JetPlayer.cpp revision 5e07b5774c8b376776caa4f5b0a193767697e97e 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_NDEBUG 0
18#define LOG_TAG "JetPlayer-C"
19
20#include <utils/Log.h>
21#include <utils/threads.h>
22
23#include <media/JetPlayer.h>
24
25
26#ifdef HAVE_GETTID
27static pid_t myTid() { return gettid(); }
28#else
29static pid_t myTid() { return getpid(); }
30#endif
31
32
33namespace android
34{
35
36static const int MIX_NUM_BUFFERS = 4;
37static const S_EAS_LIB_CONFIG* pLibConfig = NULL;
38
39//-------------------------------------------------------------------------------------------------
40JetPlayer::JetPlayer(jobject javaJetPlayer, int maxTracks, int trackBufferSize) :
41        mEventCallback(NULL),
42        mJavaJetPlayerRef(javaJetPlayer),
43        mTid(-1),
44        mRender(false),
45        mPaused(false),
46        mMaxTracks(maxTracks),
47        mEasData(NULL),
48        mEasJetFileLoc(NULL),
49        mAudioTrack(NULL),
50        mTrackBufferSize(trackBufferSize)
51{
52    LOGV("JetPlayer constructor");
53    mPreviousJetStatus.currentUserID = -1;
54    mPreviousJetStatus.segmentRepeatCount = -1;
55    mPreviousJetStatus.numQueuedSegments = -1;
56    mPreviousJetStatus.paused = true;
57}
58
59//-------------------------------------------------------------------------------------------------
60JetPlayer::~JetPlayer()
61{
62    LOGV("~JetPlayer");
63    release();
64
65}
66
67//-------------------------------------------------------------------------------------------------
68int JetPlayer::init()
69{
70    //Mutex::Autolock lock(&mMutex);
71
72    EAS_RESULT result;
73
74    // retrieve the EAS library settings
75    if (pLibConfig == NULL)
76        pLibConfig = EAS_Config();
77    if (pLibConfig == NULL) {
78        LOGE("JetPlayer::init(): EAS library configuration could not be retrieved, aborting.");
79        return EAS_FAILURE;
80    }
81
82    // init the EAS library
83    result = EAS_Init(&mEasData);
84    if( result != EAS_SUCCESS) {
85        LOGE("JetPlayer::init(): Error initializing Sonivox EAS library, aborting.");
86        mState = EAS_STATE_ERROR;
87        return result;
88    }
89    // init the JET library
90    result = JET_Init(mEasData, NULL, 0);
91    if( result != EAS_SUCCESS) {
92        LOGE("JetPlayer::init(): Error initializing JET library, aborting.");
93        mState = EAS_STATE_ERROR;
94        return result;
95    }
96
97    // create the output AudioTrack
98    mAudioTrack = new AudioTrack();
99    mAudioTrack->set(AudioTrack::MUSIC,  //TODO parametrize this
100            pLibConfig->sampleRate,
101            1, // format = PCM 16bits per sample,
102            pLibConfig->numChannels,
103            mTrackBufferSize,
104            0);
105
106    // create render and playback thread
107    {
108        Mutex::Autolock l(mMutex);
109        LOGV("JetPlayer::init(): trying to start render thread");
110        createThreadEtc(renderThread, this, "jetRenderThread", ANDROID_PRIORITY_AUDIO);
111        mCondition.wait(mMutex);
112    }
113    if (mTid > 0) {
114        // render thread started, we're ready
115        LOGV("JetPlayer::init(): render thread(%d) successfully started.", mTid);
116        mState = EAS_STATE_READY;
117    } else {
118        LOGE("JetPlayer::init(): failed to start render thread.");
119        mState = EAS_STATE_ERROR;
120        return EAS_FAILURE;
121    }
122
123    return EAS_SUCCESS;
124}
125
126void JetPlayer::setEventCallback(jetevent_callback eventCallback)
127{
128    Mutex::Autolock l(mMutex);
129    mEventCallback = eventCallback;
130}
131
132//-------------------------------------------------------------------------------------------------
133int JetPlayer::release()
134{
135    LOGV("JetPlayer::release()");
136    Mutex::Autolock lock(mMutex);
137    mPaused = true;
138    mRender = false;
