MediaPlayerService.cpp revision d399e7e6065aa310e025ab633f633d5b4831a358 
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(%d, %d, %d, %d, %d, %d, %d, %d)",
979            mConnId, buffering.mInitialBufferingMode, buffering.mRebufferingMode,
980            buffering.mInitialWatermarkMs, buffering.mInitialWatermarkKB,
981            buffering.mRebufferingWatermarkLowMs,
982            buffering.mRebufferingWatermarkHighMs,
983            buffering.mRebufferingWatermarkLowKB,
984            buffering.mRebufferingWatermarkHighKB);
985    sp<MediaPlayerBase> p = getPlayer();
986    if (p == 0) return UNKNOWN_ERROR;
987    return p->setBufferingSettings(buffering);
988}
989
990status_t MediaPlayerService::Client::getDefaultBufferingSettings(
991        BufferingSettings* buffering /* nonnull */)
992{
993    sp<MediaPlayerBase> p = getPlayer();
994    // TODO: create mPlayer on demand.
995    if (p == 0) return UNKNOWN_ERROR;
996    status_t ret = p->getDefaultBufferingSettings(buffering);
997    if (ret == NO_ERROR) {
998        ALOGV("[%d] getDefaultBufferingSettings(%d, %d, %d, %d, %d, %d, %d, %d)",
999                mConnId, buffering->mInitialBufferingMode, buffering->mRebufferingMode,
1000                buffering->mInitialWatermarkMs, buffering->mInitialWatermarkKB,
1001                buffering->mRebufferingWatermarkLowMs,
1002                buffering->mRebufferingWatermarkHighMs,
1003                buffering->mRebufferingWatermarkLowKB,
1004                buffering->mRebufferingWatermarkHighKB);
1005    } else {
1006        ALOGV("[%d] getDefaultBufferingSettings returned %d", mConnId, ret);
1007    }
1008    return ret;
1009}
1010
1011status_t MediaPlayerService::Client::prepareAsync()
1012{
1013    ALOGV("[%d] prepareAsync", mConnId);
1014    sp<MediaPlayerBase> p = getPlayer();
1015    if (p == 0) return UNKNOWN_ERROR;
1016    status_t ret = p->prepareAsync();
1017#if CALLBACK_ANTAGONIZER
1018    ALOGD("start Antagonizer");
1019    if (ret == NO_ERROR) mAntagonizer->start();
1020#endif
1021    return ret;
1022}
1023
1024status_t MediaPlayerService::Client::start()
1025{
1026    ALOGV("[%d] start", mConnId);
1027    sp<MediaPlayerBase> p = getPlayer();
1028    if (p == 0) return UNKNOWN_ERROR;
1029    p->setLooping(mLoop);
1030    return p->start();
1031}
1032
1033status_t MediaPlayerService::Client::stop()
1034{
1035    ALOGV("[%d] stop", mConnId);
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    return p->stop();
1039}
1040
1041status_t MediaPlayerService::Client::pause()
1042{
1043    ALOGV("[%d] pause", mConnId);
1044    sp<MediaPlayerBase> p = getPlayer();
1045    if (p == 0) return UNKNOWN_ERROR;
1046    return p->pause();
1047}
1048
1049status_t MediaPlayerService::Client::isPlaying(bool* state)
1050{
1051    *state = false;
1052    sp<MediaPlayerBase> p = getPlayer();
1053    if (p == 0) return UNKNOWN_ERROR;
1054    *state = p->isPlaying();
1055    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1056    return NO_ERROR;
1057}
1058
1059status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1060{
1061    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1062            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1063    sp<MediaPlayerBase> p = getPlayer();
1064    if (p == 0) return UNKNOWN_ERROR;
1065    return p->setPlaybackSettings(rate);
1066}
1067
1068status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1069{
1070    sp<MediaPlayerBase> p = getPlayer();
1071    if (p == 0) return UNKNOWN_ERROR;
1072    status_t ret = p->getPlaybackSettings(rate);
1073    if (ret == NO_ERROR) {
1074        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1075                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1076    } else {
1077        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1078    }
1079    return ret;
1080}
1081
1082status_t MediaPlayerService::Client::setSyncSettings(
1083        const AVSyncSettings& sync, float videoFpsHint)
1084{
1085    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1086            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1087    sp<MediaPlayerBase> p = getPlayer();
1088    if (p == 0) return UNKNOWN_ERROR;
1089    return p->setSyncSettings(sync, videoFpsHint);
1090}
1091
1092status_t MediaPlayerService::Client::getSyncSettings(
1093        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1094{
1095    sp<MediaPlayerBase> p = getPlayer();
1096    if (p == 0) return UNKNOWN_ERROR;
1097    status_t ret = p->getSyncSettings(sync, videoFps);
1098    if (ret == NO_ERROR) {
1099        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1100                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1101    } else {
1102        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1103    }
1104    return ret;
1105}
1106
1107status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1108{
1109    ALOGV("getCurrentPosition");
1110    sp<MediaPlayerBase> p = getPlayer();
1111    if (p == 0) return UNKNOWN_ERROR;
1112    status_t ret = p->getCurrentPosition(msec);
1113    if (ret == NO_ERROR) {
1114        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1115    } else {
1116        ALOGE("getCurrentPosition returned %d", ret);
1117    }
1118    return ret;
1119}
1120
1121status_t MediaPlayerService::Client::getDuration(int *msec)
1122{
1123    ALOGV("getDuration");
1124    sp<MediaPlayerBase> p = getPlayer();
1125    if (p == 0) return UNKNOWN_ERROR;
1126    status_t ret = p->getDuration(msec);
1127    if (ret == NO_ERROR) {
1128        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1129    } else {
1130        ALOGE("getDuration returned %d", ret);
1131    }
1132    return ret;
1133}
1134
1135status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1136    ALOGV("setNextPlayer");
1137    Mutex::Autolock l(mLock);
1138    sp<Client> c = static_cast<Client*>(player.get());
1139    if (c != NULL && !mService->hasClient(c)) {
1140      return BAD_VALUE;
1141    }
1142
1143    mNextClient = c;
1144
1145    if (c != NULL) {
1146        if (mAudioOutput != NULL) {
1147            mAudioOutput->setNextOutput(c->mAudioOutput);
1148        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1149            ALOGE("no current audio output");
1150        }
1151
1152        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1153            mPlayer->setNextPlayer(mNextClient->getPlayer());
1154        }
1155    }
1156
1157    return OK;
1158}
1159
