JetPlayer.cpp revision 17a736c3e1d062d7fc916329eb32aef8935614af 
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
26namespace android
27{
28
29static const int MIX_NUM_BUFFERS = 4;
30static const S_EAS_LIB_CONFIG* pLibConfig = NULL;
31
32//-------------------------------------------------------------------------------------------------
33JetPlayer::JetPlayer(jobject javaJetPlayer, int maxTracks, int trackBufferSize) :
34        mEventCallback(NULL),
35        mJavaJetPlayerRef(javaJetPlayer),
36        mTid(-1),
37        mRender(false),
38        mPaused(false),
39        mMaxTracks(maxTracks),
40        mEasData(NULL),
41        mEasJetFileLoc(NULL),
42        mAudioTrack(NULL),
43        mTrackBufferSize(trackBufferSize)
44{
45    ALOGV("JetPlayer constructor");
46    mPreviousJetStatus.currentUserID = -1;
47    mPreviousJetStatus.segmentRepeatCount = -1;
48    mPreviousJetStatus.numQueuedSegments = -1;
49    mPreviousJetStatus.paused = true;
50}
51
52//-------------------------------------------------------------------------------------------------
53JetPlayer::~JetPlayer()
54{
55    ALOGV("~JetPlayer");
56    release();
57
58}
59
60//-------------------------------------------------------------------------------------------------
61int JetPlayer::init()
62{
63    //Mutex::Autolock lock(&mMutex);
64
65    EAS_RESULT result;
66
67    // retrieve the EAS library settings
68    if (pLibConfig == NULL)
69        pLibConfig = EAS_Config();
70    if (pLibConfig == NULL) {
71        ALOGE("JetPlayer::init(): EAS library configuration could not be retrieved, aborting.");
72        return EAS_FAILURE;
73    }
74
75    // init the EAS library
76    result = EAS_Init(&mEasData);
77    if (result != EAS_SUCCESS) {
78        ALOGE("JetPlayer::init(): Error initializing Sonivox EAS library, aborting.");
79        mState = EAS_STATE_ERROR;
80        return result;
81    }
82    // init the JET library with the default app event controller range
83    result = JET_Init(mEasData, NULL, sizeof(S_JET_CONFIG));
84    if (result != EAS_SUCCESS) {
85        ALOGE("JetPlayer::init(): Error initializing JET library, aborting.");
86        mState = EAS_STATE_ERROR;
87        return result;
88    }
89
90    // create the output AudioTrack
91    mAudioTrack = new AudioTrack();
92    mAudioTrack->set(AUDIO_STREAM_MUSIC,  //TODO parameterize this
93            pLibConfig->sampleRate,
94            AUDIO_FORMAT_PCM_16_BIT,
95            audio_channel_out_mask_from_count(pLibConfig->numChannels),
96            mTrackBufferSize,
97            AUDIO_POLICY_OUTPUT_FLAG_NONE);
98
99    // create render and playback thread
100    {
101        Mutex::Autolock l(mMutex);
102        ALOGV("JetPlayer::init(): trying to start render thread");
103        mThread = new JetPlayerThread(this);
104        mThread->run("jetRenderThread", ANDROID_PRIORITY_AUDIO);
105        mCondition.wait(mMutex);
106    }
107    if (mTid > 0) {
108        // render thread started, we're ready
109        ALOGV("JetPlayer::init(): render thread(%d) successfully started.", mTid);
110        mState = EAS_STATE_READY;
111    } else {
112        ALOGE("JetPlayer::init(): failed to start render thread.");
113        mState = EAS_STATE_ERROR;
114        return EAS_FAILURE;
115    }
116
117    return EAS_SUCCESS;
118}
119
120void JetPlayer::setEventCallback(jetevent_callback eventCallback)
121{
122    Mutex::Autolock l(mMutex);
123    mEventCallback = eventCallback;
124}
125
126//-------------------------------------------------------------------------------------------------
127int JetPlayer::release()
128{
129    ALOGV("JetPlayer::release()");
130    Mutex::Autolock lock(mMutex);
131    mPaused = true;
132    mRender = false;
133    if (mEasData) {
134        JET_Pause(mEasData);
135        JET_CloseFile(mEasData);
136        JET_Shutdown(mEasData);
