android_GenericPlayer.cpp revision b2549c73290f1955f3a7731bf98446a45f295dfa 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define USE_LOG SLAndroidLogLevel_Verbose
18
19#include "sles_allinclusive.h"
20
21#include <media/stagefright/foundation/ADebug.h>
22#include <sys/stat.h>
23
24namespace android {
25
26//--------------------------------------------------------------------------------------------------
27GenericPlayer::GenericPlayer(const AudioPlayback_Parameters* params) :
28        mDataLocatorType(kDataLocatorNone),
29        mNotifyClient(NULL),
30        mNotifyUser(NULL),
31        mStateFlags(0),
32        mLooperPriority(PRIORITY_DEFAULT),
33        mPlaybackParams(*params),
34        mChannelCount(UNKNOWN_NUMCHANNELS),
35        mDurationMsec(ANDROID_UNKNOWN_TIME),
36        mPositionMsec(ANDROID_UNKNOWN_TIME),
37        mSampleRateHz(UNKNOWN_SAMPLERATE),
38        mCacheStatus(kStatusEmpty),
39        mCacheFill(0),
40        mLastNotifiedCacheFill(0),
41        mCacheFillNotifThreshold(100)
42{
43    SL_LOGD("GenericPlayer::GenericPlayer()");
44
45    mLooper = new android::ALooper();
46
47    mAndroidAudioLevels.mMute = false;
48    mAndroidAudioLevels.mFinalVolume[0] = 1.0f;
49    mAndroidAudioLevels.mFinalVolume[1] = 1.0f;
50}
51
52
53GenericPlayer::~GenericPlayer() {
54    SL_LOGV("GenericPlayer::~GenericPlayer()");
55
56}
57
58
59void GenericPlayer::init(const notif_cbf_t cbf, void* notifUser) {
60    SL_LOGD("GenericPlayer::init()");
61
62    {
63        android::Mutex::Autolock autoLock(mNotifyClientLock);
64        mNotifyClient = cbf;
65        mNotifyUser = notifUser;
66    }
67
68    mLooper->registerHandler(this);
69    mLooper->start(false /*runOnCallingThread*/, false /*canCallJava*/, mLooperPriority);
70}
71
72
73void GenericPlayer::preDestroy() {
74    SL_LOGD("GenericPlayer::preDestroy()");
75    {
76        android::Mutex::Autolock autoLock(mNotifyClientLock);
77        mNotifyClient = NULL;
78        mNotifyUser = NULL;
79    }
80
81    mLooper->stop();
82    mLooper->unregisterHandler(id());
83}
84
85
86void GenericPlayer::setDataSource(const char *uri) {
87    SL_LOGV("GenericPlayer::setDataSource(uri=%s)", uri);
88    resetDataLocator();
89
90    mDataLocator.uriRef = uri;
91
92    mDataLocatorType = kDataLocatorUri;
93}
94
95
96void GenericPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
97    SL_LOGV("GenericPlayer::setDataSource(fd=%d, offset=%lld, length=%lld)", fd, offset, length);
98    resetDataLocator();
99
100    mDataLocator.fdi.fd = fd;
101
102    struct stat sb;
103    int ret = fstat(fd, &sb);
104    if (ret != 0) {
105        SL_LOGE("GenericPlayer::setDataSource: fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
106        return;
107    }
108
109    if (offset >= sb.st_size) {
110        SL_LOGE("SfPlayer::setDataSource: invalid offset");
111        return;
112    }
113    mDataLocator.fdi.offset = offset;
114
115    if (PLAYER_FD_FIND_FILE_SIZE == length) {
116        mDataLocator.fdi.length = sb.st_size;
117    } else if (offset + length > sb.st_size) {
118        mDataLocator.fdi.length = sb.st_size - offset;
119    } else {
120        mDataLocator.fdi.length = length;
121    }
122
123    mDataLocatorType = kDataLocatorFd;
124}
125
126
127void GenericPlayer::prepare() {
128    SL_LOGD("GenericPlayer::prepare()");
129    sp<AMessage> msg = new AMessage(kWhatPrepare, id());
130    msg->post();
131}
132
133
134void GenericPlayer::play() {
135    SL_LOGD("GenericPlayer::play()");
136    sp<AMessage> msg = new AMessage(kWhatPlay, id());
137    msg->post();
138}
139
140
141void GenericPlayer::pause() {
142    SL_LOGD("GenericPlayer::pause()");
143    sp<AMessage> msg = new AMessage(kWhatPause, id());
144    msg->post();
145}
146
147
148void GenericPlayer::stop() {
149    SL_LOGD("GenericPlayer::stop()");
150    (new AMessage(kWhatPause, id()))->post();
151
152    // after a stop, playback should resume from the start.
