MediaPlayerService.cpp revision d1c74340c9346e2bfd061e20fba9bf34c22d77db 
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/IMediaHTTPService.h>
49#include <media/IRemoteDisplay.h>
50#include <media/IRemoteDisplayClient.h>
51#include <media/MediaPlayerInterface.h>
52#include <media/mediarecorder.h>
53#include <media/MediaMetadataRetrieverInterface.h>
54#include <media/Metadata.h>
55#include <media/AudioTrack.h>
56#include <media/MemoryLeakTrackUtil.h>
57#include <media/stagefright/MediaCodecList.h>
58#include <media/stagefright/MediaErrors.h>
59#include <media/stagefright/AudioPlayer.h>
60#include <media/stagefright/foundation/ADebug.h>
61#include <media/stagefright/foundation/ALooperRoster.h>
62#include <mediautils/BatteryNotifier.h>
63
64#include <system/audio.h>
65
66#include <private/android_filesystem_config.h>
67
68#include "ActivityManager.h"
69#include "MediaRecorderClient.h"
70#include "MediaPlayerService.h"
71#include "MetadataRetrieverClient.h"
72#include "MediaPlayerFactory.h"
73
74#include "TestPlayerStub.h"
75#include "StagefrightPlayer.h"
76#include "nuplayer/NuPlayerDriver.h"
77
78#include <OMX.h>
79
80#include "Crypto.h"
81#include "Drm.h"
82#include "HDCP.h"
83#include "HTTPBase.h"
84#include "RemoteDisplay.h"
85
86namespace {
87using android::media::Metadata;
88using android::status_t;
89using android::OK;
90using android::BAD_VALUE;
91using android::NOT_ENOUGH_DATA;
92using android::Parcel;
93
94// Max number of entries in the filter.
95const int kMaxFilterSize = 64;  // I pulled that out of thin air.
96
97// FIXME: Move all the metadata related function in the Metadata.cpp
98
99
100// Unmarshall a filter from a Parcel.
101// Filter format in a parcel:
102//
103//  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
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       number of entries (n)                   |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107// |                       metadata type 1                         |
108// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
109// |                       metadata type 2                         |
110// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111//  ....
112// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113// |                       metadata type n                         |
114// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
115//
116// @param p Parcel that should start with a filter.
117// @param[out] filter On exit contains the list of metadata type to be
118//                    filtered.
119// @param[out] status On exit contains the status code to be returned.
120// @return true if the parcel starts with a valid filter.
121bool unmarshallFilter(const Parcel& p,
122                      Metadata::Filter *filter,
123                      status_t *status)
124{
125    int32_t val;
126    if (p.readInt32(&val) != OK)
127    {
128        ALOGE("Failed to read filter's length");
129        *status = NOT_ENOUGH_DATA;
130        return false;
131    }
132
133    if( val > kMaxFilterSize || val < 0)
134    {
135        ALOGE("Invalid filter len %d", val);
136        *status = BAD_VALUE;
137        return false;
138    }
139
140    const size_t num = val;
141
142    filter->clear();
143    filter->setCapacity(num);
144
145    size_t size = num * sizeof(Metadata::Type);
146
147
148    if (p.dataAvail() < size)
149    {
150        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
151        *status = NOT_ENOUGH_DATA;
152        return false;
153    }
154
155    const Metadata::Type *data =
156            static_cast<const Metadata::Type*>(p.readInplace(size));
157
158    if (NULL == data)
159    {
160        ALOGE("Filter had no data");
161        *status = BAD_VALUE;
162        return false;
163    }
164
165    // TODO: The stl impl of vector would be more efficient here
166    // because it degenerates into a memcpy on pod types. Try to
167    // replace later or use stl::set.
168    for (size_t i = 0; i < num; ++i)
169    {
170        filter->add(*data);
171        ++data;
172    }
173    *status = OK;
174    return true;
175}
176
177// @param filter Of metadata type.
178// @param val To be searched.
179// @return true if a match was found.
180bool findMetadata(const Metadata::Filter& filter, const int32_t val)
181{
182    // Deal with empty and ANY right away
183    if (filter.isEmpty()) return false;
184    if (filter[0] == Metadata::kAny) return true;
185
186    return filter.indexOf(val) >= 0;
187}
188
189}  // anonymous namespace
190
191
192namespace {
193using android::Parcel;
194using android::String16;
195
196// marshalling tag indicating flattened utf16 tags
197// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
198const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
199
200// Audio attributes format in a parcel:
201//
202//  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
203// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
204// |                       usage                                   |
205// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
206// |                       content_type                            |
207// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
208// |                       source                                  |
209// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
210// |                       flags                                   |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214// |                       flattened tags in UTF16                 |
215// |                         ...                                   |
216// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
217//
218// @param p Parcel that contains audio attributes.
219// @param[out] attributes On exit points to an initialized audio_attributes_t structure
220// @param[out] status On exit contains the status code to be returned.
221void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
222{
223    attributes->usage = (audio_usage_t) parcel.readInt32();
224    attributes->content_type = (audio_content_type_t) parcel.readInt32();
225    attributes->source = (audio_source_t) parcel.readInt32();
226    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
227    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
228    if (hasFlattenedTag) {
229        // the tags are UTF16, convert to UTF8
230        String16 tags = parcel.readString16();
231        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
232        if (realTagSize <= 0) {
233            strcpy(attributes->tags, "");
234        } else {
235            // copy the flattened string into the attributes as the destination for the conversion:
236            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
237            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
238                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
239            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
240        }
241    } else {
242        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
243        strcpy(attributes->tags, "");
244    }
245}
246} // anonymous namespace
247
248
249namespace android {
250
251extern ALooperRoster gLooperRoster;
252
253
254static bool checkPermission(const char* permissionString) {
255#ifndef HAVE_ANDROID_OS
256    return true;
257#endif
258    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
259    bool ok = checkCallingPermission(String16(permissionString));
260    if (!ok) ALOGE("Request requires %s", permissionString);
261    return ok;
262}
263
264// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
265/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
266/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
267
268void MediaPlayerService::instantiate() {
269    defaultServiceManager()->addService(
270            String16("media.player"), new MediaPlayerService());
271}
272
273MediaPlayerService::MediaPlayerService()
274{
275    ALOGV("MediaPlayerService created");
276    mNextConnId = 1;
277
278    mBatteryAudio.refCount = 0;
279    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
280        mBatteryAudio.deviceOn[i] = 0;
281        mBatteryAudio.lastTime[i] = 0;
282        mBatteryAudio.totalTime[i] = 0;
283    }
284    // speaker is on by default
285    mBatteryAudio.deviceOn[SPEAKER] = 1;
286
287    // reset battery stats
288    // if the mediaserver has crashed, battery stats could be left
289    // in bad state, reset the state upon service start.
