android_GenericPlayer.cpp revision 4ee246c55533bdab8ab5fa0f0581744fe58e7c91 
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(1),
35        mDurationMsec(ANDROID_UNKNOWN_TIME),
36        mPositionMsec(ANDROID_UNKNOWN_TIME),
37        mCacheStatus(kStatusEmpty),
38        mCacheFill(0),
39        mLastNotifiedCacheFill(0),
40        mCacheFillNotifThreshold(100)
41{
42    SL_LOGD("GenericPlayer::GenericPlayer()");
43
44    mLooper = new android::ALooper();
45
46    mAndroidAudioLevels.mMute = false;
47    mAndroidAudioLevels.mFinalVolume[0] = 1.0f;
48    mAndroidAudioLevels.mFinalVolume[1] = 1.0f;
49}
50
51
52GenericPlayer::~GenericPlayer() {
53    SL_LOGI("GenericPlayer::~GenericPlayer()");
54
55    mLooper->stop();
56    mLooper->unregisterHandler(id());
57    mLooper.clear();
58
59}
60
61
62void GenericPlayer::init(const notif_cbf_t cbf, void* notifUser) {
63    SL_LOGD("GenericPlayer::init()");
64
65    mNotifyClient = cbf;
66    mNotifyUser = notifUser;
67
68    mLooper->registerHandler(this);
69    mLooper->start(false /*runOnCallingThread*/, false /*canCallJava*/, mLooperPriority);
70}
71
72
73void GenericPlayer::setDataSource(const char *uri) {
74    resetDataLocator();
75
76    mDataLocator.uriRef = uri;
77
78    mDataLocatorType = kDataLocatorUri;
79}
80
81
82void GenericPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
83    resetDataLocator();
84
85    mDataLocator.fdi.fd = fd;
86
87    struct stat sb;
88    int ret = fstat(fd, &sb);
89    if (ret != 0) {
90        SL_LOGE("GenericPlayer::setDataSource: fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
91        return;
92    }
93
94    if (offset >= sb.st_size) {
95        SL_LOGE("SfPlayer::setDataSource: invalid offset");
96        return;
97    }
98    mDataLocator.fdi.offset = offset;
99
100    if (PLAYER_FD_FIND_FILE_SIZE == length) {
101        mDataLocator.fdi.length = sb.st_size;
102    } else if (offset + length > sb.st_size) {
103        mDataLocator.fdi.length = sb.st_size - offset;
104    } else {
105        mDataLocator.fdi.length = length;
106    }
107
108    mDataLocatorType = kDataLocatorFd;
109}
110
111
112void GenericPlayer::prepare() {
113    SL_LOGD("GenericPlayer::prepare()");
114    sp<AMessage> msg = new AMessage(kWhatPrepare, id());
115    msg->post();
116}
117
118
119void GenericPlayer::play() {
120    SL_LOGD("GenericPlayer::play()");
121    sp<AMessage> msg = new AMessage(kWhatPlay, id());
122    msg->post();
123}
124
125
126void GenericPlayer::pause() {
127    SL_LOGD("GenericPlayer::pause()");
128    sp<AMessage> msg = new AMessage(kWhatPause, id());
129    msg->post();
130}
131
132
133void GenericPlayer::stop() {
134    SL_LOGD("GenericPlayer::stop()");
135    (new AMessage(kWhatPause, id()))->post();
136
137    // after a stop, playback should resume from the start.
