MediaCodec.cpp revision 33223c4f97abb78fa8c92e1b8c817546f15d97e1 
1/*
2 * Copyright 2012, 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 "MediaCodec"
19#include <inttypes.h>
20
21#include "include/avc_utils.h"
22#include "include/SoftwareRenderer.h"
23
24#include <binder/IBatteryStats.h>
25#include <binder/IServiceManager.h>
26#include <gui/Surface.h>
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/foundation/AString.h>
32#include <media/stagefright/foundation/hexdump.h>
33#include <media/stagefright/ACodec.h>
34#include <media/stagefright/BufferProducerWrapper.h>
35#include <media/stagefright/MediaCodec.h>
36#include <media/stagefright/MediaCodecList.h>
37#include <media/stagefright/MediaDefs.h>
38#include <media/stagefright/MediaErrors.h>
39#include <media/stagefright/MetaData.h>
40#include <media/stagefright/NativeWindowWrapper.h>
41#include <private/android_filesystem_config.h>
42#include <utils/Log.h>
43#include <utils/Singleton.h>
44
45namespace android {
46
47struct MediaCodec::BatteryNotifier : public Singleton<BatteryNotifier> {
48    BatteryNotifier();
49
50    void noteStartVideo();
51    void noteStopVideo();
52    void noteStartAudio();
53    void noteStopAudio();
54
55private:
56    int32_t mVideoRefCount;
57    int32_t mAudioRefCount;
58    sp<IBatteryStats> mBatteryStatService;
59};
60
61ANDROID_SINGLETON_STATIC_INSTANCE(MediaCodec::BatteryNotifier)
62
63MediaCodec::BatteryNotifier::BatteryNotifier() :
64    mVideoRefCount(0),
65    mAudioRefCount(0) {
66    // get battery service
67    const sp<IServiceManager> sm(defaultServiceManager());
68    if (sm != NULL) {
69        const String16 name("batterystats");
70        mBatteryStatService = interface_cast<IBatteryStats>(sm->getService(name));
71        if (mBatteryStatService == NULL) {
72            ALOGE("batterystats service unavailable!");
73        }
74    }
75}
76
77void MediaCodec::BatteryNotifier::noteStartVideo() {
78    if (mVideoRefCount == 0 && mBatteryStatService != NULL) {
79        mBatteryStatService->noteStartVideo(AID_MEDIA);
80    }
81    mVideoRefCount++;
82}
83
84void MediaCodec::BatteryNotifier::noteStopVideo() {
85    if (mVideoRefCount == 0) {
86        ALOGW("BatteryNotifier::noteStop(): video refcount is broken!");
87        return;
88    }
89
90    mVideoRefCount--;
91    if (mVideoRefCount == 0 && mBatteryStatService != NULL) {
92        mBatteryStatService->noteStopVideo(AID_MEDIA);
93    }
94}
95
96void MediaCodec::BatteryNotifier::noteStartAudio() {
97    if (mAudioRefCount == 0 && mBatteryStatService != NULL) {
98        mBatteryStatService->noteStartAudio(AID_MEDIA);
99    }
100    mAudioRefCount++;
101}
102
103void MediaCodec::BatteryNotifier::noteStopAudio() {
104    if (mAudioRefCount == 0) {
105        ALOGW("BatteryNotifier::noteStop(): audio refcount is broken!");
106        return;
107    }
108
109    mAudioRefCount--;
110    if (mAudioRefCount == 0 && mBatteryStatService != NULL) {
111        mBatteryStatService->noteStopAudio(AID_MEDIA);
112    }
113}
114// static
115sp<MediaCodec> MediaCodec::CreateByType(
116        const sp<ALooper> &looper, const char *mime, bool encoder, status_t *err) {
117    sp<MediaCodec> codec = new MediaCodec(looper);
118
119    const status_t ret = codec->init(mime, true /* nameIsType */, encoder);
120    if (err != NULL) {
121        *err = ret;
122    }
123    return ret == OK ? codec : NULL; // NULL deallocates codec.
124}
125
126// static
127sp<MediaCodec> MediaCodec::CreateByComponentName(
128        const sp<ALooper> &looper, const char *name, status_t *err) {
129    sp<MediaCodec> codec = new MediaCodec(looper);
130
131    const status_t ret = codec->init(name, false /* nameIsType */, false /* encoder */);
132    if (err != NULL) {
133        *err = ret;
134    }
135    return ret == OK ? codec : NULL; // NULL deallocates codec.
136}
137
138MediaCodec::MediaCodec(const sp<ALooper> &looper)
139    : mState(UNINITIALIZED),
140      mLooper(looper),
141      mCodec(NULL),
142      mReplyID(0),
143      mFlags(0),
144      mStickyError(OK),
145      mSoftRenderer(NULL),
146      mBatteryStatNotified(false),
147      mIsVideo(false),
148      mDequeueInputTimeoutGeneration(0),
149      mDequeueInputReplyID(0),
150      mDequeueOutputTimeoutGeneration(0),
151      mDequeueOutputReplyID(0),
152      mHaveInputSurface(false) {
153}
154
155MediaCodec::~MediaCodec() {
156    CHECK_EQ(mState, UNINITIALIZED);
157}
158
159// static
160status_t MediaCodec::PostAndAwaitResponse(
161        const sp<AMessage> &msg, sp<AMessage> *response) {
162    status_t err = msg->postAndAwaitResponse(response);
163
164    if (err != OK) {
165        return err;
166    }
167
168    if (!(*response)->findInt32("err", &err)) {
169        err = OK;
170    }
171
172    return err;
173}
174
175// static
176void MediaCodec::PostReplyWithError(int32_t replyID, int32_t err) {
177    sp<AMessage> response = new AMessage;
178    response->setInt32("err", err);
179    response->postReply(replyID);
180}
181
182status_t MediaCodec::init(const AString &name, bool nameIsType, bool encoder) {
183    // save init parameters for reset
184    mInitName = name;
185    mInitNameIsType = nameIsType;
186    mInitIsEncoder = encoder;
187
188    // Current video decoders do not return from OMX_FillThisBuffer
189    // quickly, violating the OpenMAX specs, until that is remedied
190    // we need to invest in an extra looper to free the main event
191    // queue.
192    mCodec = new ACodec;
193    bool needDedicatedLooper = false;
194    if (nameIsType && !strncasecmp(name.c_str(), "video/", 6)) {
195        needDedicatedLooper = true;
196    } else {
197        AString tmp = name;
198        if (tmp.endsWith(".secure")) {
199            tmp.erase(tmp.size() - 7, 7);
200        }
201        const sp<IMediaCodecList> mcl = MediaCodecList::getInstance();
202        ssize_t codecIdx = mcl->findCodecByName(tmp.c_str());
203        if (codecIdx >= 0) {
204            const sp<MediaCodecInfo> info = mcl->getCodecInfo(codecIdx);
205            Vector<AString> mimes;
206            info->getSupportedMimes(&mimes);
207            for (size_t i = 0; i < mimes.size(); i++) {
208                if (mimes[i].startsWith("video/")) {
209                    needDedicatedLooper = true;
210                    break;
211                }
212            }
213        }
214    }
215
216    if (needDedicatedLooper) {
217        if (mCodecLooper == NULL) {
218            mCodecLooper = new ALooper;
219            mCodecLooper->setName("CodecLooper");
220            mCodecLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
221        }
222
223        mCodecLooper->registerHandler(mCodec);
224    } else {
225        mLooper->registerHandler(mCodec);
226    }
227
228    mLooper->registerHandler(this);
229
230    mCodec->setNotificationMessage(new AMessage(kWhatCodecNotify, id()));
231
232    sp<AMessage> msg = new AMessage(kWhatInit, id());
233    msg->setString("name", name);
234    msg->setInt32("nameIsType", nameIsType);
235
236    if (nameIsType) {
237        msg->setInt32("encoder", encoder);
238    }
239
240    sp<AMessage> response;
241    return PostAndAwaitResponse(msg, &response);
242}
243
244status_t MediaCodec::setCallback(const sp<AMessage> &callback) {
245    sp<AMessage> msg = new AMessage(kWhatSetCallback, id());
246    msg->setMessage("callback", callback);
247
248    sp<AMessage> response;
249    return PostAndAwaitResponse(msg, &response);
250}
251
252status_t MediaCodec::configure(
253        const sp<AMessage> &format,
254        const sp<Surface> &nativeWindow,
255        const sp<ICrypto> &crypto,
256        uint32_t flags) {
257    sp<AMessage> msg = new AMessage(kWhatConfigure, id());
258
259    msg->setMessage("format", format);
260    msg->setInt32("flags", flags);
261
262    if (nativeWindow != NULL) {
263        msg->setObject(
264                "native-window",
265                new NativeWindowWrapper(nativeWindow));
266    }
267
268    if (crypto != NULL) {
269        msg->setPointer("crypto", crypto.get());
270    }
271
272    sp<AMessage> response;
273    status_t err = PostAndAwaitResponse(msg, &response);
274
275    if (err != OK && err != INVALID_OPERATION) {
276        // MediaCodec now set state to UNINITIALIZED upon any fatal error.
277        // To maintain backward-compatibility, do a reset() to put codec
278        // back into INITIALIZED state.
279        // But don't reset if the err is INVALID_OPERATION, which means
280        // the configure failure is due to wrong state.