290    BatteryNotifier& notifier(BatteryNotifier::getInstance());
291    notifier.noteResetVideo();
292    notifier.noteResetAudio();
293
294    MediaPlayerFactory::registerBuiltinFactories();
295}
296
297MediaPlayerService::~MediaPlayerService()
298{
299    ALOGV("MediaPlayerService destroyed");
300}
301
302sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
303{
304    pid_t pid = IPCThreadState::self()->getCallingPid();
305    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
306    wp<MediaRecorderClient> w = recorder;
307    Mutex::Autolock lock(mLock);
308    mMediaRecorderClients.add(w);
309    ALOGV("Create new media recorder client from pid %d", pid);
310    return recorder;
311}
312
313void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
314{
315    Mutex::Autolock lock(mLock);
316    mMediaRecorderClients.remove(client);
317    ALOGV("Delete media recorder client");
318}
319
320sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
321{
322    pid_t pid = IPCThreadState::self()->getCallingPid();
323    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
324    ALOGV("Create new media retriever from pid %d", pid);
325    return retriever;
326}
327
328sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
329        int audioSessionId)
330{
331    pid_t pid = IPCThreadState::self()->getCallingPid();
332    int32_t connId = android_atomic_inc(&mNextConnId);
333
334    sp<Client> c = new Client(
335            this, pid, connId, client, audioSessionId,
336            IPCThreadState::self()->getCallingUid());
337
338    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
339         IPCThreadState::self()->getCallingUid());
340
341    wp<Client> w = c;
342    {
343        Mutex::Autolock lock(mLock);
344        mClients.add(w);
345    }
346    return c;
347}
348
349sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
350    return MediaCodecList::getLocalInstance();
351}
352
353sp<IOMX> MediaPlayerService::getOMX() {
354    Mutex::Autolock autoLock(mLock);
355
356    if (mOMX.get() == NULL) {
357        mOMX = new OMX;
358    }
359
360    return mOMX;
361}
362
363sp<ICrypto> MediaPlayerService::makeCrypto() {
364    return new Crypto;
365}
366
367sp<IDrm> MediaPlayerService::makeDrm() {
368    return new Drm;
369}
370
371sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
372    return new HDCP(createEncryptionModule);
373}
374
375sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
376        const String16 &opPackageName,
377        const sp<IRemoteDisplayClient>& client, const String8& iface) {
378    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
379        return NULL;
380    }
381
382    return new RemoteDisplay(opPackageName, client, iface.string());
383}
384
385status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
386{
387    const size_t SIZE = 256;
388    char buffer[SIZE];
389    String8 result;
390
391    result.append(" AudioOutput\n");
392    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
393            mStreamType, mLeftVolume, mRightVolume);
394    result.append(buffer);
395    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
396            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
397    result.append(buffer);
398    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
399            mAuxEffectId, mSendLevel);
400    result.append(buffer);
401
402    ::write(fd, result.string(), result.size());
403    if (mTrack != 0) {
404        mTrack->dump(fd, args);
405    }
406    return NO_ERROR;
407}
408
409status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
410{
411    const size_t SIZE = 256;
412    char buffer[SIZE];
413    String8 result;
414    result.append(" Client\n");
415    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
416            mPid, mConnId, mStatus, mLoop?"true": "false");
417    result.append(buffer);
418    write(fd, result.string(), result.size());
419    if (mPlayer != NULL) {
420        mPlayer->dump(fd, args);
421    }
422    if (mAudioOutput != 0) {
423        mAudioOutput->dump(fd, args);
424    }
425    write(fd, "\n", 1);
426    return NO_ERROR;
427}
428
429/**
430 * The only arguments this understands right now are -c, -von and -voff,
431 * which are parsed by ALooperRoster::dump()
432 */
433status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
434{
435    const size_t SIZE = 256;
436    char buffer[SIZE];
437    String8 result;
438    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
439    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
440
441    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
442        snprintf(buffer, SIZE, "Permission Denial: "
443                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
444                IPCThreadState::self()->getCallingPid(),
445                IPCThreadState::self()->getCallingUid());
446        result.append(buffer);
447    } else {
448        Mutex::Autolock lock(mLock);
449        for (int i = 0, n = mClients.size(); i < n; ++i) {
450            sp<Client> c = mClients[i].promote();
451            if (c != 0) c->dump(fd, args);
452            clients.add(c);
453        }
454        if (mMediaRecorderClients.size() == 0) {
455                result.append(" No media recorder client\n\n");
456        } else {
457            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
458                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
459                if (c != 0) {
460                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
461                    result.append(buffer);
462                    write(fd, result.string(), result.size());
463                    result = "\n";
464                    c->dump(fd, args);
465                    mediaRecorderClients.add(c);
466                }
467            }
468        }
469
470        result.append(" Files opened and/or mapped:\n");
471        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
472        FILE *f = fopen(buffer, "r");
473        if (f) {
474            while (!feof(f)) {
475                fgets(buffer, SIZE, f);
476                if (strstr(buffer, " /storage/") ||
477                    strstr(buffer, " /system/sounds/") ||
478                    strstr(buffer, " /data/") ||
479                    strstr(buffer, " /system/media/")) {
480                    result.append("  ");
481                    result.append(buffer);
482                }
483            }
484            fclose(f);
485        } else {
486            result.append("couldn't open ");
487            result.append(buffer);
488            result.append("\n");
489        }
490
491        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
492        DIR *d = opendir(buffer);
493        if (d) {
494            struct dirent *ent;
495            while((ent = readdir(d)) != NULL) {
496                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
497                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
498                    struct stat s;
499                    if (lstat(buffer, &s) == 0) {
500                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
501                            char linkto[256];
502                            int len = readlink(buffer, linkto, sizeof(linkto));
503                            if(len > 0) {
504                                if(len > 255) {
505                                    linkto[252] = '.';
506                                    linkto[253] = '.';
507                                    linkto[254] = '.';
508                                    linkto[255] = 0;
509                                } else {
510                                    linkto[len] = 0;
511                                }
512                                if (strstr(linkto, "/storage/") == linkto ||
513                                    strstr(linkto, "/system/sounds/") == linkto ||
514                                    strstr(linkto, "/data/") == linkto ||
515                                    strstr(linkto, "/system/media/") == linkto) {
516                                    result.append("  ");
517                                    result.append(buffer);
518                                    result.append(" -> ");
519                                    result.append(linkto);
520                                    result.append("\n");
521                                }
522                            }
523                        } else {
524                            result.append("  unexpected type for ");
525                            result.append(buffer);
526                            result.append("\n");
527                        }
528                    }
529                }
530            }
531            closedir(d);
532        } else {
533            result.append("couldn't open ");
534            result.append(buffer);
535            result.append("\n");
536        }
537
538        gLooperRoster.dump(fd, args);
539
540        bool dumpMem = false;
541        for (size_t i = 0; i < args.size(); i++) {
542            if (args[i] == String16("-m")) {
543                dumpMem = true;
544            }
545        }
546        if (dumpMem) {
547            dumpMemoryAddresses(fd);
548        }
549    }
550    write(fd, result.string(), result.size());
551    return NO_ERROR;
552}
553
554void MediaPlayerService::removeClient(wp<Client> client)
555{
556    Mutex::Autolock lock(mLock);
557    mClients.remove(client);
558}
559
560MediaPlayerService::Client::Client(
561        const sp<MediaPlayerService>& service, pid_t pid,
562        int32_t connId, const sp<IMediaPlayerClient>& client,
563        int audioSessionId, uid_t uid)
564{
565    ALOGV("Client(%d) constructor", connId);
566    mPid = pid;
567    mConnId = connId;
568    mService = service;
569    mClient = client;
570    mLoop = false;
571    mStatus = NO_INIT;
572    mAudioSessionId = audioSessionId;
573    mUID = uid;
574    mRetransmitEndpointValid = false;
575    mAudioAttributes = NULL;
576
577#if CALLBACK_ANTAGONIZER
578    ALOGD("create Antagonizer");
579    mAntagonizer = new Antagonizer(notify, this);
580#endif
581}
582
583MediaPlayerService::Client::~Client()
584{
585    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
586    mAudioOutput.clear();
587    wp<Client> client(this);
588    disconnect();
589    mService->removeClient(client);
590    if (mAudioAttributes != NULL) {
591        free(mAudioAttributes);
592    }
593}
594
595void MediaPlayerService::Client::disconnect()
596{
597    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
598    // grab local reference and clear main reference to prevent future
599    // access to object
600    sp<MediaPlayerBase> p;
601    {
602        Mutex::Autolock l(mLock);
603        p = mPlayer;
604        mClient.clear();
605    }
606
607    mPlayer.clear();
608
609    // clear the notification to prevent callbacks to dead client
610    // and reset the player. We assume the player will serialize
611    // access to itself if necessary.
