AudioPlayer_to_android.cpp revision e05f49175a60182d29d0e38ee2a214854c279d95 
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#include "sles_allinclusive.h"
18#include "android_prompts.h"
19#include "android/android_AudioToCbRenderer.h"
20#include "android/android_StreamPlayer.h"
21#include "android/android_LocAVPlayer.h"
22#include "android/include/AacBqToPcmCbRenderer.h"
23
24#include <fcntl.h>
25#include <sys/stat.h>
26
27#include <system/audio.h>
28
29template class android::KeyedVector<SLuint32, android::AudioEffect* > ;
30
31#define KEY_STREAM_TYPE_PARAMSIZE  sizeof(SLint32)
32
33#define AUDIOTRACK_MIN_PLAYBACKRATE_PERMILLE  500
34#define AUDIOTRACK_MAX_PLAYBACKRATE_PERMILLE 2000
35
36#define MEDIAPLAYER_MIN_PLAYBACKRATE_PERMILLE AUDIOTRACK_MIN_PLAYBACKRATE_PERMILLE
37#define MEDIAPLAYER_MAX_PLAYBACKRATE_PERMILLE AUDIOTRACK_MAX_PLAYBACKRATE_PERMILLE
38
39//-----------------------------------------------------------------------------
40// FIXME this method will be absorbed into android_audioPlayer_setPlayState() once
41//       bufferqueue and uri/fd playback are moved under the GenericPlayer C++ object
42SLresult aplayer_setPlayState(const android::sp<android::GenericPlayer> &ap, SLuint32 playState,
43        AndroidObjectState* pObjState) {
44    SLresult result = SL_RESULT_SUCCESS;
45    AndroidObjectState objState = *pObjState;
46
47    switch (playState) {
48     case SL_PLAYSTATE_STOPPED:
49         SL_LOGV("setting GenericPlayer to SL_PLAYSTATE_STOPPED");
50         ap->stop();
51         break;
52     case SL_PLAYSTATE_PAUSED:
53         SL_LOGV("setting GenericPlayer to SL_PLAYSTATE_PAUSED");
54         switch(objState) {
55         case ANDROID_UNINITIALIZED:
56             *pObjState = ANDROID_PREPARING;
57             ap->prepare();
58             break;
59         case ANDROID_PREPARING:
60             break;
61         case ANDROID_READY:
62             ap->pause();
63             break;
64         default:
65             SL_LOGE(ERROR_PLAYERSETPLAYSTATE_INVALID_OBJECT_STATE_D, playState);
66             result = SL_RESULT_INTERNAL_ERROR;
67             break;
68         }
69         break;
70     case SL_PLAYSTATE_PLAYING: {
71         SL_LOGV("setting GenericPlayer to SL_PLAYSTATE_PLAYING");
72         switch(objState) {
73         case ANDROID_UNINITIALIZED:
74             *pObjState = ANDROID_PREPARING;
75             ap->prepare();
76             // intended fall through
77         case ANDROID_PREPARING:
78             // intended fall through
79         case ANDROID_READY:
80             ap->play();
81             break;
82         default:
83             SL_LOGE(ERROR_PLAYERSETPLAYSTATE_INVALID_OBJECT_STATE_D, playState);
84             result = SL_RESULT_INTERNAL_ERROR;
85             break;
86         }
87         }
88         break;
89     default:
90         // checked by caller, should not happen
91         SL_LOGE(ERROR_SHOULDNT_BE_HERE_S, "aplayer_setPlayState");
92         result = SL_RESULT_INTERNAL_ERROR;
93         break;
94     }
95
96    return result;
97}
98
99
100//-----------------------------------------------------------------------------
101// Callback associated with a AudioToCbRenderer of an SL ES AudioPlayer that gets its data
102// from a URI or FD, to write the decoded audio data to a buffer queue
103static size_t adecoder_writeToBufferQueue(const uint8_t *data, size_t size, CAudioPlayer* ap) {
104    if (!android::CallbackProtector::enterCbIfOk(ap->mCallbackProtector)) {
105        // it is not safe to enter the callback (the player is about to go away)
106        return 0;
107    }
108    size_t sizeConsumed = 0;
109    SL_LOGD("received %d bytes from decoder", size);
110    slBufferQueueCallback callback = NULL;
111    void * callbackPContext = NULL;
112
113    // push decoded data to the buffer queue
114    object_lock_exclusive(&ap->mObject);
115
116    if (ap->mBufferQueue.mState.count != 0) {
117        assert(ap->mBufferQueue.mFront != ap->mBufferQueue.mRear);
118
119        BufferHeader *oldFront = ap->mBufferQueue.mFront;
120        BufferHeader *newFront = &oldFront[1];
121
122        uint8_t *pDest = (uint8_t *)oldFront->mBuffer + ap->mBufferQueue.mSizeConsumed;
123        if (ap->mBufferQueue.mSizeConsumed + size < oldFront->mSize) {
124            // room to consume the whole or rest of the decoded data in one shot
125            ap->mBufferQueue.mSizeConsumed += size;
126            // consume data but no callback to the BufferQueue interface here
127            memcpy(pDest, data, size);
128            sizeConsumed = size;
129        } else {
130            // push as much as possible of the decoded data into the buffer queue
131            sizeConsumed = oldFront->mSize - ap->mBufferQueue.mSizeConsumed;
132
133            // the buffer at the head of the buffer queue is full, update the state
134            ap->mBufferQueue.mSizeConsumed = 0;
135            if (newFront == &ap->mBufferQueue.mArray[ap->mBufferQueue.mNumBuffers + 1]) {
136                newFront = ap->mBufferQueue.mArray;
137            }
138            ap->mBufferQueue.mFront = newFront;
139
140            ap->mBufferQueue.mState.count--;
141            ap->mBufferQueue.mState.playIndex++;
142            // consume data
143            memcpy(pDest, data, sizeConsumed);
144            // data has been copied to the buffer, and the buffer queue state has been updated
145            // we will notify the client if applicable
146            callback = ap->mBufferQueue.mCallback;
147            // save callback data
148            callbackPContext = ap->mBufferQueue.mContext;
149        }
150
151    } else {
152        // no available buffers in the queue to write the decoded data
153        sizeConsumed = 0;
154    }
155
156    object_unlock_exclusive(&ap->mObject);
157    // notify client
158    if (NULL != callback) {
159        (*callback)(&ap->mBufferQueue.mItf, callbackPContext);
160    }
161
162    ap->mCallbackProtector->exitCb();
163    return sizeConsumed;
164}
165
166
167//-----------------------------------------------------------------------------
168#define LEFT_CHANNEL_MASK  0x1 << 0
169#define RIGHT_CHANNEL_MASK 0x1 << 1
170
171void android_audioPlayer_volumeUpdate(CAudioPlayer* ap)
172{
173    assert(ap != NULL);
174
175    // the source's channel count, where zero means unknown
176    SLuint8 channelCount = ap->mNumChannels;
177
178    // whether each channel is audible
179    bool leftAudibilityFactor, rightAudibilityFactor;
180
181    // mute has priority over solo
182    if (channelCount >= STEREO_CHANNELS) {
183        if (ap->mMuteMask & LEFT_CHANNEL_MASK) {
184            // left muted
185            leftAudibilityFactor = false;
186        } else {
187            // left not muted
188            if (ap->mSoloMask & LEFT_CHANNEL_MASK) {
189                // left soloed
190                leftAudibilityFactor = true;
191            } else {
192                // left not soloed
193                if (ap->mSoloMask & RIGHT_CHANNEL_MASK) {
194                    // right solo silences left
195                    leftAudibilityFactor = false;
196                } else {
197                    // left and right are not soloed, and left is not muted
198                    leftAudibilityFactor = true;
199                }
200            }
201        }
202
203        if (ap->mMuteMask & RIGHT_CHANNEL_MASK) {
204            // right muted
205            rightAudibilityFactor = false;
206        } else {
207            // right not muted
208            if (ap->mSoloMask & RIGHT_CHANNEL_MASK) {
209                // right soloed
210                rightAudibilityFactor = true;
211            } else {
212                // right not soloed
213                if (ap->mSoloMask & LEFT_CHANNEL_MASK) {
214                    // left solo silences right
215                    rightAudibilityFactor = false;
216                } else {
217                    // left and right are not soloed, and right is not muted
218                    rightAudibilityFactor = true;
219                }
220            }
221        }
222
223    // channel mute and solo are ignored for mono and unknown channel count sources
224    } else {
225        leftAudibilityFactor = true;
226        rightAudibilityFactor = true;
227    }
228
229    // compute volumes without setting
230    const bool audibilityFactors[2] = {leftAudibilityFactor, rightAudibilityFactor};
231    float volumes[2];
232    android_player_volumeUpdate(volumes, &ap->mVolume, channelCount, ap->mAmplFromDirectLevel,
233            audibilityFactors);
234    float leftVol = volumes[0], rightVol = volumes[1];
235
236    // set volume on the underlying media player or audio track
237    if (ap->mAPlayer != 0) {
238        ap->mAPlayer->setVolume(leftVol, rightVol);
239    } else if (ap->mAudioTrack != 0) {
240        ap->mAudioTrack->setVolume(leftVol, rightVol);
241    }
242
243    // changes in the AudioPlayer volume must be reflected in the send level:
244    //  in SLEffectSendItf or in SLAndroidEffectSendItf?
245    // FIXME replace interface test by an internal API once we have one.
246    if (NULL != ap->mEffectSend.mItf) {
247        for (unsigned int i=0 ; i<AUX_MAX ; i++) {
248            if (ap->mEffectSend.mEnableLevels[i].mEnable) {
249                android_fxSend_setSendLevel(ap,
250                        ap->mEffectSend.mEnableLevels[i].mSendLevel + ap->mVolume.mLevel);
251                // there's a single aux bus on Android, so we can stop looking once the first
252                // aux effect is found.
253                break;
254            }
255        }
256    } else if (NULL != ap->mAndroidEffectSend.mItf) {
257        android_fxSend_setSendLevel(ap, ap->mAndroidEffectSend.mSendLevel + ap->mVolume.mLevel);
258    }
259}
260
261// Called by android_audioPlayer_volumeUpdate and android_mediaPlayer_volumeUpdate to compute
262// volumes, but setting volumes is handled by the caller.