281
282        ALOGE("configure failed with err 0x%08x, resetting...", err);
283        reset();
284    }
285
286    return err;
287}
288
289status_t MediaCodec::createInputSurface(
290        sp<IGraphicBufferProducer>* bufferProducer) {
291    sp<AMessage> msg = new AMessage(kWhatCreateInputSurface, id());
292
293    sp<AMessage> response;
294    status_t err = PostAndAwaitResponse(msg, &response);
295    if (err == NO_ERROR) {
296        // unwrap the sp<IGraphicBufferProducer>
297        sp<RefBase> obj;
298        bool found = response->findObject("input-surface", &obj);
299        CHECK(found);
300        sp<BufferProducerWrapper> wrapper(
301                static_cast<BufferProducerWrapper*>(obj.get()));
302        *bufferProducer = wrapper->getBufferProducer();
303    } else {
304        ALOGW("createInputSurface failed, err=%d", err);
305    }
306    return err;
307}
308
309status_t MediaCodec::start() {
310    sp<AMessage> msg = new AMessage(kWhatStart, id());
311
312    sp<AMessage> response;
313    return PostAndAwaitResponse(msg, &response);
314}
315
316status_t MediaCodec::stop() {
317    sp<AMessage> msg = new AMessage(kWhatStop, id());
318
319    sp<AMessage> response;
320    return PostAndAwaitResponse(msg, &response);
321}
322
323status_t MediaCodec::release() {
324    sp<AMessage> msg = new AMessage(kWhatRelease, id());
325
326    sp<AMessage> response;
327    return PostAndAwaitResponse(msg, &response);
328}
329
330status_t MediaCodec::reset() {
331    /* When external-facing MediaCodec object is created,
332       it is already initialized.  Thus, reset is essentially
333       release() followed by init(), plus clearing the state */
334
335    status_t err = release();
336
337    // unregister handlers
338    if (mCodec != NULL) {
339        if (mCodecLooper != NULL) {
340            mCodecLooper->unregisterHandler(mCodec->id());
341        } else {
342            mLooper->unregisterHandler(mCodec->id());
343        }
344        mCodec = NULL;
345    }
346    mLooper->unregisterHandler(id());
347
348    mFlags = 0;    // clear all flags
349    mStickyError = OK;
350
351    // reset state not reset by setState(UNINITIALIZED)
352    mReplyID = 0;
353    mDequeueInputReplyID = 0;
354    mDequeueOutputReplyID = 0;
355    mDequeueInputTimeoutGeneration = 0;
356    mDequeueOutputTimeoutGeneration = 0;
357    mHaveInputSurface = false;
358
359    if (err == OK) {
360        err = init(mInitName, mInitNameIsType, mInitIsEncoder);
361    }
362    return err;
363}
364
365status_t MediaCodec::queueInputBuffer(
366        size_t index,
367        size_t offset,
368        size_t size,
369        int64_t presentationTimeUs,
370        uint32_t flags,
371        AString *errorDetailMsg) {
372    if (errorDetailMsg != NULL) {
373        errorDetailMsg->clear();
374    }
375
376    sp<AMessage> msg = new AMessage(kWhatQueueInputBuffer, id());
377    msg->setSize("index", index);
378    msg->setSize("offset", offset);
379    msg->setSize("size", size);
380    msg->setInt64("timeUs", presentationTimeUs);
381    msg->setInt32("flags", flags);
382    msg->setPointer("errorDetailMsg", errorDetailMsg);
383
384    sp<AMessage> response;
385    return PostAndAwaitResponse(msg, &response);
386}
387
388status_t MediaCodec::queueSecureInputBuffer(
389        size_t index,
390        size_t offset,
391        const CryptoPlugin::SubSample *subSamples,
392        size_t numSubSamples,
393        const uint8_t key[16],
394        const uint8_t iv[16],
395        CryptoPlugin::Mode mode,
396        int64_t presentationTimeUs,
397        uint32_t flags,
398        AString *errorDetailMsg) {
399    if (errorDetailMsg != NULL) {
400        errorDetailMsg->clear();
401    }
402
403    sp<AMessage> msg = new AMessage(kWhatQueueInputBuffer, id());
404    msg->setSize("index", index);
405    msg->setSize("offset", offset);
406    msg->setPointer("subSamples", (void *)subSamples);
407    msg->setSize("numSubSamples", numSubSamples);
408    msg->setPointer("key", (void *)key);
409    msg->setPointer("iv", (void *)iv);
410    msg->setInt32("mode", mode);
411    msg->setInt64("timeUs", presentationTimeUs);
412    msg->setInt32("flags", flags);
413    msg->setPointer("errorDetailMsg", errorDetailMsg);
414
415    sp<AMessage> response;
416    status_t err = PostAndAwaitResponse(msg, &response);
417
418    return err;
419}
420
421status_t MediaCodec::dequeueInputBuffer(size_t *index, int64_t timeoutUs) {
422    sp<AMessage> msg = new AMessage(kWhatDequeueInputBuffer, id());
423    msg->setInt64("timeoutUs", timeoutUs);
424
425    sp<AMessage> response;
426    status_t err;
427    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
428        return err;
429    }
430
431    CHECK(response->findSize("index", index));
432
433    return OK;
434}
435
436status_t MediaCodec::dequeueOutputBuffer(
437        size_t *index,
438        size_t *offset,
439        size_t *size,
440        int64_t *presentationTimeUs,
441        uint32_t *flags,
442        int64_t timeoutUs) {
443    sp<AMessage> msg = new AMessage(kWhatDequeueOutputBuffer, id());
444    msg->setInt64("timeoutUs", timeoutUs);
445
446    sp<AMessage> response;
447    status_t err;
448    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
449        return err;
450    }
451
452    CHECK(response->findSize("index", index));
453    CHECK(response->findSize("offset", offset));
454    CHECK(response->findSize("size", size));
455    CHECK(response->findInt64("timeUs", presentationTimeUs));
456    CHECK(response->findInt32("flags", (int32_t *)flags));
457
458    return OK;
459}
460
461status_t MediaCodec::renderOutputBufferAndRelease(size_t index) {
462    sp<AMessage> msg = new AMessage(kWhatReleaseOutputBuffer, id());
463    msg->setSize("index", index);
464    msg->setInt32("render", true);
465
466    sp<AMessage> response;
467    return PostAndAwaitResponse(msg, &response);
468}
469
470status_t MediaCodec::renderOutputBufferAndRelease(size_t index, int64_t timestampNs) {
471    sp<AMessage> msg = new AMessage(kWhatReleaseOutputBuffer, id());
472    msg->setSize("index", index);
473    msg->setInt32("render", true);
474    msg->setInt64("timestampNs", timestampNs);
475
476    sp<AMessage> response;
477    return PostAndAwaitResponse(msg, &response);
478}
479
480status_t MediaCodec::releaseOutputBuffer(size_t index) {
481    sp<AMessage> msg = new AMessage(kWhatReleaseOutputBuffer, id());
482    msg->setSize("index", index);
483
484    sp<AMessage> response;
485    return PostAndAwaitResponse(msg, &response);
486}
487
488status_t MediaCodec::signalEndOfInputStream() {
489    sp<AMessage> msg = new AMessage(kWhatSignalEndOfInputStream, id());
490
491    sp<AMessage> response;
492    return PostAndAwaitResponse(msg, &response);
493}
494
495status_t MediaCodec::getOutputFormat(sp<AMessage> *format) const {
496    sp<AMessage> msg = new AMessage(kWhatGetOutputFormat, id());
497
498    sp<AMessage> response;
499    status_t err;
500    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
501        return err;
502    }
503
504    CHECK(response->findMessage("format", format));
505
506    return OK;
507}
508
509status_t MediaCodec::getInputFormat(sp<AMessage> *format) const {
510    sp<AMessage> msg = new AMessage(kWhatGetInputFormat, id());
511
512    sp<AMessage> response;
513    status_t err;
514    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
515        return err;
516    }
517
518    CHECK(response->findMessage("format", format));
519
520    return OK;
521}
522
523status_t MediaCodec::getName(AString *name) const {
524    sp<AMessage> msg = new AMessage(kWhatGetName, id());
525
526    sp<AMessage> response;
527    status_t err;
528    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
529        return err;
530    }
531
532    CHECK(response->findString("name", name));
533
534    return OK;
535}
536
537status_t MediaCodec::getInputBuffers(Vector<sp<ABuffer> > *buffers) const {
538    sp<AMessage> msg = new AMessage(kWhatGetBuffers, id());
539    msg->setInt32("portIndex", kPortIndexInput);
540    msg->setPointer("buffers", buffers);
541
542    sp<AMessage> response;
543    return PostAndAwaitResponse(msg, &response);
544}
545
546status_t MediaCodec::getOutputBuffers(Vector<sp<ABuffer> > *buffers) const {
547    sp<AMessage> msg = new AMessage(kWhatGetBuffers, id());
548    msg->setInt32("portIndex", kPortIndexOutput);
549    msg->setPointer("buffers", buffers);
550
551    sp<AMessage> response;
552    return PostAndAwaitResponse(msg, &response);
553}
554
555status_t MediaCodec::getOutputBuffer(size_t index, sp<ABuffer> *buffer) {
556    sp<AMessage> format;
557    return getBufferAndFormat(kPortIndexOutput, index, buffer, &format);
558}
559
560status_t MediaCodec::getOutputFormat(size_t index, sp<AMessage> *format) {
561    sp<ABuffer> buffer;
562    return getBufferAndFormat(kPortIndexOutput, index, &buffer, format);
563}
564
565status_t MediaCodec::getInputBuffer(size_t index, sp<ABuffer> *buffer) {
566    sp<AMessage> format;
567    return getBufferAndFormat(kPortIndexInput, index, buffer, &format);
568}
569
570bool MediaCodec::isExecuting() const {
571    return mState == STARTED || mState == FLUSHED;
572}
573
574status_t MediaCodec::getBufferAndFormat(
575        size_t portIndex, size_t index,
576        sp<ABuffer> *buffer, sp<AMessage> *format) {
577    // use mutex instead of a context switch
578
579    buffer->clear();
580    format->clear();
581    if (!isExecuting()) {
582        return INVALID_OPERATION;
583    }
584