612    if (p != 0) {
613        p->setNotifyCallback(0, 0);
614#if CALLBACK_ANTAGONIZER
615        ALOGD("kill Antagonizer");
616        mAntagonizer->kill();
617#endif
618        p->reset();
619    }
620
621    disconnectNativeWindow();
622
623    IPCThreadState::self()->flushCommands();
624}
625
626sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
627{
628    // determine if we have the right player type
629    sp<MediaPlayerBase> p = mPlayer;
630    if ((p != NULL) && (p->playerType() != playerType)) {
631        ALOGV("delete player");
632        p.clear();
633    }
634    if (p == NULL) {
635        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
636    }
637
638    if (p != NULL) {
639        p->setUID(mUID);
640    }
641
642    return p;
643}
644
645sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
646        player_type playerType)
647{
648    ALOGV("player type = %d", playerType);
649
650    // create the right type of player
651    sp<MediaPlayerBase> p = createPlayer(playerType);
652    if (p == NULL) {
653        return p;
654    }
655
656    if (!p->hardwareOutput()) {
657        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
658                mPid, mAudioAttributes);
659        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
660    }
661
662    return p;
663}
664
665void MediaPlayerService::Client::setDataSource_post(
666        const sp<MediaPlayerBase>& p,
667        status_t status)
668{
669    ALOGV(" setDataSource");
670    mStatus = status;
671    if (mStatus != OK) {
672        ALOGE("  error: %d", mStatus);
673        return;
674    }
675
676    // Set the re-transmission endpoint if one was chosen.
677    if (mRetransmitEndpointValid) {
678        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
679        if (mStatus != NO_ERROR) {
680            ALOGE("setRetransmitEndpoint error: %d", mStatus);
681        }
682    }
683
684    if (mStatus == OK) {
685        mPlayer = p;
686    }
687}
688
689status_t MediaPlayerService::Client::setDataSource(
690        const sp<IMediaHTTPService> &httpService,
691        const char *url,
692        const KeyedVector<String8, String8> *headers)
693{
694    ALOGV("setDataSource(%s)", url);
695    if (url == NULL)
696        return UNKNOWN_ERROR;
697
698    if ((strncmp(url, "http://", 7) == 0) ||
699        (strncmp(url, "https://", 8) == 0) ||
700        (strncmp(url, "rtsp://", 7) == 0)) {
701        if (!checkPermission("android.permission.INTERNET")) {
702            return PERMISSION_DENIED;
703        }
704    }
705
706    if (strncmp(url, "content://", 10) == 0) {
707        // get a filedescriptor for the content Uri and
708        // pass it to the setDataSource(fd) method
709
710        String16 url16(url);
711        int fd = android::openContentProviderFile(url16);
712        if (fd < 0)
713        {
714            ALOGE("Couldn't open fd for %s", url);
715            return UNKNOWN_ERROR;
716        }
717        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
718        close(fd);
719        return mStatus;
720    } else {
721        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
722        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
723        if (p == NULL) {
724            return NO_INIT;
725        }
726
727        setDataSource_post(p, p->setDataSource(httpService, url, headers));
728        return mStatus;
729    }
730}
731
732status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
733{
734    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
735    struct stat sb;
736    int ret = fstat(fd, &sb);
737    if (ret != 0) {
738        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
739        return UNKNOWN_ERROR;
740    }
741
742    ALOGV("st_dev  = %llu", static_cast<uint64_t>(sb.st_dev));
743    ALOGV("st_mode = %u", sb.st_mode);
744    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
745    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
746    ALOGV("st_size = %llu", sb.st_size);
747
748    if (offset >= sb.st_size) {
749        ALOGE("offset error");
750        ::close(fd);
751        return UNKNOWN_ERROR;
752    }
753    if (offset + length > sb.st_size) {
754        length = sb.st_size - offset;
755        ALOGV("calculated length = %lld", length);
756    }
757
758    player_type playerType = MediaPlayerFactory::getPlayerType(this,
759                                                               fd,
760                                                               offset,
761                                                               length);
762    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
763    if (p == NULL) {
764        return NO_INIT;
765    }
766
767    // now set data source
768    setDataSource_post(p, p->setDataSource(fd, offset, length));
769    return mStatus;
770}
771
772status_t MediaPlayerService::Client::setDataSource(
773        const sp<IStreamSource> &source) {
774    // create the right type of player
775    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
776    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
777    if (p == NULL) {
778        return NO_INIT;
779    }
780
781    // now set data source
782    setDataSource_post(p, p->setDataSource(source));
783    return mStatus;
784}
785
786status_t MediaPlayerService::Client::setDataSource(
787        const sp<IDataSource> &source) {
788    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
789    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
790    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
791    if (p == NULL) {
792        return NO_INIT;
793    }
794    // now set data source
795    setDataSource_post(p, p->setDataSource(dataSource));
796    return mStatus;
797}
798
799void MediaPlayerService::Client::disconnectNativeWindow() {
800    if (mConnectedWindow != NULL) {
801        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
802                NATIVE_WINDOW_API_MEDIA);
803
804        if (err != OK) {
805            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
806                    strerror(-err), err);
807        }
808    }
809    mConnectedWindow.clear();
810}
811
812status_t MediaPlayerService::Client::setVideoSurfaceTexture(
813        const sp<IGraphicBufferProducer>& bufferProducer)
814{
815    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
816    sp<MediaPlayerBase> p = getPlayer();
817    if (p == 0) return UNKNOWN_ERROR;
818
819    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
820    if (mConnectedWindowBinder == binder) {
821        return OK;
822    }
823
824    sp<ANativeWindow> anw;
825    if (bufferProducer != NULL) {
826        anw = new Surface(bufferProducer, true /* controlledByApp */);
827        status_t err = native_window_api_connect(anw.get(),
828                NATIVE_WINDOW_API_MEDIA);
829
830        if (err != OK) {
831            ALOGE("setVideoSurfaceTexture failed: %d", err);
832            // Note that we must do the reset before disconnecting from the ANW.
833            // Otherwise queue/dequeue calls could be made on the disconnected
834            // ANW, which may result in errors.
835            reset();
836
837            disconnectNativeWindow();
838
839            return err;
840        }
841    }
842
843    // Note that we must set the player's new GraphicBufferProducer before
844    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
845    // on the disconnected ANW, which may result in errors.
846    status_t err = p->setVideoSurfaceTexture(bufferProducer);
847
848    disconnectNativeWindow();
849
850    mConnectedWindow = anw;
851
852    if (err == OK) {
853        mConnectedWindowBinder = binder;
854    } else {
855        disconnectNativeWindow();
856    }
857
858    return err;
859}
860
861status_t MediaPlayerService::Client::invoke(const Parcel& request,
862                                            Parcel *reply)
863{
864    sp<MediaPlayerBase> p = getPlayer();
865    if (p == NULL) return UNKNOWN_ERROR;
866    return p->invoke(request, reply);
867}
868
869// This call doesn't need to access the native player.
870status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
871{
872    status_t status;
873    media::Metadata::Filter allow, drop;
874
875    if (unmarshallFilter(filter, &allow, &status) &&
876        unmarshallFilter(filter, &drop, &status)) {
877        Mutex::Autolock lock(mLock);
878
879        mMetadataAllow = allow;
880        mMetadataDrop = drop;
881    }
882    return status;
883}
884
885status_t MediaPlayerService::Client::getMetadata(
886        bool update_only, bool /*apply_filter*/, Parcel *reply)
887{
888    sp<MediaPlayerBase> player = getPlayer();
889    if (player == 0) return UNKNOWN_ERROR;
890
891    status_t status;
892    // Placeholder for the return code, updated by the caller.
893    reply->writeInt32(-1);
894
895    media::Metadata::Filter ids;
896
897    // We don't block notifications while we fetch the data. We clear
898    // mMetadataUpdated first so we don't lose notifications happening
899    // during the rest of this call.
900    {
901        Mutex::Autolock lock(mLock);
902        if (update_only) {
903            ids = mMetadataUpdated;
904        }
905        mMetadataUpdated.clear();
906    }
907
908    media::Metadata metadata(reply);
909
910    metadata.appendHeader();
911    status = player->getMetadata(ids, reply);
912
913    if (status != OK) {
914        metadata.resetParcel();
915        ALOGE("getMetadata failed %d", status);
916        return status;
917    }
918
919    // FIXME: Implement filtering on the result. Not critical since
920    // filtering takes place on the update notifications already. This
921    // would be when all the metadata are fetch and a filter is set.
922
923    // Everything is fine, update the metadata length.
