NuPlayerDecoder.cpp revision 0a7989f5691f161fff97dd550eb602e44a6e6185 
1/*
2 * Copyright 2014 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 "NuPlayerDecoder"
19#include <utils/Log.h>
20#include <inttypes.h>
21
22#include "NuPlayerCCDecoder.h"
23#include "NuPlayerDecoder.h"
24#include "NuPlayerRenderer.h"
25#include "NuPlayerSource.h"
26
27#include <media/ICrypto.h>
28#include <media/stagefright/foundation/ABuffer.h>
29#include <media/stagefright/foundation/ADebug.h>
30#include <media/stagefright/foundation/AMessage.h>
31#include <media/stagefright/MediaBuffer.h>
32#include <media/stagefright/MediaCodec.h>
33#include <media/stagefright/MediaDefs.h>
34#include <media/stagefright/MediaErrors.h>
35
36#include <gui/Surface.h>
37
38#include "avc_utils.h"
39#include "ATSParser.h"
40
41namespace android {
42
43NuPlayer::Decoder::Decoder(
44        const sp<AMessage> &notify,
45        const sp<Source> &source,
46        const sp<Renderer> &renderer,
47        const sp<Surface> &surface,
48        const sp<CCDecoder> &ccDecoder)
49    : DecoderBase(notify),
50      mSurface(surface),
51      mSource(source),
52      mRenderer(renderer),
53      mCCDecoder(ccDecoder),
54      mSkipRenderingUntilMediaTimeUs(-1ll),
55      mNumFramesTotal(0ll),
56      mNumFramesDropped(0ll),
57      mIsAudio(true),
58      mIsVideoAVC(false),
59      mIsSecure(false),
60      mFormatChangePending(false),
61      mTimeChangePending(false),
62      mPaused(true),
63      mResumePending(false),
64      mComponentName("decoder") {
65    mCodecLooper = new ALooper;
66    mCodecLooper->setName("NPDecoder-CL");
67    mCodecLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
68}
69
70NuPlayer::Decoder::~Decoder() {
71    mCodec->release();
72    releaseAndResetMediaBuffers();
73}
74
75void NuPlayer::Decoder::getStats(
76        int64_t *numFramesTotal,
77        int64_t *numFramesDropped) const {
78    *numFramesTotal = mNumFramesTotal;
79    *numFramesDropped = mNumFramesDropped;
80}
81
82void NuPlayer::Decoder::onMessageReceived(const sp<AMessage> &msg) {
83    ALOGV("[%s] onMessage: %s", mComponentName.c_str(), msg->debugString().c_str());
84
85    switch (msg->what()) {
86        case kWhatCodecNotify:
87        {
88            int32_t cbID;
89            CHECK(msg->findInt32("callbackID", &cbID));
90
91            ALOGV("[%s] kWhatCodecNotify: cbID = %d, paused = %d",
92                    mIsAudio ? "audio" : "video", cbID, mPaused);
93
94            if (mPaused) {
95                break;
96            }
97
98            switch (cbID) {
99                case MediaCodec::CB_INPUT_AVAILABLE:
100                {
101                    int32_t index;
102                    CHECK(msg->findInt32("index", &index));
103
104                    handleAnInputBuffer(index);
105                    break;
106                }
107
108                case MediaCodec::CB_OUTPUT_AVAILABLE:
109                {
110                    int32_t index;
111                    size_t offset;
112                    size_t size;
113                    int64_t timeUs;
114                    int32_t flags;
115
116                    CHECK(msg->findInt32("index", &index));
117                    CHECK(msg->findSize("offset", &offset));
118                    CHECK(msg->findSize("size", &size));
119                    CHECK(msg->findInt64("timeUs", &timeUs));
120                    CHECK(msg->findInt32("flags", &flags));
121
122                    handleAnOutputBuffer(index, offset, size, timeUs, flags);
123                    break;
124                }
125
126                case MediaCodec::CB_OUTPUT_FORMAT_CHANGED:
127                {
128                    sp<AMessage> format;
129                    CHECK(msg->findMessage("format", &format));
130
131                    handleOutputFormatChange(format);
132                    break;
133                }
134
135                case MediaCodec::CB_ERROR:
136                {
137                    status_t err;
138                    CHECK(msg->findInt32("err", &err));
139                    ALOGE("Decoder (%s) reported error : 0x%x",
140                            mIsAudio ? "audio" : "video", err);
141
142                    handleError(err);
143                    break;
144                }
145
146                default:
147                {
148                    TRESPASS();
149                    break;
150                }
151            }
152
153            break;
154        }
155
156        case kWhatRenderBuffer:
157        {
158            if (!isStaleReply(msg)) {
159                onRenderBuffer(msg);
160            }
161            break;
162        }
163
164        default:
165            DecoderBase::onMessageReceived(msg);
166            break;
167    }
168}
169
170void NuPlayer::Decoder::onConfigure(const sp<AMessage> &format) {
171    CHECK(mCodec == NULL);
172
173    mFormatChangePending = false;
174    mTimeChangePending = false;
175
176    ++mBufferGeneration;
177
178    AString mime;
179    CHECK(format->findString("mime", &mime));
180
181    mIsAudio = !strncasecmp("audio/", mime.c_str(), 6);
182    mIsVideoAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime.c_str());
183
184    mComponentName = mime;
185    mComponentName.append(" decoder");
186    ALOGV("[%s] onConfigure (surface=%p)", mComponentName.c_str(), mSurface.get());
187
188    mCodec = MediaCodec::CreateByType(mCodecLooper, mime.c_str(), false /* encoder */);
189    int32_t secure = 0;
190    if (format->findInt32("secure", &secure) && secure != 0) {
191        if (mCodec != NULL) {
192            mCodec->getName(&mComponentName);
193            mComponentName.append(".secure");
194            mCodec->release();
195            ALOGI("[%s] creating", mComponentName.c_str());
196            mCodec = MediaCodec::CreateByComponentName(
197                    mCodecLooper, mComponentName.c_str());
198        }
199    }
200    if (mCodec == NULL) {
201        ALOGE("Failed to create %s%s decoder",
202                (secure ? "secure " : ""), mime.c_str());
203        handleError(UNKNOWN_ERROR);
204        return;
205    }
206    mIsSecure = secure;
207
208    mCodec->getName(&mComponentName);
209
210    status_t err;
211    if (mSurface != NULL) {
212        // disconnect from surface as MediaCodec will reconnect
213        err = native_window_api_disconnect(
214                mSurface.get(), NATIVE_WINDOW_API_MEDIA);
215        // We treat this as a warning, as this is a preparatory step.
216        // Codec will try to connect to the surface, which is where
217        // any error signaling will occur.
218        ALOGW_IF(err != OK, "failed to disconnect from surface: %d", err);
219    }
220    err = mCodec->configure(
221            format, mSurface, NULL /* crypto */, 0 /* flags */);
222    if (err != OK) {
223        ALOGE("Failed to configure %s decoder (err=%d)", mComponentName.c_str(), err);
224        mCodec->release();
225        mCodec.clear();
226        handleError(err);
227        return;
228    }
229    rememberCodecSpecificData(format);
230
231    // the following should work in configured state
232    CHECK_EQ((status_t)OK, mCodec->getOutputFormat(&mOutputFormat));
233    CHECK_EQ((status_t)OK, mCodec->getInputFormat(&mInputFormat));
234
235    sp<AMessage> reply = new AMessage(kWhatCodecNotify, this);
236    mCodec->setCallback(reply);
237
238    err = mCodec->start();
239    if (err != OK) {
240        ALOGE("Failed to start %s decoder (err=%d)", mComponentName.c_str(), err);
241        mCodec->release();
242        mCodec.clear();
243        handleError(err);
244        return;
245    }
246
247    releaseAndResetMediaBuffers();
248
249    mPaused = false;
250    mResumePending = false;
251}
252
253void NuPlayer::Decoder::onSetParameters(const sp<AMessage> &params) {
254    if (mCodec == NULL) {
255        ALOGW("onSetParameters called before codec is created.");
256        return;
257    }
258    mCodec->setParameters(params);
259}
260
261void NuPlayer::Decoder::onSetRenderer(const sp<Renderer> &renderer) {
262    bool hadNoRenderer = (mRenderer == NULL);
263    mRenderer = renderer;
264    if (hadNoRenderer && mRenderer != NULL) {
265        // this means that the widevine legacy source is ready
266        onRequestInputBuffers();
267    }
268}
269
270void NuPlayer::Decoder::onGetInputBuffers(
271        Vector<sp<ABuffer> > *dstBuffers) {
272    CHECK_EQ((status_t)OK, mCodec->getWidevineLegacyBuffers(dstBuffers));
273}
274
275void NuPlayer::Decoder::onResume(bool notifyComplete) {
276    mPaused = false;
277
278    if (notifyComplete) {
279        mResumePending = true;
280    }
281    mCodec->start();
282}
283
284void NuPlayer::Decoder::doFlush(bool notifyComplete) {
285    if (mCCDecoder != NULL) {
286        mCCDecoder->flush();
287    }
288
289    if (mRenderer != NULL) {
290        mRenderer->flush(mIsAudio, notifyComplete);
291        mRenderer->signalTimeDiscontinuity();
292    }
293
294    status_t err = OK;
295    if (mCodec != NULL) {
296        err = mCodec->flush();
297        mCSDsToSubmit = mCSDsForCurrentFormat; // copy operator
298        ++mBufferGeneration;
299    }
300
301    if (err != OK) {
302        ALOGE("failed to flush %s (err=%d)", mComponentName.c_str(), err);
303        handleError(err);
304        // finish with posting kWhatFlushCompleted.