585    // we do not want mPortBuffers to change during this section
586    // we also don't want mOwnedByClient to change during this
587    Mutex::Autolock al(mBufferLock);
588    Vector<BufferInfo> *buffers = &mPortBuffers[portIndex];
589    if (index < buffers->size()) {
590        const BufferInfo &info = buffers->itemAt(index);
591        if (info.mOwnedByClient) {
592            // by the time buffers array is initialized, crypto is set
593            if (portIndex == kPortIndexInput && mCrypto != NULL) {
594                *buffer = info.mEncryptedData;
595            } else {
596                *buffer = info.mData;
597            }
598            *format = info.mFormat;
599        }
600    }
601    return OK;
602}
603
604status_t MediaCodec::flush() {
605    sp<AMessage> msg = new AMessage(kWhatFlush, id());
606
607    sp<AMessage> response;
608    return PostAndAwaitResponse(msg, &response);
609}
610
611status_t MediaCodec::requestIDRFrame() {
612    (new AMessage(kWhatRequestIDRFrame, id()))->post();
613
614    return OK;
615}
616
617void MediaCodec::requestActivityNotification(const sp<AMessage> &notify) {
618    sp<AMessage> msg = new AMessage(kWhatRequestActivityNotification, id());
619    msg->setMessage("notify", notify);
620    msg->post();
621}
622
623////////////////////////////////////////////////////////////////////////////////
624
625void MediaCodec::cancelPendingDequeueOperations() {
626    if (mFlags & kFlagDequeueInputPending) {
627        PostReplyWithError(mDequeueInputReplyID, INVALID_OPERATION);
628
629        ++mDequeueInputTimeoutGeneration;
630        mDequeueInputReplyID = 0;
631        mFlags &= ~kFlagDequeueInputPending;
632    }
633
634    if (mFlags & kFlagDequeueOutputPending) {
635        PostReplyWithError(mDequeueOutputReplyID, INVALID_OPERATION);
636
637        ++mDequeueOutputTimeoutGeneration;
638        mDequeueOutputReplyID = 0;
639        mFlags &= ~kFlagDequeueOutputPending;
640    }
641}
642
643bool MediaCodec::handleDequeueInputBuffer(uint32_t replyID, bool newRequest) {
644    if (!isExecuting() || (mFlags & kFlagIsAsync)
645            || (newRequest && (mFlags & kFlagDequeueInputPending))) {
646        PostReplyWithError(replyID, INVALID_OPERATION);
647        return true;
648    } else if (mFlags & kFlagStickyError) {
649        PostReplyWithError(replyID, getStickyError());
650        return true;
651    }
652
653    ssize_t index = dequeuePortBuffer(kPortIndexInput);
654
655    if (index < 0) {
656        CHECK_EQ(index, -EAGAIN);
657        return false;
658    }
659
660    sp<AMessage> response = new AMessage;
661    response->setSize("index", index);
662    response->postReply(replyID);
663
664    return true;
665}
666
667bool MediaCodec::handleDequeueOutputBuffer(uint32_t replyID, bool newRequest) {
668    sp<AMessage> response = new AMessage;
669
670    if (!isExecuting() || (mFlags & kFlagIsAsync)
671            || (newRequest && (mFlags & kFlagDequeueOutputPending))) {
672        response->setInt32("err", INVALID_OPERATION);
673    } else if (mFlags & kFlagStickyError) {
674        response->setInt32("err", getStickyError());
675    } else if (mFlags & kFlagOutputBuffersChanged) {
676        response->setInt32("err", INFO_OUTPUT_BUFFERS_CHANGED);
677        mFlags &= ~kFlagOutputBuffersChanged;
678    } else if (mFlags & kFlagOutputFormatChanged) {
679        response->setInt32("err", INFO_FORMAT_CHANGED);
680        mFlags &= ~kFlagOutputFormatChanged;
681    } else {
682        ssize_t index = dequeuePortBuffer(kPortIndexOutput);
683
684        if (index < 0) {
685            CHECK_EQ(index, -EAGAIN);
686            return false;
687        }
688
689        const sp<ABuffer> &buffer =
690            mPortBuffers[kPortIndexOutput].itemAt(index).mData;
691
692        response->setSize("index", index);
693        response->setSize("offset", buffer->offset());
694        response->setSize("size", buffer->size());
695
696        int64_t timeUs;
697        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
698
699        response->setInt64("timeUs", timeUs);
700
701        int32_t omxFlags;
702        CHECK(buffer->meta()->findInt32("omxFlags", &omxFlags));
703
704        uint32_t flags = 0;
705        if (omxFlags & OMX_BUFFERFLAG_SYNCFRAME) {
706            flags |= BUFFER_FLAG_SYNCFRAME;
707        }
708        if (omxFlags & OMX_BUFFERFLAG_CODECCONFIG) {
709            flags |= BUFFER_FLAG_CODECCONFIG;
710        }
711        if (omxFlags & OMX_BUFFERFLAG_EOS) {
712            flags |= BUFFER_FLAG_EOS;
713        }
714
715        response->setInt32("flags", flags);
716    }
717
718    response->postReply(replyID);
719
720    return true;
721}
722
723void MediaCodec::onMessageReceived(const sp<AMessage> &msg) {
724    switch (msg->what()) {
725        case kWhatCodecNotify:
726        {
727            int32_t what;
728            CHECK(msg->findInt32("what", &what));
729
730            switch (what) {
731                case CodecBase::kWhatError:
732                {
733                    int32_t err, actionCode;
734                    CHECK(msg->findInt32("err", &err));
735                    CHECK(msg->findInt32("actionCode", &actionCode));
736
737                    ALOGE("Codec reported err %#x, actionCode %d, while in state %d",
738                            err, actionCode, mState);
739                    if (err == DEAD_OBJECT) {
740                        mFlags |= kFlagSawMediaServerDie;
741                        mFlags &= ~kFlagIsComponentAllocated;
742                    }
743
744                    bool sendErrorResponse = true;
745
746                    switch (mState) {
747                        case INITIALIZING:
748                        {
749                            setState(UNINITIALIZED);
750                            break;
751                        }
752
753                        case CONFIGURING:
754                        {
755                            setState(actionCode == ACTION_CODE_FATAL ?
756                                    UNINITIALIZED : INITIALIZED);
757                            break;
758                        }
759
760                        case STARTING:
761                        {
762                            setState(actionCode == ACTION_CODE_FATAL ?
763                                    UNINITIALIZED : CONFIGURED);
764                            break;
765                        }
766
767                        case STOPPING:
768                        case RELEASING:
769                        {
770                            // Ignore the error, assuming we'll still get
771                            // the shutdown complete notification.
772
773                            sendErrorResponse = false;
774
775                            if (mFlags & kFlagSawMediaServerDie) {
776                                // MediaServer died, there definitely won't
777                                // be a shutdown complete notification after
778                                // all.
779
780                                // note that we're directly going from
781                                // STOPPING->UNINITIALIZED, instead of the
782                                // usual STOPPING->INITIALIZED state.
783                                setState(UNINITIALIZED);
784                                if (mState == RELEASING) {
785                                    mComponentName.clear();
786                                }
787                                (new AMessage)->postReply(mReplyID);
788                            }
789                            break;
790                        }
791
792                        case FLUSHING:
793                        {
794                            if (actionCode == ACTION_CODE_FATAL) {
795                                setState(UNINITIALIZED);
796                            } else {
797                                setState(
798                                        (mFlags & kFlagIsAsync) ? FLUSHED : STARTED);
799                            }
800                            break;
801                        }
802
803                        case FLUSHED:
804                        case STARTED:
805                        {
806                            sendErrorResponse = false;
807
808                            setStickyError(err);
809                            postActivityNotificationIfPossible();
810
811                            cancelPendingDequeueOperations();
812
813                            if (mFlags & kFlagIsAsync) {
814                                onError(err, actionCode);
815                            }
816                            switch (actionCode) {
817                            case ACTION_CODE_TRANSIENT:
818                                break;
819                            case ACTION_CODE_RECOVERABLE:
820                                setState(INITIALIZED);
821                                break;
822                            default:
823                                setState(UNINITIALIZED);
824                                break;
825                            }
826                            break;
827                        }
828
829                        default:
830                        {
831                            sendErrorResponse = false;
832
833                            setStickyError(err);
834                            postActivityNotificationIfPossible();
835
836                            // actionCode in an uninitialized state is always fatal.