1160status_t MediaPlayerService::Client::seekTo(int msec, MediaPlayerSeekMode mode)
1161{
1162    ALOGV("[%d] seekTo(%d, %d)", mConnId, msec, mode);
1163    sp<MediaPlayerBase> p = getPlayer();
1164    if (p == 0) return UNKNOWN_ERROR;
1165    return p->seekTo(msec, mode);
1166}
1167
1168status_t MediaPlayerService::Client::reset()
1169{
1170    ALOGV("[%d] reset", mConnId);
1171    mRetransmitEndpointValid = false;
1172    sp<MediaPlayerBase> p = getPlayer();
1173    if (p == 0) return UNKNOWN_ERROR;
1174    return p->reset();
1175}
1176
1177status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1178{
1179    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1180    // TODO: for hardware output, call player instead
1181    Mutex::Autolock l(mLock);
1182    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1183    return NO_ERROR;
1184}
1185
1186status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1187{
1188    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1189    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1190    if (mAudioAttributes == NULL) {
1191        return NO_MEMORY;
1192    }
1193    unmarshallAudioAttributes(parcel, mAudioAttributes);
1194
1195    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1196            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1197            mAudioAttributes->tags);
1198
1199    if (mAudioOutput != 0) {
1200        mAudioOutput->setAudioAttributes(mAudioAttributes);
1201    }
1202    return NO_ERROR;
1203}
1204
1205status_t MediaPlayerService::Client::setLooping(int loop)
1206{
1207    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1208    mLoop = loop;
1209    sp<MediaPlayerBase> p = getPlayer();
1210    if (p != 0) return p->setLooping(loop);
1211    return NO_ERROR;
1212}
1213
1214status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1215{
1216    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1217
1218    // for hardware output, call player instead
1219    sp<MediaPlayerBase> p = getPlayer();
1220    {
1221      Mutex::Autolock l(mLock);
1222      if (p != 0 && p->hardwareOutput()) {
1223          MediaPlayerHWInterface* hwp =
1224                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1225          return hwp->setVolume(leftVolume, rightVolume);
1226      } else {
1227          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1228          return NO_ERROR;
1229      }
1230    }
1231
1232    return NO_ERROR;
1233}
1234
1235status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1236{
1237    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1238    Mutex::Autolock l(mLock);
1239    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1240    return NO_ERROR;
1241}
1242
1243status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1244{
1245    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1246    Mutex::Autolock l(mLock);
1247    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1248    return NO_ERROR;
1249}
1250
1251status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1252    ALOGV("[%d] setParameter(%d)", mConnId, key);
1253    switch (key) {
1254    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1255    {
1256        Mutex::Autolock l(mLock);
1257        return setAudioAttributes_l(request);
1258    }
1259    default:
1260        sp<MediaPlayerBase> p = getPlayer();
1261        if (p == 0) { return UNKNOWN_ERROR; }
1262        return p->setParameter(key, request);
1263    }
1264}
1265
1266status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1267    ALOGV("[%d] getParameter(%d)", mConnId, key);
1268    sp<MediaPlayerBase> p = getPlayer();
1269    if (p == 0) return UNKNOWN_ERROR;
1270    return p->getParameter(key, reply);
1271}
1272
1273status_t MediaPlayerService::Client::setRetransmitEndpoint(
1274        const struct sockaddr_in* endpoint) {
1275
1276    if (NULL != endpoint) {
1277        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1278        uint16_t p = ntohs(endpoint->sin_port);
1279        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1280                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1281    } else {
1282        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1283    }
1284
1285    sp<MediaPlayerBase> p = getPlayer();
1286
1287    // Right now, the only valid time to set a retransmit endpoint is before
1288    // player selection has been made (since the presence or absence of a
1289    // retransmit endpoint is going to determine which player is selected during
1290    // setDataSource).
1291    if (p != 0) return INVALID_OPERATION;
1292
1293    if (NULL != endpoint) {
1294        mRetransmitEndpoint = *endpoint;
1295        mRetransmitEndpointValid = true;
1296    } else {
1297        mRetransmitEndpointValid = false;
1298    }
1299
1300    return NO_ERROR;
1301}
1302
1303status_t MediaPlayerService::Client::getRetransmitEndpoint(
1304        struct sockaddr_in* endpoint)
1305{
1306    if (NULL == endpoint)
1307        return BAD_VALUE;
1308
1309    sp<MediaPlayerBase> p = getPlayer();
1310
1311    if (p != NULL)
1312        return p->getRetransmitEndpoint(endpoint);
1313
1314    if (!mRetransmitEndpointValid)
1315        return NO_INIT;
1316
1317    *endpoint = mRetransmitEndpoint;
1318
1319    return NO_ERROR;
1320}
1321
1322void MediaPlayerService::Client::notify(
1323        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1324{
1325    Client* client = static_cast<Client*>(cookie);
1326    if (client == NULL) {
1327        return;
1328    }
1329
1330    sp<IMediaPlayerClient> c;
1331    {
1332        Mutex::Autolock l(client->mLock);
1333        c = client->mClient;
1334        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1335            if (client->mAudioOutput != NULL)
1336                client->mAudioOutput->switchToNextOutput();
1337            client->mNextClient->start();
1338            if (client->mNextClient->mClient != NULL) {
1339                client->mNextClient->mClient->notify(
1340                        MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1341            }
1342        }
1343    }
1344
1345    if (MEDIA_INFO == msg &&
1346        MEDIA_INFO_METADATA_UPDATE == ext1) {
1347        const media::Metadata::Type metadata_type = ext2;
1348
1349        if(client->shouldDropMetadata(metadata_type)) {
1350            return;
1351        }
1352
1353        // Update the list of metadata that have changed. getMetadata
1354        // also access mMetadataUpdated and clears it.
