MediaPlayerService.cpp revision 6cb337596796996c3095dc8017eb36beba00dab2 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <sys/time.h>
27#include <dirent.h>
28#include <unistd.h>
29
30#include <string.h>
31
32#include <cutils/atomic.h>
33#include <cutils/properties.h> // for property_get
34
35#include <utils/misc.h>
36
37#include <binder/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Timers.h>
46#include <utils/Vector.h>
47
48#include <media/AudioPolicyHelper.h>
49#include <media/IMediaHTTPService.h>
50#include <media/IRemoteDisplay.h>
51#include <media/IRemoteDisplayClient.h>
52#include <media/MediaPlayerInterface.h>
53#include <media/mediarecorder.h>
54#include <media/MediaMetadataRetrieverInterface.h>
55#include <media/Metadata.h>
56#include <media/AudioTrack.h>
57#include <media/MemoryLeakTrackUtil.h>
58#include <media/stagefright/MediaCodecList.h>
59#include <media/stagefright/MediaErrors.h>
60#include <media/stagefright/Utils.h>
61#include <media/stagefright/foundation/ADebug.h>
62#include <media/stagefright/foundation/ALooperRoster.h>
63#include <mediautils/BatteryNotifier.h>
64
65#include <memunreachable/memunreachable.h>
66#include <system/audio.h>
67
68#include <private/android_filesystem_config.h>
69
70#include "ActivityManager.h"
71#include "MediaRecorderClient.h"
72#include "MediaPlayerService.h"
73#include "MetadataRetrieverClient.h"
74#include "MediaPlayerFactory.h"
75
76#include "TestPlayerStub.h"
77#include "nuplayer/NuPlayerDriver.h"
78
79#include <OMX.h>
80
81#include "HDCP.h"
82#include "HTTPBase.h"
83#include "RemoteDisplay.h"
84
85namespace {
86using android::media::Metadata;
87using android::status_t;
88using android::OK;
89using android::BAD_VALUE;
90using android::NOT_ENOUGH_DATA;
91using android::Parcel;
92
93// Max number of entries in the filter.
94const int kMaxFilterSize = 64;  // I pulled that out of thin air.
95
96const float kMaxRequiredSpeed = 8.0f; // for PCM tracks allow up to 8x speedup.
97
98// FIXME: Move all the metadata related function in the Metadata.cpp
99
100
101// Unmarshall a filter from a Parcel.
102// Filter format in a parcel:
103//
104//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       number of entries (n)                   |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108// |                       metadata type 1                         |
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       metadata type 2                         |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112//  ....
113// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
114// |                       metadata type n                         |
115// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
116//
117// @param p Parcel that should start with a filter.
118// @param[out] filter On exit contains the list of metadata type to be
119//                    filtered.
120// @param[out] status On exit contains the status code to be returned.
121// @return true if the parcel starts with a valid filter.
122bool unmarshallFilter(const Parcel& p,
123                      Metadata::Filter *filter,
124                      status_t *status)
125{
126    int32_t val;
127    if (p.readInt32(&val) != OK)
128    {
129        ALOGE("Failed to read filter's length");
130        *status = NOT_ENOUGH_DATA;
131        return false;
132    }
133
134    if( val > kMaxFilterSize || val < 0)
135    {
136        ALOGE("Invalid filter len %d", val);
137        *status = BAD_VALUE;
138        return false;
139    }
140
141    const size_t num = val;
142
143    filter->clear();
144    filter->setCapacity(num);
145
146    size_t size = num * sizeof(Metadata::Type);
147
148
149    if (p.dataAvail() < size)
150    {
151        ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail());
152        *status = NOT_ENOUGH_DATA;
153        return false;
154    }
155
156    const Metadata::Type *data =
157            static_cast<const Metadata::Type*>(p.readInplace(size));
158
159    if (NULL == data)
160    {
161        ALOGE("Filter had no data");
162        *status = BAD_VALUE;
163        return false;
164    }
165
166    // TODO: The stl impl of vector would be more efficient here
167    // because it degenerates into a memcpy on pod types. Try to
168    // replace later or use stl::set.
169    for (size_t i = 0; i < num; ++i)
170    {
171        filter->add(*data);
172        ++data;
173    }
174    *status = OK;
175    return true;
176}
177
178// @param filter Of metadata type.
179// @param val To be searched.
180// @return true if a match was found.
181bool findMetadata(const Metadata::Filter& filter, const int32_t val)
182{
183    // Deal with empty and ANY right away
184    if (filter.isEmpty()) return false;
185    if (filter[0] == Metadata::kAny) return true;
186
187    return filter.indexOf(val) >= 0;
188}
189
190}  // anonymous namespace
191
192
193namespace {
194using android::Parcel;
195using android::String16;
196
197// marshalling tag indicating flattened utf16 tags
198// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
199const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
200
201// Audio attributes format in a parcel:
202//
203//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
204// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
205// |                       usage                                   |
206// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207// |                       content_type                            |
208// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209// |                       source                                  |
210// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
211// |                       flags                                   |
212// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
213// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
214// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
215// |                       flattened tags in UTF16                 |
216// |                         ...                                   |
217// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
218//
219// @param p Parcel that contains audio attributes.
220// @param[out] attributes On exit points to an initialized audio_attributes_t structure
221// @param[out] status On exit contains the status code to be returned.
222void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
223{
224    attributes->usage = (audio_usage_t) parcel.readInt32();
225    attributes->content_type = (audio_content_type_t) parcel.readInt32();
226    attributes->source = (audio_source_t) parcel.readInt32();
227    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
228    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
229    if (hasFlattenedTag) {
230        // the tags are UTF16, convert to UTF8
231        String16 tags = parcel.readString16();
232        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
233        if (realTagSize <= 0) {
234            strcpy(attributes->tags, "");
235        } else {
236            // copy the flattened string into the attributes as the destination for the conversion:
237            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
238            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
239                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
240            utf16_to_utf8(tags.string(), tagSize, attributes->tags,
241                    sizeof(attributes->tags) / sizeof(attributes->tags[0]));
242        }
243    } else {
244        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
245        strcpy(attributes->tags, "");
246    }
247}
248} // anonymous namespace
249
250
251namespace android {
252
253extern ALooperRoster gLooperRoster;
254
255
256static bool checkPermission(const char* permissionString) {
257    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
258    bool ok = checkCallingPermission(String16(permissionString));
259    if (!ok) ALOGE("Request requires %s", permissionString);
260    return ok;
261}
262
263// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
264/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
265/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
266
267void MediaPlayerService::instantiate() {
268    defaultServiceManager()->addService(
269            String16("media.player"), new MediaPlayerService());
270}
271
272MediaPlayerService::MediaPlayerService()
273{
274    ALOGV("MediaPlayerService created");
275    mNextConnId = 1;
276
277    mBatteryAudio.refCount = 0;
278    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
279        mBatteryAudio.deviceOn[i] = 0;
280        mBatteryAudio.lastTime[i] = 0;
281        mBatteryAudio.totalTime[i] = 0;
282    }
283    // speaker is on by default
284    mBatteryAudio.deviceOn[SPEAKER] = 1;
285
286    // reset battery stats
287    // if the mediaserver has crashed, battery stats could be left
288    // in bad state, reset the state upon service start.
