MediaPlayerService.cpp revision e104596061b219e9bce6d4db49a9d15242f8d2e5 
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/SurfaceTextureClient.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46
47#include <media/IRemoteDisplay.h>
48#include <media/IRemoteDisplayClient.h>
49#include <media/MediaPlayerInterface.h>
50#include <media/mediarecorder.h>
51#include <media/MediaMetadataRetrieverInterface.h>
52#include <media/Metadata.h>
53#include <media/AudioTrack.h>
54#include <media/MemoryLeakTrackUtil.h>
55#include <media/stagefright/MediaErrors.h>
56
57#include <system/audio.h>
58
59#include <private/android_filesystem_config.h>
60
61#include "ActivityManager.h"
62#include "MediaRecorderClient.h"
63#include "MediaPlayerService.h"
64#include "MetadataRetrieverClient.h"
65#include "MediaPlayerFactory.h"
66
67#include "MidiFile.h"
68#include "TestPlayerStub.h"
69#include "StagefrightPlayer.h"
70#include "nuplayer/NuPlayerDriver.h"
71
72#include <OMX.h>
73
74#include "Crypto.h"
75#include "RemoteDisplay.h"
76
77namespace {
78using android::media::Metadata;
79using android::status_t;
80using android::OK;
81using android::BAD_VALUE;
82using android::NOT_ENOUGH_DATA;
83using android::Parcel;
84
85// Max number of entries in the filter.
86const int kMaxFilterSize = 64;  // I pulled that out of thin air.
87
88// FIXME: Move all the metadata related function in the Metadata.cpp
89
90
91// Unmarshall a filter from a Parcel.
92// Filter format in a parcel:
93//
94//  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
95// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
96// |                       number of entries (n)                   |
97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
98// |                       metadata type 1                         |
99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
100// |                       metadata type 2                         |
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102//  ....
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type n                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106//
107// @param p Parcel that should start with a filter.
108// @param[out] filter On exit contains the list of metadata type to be
109//                    filtered.
110// @param[out] status On exit contains the status code to be returned.
111// @return true if the parcel starts with a valid filter.
112bool unmarshallFilter(const Parcel& p,
113                      Metadata::Filter *filter,
114                      status_t *status)
115{
116    int32_t val;
117    if (p.readInt32(&val) != OK)
118    {
119        ALOGE("Failed to read filter's length");
120        *status = NOT_ENOUGH_DATA;
121        return false;
122    }
123
124    if( val > kMaxFilterSize || val < 0)
125    {
126        ALOGE("Invalid filter len %d", val);
127        *status = BAD_VALUE;
128        return false;
129    }
130
131    const size_t num = val;
132
133    filter->clear();
134    filter->setCapacity(num);
135
136    size_t size = num * sizeof(Metadata::Type);
137
138
139    if (p.dataAvail() < size)
140    {
141        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
142        *status = NOT_ENOUGH_DATA;
143        return false;
144    }
145
146    const Metadata::Type *data =
147            static_cast<const Metadata::Type*>(p.readInplace(size));
148
149    if (NULL == data)
150    {
151        ALOGE("Filter had no data");
152        *status = BAD_VALUE;
153        return false;
154    }
155
156    // TODO: The stl impl of vector would be more efficient here
157    // because it degenerates into a memcpy on pod types. Try to
158    // replace later or use stl::set.
159    for (size_t i = 0; i < num; ++i)
160    {
161        filter->add(*data);
162        ++data;
163    }
164    *status = OK;
165    return true;
166}
167
168// @param filter Of metadata type.
169// @param val To be searched.
170// @return true if a match was found.
171bool findMetadata(const Metadata::Filter& filter, const int32_t val)
172{
173    // Deal with empty and ANY right away
174    if (filter.isEmpty()) return false;
175    if (filter[0] == Metadata::kAny) return true;
176
177    return filter.indexOf(val) >= 0;
178}
179
180}  // anonymous namespace
181
182
183namespace android {
184
185static bool checkPermission(const char* permissionString) {
186#ifndef HAVE_ANDROID_OS
187    return true;
188#endif
189    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
190    bool ok = checkCallingPermission(String16(permissionString));
191    if (!ok) ALOGE("Request requires %s", permissionString);
192    return ok;
193}
194
195// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
196/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
197/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
198
199void MediaPlayerService::instantiate() {
200    defaultServiceManager()->addService(
201            String16("media.player"), new MediaPlayerService());
202}
203
204MediaPlayerService::MediaPlayerService()
205{
206    ALOGV("MediaPlayerService created");
207    mNextConnId = 1;
208
209    mBatteryAudio.refCount = 0;
210    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
211        mBatteryAudio.deviceOn[i] = 0;
212        mBatteryAudio.lastTime[i] = 0;
213        mBatteryAudio.totalTime[i] = 0;
214    }
215    // speaker is on by default
216    mBatteryAudio.deviceOn[SPEAKER] = 1;
217
218    MediaPlayerFactory::registerBuiltinFactories();
219}
220
221MediaPlayerService::~MediaPlayerService()
222{
223    ALOGV("MediaPlayerService destroyed");
224}
225
226sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
227{
228    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
229    wp<MediaRecorderClient> w = recorder;
230    Mutex::Autolock lock(mLock);
231    mMediaRecorderClients.add(w);
232    ALOGV("Create new media recorder client from pid %d", pid);
233    return recorder;
234}
235
236void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
237{
238    Mutex::Autolock lock(mLock);
239    mMediaRecorderClients.remove(client);
240    ALOGV("Delete media recorder client");
241}
242
243sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
244{
245    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
246    ALOGV("Create new media retriever from pid %d", pid);
247    return retriever;
248}
249
250sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
251        int audioSessionId)
252{
253    int32_t connId = android_atomic_inc(&mNextConnId);
254
255    sp<Client> c = new Client(
256            this, pid, connId, client, audioSessionId,
257            IPCThreadState::self()->getCallingUid());
258
259    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
260         IPCThreadState::self()->getCallingUid());
261
262    wp<Client> w = c;
263    {
264        Mutex::Autolock lock(mLock);
265        mClients.add(w);
266    }
267    return c;
268}
269
270sp<IOMX> MediaPlayerService::getOMX() {
271    Mutex::Autolock autoLock(mLock);
272
273    if (mOMX.get() == NULL) {
274        mOMX = new OMX;
275    }
276
277    return mOMX;
278}
279
280sp<ICrypto> MediaPlayerService::makeCrypto() {
281    return new Crypto;
282}
283
284sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
285        const sp<IRemoteDisplayClient>& client, const String8& iface) {
286    // TODO: implement me!
