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 <media/stagefright/SurfaceUtils.h>
64#include <mediautils/BatteryNotifier.h>
65
66#include <memunreachable/memunreachable.h>
67#include <system/audio.h>
68
69#include <private/android_filesystem_config.h>
70
71#include "ActivityManager.h"
72#include "MediaRecorderClient.h"
73#include "MediaPlayerService.h"
74#include "MetadataRetrieverClient.h"
75#include "MediaPlayerFactory.h"
76
77#include "TestPlayerStub.h"
78#include "nuplayer/NuPlayerDriver.h"
79
80#include <OMX.h>
81
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
97const float kMaxRequiredSpeed = 8.0f; // for PCM tracks allow up to 8x speedup.
98
99// FIXME: Move all the metadata related function in the Metadata.cpp
100
101
102// Unmarshall a filter from a Parcel.
103// Filter format in a parcel:
104//
105//  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
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107// |                       number of entries (n)                   |
108// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
109// |                       metadata type 1                         |
110// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111// |                       metadata type 2                         |
112// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113//  ....
114// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
115// |                       metadata type n                         |
116// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
117//
118// @param p Parcel that should start with a filter.
119// @param[out] filter On exit contains the list of metadata type to be
120//                    filtered.
121// @param[out] status On exit contains the status code to be returned.
122// @return true if the parcel starts with a valid filter.
123bool unmarshallFilter(const Parcel& p,
124                      Metadata::Filter *filter,
125                      status_t *status)
126{
127    int32_t val;
128    if (p.readInt32(&val) != OK)
129    {
130        ALOGE("Failed to read filter's length");
131        *status = NOT_ENOUGH_DATA;
132        return false;
133    }
134
135    if( val > kMaxFilterSize || val < 0)
136    {
137        ALOGE("Invalid filter len %d", val);
138        *status = BAD_VALUE;
139        return false;
140    }
141
142    const size_t num = val;
143
144    filter->clear();
145    filter->setCapacity(num);
146
147    size_t size = num * sizeof(Metadata::Type);
148
149
150    if (p.dataAvail() < size)
151    {
152        ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail());
153        *status = NOT_ENOUGH_DATA;
154        return false;
155    }
156
157    const Metadata::Type *data =
158            static_cast<const Metadata::Type*>(p.readInplace(size));
159
160    if (NULL == data)
161    {
162        ALOGE("Filter had no data");
163        *status = BAD_VALUE;
164        return false;
165    }
166
167    // TODO: The stl impl of vector would be more efficient here
168    // because it degenerates into a memcpy on pod types. Try to
169    // replace later or use stl::set.
170    for (size_t i = 0; i < num; ++i)
171    {
172        filter->add(*data);
173        ++data;
174    }
175    *status = OK;
176    return true;
177}
178
179// @param filter Of metadata type.
180// @param val To be searched.
181// @return true if a match was found.
182bool findMetadata(const Metadata::Filter& filter, const int32_t val)
183{
184    // Deal with empty and ANY right away
185    if (filter.isEmpty()) return false;
186    if (filter[0] == Metadata::kAny) return true;
187
188    return filter.indexOf(val) >= 0;
189}
190
191}  // anonymous namespace
192
193
194namespace {
195using android::Parcel;
196using android::String16;
197
198// marshalling tag indicating flattened utf16 tags
199// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
200const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
201
202// Audio attributes format in a parcel:
203//
204//  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
205// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
206// |                       usage                                   |
207// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
208// |                       content_type                            |
209// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
210// |                       source                                  |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212// |                       flags                                   |
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
215// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
216// |                       flattened tags in UTF16                 |
217// |                         ...                                   |
218// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
219//
220// @param p Parcel that contains audio attributes.
221// @param[out] attributes On exit points to an initialized audio_attributes_t structure
222// @param[out] status On exit contains the status code to be returned.
223void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
224{
225    attributes->usage = (audio_usage_t) parcel.readInt32();
226    attributes->content_type = (audio_content_type_t) parcel.readInt32();
227    attributes->source = (audio_source_t) parcel.readInt32();
228    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
229    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
230    if (hasFlattenedTag) {
231        // the tags are UTF16, convert to UTF8
232        String16 tags = parcel.readString16();
233        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
234        if (realTagSize <= 0) {
235            strcpy(attributes->tags, "");
236        } else {
237            // copy the flattened string into the attributes as the destination for the conversion:
238            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
239            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
240                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
241            utf16_to_utf8(tags.string(), tagSize, attributes->tags,
242                    sizeof(attributes->tags) / sizeof(attributes->tags[0]));
243        }
244    } else {
245        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
246        strcpy(attributes->tags, "");
247    }
248}
249} // anonymous namespace
250
251
252namespace android {
253
254extern ALooperRoster gLooperRoster;
255
256
257static bool checkPermission(const char* permissionString) {
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    MediaPlayerFactory::registerBuiltinFactories();
279}
280
281MediaPlayerService::~MediaPlayerService()
282{
283    ALOGV("MediaPlayerService destroyed");
284}
285
286sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
287{
288    pid_t pid = IPCThreadState::self()->getCallingPid();
289    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
290    wp<MediaRecorderClient> w = recorder;
291    Mutex::Autolock lock(mLock);
292    mMediaRecorderClients.add(w);
293    ALOGV("Create new media recorder client from pid %d", pid);
294    return recorder;
295}
296
297void MediaPlayerService::removeMediaRecorderClient(const wp<MediaRecorderClient>& client)
298{
299    Mutex::Autolock lock(mLock);
300    mMediaRecorderClients.remove(client);
301    ALOGV("Delete media recorder client");
302}
303
304sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
305{
306    pid_t pid = IPCThreadState::self()->getCallingPid();
307    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
308    ALOGV("Create new media retriever from pid %d", pid);
309    return retriever;
310}
311
312sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
313        audio_session_t audioSessionId)
314{
315    pid_t pid = IPCThreadState::self()->getCallingPid();
316    int32_t connId = android_atomic_inc(&mNextConnId);
317
318    sp<Client> c = new Client(
319            this, pid, connId, client, audioSessionId,
320            IPCThreadState::self()->getCallingUid());
321
322    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
323         IPCThreadState::self()->getCallingUid());
324
325    wp<Client> w = c;
326    {
327        Mutex::Autolock lock(mLock);
328        mClients.add(w);
329    }
330    return c;
331}
332
333sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
334    return MediaCodecList::getLocalInstance();
335}
336
337sp<IOMX> MediaPlayerService::getOMX() {
338    ALOGI("MediaPlayerService::getOMX");
339    Mutex::Autolock autoLock(mLock);
340
341    if (mOMX.get() == NULL) {
342        mOMX = new OMX;
343    }
344
345    return mOMX;
346}
347
348sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
349    return new HDCP(createEncryptionModule);
350}
351
352sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
353        const String16 &opPackageName,
354        const sp<IRemoteDisplayClient>& client, const String8& iface) {
355    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
356        return NULL;
357    }
358
359    return new RemoteDisplay(opPackageName, client, iface.string());
360}
361
362status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
363{
364    const size_t SIZE = 256;
365    char buffer[SIZE];
366    String8 result;
367
368    result.append(" AudioOutput\n");
369    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
370            mStreamType, mLeftVolume, mRightVolume);
371    result.append(buffer);
372    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
373            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
374    result.append(buffer);
375    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
376            mAuxEffectId, mSendLevel);
377    result.append(buffer);
378
379    ::write(fd, result.string(), result.size());
380    if (mTrack != 0) {
381        mTrack->dump(fd, args);
382    }
383    return NO_ERROR;
384}
385
386status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
387{
388    const size_t SIZE = 256;
389    char buffer[SIZE];
390    String8 result;
391    result.append(" Client\n");
392    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
393            mPid, mConnId, mStatus, mLoop?"true": "false");
394    result.append(buffer);
395    write(fd, result.string(), result.size());
396    if (mPlayer != NULL) {
397        mPlayer->dump(fd, args);
398    }
399    if (mAudioOutput != 0) {
400        mAudioOutput->dump(fd, args);
401    }
402    write(fd, "\n", 1);
403    return NO_ERROR;
404}
405
406/**
407 * The only arguments this understands right now are -c, -von and -voff,
408 * which are parsed by ALooperRoster::dump()
409 */
410status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
411{
412    const size_t SIZE = 256;
413    char buffer[SIZE];
414    String8 result;
415    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
416    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
417
418    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
419        snprintf(buffer, SIZE, "Permission Denial: "
420                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
421                IPCThreadState::self()->getCallingPid(),
422                IPCThreadState::self()->getCallingUid());
423        result.append(buffer);
424    } else {
425        Mutex::Autolock lock(mLock);
426        for (int i = 0, n = mClients.size(); i < n; ++i) {
427            sp<Client> c = mClients[i].promote();
428            if (c != 0) c->dump(fd, args);
429            clients.add(c);
430        }
431        if (mMediaRecorderClients.size() == 0) {
432                result.append(" No media recorder client\n\n");
433        } else {
434            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
435                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
436                if (c != 0) {
437                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
438                    result.append(buffer);
439                    write(fd, result.string(), result.size());
440                    result = "\n";
441                    c->dump(fd, args);
442                    mediaRecorderClients.add(c);
443                }
444            }
445        }
446
447        result.append(" Files opened and/or mapped:\n");
448        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
449        FILE *f = fopen(buffer, "r");
450        if (f) {
451            while (!feof(f)) {
452                fgets(buffer, SIZE, f);
453                if (strstr(buffer, " /storage/") ||
454                    strstr(buffer, " /system/sounds/") ||
455                    strstr(buffer, " /data/") ||
456                    strstr(buffer, " /system/media/")) {
457                    result.append("  ");
458                    result.append(buffer);
459                }
460            }
461            fclose(f);
462        } else {
463            result.append("couldn't open ");
464            result.append(buffer);
465            result.append("\n");
466        }
467
468        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
469        DIR *d = opendir(buffer);
470        if (d) {
471            struct dirent *ent;
472            while((ent = readdir(d)) != NULL) {
473                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
474                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
475                    struct stat s;
476                    if (lstat(buffer, &s) == 0) {
477                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
478                            char linkto[256];
479                            int len = readlink(buffer, linkto, sizeof(linkto));
480                            if(len > 0) {
481                                if(len > 255) {
482                                    linkto[252] = '.';
483                                    linkto[253] = '.';
484                                    linkto[254] = '.';
485                                    linkto[255] = 0;
486                                } else {
487                                    linkto[len] = 0;
488                                }
489                                if (strstr(linkto, "/storage/") == linkto ||
490                                    strstr(linkto, "/system/sounds/") == linkto ||
491                                    strstr(linkto, "/data/") == linkto ||
492                                    strstr(linkto, "/system/media/") == linkto) {
493                                    result.append("  ");
494                                    result.append(buffer);
495                                    result.append(" -> ");
496                                    result.append(linkto);
497                                    result.append("\n");
498                                }
499                            }
500                        } else {
501                            result.append("  unexpected type for ");
502                            result.append(buffer);
503                            result.append("\n");
504                        }
505                    }
506                }
507            }
508            closedir(d);
509        } else {
510            result.append("couldn't open ");
511            result.append(buffer);
512            result.append("\n");
513        }
514
515        gLooperRoster.dump(fd, args);
516
517        bool dumpMem = false;
518        bool unreachableMemory = false;
519        for (size_t i = 0; i < args.size(); i++) {
520            if (args[i] == String16("-m")) {
521                dumpMem = true;
522            } else if (args[i] == String16("--unreachable")) {
523                unreachableMemory = true;
524            }
525        }
526        if (dumpMem) {
527            result.append("\nDumping memory:\n");
528            std::string s = dumpMemoryAddresses(100 /* limit */);
529            result.append(s.c_str(), s.size());
530        }
531        if (unreachableMemory) {
532            result.append("\nDumping unreachable memory:\n");
533            // TODO - should limit be an argument parameter?