289    BatteryNotifier::getInstance().noteResetVideo();
290
291    MediaPlayerFactory::registerBuiltinFactories();
292}
293
294MediaPlayerService::~MediaPlayerService()
295{
296    ALOGV("MediaPlayerService destroyed");
297}
298
299sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
300{
301    pid_t pid = IPCThreadState::self()->getCallingPid();
302    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
303    wp<MediaRecorderClient> w = recorder;
304    Mutex::Autolock lock(mLock);
305    mMediaRecorderClients.add(w);
306    ALOGV("Create new media recorder client from pid %d", pid);
307    return recorder;
308}
309
310void MediaPlayerService::removeMediaRecorderClient(const wp<MediaRecorderClient>& client)
311{
312    Mutex::Autolock lock(mLock);
313    mMediaRecorderClients.remove(client);
314    ALOGV("Delete media recorder client");
315}
316
317sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
318{
319    pid_t pid = IPCThreadState::self()->getCallingPid();
320    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
321    ALOGV("Create new media retriever from pid %d", pid);
322    return retriever;
323}
324
325sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
326        audio_session_t audioSessionId)
327{
328    pid_t pid = IPCThreadState::self()->getCallingPid();
329    int32_t connId = android_atomic_inc(&mNextConnId);
330
331    sp<Client> c = new Client(
332            this, pid, connId, client, audioSessionId,
333            IPCThreadState::self()->getCallingUid());
334
335    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
336         IPCThreadState::self()->getCallingUid());
337
338    wp<Client> w = c;
339    {
340        Mutex::Autolock lock(mLock);
341        mClients.add(w);
342    }
343    return c;
344}
345
346sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
347    return MediaCodecList::getLocalInstance();
348}
349
350sp<IOMX> MediaPlayerService::getOMX() {
351    ALOGI("MediaPlayerService::getOMX");
352    Mutex::Autolock autoLock(mLock);
353
354    if (mOMX.get() == NULL) {
355        mOMX = new OMX;
356    }
357
358    return mOMX;
359}
360
361sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
362    return new HDCP(createEncryptionModule);
363}
364
365sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
366        const String16 &opPackageName,
367        const sp<IRemoteDisplayClient>& client, const String8& iface) {
368    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
369        return NULL;
370    }
371
372    return new RemoteDisplay(opPackageName, client, iface.string());
373}
374
375status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
376{
377    const size_t SIZE = 256;
378    char buffer[SIZE];
379    String8 result;
380
381    result.append(" AudioOutput\n");
382    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
383            mStreamType, mLeftVolume, mRightVolume);
384    result.append(buffer);
385    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
386            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
387    result.append(buffer);
388    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
389            mAuxEffectId, mSendLevel);
390    result.append(buffer);
391
392    ::write(fd, result.string(), result.size());
393    if (mTrack != 0) {
394        mTrack->dump(fd, args);
395    }
396    return NO_ERROR;
397}
398
399status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
400{
401    const size_t SIZE = 256;
402    char buffer[SIZE];
403    String8 result;
404    result.append(" Client\n");
405    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
406            mPid, mConnId, mStatus, mLoop?"true": "false");
407    result.append(buffer);
408    write(fd, result.string(), result.size());
409    if (mPlayer != NULL) {
410        mPlayer->dump(fd, args);
411    }
412    if (mAudioOutput != 0) {
413        mAudioOutput->dump(fd, args);
414    }
415    write(fd, "\n", 1);
416    return NO_ERROR;
417}
418
419/**
420 * The only arguments this understands right now are -c, -von and -voff,
421 * which are parsed by ALooperRoster::dump()
422 */
423status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
424{
425    const size_t SIZE = 256;
426    char buffer[SIZE];
427    String8 result;
428    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
429    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
430
431    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
432        snprintf(buffer, SIZE, "Permission Denial: "
433                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
434                IPCThreadState::self()->getCallingPid(),
435                IPCThreadState::self()->getCallingUid());
436        result.append(buffer);
437    } else {
438        Mutex::Autolock lock(mLock);
439        for (int i = 0, n = mClients.size(); i < n; ++i) {
440            sp<Client> c = mClients[i].promote();
441            if (c != 0) c->dump(fd, args);
442            clients.add(c);
443        }
444        if (mMediaRecorderClients.size() == 0) {
445                result.append(" No media recorder client\n\n");
446        } else {
447            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
448                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
449                if (c != 0) {
450                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
451                    result.append(buffer);
452                    write(fd, result.string(), result.size());
453                    result = "\n";
454                    c->dump(fd, args);
455                    mediaRecorderClients.add(c);
456                }
457            }
458        }
459
460        result.append(" Files opened and/or mapped:\n");
461        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
462        FILE *f = fopen(buffer, "r");
463        if (f) {
464            while (!feof(f)) {
465                fgets(buffer, SIZE, f);
466                if (strstr(buffer, " /storage/") ||
467                    strstr(buffer, " /system/sounds/") ||
468                    strstr(buffer, " /data/") ||
469                    strstr(buffer, " /system/media/")) {
470                    result.append("  ");
471                    result.append(buffer);
472                }
473            }
474            fclose(f);
475        } else {
476            result.append("couldn't open ");
477            result.append(buffer);
478            result.append("\n");
479        }
480
481        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
482        DIR *d = opendir(buffer);
483        if (d) {
484            struct dirent *ent;
485            while((ent = readdir(d)) != NULL) {
486                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
487                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
488                    struct stat s;
489                    if (lstat(buffer, &s) == 0) {
490                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
491                            char linkto[256];
492                            int len = readlink(buffer, linkto, sizeof(linkto));
493                            if(len > 0) {
494                                if(len > 255) {
495                                    linkto[252] = '.';
496                                    linkto[253] = '.';
497                                    linkto[254] = '.';
498                                    linkto[255] = 0;
499                                } else {
500                                    linkto[len] = 0;
501                                }
502                                if (strstr(linkto, "/storage/") == linkto ||
503                                    strstr(linkto, "/system/sounds/") == linkto ||
504                                    strstr(linkto, "/data/") == linkto ||
505                                    strstr(linkto, "/system/media/") == linkto) {
506                                    result.append("  ");
507                                    result.append(buffer);
508                                    result.append(" -> ");
509                                    result.append(linkto);
510                                    result.append("\n");
511                                }
512                            }
513                        } else {
514                            result.append("  unexpected type for ");
515                            result.append(buffer);
516                            result.append("\n");
517                        }
518                    }
519                }
520            }
521            closedir(d);
522        } else {
523            result.append("couldn't open ");
524            result.append(buffer);
525            result.append("\n");
526        }
527
528        gLooperRoster.dump(fd, args);
529
530        bool dumpMem = false;
531        bool unreachableMemory = false;
532        for (size_t i = 0; i < args.size(); i++) {
533            if (args[i] == String16("-m")) {
534                dumpMem = true;
535            } else if (args[i] == String16("--unreachable")) {
536                unreachableMemory = true;
537            }
538        }
539        if (dumpMem) {
540            result.append("\nDumping memory:\n");
541            std::string s = dumpMemoryAddresses(100 /* limit */);
542            result.append(s.c_str(), s.size());
543        }
544        if (unreachableMemory) {
545            result.append("\nDumping unreachable memory:\n");
546            // TODO - should limit be an argument parameter?
547            std::string s = GetUnreachableMemoryString(true /* contents */, 10000 /* limit */);
548            result.append(s.c_str(), s.size());
549        }
550    }
551    write(fd, result.string(), result.size());
552    return NO_ERROR;
553}
554
555void MediaPlayerService::removeClient(const wp<Client>& client)
556{
557    Mutex::Autolock lock(mLock);
558    mClients.remove(client);
559}
560
561bool MediaPlayerService::hasClient(wp<Client> client)
562{
563    Mutex::Autolock lock(mLock);
564    return mClients.indexOf(client) != NAME_NOT_FOUND;
565}
566
567MediaPlayerService::Client::Client(
568        const sp<MediaPlayerService>& service, pid_t pid,
569        int32_t connId, const sp<IMediaPlayerClient>& client,
570        audio_session_t audioSessionId, uid_t uid)
571{
572    ALOGV("Client(%d) constructor", connId);
573    mPid = pid;
574    mConnId = connId;
575    mService = service;
576    mClient = client;
577    mLoop = false;
578    mStatus = NO_INIT;
579    mAudioSessionId = audioSessionId;
580    mUid = uid;
581    mRetransmitEndpointValid = false;
582    mAudioAttributes = NULL;
583
584#if CALLBACK_ANTAGONIZER
585    ALOGD("create Antagonizer");
586    mAntagonizer = new Antagonizer(notify, this);
587#endif
588}
589
590MediaPlayerService::Client::~Client()
591{
592    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
593    mAudioOutput.clear();
594    wp<Client> client(this);
595    disconnect();
596    mService->removeClient(client);
597    if (mAudioAttributes != NULL) {
598        free(mAudioAttributes);
599    }
600}
601
602void MediaPlayerService::Client::disconnect()
603{
604    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
605    // grab local reference and clear main reference to prevent future
606    // access to object
607    sp<MediaPlayerBase> p;
608    {
609        Mutex::Autolock l(mLock);
610        p = mPlayer;
611        mClient.clear();
612    }
613
614    mPlayer.clear();
615
616    // clear the notification to prevent callbacks to dead client
617    // and reset the player. We assume the player will serialize
618    // access to itself if necessary.
619    if (p != 0) {
620        p->setNotifyCallback(0, 0);
621#if CALLBACK_ANTAGONIZER
622        ALOGD("kill Antagonizer");
623        mAntagonizer->kill();
624#endif
625        p->reset();
626    }
627
628    disconnectNativeWindow();
629
630    IPCThreadState::self()->flushCommands();
631}
632
633sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
634{
635    // determine if we have the right player type
636    sp<MediaPlayerBase> p = mPlayer;
637    if ((p != NULL) && (p->playerType() != playerType)) {
638        ALOGV("delete player");
639        p.clear();
640    }
641    if (p == NULL) {
642        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
643    }
644
645    if (p != NULL) {
646        p->setUID(mUid);
647    }
648
649    return p;
650}
651
652MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
653        const sp<IBinder>& service,
654        const sp<MediaPlayerBase>& listener,
655        int which) {
656    mService = service;
657    mListener = listener;
658    mWhich = which;
659}
660
661MediaPlayerService::Client::ServiceDeathNotifier::~ServiceDeathNotifier() {
662    mService->unlinkToDeath(this);
663}
664
665void MediaPlayerService::Client::ServiceDeathNotifier::binderDied(const wp<IBinder>& /*who*/) {
666    sp<MediaPlayerBase> listener = mListener.promote();
667    if (listener != NULL) {
668        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
669    } else {
670        ALOGW("listener for process %d death is gone", mWhich);
671    }
672}
673
674sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
675        player_type playerType)
676{
677    ALOGV("player type = %d", playerType);
678
679    // create the right type of player
680    sp<MediaPlayerBase> p = createPlayer(playerType);
681    if (p == NULL) {
682        return p;
683    }
684
685    sp<IServiceManager> sm = defaultServiceManager();
686    sp<IBinder> binder = sm->getService(String16("media.extractor"));
687    if (binder == NULL) {
688        ALOGE("extractor service not available");
689        return NULL;
690    }
691    mExtractorDeathListener = new ServiceDeathNotifier(binder, p, MEDIAEXTRACTOR_PROCESS_DEATH);
692    binder->linkToDeath(mExtractorDeathListener);
693
694    binder = sm->getService(String16("media.codec"));
695    if (binder == NULL) {
696        ALOGE("codec service not available");
697        return NULL;
698    }
699    mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
700    binder->linkToDeath(mCodecDeathListener);
701
702    if (!p->hardwareOutput()) {
703        Mutex::Autolock l(mLock);
704        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
705                mPid, mAudioAttributes);
706        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
707    }
708
709    return p;
710}
711
712void MediaPlayerService::Client::setDataSource_post(
713        const sp<MediaPlayerBase>& p,
714        status_t status)
715{
716    ALOGV(" setDataSource");
717    mStatus = status;
718    if (mStatus != OK) {
719        ALOGE("  error: %d", mStatus);
720        return;
721    }
722
723    // Set the re-transmission endpoint if one was chosen.