263
264void android_player_volumeUpdate(float *pVolumes /*[2]*/, const IVolume *volumeItf, unsigned
265channelCount, float amplFromDirectLevel, const bool *audibilityFactors /*[2]*/)
266{
267    assert(pVolumes != NULL);
268    assert(volumeItf != NULL);
269    // OK for audibilityFactors to be NULL
270
271    bool leftAudibilityFactor, rightAudibilityFactor;
272
273    // apply player mute factor
274    // note that AudioTrack has mute() but not MediaPlayer, so it's easier to use volume
275    // to mute for both rather than calling mute() for AudioTrack
276
277    // player is muted
278    if (volumeItf->mMute) {
279        leftAudibilityFactor = false;
280        rightAudibilityFactor = false;
281    // player isn't muted, and channel mute/solo audibility factors are available (AudioPlayer)
282    } else if (audibilityFactors != NULL) {
283        leftAudibilityFactor = audibilityFactors[0];
284        rightAudibilityFactor = audibilityFactors[1];
285    // player isn't muted, and channel mute/solo audibility factors aren't available (MediaPlayer)
286    } else {
287        leftAudibilityFactor = true;
288        rightAudibilityFactor = true;
289    }
290
291    // compute amplification as the combination of volume level and stereo position
292    //   amplification (or attenuation) from volume level
293    float amplFromVolLevel = sles_to_android_amplification(volumeItf->mLevel);
294    //   amplification from direct level (changed in SLEffectSendtItf and SLAndroidEffectSendItf)
295    float leftVol  = amplFromVolLevel * amplFromDirectLevel;
296    float rightVol = leftVol;
297
298    // amplification from stereo position
299    if (volumeItf->mEnableStereoPosition) {
300        // Left/right amplification (can be attenuations) factors derived for the StereoPosition
301        float amplFromStereoPos[STEREO_CHANNELS];
302        // panning law depends on content channel count: mono to stereo panning vs stereo balance
303        if (1 == channelCount) {
304            // mono to stereo panning
305            double theta = (1000+volumeItf->mStereoPosition)*M_PI_4/1000.0f; // 0 <= theta <= Pi/2
306            amplFromStereoPos[0] = cos(theta);
307            amplFromStereoPos[1] = sin(theta);
308        // channel count is 0 (unknown), 2 (stereo), or > 2 (multi-channel)
309        } else {
310            // stereo balance
311            if (volumeItf->mStereoPosition > 0) {
312                amplFromStereoPos[0] = (1000-volumeItf->mStereoPosition)/1000.0f;
313                amplFromStereoPos[1] = 1.0f;
314            } else {
315                amplFromStereoPos[0] = 1.0f;
316                amplFromStereoPos[1] = (1000+volumeItf->mStereoPosition)/1000.0f;
317            }
318        }
319        leftVol  *= amplFromStereoPos[0];
320        rightVol *= amplFromStereoPos[1];
321    }
322
323    // apply audibility factors
324    if (!leftAudibilityFactor) {
325        leftVol = 0.0;
326    }
327    if (!rightAudibilityFactor) {
328        rightVol = 0.0;
329    }
330
331    // return the computed volumes
332    pVolumes[0] = leftVol;
333    pVolumes[1] = rightVol;
334}
335
336//-----------------------------------------------------------------------------
337void audioTrack_handleMarker_lockPlay(CAudioPlayer* ap) {
338    //SL_LOGV("received event EVENT_MARKER from AudioTrack");
339    slPlayCallback callback = NULL;
340    void* callbackPContext = NULL;
341
342    interface_lock_shared(&ap->mPlay);
343    callback = ap->mPlay.mCallback;
344    callbackPContext = ap->mPlay.mContext;
345    interface_unlock_shared(&ap->mPlay);
346
347    if (NULL != callback) {
348        // getting this event implies SL_PLAYEVENT_HEADATMARKER was set in the event mask
349        (*callback)(&ap->mPlay.mItf, callbackPContext, SL_PLAYEVENT_HEADATMARKER);
350    }
351}
352
353//-----------------------------------------------------------------------------
354void audioTrack_handleNewPos_lockPlay(CAudioPlayer* ap) {
355    //SL_LOGV("received event EVENT_NEW_POS from AudioTrack");
356    slPlayCallback callback = NULL;
357    void* callbackPContext = NULL;
358
359    interface_lock_shared(&ap->mPlay);
360    callback = ap->mPlay.mCallback;
361    callbackPContext = ap->mPlay.mContext;
362    interface_unlock_shared(&ap->mPlay);
363
364    if (NULL != callback) {
365        // getting this event implies SL_PLAYEVENT_HEADATNEWPOS was set in the event mask
366        (*callback)(&ap->mPlay.mItf, callbackPContext, SL_PLAYEVENT_HEADATNEWPOS);
367    }
368}
369
370
371//-----------------------------------------------------------------------------
372void audioTrack_handleUnderrun_lockPlay(CAudioPlayer* ap) {
373    slPlayCallback callback = NULL;
374    void* callbackPContext = NULL;
375
376    interface_lock_shared(&ap->mPlay);
377    callback = ap->mPlay.mCallback;
378    callbackPContext = ap->mPlay.mContext;
379    bool headStalled = (ap->mPlay.mEventFlags & SL_PLAYEVENT_HEADSTALLED) != 0;
380    interface_unlock_shared(&ap->mPlay);
381
382    if ((NULL != callback) && headStalled) {
383        (*callback)(&ap->mPlay.mItf, callbackPContext, SL_PLAYEVENT_HEADSTALLED);
384    }
385}
386
387
388//-----------------------------------------------------------------------------
389/**
390 * post-condition: play state of AudioPlayer is SL_PLAYSTATE_PAUSED if setPlayStateToPaused is true
391 *
392 * note: a conditional flag, setPlayStateToPaused, is used here to specify whether the play state
393 *       needs to be changed when the player reaches the end of the content to play. This is
394 *       relative to what the specification describes for buffer queues vs the
395 *       SL_PLAYEVENT_HEADATEND event. In the OpenSL ES specification 1.0.1:
396 *        - section 8.12 SLBufferQueueItf states "In the case of starvation due to insufficient
397 *          buffers in the queue, the playing of audio data stops. The player remains in the
398 *          SL_PLAYSTATE_PLAYING state."
399 *        - section 9.2.31 SL_PLAYEVENT states "SL_PLAYEVENT_HEADATEND Playback head is at the end
400 *          of the current content and the player has paused."
401 */
402void audioPlayer_dispatch_headAtEnd_lockPlay(CAudioPlayer *ap, bool setPlayStateToPaused,
403        bool needToLock) {
404    //SL_LOGV("ap=%p, setPlayStateToPaused=%d, needToLock=%d", ap, setPlayStateToPaused,
405    //        needToLock);
406    slPlayCallback playCallback = NULL;
407    void * playContext = NULL;
408    // SLPlayItf callback or no callback?
409    if (needToLock) {
410        interface_lock_exclusive(&ap->mPlay);
411    }
412    if (ap->mPlay.mEventFlags & SL_PLAYEVENT_HEADATEND) {
413        playCallback = ap->mPlay.mCallback;
414        playContext = ap->mPlay.mContext;
415    }
416    if (setPlayStateToPaused) {
417        ap->mPlay.mState = SL_PLAYSTATE_PAUSED;
418    }
419    if (needToLock) {
420        interface_unlock_exclusive(&ap->mPlay);
421    }
422    // enqueue callback with no lock held
423    if (NULL != playCallback) {
424#ifndef USE_ASYNCHRONOUS_PLAY_CALLBACK
425        (*playCallback)(&ap->mPlay.mItf, playContext, SL_PLAYEVENT_HEADATEND);
426#else
427        SLresult result = EnqueueAsyncCallback_ppi(ap, playCallback, &ap->mPlay.mItf, playContext,
428                SL_PLAYEVENT_HEADATEND);
429        if (SL_RESULT_SUCCESS != result) {
430            ALOGW("Callback %p(%p, %p, SL_PLAYEVENT_HEADATEND) dropped", playCallback,
431                    &ap->mPlay.mItf, playContext);
432        }
433#endif
434    }
435
436}
437
438
439//-----------------------------------------------------------------------------
440SLresult audioPlayer_setStreamType(CAudioPlayer* ap, SLint32 type) {
441    SLresult result = SL_RESULT_SUCCESS;
442    SL_LOGV("type %d", type);
443
444    audio_stream_type_t newStreamType = ANDROID_DEFAULT_OUTPUT_STREAM_TYPE;
445    switch(type) {
446    case SL_ANDROID_STREAM_VOICE:
447        newStreamType = AUDIO_STREAM_VOICE_CALL;
448        break;
449    case SL_ANDROID_STREAM_SYSTEM:
450        newStreamType = AUDIO_STREAM_SYSTEM;
451        break;
452    case SL_ANDROID_STREAM_RING:
453        newStreamType = AUDIO_STREAM_RING;
454        break;
455    case SL_ANDROID_STREAM_MEDIA:
456        newStreamType = AUDIO_STREAM_MUSIC;
457        break;
458    case SL_ANDROID_STREAM_ALARM:
459        newStreamType = AUDIO_STREAM_ALARM;
460        break;
461    case SL_ANDROID_STREAM_NOTIFICATION:
462        newStreamType = AUDIO_STREAM_NOTIFICATION;
463        break;
464    default:
465        SL_LOGE(ERROR_PLAYERSTREAMTYPE_SET_UNKNOWN_TYPE);
466        result = SL_RESULT_PARAMETER_INVALID;
467        break;
468    }
469
470    // stream type needs to be set before the object is realized
471    // (ap->mAudioTrack is supposed to be NULL until then)
472    if (SL_OBJECT_STATE_UNREALIZED != ap->mObject.mState) {
473        SL_LOGE(ERROR_PLAYERSTREAMTYPE_REALIZED);
474        result = SL_RESULT_PRECONDITIONS_VIOLATED;
475    } else {
476        ap->mStreamType = newStreamType;
477    }
478
479    return result;
480}
481
482
483//-----------------------------------------------------------------------------
484SLresult audioPlayer_getStreamType(CAudioPlayer* ap, SLint32 *pType) {
485    SLresult result = SL_RESULT_SUCCESS;
486
487    switch(ap->mStreamType) {
488    case AUDIO_STREAM_VOICE_CALL:
489        *pType = SL_ANDROID_STREAM_VOICE;
490        break;
491    case AUDIO_STREAM_SYSTEM:
492        *pType = SL_ANDROID_STREAM_SYSTEM;
493        break;
494    case AUDIO_STREAM_RING:
495        *pType = SL_ANDROID_STREAM_RING;
496        break;
497    case AUDIO_STREAM_DEFAULT:
498    case AUDIO_STREAM_MUSIC:
499        *pType = SL_ANDROID_STREAM_MEDIA;
500        break;
501    case AUDIO_STREAM_ALARM:
502        *pType = SL_ANDROID_STREAM_ALARM;
503        break;
504    case AUDIO_STREAM_NOTIFICATION:
505        *pType = SL_ANDROID_STREAM_NOTIFICATION;
506        break;
507    default:
508        result = SL_RESULT_INTERNAL_ERROR;
509        *pType = SL_ANDROID_STREAM_MEDIA;
510        break;
511    }
512
513    return result;
514}
515
516
517//-----------------------------------------------------------------------------
518void audioPlayer_auxEffectUpdate(CAudioPlayer* ap) {
519    if ((ap->mAudioTrack != 0) && (ap->mAuxEffect != 0)) {
520        android_fxSend_attach(ap, true, ap->mAuxEffect, ap->mVolume.mLevel + ap->mAuxSendLevel);
521    }
522}
523
524
525//-----------------------------------------------------------------------------
526/*
527 * returns true if the given data sink is supported by AudioPlayer that doesn't
528 *   play to an OutputMix object, false otherwise
529 *
530 * pre-condition: the locator of the audio sink is not SL_DATALOCATOR_OUTPUTMIX
531 */
532bool audioPlayer_isSupportedNonOutputMixSink(const SLDataSink* pAudioSink) {
533    bool result = true;
534    const SLuint32 sinkLocatorType = *(SLuint32 *)pAudioSink->pLocator;
535    const SLuint32 sinkFormatType = *(SLuint32 *)pAudioSink->pFormat;
536
537    switch (sinkLocatorType) {
538
539    case SL_DATALOCATOR_BUFFERQUEUE:
540    case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE:
541        if (SL_DATAFORMAT_PCM != sinkFormatType) {
542            SL_LOGE("Unsupported sink format 0x%x, expected SL_DATAFORMAT_PCM",
543                    (unsigned)sinkFormatType);
544            result = false;
545        }
546        // it's no use checking the PCM format fields because additional characteristics
547        // such as the number of channels, or sample size are unknown to the player at this stage
548        break;
549
550    default:
551        SL_LOGE("Unsupported sink locator type 0x%x", (unsigned)sinkLocatorType);
552        result = false;
553        break;
554    }
555
556    return result;
557}
558
559
560//-----------------------------------------------------------------------------
561/*
562 * returns the Android object type if the locator type combinations for the source and sinks
563 *   are supported by this implementation, INVALID_TYPE otherwise
564 */
565AndroidObjectType audioPlayer_getAndroidObjectTypeForSourceSink(const CAudioPlayer *ap) {
566
567    const SLDataSource *pAudioSrc = &ap->mDataSource.u.mSource;
568    const SLDataSink *pAudioSnk = &ap->mDataSink.u.mSink;
569    const SLuint32 sourceLocatorType = *(SLuint32 *)pAudioSrc->pLocator;
570    const SLuint32 sinkLocatorType = *(SLuint32 *)pAudioSnk->pLocator;
571    AndroidObjectType type = INVALID_TYPE;
572
573    //--------------------------------------
574    // Sink / source matching check:
575    // the following source / sink combinations are supported
576    //     SL_DATALOCATOR_BUFFERQUEUE                / SL_DATALOCATOR_OUTPUTMIX
577    //     SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE   / SL_DATALOCATOR_OUTPUTMIX
578    //     SL_DATALOCATOR_URI                        / SL_DATALOCATOR_OUTPUTMIX
579    //     SL_DATALOCATOR_ANDROIDFD                  / SL_DATALOCATOR_OUTPUTMIX
580    //     SL_DATALOCATOR_ANDROIDBUFFERQUEUE         / SL_DATALOCATOR_OUTPUTMIX
581    //     SL_DATALOCATOR_ANDROIDBUFFERQUEUE         / SL_DATALOCATOR_BUFFERQUEUE
582    //     SL_DATALOCATOR_URI                        / SL_DATALOCATOR_BUFFERQUEUE
583    //     SL_DATALOCATOR_ANDROIDFD                  / SL_DATALOCATOR_BUFFERQUEUE
584    //     SL_DATALOCATOR_URI                        / SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE
585    //     SL_DATALOCATOR_ANDROIDFD                  / SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE
586    switch (sinkLocatorType) {
587
588    case SL_DATALOCATOR_OUTPUTMIX: {
589        switch (sourceLocatorType) {
590
591        //   Buffer Queue to AudioTrack
592        case SL_DATALOCATOR_BUFFERQUEUE:
593        case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE:
594            type = AUDIOPLAYER_FROM_PCM_BUFFERQUEUE;
595            break;
596
597        //   URI or FD to MediaPlayer
598        case SL_DATALOCATOR_URI:
599        case SL_DATALOCATOR_ANDROIDFD:
600            type = AUDIOPLAYER_FROM_URIFD;
601            break;
602
603        //   Android BufferQueue to MediaPlayer (shared memory streaming)
604        case SL_DATALOCATOR_ANDROIDBUFFERQUEUE:
605            type = AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE;
606            break;
607
608        default:
609            SL_LOGE("Source data locator 0x%x not supported with SL_DATALOCATOR_OUTPUTMIX sink",
610                    (unsigned)sourceLocatorType);
611            break;
612        }
613        }
614        break;
615
616    case SL_DATALOCATOR_BUFFERQUEUE:
617    case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE:
618        switch (sourceLocatorType) {
619
620        //   URI or FD decoded to PCM in a buffer queue
621        case SL_DATALOCATOR_URI:
622        case SL_DATALOCATOR_ANDROIDFD:
623            type = AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE;
624            break;
625
626        //   AAC ADTS Android buffer queue decoded to PCM in a buffer queue
627        case SL_DATALOCATOR_ANDROIDBUFFERQUEUE:
628            type = AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE;
629            break;
630
631        default:
632            SL_LOGE("Source data locator 0x%x not supported with SL_DATALOCATOR_BUFFERQUEUE sink",
633                    (unsigned)sourceLocatorType);
634            break;
635        }
636        break;
637
638    default:
639        SL_LOGE("Sink data locator 0x%x not supported", (unsigned)sinkLocatorType);
640        break;
641    }
642
643    return type;
644}
645
646
647//-----------------------------------------------------------------------------
648/*
649 * Callback associated with an SfPlayer of an SL ES AudioPlayer that gets its data
650 * from a URI or FD, for prepare, prefetch, and play events
651 */
652static void sfplayer_handlePrefetchEvent(int event, int data1, int data2, void* user) {
653
654    // FIXME see similar code and comment in player_handleMediaPlayerEventNotifications
655
656    if (NULL == user) {
657        return;
658    }
659
660    CAudioPlayer *ap = (CAudioPlayer *)user;
661    if (!android::CallbackProtector::enterCbIfOk(ap->mCallbackProtector)) {
662        // it is not safe to enter the callback (the track is about to go away)
663        return;
664    }
665    union {
666        char c[sizeof(int)];
667        int i;
668    } u;
669    u.i = event;
670    SL_LOGV("sfplayer_handlePrefetchEvent(event='%c%c%c%c' (%d), data1=%d, data2=%d, user=%p) from "
671            "SfAudioPlayer", u.c[3], u.c[2], u.c[1], u.c[0], event, data1, data2, user);
672    switch(event) {
673
674    case android::GenericPlayer::kEventPrepared: {
675        SL_LOGV("Received GenericPlayer::kEventPrepared for CAudioPlayer %p", ap);
676
677        // assume no callback
678        slPrefetchCallback callback = NULL;
679        void* callbackPContext;
680        SLuint32 events;
681
682        object_lock_exclusive(&ap->mObject);
683
684        // mark object as prepared; same state is used for successful or unsuccessful prepare
685        assert(ap->mAndroidObjState == ANDROID_PREPARING);
686        ap->mAndroidObjState = ANDROID_READY;
687
688        if (PLAYER_SUCCESS == data1) {
689            // Most of successful prepare completion for ap->mAPlayer
690            // is handled by GenericPlayer and its subclasses.
