MediaPlayerService.cpp revision 4f12d94fc26df1d0c7a566792711b8863fd39fe9 
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/AudioPlayer.h>
61#include <media/stagefright/Utils.h>
62#include <media/stagefright/foundation/ADebug.h>
63#include <media/stagefright/foundation/ALooperRoster.h>
64#include <mediautils/BatteryNotifier.h>
65
66#include <system/audio.h>
67
68#include <private/android_filesystem_config.h>
69
70#include "ActivityManager.h"
71#include "MediaRecorderClient.h"
72#include "MediaPlayerService.h"
73#include "MetadataRetrieverClient.h"
74#include "MediaPlayerFactory.h"
75
76#include "TestPlayerStub.h"
77#include "StagefrightPlayer.h"
78#include "nuplayer/NuPlayerDriver.h"
79
80#include <OMX.h>
81
82#include "Crypto.h"
83#include "Drm.h"
84#include "HDCP.h"
85#include "HTTPBase.h"
86#include "RemoteDisplay.h"
87
88namespace {
89using android::media::Metadata;
90using android::status_t;
91using android::OK;
92using android::BAD_VALUE;
93using android::NOT_ENOUGH_DATA;
94using android::Parcel;
95
96// Max number of entries in the filter.
97const int kMaxFilterSize = 64;  // I pulled that out of thin air.
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 %d but got %d", 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        }
243    } else {
244        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
245        strcpy(attributes->tags, "");
246    }
247}
248} // anonymous namespace
249
250
251namespace android {
252
253extern ALooperRoster gLooperRoster;
254
255
256static bool checkPermission(const char* permissionString) {
257    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
258    bool ok = checkCallingPermission(String16(permissionString));
259    if (!ok) ALOGE("Request requires %s", permissionString);
260    return ok;
261}
262
263// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
264/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
265/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
266
267void MediaPlayerService::instantiate() {
268    defaultServiceManager()->addService(
269            String16("media.player"), new MediaPlayerService());
270}
271
272MediaPlayerService::MediaPlayerService()
273{
274    ALOGV("MediaPlayerService created");
275    mNextConnId = 1;
276
277    mBatteryAudio.refCount = 0;
278    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
279        mBatteryAudio.deviceOn[i] = 0;
280        mBatteryAudio.lastTime[i] = 0;
281        mBatteryAudio.totalTime[i] = 0;
282    }
283    // speaker is on by default
284    mBatteryAudio.deviceOn[SPEAKER] = 1;
285
286    // reset battery stats
287    // if the mediaserver has crashed, battery stats could be left
288    // in bad state, reset the state upon service start.
289    BatteryNotifier::getInstance().noteResetVideo();
290
291    MediaPlayerFactory::registerBuiltinFactories();
292}
293
294MediaPlayerService::~MediaPlayerService()
295{
296    ALOGV("MediaPlayerService destroyed");
297}
298
299sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
300{
301    pid_t pid = IPCThreadState::self()->getCallingPid();
302    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
303    wp<MediaRecorderClient> w = recorder;
304    Mutex::Autolock lock(mLock);
305    mMediaRecorderClients.add(w);
306    ALOGV("Create new media recorder client from pid %d", pid);
307    return recorder;
308}
309
310void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
311{
312    Mutex::Autolock lock(mLock);
313    mMediaRecorderClients.remove(client);
314    ALOGV("Delete media recorder client");
315}
316
317sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
318{
319    pid_t pid = IPCThreadState::self()->getCallingPid();
320    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
321    ALOGV("Create new media retriever from pid %d", pid);
322    return retriever;
323}
324
325sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
326        int audioSessionId)
327{
328    pid_t pid = IPCThreadState::self()->getCallingPid();
329    int32_t connId = android_atomic_inc(&mNextConnId);
330
331    sp<Client> c = new Client(
332            this, pid, connId, client, audioSessionId,
333            IPCThreadState::self()->getCallingUid());
334
335    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
336         IPCThreadState::self()->getCallingUid());
337
338    wp<Client> w = c;
339    {
340        Mutex::Autolock lock(mLock);
341        mClients.add(w);
342    }
343    return c;
344}
345
346sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
347    return MediaCodecList::getLocalInstance();
348}
349
350sp<ICrypto> MediaPlayerService::makeCrypto() {
351    return new Crypto;
352}
353
354sp<IDrm> MediaPlayerService::makeDrm() {
355    return new Drm;
356}
357
358sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
359    return new HDCP(createEncryptionModule);
360}
361
362sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
363        const String16 &opPackageName,
364        const sp<IRemoteDisplayClient>& client, const String8& iface) {
365    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
366        return NULL;
367    }
368
369    return new RemoteDisplay(opPackageName, client, iface.string());
370}
371
372status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
373{
374    const size_t SIZE = 256;
375    char buffer[SIZE];
376    String8 result;
377
378    result.append(" AudioOutput\n");
379    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
380            mStreamType, mLeftVolume, mRightVolume);
381    result.append(buffer);
382    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
383            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
384    result.append(buffer);
385    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
386            mAuxEffectId, mSendLevel);
387    result.append(buffer);
388
389    ::write(fd, result.string(), result.size());
390    if (mTrack != 0) {
391        mTrack->dump(fd, args);
392    }
393    return NO_ERROR;
394}
395
396status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
397{
398    const size_t SIZE = 256;
399    char buffer[SIZE];
400    String8 result;
401    result.append(" Client\n");
402    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
403            mPid, mConnId, mStatus, mLoop?"true": "false");
404    result.append(buffer);
405    write(fd, result.string(), result.size());
406    if (mPlayer != NULL) {
407        mPlayer->dump(fd, args);
408    }
409    if (mAudioOutput != 0) {
410        mAudioOutput->dump(fd, args);
411    }
412    write(fd, "\n", 1);
413    return NO_ERROR;
414}
415
416/**
417 * The only arguments this understands right now are -c, -von and -voff,
418 * which are parsed by ALooperRoster::dump()
419 */
420status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
421{
422    const size_t SIZE = 256;
423    char buffer[SIZE];
424    String8 result;
425    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
426    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
427
428    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
429        snprintf(buffer, SIZE, "Permission Denial: "
430                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
431                IPCThreadState::self()->getCallingPid(),
432                IPCThreadState::self()->getCallingUid());
433        result.append(buffer);
434    } else {
435        Mutex::Autolock lock(mLock);
436        for (int i = 0, n = mClients.size(); i < n; ++i) {
437            sp<Client> c = mClients[i].promote();
438            if (c != 0) c->dump(fd, args);
439            clients.add(c);
440        }
441        if (mMediaRecorderClients.size() == 0) {
442                result.append(" No media recorder client\n\n");
443        } else {
444            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
445                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
446                if (c != 0) {
447                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
448                    result.append(buffer);
449                    write(fd, result.string(), result.size());
450                    result = "\n";
451                    c->dump(fd, args);
452                    mediaRecorderClients.add(c);
453                }
454            }
455        }
456
457        result.append(" Files opened and/or mapped:\n");
458        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
459        FILE *f = fopen(buffer, "r");
460        if (f) {
461            while (!feof(f)) {
462                fgets(buffer, SIZE, f);
463                if (strstr(buffer, " /storage/") ||
464                    strstr(buffer, " /system/sounds/") ||
465                    strstr(buffer, " /data/") ||
466                    strstr(buffer, " /system/media/")) {
467                    result.append("  ");
468                    result.append(buffer);
469                }
470            }
471            fclose(f);
472        } else {
473            result.append("couldn't open ");
474            result.append(buffer);
475            result.append("\n");
476        }
477
478        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
479        DIR *d = opendir(buffer);
480        if (d) {
481            struct dirent *ent;
482            while((ent = readdir(d)) != NULL) {
483                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
484                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
485                    struct stat s;
486                    if (lstat(buffer, &s) == 0) {
487                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
488                            char linkto[256];
489                            int len = readlink(buffer, linkto, sizeof(linkto));
490                            if(len > 0) {
491                                if(len > 255) {
492                                    linkto[252] = '.';
493                                    linkto[253] = '.';
494                                    linkto[254] = '.';
495                                    linkto[255] = 0;
496                                } else {
497                                    linkto[len] = 0;
498                                }
499                                if (strstr(linkto, "/storage/") == linkto ||