534            std::string s = GetUnreachableMemoryString(true /* contents */, 10000 /* limit */);
535            result.append(s.c_str(), s.size());
536        }
537    }
538    write(fd, result.string(), result.size());
539    return NO_ERROR;
540}
541
542void MediaPlayerService::removeClient(const wp<Client>& client)
543{
544    Mutex::Autolock lock(mLock);
545    mClients.remove(client);
546}
547
548bool MediaPlayerService::hasClient(wp<Client> client)
549{
550    Mutex::Autolock lock(mLock);
551    return mClients.indexOf(client) != NAME_NOT_FOUND;
552}
553
554MediaPlayerService::Client::Client(
555        const sp<MediaPlayerService>& service, pid_t pid,
556        int32_t connId, const sp<IMediaPlayerClient>& client,
557        audio_session_t audioSessionId, uid_t uid)
558{
559    ALOGV("Client(%d) constructor", connId);
560    mPid = pid;
561    mConnId = connId;
562    mService = service;
563    mClient = client;
564    mLoop = false;
565    mStatus = NO_INIT;
566    mAudioSessionId = audioSessionId;
567    mUid = uid;
568    mRetransmitEndpointValid = false;
569    mAudioAttributes = NULL;
570
571#if CALLBACK_ANTAGONIZER
572    ALOGD("create Antagonizer");
573    mAntagonizer = new Antagonizer(notify, this);
574#endif
575}
576
577MediaPlayerService::Client::~Client()
578{
579    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
580    mAudioOutput.clear();
581    wp<Client> client(this);
582    disconnect();
583    mService->removeClient(client);
584    if (mAudioAttributes != NULL) {
585        free(mAudioAttributes);
586    }
587    clearDeathNotifiers();
588}
589
590void MediaPlayerService::Client::disconnect()
591{
592    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
593    // grab local reference and clear main reference to prevent future
594    // access to object
595    sp<MediaPlayerBase> p;
596    {
597        Mutex::Autolock l(mLock);
598        p = mPlayer;
599        mClient.clear();
600    }
601
602    mPlayer.clear();
603
604    // clear the notification to prevent callbacks to dead client
605    // and reset the player. We assume the player will serialize
606    // access to itself if necessary.
607    if (p != 0) {
608        p->setNotifyCallback(0, 0);
609#if CALLBACK_ANTAGONIZER
610        ALOGD("kill Antagonizer");
611        mAntagonizer->kill();
612#endif
613        p->reset();
614    }
615
616    disconnectNativeWindow();
617
618    IPCThreadState::self()->flushCommands();
619}
620
621sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
622{
623    // determine if we have the right player type
624    sp<MediaPlayerBase> p = mPlayer;
625    if ((p != NULL) && (p->playerType() != playerType)) {
626        ALOGV("delete player");
627        p.clear();
628    }
629    if (p == NULL) {
630        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
631    }
632
633    if (p != NULL) {
634        p->setUID(mUid);
635    }
636
637    return p;
638}
639
640MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
641        const sp<IBinder>& service,
642        const sp<MediaPlayerBase>& listener,
643        int which) {
644    mService = service;
645    mOmx = nullptr;
646    mListener = listener;
647    mWhich = which;
648}
649
650MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
651        const sp<IOmx>& omx,
652        const sp<MediaPlayerBase>& listener,
653        int which) {
654    mService = nullptr;
655    mOmx = omx;
656    mListener = listener;
657    mWhich = which;
658}
659
660MediaPlayerService::Client::ServiceDeathNotifier::~ServiceDeathNotifier() {
661}
662
663void MediaPlayerService::Client::ServiceDeathNotifier::binderDied(const wp<IBinder>& /*who*/) {
664    sp<MediaPlayerBase> listener = mListener.promote();
665    if (listener != NULL) {
666        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
667    } else {
668        ALOGW("listener for process %d death is gone", mWhich);
669    }
670}
671
672void MediaPlayerService::Client::ServiceDeathNotifier::serviceDied(
673        uint64_t /* cookie */,
674        const wp<::android::hidl::base::V1_0::IBase>& /* who */) {
675    sp<MediaPlayerBase> listener = mListener.promote();
676    if (listener != NULL) {
677        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
678    } else {
679        ALOGW("listener for process %d death is gone", mWhich);
680    }
681}
682
683void MediaPlayerService::Client::ServiceDeathNotifier::unlinkToDeath() {
684    if (mService != nullptr) {
685        mService->unlinkToDeath(this);
686        mService = nullptr;
687    } else if (mOmx != nullptr) {
688        mOmx->unlinkToDeath(this);
689        mOmx = nullptr;
690    }
691}
692
693void MediaPlayerService::Client::clearDeathNotifiers() {
694    if (mExtractorDeathListener != nullptr) {
695        mExtractorDeathListener->unlinkToDeath();
696        mExtractorDeathListener = nullptr;
697    }
698    if (mCodecDeathListener != nullptr) {
699        mCodecDeathListener->unlinkToDeath();
700        mCodecDeathListener = nullptr;
701    }
702}
703
704sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
705        player_type playerType)
706{
707    ALOGV("player type = %d", playerType);
708    clearDeathNotifiers();
709
710    // create the right type of player
711    sp<MediaPlayerBase> p = createPlayer(playerType);
712    if (p == NULL) {
713        return p;
714    }
715
716    sp<IServiceManager> sm = defaultServiceManager();
717    sp<IBinder> binder = sm->getService(String16("media.extractor"));
718    if (binder == NULL) {
719        ALOGE("extractor service not available");
720        return NULL;
721    }
722    mExtractorDeathListener = new ServiceDeathNotifier(binder, p, MEDIAEXTRACTOR_PROCESS_DEATH);
723    binder->linkToDeath(mExtractorDeathListener);
724
725    if (property_get_bool("persist.media.treble_omx", true)) {
726        // Treble IOmx
727        sp<IOmx> omx = IOmx::getService();
728        if (omx == nullptr) {
729            ALOGE("Treble IOmx not available");
730            return NULL;
731        }
732        mCodecDeathListener = new ServiceDeathNotifier(omx, p, MEDIACODEC_PROCESS_DEATH);
733        omx->linkToDeath(mCodecDeathListener, 0);
734    } else {
735        // Legacy IOMX
736        binder = sm->getService(String16("media.codec"));
737        if (binder == NULL) {
738            ALOGE("codec service not available");
739            return NULL;
740        }
741        mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
742        binder->linkToDeath(mCodecDeathListener);
743    }
744
745    if (!p->hardwareOutput()) {
746        Mutex::Autolock l(mLock);
747        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
748                mPid, mAudioAttributes);
749        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
750    }
751
752    return p;
753}
754
755void MediaPlayerService::Client::setDataSource_post(
756        const sp<MediaPlayerBase>& p,
757        status_t status)
758{
759    ALOGV(" setDataSource");
760    mStatus = status;
761    if (mStatus != OK) {
762        ALOGE("  error: %d", mStatus);
763        return;
764    }
765
766    // Set the re-transmission endpoint if one was chosen.