691        } else {
692            // SfPlayer prepare() failed prefetching, there is no event in SLPrefetchStatus to
693            //  indicate a prefetch error, so we signal it by sending simultaneously two events:
694            //  - SL_PREFETCHEVENT_FILLLEVELCHANGE with a level of 0
695            //  - SL_PREFETCHEVENT_STATUSCHANGE with a status of SL_PREFETCHSTATUS_UNDERFLOW
696            SL_LOGE(ERROR_PLAYER_PREFETCH_d, data1);
697            if (IsInterfaceInitialized(&(ap->mObject), MPH_PREFETCHSTATUS)) {
698                ap->mPrefetchStatus.mLevel = 0;
699                ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_UNDERFLOW;
700                if (!(~ap->mPrefetchStatus.mCallbackEventsMask &
701                        (SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE))) {
702                    callback = ap->mPrefetchStatus.mCallback;
703                    callbackPContext = ap->mPrefetchStatus.mContext;
704                    events = SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE;
705                }
706            }
707        }
708
709        object_unlock_exclusive(&ap->mObject);
710
711        // callback with no lock held
712        if (NULL != callback) {
713            (*callback)(&ap->mPrefetchStatus.mItf, callbackPContext, events);
714        }
715
716    }
717    break;
718
719    case android::GenericPlayer::kEventPrefetchFillLevelUpdate : {
720        if (!IsInterfaceInitialized(&(ap->mObject), MPH_PREFETCHSTATUS)) {
721            break;
722        }
723        slPrefetchCallback callback = NULL;
724        void* callbackPContext = NULL;
725
726        // SLPrefetchStatusItf callback or no callback?
727        interface_lock_exclusive(&ap->mPrefetchStatus);
728        if (ap->mPrefetchStatus.mCallbackEventsMask & SL_PREFETCHEVENT_FILLLEVELCHANGE) {
729            callback = ap->mPrefetchStatus.mCallback;
730            callbackPContext = ap->mPrefetchStatus.mContext;
731        }
732        ap->mPrefetchStatus.mLevel = (SLpermille)data1;
733        interface_unlock_exclusive(&ap->mPrefetchStatus);
734
735        // callback with no lock held
736        if (NULL != callback) {
737            (*callback)(&ap->mPrefetchStatus.mItf, callbackPContext,
738                    SL_PREFETCHEVENT_FILLLEVELCHANGE);
739        }
740    }
741    break;
742
743    case android::GenericPlayer::kEventPrefetchStatusChange: {
744        if (!IsInterfaceInitialized(&(ap->mObject), MPH_PREFETCHSTATUS)) {
745            break;
746        }
747        slPrefetchCallback callback = NULL;
748        void* callbackPContext = NULL;
749
750        // SLPrefetchStatusItf callback or no callback?
751        object_lock_exclusive(&ap->mObject);
752        if (ap->mPrefetchStatus.mCallbackEventsMask & SL_PREFETCHEVENT_STATUSCHANGE) {
753            callback = ap->mPrefetchStatus.mCallback;
754            callbackPContext = ap->mPrefetchStatus.mContext;
755        }
756        if (data1 >= android::kStatusIntermediate) {
757            ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_SUFFICIENTDATA;
758        } else if (data1 < android::kStatusIntermediate) {
759            ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_UNDERFLOW;
760        }
761        object_unlock_exclusive(&ap->mObject);
762
763        // callback with no lock held
764        if (NULL != callback) {
765            (*callback)(&ap->mPrefetchStatus.mItf, callbackPContext, SL_PREFETCHEVENT_STATUSCHANGE);
766        }
767        }
768        break;
769
770    case android::GenericPlayer::kEventEndOfStream: {
771        audioPlayer_dispatch_headAtEnd_lockPlay(ap, true /*set state to paused?*/, true);
772        if ((ap->mAudioTrack != 0) && (!ap->mSeek.mLoopEnabled)) {
773            ap->mAudioTrack->stop();
774        }
775        }
776        break;
777
778    case android::GenericPlayer::kEventChannelCount: {
779        object_lock_exclusive(&ap->mObject);
780        if (UNKNOWN_NUMCHANNELS == ap->mNumChannels && UNKNOWN_NUMCHANNELS != data1) {
781            ap->mNumChannels = data1;
782            android_audioPlayer_volumeUpdate(ap);
783        }
784        object_unlock_exclusive(&ap->mObject);
785        }
786        break;
787
788    case android::GenericPlayer::kEventPlay: {
789        slPlayCallback callback = NULL;
790        void* callbackPContext = NULL;
791
792        interface_lock_shared(&ap->mPlay);
793        callback = ap->mPlay.mCallback;
794        callbackPContext = ap->mPlay.mContext;
795        interface_unlock_shared(&ap->mPlay);
796
797        if (NULL != callback) {
798            SLuint32 event = (SLuint32) data1;  // SL_PLAYEVENT_HEAD*
799#ifndef USE_ASYNCHRONOUS_PLAY_CALLBACK
800            // synchronous callback requires a synchronous GetPosition implementation
801            (*callback)(&ap->mPlay.mItf, callbackPContext, event);
802#else
803            // asynchronous callback works with any GetPosition implementation
804            SLresult result = EnqueueAsyncCallback_ppi(ap, callback, &ap->mPlay.mItf,
805                    callbackPContext, event);
806            if (SL_RESULT_SUCCESS != result) {
807                ALOGW("Callback %p(%p, %p, 0x%x) dropped", callback,
808                        &ap->mPlay.mItf, callbackPContext, event);
809            }
810#endif
811        }
812        }
813        break;
814
815      case android::GenericPlayer::kEventErrorAfterPrepare: {
816        SL_LOGV("kEventErrorAfterPrepare");
817
818        // assume no callback
819        slPrefetchCallback callback = NULL;
820        void* callbackPContext = NULL;
821
822        object_lock_exclusive(&ap->mObject);
823        if (IsInterfaceInitialized(&ap->mObject, MPH_PREFETCHSTATUS)) {
824            ap->mPrefetchStatus.mLevel = 0;
825            ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_UNDERFLOW;
826            if (!(~ap->mPrefetchStatus.mCallbackEventsMask &
827                    (SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE))) {
828                callback = ap->mPrefetchStatus.mCallback;
829                callbackPContext = ap->mPrefetchStatus.mContext;
830            }
831        }
832        object_unlock_exclusive(&ap->mObject);
833
834        // FIXME there's interesting information in data1, but no API to convey it to client
835        SL_LOGE("Error after prepare: %d", data1);
836
837        // callback with no lock held
838        if (NULL != callback) {
839            (*callback)(&ap->mPrefetchStatus.mItf, callbackPContext,
840                    SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE);
841        }
842
843      }
844      break;
845
846    case android::GenericPlayer::kEventHasVideoSize:
847        //SL_LOGW("Unexpected kEventHasVideoSize");
848        break;
849
850    default:
851        break;
852    }
853
854    ap->mCallbackProtector->exitCb();
855}
856
857// From EffectDownmix.h
858const uint32_t kSides = AUDIO_CHANNEL_OUT_SIDE_LEFT | AUDIO_CHANNEL_OUT_SIDE_RIGHT;
859const uint32_t kBacks = AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT;
860const uint32_t kUnsupported =
861        AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER | AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER |
862        AUDIO_CHANNEL_OUT_TOP_CENTER |
863        AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT |
864        AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER |
865        AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT |
866        AUDIO_CHANNEL_OUT_TOP_BACK_LEFT |
867        AUDIO_CHANNEL_OUT_TOP_BACK_CENTER |
868        AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT;
869
870//TODO(pmclean) This will need to be revisited when arbitrary N-channel support is added.
871SLresult android_audioPlayer_validateChannelMask(uint32_t mask, int numChans) {
872    // Check that the number of channels falls within bounds.
873    if (numChans < 0 || numChans > 8) {
874        return SL_RESULT_CONTENT_UNSUPPORTED;
875    }
876    // Are there the right number of channels in the mask?