153    seek(0);
154}
155
156
157void GenericPlayer::seek(int64_t timeMsec) {
158    SL_LOGV("GenericPlayer::seek %lld", timeMsec);
159    if (timeMsec < 0) {
160        SL_LOGE("GenericPlayer::seek error, can't seek to negative time %lldms", timeMsec);
161        return;
162    }
163    sp<AMessage> msg = new AMessage(kWhatSeek, id());
164    msg->setInt64(WHATPARAM_SEEK_SEEKTIME_MS, timeMsec);
165    msg->post();
166}
167
168
169void GenericPlayer::loop(bool loop) {
170    SL_LOGV("GenericPlayer::loop %s", loop ? "true" : "false");
171    sp<AMessage> msg = new AMessage(kWhatLoop, id());
172    msg->setInt32(WHATPARAM_LOOP_LOOPING, (int32_t)loop);
173    msg->post();
174}
175
176
177void GenericPlayer::setBufferingUpdateThreshold(int16_t thresholdPercent) {
178    SL_LOGV("GenericPlayer::setBufferingUpdateThreshold %d", thresholdPercent);
179    sp<AMessage> msg = new AMessage(kWhatBuffUpdateThres, id());
180    msg->setInt32(WHATPARAM_BUFFERING_UPDATETHRESHOLD_PERCENT, (int32_t)thresholdPercent);
181    msg->post();
182}
183
184
185//--------------------------------------------------
186void GenericPlayer::getDurationMsec(int* msec) {
187    *msec = mDurationMsec;
188}
189
190void GenericPlayer::getPositionMsec(int* msec) {
191    *msec = mPositionMsec;
192}
193
194void GenericPlayer::getSampleRate(uint* hz) {
195    *hz = mSampleRateHz;
196}
197
198//--------------------------------------------------
199void GenericPlayer::setVolume(bool mute, bool useStereoPos,
200        XApermille stereoPos, XAmillibel volume) {
201    SL_LOGV("GenericPlayer::setVolume mute=%s, useStereoPos=%s, stereoPos=%d, volume=%d",
202            mute ?  "true" : "false", useStereoPos ? "true" : "false", stereoPos, volume);
203
204    // compute amplification as the combination of volume level and stereo position
205    float leftVol = 1.0f, rightVol = 1.0f;
206    //   amplification from volume level
207    leftVol  *= sles_to_android_amplification(volume);
208    rightVol = leftVol;
209
210    //   amplification from direct level (changed in SLEffectSendtItf and SLAndroidEffectSendItf)
211    // FIXME use calculation below when supporting effects
212    //leftVol  *= mAndroidAudioLevels.mAmplFromDirectLevel;
213    //rightVol *= mAndroidAudioLevels.mAmplFromDirectLevel;
214
215    // amplification from stereo position
216    if (useStereoPos) {
217        // panning law depends on number of channels of content: stereo panning vs 2ch. balance
218        if (1 == mChannelCount) {
219            // stereo panning
220            double theta = (1000 + stereoPos) * M_PI_4 / 1000.0f; // 0 <= theta <= Pi/2
221            leftVol  *= cos(theta);
222            rightVol *= sin(theta);
223        } else {
224            // stereo balance
225            if (stereoPos > 0) {
226                leftVol  *= (1000 - stereoPos) / 1000.0f;
227                rightVol *= 1.0f;
228            } else {
229                leftVol  *= 1.0f;
230                rightVol *= (1000 + stereoPos) / 1000.0f;
231            }
232        }
233    }
234
235    {
236        Mutex::Autolock _l(mSettingsLock);
237        mAndroidAudioLevels.mMute = mute;
238        mAndroidAudioLevels.mFinalVolume[0] = leftVol;
239        mAndroidAudioLevels.mFinalVolume[1] = rightVol;
240    }
241
242    // send a message for the volume to be updated by the object which implements the volume
243    (new AMessage(kWhatVolumeUpdate, id()))->post();
244}
245
246
247//--------------------------------------------------
248/*
249 * post-condition: mDataLocatorType == kDataLocatorNone
250 *
251 */
252void GenericPlayer::resetDataLocator() {
253    SL_LOGV("GenericPlayer::resetDataLocator()");