138    seek(0);
139}
140
141
142void GenericPlayer::seek(int64_t timeMsec) {
143    SL_LOGV("GenericPlayer::seek %lld", timeMsec);
144    sp<AMessage> msg = new AMessage(kWhatSeek, id());
145    msg->setInt64(WHATPARAM_SEEK_SEEKTIME_MS, timeMsec);
146    msg->post();
147}
148
149
150void GenericPlayer::loop(bool loop) {
151    sp<AMessage> msg = new AMessage(kWhatLoop, id());
152    msg->setInt32(WHATPARAM_LOOP_LOOPING, (int32_t)loop);
153    msg->post();
154}
155
156
157void GenericPlayer::setBufferingUpdateThreshold(int16_t thresholdPercent) {
158    sp<AMessage> msg = new AMessage(kWhatBuffUpdateThres, id());
159    msg->setInt32(WHATPARAM_BUFFERING_UPDATETHRESHOLD_PERCENT, (int32_t)thresholdPercent);
160    msg->post();
161}
162
163
164//--------------------------------------------------
165void GenericPlayer::getDurationMsec(int* msec) {
166    *msec = mDurationMsec;
167}
168
169void GenericPlayer::getPositionMsec(int* msec) {
170    *msec = mPositionMsec;
171}
172
173//--------------------------------------------------
174void GenericPlayer::setVolume(bool mute, bool useStereoPos,
175        XApermille stereoPos, XAmillibel volume) {
176
177    // compute amplification as the combination of volume level and stereo position
178    float leftVol = 1.0f, rightVol = 1.0f;
179    //   amplification from volume level
180    leftVol  *= sles_to_android_amplification(volume);
181    rightVol = leftVol;
182
183    //   amplification from direct level (changed in SLEffectSendtItf and SLAndroidEffectSendItf)
184    // FIXME use calculation below when supporting effects
185    //leftVol  *= mAndroidAudioLevels.mAmplFromDirectLevel;
186    //rightVol *= mAndroidAudioLevels.mAmplFromDirectLevel;
187
188    // amplification from stereo position
189    if (useStereoPos) {
190        // panning law depends on number of channels of content: stereo panning vs 2ch. balance
191        if (1 == mChannelCount) {
192            // stereo panning
193            double theta = (1000 + stereoPos) * M_PI_4 / 1000.0f; // 0 <= theta <= Pi/2
194            leftVol  *= cos(theta);
195            rightVol *= sin(theta);
196        } else {
197            // stereo balance
198            if (stereoPos > 0) {
199                leftVol  *= (1000 - stereoPos) / 1000.0f;
200                rightVol *= 1.0f;
201            } else {
202                leftVol  *= 1.0f;
203                rightVol *= (1000 + stereoPos) / 1000.0f;
204            }
205        }
206    }
207
208    {
209        Mutex::Autolock _l(mSettingsLock);
210        mAndroidAudioLevels.mMute = mute;
211        mAndroidAudioLevels.mFinalVolume[0] = leftVol;
212        mAndroidAudioLevels.mFinalVolume[1] = rightVol;
213    }
214
215    // send a message for the volume to be updated by the object which implements the volume
216    (new AMessage(kWhatVolumeUpdate, id()))->post();
217}
218
219
220//--------------------------------------------------
221/*
222 * post-condition: mDataLocatorType == kDataLocatorNone
223 *
224 */
225void GenericPlayer::resetDataLocator() {
226    mDataLocatorType = kDataLocatorNone;
227}
228
229
230void GenericPlayer::notify(const char* event, int data, bool async) {
231    sp<AMessage> msg = new AMessage(kWhatNotif, id());
232    msg->setInt32(event, (int32_t)data);
233    if (async) {
234        msg->post();
235    } else {
236        this->onNotify(msg);
237    }
238}
239
240
241void GenericPlayer::notify(const char* event, int data1, int data2, bool async) {
242    sp<AMessage> msg = new AMessage(kWhatNotif, id());
243    msg->setRect(event, 0, 0, (int32_t)data1, (int32_t)data2);
244    if (async) {
245        msg->post();
246    } else {
247        this->onNotify(msg);
248    }
249}
250
251
252//--------------------------------------------------
253// AHandler implementation
254void GenericPlayer::onMessageReceived(const sp<AMessage> &msg) {
255    switch (msg->what()) {
256        case kWhatPrepare:
257            onPrepare();
258            break;
259
260        case kWhatNotif:
261            onNotify(msg);
262            break;
263
264        case kWhatPlay:
265            onPlay();
266            break;
267
268        case kWhatPause:
269            onPause();
270            break;
271
272        case kWhatSeek:
273            onSeek(msg);
274            break;
275
276        case kWhatLoop:
277            onLoop(msg);
278            break;
279
280        case kWhatVolumeUpdate:
281            onVolumeUpdate();
282            break;
283
284        case kWhatSeekComplete:
285            onSeekComplete();
286            break;
287
288        case kWhatBufferingUpdate:
289            onBufferingUpdate(msg);
290            break;
291
292        case kWhatBuffUpdateThres:
293            onSetBufferingUpdateThreshold(msg);
294            break;
295
296        default:
297            TRESPASS();
298    }
299}
300
301
302//--------------------------------------------------
303// Event handlers
304//  it is strictly verboten to call those methods outside of the event loop
305
306void GenericPlayer::onPrepare() {
307    SL_LOGD("GenericPlayer::onPrepare()");
308    if (!(mStateFlags & kFlagPrepared)) {
309        mStateFlags |= kFlagPrepared;
310        notify(PLAYEREVENT_PREPARED, PLAYER_SUCCESS, false /*async*/);
311    }
312    SL_LOGD("GenericPlayer::onPrepare() done, mStateFlags=0x%x", mStateFlags);
313}
314
315
316void GenericPlayer::onNotify(const sp<AMessage> &msg) {
317    if (NULL == mNotifyClient) {
318        return;
319    }
320
321    int32_t val1, val2;
322    if (msg->findInt32(PLAYEREVENT_PREFETCHSTATUSCHANGE, &val1)) {
323        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREFETCHSTATUSCHANGE, val1);
324        mNotifyClient(kEventPrefetchStatusChange, val1, 0, mNotifyUser);
325    } else if (msg->findInt32(PLAYEREVENT_PREFETCHFILLLEVELUPDATE, &val1)) {
326        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREFETCHFILLLEVELUPDATE, val1);
327        mNotifyClient(kEventPrefetchFillLevelUpdate, val1, 0, mNotifyUser);
328    } else if (msg->findInt32(PLAYEREVENT_ENDOFSTREAM, &val1)) {
329        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_ENDOFSTREAM, val1);
330        mNotifyClient(kEventEndOfStream, val1, 0, mNotifyUser);
331    } else if (msg->findInt32(PLAYEREVENT_PREPARED, &val1)) {
332        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREPARED, val1);
333        mNotifyClient(kEventPrepared, val1, 0, mNotifyUser);
334    } else if (msg->findRect(PLAYEREVENT_VIDEO_SIZE_UPDATE, &val1, &val2, &val1, &val2)) {
335        SL_LOGV("GenericPlayer notifying %s = %d, %d", PLAYEREVENT_VIDEO_SIZE_UPDATE, val1, val2);
336        mNotifyClient(kEventHasVideoSize, val1, val2, mNotifyUser);
337    }
338}
339
340
341void GenericPlayer::onPlay() {
342    SL_LOGD("GenericPlayer::onPlay()");
343    if ((mStateFlags & kFlagPrepared)) {
344        SL_LOGD("starting player");
345        mStateFlags |= kFlagPlaying;
346    } else {
347        SL_LOGV("NOT starting player mStateFlags=0x%x", mStateFlags);
348    }
349}
350
351
352void GenericPlayer::onPause() {
353    SL_LOGD("GenericPlayer::onPause()");
354    if ((mStateFlags & kFlagPrepared)) {
355        mStateFlags &= ~kFlagPlaying;
356    }
357}
358
359
360void GenericPlayer::onSeek(const sp<AMessage> &msg) {
361    SL_LOGV("GenericPlayer::onSeek");
362}
363
364
365void GenericPlayer::onLoop(const sp<AMessage> &msg) {
366    SL_LOGV("GenericPlayer::onLoop");
367}
368
369
370void GenericPlayer::onVolumeUpdate() {
371
372}
373
374
375void GenericPlayer::onSeekComplete() {
376    SL_LOGD("GenericPlayer::onSeekComplete()");
377    mStateFlags &= ~kFlagSeeking;
378}
379
380
381void GenericPlayer::onBufferingUpdate(const sp<AMessage> &msg) {
382
383}
384
385
386void GenericPlayer::onSetBufferingUpdateThreshold(const sp<AMessage> &msg) {
387    int32_t thresholdPercent = 0;
388    if (msg->findInt32(WHATPARAM_BUFFERING_UPDATETHRESHOLD_PERCENT, &thresholdPercent)) {
389        Mutex::Autolock _l(mSettingsLock);
390        mCacheFillNotifThreshold = (int16_t)thresholdPercent;
391    }
392}
393
394
395//-------------------------------------------------
396void GenericPlayer::notifyStatus() {
397    notify(PLAYEREVENT_PREFETCHSTATUSCHANGE, (int32_t)mCacheStatus, true /*async*/);
398}
399
400
401void GenericPlayer::notifyCacheFill() {
402    mLastNotifiedCacheFill = mCacheFill;
403    notify(PLAYEREVENT_PREFETCHFILLLEVELUPDATE, (int32_t)mLastNotifiedCacheFill, true/*async*/);
404}
405
406
407void GenericPlayer::seekComplete() {
408    sp<AMessage> msg = new AMessage(kWhatSeekComplete, id());
409    msg->post();
410}
411
412
413void GenericPlayer::bufferingUpdate(int16_t fillLevelPerMille) {
414    sp<AMessage> msg = new AMessage(kWhatBufferingUpdate, id());
415    msg->setInt32(WHATPARAM_BUFFERING_UPDATE, fillLevelPerMille);
416    msg->post();
417}
418
419} // namespace android
420