837                            if (mState == UNINITIALIZED) {
838                                actionCode = ACTION_CODE_FATAL;
839                            }
840                            if (mFlags & kFlagIsAsync) {
841                                onError(err, actionCode);
842                            }
843                            switch (actionCode) {
844                            case ACTION_CODE_TRANSIENT:
845                                break;
846                            case ACTION_CODE_RECOVERABLE:
847                                setState(INITIALIZED);
848                                break;
849                            default:
850                                setState(UNINITIALIZED);
851                                break;
852                            }
853                            break;
854                        }
855                    }
856
857                    if (sendErrorResponse) {
858                        PostReplyWithError(mReplyID, err);
859                    }
860                    break;
861                }
862
863                case CodecBase::kWhatComponentAllocated:
864                {
865                    CHECK_EQ(mState, INITIALIZING);
866                    setState(INITIALIZED);
867                    mFlags |= kFlagIsComponentAllocated;
868
869                    CHECK(msg->findString("componentName", &mComponentName));
870
871                    if (mComponentName.startsWith("OMX.google.")) {
872                        mFlags |= kFlagIsSoftwareCodec;
873                    } else {
874                        mFlags &= ~kFlagIsSoftwareCodec;
875                    }
876
877                    if (mComponentName.endsWith(".secure")) {
878                        mFlags |= kFlagIsSecure;
879                    } else {
880                        mFlags &= ~kFlagIsSecure;
881                    }
882
883                    (new AMessage)->postReply(mReplyID);
884                    break;
885                }
886
887                case CodecBase::kWhatComponentConfigured:
888                {
889                    CHECK_EQ(mState, CONFIGURING);
890
891                    // reset input surface flag
892                    mHaveInputSurface = false;
893
894                    CHECK(msg->findMessage("input-format", &mInputFormat));
895                    CHECK(msg->findMessage("output-format", &mOutputFormat));
896
897                    setState(CONFIGURED);
898                    (new AMessage)->postReply(mReplyID);
899                    break;
900                }
901
902                case CodecBase::kWhatInputSurfaceCreated:
903                {
904                    // response to initiateCreateInputSurface()
905                    status_t err = NO_ERROR;
906                    sp<AMessage> response = new AMessage();
907                    if (!msg->findInt32("err", &err)) {
908                        sp<RefBase> obj;
909                        msg->findObject("input-surface", &obj);
910                        CHECK(obj != NULL);
911                        response->setObject("input-surface", obj);
912                        mHaveInputSurface = true;
913                    } else {
914                        response->setInt32("err", err);
915                    }
916                    response->postReply(mReplyID);
917                    break;
918                }
919
920                case CodecBase::kWhatSignaledInputEOS:
921                {
922                    // response to signalEndOfInputStream()
923                    sp<AMessage> response = new AMessage();
924                    status_t err;
925                    if (msg->findInt32("err", &err)) {
926                        response->setInt32("err", err);
927                    }
928                    response->postReply(mReplyID);
929                    break;
930                }
931
932
933                case CodecBase::kWhatBuffersAllocated:
934                {
935                    Mutex::Autolock al(mBufferLock);
936                    int32_t portIndex;
937                    CHECK(msg->findInt32("portIndex", &portIndex));
938
939                    ALOGV("%s buffers allocated",
940                          portIndex == kPortIndexInput ? "input" : "output");
941
942                    CHECK(portIndex == kPortIndexInput
943                            || portIndex == kPortIndexOutput);
944
945                    mPortBuffers[portIndex].clear();
946
947                    Vector<BufferInfo> *buffers = &mPortBuffers[portIndex];
948
949                    sp<RefBase> obj;
950                    CHECK(msg->findObject("portDesc", &obj));
951
952                    sp<CodecBase::PortDescription> portDesc =
953                        static_cast<CodecBase::PortDescription *>(obj.get());
954
955                    size_t numBuffers = portDesc->countBuffers();
956
957                    for (size_t i = 0; i < numBuffers; ++i) {
958                        BufferInfo info;
959                        info.mBufferID = portDesc->bufferIDAt(i);
960                        info.mOwnedByClient = false;
961                        info.mData = portDesc->bufferAt(i);
962
963                        if (portIndex == kPortIndexInput && mCrypto != NULL) {
964                            info.mEncryptedData =
965                                new ABuffer(info.mData->capacity());
966                        }
967
968                        buffers->push_back(info);
969                    }
970
971                    if (portIndex == kPortIndexOutput) {
972                        if (mState == STARTING) {
973                            // We're always allocating output buffers after
974                            // allocating input buffers, so this is a good
975                            // indication that now all buffers are allocated.
976                            setState(STARTED);
977                            (new AMessage)->postReply(mReplyID);
978                        } else {
979                            mFlags |= kFlagOutputBuffersChanged;
980                            postActivityNotificationIfPossible();
981                        }
982                    }
983                    break;
984                }
985
986                case CodecBase::kWhatOutputFormatChanged:
987                {
988                    ALOGV("codec output format changed");
989
990                    if (mSoftRenderer == NULL &&
991                            mNativeWindow != NULL &&
992                            (mFlags & kFlagIsSoftwareCodec)) {
993                        AString mime;
994                        CHECK(msg->findString("mime", &mime));
995
996                        if (mime.startsWithIgnoreCase("video/")) {
997                            mSoftRenderer = new SoftwareRenderer(mNativeWindow);
998                        }
999                    }
1000
1001                    mOutputFormat = msg;
1002
1003                    if (mFlags & kFlagIsEncoder) {
1004                        // Before we announce the format change we should
1005                        // collect codec specific data and amend the output
1006                        // format as necessary.
1007                        mFlags |= kFlagGatherCodecSpecificData;
1008                    } else if (mFlags & kFlagIsAsync) {
1009                        onOutputFormatChanged();
1010                    } else {
1011                        mFlags |= kFlagOutputFormatChanged;
1012                        postActivityNotificationIfPossible();
1013                    }
1014                    break;
1015                }
1016
1017                case CodecBase::kWhatFillThisBuffer:
1018                {
1019                    /* size_t index = */updateBuffers(kPortIndexInput, msg);
1020
1021                    if (mState == FLUSHING
1022                            || mState == STOPPING
1023                            || mState == RELEASING) {
1024                        returnBuffersToCodecOnPort(kPortIndexInput);
1025                        break;
1026                    }
1027
1028                    if (!mCSD.empty()) {
1029                        ssize_t index = dequeuePortBuffer(kPortIndexInput);
1030                        CHECK_GE(index, 0);
1031
1032                        // If codec specific data had been specified as
1033                        // part of the format in the call to configure and
1034                        // if there's more csd left, we submit it here
1035                        // clients only get access to input buffers once
1036                        // this data has been exhausted.
1037
1038                        status_t err = queueCSDInputBuffer(index);
1039
1040                        if (err != OK) {
1041                            ALOGE("queueCSDInputBuffer failed w/ error %d",
1042                                  err);
1043
1044                            setStickyError(err);
1045                            postActivityNotificationIfPossible();
1046
1047                            cancelPendingDequeueOperations();
1048                        }
1049                        break;
1050                    }
1051
1052                    if (mFlags & kFlagIsAsync) {
1053                        if (!mHaveInputSurface) {
1054                            onInputBufferAvailable();
1055                        }
1056                    } else if (mFlags & kFlagDequeueInputPending) {
1057                        CHECK(handleDequeueInputBuffer(mDequeueInputReplyID));
1058
1059                        ++mDequeueInputTimeoutGeneration;
1060                        mFlags &= ~kFlagDequeueInputPending;
1061                        mDequeueInputReplyID = 0;
1062                    } else {
1063                        postActivityNotificationIfPossible();
1064                    }
1065                    break;
1066                }
1067
1068                case CodecBase::kWhatDrainThisBuffer:
1069                {
1070                    /* size_t index = */updateBuffers(kPortIndexOutput, msg);
1071
1072                    if (mState == FLUSHING
1073                            || mState == STOPPING
1074                            || mState == RELEASING) {
1075                        returnBuffersToCodecOnPort(kPortIndexOutput);
1076                        break;
1077                    }
1078
1079                    sp<ABuffer> buffer;
1080                    CHECK(msg->findBuffer("buffer", &buffer));
1081
1082                    int32_t omxFlags;
1083                    CHECK(msg->findInt32("flags", &omxFlags));
1084
1085                    buffer->meta()->setInt32("omxFlags", omxFlags);
1086
1087                    if (mFlags & kFlagGatherCodecSpecificData) {
1088                        // This is the very first output buffer after a
1089                        // format change was signalled, it'll either contain
1090                        // the one piece of codec specific data we can expect
1091                        // or there won't be codec specific data.
1092                        if (omxFlags & OMX_BUFFERFLAG_CODECCONFIG) {
1093                            status_t err =
1094                                amendOutputFormatWithCodecSpecificData(buffer);
1095
1096                            if (err != OK) {
1097                                ALOGE("Codec spit out malformed codec "
1098                                      "specific data!");
1099                            }
1100                        }
1101
1102                        mFlags &= ~kFlagGatherCodecSpecificData;
1103                        if (mFlags & kFlagIsAsync) {
1104                            onOutputFormatChanged();
1105                        } else {
1106                            mFlags |= kFlagOutputFormatChanged;
1107                        }
1108                    }
1109
1110                    if (mFlags & kFlagIsAsync) {
1111                        onOutputBufferAvailable();
1112                    } else if (mFlags & kFlagDequeueOutputPending) {
1113                        CHECK(handleDequeueOutputBuffer(mDequeueOutputReplyID));
1114
1115                        ++mDequeueOutputTimeoutGeneration;
1116                        mFlags &= ~kFlagDequeueOutputPending;
1117                        mDequeueOutputReplyID = 0;
1118                    } else {
1119                        postActivityNotificationIfPossible();
1120                    }
1121
1122                    break;
1123                }
1124
1125                case CodecBase::kWhatEOS:
1126                {
1127                    // We already notify the client of this by using the
1128                    // corresponding flag in "onOutputBufferReady".