500                                    strstr(linkto, "/system/sounds/") == linkto ||
501                                    strstr(linkto, "/data/") == linkto ||
502                                    strstr(linkto, "/system/media/") == linkto) {
503                                    result.append("  ");
504                                    result.append(buffer);
505                                    result.append(" -> ");
506                                    result.append(linkto);
507                                    result.append("\n");
508                                }
509                            }
510                        } else {
511                            result.append("  unexpected type for ");
512                            result.append(buffer);
513                            result.append("\n");
514                        }
515                    }
516                }
517            }
518            closedir(d);
519        } else {
520            result.append("couldn't open ");
521            result.append(buffer);
522            result.append("\n");
523        }
524
525        gLooperRoster.dump(fd, args);
526
527        bool dumpMem = false;
528        for (size_t i = 0; i < args.size(); i++) {
529            if (args[i] == String16("-m")) {
530                dumpMem = true;
531            }
532        }
533        if (dumpMem) {
534            dumpMemoryAddresses(fd);
535        }
536    }
537    write(fd, result.string(), result.size());
538    return NO_ERROR;
539}
540
541void MediaPlayerService::removeClient(wp<Client> client)
542{
543    Mutex::Autolock lock(mLock);
544    mClients.remove(client);
545}
546
547MediaPlayerService::Client::Client(
548        const sp<MediaPlayerService>& service, pid_t pid,
549        int32_t connId, const sp<IMediaPlayerClient>& client,
550        int audioSessionId, uid_t uid)
551{
552    ALOGV("Client(%d) constructor", connId);
553    mPid = pid;
554    mConnId = connId;
555    mService = service;
556    mClient = client;
557    mLoop = false;
558    mStatus = NO_INIT;
559    mAudioSessionId = audioSessionId;
560    mUID = uid;
561    mRetransmitEndpointValid = false;
562    mAudioAttributes = NULL;
563
564#if CALLBACK_ANTAGONIZER
565    ALOGD("create Antagonizer");
566    mAntagonizer = new Antagonizer(notify, this);
567#endif
568}
569
570MediaPlayerService::Client::~Client()
571{
572    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
573    mAudioOutput.clear();
574    wp<Client> client(this);
575    disconnect();
576    mService->removeClient(client);
577    if (mAudioAttributes != NULL) {
578        free(mAudioAttributes);
579    }
580}
581
582void MediaPlayerService::Client::disconnect()
583{
584    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
585    // grab local reference and clear main reference to prevent future
586    // access to object
587    sp<MediaPlayerBase> p;
588    {
589        Mutex::Autolock l(mLock);
590        p = mPlayer;
591        mClient.clear();
592    }
593
594    mPlayer.clear();
595
596    // clear the notification to prevent callbacks to dead client
597    // and reset the player. We assume the player will serialize
598    // access to itself if necessary.
599    if (p != 0) {
600        p->setNotifyCallback(0, 0);
601#if CALLBACK_ANTAGONIZER
602        ALOGD("kill Antagonizer");
603        mAntagonizer->kill();
604#endif
605        p->reset();
606    }
607
608    disconnectNativeWindow();
609
610    IPCThreadState::self()->flushCommands();
611}
612
613sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
614{
615    // determine if we have the right player type
616    sp<MediaPlayerBase> p = mPlayer;
617    if ((p != NULL) && (p->playerType() != playerType)) {
618        ALOGV("delete player");
619        p.clear();
620    }
621    if (p == NULL) {
622        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
623    }
624
625    if (p != NULL) {
626        p->setUID(mUID);
627    }
628
629    return p;
630}
631
632sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
633        player_type playerType)
634{
635    ALOGV("player type = %d", playerType);
636
637    // create the right type of player
638    sp<MediaPlayerBase> p = createPlayer(playerType);
639    if (p == NULL) {
640        return p;
641    }
642
643    if (!p->hardwareOutput()) {
644        Mutex::Autolock l(mLock);
645        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
646                mPid, mAudioAttributes);
647        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
648    }
649
650    return p;
651}
652
653void MediaPlayerService::Client::setDataSource_post(
654        const sp<MediaPlayerBase>& p,
655        status_t status)
656{
657    ALOGV(" setDataSource");
658    mStatus = status;
659    if (mStatus != OK) {
660        ALOGE("  error: %d", mStatus);
661        return;
662    }
663
664    // Set the re-transmission endpoint if one was chosen.
665    if (mRetransmitEndpointValid) {
666        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
667        if (mStatus != NO_ERROR) {
668            ALOGE("setRetransmitEndpoint error: %d", mStatus);
669        }
670    }
671
672    if (mStatus == OK) {
673        mPlayer = p;
674    }
675}
676
677status_t MediaPlayerService::Client::setDataSource(
678        const sp<IMediaHTTPService> &httpService,
679        const char *url,
680        const KeyedVector<String8, String8> *headers)
681{
682    ALOGV("setDataSource(%s)", url);
683    if (url == NULL)
684        return UNKNOWN_ERROR;
685
686    if ((strncmp(url, "http://", 7) == 0) ||
687        (strncmp(url, "https://", 8) == 0) ||
688        (strncmp(url, "rtsp://", 7) == 0)) {
689        if (!checkPermission("android.permission.INTERNET")) {
690            return PERMISSION_DENIED;
691        }
692    }
693
694    if (strncmp(url, "content://", 10) == 0) {
695        // get a filedescriptor for the content Uri and
696        // pass it to the setDataSource(fd) method
697
698        String16 url16(url);
699        int fd = android::openContentProviderFile(url16);
700        if (fd < 0)
701        {
702            ALOGE("Couldn't open fd for %s", url);
703            return UNKNOWN_ERROR;
704        }
705        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
706        close(fd);
707        return mStatus;
708    } else {
709        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
710        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
711        if (p == NULL) {
712            return NO_INIT;
713        }
714
715        setDataSource_post(p, p->setDataSource(httpService, url, headers));
716        return mStatus;
717    }
718}
719
720status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
721{
722    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
723            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
724    struct stat sb;
725    int ret = fstat(fd, &sb);
726    if (ret != 0) {
727        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
728        return UNKNOWN_ERROR;
729    }
730
731    ALOGV("st_dev  = %llu", static_cast<uint64_t>(sb.st_dev));
732    ALOGV("st_mode = %u", sb.st_mode);
733    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
734    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
735    ALOGV("st_size = %llu", sb.st_size);
736
737    if (offset >= sb.st_size) {
738        ALOGE("offset error");
739        return UNKNOWN_ERROR;
740    }
741    if (offset + length > sb.st_size) {
742        length = sb.st_size - offset;
743        ALOGV("calculated length = %lld", length);
744    }
745
746    player_type playerType = MediaPlayerFactory::getPlayerType(this,
747                                                               fd,
748                                                               offset,
749                                                               length);
750    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
751    if (p == NULL) {
752        return NO_INIT;
753    }
754
755    // now set data source
756    setDataSource_post(p, p->setDataSource(fd, offset, length));
757    return mStatus;
758}
759
760status_t MediaPlayerService::Client::setDataSource(
761        const sp<IStreamSource> &source) {
762    // create the right type of player
763    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
764    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
765    if (p == NULL) {
766        return NO_INIT;
767    }
768
769    // now set data source
770    setDataSource_post(p, p->setDataSource(source));
771    return mStatus;
772}
773
774status_t MediaPlayerService::Client::setDataSource(
775        const sp<IDataSource> &source) {
776    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
777    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
778    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
779    if (p == NULL) {
780        return NO_INIT;
781    }
782    // now set data source
783    setDataSource_post(p, p->setDataSource(dataSource));
784    return mStatus;
785}
786
787void MediaPlayerService::Client::disconnectNativeWindow() {
788    if (mConnectedWindow != NULL) {
789        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
790                NATIVE_WINDOW_API_MEDIA);
791
792        if (err != OK) {
793            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
794                    strerror(-err), err);
795        }
796    }
797    mConnectedWindow.clear();
798}
799
800status_t MediaPlayerService::Client::setVideoSurfaceTexture(
801        const sp<IGraphicBufferProducer>& bufferProducer)
802{
803    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
804    sp<MediaPlayerBase> p = getPlayer();
805    if (p == 0) return UNKNOWN_ERROR;
806
807    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
808    if (mConnectedWindowBinder == binder) {
809        return OK;
810    }
811
812    sp<ANativeWindow> anw;
813    if (bufferProducer != NULL) {
814        anw = new Surface(bufferProducer, true /* controlledByApp */);
815        status_t err = native_window_api_connect(anw.get(),
816                NATIVE_WINDOW_API_MEDIA);
817
818        if (err != OK) {
819            ALOGE("setVideoSurfaceTexture failed: %d", err);
820            // Note that we must do the reset before disconnecting from the ANW.