287    return NULL;
288}
289
290status_t MediaPlayerService::enableRemoteDisplay(const char *iface) {
291    Mutex::Autolock autoLock(mLock);
292
293    if (iface != NULL) {
294        if (mRemoteDisplay != NULL) {
295            return INVALID_OPERATION;
296        }
297
298        mRemoteDisplay = new RemoteDisplay;
299
300        status_t err = mRemoteDisplay->start(iface);
301
302        if (err != OK) {
303            mRemoteDisplay.clear();
304            return err;
305        }
306
307        return OK;
308    }
309
310    if (mRemoteDisplay != NULL) {
311        mRemoteDisplay->stop();
312        mRemoteDisplay.clear();
313    }
314
315    return OK;
316}
317
318status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
319{
320    const size_t SIZE = 256;
321    char buffer[SIZE];
322    String8 result;
323
324    result.append(" AudioCache\n");
325    if (mHeap != 0) {
326        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
327                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
328        result.append(buffer);
329    }
330    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
331            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
332    result.append(buffer);
333    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
334            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
335    result.append(buffer);
336    ::write(fd, result.string(), result.size());
337    return NO_ERROR;
338}
339
340status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
341{
342    const size_t SIZE = 256;
343    char buffer[SIZE];
344    String8 result;
345
346    result.append(" AudioOutput\n");
347    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
348            mStreamType, mLeftVolume, mRightVolume);
349    result.append(buffer);
350    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
351            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
352    result.append(buffer);
353    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
354            mAuxEffectId, mSendLevel);
355    result.append(buffer);
356
357    ::write(fd, result.string(), result.size());
358    if (mTrack != 0) {
359        mTrack->dump(fd, args);
360    }
361    return NO_ERROR;
362}
363
364status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
365{
366    const size_t SIZE = 256;
367    char buffer[SIZE];
368    String8 result;
369    result.append(" Client\n");
370    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
371            mPid, mConnId, mStatus, mLoop?"true": "false");
372    result.append(buffer);
373    write(fd, result.string(), result.size());
374    if (mPlayer != NULL) {
375        mPlayer->dump(fd, args);
376    }
377    if (mAudioOutput != 0) {
378        mAudioOutput->dump(fd, args);
379    }
380    write(fd, "\n", 1);
381    return NO_ERROR;
382}
383
384status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
385{
386    const size_t SIZE = 256;
387    char buffer[SIZE];
388    String8 result;
389    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
390        snprintf(buffer, SIZE, "Permission Denial: "
391                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
392                IPCThreadState::self()->getCallingPid(),
393                IPCThreadState::self()->getCallingUid());
394        result.append(buffer);
395    } else {
396        Mutex::Autolock lock(mLock);
397        for (int i = 0, n = mClients.size(); i < n; ++i) {
398            sp<Client> c = mClients[i].promote();
399            if (c != 0) c->dump(fd, args);
400        }
401        if (mMediaRecorderClients.size() == 0) {
402                result.append(" No media recorder client\n\n");
403        } else {
404            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
405                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
406                if (c != 0) {
407                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
408                    result.append(buffer);
409                    write(fd, result.string(), result.size());
410                    result = "\n";
411                    c->dump(fd, args);
412                }
413            }
414        }
415
416        result.append(" Files opened and/or mapped:\n");
417        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
418        FILE *f = fopen(buffer, "r");
419        if (f) {
420            while (!feof(f)) {
421                fgets(buffer, SIZE, f);
422                if (strstr(buffer, " /storage/") ||
423                    strstr(buffer, " /system/sounds/") ||
424                    strstr(buffer, " /data/") ||
425                    strstr(buffer, " /system/media/")) {
426                    result.append("  ");
427                    result.append(buffer);
428                }
429            }
430            fclose(f);
431        } else {
432            result.append("couldn't open ");
433            result.append(buffer);
434            result.append("\n");
435        }
436
437        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
438        DIR *d = opendir(buffer);
439        if (d) {
440            struct dirent *ent;
441            while((ent = readdir(d)) != NULL) {
442                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
443                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
444                    struct stat s;
445                    if (lstat(buffer, &s) == 0) {
446                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
447                            char linkto[256];
448                            int len = readlink(buffer, linkto, sizeof(linkto));
449                            if(len > 0) {
450                                if(len > 255) {
451                                    linkto[252] = '.';
452                                    linkto[253] = '.';
453                                    linkto[254] = '.';
454                                    linkto[255] = 0;
455                                } else {
456                                    linkto[len] = 0;
457                                }
458                                if (strstr(linkto, "/storage/") == linkto ||
459                                    strstr(linkto, "/system/sounds/") == linkto ||
460                                    strstr(linkto, "/data/") == linkto ||
461                                    strstr(linkto, "/system/media/") == linkto) {
462                                    result.append("  ");
463                                    result.append(buffer);
464                                    result.append(" -> ");
465                                    result.append(linkto);
466                                    result.append("\n");
467                                }
468                            }
469                        } else {
470                            result.append("  unexpected type for ");
471                            result.append(buffer);
472                            result.append("\n");
473                        }
474                    }
475                }
476            }
477            closedir(d);
478        } else {
479            result.append("couldn't open ");
480            result.append(buffer);
481            result.append("\n");
482        }
483
484        bool dumpMem = false;
485        for (size_t i = 0; i < args.size(); i++) {
486            if (args[i] == String16("-m")) {
487                dumpMem = true;
488            }
489        }
490        if (dumpMem) {
491            dumpMemoryAddresses(fd);
492        }
493    }
494    write(fd, result.string(), result.size());
495    return NO_ERROR;
496}
497
498void MediaPlayerService::removeClient(wp<Client> client)
499{
500    Mutex::Autolock lock(mLock);
501    mClients.remove(client);
502}
503
504MediaPlayerService::Client::Client(
505        const sp<MediaPlayerService>& service, pid_t pid,
506        int32_t connId, const sp<IMediaPlayerClient>& client,
507        int audioSessionId, uid_t uid)
508{
509    ALOGV("Client(%d) constructor", connId);
510    mPid = pid;
511    mConnId = connId;
512    mService = service;
513    mClient = client;
514    mLoop = false;
515    mStatus = NO_INIT;
516    mAudioSessionId = audioSessionId;
517    mUID = uid;
518    mRetransmitEndpointValid = false;
519
520#if CALLBACK_ANTAGONIZER
521    ALOGD("create Antagonizer");
522    mAntagonizer = new Antagonizer(notify, this);
523#endif
524}
525
526MediaPlayerService::Client::~Client()
527{
528    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
529    mAudioOutput.clear();
530    wp<Client> client(this);
531    disconnect();
532    mService->removeClient(client);
533}
534
535void MediaPlayerService::Client::disconnect()
536{
537    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
538    // grab local reference and clear main reference to prevent future
539    // access to object
540    sp<MediaPlayerBase> p;
541    {
542        Mutex::Autolock l(mLock);
543        p = mPlayer;
544    }
545    mClient.clear();
546
547    mPlayer.clear();
548
549    // clear the notification to prevent callbacks to dead client
550    // and reset the player. We assume the player will serialize
551    // access to itself if necessary.