724    if (mRetransmitEndpointValid) {
725        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
726        if (mStatus != NO_ERROR) {
727            ALOGE("setRetransmitEndpoint error: %d", mStatus);
728        }
729    }
730
731    if (mStatus == OK) {
732        mPlayer = p;
733    }
734}
735
736status_t MediaPlayerService::Client::setDataSource(
737        const sp<IMediaHTTPService> &httpService,
738        const char *url,
739        const KeyedVector<String8, String8> *headers)
740{
741    ALOGV("setDataSource(%s)", url);
742    if (url == NULL)
743        return UNKNOWN_ERROR;
744
745    if ((strncmp(url, "http://", 7) == 0) ||
746        (strncmp(url, "https://", 8) == 0) ||
747        (strncmp(url, "rtsp://", 7) == 0)) {
748        if (!checkPermission("android.permission.INTERNET")) {
749            return PERMISSION_DENIED;
750        }
751    }
752
753    if (strncmp(url, "content://", 10) == 0) {
754        // get a filedescriptor for the content Uri and
755        // pass it to the setDataSource(fd) method
756
757        String16 url16(url);
758        int fd = android::openContentProviderFile(url16);
759        if (fd < 0)
760        {
761            ALOGE("Couldn't open fd for %s", url);
762            return UNKNOWN_ERROR;
763        }
764        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
765        close(fd);
766        return mStatus;
767    } else {
768        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
769        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
770        if (p == NULL) {
771            return NO_INIT;
772        }
773
774        setDataSource_post(p, p->setDataSource(httpService, url, headers));
775        return mStatus;
776    }
777}
778
779status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
780{
781    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
782            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
783    struct stat sb;
784    int ret = fstat(fd, &sb);
785    if (ret != 0) {
786        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
787        return UNKNOWN_ERROR;
788    }
789
790    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
791    ALOGV("st_mode = %u", sb.st_mode);
792    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
793    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
794    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
795
796    if (offset >= sb.st_size) {
797        ALOGE("offset error");
798        return UNKNOWN_ERROR;
799    }
800    if (offset + length > sb.st_size) {
801        length = sb.st_size - offset;
802        ALOGV("calculated length = %lld", (long long)length);
803    }
804
805    player_type playerType = MediaPlayerFactory::getPlayerType(this,
806                                                               fd,
807                                                               offset,
808                                                               length);
809    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
810    if (p == NULL) {
811        return NO_INIT;
812    }
813
814    // now set data source
815    setDataSource_post(p, p->setDataSource(fd, offset, length));
816    return mStatus;
817}
818
819status_t MediaPlayerService::Client::setDataSource(
820        const sp<IStreamSource> &source) {
821    // create the right type of player
822    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
823    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
824    if (p == NULL) {
825        return NO_INIT;
826    }
827
828    // now set data source
829    setDataSource_post(p, p->setDataSource(source));
830    return mStatus;
831}
832
833status_t MediaPlayerService::Client::setDataSource(
834        const sp<IDataSource> &source) {
835    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
836    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
837    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
838    if (p == NULL) {
839        return NO_INIT;
840    }
841    // now set data source
842    setDataSource_post(p, p->setDataSource(dataSource));
843    return mStatus;
844}
845
846void MediaPlayerService::Client::disconnectNativeWindow() {
847    if (mConnectedWindow != NULL) {
848        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
849                NATIVE_WINDOW_API_MEDIA);
850
851        if (err != OK) {
852            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
853                    strerror(-err), err);
854        }
855    }
856    mConnectedWindow.clear();
857}
858
859status_t MediaPlayerService::Client::setVideoSurfaceTexture(
860        const sp<IGraphicBufferProducer>& bufferProducer)
861{
862    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
863    sp<MediaPlayerBase> p = getPlayer();
864    if (p == 0) return UNKNOWN_ERROR;
865
866    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
867    if (mConnectedWindowBinder == binder) {
868        return OK;
869    }
870
871    sp<ANativeWindow> anw;
872    if (bufferProducer != NULL) {
873        anw = new Surface(bufferProducer, true /* controlledByApp */);
874        status_t err = native_window_api_connect(anw.get(),
875                NATIVE_WINDOW_API_MEDIA);
876
877        if (err != OK) {
878            ALOGE("setVideoSurfaceTexture failed: %d", err);
879            // Note that we must do the reset before disconnecting from the ANW.
880            // Otherwise queue/dequeue calls could be made on the disconnected
881            // ANW, which may result in errors.
882            reset();
883
884            disconnectNativeWindow();
885
886            return err;
887        }
888    }
889
890    // Note that we must set the player's new GraphicBufferProducer before
891    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
892    // on the disconnected ANW, which may result in errors.
893    status_t err = p->setVideoSurfaceTexture(bufferProducer);
894
895    disconnectNativeWindow();
896
897    mConnectedWindow = anw;
898
899    if (err == OK) {
900        mConnectedWindowBinder = binder;
901    } else {
902        disconnectNativeWindow();
903    }
904
905    return err;
906}
907
908status_t MediaPlayerService::Client::invoke(const Parcel& request,
909                                            Parcel *reply)
910{
911    sp<MediaPlayerBase> p = getPlayer();
912    if (p == NULL) return UNKNOWN_ERROR;
913    return p->invoke(request, reply);
914}
915
916// This call doesn't need to access the native player.
917status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
918{
919    status_t status;
920    media::Metadata::Filter allow, drop;
921
922    if (unmarshallFilter(filter, &allow, &status) &&
923        unmarshallFilter(filter, &drop, &status)) {
924        Mutex::Autolock lock(mLock);
925
926        mMetadataAllow = allow;
927        mMetadataDrop = drop;
928    }
929    return status;
930}
931
932status_t MediaPlayerService::Client::getMetadata(
933        bool update_only, bool /*apply_filter*/, Parcel *reply)
934{
935    sp<MediaPlayerBase> player = getPlayer();
936    if (player == 0) return UNKNOWN_ERROR;
937
938    status_t status;
939    // Placeholder for the return code, updated by the caller.
940    reply->writeInt32(-1);
941
942    media::Metadata::Filter ids;
943
944    // We don't block notifications while we fetch the data. We clear
945    // mMetadataUpdated first so we don't lose notifications happening
946    // during the rest of this call.
947    {
948        Mutex::Autolock lock(mLock);
949        if (update_only) {
950            ids = mMetadataUpdated;
951        }
952        mMetadataUpdated.clear();
953    }
954
955    media::Metadata metadata(reply);
956
957    metadata.appendHeader();
958    status = player->getMetadata(ids, reply);
959
960    if (status != OK) {
961        metadata.resetParcel();
962        ALOGE("getMetadata failed %d", status);
963        return status;
964    }
965
966    // FIXME: Implement filtering on the result. Not critical since
967    // filtering takes place on the update notifications already. This
968    // would be when all the metadata are fetch and a filter is set.
969
970    // Everything is fine, update the metadata length.
971    metadata.updateLength();
972    return OK;
973}
974
975status_t MediaPlayerService::Client::setBufferingSettings(
976        const BufferingSettings& buffering)
977{
978    ALOGV("[%d] setBufferingSettings{%s}",
979            mConnId, buffering.toString().string());
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    return p->setBufferingSettings(buffering);
983}
984
985status_t MediaPlayerService::Client::getDefaultBufferingSettings(
986        BufferingSettings* buffering /* nonnull */)
987{
988    sp<MediaPlayerBase> p = getPlayer();
989    // TODO: create mPlayer on demand.