821            // Otherwise queue/dequeue calls could be made on the disconnected
822            // ANW, which may result in errors.
823            reset();
824
825            disconnectNativeWindow();
826
827            return err;
828        }
829    }
830
831    // Note that we must set the player's new GraphicBufferProducer before
832    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
833    // on the disconnected ANW, which may result in errors.
834    status_t err = p->setVideoSurfaceTexture(bufferProducer);
835
836    disconnectNativeWindow();
837
838    mConnectedWindow = anw;
839
840    if (err == OK) {
841        mConnectedWindowBinder = binder;
842    } else {
843        disconnectNativeWindow();
844    }
845
846    return err;
847}
848
849status_t MediaPlayerService::Client::invoke(const Parcel& request,
850                                            Parcel *reply)
851{
852    sp<MediaPlayerBase> p = getPlayer();
853    if (p == NULL) return UNKNOWN_ERROR;
854    return p->invoke(request, reply);
855}
856
857// This call doesn't need to access the native player.
858status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
859{
860    status_t status;
861    media::Metadata::Filter allow, drop;
862
863    if (unmarshallFilter(filter, &allow, &status) &&
864        unmarshallFilter(filter, &drop, &status)) {
865        Mutex::Autolock lock(mLock);
866
867        mMetadataAllow = allow;
868        mMetadataDrop = drop;
869    }
870    return status;
871}
872
873status_t MediaPlayerService::Client::getMetadata(
874        bool update_only, bool /*apply_filter*/, Parcel *reply)
875{
876    sp<MediaPlayerBase> player = getPlayer();
877    if (player == 0) return UNKNOWN_ERROR;
878
879    status_t status;
880    // Placeholder for the return code, updated by the caller.
881    reply->writeInt32(-1);
882
883    media::Metadata::Filter ids;
884
885    // We don't block notifications while we fetch the data. We clear
886    // mMetadataUpdated first so we don't lose notifications happening
887    // during the rest of this call.
888    {
889        Mutex::Autolock lock(mLock);
890        if (update_only) {
891            ids = mMetadataUpdated;
892        }
893        mMetadataUpdated.clear();
894    }
895
896    media::Metadata metadata(reply);
897
898    metadata.appendHeader();
899    status = player->getMetadata(ids, reply);
900
901    if (status != OK) {
902        metadata.resetParcel();
903        ALOGE("getMetadata failed %d", status);
904        return status;
905    }
906
907    // FIXME: Implement filtering on the result. Not critical since
908    // filtering takes place on the update notifications already. This
909    // would be when all the metadata are fetch and a filter is set.
910
911    // Everything is fine, update the metadata length.
912    metadata.updateLength();
913    return OK;
914}
915
916status_t MediaPlayerService::Client::prepareAsync()
917{
918    ALOGV("[%d] prepareAsync", mConnId);
919    sp<MediaPlayerBase> p = getPlayer();
920    if (p == 0) return UNKNOWN_ERROR;
921    status_t ret = p->prepareAsync();
922#if CALLBACK_ANTAGONIZER
923    ALOGD("start Antagonizer");
924    if (ret == NO_ERROR) mAntagonizer->start();
925#endif
926    return ret;
927}
928
929status_t MediaPlayerService::Client::start()
930{
931    ALOGV("[%d] start", mConnId);
932    sp<MediaPlayerBase> p = getPlayer();
933    if (p == 0) return UNKNOWN_ERROR;
934    p->setLooping(mLoop);
935    return p->start();
936}
937
938status_t MediaPlayerService::Client::stop()
939{
940    ALOGV("[%d] stop", mConnId);
941    sp<MediaPlayerBase> p = getPlayer();
942    if (p == 0) return UNKNOWN_ERROR;
943    return p->stop();
944}
945
946status_t MediaPlayerService::Client::pause()
947{
948    ALOGV("[%d] pause", mConnId);
949    sp<MediaPlayerBase> p = getPlayer();
950    if (p == 0) return UNKNOWN_ERROR;
951    return p->pause();
952}
953
954status_t MediaPlayerService::Client::isPlaying(bool* state)
955{
956    *state = false;
957    sp<MediaPlayerBase> p = getPlayer();
958    if (p == 0) return UNKNOWN_ERROR;
959    *state = p->isPlaying();
960    ALOGV("[%d] isPlaying: %d", mConnId, *state);
961    return NO_ERROR;
962}
963
964status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
965{
966    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
967            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
968    sp<MediaPlayerBase> p = getPlayer();
969    if (p == 0) return UNKNOWN_ERROR;
970    return p->setPlaybackSettings(rate);
971}
972
973status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
974{
975    sp<MediaPlayerBase> p = getPlayer();
976    if (p == 0) return UNKNOWN_ERROR;
977    status_t ret = p->getPlaybackSettings(rate);
978    if (ret == NO_ERROR) {
979        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
980                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
981    } else {
982        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
983    }
984    return ret;
985}
986
987status_t MediaPlayerService::Client::setSyncSettings(
988        const AVSyncSettings& sync, float videoFpsHint)
989{
990    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
991            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
992    sp<MediaPlayerBase> p = getPlayer();
993    if (p == 0) return UNKNOWN_ERROR;
994    return p->setSyncSettings(sync, videoFpsHint);
995}
996
997status_t MediaPlayerService::Client::getSyncSettings(
998        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
999{
1000    sp<MediaPlayerBase> p = getPlayer();
1001    if (p == 0) return UNKNOWN_ERROR;
1002    status_t ret = p->getSyncSettings(sync, videoFps);
1003    if (ret == NO_ERROR) {
1004        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1005                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1006    } else {
1007        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1008    }
1009    return ret;
1010}
1011
1012status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1013{
1014    ALOGV("getCurrentPosition");
1015    sp<MediaPlayerBase> p = getPlayer();
1016    if (p == 0) return UNKNOWN_ERROR;
1017    status_t ret = p->getCurrentPosition(msec);
1018    if (ret == NO_ERROR) {
1019        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1020    } else {
1021        ALOGE("getCurrentPosition returned %d", ret);
1022    }
1023    return ret;
1024}
1025
1026status_t MediaPlayerService::Client::getDuration(int *msec)
1027{
1028    ALOGV("getDuration");
1029    sp<MediaPlayerBase> p = getPlayer();
1030    if (p == 0) return UNKNOWN_ERROR;
1031    status_t ret = p->getDuration(msec);
1032    if (ret == NO_ERROR) {
1033        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1034    } else {
1035        ALOGE("getDuration returned %d", ret);
1036    }
1037    return ret;
1038}
1039
1040status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1041    ALOGV("setNextPlayer");
1042    Mutex::Autolock l(mLock);
