NuPlayer.cpp revision 22fc52f6f72f39e33c3970d0291de3569118aa5c 
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//#define LOG_NDEBUG 0
18#define LOG_TAG "NuPlayer"
19#include <utils/Log.h>
20
21#include "NuPlayer.h"
22
23#include "HTTPLiveSource.h"
24#include "NuPlayerDecoder.h"
25#include "NuPlayerDriver.h"
26#include "NuPlayerRenderer.h"
27#include "NuPlayerSource.h"
28#include "StreamingSource.h"
29
30#include "ATSParser.h"
31
32#include <media/stagefright/foundation/hexdump.h>
33#include <media/stagefright/foundation/ABuffer.h>
34#include <media/stagefright/foundation/ADebug.h>
35#include <media/stagefright/foundation/AMessage.h>
36#include <media/stagefright/ACodec.h>
37#include <media/stagefright/MediaErrors.h>
38#include <media/stagefright/MetaData.h>
39#include <surfaceflinger/Surface.h>
40
41namespace android {
42
43////////////////////////////////////////////////////////////////////////////////
44
45NuPlayer::NuPlayer()
46    : mAudioEOS(false),
47      mVideoEOS(false),
48      mScanSourcesPending(false),
49      mScanSourcesGeneration(0),
50      mFlushingAudio(NONE),
51      mFlushingVideo(NONE),
52      mResetInProgress(false),
53      mResetPostponed(false) {
54}
55
56NuPlayer::~NuPlayer() {
57}
58
59void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
60    mDriver = driver;
61}
62
63void NuPlayer::setDataSource(const sp<IStreamSource> &source) {
64    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
65
66    msg->setObject("source", new StreamingSource(source));
67    msg->post();
68}
69
70void NuPlayer::setDataSource(
71        const char *url, const KeyedVector<String8, String8> *headers) {
72    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
73
74    msg->setObject("source", new HTTPLiveSource(url));
75    msg->post();
76}
77
78void NuPlayer::setVideoSurface(const sp<Surface> &surface) {
79    sp<AMessage> msg = new AMessage(kWhatSetVideoSurface, id());
80    msg->setObject("surface", surface);
81    msg->post();
82}
83
84void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
85    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
86    msg->setObject("sink", sink);
87    msg->post();
88}
89
90void NuPlayer::start() {
91    (new AMessage(kWhatStart, id()))->post();
92}
93
94void NuPlayer::pause() {
95    // XXX to be implemented
96}
97
98void NuPlayer::resume() {
99    // XXX to be implemented
100}
101
102void NuPlayer::resetAsync() {
103    (new AMessage(kWhatReset, id()))->post();
104}
105
106void NuPlayer::seekToAsync(int64_t seekTimeUs) {
107    sp<AMessage> msg = new AMessage(kWhatSeek, id());
108    msg->setInt64("seekTimeUs", seekTimeUs);
109    msg->post();
110}
111
112// static
113bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
114    switch (state) {
115        case FLUSHING_DECODER:
116            if (needShutdown != NULL) {
117                *needShutdown = false;
118            }
119            return true;
120
121        case FLUSHING_DECODER_SHUTDOWN:
122            if (needShutdown != NULL) {
123                *needShutdown = true;
124            }
125            return true;
126
127        default:
128            return false;
129    }
130}
131
132void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
133    switch (msg->what()) {
134        case kWhatSetDataSource:
135        {
136            LOGV("kWhatSetDataSource");
137
138            CHECK(mSource == NULL);
139
140            sp<RefBase> obj;
141            CHECK(msg->findObject("source", &obj));
142
143            mSource = static_cast<Source *>(obj.get());
144            break;
145        }
146
147        case kWhatSetVideoSurface:
148        {
149            LOGV("kWhatSetVideoSurface");
150
151            sp<RefBase> obj;
152            CHECK(msg->findObject("surface", &obj));
153
154            mSurface = static_cast<Surface *>(obj.get());
155            break;
156        }
157
158        case kWhatSetAudioSink:
159        {
160            LOGV("kWhatSetAudioSink");
161
162            sp<RefBase> obj;
163            CHECK(msg->findObject("sink", &obj));
164
165            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
166            break;
167        }
168
169        case kWhatStart:
170        {
171            LOGV("kWhatStart");
172
173            mAudioEOS = false;
174            mVideoEOS = false;
175
176            mSource->start();
177
178            mRenderer = new Renderer(
179                    mAudioSink,
180                    new AMessage(kWhatRendererNotify, id()));
181
182            looper()->registerHandler(mRenderer);
183
184            postScanSources();
185            break;
186        }
187
188        case kWhatScanSources:
189        {
190            int32_t generation;
191            CHECK(msg->findInt32("generation", &generation));
192            if (generation != mScanSourcesGeneration) {
193                // Drop obsolete msg.
