediaPlayer->notify(PLAYEREVENT_VIDEO_SIZE_UPDATE, 85 (int32_t)ext1, (int32_t)ext2, true /*async*/); 86 } 87 break; 88 89 case MEDIA_SEEK_COMPLETE: 90 mGenericMediaPlayer->seekComplete(); 91 break; 92 93 case MEDIA_PLAYBACK_COMPLETE: 94 mGenericMediaPlayer->notify(PLAYEREVENT_ENDOFSTREAM, 1, true /*async*/); 95 break; 96 97 case MEDIA_BUFFERING_UPDATE: 98 // values received from Android framework for buffer fill level use percent, 99 // while SL/XA use permille, so does GenericPlayer 100 mGenericMediaPlayer->bufferingUpdate(ext1 * 10 /*fillLevelPerMille*/); 101 break; 102 103 case MEDIA_ERROR: 104 mPlayerPrepared = PREPARE_COMPLETED_UNSUCCESSFULLY; 105 mPlayerPreparedCondition.signal(); 106 break; 107 108 case MEDIA_NOP: 109 case MEDIA_TIMED_TEXT: 110 case MEDIA_INFO: 111 break; 112 113 default: { } 114 } 115 116} 117 118//-------------------------------------------------- 119void MediaPlayerNotificationClient::beforePrepare() 120{ 121 Mutex::Autolock _l(mLock); 122 assert(mPlayerPrepared == PREPARE_NOT_STARTED); 123 mPlayerPrepared = PREPARE_IN_PROGRESS; 124} 125 126//-------------------------------------------------- 127bool MediaPlayerNotificationClient::blockUntilPlayerPrepared() { 128 Mutex::Autolock _l(mLock); 129 assert(mPlayerPrepared != PREPARE_NOT_STARTED); 130 while (mPlayerPrepared == PREPARE_IN_PROGRESS) { 131 mPlayerPreparedCondition.wait(mLock); 132 } 133 assert(mPlayerPrepared == PREPARE_COMPLETED_SUCCESSFULLY || 134 mPlayerPrepared == PREPARE_COMPLETED_UNSUCCESSFULLY); 135 return mPlayerPrepared == PREPARE_COMPLETED_SUCCESSFULLY; 136} 137 138//-------------------------------------------------------------------------------------------------- 139GenericMediaPlayer::GenericMediaPlayer(const AudioPlayback_Parameters* params, bool hasVideo) : 140 GenericPlayer(params), 141 mHasVideo(hasVideo), 142 mSeekTimeMsec(0), 143 mVideoSurface(0), 144 mVideoSurfaceTexture(0), 145 mPlayer(0), 146 mPlayerClient(0), 147 mGetMediaPlayerInfoGenCount(0) 148{ 149 SL_LOGD("GenericMediaPlayer::GenericMediaPlayer()"); 150 151 mServiceManager = defaultServiceManager(); 152 mBinder = mServiceManager->getService(String16("media.player")); 153 mMediaPlayerService = interface_cast<IMediaPlayerService>(mBinder); 154 155 CHECK(mMediaPlayerService.get() != NULL); 156 157 mPlayerClient = new MediaPlayerNotificationClient(this); 158} 159 160GenericMediaPlayer::~GenericMediaPlayer() { 161 SL_LOGD("GenericMediaPlayer::~GenericMediaPlayer()"); 162} 163 164void GenericMediaPlayer::preDestroy() { 165 SL_LOGD("GenericMediaPlayer::preDestroy()"); 166 // we might be in the middle of blocking for a getXXX call 167 { 168 android::Mutex::Autolock autoLock(mGetMediaPlayerInfoLock); 169 mGetMediaPlayerInfoGenCount++; 170 mGetMediaPlayerInfoCondition.broadcast(); 171 } 172 GenericPlayer::preDestroy(); 173} 174 175//-------------------------------------------------- 176// overridden from GenericPlayer 177// pre-condition: 178// msec != NULL 179// post-condition 180// *msec == mPositionMsec == 181// ANDROID_UNKNOWN_TIME if position is unknown at time of query, 182// or the current MediaPlayer position 183void GenericMediaPlayer::getPositionMsec(int* msec) { 184 SL_LOGD("GenericMediaPlayer::getPositionMsec()"); 185 uint32_t currentGen = 0; 186 { 187 android::Mutex::Autolock autoLock(mGetMediaPlayerInfoLock); 188 currentGen = mGetMediaPlayerInfoGenCount; 189 } 190 // send a message to update the MediaPlayer position in the event loop where it's safe to 191 // access the MediaPlayer. We block until the message kWhatMediaPlayerInfo has been processed 192 (new AMessage(kWhatMediaPlayerInfo, id()))->post(); 193 { 194 android::Mutex::Autolock autoLock(mGetMediaPlayerInfoLock); 195 // mGetMediaPlayerInfoGenCount will be incremented when the kWhatMediaPlayerInfo 196 // gets processed. 