924    metadata.updateLength();
925    return OK;
926}
927
928status_t MediaPlayerService::Client::prepareAsync()
929{
930    ALOGV("[%d] prepareAsync", mConnId);
931    sp<MediaPlayerBase> p = getPlayer();
932    if (p == 0) return UNKNOWN_ERROR;
933    status_t ret = p->prepareAsync();
934#if CALLBACK_ANTAGONIZER
935    ALOGD("start Antagonizer");
936    if (ret == NO_ERROR) mAntagonizer->start();
937#endif
938    return ret;
939}
940
941status_t MediaPlayerService::Client::start()
942{
943    ALOGV("[%d] start", mConnId);
944    sp<MediaPlayerBase> p = getPlayer();
945    if (p == 0) return UNKNOWN_ERROR;
946    p->setLooping(mLoop);
947    return p->start();
948}
949
950status_t MediaPlayerService::Client::stop()
951{
952    ALOGV("[%d] stop", mConnId);
953    sp<MediaPlayerBase> p = getPlayer();
954    if (p == 0) return UNKNOWN_ERROR;
955    return p->stop();
956}
957
958status_t MediaPlayerService::Client::pause()
959{
960    ALOGV("[%d] pause", mConnId);
961    sp<MediaPlayerBase> p = getPlayer();
962    if (p == 0) return UNKNOWN_ERROR;
963    return p->pause();
964}
965
966status_t MediaPlayerService::Client::isPlaying(bool* state)
967{
968    *state = false;
969    sp<MediaPlayerBase> p = getPlayer();
970    if (p == 0) return UNKNOWN_ERROR;
971    *state = p->isPlaying();
972    ALOGV("[%d] isPlaying: %d", mConnId, *state);
973    return NO_ERROR;
974}
975
976status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
977{
978    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
979            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    return p->setPlaybackSettings(rate);
983}
984
985status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
986{
987    sp<MediaPlayerBase> p = getPlayer();
988    if (p == 0) return UNKNOWN_ERROR;
989    status_t ret = p->getPlaybackSettings(rate);
990    if (ret == NO_ERROR) {
991        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
992                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
993    } else {
994        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
995    }
996    return ret;
997}
998
999status_t MediaPlayerService::Client::setSyncSettings(
1000        const AVSyncSettings& sync, float videoFpsHint)
1001{
1002    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1003            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1004    sp<MediaPlayerBase> p = getPlayer();
1005    if (p == 0) return UNKNOWN_ERROR;
1006    return p->setSyncSettings(sync, videoFpsHint);
1007}
1008
1009status_t MediaPlayerService::Client::getSyncSettings(
1010        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1011{
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014    status_t ret = p->getSyncSettings(sync, videoFps);
1015    if (ret == NO_ERROR) {
1016        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1017                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1018    } else {
1019        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1020    }
1021    return ret;
1022}
1023
1024status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1025{
1026    ALOGV("getCurrentPosition");
1027    sp<MediaPlayerBase> p = getPlayer();
1028    if (p == 0) return UNKNOWN_ERROR;
1029    status_t ret = p->getCurrentPosition(msec);
1030    if (ret == NO_ERROR) {
1031        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1032    } else {
1033        ALOGE("getCurrentPosition returned %d", ret);
1034    }
1035    return ret;
1036}
1037
1038status_t MediaPlayerService::Client::getDuration(int *msec)
1039{
1040    ALOGV("getDuration");
1041    sp<MediaPlayerBase> p = getPlayer();
1042    if (p == 0) return UNKNOWN_ERROR;
1043    status_t ret = p->getDuration(msec);
1044    if (ret == NO_ERROR) {
1045        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1046    } else {
1047        ALOGE("getDuration returned %d", ret);
1048    }
1049    return ret;
1050}
1051
1052status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1053    ALOGV("setNextPlayer");
1054    Mutex::Autolock l(mLock);
1055    sp<Client> c = static_cast<Client*>(player.get());
1056    mNextClient = c;
1057
1058    if (c != NULL) {
1059        if (mAudioOutput != NULL) {
1060            mAudioOutput->setNextOutput(c->mAudioOutput);
1061        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1062            ALOGE("no current audio output");
1063        }
1064
1065        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1066            mPlayer->setNextPlayer(mNextClient->getPlayer());
1067        }
1068    }
1069
1070    return OK;
1071}
1072
1073status_t MediaPlayerService::Client::seekTo(int msec)
1074{
1075    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1076    sp<MediaPlayerBase> p = getPlayer();
1077    if (p == 0) return UNKNOWN_ERROR;
1078    return p->seekTo(msec);
1079}
1080
1081status_t MediaPlayerService::Client::reset()
1082{
1083    ALOGV("[%d] reset", mConnId);
1084    mRetransmitEndpointValid = false;
1085    sp<MediaPlayerBase> p = getPlayer();
1086    if (p == 0) return UNKNOWN_ERROR;
1087    return p->reset();
1088}
1089
1090status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1091{
1092    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1093    // TODO: for hardware output, call player instead
1094    Mutex::Autolock l(mLock);
1095    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1096    return NO_ERROR;
1097}
1098
1099status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1100{
1101    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1102    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1103    unmarshallAudioAttributes(parcel, mAudioAttributes);
1104
1105    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1106            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1107            mAudioAttributes->tags);
1108
1109    if (mAudioOutput != 0) {
1110        mAudioOutput->setAudioAttributes(mAudioAttributes);
1111    }
1112    return NO_ERROR;
1113}
1114
1115status_t MediaPlayerService::Client::setLooping(int loop)
1116{
1117    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1118    mLoop = loop;
1119    sp<MediaPlayerBase> p = getPlayer();
1120    if (p != 0) return p->setLooping(loop);
1121    return NO_ERROR;
1122}
1123
1124status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1125{
1126    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1127
1128    // for hardware output, call player instead
1129    sp<MediaPlayerBase> p = getPlayer();
1130    {
1131      Mutex::Autolock l(mLock);
1132      if (p != 0 && p->hardwareOutput()) {
1133          MediaPlayerHWInterface* hwp =
1134                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1135          return hwp->setVolume(leftVolume, rightVolume);
1136      } else {
1137          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1138          return NO_ERROR;
1139      }
1140    }
1141
1142    return NO_ERROR;
1143}
1144
1145status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1146{
1147    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1148    Mutex::Autolock l(mLock);
1149    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1150    return NO_ERROR;
1151}
1152
1153status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1154{
1155    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1156    Mutex::Autolock l(mLock);
1157    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1158    return NO_ERROR;
1159}
1160
1161status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1162    ALOGV("[%d] setParameter(%d)", mConnId, key);
1163    switch (key) {
1164    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1165    {
1166        Mutex::Autolock l(mLock);
1167        return setAudioAttributes_l(request);
1168    }
1169    default:
1170        sp<MediaPlayerBase> p = getPlayer();
1171        if (p == 0) { return UNKNOWN_ERROR; }
1172        return p->setParameter(key, request);
1173    }
1174}
1175
1176status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1177    ALOGV("[%d] getParameter(%d)", mConnId, key);
1178    sp<MediaPlayerBase> p = getPlayer();
1179    if (p == 0) return UNKNOWN_ERROR;
1180    return p->getParameter(key, reply);
1181}
1182
1183status_t MediaPlayerService::Client::setRetransmitEndpoint(
1184        const struct sockaddr_in* endpoint) {
1185
1186    if (NULL != endpoint) {
1187        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1188        uint16_t p = ntohs(endpoint->sin_port);
1189        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1190                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1191    } else {
1192        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1193    }
1194
1195    sp<MediaPlayerBase> p = getPlayer();
1196
1197    // Right now, the only valid time to set a retransmit endpoint is before
1198    // player selection has been made (since the presence or absence of a
1199    // retransmit endpoint is going to determine which player is selected during
1200    // setDataSource).