877    if (audio_channel_count_from_out_mask(mask) != numChans) {
878        return SL_RESULT_CONTENT_UNSUPPORTED;
879    }
880    // check against unsupported channels
881    if (mask & kUnsupported) {
882        ALOGE("Unsupported channels (top or front left/right of center)");
883        return SL_RESULT_CONTENT_UNSUPPORTED;
884    }
885    // verify has FL/FR if more than one channel
886    if (numChans > 1 && (mask & AUDIO_CHANNEL_OUT_STEREO) != AUDIO_CHANNEL_OUT_STEREO) {
887        ALOGE("Front channels must be present");
888        return SL_RESULT_CONTENT_UNSUPPORTED;
889    }
890    // verify uses SIDE as a pair (ok if not using SIDE at all)
891    bool hasSides = false;
892    if ((mask & kSides) != 0) {
893        if ((mask & kSides) != kSides) {
894            ALOGE("Side channels must be used as a pair");
895            return SL_RESULT_CONTENT_UNSUPPORTED;
896        }
897        hasSides = true;
898    }
899    // verify uses BACK as a pair (ok if not using BACK at all)
900    bool hasBacks = false;
901    if ((mask & kBacks) != 0) {
902        if ((mask & kBacks) != kBacks) {
903            ALOGE("Back channels must be used as a pair");
904            return SL_RESULT_CONTENT_UNSUPPORTED;
905        }
906        hasBacks = true;
907    }
908
909    return SL_RESULT_SUCCESS;
910}
911
912//-----------------------------------------------------------------------------
913SLresult android_audioPlayer_checkSourceSink(CAudioPlayer *pAudioPlayer)
914{
915    // verify that the locator types for the source / sink combination is supported
916    pAudioPlayer->mAndroidObjType = audioPlayer_getAndroidObjectTypeForSourceSink(pAudioPlayer);
917    if (INVALID_TYPE == pAudioPlayer->mAndroidObjType) {
918        return SL_RESULT_PARAMETER_INVALID;
919    }
920
921    const SLDataSource *pAudioSrc = &pAudioPlayer->mDataSource.u.mSource;
922    const SLDataSink *pAudioSnk = &pAudioPlayer->mDataSink.u.mSink;
923
924    // format check:
925    const SLuint32 sourceLocatorType = *(SLuint32 *)pAudioSrc->pLocator;
926    const SLuint32 sinkLocatorType = *(SLuint32 *)pAudioSnk->pLocator;
927    const SLuint32 sourceFormatType = *(SLuint32 *)pAudioSrc->pFormat;
928    const SLuint32 sinkFormatType = *(SLuint32 *)pAudioSnk->pFormat;
929
930    const SLuint32 *df_representation = NULL; // pointer to representation field, if it exists
931
932    switch (sourceLocatorType) {
933    //------------------
934    //   Buffer Queues
935    case SL_DATALOCATOR_BUFFERQUEUE:
936    case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE:
937        {
938        SLDataLocator_BufferQueue *dl_bq = (SLDataLocator_BufferQueue *) pAudioSrc->pLocator;
939
940        // Buffer format
941        switch (sourceFormatType) {
942        //     currently only PCM buffer queues are supported,
943        case SL_ANDROID_DATAFORMAT_PCM_EX: {
944            const SLAndroidDataFormat_PCM_EX *df_pcm =
945                    (const SLAndroidDataFormat_PCM_EX *) pAudioSrc->pFormat;
946            switch (df_pcm->representation) {
947            case SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT:
948            case SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT:
949            case SL_ANDROID_PCM_REPRESENTATION_FLOAT:
950                df_representation = &df_pcm->representation;
951                break;
952            default:
953                SL_LOGE("Cannot create audio player: unsupported representation: %d",
954                        df_pcm->representation);
955                return SL_RESULT_CONTENT_UNSUPPORTED;
956            }
957            } // SL_ANDROID_DATAFORMAT_PCM_EX - fall through to next test.
958        case SL_DATAFORMAT_PCM: {
959            const SLDataFormat_PCM *df_pcm = (const SLDataFormat_PCM *) pAudioSrc->pFormat;
960            SLresult result = android_audioPlayer_validateChannelMask(df_pcm->channelMask,
961                                                                      df_pcm->numChannels);
962            if (result != SL_RESULT_SUCCESS) {
963                SL_LOGE("Cannot create audio player: unsupported PCM data source with %u channels",
964                        (unsigned) df_pcm->numChannels);
965                return result;
966            }
967
968            switch (df_pcm->samplesPerSec) {
969            case SL_SAMPLINGRATE_8:
970            case SL_SAMPLINGRATE_11_025:
971            case SL_SAMPLINGRATE_12:
972            case SL_SAMPLINGRATE_16:
973            case SL_SAMPLINGRATE_22_05:
974            case SL_SAMPLINGRATE_24:
975            case SL_SAMPLINGRATE_32:
976            case SL_SAMPLINGRATE_44_1:
977            case SL_SAMPLINGRATE_48:
978                break;
979            case SL_SAMPLINGRATE_64:
980            case SL_SAMPLINGRATE_88_2:
981            case SL_SAMPLINGRATE_96:
982            case SL_SAMPLINGRATE_192:
983            default:
984                SL_LOGE("Cannot create audio player: unsupported sample rate %u milliHz",
985                    (unsigned) df_pcm->samplesPerSec);
986                return SL_RESULT_CONTENT_UNSUPPORTED;
987            }
988            switch (df_pcm->bitsPerSample) {
989            case SL_PCMSAMPLEFORMAT_FIXED_8:
990                if (df_representation != NULL &&
991                        *df_representation != SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT) {
992                    goto default_err;
993                }
994                break;
995            case SL_PCMSAMPLEFORMAT_FIXED_16:
996            case SL_PCMSAMPLEFORMAT_FIXED_24:
997                if (df_representation != NULL &&
998                        *df_representation != SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT) {
999                    goto default_err;
1000                }
1001                break;
1002            case SL_PCMSAMPLEFORMAT_FIXED_32:
1003                if (df_representation != NULL
1004                        && *df_representation != SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT
1005                        && *df_representation != SL_ANDROID_PCM_REPRESENTATION_FLOAT) {
1006                    goto default_err;
1007                }
1008                break;
1009                // others
1010            default:
1011            default_err:
1012                // this should have already been rejected by checkDataFormat
1013                SL_LOGE("Cannot create audio player: unsupported sample bit depth %u",
1014                        (SLuint32)df_pcm->bitsPerSample);
1015                return SL_RESULT_CONTENT_UNSUPPORTED;
1016            }
1017            switch (df_pcm->containerSize) {
1018            case 8:
1019            case 16:
1020            case 24:
1021            case 32:
1022                break;
1023                // others
1024            default:
1025                SL_LOGE("Cannot create audio player: unsupported container size %u",
1026                    (unsigned) df_pcm->containerSize);
1027                return SL_RESULT_CONTENT_UNSUPPORTED;
1028            }
1029            // df_pcm->channelMask: the earlier platform-independent check and the
1030            //     upcoming check by sles_to_android_channelMaskOut are sufficient
1031            switch (df_pcm->endianness) {
1032            case SL_BYTEORDER_LITTLEENDIAN:
1033                break;
1034            case SL_BYTEORDER_BIGENDIAN:
1035                SL_LOGE("Cannot create audio player: unsupported big-endian byte order");
1036                return SL_RESULT_CONTENT_UNSUPPORTED;
1037                // native is proposed but not yet in spec
1038            default:
1039                SL_LOGE("Cannot create audio player: unsupported byte order %u",
1040                    (unsigned) df_pcm->endianness);
1041                return SL_RESULT_CONTENT_UNSUPPORTED;
1042            }
1043            } //case SL_DATAFORMAT_PCM
1044            break;
1045        case SL_DATAFORMAT_MIME:
1046        case XA_DATAFORMAT_RAWIMAGE:
1047            SL_LOGE("Cannot create audio player with buffer queue data source "
1048                "without SL_DATAFORMAT_PCM format");
1049            return SL_RESULT_CONTENT_UNSUPPORTED;
1050        default:
1051            // invalid data format is detected earlier
1052            assert(false);
1053            return SL_RESULT_INTERNAL_ERROR;
1054        } // switch (sourceFormatType)
1055        } // case SL_DATALOCATOR_BUFFERQUEUE or SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE
1056        break;
1057    //------------------
1058    //   URI
1059    case SL_DATALOCATOR_URI:
1060        {
1061        SLDataLocator_URI *dl_uri = (SLDataLocator_URI *) pAudioSrc->pLocator;
1062        if (NULL == dl_uri->URI) {
1063            return SL_RESULT_PARAMETER_INVALID;
1064        }
1065        // URI format
1066        switch (sourceFormatType) {
1067        case SL_DATAFORMAT_MIME:
1068            break;
1069        case SL_DATAFORMAT_PCM:
1070        case XA_DATAFORMAT_RAWIMAGE:
1071            SL_LOGE("Cannot create audio player with SL_DATALOCATOR_URI data source without "
1072                "SL_DATAFORMAT_MIME format");
1073            return SL_RESULT_CONTENT_UNSUPPORTED;
1074        } // switch (sourceFormatType)
1075        // decoding format check
1076        if ((sinkLocatorType != SL_DATALOCATOR_OUTPUTMIX) &&
1077                !audioPlayer_isSupportedNonOutputMixSink(pAudioSnk)) {
1078            return SL_RESULT_CONTENT_UNSUPPORTED;
1079        }
1080        } // case SL_DATALOCATOR_URI
1081        break;
1082    //------------------
1083    //   File Descriptor
1084    case SL_DATALOCATOR_ANDROIDFD:
1085        {
1086        // fd is already non null
1087        switch (sourceFormatType) {
1088        case SL_DATAFORMAT_MIME:
1089            break;
1090        case SL_DATAFORMAT_PCM:
1091            // FIXME implement
1092            SL_LOGD("[ FIXME implement PCM FD data sources ]");
1093            break;
1094        case XA_DATAFORMAT_RAWIMAGE:
1095            SL_LOGE("Cannot create audio player with SL_DATALOCATOR_ANDROIDFD data source "
1096                "without SL_DATAFORMAT_MIME or SL_DATAFORMAT_PCM format");
1097            return SL_RESULT_CONTENT_UNSUPPORTED;
1098        default:
1099            // invalid data format is detected earlier
1100            assert(false);
1101            return SL_RESULT_INTERNAL_ERROR;
1102        } // switch (sourceFormatType)
1103        if ((sinkLocatorType != SL_DATALOCATOR_OUTPUTMIX) &&
1104                !audioPlayer_isSupportedNonOutputMixSink(pAudioSnk)) {
1105            return SL_RESULT_CONTENT_UNSUPPORTED;
1106        }
1107        } // case SL_DATALOCATOR_ANDROIDFD
1108        break;
1109    //------------------
1110    //   Stream
1111    case SL_DATALOCATOR_ANDROIDBUFFERQUEUE:
1112    {
1113        switch (sourceFormatType) {
1114        case SL_DATAFORMAT_MIME:
1115        {
1116            SLDataFormat_MIME *df_mime = (SLDataFormat_MIME *) pAudioSrc->pFormat;
1117            if (NULL == df_mime) {
1118                SL_LOGE("MIME type null invalid");
1119                return SL_RESULT_CONTENT_UNSUPPORTED;
1120            }
1121            SL_LOGD("source MIME is %s", (char*)df_mime->mimeType);
1122            switch(df_mime->containerType) {
1123            case SL_CONTAINERTYPE_MPEG_TS:
1124                if (strcasecmp((char*)df_mime->mimeType, (const char *)XA_ANDROID_MIME_MP2TS)) {
1125                    SL_LOGE("Invalid MIME (%s) for container SL_CONTAINERTYPE_MPEG_TS, expects %s",
1126                            (char*)df_mime->mimeType, XA_ANDROID_MIME_MP2TS);
1127                    return SL_RESULT_CONTENT_UNSUPPORTED;
1128                }
1129                if (pAudioPlayer->mAndroidObjType != AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE) {
1130                    SL_LOGE("Invalid sink for container SL_CONTAINERTYPE_MPEG_TS");
1131                    return SL_RESULT_PARAMETER_INVALID;
1132                }
1133                break;
1134            case SL_CONTAINERTYPE_RAW:
1135            case SL_CONTAINERTYPE_AAC:
1136                if (strcasecmp((char*)df_mime->mimeType, (const char *)SL_ANDROID_MIME_AACADTS) &&
1137                        strcasecmp((char*)df_mime->mimeType,
1138                                ANDROID_MIME_AACADTS_ANDROID_FRAMEWORK)) {
1139                    SL_LOGE("Invalid MIME (%s) for container type %d, expects %s",
1140                            (char*)df_mime->mimeType, df_mime->containerType,
1141                            SL_ANDROID_MIME_AACADTS);
1142                    return SL_RESULT_CONTENT_UNSUPPORTED;
1143                }
1144                if (pAudioPlayer->mAndroidObjType != AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE) {
1145                    SL_LOGE("Invalid sink for container SL_CONTAINERTYPE_AAC");
1146                    return SL_RESULT_PARAMETER_INVALID;
1147                }
1148                break;
1149            default:
1150                SL_LOGE("Cannot create player with SL_DATALOCATOR_ANDROIDBUFFERQUEUE data source "
1151                                        "that is not fed MPEG-2 TS data or AAC ADTS data");
1152                return SL_RESULT_CONTENT_UNSUPPORTED;
1153            }
1154        }
1155        break;
1156        default:
1157            SL_LOGE("Cannot create player with SL_DATALOCATOR_ANDROIDBUFFERQUEUE data source "
1158                    "without SL_DATAFORMAT_MIME format");
1159            return SL_RESULT_CONTENT_UNSUPPORTED;
1160        }
1161    }
1162    break; // case SL_DATALOCATOR_ANDROIDBUFFERQUEUE
1163    //------------------
1164    //   Address
1165    case SL_DATALOCATOR_ADDRESS:
1166    case SL_DATALOCATOR_IODEVICE:
1167    case SL_DATALOCATOR_OUTPUTMIX:
1168    case XA_DATALOCATOR_NATIVEDISPLAY:
1169    case SL_DATALOCATOR_MIDIBUFFERQUEUE:
1170        SL_LOGE("Cannot create audio player with data locator type 0x%x",
1171                (unsigned) sourceLocatorType);
1172        return SL_RESULT_CONTENT_UNSUPPORTED;
1173    default:
1174        SL_LOGE("Cannot create audio player with invalid data locator type 0x%x",
1175                (unsigned) sourceLocatorType);
1176        return SL_RESULT_PARAMETER_INVALID;
1177    }// switch (locatorType)
1178
1179    return SL_RESULT_SUCCESS;
1180}
1181
1182
1183//-----------------------------------------------------------------------------
1184// Callback associated with an AudioTrack of an SL ES AudioPlayer that gets its data
1185// from a buffer queue. This will not be called once the AudioTrack has been destroyed.