197 while (currentGen == mGetMediaPlayerInfoGenCount) { 198 mGetMediaPlayerInfoCondition.wait(mGetMediaPlayerInfoLock); 199 // if multiple GetPosition calls were issued before any got processed on the event queue 200 // then they will all return the same "recent-enough" position 201 } 202 // at this point mPositionMsec has been updated 203 // so now updates msec from mPositionMsec, while holding the lock protecting it 204 GenericPlayer::getPositionMsec(msec); 205 } 206} 207 208//-------------------------------------------------- 209void GenericMediaPlayer::setVideoSurface(const sp<Surface> &surface) { 210 SL_LOGV("GenericMediaPlayer::setVideoSurface()"); 211 mVideoSurface = surface; 212} 213 214void GenericMediaPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) { 215 SL_LOGV("GenericMediaPlayer::setVideoSurfaceTexture()"); 216 mVideoSurfaceTexture = surfaceTexture; 217} 218 219//-------------------------------------------------- 220void GenericMediaPlayer::onMessageReceived(const sp<AMessage> &msg) { 221 SL_LOGV("GenericMediaPlayer::onMessageReceived()"); 222 switch (msg->what()) { 223 case kWhatMediaPlayerInfo: 224 onGetMediaPlayerInfo(); 225 break; 226 227 default: 228 GenericPlayer::onMessageReceived(msg); 229 break; 230 } 231} 232 233//-------------------------------------------------- 234// Event handlers 235 236void GenericMediaPlayer::onPrepare() { 237 SL_LOGD("GenericMediaPlayer::onPrepare()"); 238 // Attempt to prepare at most once, and only if there is a MediaPlayer 239 if (!(mStateFlags & (kFlagPrepared | kFlagPreparedUnsuccessfully)) && (mPlayer != 0)) { 240 if (mHasVideo) { 241 if (mVideoSurface != 0) { 242 mPlayer->setVideoSurface(mVideoSurface); 243 } else if (mVideoSurfaceTexture != 0) { 244 mPlayer->setVideoSurfaceTexture(mVideoSurfaceTexture); 245 } 246 } 247 mPlayer->setAudioStreamType(mPlaybackParams.streamType); 248 mPlayerClient->beforePrepare(); 249 mPlayer->prepareAsync(); 250 if (mPlayerClient->blockUntilPlayerPrepared()) { 251 mStateFlags |= kFlagPrepared; 252 afterMediaPlayerPreparedSuccessfully(); 253 } else { 254 mStateFlags |= kFlagPreparedUnsuccessfully; 255 } 256 GenericPlayer::onPrepare(); 257 } 258 SL_LOGD("GenericMediaPlayer::onPrepare() done, mStateFlags=0x%x", mStateFlags); 259} 260 261 262void GenericMediaPlayer::onPlay() { 263 SL_LOGD("GenericMediaPlayer::onPlay()"); 264 if ((mStateFlags & kFlagPrepared) && (mPlayer != 0)) { 265 SL_LOGD("starting player"); 266 mPlayer->start(); 267 mStateFlags |= kFlagPlaying; 268 } else { 269 SL_LOGV("NOT starting player mStateFlags=0x%x", mStateFlags); 270 } 271} 272 273 274void GenericMediaPlayer::onPause() { 275 SL_LOGD("GenericMediaPlayer::onPause()"); 276 if ((mStateFlags & kFlagPrepared) && (mPlayer != 0)) { 277 mPlayer->pause(); 278 mStateFlags &= ~kFlagPlaying; 279 } 280} 281 282 283void GenericMediaPlayer::onSeekComplete() { 284 SL_LOGV("GenericMediaPlayer::onSeekComplete()"); 285 // did we initiate the seek? 286 if (!(mStateFlags & kFlagSeeking)) { 287 // no, are we looping? 