1043    sp<Client> c = static_cast<Client*>(player.get());
1044    mNextClient = c;
1045
1046    if (c != NULL) {
1047        if (mAudioOutput != NULL) {
1048            mAudioOutput->setNextOutput(c->mAudioOutput);
1049        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1050            ALOGE("no current audio output");
1051        }
1052
1053        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1054            mPlayer->setNextPlayer(mNextClient->getPlayer());
1055        }
1056    }
1057
1058    return OK;
1059}
1060
1061status_t MediaPlayerService::Client::seekTo(int msec)
1062{
1063    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1064    sp<MediaPlayerBase> p = getPlayer();
1065    if (p == 0) return UNKNOWN_ERROR;
1066    return p->seekTo(msec);
1067}
1068
1069status_t MediaPlayerService::Client::reset()
1070{
1071    ALOGV("[%d] reset", mConnId);
1072    mRetransmitEndpointValid = false;
1073    sp<MediaPlayerBase> p = getPlayer();
1074    if (p == 0) return UNKNOWN_ERROR;
1075    return p->reset();
1076}
1077
1078status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1079{
1080    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1081    // TODO: for hardware output, call player instead
1082    Mutex::Autolock l(mLock);
1083    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1084    return NO_ERROR;
1085}
1086
1087status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1088{
1089    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1090    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1091    if (mAudioAttributes == NULL) {
1092        return NO_MEMORY;
1093    }
1094    unmarshallAudioAttributes(parcel, mAudioAttributes);
1095
1096    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1097            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1098            mAudioAttributes->tags);
1099
1100    if (mAudioOutput != 0) {
1101        mAudioOutput->setAudioAttributes(mAudioAttributes);
1102    }
1103    return NO_ERROR;
1104}
1105
1106status_t MediaPlayerService::Client::setLooping(int loop)
1107{
1108    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1109    mLoop = loop;
1110    sp<MediaPlayerBase> p = getPlayer();
1111    if (p != 0) return p->setLooping(loop);
1112    return NO_ERROR;
1113}
1114
1115status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1116{
1117    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1118
1119    // for hardware output, call player instead
1120    sp<MediaPlayerBase> p = getPlayer();
1121    {
1122      Mutex::Autolock l(mLock);
1123      if (p != 0 && p->hardwareOutput()) {
1124          MediaPlayerHWInterface* hwp =
1125                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1126          return hwp->setVolume(leftVolume, rightVolume);
1127      } else {
1128          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1129          return NO_ERROR;
1130      }
1131    }
1132
1133    return NO_ERROR;
1134}
1135
1136status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1137{
1138    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1139    Mutex::Autolock l(mLock);
1140    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1141    return NO_ERROR;
1142}
1143
1144status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1145{
1146    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1147    Mutex::Autolock l(mLock);
1148    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1149    return NO_ERROR;
1150}
1151
1152status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1153    ALOGV("[%d] setParameter(%d)", mConnId, key);
1154    switch (key) {
1155    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1156    {
1157        Mutex::Autolock l(mLock);
1158        return setAudioAttributes_l(request);
1159    }
1160    default:
1161        sp<MediaPlayerBase> p = getPlayer();
1162        if (p == 0) { return UNKNOWN_ERROR; }
1163        return p->setParameter(key, request);
1164    }
1165}
1166
1167status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1168    ALOGV("[%d] getParameter(%d)", mConnId, key);
1169    sp<MediaPlayerBase> p = getPlayer();
1170    if (p == 0) return UNKNOWN_ERROR;
1171    return p->getParameter(key, reply);
1172}
1173
1174status_t MediaPlayerService::Client::setRetransmitEndpoint(
1175        const struct sockaddr_in* endpoint) {
1176
1177    if (NULL != endpoint) {
1178        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1179        uint16_t p = ntohs(endpoint->sin_port);
1180        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1181                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1182    } else {
1183        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1184    }
1185
1186    sp<MediaPlayerBase> p = getPlayer();
1187
1188    // Right now, the only valid time to set a retransmit endpoint is before
1189    // player selection has been made (since the presence or absence of a
1190    // retransmit endpoint is going to determine which player is selected during
1191    // setDataSource).
1192    if (p != 0) return INVALID_OPERATION;
1193
1194    if (NULL != endpoint) {
1195        mRetransmitEndpoint = *endpoint;
1196        mRetransmitEndpointValid = true;
1197    } else {
1198        mRetransmitEndpointValid = false;
1199    }
1200
1201    return NO_ERROR;
1202}
1203
1204status_t MediaPlayerService::Client::getRetransmitEndpoint(
1205        struct sockaddr_in* endpoint)
1206{
1207    if (NULL == endpoint)
1208        return BAD_VALUE;
1209
1210    sp<MediaPlayerBase> p = getPlayer();
1211
1212    if (p != NULL)
1213        return p->getRetransmitEndpoint(endpoint);
1214
1215    if (!mRetransmitEndpointValid)
1216        return NO_INIT;
1217
1218    *endpoint = mRetransmitEndpoint;
1219
1220    return NO_ERROR;
1221}
1222
1223void MediaPlayerService::Client::notify(
1224        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1225{
1226    Client* client = static_cast<Client*>(cookie);
1227    if (client == NULL) {
1228        return;
1229    }
1230
1231    sp<IMediaPlayerClient> c;
1232    {
1233        Mutex::Autolock l(client->mLock);
1234        c = client->mClient;
1235        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1236            if (client->mAudioOutput != NULL)
1237                client->mAudioOutput->switchToNextOutput();
1238            client->mNextClient->start();
1239            if (client->mNextClient->mClient != NULL) {
1240                client->mNextClient->mClient->notify(
1241                        MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1242            }
1243        }
1244    }
1245
1246    if (MEDIA_INFO == msg &&
1247        MEDIA_INFO_METADATA_UPDATE == ext1) {
1248        const media::Metadata::Type metadata_type = ext2;
1249
1250        if(client->shouldDropMetadata(metadata_type)) {
1251            return;
1252        }
1253
1254        // Update the list of metadata that have changed. getMetadata
1255        // also access mMetadataUpdated and clears it.