767    if (mRetransmitEndpointValid) {
768        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
769        if (mStatus != NO_ERROR) {
770            ALOGE("setRetransmitEndpoint error: %d", mStatus);
771        }
772    }
773
774    if (mStatus == OK) {
775        mPlayer = p;
776    }
777}
778
779status_t MediaPlayerService::Client::setDataSource(
780        const sp<IMediaHTTPService> &httpService,
781        const char *url,
782        const KeyedVector<String8, String8> *headers)
783{
784    ALOGV("setDataSource(%s)", url);
785    if (url == NULL)
786        return UNKNOWN_ERROR;
787
788    if ((strncmp(url, "http://", 7) == 0) ||
789        (strncmp(url, "https://", 8) == 0) ||
790        (strncmp(url, "rtsp://", 7) == 0)) {
791        if (!checkPermission("android.permission.INTERNET")) {
792            return PERMISSION_DENIED;
793        }
794    }
795
796    if (strncmp(url, "content://", 10) == 0) {
797        // get a filedescriptor for the content Uri and
798        // pass it to the setDataSource(fd) method
799
800        String16 url16(url);
801        int fd = android::openContentProviderFile(url16);
802        if (fd < 0)
803        {
804            ALOGE("Couldn't open fd for %s", url);
805            return UNKNOWN_ERROR;
806        }
807        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
808        close(fd);
809        return mStatus;
810    } else {
811        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
812        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
813        if (p == NULL) {
814            return NO_INIT;
815        }
816
817        setDataSource_post(p, p->setDataSource(httpService, url, headers));
818        return mStatus;
819    }
820}
821
822status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
823{
824    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
825            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
826    struct stat sb;
827    int ret = fstat(fd, &sb);
828    if (ret != 0) {
829        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
830        return UNKNOWN_ERROR;
831    }
832
833    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
834    ALOGV("st_mode = %u", sb.st_mode);
835    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
836    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
837    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
838
839    if (offset >= sb.st_size) {
840        ALOGE("offset error");
841        return UNKNOWN_ERROR;
842    }
843    if (offset + length > sb.st_size) {
844        length = sb.st_size - offset;
845        ALOGV("calculated length = %lld", (long long)length);
846    }
847
848    player_type playerType = MediaPlayerFactory::getPlayerType(this,
849                                                               fd,
850                                                               offset,
851                                                               length);
852    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
853    if (p == NULL) {
854        return NO_INIT;
855    }
856
857    // now set data source
858    setDataSource_post(p, p->setDataSource(fd, offset, length));
859    return mStatus;
860}
861
862status_t MediaPlayerService::Client::setDataSource(
863        const sp<IStreamSource> &source) {
864    // create the right type of player
865    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
866    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
867    if (p == NULL) {
868        return NO_INIT;
869    }
870
871    // now set data source
872    setDataSource_post(p, p->setDataSource(source));
873    return mStatus;
874}
875
876status_t MediaPlayerService::Client::setDataSource(
877        const sp<IDataSource> &source) {
878    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
879    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
880    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
881    if (p == NULL) {
882        return NO_INIT;
883    }
884    // now set data source
885    setDataSource_post(p, p->setDataSource(dataSource));
886    return mStatus;
887}
888
889void MediaPlayerService::Client::disconnectNativeWindow() {
890    if (mConnectedWindow != NULL) {
891        status_t err = nativeWindowDisconnect(
892                mConnectedWindow.get(), "disconnectNativeWindow");
893
894        if (err != OK) {
895            ALOGW("nativeWindowDisconnect returned an error: %s (%d)",
896                    strerror(-err), err);
897        }
898    }
899    mConnectedWindow.clear();
900}
901
902status_t MediaPlayerService::Client::setVideoSurfaceTexture(
903        const sp<IGraphicBufferProducer>& bufferProducer)
904{
905    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
906    sp<MediaPlayerBase> p = getPlayer();
907    if (p == 0) return UNKNOWN_ERROR;
908
909    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
910    if (mConnectedWindowBinder == binder) {
911        return OK;
912    }
913
914    sp<ANativeWindow> anw;
915    if (bufferProducer != NULL) {
916        anw = new Surface(bufferProducer, true /* controlledByApp */);
917        status_t err = nativeWindowConnect(anw.get(), "setVideoSurfaceTexture");
918
919        if (err != OK) {
920            ALOGE("setVideoSurfaceTexture failed: %d", err);
921            // Note that we must do the reset before disconnecting from the ANW.
922            // Otherwise queue/dequeue calls could be made on the disconnected
923            // ANW, which may result in errors.
924            reset();
925
926            disconnectNativeWindow();
927
928            return err;
929        }
930    }
931
932    // Note that we must set the player's new GraphicBufferProducer before
933    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
934    // on the disconnected ANW, which may result in errors.
935    status_t err = p->setVideoSurfaceTexture(bufferProducer);
936
937    disconnectNativeWindow();
938
939    mConnectedWindow = anw;
940
941    if (err == OK) {
942        mConnectedWindowBinder = binder;
943    } else {
944        disconnectNativeWindow();
945    }
946
947    return err;
948}
949
950status_t MediaPlayerService::Client::invoke(const Parcel& request,
951                                            Parcel *reply)
952{
953    sp<MediaPlayerBase> p = getPlayer();
954    if (p == NULL) return UNKNOWN_ERROR;
955    return p->invoke(request, reply);
956}
957
958// This call doesn't need to access the native player.
959status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
960{
961    status_t status;
962    media::Metadata::Filter allow, drop;
963
964    if (unmarshallFilter(filter, &allow, &status) &&
965        unmarshallFilter(filter, &drop, &status)) {
966        Mutex::Autolock lock(mLock);
967
968        mMetadataAllow = allow;
969        mMetadataDrop = drop;
970    }
971    return status;
972}
973
974status_t MediaPlayerService::Client::getMetadata(
975        bool update_only, bool /*apply_filter*/, Parcel *reply)
976{
977    sp<MediaPlayerBase> player = getPlayer();
978    if (player == 0) return UNKNOWN_ERROR;
979
980    status_t status;
981    // Placeholder for the return code, updated by the caller.
982    reply->writeInt32(-1);
983
984    media::Metadata::Filter ids;
985
986    // We don't block notifications while we fetch the data. We clear
987    // mMetadataUpdated first so we don't lose notifications happening
988    // during the rest of this call.
989    {
990        Mutex::Autolock lock(mLock);
991        if (update_only) {
992            ids = mMetadataUpdated;
993        }
994        mMetadataUpdated.clear();
995    }
996
997    media::Metadata metadata(reply);
998
999    metadata.appendHeader();
1000    status = player->getMetadata(ids, reply);
1001
1002    if (status != OK) {
1003        metadata.resetParcel();
1004        ALOGE("getMetadata failed %d", status);
1005        return status;
1006    }
1007
1008    // FIXME: Implement filtering on the result. Not critical since
1009    // filtering takes place on the update notifications already. This
1010    // would be when all the metadata are fetch and a filter is set.
1011
1012    // Everything is fine, update the metadata length.
1013    metadata.updateLength();
1014    return OK;
1015}
1016
1017status_t MediaPlayerService::Client::setBufferingSettings(
1018        const BufferingSettings& buffering)
1019{
1020    ALOGV("[%d] setBufferingSettings{%s}",
1021            mConnId, buffering.toString().string());
1022    sp<MediaPlayerBase> p = getPlayer();
1023    if (p == 0) return UNKNOWN_ERROR;
1024    return p->setBufferingSettings(buffering);
1025}
1026
1027status_t MediaPlayerService::Client::getDefaultBufferingSettings(
1028        BufferingSettings* buffering /* nonnull */)
1029{
1030    sp<MediaPlayerBase> p = getPlayer();
1031    // TODO: create mPlayer on demand.