990    if (p == 0) return UNKNOWN_ERROR;
991    status_t ret = p->getDefaultBufferingSettings(buffering);
992    if (ret == NO_ERROR) {
993        ALOGV("[%d] getDefaultBufferingSettings{%s}",
994                mConnId, buffering->toString().string());
995    } else {
996        ALOGV("[%d] getDefaultBufferingSettings returned %d", mConnId, ret);
997    }
998    return ret;
999}
1000
1001status_t MediaPlayerService::Client::prepareAsync()
1002{
1003    ALOGV("[%d] prepareAsync", mConnId);
1004    sp<MediaPlayerBase> p = getPlayer();
1005    if (p == 0) return UNKNOWN_ERROR;
1006    status_t ret = p->prepareAsync();
1007#if CALLBACK_ANTAGONIZER
1008    ALOGD("start Antagonizer");
1009    if (ret == NO_ERROR) mAntagonizer->start();
1010#endif
1011    return ret;
1012}
1013
1014status_t MediaPlayerService::Client::start()
1015{
1016    ALOGV("[%d] start", mConnId);
1017    sp<MediaPlayerBase> p = getPlayer();
1018    if (p == 0) return UNKNOWN_ERROR;
1019    p->setLooping(mLoop);
1020    return p->start();
1021}
1022
1023status_t MediaPlayerService::Client::stop()
1024{
1025    ALOGV("[%d] stop", mConnId);
1026    sp<MediaPlayerBase> p = getPlayer();
1027    if (p == 0) return UNKNOWN_ERROR;
1028    return p->stop();
1029}
1030
1031status_t MediaPlayerService::Client::pause()
1032{
1033    ALOGV("[%d] pause", mConnId);
1034    sp<MediaPlayerBase> p = getPlayer();
1035    if (p == 0) return UNKNOWN_ERROR;
1036    return p->pause();
1037}
1038
1039status_t MediaPlayerService::Client::isPlaying(bool* state)
1040{
1041    *state = false;
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    *state = p->isPlaying();
1045    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1046    return NO_ERROR;
1047}
1048
1049status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1050{
1051    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1052            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1053    sp<MediaPlayerBase> p = getPlayer();
1054    if (p == 0) return UNKNOWN_ERROR;
1055    return p->setPlaybackSettings(rate);
1056}
1057
1058status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1059{
1060    sp<MediaPlayerBase> p = getPlayer();
1061    if (p == 0) return UNKNOWN_ERROR;
1062    status_t ret = p->getPlaybackSettings(rate);
1063    if (ret == NO_ERROR) {
1064        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1065                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1066    } else {
1067        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1068    }
1069    return ret;
1070}
1071
1072status_t MediaPlayerService::Client::setSyncSettings(
1073        const AVSyncSettings& sync, float videoFpsHint)
1074{
1075    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1076            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1077    sp<MediaPlayerBase> p = getPlayer();
1078    if (p == 0) return UNKNOWN_ERROR;
1079    return p->setSyncSettings(sync, videoFpsHint);
1080}
1081
1082status_t MediaPlayerService::Client::getSyncSettings(
1083        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1084{
1085    sp<MediaPlayerBase> p = getPlayer();
1086    if (p == 0) return UNKNOWN_ERROR;
1087    status_t ret = p->getSyncSettings(sync, videoFps);
1088    if (ret == NO_ERROR) {
1089        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1090                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1091    } else {
1092        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1093    }
1094    return ret;
1095}
1096
1097status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1098{
1099    ALOGV("getCurrentPosition");
1100    sp<MediaPlayerBase> p = getPlayer();
1101    if (p == 0) return UNKNOWN_ERROR;
1102    status_t ret = p->getCurrentPosition(msec);
1103    if (ret == NO_ERROR) {
1104        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1105    } else {
1106        ALOGE("getCurrentPosition returned %d", ret);
1107    }
1108    return ret;
1109}
1110
1111status_t MediaPlayerService::Client::getDuration(int *msec)
1112{
1113    ALOGV("getDuration");
1114    sp<MediaPlayerBase> p = getPlayer();
1115    if (p == 0) return UNKNOWN_ERROR;
1116    status_t ret = p->getDuration(msec);
1117    if (ret == NO_ERROR) {
1118        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1119    } else {
1120        ALOGE("getDuration returned %d", ret);
1121    }
1122    return ret;
1123}
1124
1125status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1126    ALOGV("setNextPlayer");
1127    Mutex::Autolock l(mLock);
1128    sp<Client> c = static_cast<Client*>(player.get());
1129    if (c != NULL && !mService->hasClient(c)) {
1130      return BAD_VALUE;
1131    }
1132
1133    mNextClient = c;
1134
1135    if (c != NULL) {
1136        if (mAudioOutput != NULL) {
1137            mAudioOutput->setNextOutput(c->mAudioOutput);
1138        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1139            ALOGE("no current audio output");
1140        }
1141
1142        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1143            mPlayer->setNextPlayer(mNextClient->getPlayer());
1144        }
1145    }
1146
1147    return OK;
1148}
1149
1150status_t MediaPlayerService::Client::seekTo(int msec, MediaPlayerSeekMode mode)
1151{
1152    ALOGV("[%d] seekTo(%d, %d)", mConnId, msec, mode);
1153    sp<MediaPlayerBase> p = getPlayer();
1154    if (p == 0) return UNKNOWN_ERROR;
1155    return p->seekTo(msec, mode);
1156}
1157
1158status_t MediaPlayerService::Client::reset()
1159{
1160    ALOGV("[%d] reset", mConnId);
1161    mRetransmitEndpointValid = false;
1162    sp<MediaPlayerBase> p = getPlayer();
1163    if (p == 0) return UNKNOWN_ERROR;
1164    return p->reset();
1165}
1166
1167status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1168{
1169    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1170    // TODO: for hardware output, call player instead
1171    Mutex::Autolock l(mLock);
1172    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1173    return NO_ERROR;
1174}
1175
1176status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1177{
1178    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1179    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1180    if (mAudioAttributes == NULL) {
1181        return NO_MEMORY;
1182    }
1183    unmarshallAudioAttributes(parcel, mAudioAttributes);
1184
1185    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1186            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1187            mAudioAttributes->tags);
1188
1189    if (mAudioOutput != 0) {
1190        mAudioOutput->setAudioAttributes(mAudioAttributes);
1191    }
1192    return NO_ERROR;
1193}
1194
1195status_t MediaPlayerService::Client::setLooping(int loop)
1196{
1197    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1198    mLoop = loop;
1199    sp<MediaPlayerBase> p = getPlayer();
1200    if (p != 0) return p->setLooping(loop);
1201    return NO_ERROR;
1202}
1203
1204status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1205{
1206    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1207
1208    // for hardware output, call player instead
1209    sp<MediaPlayerBase> p = getPlayer();
1210    {
1211      Mutex::Autolock l(mLock);
1212      if (p != 0 && p->hardwareOutput()) {
1213          MediaPlayerHWInterface* hwp =
1214                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1215          return hwp->setVolume(leftVolume, rightVolume);
1216      } else {
1217          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1218          return NO_ERROR;
1219      }
1220    }
1221
1222    return NO_ERROR;
1223}
1224
1225status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1226{
1227    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1228    Mutex::Autolock l(mLock);
1229    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1230    return NO_ERROR;
1231}
1232
1233status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1234{
1235    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1236    Mutex::Autolock l(mLock);
1237    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1238    return NO_ERROR;
1239}
1240
1241status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1242    ALOGV("[%d] setParameter(%d)", mConnId, key);
1243    switch (key) {
1244    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1245    {
1246        Mutex::Autolock l(mLock);
1247        return setAudioAttributes_l(request);
1248    }
1249    default:
1250        sp<MediaPlayerBase> p = getPlayer();
1251        if (p == 0) { return UNKNOWN_ERROR; }
1252        return p->setParameter(key, request);
1253    }
1254}
1255
1256status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1257    ALOGV("[%d] getParameter(%d)", mConnId, key);
1258    sp<MediaPlayerBase> p = getPlayer();
1259    if (p == 0) return UNKNOWN_ERROR;
1260    return p->getParameter(key, reply);
1261}
1262
1263status_t MediaPlayerService::Client::setRetransmitEndpoint(
1264        const struct sockaddr_in* endpoint) {
1265
1266    if (NULL != endpoint) {
1267        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1268        uint16_t p = ntohs(endpoint->sin_port);
1269        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1270                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1271    } else {
1272        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1273    }
1274
1275    sp<MediaPlayerBase> p = getPlayer();
1276
1277    // Right now, the only valid time to set a retransmit endpoint is before
1278    // player selection has been made (since the presence or absence of a
1279    // retransmit endpoint is going to determine which player is selected during
1280    // setDataSource).