1256        client->addNewMetadataUpdate(metadata_type);
1257    }
1258
1259    if (c != NULL) {
1260        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1261        c->notify(msg, ext1, ext2, obj);
1262    }
1263}
1264
1265
1266bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1267{
1268    Mutex::Autolock lock(mLock);
1269
1270    if (findMetadata(mMetadataDrop, code)) {
1271        return true;
1272    }
1273
1274    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1275        return false;
1276    } else {
1277        return true;
1278    }
1279}
1280
1281
1282void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1283    Mutex::Autolock lock(mLock);
1284    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1285        mMetadataUpdated.add(metadata_type);
1286    }
1287}
1288
1289#if CALLBACK_ANTAGONIZER
1290const int Antagonizer::interval = 10000; // 10 msecs
1291
1292Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1293    mExit(false), mActive(false), mClient(client), mCb(cb)
1294{
1295    createThread(callbackThread, this);
1296}
1297
1298void Antagonizer::kill()
1299{
1300    Mutex::Autolock _l(mLock);
1301    mActive = false;
1302    mExit = true;
1303    mCondition.wait(mLock);
1304}
1305
1306int Antagonizer::callbackThread(void* user)
1307{
1308    ALOGD("Antagonizer started");
1309    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1310    while (!p->mExit) {
1311        if (p->mActive) {
1312            ALOGV("send event");
1313            p->mCb(p->mClient, 0, 0, 0);
1314        }
1315        usleep(interval);
1316    }
1317    Mutex::Autolock _l(p->mLock);
1318    p->mCondition.signal();
1319    ALOGD("Antagonizer stopped");
1320    return 0;
1321}
1322#endif
1323
1324#undef LOG_TAG
1325#define LOG_TAG "AudioSink"
1326MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1327        const audio_attributes_t* attr)
1328    : mCallback(NULL),
1329      mCallbackCookie(NULL),
1330      mCallbackData(NULL),
1331      mBytesWritten(0),
1332      mStreamType(AUDIO_STREAM_MUSIC),
1333      mLeftVolume(1.0),
1334      mRightVolume(1.0),
1335      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1336      mSampleRateHz(0),
1337      mMsecsPerFrame(0),
1338      mFrameSize(0),
1339      mSessionId(sessionId),
1340      mUid(uid),
1341      mPid(pid),
1342      mSendLevel(0.0),
1343      mAuxEffectId(0),
1344      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1345{
1346    ALOGV("AudioOutput(%d)", sessionId);
1347    if (attr != NULL) {
1348        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1349        if (mAttributes != NULL) {
1350            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1351            mStreamType = audio_attributes_to_stream_type(attr);
1352        }
1353    } else {
1354        mAttributes = NULL;
1355    }
1356
1357    setMinBufferCount();
1358}
1359
1360MediaPlayerService::AudioOutput::~AudioOutput()
1361{
1362    close();
1363    free(mAttributes);
1364    delete mCallbackData;
1365}
1366
1367//static
1368void MediaPlayerService::AudioOutput::setMinBufferCount()
1369{
1370    char value[PROPERTY_VALUE_MAX];
1371    if (property_get("ro.kernel.qemu", value, 0)) {
1372        mIsOnEmulator = true;
1373        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1374    }
1375}
1376
1377// static
1378bool MediaPlayerService::AudioOutput::isOnEmulator()
1379{
1380    setMinBufferCount(); // benign race wrt other threads
1381    return mIsOnEmulator;
1382}
1383
1384// static
1385int MediaPlayerService::AudioOutput::getMinBufferCount()
1386{
1387    setMinBufferCount(); // benign race wrt other threads
1388    return mMinBufferCount;
1389}
1390
1391ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1392{
1393    Mutex::Autolock lock(mLock);
1394    if (mTrack == 0) return NO_INIT;
1395    return mTrack->frameCount() * mFrameSize;
1396}
1397
1398ssize_t MediaPlayerService::AudioOutput::frameCount() const
1399{
1400    Mutex::Autolock lock(mLock);
1401    if (mTrack == 0) return NO_INIT;
1402    return mTrack->frameCount();
1403}
1404
1405ssize_t MediaPlayerService::AudioOutput::channelCount() const
1406{
1407    Mutex::Autolock lock(mLock);
1408    if (mTrack == 0) return NO_INIT;
1409    return mTrack->channelCount();
1410}
1411
1412ssize_t MediaPlayerService::AudioOutput::frameSize() const
1413{
1414    Mutex::Autolock lock(mLock);
1415    if (mTrack == 0) return NO_INIT;
1416    return mFrameSize;
1417}
1418
1419uint32_t MediaPlayerService::AudioOutput::latency () const
1420{
1421    Mutex::Autolock lock(mLock);
1422    if (mTrack == 0) return 0;
1423    return mTrack->latency();
1424}
1425
1426float MediaPlayerService::AudioOutput::msecsPerFrame() const
1427{
1428    Mutex::Autolock lock(mLock);
1429    return mMsecsPerFrame;
1430}
1431
1432status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1433{
1434    Mutex::Autolock lock(mLock);
1435    if (mTrack == 0) return NO_INIT;
1436    return mTrack->getPosition(position);
1437}
1438
1439status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1440{
1441    Mutex::Autolock lock(mLock);
1442    if (mTrack == 0) return NO_INIT;
1443    return mTrack->getTimestamp(ts);
1444}
1445
1446// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1447// as it acquires locks and may query the audio driver.
1448//
1449// Some calls could conceivably retrieve extrapolated data instead of
1450// accessing getTimestamp() or getPosition() every time a data buffer with
1451// a media time is received.
1452//
1453// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1454int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1455{
1456    Mutex::Autolock lock(mLock);
1457    if (mTrack == 0 || mSampleRateHz == 0) {
1458        return 0;
1459    }
1460
1461    uint32_t numFramesPlayed;
1462    int64_t numFramesPlayedAt;
1463    AudioTimestamp ts;
1464    static const int64_t kStaleTimestamp100ms = 100000;
1465
1466    status_t res = mTrack->getTimestamp(ts);
1467    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1468        numFramesPlayed = ts.mPosition;
1469        numFramesPlayedAt = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1470        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1471        if (timestampAge > kStaleTimestamp100ms) {
1472            // This is an audio FIXME.
1473            // getTimestamp returns a timestamp which may come from audio mixing threads.
1474            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1475            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1476            // the max latency should be about 25ms with an average around 12ms (to be verified).
1477            // For safety we use 100ms.
1478            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1479                    (long long)nowUs, (long long)numFramesPlayedAt);
1480            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1481        }
1482        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1483    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1484        numFramesPlayed = 0;
1485        numFramesPlayedAt = nowUs;
1486        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1487        //        numFramesPlayed, (long long)numFramesPlayedAt);
1488    } else {                         // case 3: transitory at new track or audio fast tracks.
1489        res = mTrack->getPosition(&numFramesPlayed);
1490        CHECK_EQ(res, (status_t)OK);
1491        numFramesPlayedAt = nowUs;
1492        numFramesPlayedAt += 1000LL * mTrack->latency() / 2; /* XXX */
1493        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1494    }
1495
1496    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1497    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1498    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1499            + nowUs - numFramesPlayedAt;
1500    if (durationUs < 0) {
1501        // Occurs when numFramesPlayed position is very small and the following:
1502        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1503        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1504        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1505        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1506        //
1507        // Both of these are transitory conditions.
1508        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1509        durationUs = 0;
1510    }
1511    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1512            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1513    return durationUs;
1514}
1515
1516status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1517{
1518    Mutex::Autolock lock(mLock);
1519    if (mTrack == 0) return NO_INIT;
1520    *frameswritten = mBytesWritten / mFrameSize;
1521    return OK;
1522}
1523
1524status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1525{
1526    Mutex::Autolock lock(mLock);
1527    if (mTrack == 0) return NO_INIT;
1528    return mTrack->setParameters(keyValuePairs);
1529}
1530
1531String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1532{
1533    Mutex::Autolock lock(mLock);
1534    if (mTrack == 0) return String8::empty();
1535    return mTrack->getParameters(keys);
1536}
1537
1538void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1539    Mutex::Autolock lock(mLock);
1540    if (attributes == NULL) {
1541        free(mAttributes);
1542        mAttributes = NULL;
1543    } else {
1544        if (mAttributes == NULL) {
1545            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1546        }
1547        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1548        mStreamType = audio_attributes_to_stream_type(attributes);
1549    }
1550}
1551
1552void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1553{
1554    Mutex::Autolock lock(mLock);
1555    // do not allow direct stream type modification if attributes have been set
1556    if (mAttributes == NULL) {
1557        mStreamType = streamType;
1558    }
1559}
1560
1561void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1562{
1563    ALOGV("deleteRecycledTrack_l");
1564    if (mRecycledTrack != 0) {
1565
1566        if (mCallbackData != NULL) {
1567            mCallbackData->setOutput(NULL);
1568            mCallbackData->endTrackSwitch();
1569        }
1570
1571        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1572            mRecycledTrack->flush();
1573        }
1574        // An offloaded track isn't flushed because the STREAM_END is reported
1575        // slightly prematurely to allow time for the gapless track switch
1576        // but this means that if we decide not to recycle the track there
1577        // could be a small amount of residual data still playing. We leave
1578        // AudioFlinger to drain the track.
1579
1580        mRecycledTrack.clear();
1581        close_l();
1582        delete mCallbackData;
1583        mCallbackData = NULL;
1584    }
1585}
1586
1587void MediaPlayerService::AudioOutput::close_l()
1588{
1589    mTrack.clear();
1590}
1591
1592status_t MediaPlayerService::AudioOutput::open(
1593        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1594        audio_format_t format, int bufferCount,
1595        AudioCallback cb, void *cookie,
1596        audio_output_flags_t flags,
1597        const audio_offload_info_t *offloadInfo,
1598        bool doNotReconnect,
1599        uint32_t suggestedFrameCount)
1600{
1601    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1602                format, bufferCount, mSessionId, flags);
1603
1604    // offloading is only supported in callback mode for now.