552    if (p != 0) {
553        p->setNotifyCallback(0, 0);
554#if CALLBACK_ANTAGONIZER
555        ALOGD("kill Antagonizer");
556        mAntagonizer->kill();
557#endif
558        p->reset();
559    }
560
561    disconnectNativeWindow();
562
563    IPCThreadState::self()->flushCommands();
564}
565
566sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
567{
568    // determine if we have the right player type
569    sp<MediaPlayerBase> p = mPlayer;
570    if ((p != NULL) && (p->playerType() != playerType)) {
571        ALOGV("delete player");
572        p.clear();
573    }
574    if (p == NULL) {
575        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
576    }
577
578    if (p != NULL) {
579        p->setUID(mUID);
580    }
581
582    return p;
583}
584
585sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
586        player_type playerType)
587{
588    ALOGV("player type = %d", playerType);
589
590    // create the right type of player
591    sp<MediaPlayerBase> p = createPlayer(playerType);
592    if (p == NULL) {
593        return p;
594    }
595
596    if (!p->hardwareOutput()) {
597        mAudioOutput = new AudioOutput(mAudioSessionId);
598        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
599    }
600
601    return p;
602}
603
604void MediaPlayerService::Client::setDataSource_post(
605        const sp<MediaPlayerBase>& p,
606        status_t status)
607{
608    ALOGV(" setDataSource");
609    mStatus = status;
610    if (mStatus != OK) {
611        ALOGE("  error: %d", mStatus);
612        return;
613    }
614
615    // Set the re-transmission endpoint if one was chosen.
616    if (mRetransmitEndpointValid) {
617        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
618        if (mStatus != NO_ERROR) {
619            ALOGE("setRetransmitEndpoint error: %d", mStatus);
620        }
621    }
622
623    if (mStatus == OK) {
624        mPlayer = p;
625    }
626}
627
628status_t MediaPlayerService::Client::setDataSource(
629        const char *url, const KeyedVector<String8, String8> *headers)
630{
631    ALOGV("setDataSource(%s)", url);
632    if (url == NULL)
633        return UNKNOWN_ERROR;
634
635    if ((strncmp(url, "http://", 7) == 0) ||
636        (strncmp(url, "https://", 8) == 0) ||
637        (strncmp(url, "rtsp://", 7) == 0)) {
638        if (!checkPermission("android.permission.INTERNET")) {
639            return PERMISSION_DENIED;
640        }
641    }
642
643    if (strncmp(url, "content://", 10) == 0) {
644        // get a filedescriptor for the content Uri and
645        // pass it to the setDataSource(fd) method
646
647        String16 url16(url);
648        int fd = android::openContentProviderFile(url16);
649        if (fd < 0)
650        {
651            ALOGE("Couldn't open fd for %s", url);
652            return UNKNOWN_ERROR;
653        }
654        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
655        close(fd);
656        return mStatus;
657    } else {
658        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
659        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
660        if (p == NULL) {
661            return NO_INIT;
662        }
663
664        setDataSource_post(p, p->setDataSource(url, headers));
665        return mStatus;
666    }
667}
668
669status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
670{
671    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
672    struct stat sb;
673    int ret = fstat(fd, &sb);
674    if (ret != 0) {
675        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
676        return UNKNOWN_ERROR;
677    }
678
679    ALOGV("st_dev  = %llu", sb.st_dev);
680    ALOGV("st_mode = %u", sb.st_mode);
681    ALOGV("st_uid  = %lu", sb.st_uid);
682    ALOGV("st_gid  = %lu", sb.st_gid);
683    ALOGV("st_size = %llu", sb.st_size);
684
685    if (offset >= sb.st_size) {
686        ALOGE("offset error");
687        ::close(fd);
688        return UNKNOWN_ERROR;
689    }
690    if (offset + length > sb.st_size) {
691        length = sb.st_size - offset;
692        ALOGV("calculated length = %lld", length);
693    }
694
695    player_type playerType = MediaPlayerFactory::getPlayerType(this,
696                                                               fd,
697                                                               offset,
698                                                               length);
699    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
700    if (p == NULL) {
701        return NO_INIT;
702    }
703
704    // now set data source
705    setDataSource_post(p, p->setDataSource(fd, offset, length));
706    return mStatus;
707}
708
709status_t MediaPlayerService::Client::setDataSource(
710        const sp<IStreamSource> &source) {
711    // create the right type of player
712    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
713    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
714    if (p == NULL) {
715        return NO_INIT;
716    }
717
718    // now set data source
719    setDataSource_post(p, p->setDataSource(source));
720    return mStatus;
721}
722
723void MediaPlayerService::Client::disconnectNativeWindow() {
724    if (mConnectedWindow != NULL) {
725        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
726                NATIVE_WINDOW_API_MEDIA);
727
728        if (err != OK) {
729            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
730                    strerror(-err), err);
731        }
732    }
733    mConnectedWindow.clear();
734}
735
736status_t MediaPlayerService::Client::setVideoSurfaceTexture(
737        const sp<ISurfaceTexture>& surfaceTexture)
738{
739    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, surfaceTexture.get());
740    sp<MediaPlayerBase> p = getPlayer();
741    if (p == 0) return UNKNOWN_ERROR;
742
743    sp<IBinder> binder(surfaceTexture == NULL ? NULL :
744            surfaceTexture->asBinder());
745    if (mConnectedWindowBinder == binder) {
746        return OK;
747    }
748
749    sp<ANativeWindow> anw;
750    if (surfaceTexture != NULL) {
751        anw = new SurfaceTextureClient(surfaceTexture);
752        status_t err = native_window_api_connect(anw.get(),
753                NATIVE_WINDOW_API_MEDIA);
754
755        if (err != OK) {
756            ALOGE("setVideoSurfaceTexture failed: %d", err);
757            // Note that we must do the reset before disconnecting from the ANW.
758            // Otherwise queue/dequeue calls could be made on the disconnected
759            // ANW, which may result in errors.
760            reset();
761
762            disconnectNativeWindow();
763
764            return err;
765        }
766    }
767
768    // Note that we must set the player's new SurfaceTexture before
769    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
770    // on the disconnected ANW, which may result in errors.
771    status_t err = p->setVideoSurfaceTexture(surfaceTexture);
772
773    disconnectNativeWindow();
774
775    mConnectedWindow = anw;
776
777    if (err == OK) {
778        mConnectedWindowBinder = binder;
779    } else {
780        disconnectNativeWindow();
781    }
782
783    return err;
784}
785
786status_t MediaPlayerService::Client::invoke(const Parcel& request,
787                                            Parcel *reply)
788{
789    sp<MediaPlayerBase> p = getPlayer();
790    if (p == NULL) return UNKNOWN_ERROR;
791    return p->invoke(request, reply);
792}
793
794// This call doesn't need to access the native player.
795status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
796{
797    status_t status;
798    media::Metadata::Filter allow, drop;
799
800    if (unmarshallFilter(filter, &allow, &status) &&
801        unmarshallFilter(filter, &drop, &status)) {
802        Mutex::Autolock lock(mLock);
803
804        mMetadataAllow = allow;
805        mMetadataDrop = drop;
806    }
807    return status;
808}
809
810status_t MediaPlayerService::Client::getMetadata(
811        bool update_only, bool apply_filter, Parcel *reply)
812{
813    sp<MediaPlayerBase> player = getPlayer();
814    if (player == 0) return UNKNOWN_ERROR;
815
816    status_t status;
817    // Placeholder for the return code, updated by the caller.