137        EAS_Shutdown(mEasData);
138    }
139    if (mEasJetFileLoc) {
140        free(mEasJetFileLoc);
141        mEasJetFileLoc = NULL;
142    }
143    if (mAudioTrack) {
144        mAudioTrack->stop();
145        mAudioTrack->flush();
146        delete mAudioTrack;
147        mAudioTrack = NULL;
148    }
149    if (mAudioBuffer) {
150        delete mAudioBuffer;
151        mAudioBuffer = NULL;
152    }
153    mEasData = NULL;
154
155    return EAS_SUCCESS;
156}
157
158
159//-------------------------------------------------------------------------------------------------
160int JetPlayer::render() {
161    EAS_RESULT result = EAS_FAILURE;
162    EAS_I32 count;
163    int temp;
164    bool audioStarted = false;
165
166    ALOGV("JetPlayer::render(): entering");
167
168    // allocate render buffer
169    mAudioBuffer =
170        new EAS_PCM[pLibConfig->mixBufferSize * pLibConfig->numChannels * MIX_NUM_BUFFERS];
171
172    // signal main thread that we started
173    {
174        Mutex::Autolock l(mMutex);
175        mTid = gettid();
176        ALOGV("JetPlayer::render(): render thread(%d) signal", mTid);
177        mCondition.signal();
178    }
179
180    while (1) {
181
182        mMutex.lock(); // [[[[[[[[ LOCK ---------------------------------------
183
184        if (mEasData == NULL) {
185            mMutex.unlock();
186            ALOGV("JetPlayer::render(): NULL EAS data, exiting render.");
187            goto threadExit;
188        }
189
190        // nothing to render, wait for client thread to wake us up
191        while (!mRender)
192        {
193            ALOGV("JetPlayer::render(): signal wait");
194            if (audioStarted) {
195                mAudioTrack->pause();
196                // we have to restart the playback once we start rendering again
197                audioStarted = false;
198            }
199            mCondition.wait(mMutex);
200            ALOGV("JetPlayer::render(): signal rx'd");
201        }
202
203        // render midi data into the input buffer
204        int num_output = 0;
205        EAS_PCM* p = mAudioBuffer;
206        for (int i = 0; i < MIX_NUM_BUFFERS; i++) {
207            result = EAS_Render(mEasData, p, pLibConfig->mixBufferSize, &count);
208            if (result != EAS_SUCCESS) {
209                ALOGE("JetPlayer::render(): EAS_Render returned error %ld", result);
210            }
211            p += count * pLibConfig->numChannels;
212            num_output += count * pLibConfig->numChannels * sizeof(EAS_PCM);
213
214            // send events that were generated (if any) to the event callback
215            fireEventsFromJetQueue();
216        }
217
218        // update playback state
219        //ALOGV("JetPlayer::render(): updating state");
220        JET_Status(mEasData, &mJetStatus);
221        fireUpdateOnStatusChange();
222        mPaused = mJetStatus.paused;
223
224        mMutex.unlock(); // UNLOCK ]]]]]]]] -----------------------------------
225
226        // check audio output track
227        if (mAudioTrack == NULL) {
228            ALOGE("JetPlayer::render(): output AudioTrack was not created");
229            goto threadExit;
230        }
231
232        // Write data to the audio hardware
233        //ALOGV("JetPlayer::render(): writing to audio output");
234        if ((temp = mAudioTrack->write(mAudioBuffer, num_output)) < 0) {
235            ALOGE("JetPlayer::render(): Error in writing:%d",temp);
236            return temp;
237        }
238
239        // start audio output if necessary
240        if (!audioStarted) {
241            ALOGV("JetPlayer::render(): starting audio playback");
242            mAudioTrack->start();
243            audioStarted = true;
244        }
245
246    }//while (1)
247
248threadExit:
249    if (mAudioTrack != NULL) {
250        mAudioTrack->stop();
251        mAudioTrack->flush();