1355        client->addNewMetadataUpdate(metadata_type);
1356    }
1357
1358    if (c != NULL) {
1359        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1360        c->notify(msg, ext1, ext2, obj);
1361    }
1362}
1363
1364
1365bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1366{
1367    Mutex::Autolock lock(mLock);
1368
1369    if (findMetadata(mMetadataDrop, code)) {
1370        return true;
1371    }
1372
1373    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1374        return false;
1375    } else {
1376        return true;
1377    }
1378}
1379
1380
1381void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1382    Mutex::Autolock lock(mLock);
1383    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1384        mMetadataUpdated.add(metadata_type);
1385    }
1386}
1387
1388#if CALLBACK_ANTAGONIZER
1389const int Antagonizer::interval = 10000; // 10 msecs
1390
1391Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1392    mExit(false), mActive(false), mClient(client), mCb(cb)
1393{
1394    createThread(callbackThread, this);
1395}
1396
1397void Antagonizer::kill()
1398{
1399    Mutex::Autolock _l(mLock);
1400    mActive = false;
1401    mExit = true;
1402    mCondition.wait(mLock);
1403}
1404
1405int Antagonizer::callbackThread(void* user)
1406{
1407    ALOGD("Antagonizer started");
1408    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1409    while (!p->mExit) {
1410        if (p->mActive) {
1411            ALOGV("send event");
1412            p->mCb(p->mClient, 0, 0, 0);
1413        }
1414        usleep(interval);
1415    }
1416    Mutex::Autolock _l(p->mLock);
1417    p->mCondition.signal();
1418    ALOGD("Antagonizer stopped");
1419    return 0;
1420}
1421#endif
1422
1423#undef LOG_TAG
1424#define LOG_TAG "AudioSink"
1425MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, int uid, int pid,
1426        const audio_attributes_t* attr)
1427    : mCallback(NULL),
1428      mCallbackCookie(NULL),
1429      mCallbackData(NULL),
1430      mStreamType(AUDIO_STREAM_MUSIC),
1431      mLeftVolume(1.0),
1432      mRightVolume(1.0),
1433      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1434      mSampleRateHz(0),
1435      mMsecsPerFrame(0),
1436      mFrameSize(0),
1437      mSessionId(sessionId),
1438      mUid(uid),
1439      mPid(pid),
1440      mSendLevel(0.0),
1441      mAuxEffectId(0),
1442      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1443{
1444    ALOGV("AudioOutput(%d)", sessionId);
1445    if (attr != NULL) {
1446        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1447        if (mAttributes != NULL) {
1448            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1449            mStreamType = audio_attributes_to_stream_type(attr);
1450        }
1451    } else {
1452        mAttributes = NULL;
1453    }
1454
1455    setMinBufferCount();
1456}
1457
1458MediaPlayerService::AudioOutput::~AudioOutput()
1459{
1460    close();
1461    free(mAttributes);
1462    delete mCallbackData;
1463}
1464
1465//static
1466void MediaPlayerService::AudioOutput::setMinBufferCount()
1467{
1468    char value[PROPERTY_VALUE_MAX];
1469    if (property_get("ro.kernel.qemu", value, 0)) {
1470        mIsOnEmulator = true;
1471        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1472    }
1473}
1474
1475// static
1476bool MediaPlayerService::AudioOutput::isOnEmulator()
1477{
1478    setMinBufferCount(); // benign race wrt other threads
1479    return mIsOnEmulator;
1480}
1481
1482// static
1483int MediaPlayerService::AudioOutput::getMinBufferCount()
1484{
1485    setMinBufferCount(); // benign race wrt other threads
1486    return mMinBufferCount;
1487}
1488
1489ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1490{
1491    Mutex::Autolock lock(mLock);
1492    if (mTrack == 0) return NO_INIT;
1493    return mTrack->frameCount() * mFrameSize;
1494}
1495
1496ssize_t MediaPlayerService::AudioOutput::frameCount() const
1497{
1498    Mutex::Autolock lock(mLock);
1499    if (mTrack == 0) return NO_INIT;
1500    return mTrack->frameCount();
1501}
1502
1503ssize_t MediaPlayerService::AudioOutput::channelCount() const
1504{
1505    Mutex::Autolock lock(mLock);
1506    if (mTrack == 0) return NO_INIT;
1507    return mTrack->channelCount();
1508}
1509
1510ssize_t MediaPlayerService::AudioOutput::frameSize() const
1511{
1512    Mutex::Autolock lock(mLock);
1513    if (mTrack == 0) return NO_INIT;
1514    return mFrameSize;
1515}
1516
1517uint32_t MediaPlayerService::AudioOutput::latency () const
1518{
1519    Mutex::Autolock lock(mLock);
1520    if (mTrack == 0) return 0;
1521    return mTrack->latency();
1522}
1523
1524float MediaPlayerService::AudioOutput::msecsPerFrame() const
1525{
1526    Mutex::Autolock lock(mLock);
1527    return mMsecsPerFrame;
1528}
1529
1530status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1531{
1532    Mutex::Autolock lock(mLock);
1533    if (mTrack == 0) return NO_INIT;
1534    return mTrack->getPosition(position);
1535}
1536
1537status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1538{
1539    Mutex::Autolock lock(mLock);
1540    if (mTrack == 0) return NO_INIT;
1541    return mTrack->getTimestamp(ts);
1542}
1543
1544// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1545// as it acquires locks and may query the audio driver.