818    reply->writeInt32(-1);
819
820    media::Metadata::Filter ids;
821
822    // We don't block notifications while we fetch the data. We clear
823    // mMetadataUpdated first so we don't lose notifications happening
824    // during the rest of this call.
825    {
826        Mutex::Autolock lock(mLock);
827        if (update_only) {
828            ids = mMetadataUpdated;
829        }
830        mMetadataUpdated.clear();
831    }
832
833    media::Metadata metadata(reply);
834
835    metadata.appendHeader();
836    status = player->getMetadata(ids, reply);
837
838    if (status != OK) {
839        metadata.resetParcel();
840        ALOGE("getMetadata failed %d", status);
841        return status;
842    }
843
844    // FIXME: Implement filtering on the result. Not critical since
845    // filtering takes place on the update notifications already. This
846    // would be when all the metadata are fetch and a filter is set.
847
848    // Everything is fine, update the metadata length.
849    metadata.updateLength();
850    return OK;
851}
852
853status_t MediaPlayerService::Client::prepareAsync()
854{
855    ALOGV("[%d] prepareAsync", mConnId);
856    sp<MediaPlayerBase> p = getPlayer();
857    if (p == 0) return UNKNOWN_ERROR;
858    status_t ret = p->prepareAsync();
859#if CALLBACK_ANTAGONIZER
860    ALOGD("start Antagonizer");
861    if (ret == NO_ERROR) mAntagonizer->start();
862#endif
863    return ret;
864}
865
866status_t MediaPlayerService::Client::start()
867{
868    ALOGV("[%d] start", mConnId);
869    sp<MediaPlayerBase> p = getPlayer();
870    if (p == 0) return UNKNOWN_ERROR;
871    p->setLooping(mLoop);
872    return p->start();
873}
874
875status_t MediaPlayerService::Client::stop()
876{
877    ALOGV("[%d] stop", mConnId);
878    sp<MediaPlayerBase> p = getPlayer();
879    if (p == 0) return UNKNOWN_ERROR;
880    return p->stop();
881}
882
883status_t MediaPlayerService::Client::pause()
884{
885    ALOGV("[%d] pause", mConnId);
886    sp<MediaPlayerBase> p = getPlayer();
887    if (p == 0) return UNKNOWN_ERROR;
888    return p->pause();
889}
890
891status_t MediaPlayerService::Client::isPlaying(bool* state)
892{
893    *state = false;
894    sp<MediaPlayerBase> p = getPlayer();
895    if (p == 0) return UNKNOWN_ERROR;
896    *state = p->isPlaying();
897    ALOGV("[%d] isPlaying: %d", mConnId, *state);
898    return NO_ERROR;
899}
900
901status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
902{
903    ALOGV("getCurrentPosition");
904    sp<MediaPlayerBase> p = getPlayer();
905    if (p == 0) return UNKNOWN_ERROR;
906    status_t ret = p->getCurrentPosition(msec);
907    if (ret == NO_ERROR) {
908        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
909    } else {
910        ALOGE("getCurrentPosition returned %d", ret);
911    }
912    return ret;
913}
914
915status_t MediaPlayerService::Client::getDuration(int *msec)
916{
917    ALOGV("getDuration");
918    sp<MediaPlayerBase> p = getPlayer();
919    if (p == 0) return UNKNOWN_ERROR;
920    status_t ret = p->getDuration(msec);
921    if (ret == NO_ERROR) {
922        ALOGV("[%d] getDuration = %d", mConnId, *msec);
923    } else {
924        ALOGE("getDuration returned %d", ret);
925    }
926    return ret;
927}
928
929status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
930    ALOGV("setNextPlayer");
931    Mutex::Autolock l(mLock);
932    sp<Client> c = static_cast<Client*>(player.get());
933    mNextClient = c;
934    if (mAudioOutput != NULL && c != NULL) {
935        mAudioOutput->setNextOutput(c->mAudioOutput);
936    } else {
937        ALOGE("no current audio output");
938    }
939    return OK;
940}
941
942
943status_t MediaPlayerService::Client::seekTo(int msec)
944{
945    ALOGV("[%d] seekTo(%d)", mConnId, msec);
946    sp<MediaPlayerBase> p = getPlayer();
947    if (p == 0) return UNKNOWN_ERROR;
948    return p->seekTo(msec);
949}
950
951status_t MediaPlayerService::Client::reset()
952{
953    ALOGV("[%d] reset", mConnId);
954    mRetransmitEndpointValid = false;
955    sp<MediaPlayerBase> p = getPlayer();
956    if (p == 0) return UNKNOWN_ERROR;
957    return p->reset();
958}
959
960status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
961{
962    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
963    // TODO: for hardware output, call player instead
964    Mutex::Autolock l(mLock);
965    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
966    return NO_ERROR;
967}
968
969status_t MediaPlayerService::Client::setLooping(int loop)
970{
971    ALOGV("[%d] setLooping(%d)", mConnId, loop);
972    mLoop = loop;
973    sp<MediaPlayerBase> p = getPlayer();
974    if (p != 0) return p->setLooping(loop);
975    return NO_ERROR;
976}
977
978status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
979{
980    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
981
982    // for hardware output, call player instead
983    sp<MediaPlayerBase> p = getPlayer();
984    {
985      Mutex::Autolock l(mLock);
986      if (p != 0 && p->hardwareOutput()) {
987          MediaPlayerHWInterface* hwp =
988                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
989          return hwp->setVolume(leftVolume, rightVolume);
990      } else {
991          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
992          return NO_ERROR;
993      }
994    }
995
996    return NO_ERROR;
997}
998
999status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1000{
1001    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1002    Mutex::Autolock l(mLock);
1003    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1004    return NO_ERROR;
1005}
1006
1007status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1008{
1009    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1010    Mutex::Autolock l(mLock);
1011    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1012    return NO_ERROR;
1013}
1014
1015status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1016    ALOGV("[%d] setParameter(%d)", mConnId, key);
1017    sp<MediaPlayerBase> p = getPlayer();
1018    if (p == 0) return UNKNOWN_ERROR;
1019    return p->setParameter(key, request);
1020}
1021
1022status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1023    ALOGV("[%d] getParameter(%d)", mConnId, key);
1024    sp<MediaPlayerBase> p = getPlayer();
1025    if (p == 0) return UNKNOWN_ERROR;
1026    return p->getParameter(key, reply);
1027}
1028
1029status_t MediaPlayerService::Client::setRetransmitEndpoint(
1030        const struct sockaddr_in* endpoint) {
1031
1032    if (NULL != endpoint) {
1033        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1034        uint16_t p = ntohs(endpoint->sin_port);
1035        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1036                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1037    } else {
1038        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1039    }
1040
1041    sp<MediaPlayerBase> p = getPlayer();
1042
1043    // Right now, the only valid time to set a retransmit endpoint is before
1044    // player selection has been made (since the presence or absence of a
1045    // retransmit endpoint is going to determine which player is selected during
1046    // setDataSource).