1129                    break;
1130                }
1131
1132                case CodecBase::kWhatShutdownCompleted:
1133                {
1134                    if (mState == STOPPING) {
1135                        setState(INITIALIZED);
1136                    } else {
1137                        CHECK_EQ(mState, RELEASING);
1138                        setState(UNINITIALIZED);
1139                        mComponentName.clear();
1140                    }
1141                    mFlags &= ~kFlagIsComponentAllocated;
1142
1143                    (new AMessage)->postReply(mReplyID);
1144                    break;
1145                }
1146
1147                case CodecBase::kWhatFlushCompleted:
1148                {
1149                    if (mState != FLUSHING) {
1150                        ALOGW("received FlushCompleted message in state %d",
1151                                mState);
1152                        break;
1153                    }
1154
1155                    if (mFlags & kFlagIsAsync) {
1156                        setState(FLUSHED);
1157                    } else {
1158                        setState(STARTED);
1159                        mCodec->signalResume();
1160                    }
1161
1162                    (new AMessage)->postReply(mReplyID);
1163                    break;
1164                }
1165
1166                default:
1167                    TRESPASS();
1168            }
1169            break;
1170        }
1171
1172        case kWhatInit:
1173        {
1174            uint32_t replyID;
1175            CHECK(msg->senderAwaitsResponse(&replyID));
1176
1177            if (mState != UNINITIALIZED) {
1178                PostReplyWithError(replyID, INVALID_OPERATION);
1179                break;
1180            }
1181
1182            mReplyID = replyID;
1183            setState(INITIALIZING);
1184
1185            AString name;
1186            CHECK(msg->findString("name", &name));
1187
1188            int32_t nameIsType;
1189            int32_t encoder = false;
1190            CHECK(msg->findInt32("nameIsType", &nameIsType));
1191            if (nameIsType) {
1192                CHECK(msg->findInt32("encoder", &encoder));
1193            }
1194
1195            sp<AMessage> format = new AMessage;
1196
1197            if (nameIsType) {
1198                format->setString("mime", name.c_str());
1199                format->setInt32("encoder", encoder);
1200            } else {
1201                format->setString("componentName", name.c_str());
1202            }
1203
1204            mCodec->initiateAllocateComponent(format);
1205            break;
1206        }
1207
1208        case kWhatSetCallback:
1209        {
1210            uint32_t replyID;
1211            CHECK(msg->senderAwaitsResponse(&replyID));
1212
1213            if (mState == UNINITIALIZED
1214                    || mState == INITIALIZING
1215                    || isExecuting()) {
1216                // callback can't be set after codec is executing,
1217                // or before it's initialized (as the callback
1218                // will be cleared when it goes to INITIALIZED)
1219                PostReplyWithError(replyID, INVALID_OPERATION);
1220                break;
1221            }
1222
1223            sp<AMessage> callback;
1224            CHECK(msg->findMessage("callback", &callback));
1225
1226            mCallback = callback;
1227
1228            if (mCallback != NULL) {
1229                ALOGI("MediaCodec will operate in async mode");
1230                mFlags |= kFlagIsAsync;
1231            } else {
1232                mFlags &= ~kFlagIsAsync;
1233            }
1234
1235            sp<AMessage> response = new AMessage;
1236            response->postReply(replyID);
1237            break;
1238        }
1239
1240        case kWhatConfigure:
1241        {
1242            uint32_t replyID;
1243            CHECK(msg->senderAwaitsResponse(&replyID));
1244
1245            if (mState != INITIALIZED) {
1246                PostReplyWithError(replyID, INVALID_OPERATION);
1247                break;
1248            }
1249
1250            sp<RefBase> obj;
1251            if (!msg->findObject("native-window", &obj)) {
1252                obj.clear();
1253            }
1254
1255            sp<AMessage> format;
1256            CHECK(msg->findMessage("format", &format));
1257
1258            if (obj != NULL) {
1259                format->setObject("native-window", obj);
1260
1261                status_t err = setNativeWindow(
1262                    static_cast<NativeWindowWrapper *>(obj.get())
1263                        ->getSurfaceTextureClient());
1264
1265                if (err != OK) {
1266                    PostReplyWithError(replyID, err);
1267                    break;
1268                }
1269            } else {
1270                setNativeWindow(NULL);
1271            }
1272
1273            mReplyID = replyID;
1274            setState(CONFIGURING);
1275
1276            void *crypto;
1277            if (!msg->findPointer("crypto", &crypto)) {
1278                crypto = NULL;
1279            }
1280
1281            mCrypto = static_cast<ICrypto *>(crypto);
1282
1283            uint32_t flags;
1284            CHECK(msg->findInt32("flags", (int32_t *)&flags));
1285
1286            if (flags & CONFIGURE_FLAG_ENCODE) {
1287                format->setInt32("encoder", true);
1288                mFlags |= kFlagIsEncoder;
1289            }
1290
1291            extractCSD(format);
1292
1293            mCodec->initiateConfigureComponent(format);
1294            break;
1295        }
1296
1297        case kWhatCreateInputSurface:
1298        {
1299            uint32_t replyID;
1300            CHECK(msg->senderAwaitsResponse(&replyID));
1301
1302            // Must be configured, but can't have been started yet.
1303            if (mState != CONFIGURED) {
1304                PostReplyWithError(replyID, INVALID_OPERATION);
1305                break;
1306            }
1307
1308            mReplyID = replyID;
1309            mCodec->initiateCreateInputSurface();
1310            break;
1311        }
1312
1313        case kWhatStart:
1314        {
1315            uint32_t replyID;
1316            CHECK(msg->senderAwaitsResponse(&replyID));
1317
1318            if (mState == FLUSHED) {
1319                mCodec->signalResume();
1320                PostReplyWithError(replyID, OK);
1321            } else if (mState != CONFIGURED) {
1322                PostReplyWithError(replyID, INVALID_OPERATION);
1323                break;
1324            }
1325
1326            mReplyID = replyID;
1327            setState(STARTING);
1328
1329            mCodec->initiateStart();
1330            break;
1331        }
1332
1333        case kWhatStop:
1334        case kWhatRelease:
1335        {
1336            State targetState =
1337                (msg->what() == kWhatStop) ? INITIALIZED : UNINITIALIZED;
1338
1339            uint32_t replyID;
1340            CHECK(msg->senderAwaitsResponse(&replyID));
1341
1342            if (!((mFlags & kFlagIsComponentAllocated) && targetState == UNINITIALIZED) // See 1
1343                    && mState != INITIALIZED
1344                    && mState != CONFIGURED && !isExecuting()) {
1345                // 1) Permit release to shut down the component if allocated.
1346                //
1347                // 2) We may be in "UNINITIALIZED" state already and
1348                // also shutdown the encoder/decoder without the
1349                // client being aware of this if media server died while
1350                // we were being stopped. The client would assume that
1351                // after stop() returned, it would be safe to call release()
1352                // and it should be in this case, no harm to allow a release()
1353                // if we're already uninitialized.
1354                sp<AMessage> response = new AMessage;
1355                status_t err = mState == targetState ? OK : INVALID_OPERATION;
1356                response->setInt32("err", err);
1357                if (err == OK && targetState == UNINITIALIZED) {
1358                    mComponentName.clear();
1359                }
1360                response->postReply(replyID);
1361                break;
1362            }
1363
1364            if (mFlags & kFlagSawMediaServerDie) {
1365                // It's dead, Jim. Don't expect initiateShutdown to yield
1366                // any useful results now...