1032    if (p == 0) return UNKNOWN_ERROR;
1033    status_t ret = p->getDefaultBufferingSettings(buffering);
1034    if (ret == NO_ERROR) {
1035        ALOGV("[%d] getDefaultBufferingSettings{%s}",
1036                mConnId, buffering->toString().string());
1037    } else {
1038        ALOGV("[%d] getDefaultBufferingSettings returned %d", mConnId, ret);
1039    }
1040    return ret;
1041}
1042
1043status_t MediaPlayerService::Client::prepareAsync()
1044{
1045    ALOGV("[%d] prepareAsync", mConnId);
1046    sp<MediaPlayerBase> p = getPlayer();
1047    if (p == 0) return UNKNOWN_ERROR;
1048    status_t ret = p->prepareAsync();
1049#if CALLBACK_ANTAGONIZER
1050    ALOGD("start Antagonizer");
1051    if (ret == NO_ERROR) mAntagonizer->start();
1052#endif
1053    return ret;
1054}
1055
1056status_t MediaPlayerService::Client::start()
1057{
1058    ALOGV("[%d] start", mConnId);
1059    sp<MediaPlayerBase> p = getPlayer();
1060    if (p == 0) return UNKNOWN_ERROR;
1061    p->setLooping(mLoop);
1062    return p->start();
1063}
1064
1065status_t MediaPlayerService::Client::stop()
1066{
1067    ALOGV("[%d] stop", mConnId);
1068    sp<MediaPlayerBase> p = getPlayer();
1069    if (p == 0) return UNKNOWN_ERROR;
1070    return p->stop();
1071}
1072
1073status_t MediaPlayerService::Client::pause()
1074{
1075    ALOGV("[%d] pause", mConnId);
1076    sp<MediaPlayerBase> p = getPlayer();
1077    if (p == 0) return UNKNOWN_ERROR;
1078    return p->pause();
1079}
1080
1081status_t MediaPlayerService::Client::isPlaying(bool* state)
1082{
1083    *state = false;
1084    sp<MediaPlayerBase> p = getPlayer();
1085    if (p == 0) return UNKNOWN_ERROR;
1086    *state = p->isPlaying();
1087    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1088    return NO_ERROR;
1089}
1090
1091status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1092{
1093    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1094            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1095    sp<MediaPlayerBase> p = getPlayer();
1096    if (p == 0) return UNKNOWN_ERROR;
1097    return p->setPlaybackSettings(rate);
1098}
1099
1100status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1101{
1102    sp<MediaPlayerBase> p = getPlayer();
1103    if (p == 0) return UNKNOWN_ERROR;
1104    status_t ret = p->getPlaybackSettings(rate);
1105    if (ret == NO_ERROR) {
1106        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1107                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1108    } else {
1109        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1110    }
1111    return ret;
1112}
1113
1114status_t MediaPlayerService::Client::setSyncSettings(
1115        const AVSyncSettings& sync, float videoFpsHint)
1116{
1117    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1118            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1119    sp<MediaPlayerBase> p = getPlayer();
1120    if (p == 0) return UNKNOWN_ERROR;
1121    return p->setSyncSettings(sync, videoFpsHint);
1122}
1123
1124status_t MediaPlayerService::Client::getSyncSettings(
1125        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1126{
1127    sp<MediaPlayerBase> p = getPlayer();
1128    if (p == 0) return UNKNOWN_ERROR;
1129    status_t ret = p->getSyncSettings(sync, videoFps);
1130    if (ret == NO_ERROR) {
1131        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1132                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1133    } else {
1134        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1135    }
1136    return ret;
1137}
1138
1139status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1140{
1141    ALOGV("getCurrentPosition");
1142    sp<MediaPlayerBase> p = getPlayer();
1143    if (p == 0) return UNKNOWN_ERROR;
1144    status_t ret = p->getCurrentPosition(msec);
1145    if (ret == NO_ERROR) {
1146        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1147    } else {
1148        ALOGE("getCurrentPosition returned %d", ret);
1149    }
1150    return ret;
1151}
1152
1153status_t MediaPlayerService::Client::getDuration(int *msec)
1154{
1155    ALOGV("getDuration");
1156    sp<MediaPlayerBase> p = getPlayer();
1157    if (p == 0) return UNKNOWN_ERROR;
1158    status_t ret = p->getDuration(msec);
1159    if (ret == NO_ERROR) {
1160        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1161    } else {
1162        ALOGE("getDuration returned %d", ret);
1163    }
1164    return ret;
1165}
1166
1167status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1168    ALOGV("setNextPlayer");
1169    Mutex::Autolock l(mLock);
1170    sp<Client> c = static_cast<Client*>(player.get());
1171    if (c != NULL && !mService->hasClient(c)) {
1172      return BAD_VALUE;
1173    }
1174
1175    mNextClient = c;
1176
1177    if (c != NULL) {
1178        if (mAudioOutput != NULL) {
1179            mAudioOutput->setNextOutput(c->mAudioOutput);
1180        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1181            ALOGE("no current audio output");
1182        }
1183
1184        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1185            mPlayer->setNextPlayer(mNextClient->getPlayer());
1186        }
1187    }
1188
1189    return OK;
1190}
1191
1192VolumeShaper::Status MediaPlayerService::Client::applyVolumeShaper(
1193        const sp<VolumeShaper::Configuration>& configuration,
1194        const sp<VolumeShaper::Operation>& operation) {
1195    // for hardware output, call player instead
1196    ALOGV("Client::applyVolumeShaper(%p)", this);
1197    sp<MediaPlayerBase> p = getPlayer();
1198    {
1199        Mutex::Autolock l(mLock);
1200        if (p != 0 && p->hardwareOutput()) {
1201            // TODO: investigate internal implementation
1202            return VolumeShaper::Status(INVALID_OPERATION);
1203        }
1204        if (mAudioOutput.get() != nullptr) {
1205            return mAudioOutput->applyVolumeShaper(configuration, operation);
1206        }
1207    }
1208    return VolumeShaper::Status(INVALID_OPERATION);
1209}
1210
1211sp<VolumeShaper::State> MediaPlayerService::Client::getVolumeShaperState(int id) {
1212    // for hardware output, call player instead
1213    ALOGV("Client::getVolumeShaperState(%p)", this);
1214    sp<MediaPlayerBase> p = getPlayer();
1215    {
1216        Mutex::Autolock l(mLock);
1217        if (p != 0 && p->hardwareOutput()) {
1218            // TODO: investigate internal implementation.
1219            return nullptr;
1220        }
1221        if (mAudioOutput.get() != nullptr) {
1222            return mAudioOutput->getVolumeShaperState(id);
1223        }
1224    }
1225    return nullptr;
1226}
1227
1228status_t MediaPlayerService::Client::seekTo(int msec, MediaPlayerSeekMode mode)
1229{
1230    ALOGV("[%d] seekTo(%d, %d)", mConnId, msec, mode);
1231    sp<MediaPlayerBase> p = getPlayer();
1232    if (p == 0) return UNKNOWN_ERROR;
1233    return p->seekTo(msec, mode);
1234}
1235
1236status_t MediaPlayerService::Client::reset()
1237{
1238    ALOGV("[%d] reset", mConnId);
1239    mRetransmitEndpointValid = false;
1240    sp<MediaPlayerBase> p = getPlayer();
1241    if (p == 0) return UNKNOWN_ERROR;
1242    return p->reset();
1243}
1244
1245status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1246{
1247    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1248    // TODO: for hardware output, call player instead
1249    Mutex::Autolock l(mLock);
1250    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1251    return NO_ERROR;
1252}
1253
1254status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1255{
1256    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1257    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1258    if (mAudioAttributes == NULL) {
1259        return NO_MEMORY;
1260    }
1261    unmarshallAudioAttributes(parcel, mAudioAttributes);
1262
1263    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1264            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1265            mAudioAttributes->tags);
1266
1267    if (mAudioOutput != 0) {
1268        mAudioOutput->setAudioAttributes(mAudioAttributes);
1269    }
1270    return NO_ERROR;
1271}
1272
1273status_t MediaPlayerService::Client::setLooping(int loop)
1274{
1275    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1276    mLoop = loop;
1277    sp<MediaPlayerBase> p = getPlayer();
1278    if (p != 0) return p->setLooping(loop);
1279    return NO_ERROR;
1280}
1281
1282status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1283{
1284    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1285
1286    // for hardware output, call player instead
1287    sp<MediaPlayerBase> p = getPlayer();
1288    {
1289      Mutex::Autolock l(mLock);
1290      if (p != 0 && p->hardwareOutput()) {
1291          MediaPlayerHWInterface* hwp =
1292                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1293          return hwp->setVolume(leftVolume, rightVolume);
1294      } else {
1295          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1296          return NO_ERROR;
1297      }
1298    }
1299
1300    return NO_ERROR;
1301}
1302
1303status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1304{
1305    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1306    Mutex::Autolock l(mLock);
1307    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1308    return NO_ERROR;
1309}
1310
1311status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1312{
1313    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1314    Mutex::Autolock l(mLock);
1315    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1316    return NO_ERROR;
1317}
1318
1319status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1320    ALOGV("[%d] setParameter(%d)", mConnId, key);
1321    switch (key) {
1322    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1323    {
1324        Mutex::Autolock l(mLock);
1325        return setAudioAttributes_l(request);
1326    }
1327    default:
1328        sp<MediaPlayerBase> p = getPlayer();
1329        if (p == 0) { return UNKNOWN_ERROR; }
1330        return p->setParameter(key, request);
1331    }
1332}
1333
1334status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1335    ALOGV("[%d] getParameter(%d)", mConnId, key);
1336    sp<MediaPlayerBase> p = getPlayer();
1337    if (p == 0) return UNKNOWN_ERROR;
1338    return p->getParameter(key, reply);
1339}
1340
1341status_t MediaPlayerService::Client::setRetransmitEndpoint(
1342        const struct sockaddr_in* endpoint) {
1343
1344    if (NULL != endpoint) {
1345        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1346        uint16_t p = ntohs(endpoint->sin_port);
1347        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1348                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1349    } else {
1350        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1351    }
1352
1353    sp<MediaPlayerBase> p = getPlayer();
1354
1355    // Right now, the only valid time to set a retransmit endpoint is before
1356    // player selection has been made (since the presence or absence of a
1357    // retransmit endpoint is going to determine which player is selected during
1358    // setDataSource).
1359    if (p != 0) return INVALID_OPERATION;
1360
1361    if (NULL != endpoint) {
1362        mRetransmitEndpoint = *endpoint;
1363        mRetransmitEndpointValid = true;
1364    } else {
1365        mRetransmitEndpointValid = false;
1366    }
1367
1368    return NO_ERROR;
1369}
1370
1371status_t MediaPlayerService::Client::getRetransmitEndpoint(
1372        struct sockaddr_in* endpoint)
1373{
1374    if (NULL == endpoint)
1375        return BAD_VALUE;
1376
1377    sp<MediaPlayerBase> p = getPlayer();
1378
1379    if (p != NULL)
1380        return p->getRetransmitEndpoint(endpoint);
1381
1382    if (!mRetransmitEndpointValid)
1383        return NO_INIT;
1384
1385    *endpoint = mRetransmitEndpoint;
1386
1387    return NO_ERROR;
1388}
1389
1390void MediaPlayerService::Client::notify(
1391        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1392{
1393    Client* client = static_cast<Client*>(cookie);
1394    if (client == NULL) {
1395        return;
1396    }
1397
1398    sp<IMediaPlayerClient> c;
1399    sp<Client> nextClient;
1400    status_t errStartNext = NO_ERROR;
1401    {
1402        Mutex::Autolock l(client->mLock);
1403        c = client->mClient;
1404        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1405            nextClient = client->mNextClient;
1406
1407            if (client->mAudioOutput != NULL)
1408                client->mAudioOutput->switchToNextOutput();
1409
1410            errStartNext = nextClient->start();
1411        }
1412    }
1413
1414    if (nextClient != NULL) {
1415        sp<IMediaPlayerClient> nc;
1416        {
1417            Mutex::Autolock l(nextClient->mLock);
1418            nc = nextClient->mClient;
1419        }
1420        if (nc != NULL) {
1421            if (errStartNext == NO_ERROR) {
1422                nc->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1423            } else {
1424                nc->notify(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN , 0, obj);
1425                ALOGE("gapless:start playback for next track failed, err(%d)", errStartNext);
1426            }
1427        }
1428    }
1429
1430    if (MEDIA_INFO == msg &&
1431        MEDIA_INFO_METADATA_UPDATE == ext1) {
1432        const media::Metadata::Type metadata_type = ext2;
1433
1434        if(client->shouldDropMetadata(metadata_type)) {
1435            return;
1436        }
1437
1438        // Update the list of metadata that have changed. getMetadata
1439        // also access mMetadataUpdated and clears it.