1047    if (p != 0) return INVALID_OPERATION;
1048
1049    if (NULL != endpoint) {
1050        mRetransmitEndpoint = *endpoint;
1051        mRetransmitEndpointValid = true;
1052    } else {
1053        mRetransmitEndpointValid = false;
1054    }
1055
1056    return NO_ERROR;
1057}
1058
1059status_t MediaPlayerService::Client::getRetransmitEndpoint(
1060        struct sockaddr_in* endpoint)
1061{
1062    if (NULL == endpoint)
1063        return BAD_VALUE;
1064
1065    sp<MediaPlayerBase> p = getPlayer();
1066
1067    if (p != NULL)
1068        return p->getRetransmitEndpoint(endpoint);
1069
1070    if (!mRetransmitEndpointValid)
1071        return NO_INIT;
1072
1073    *endpoint = mRetransmitEndpoint;
1074
1075    return NO_ERROR;
1076}
1077
1078void MediaPlayerService::Client::notify(
1079        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1080{
1081    Client* client = static_cast<Client*>(cookie);
1082    if (client == NULL) {
1083        return;
1084    }
1085
1086    sp<IMediaPlayerClient> c;
1087    {
1088        Mutex::Autolock l(client->mLock);
1089        c = client->mClient;
1090        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1091            if (client->mAudioOutput != NULL)
1092                client->mAudioOutput->switchToNextOutput();
1093            client->mNextClient->start();
1094            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1095        }
1096    }
1097
1098    if (MEDIA_INFO == msg &&
1099        MEDIA_INFO_METADATA_UPDATE == ext1) {
1100        const media::Metadata::Type metadata_type = ext2;
1101
1102        if(client->shouldDropMetadata(metadata_type)) {
1103            return;
1104        }
1105
1106        // Update the list of metadata that have changed. getMetadata
1107        // also access mMetadataUpdated and clears it.
1108        client->addNewMetadataUpdate(metadata_type);
1109    }
1110
1111    if (c != NULL) {
1112        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1113        c->notify(msg, ext1, ext2, obj);
1114    }
1115}
1116
1117
1118bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1119{
1120    Mutex::Autolock lock(mLock);
1121
1122    if (findMetadata(mMetadataDrop, code)) {
1123        return true;
1124    }
1125
1126    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1127        return false;
1128    } else {
1129        return true;
1130    }
1131}
1132
1133
1134void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1135    Mutex::Autolock lock(mLock);
1136    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1137        mMetadataUpdated.add(metadata_type);
1138    }
1139}
1140
1141#if CALLBACK_ANTAGONIZER
1142const int Antagonizer::interval = 10000; // 10 msecs
1143
1144Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1145    mExit(false), mActive(false), mClient(client), mCb(cb)
1146{
1147    createThread(callbackThread, this);
1148}
1149
1150void Antagonizer::kill()
1151{
1152    Mutex::Autolock _l(mLock);
1153    mActive = false;
1154    mExit = true;
1155    mCondition.wait(mLock);
1156}
1157
1158int Antagonizer::callbackThread(void* user)
1159{
1160    ALOGD("Antagonizer started");
1161    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1162    while (!p->mExit) {
1163        if (p->mActive) {
1164            ALOGV("send event");
1165            p->mCb(p->mClient, 0, 0, 0);
1166        }
1167        usleep(interval);
1168    }
1169    Mutex::Autolock _l(p->mLock);
1170    p->mCondition.signal();
1171    ALOGD("Antagonizer stopped");
1172    return 0;
1173}
1174#endif
1175
1176static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1177
1178sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1179{
1180    ALOGV("decode(%s)", url);
1181    sp<MemoryBase> mem;
1182    sp<MediaPlayerBase> player;
1183
1184    // Protect our precious, precious DRMd ringtones by only allowing
1185    // decoding of http, but not filesystem paths or content Uris.
1186    // If the application wants to decode those, it should open a
1187    // filedescriptor for them and use that.
1188    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1189        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1190        return mem;
1191    }
1192
1193    player_type playerType =
1194        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1195    ALOGV("player type = %d", playerType);
1196
1197    // create the right type of player
1198    sp<AudioCache> cache = new AudioCache(url);
1199    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1200    if (player == NULL) goto Exit;
1201    if (player->hardwareOutput()) goto Exit;
1202
1203    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1204
1205    // set data source
1206    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1207
1208    ALOGV("prepare");
1209    player->prepareAsync();
1210
1211    ALOGV("wait for prepare");
1212    if (cache->wait() != NO_ERROR) goto Exit;
1213
1214    ALOGV("start");
1215    player->start();
1216
1217    ALOGV("wait for playback complete");
1218    cache->wait();
1219    // in case of error, return what was successfully decoded.
1220    if (cache->size() == 0) {
1221        goto Exit;
1222    }
1223
1224    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1225    *pSampleRate = cache->sampleRate();
1226    *pNumChannels = cache->channelCount();
1227    *pFormat = cache->format();
1228    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1229
1230Exit:
1231    if (player != 0) player->reset();
1232    return mem;
1233}
1234
1235sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1236{
1237    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1238    sp<MemoryBase> mem;
1239    sp<MediaPlayerBase> player;
1240
1241    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1242                                                               fd,
1243                                                               offset,
1244                                                               length);
1245    ALOGV("player type = %d", playerType);
1246
1247    // create the right type of player
1248    sp<AudioCache> cache = new AudioCache("decode_fd");
1249    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1250    if (player == NULL) goto Exit;
1251    if (player->hardwareOutput()) goto Exit;
1252
1253    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1254
1255    // set data source
1256    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1257
1258    ALOGV("prepare");
1259    player->prepareAsync();
1260
1261    ALOGV("wait for prepare");
1262    if (cache->wait() != NO_ERROR) goto Exit;
1263
1264    ALOGV("start");
1265    player->start();
1266
1267    ALOGV("wait for playback complete");
1268    cache->wait();
1269    // in case of error, return what was successfully decoded.