1605    // offloadInfo must be present if offload flag is set
1606    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1607            ((cb == NULL) || (offloadInfo == NULL))) {
1608        return BAD_VALUE;
1609    }
1610
1611    // compute frame count for the AudioTrack internal buffer
1612    size_t frameCount;
1613    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1614        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1615    } else {
1616        // try to estimate the buffer processing fetch size from AudioFlinger.
1617        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1618        uint32_t afSampleRate;
1619        size_t afFrameCount;
1620        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1621            return NO_INIT;
1622        }
1623        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1624            return NO_INIT;
1625        }
1626        const size_t framesPerBuffer =
1627                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1628
1629        if (bufferCount == 0) {
1630            // use suggestedFrameCount
1631            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1632        }
1633        // Check argument bufferCount against the mininum buffer count
1634        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1635            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1636            bufferCount = mMinBufferCount;
1637        }
1638        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1639        // which will be the minimum size permitted.
1640        frameCount = bufferCount * framesPerBuffer;
1641    }
1642
1643    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1644        channelMask = audio_channel_out_mask_from_count(channelCount);
1645        if (0 == channelMask) {
1646            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1647            return NO_INIT;
1648        }
1649    }
1650
1651    Mutex::Autolock lock(mLock);
1652    mCallback = cb;
1653    mCallbackCookie = cookie;
1654
1655    // Check whether we can recycle the track
1656    bool reuse = false;
1657    bool bothOffloaded = false;
1658
1659    if (mRecycledTrack != 0) {
1660        // check whether we are switching between two offloaded tracks
1661        bothOffloaded = (flags & mRecycledTrack->getFlags()
1662                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1663
1664        // check if the existing track can be reused as-is, or if a new track needs to be created.
1665        reuse = true;
1666
1667        if ((mCallbackData == NULL && mCallback != NULL) ||
1668                (mCallbackData != NULL && mCallback == NULL)) {
1669            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1670            ALOGV("can't chain callback and write");
1671            reuse = false;
1672        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1673                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1674            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1675                  mRecycledTrack->getSampleRate(), sampleRate,
1676                  mRecycledTrack->channelCount(), channelCount);
1677            reuse = false;
1678        } else if (flags != mFlags) {
1679            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1680            reuse = false;
1681        } else if (mRecycledTrack->format() != format) {
1682            reuse = false;
1683        }
1684    } else {
1685        ALOGV("no track available to recycle");
1686    }
1687
1688    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1689
1690    // If we can't recycle and both tracks are offloaded
1691    // we must close the previous output before opening a new one
1692    if (bothOffloaded && !reuse) {
1693        ALOGV("both offloaded and not recycling");
1694        deleteRecycledTrack_l();
1695    }
1696
1697    sp<AudioTrack> t;
1698    CallbackData *newcbd = NULL;
1699
1700    // We don't attempt to create a new track if we are recycling an
1701    // offloaded track. But, if we are recycling a non-offloaded or we
1702    // are switching where one is offloaded and one isn't then we create
1703    // the new track in advance so that we can read additional stream info
1704
1705    if (!(reuse && bothOffloaded)) {
1706        ALOGV("creating new AudioTrack");
1707
1708        if (mCallback != NULL) {
1709            newcbd = new CallbackData(this);
1710            t = new AudioTrack(
1711                    mStreamType,
1712                    sampleRate,
1713                    format,
1714                    channelMask,
1715                    frameCount,
1716                    flags,
1717                    CallbackWrapper,
1718                    newcbd,
1719                    0,  // notification frames
1720                    mSessionId,
1721                    AudioTrack::TRANSFER_CALLBACK,
1722                    offloadInfo,
1723                    mUid,
1724                    mPid,
1725                    mAttributes,
1726                    doNotReconnect);
1727        } else {
1728            t = new AudioTrack(
1729                    mStreamType,
1730                    sampleRate,
1731                    format,
1732                    channelMask,
1733                    frameCount,
1734                    flags,
1735                    NULL, // callback
1736                    NULL, // user data
1737                    0, // notification frames
1738                    mSessionId,
1739                    AudioTrack::TRANSFER_DEFAULT,
1740                    NULL, // offload info
1741                    mUid,
1742                    mPid,
1743                    mAttributes,
1744                    doNotReconnect);
1745        }
1746
1747        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1748            ALOGE("Unable to create audio track");
1749            delete newcbd;
1750            // t goes out of scope, so reference count drops to zero
1751            return NO_INIT;
1752        } else {
1753            // successful AudioTrack initialization implies a legacy stream type was generated
1754            // from the audio attributes
1755            mStreamType = t->streamType();
1756        }
1757    }
1758
1759    if (reuse) {
1760        CHECK(mRecycledTrack != NULL);
1761
1762        if (!bothOffloaded) {
1763            if (mRecycledTrack->frameCount() != t->frameCount()) {
1764                ALOGV("framecount differs: %u/%u frames",
1765                      mRecycledTrack->frameCount(), t->frameCount());
1766                reuse = false;
1767            }
1768        }
1769
1770        if (reuse) {
1771            ALOGV("chaining to next output and recycling track");
1772            close_l();
1773            mTrack = mRecycledTrack;
1774            mRecycledTrack.clear();
1775            if (mCallbackData != NULL) {
1776                mCallbackData->setOutput(this);
1777            }
1778            delete newcbd;
1779            return OK;
1780        }
1781    }
1782
1783    // we're not going to reuse the track, unblock and flush it
1784    // this was done earlier if both tracks are offloaded
1785    if (!bothOffloaded) {
1786        deleteRecycledTrack_l();
1787    }
1788
1789    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1790
1791    mCallbackData = newcbd;
1792    ALOGV("setVolume");
1793    t->setVolume(mLeftVolume, mRightVolume);
1794
1795    mSampleRateHz = sampleRate;
1796    mFlags = flags;
1797    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1798    mFrameSize = t->frameSize();
1799    uint32_t pos;
1800    if (t->getPosition(&pos) == OK) {
1801        mBytesWritten = uint64_t(pos) * mFrameSize;
1802    }
1803    mTrack = t;
1804
1805    status_t res = NO_ERROR;
1806    // Note some output devices may give us a direct track even though we don't specify it.
1807    // Example: Line application b/17459982.
1808    if ((t->getFlags() & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1809        res = t->setPlaybackRate(mPlaybackRate);
1810        if (res == NO_ERROR) {
1811            t->setAuxEffectSendLevel(mSendLevel);
1812            res = t->attachAuxEffect(mAuxEffectId);
1813        }
1814    }
1815    ALOGV("open() DONE status %d", res);
1816    return res;
1817}
1818
1819status_t MediaPlayerService::AudioOutput::start()
1820{
1821    ALOGV("start");
1822    Mutex::Autolock lock(mLock);
1823    if (mCallbackData != NULL) {
1824        mCallbackData->endTrackSwitch();
1825    }
1826    if (mTrack != 0) {
1827        mTrack->setVolume(mLeftVolume, mRightVolume);
1828        mTrack->setAuxEffectSendLevel(mSendLevel);
1829        return mTrack->start();
1830    }
1831    return NO_INIT;
1832}
1833
1834void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1835    Mutex::Autolock lock(mLock);
1836    mNextOutput = nextOutput;
1837}
1838
1839void MediaPlayerService::AudioOutput::switchToNextOutput() {
1840    ALOGV("switchToNextOutput");
1841
1842    // Try to acquire the callback lock before moving track (without incurring deadlock).
1843    const unsigned kMaxSwitchTries = 100;
1844    Mutex::Autolock lock(mLock);
1845    for (unsigned tries = 0;;) {
1846        if (mTrack == 0) {
1847            return;
1848        }
1849        if (mNextOutput != NULL && mNextOutput != this) {
1850            if (mCallbackData != NULL) {
1851                // two alternative approaches
1852#if 1
1853                CallbackData *callbackData = mCallbackData;
1854                mLock.unlock();
1855                // proper acquisition sequence
1856                callbackData->lock();
1857                mLock.lock();
1858                // Caution: it is unlikely that someone deleted our callback or changed our target
1859                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1860                    // fatal if we are starved out.