1440        client->addNewMetadataUpdate(metadata_type);
1441    }
1442
1443    if (c != NULL) {
1444        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1445        c->notify(msg, ext1, ext2, obj);
1446    }
1447}
1448
1449
1450bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1451{
1452    Mutex::Autolock lock(mLock);
1453
1454    if (findMetadata(mMetadataDrop, code)) {
1455        return true;
1456    }
1457
1458    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1459        return false;
1460    } else {
1461        return true;
1462    }
1463}
1464
1465
1466void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1467    Mutex::Autolock lock(mLock);
1468    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1469        mMetadataUpdated.add(metadata_type);
1470    }
1471}
1472
1473// Modular DRM
1474status_t MediaPlayerService::Client::prepareDrm(const uint8_t uuid[16],
1475        const Vector<uint8_t>& drmSessionId)
1476{
1477    ALOGV("[%d] prepareDrm", mConnId);
1478    sp<MediaPlayerBase> p = getPlayer();
1479    if (p == 0) return UNKNOWN_ERROR;
1480
1481    status_t ret = p->prepareDrm(uuid, drmSessionId);
1482    ALOGV("prepareDrm ret: %d", ret);
1483
1484    return ret;
1485}
1486
1487status_t MediaPlayerService::Client::releaseDrm()
1488{
1489    ALOGV("[%d] releaseDrm", mConnId);
1490    sp<MediaPlayerBase> p = getPlayer();
1491    if (p == 0) return UNKNOWN_ERROR;
1492
1493    status_t ret = p->releaseDrm();
1494    ALOGV("releaseDrm ret: %d", ret);
1495
1496    return ret;
1497}
1498
1499#if CALLBACK_ANTAGONIZER
1500const int Antagonizer::interval = 10000; // 10 msecs
1501
1502Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1503    mExit(false), mActive(false), mClient(client), mCb(cb)
1504{
1505    createThread(callbackThread, this);
1506}
1507
1508void Antagonizer::kill()
1509{
1510    Mutex::Autolock _l(mLock);
1511    mActive = false;
1512    mExit = true;
1513    mCondition.wait(mLock);
1514}
1515
1516int Antagonizer::callbackThread(void* user)
1517{
1518    ALOGD("Antagonizer started");
1519    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1520    while (!p->mExit) {
1521        if (p->mActive) {
1522            ALOGV("send event");
1523            p->mCb(p->mClient, 0, 0, 0);
1524        }
1525        usleep(interval);
1526    }
1527    Mutex::Autolock _l(p->mLock);
1528    p->mCondition.signal();
1529    ALOGD("Antagonizer stopped");
1530    return 0;
1531}
1532#endif
1533
1534#undef LOG_TAG
1535#define LOG_TAG "AudioSink"
1536MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, uid_t uid, int pid,
1537        const audio_attributes_t* attr)
1538    : mCallback(NULL),
1539      mCallbackCookie(NULL),
1540      mCallbackData(NULL),
1541      mStreamType(AUDIO_STREAM_MUSIC),
1542      mLeftVolume(1.0),
1543      mRightVolume(1.0),
1544      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1545      mSampleRateHz(0),
1546      mMsecsPerFrame(0),
1547      mFrameSize(0),
1548      mSessionId(sessionId),
1549      mUid(uid),
1550      mPid(pid),
1551      mSendLevel(0.0),
1552      mAuxEffectId(0),
1553      mFlags(AUDIO_OUTPUT_FLAG_NONE),
1554      mVolumeHandler(new VolumeHandler())
1555{
1556    ALOGV("AudioOutput(%d)", sessionId);
1557    if (attr != NULL) {
1558        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1559        if (mAttributes != NULL) {
1560            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1561            mStreamType = audio_attributes_to_stream_type(attr);
1562        }
1563    } else {
1564        mAttributes = NULL;
1565    }
1566
1567    setMinBufferCount();
1568}
1569
1570MediaPlayerService::AudioOutput::~AudioOutput()
1571{
1572    close();
1573    free(mAttributes);
1574    delete mCallbackData;
1575}
1576
1577//static
1578void MediaPlayerService::AudioOutput::setMinBufferCount()
1579{
1580    char value[PROPERTY_VALUE_MAX];
1581    if (property_get("ro.kernel.qemu", value, 0)) {
1582        mIsOnEmulator = true;
1583        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1584    }
1585}
1586
1587// static
1588bool MediaPlayerService::AudioOutput::isOnEmulator()
1589{
1590    setMinBufferCount(); // benign race wrt other threads
1591    return mIsOnEmulator;
1592}
1593
1594// static
1595int MediaPlayerService::AudioOutput::getMinBufferCount()
1596{
1597    setMinBufferCount(); // benign race wrt other threads
1598    return mMinBufferCount;
1599}
1600
1601ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1602{
1603    Mutex::Autolock lock(mLock);
1604    if (mTrack == 0) return NO_INIT;
1605    return mTrack->frameCount() * mFrameSize;
1606}
1607
1608ssize_t MediaPlayerService::AudioOutput::frameCount() const
1609{
1610    Mutex::Autolock lock(mLock);
1611    if (mTrack == 0) return NO_INIT;
1612    return mTrack->frameCount();
1613}
1614
1615ssize_t MediaPlayerService::AudioOutput::channelCount() const
1616{
1617    Mutex::Autolock lock(mLock);
1618    if (mTrack == 0) return NO_INIT;
1619    return mTrack->channelCount();
1620}
1621
1622ssize_t MediaPlayerService::AudioOutput::frameSize() const
1623{
1624    Mutex::Autolock lock(mLock);
1625    if (mTrack == 0) return NO_INIT;
1626    return mFrameSize;
1627}
1628
1629uint32_t MediaPlayerService::AudioOutput::latency () const
1630{
1631    Mutex::Autolock lock(mLock);
1632    if (mTrack == 0) return 0;
1633    return mTrack->latency();
1634}
1635
1636float MediaPlayerService::AudioOutput::msecsPerFrame() const
1637{
1638    Mutex::Autolock lock(mLock);
1639    return mMsecsPerFrame;
1640}
1641
1642status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1643{
1644    Mutex::Autolock lock(mLock);
1645    if (mTrack == 0) return NO_INIT;
1646    return mTrack->getPosition(position);
1647}
1648
1649status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1650{
1651    Mutex::Autolock lock(mLock);
1652    if (mTrack == 0) return NO_INIT;
1653    return mTrack->getTimestamp(ts);
1654}
1655
1656// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1657// as it acquires locks and may query the audio driver.
1658//
1659// Some calls could conceivably retrieve extrapolated data instead of
1660// accessing getTimestamp() or getPosition() every time a data buffer with
1661// a media time is received.
1662//
1663// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1664int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1665{
1666    Mutex::Autolock lock(mLock);
1667    if (mTrack == 0 || mSampleRateHz == 0) {
1668        return 0;
1669    }
1670
1671    uint32_t numFramesPlayed;
1672    int64_t numFramesPlayedAtUs;
1673    AudioTimestamp ts;
1674
1675    status_t res = mTrack->getTimestamp(ts);
1676    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1677        numFramesPlayed = ts.mPosition;
1678        numFramesPlayedAtUs = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1679        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1680    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1681        numFramesPlayed = 0;
1682        numFramesPlayedAtUs = nowUs;
1683        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1684        //        numFramesPlayed, (long long)numFramesPlayedAtUs);
1685    } else {                         // case 3: transitory at new track or audio fast tracks.
1686        res = mTrack->getPosition(&numFramesPlayed);
1687        CHECK_EQ(res, (status_t)OK);
1688        numFramesPlayedAtUs = nowUs;
1689        numFramesPlayedAtUs += 1000LL * mTrack->latency() / 2; /* XXX */
1690        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1691    }
1692
1693    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1694    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1695    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1696            + nowUs - numFramesPlayedAtUs;
1697    if (durationUs < 0) {
1698        // Occurs when numFramesPlayed position is very small and the following:
1699        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1700        //     numFramesPlayedAtUs is greater than nowUs by time more than numFramesPlayed.
1701        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1702        //     numFramesPlayedAtUs, by a time amount greater than numFramesPlayed.
1703        //
1704        // Both of these are transitory conditions.
1705        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1706        durationUs = 0;
1707    }
1708    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1709            (long long)durationUs, (long long)nowUs,
1710            numFramesPlayed, (long long)numFramesPlayedAtUs);
1711    return durationUs;
1712}
1713
1714status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1715{
1716    Mutex::Autolock lock(mLock);
1717    if (mTrack == 0) return NO_INIT;
1718    ExtendedTimestamp ets;
1719    status_t status = mTrack->getTimestamp(&ets);
1720    if (status == OK || status == WOULD_BLOCK) {
1721        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1722    }
1723    return status;
1724}
1725
1726status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1727{
1728    Mutex::Autolock lock(mLock);
1729    if (mTrack == 0) return NO_INIT;
1730    return mTrack->setParameters(keyValuePairs);
1731}
1732
1733String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1734{
1735    Mutex::Autolock lock(mLock);
1736    if (mTrack == 0) return String8::empty();
1737    return mTrack->getParameters(keys);
1738}
1739
1740void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1741    Mutex::Autolock lock(mLock);
1742    if (attributes == NULL) {
1743        free(mAttributes);
1744        mAttributes = NULL;
1745    } else {
1746        if (mAttributes == NULL) {
1747            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1748        }
1749        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1750        mStreamType = audio_attributes_to_stream_type(attributes);
1751    }
1752}
1753
1754void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1755{
1756    Mutex::Autolock lock(mLock);
1757    // do not allow direct stream type modification if attributes have been set
1758    if (mAttributes == NULL) {
1759        mStreamType = streamType;
1760    }
1761}
1762
1763void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1764{
1765    ALOGV("deleteRecycledTrack_l");
1766    if (mRecycledTrack != 0) {
1767
1768        if (mCallbackData != NULL) {
1769            mCallbackData->setOutput(NULL);
1770            mCallbackData->endTrackSwitch();
1771        }
1772
1773        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1774            int32_t msec = 0;
1775            if (!mRecycledTrack->stopped()) { // check if active
1776                 (void)mRecycledTrack->pendingDuration(&msec);
1777            }
1778            mRecycledTrack->stop(); // ensure full data drain
1779            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1780            if (msec > 0) {
1781                static const int32_t WAIT_LIMIT_MS = 3000;
1782                if (msec > WAIT_LIMIT_MS) {
1783                    msec = WAIT_LIMIT_MS;
1784                }
1785                usleep(msec * 1000LL);
1786            }
1787        }
1788        // An offloaded track isn't flushed because the STREAM_END is reported
1789        // slightly prematurely to allow time for the gapless track switch
1790        // but this means that if we decide not to recycle the track there
1791        // could be a small amount of residual data still playing. We leave
1792        // AudioFlinger to drain the track.