139    if (mEasData) {
140        JET_Pause(mEasData);
141        JET_CloseFile(mEasData);
142        JET_Shutdown(mEasData);
143        EAS_Shutdown(mEasData);
144    }
145    if (mEasJetFileLoc) {
146        free(mEasJetFileLoc);
147        mEasJetFileLoc = NULL;
148    }
149    if (mAudioTrack) {
150        mAudioTrack->stop();
151        mAudioTrack->flush();
152        delete mAudioTrack;
153        mAudioTrack = NULL;
154    }
155    if (mAudioBuffer) {
156        delete mAudioBuffer;
157        mAudioBuffer = NULL;
158    }
159    mEasData = NULL;
160
161    return EAS_SUCCESS;
162}
163
164
165//-------------------------------------------------------------------------------------------------
166int JetPlayer::renderThread(void* p) {
167
168    return ((JetPlayer*)p)->render();
169}
170
171//-------------------------------------------------------------------------------------------------
172int JetPlayer::render() {
173    EAS_RESULT result = EAS_FAILURE;
174    EAS_I32 count;
175    int temp;
176    bool audioStarted = false;
177
178    LOGV("JetPlayer::render(): entering");
179
180    // allocate render buffer
181    mAudioBuffer =
182        new EAS_PCM[pLibConfig->mixBufferSize * pLibConfig->numChannels * MIX_NUM_BUFFERS];
183    if (!mAudioBuffer) {
184        LOGE("JetPlayer::render(): mAudioBuffer allocate failed");
185        goto threadExit;
186    }
187
188    // signal main thread that we started
189    {
190        Mutex::Autolock l(mMutex);
191        mTid = myTid();
192        LOGV("JetPlayer::render(): render thread(%d) signal", mTid);
193        mCondition.signal();
194    }
195
196   while (1) {
197        mMutex.lock(); // [[[[[[[[ LOCK ---------------------------------------
198
199        // nothing to render, wait for client thread to wake us up
200        while (!mRender)
201        {
202            LOGV("JetPlayer::render(): signal wait");
203            mCondition.wait(mMutex);
204            LOGV("JetPlayer::render(): signal rx'd");
205        }
206
207        // render midi data into the input buffer
208        int num_output = 0;
209        EAS_PCM* p = mAudioBuffer;
210        for (int i = 0; i < MIX_NUM_BUFFERS; i++) {
211            result = EAS_Render(mEasData, p, pLibConfig->mixBufferSize, &count);
212            if (result != EAS_SUCCESS) {
213                LOGE("JetPlayer::render(): EAS_Render returned error %ld", result);
214            }
215            p += count * pLibConfig->numChannels;
216            num_output += count * pLibConfig->numChannels * sizeof(EAS_PCM);
217
218             // send events that were generated (if any) to the event callback
219            fireEventsFromJetQueue();
220        }
221
222        // update playback state
223        //LOGV("JetPlayer::render(): updating state");
224        JET_Status(mEasData, &mJetStatus);
225        fireUpdateOnStatusChange();
226        mPaused = mJetStatus.paused;
227
228        mMutex.unlock(); // UNLOCK ]]]]]]]] -----------------------------------
229
230        // check audio output track
231        if (mAudioTrack == NULL) {
232            LOGE("JetPlayer::render(): output AudioTrack was not created");
233            goto threadExit;
234        }
235
236        // Write data to the audio hardware
237        //LOGV("JetPlayer::render(): writing to audio output");
238        if ((temp = mAudioTrack->write(mAudioBuffer, num_output)) < 0) {
239            LOGE("JetPlayer::render(): Error in writing:%d",temp);
240            return temp;
241        }
242
243        // start audio output if necessary
244        if (!audioStarted) {
245            LOGV("JetPlayer::render(): starting audio playback");
246            mAudioTrack->start();
247            audioStarted = true;
248        }
249
250    }//while (1)
251
252threadExit:
253    mAudioTrack->flush();
254    if (mAudioBuffer) {