1546//
1547// Some calls could conceivably retrieve extrapolated data instead of
1548// accessing getTimestamp() or getPosition() every time a data buffer with
1549// a media time is received.
1550//
1551// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1552int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1553{
1554    Mutex::Autolock lock(mLock);
1555    if (mTrack == 0 || mSampleRateHz == 0) {
1556        return 0;
1557    }
1558
1559    uint32_t numFramesPlayed;
1560    int64_t numFramesPlayedAtUs;
1561    AudioTimestamp ts;
1562
1563    status_t res = mTrack->getTimestamp(ts);
1564    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1565        numFramesPlayed = ts.mPosition;
1566        numFramesPlayedAtUs = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1567        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1568    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1569        numFramesPlayed = 0;
1570        numFramesPlayedAtUs = nowUs;
1571        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1572        //        numFramesPlayed, (long long)numFramesPlayedAtUs);
1573    } else {                         // case 3: transitory at new track or audio fast tracks.
1574        res = mTrack->getPosition(&numFramesPlayed);
1575        CHECK_EQ(res, (status_t)OK);
1576        numFramesPlayedAtUs = nowUs;
1577        numFramesPlayedAtUs += 1000LL * mTrack->latency() / 2; /* XXX */
1578        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1579    }
1580
1581    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1582    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1583    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1584            + nowUs - numFramesPlayedAtUs;
1585    if (durationUs < 0) {
1586        // Occurs when numFramesPlayed position is very small and the following:
1587        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1588        //     numFramesPlayedAtUs is greater than nowUs by time more than numFramesPlayed.
1589        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1590        //     numFramesPlayedAtUs, by a time amount greater than numFramesPlayed.
1591        //
1592        // Both of these are transitory conditions.
1593        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1594        durationUs = 0;
1595    }
1596    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1597            (long long)durationUs, (long long)nowUs,
1598            numFramesPlayed, (long long)numFramesPlayedAtUs);
1599    return durationUs;
1600}
1601
1602status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1603{
1604    Mutex::Autolock lock(mLock);
1605    if (mTrack == 0) return NO_INIT;
1606    ExtendedTimestamp ets;
1607    status_t status = mTrack->getTimestamp(&ets);
1608    if (status == OK || status == WOULD_BLOCK) {
1609        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1610    }
1611    return status;
1612}
1613
1614status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1615{
1616    Mutex::Autolock lock(mLock);
1617    if (mTrack == 0) return NO_INIT;
1618    return mTrack->setParameters(keyValuePairs);
1619}
1620
1621String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1622{
1623    Mutex::Autolock lock(mLock);
1624    if (mTrack == 0) return String8::empty();
1625    return mTrack->getParameters(keys);
1626}
1627
1628void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1629    Mutex::Autolock lock(mLock);
1630    if (attributes == NULL) {
1631        free(mAttributes);
1632        mAttributes = NULL;
1633    } else {
1634        if (mAttributes == NULL) {
1635            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1636        }
1637        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1638        mStreamType = audio_attributes_to_stream_type(attributes);
1639    }
1640}
1641
1642void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1643{
1644    Mutex::Autolock lock(mLock);
1645    // do not allow direct stream type modification if attributes have been set
1646    if (mAttributes == NULL) {
1647        mStreamType = streamType;
1648    }
1649}
1650
1651void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1652{
1653    ALOGV("deleteRecycledTrack_l");
1654    if (mRecycledTrack != 0) {
1655
1656        if (mCallbackData != NULL) {
1657            mCallbackData->setOutput(NULL);
1658            mCallbackData->endTrackSwitch();
1659        }
1660
1661        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1662            int32_t msec = 0;
1663            if (!mRecycledTrack->stopped()) { // check if active
1664                 (void)mRecycledTrack->pendingDuration(&msec);
1665            }
1666            mRecycledTrack->stop(); // ensure full data drain
1667            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1668            if (msec > 0) {
1669                static const int32_t WAIT_LIMIT_MS = 3000;
1670                if (msec > WAIT_LIMIT_MS) {
1671                    msec = WAIT_LIMIT_MS;
1672                }
1673                usleep(msec * 1000LL);
1674            }
1675        }
1676        // An offloaded track isn't flushed because the STREAM_END is reported
1677        // slightly prematurely to allow time for the gapless track switch
1678        // but this means that if we decide not to recycle the track there
1679        // could be a small amount of residual data still playing. We leave
1680        // AudioFlinger to drain the track.
1681
1682        mRecycledTrack.clear();
1683        close_l();
1684        delete mCallbackData;
1685        mCallbackData = NULL;
1686    }
1687}
1688
1689void MediaPlayerService::AudioOutput::close_l()
1690{
1691    mTrack.clear();
1692}
1693
1694status_t MediaPlayerService::AudioOutput::open(
1695        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1696        audio_format_t format, int bufferCount,
1697        AudioCallback cb, void *cookie,
1698        audio_output_flags_t flags,
1699        const audio_offload_info_t *offloadInfo,
1700        bool doNotReconnect,
1701        uint32_t suggestedFrameCount)
1702{
1703    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1704                format, bufferCount, mSessionId, flags);
1705
1706    // offloading is only supported in callback mode for now.
1707    // offloadInfo must be present if offload flag is set
1708    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1709            ((cb == NULL) || (offloadInfo == NULL))) {
1710        return BAD_VALUE;
1711    }
1712
1713    // compute frame count for the AudioTrack internal buffer
1714    size_t frameCount;
1715    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1716        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1717    } else {
1718        // try to estimate the buffer processing fetch size from AudioFlinger.
1719        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1720        uint32_t afSampleRate;
1721        size_t afFrameCount;
1722        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1723            return NO_INIT;
1724        }
1725        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1726            return NO_INIT;
1727        }
1728        const size_t framesPerBuffer =
1729                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1730
1731        if (bufferCount == 0) {
1732            // use suggestedFrameCount
1733            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1734        }
1735        // Check argument bufferCount against the mininum buffer count
1736        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1737            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1738            bufferCount = mMinBufferCount;
1739        }
1740        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1741        // which will be the minimum size permitted.