1793
1794        mRecycledTrack.clear();
1795        close_l();
1796        delete mCallbackData;
1797        mCallbackData = NULL;
1798    }
1799}
1800
1801void MediaPlayerService::AudioOutput::close_l()
1802{
1803    mTrack.clear();
1804}
1805
1806status_t MediaPlayerService::AudioOutput::open(
1807        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1808        audio_format_t format, int bufferCount,
1809        AudioCallback cb, void *cookie,
1810        audio_output_flags_t flags,
1811        const audio_offload_info_t *offloadInfo,
1812        bool doNotReconnect,
1813        uint32_t suggestedFrameCount)
1814{
1815    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1816                format, bufferCount, mSessionId, flags);
1817
1818    // offloading is only supported in callback mode for now.
1819    // offloadInfo must be present if offload flag is set
1820    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1821            ((cb == NULL) || (offloadInfo == NULL))) {
1822        return BAD_VALUE;
1823    }
1824
1825    // compute frame count for the AudioTrack internal buffer
1826    size_t frameCount;
1827    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1828        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1829    } else {
1830        // try to estimate the buffer processing fetch size from AudioFlinger.
1831        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1832        uint32_t afSampleRate;
1833        size_t afFrameCount;
1834        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1835            return NO_INIT;
1836        }
1837        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1838            return NO_INIT;
1839        }
1840        const size_t framesPerBuffer =
1841                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1842
1843        if (bufferCount == 0) {
1844            // use suggestedFrameCount
1845            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1846        }
1847        // Check argument bufferCount against the mininum buffer count
1848        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1849            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1850            bufferCount = mMinBufferCount;
1851        }
1852        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1853        // which will be the minimum size permitted.
1854        frameCount = bufferCount * framesPerBuffer;
1855    }
1856
1857    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1858        channelMask = audio_channel_out_mask_from_count(channelCount);
1859        if (0 == channelMask) {
1860            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1861            return NO_INIT;
1862        }
1863    }
1864
1865    Mutex::Autolock lock(mLock);
1866    mCallback = cb;
1867    mCallbackCookie = cookie;
1868
1869    // Check whether we can recycle the track
1870    bool reuse = false;
1871    bool bothOffloaded = false;
1872
1873    if (mRecycledTrack != 0) {
1874        // check whether we are switching between two offloaded tracks
1875        bothOffloaded = (flags & mRecycledTrack->getFlags()
1876                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1877
1878        // check if the existing track can be reused as-is, or if a new track needs to be created.
1879        reuse = true;
1880
1881        if ((mCallbackData == NULL && mCallback != NULL) ||
1882                (mCallbackData != NULL && mCallback == NULL)) {
1883            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1884            ALOGV("can't chain callback and write");
1885            reuse = false;
1886        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1887                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1888            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1889                  mRecycledTrack->getSampleRate(), sampleRate,
1890                  mRecycledTrack->channelCount(), channelCount);
1891            reuse = false;
1892        } else if (flags != mFlags) {
1893            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1894            reuse = false;
1895        } else if (mRecycledTrack->format() != format) {
1896            reuse = false;
1897        }
1898    } else {
1899        ALOGV("no track available to recycle");
1900    }
1901
1902    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1903
1904    // If we can't recycle and both tracks are offloaded
1905    // we must close the previous output before opening a new one
1906    if (bothOffloaded && !reuse) {
1907        ALOGV("both offloaded and not recycling");
1908        deleteRecycledTrack_l();
1909    }
1910
1911    sp<AudioTrack> t;
1912    CallbackData *newcbd = NULL;
1913
1914    // We don't attempt to create a new track if we are recycling an
1915    // offloaded track. But, if we are recycling a non-offloaded or we
1916    // are switching where one is offloaded and one isn't then we create
1917    // the new track in advance so that we can read additional stream info
1918
1919    if (!(reuse && bothOffloaded)) {
1920        ALOGV("creating new AudioTrack");
1921
1922        if (mCallback != NULL) {
1923            newcbd = new CallbackData(this);
1924            t = new AudioTrack(
1925                    mStreamType,
1926                    sampleRate,
1927                    format,
1928                    channelMask,
1929                    frameCount,
1930                    flags,
1931                    CallbackWrapper,
1932                    newcbd,
1933                    0,  // notification frames
1934                    mSessionId,
1935                    AudioTrack::TRANSFER_CALLBACK,
1936                    offloadInfo,
1937                    mUid,
1938                    mPid,
1939                    mAttributes,
1940                    doNotReconnect);
1941        } else {
1942            // TODO: Due to buffer memory concerns, we use a max target playback speed
1943            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1944            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1945            const float targetSpeed =
1946                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1947            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1948                    "track target speed:%f clamped from playback speed:%f",
1949                    targetSpeed, mPlaybackRate.mSpeed);
1950            t = new AudioTrack(
1951                    mStreamType,
1952                    sampleRate,
1953                    format,
1954                    channelMask,
1955                    frameCount,
1956                    flags,
1957                    NULL, // callback
1958                    NULL, // user data
1959                    0, // notification frames
1960                    mSessionId,
1961                    AudioTrack::TRANSFER_DEFAULT,
1962                    NULL, // offload info
1963                    mUid,
1964                    mPid,
1965                    mAttributes,
1966                    doNotReconnect,
1967                    targetSpeed);
1968        }
1969
1970        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1971            ALOGE("Unable to create audio track");
1972            delete newcbd;
1973            // t goes out of scope, so reference count drops to zero
1974            return NO_INIT;
1975        } else {
1976            // successful AudioTrack initialization implies a legacy stream type was generated
1977            // from the audio attributes
1978            mStreamType = t->streamType();
1979        }
1980    }
1981
1982    if (reuse) {
1983        CHECK(mRecycledTrack != NULL);
1984
1985        if (!bothOffloaded) {
1986            if (mRecycledTrack->frameCount() != t->frameCount()) {
1987                ALOGV("framecount differs: %zu/%zu frames",
1988                      mRecycledTrack->frameCount(), t->frameCount());
1989                reuse = false;
1990            }
1991        }
1992
1993        if (reuse) {
1994            ALOGV("chaining to next output and recycling track");
1995            close_l();
1996            mTrack = mRecycledTrack;
1997            mRecycledTrack.clear();
1998            if (mCallbackData != NULL) {
1999                mCallbackData->setOutput(this);
2000            }
2001            delete newcbd;
2002            return updateTrack();
2003        }
2004    }
2005
2006    // we're not going to reuse the track, unblock and flush it
2007    // this was done earlier if both tracks are offloaded
2008    if (!bothOffloaded) {
2009        deleteRecycledTrack_l();
2010    }
2011
2012    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
2013
2014    mCallbackData = newcbd;
2015    ALOGV("setVolume");
2016    t->setVolume(mLeftVolume, mRightVolume);
2017
2018    // Restore VolumeShapers for the MediaPlayer in case the track was recreated
2019    // due to an output sink error (e.g. offload to non-offload switch).
2020    mVolumeHandler->forall([&t](const VolumeShaper &shaper) -> VolumeShaper::Status {
2021        sp<VolumeShaper::Operation> operationToEnd =
2022                new VolumeShaper::Operation(shaper.mOperation);
2023        // TODO: Ideally we would restore to the exact xOffset position
2024        // as returned by getVolumeShaperState(), but we don't have that
2025        // information when restoring at the client unless we periodically poll
2026        // the server or create shared memory state.
2027        //
2028        // For now, we simply advance to the end of the VolumeShaper effect
2029        // if it has been started.
2030        if (shaper.isStarted()) {
2031            operationToEnd->setNormalizedTime(1.f);
2032        }
2033        return t->applyVolumeShaper(shaper.mConfiguration, operationToEnd);
2034    });
2035
2036    mSampleRateHz = sampleRate;
2037    mFlags = flags;
2038    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
2039    mFrameSize = t->frameSize();
2040    mTrack = t;
2041
2042    return updateTrack();
2043}
2044
2045status_t MediaPlayerService::AudioOutput::updateTrack() {
2046    if (mTrack == NULL) {
2047        return NO_ERROR;
2048    }
2049
2050    status_t res = NO_ERROR;
2051    // Note some output devices may give us a direct track even though we don't specify it.
2052    // Example: Line application b/17459982.