305        // we attempt to release the buffers even if flush fails.
306    }
307    releaseAndResetMediaBuffers();
308    mPaused = true;
309}
310
311
312void NuPlayer::Decoder::onFlush() {
313    doFlush(true);
314
315    if (isDiscontinuityPending()) {
316        // This could happen if the client starts seeking/shutdown
317        // after we queued an EOS for discontinuities.
318        // We can consider discontinuity handled.
319        finishHandleDiscontinuity(false /* flushOnTimeChange */);
320    }
321
322    sp<AMessage> notify = mNotify->dup();
323    notify->setInt32("what", kWhatFlushCompleted);
324    notify->post();
325}
326
327void NuPlayer::Decoder::onShutdown(bool notifyComplete) {
328    status_t err = OK;
329
330    // if there is a pending resume request, notify complete now
331    notifyResumeCompleteIfNecessary();
332
333    if (mCodec != NULL) {
334        err = mCodec->release();
335        mCodec = NULL;
336        ++mBufferGeneration;
337
338        if (mSurface != NULL) {
339            // reconnect to surface as MediaCodec disconnected from it
340            status_t error =
341                    native_window_api_connect(mSurface.get(), NATIVE_WINDOW_API_MEDIA);
342            ALOGW_IF(error != NO_ERROR,
343                    "[%s] failed to connect to native window, error=%d",
344                    mComponentName.c_str(), error);
345        }
346        mComponentName = "decoder";
347    }
348
349    releaseAndResetMediaBuffers();
350
351    if (err != OK) {
352        ALOGE("failed to release %s (err=%d)", mComponentName.c_str(), err);
353        handleError(err);
354        // finish with posting kWhatShutdownCompleted.
355    }
356
357    if (notifyComplete) {
358        sp<AMessage> notify = mNotify->dup();
359        notify->setInt32("what", kWhatShutdownCompleted);
360        notify->post();
361        mPaused = true;
362    }
363}
364
365/*
366 * returns true if we should request more data
367 */
368bool NuPlayer::Decoder::doRequestBuffers() {
369    // mRenderer is only NULL if we have a legacy widevine source that
370    // is not yet ready. In this case we must not fetch input.
371    if (isDiscontinuityPending() || mRenderer == NULL) {
372        return false;
373    }
374    status_t err = OK;
375    while (err == OK && !mDequeuedInputBuffers.empty()) {
376        size_t bufferIx = *mDequeuedInputBuffers.begin();
377        sp<AMessage> msg = new AMessage();
378        msg->setSize("buffer-ix", bufferIx);
379        err = fetchInputData(msg);
380        if (err != OK && err != ERROR_END_OF_STREAM) {
381            // if EOS, need to queue EOS buffer
382            break;
383        }
384        mDequeuedInputBuffers.erase(mDequeuedInputBuffers.begin());
385
386        if (!mPendingInputMessages.empty()
387                || !onInputBufferFetched(msg)) {
388            mPendingInputMessages.push_back(msg);
389        }
390    }
391
392    return err == -EWOULDBLOCK
393            && mSource->feedMoreTSData() == OK;
394}
395
396void NuPlayer::Decoder::handleError(int32_t err)
397{
398    // We cannot immediately release the codec due to buffers still outstanding
399    // in the renderer.  We signal to the player the error so it can shutdown/release the
400    // decoder after flushing and increment the generation to discard unnecessary messages.