1186static void audioTrack_callBack_pullFromBuffQueue(int event, void* user, void *info) {
1187    CAudioPlayer *ap = (CAudioPlayer *)user;
1188
1189    if (!android::CallbackProtector::enterCbIfOk(ap->mCallbackProtector)) {
1190        // it is not safe to enter the callback (the track is about to go away)
1191        return;
1192    }
1193
1194    void * callbackPContext = NULL;
1195    switch(event) {
1196
1197    case android::AudioTrack::EVENT_MORE_DATA: {
1198        //SL_LOGV("received event EVENT_MORE_DATA from AudioTrack TID=%d", gettid());
1199        slPrefetchCallback prefetchCallback = NULL;
1200        void *prefetchContext = NULL;
1201        SLuint32 prefetchEvents = SL_PREFETCHEVENT_NONE;
1202        android::AudioTrack::Buffer* pBuff = (android::AudioTrack::Buffer*)info;
1203
1204        // retrieve data from the buffer queue
1205        interface_lock_exclusive(&ap->mBufferQueue);
1206
1207        if (ap->mBufferQueue.mCallbackPending) {
1208            // call callback with lock not held
1209            slBufferQueueCallback callback = ap->mBufferQueue.mCallback;
1210            if (NULL != callback) {
1211                callbackPContext = ap->mBufferQueue.mContext;
1212                interface_unlock_exclusive(&ap->mBufferQueue);
1213                (*callback)(&ap->mBufferQueue.mItf, callbackPContext);
1214                interface_lock_exclusive(&ap->mBufferQueue);
1215                ap->mBufferQueue.mCallbackPending = false;
1216            }
1217        }
1218
1219        if (ap->mBufferQueue.mState.count != 0) {
1220            //SL_LOGV("nbBuffers in queue = %u",ap->mBufferQueue.mState.count);
1221            assert(ap->mBufferQueue.mFront != ap->mBufferQueue.mRear);
1222
1223            BufferHeader *oldFront = ap->mBufferQueue.mFront;
1224            BufferHeader *newFront = &oldFront[1];
1225
1226            size_t availSource = oldFront->mSize - ap->mBufferQueue.mSizeConsumed;
1227            size_t availSink = pBuff->size;
1228            size_t bytesToCopy = availSource < availSink ? availSource : availSink;
1229            void *pSrc = (char *)oldFront->mBuffer + ap->mBufferQueue.mSizeConsumed;
1230            memcpy(pBuff->raw, pSrc, bytesToCopy);
1231
1232            if (bytesToCopy < availSource) {
1233                ap->mBufferQueue.mSizeConsumed += bytesToCopy;
1234                // pBuff->size is already equal to bytesToCopy in this case
1235            } else {
1236                // consumed an entire buffer, dequeue
1237                pBuff->size = bytesToCopy;
1238                ap->mBufferQueue.mSizeConsumed = 0;
1239                if (newFront ==
1240                        &ap->mBufferQueue.mArray
1241                            [ap->mBufferQueue.mNumBuffers + 1])
1242                {
1243                    newFront = ap->mBufferQueue.mArray;
1244                }
1245                ap->mBufferQueue.mFront = newFront;
1246
1247                ap->mBufferQueue.mState.count--;
1248                ap->mBufferQueue.mState.playIndex++;
1249                ap->mBufferQueue.mCallbackPending = true;
1250            }
1251        } else { // empty queue
1252            // signal no data available
1253            pBuff->size = 0;
1254
1255            // signal we're at the end of the content, but don't pause (see note in function)
1256            audioPlayer_dispatch_headAtEnd_lockPlay(ap, false /*set state to paused?*/, false);
1257
1258            // signal underflow to prefetch status itf
1259            if (IsInterfaceInitialized(&(ap->mObject), MPH_PREFETCHSTATUS)) {
1260                ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_UNDERFLOW;
1261                ap->mPrefetchStatus.mLevel = 0;
1262                // callback or no callback?
1263                prefetchEvents = ap->mPrefetchStatus.mCallbackEventsMask &
1264                        (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE);
1265                if (SL_PREFETCHEVENT_NONE != prefetchEvents) {
1266                    prefetchCallback = ap->mPrefetchStatus.mCallback;
1267                    prefetchContext  = ap->mPrefetchStatus.mContext;
1268                }
1269            }
1270
1271            // stop the track so it restarts playing faster when new data is enqueued
1272            ap->mAudioTrack->stop();
1273        }
1274        interface_unlock_exclusive(&ap->mBufferQueue);
1275
1276        // notify client
1277        if (NULL != prefetchCallback) {
1278            assert(SL_PREFETCHEVENT_NONE != prefetchEvents);
1279            // spec requires separate callbacks for each event
1280            if (prefetchEvents & SL_PREFETCHEVENT_STATUSCHANGE) {
1281                (*prefetchCallback)(&ap->mPrefetchStatus.mItf, prefetchContext,
1282                        SL_PREFETCHEVENT_STATUSCHANGE);
1283            }
1284            if (prefetchEvents & SL_PREFETCHEVENT_FILLLEVELCHANGE) {
1285                (*prefetchCallback)(&ap->mPrefetchStatus.mItf, prefetchContext,
1286                        SL_PREFETCHEVENT_FILLLEVELCHANGE);
1287            }
1288        }
1289    }
1290    break;
1291
1292    case android::AudioTrack::EVENT_MARKER:
1293        //SL_LOGI("received event EVENT_MARKER from AudioTrack");
1294        audioTrack_handleMarker_lockPlay(ap);
1295        break;
1296
1297    case android::AudioTrack::EVENT_NEW_POS:
1298        //SL_LOGI("received event EVENT_NEW_POS from AudioTrack");
1299        audioTrack_handleNewPos_lockPlay(ap);
1300        break;
1301
1302    case android::AudioTrack::EVENT_UNDERRUN:
1303        //SL_LOGI("received event EVENT_UNDERRUN from AudioTrack");
1304        audioTrack_handleUnderrun_lockPlay(ap);
1305        break;
1306
1307    case android::AudioTrack::EVENT_BUFFER_END:
1308    case android::AudioTrack::EVENT_LOOP_END:
1309        // These are unexpected so fall through
1310    default:
1311        // FIXME where does the notification of SL_PLAYEVENT_HEADMOVING fit?
1312        SL_LOGE("Encountered unknown AudioTrack event %d for CAudioPlayer %p", event,
1313                (CAudioPlayer *)user);
1314        break;
1315    }
1316
1317    ap->mCallbackProtector->exitCb();
1318}
1319
1320
1321//-----------------------------------------------------------------------------
1322void android_audioPlayer_create(CAudioPlayer *pAudioPlayer) {
1323
1324    // pAudioPlayer->mAndroidObjType has been set in android_audioPlayer_checkSourceSink()
1325    // and if it was == INVALID_TYPE, then IEngine_CreateAudioPlayer would never call us
1326    assert(INVALID_TYPE != pAudioPlayer->mAndroidObjType);
1327
1328    // These initializations are in the same order as the field declarations in classes.h
1329
1330    // FIXME Consolidate initializations (many of these already in IEngine_CreateAudioPlayer)
1331    // mAndroidObjType: see above comment
1332    pAudioPlayer->mAndroidObjState = ANDROID_UNINITIALIZED;
1333    pAudioPlayer->mSessionId = android::AudioSystem::newAudioUniqueId();
1334
1335    // placeholder: not necessary yet as session ID lifetime doesn't extend beyond player
1336    // android::AudioSystem::acquireAudioSessionId(pAudioPlayer->mSessionId);
1337
1338    pAudioPlayer->mStreamType = ANDROID_DEFAULT_OUTPUT_STREAM_TYPE;
1339
1340    // mAudioTrack
1341    pAudioPlayer->mCallbackProtector = new android::CallbackProtector();
1342    // mAPLayer
1343    // mAuxEffect
1344
1345    pAudioPlayer->mAuxSendLevel = 0;
1346    pAudioPlayer->mAmplFromDirectLevel = 1.0f; // matches initial mDirectLevel value
1347    pAudioPlayer->mDeferredStart = false;
1348
1349    // This section re-initializes interface-specific fields that
1350    // can be set or used regardless of whether the interface is
1351    // exposed on the AudioPlayer or not
1352
1353    switch (pAudioPlayer->mAndroidObjType) {
1354    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
1355        pAudioPlayer->mPlaybackRate.mMinRate = AUDIOTRACK_MIN_PLAYBACKRATE_PERMILLE;
1356        pAudioPlayer->mPlaybackRate.mMaxRate = AUDIOTRACK_MAX_PLAYBACKRATE_PERMILLE;
1357        break;
1358    case AUDIOPLAYER_FROM_URIFD:
1359        pAudioPlayer->mPlaybackRate.mMinRate = MEDIAPLAYER_MIN_PLAYBACKRATE_PERMILLE;
1360        pAudioPlayer->mPlaybackRate.mMaxRate = MEDIAPLAYER_MAX_PLAYBACKRATE_PERMILLE;
1361        break;
1362    default:
1363        // use the default range
1364        break;
1365    }
1366
1367}
1368
1369
1370//-----------------------------------------------------------------------------
1371SLresult android_audioPlayer_setConfig(CAudioPlayer *ap, const SLchar *configKey,
1372        const void *pConfigValue, SLuint32 valueSize) {
1373
1374    SLresult result;
1375
1376    assert(NULL != ap && NULL != configKey && NULL != pConfigValue);
1377    if (strcmp((const char*)configKey, (const char*)SL_ANDROID_KEY_STREAM_TYPE) == 0) {
1378
1379        // stream type
1380        if (KEY_STREAM_TYPE_PARAMSIZE > valueSize) {
1381            SL_LOGE(ERROR_CONFIG_VALUESIZE_TOO_LOW);
1382            result = SL_RESULT_BUFFER_INSUFFICIENT;
1383        } else {
1384            result = audioPlayer_setStreamType(ap, *(SLuint32*)pConfigValue);
1385        }
1386
1387    } else {
1388        SL_LOGE(ERROR_CONFIG_UNKNOWN_KEY);
1389        result = SL_RESULT_PARAMETER_INVALID;
1390    }
1391
1392    return result;
1393}
1394
1395
1396//-----------------------------------------------------------------------------
1397SLresult android_audioPlayer_getConfig(CAudioPlayer* ap, const SLchar *configKey,
1398        SLuint32* pValueSize, void *pConfigValue) {
1399
1400    SLresult result;
1401
1402    assert(NULL != ap && NULL != configKey && NULL != pValueSize);
1403    if (strcmp((const char*)configKey, (const char*)SL_ANDROID_KEY_STREAM_TYPE) == 0) {
1404
1405        // stream type
1406        if (NULL == pConfigValue) {
1407            result = SL_RESULT_SUCCESS;
1408        } else if (KEY_STREAM_TYPE_PARAMSIZE > *pValueSize) {
1409            SL_LOGE(ERROR_CONFIG_VALUESIZE_TOO_LOW);
1410            result = SL_RESULT_BUFFER_INSUFFICIENT;
1411        } else {
1412            result = audioPlayer_getStreamType(ap, (SLint32*)pConfigValue);
1413        }
1414        *pValueSize = KEY_STREAM_TYPE_PARAMSIZE;
1415
1416    } else {
1417        SL_LOGE(ERROR_CONFIG_UNKNOWN_KEY);
1418        result = SL_RESULT_PARAMETER_INVALID;
1419    }
1420
1421    return result;
1422}
1423
1424
1425// Called from android_audioPlayer_realize for a PCM buffer queue player
1426// to determine if it can use a fast track.
1427static bool canUseFastTrack(CAudioPlayer *pAudioPlayer)
1428{
1429    assert(pAudioPlayer->mAndroidObjType == AUDIOPLAYER_FROM_PCM_BUFFERQUEUE);
1430
1431    // no need to check the buffer queue size, application side
1432    // double-buffering (and more) is not a requirement for using fast tracks
1433
1434    // Check a blacklist of interfaces that are incompatible with fast tracks.
1435    // The alternative, to check a whitelist of compatible interfaces, is
1436    // more maintainable but is too slow.  As a compromise, in a debug build
1437    // we use both methods and warn if they produce different results.
1438    // In release builds, we only use the blacklist method.
1439    // If a blacklisted interface is added after realization using
1440    // DynamicInterfaceManagement::AddInterface,
1441    // then this won't be detected but the interface will be ineffective.