1742        frameCount = bufferCount * framesPerBuffer;
1743    }
1744
1745    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1746        channelMask = audio_channel_out_mask_from_count(channelCount);
1747        if (0 == channelMask) {
1748            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1749            return NO_INIT;
1750        }
1751    }
1752
1753    Mutex::Autolock lock(mLock);
1754    mCallback = cb;
1755    mCallbackCookie = cookie;
1756
1757    // Check whether we can recycle the track
1758    bool reuse = false;
1759    bool bothOffloaded = false;
1760
1761    if (mRecycledTrack != 0) {
1762        // check whether we are switching between two offloaded tracks
1763        bothOffloaded = (flags & mRecycledTrack->getFlags()
1764                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1765
1766        // check if the existing track can be reused as-is, or if a new track needs to be created.
1767        reuse = true;
1768
1769        if ((mCallbackData == NULL && mCallback != NULL) ||
1770                (mCallbackData != NULL && mCallback == NULL)) {
1771            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1772            ALOGV("can't chain callback and write");
1773            reuse = false;
1774        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1775                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1776            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1777                  mRecycledTrack->getSampleRate(), sampleRate,
1778                  mRecycledTrack->channelCount(), channelCount);
1779            reuse = false;
1780        } else if (flags != mFlags) {
1781            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1782            reuse = false;
1783        } else if (mRecycledTrack->format() != format) {
1784            reuse = false;
1785        }
1786    } else {
1787        ALOGV("no track available to recycle");
1788    }
1789
1790    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1791
1792    // If we can't recycle and both tracks are offloaded
1793    // we must close the previous output before opening a new one
1794    if (bothOffloaded && !reuse) {
1795        ALOGV("both offloaded and not recycling");
1796        deleteRecycledTrack_l();
1797    }
1798
1799    sp<AudioTrack> t;
1800    CallbackData *newcbd = NULL;
1801
1802    // We don't attempt to create a new track if we are recycling an
1803    // offloaded track. But, if we are recycling a non-offloaded or we
1804    // are switching where one is offloaded and one isn't then we create
1805    // the new track in advance so that we can read additional stream info
1806
1807    if (!(reuse && bothOffloaded)) {
1808        ALOGV("creating new AudioTrack");
1809
1810        if (mCallback != NULL) {
1811            newcbd = new CallbackData(this);
1812            t = new AudioTrack(
1813                    mStreamType,
1814                    sampleRate,
1815                    format,
1816                    channelMask,
1817                    frameCount,
1818                    flags,
1819                    CallbackWrapper,
1820                    newcbd,
1821                    0,  // notification frames
1822                    mSessionId,
1823                    AudioTrack::TRANSFER_CALLBACK,
1824                    offloadInfo,
1825                    mUid,
1826                    mPid,
1827                    mAttributes,
1828                    doNotReconnect);
1829        } else {
1830            // TODO: Due to buffer memory concerns, we use a max target playback speed
1831            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1832            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1833            const float targetSpeed =
1834                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1835            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1836                    "track target speed:%f clamped from playback speed:%f",
1837                    targetSpeed, mPlaybackRate.mSpeed);
1838            t = new AudioTrack(
1839                    mStreamType,
1840                    sampleRate,
1841                    format,
1842                    channelMask,
1843                    frameCount,
1844                    flags,
1845                    NULL, // callback
1846                    NULL, // user data
1847                    0, // notification frames
1848                    mSessionId,
1849                    AudioTrack::TRANSFER_DEFAULT,
1850                    NULL, // offload info
1851                    mUid,
1852                    mPid,
1853                    mAttributes,
1854                    doNotReconnect,
1855                    targetSpeed);
1856        }
1857
1858        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1859            ALOGE("Unable to create audio track");
1860            delete newcbd;
1861            // t goes out of scope, so reference count drops to zero
1862            return NO_INIT;
1863        } else {
1864            // successful AudioTrack initialization implies a legacy stream type was generated
1865            // from the audio attributes
1866            mStreamType = t->streamType();
1867        }
1868    }
1869
1870    if (reuse) {
1871        CHECK(mRecycledTrack != NULL);
1872
1873        if (!bothOffloaded) {
1874            if (mRecycledTrack->frameCount() != t->frameCount()) {
1875                ALOGV("framecount differs: %zu/%zu frames",
1876                      mRecycledTrack->frameCount(), t->frameCount());
1877                reuse = false;
1878            }
1879        }
1880
1881        if (reuse) {
1882            ALOGV("chaining to next output and recycling track");
1883            close_l();
1884            mTrack = mRecycledTrack;
1885            mRecycledTrack.clear();
1886            if (mCallbackData != NULL) {
1887                mCallbackData->setOutput(this);
1888            }
1889            delete newcbd;
1890            return updateTrack();
1891        }
1892    }
1893
1894    // we're not going to reuse the track, unblock and flush it
1895    // this was done earlier if both tracks are offloaded
1896    if (!bothOffloaded) {
1897        deleteRecycledTrack_l();
1898    }
1899
1900    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1901
1902    mCallbackData = newcbd;
1903    ALOGV("setVolume");
1904    t->setVolume(mLeftVolume, mRightVolume);
1905
1906    mSampleRateHz = sampleRate;
1907    mFlags = flags;
1908    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1909    mFrameSize = t->frameSize();
1910    mTrack = t;
1911
1912    return updateTrack();
1913}
1914
1915status_t MediaPlayerService::AudioOutput::updateTrack() {
1916    if (mTrack == NULL) {
1917        return NO_ERROR;
1918    }
1919
1920    status_t res = NO_ERROR;
1921    // Note some output devices may give us a direct track even though we don't specify it.
1922    // Example: Line application b/17459982.