401
402    ++mBufferGeneration;
403
404    sp<AMessage> notify = mNotify->dup();
405    notify->setInt32("what", kWhatError);
406    notify->setInt32("err", err);
407    notify->post();
408}
409
410bool NuPlayer::Decoder::handleAnInputBuffer(size_t index) {
411    if (isDiscontinuityPending()) {
412        return false;
413    }
414
415    sp<ABuffer> buffer;
416    mCodec->getInputBuffer(index, &buffer);
417
418    if (buffer == NULL) {
419        handleError(UNKNOWN_ERROR);
420        return false;
421    }
422
423    if (index >= mInputBuffers.size()) {
424        for (size_t i = mInputBuffers.size(); i <= index; ++i) {
425            mInputBuffers.add();
426            mMediaBuffers.add();
427            mInputBufferIsDequeued.add();
428            mMediaBuffers.editItemAt(i) = NULL;
429            mInputBufferIsDequeued.editItemAt(i) = false;
430        }
431    }
432    mInputBuffers.editItemAt(index) = buffer;
433
434    //CHECK_LT(bufferIx, mInputBuffers.size());
435
436    if (mMediaBuffers[index] != NULL) {
437        mMediaBuffers[index]->release();
438        mMediaBuffers.editItemAt(index) = NULL;
439    }
440    mInputBufferIsDequeued.editItemAt(index) = true;
441
442    if (!mCSDsToSubmit.isEmpty()) {
443        sp<AMessage> msg = new AMessage();
444        msg->setSize("buffer-ix", index);
445
446        sp<ABuffer> buffer = mCSDsToSubmit.itemAt(0);
447        ALOGI("[%s] resubmitting CSD", mComponentName.c_str());
448        msg->setBuffer("buffer", buffer);
449        mCSDsToSubmit.removeAt(0);
450        CHECK(onInputBufferFetched(msg));
451        return true;
452    }
453
454    while (!mPendingInputMessages.empty()) {
455        sp<AMessage> msg = *mPendingInputMessages.begin();
456        if (!onInputBufferFetched(msg)) {
457            break;
458        }
459        mPendingInputMessages.erase(mPendingInputMessages.begin());
460    }
461
462    if (!mInputBufferIsDequeued.editItemAt(index)) {
463        return true;
464    }
465
466    mDequeuedInputBuffers.push_back(index);
467
468    onRequestInputBuffers();
469    return true;
470}
471
472bool NuPlayer::Decoder::handleAnOutputBuffer(
473        size_t index,
474        size_t offset,
475        size_t size,
476        int64_t timeUs,
477        int32_t flags) {
478//    CHECK_LT(bufferIx, mOutputBuffers.size());
479    sp<ABuffer> buffer;
480    mCodec->getOutputBuffer(index, &buffer);
481
482    if (index >= mOutputBuffers.size()) {
483        for (size_t i = mOutputBuffers.size(); i <= index; ++i) {
484            mOutputBuffers.add();
485        }
486    }
487
488    mOutputBuffers.editItemAt(index) = buffer;
489
490    buffer->setRange(offset, size);
491    buffer->meta()->clear();
492    buffer->meta()->setInt64("timeUs", timeUs);
493
494    bool eos = flags & MediaCodec::BUFFER_FLAG_EOS;
495    // we do not expect CODECCONFIG or SYNCFRAME for decoder
496
497    sp<AMessage> reply = new AMessage(kWhatRenderBuffer, this);
498    reply->setSize("buffer-ix", index);
499    reply->setInt32("generation", mBufferGeneration);
500
501    if (eos) {
502        ALOGI("[%s] saw output EOS", mIsAudio ? "audio" : "video");
503
504        buffer->meta()->setInt32("eos", true);
505        reply->setInt32("eos", true);
506    } else if (mSkipRenderingUntilMediaTimeUs >= 0) {
507        if (timeUs < mSkipRenderingUntilMediaTimeUs) {
508            ALOGV("[%s] dropping buffer at time %lld as requested.",
509                     mComponentName.c_str(), (long long)timeUs);
510
511            reply->post();
512            return true;
513        }
514
515        mSkipRenderingUntilMediaTimeUs = -1;
516    }
517
518    // wait until 1st frame comes out to signal resume complete
519    notifyResumeCompleteIfNecessary();
520
521    if (mRenderer != NULL) {
522        // send the buffer to renderer.