2053    if ((mTrack->getFlags()
2054            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
2055        res = mTrack->setPlaybackRate(mPlaybackRate);
2056        if (res == NO_ERROR) {
2057            mTrack->setAuxEffectSendLevel(mSendLevel);
2058            res = mTrack->attachAuxEffect(mAuxEffectId);
2059        }
2060    }
2061    ALOGV("updateTrack() DONE status %d", res);
2062    return res;
2063}
2064
2065status_t MediaPlayerService::AudioOutput::start()
2066{
2067    ALOGV("start");
2068    Mutex::Autolock lock(mLock);
2069    if (mCallbackData != NULL) {
2070        mCallbackData->endTrackSwitch();
2071    }
2072    if (mTrack != 0) {
2073        mTrack->setVolume(mLeftVolume, mRightVolume);
2074        mTrack->setAuxEffectSendLevel(mSendLevel);
2075        status_t status = mTrack->start();
2076        if (status == NO_ERROR) {
2077            mVolumeHandler->setStarted();
2078        }
2079        return status;
2080    }
2081    return NO_INIT;
2082}
2083
2084void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
2085    Mutex::Autolock lock(mLock);
2086    mNextOutput = nextOutput;
2087}
2088
2089void MediaPlayerService::AudioOutput::switchToNextOutput() {
2090    ALOGV("switchToNextOutput");
2091
2092    // Try to acquire the callback lock before moving track (without incurring deadlock).
2093    const unsigned kMaxSwitchTries = 100;
2094    Mutex::Autolock lock(mLock);
2095    for (unsigned tries = 0;;) {
2096        if (mTrack == 0) {
2097            return;
2098        }
2099        if (mNextOutput != NULL && mNextOutput != this) {
2100            if (mCallbackData != NULL) {
2101                // two alternative approaches
2102#if 1
2103                CallbackData *callbackData = mCallbackData;
2104                mLock.unlock();
2105                // proper acquisition sequence
2106                callbackData->lock();
2107                mLock.lock();
2108                // Caution: it is unlikely that someone deleted our callback or changed our target
2109                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
2110                    // fatal if we are starved out.
2111                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2112                            "switchToNextOutput() cannot obtain correct lock sequence");
2113                    callbackData->unlock();
2114                    continue;
2115                }
2116                callbackData->mSwitching = true; // begin track switch
2117                callbackData->setOutput(NULL);
2118#else
2119                // tryBeginTrackSwitch() returns false if the callback has the lock.
2120                if (!mCallbackData->tryBeginTrackSwitch()) {
2121                    // fatal if we are starved out.
2122                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2123                            "switchToNextOutput() cannot obtain callback lock");
2124                    mLock.unlock();
2125                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
2126                    mLock.lock();
2127                    continue;
2128                }
2129#endif
2130            }
2131
2132            Mutex::Autolock nextLock(mNextOutput->mLock);
2133
2134            // If the next output track is not NULL, then it has been
2135            // opened already for playback.
2136            // This is possible even without the next player being started,
2137            // for example, the next player could be prepared and seeked.
2138            //
2139            // Presuming it isn't advisable to force the track over.
2140             if (mNextOutput->mTrack == NULL) {
2141                ALOGD("Recycling track for gapless playback");
2142                delete mNextOutput->mCallbackData;
2143                mNextOutput->mCallbackData = mCallbackData;
2144                mNextOutput->mRecycledTrack = mTrack;
2145                mNextOutput->mSampleRateHz = mSampleRateHz;
2146                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
2147                mNextOutput->mFlags = mFlags;
2148                mNextOutput->mFrameSize = mFrameSize;
2149                close_l();
2150                mCallbackData = NULL;  // destruction handled by mNextOutput
2151            } else {
2152                ALOGW("Ignoring gapless playback because next player has already started");
2153                // remove track in case resource needed for future players.
2154                if (mCallbackData != NULL) {
2155                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
2156                }
2157                close_l();
2158            }
2159        }
2160        break;
2161    }
2162}
2163
2164ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
2165{
2166    Mutex::Autolock lock(mLock);
2167    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
2168
2169    //ALOGV("write(%p, %u)", buffer, size);
2170    if (mTrack != 0) {
2171        return mTrack->write(buffer, size, blocking);
2172    }
2173    return NO_INIT;
2174}
2175
2176void MediaPlayerService::AudioOutput::stop()
2177{
2178    ALOGV("stop");
2179    Mutex::Autolock lock(mLock);
2180    if (mTrack != 0) mTrack->stop();
2181}
2182
2183void MediaPlayerService::AudioOutput::flush()
2184{
2185    ALOGV("flush");
2186    Mutex::Autolock lock(mLock);
2187    if (mTrack != 0) mTrack->flush();
2188}
2189
2190void MediaPlayerService::AudioOutput::pause()
2191{
2192    ALOGV("pause");
2193    Mutex::Autolock lock(mLock);
2194    if (mTrack != 0) mTrack->pause();
2195}
2196
2197void MediaPlayerService::AudioOutput::close()
2198{
2199    ALOGV("close");
2200    sp<AudioTrack> track;
2201    {
2202        Mutex::Autolock lock(mLock);
2203        track = mTrack;
2204        close_l(); // clears mTrack
2205    }
2206    // destruction of the track occurs outside of mutex.
2207}
2208
2209void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2210{
2211    ALOGV("setVolume(%f, %f)", left, right);
2212    Mutex::Autolock lock(mLock);
2213    mLeftVolume = left;
2214    mRightVolume = right;
2215    if (mTrack != 0) {
2216        mTrack->setVolume(left, right);
2217    }
2218}
2219
2220status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2221{
2222    ALOGV("setPlaybackRate(%f %f %d %d)",
2223                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2224    Mutex::Autolock lock(mLock);
2225    if (mTrack == 0) {
2226        // remember rate so that we can set it when the track is opened
2227        mPlaybackRate = rate;
2228        return OK;
2229    }
2230    status_t res = mTrack->setPlaybackRate(rate);
2231    if (res != NO_ERROR) {
2232        return res;
2233    }
2234    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2235    CHECK_GT(rate.mSpeed, 0.f);
2236    mPlaybackRate = rate;
2237    if (mSampleRateHz != 0) {
2238        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2239    }
2240    return res;
2241}
2242
2243status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2244{
2245    ALOGV("setPlaybackRate");
2246    Mutex::Autolock lock(mLock);
2247    if (mTrack == 0) {
2248        return NO_INIT;
2249    }
2250    *rate = mTrack->getPlaybackRate();
2251    return NO_ERROR;
2252}
2253
2254status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2255{
2256    ALOGV("setAuxEffectSendLevel(%f)", level);
2257    Mutex::Autolock lock(mLock);
2258    mSendLevel = level;
2259    if (mTrack != 0) {
2260        return mTrack->setAuxEffectSendLevel(level);
2261    }
2262    return NO_ERROR;
2263}
2264
2265status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2266{
2267    ALOGV("attachAuxEffect(%d)", effectId);
2268    Mutex::Autolock lock(mLock);
2269    mAuxEffectId = effectId;
2270    if (mTrack != 0) {
2271        return mTrack->attachAuxEffect(effectId);
2272    }
2273    return NO_ERROR;
2274}
2275
2276VolumeShaper::Status MediaPlayerService::AudioOutput::applyVolumeShaper(
2277                const sp<VolumeShaper::Configuration>& configuration,
2278                const sp<VolumeShaper::Operation>& operation)
2279{
2280    Mutex::Autolock lock(mLock);
2281    ALOGV("AudioOutput::applyVolumeShaper");
2282
2283    mVolumeHandler->setIdIfNecessary(configuration);
2284
2285    VolumeShaper::Status status;
2286    if (mTrack != 0) {
2287        status = mTrack->applyVolumeShaper(configuration, operation);
2288        if (status >= 0) {
2289            (void)mVolumeHandler->applyVolumeShaper(configuration, operation);
2290            if (mTrack->isPlaying()) { // match local AudioTrack to properly restore.
2291                mVolumeHandler->setStarted();
2292            }
2293        }
2294    } else {
2295        status = mVolumeHandler->applyVolumeShaper(configuration, operation);
2296    }
2297    return status;
2298}
2299
2300sp<VolumeShaper::State> MediaPlayerService::AudioOutput::getVolumeShaperState(int id)
2301{
2302    Mutex::Autolock lock(mLock);
2303    if (mTrack != 0) {
2304        return mTrack->getVolumeShaperState(id);
2305    } else {
2306        return mVolumeHandler->getVolumeShaperState(id);
2307    }
2308}
2309
2310// static
2311void MediaPlayerService::AudioOutput::CallbackWrapper(
2312        int event, void *cookie, void *info) {
2313    //ALOGV("callbackwrapper");
2314    CallbackData *data = (CallbackData*)cookie;
2315    // lock to ensure we aren't caught in the middle of a track switch.
2316    data->lock();
2317    AudioOutput *me = data->getOutput();
2318    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2319    if (me == NULL) {
2320        // no output set, likely because the track was scheduled to be reused
2321        // by another player, but the format turned out to be incompatible.
2322        data->unlock();
2323        if (buffer != NULL) {
2324            buffer->size = 0;
2325        }
2326        return;
2327    }
2328
2329    switch(event) {
2330    case AudioTrack::EVENT_MORE_DATA: {
2331        size_t actualSize = (*me->mCallback)(
2332                me, buffer->raw, buffer->size, me->mCallbackCookie,
2333                CB_EVENT_FILL_BUFFER);
2334
2335        // Log when no data is returned from the callback.
2336        // (1) We may have no data (especially with network streaming sources).
2337        // (2) We may have reached the EOS and the audio track is not stopped yet.
2338        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2339        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2340        //
2341        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2342        // nevertheless for power reasons, we don't want to see too many of these.
2343
2344        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2345
2346        buffer->size = actualSize;
2347        } break;
2348
2349    case AudioTrack::EVENT_STREAM_END:
2350        // currently only occurs for offloaded callbacks
2351        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2352        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2353                me->mCallbackCookie, CB_EVENT_STREAM_END);
2354        break;
2355
2356    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2357        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2358        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2359                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2360        break;
2361
2362    case AudioTrack::EVENT_UNDERRUN:
2363        // This occurs when there is no data available, typically
2364        // when there is a failure to supply data to the AudioTrack.  It can also
2365        // occur in non-offloaded mode when the audio device comes out of standby.