252    }
253    delete [] mAudioBuffer;
254    mAudioBuffer = NULL;
255    mMutex.lock();
256    mTid = -1;
257    mCondition.signal();
258    mMutex.unlock();
259    return result;
260}
261
262
263//-------------------------------------------------------------------------------------------------
264// fire up an update if any of the status fields has changed
265// precondition: mMutex locked
266void JetPlayer::fireUpdateOnStatusChange()
267{
268    if ( (mJetStatus.currentUserID      != mPreviousJetStatus.currentUserID)
269       ||(mJetStatus.segmentRepeatCount != mPreviousJetStatus.segmentRepeatCount) ) {
270        if (mEventCallback)  {
271            mEventCallback(
272                JetPlayer::JET_USERID_UPDATE,
273                mJetStatus.currentUserID,
274                mJetStatus.segmentRepeatCount,
275                mJavaJetPlayerRef);
276        }
277        mPreviousJetStatus.currentUserID      = mJetStatus.currentUserID;
278        mPreviousJetStatus.segmentRepeatCount = mJetStatus.segmentRepeatCount;
279    }
280
281    if (mJetStatus.numQueuedSegments != mPreviousJetStatus.numQueuedSegments) {
282        if (mEventCallback)  {
283            mEventCallback(
284                JetPlayer::JET_NUMQUEUEDSEGMENT_UPDATE,
285                mJetStatus.numQueuedSegments,
286                -1,
287                mJavaJetPlayerRef);
288        }
289        mPreviousJetStatus.numQueuedSegments  = mJetStatus.numQueuedSegments;
290    }
291
292    if (mJetStatus.paused != mPreviousJetStatus.paused) {
293        if (mEventCallback)  {
294            mEventCallback(JetPlayer::JET_PAUSE_UPDATE,
295                mJetStatus.paused,
296                -1,
297                mJavaJetPlayerRef);
298        }
299        mPreviousJetStatus.paused = mJetStatus.paused;
300    }
301
302}
303
304
305//-------------------------------------------------------------------------------------------------
306// fire up all the JET events in the JET engine queue (until the queue is empty)
307// precondition: mMutex locked
308void JetPlayer::fireEventsFromJetQueue()
309{
310    if (!mEventCallback) {
311        // no callback, just empty the event queue
312        while (JET_GetEvent(mEasData, NULL, NULL)) { }
313        return;
314    }
315
316    EAS_U32 rawEvent;
317    while (JET_GetEvent(mEasData, &rawEvent, NULL)) {
318        mEventCallback(
319            JetPlayer::JET_EVENT,
320            rawEvent,
321            -1,
322            mJavaJetPlayerRef);
323    }
324}
325
326
327//-------------------------------------------------------------------------------------------------
328int JetPlayer::loadFromFile(const char* path)
329{
330    ALOGV("JetPlayer::loadFromFile(): path=%s", path);
331
332    Mutex::Autolock lock(mMutex);
333
334    mEasJetFileLoc = (EAS_FILE_LOCATOR) malloc(sizeof(EAS_FILE));
335    strncpy(mJetFilePath, path, sizeof(mJetFilePath));
336    mJetFilePath[sizeof(mJetFilePath) - 1] = '\0';
337    mEasJetFileLoc->path = mJetFilePath;
338
339    mEasJetFileLoc->fd = 0;
340    mEasJetFileLoc->length = 0;
341    mEasJetFileLoc->offset = 0;
342
343    EAS_RESULT result = JET_OpenFile(mEasData, mEasJetFileLoc);
344    if (result != EAS_SUCCESS)
345        mState = EAS_STATE_ERROR;
346    else
347        mState = EAS_STATE_OPEN;
348    return( result );
349}
350
351
352//-------------------------------------------------------------------------------------------------
353int JetPlayer::loadFromFD(const int fd, const long long offset, const long long length)
354{
355    ALOGV("JetPlayer::loadFromFD(): fd=%d offset=%lld length=%lld", fd, offset, length);
356
357    Mutex::Autolock lock(mMutex);
358
359    mEasJetFileLoc = (EAS_FILE_LOCATOR) malloc(sizeof(EAS_FILE));
360    mEasJetFileLoc->fd = fd;
361    mEasJetFileLoc->offset = offset;
362    mEasJetFileLoc->length = length;