1861                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1862                            "switchToNextOutput() cannot obtain correct lock sequence");
1863                    callbackData->unlock();
1864                    continue;
1865                }
1866                callbackData->mSwitching = true; // begin track switch
1867#else
1868                // tryBeginTrackSwitch() returns false if the callback has the lock.
1869                if (!mCallbackData->tryBeginTrackSwitch()) {
1870                    // fatal if we are starved out.
1871                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1872                            "switchToNextOutput() cannot obtain callback lock");
1873                    mLock.unlock();
1874                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1875                    mLock.lock();
1876                    continue;
1877                }
1878#endif
1879            }
1880
1881            Mutex::Autolock nextLock(mNextOutput->mLock);
1882
1883            // If the next output track is not NULL, then it has been
1884            // opened already for playback.
1885            // This is possible even without the next player being started,
1886            // for example, the next player could be prepared and seeked.
1887            //
1888            // Presuming it isn't advisable to force the track over.
1889             if (mNextOutput->mTrack == NULL) {
1890                ALOGD("Recycling track for gapless playback");
1891                delete mNextOutput->mCallbackData;
1892                mNextOutput->mCallbackData = mCallbackData;
1893                mNextOutput->mRecycledTrack = mTrack;
1894                mNextOutput->mSampleRateHz = mSampleRateHz;
1895                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1896                mNextOutput->mBytesWritten = mBytesWritten;
1897                mNextOutput->mFlags = mFlags;
1898                mNextOutput->mFrameSize = mFrameSize;
1899                close_l();
1900                mCallbackData = NULL;  // destruction handled by mNextOutput
1901            } else {
1902                ALOGW("Ignoring gapless playback because next player has already started");
1903                // remove track in case resource needed for future players.
1904                if (mCallbackData != NULL) {
1905                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
1906                }
1907                close_l();
1908            }
1909        }
1910        break;
1911    }
1912}
1913
1914ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1915{
1916    Mutex::Autolock lock(mLock);
1917    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1918
1919    //ALOGV("write(%p, %u)", buffer, size);
1920    if (mTrack != 0) {
1921        ssize_t ret = mTrack->write(buffer, size, blocking);
1922        if (ret >= 0) {
1923            mBytesWritten += ret;
1924        }
1925        return ret;
1926    }
1927    return NO_INIT;
1928}
1929
1930void MediaPlayerService::AudioOutput::stop()
1931{
1932    ALOGV("stop");
1933    Mutex::Autolock lock(mLock);
1934    mBytesWritten = 0;
1935    if (mTrack != 0) mTrack->stop();
1936}
1937
1938void MediaPlayerService::AudioOutput::flush()
1939{
1940    ALOGV("flush");
1941    Mutex::Autolock lock(mLock);
1942    mBytesWritten = 0;
1943    if (mTrack != 0) mTrack->flush();
1944}
1945
1946void MediaPlayerService::AudioOutput::pause()
1947{
1948    ALOGV("pause");
1949    Mutex::Autolock lock(mLock);
1950    if (mTrack != 0) mTrack->pause();
1951}
1952
1953void MediaPlayerService::AudioOutput::close()
1954{
1955    ALOGV("close");
1956    sp<AudioTrack> track;
1957    {
1958        Mutex::Autolock lock(mLock);
1959        track = mTrack;
1960        close_l(); // clears mTrack
1961    }
1962    // destruction of the track occurs outside of mutex.
1963}
1964
1965void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1966{
1967    ALOGV("setVolume(%f, %f)", left, right);
1968    Mutex::Autolock lock(mLock);
1969    mLeftVolume = left;
1970    mRightVolume = right;
1971    if (mTrack != 0) {
1972        mTrack->setVolume(left, right);
1973    }
1974}
1975
1976status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
1977{
1978    ALOGV("setPlaybackRate(%f %f %d %d)",
1979                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1980    Mutex::Autolock lock(mLock);
1981    if (mTrack == 0) {
1982        // remember rate so that we can set it when the track is opened
1983        mPlaybackRate = rate;
1984        return OK;
1985    }
1986    status_t res = mTrack->setPlaybackRate(rate);
1987    if (res != NO_ERROR) {
1988        return res;
1989    }
1990    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
1991    CHECK_GT(rate.mSpeed, 0.f);
1992    mPlaybackRate = rate;
1993    if (mSampleRateHz != 0) {
1994        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
1995    }
1996    return res;
1997}
1998
1999status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2000{
2001    ALOGV("setPlaybackRate");
2002    Mutex::Autolock lock(mLock);
2003    if (mTrack == 0) {
2004        return NO_INIT;
2005    }
2006    *rate = mTrack->getPlaybackRate();
2007    return NO_ERROR;
2008}
2009
2010status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2011{
2012    ALOGV("setAuxEffectSendLevel(%f)", level);
2013    Mutex::Autolock lock(mLock);
2014    mSendLevel = level;
2015    if (mTrack != 0) {
2016        return mTrack->setAuxEffectSendLevel(level);
2017    }
2018    return NO_ERROR;
2019}
2020
2021status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2022{
2023    ALOGV("attachAuxEffect(%d)", effectId);
2024    Mutex::Autolock lock(mLock);
2025    mAuxEffectId = effectId;
2026    if (mTrack != 0) {
2027        return mTrack->attachAuxEffect(effectId);
2028    }
2029    return NO_ERROR;
2030}
2031
2032// static
2033void MediaPlayerService::AudioOutput::CallbackWrapper(
2034        int event, void *cookie, void *info) {
2035    //ALOGV("callbackwrapper");
2036    CallbackData *data = (CallbackData*)cookie;
2037    // lock to ensure we aren't caught in the middle of a track switch.
2038    data->lock();
2039    AudioOutput *me = data->getOutput();
2040    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2041    if (me == NULL) {
2042        // no output set, likely because the track was scheduled to be reused
2043        // by another player, but the format turned out to be incompatible.
2044        data->unlock();
2045        if (buffer != NULL) {
2046            buffer->size = 0;
2047        }
2048        return;
2049    }
2050
2051    switch(event) {
2052    case AudioTrack::EVENT_MORE_DATA: {
2053        size_t actualSize = (*me->mCallback)(
2054                me, buffer->raw, buffer->size, me->mCallbackCookie,
2055                CB_EVENT_FILL_BUFFER);
2056
2057        // Log when no data is returned from the callback.
2058        // (1) We may have no data (especially with network streaming sources).
2059        // (2) We may have reached the EOS and the audio track is not stopped yet.
2060        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2061        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2062        //
2063        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2064        // nevertheless for power reasons, we don't want to see too many of these.
2065
2066        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2067
2068        me->mBytesWritten += actualSize;  // benign race with reader.
2069        buffer->size = actualSize;
2070        } break;
2071
2072    case AudioTrack::EVENT_STREAM_END:
2073        // currently only occurs for offloaded callbacks
2074        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2075        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2076                me->mCallbackCookie, CB_EVENT_STREAM_END);
2077        break;
2078
2079    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2080        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2081        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2082                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2083        break;
2084
2085    case AudioTrack::EVENT_UNDERRUN:
2086        // This occurs when there is no data available, typically
2087        // when there is a failure to supply data to the AudioTrack.  It can also
2088        // occur in non-offloaded mode when the audio device comes out of standby.
2089        //
2090        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2091        // it may sound like an audible pop or glitch.
2092        //
2093        // The underrun event is sent once per track underrun; the condition is reset
2094        // when more data is sent to the AudioTrack.