194                break;
195            }
196
197            mScanSourcesPending = false;
198
199            LOGV("scanning sources haveAudio=%d, haveVideo=%d",
200                 mAudioDecoder != NULL, mVideoDecoder != NULL);
201
202            instantiateDecoder(false, &mVideoDecoder);
203
204            if (mAudioSink != NULL) {
205                instantiateDecoder(true, &mAudioDecoder);
206            }
207
208            if (!mSource->feedMoreTSData()) {
209                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
210                    // We're not currently decoding anything (no audio or
211                    // video tracks found) and we just ran out of input data.
212                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
213                }
214                break;
215            }
216
217            if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
218                msg->post(100000ll);
219                mScanSourcesPending = true;
220            }
221            break;
222        }
223
224        case kWhatVideoNotify:
225        case kWhatAudioNotify:
226        {
227            bool audio = msg->what() == kWhatAudioNotify;
228
229            sp<AMessage> codecRequest;
230            CHECK(msg->findMessage("codec-request", &codecRequest));
231
232            int32_t what;
233            CHECK(codecRequest->findInt32("what", &what));
234
235            if (what == ACodec::kWhatFillThisBuffer) {
236                status_t err = feedDecoderInputData(
237                        audio, codecRequest);
238
239                if (err == -EWOULDBLOCK) {
240                    if (mSource->feedMoreTSData()) {
241                        msg->post();
242                    }
243                }
244            } else if (what == ACodec::kWhatEOS) {
245                mRenderer->queueEOS(audio, ERROR_END_OF_STREAM);
246            } else if (what == ACodec::kWhatFlushCompleted) {
247                bool needShutdown;
248
249                if (audio) {
250                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
251                    mFlushingAudio = FLUSHED;
252                } else {
253                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
254                    mFlushingVideo = FLUSHED;
255                }
256
257                LOGV("decoder %s flush completed", audio ? "audio" : "video");
258
259                if (needShutdown) {
260                    LOGV("initiating %s decoder shutdown",
261                         audio ? "audio" : "video");
262
263                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
264
265                    if (audio) {
266                        mFlushingAudio = SHUTTING_DOWN_DECODER;
267                    } else {
268                        mFlushingVideo = SHUTTING_DOWN_DECODER;
269                    }
270                }
271
272                finishFlushIfPossible();
273            } else if (what == ACodec::kWhatOutputFormatChanged) {
274                CHECK(audio);
275
276                int32_t numChannels;
277                CHECK(codecRequest->findInt32("channel-count", &numChannels));
278
279                int32_t sampleRate;
280                CHECK(codecRequest->findInt32("sample-rate", &sampleRate));
281
282                LOGV("Audio output format changed to %d Hz, %d channels",
283                     sampleRate, numChannels);
284
285                mAudioSink->close();
286                CHECK_EQ(mAudioSink->open(sampleRate, numChannels), (status_t)OK);
287                mAudioSink->start();
288
289                mRenderer->signalAudioSinkChanged();
290            } else if (what == ACodec::kWhatShutdownCompleted) {
291                LOGV("%s shutdown completed", audio ? "audio" : "video");
292                if (audio) {
293                    mAudioDecoder.clear();
294
295                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
296                    mFlushingAudio = SHUT_DOWN;
297                } else {
298                    mVideoDecoder.clear();
299
300                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
301                    mFlushingVideo = SHUT_DOWN;
302                }
303
304                finishFlushIfPossible();
305            } else {
306                CHECK_EQ((int)what, (int)ACodec::kWhatDrainThisBuffer);
307
308                renderBuffer(audio, codecRequest);
309            }
310
311            break;
312        }
313
314        case kWhatRendererNotify:
315        {
316            int32_t what;
317            CHECK(msg->findInt32("what", &what));
318
319            if (what == Renderer::kWhatEOS) {
320                int32_t audio;
321                CHECK(msg->findInt32("audio", &audio));
322
323                if (audio) {
324                    mAudioEOS = true;
325                } else {
326                    mVideoEOS = true;
327                }
328
329                LOGV("reached %s EOS", audio ? "audio" : "video");
330
331                if ((mAudioEOS || mAudioDecoder == NULL)
332                        && (mVideoEOS || mVideoDecoder == NULL)) {
333                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
334                }
335            } else if (what == Renderer::kWhatPosition) {
336                int64_t positionUs;
337                CHECK(msg->findInt64("positionUs", &positionUs));
338
339                if (mDriver != NULL) {
340                    sp<NuPlayerDriver> driver = mDriver.promote();
341                    if (driver != NULL) {
342                        driver->notifyPosition(positionUs);
343                    }
344                }
345            } else {
346                CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
347
348                int32_t audio;
349                CHECK(msg->findInt32("audio", &audio));
350
351                LOGV("renderer %s flush completed.", audio ? "audio" : "video");
352            }
353            break;
354        }
355
356        case kWhatMoreDataQueued:
357        {
358            break;
359        }
360
361        case kWhatReset:
362        {
363            LOGV("kWhatReset");
364
365            if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
366                // We're currently flushing, postpone the reset until that's
367                // completed.
368
369                LOGV("postponing reset");
370
371                mResetPostponed = true;
372                break;
373            }
374
375            if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
376                finishReset();
377                break;
378            }
379
380            if (mAudioDecoder != NULL) {
381                flushDecoder(true /* audio */, true /* needShutdown */);
382            }
383
384            if (mVideoDecoder != NULL) {
385                flushDecoder(false /* audio */, true /* needShutdown */);
386            }
387
388            mResetInProgress = true;
389            break;
390        }
391
392        case kWhatSeek:
393        {
394            int64_t seekTimeUs;
395            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
396
397            LOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
398                 seekTimeUs, seekTimeUs / 1E6);
399
400            mSource->seekTo(seekTimeUs);
401
402            if (mDriver != NULL) {
403                sp<NuPlayerDriver> driver = mDriver.promote();
404                if (driver != NULL) {
405                    driver->notifySeekComplete();
406                }
407            }
408
409            break;
410        }
411
412        default:
413            TRESPASS();
414            break;
415    }
416}
417
418void NuPlayer::finishFlushIfPossible() {
419    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
420        return;
421    }
422
423    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
424        return;
425    }
426
427    LOGV("both audio and video are flushed now.");
428
429    mRenderer->signalTimeDiscontinuity();
430
431    if (mAudioDecoder != NULL) {
432        mAudioDecoder->signalResume();
433    }
434
435    if (mVideoDecoder != NULL) {
436        mVideoDecoder->signalResume();
437    }
438
439    mFlushingAudio = NONE;
440    mFlushingVideo = NONE;
441
442    if (mResetInProgress) {
443        LOGV("reset completed");
444
445        mResetInProgress = false;
446        finishReset();
447    } else if (mResetPostponed) {
448        (new AMessage(kWhatReset, id()))->post();
449        mResetPostponed = false;
450    } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
451        postScanSources();
452    }
453}
454
455void NuPlayer::finishReset() {
456    CHECK(mAudioDecoder == NULL);
457    CHECK(mVideoDecoder == NULL);
458
459    mRenderer.clear();
460    mSource.clear();
461
462    if (mDriver != NULL) {
463        sp<NuPlayerDriver> driver = mDriver.promote();
464        if (driver != NULL) {
465            driver->notifyResetComplete();
466        }
467    }
468}
469