1281    if (p != 0) return INVALID_OPERATION;
1282
1283    if (NULL != endpoint) {
1284        mRetransmitEndpoint = *endpoint;
1285        mRetransmitEndpointValid = true;
1286    } else {
1287        mRetransmitEndpointValid = false;
1288    }
1289
1290    return NO_ERROR;
1291}
1292
1293status_t MediaPlayerService::Client::getRetransmitEndpoint(
1294        struct sockaddr_in* endpoint)
1295{
1296    if (NULL == endpoint)
1297        return BAD_VALUE;
1298
1299    sp<MediaPlayerBase> p = getPlayer();
1300
1301    if (p != NULL)
1302        return p->getRetransmitEndpoint(endpoint);
1303
1304    if (!mRetransmitEndpointValid)
1305        return NO_INIT;
1306
1307    *endpoint = mRetransmitEndpoint;
1308
1309    return NO_ERROR;
1310}
1311
1312void MediaPlayerService::Client::notify(
1313        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1314{
1315    Client* client = static_cast<Client*>(cookie);
1316    if (client == NULL) {
1317        return;
1318    }
1319
1320    sp<IMediaPlayerClient> c;
1321    sp<Client> nextClient;
1322    status_t errStartNext = NO_ERROR;
1323    {
1324        Mutex::Autolock l(client->mLock);
1325        c = client->mClient;
1326        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1327            nextClient = client->mNextClient;
1328
1329            if (client->mAudioOutput != NULL)
1330                client->mAudioOutput->switchToNextOutput();
1331
1332            errStartNext = nextClient->start();
1333        }
1334    }
1335
1336    if (nextClient != NULL) {
1337        sp<IMediaPlayerClient> nc;
1338        {
1339            Mutex::Autolock l(nextClient->mLock);
1340            nc = nextClient->mClient;
1341        }
1342        if (nc != NULL) {
1343            if (errStartNext == NO_ERROR) {
1344                nc->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1345            } else {
1346                nc->notify(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN , 0, obj);
1347                ALOGE("gapless:start playback for next track failed, err(%d)", errStartNext);
1348            }
1349        }
1350    }
1351
1352    if (MEDIA_INFO == msg &&
1353        MEDIA_INFO_METADATA_UPDATE == ext1) {
1354        const media::Metadata::Type metadata_type = ext2;
1355
1356        if(client->shouldDropMetadata(metadata_type)) {
1357            return;
1358        }
1359
1360        // Update the list of metadata that have changed. getMetadata
1361        // also access mMetadataUpdated and clears it.
1362        client->addNewMetadataUpdate(metadata_type);
1363    }
1364
1365    if (c != NULL) {
1366        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1367        c->notify(msg, ext1, ext2, obj);
1368    }
1369}
1370
1371
1372bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1373{
1374    Mutex::Autolock lock(mLock);
1375
1376    if (findMetadata(mMetadataDrop, code)) {
1377        return true;
1378    }
1379
1380    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1381        return false;
1382    } else {
1383        return true;
1384    }
1385}
1386
1387
1388void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1389    Mutex::Autolock lock(mLock);
1390    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1391        mMetadataUpdated.add(metadata_type);
1392    }
1393}
1394
1395#if CALLBACK_ANTAGONIZER
1396const int Antagonizer::interval = 10000; // 10 msecs
1397
1398Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1399    mExit(false), mActive(false), mClient(client), mCb(cb)
1400{
1401    createThread(callbackThread, this);
1402}
1403
1404void Antagonizer::kill()
1405{
1406    Mutex::Autolock _l(mLock);
1407    mActive = false;
1408    mExit = true;
1409    mCondition.wait(mLock);
1410}
1411
1412int Antagonizer::callbackThread(void* user)
1413{
1414    ALOGD("Antagonizer started");
1415    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1416    while (!p->mExit) {
1417        if (p->mActive) {
1418            ALOGV("send event");
1419            p->mCb(p->mClient, 0, 0, 0);
1420        }
1421        usleep(interval);
1422    }
1423    Mutex::Autolock _l(p->mLock);
1424    p->mCondition.signal();
1425    ALOGD("Antagonizer stopped");
1426    return 0;
1427}
1428#endif
1429
1430#undef LOG_TAG
1431#define LOG_TAG "AudioSink"
1432MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, uid_t uid, int pid,
1433        const audio_attributes_t* attr)
1434    : mCallback(NULL),
1435      mCallbackCookie(NULL),
1436      mCallbackData(NULL),
1437      mStreamType(AUDIO_STREAM_MUSIC),
1438      mLeftVolume(1.0),
1439      mRightVolume(1.0),
1440      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1441      mSampleRateHz(0),
1442      mMsecsPerFrame(0),
1443      mFrameSize(0),
1444      mSessionId(sessionId),
1445      mUid(uid),
1446      mPid(pid),
1447      mSendLevel(0.0),
1448      mAuxEffectId(0),
1449      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1450{
1451    ALOGV("AudioOutput(%d)", sessionId);
1452    if (attr != NULL) {
1453        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1454        if (mAttributes != NULL) {
1455            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1456            mStreamType = audio_attributes_to_stream_type(attr);
1457        }
1458    } else {
1459        mAttributes = NULL;
1460    }
1461
1462    setMinBufferCount();
1463}
1464
1465MediaPlayerService::AudioOutput::~AudioOutput()
1466{
1467    close();
1468    free(mAttributes);
1469    delete mCallbackData;
1470}
1471
1472//static
1473void MediaPlayerService::AudioOutput::setMinBufferCount()
1474{
1475    char value[PROPERTY_VALUE_MAX];
1476    if (property_get("ro.kernel.qemu", value, 0)) {
1477        mIsOnEmulator = true;
1478        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1479    }
1480}
1481
1482// static
1483bool MediaPlayerService::AudioOutput::isOnEmulator()
1484{
1485    setMinBufferCount(); // benign race wrt other threads
1486    return mIsOnEmulator;
1487}
1488
1489// static
1490int MediaPlayerService::AudioOutput::getMinBufferCount()
1491{
1492    setMinBufferCount(); // benign race wrt other threads
1493    return mMinBufferCount;
1494}
1495
1496ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1497{
1498    Mutex::Autolock lock(mLock);
1499    if (mTrack == 0) return NO_INIT;
1500    return mTrack->frameCount() * mFrameSize;
1501}
1502
1503ssize_t MediaPlayerService::AudioOutput::frameCount() const
1504{
1505    Mutex::Autolock lock(mLock);
1506    if (mTrack == 0) return NO_INIT;
1507    return mTrack->frameCount();
1508}
1509
1510ssize_t MediaPlayerService::AudioOutput::channelCount() const
1511{
1512    Mutex::Autolock lock(mLock);
1513    if (mTrack == 0) return NO_INIT;
1514    return mTrack->channelCount();
1515}
1516
1517ssize_t MediaPlayerService::AudioOutput::frameSize() const
1518{
1519    Mutex::Autolock lock(mLock);
1520    if (mTrack == 0) return NO_INIT;
1521    return mFrameSize;
1522}
1523
1524uint32_t MediaPlayerService::AudioOutput::latency () const
1525{
1526    Mutex::Autolock lock(mLock);
1527    if (mTrack == 0) return 0;
1528    return mTrack->latency();
1529}
1530
1531float MediaPlayerService::AudioOutput::msecsPerFrame() const
1532{
1533    Mutex::Autolock lock(mLock);
1534    return mMsecsPerFrame;
1535}
1536
1537status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1538{
1539    Mutex::Autolock lock(mLock);
1540    if (mTrack == 0) return NO_INIT;
1541    return mTrack->getPosition(position);
1542}
1543
1544status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1545{
1546    Mutex::Autolock lock(mLock);
1547    if (mTrack == 0) return NO_INIT;
1548    return mTrack->getTimestamp(ts);
1549}
1550
1551// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1552// as it acquires locks and may query the audio driver.
1553//
1554// Some calls could conceivably retrieve extrapolated data instead of
1555// accessing getTimestamp() or getPosition() every time a data buffer with
1556// a media time is received.
1557//
1558// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1559int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1560{
1561    Mutex::Autolock lock(mLock);
1562    if (mTrack == 0 || mSampleRateHz == 0) {
1563        return 0;
1564    }
1565
1566    uint32_t numFramesPlayed;
1567    int64_t numFramesPlayedAtUs;
1568    AudioTimestamp ts;
1569
1570    status_t res = mTrack->getTimestamp(ts);
1571    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1572        numFramesPlayed = ts.mPosition;
1573        numFramesPlayedAtUs = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1574        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1575    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1576        numFramesPlayed = 0;
1577        numFramesPlayedAtUs = nowUs;
1578        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1579        //        numFramesPlayed, (long long)numFramesPlayedAtUs);
1580    } else {                         // case 3: transitory at new track or audio fast tracks.
1581        res = mTrack->getPosition(&numFramesPlayed);
1582        CHECK_EQ(res, (status_t)OK);
1583        numFramesPlayedAtUs = nowUs;
1584        numFramesPlayedAtUs += 1000LL * mTrack->latency() / 2; /* XXX */
1585        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1586    }
1587
1588    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1589    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1590    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1591            + nowUs - numFramesPlayedAtUs;
1592    if (durationUs < 0) {
1593        // Occurs when numFramesPlayed position is very small and the following:
1594        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1595        //     numFramesPlayedAtUs is greater than nowUs by time more than numFramesPlayed.
1596        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1597        //     numFramesPlayedAtUs, by a time amount greater than numFramesPlayed.
1598        //
1599        // Both of these are transitory conditions.