1367                setState(UNINITIALIZED);
1368                if (targetState == UNINITIALIZED) {
1369                    mComponentName.clear();
1370                }
1371                (new AMessage)->postReply(replyID);
1372                break;
1373            }
1374
1375            mReplyID = replyID;
1376            setState(msg->what() == kWhatStop ? STOPPING : RELEASING);
1377
1378            mCodec->initiateShutdown(
1379                    msg->what() == kWhatStop /* keepComponentAllocated */);
1380
1381            returnBuffersToCodec();
1382            break;
1383        }
1384
1385        case kWhatDequeueInputBuffer:
1386        {
1387            uint32_t replyID;
1388            CHECK(msg->senderAwaitsResponse(&replyID));
1389
1390            if (mFlags & kFlagIsAsync) {
1391                ALOGE("dequeueOutputBuffer can't be used in async mode");
1392                PostReplyWithError(replyID, INVALID_OPERATION);
1393                break;
1394            }
1395
1396            if (mHaveInputSurface) {
1397                ALOGE("dequeueInputBuffer can't be used with input surface");
1398                PostReplyWithError(replyID, INVALID_OPERATION);
1399                break;
1400            }
1401
1402            if (handleDequeueInputBuffer(replyID, true /* new request */)) {
1403                break;
1404            }
1405
1406            int64_t timeoutUs;
1407            CHECK(msg->findInt64("timeoutUs", &timeoutUs));
1408
1409            if (timeoutUs == 0ll) {
1410                PostReplyWithError(replyID, -EAGAIN);
1411                break;
1412            }
1413
1414            mFlags |= kFlagDequeueInputPending;
1415            mDequeueInputReplyID = replyID;
1416
1417            if (timeoutUs > 0ll) {
1418                sp<AMessage> timeoutMsg =
1419                    new AMessage(kWhatDequeueInputTimedOut, id());
1420                timeoutMsg->setInt32(
1421                        "generation", ++mDequeueInputTimeoutGeneration);
1422                timeoutMsg->post(timeoutUs);
1423            }
1424            break;
1425        }
1426
1427        case kWhatDequeueInputTimedOut:
1428        {
1429            int32_t generation;
1430            CHECK(msg->findInt32("generation", &generation));
1431
1432            if (generation != mDequeueInputTimeoutGeneration) {
1433                // Obsolete
1434                break;
1435            }
1436
1437            CHECK(mFlags & kFlagDequeueInputPending);
1438
1439            PostReplyWithError(mDequeueInputReplyID, -EAGAIN);
1440
1441            mFlags &= ~kFlagDequeueInputPending;
1442            mDequeueInputReplyID = 0;
1443            break;
1444        }
1445
1446        case kWhatQueueInputBuffer:
1447        {
1448            uint32_t replyID;
1449            CHECK(msg->senderAwaitsResponse(&replyID));
1450
1451            if (!isExecuting()) {
1452                PostReplyWithError(replyID, INVALID_OPERATION);
1453                break;
1454            } else if (mFlags & kFlagStickyError) {
1455                PostReplyWithError(replyID, getStickyError());
1456                break;
1457            }
1458
1459            status_t err = onQueueInputBuffer(msg);
1460
1461            PostReplyWithError(replyID, err);
1462            break;
1463        }
1464
1465        case kWhatDequeueOutputBuffer:
1466        {
1467            uint32_t replyID;
1468            CHECK(msg->senderAwaitsResponse(&replyID));
1469
1470            if (mFlags & kFlagIsAsync) {
1471                ALOGE("dequeueOutputBuffer can't be used in async mode");
1472                PostReplyWithError(replyID, INVALID_OPERATION);
1473                break;
1474            }
1475
1476            if (handleDequeueOutputBuffer(replyID, true /* new request */)) {
1477                break;
1478            }
1479
1480            int64_t timeoutUs;
1481            CHECK(msg->findInt64("timeoutUs", &timeoutUs));
1482
1483            if (timeoutUs == 0ll) {
1484                PostReplyWithError(replyID, -EAGAIN);
1485                break;
1486            }
1487
1488            mFlags |= kFlagDequeueOutputPending;
1489            mDequeueOutputReplyID = replyID;
1490
1491            if (timeoutUs > 0ll) {
1492                sp<AMessage> timeoutMsg =
1493                    new AMessage(kWhatDequeueOutputTimedOut, id());
1494                timeoutMsg->setInt32(
1495                        "generation", ++mDequeueOutputTimeoutGeneration);
1496                timeoutMsg->post(timeoutUs);
1497            }
1498            break;
1499        }
1500
1501        case kWhatDequeueOutputTimedOut:
1502        {
1503            int32_t generation;
1504            CHECK(msg->findInt32("generation", &generation));
1505
1506            if (generation != mDequeueOutputTimeoutGeneration) {
1507                // Obsolete
1508                break;
1509            }
1510
1511            CHECK(mFlags & kFlagDequeueOutputPending);
1512
1513            PostReplyWithError(mDequeueOutputReplyID, -EAGAIN);
1514
1515            mFlags &= ~kFlagDequeueOutputPending;
1516            mDequeueOutputReplyID = 0;
1517            break;
1518        }
1519
1520        case kWhatReleaseOutputBuffer:
1521        {
1522            uint32_t replyID;
1523            CHECK(msg->senderAwaitsResponse(&replyID));
1524
1525            if (!isExecuting()) {
1526                PostReplyWithError(replyID, INVALID_OPERATION);
1527                break;
1528            } else if (mFlags & kFlagStickyError) {
1529                PostReplyWithError(replyID, getStickyError());
1530                break;
1531            }
1532
1533            status_t err = onReleaseOutputBuffer(msg);
1534
1535            PostReplyWithError(replyID, err);
1536            break;
1537        }
1538
1539        case kWhatSignalEndOfInputStream:
1540        {
1541            uint32_t replyID;
1542            CHECK(msg->senderAwaitsResponse(&replyID));
1543
1544            if (!isExecuting()) {
1545                PostReplyWithError(replyID, INVALID_OPERATION);
1546                break;
1547            } else if (mFlags & kFlagStickyError) {
1548                PostReplyWithError(replyID, getStickyError());
1549                break;
1550            }
1551
1552            mReplyID = replyID;
1553            mCodec->signalEndOfInputStream();
1554            break;
1555        }
1556
1557        case kWhatGetBuffers:
1558        {
1559            uint32_t replyID;
1560            CHECK(msg->senderAwaitsResponse(&replyID));
1561
1562            if (!isExecuting() || (mFlags & kFlagIsAsync)) {
1563                PostReplyWithError(replyID, INVALID_OPERATION);
1564                break;
1565            } else if (mFlags & kFlagStickyError) {
1566                PostReplyWithError(replyID, getStickyError());
1567                break;
1568            }
1569
1570            int32_t portIndex;
1571            CHECK(msg->findInt32("portIndex", &portIndex));
1572
1573            Vector<sp<ABuffer> > *dstBuffers;
1574            CHECK(msg->findPointer("buffers", (void **)&dstBuffers));
1575
1576            dstBuffers->clear();
1577            const Vector<BufferInfo> &srcBuffers = mPortBuffers[portIndex];
1578
1579            for (size_t i = 0; i < srcBuffers.size(); ++i) {
1580                const BufferInfo &info = srcBuffers.itemAt(i);
1581
1582                dstBuffers->push_back(
1583                        (portIndex == kPortIndexInput && mCrypto != NULL)
1584                                ? info.mEncryptedData : info.mData);
1585            }
1586
1587            (new AMessage)->postReply(replyID);
1588            break;
1589        }
1590
1591        case kWhatFlush:
1592        {
1593            uint32_t replyID;
1594            CHECK(msg->senderAwaitsResponse(&replyID));
1595
1596            if (!isExecuting()) {
1597                PostReplyWithError(replyID, INVALID_OPERATION);
1598                break;
1599            } else if (mFlags & kFlagStickyError) {
1600                PostReplyWithError(replyID, getStickyError());
1601                break;
1602            }
1603
1604            mReplyID = replyID;
1605            // TODO: skip flushing if already FLUSHED
1606            setState(FLUSHING);
1607
1608            mCodec->signalFlush();
1609            returnBuffersToCodec();
1610            break;
1611        }
1612
1613        case kWhatGetInputFormat:
1614        case kWhatGetOutputFormat:
1615        {
1616            sp<AMessage> format =
1617                (msg->what() == kWhatGetOutputFormat ? mOutputFormat : mInputFormat);
1618
1619            uint32_t replyID;
1620            CHECK(msg->senderAwaitsResponse(&replyID));
1621
1622            if ((mState != CONFIGURED && mState != STARTING &&
1623                 mState != STARTED && mState != FLUSHING &&
1624                 mState != FLUSHED)
1625                    || format == NULL) {
1626                PostReplyWithError(replyID, INVALID_OPERATION);
1627                break;
1628            } else if (mFlags & kFlagStickyError) {
1629                PostReplyWithError(replyID, getStickyError());
1630                break;
1631            }
1632
1633            sp<AMessage> response = new AMessage;
1634            response->setMessage("format", format);
1635            response->postReply(replyID);
1636            break;
1637        }
1638
1639        case kWhatRequestIDRFrame:
1640        {
1641            mCodec->signalRequestIDRFrame();
1642            break;
1643        }
1644
1645        case kWhatRequestActivityNotification:
1646        {
1647            CHECK(mActivityNotify == NULL);
1648            CHECK(msg->findMessage("notify", &mActivityNotify));
1649
1650            postActivityNotificationIfPossible();
1651            break;
1652        }
1653
1654        case kWhatGetName:
1655        {
1656            uint32_t replyID;
1657            CHECK(msg->senderAwaitsResponse(&replyID));
1658
1659            if (mComponentName.empty()) {
1660                PostReplyWithError(replyID, INVALID_OPERATION);
1661                break;
1662            }
1663
1664            sp<AMessage> response = new AMessage;
1665            response->setString("name", mComponentName.c_str());
1666            response->postReply(replyID);
1667            break;
1668        }
1669
1670        case kWhatSetParameters:
1671        {
1672            uint32_t replyID;
1673            CHECK(msg->senderAwaitsResponse(&replyID));
1674
1675            sp<AMessage> params;
1676            CHECK(msg->findMessage("params", &params));
1677
1678            status_t err = onSetParameters(params);
1679
1680            PostReplyWithError(replyID, err);
1681            break;
1682        }
1683
1684        default:
1685            TRESPASS();
1686    }
1687}
1688
1689void MediaCodec::extractCSD(const sp<AMessage> &format) {
1690    mCSD.clear();
1691
1692    size_t i = 0;
1693    for (;;) {
1694        sp<ABuffer> csd;
1695        if (!format->findBuffer(StringPrintf("csd-%u", i).c_str(), &csd)) {
1696            break;
1697        }
1698
1699        mCSD.push_back(csd);
1700        ++i;
1701    }
1702
1703    ALOGV("Found %zu pieces of codec specific data.", mCSD.size());
1704}
1705
1706status_t MediaCodec::queueCSDInputBuffer(size_t bufferIndex) {
1707    CHECK(!mCSD.empty());
1708
1709    const BufferInfo *info =
1710        &mPortBuffers[kPortIndexInput].itemAt(bufferIndex);
1711
1712    sp<ABuffer> csd = *mCSD.begin();
1713    mCSD.erase(mCSD.begin());
1714
1715    const sp<ABuffer> &codecInputData =
1716        (mCrypto != NULL) ? info->mEncryptedData : info->mData;
1717
1718    if (csd->size() > codecInputData->capacity()) {
1719        return -EINVAL;
1720    }
1721
1722    memcpy(codecInputData->data(), csd->data(), csd->size());
1723
1724    AString errorDetailMsg;
1725
1726    sp<AMessage> msg = new AMessage(kWhatQueueInputBuffer, id());
1727    msg->setSize("index", bufferIndex);
1728    msg->setSize("offset", 0);
1729    msg->setSize("size", csd->size());
1730    msg->setInt64("timeUs", 0ll);
1731    msg->setInt32("flags", BUFFER_FLAG_CODECCONFIG);
1732    msg->setPointer("errorDetailMsg", &errorDetailMsg);
1733
1734    return onQueueInputBuffer(msg);
1735}
1736
1737void MediaCodec::setState(State newState) {
1738    if (newState == INITIALIZED || newState == UNINITIALIZED) {
1739        delete mSoftRenderer;
1740        mSoftRenderer = NULL;
1741
1742        mCrypto.clear();
1743        setNativeWindow(NULL);
1744
1745        mInputFormat.clear();
1746        mOutputFormat.clear();
1747        mFlags &= ~kFlagOutputFormatChanged;
1748        mFlags &= ~kFlagOutputBuffersChanged;
1749        mFlags &= ~kFlagStickyError;
1750        mFlags &= ~kFlagIsEncoder;
1751        mFlags &= ~kFlagGatherCodecSpecificData;
1752        mFlags &= ~kFlagIsAsync;
1753        mStickyError = OK;
1754
1755        mActivityNotify.clear();
1756        mCallback.clear();
1757    }
1758
1759    if (newState == UNINITIALIZED) {
1760        // return any straggling buffers, e.g. if we got here on an error
1761        returnBuffersToCodec();
1762
1763        // The component is gone, mediaserver's probably back up already
1764        // but should definitely be back up should we try to instantiate
1765        // another component.. and the cycle continues.