1442    bool blacklistResult = true;
1443    static const unsigned blacklist[] = {
1444        MPH_BASSBOOST,
1445        MPH_EFFECTSEND,
1446        MPH_ENVIRONMENTALREVERB,
1447        MPH_EQUALIZER,
1448        MPH_PLAYBACKRATE,
1449        MPH_PRESETREVERB,
1450        MPH_VIRTUALIZER,
1451        MPH_ANDROIDEFFECT,
1452        MPH_ANDROIDEFFECTSEND,
1453        // FIXME The problem with a blacklist is remembering to add new interfaces here
1454    };
1455    for (unsigned i = 0; i < sizeof(blacklist)/sizeof(blacklist[0]); ++i) {
1456        if (IsInterfaceInitialized(&pAudioPlayer->mObject, blacklist[i])) {
1457            blacklistResult = false;
1458            break;
1459        }
1460    }
1461#if LOG_NDEBUG == 0
1462    bool whitelistResult = true;
1463    static const unsigned whitelist[] = {
1464        MPH_BUFFERQUEUE,
1465        MPH_DYNAMICINTERFACEMANAGEMENT,
1466        MPH_METADATAEXTRACTION,
1467        MPH_MUTESOLO,
1468        MPH_OBJECT,
1469        MPH_PLAY,
1470        MPH_PREFETCHSTATUS,
1471        MPH_VOLUME,
1472        MPH_ANDROIDCONFIGURATION,
1473        MPH_ANDROIDSIMPLEBUFFERQUEUE,
1474        MPH_ANDROIDBUFFERQUEUESOURCE,
1475    };
1476    for (unsigned mph = MPH_MIN; mph < MPH_MAX; ++mph) {
1477        for (unsigned i = 0; i < sizeof(whitelist)/sizeof(whitelist[0]); ++i) {
1478            if (mph == whitelist[i]) {
1479                goto compatible;
1480            }
1481        }
1482        if (IsInterfaceInitialized(&pAudioPlayer->mObject, mph)) {
1483            whitelistResult = false;
1484            break;
1485        }
1486compatible: ;
1487    }
1488    if (whitelistResult != blacklistResult) {
1489        ALOGW("whitelistResult != blacklistResult");
1490        // and use blacklistResult below
1491    }
1492#endif
1493    return blacklistResult;
1494}
1495
1496
1497//-----------------------------------------------------------------------------
1498// FIXME abstract out the diff between CMediaPlayer and CAudioPlayer
1499SLresult android_audioPlayer_realize(CAudioPlayer *pAudioPlayer, SLboolean async) {
1500
1501    SLresult result = SL_RESULT_SUCCESS;
1502    SL_LOGV("Realize pAudioPlayer=%p", pAudioPlayer);
1503
1504    AudioPlayback_Parameters app;
1505    app.sessionId = pAudioPlayer->mSessionId;
1506    app.streamType = pAudioPlayer->mStreamType;
1507
1508    switch (pAudioPlayer->mAndroidObjType) {
1509
1510    //-----------------------------------
1511    // AudioTrack
1512    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
1513        {
1514        // initialize platform-specific CAudioPlayer fields
1515
1516        SLDataLocator_BufferQueue *dl_bq = (SLDataLocator_BufferQueue *)
1517                pAudioPlayer->mDynamicSource.mDataSource;
1518        SLDataFormat_PCM *df_pcm = (SLDataFormat_PCM *)
1519                pAudioPlayer->mDynamicSource.mDataSource->pFormat;
1520
1521        uint32_t sampleRate = sles_to_android_sampleRate(df_pcm->samplesPerSec);
1522
1523        audio_output_flags_t policy;
1524        if (canUseFastTrack(pAudioPlayer)) {
1525            policy = AUDIO_OUTPUT_FLAG_FAST;
1526        } else {
1527            policy = AUDIO_OUTPUT_FLAG_NONE;
1528        }
1529
1530        pAudioPlayer->mAudioTrack = new android::AudioTrack(
1531                pAudioPlayer->mStreamType,                           // streamType
1532                sampleRate,                                          // sampleRate
1533                sles_to_android_sampleFormat(df_pcm),                // format
1534                sles_to_android_channelMaskOut(df_pcm->numChannels, df_pcm->channelMask),
1535                                                                     // channel mask
1536                0,                                                   // frameCount
1537                policy,                                              // flags
1538                audioTrack_callBack_pullFromBuffQueue,               // callback
1539                (void *) pAudioPlayer,                               // user
1540                0,     // FIXME find appropriate frame count         // notificationFrame
1541                pAudioPlayer->mSessionId);
1542        android::status_t status = pAudioPlayer->mAudioTrack->initCheck();
1543        if (status != android::NO_ERROR) {
1544            SL_LOGE("AudioTrack::initCheck status %u", status);
1545            // FIXME should return a more specific result depending on status
1546            result = SL_RESULT_CONTENT_UNSUPPORTED;
1547            pAudioPlayer->mAudioTrack.clear();
1548            return result;
1549        }
1550
1551        // initialize platform-independent CAudioPlayer fields
1552
1553        pAudioPlayer->mNumChannels = df_pcm->numChannels;
1554        pAudioPlayer->mSampleRateMilliHz = df_pcm->samplesPerSec; // Note: bad field name in SL ES
1555
1556        // This use case does not have a separate "prepare" step
1557        pAudioPlayer->mAndroidObjState = ANDROID_READY;
1558        }
1559        break;
1560
1561    //-----------------------------------
1562    // MediaPlayer
1563    case AUDIOPLAYER_FROM_URIFD: {
1564        pAudioPlayer->mAPlayer = new android::LocAVPlayer(&app, false /*hasVideo*/);
1565        pAudioPlayer->mAPlayer->init(sfplayer_handlePrefetchEvent,
1566                        (void*)pAudioPlayer /*notifUSer*/);
1567
1568        switch (pAudioPlayer->mDataSource.mLocator.mLocatorType) {
1569            case SL_DATALOCATOR_URI: {
1570                // The legacy implementation ran Stagefright within the application process, and
1571                // so allowed local pathnames specified by URI that were openable by
1572                // the application but were not openable by mediaserver.
1573                // The current implementation runs Stagefright (mostly) within mediaserver,
1574                // which runs as a different UID and likely a different current working directory.
1575                // For backwards compatibility with any applications which may have relied on the
1576                // previous behavior, we convert an openable file URI into an FD.
1577                // Note that unlike SL_DATALOCATOR_ANDROIDFD, this FD is owned by us
1578                // and so we close it as soon as we've passed it (via Binder dup) to mediaserver.
1579                const char *uri = (const char *)pAudioPlayer->mDataSource.mLocator.mURI.URI;
1580                if (!isDistantProtocol(uri)) {
1581                    // don't touch the original uri, we may need it later
1582                    const char *pathname = uri;
1583                    // skip over an optional leading file:// prefix
1584                    if (!strncasecmp(pathname, "file://", 7)) {
1585                        pathname += 7;
1586                    }
1587                    // attempt to open it as a file using the application's credentials
1588                    int fd = ::open(pathname, O_RDONLY);
1589                    if (fd >= 0) {
1590                        // if open is successful, then check to see if it's a regular file
1591                        struct stat statbuf;
1592                        if (!::fstat(fd, &statbuf) && S_ISREG(statbuf.st_mode)) {
1593                            // treat similarly to an FD data locator, but
1594                            // let setDataSource take responsibility for closing fd
1595                            pAudioPlayer->mAPlayer->setDataSource(fd, 0, statbuf.st_size, true);
1596                            break;
1597                        }
1598                        // we were able to open it, but it's not a file, so let mediaserver try
1599                        (void) ::close(fd);
1600                    }
1601                }
1602                // if either the URI didn't look like a file, or open failed, or not a file
1603                pAudioPlayer->mAPlayer->setDataSource(uri);
1604                } break;
1605            case SL_DATALOCATOR_ANDROIDFD: {
1606                int64_t offset = (int64_t)pAudioPlayer->mDataSource.mLocator.mFD.offset;
1607                pAudioPlayer->mAPlayer->setDataSource(
1608                        (int)pAudioPlayer->mDataSource.mLocator.mFD.fd,
1609                        offset == SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE ?
1610                                (int64_t)PLAYER_FD_FIND_FILE_SIZE : offset,
1611                        (int64_t)pAudioPlayer->mDataSource.mLocator.mFD.length);
1612                }
1613                break;
1614            default:
1615                SL_LOGE(ERROR_PLAYERREALIZE_UNKNOWN_DATASOURCE_LOCATOR);
1616                break;
1617        }
1618
1619        }
1620        break;
1621
1622    //-----------------------------------
1623    // StreamPlayer
1624    case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE: {
1625        android::StreamPlayer* splr = new android::StreamPlayer(&app, false /*hasVideo*/,
1626                &pAudioPlayer->mAndroidBufferQueue, pAudioPlayer->mCallbackProtector);
1627        pAudioPlayer->mAPlayer = splr;
1628        splr->init(sfplayer_handlePrefetchEvent, (void*)pAudioPlayer);
1629        }
1630        break;
1631
1632    //-----------------------------------
1633    // AudioToCbRenderer
1634    case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE: {
1635        android::AudioToCbRenderer* decoder = new android::AudioToCbRenderer(&app);
1636        pAudioPlayer->mAPlayer = decoder;
1637        // configures the callback for the sink buffer queue
1638        decoder->setDataPushListener(adecoder_writeToBufferQueue, pAudioPlayer);
1639        // configures the callback for the notifications coming from the SF code
1640        decoder->init(sfplayer_handlePrefetchEvent, (void*)pAudioPlayer);
1641
1642        switch (pAudioPlayer->mDataSource.mLocator.mLocatorType) {
1643        case SL_DATALOCATOR_URI:
1644            decoder->setDataSource(
1645                    (const char*)pAudioPlayer->mDataSource.mLocator.mURI.URI);
1646            break;
1647        case SL_DATALOCATOR_ANDROIDFD: {
1648            int64_t offset = (int64_t)pAudioPlayer->mDataSource.mLocator.mFD.offset;
1649            decoder->setDataSource(
1650                    (int)pAudioPlayer->mDataSource.mLocator.mFD.fd,
1651                    offset == SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE ?