1600        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1601        durationUs = 0;
1602    }
1603    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1604            (long long)durationUs, (long long)nowUs,
1605            numFramesPlayed, (long long)numFramesPlayedAtUs);
1606    return durationUs;
1607}
1608
1609status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1610{
1611    Mutex::Autolock lock(mLock);
1612    if (mTrack == 0) return NO_INIT;
1613    ExtendedTimestamp ets;
1614    status_t status = mTrack->getTimestamp(&ets);
1615    if (status == OK || status == WOULD_BLOCK) {
1616        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1617    }
1618    return status;
1619}
1620
1621status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1622{
1623    Mutex::Autolock lock(mLock);
1624    if (mTrack == 0) return NO_INIT;
1625    return mTrack->setParameters(keyValuePairs);
1626}
1627
1628String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1629{
1630    Mutex::Autolock lock(mLock);
1631    if (mTrack == 0) return String8::empty();
1632    return mTrack->getParameters(keys);
1633}
1634
1635void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1636    Mutex::Autolock lock(mLock);
1637    if (attributes == NULL) {
1638        free(mAttributes);
1639        mAttributes = NULL;
1640    } else {
1641        if (mAttributes == NULL) {
1642            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1643        }
1644        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1645        mStreamType = audio_attributes_to_stream_type(attributes);
1646    }
1647}
1648
1649void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1650{
1651    Mutex::Autolock lock(mLock);
1652    // do not allow direct stream type modification if attributes have been set
1653    if (mAttributes == NULL) {
1654        mStreamType = streamType;
1655    }
1656}
1657
1658void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1659{
1660    ALOGV("deleteRecycledTrack_l");
1661    if (mRecycledTrack != 0) {
1662
1663        if (mCallbackData != NULL) {
1664            mCallbackData->setOutput(NULL);
1665            mCallbackData->endTrackSwitch();
1666        }
1667
1668        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1669            int32_t msec = 0;
1670            if (!mRecycledTrack->stopped()) { // check if active
1671                 (void)mRecycledTrack->pendingDuration(&msec);
1672            }
1673            mRecycledTrack->stop(); // ensure full data drain
1674            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1675            if (msec > 0) {
1676                static const int32_t WAIT_LIMIT_MS = 3000;
1677                if (msec > WAIT_LIMIT_MS) {
1678                    msec = WAIT_LIMIT_MS;
1679                }
1680                usleep(msec * 1000LL);
1681            }
1682        }
1683        // An offloaded track isn't flushed because the STREAM_END is reported
1684        // slightly prematurely to allow time for the gapless track switch
1685        // but this means that if we decide not to recycle the track there
1686        // could be a small amount of residual data still playing. We leave
1687        // AudioFlinger to drain the track.
1688
1689        mRecycledTrack.clear();
1690        close_l();
1691        delete mCallbackData;
1692        mCallbackData = NULL;
1693    }
1694}
1695
1696void MediaPlayerService::AudioOutput::close_l()
1697{
1698    mTrack.clear();
1699}
1700
1701status_t MediaPlayerService::AudioOutput::open(
1702        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1703        audio_format_t format, int bufferCount,
1704        AudioCallback cb, void *cookie,
1705        audio_output_flags_t flags,
1706        const audio_offload_info_t *offloadInfo,
1707        bool doNotReconnect,
1708        uint32_t suggestedFrameCount)
1709{
1710    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1711                format, bufferCount, mSessionId, flags);
1712
1713    // offloading is only supported in callback mode for now.
1714    // offloadInfo must be present if offload flag is set
1715    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1716            ((cb == NULL) || (offloadInfo == NULL))) {
1717        return BAD_VALUE;
1718    }
1719
1720    // compute frame count for the AudioTrack internal buffer
1721    size_t frameCount;
1722    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1723        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1724    } else {
1725        // try to estimate the buffer processing fetch size from AudioFlinger.
1726        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1727        uint32_t afSampleRate;
1728        size_t afFrameCount;
1729        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1730            return NO_INIT;
1731        }
1732        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1733            return NO_INIT;
1734        }
1735        const size_t framesPerBuffer =
1736                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1737
1738        if (bufferCount == 0) {
1739            // use suggestedFrameCount
1740            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1741        }
1742        // Check argument bufferCount against the mininum buffer count
1743        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1744            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1745            bufferCount = mMinBufferCount;
1746        }
1747        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1748        // which will be the minimum size permitted.
1749        frameCount = bufferCount * framesPerBuffer;
1750    }
1751
1752    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1753        channelMask = audio_channel_out_mask_from_count(channelCount);
1754        if (0 == channelMask) {
1755            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1756            return NO_INIT;
1757        }
1758    }
1759
1760    Mutex::Autolock lock(mLock);
1761    mCallback = cb;
1762    mCallbackCookie = cookie;
1763
1764    // Check whether we can recycle the track
1765    bool reuse = false;
1766    bool bothOffloaded = false;
1767
1768    if (mRecycledTrack != 0) {
1769        // check whether we are switching between two offloaded tracks
1770        bothOffloaded = (flags & mRecycledTrack->getFlags()
1771                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1772
1773        // check if the existing track can be reused as-is, or if a new track needs to be created.
1774        reuse = true;
1775
1776        if ((mCallbackData == NULL && mCallback != NULL) ||
1777                (mCallbackData != NULL && mCallback == NULL)) {
1778            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1779            ALOGV("can't chain callback and write");
1780            reuse = false;
1781        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1782                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1783            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1784                  mRecycledTrack->getSampleRate(), sampleRate,
1785                  mRecycledTrack->channelCount(), channelCount);
1786            reuse = false;
1787        } else if (flags != mFlags) {
1788            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1789            reuse = false;
1790        } else if (mRecycledTrack->format() != format) {
1791            reuse = false;
1792        }
1793    } else {
1794        ALOGV("no track available to recycle");
1795    }
1796
1797    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1798
1799    // If we can't recycle and both tracks are offloaded
1800    // we must close the previous output before opening a new one
1801    if (bothOffloaded && !reuse) {
1802        ALOGV("both offloaded and not recycling");
1803        deleteRecycledTrack_l();
1804    }
1805
1806    sp<AudioTrack> t;
1807    CallbackData *newcbd = NULL;
1808
1809    // We don't attempt to create a new track if we are recycling an
1810    // offloaded track. But, if we are recycling a non-offloaded or we
1811    // are switching where one is offloaded and one isn't then we create
1812    // the new track in advance so that we can read additional stream info
1813
1814    if (!(reuse && bothOffloaded)) {
1815        ALOGV("creating new AudioTrack");
1816
1817        if (mCallback != NULL) {
1818            newcbd = new CallbackData(this);
1819            t = new AudioTrack(
1820                    mStreamType,
1821                    sampleRate,
1822                    format,
1823                    channelMask,
1824                    frameCount,
1825                    flags,
1826                    CallbackWrapper,
1827                    newcbd,
1828                    0,  // notification frames
1829                    mSessionId,
1830                    AudioTrack::TRANSFER_CALLBACK,
1831                    offloadInfo,
1832                    mUid,
1833                    mPid,
1834                    mAttributes,
1835                    doNotReconnect);
1836        } else {
1837            // TODO: Due to buffer memory concerns, we use a max target playback speed
1838            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1839            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1840            const float targetSpeed =
1841                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1842            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1843                    "track target speed:%f clamped from playback speed:%f",
1844                    targetSpeed, mPlaybackRate.mSpeed);
1845            t = new AudioTrack(
1846                    mStreamType,
1847                    sampleRate,
1848                    format,
1849                    channelMask,
1850                    frameCount,
1851                    flags,
1852                    NULL, // callback
1853                    NULL, // user data
1854                    0, // notification frames
1855                    mSessionId,
1856                    AudioTrack::TRANSFER_DEFAULT,
1857                    NULL, // offload info
1858                    mUid,
1859                    mPid,
1860                    mAttributes,
1861                    doNotReconnect,
1862                    targetSpeed);
1863        }
1864
1865        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1866            ALOGE("Unable to create audio track");
1867            delete newcbd;
1868            // t goes out of scope, so reference count drops to zero
1869            return NO_INIT;
1870        } else {
1871            // successful AudioTrack initialization implies a legacy stream type was generated
1872            // from the audio attributes
1873            mStreamType = t->streamType();
1874        }
1875    }
1876
1877    if (reuse) {
1878        CHECK(mRecycledTrack != NULL);
1879
1880        if (!bothOffloaded) {
1881            if (mRecycledTrack->frameCount() != t->frameCount()) {
1882                ALOGV("framecount differs: %zu/%zu frames",
1883                      mRecycledTrack->frameCount(), t->frameCount());
1884                reuse = false;
1885            }
1886        }
1887
1888        if (reuse) {
1889            ALOGV("chaining to next output and recycling track");
1890            close_l();
1891            mTrack = mRecycledTrack;
1892            mRecycledTrack.clear();
1893            if (mCallbackData != NULL) {
1894                mCallbackData->setOutput(this);
1895            }
1896            delete newcbd;
1897            return updateTrack();
1898        }
1899    }
1900
1901    // we're not going to reuse the track, unblock and flush it
1902    // this was done earlier if both tracks are offloaded
1903    if (!bothOffloaded) {
1904        deleteRecycledTrack_l();
1905    }
1906
1907    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1908
1909    mCallbackData = newcbd;
1910    ALOGV("setVolume");
1911    t->setVolume(mLeftVolume, mRightVolume);
1912
1913    mSampleRateHz = sampleRate;
1914    mFlags = flags;
1915    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1916    mFrameSize = t->frameSize();
1917    mTrack = t;
1918
1919    return updateTrack();
1920}
1921
1922status_t MediaPlayerService::AudioOutput::updateTrack() {
1923    if (mTrack == NULL) {
1924        return NO_ERROR;
1925    }
1926
1927    status_t res = NO_ERROR;
1928    // Note some output devices may give us a direct track even though we don't specify it.