1766        mFlags &= ~kFlagSawMediaServerDie;
1767    }
1768
1769    mState = newState;
1770
1771    cancelPendingDequeueOperations();
1772
1773    updateBatteryStat();
1774}
1775
1776void MediaCodec::returnBuffersToCodec() {
1777    returnBuffersToCodecOnPort(kPortIndexInput);
1778    returnBuffersToCodecOnPort(kPortIndexOutput);
1779}
1780
1781void MediaCodec::returnBuffersToCodecOnPort(int32_t portIndex) {
1782    CHECK(portIndex == kPortIndexInput || portIndex == kPortIndexOutput);
1783    Mutex::Autolock al(mBufferLock);
1784
1785    Vector<BufferInfo> *buffers = &mPortBuffers[portIndex];
1786
1787    for (size_t i = 0; i < buffers->size(); ++i) {
1788        BufferInfo *info = &buffers->editItemAt(i);
1789
1790        if (info->mNotify != NULL) {
1791            sp<AMessage> msg = info->mNotify;
1792            info->mNotify = NULL;
1793            info->mOwnedByClient = false;
1794
1795            if (portIndex == kPortIndexInput) {
1796                /* no error, just returning buffers */
1797                msg->setInt32("err", OK);
1798            }
1799            msg->post();
1800        }
1801    }
1802
1803    mAvailPortBuffers[portIndex].clear();
1804}
1805
1806size_t MediaCodec::updateBuffers(
1807        int32_t portIndex, const sp<AMessage> &msg) {
1808    CHECK(portIndex == kPortIndexInput || portIndex == kPortIndexOutput);
1809
1810    uint32_t bufferID;
1811    CHECK(msg->findInt32("buffer-id", (int32_t*)&bufferID));
1812
1813    Vector<BufferInfo> *buffers = &mPortBuffers[portIndex];
1814
1815    for (size_t i = 0; i < buffers->size(); ++i) {
1816        BufferInfo *info = &buffers->editItemAt(i);
1817
1818        if (info->mBufferID == bufferID) {
1819            CHECK(info->mNotify == NULL);
1820            CHECK(msg->findMessage("reply", &info->mNotify));
1821
1822            info->mFormat =
1823                (portIndex == kPortIndexInput) ? mInputFormat : mOutputFormat;
1824            mAvailPortBuffers[portIndex].push_back(i);
1825
1826            return i;
1827        }
1828    }
1829
1830    TRESPASS();
1831
1832    return 0;
1833}
1834
1835status_t MediaCodec::onQueueInputBuffer(const sp<AMessage> &msg) {
1836    size_t index;
1837    size_t offset;
1838    size_t size;
1839    int64_t timeUs;
1840    uint32_t flags;
1841    CHECK(msg->findSize("index", &index));
1842    CHECK(msg->findSize("offset", &offset));
1843    CHECK(msg->findInt64("timeUs", &timeUs));
1844    CHECK(msg->findInt32("flags", (int32_t *)&flags));
1845
1846    const CryptoPlugin::SubSample *subSamples;
1847    size_t numSubSamples;
1848    const uint8_t *key;
1849    const uint8_t *iv;
1850    CryptoPlugin::Mode mode = CryptoPlugin::kMode_Unencrypted;
1851
1852    // We allow the simpler queueInputBuffer API to be used even in
1853    // secure mode, by fabricating a single unencrypted subSample.
1854    CryptoPlugin::SubSample ss;
1855
1856    if (msg->findSize("size", &size)) {
1857        if (mCrypto != NULL) {
1858            ss.mNumBytesOfClearData = size;
1859            ss.mNumBytesOfEncryptedData = 0;
1860
1861            subSamples = &ss;
1862            numSubSamples = 1;
1863            key = NULL;
1864            iv = NULL;
1865        }
1866    } else {
1867        if (mCrypto == NULL) {
1868            return -EINVAL;
1869        }
1870
1871        CHECK(msg->findPointer("subSamples", (void **)&subSamples));
1872        CHECK(msg->findSize("numSubSamples", &numSubSamples));
1873        CHECK(msg->findPointer("key", (void **)&key));
1874        CHECK(msg->findPointer("iv", (void **)&iv));
1875
1876        int32_t tmp;
1877        CHECK(msg->findInt32("mode", &tmp));
1878
1879        mode = (CryptoPlugin::Mode)tmp;
1880
1881        size = 0;
1882        for (size_t i = 0; i < numSubSamples; ++i) {
1883            size += subSamples[i].mNumBytesOfClearData;
1884            size += subSamples[i].mNumBytesOfEncryptedData;
1885        }
1886    }
1887
1888    if (index >= mPortBuffers[kPortIndexInput].size()) {
1889        return -ERANGE;
1890    }
1891
1892    BufferInfo *info = &mPortBuffers[kPortIndexInput].editItemAt(index);
1893
1894    if (info->mNotify == NULL || !info->mOwnedByClient) {
1895        return -EACCES;
1896    }
1897
1898    if (offset + size > info->mData->capacity()) {
1899        return -EINVAL;
1900    }
1901
1902    sp<AMessage> reply = info->mNotify;
1903    info->mData->setRange(offset, size);
1904    info->mData->meta()->setInt64("timeUs", timeUs);
1905
1906    if (flags & BUFFER_FLAG_EOS) {
1907        info->mData->meta()->setInt32("eos", true);
1908    }
1909
1910    if (flags & BUFFER_FLAG_CODECCONFIG) {
1911        info->mData->meta()->setInt32("csd", true);
1912    }
1913
1914    if (mCrypto != NULL) {
1915        if (size > info->mEncryptedData->capacity()) {
1916            return -ERANGE;
1917        }
1918
1919        AString *errorDetailMsg;
1920        CHECK(msg->findPointer("errorDetailMsg", (void **)&errorDetailMsg));
1921
1922        ssize_t result = mCrypto->decrypt(
1923                (mFlags & kFlagIsSecure) != 0,
1924                key,
1925                iv,
1926                mode,
1927                info->mEncryptedData->base() + offset,
1928                subSamples,
1929                numSubSamples,
1930                info->mData->base(),
1931                errorDetailMsg);
1932
1933        if (result < 0) {
1934            return result;
1935        }
1936
1937        info->mData->setRange(0, result);
1938    }
1939
1940    // synchronization boundary for getBufferAndFormat
1941    {
1942        Mutex::Autolock al(mBufferLock);
1943        info->mOwnedByClient = false;
1944    }
1945    reply->setBuffer("buffer", info->mData);
1946    reply->post();
1947
1948    info->mNotify = NULL;
1949
1950    return OK;
1951}
1952
1953status_t MediaCodec::onReleaseOutputBuffer(const sp<AMessage> &msg) {
1954    size_t index;
1955    CHECK(msg->findSize("index", &index));
1956
1957    int32_t render;
1958    if (!msg->findInt32("render", &render)) {
1959        render = 0;
1960    }
1961
1962    if (!isExecuting()) {
1963        return -EINVAL;
1964    }
1965
1966    if (index >= mPortBuffers[kPortIndexOutput].size()) {
1967        return -ERANGE;
1968    }
1969
1970    BufferInfo *info = &mPortBuffers[kPortIndexOutput].editItemAt(index);
1971
1972    if (info->mNotify == NULL || !info->mOwnedByClient) {
1973        return -EACCES;
1974    }
1975
1976    // synchronization boundary for getBufferAndFormat
1977    {
1978        Mutex::Autolock al(mBufferLock);
1979        info->mOwnedByClient = false;
1980    }
1981
1982    if (render && info->mData != NULL && info->mData->size() != 0) {
1983        info->mNotify->setInt32("render", true);
1984
1985        int64_t timestampNs = 0;
1986        if (msg->findInt64("timestampNs", &timestampNs)) {
1987            info->mNotify->setInt64("timestampNs", timestampNs);
1988        } else {
1989            // TODO: it seems like we should use the timestamp
1990            // in the (media)buffer as it potentially came from
1991            // an input surface, but we did not propagate it prior to
1992            // API 20.  Perhaps check for target SDK version.