1201    if (p != 0) return INVALID_OPERATION;
1202
1203    if (NULL != endpoint) {
1204        mRetransmitEndpoint = *endpoint;
1205        mRetransmitEndpointValid = true;
1206    } else {
1207        mRetransmitEndpointValid = false;
1208    }
1209
1210    return NO_ERROR;
1211}
1212
1213status_t MediaPlayerService::Client::getRetransmitEndpoint(
1214        struct sockaddr_in* endpoint)
1215{
1216    if (NULL == endpoint)
1217        return BAD_VALUE;
1218
1219    sp<MediaPlayerBase> p = getPlayer();
1220
1221    if (p != NULL)
1222        return p->getRetransmitEndpoint(endpoint);
1223
1224    if (!mRetransmitEndpointValid)
1225        return NO_INIT;
1226
1227    *endpoint = mRetransmitEndpoint;
1228
1229    return NO_ERROR;
1230}
1231
1232void MediaPlayerService::Client::notify(
1233        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1234{
1235    Client* client = static_cast<Client*>(cookie);
1236    if (client == NULL) {
1237        return;
1238    }
1239
1240    sp<IMediaPlayerClient> c;
1241    {
1242        Mutex::Autolock l(client->mLock);
1243        c = client->mClient;
1244        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1245            if (client->mAudioOutput != NULL)
1246                client->mAudioOutput->switchToNextOutput();
1247            client->mNextClient->start();
1248            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1249        }
1250    }
1251
1252    if (MEDIA_INFO == msg &&
1253        MEDIA_INFO_METADATA_UPDATE == ext1) {
1254        const media::Metadata::Type metadata_type = ext2;
1255
1256        if(client->shouldDropMetadata(metadata_type)) {
1257            return;
1258        }
1259
1260        // Update the list of metadata that have changed. getMetadata
1261        // also access mMetadataUpdated and clears it.
1262        client->addNewMetadataUpdate(metadata_type);
1263    }
1264
1265    if (c != NULL) {
1266        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1267        c->notify(msg, ext1, ext2, obj);
1268    }
1269}
1270
1271
1272bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1273{
1274    Mutex::Autolock lock(mLock);
1275
1276    if (findMetadata(mMetadataDrop, code)) {
1277        return true;
1278    }
1279
1280    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1281        return false;
1282    } else {
1283        return true;
1284    }
1285}
1286
1287
1288void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1289    Mutex::Autolock lock(mLock);
1290    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1291        mMetadataUpdated.add(metadata_type);
1292    }
1293}
1294
1295#if CALLBACK_ANTAGONIZER
1296const int Antagonizer::interval = 10000; // 10 msecs
1297
1298Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1299    mExit(false), mActive(false), mClient(client), mCb(cb)
1300{
1301    createThread(callbackThread, this);
1302}
1303
1304void Antagonizer::kill()
1305{
1306    Mutex::Autolock _l(mLock);
1307    mActive = false;
1308    mExit = true;
1309    mCondition.wait(mLock);
1310}
1311
1312int Antagonizer::callbackThread(void* user)
1313{
1314    ALOGD("Antagonizer started");
1315    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1316    while (!p->mExit) {
1317        if (p->mActive) {
1318            ALOGV("send event");
1319            p->mCb(p->mClient, 0, 0, 0);
1320        }
1321        usleep(interval);
1322    }
1323    Mutex::Autolock _l(p->mLock);
1324    p->mCondition.signal();
1325    ALOGD("Antagonizer stopped");
1326    return 0;
1327}
1328#endif
1329
1330#undef LOG_TAG
1331#define LOG_TAG "AudioSink"
1332MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1333        const audio_attributes_t* attr)
1334    : mCallback(NULL),
1335      mCallbackCookie(NULL),
1336      mCallbackData(NULL),
1337      mBytesWritten(0),
1338      mStreamType(AUDIO_STREAM_MUSIC),
1339      mAttributes(attr),
1340      mLeftVolume(1.0),
1341      mRightVolume(1.0),
1342      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1343      mSampleRateHz(0),
1344      mMsecsPerFrame(0),
1345      mFrameSize(0),
1346      mSessionId(sessionId),
1347      mUid(uid),
1348      mPid(pid),
1349      mSendLevel(0.0),
1350      mAuxEffectId(0),
1351      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1352{
1353    ALOGV("AudioOutput(%d)", sessionId);
1354    setMinBufferCount();
1355}
1356
1357MediaPlayerService::AudioOutput::~AudioOutput()
1358{
1359    close();
1360    delete mCallbackData;
1361}
1362
1363//static
1364void MediaPlayerService::AudioOutput::setMinBufferCount()
1365{
1366    char value[PROPERTY_VALUE_MAX];
1367    if (property_get("ro.kernel.qemu", value, 0)) {
1368        mIsOnEmulator = true;
1369        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1370    }
1371}
1372
1373// static
1374bool MediaPlayerService::AudioOutput::isOnEmulator()
1375{
1376    setMinBufferCount(); // benign race wrt other threads
1377    return mIsOnEmulator;
1378}
1379
1380// static
1381int MediaPlayerService::AudioOutput::getMinBufferCount()
1382{
1383    setMinBufferCount(); // benign race wrt other threads
1384    return mMinBufferCount;
1385}
1386
1387ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1388{
1389    Mutex::Autolock lock(mLock);
1390    if (mTrack == 0) return NO_INIT;
1391    return mTrack->frameCount() * mFrameSize;
1392}
1393
1394ssize_t MediaPlayerService::AudioOutput::frameCount() const
1395{
1396    Mutex::Autolock lock(mLock);
1397    if (mTrack == 0) return NO_INIT;
1398    return mTrack->frameCount();
1399}
1400
1401ssize_t MediaPlayerService::AudioOutput::channelCount() const
1402{
1403    Mutex::Autolock lock(mLock);
1404    if (mTrack == 0) return NO_INIT;
1405    return mTrack->channelCount();
1406}
1407
1408ssize_t MediaPlayerService::AudioOutput::frameSize() const
1409{
1410    Mutex::Autolock lock(mLock);
1411    if (mTrack == 0) return NO_INIT;
1412    return mFrameSize;
1413}
1414
1415uint32_t MediaPlayerService::AudioOutput::latency () const
1416{
1417    Mutex::Autolock lock(mLock);
1418    if (mTrack == 0) return 0;
1419    return mTrack->latency();
1420}
1421
1422float MediaPlayerService::AudioOutput::msecsPerFrame() const
1423{
1424    Mutex::Autolock lock(mLock);
1425    return mMsecsPerFrame;
1426}
1427
1428status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1429{
1430    Mutex::Autolock lock(mLock);
1431    if (mTrack == 0) return NO_INIT;
1432    return mTrack->getPosition(position);
1433}
1434
1435status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1436{
1437    Mutex::Autolock lock(mLock);
1438    if (mTrack == 0) return NO_INIT;
1439    return mTrack->getTimestamp(ts);
1440}
1441
1442status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1443{
1444    Mutex::Autolock lock(mLock);
1445    if (mTrack == 0) return NO_INIT;
1446    *frameswritten = mBytesWritten / mFrameSize;
1447    return OK;
1448}
1449
1450status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1451{
1452    Mutex::Autolock lock(mLock);
1453    if (mTrack == 0) return NO_INIT;
1454    return mTrack->setParameters(keyValuePairs);
1455}
1456
1457String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1458{
1459    Mutex::Autolock lock(mLock);
1460    if (mTrack == 0) return String8::empty();
1461    return mTrack->getParameters(keys);
1462}
1463
1464void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1465    Mutex::Autolock lock(mLock);
1466    mAttributes = attributes;
1467}
1468
1469void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1470{
1471    ALOGV("deleteRecycledTrack_l");
1472    if (mRecycledTrack != 0) {
1473
1474        if (mCallbackData != NULL) {
1475            mCallbackData->setOutput(NULL);
1476            mCallbackData->endTrackSwitch();
1477        }
1478
1479        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1480            mRecycledTrack->flush();
1481        }
1482        // An offloaded track isn't flushed because the STREAM_END is reported
1483        // slightly prematurely to allow time for the gapless track switch
1484        // but this means that if we decide not to recycle the track there
1485        // could be a small amount of residual data still playing. We leave
1486        // AudioFlinger to drain the track.