1652                            (int64_t)PLAYER_FD_FIND_FILE_SIZE : offset,
1653                            (int64_t)pAudioPlayer->mDataSource.mLocator.mFD.length);
1654            }
1655            break;
1656        default:
1657            SL_LOGE(ERROR_PLAYERREALIZE_UNKNOWN_DATASOURCE_LOCATOR);
1658            break;
1659        }
1660
1661        }
1662        break;
1663
1664    //-----------------------------------
1665    // AacBqToPcmCbRenderer
1666    case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE: {
1667        android::AacBqToPcmCbRenderer* bqtobq = new android::AacBqToPcmCbRenderer(&app,
1668                &pAudioPlayer->mAndroidBufferQueue);
1669        // configures the callback for the sink buffer queue
1670        bqtobq->setDataPushListener(adecoder_writeToBufferQueue, pAudioPlayer);
1671        pAudioPlayer->mAPlayer = bqtobq;
1672        // configures the callback for the notifications coming from the SF code,
1673        // but also implicitly configures the AndroidBufferQueue from which ADTS data is read
1674        pAudioPlayer->mAPlayer->init(sfplayer_handlePrefetchEvent, (void*)pAudioPlayer);
1675        }
1676        break;
1677
1678    //-----------------------------------
1679    default:
1680        SL_LOGE(ERROR_PLAYERREALIZE_UNEXPECTED_OBJECT_TYPE_D, pAudioPlayer->mAndroidObjType);
1681        result = SL_RESULT_INTERNAL_ERROR;
1682        break;
1683    }
1684
1685    // proceed with effect initialization
1686    // initialize EQ
1687    // FIXME use a table of effect descriptors when adding support for more effects
1688    if (memcmp(SL_IID_EQUALIZER, &pAudioPlayer->mEqualizer.mEqDescriptor.type,
1689            sizeof(effect_uuid_t)) == 0) {
1690        SL_LOGV("Need to initialize EQ for AudioPlayer=%p", pAudioPlayer);
1691        android_eq_init(pAudioPlayer->mSessionId, &pAudioPlayer->mEqualizer);
1692    }
1693    // initialize BassBoost
1694    if (memcmp(SL_IID_BASSBOOST, &pAudioPlayer->mBassBoost.mBassBoostDescriptor.type,
1695            sizeof(effect_uuid_t)) == 0) {
1696        SL_LOGV("Need to initialize BassBoost for AudioPlayer=%p", pAudioPlayer);
1697        android_bb_init(pAudioPlayer->mSessionId, &pAudioPlayer->mBassBoost);
1698    }
1699    // initialize Virtualizer
1700    if (memcmp(SL_IID_VIRTUALIZER, &pAudioPlayer->mVirtualizer.mVirtualizerDescriptor.type,
1701               sizeof(effect_uuid_t)) == 0) {
1702        SL_LOGV("Need to initialize Virtualizer for AudioPlayer=%p", pAudioPlayer);
1703        android_virt_init(pAudioPlayer->mSessionId, &pAudioPlayer->mVirtualizer);
1704    }
1705
1706    // initialize EffectSend
1707    // FIXME initialize EffectSend
1708
1709    return result;
1710}
1711
1712
1713//-----------------------------------------------------------------------------
1714/**
1715 * Called with a lock on AudioPlayer, and blocks until safe to destroy
1716 */
1717SLresult android_audioPlayer_preDestroy(CAudioPlayer *pAudioPlayer) {
1718    SL_LOGD("android_audioPlayer_preDestroy(%p)", pAudioPlayer);
1719    SLresult result = SL_RESULT_SUCCESS;
1720
1721    bool disableCallbacksBeforePreDestroy;
1722    switch (pAudioPlayer->mAndroidObjType) {
1723    // Not yet clear why this order is important, but it reduces detected deadlocks
1724    case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1725        disableCallbacksBeforePreDestroy = true;
1726        break;
1727    // Use the old behavior for all other use cases until proven
1728    // case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1729    default:
1730        disableCallbacksBeforePreDestroy = false;
1731        break;
1732    }
1733
1734    if (disableCallbacksBeforePreDestroy) {
1735        object_unlock_exclusive(&pAudioPlayer->mObject);
1736        if (pAudioPlayer->mCallbackProtector != 0) {
1737            pAudioPlayer->mCallbackProtector->requestCbExitAndWait();
1738        }
1739        object_lock_exclusive(&pAudioPlayer->mObject);
1740    }
1741
1742    if (pAudioPlayer->mAPlayer != 0) {
1743        pAudioPlayer->mAPlayer->preDestroy();
1744    }
1745    SL_LOGD("android_audioPlayer_preDestroy(%p) after mAPlayer->preDestroy()", pAudioPlayer);
1746
1747    if (!disableCallbacksBeforePreDestroy) {
1748        object_unlock_exclusive(&pAudioPlayer->mObject);
1749        if (pAudioPlayer->mCallbackProtector != 0) {
1750            pAudioPlayer->mCallbackProtector->requestCbExitAndWait();
1751        }
1752        object_lock_exclusive(&pAudioPlayer->mObject);
1753    }
1754
1755    return result;
1756}
1757
1758
1759//-----------------------------------------------------------------------------
1760SLresult android_audioPlayer_destroy(CAudioPlayer *pAudioPlayer) {
1761    SLresult result = SL_RESULT_SUCCESS;
1762    SL_LOGV("android_audioPlayer_destroy(%p)", pAudioPlayer);
1763    switch (pAudioPlayer->mAndroidObjType) {
1764
1765    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
1766        // We own the audio track for PCM buffer queue players
1767        if (pAudioPlayer->mAudioTrack != 0) {
1768            pAudioPlayer->mAudioTrack->stop();
1769            // Note that there may still be another reference in post-unlock phase of SetPlayState
1770            pAudioPlayer->mAudioTrack.clear();
1771        }
1772        break;
1773
1774    case AUDIOPLAYER_FROM_URIFD:     // intended fall-through
1775    case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:    // intended fall-through
1776    case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE: // intended fall-through
1777    case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1778        pAudioPlayer->mAPlayer.clear();
1779        break;
1780    //-----------------------------------
1781    default:
1782        SL_LOGE(ERROR_PLAYERDESTROY_UNEXPECTED_OBJECT_TYPE_D, pAudioPlayer->mAndroidObjType);
1783        result = SL_RESULT_INTERNAL_ERROR;
1784        break;
1785    }
1786
1787    // placeholder: not necessary yet as session ID lifetime doesn't extend beyond player
1788    // android::AudioSystem::releaseAudioSessionId(pAudioPlayer->mSessionId);
1789
1790    pAudioPlayer->mCallbackProtector.clear();
1791
1792    // explicit destructor
1793    pAudioPlayer->mAudioTrack.~sp();
1794    // note that SetPlayState(PLAYING) may still hold a reference
1795    pAudioPlayer->mCallbackProtector.~sp();
1796    pAudioPlayer->mAuxEffect.~sp();
1797    pAudioPlayer->mAPlayer.~sp();
1798
1799    return result;
1800}
1801
1802
1803//-----------------------------------------------------------------------------
1804SLresult android_audioPlayer_setPlaybackRateAndConstraints(CAudioPlayer *ap, SLpermille rate,
1805        SLuint32 constraints) {
1806    SLresult result = SL_RESULT_SUCCESS;
1807    switch(ap->mAndroidObjType) {
1808    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE: {
1809        // these asserts were already checked by the platform-independent layer
1810        assert((AUDIOTRACK_MIN_PLAYBACKRATE_PERMILLE <= rate) &&
1811                (rate <= AUDIOTRACK_MAX_PLAYBACKRATE_PERMILLE));
1812        assert(constraints & SL_RATEPROP_NOPITCHCORAUDIO);
1813        // get the content sample rate
1814        uint32_t contentRate = sles_to_android_sampleRate(ap->mSampleRateMilliHz);
1815        // apply the SL ES playback rate on the AudioTrack as a factor of its content sample rate
1816        if (ap->mAudioTrack != 0) {
1817            ap->mAudioTrack->setSampleRate(contentRate * (rate/1000.0f));
1818        }
1819        }
1820        break;
1821    case AUDIOPLAYER_FROM_URIFD: {
1822        assert((MEDIAPLAYER_MIN_PLAYBACKRATE_PERMILLE <= rate) &&
1823                        (rate <= MEDIAPLAYER_MAX_PLAYBACKRATE_PERMILLE));
1824        assert(constraints & SL_RATEPROP_NOPITCHCORAUDIO);
1825        // apply the SL ES playback rate on the GenericPlayer
1826        if (ap->mAPlayer != 0) {
1827            ap->mAPlayer->setPlaybackRate((int16_t)rate);
1828        }
1829        }
1830        break;
1831
1832    default:
1833        SL_LOGE("Unexpected object type %d", ap->mAndroidObjType);
1834        result = SL_RESULT_FEATURE_UNSUPPORTED;
1835        break;
1836    }
1837    return result;
1838}
1839
1840
1841//-----------------------------------------------------------------------------
1842// precondition
1843//  called with no lock held
1844//  ap != NULL
1845//  pItemCount != NULL
1846SLresult android_audioPlayer_metadata_getItemCount(CAudioPlayer *ap, SLuint32 *pItemCount) {
1847    if (ap->mAPlayer == 0) {
1848        return SL_RESULT_PARAMETER_INVALID;
1849    }
1850    switch(ap->mAndroidObjType) {
1851      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1852      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1853        {
1854            android::AudioSfDecoder* decoder =
1855                    static_cast<android::AudioSfDecoder*>(ap->mAPlayer.get());
1856            *pItemCount = decoder->getPcmFormatKeyCount();
1857        }
1858        break;
1859      default:
1860        *pItemCount = 0;
1861        break;
1862    }
1863    return SL_RESULT_SUCCESS;
1864}
1865
1866
1867//-----------------------------------------------------------------------------
1868// precondition
1869//  called with no lock held
1870//  ap != NULL
1871//  pKeySize != NULL
1872SLresult android_audioPlayer_metadata_getKeySize(CAudioPlayer *ap,
1873        SLuint32 index, SLuint32 *pKeySize) {
1874    if (ap->mAPlayer == 0) {
1875        return SL_RESULT_PARAMETER_INVALID;
1876    }
1877    SLresult res = SL_RESULT_SUCCESS;
1878    switch(ap->mAndroidObjType) {
1879      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1880      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1881        {
1882            android::AudioSfDecoder* decoder =
1883                    static_cast<android::AudioSfDecoder*>(ap->mAPlayer.get());
1884            SLuint32 keyNameSize = 0;
1885            if (!decoder->getPcmFormatKeySize(index, &keyNameSize)) {
1886                res = SL_RESULT_PARAMETER_INVALID;
1887            } else {
1888                // *pKeySize is the size of the region used to store the key name AND
1889                //   the information about the key (size, lang, encoding)
1890                *pKeySize = keyNameSize + sizeof(SLMetadataInfo);
1891            }
1892        }
1893        break;
1894      default:
1895        *pKeySize = 0;
1896        res = SL_RESULT_PARAMETER_INVALID;
1897        break;
1898    }
1899    return res;
1900}
1901
1902
1903//-----------------------------------------------------------------------------
1904// precondition
1905//  called with no lock held
1906//  ap != NULL
1907//  pKey != NULL
1908SLresult android_audioPlayer_metadata_getKey(CAudioPlayer *ap,
1909        SLuint32 index, SLuint32 size, SLMetadataInfo *pKey) {
1910    if (ap->mAPlayer == 0) {
1911        return SL_RESULT_PARAMETER_INVALID;
1912    }
1913    SLresult res = SL_RESULT_SUCCESS;
1914    switch(ap->mAndroidObjType) {
1915      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1916      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1917        {
1918            android::AudioSfDecoder* decoder =
1919                    static_cast<android::AudioSfDecoder*>(ap->mAPlayer.get());
1920            if ((size < sizeof(SLMetadataInfo) ||
1921                    (!decoder->getPcmFormatKeyName(index, size - sizeof(SLMetadataInfo),
1922                            (char*)pKey->data)))) {
1923                res = SL_RESULT_PARAMETER_INVALID;
1924            } else {
1925                // successfully retrieved the key value, update the other fields
1926                pKey->encoding = SL_CHARACTERENCODING_UTF8;
1927                memcpy((char *) pKey->langCountry, "en", 3);
1928                pKey->size = strlen((char*)pKey->data) + 1;
1929            }
1930        }
1931        break;
1932      default:
1933        res = SL_RESULT_PARAMETER_INVALID;
1934        break;
1935    }
1936    return res;
1937}
1938
1939
1940//-----------------------------------------------------------------------------
1941// precondition
1942//  called with no lock held
1943//  ap != NULL
1944//  pValueSize != NULL
1945SLresult android_audioPlayer_metadata_getValueSize(CAudioPlayer *ap,
1946        SLuint32 index, SLuint32 *pValueSize) {
1947    if (ap->mAPlayer == 0) {
1948        return SL_RESULT_PARAMETER_INVALID;
1949    }
1950    SLresult res = SL_RESULT_SUCCESS;
1951    switch(ap->mAndroidObjType) {
1952      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1953      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1954        {
1955            android::AudioSfDecoder* decoder =
1956                    static_cast<android::AudioSfDecoder*>(ap->mAPlayer.get());
1957            SLuint32 valueSize = 0;
1958            if (!decoder->getPcmFormatValueSize(index, &valueSize)) {
1959                res = SL_RESULT_PARAMETER_INVALID;
1960            } else {
1961                // *pValueSize is the size of the region used to store the key value AND
1962                //   the information about the value (size, lang, encoding)
1963                *pValueSize = valueSize + sizeof(SLMetadataInfo);
1964            }
1965        }
1966        break;
1967      default:
1968          *pValueSize = 0;
1969          res = SL_RESULT_PARAMETER_INVALID;
1970          break;
1971    }
1972    return res;
1973}
1974
1975
1976//-----------------------------------------------------------------------------
1977// precondition
1978//  called with no lock held
1979//  ap != NULL
1980//  pValue != NULL
1981SLresult android_audioPlayer_metadata_getValue(CAudioPlayer *ap,
1982        SLuint32 index, SLuint32 size, SLMetadataInfo *pValue) {
1983    if (ap->mAPlayer == 0) {
1984        return SL_RESULT_PARAMETER_INVALID;
1985    }
1986    SLresult res = SL_RESULT_SUCCESS;
1987    switch(ap->mAndroidObjType) {
1988      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
1989      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
1990        {
1991            android::AudioSfDecoder* decoder =
1992                    static_cast<android::AudioSfDecoder*>(ap->mAPlayer.get());
1993            pValue->encoding = SL_CHARACTERENCODING_BINARY;
1994            memcpy((char *) pValue->langCountry, "en", 3); // applicable here?