1270    if (cache->size() == 0) {
1271        goto Exit;
1272    }
1273
1274    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1275    *pSampleRate = cache->sampleRate();
1276    *pNumChannels = cache->channelCount();
1277    *pFormat = cache->format();
1278    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1279
1280Exit:
1281    if (player != 0) player->reset();
1282    ::close(fd);
1283    return mem;
1284}
1285
1286
1287#undef LOG_TAG
1288#define LOG_TAG "AudioSink"
1289MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1290    : mCallback(NULL),
1291      mCallbackCookie(NULL),
1292      mCallbackData(NULL),
1293      mBytesWritten(0),
1294      mSessionId(sessionId),
1295      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1296    ALOGV("AudioOutput(%d)", sessionId);
1297    mTrack = 0;
1298    mRecycledTrack = 0;
1299    mStreamType = AUDIO_STREAM_MUSIC;
1300    mLeftVolume = 1.0;
1301    mRightVolume = 1.0;
1302    mPlaybackRatePermille = 1000;
1303    mSampleRateHz = 0;
1304    mMsecsPerFrame = 0;
1305    mAuxEffectId = 0;
1306    mSendLevel = 0.0;
1307    setMinBufferCount();
1308}
1309
1310MediaPlayerService::AudioOutput::~AudioOutput()
1311{
1312    close();
1313    delete mRecycledTrack;
1314    delete mCallbackData;
1315}
1316
1317void MediaPlayerService::AudioOutput::setMinBufferCount()
1318{
1319    char value[PROPERTY_VALUE_MAX];
1320    if (property_get("ro.kernel.qemu", value, 0)) {
1321        mIsOnEmulator = true;
1322        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1323    }
1324}
1325
1326bool MediaPlayerService::AudioOutput::isOnEmulator()
1327{
1328    setMinBufferCount();
1329    return mIsOnEmulator;
1330}
1331
1332int MediaPlayerService::AudioOutput::getMinBufferCount()
1333{
1334    setMinBufferCount();
1335    return mMinBufferCount;
1336}
1337
1338ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1339{
1340    if (mTrack == 0) return NO_INIT;
1341    return mTrack->frameCount() * frameSize();
1342}
1343
1344ssize_t MediaPlayerService::AudioOutput::frameCount() const
1345{
1346    if (mTrack == 0) return NO_INIT;
1347    return mTrack->frameCount();
1348}
1349
1350ssize_t MediaPlayerService::AudioOutput::channelCount() const
1351{
1352    if (mTrack == 0) return NO_INIT;
1353    return mTrack->channelCount();
1354}
1355
1356ssize_t MediaPlayerService::AudioOutput::frameSize() const
1357{
1358    if (mTrack == 0) return NO_INIT;
1359    return mTrack->frameSize();
1360}
1361
1362uint32_t MediaPlayerService::AudioOutput::latency () const
1363{
1364    if (mTrack == 0) return 0;
1365    return mTrack->latency();
1366}
1367
1368float MediaPlayerService::AudioOutput::msecsPerFrame() const
1369{
1370    return mMsecsPerFrame;
1371}
1372
1373status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1374{
1375    if (mTrack == 0) return NO_INIT;
1376    return mTrack->getPosition(position);
1377}
1378
1379status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1380{
1381    if (mTrack == 0) return NO_INIT;
1382    *frameswritten = mBytesWritten / frameSize();
1383    return OK;
1384}
1385
1386status_t MediaPlayerService::AudioOutput::open(
1387        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1388        audio_format_t format, int bufferCount,
1389        AudioCallback cb, void *cookie,
1390        audio_output_flags_t flags)
1391{
1392    mCallback = cb;
1393    mCallbackCookie = cookie;
1394
1395    // Check argument "bufferCount" against the mininum buffer count
1396    if (bufferCount < mMinBufferCount) {
1397        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1398        bufferCount = mMinBufferCount;
1399
1400    }
1401    ALOGV("open(%u, %d, 0x%x, %d, %d, %d)", sampleRate, channelCount, channelMask,
1402            format, bufferCount, mSessionId);
1403    int afSampleRate;
1404    int afFrameCount;
1405    uint32_t frameCount;
1406
1407    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1408        return NO_INIT;
1409    }
1410    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1411        return NO_INIT;
1412    }
1413
1414    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1415
1416    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1417        channelMask = audio_channel_out_mask_from_count(channelCount);
1418        if (0 == channelMask) {
1419            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1420            return NO_INIT;
1421        }
1422    }
1423
1424    AudioTrack *t;
1425    CallbackData *newcbd = NULL;
1426    if (mCallback != NULL) {
1427        newcbd = new CallbackData(this);
1428        t = new AudioTrack(
1429                mStreamType,
1430                sampleRate,
1431                format,
1432                channelMask,
1433                frameCount,
1434                flags,
1435                CallbackWrapper,
1436                newcbd,
1437                0,  // notification frames
1438                mSessionId);
1439    } else {
1440        t = new AudioTrack(
1441                mStreamType,
1442                sampleRate,
1443                format,
1444                channelMask,
1445                frameCount,
1446                flags,
1447                NULL,
1448                NULL,
1449                0,
1450                mSessionId);
1451    }
1452
1453    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1454        ALOGE("Unable to create audio track");
1455        delete t;
1456        delete newcbd;
1457        return NO_INIT;
1458    }
1459
1460
1461    if (mRecycledTrack) {
1462        // check if the existing track can be reused as-is, or if a new track needs to be created.
1463
1464        bool reuse = true;
1465        if ((mCallbackData == NULL && mCallback != NULL) ||
1466                (mCallbackData != NULL && mCallback == NULL)) {
1467            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1468            ALOGV("can't chain callback and write");
1469            reuse = false;
1470        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1471                (mRecycledTrack->channelCount() != channelCount) ||
1472                (mRecycledTrack->frameCount() != t->frameCount())) {
1473            ALOGV("samplerate, channelcount or framecount differ: %d/%d Hz, %d/%d ch, %d/%d frames",
1474                  mRecycledTrack->getSampleRate(), sampleRate,
1475                  mRecycledTrack->channelCount(), channelCount,
1476                  mRecycledTrack->frameCount(), t->frameCount());
1477            reuse = false;
1478        } else if (flags != mFlags) {
1479            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1480            reuse = false;
1481        }
1482        if (reuse) {
1483            ALOGV("chaining to next output");
1484            close();
1485            mTrack = mRecycledTrack;
1486            mRecycledTrack = NULL;
1487            if (mCallbackData != NULL) {
1488                mCallbackData->setOutput(this);
1489            }
1490            delete t;
1491            delete newcbd;
1492            return OK;
1493        }
1494
1495        // if we're not going to reuse the track, unblock and flush it
1496        if (mCallbackData != NULL) {
1497            mCallbackData->setOutput(NULL);
1498            mCallbackData->endTrackSwitch();
1499        }
1500        mRecycledTrack->flush();
1501        delete mRecycledTrack;
1502        mRecycledTrack = NULL;
1503        delete mCallbackData;
1504        mCallbackData = NULL;
1505        close();
1506    }
1507
1508    mCallbackData = newcbd;