1487
1488        mRecycledTrack.clear();
1489        close_l();
1490        delete mCallbackData;
1491        mCallbackData = NULL;
1492    }
1493}
1494
1495void MediaPlayerService::AudioOutput::close_l()
1496{
1497    mTrack.clear();
1498}
1499
1500status_t MediaPlayerService::AudioOutput::open(
1501        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1502        audio_format_t format, int bufferCount,
1503        AudioCallback cb, void *cookie,
1504        audio_output_flags_t flags,
1505        const audio_offload_info_t *offloadInfo,
1506        bool doNotReconnect,
1507        uint32_t suggestedFrameCount)
1508{
1509    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1510                format, bufferCount, mSessionId, flags);
1511
1512    // offloading is only supported in callback mode for now.
1513    // offloadInfo must be present if offload flag is set
1514    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1515            ((cb == NULL) || (offloadInfo == NULL))) {
1516        return BAD_VALUE;
1517    }
1518
1519    // compute frame count for the AudioTrack internal buffer
1520    size_t frameCount;
1521    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1522        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1523    } else {
1524        // try to estimate the buffer processing fetch size from AudioFlinger.
1525        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1526        uint32_t afSampleRate;
1527        size_t afFrameCount;
1528        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1529            return NO_INIT;
1530        }
1531        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1532            return NO_INIT;
1533        }
1534        const size_t framesPerBuffer =
1535                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1536
1537        if (bufferCount == 0) {
1538            // use suggestedFrameCount
1539            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1540        }
1541        // Check argument bufferCount against the mininum buffer count
1542        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1543            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1544            bufferCount = mMinBufferCount;
1545        }
1546        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1547        // which will be the minimum size permitted.
1548        frameCount = bufferCount * framesPerBuffer;
1549    }
1550
1551    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1552        channelMask = audio_channel_out_mask_from_count(channelCount);
1553        if (0 == channelMask) {
1554            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1555            return NO_INIT;
1556        }
1557    }
1558
1559    Mutex::Autolock lock(mLock);
1560    mCallback = cb;
1561    mCallbackCookie = cookie;
1562
1563    // Check whether we can recycle the track
1564    bool reuse = false;
1565    bool bothOffloaded = false;
1566
1567    if (mRecycledTrack != 0) {
1568        // check whether we are switching between two offloaded tracks
1569        bothOffloaded = (flags & mRecycledTrack->getFlags()
1570                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1571
1572        // check if the existing track can be reused as-is, or if a new track needs to be created.
1573        reuse = true;
1574
1575        if ((mCallbackData == NULL && mCallback != NULL) ||
1576                (mCallbackData != NULL && mCallback == NULL)) {
1577            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1578            ALOGV("can't chain callback and write");
1579            reuse = false;
1580        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1581                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1582            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1583                  mRecycledTrack->getSampleRate(), sampleRate,
1584                  mRecycledTrack->channelCount(), channelCount);
1585            reuse = false;
1586        } else if (flags != mFlags) {
1587            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1588            reuse = false;
1589        } else if (mRecycledTrack->format() != format) {
1590            reuse = false;
1591        }
1592    } else {
1593        ALOGV("no track available to recycle");
1594    }
1595
1596    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1597
1598    // If we can't recycle and both tracks are offloaded
1599    // we must close the previous output before opening a new one
1600    if (bothOffloaded && !reuse) {
1601        ALOGV("both offloaded and not recycling");
1602        deleteRecycledTrack_l();
1603    }
1604
1605    sp<AudioTrack> t;
1606    CallbackData *newcbd = NULL;
1607
1608    // We don't attempt to create a new track if we are recycling an
1609    // offloaded track. But, if we are recycling a non-offloaded or we
1610    // are switching where one is offloaded and one isn't then we create
1611    // the new track in advance so that we can read additional stream info
1612
1613    if (!(reuse && bothOffloaded)) {
1614        ALOGV("creating new AudioTrack");
1615
1616        if (mCallback != NULL) {
1617            newcbd = new CallbackData(this);
1618            t = new AudioTrack(
1619                    mStreamType,
1620                    sampleRate,
1621                    format,
1622                    channelMask,
1623                    frameCount,
1624                    flags,
1625                    CallbackWrapper,
1626                    newcbd,
1627                    0,  // notification frames
1628                    mSessionId,
1629                    AudioTrack::TRANSFER_CALLBACK,
1630                    offloadInfo,
1631                    mUid,
1632                    mPid,
1633                    mAttributes,
1634                    doNotReconnect);
1635        } else {
1636            t = new AudioTrack(
1637                    mStreamType,
1638                    sampleRate,
1639                    format,
1640                    channelMask,
1641                    frameCount,
1642                    flags,
1643                    NULL, // callback
1644                    NULL, // user data
1645                    0, // notification frames
1646                    mSessionId,
1647                    AudioTrack::TRANSFER_DEFAULT,
1648                    NULL, // offload info
1649                    mUid,
1650                    mPid,
1651                    mAttributes,
1652                    doNotReconnect);
1653        }
1654
1655        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1656            ALOGE("Unable to create audio track");
1657            delete newcbd;
1658            // t goes out of scope, so reference count drops to zero
1659            return NO_INIT;
1660        } else {
1661            // successful AudioTrack initialization implies a legacy stream type was generated
1662            // from the audio attributes
1663            mStreamType = t->streamType();
1664        }
1665    }
1666
1667    if (reuse) {
1668        CHECK(mRecycledTrack != NULL);
1669
1670        if (!bothOffloaded) {
1671            if (mRecycledTrack->frameCount() != t->frameCount()) {
1672                ALOGV("framecount differs: %u/%u frames",
1673                      mRecycledTrack->frameCount(), t->frameCount());
1674                reuse = false;
1675            }
1676        }
1677
1678        if (reuse) {
1679            ALOGV("chaining to next output and recycling track");
1680            close_l();
1681            mTrack = mRecycledTrack;
1682            mRecycledTrack.clear();
1683            if (mCallbackData != NULL) {
1684                mCallbackData->setOutput(this);
1685            }
1686            delete newcbd;
1687            return OK;
1688        }
1689    }
1690
1691    // we're not going to reuse the track, unblock and flush it
1692    // this was done earlier if both tracks are offloaded
1693    if (!bothOffloaded) {
1694        deleteRecycledTrack_l();
1695    }
1696
1697    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1698
1699    mCallbackData = newcbd;
1700    ALOGV("setVolume");
1701    t->setVolume(mLeftVolume, mRightVolume);
1702
1703    mSampleRateHz = sampleRate;
1704    mFlags = t->getFlags(); // we suggest the flags above, but new AudioTrack() may not grant it.
1705    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1706    mFrameSize = t->frameSize();
1707    uint32_t pos;
1708    if (t->getPosition(&pos) == OK) {
1709        mBytesWritten = uint64_t(pos) * mFrameSize;
1710    }
1711    mTrack = t;
1712
1713    status_t res = NO_ERROR;
1714    // Note some output devices may give us a direct track even though we don't specify it.
1715    // Example: Line application b/17459982.
1716    if ((mFlags & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1717        res = t->setPlaybackRate(mPlaybackRate);
1718        if (res == NO_ERROR) {
1719            t->setAuxEffectSendLevel(mSendLevel);
1720            res = t->attachAuxEffect(mAuxEffectId);
1721        }
1722    }
1723    ALOGV("open() DONE status %d", res);
1724    return res;
1725}
1726
1727status_t MediaPlayerService::AudioOutput::start()
1728{
1729    ALOGV("start");
1730    Mutex::Autolock lock(mLock);
1731    if (mCallbackData != NULL) {
1732        mCallbackData->endTrackSwitch();
1733    }
1734    if (mTrack != 0) {
1735        mTrack->setVolume(mLeftVolume, mRightVolume);
1736        mTrack->setAuxEffectSendLevel(mSendLevel);
1737        return mTrack->start();
1738    }
1739    return NO_INIT;
1740}
1741
1742void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1743    Mutex::Autolock lock(mLock);
1744    mNextOutput = nextOutput;
1745}
1746
1747void MediaPlayerService::AudioOutput::switchToNextOutput() {
1748    ALOGV("switchToNextOutput");
1749
1750    // Try to acquire the callback lock before moving track (without incurring deadlock).