1923    if ((mTrack->getFlags()
1924            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1925        res = mTrack->setPlaybackRate(mPlaybackRate);
1926        if (res == NO_ERROR) {
1927            mTrack->setAuxEffectSendLevel(mSendLevel);
1928            res = mTrack->attachAuxEffect(mAuxEffectId);
1929        }
1930    }
1931    ALOGV("updateTrack() DONE status %d", res);
1932    return res;
1933}
1934
1935status_t MediaPlayerService::AudioOutput::start()
1936{
1937    ALOGV("start");
1938    Mutex::Autolock lock(mLock);
1939    if (mCallbackData != NULL) {
1940        mCallbackData->endTrackSwitch();
1941    }
1942    if (mTrack != 0) {
1943        mTrack->setVolume(mLeftVolume, mRightVolume);
1944        mTrack->setAuxEffectSendLevel(mSendLevel);
1945        return mTrack->start();
1946    }
1947    return NO_INIT;
1948}
1949
1950void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1951    Mutex::Autolock lock(mLock);
1952    mNextOutput = nextOutput;
1953}
1954
1955void MediaPlayerService::AudioOutput::switchToNextOutput() {
1956    ALOGV("switchToNextOutput");
1957
1958    // Try to acquire the callback lock before moving track (without incurring deadlock).
1959    const unsigned kMaxSwitchTries = 100;
1960    Mutex::Autolock lock(mLock);
1961    for (unsigned tries = 0;;) {
1962        if (mTrack == 0) {
1963            return;
1964        }
1965        if (mNextOutput != NULL && mNextOutput != this) {
1966            if (mCallbackData != NULL) {
1967                // two alternative approaches
1968#if 1
1969                CallbackData *callbackData = mCallbackData;
1970                mLock.unlock();
1971                // proper acquisition sequence
1972                callbackData->lock();
1973                mLock.lock();
1974                // Caution: it is unlikely that someone deleted our callback or changed our target
1975                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1976                    // fatal if we are starved out.
1977                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1978                            "switchToNextOutput() cannot obtain correct lock sequence");
1979                    callbackData->unlock();
1980                    continue;
1981                }
1982                callbackData->mSwitching = true; // begin track switch
1983                callbackData->setOutput(NULL);
1984#else
1985                // tryBeginTrackSwitch() returns false if the callback has the lock.
1986                if (!mCallbackData->tryBeginTrackSwitch()) {
1987                    // fatal if we are starved out.
1988                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1989                            "switchToNextOutput() cannot obtain callback lock");
1990                    mLock.unlock();
1991                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1992                    mLock.lock();
1993                    continue;
1994                }
1995#endif
1996            }
1997
1998            Mutex::Autolock nextLock(mNextOutput->mLock);
1999
2000            // If the next output track is not NULL, then it has been
2001            // opened already for playback.
2002            // This is possible even without the next player being started,
2003            // for example, the next player could be prepared and seeked.
2004            //
2005            // Presuming it isn't advisable to force the track over.
2006             if (mNextOutput->mTrack == NULL) {
2007                ALOGD("Recycling track for gapless playback");
2008                delete mNextOutput->mCallbackData;
2009                mNextOutput->mCallbackData = mCallbackData;
2010                mNextOutput->mRecycledTrack = mTrack;
2011                mNextOutput->mSampleRateHz = mSampleRateHz;
2012                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
2013                mNextOutput->mFlags = mFlags;
2014                mNextOutput->mFrameSize = mFrameSize;
2015                close_l();
2016                mCallbackData = NULL;  // destruction handled by mNextOutput
2017            } else {
2018                ALOGW("Ignoring gapless playback because next player has already started");
2019                // remove track in case resource needed for future players.
2020                if (mCallbackData != NULL) {
2021                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
2022                }
2023                close_l();
2024            }
2025        }
2026        break;
2027    }
2028}
2029
2030ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
2031{
2032    Mutex::Autolock lock(mLock);
2033    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
2034
2035    //ALOGV("write(%p, %u)", buffer, size);
2036    if (mTrack != 0) {
2037        return mTrack->write(buffer, size, blocking);
2038    }
2039    return NO_INIT;
2040}
2041
2042void MediaPlayerService::AudioOutput::stop()
2043{
2044    ALOGV("stop");
2045    Mutex::Autolock lock(mLock);
2046    if (mTrack != 0) mTrack->stop();
2047}
2048
2049void MediaPlayerService::AudioOutput::flush()
2050{
2051    ALOGV("flush");
2052    Mutex::Autolock lock(mLock);
2053    if (mTrack != 0) mTrack->flush();
2054}
2055
2056void MediaPlayerService::AudioOutput::pause()
2057{
2058    ALOGV("pause");
2059    Mutex::Autolock lock(mLock);
2060    if (mTrack != 0) mTrack->pause();
2061}
2062
2063void MediaPlayerService::AudioOutput::close()
2064{
2065    ALOGV("close");
2066    sp<AudioTrack> track;
2067    {
2068        Mutex::Autolock lock(mLock);
2069        track = mTrack;
2070        close_l(); // clears mTrack
2071    }
2072    // destruction of the track occurs outside of mutex.