2366        //
2367        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2368        // it may sound like an audible pop or glitch.
2369        //
2370        // The underrun event is sent once per track underrun; the condition is reset
2371        // when more data is sent to the AudioTrack.
2372        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2373        break;
2374
2375    default:
2376        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2377    }
2378
2379    data->unlock();
2380}
2381
2382audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2383{
2384    Mutex::Autolock lock(mLock);
2385    return mSessionId;
2386}
2387
2388uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2389{
2390    Mutex::Autolock lock(mLock);
2391    if (mTrack == 0) return 0;
2392    return mTrack->getSampleRate();
2393}
2394
2395int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2396{
2397    Mutex::Autolock lock(mLock);
2398    if (mTrack == 0) {
2399        return 0;
2400    }
2401    int64_t duration;
2402    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2403        return 0;
2404    }
2405    return duration;
2406}
2407
2408////////////////////////////////////////////////////////////////////////////////
2409
2410struct CallbackThread : public Thread {
2411    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2412                   MediaPlayerBase::AudioSink::AudioCallback cb,
2413                   void *cookie);
2414
2415protected:
2416    virtual ~CallbackThread();
2417
2418    virtual bool threadLoop();
2419
2420private:
2421    wp<MediaPlayerBase::AudioSink> mSink;
2422    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2423    void *mCookie;
2424    void *mBuffer;
2425    size_t mBufferSize;
2426
2427    CallbackThread(const CallbackThread &);
2428    CallbackThread &operator=(const CallbackThread &);
2429};
2430
2431CallbackThread::CallbackThread(
2432        const wp<MediaPlayerBase::AudioSink> &sink,
2433        MediaPlayerBase::AudioSink::AudioCallback cb,
2434        void *cookie)
2435    : mSink(sink),
2436      mCallback(cb),
2437      mCookie(cookie),
2438      mBuffer(NULL),
2439      mBufferSize(0) {
2440}
2441
2442CallbackThread::~CallbackThread() {
2443    if (mBuffer) {
2444        free(mBuffer);
2445        mBuffer = NULL;
2446    }
2447}
2448
2449bool CallbackThread::threadLoop() {
2450    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2451    if (sink == NULL) {
2452        return false;
2453    }
2454
2455    if (mBuffer == NULL) {
2456        mBufferSize = sink->bufferSize();
2457        mBuffer = malloc(mBufferSize);
2458    }
2459
2460    size_t actualSize =
2461        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2462                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2463
2464    if (actualSize > 0) {
2465        sink->write(mBuffer, actualSize);
2466        // Could return false on sink->write() error or short count.
2467        // Not necessarily appropriate but would work for AudioCache behavior.
2468    }
2469
2470    return true;
2471}
2472
2473////////////////////////////////////////////////////////////////////////////////
2474
2475void MediaPlayerService::addBatteryData(uint32_t params) {
2476    mBatteryTracker.addBatteryData(params);
2477}
2478
2479status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2480    return mBatteryTracker.pullBatteryData(reply);
2481}
2482
2483MediaPlayerService::BatteryTracker::BatteryTracker() {
2484    mBatteryAudio.refCount = 0;
2485    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2486        mBatteryAudio.deviceOn[i] = 0;
2487        mBatteryAudio.lastTime[i] = 0;
2488        mBatteryAudio.totalTime[i] = 0;
2489    }
2490    // speaker is on by default
2491    mBatteryAudio.deviceOn[SPEAKER] = 1;
2492
2493    // reset battery stats
2494    // if the mediaserver has crashed, battery stats could be left
2495    // in bad state, reset the state upon service start.
2496    BatteryNotifier::getInstance().noteResetVideo();
2497}
2498
2499void MediaPlayerService::BatteryTracker::addBatteryData(uint32_t params)
2500{
2501    Mutex::Autolock lock(mLock);
2502
2503    int32_t time = systemTime() / 1000000L;
2504
2505    // change audio output devices. This notification comes from AudioFlinger
2506    if ((params & kBatteryDataSpeakerOn)
2507            || (params & kBatteryDataOtherAudioDeviceOn)) {
2508
2509        int deviceOn[NUM_AUDIO_DEVICES];
2510        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2511            deviceOn[i] = 0;
2512        }
2513
2514        if ((params & kBatteryDataSpeakerOn)
2515                && (params & kBatteryDataOtherAudioDeviceOn)) {
2516            deviceOn[SPEAKER_AND_OTHER] = 1;
2517        } else if (params & kBatteryDataSpeakerOn) {
2518            deviceOn[SPEAKER] = 1;
2519        } else {
2520            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2521        }
2522
2523        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2524            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2525
2526                if (mBatteryAudio.refCount > 0) { // if playing audio
2527                    if (!deviceOn[i]) {
2528                        mBatteryAudio.lastTime[i] += time;
2529                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2530                        mBatteryAudio.lastTime[i] = 0;
2531                    } else {
2532                        mBatteryAudio.lastTime[i] = 0 - time;
2533                    }
2534                }
2535
2536                mBatteryAudio.deviceOn[i] = deviceOn[i];
2537            }
2538        }
2539        return;
2540    }
2541
2542    // an audio stream is started
2543    if (params & kBatteryDataAudioFlingerStart) {
2544        // record the start time only if currently no other audio
2545        // is being played
2546        if (mBatteryAudio.refCount == 0) {
2547            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2548                if (mBatteryAudio.deviceOn[i]) {
2549                    mBatteryAudio.lastTime[i] -= time;
2550                }
2551            }
2552        }
2553
2554        mBatteryAudio.refCount ++;
2555        return;
2556
2557    } else if (params & kBatteryDataAudioFlingerStop) {
2558        if (mBatteryAudio.refCount <= 0) {
2559            ALOGW("Battery track warning: refCount is <= 0");
2560            return;
2561        }
2562
2563        // record the stop time only if currently this is the only
2564        // audio being played
2565        if (mBatteryAudio.refCount == 1) {
2566            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2567                if (mBatteryAudio.deviceOn[i]) {
2568                    mBatteryAudio.lastTime[i] += time;
2569                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2570                    mBatteryAudio.lastTime[i] = 0;
2571                }
2572            }
2573        }
2574
2575        mBatteryAudio.refCount --;
2576        return;
2577    }
2578
2579    uid_t uid = IPCThreadState::self()->getCallingUid();
2580    if (uid == AID_MEDIA) {
2581        return;
2582    }
2583    int index = mBatteryData.indexOfKey(uid);
2584
2585    if (index < 0) { // create a new entry for this UID
2586        BatteryUsageInfo info;
2587        info.audioTotalTime = 0;
2588        info.videoTotalTime = 0;
2589        info.audioLastTime = 0;
2590        info.videoLastTime = 0;
2591        info.refCount = 0;
2592
2593        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2594            ALOGE("Battery track error: no memory for new app");
2595            return;
2596        }
2597    }
2598
2599    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2600
2601    if (params & kBatteryDataCodecStarted) {
2602        if (params & kBatteryDataTrackAudio) {
2603            info.audioLastTime -= time;
2604            info.refCount ++;
2605        }
2606        if (params & kBatteryDataTrackVideo) {
2607            info.videoLastTime -= time;
2608            info.refCount ++;
2609        }
2610    } else {
2611        if (info.refCount == 0) {
2612            ALOGW("Battery track warning: refCount is already 0");
2613            return;
2614        } else if (info.refCount < 0) {
2615            ALOGE("Battery track error: refCount < 0");
2616            mBatteryData.removeItem(uid);
2617            return;
2618        }
2619
2620        if (params & kBatteryDataTrackAudio) {
2621            info.audioLastTime += time;
2622            info.refCount --;
2623        }
2624        if (params & kBatteryDataTrackVideo) {
2625            info.videoLastTime += time;
2626            info.refCount --;
2627        }
2628
2629        // no stream is being played by this UID
2630        if (info.refCount == 0) {
2631            info.audioTotalTime += info.audioLastTime;
2632            info.audioLastTime = 0;
2633            info.videoTotalTime += info.videoLastTime;
2634            info.videoLastTime = 0;
2635        }
2636    }
2637}
2638
2639status_t MediaPlayerService::BatteryTracker::pullBatteryData(Parcel* reply) {
2640    Mutex::Autolock lock(mLock);
2641
2642    // audio output devices usage
2643    int32_t time = systemTime() / 1000000L; //in ms
2644    int32_t totalTime;
2645
2646    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2647        totalTime = mBatteryAudio.totalTime[i];
2648
2649        if (mBatteryAudio.deviceOn[i]
2650            && (mBatteryAudio.lastTime[i] != 0)) {
2651                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2652                totalTime += tmpTime;
2653        }
2654
2655        reply->writeInt32(totalTime);
2656        // reset the total time
2657        mBatteryAudio.totalTime[i] = 0;
2658   }
2659
2660    // codec usage
2661    BatteryUsageInfo info;
2662    int size = mBatteryData.size();
2663
2664    reply->writeInt32(size);
2665    int i = 0;
2666
2667    while (i < size) {
2668        info = mBatteryData.valueAt(i);
2669
2670        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2671        reply->writeInt32(info.audioTotalTime);
2672        reply->writeInt32(info.videoTotalTime);
2673
2674        info.audioTotalTime = 0;
2675        info.videoTotalTime = 0;
2676
2677        // remove the UID entry where no stream is being played
2678        if (info.refCount <= 0) {
2679            mBatteryData.removeItemsAt(i);
2680            size --;
2681            i --;
2682        }
2683        i++;
2684    }
2685    return NO_ERROR;
2686}
2687} // namespace android
2688