523        mRenderer->queueBuffer(mIsAudio, buffer, reply);
524        if (eos && !isDiscontinuityPending()) {
525            mRenderer->queueEOS(mIsAudio, ERROR_END_OF_STREAM);
526        }
527    }
528
529    return true;
530}
531
532void NuPlayer::Decoder::handleOutputFormatChange(const sp<AMessage> &format) {
533    if (!mIsAudio) {
534        sp<AMessage> notify = mNotify->dup();
535        notify->setInt32("what", kWhatVideoSizeChanged);
536        notify->setMessage("format", format);
537        notify->post();
538    } else if (mRenderer != NULL) {
539        uint32_t flags;
540        int64_t durationUs;
541        bool hasVideo = (mSource->getFormat(false /* audio */) != NULL);
542        if (!hasVideo &&
543                mSource->getDuration(&durationUs) == OK &&
544                durationUs > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
545            flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
546        } else {
547            flags = AUDIO_OUTPUT_FLAG_NONE;
548        }
549
550        mRenderer->openAudioSink(
551                format, false /* offloadOnly */, hasVideo, flags, NULL /* isOffloaed */);
552    }
553}
554
555void NuPlayer::Decoder::releaseAndResetMediaBuffers() {
556    for (size_t i = 0; i < mMediaBuffers.size(); i++) {
557        if (mMediaBuffers[i] != NULL) {
558            mMediaBuffers[i]->release();
559            mMediaBuffers.editItemAt(i) = NULL;
560        }
561    }
562    mMediaBuffers.resize(mInputBuffers.size());
563    for (size_t i = 0; i < mMediaBuffers.size(); i++) {
564        mMediaBuffers.editItemAt(i) = NULL;
565    }
566    mInputBufferIsDequeued.clear();
567    mInputBufferIsDequeued.resize(mInputBuffers.size());
568    for (size_t i = 0; i < mInputBufferIsDequeued.size(); i++) {
569        mInputBufferIsDequeued.editItemAt(i) = false;
570    }
571
572    mPendingInputMessages.clear();
573    mDequeuedInputBuffers.clear();
574    mSkipRenderingUntilMediaTimeUs = -1;
575}
576
577void NuPlayer::Decoder::requestCodecNotification() {
578    if (mCodec != NULL) {
579        sp<AMessage> reply = new AMessage(kWhatCodecNotify, this);
580        reply->setInt32("generation", mBufferGeneration);
581        mCodec->requestActivityNotification(reply);
582    }
583}
584
585bool NuPlayer::Decoder::isStaleReply(const sp<AMessage> &msg) {
586    int32_t generation;
587    CHECK(msg->findInt32("generation", &generation));
588    return generation != mBufferGeneration;
589}
590
591status_t NuPlayer::Decoder::fetchInputData(sp<AMessage> &reply) {
592    sp<ABuffer> accessUnit;
593    bool dropAccessUnit;
594    do {
595        status_t err = mSource->dequeueAccessUnit(mIsAudio, &accessUnit);
596
597        if (err == -EWOULDBLOCK) {
598            return err;
599        } else if (err != OK) {
600            if (err == INFO_DISCONTINUITY) {
601                int32_t type;
602                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
603
604                bool formatChange =
605                    (mIsAudio &&
606                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
607                    || (!mIsAudio &&
608                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
609
610                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
611
612                ALOGI("%s discontinuity (format=%d, time=%d)",
613                        mIsAudio ? "audio" : "video", formatChange, timeChange);
614
615                bool seamlessFormatChange = false;
616                sp<AMessage> newFormat = mSource->getFormat(mIsAudio);
617                if (formatChange) {
618                    seamlessFormatChange =
619                        supportsSeamlessFormatChange(newFormat);
620                    // treat seamless format change separately
621                    formatChange = !seamlessFormatChange;
622                }
623
624                // For format or time change, return EOS to queue EOS input,
625                // then wait for EOS on output.