254    mDataLocatorType = kDataLocatorNone;
255}
256
257
258void GenericPlayer::notify(const char* event, int data, bool async) {
259    SL_LOGV("GenericPlayer::notify(event=%s, data=%d, async=%s)", event, data,
260            async ? "true" : "false");
261    sp<AMessage> msg = new AMessage(kWhatNotif, id());
262    msg->setInt32(event, (int32_t)data);
263    if (async) {
264        msg->post();
265    } else {
266        this->onNotify(msg);
267    }
268}
269
270
271void GenericPlayer::notify(const char* event, int data1, int data2, bool async) {
272    SL_LOGV("GenericPlayer::notify(event=%s, data1=%d, data2=%d, async=%s)", event, data1, data2,
273            async ? "true" : "false");
274    sp<AMessage> msg = new AMessage(kWhatNotif, id());
275    msg->setRect(event, 0, 0, (int32_t)data1, (int32_t)data2);
276    if (async) {
277        msg->post();
278    } else {
279        this->onNotify(msg);
280    }
281}
282
283
284//--------------------------------------------------
285// AHandler implementation
286void GenericPlayer::onMessageReceived(const sp<AMessage> &msg) {
287    SL_LOGV("GenericPlayer::onMessageReceived()");
288    switch (msg->what()) {
289        case kWhatPrepare:
290            SL_LOGD("kWhatPrepare");
291            onPrepare();
292            break;
293
294        case kWhatNotif:
295            SL_LOGI("kWhatNotif");
296            onNotify(msg);
297            break;
298
299        case kWhatPlay:
300            SL_LOGV("kWhatPlay");
301            onPlay();
302            break;
303
304        case kWhatPause:
305            SL_LOGV("kWhatPause");
306            onPause();
307            break;
308
309        case kWhatSeek:
310            SL_LOGV("kWhatSeek");
311            onSeek(msg);
312            break;
313
314        case kWhatLoop:
315            SL_LOGV("kWhatLoop");
316            onLoop(msg);
317            break;
318
319        case kWhatVolumeUpdate:
320            SL_LOGV("kWhatVolumeUpdate");
321            onVolumeUpdate();
322            break;
323
324        case kWhatSeekComplete:
325            SL_LOGV("kWhatSeekComplete");
326            onSeekComplete();
327            break;
328
329        case kWhatBufferingUpdate:
330            SL_LOGV("kWhatBufferingUpdate");
331            onBufferingUpdate(msg);
332            break;
333
334        case kWhatBuffUpdateThres:
335            SL_LOGV("kWhatBuffUpdateThres");
336            onSetBufferingUpdateThreshold(msg);
337            break;
338
339        default:
340            SL_LOGV("kWhatPlay");
341            TRESPASS();
342    }
343}
344
345
346//--------------------------------------------------
347// Event handlers
348//  it is strictly verboten to call those methods outside of the event loop
349
350void GenericPlayer::onPrepare() {
351    SL_LOGD("GenericPlayer::onPrepare()");
352    if (!(mStateFlags & kFlagPrepared)) {
353        mStateFlags |= kFlagPrepared;
354        notify(PLAYEREVENT_PREPARED, PLAYER_SUCCESS, false /*async*/);
355    }
356    SL_LOGD("GenericPlayer::onPrepare() done, mStateFlags=0x%x", mStateFlags);
357}
358
359
360void GenericPlayer::onNotify(const sp<AMessage> &msg) {
361    SL_LOGV("GenericPlayer::onNotify()");
362    notif_cbf_t notifClient;
363    void*       notifUser;
364    {
365        android::Mutex::Autolock autoLock(mNotifyClientLock);
366        if (NULL == mNotifyClient) {
367            return;
368        } else {
369            notifClient = mNotifyClient;
370            notifUser   = mNotifyUser;
371        }
372    }
373
374    int32_t val1, val2;
375    if (msg->findInt32(PLAYEREVENT_PREFETCHSTATUSCHANGE, &val1)) {