1929    // Example: Line application b/17459982.
1930    if ((mTrack->getFlags()
1931            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1932        res = mTrack->setPlaybackRate(mPlaybackRate);
1933        if (res == NO_ERROR) {
1934            mTrack->setAuxEffectSendLevel(mSendLevel);
1935            res = mTrack->attachAuxEffect(mAuxEffectId);
1936        }
1937    }
1938    ALOGV("updateTrack() DONE status %d", res);
1939    return res;
1940}
1941
1942status_t MediaPlayerService::AudioOutput::start()
1943{
1944    ALOGV("start");
1945    Mutex::Autolock lock(mLock);
1946    if (mCallbackData != NULL) {
1947        mCallbackData->endTrackSwitch();
1948    }
1949    if (mTrack != 0) {
1950        mTrack->setVolume(mLeftVolume, mRightVolume);
1951        mTrack->setAuxEffectSendLevel(mSendLevel);
1952        return mTrack->start();
1953    }
1954    return NO_INIT;
1955}
1956
1957void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1958    Mutex::Autolock lock(mLock);
1959    mNextOutput = nextOutput;
1960}
1961
1962void MediaPlayerService::AudioOutput::switchToNextOutput() {
1963    ALOGV("switchToNextOutput");
1964
1965    // Try to acquire the callback lock before moving track (without incurring deadlock).
1966    const unsigned kMaxSwitchTries = 100;
1967    Mutex::Autolock lock(mLock);
1968    for (unsigned tries = 0;;) {
1969        if (mTrack == 0) {
1970            return;
1971        }
1972        if (mNextOutput != NULL && mNextOutput != this) {
1973            if (mCallbackData != NULL) {
1974                // two alternative approaches
1975#if 1
1976                CallbackData *callbackData = mCallbackData;
1977                mLock.unlock();
1978                // proper acquisition sequence
1979                callbackData->lock();
1980                mLock.lock();
1981                // Caution: it is unlikely that someone deleted our callback or changed our target
1982                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1983                    // fatal if we are starved out.
1984                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1985                            "switchToNextOutput() cannot obtain correct lock sequence");
1986                    callbackData->unlock();
1987                    continue;
1988                }
1989                callbackData->mSwitching = true; // begin track switch
1990                callbackData->setOutput(NULL);
1991#else
1992                // tryBeginTrackSwitch() returns false if the callback has the lock.
1993                if (!mCallbackData->tryBeginTrackSwitch()) {
1994                    // fatal if we are starved out.
1995                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1996                            "switchToNextOutput() cannot obtain callback lock");
1997                    mLock.unlock();
1998                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1999                    mLock.lock();
2000                    continue;
2001                }
2002#endif
2003            }
2004
2005            Mutex::Autolock nextLock(mNextOutput->mLock);
2006
2007            // If the next output track is not NULL, then it has been
2008            // opened already for playback.
2009            // This is possible even without the next player being started,
2010            // for example, the next player could be prepared and seeked.
2011            //
2012            // Presuming it isn't advisable to force the track over.
2013             if (mNextOutput->mTrack == NULL) {
2014                ALOGD("Recycling track for gapless playback");
2015                delete mNextOutput->mCallbackData;
2016                mNextOutput->mCallbackData = mCallbackData;
2017                mNextOutput->mRecycledTrack = mTrack;
2018                mNextOutput->mSampleRateHz = mSampleRateHz;
2019                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
2020                mNextOutput->mFlags = mFlags;
2021                mNextOutput->mFrameSize = mFrameSize;
2022                close_l();
2023                mCallbackData = NULL;  // destruction handled by mNextOutput
2024            } else {
2025                ALOGW("Ignoring gapless playback because next player has already started");
2026                // remove track in case resource needed for future players.
2027                if (mCallbackData != NULL) {
2028                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
2029                }
2030                close_l();
2031            }
2032        }
2033        break;
2034    }
2035}
2036
2037ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
2038{
2039    Mutex::Autolock lock(mLock);
2040    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
2041
2042    //ALOGV("write(%p, %u)", buffer, size);
2043    if (mTrack != 0) {
2044        return mTrack->write(buffer, size, blocking);
2045    }
2046    return NO_INIT;
2047}
2048
2049void MediaPlayerService::AudioOutput::stop()
2050{
2051    ALOGV("stop");
2052    Mutex::Autolock lock(mLock);
2053    if (mTrack != 0) mTrack->stop();
2054}
2055
2056void MediaPlayerService::AudioOutput::flush()
2057{
2058    ALOGV("flush");
2059    Mutex::Autolock lock(mLock);
2060    if (mTrack != 0) mTrack->flush();
2061}
2062
2063void MediaPlayerService::AudioOutput::pause()
2064{
2065    ALOGV("pause");
2066    Mutex::Autolock lock(mLock);
2067    if (mTrack != 0) mTrack->pause();
2068}
2069
2070void MediaPlayerService::AudioOutput::close()
2071{
2072    ALOGV("close");
2073    sp<AudioTrack> track;
2074    {
2075        Mutex::Autolock lock(mLock);
2076        track = mTrack;
2077        close_l(); // clears mTrack
2078    }
2079    // destruction of the track occurs outside of mutex.
2080}
2081
2082void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2083{
2084    ALOGV("setVolume(%f, %f)", left, right);
2085    Mutex::Autolock lock(mLock);
2086    mLeftVolume = left;
2087    mRightVolume = right;
2088    if (mTrack != 0) {
2089        mTrack->setVolume(left, right);
2090    }
2091}
2092
2093status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2094{
2095    ALOGV("setPlaybackRate(%f %f %d %d)",
2096                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2097    Mutex::Autolock lock(mLock);
2098    if (mTrack == 0) {
2099        // remember rate so that we can set it when the track is opened
2100        mPlaybackRate = rate;
2101        return OK;
2102    }
2103    status_t res = mTrack->setPlaybackRate(rate);
2104    if (res != NO_ERROR) {
2105        return res;
2106    }
2107    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2108    CHECK_GT(rate.mSpeed, 0.f);
2109    mPlaybackRate = rate;
2110    if (mSampleRateHz != 0) {
2111        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2112    }
2113    return res;
2114}
2115
2116status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2117{
2118    ALOGV("setPlaybackRate");
2119    Mutex::Autolock lock(mLock);
2120    if (mTrack == 0) {
2121        return NO_INIT;
2122    }
2123    *rate = mTrack->getPlaybackRate();
2124    return NO_ERROR;
2125}
2126
2127status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2128{
2129    ALOGV("setAuxEffectSendLevel(%f)", level);
2130    Mutex::Autolock lock(mLock);
2131    mSendLevel = level;
2132    if (mTrack != 0) {
2133        return mTrack->setAuxEffectSendLevel(level);
2134    }
2135    return NO_ERROR;
2136}
2137
2138status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2139{
2140    ALOGV("attachAuxEffect(%d)", effectId);
2141    Mutex::Autolock lock(mLock);
2142    mAuxEffectId = effectId;
2143    if (mTrack != 0) {
2144        return mTrack->attachAuxEffect(effectId);
2145    }
2146    return NO_ERROR;
2147}
2148
2149// static
2150void MediaPlayerService::AudioOutput::CallbackWrapper(
2151        int event, void *cookie, void *info) {
2152    //ALOGV("callbackwrapper");
2153    CallbackData *data = (CallbackData*)cookie;
2154    // lock to ensure we aren't caught in the middle of a track switch.
2155    data->lock();
2156    AudioOutput *me = data->getOutput();
2157    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2158    if (me == NULL) {
2159        // no output set, likely because the track was scheduled to be reused
2160        // by another player, but the format turned out to be incompatible.
2161        data->unlock();
2162        if (buffer != NULL) {
2163            buffer->size = 0;
2164        }
2165        return;
2166    }
2167
2168    switch(event) {
2169    case AudioTrack::EVENT_MORE_DATA: {
2170        size_t actualSize = (*me->mCallback)(
2171                me, buffer->raw, buffer->size, me->mCallbackCookie,
2172                CB_EVENT_FILL_BUFFER);
2173
2174        // Log when no data is returned from the callback.
2175        // (1) We may have no data (especially with network streaming sources).
2176        // (2) We may have reached the EOS and the audio track is not stopped yet.
2177        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2178        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2179        //
2180        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2181        // nevertheless for power reasons, we don't want to see too many of these.