255        delete [] mAudioBuffer;
256        mAudioBuffer = NULL;
257    }
258    mMutex.lock();
259    mTid = -1;
260    mCondition.signal();
261    mMutex.unlock();
262    return result;
263}
264
265
266//-------------------------------------------------------------------------------------------------
267// fire up an update if any of the status fields has changed
268// precondition: mMutex locked
269void JetPlayer::fireUpdateOnStatusChange()
270{
271    if(  (mJetStatus.currentUserID      != mPreviousJetStatus.currentUserID)
272       ||(mJetStatus.segmentRepeatCount != mPreviousJetStatus.segmentRepeatCount) ) {
273        if(mEventCallback)  {
274            mEventCallback(
275                JetPlayer::JET_USERID_UPDATE,
276                mJetStatus.currentUserID,
277                mJetStatus.segmentRepeatCount,
278                mJavaJetPlayerRef);
279        }
280        mPreviousJetStatus.currentUserID      = mJetStatus.currentUserID;
281        mPreviousJetStatus.segmentRepeatCount = mJetStatus.segmentRepeatCount;
282    }
283
284    if(mJetStatus.numQueuedSegments != mPreviousJetStatus.numQueuedSegments) {
285        if(mEventCallback)  {
286            mEventCallback(
287                JetPlayer::JET_NUMQUEUEDSEGMENT_UPDATE,
288                mJetStatus.numQueuedSegments,
289                -1,
290                mJavaJetPlayerRef);
291        }
292        mPreviousJetStatus.numQueuedSegments  = mJetStatus.numQueuedSegments;
293    }
294
295    if(mJetStatus.paused != mPreviousJetStatus.paused) {
296        if(mEventCallback)  {
297            mEventCallback(JetPlayer::JET_PAUSE_UPDATE,
298                mJetStatus.paused,
299                -1,
300                mJavaJetPlayerRef);
301        }
302        mPreviousJetStatus.paused = mJetStatus.paused;
303    }
304
305}
306
307
308//-------------------------------------------------------------------------------------------------
309// fire up all the JET events in the JET engine queue (until the queue is empty)
310// precondition: mMutex locked
311void JetPlayer::fireEventsFromJetQueue()
312{
313    if(!mEventCallback) {
314        // no callback, just empty the event queue
315        while (JET_GetEvent(mEasData, NULL, NULL)) { }
316        return;
317    }
318
319    EAS_U32 rawEvent;
320    while (JET_GetEvent(mEasData, &rawEvent, NULL)) {
321        mEventCallback(
322            JetPlayer::JET_EVENT,
323            rawEvent,
324            -1,
325            mJavaJetPlayerRef);
326    }
327}
328
329
330//-------------------------------------------------------------------------------------------------
331int JetPlayer::loadFromFile(const char* path)
332{
333    LOGV("JetPlayer::loadFromFile(): path=%s", path);
334
335    Mutex::Autolock lock(mMutex);
336
337    mEasJetFileLoc = (EAS_FILE_LOCATOR) malloc(sizeof(EAS_FILE));
338    memset(mJetFilePath, 0, 256);
339    strncpy(mJetFilePath, path, strlen(path));
340    mEasJetFileLoc->path = mJetFilePath;
341
342    mEasJetFileLoc->fd = 0;
343    mEasJetFileLoc->length = 0;
344    mEasJetFileLoc->offset = 0;
345
346    EAS_RESULT result = JET_OpenFile(mEasData, mEasJetFileLoc);
347    if(result != EAS_SUCCESS)
348        mState = EAS_STATE_ERROR;
349    else
350        mState = EAS_STATE_OPEN;
351    return( result );
352}
353
354
355//-------------------------------------------------------------------------------------------------
356int JetPlayer::loadFromFD(const int fd, const long long offset, const long long length)
357{
358    LOGV("JetPlayer::loadFromFD(): fd=%d offset=%lld length=%lld", fd, offset, length);
359
360    Mutex::Autolock lock(mMutex);
361
362    mEasJetFileLoc = (EAS_FILE_LOCATOR) malloc(sizeof(EAS_FILE));
363    mEasJetFileLoc->fd = fd;
364    mEasJetFileLoc->offset = offset;
365    mEasJetFileLoc->length = length;
366    mEasJetFileLoc->path = NULL;