470void NuPlayer::postScanSources() {
471    if (mScanSourcesPending) {
472        return;
473    }
474
475    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
476    msg->setInt32("generation", mScanSourcesGeneration);
477    msg->post();
478
479    mScanSourcesPending = true;
480}
481
482status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
483    if (*decoder != NULL) {
484        return OK;
485    }
486
487    sp<MetaData> meta = mSource->getFormat(audio);
488
489    if (meta == NULL) {
490        return -EWOULDBLOCK;
491    }
492
493    sp<AMessage> notify =
494        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
495                     id());
496
497    *decoder = new Decoder(notify, audio ? NULL : mSurface);
498    looper()->registerHandler(*decoder);
499
500    (*decoder)->configure(meta);
501
502    int64_t durationUs;
503    if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
504        sp<NuPlayerDriver> driver = mDriver.promote();
505        if (driver != NULL) {
506            driver->notifyDuration(durationUs);
507        }
508    }
509
510    return OK;
511}
512
513status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
514    sp<AMessage> reply;
515    CHECK(msg->findMessage("reply", &reply));
516
517    if ((audio && IsFlushingState(mFlushingAudio))
518            || (!audio && IsFlushingState(mFlushingVideo))) {
519        reply->setInt32("err", INFO_DISCONTINUITY);
520        reply->post();
521        return OK;
522    }
523
524    sp<ABuffer> accessUnit;
525    status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
526
527    if (err == -EWOULDBLOCK) {
528        return err;
529    } else if (err != OK) {
530        if (err == INFO_DISCONTINUITY) {
531            int32_t type;
532            CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
533
534            bool formatChange =
535                type == ATSParser::DISCONTINUITY_FORMATCHANGE;
536
537            LOGV("%s discontinuity (formatChange=%d)",
538                 audio ? "audio" : "video", formatChange);
539
540            flushDecoder(audio, formatChange);
541        }
542
543        reply->setInt32("err", err);
544        reply->post();
545        return OK;
546    }
547
548    // LOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
549
550#if 0
551    int64_t mediaTimeUs;
552    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
553    LOGV("feeding %s input buffer at media time %.2f secs",
554         audio ? "audio" : "video",
555         mediaTimeUs / 1E6);
556#endif
557
558    reply->setObject("buffer", accessUnit);
559    reply->post();
560
561    return OK;
562}
563
564void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
565    // LOGV("renderBuffer %s", audio ? "audio" : "video");
566
567    sp<AMessage> reply;
568    CHECK(msg->findMessage("reply", &reply));
569
570    sp<RefBase> obj;
571    CHECK(msg->findObject("buffer", &obj));
572
573    sp<ABuffer> buffer = static_cast<ABuffer *>(obj.get());
574
575    mRenderer->queueBuffer(audio, buffer, reply);
576}
577
578void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
579    if (mDriver == NULL) {
580        return;
581    }
582
583    sp<NuPlayerDriver> driver = mDriver.promote();
584
585    if (driver == NULL) {
586        return;
587    }
588
589    driver->sendEvent(msg, ext1, ext2);
590}
591
592void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
593    // Make sure we don't continue to scan sources until we finish flushing.
594    ++mScanSourcesGeneration;
595    mScanSourcesPending = false;
596
597    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
598    mRenderer->flush(audio);
599
600    FlushStatus newStatus =
601        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
602
603    if (audio) {
604        CHECK(mFlushingAudio == NONE
605                || mFlushingAudio == AWAITING_DISCONTINUITY);
606
607        mFlushingAudio = newStatus;
608
609        if (mFlushingVideo == NONE) {
610            mFlushingVideo = (mVideoDecoder != NULL)
611                ? AWAITING_DISCONTINUITY
612                : FLUSHED;
613        }
614    } else {
615        CHECK(mFlushingVideo == NONE
616                || mFlushingVideo == AWAITING_DISCONTINUITY);
617
618        mFlushingVideo = newStatus;
619
620        if (mFlushingAudio == NONE) {
621            mFlushingAudio = (mAudioDecoder != NULL)
622                ? AWAITING_DISCONTINUITY
623                : FLUSHED;
624        }
625    }
626}
627
628}  // namespace android
629