626                if (formatChange /* not seamless */) {
627                    mFormatChangePending = true;
628                    err = ERROR_END_OF_STREAM;
629                } else if (timeChange) {
630                    rememberCodecSpecificData(newFormat);
631                    mTimeChangePending = true;
632                    err = ERROR_END_OF_STREAM;
633                } else if (seamlessFormatChange) {
634                    // reuse existing decoder and don't flush
635                    rememberCodecSpecificData(newFormat);
636                    continue;
637                } else {
638                    // This stream is unaffected by the discontinuity
639                    return -EWOULDBLOCK;
640                }
641            }
642
643            // reply should only be returned without a buffer set
644            // when there is an error (including EOS)
645            CHECK(err != OK);
646
647            reply->setInt32("err", err);
648            return ERROR_END_OF_STREAM;
649        }
650
651        if (!mIsAudio) {
652            ++mNumFramesTotal;
653        }
654
655        dropAccessUnit = false;
656        if (!mIsAudio
657                && !mIsSecure
658                && mRenderer->getVideoLateByUs() > 100000ll
659                && mIsVideoAVC
660                && !IsAVCReferenceFrame(accessUnit)) {
661            dropAccessUnit = true;
662            ++mNumFramesDropped;
663        }
664    } while (dropAccessUnit);
665
666    // ALOGV("returned a valid buffer of %s data", mIsAudio ? "mIsAudio" : "video");
667#if 0
668    int64_t mediaTimeUs;
669    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
670    ALOGV("[%s] feeding input buffer at media time %.3f",
671         mIsAudio ? "audio" : "video",
672         mediaTimeUs / 1E6);
673#endif
674
675    if (mCCDecoder != NULL) {
676        mCCDecoder->decode(accessUnit);
677    }
678
679    reply->setBuffer("buffer", accessUnit);
680
681    return OK;
682}
683
684bool NuPlayer::Decoder::onInputBufferFetched(const sp<AMessage> &msg) {
685    size_t bufferIx;
686    CHECK(msg->findSize("buffer-ix", &bufferIx));
687    CHECK_LT(bufferIx, mInputBuffers.size());
688    sp<ABuffer> codecBuffer = mInputBuffers[bufferIx];
689
690    sp<ABuffer> buffer;
691    bool hasBuffer = msg->findBuffer("buffer", &buffer);
692
693    // handle widevine classic source - that fills an arbitrary input buffer
694    MediaBuffer *mediaBuffer = NULL;
695    if (hasBuffer) {
696        mediaBuffer = (MediaBuffer *)(buffer->getMediaBufferBase());
697        if (mediaBuffer != NULL) {
698            // likely filled another buffer than we requested: adjust buffer index
699            size_t ix;
700            for (ix = 0; ix < mInputBuffers.size(); ix++) {
701                const sp<ABuffer> &buf = mInputBuffers[ix];
702                if (buf->data() == mediaBuffer->data()) {
703                    // all input buffers are dequeued on start, hence the check
704                    if (!mInputBufferIsDequeued[ix]) {
705                        ALOGV("[%s] received MediaBuffer for #%zu instead of #%zu",
706                                mComponentName.c_str(), ix, bufferIx);
707                        mediaBuffer->release();
708                        return false;
709                    }
710
711                    // TRICKY: need buffer for the metadata, so instead, set
712                    // codecBuffer to the same (though incorrect) buffer to
713                    // avoid a memcpy into the codecBuffer
714                    codecBuffer = buffer;
715                    codecBuffer->setRange(
716                            mediaBuffer->range_offset(),
717                            mediaBuffer->range_length());
718                    bufferIx = ix;
719                    break;
720                }
721            }
722            CHECK(ix < mInputBuffers.size());
723        }
724    }
725
726    if (buffer == NULL /* includes !hasBuffer */) {
727        int32_t streamErr = ERROR_END_OF_STREAM;
728        CHECK(msg->findInt32("err", &streamErr) || !hasBuffer);
729
730        CHECK(streamErr != OK);
731
732        // attempt to queue EOS
733        status_t err = mCodec->queueInputBuffer(
734                bufferIx,
735                0,
736                0,
737                0,
738                MediaCodec::BUFFER_FLAG_EOS);
739        if (err == OK) {