367
368    EAS_RESULT result = JET_OpenFile(mEasData, mEasJetFileLoc);
369    if(result != EAS_SUCCESS)
370        mState = EAS_STATE_ERROR;
371    else
372        mState = EAS_STATE_OPEN;
373    return( result );
374}
375
376
377//-------------------------------------------------------------------------------------------------
378int JetPlayer::closeFile()
379{
380    Mutex::Autolock lock(mMutex);
381    return JET_CloseFile(mEasData);
382}
383
384
385//-------------------------------------------------------------------------------------------------
386int JetPlayer::play()
387{
388    LOGV("JetPlayer::play(): entering");
389    Mutex::Autolock lock(mMutex);
390
391    EAS_RESULT result = JET_Play(mEasData);
392
393    mPaused = false;
394    mRender = true;
395
396    JET_Status(mEasData, &mJetStatus);
397    this->dumpJetStatus(&mJetStatus);
398
399    fireUpdateOnStatusChange();
400
401    // wake up render thread
402    LOGV("JetPlayer::play(): wakeup render thread");
403    mCondition.signal();
404
405    return result;
406}
407
408//-------------------------------------------------------------------------------------------------
409int JetPlayer::pause()
410{
411    Mutex::Autolock lock(mMutex);
412    mPaused = true;
413    EAS_RESULT result = JET_Pause(mEasData);
414
415    mRender = false;
416
417    JET_Status(mEasData, &mJetStatus);
418    this->dumpJetStatus(&mJetStatus);
419    fireUpdateOnStatusChange();
420
421
422    return result;
423}
424
425
426//-------------------------------------------------------------------------------------------------
427int JetPlayer::queueSegment(int segmentNum, int libNum, int repeatCount, int transpose,
428        EAS_U32 muteFlags, EAS_U8 userID)
429{
430    LOGV("JetPlayer::queueSegment segmentNum=%d, libNum=%d, repeatCount=%d, transpose=%d",
431        segmentNum, libNum, repeatCount, transpose);
432    Mutex::Autolock lock(mMutex);
433    return JET_QueueSegment(mEasData, segmentNum, libNum, repeatCount, transpose, muteFlags, userID);
434}
435
436//-------------------------------------------------------------------------------------------------
437int JetPlayer::setMuteFlags(EAS_U32 muteFlags, bool sync)
438{
439    Mutex::Autolock lock(mMutex);
440    return JET_SetMuteFlags(mEasData, muteFlags, sync);
441}
442
443//-------------------------------------------------------------------------------------------------
444int JetPlayer::setMuteFlag(int trackNum, bool muteFlag, bool sync)
445{
446    Mutex::Autolock lock(mMutex);
447    return JET_SetMuteFlag(mEasData, trackNum, muteFlag, sync);
448}
449
450//-------------------------------------------------------------------------------------------------
451int JetPlayer::triggerClip(int clipId)
452{
453    LOGV("JetPlayer::triggerClip clipId=%d", clipId);
454    Mutex::Autolock lock(mMutex);
455    return JET_TriggerClip(mEasData, clipId);
456}
457
458//-------------------------------------------------------------------------------------------------
459int JetPlayer::clearQueue()
460{
461    LOGV("JetPlayer::clearQueue");
462    Mutex::Autolock lock(mMutex);
463    return JET_Clear_Queue(mEasData);
464}
465
466//-------------------------------------------------------------------------------------------------
467void JetPlayer::dump()
468{
469    LOGE("JetPlayer dump: JET file=%s", mEasJetFileLoc->path);
470}
471
472void JetPlayer::dumpJetStatus(S_JET_STATUS* pJetStatus)
473{
474    if(pJetStatus!=NULL)
475        LOGV(">> current JET player status: userID=%d segmentRepeatCount=%d numQueuedSegments=%d paused=%d",
476                pJetStatus->currentUserID, pJetStatus->segmentRepeatCount,
477                pJetStatus->numQueuedSegments, pJetStatus->paused);
478    else
479        LOGE(">> JET player status is NULL");
480}
481
482
483} // end namespace android
484
485