288 if (mStateFlags & kFlagLooping) { 289 // yes, per OpenSL ES 1.0.1 and 1.1 do NOT report it to client 290 // notify(PLAYEREVENT_ENDOFSTREAM, 1, true /*async*/); 291 // no, well that's surprising, but it's probably just a benign race condition 292 } else { 293 SL_LOGW("Unexpected seek complete event ignored"); 294 } 295 } 296 GenericPlayer::onSeekComplete(); 297} 298 299 300/** 301 * pre-condition: WHATPARAM_SEEK_SEEKTIME_MS parameter value >= 0 302 */ 303void GenericMediaPlayer::onSeek(const sp<AMessage> &msg) { 304 SL_LOGV("GenericMediaPlayer::onSeek"); 305 int64_t timeMsec = ANDROID_UNKNOWN_TIME; 306 if (!msg->findInt64(WHATPARAM_SEEK_SEEKTIME_MS, &timeMsec)) { 307 // invalid command, drop it 308 return; 309 } 310 if ((mStateFlags & kFlagSeeking) && (timeMsec == mSeekTimeMsec)) { 311 // already seeking to the same time, cancel this command 312 return; 313 } else if (mStateFlags & kFlagPreparedUnsuccessfully) { 314 // discard seeks after unsuccessful prepare 315 } else if (!(mStateFlags & kFlagPrepared)) { 316 // we are not ready to accept a seek command at this time, retry later 317 msg->post(DEFAULT_COMMAND_DELAY_FOR_REPOST_US); 318 } else { 319 if (msg->findInt64(WHATPARAM_SEEK_SEEKTIME_MS, &timeMsec) && (mPlayer != 0)) { 320 mStateFlags |= kFlagSeeking; 321 mSeekTimeMsec = (int32_t)timeMsec; 322 if (OK != mPlayer->seekTo(timeMsec)) { 323 mStateFlags &= ~kFlagSeeking; 324 mSeekTimeMsec = ANDROID_UNKNOWN_TIME; 325 } else { 326 mPositionMsec = mSeekTimeMsec; 327 } 328 } 329 } 330} 331 332 333void GenericMediaPlayer::onLoop(const sp<AMessage> &msg) { 334 SL_LOGV("GenericMediaPlayer::onLoop"); 335 int32_t loop = 0; 336 if (msg->findInt32(WHATPARAM_LOOP_LOOPING, &loop)) { 337 if (loop) { 338 mStateFlags |= kFlagLooping; 339 } else { 340 mStateFlags &= ~kFlagLooping; 341 } 342 // if we have a MediaPlayer then tell it now, otherwise we'll tell it after it's created 343 if (mPlayer != 0) { 344 (void) mPlayer->setLooping(loop); 345 } 346 } 347} 348 349 350void GenericMediaPlayer::onVolumeUpdate() { 351 SL_LOGD("GenericMediaPlayer::onVolumeUpdate()"); 352 // use settings lock to read the volume settings 353 Mutex::Autolock _l(mSettingsLock); 354 if (mPlayer != 0) { 355 mPlayer->setVolume(mAndroidAudioLevels.mFinalVolume[0], 356 mAndroidAudioLevels.mFinalVolume[1]); 357 } 358} 359 360 361void GenericMediaPlayer::onAttachAuxEffect(const sp<AMessage> &msg) { 362 SL_LOGD("GenericMediaPlayer::onAttachAuxEffect()"); 363 int32_t effectId = 0; 364 if (msg->findInt32(WHATPARAM_ATTACHAUXEFFECT, &effectId)) { 365 if (mPlayer != 0) { 366 status_t status; 367 status = mPlayer->attachAuxEffect(effectId); 368 // attachAuxEffect returns a status but we have no way to report it back to app 369 (void) status; 370 } 371 } 372} 373 374 375void GenericMediaPlayer::onSetAuxEffectSendLevel(const sp<AMessage> &msg) { 376 SL_LOGD("GenericMediaPlayer::onSetAuxEffectSendLevel()"); 377 float level = 0.0f; 378 if (msg->findFloat(WHATPARAM_SETAUXEFFECTSENDLEVEL, &level)) { 379 if (mPlayer != 0) { 380 status_t status; 381 status = mPlayer->setAuxEffectSendLevel(level); 382 // setAuxEffectSendLevel returns a status but we have no way to report it back to app 383 (void) status; 384 } 385 } 386} 387 388 389void GenericMediaPlayer::onBufferingUpdate(const sp<AMessage> &msg) { 390 int32_t fillLevel = 0; 391 if (msg->findInt32(WHATPARAM_BUFFERING_UPDATE, &fillLevel)) { 392 SL_LOGD("GenericMediaPlayer::onBufferingUpdate(fillLevel=%d)", fillLevel); 393 394 Mutex::Autolock _l(mSettingsLock); 395 mCacheFill = fillLevel; 396 // handle cache fill update 397 if (mCacheFill - mLastNotifiedCacheFill >= mCacheFillNotifThreshold) { 398 notifyCacheFill(); 399 } 400 // handle prefetch status update 401 // compute how much time ahead of position is buffered 402 int durationMsec, positionMsec = -1; 403 if ((mStateFlags & kFlagPrepared) && (mPlayer != 0) 404 && (OK == mPlayer->getDuration(&durationMsec)) 405 && (OK == mPlayer->getCurrentPosition(&positionMsec))) { 406 if ((-1 != durationMsec) && (-1 != positionMsec)) { 407 // evaluate prefetch status based on buffer time thresholds 408 int64_t bufferedDurationMsec = (durationMsec * fillLevel / 100) - positionMsec; 409 CacheStatus_t newCacheStatus = mCacheStatus; 410 if (bufferedDurationMsec > DURATION_CACHED_HIGH_MS) { 411 newCacheStatus = kStatusHigh; 412 } else if (bufferedDurationMsec > DURATION_CACHED_MED_MS) { 413 newCacheStatus = kStatusEnough; 414 } else if (bufferedDurationMsec > DURATION_CACHED_LOW_MS) { 415 newCacheStatus = kStatusIntermediate; 416 } else if (bufferedDurationMsec == 0) { 417 newCacheStatus = kStatusEmpty; 418 } else { 419 newCacheStatus = kStatusLow; 420 } 421 422 if (newCacheStatus != mCacheStatus) { 423 mCacheStatus = newCacheStatus; 424 notifyStatus(); 425 } 426 } 427 } 428 } else { 429 SL_LOGV("GenericMediaPlayer::onBufferingUpdate(fillLevel=unknown)"); 430 } 431} 432 433 434void GenericMediaPlayer::onGetMediaPlayerInfo() { 435 SL_LOGD("GenericMediaPlayer::onGetMediaPlayerInfo()"); 436 { 437 android::Mutex::Autolock autoLock(mGetMediaPlayerInfoLock); 438 439 if ((!(mStateFlags & kFlagPrepared)) || (mPlayer == 0)) { 440 mPositionMsec = ANDROID_UNKNOWN_TIME; 441 } else { 442 mPlayer->getCurrentPosition(&mPositionMsec); 443 } 444 445 // the MediaPlayer info has been refreshed 446 mGetMediaPlayerInfoGenCount++; 447 // there might be multiple requests for MediaPlayer info, so use broadcast instead of signal 448 mGetMediaPlayerInfoCondition.broadcast(); 449 } 450} 451 452 453//-------------------------------------------------- 454/** 455 * called from GenericMediaPlayer::onPrepare after the MediaPlayer mPlayer is prepared successfully 456 * pre-conditions: 457 * mPlayer != 0 458 * mPlayer is prepared successfully 459 */ 460void GenericMediaPlayer::afterMediaPlayerPreparedSuccessfully() { 461 SL_LOGV("GenericMediaPlayer::afterMediaPlayerPrepared()"); 462 assert(mPlayer != 0); 463 assert(mStateFlags & kFlagPrepared); 464 // retrieve channel count 465 assert(UNKNOWN_NUMCHANNELS == mChannelCount); 466 Parcel *reply = new Parcel(); 467 status_t status = mPlayer->getParameter(KEY_PARAMETER_AUDIO_CHANNEL_COUNT, reply); 468 if (status == NO_ERROR) { 469 mChannelCount = reply->readInt32(); 470 } else { 471 // FIXME MPEG-2 TS doesn't yet implement this key, so default to stereo 472 mChannelCount = 2; 473 } 474 if (UNKNOWN_NUMCHANNELS != mChannelCount) { 475 // now that we know the channel count, re-calculate the volumes 476 notify(PLAYEREVENT_CHANNEL_COUNT, mChannelCount, true /*async*/); 477 } else { 478 LOGW("channel count is still unknown after prepare"); 479 } 480 delete reply; 481 // retrieve duration 482 { 483 Mutex::Autolock _l(mSettingsLock); 484 int msec = 0; 485 if (OK == mPlayer->getDuration(&msec)) { 486 mDurationMsec = msec; 487 } 488 } 489 // now that we have a MediaPlayer, set the looping flag 490 if (mStateFlags & kFlagLooping) { 491 (void) mPlayer->setLooping(1); 492 } 493 // when the MediaPlayer mPlayer is prepared, there is "sufficient data" in the playback buffers 494 // if the data source was local, and the buffers are considered full so we need to notify that 495 bool isLocalSource = true; 496 if (kDataLocatorUri == mDataLocatorType) { 497 for (unsigned int i = 0 ; i < NB_DISTANT_PROTOCOLS ; i++) { 498 if (!strncasecmp(mDataLocator.uriRef, 499 kDistantProtocolPrefix[i], strlen(kDistantProtocolPrefix[i]))) { 500 isLocalSource = false; 501 break; 502 } 503 } 504 } 505 if (isLocalSource) { 506 SL_LOGD("media player prepared on local source"); 507 { 508 Mutex::Autolock _l(mSettingsLock); 509 mCacheStatus = kStatusHigh; 510 mCacheFill = 1000; 511 notifyStatus(); 512 notifyCacheFill(); 513 } 514 } else { 515 SL_LOGD("media player prepared on non-local source"); 516 } 517} 518 519} // namespace android 520