1509    ALOGV("setVolume");
1510    t->setVolume(mLeftVolume, mRightVolume);
1511
1512    mSampleRateHz = sampleRate;
1513    mFlags = flags;
1514    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1515    uint32_t pos;
1516    if (t->getPosition(&pos) == OK) {
1517        mBytesWritten = uint64_t(pos) * t->frameSize();
1518    }
1519    mTrack = t;
1520
1521    status_t res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1522    if (res != NO_ERROR) {
1523        return res;
1524    }
1525    t->setAuxEffectSendLevel(mSendLevel);
1526    return t->attachAuxEffect(mAuxEffectId);;
1527}
1528
1529void MediaPlayerService::AudioOutput::start()
1530{
1531    ALOGV("start");
1532    if (mCallbackData != NULL) {
1533        mCallbackData->endTrackSwitch();
1534    }
1535    if (mTrack) {
1536        mTrack->setVolume(mLeftVolume, mRightVolume);
1537        mTrack->setAuxEffectSendLevel(mSendLevel);
1538        mTrack->start();
1539    }
1540}
1541
1542void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1543    mNextOutput = nextOutput;
1544}
1545
1546
1547void MediaPlayerService::AudioOutput::switchToNextOutput() {
1548    ALOGV("switchToNextOutput");
1549    if (mNextOutput != NULL) {
1550        if (mCallbackData != NULL) {
1551            mCallbackData->beginTrackSwitch();
1552        }
1553        delete mNextOutput->mCallbackData;
1554        mNextOutput->mCallbackData = mCallbackData;
1555        mCallbackData = NULL;
1556        mNextOutput->mRecycledTrack = mTrack;
1557        mTrack = NULL;
1558        mNextOutput->mSampleRateHz = mSampleRateHz;
1559        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1560        mNextOutput->mBytesWritten = mBytesWritten;
1561        mNextOutput->mFlags = mFlags;
1562    }
1563}
1564
1565ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1566{
1567    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1568
1569    //ALOGV("write(%p, %u)", buffer, size);
1570    if (mTrack) {
1571        ssize_t ret = mTrack->write(buffer, size);
1572        mBytesWritten += ret;
1573        return ret;
1574    }
1575    return NO_INIT;
1576}
1577
1578void MediaPlayerService::AudioOutput::stop()
1579{
1580    ALOGV("stop");
1581    if (mTrack) mTrack->stop();
1582}
1583
1584void MediaPlayerService::AudioOutput::flush()
1585{
1586    ALOGV("flush");
1587    if (mTrack) mTrack->flush();
1588}
1589
1590void MediaPlayerService::AudioOutput::pause()
1591{
1592    ALOGV("pause");
1593    if (mTrack) mTrack->pause();
1594}
1595
1596void MediaPlayerService::AudioOutput::close()
1597{
1598    ALOGV("close");
1599    delete mTrack;
1600    mTrack = 0;
1601}
1602
1603void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1604{
1605    ALOGV("setVolume(%f, %f)", left, right);
1606    mLeftVolume = left;
1607    mRightVolume = right;
1608    if (mTrack) {
1609        mTrack->setVolume(left, right);
1610    }
1611}
1612
1613status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1614{
1615    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1616    status_t res = NO_ERROR;
1617    if (mTrack) {
1618        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1619    } else {
1620        res = NO_INIT;
1621    }
1622    mPlaybackRatePermille = ratePermille;
1623    if (mSampleRateHz != 0) {
1624        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1625    }
1626    return res;
1627}
1628
1629status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1630{
1631    ALOGV("setAuxEffectSendLevel(%f)", level);
1632    mSendLevel = level;
1633    if (mTrack) {
1634        return mTrack->setAuxEffectSendLevel(level);
1635    }
1636    return NO_ERROR;
1637}
1638
1639status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1640{
1641    ALOGV("attachAuxEffect(%d)", effectId);
1642    mAuxEffectId = effectId;
1643    if (mTrack) {
1644        return mTrack->attachAuxEffect(effectId);
1645    }
1646    return NO_ERROR;
1647}
1648
1649// static
1650void MediaPlayerService::AudioOutput::CallbackWrapper(
1651        int event, void *cookie, void *info) {
1652    //ALOGV("callbackwrapper");
1653    if (event != AudioTrack::EVENT_MORE_DATA) {
1654        return;
1655    }
1656
1657    CallbackData *data = (CallbackData*)cookie;
1658    data->lock();
1659    AudioOutput *me = data->getOutput();
1660    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1661    if (me == NULL) {
1662        // no output set, likely because the track was scheduled to be reused
1663        // by another player, but the format turned out to be incompatible.
1664        data->unlock();
1665        buffer->size = 0;
1666        return;
1667    }
1668
1669    size_t actualSize = (*me->mCallback)(
1670            me, buffer->raw, buffer->size, me->mCallbackCookie);
1671
1672    if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1673        // We've reached EOS but the audio track is not stopped yet,
1674        // keep playing silence.
1675
1676        memset(buffer->raw, 0, buffer->size);
1677        actualSize = buffer->size;
1678    }
1679
1680    buffer->size = actualSize;
1681    data->unlock();
1682}
1683
1684int MediaPlayerService::AudioOutput::getSessionId() const
1685{
1686    return mSessionId;
1687}
1688
1689#undef LOG_TAG
1690#define LOG_TAG "AudioCache"
1691MediaPlayerService::AudioCache::AudioCache(const char* name) :
1692    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1693    mError(NO_ERROR), mCommandComplete(false)
1694{
1695    // create ashmem heap
1696    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1697}
1698
1699uint32_t MediaPlayerService::AudioCache::latency () const
1700{
1701    return 0;
1702}
1703
1704float MediaPlayerService::AudioCache::msecsPerFrame() const
1705{
1706    return mMsecsPerFrame;
1707}
1708
1709status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1710{
1711    if (position == 0) return BAD_VALUE;
1712    *position = mSize;
1713    return NO_ERROR;
1714}
1715
1716status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1717{
1718    if (written == 0) return BAD_VALUE;
1719    *written = mSize;
1720    return NO_ERROR;
1721}
1722
1723////////////////////////////////////////////////////////////////////////////////
1724
1725struct CallbackThread : public Thread {
1726    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1727                   MediaPlayerBase::AudioSink::AudioCallback cb,
1728                   void *cookie);
1729
1730protected:
1731    virtual ~CallbackThread();
1732
1733    virtual bool threadLoop();
1734
1735private:
1736    wp<MediaPlayerBase::AudioSink> mSink;
1737    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1738    void *mCookie;
1739    void *mBuffer;
1740    size_t mBufferSize;
1741
1742    CallbackThread(const CallbackThread &);
1743    CallbackThread &operator=(const CallbackThread &);
1744};
1745
1746CallbackThread::CallbackThread(
1747        const wp<MediaPlayerBase::AudioSink> &sink,
1748        MediaPlayerBase::AudioSink::AudioCallback cb,
1749        void *cookie)
1750    : mSink(sink),
1751      mCallback(cb),
1752      mCookie(cookie),
1753      mBuffer(NULL),
1754      mBufferSize(0) {
1755}
1756
1757CallbackThread::~CallbackThread() {
1758    if (mBuffer) {
1759        free(mBuffer);
1760        mBuffer = NULL;
1761    }
1762}
1763
1764bool CallbackThread::threadLoop() {
1765    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1766    if (sink == NULL) {
1767        return false;
1768    }
1769
1770    if (mBuffer == NULL) {
1771        mBufferSize = sink->bufferSize();
1772        mBuffer = malloc(mBufferSize);