1751    const unsigned kMaxSwitchTries = 100;
1752    Mutex::Autolock lock(mLock);
1753    for (unsigned tries = 0;;) {
1754        if (mTrack == 0) {
1755            return;
1756        }
1757        if (mNextOutput != NULL && mNextOutput != this) {
1758            if (mCallbackData != NULL) {
1759                // two alternative approaches
1760#if 1
1761                CallbackData *callbackData = mCallbackData;
1762                mLock.unlock();
1763                // proper acquisition sequence
1764                callbackData->lock();
1765                mLock.lock();
1766                // Caution: it is unlikely that someone deleted our callback or changed our target
1767                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1768                    // fatal if we are starved out.
1769                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1770                            "switchToNextOutput() cannot obtain correct lock sequence");
1771                    callbackData->unlock();
1772                    continue;
1773                }
1774                callbackData->mSwitching = true; // begin track switch
1775#else
1776                // tryBeginTrackSwitch() returns false if the callback has the lock.
1777                if (!mCallbackData->tryBeginTrackSwitch()) {
1778                    // fatal if we are starved out.
1779                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1780                            "switchToNextOutput() cannot obtain callback lock");
1781                    mLock.unlock();
1782                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1783                    mLock.lock();
1784                    continue;
1785                }
1786#endif
1787            }
1788
1789            Mutex::Autolock nextLock(mNextOutput->mLock);
1790
1791            // If the next output track is not NULL, then it has been
1792            // opened already for playback.
1793            // This is possible even without the next player being started,
1794            // for example, the next player could be prepared and seeked.
1795            //
1796            // Presuming it isn't advisable to force the track over.
1797             if (mNextOutput->mTrack == NULL) {
1798                ALOGD("Recycling track for gapless playback");
1799                delete mNextOutput->mCallbackData;
1800                mNextOutput->mCallbackData = mCallbackData;
1801                mNextOutput->mRecycledTrack = mTrack;
1802                mNextOutput->mSampleRateHz = mSampleRateHz;
1803                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1804                mNextOutput->mBytesWritten = mBytesWritten;
1805                mNextOutput->mFlags = mFlags;
1806                mNextOutput->mFrameSize = mFrameSize;
1807                close_l();
1808                mCallbackData = NULL;  // destruction handled by mNextOutput
1809            } else {
1810                ALOGW("Ignoring gapless playback because next player has already started");
1811                // remove track in case resource needed for future players.
1812                if (mCallbackData != NULL) {
1813                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
1814                }
1815                close_l();
1816            }
1817        }
1818        break;
1819    }
1820}
1821
1822ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1823{
1824    Mutex::Autolock lock(mLock);
1825    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1826
1827    //ALOGV("write(%p, %u)", buffer, size);
1828    if (mTrack != 0) {
1829        ssize_t ret = mTrack->write(buffer, size, blocking);
1830        if (ret >= 0) {
1831            mBytesWritten += ret;
1832        }
1833        return ret;
1834    }
1835    return NO_INIT;
1836}
1837
1838void MediaPlayerService::AudioOutput::stop()
1839{
1840    ALOGV("stop");
1841    Mutex::Autolock lock(mLock);
1842    mBytesWritten = 0;
1843    if (mTrack != 0) mTrack->stop();
1844}
1845
1846void MediaPlayerService::AudioOutput::flush()
1847{
1848    ALOGV("flush");
1849    Mutex::Autolock lock(mLock);
1850    mBytesWritten = 0;
1851    if (mTrack != 0) mTrack->flush();
1852}
1853
1854void MediaPlayerService::AudioOutput::pause()
1855{
1856    ALOGV("pause");
1857    Mutex::Autolock lock(mLock);
1858    if (mTrack != 0) mTrack->pause();
1859}
1860
1861void MediaPlayerService::AudioOutput::close()
1862{
1863    ALOGV("close");
1864    Mutex::Autolock lock(mLock);
1865    close_l();
1866}
1867
1868void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1869{
1870    ALOGV("setVolume(%f, %f)", left, right);
1871    Mutex::Autolock lock(mLock);
1872    mLeftVolume = left;
1873    mRightVolume = right;
1874    if (mTrack != 0) {
1875        mTrack->setVolume(left, right);
1876    }
1877}
1878
1879status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
1880{
1881    ALOGV("setPlaybackRate(%f %f %d %d)",
1882                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1883    Mutex::Autolock lock(mLock);
1884    if (mTrack == 0) {
1885        // remember rate so that we can set it when the track is opened
1886        mPlaybackRate = rate;
1887        return OK;
1888    }
1889    status_t res = mTrack->setPlaybackRate(rate);
1890    if (res != NO_ERROR) {
1891        return res;
1892    }
1893    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
1894    CHECK_GT(rate.mSpeed, 0.f);
1895    mPlaybackRate = rate;
1896    if (mSampleRateHz != 0) {
1897        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
1898    }
1899    return res;
1900}
1901
1902status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
1903{
1904    ALOGV("setPlaybackRate");
1905    Mutex::Autolock lock(mLock);
1906    if (mTrack == 0) {
1907        return NO_INIT;
1908    }
1909    *rate = mTrack->getPlaybackRate();
1910    return NO_ERROR;
1911}
1912
1913status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1914{
1915    ALOGV("setAuxEffectSendLevel(%f)", level);
1916    Mutex::Autolock lock(mLock);
1917    mSendLevel = level;
1918    if (mTrack != 0) {
1919        return mTrack->setAuxEffectSendLevel(level);
1920    }
1921    return NO_ERROR;
1922}
1923
1924status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1925{
1926    ALOGV("attachAuxEffect(%d)", effectId);
1927    Mutex::Autolock lock(mLock);
1928    mAuxEffectId = effectId;
1929    if (mTrack != 0) {
1930        return mTrack->attachAuxEffect(effectId);
1931    }
1932    return NO_ERROR;
1933}
1934
1935// static
1936void MediaPlayerService::AudioOutput::CallbackWrapper(
1937        int event, void *cookie, void *info) {
1938    //ALOGV("callbackwrapper");
1939    CallbackData *data = (CallbackData*)cookie;
1940    // lock to ensure we aren't caught in the middle of a track switch.
1941    data->lock();
1942    AudioOutput *me = data->getOutput();
1943    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1944    if (me == NULL) {
1945        // no output set, likely because the track was scheduled to be reused
1946        // by another player, but the format turned out to be incompatible.
1947        data->unlock();
1948        if (buffer != NULL) {
1949            buffer->size = 0;
1950        }
1951        return;
1952    }
1953
1954    switch(event) {
1955    case AudioTrack::EVENT_MORE_DATA: {
1956        size_t actualSize = (*me->mCallback)(
1957                me, buffer->raw, buffer->size, me->mCallbackCookie,
1958                CB_EVENT_FILL_BUFFER);
1959
1960        // Log when no data is returned from the callback.
1961        // (1) We may have no data (especially with network streaming sources).
1962        // (2) We may have reached the EOS and the audio track is not stopped yet.
1963        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
1964        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
1965        //
1966        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
1967        // nevertheless for power reasons, we don't want to see too many of these.
1968
1969        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
1970
1971        me->mBytesWritten += actualSize;  // benign race with reader.
1972        buffer->size = actualSize;
1973        } break;
1974
1975    case AudioTrack::EVENT_STREAM_END:
1976        // currently only occurs for offloaded callbacks
1977        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1978        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1979                me->mCallbackCookie, CB_EVENT_STREAM_END);
1980        break;
1981
1982    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1983        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1984        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1985                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1986        break;
1987
1988    case AudioTrack::EVENT_UNDERRUN:
1989        // This occurs when there is no data available, typically
1990        // when there is a failure to supply data to the AudioTrack.  It can also
1991        // occur in non-offloaded mode when the audio device comes out of standby.
1992        //
1993        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
1994        // it may sound like an audible pop or glitch.
1995        //
1996        // The underrun event is sent once per track underrun; the condition is reset
1997        // when more data is sent to the AudioTrack.