2073}
2074
2075void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2076{
2077    ALOGV("setVolume(%f, %f)", left, right);
2078    Mutex::Autolock lock(mLock);
2079    mLeftVolume = left;
2080    mRightVolume = right;
2081    if (mTrack != 0) {
2082        mTrack->setVolume(left, right);
2083    }
2084}
2085
2086status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2087{
2088    ALOGV("setPlaybackRate(%f %f %d %d)",
2089                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2090    Mutex::Autolock lock(mLock);
2091    if (mTrack == 0) {
2092        // remember rate so that we can set it when the track is opened
2093        mPlaybackRate = rate;
2094        return OK;
2095    }
2096    status_t res = mTrack->setPlaybackRate(rate);
2097    if (res != NO_ERROR) {
2098        return res;
2099    }
2100    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2101    CHECK_GT(rate.mSpeed, 0.f);
2102    mPlaybackRate = rate;
2103    if (mSampleRateHz != 0) {
2104        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2105    }
2106    return res;
2107}
2108
2109status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2110{
2111    ALOGV("setPlaybackRate");
2112    Mutex::Autolock lock(mLock);
2113    if (mTrack == 0) {
2114        return NO_INIT;
2115    }
2116    *rate = mTrack->getPlaybackRate();
2117    return NO_ERROR;
2118}
2119
2120status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2121{
2122    ALOGV("setAuxEffectSendLevel(%f)", level);
2123    Mutex::Autolock lock(mLock);
2124    mSendLevel = level;
2125    if (mTrack != 0) {
2126        return mTrack->setAuxEffectSendLevel(level);
2127    }
2128    return NO_ERROR;
2129}
2130
2131status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2132{
2133    ALOGV("attachAuxEffect(%d)", effectId);
2134    Mutex::Autolock lock(mLock);
2135    mAuxEffectId = effectId;
2136    if (mTrack != 0) {
2137        return mTrack->attachAuxEffect(effectId);
2138    }
2139    return NO_ERROR;
2140}
2141
2142// static
2143void MediaPlayerService::AudioOutput::CallbackWrapper(
2144        int event, void *cookie, void *info) {
2145    //ALOGV("callbackwrapper");
2146    CallbackData *data = (CallbackData*)cookie;
2147    // lock to ensure we aren't caught in the middle of a track switch.
2148    data->lock();
2149    AudioOutput *me = data->getOutput();
2150    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2151    if (me == NULL) {
2152        // no output set, likely because the track was scheduled to be reused
2153        // by another player, but the format turned out to be incompatible.
2154        data->unlock();
2155        if (buffer != NULL) {
2156            buffer->size = 0;
2157        }
2158        return;
2159    }
2160
2161    switch(event) {
2162    case AudioTrack::EVENT_MORE_DATA: {
2163        size_t actualSize = (*me->mCallback)(
2164                me, buffer->raw, buffer->size, me->mCallbackCookie,
2165                CB_EVENT_FILL_BUFFER);
2166
2167        // Log when no data is returned from the callback.
2168        // (1) We may have no data (especially with network streaming sources).
2169        // (2) We may have reached the EOS and the audio track is not stopped yet.
2170        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2171        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2172        //
2173        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2174        // nevertheless for power reasons, we don't want to see too many of these.
2175
2176        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2177
2178        buffer->size = actualSize;
2179        } break;
2180
2181    case AudioTrack::EVENT_STREAM_END:
2182        // currently only occurs for offloaded callbacks
2183        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2184        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2185                me->mCallbackCookie, CB_EVENT_STREAM_END);
2186        break;
2187
2188    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2189        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2190        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2191                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2192        break;
2193
2194    case AudioTrack::EVENT_UNDERRUN:
2195        // This occurs when there is no data available, typically
2196        // when there is a failure to supply data to the AudioTrack.  It can also
2197        // occur in non-offloaded mode when the audio device comes out of standby.
2198        //
2199        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2200        // it may sound like an audible pop or glitch.
2201        //
2202        // The underrun event is sent once per track underrun; the condition is reset
2203        // when more data is sent to the AudioTrack.
2204        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2205        break;
2206
2207    default:
2208        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2209    }
2210
2211    data->unlock();
2212}
2213
2214audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2215{
2216    Mutex::Autolock lock(mLock);
2217    return mSessionId;
2218}
2219
2220uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2221{
2222    Mutex::Autolock lock(mLock);
2223    if (mTrack == 0) return 0;
2224    return mTrack->getSampleRate();
2225}
2226
2227int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2228{
2229    Mutex::Autolock lock(mLock);
2230    if (mTrack == 0) {
2231        return 0;
2232    }
2233    int64_t duration;
2234    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2235        return 0;
2236    }
2237    return duration;
2238}
2239
2240////////////////////////////////////////////////////////////////////////////////
2241
2242struct CallbackThread : public Thread {
2243    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2244                   MediaPlayerBase::AudioSink::AudioCallback cb,
2245                   void *cookie);
2246
2247protected:
2248    virtual ~CallbackThread();
2249
2250    virtual bool threadLoop();
2251
2252private:
2253    wp<MediaPlayerBase::AudioSink> mSink;
2254    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2255    void *mCookie;
2256    void *mBuffer;
2257    size_t mBufferSize;
2258
2259    CallbackThread(const CallbackThread &);
2260    CallbackThread &operator=(const CallbackThread &);
2261};
2262
2263CallbackThread::CallbackThread(
2264        const wp<MediaPlayerBase::AudioSink> &sink,
2265        MediaPlayerBase::AudioSink::AudioCallback cb,
2266        void *cookie)
2267    : mSink(sink),
2268      mCallback(cb),
2269      mCookie(cookie),
2270      mBuffer(NULL),
2271      mBufferSize(0) {
2272}
2273
2274CallbackThread::~CallbackThread() {
2275    if (mBuffer) {
2276        free(mBuffer);
2277        mBuffer = NULL;
2278    }
2279}
2280
2281bool CallbackThread::threadLoop() {
2282    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2283    if (sink == NULL) {
2284        return false;
2285    }
2286
2287    if (mBuffer == NULL) {
2288        mBufferSize = sink->bufferSize();
2289        mBuffer = malloc(mBufferSize);
2290    }
2291
2292    size_t actualSize =
2293        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2294                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2295
2296    if (actualSize > 0) {
2297        sink->write(mBuffer, actualSize);
2298        // Could return false on sink->write() error or short count.
2299        // Not necessarily appropriate but would work for AudioCache behavior.