1995            SLuint32 valueSize = 0;
1996            if ((size < sizeof(SLMetadataInfo)
1997                    || (!decoder->getPcmFormatValueSize(index, &valueSize))
1998                    || (!decoder->getPcmFormatKeyValue(index, size - sizeof(SLMetadataInfo),
1999                            (SLuint32*)pValue->data)))) {
2000                res = SL_RESULT_PARAMETER_INVALID;
2001            } else {
2002                pValue->size = valueSize;
2003            }
2004        }
2005        break;
2006      default:
2007        res = SL_RESULT_PARAMETER_INVALID;
2008        break;
2009    }
2010    return res;
2011}
2012
2013//-----------------------------------------------------------------------------
2014// preconditions
2015//  ap != NULL
2016//  mutex is locked
2017//  play state has changed
2018void android_audioPlayer_setPlayState(CAudioPlayer *ap) {
2019
2020    SLuint32 playState = ap->mPlay.mState;
2021    AndroidObjectState objState = ap->mAndroidObjState;
2022
2023    switch(ap->mAndroidObjType) {
2024    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
2025        switch (playState) {
2026        case SL_PLAYSTATE_STOPPED:
2027            SL_LOGV("setting AudioPlayer to SL_PLAYSTATE_STOPPED");
2028            if (ap->mAudioTrack != 0) {
2029                ap->mAudioTrack->stop();
2030            }
2031            break;
2032        case SL_PLAYSTATE_PAUSED:
2033            SL_LOGV("setting AudioPlayer to SL_PLAYSTATE_PAUSED");
2034            if (ap->mAudioTrack != 0) {
2035                ap->mAudioTrack->pause();
2036            }
2037            break;
2038        case SL_PLAYSTATE_PLAYING:
2039            SL_LOGV("setting AudioPlayer to SL_PLAYSTATE_PLAYING");
2040            if (ap->mAudioTrack != 0) {
2041                // instead of ap->mAudioTrack->start();
2042                ap->mDeferredStart = true;
2043            }
2044            break;
2045        default:
2046            // checked by caller, should not happen
2047            break;
2048        }
2049        break;
2050
2051    case AUDIOPLAYER_FROM_URIFD:      // intended fall-through
2052    case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:     // intended fall-through
2053    case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:  // intended fall-through
2054    case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
2055        // FIXME report and use the return code to the lock mechanism, which is where play state
2056        //   changes are updated (see object_unlock_exclusive_attributes())
2057        aplayer_setPlayState(ap->mAPlayer, playState, &(ap->mAndroidObjState));
2058        break;
2059    default:
2060        SL_LOGE(ERROR_PLAYERSETPLAYSTATE_UNEXPECTED_OBJECT_TYPE_D, ap->mAndroidObjType);
2061        break;
2062    }
2063}
2064
2065
2066//-----------------------------------------------------------------------------
2067// call when either player event flags, marker position, or position update period changes
2068void android_audioPlayer_usePlayEventMask(CAudioPlayer *ap) {
2069    IPlay *pPlayItf = &ap->mPlay;
2070    SLuint32 eventFlags = pPlayItf->mEventFlags;
2071    /*switch(ap->mAndroidObjType) {
2072    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:*/
2073
2074    if (ap->mAPlayer != 0) {
2075        assert(ap->mAudioTrack == 0);
2076        ap->mAPlayer->setPlayEvents((int32_t) eventFlags, (int32_t) pPlayItf->mMarkerPosition,
2077                (int32_t) pPlayItf->mPositionUpdatePeriod);
2078        return;
2079    }
2080
2081    if (ap->mAudioTrack == 0) {
2082        return;
2083    }
2084
2085    if (eventFlags & SL_PLAYEVENT_HEADATMARKER) {
2086        ap->mAudioTrack->setMarkerPosition((uint32_t)((((int64_t)pPlayItf->mMarkerPosition
2087                * sles_to_android_sampleRate(ap->mSampleRateMilliHz)))/1000));
2088    } else {
2089        // clear marker
2090        ap->mAudioTrack->setMarkerPosition(0);
2091    }
2092
2093    if (eventFlags & SL_PLAYEVENT_HEADATNEWPOS) {
2094         ap->mAudioTrack->setPositionUpdatePeriod(
2095                (uint32_t)((((int64_t)pPlayItf->mPositionUpdatePeriod
2096                * sles_to_android_sampleRate(ap->mSampleRateMilliHz)))/1000));
2097    } else {
2098        // clear periodic update
2099        ap->mAudioTrack->setPositionUpdatePeriod(0);
2100    }
2101
2102    if (eventFlags & SL_PLAYEVENT_HEADATEND) {
2103        // nothing to do for SL_PLAYEVENT_HEADATEND, callback event will be checked against mask
2104    }
2105
2106    if (eventFlags & SL_PLAYEVENT_HEADMOVING) {
2107        // FIXME support SL_PLAYEVENT_HEADMOVING
2108        SL_LOGD("[ FIXME: IPlay_SetCallbackEventsMask(SL_PLAYEVENT_HEADMOVING) on an "
2109            "SL_OBJECTID_AUDIOPLAYER to be implemented ]");
2110    }
2111    if (eventFlags & SL_PLAYEVENT_HEADSTALLED) {
2112        // nothing to do for SL_PLAYEVENT_HEADSTALLED, callback event will be checked against mask
2113    }
2114
2115}
2116
2117
2118//-----------------------------------------------------------------------------
2119SLresult android_audioPlayer_getDuration(IPlay *pPlayItf, SLmillisecond *pDurMsec) {
2120    CAudioPlayer *ap = (CAudioPlayer *)pPlayItf->mThis;
2121    switch(ap->mAndroidObjType) {
2122
2123      case AUDIOPLAYER_FROM_URIFD:  // intended fall-through
2124      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE: {
2125        int32_t durationMsec = ANDROID_UNKNOWN_TIME;
2126        if (ap->mAPlayer != 0) {
2127            ap->mAPlayer->getDurationMsec(&durationMsec);
2128        }
2129        *pDurMsec = durationMsec == ANDROID_UNKNOWN_TIME ? SL_TIME_UNKNOWN : durationMsec;
2130        break;
2131      }
2132
2133      case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE: // intended fall-through
2134      case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
2135      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
2136      default: {
2137        *pDurMsec = SL_TIME_UNKNOWN;
2138      }
2139    }
2140    return SL_RESULT_SUCCESS;
2141}
2142
2143
2144//-----------------------------------------------------------------------------
2145void android_audioPlayer_getPosition(IPlay *pPlayItf, SLmillisecond *pPosMsec) {
2146    CAudioPlayer *ap = (CAudioPlayer *)pPlayItf->mThis;
2147    switch(ap->mAndroidObjType) {
2148
2149      case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
2150        if ((ap->mSampleRateMilliHz == UNKNOWN_SAMPLERATE) || (ap->mAudioTrack == 0)) {
2151            *pPosMsec = 0;
2152        } else {
2153            uint32_t positionInFrames;
2154            ap->mAudioTrack->getPosition(&positionInFrames);
2155            *pPosMsec = ((int64_t)positionInFrames * 1000) /
2156                    sles_to_android_sampleRate(ap->mSampleRateMilliHz);
2157        }
2158        break;
2159
2160      case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:    // intended fall-through
2161      case AUDIOPLAYER_FROM_URIFD:
2162      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
2163      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE: {
2164        int32_t posMsec = ANDROID_UNKNOWN_TIME;
2165        if (ap->mAPlayer != 0) {
2166            ap->mAPlayer->getPositionMsec(&posMsec);
2167        }
2168        *pPosMsec = posMsec == ANDROID_UNKNOWN_TIME ? 0 : posMsec;
2169        break;
2170      }
2171
2172      default:
2173        *pPosMsec = 0;
2174    }
2175}
2176
2177
2178//-----------------------------------------------------------------------------
2179SLresult android_audioPlayer_seek(CAudioPlayer *ap, SLmillisecond posMsec) {
2180    SLresult result = SL_RESULT_SUCCESS;
2181
2182    switch(ap->mAndroidObjType) {
2183
2184      case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:      // intended fall-through
2185      case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:
2186      case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
2187        result = SL_RESULT_FEATURE_UNSUPPORTED;
2188        break;
2189
2190      case AUDIOPLAYER_FROM_URIFD:                   // intended fall-through
2191      case AUDIOPLAYER_FROM_URIFD_TO_PCM_BUFFERQUEUE:
2192        if (ap->mAPlayer != 0) {
2193            ap->mAPlayer->seek(posMsec);
2194        }
2195        break;
2196
2197      default:
2198        break;
2199    }
2200    return result;
2201}
2202
2203
2204//-----------------------------------------------------------------------------
2205SLresult android_audioPlayer_loop(CAudioPlayer *ap, SLboolean loopEnable) {
2206    SLresult result = SL_RESULT_SUCCESS;
2207
2208    switch (ap->mAndroidObjType) {
2209    case AUDIOPLAYER_FROM_URIFD:
2210    // case AUDIOPLAY_FROM_URIFD_TO_PCM_BUFFERQUEUE:
2211    //      would actually work, but what's the point?
2212      if (ap->mAPlayer != 0) {
2213        ap->mAPlayer->loop((bool)loopEnable);
2214      }
2215      break;
2216    default:
2217      result = SL_RESULT_FEATURE_UNSUPPORTED;
2218      break;
2219    }
2220    return result;
2221}
2222
2223
2224//-----------------------------------------------------------------------------
2225SLresult android_audioPlayer_setBufferingUpdateThresholdPerMille(CAudioPlayer *ap,
2226        SLpermille threshold) {
2227    SLresult result = SL_RESULT_SUCCESS;
2228
2229    switch (ap->mAndroidObjType) {
2230      case AUDIOPLAYER_FROM_URIFD:
2231        if (ap->mAPlayer != 0) {
2232            ap->mAPlayer->setBufferingUpdateThreshold(threshold / 10);
2233        }
2234        break;
2235
2236      default: {}
2237    }
2238
2239    return result;
2240}
2241
2242
2243//-----------------------------------------------------------------------------
2244void android_audioPlayer_bufferQueue_onRefilled_l(CAudioPlayer *ap) {
2245    // the AudioTrack associated with the AudioPlayer receiving audio from a PCM buffer
2246    // queue was stopped when the queue become empty, we restart as soon as a new buffer
2247    // has been enqueued since we're in playing state
2248    if (ap->mAudioTrack != 0) {
2249        // instead of ap->mAudioTrack->start();
2250        ap->mDeferredStart = true;
2251    }
2252
2253    // when the queue became empty, an underflow on the prefetch status itf was sent. Now the queue
2254    // has received new data, signal it has sufficient data
2255    if (IsInterfaceInitialized(&(ap->mObject), MPH_PREFETCHSTATUS)) {
2256        // we wouldn't have been called unless we were previously in the underflow state
2257        assert(SL_PREFETCHSTATUS_UNDERFLOW == ap->mPrefetchStatus.mStatus);
2258        assert(0 == ap->mPrefetchStatus.mLevel);
2259        ap->mPrefetchStatus.mStatus = SL_PREFETCHSTATUS_SUFFICIENTDATA;
2260        ap->mPrefetchStatus.mLevel = 1000;
2261        // callback or no callback?
2262        SLuint32 prefetchEvents = ap->mPrefetchStatus.mCallbackEventsMask &
2263                (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE);
2264        if (SL_PREFETCHEVENT_NONE != prefetchEvents) {
2265            ap->mPrefetchStatus.mDeferredPrefetchCallback = ap->mPrefetchStatus.mCallback;
2266            ap->mPrefetchStatus.mDeferredPrefetchContext  = ap->mPrefetchStatus.mContext;
2267            ap->mPrefetchStatus.mDeferredPrefetchEvents   = prefetchEvents;
2268        }
2269    }
2270}
2271
2272
2273//-----------------------------------------------------------------------------
2274/*
2275 * BufferQueue::Clear
2276 */
2277SLresult android_audioPlayer_bufferQueue_onClear(CAudioPlayer *ap) {
2278    SLresult result = SL_RESULT_SUCCESS;
2279
2280    switch (ap->mAndroidObjType) {
2281    //-----------------------------------
2282    // AudioTrack
2283    case AUDIOPLAYER_FROM_PCM_BUFFERQUEUE:
2284        if (ap->mAudioTrack != 0) {
2285            ap->mAudioTrack->flush();
2286        }
2287        break;
2288    default:
2289        result = SL_RESULT_INTERNAL_ERROR;
2290        break;
2291    }
2292
2293    return result;
2294}
2295
2296
2297//-----------------------------------------------------------------------------
2298void android_audioPlayer_androidBufferQueue_clear_l(CAudioPlayer *ap) {
2299    switch (ap->mAndroidObjType) {
2300    case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:
2301      if (ap->mAPlayer != 0) {
2302        android::StreamPlayer* splr = static_cast<android::StreamPlayer*>(ap->mAPlayer.get());
2303        splr->appClear_l();
2304      } break;
2305    case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
2306      // nothing to do here, fall through
2307    default:
2308      break;
2309    }
2310}
2311
2312void android_audioPlayer_androidBufferQueue_onRefilled_l(CAudioPlayer *ap) {
2313    switch (ap->mAndroidObjType) {
2314    case AUDIOPLAYER_FROM_TS_ANDROIDBUFFERQUEUE:
2315      if (ap->mAPlayer != 0) {
2316        android::StreamPlayer* splr = static_cast<android::StreamPlayer*>(ap->mAPlayer.get());
2317        splr->queueRefilled();
2318      } break;
2319    case AUDIOPLAYER_FROM_ADTS_ABQ_TO_PCM_BUFFERQUEUE:
2320      // FIXME this may require waking up the decoder if it is currently starved and isn't polling
2321    default:
2322      break;
2323    }
2324}
2325