2182
2183        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2184
2185        buffer->size = actualSize;
2186        } break;
2187
2188    case AudioTrack::EVENT_STREAM_END:
2189        // currently only occurs for offloaded callbacks
2190        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2191        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2192                me->mCallbackCookie, CB_EVENT_STREAM_END);
2193        break;
2194
2195    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2196        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2197        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2198                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2199        break;
2200
2201    case AudioTrack::EVENT_UNDERRUN:
2202        // This occurs when there is no data available, typically
2203        // when there is a failure to supply data to the AudioTrack.  It can also
2204        // occur in non-offloaded mode when the audio device comes out of standby.
2205        //
2206        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2207        // it may sound like an audible pop or glitch.
2208        //
2209        // The underrun event is sent once per track underrun; the condition is reset
2210        // when more data is sent to the AudioTrack.
2211        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2212        break;
2213
2214    default:
2215        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2216    }
2217
2218    data->unlock();
2219}
2220
2221audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2222{
2223    Mutex::Autolock lock(mLock);
2224    return mSessionId;
2225}
2226
2227uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2228{
2229    Mutex::Autolock lock(mLock);
2230    if (mTrack == 0) return 0;
2231    return mTrack->getSampleRate();
2232}
2233
2234int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2235{
2236    Mutex::Autolock lock(mLock);
2237    if (mTrack == 0) {
2238        return 0;
2239    }
2240    int64_t duration;
2241    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2242        return 0;
2243    }
2244    return duration;
2245}
2246
2247////////////////////////////////////////////////////////////////////////////////
2248
2249struct CallbackThread : public Thread {
2250    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2251                   MediaPlayerBase::AudioSink::AudioCallback cb,
2252                   void *cookie);
2253
2254protected:
2255    virtual ~CallbackThread();
2256
2257    virtual bool threadLoop();
2258
2259private:
2260    wp<MediaPlayerBase::AudioSink> mSink;
2261    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2262    void *mCookie;
2263    void *mBuffer;
2264    size_t mBufferSize;
2265
2266    CallbackThread(const CallbackThread &);
2267    CallbackThread &operator=(const CallbackThread &);
2268};
2269
2270CallbackThread::CallbackThread(
2271        const wp<MediaPlayerBase::AudioSink> &sink,
2272        MediaPlayerBase::AudioSink::AudioCallback cb,
2273        void *cookie)
2274    : mSink(sink),
2275      mCallback(cb),
2276      mCookie(cookie),
2277      mBuffer(NULL),
2278      mBufferSize(0) {
2279}
2280
2281CallbackThread::~CallbackThread() {
2282    if (mBuffer) {
2283        free(mBuffer);
2284        mBuffer = NULL;
2285    }
2286}
2287
2288bool CallbackThread::threadLoop() {
2289    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2290    if (sink == NULL) {
2291        return false;
2292    }
2293
2294    if (mBuffer == NULL) {
2295        mBufferSize = sink->bufferSize();
2296        mBuffer = malloc(mBufferSize);
2297    }
2298
2299    size_t actualSize =
2300        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2301                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2302
2303    if (actualSize > 0) {
2304        sink->write(mBuffer, actualSize);
2305        // Could return false on sink->write() error or short count.
2306        // Not necessarily appropriate but would work for AudioCache behavior.
2307    }
2308
2309    return true;
2310}
2311
2312////////////////////////////////////////////////////////////////////////////////
2313
2314void MediaPlayerService::addBatteryData(uint32_t params)
2315{
2316    Mutex::Autolock lock(mLock);
2317
2318    int32_t time = systemTime() / 1000000L;
2319
2320    // change audio output devices. This notification comes from AudioFlinger
2321    if ((params & kBatteryDataSpeakerOn)
2322            || (params & kBatteryDataOtherAudioDeviceOn)) {
2323
2324        int deviceOn[NUM_AUDIO_DEVICES];
2325        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2326            deviceOn[i] = 0;
2327        }
2328
2329        if ((params & kBatteryDataSpeakerOn)
2330                && (params & kBatteryDataOtherAudioDeviceOn)) {
2331            deviceOn[SPEAKER_AND_OTHER] = 1;
2332        } else if (params & kBatteryDataSpeakerOn) {
2333            deviceOn[SPEAKER] = 1;
2334        } else {
2335            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2336        }
2337
2338        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2339            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2340
2341                if (mBatteryAudio.refCount > 0) { // if playing audio
2342                    if (!deviceOn[i]) {
2343                        mBatteryAudio.lastTime[i] += time;
2344                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2345                        mBatteryAudio.lastTime[i] = 0;
2346                    } else {
2347                        mBatteryAudio.lastTime[i] = 0 - time;
2348                    }
2349                }
2350
2351                mBatteryAudio.deviceOn[i] = deviceOn[i];
2352            }
2353        }
2354        return;
2355    }
2356
2357    // an audio stream is started
2358    if (params & kBatteryDataAudioFlingerStart) {
2359        // record the start time only if currently no other audio
2360        // is being played
2361        if (mBatteryAudio.refCount == 0) {
2362            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2363                if (mBatteryAudio.deviceOn[i]) {
2364                    mBatteryAudio.lastTime[i] -= time;
2365                }
2366            }
2367        }
2368
2369        mBatteryAudio.refCount ++;
2370        return;
2371
2372    } else if (params & kBatteryDataAudioFlingerStop) {
2373        if (mBatteryAudio.refCount <= 0) {
2374            ALOGW("Battery track warning: refCount is <= 0");
2375            return;
2376        }
2377
2378        // record the stop time only if currently this is the only
2379        // audio being played
2380        if (mBatteryAudio.refCount == 1) {
2381            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2382                if (mBatteryAudio.deviceOn[i]) {
2383                    mBatteryAudio.lastTime[i] += time;
2384                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2385                    mBatteryAudio.lastTime[i] = 0;
2386                }
2387            }
2388        }
2389
2390        mBatteryAudio.refCount --;
2391        return;
2392    }
2393
2394    uid_t uid = IPCThreadState::self()->getCallingUid();
2395    if (uid == AID_MEDIA) {
2396        return;
2397    }
2398    int index = mBatteryData.indexOfKey(uid);
2399
2400    if (index < 0) { // create a new entry for this UID
2401        BatteryUsageInfo info;
2402        info.audioTotalTime = 0;
2403        info.videoTotalTime = 0;
2404        info.audioLastTime = 0;
2405        info.videoLastTime = 0;
2406        info.refCount = 0;
2407
2408        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2409            ALOGE("Battery track error: no memory for new app");
2410            return;
2411        }
2412    }
2413
2414    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2415
2416    if (params & kBatteryDataCodecStarted) {
2417        if (params & kBatteryDataTrackAudio) {
2418            info.audioLastTime -= time;
2419            info.refCount ++;
2420        }
2421        if (params & kBatteryDataTrackVideo) {
2422            info.videoLastTime -= time;
2423            info.refCount ++;
2424        }
2425    } else {
2426        if (info.refCount == 0) {
2427            ALOGW("Battery track warning: refCount is already 0");
2428            return;
2429        } else if (info.refCount < 0) {
2430            ALOGE("Battery track error: refCount < 0");
2431            mBatteryData.removeItem(uid);
2432            return;
2433        }
2434
2435        if (params & kBatteryDataTrackAudio) {
2436            info.audioLastTime += time;
2437            info.refCount --;
2438        }
2439        if (params & kBatteryDataTrackVideo) {
2440            info.videoLastTime += time;
2441            info.refCount --;
2442        }
2443
2444        // no stream is being played by this UID
2445        if (info.refCount == 0) {
2446            info.audioTotalTime += info.audioLastTime;
2447            info.audioLastTime = 0;
2448            info.videoTotalTime += info.videoLastTime;
2449            info.videoLastTime = 0;
2450        }
2451    }
2452}
2453
2454status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2455    Mutex::Autolock lock(mLock);
2456
2457    // audio output devices usage
2458    int32_t time = systemTime() / 1000000L; //in ms
2459    int32_t totalTime;
2460
2461    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2462        totalTime = mBatteryAudio.totalTime[i];
2463
2464        if (mBatteryAudio.deviceOn[i]
2465            && (mBatteryAudio.lastTime[i] != 0)) {
2466                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2467                totalTime += tmpTime;
2468        }
2469
2470        reply->writeInt32(totalTime);
2471        // reset the total time
2472        mBatteryAudio.totalTime[i] = 0;
2473   }
2474
2475    // codec usage
2476    BatteryUsageInfo info;
2477    int size = mBatteryData.size();
2478
2479    reply->writeInt32(size);
2480    int i = 0;
2481
2482    while (i < size) {
2483        info = mBatteryData.valueAt(i);
2484
2485        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2486        reply->writeInt32(info.audioTotalTime);
2487        reply->writeInt32(info.videoTotalTime);
2488
2489        info.audioTotalTime = 0;
2490        info.videoTotalTime = 0;
2491
2492        // remove the UID entry where no stream is being played
2493        if (info.refCount <= 0) {
2494            mBatteryData.removeItemsAt(i);
2495            size --;
2496            i --;
2497        }
2498        i++;
2499    }
2500    return NO_ERROR;
2501}
2502} // namespace android
2503