2095        ALOGI("callbackwrapper: EVENT_UNDERRUN (discarded)");
2096        break;
2097
2098    default:
2099        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2100    }
2101
2102    data->unlock();
2103}
2104
2105int MediaPlayerService::AudioOutput::getSessionId() const
2106{
2107    Mutex::Autolock lock(mLock);
2108    return mSessionId;
2109}
2110
2111uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2112{
2113    Mutex::Autolock lock(mLock);
2114    if (mTrack == 0) return 0;
2115    return mTrack->getSampleRate();
2116}
2117
2118////////////////////////////////////////////////////////////////////////////////
2119
2120struct CallbackThread : public Thread {
2121    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2122                   MediaPlayerBase::AudioSink::AudioCallback cb,
2123                   void *cookie);
2124
2125protected:
2126    virtual ~CallbackThread();
2127
2128    virtual bool threadLoop();
2129
2130private:
2131    wp<MediaPlayerBase::AudioSink> mSink;
2132    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2133    void *mCookie;
2134    void *mBuffer;
2135    size_t mBufferSize;
2136
2137    CallbackThread(const CallbackThread &);
2138    CallbackThread &operator=(const CallbackThread &);
2139};
2140
2141CallbackThread::CallbackThread(
2142        const wp<MediaPlayerBase::AudioSink> &sink,
2143        MediaPlayerBase::AudioSink::AudioCallback cb,
2144        void *cookie)
2145    : mSink(sink),
2146      mCallback(cb),
2147      mCookie(cookie),
2148      mBuffer(NULL),
2149      mBufferSize(0) {
2150}
2151
2152CallbackThread::~CallbackThread() {
2153    if (mBuffer) {
2154        free(mBuffer);
2155        mBuffer = NULL;
2156    }
2157}
2158
2159bool CallbackThread::threadLoop() {
2160    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2161    if (sink == NULL) {
2162        return false;
2163    }
2164
2165    if (mBuffer == NULL) {
2166        mBufferSize = sink->bufferSize();
2167        mBuffer = malloc(mBufferSize);
2168    }
2169
2170    size_t actualSize =
2171        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2172                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2173
2174    if (actualSize > 0) {
2175        sink->write(mBuffer, actualSize);
2176        // Could return false on sink->write() error or short count.
2177        // Not necessarily appropriate but would work for AudioCache behavior.
2178    }
2179
2180    return true;
2181}
2182
2183////////////////////////////////////////////////////////////////////////////////
2184
2185void MediaPlayerService::addBatteryData(uint32_t params)
2186{
2187    Mutex::Autolock lock(mLock);
2188
2189    int32_t time = systemTime() / 1000000L;
2190
2191    // change audio output devices. This notification comes from AudioFlinger
2192    if ((params & kBatteryDataSpeakerOn)
2193            || (params & kBatteryDataOtherAudioDeviceOn)) {
2194
2195        int deviceOn[NUM_AUDIO_DEVICES];
2196        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2197            deviceOn[i] = 0;
2198        }
2199
2200        if ((params & kBatteryDataSpeakerOn)
2201                && (params & kBatteryDataOtherAudioDeviceOn)) {
2202            deviceOn[SPEAKER_AND_OTHER] = 1;
2203        } else if (params & kBatteryDataSpeakerOn) {
2204            deviceOn[SPEAKER] = 1;
2205        } else {
2206            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2207        }
2208
2209        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2210            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2211
2212                if (mBatteryAudio.refCount > 0) { // if playing audio
2213                    if (!deviceOn[i]) {
2214                        mBatteryAudio.lastTime[i] += time;
2215                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2216                        mBatteryAudio.lastTime[i] = 0;
2217                    } else {
2218                        mBatteryAudio.lastTime[i] = 0 - time;
2219                    }
2220                }
2221
2222                mBatteryAudio.deviceOn[i] = deviceOn[i];
2223            }
2224        }
2225        return;
2226    }
2227
2228    // an audio stream is started
2229    if (params & kBatteryDataAudioFlingerStart) {
2230        // record the start time only if currently no other audio
2231        // is being played
2232        if (mBatteryAudio.refCount == 0) {
2233            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2234                if (mBatteryAudio.deviceOn[i]) {
2235                    mBatteryAudio.lastTime[i] -= time;
2236                }
2237            }
2238        }
2239
2240        mBatteryAudio.refCount ++;
2241        return;
2242
2243    } else if (params & kBatteryDataAudioFlingerStop) {
2244        if (mBatteryAudio.refCount <= 0) {
2245            ALOGW("Battery track warning: refCount is <= 0");
2246            return;
2247        }
2248
2249        // record the stop time only if currently this is the only
2250        // audio being played
2251        if (mBatteryAudio.refCount == 1) {
2252            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2253                if (mBatteryAudio.deviceOn[i]) {
2254                    mBatteryAudio.lastTime[i] += time;
2255                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2256                    mBatteryAudio.lastTime[i] = 0;
2257                }
2258            }
2259        }
2260
2261        mBatteryAudio.refCount --;
2262        return;
2263    }
2264
2265    int uid = IPCThreadState::self()->getCallingUid();
2266    if (uid == AID_MEDIA) {
2267        return;
2268    }
2269    int index = mBatteryData.indexOfKey(uid);
2270
2271    if (index < 0) { // create a new entry for this UID
2272        BatteryUsageInfo info;
2273        info.audioTotalTime = 0;
2274        info.videoTotalTime = 0;
2275        info.audioLastTime = 0;
2276        info.videoLastTime = 0;
2277        info.refCount = 0;
2278
2279        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2280            ALOGE("Battery track error: no memory for new app");
2281            return;
2282        }
2283    }
2284
2285    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2286
2287    if (params & kBatteryDataCodecStarted) {
2288        if (params & kBatteryDataTrackAudio) {
2289            info.audioLastTime -= time;
2290            info.refCount ++;
2291        }
2292        if (params & kBatteryDataTrackVideo) {
2293            info.videoLastTime -= time;
2294            info.refCount ++;
2295        }
2296    } else {
2297        if (info.refCount == 0) {
2298            ALOGW("Battery track warning: refCount is already 0");
2299            return;
2300        } else if (info.refCount < 0) {
2301            ALOGE("Battery track error: refCount < 0");
2302            mBatteryData.removeItem(uid);
2303            return;
2304        }
2305
2306        if (params & kBatteryDataTrackAudio) {
2307            info.audioLastTime += time;
2308            info.refCount --;
2309        }
2310        if (params & kBatteryDataTrackVideo) {
2311            info.videoLastTime += time;
2312            info.refCount --;
2313        }
2314
2315        // no stream is being played by this UID
2316        if (info.refCount == 0) {
2317            info.audioTotalTime += info.audioLastTime;
2318            info.audioLastTime = 0;
2319            info.videoTotalTime += info.videoLastTime;
2320            info.videoLastTime = 0;
2321        }
2322    }
2323}
2324
2325status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2326    Mutex::Autolock lock(mLock);
2327
2328    // audio output devices usage
2329    int32_t time = systemTime() / 1000000L; //in ms
2330    int32_t totalTime;
2331
2332    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2333        totalTime = mBatteryAudio.totalTime[i];
2334
2335        if (mBatteryAudio.deviceOn[i]
2336            && (mBatteryAudio.lastTime[i] != 0)) {
2337                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2338                totalTime += tmpTime;
2339        }
2340
2341        reply->writeInt32(totalTime);
2342        // reset the total time
2343        mBatteryAudio.totalTime[i] = 0;
2344   }
2345
2346    // codec usage
2347    BatteryUsageInfo info;
2348    int size = mBatteryData.size();
2349
2350    reply->writeInt32(size);
2351    int i = 0;
2352
2353    while (i < size) {
2354        info = mBatteryData.valueAt(i);
2355
2356        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2357        reply->writeInt32(info.audioTotalTime);
2358        reply->writeInt32(info.videoTotalTime);
2359
2360        info.audioTotalTime = 0;
2361        info.videoTotalTime = 0;
2362
2363        // remove the UID entry where no stream is being played
2364        if (info.refCount <= 0) {
2365            mBatteryData.removeItemsAt(i);
2366            size --;
2367            i --;
2368        }
2369        i++;
2370    }
2371    return NO_ERROR;
2372}
2373} // namespace android
2374