2300    }
2301
2302    return true;
2303}
2304
2305////////////////////////////////////////////////////////////////////////////////
2306
2307void MediaPlayerService::addBatteryData(uint32_t params)
2308{
2309    Mutex::Autolock lock(mLock);
2310
2311    int32_t time = systemTime() / 1000000L;
2312
2313    // change audio output devices. This notification comes from AudioFlinger
2314    if ((params & kBatteryDataSpeakerOn)
2315            || (params & kBatteryDataOtherAudioDeviceOn)) {
2316
2317        int deviceOn[NUM_AUDIO_DEVICES];
2318        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2319            deviceOn[i] = 0;
2320        }
2321
2322        if ((params & kBatteryDataSpeakerOn)
2323                && (params & kBatteryDataOtherAudioDeviceOn)) {
2324            deviceOn[SPEAKER_AND_OTHER] = 1;
2325        } else if (params & kBatteryDataSpeakerOn) {
2326            deviceOn[SPEAKER] = 1;
2327        } else {
2328            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2329        }
2330
2331        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2332            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2333
2334                if (mBatteryAudio.refCount > 0) { // if playing audio
2335                    if (!deviceOn[i]) {
2336                        mBatteryAudio.lastTime[i] += time;
2337                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2338                        mBatteryAudio.lastTime[i] = 0;
2339                    } else {
2340                        mBatteryAudio.lastTime[i] = 0 - time;
2341                    }
2342                }
2343
2344                mBatteryAudio.deviceOn[i] = deviceOn[i];
2345            }
2346        }
2347        return;
2348    }
2349
2350    // an audio stream is started
2351    if (params & kBatteryDataAudioFlingerStart) {
2352        // record the start time only if currently no other audio
2353        // is being played
2354        if (mBatteryAudio.refCount == 0) {
2355            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2356                if (mBatteryAudio.deviceOn[i]) {
2357                    mBatteryAudio.lastTime[i] -= time;
2358                }
2359            }
2360        }
2361
2362        mBatteryAudio.refCount ++;
2363        return;
2364
2365    } else if (params & kBatteryDataAudioFlingerStop) {
2366        if (mBatteryAudio.refCount <= 0) {
2367            ALOGW("Battery track warning: refCount is <= 0");
2368            return;
2369        }
2370
2371        // record the stop time only if currently this is the only
2372        // audio being played
2373        if (mBatteryAudio.refCount == 1) {
2374            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2375                if (mBatteryAudio.deviceOn[i]) {
2376                    mBatteryAudio.lastTime[i] += time;
2377                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2378                    mBatteryAudio.lastTime[i] = 0;
2379                }
2380            }
2381        }
2382
2383        mBatteryAudio.refCount --;
2384        return;
2385    }
2386
2387    int uid = IPCThreadState::self()->getCallingUid();
2388    if (uid == AID_MEDIA) {
2389        return;
2390    }
2391    int index = mBatteryData.indexOfKey(uid);
2392
2393    if (index < 0) { // create a new entry for this UID
2394        BatteryUsageInfo info;
2395        info.audioTotalTime = 0;
2396        info.videoTotalTime = 0;
2397        info.audioLastTime = 0;
2398        info.videoLastTime = 0;
2399        info.refCount = 0;
2400
2401        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2402            ALOGE("Battery track error: no memory for new app");
2403            return;
2404        }
2405    }
2406
2407    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2408
2409    if (params & kBatteryDataCodecStarted) {
2410        if (params & kBatteryDataTrackAudio) {
2411            info.audioLastTime -= time;
2412            info.refCount ++;
2413        }
2414        if (params & kBatteryDataTrackVideo) {
2415            info.videoLastTime -= time;
2416            info.refCount ++;
2417        }
2418    } else {
2419        if (info.refCount == 0) {
2420            ALOGW("Battery track warning: refCount is already 0");
2421            return;
2422        } else if (info.refCount < 0) {
2423            ALOGE("Battery track error: refCount < 0");
2424            mBatteryData.removeItem(uid);
2425            return;
2426        }
2427
2428        if (params & kBatteryDataTrackAudio) {
2429            info.audioLastTime += time;
2430            info.refCount --;
2431        }
2432        if (params & kBatteryDataTrackVideo) {
2433            info.videoLastTime += time;
2434            info.refCount --;
2435        }
2436
2437        // no stream is being played by this UID
2438        if (info.refCount == 0) {
2439            info.audioTotalTime += info.audioLastTime;
2440            info.audioLastTime = 0;
2441            info.videoTotalTime += info.videoLastTime;
2442            info.videoLastTime = 0;
2443        }
2444    }
2445}
2446
2447status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2448    Mutex::Autolock lock(mLock);
2449
2450    // audio output devices usage
2451    int32_t time = systemTime() / 1000000L; //in ms
2452    int32_t totalTime;
2453
2454    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2455        totalTime = mBatteryAudio.totalTime[i];
2456
2457        if (mBatteryAudio.deviceOn[i]
2458            && (mBatteryAudio.lastTime[i] != 0)) {
2459                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2460                totalTime += tmpTime;
2461        }
2462
2463        reply->writeInt32(totalTime);
2464        // reset the total time
2465        mBatteryAudio.totalTime[i] = 0;
2466   }
2467
2468    // codec usage
2469    BatteryUsageInfo info;
2470    int size = mBatteryData.size();
2471
2472    reply->writeInt32(size);
2473    int i = 0;
2474
2475    while (i < size) {
2476        info = mBatteryData.valueAt(i);
2477
2478        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2479        reply->writeInt32(info.audioTotalTime);
2480        reply->writeInt32(info.videoTotalTime);
2481
2482        info.audioTotalTime = 0;
2483        info.videoTotalTime = 0;
2484
2485        // remove the UID entry where no stream is being played
2486        if (info.refCount <= 0) {
2487            mBatteryData.removeItemsAt(i);
2488            size --;
2489            i --;
2490        }
2491        i++;
2492    }
2493    return NO_ERROR;
2494}
2495} // namespace android
2496