1993#if 0
1994            if (info->mData->meta()->findInt64("timeUs", &timestampNs)) {
1995                ALOGV("using buffer PTS of %" PRId64, timestampNs);
1996                timestampNs *= 1000;
1997            }
1998#endif
1999        }
2000
2001        if (mSoftRenderer != NULL) {
2002            mSoftRenderer->render(
2003                    info->mData->data(), info->mData->size(),
2004                    timestampNs, NULL, info->mFormat);
2005        }
2006    }
2007
2008    info->mNotify->post();
2009    info->mNotify = NULL;
2010
2011    return OK;
2012}
2013
2014ssize_t MediaCodec::dequeuePortBuffer(int32_t portIndex) {
2015    CHECK(portIndex == kPortIndexInput || portIndex == kPortIndexOutput);
2016
2017    List<size_t> *availBuffers = &mAvailPortBuffers[portIndex];
2018
2019    if (availBuffers->empty()) {
2020        return -EAGAIN;
2021    }
2022
2023    size_t index = *availBuffers->begin();
2024    availBuffers->erase(availBuffers->begin());
2025
2026    BufferInfo *info = &mPortBuffers[portIndex].editItemAt(index);
2027    CHECK(!info->mOwnedByClient);
2028    {
2029        Mutex::Autolock al(mBufferLock);
2030        info->mOwnedByClient = true;
2031
2032        // set image-data
2033        if (info->mFormat != NULL) {
2034            sp<ABuffer> imageData;
2035            if (info->mFormat->findBuffer("image-data", &imageData)) {
2036                info->mData->meta()->setBuffer("image-data", imageData);
2037            }
2038            int32_t left, top, right, bottom;
2039            if (info->mFormat->findRect("crop", &left, &top, &right, &bottom)) {
2040                info->mData->meta()->setRect("crop-rect", left, top, right, bottom);
2041            }
2042        }
2043    }
2044
2045    return index;
2046}
2047
2048status_t MediaCodec::setNativeWindow(
2049        const sp<Surface> &surfaceTextureClient) {
2050    status_t err;
2051
2052    if (mNativeWindow != NULL) {
2053        err = native_window_api_disconnect(
2054                mNativeWindow.get(), NATIVE_WINDOW_API_MEDIA);
2055
2056        if (err != OK) {
2057            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
2058                    strerror(-err), err);
2059        }
2060
2061        mNativeWindow.clear();
2062    }
2063
2064    if (surfaceTextureClient != NULL) {
2065        err = native_window_api_connect(
2066                surfaceTextureClient.get(), NATIVE_WINDOW_API_MEDIA);
2067
2068        if (err != OK) {
2069            ALOGE("native_window_api_connect returned an error: %s (%d)",
2070                    strerror(-err), err);
2071
2072            return err;
2073        }
2074
2075        mNativeWindow = surfaceTextureClient;
2076    }
2077
2078    return OK;
2079}
2080
2081void MediaCodec::onInputBufferAvailable() {
2082    int32_t index;
2083    while ((index = dequeuePortBuffer(kPortIndexInput)) >= 0) {
2084        sp<AMessage> msg = mCallback->dup();
2085        msg->setInt32("callbackID", CB_INPUT_AVAILABLE);
2086        msg->setInt32("index", index);
2087        msg->post();
2088    }
2089}
2090
2091void MediaCodec::onOutputBufferAvailable() {
2092    int32_t index;
2093    while ((index = dequeuePortBuffer(kPortIndexOutput)) >= 0) {
2094        const sp<ABuffer> &buffer =
2095            mPortBuffers[kPortIndexOutput].itemAt(index).mData;
2096        sp<AMessage> msg = mCallback->dup();
2097        msg->setInt32("callbackID", CB_OUTPUT_AVAILABLE);
2098        msg->setInt32("index", index);
2099        msg->setSize("offset", buffer->offset());
2100        msg->setSize("size", buffer->size());
2101
2102        int64_t timeUs;
2103        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2104
2105        msg->setInt64("timeUs", timeUs);
2106
2107        int32_t omxFlags;
2108        CHECK(buffer->meta()->findInt32("omxFlags", &omxFlags));
2109
2110        uint32_t flags = 0;
2111        if (omxFlags & OMX_BUFFERFLAG_SYNCFRAME) {
2112            flags |= BUFFER_FLAG_SYNCFRAME;
2113        }
2114        if (omxFlags & OMX_BUFFERFLAG_CODECCONFIG) {
2115            flags |= BUFFER_FLAG_CODECCONFIG;
2116        }
2117        if (omxFlags & OMX_BUFFERFLAG_EOS) {
2118            flags |= BUFFER_FLAG_EOS;
2119        }
2120
2121        msg->setInt32("flags", flags);
2122
2123        msg->post();
2124    }
2125}
2126
2127void MediaCodec::onError(status_t err, int32_t actionCode, const char *detail) {
2128    if (mCallback != NULL) {
2129        sp<AMessage> msg = mCallback->dup();
2130        msg->setInt32("callbackID", CB_ERROR);
2131        msg->setInt32("err", err);
2132        msg->setInt32("actionCode", actionCode);
2133
2134        if (detail != NULL) {
2135            msg->setString("detail", detail);
2136        }
2137
2138        msg->post();
2139    }
2140}
2141
2142void MediaCodec::onOutputFormatChanged() {
2143    if (mCallback != NULL) {
2144        sp<AMessage> msg = mCallback->dup();
2145        msg->setInt32("callbackID", CB_OUTPUT_FORMAT_CHANGED);
2146        msg->setMessage("format", mOutputFormat);
2147        msg->post();
2148    }
2149}
2150
2151
2152void MediaCodec::postActivityNotificationIfPossible() {
2153    if (mActivityNotify == NULL) {
2154        return;
2155    }
2156
2157    bool isErrorOrOutputChanged =
2158            (mFlags & (kFlagStickyError
2159                    | kFlagOutputBuffersChanged
2160                    | kFlagOutputFormatChanged));
2161
2162    if (isErrorOrOutputChanged
2163            || !mAvailPortBuffers[kPortIndexInput].empty()
2164            || !mAvailPortBuffers[kPortIndexOutput].empty()) {
2165        mActivityNotify->setInt32("input-buffers",
2166                mAvailPortBuffers[kPortIndexInput].size());
2167
2168        if (isErrorOrOutputChanged) {
2169            // we want consumer to dequeue as many times as it can
2170            mActivityNotify->setInt32("output-buffers", INT32_MAX);
2171        } else {
2172            mActivityNotify->setInt32("output-buffers",
2173                    mAvailPortBuffers[kPortIndexOutput].size());
2174        }
2175        mActivityNotify->post();
2176        mActivityNotify.clear();
2177    }
2178}
2179
2180status_t MediaCodec::setParameters(const sp<AMessage> &params) {
2181    sp<AMessage> msg = new AMessage(kWhatSetParameters, id());
2182    msg->setMessage("params", params);
2183
2184    sp<AMessage> response;
2185    return PostAndAwaitResponse(msg, &response);
2186}
2187
2188status_t MediaCodec::onSetParameters(const sp<AMessage> &params) {
2189    mCodec->signalSetParameters(params);
2190
2191    return OK;
2192}
2193
2194status_t MediaCodec::amendOutputFormatWithCodecSpecificData(
2195        const sp<ABuffer> &buffer) {
2196    AString mime;
2197    CHECK(mOutputFormat->findString("mime", &mime));
2198
2199    if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_VIDEO_AVC)) {
2200        // Codec specific data should be SPS and PPS in a single buffer,
2201        // each prefixed by a startcode (0x00 0x00 0x00 0x01).
2202        // We separate the two and put them into the output format
2203        // under the keys "csd-0" and "csd-1".
2204
2205        unsigned csdIndex = 0;
2206
2207        const uint8_t *data = buffer->data();
2208        size_t size = buffer->size();
2209
2210        const uint8_t *nalStart;
2211        size_t nalSize;
2212        while (getNextNALUnit(&data, &size, &nalStart, &nalSize, true) == OK) {
2213            sp<ABuffer> csd = new ABuffer(nalSize + 4);
2214            memcpy(csd->data(), "\x00\x00\x00\x01", 4);
2215            memcpy(csd->data() + 4, nalStart, nalSize);
2216
2217            mOutputFormat->setBuffer(
2218                    StringPrintf("csd-%u", csdIndex).c_str(), csd);
2219
2220            ++csdIndex;
2221        }
2222
2223        if (csdIndex != 2) {
2224            return ERROR_MALFORMED;
2225        }
2226    } else {
2227        // For everything else we just stash the codec specific data into
2228        // the output format as a single piece of csd under "csd-0".
2229        mOutputFormat->setBuffer("csd-0", buffer);
2230    }
2231
2232    return OK;
2233}
2234
2235void MediaCodec::updateBatteryStat() {
2236    if (mState == CONFIGURED && !mBatteryStatNotified) {
2237        AString mime;
2238        CHECK(mOutputFormat != NULL &&
2239                mOutputFormat->findString("mime", &mime));
2240
2241        mIsVideo = mime.startsWithIgnoreCase("video/");
2242
2243        BatteryNotifier& notifier(BatteryNotifier::getInstance());
2244
2245        if (mIsVideo) {
2246            notifier.noteStartVideo();
2247        } else {
2248            notifier.noteStartAudio();
2249        }
2250
2251        mBatteryStatNotified = true;
2252    } else if (mState == UNINITIALIZED && mBatteryStatNotified) {
2253        BatteryNotifier& notifier(BatteryNotifier::getInstance());
2254
2255        if (mIsVideo) {
2256            notifier.noteStopVideo();
2257        } else {
2258            notifier.noteStopAudio();
2259        }
2260
2261        mBatteryStatNotified = false;
2262    }
2263}
2264
2265}  // namespace android
2266