1998        ALOGI("callbackwrapper: EVENT_UNDERRUN (discarded)");
1999        break;
2000
2001    default:
2002        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2003    }
2004
2005    data->unlock();
2006}
2007
2008int MediaPlayerService::AudioOutput::getSessionId() const
2009{
2010    Mutex::Autolock lock(mLock);
2011    return mSessionId;
2012}
2013
2014uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2015{
2016    Mutex::Autolock lock(mLock);
2017    if (mTrack == 0) return 0;
2018    return mTrack->getSampleRate();
2019}
2020
2021////////////////////////////////////////////////////////////////////////////////
2022
2023struct CallbackThread : public Thread {
2024    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2025                   MediaPlayerBase::AudioSink::AudioCallback cb,
2026                   void *cookie);
2027
2028protected:
2029    virtual ~CallbackThread();
2030
2031    virtual bool threadLoop();
2032
2033private:
2034    wp<MediaPlayerBase::AudioSink> mSink;
2035    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2036    void *mCookie;
2037    void *mBuffer;
2038    size_t mBufferSize;
2039
2040    CallbackThread(const CallbackThread &);
2041    CallbackThread &operator=(const CallbackThread &);
2042};
2043
2044CallbackThread::CallbackThread(
2045        const wp<MediaPlayerBase::AudioSink> &sink,
2046        MediaPlayerBase::AudioSink::AudioCallback cb,
2047        void *cookie)
2048    : mSink(sink),
2049      mCallback(cb),
2050      mCookie(cookie),
2051      mBuffer(NULL),
2052      mBufferSize(0) {
2053}
2054
2055CallbackThread::~CallbackThread() {
2056    if (mBuffer) {
2057        free(mBuffer);
2058        mBuffer = NULL;
2059    }
2060}
2061
2062bool CallbackThread::threadLoop() {
2063    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2064    if (sink == NULL) {
2065        return false;
2066    }
2067
2068    if (mBuffer == NULL) {
2069        mBufferSize = sink->bufferSize();
2070        mBuffer = malloc(mBufferSize);
2071    }
2072
2073    size_t actualSize =
2074        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2075                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2076
2077    if (actualSize > 0) {
2078        sink->write(mBuffer, actualSize);
2079        // Could return false on sink->write() error or short count.
2080        // Not necessarily appropriate but would work for AudioCache behavior.
2081    }
2082
2083    return true;
2084}
2085
2086////////////////////////////////////////////////////////////////////////////////
2087
2088void MediaPlayerService::addBatteryData(uint32_t params)
2089{
2090    Mutex::Autolock lock(mLock);
2091
2092    int32_t time = systemTime() / 1000000L;
2093
2094    // change audio output devices. This notification comes from AudioFlinger
2095    if ((params & kBatteryDataSpeakerOn)
2096            || (params & kBatteryDataOtherAudioDeviceOn)) {
2097
2098        int deviceOn[NUM_AUDIO_DEVICES];
2099        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2100            deviceOn[i] = 0;
2101        }
2102
2103        if ((params & kBatteryDataSpeakerOn)
2104                && (params & kBatteryDataOtherAudioDeviceOn)) {
2105            deviceOn[SPEAKER_AND_OTHER] = 1;
2106        } else if (params & kBatteryDataSpeakerOn) {
2107            deviceOn[SPEAKER] = 1;
2108        } else {
2109            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2110        }
2111
2112        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2113            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2114
2115                if (mBatteryAudio.refCount > 0) { // if playing audio
2116                    if (!deviceOn[i]) {
2117                        mBatteryAudio.lastTime[i] += time;
2118                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2119                        mBatteryAudio.lastTime[i] = 0;
2120                    } else {
2121                        mBatteryAudio.lastTime[i] = 0 - time;
2122                    }
2123                }
2124
2125                mBatteryAudio.deviceOn[i] = deviceOn[i];
2126            }
2127        }
2128        return;
2129    }
2130
2131    // an audio stream is started
2132    if (params & kBatteryDataAudioFlingerStart) {
2133        // record the start time only if currently no other audio
2134        // is being played
2135        if (mBatteryAudio.refCount == 0) {
2136            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2137                if (mBatteryAudio.deviceOn[i]) {
2138                    mBatteryAudio.lastTime[i] -= time;
2139                }
2140            }
2141        }
2142
2143        mBatteryAudio.refCount ++;
2144        return;
2145
2146    } else if (params & kBatteryDataAudioFlingerStop) {
2147        if (mBatteryAudio.refCount <= 0) {
2148            ALOGW("Battery track warning: refCount is <= 0");
2149            return;
2150        }
2151
2152        // record the stop time only if currently this is the only
2153        // audio being played
2154        if (mBatteryAudio.refCount == 1) {
2155            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2156                if (mBatteryAudio.deviceOn[i]) {
2157                    mBatteryAudio.lastTime[i] += time;
2158                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2159                    mBatteryAudio.lastTime[i] = 0;
2160                }
2161            }
2162        }
2163
2164        mBatteryAudio.refCount --;
2165        return;
2166    }
2167
2168    int uid = IPCThreadState::self()->getCallingUid();
2169    if (uid == AID_MEDIA) {
2170        return;
2171    }
2172    int index = mBatteryData.indexOfKey(uid);
2173
2174    if (index < 0) { // create a new entry for this UID
2175        BatteryUsageInfo info;
2176        info.audioTotalTime = 0;
2177        info.videoTotalTime = 0;
2178        info.audioLastTime = 0;
2179        info.videoLastTime = 0;
2180        info.refCount = 0;
2181
2182        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2183            ALOGE("Battery track error: no memory for new app");
2184            return;
2185        }
2186    }
2187
2188    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2189
2190    if (params & kBatteryDataCodecStarted) {
2191        if (params & kBatteryDataTrackAudio) {
2192            info.audioLastTime -= time;
2193            info.refCount ++;
2194        }
2195        if (params & kBatteryDataTrackVideo) {
2196            info.videoLastTime -= time;
2197            info.refCount ++;
2198        }
2199    } else {
2200        if (info.refCount == 0) {
2201            ALOGW("Battery track warning: refCount is already 0");
2202            return;
2203        } else if (info.refCount < 0) {
2204            ALOGE("Battery track error: refCount < 0");
2205            mBatteryData.removeItem(uid);
2206            return;
2207        }
2208
2209        if (params & kBatteryDataTrackAudio) {
2210            info.audioLastTime += time;
2211            info.refCount --;
2212        }
2213        if (params & kBatteryDataTrackVideo) {
2214            info.videoLastTime += time;
2215            info.refCount --;
2216        }
2217
2218        // no stream is being played by this UID
2219        if (info.refCount == 0) {
2220            info.audioTotalTime += info.audioLastTime;
2221            info.audioLastTime = 0;
2222            info.videoTotalTime += info.videoLastTime;
2223            info.videoLastTime = 0;
2224        }
2225    }
2226}
2227
2228status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2229    Mutex::Autolock lock(mLock);
2230
2231    // audio output devices usage
2232    int32_t time = systemTime() / 1000000L; //in ms
2233    int32_t totalTime;
2234
2235    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2236        totalTime = mBatteryAudio.totalTime[i];
2237
2238        if (mBatteryAudio.deviceOn[i]
2239            && (mBatteryAudio.lastTime[i] != 0)) {
2240                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2241                totalTime += tmpTime;
2242        }
2243
2244        reply->writeInt32(totalTime);
2245        // reset the total time
2246        mBatteryAudio.totalTime[i] = 0;
2247   }
2248
2249    // codec usage
2250    BatteryUsageInfo info;
2251    int size = mBatteryData.size();
2252
2253    reply->writeInt32(size);
2254    int i = 0;
2255
2256    while (i < size) {
2257        info = mBatteryData.valueAt(i);
2258
2259        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2260        reply->writeInt32(info.audioTotalTime);
2261        reply->writeInt32(info.videoTotalTime);
2262
2263        info.audioTotalTime = 0;
2264        info.videoTotalTime = 0;
2265
2266        // remove the UID entry where no stream is being played
2267        if (info.refCount <= 0) {
2268            mBatteryData.removeItemsAt(i);
2269            size --;
2270            i --;
2271        }
2272        i++;
2273    }
2274    return NO_ERROR;
2275}
2276} // namespace android
2277