376        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREFETCHSTATUSCHANGE, val1);
377        notifClient(kEventPrefetchStatusChange, val1, 0, notifUser);
378    } else if (msg->findInt32(PLAYEREVENT_PREFETCHFILLLEVELUPDATE, &val1)) {
379        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREFETCHFILLLEVELUPDATE, val1);
380        notifClient(kEventPrefetchFillLevelUpdate, val1, 0, notifUser);
381    } else if (msg->findInt32(PLAYEREVENT_ENDOFSTREAM, &val1)) {
382        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_ENDOFSTREAM, val1);
383        notifClient(kEventEndOfStream, val1, 0, notifUser);
384    } else if (msg->findInt32(PLAYEREVENT_PREPARED, &val1)) {
385        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREPARED, val1);
386        notifClient(kEventPrepared, val1, 0, notifUser);
387    } else if (msg->findRect(PLAYEREVENT_VIDEO_SIZE_UPDATE, &val1, &val2, &val1, &val2)) {
388        SL_LOGV("GenericPlayer notifying %s = %d, %d", PLAYEREVENT_VIDEO_SIZE_UPDATE, val1, val2);
389        notifClient(kEventHasVideoSize, val1, val2, notifUser);
390    } else {
391        SL_LOGV("GenericPlayer notifying unknown");
392    }
393}
394
395
396void GenericPlayer::onPlay() {
397    SL_LOGD("GenericPlayer::onPlay()");
398    if ((mStateFlags & kFlagPrepared)) {
399        SL_LOGD("starting player");
400        mStateFlags |= kFlagPlaying;
401    } else {
402        SL_LOGV("NOT starting player mStateFlags=0x%x", mStateFlags);
403    }
404}
405
406
407void GenericPlayer::onPause() {
408    SL_LOGD("GenericPlayer::onPause()");
409    if ((mStateFlags & kFlagPrepared)) {
410        mStateFlags &= ~kFlagPlaying;
411    }
412}
413
414
415void GenericPlayer::onSeek(const sp<AMessage> &msg) {
416    SL_LOGV("GenericPlayer::onSeek");
417}
418
419
420void GenericPlayer::onLoop(const sp<AMessage> &msg) {
421    SL_LOGV("GenericPlayer::onLoop");
422}
423
424
425void GenericPlayer::onVolumeUpdate() {
426    SL_LOGV("GenericPlayer::onVolumeUpdate");
427}
428
429
430void GenericPlayer::onSeekComplete() {
431    SL_LOGD("GenericPlayer::onSeekComplete()");
432    mStateFlags &= ~kFlagSeeking;
433}
434
435
436void GenericPlayer::onBufferingUpdate(const sp<AMessage> &msg) {
437    SL_LOGV("GenericPlayer::onBufferingUpdate");
438}
439
440
441void GenericPlayer::onSetBufferingUpdateThreshold(const sp<AMessage> &msg) {
442    SL_LOGV("GenericPlayer::onSetBufferingUpdateThreshold");
443    int32_t thresholdPercent = 0;
444    if (msg->findInt32(WHATPARAM_BUFFERING_UPDATETHRESHOLD_PERCENT, &thresholdPercent)) {
445        Mutex::Autolock _l(mSettingsLock);
446        mCacheFillNotifThreshold = (int16_t)thresholdPercent;
447    }
448}
449
450
451//-------------------------------------------------
452void GenericPlayer::notifyStatus() {
453    SL_LOGV("GenericPlayer::notifyStatus");
454    notify(PLAYEREVENT_PREFETCHSTATUSCHANGE, (int32_t)mCacheStatus, true /*async*/);
455}
456
457
458void GenericPlayer::notifyCacheFill() {
459    SL_LOGV("GenericPlayer::notifyCacheFill");
460    mLastNotifiedCacheFill = mCacheFill;
461    notify(PLAYEREVENT_PREFETCHFILLLEVELUPDATE, (int32_t)mLastNotifiedCacheFill, true/*async*/);
462}
463
464
465void GenericPlayer::seekComplete() {
466    SL_LOGV("GenericPlayer::seekComplete");
467    sp<AMessage> msg = new AMessage(kWhatSeekComplete, id());
468    msg->post();
469}
470
471
472void GenericPlayer::bufferingUpdate(int16_t fillLevelPerMille) {
473    SL_LOGV("GenericPlayer::bufferingUpdate");
474    sp<AMessage> msg = new AMessage(kWhatBufferingUpdate, id());
475    msg->setInt32(WHATPARAM_BUFFERING_UPDATE, fillLevelPerMille);
476    msg->post();
477}
478
479} // namespace android
480