740            mInputBufferIsDequeued.editItemAt(bufferIx) = false;
741        } else if (streamErr == ERROR_END_OF_STREAM) {
742            streamErr = err;
743            // err will not be ERROR_END_OF_STREAM
744        }
745
746        if (streamErr != ERROR_END_OF_STREAM) {
747            ALOGE("Stream error for %s (err=%d), EOS %s queued",
748                    mComponentName.c_str(),
749                    streamErr,
750                    err == OK ? "successfully" : "unsuccessfully");
751            handleError(streamErr);
752        }
753    } else {
754        sp<AMessage> extra;
755        if (buffer->meta()->findMessage("extra", &extra) && extra != NULL) {
756            int64_t resumeAtMediaTimeUs;
757            if (extra->findInt64(
758                        "resume-at-mediaTimeUs", &resumeAtMediaTimeUs)) {
759                ALOGI("[%s] suppressing rendering until %lld us",
760                        mComponentName.c_str(), (long long)resumeAtMediaTimeUs);
761                mSkipRenderingUntilMediaTimeUs = resumeAtMediaTimeUs;
762            }
763        }
764
765        int64_t timeUs = 0;
766        uint32_t flags = 0;
767        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
768
769        int32_t eos, csd;
770        // we do not expect SYNCFRAME for decoder
771        if (buffer->meta()->findInt32("eos", &eos) && eos) {
772            flags |= MediaCodec::BUFFER_FLAG_EOS;
773        } else if (buffer->meta()->findInt32("csd", &csd) && csd) {
774            flags |= MediaCodec::BUFFER_FLAG_CODECCONFIG;
775        }
776
777        // copy into codec buffer
778        if (buffer != codecBuffer) {
779            CHECK_LE(buffer->size(), codecBuffer->capacity());
780            codecBuffer->setRange(0, buffer->size());
781            memcpy(codecBuffer->data(), buffer->data(), buffer->size());
782        }
783
784        status_t err = mCodec->queueInputBuffer(
785                        bufferIx,
786                        codecBuffer->offset(),
787                        codecBuffer->size(),
788                        timeUs,
789                        flags);
790        if (err != OK) {
791            if (mediaBuffer != NULL) {
792                mediaBuffer->release();
793            }
794            ALOGE("Failed to queue input buffer for %s (err=%d)",
795                    mComponentName.c_str(), err);
796            handleError(err);
797        } else {
798            mInputBufferIsDequeued.editItemAt(bufferIx) = false;
799            if (mediaBuffer != NULL) {
800                CHECK(mMediaBuffers[bufferIx] == NULL);
801                mMediaBuffers.editItemAt(bufferIx) = mediaBuffer;
802            }
803        }
804    }
805    return true;
806}
807
808void NuPlayer::Decoder::onRenderBuffer(const sp<AMessage> &msg) {
809    status_t err;
810    int32_t render;
811    size_t bufferIx;
812    int32_t eos;
813    CHECK(msg->findSize("buffer-ix", &bufferIx));
814
815    if (!mIsAudio) {
816        int64_t timeUs;
817        sp<ABuffer> buffer = mOutputBuffers[bufferIx];
818        buffer->meta()->findInt64("timeUs", &timeUs);
819
820        if (mCCDecoder != NULL && mCCDecoder->isSelected()) {
821            mCCDecoder->display(timeUs);
822        }
823    }
824
825    if (msg->findInt32("render", &render) && render) {
826        int64_t timestampNs;
827        CHECK(msg->findInt64("timestampNs", &timestampNs));
828        err = mCodec->renderOutputBufferAndRelease(bufferIx, timestampNs);
829    } else {
830        err = mCodec->releaseOutputBuffer(bufferIx);
831    }
832    if (err != OK) {
833        ALOGE("failed to release output buffer for %s (err=%d)",
834                mComponentName.c_str(), err);
835        handleError(err);
836    }
837    if (msg->findInt32("eos", &eos) && eos
838            && isDiscontinuityPending()) {
839        finishHandleDiscontinuity(true /* flushOnTimeChange */);
840    }
841}
842
843bool NuPlayer::Decoder::isDiscontinuityPending() const {
844    return mFormatChangePending || mTimeChangePending;
845}
846
847void NuPlayer::Decoder::finishHandleDiscontinuity(bool flushOnTimeChange) {
848    ALOGV("finishHandleDiscontinuity: format %d, time %d, flush %d",
849            mFormatChangePending, mTimeChangePending, flushOnTimeChange);
850
851    // If we have format change, pause and wait to be killed;
852    // If we have time change only, flush and restart fetching.