363    mEasJetFileLoc->path = NULL;
364
365    EAS_RESULT result = JET_OpenFile(mEasData, mEasJetFileLoc);
366    if (result != EAS_SUCCESS)
367        mState = EAS_STATE_ERROR;
368    else
369        mState = EAS_STATE_OPEN;
370    return( result );
371}
372
373
374//-------------------------------------------------------------------------------------------------
375int JetPlayer::closeFile()
376{
377    Mutex::Autolock lock(mMutex);
378    return JET_CloseFile(mEasData);
379}
380
381
382//-------------------------------------------------------------------------------------------------
383int JetPlayer::play()
384{
385    ALOGV("JetPlayer::play(): entering");
386    Mutex::Autolock lock(mMutex);
387
388    EAS_RESULT result = JET_Play(mEasData);
389
390    mPaused = false;
391    mRender = true;
392
393    JET_Status(mEasData, &mJetStatus);
394    this->dumpJetStatus(&mJetStatus);
395
396    fireUpdateOnStatusChange();
397
398    // wake up render thread
399    ALOGV("JetPlayer::play(): wakeup render thread");
400    mCondition.signal();
401
402    return result;
403}
404
405//-------------------------------------------------------------------------------------------------
406int JetPlayer::pause()
407{
408    Mutex::Autolock lock(mMutex);
409    mPaused = true;
410    EAS_RESULT result = JET_Pause(mEasData);
411
412    mRender = false;
413
414    JET_Status(mEasData, &mJetStatus);
415    this->dumpJetStatus(&mJetStatus);
416    fireUpdateOnStatusChange();
417
418
419    return result;
420}
421
422
423//-------------------------------------------------------------------------------------------------
424int JetPlayer::queueSegment(int segmentNum, int libNum, int repeatCount, int transpose,
425        EAS_U32 muteFlags, EAS_U8 userID)
426{
427    ALOGV("JetPlayer::queueSegment segmentNum=%d, libNum=%d, repeatCount=%d, transpose=%d",
428        segmentNum, libNum, repeatCount, transpose);
429    Mutex::Autolock lock(mMutex);
430    return JET_QueueSegment(mEasData, segmentNum, libNum, repeatCount, transpose, muteFlags, userID);
431}
432
433//-------------------------------------------------------------------------------------------------
434int JetPlayer::setMuteFlags(EAS_U32 muteFlags, bool sync)
435{
436    Mutex::Autolock lock(mMutex);
437    return JET_SetMuteFlags(mEasData, muteFlags, sync);
438}
439
440//-------------------------------------------------------------------------------------------------
441int JetPlayer::setMuteFlag(int trackNum, bool muteFlag, bool sync)
442{
443    Mutex::Autolock lock(mMutex);
444    return JET_SetMuteFlag(mEasData, trackNum, muteFlag, sync);
445}
446
447//-------------------------------------------------------------------------------------------------
448int JetPlayer::triggerClip(int clipId)
449{
450    ALOGV("JetPlayer::triggerClip clipId=%d", clipId);
451    Mutex::Autolock lock(mMutex);
452    return JET_TriggerClip(mEasData, clipId);
453}
454
455//-------------------------------------------------------------------------------------------------
456int JetPlayer::clearQueue()
457{
458    ALOGV("JetPlayer::clearQueue");
459    Mutex::Autolock lock(mMutex);
460    return JET_Clear_Queue(mEasData);
461}
462
463//-------------------------------------------------------------------------------------------------
464void JetPlayer::dump()
465{
466    ALOGE("JetPlayer dump: JET file=%s", mEasJetFileLoc->path);
467}
468
469void JetPlayer::dumpJetStatus(S_JET_STATUS* pJetStatus)
470{
471    if (pJetStatus!=NULL)
472        ALOGV(">> current JET player status: userID=%d segmentRepeatCount=%d numQueuedSegments=%d paused=%d",
473                pJetStatus->currentUserID, pJetStatus->segmentRepeatCount,
474                pJetStatus->numQueuedSegments, pJetStatus->paused);
475    else
476        ALOGE(">> JET player status is NULL");
477}
478
479
480} // end namespace android
481