853
854    if (mFormatChangePending) {
855        mPaused = true;
856    } else if (mTimeChangePending) {
857        if (flushOnTimeChange) {
858            doFlush(false /* notifyComplete */);
859            signalResume(false /* notifyComplete */);
860        }
861    }
862
863    // Notify NuPlayer to either shutdown decoder, or rescan sources
864    sp<AMessage> msg = mNotify->dup();
865    msg->setInt32("what", kWhatInputDiscontinuity);
866    msg->setInt32("formatChange", mFormatChangePending);
867    msg->post();
868
869    mFormatChangePending = false;
870    mTimeChangePending = false;
871}
872
873bool NuPlayer::Decoder::supportsSeamlessAudioFormatChange(
874        const sp<AMessage> &targetFormat) const {
875    if (targetFormat == NULL) {
876        return true;
877    }
878
879    AString mime;
880    if (!targetFormat->findString("mime", &mime)) {
881        return false;
882    }
883
884    if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_AUDIO_AAC)) {
885        // field-by-field comparison
886        const char * keys[] = { "channel-count", "sample-rate", "is-adts" };
887        for (unsigned int i = 0; i < sizeof(keys) / sizeof(keys[0]); i++) {
888            int32_t oldVal, newVal;
889            if (!mInputFormat->findInt32(keys[i], &oldVal) ||
890                    !targetFormat->findInt32(keys[i], &newVal) ||
891                    oldVal != newVal) {
892                return false;
893            }
894        }
895
896        sp<ABuffer> oldBuf, newBuf;
897        if (mInputFormat->findBuffer("csd-0", &oldBuf) &&
898                targetFormat->findBuffer("csd-0", &newBuf)) {
899            if (oldBuf->size() != newBuf->size()) {
900                return false;
901            }
902            return !memcmp(oldBuf->data(), newBuf->data(), oldBuf->size());
903        }
904    }
905    return false;
906}
907
908bool NuPlayer::Decoder::supportsSeamlessFormatChange(const sp<AMessage> &targetFormat) const {
909    if (mInputFormat == NULL) {
910        return false;
911    }
912
913    if (targetFormat == NULL) {
914        return true;
915    }
916
917    AString oldMime, newMime;
918    if (!mInputFormat->findString("mime", &oldMime)
919            || !targetFormat->findString("mime", &newMime)
920            || !(oldMime == newMime)) {
921        return false;
922    }
923
924    bool audio = !strncasecmp(oldMime.c_str(), "audio/", strlen("audio/"));
925    bool seamless;
926    if (audio) {
927        seamless = supportsSeamlessAudioFormatChange(targetFormat);
928    } else {
929        int32_t isAdaptive;
930        seamless = (mCodec != NULL &&
931                mInputFormat->findInt32("adaptive-playback", &isAdaptive) &&
932                isAdaptive);
933    }
934
935    ALOGV("%s seamless support for %s", seamless ? "yes" : "no", oldMime.c_str());
936    return seamless;
937}
938
939void NuPlayer::Decoder::rememberCodecSpecificData(const sp<AMessage> &format) {
940    if (format == NULL) {
941        return;
942    }
943    mCSDsForCurrentFormat.clear();
944    for (int32_t i = 0; ; ++i) {
945        AString tag = "csd-";
946        tag.append(i);
947        sp<ABuffer> buffer;
948        if (!format->findBuffer(tag.c_str(), &buffer)) {
949            break;
950        }
951        mCSDsForCurrentFormat.push(buffer);
952    }
953}
954
955void NuPlayer::Decoder::notifyResumeCompleteIfNecessary() {
956    if (mResumePending) {
957        mResumePending = false;
958
959        sp<AMessage> notify = mNotify->dup();
960        notify->setInt32("what", kWhatResumeCompleted);
961        notify->post();
962    }
963}
964
965}  // namespace android
966
967