1773    }
1774
1775    size_t actualSize =
1776        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1777
1778    if (actualSize > 0) {
1779        sink->write(mBuffer, actualSize);
1780    }
1781
1782    return true;
1783}
1784
1785////////////////////////////////////////////////////////////////////////////////
1786
1787status_t MediaPlayerService::AudioCache::open(
1788        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1789        audio_format_t format, int bufferCount,
1790        AudioCallback cb, void *cookie, audio_output_flags_t flags)
1791{
1792    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
1793    if (mHeap->getHeapID() < 0) {
1794        return NO_INIT;
1795    }
1796
1797    mSampleRate = sampleRate;
1798    mChannelCount = (uint16_t)channelCount;
1799    mFormat = format;
1800    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1801
1802    if (cb != NULL) {
1803        mCallbackThread = new CallbackThread(this, cb, cookie);
1804    }
1805    return NO_ERROR;
1806}
1807
1808void MediaPlayerService::AudioCache::start() {
1809    if (mCallbackThread != NULL) {
1810        mCallbackThread->run("AudioCache callback");
1811    }
1812}
1813
1814void MediaPlayerService::AudioCache::stop() {
1815    if (mCallbackThread != NULL) {
1816        mCallbackThread->requestExitAndWait();
1817    }
1818}
1819
1820ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1821{
1822    ALOGV("write(%p, %u)", buffer, size);
1823    if ((buffer == 0) || (size == 0)) return size;
1824
1825    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1826    if (p == NULL) return NO_INIT;
1827    p += mSize;
1828    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1829    if (mSize + size > mHeap->getSize()) {
1830        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1831        size = mHeap->getSize() - mSize;
1832    }
1833    memcpy(p, buffer, size);
1834    mSize += size;
1835    return size;
1836}
1837
1838// call with lock held
1839status_t MediaPlayerService::AudioCache::wait()
1840{
1841    Mutex::Autolock lock(mLock);
1842    while (!mCommandComplete) {
1843        mSignal.wait(mLock);
1844    }
1845    mCommandComplete = false;
1846
1847    if (mError == NO_ERROR) {
1848        ALOGV("wait - success");
1849    } else {
1850        ALOGV("wait - error");
1851    }
1852    return mError;
1853}
1854
1855void MediaPlayerService::AudioCache::notify(
1856        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1857{
1858    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1859    AudioCache* p = static_cast<AudioCache*>(cookie);
1860
1861    // ignore buffering messages
1862    switch (msg)
1863    {
1864    case MEDIA_ERROR:
1865        ALOGE("Error %d, %d occurred", ext1, ext2);
1866        p->mError = ext1;
1867        break;
1868    case MEDIA_PREPARED:
1869        ALOGV("prepared");
1870        break;
1871    case MEDIA_PLAYBACK_COMPLETE:
1872        ALOGV("playback complete");
1873        break;
1874    default:
1875        ALOGV("ignored");
1876        return;
1877    }
1878
1879    // wake up thread
1880    Mutex::Autolock lock(p->mLock);
1881    p->mCommandComplete = true;
1882    p->mSignal.signal();
1883}
1884
1885int MediaPlayerService::AudioCache::getSessionId() const
1886{
1887    return 0;
1888}
1889
1890void MediaPlayerService::addBatteryData(uint32_t params)
1891{
1892    Mutex::Autolock lock(mLock);
1893
1894    int32_t time = systemTime() / 1000000L;
1895
1896    // change audio output devices. This notification comes from AudioFlinger
1897    if ((params & kBatteryDataSpeakerOn)
1898            || (params & kBatteryDataOtherAudioDeviceOn)) {
1899
1900        int deviceOn[NUM_AUDIO_DEVICES];
1901        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1902            deviceOn[i] = 0;
1903        }
1904
1905        if ((params & kBatteryDataSpeakerOn)
1906                && (params & kBatteryDataOtherAudioDeviceOn)) {
1907            deviceOn[SPEAKER_AND_OTHER] = 1;
1908        } else if (params & kBatteryDataSpeakerOn) {
1909            deviceOn[SPEAKER] = 1;
1910        } else {
1911            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1912        }
1913
1914        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1915            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1916
1917                if (mBatteryAudio.refCount > 0) { // if playing audio
1918                    if (!deviceOn[i]) {
1919                        mBatteryAudio.lastTime[i] += time;
1920                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1921                        mBatteryAudio.lastTime[i] = 0;
1922                    } else {
1923                        mBatteryAudio.lastTime[i] = 0 - time;
1924                    }
1925                }
1926
1927                mBatteryAudio.deviceOn[i] = deviceOn[i];
1928            }
1929        }
1930        return;
1931    }
1932
1933    // an sudio stream is started
1934    if (params & kBatteryDataAudioFlingerStart) {
1935        // record the start time only if currently no other audio
1936        // is being played
1937        if (mBatteryAudio.refCount == 0) {
1938            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1939                if (mBatteryAudio.deviceOn[i]) {
1940                    mBatteryAudio.lastTime[i] -= time;
1941                }
1942            }
1943        }
1944
1945        mBatteryAudio.refCount ++;
1946        return;
1947
1948    } else if (params & kBatteryDataAudioFlingerStop) {
1949        if (mBatteryAudio.refCount <= 0) {
1950            ALOGW("Battery track warning: refCount is <= 0");
1951            return;
1952        }
1953
1954        // record the stop time only if currently this is the only
1955        // audio being played
1956        if (mBatteryAudio.refCount == 1) {
1957            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1958                if (mBatteryAudio.deviceOn[i]) {
1959                    mBatteryAudio.lastTime[i] += time;
1960                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1961                    mBatteryAudio.lastTime[i] = 0;
1962                }
1963            }
1964        }
1965
1966        mBatteryAudio.refCount --;
1967        return;
1968    }
1969
1970    int uid = IPCThreadState::self()->getCallingUid();
1971    if (uid == AID_MEDIA) {
1972        return;
1973    }
1974    int index = mBatteryData.indexOfKey(uid);
1975
1976    if (index < 0) { // create a new entry for this UID
1977        BatteryUsageInfo info;
1978        info.audioTotalTime = 0;
1979        info.videoTotalTime = 0;
1980        info.audioLastTime = 0;
1981        info.videoLastTime = 0;
1982        info.refCount = 0;
1983
1984        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1985            ALOGE("Battery track error: no memory for new app");
1986            return;
1987        }
1988    }
1989
1990    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1991
1992    if (params & kBatteryDataCodecStarted) {
1993        if (params & kBatteryDataTrackAudio) {
1994            info.audioLastTime -= time;
1995            info.refCount ++;
1996        }
1997        if (params & kBatteryDataTrackVideo) {
1998            info.videoLastTime -= time;
1999            info.refCount ++;
2000        }
2001    } else {
2002        if (info.refCount == 0) {
2003            ALOGW("Battery track warning: refCount is already 0");
2004            return;
2005        } else if (info.refCount < 0) {
2006            ALOGE("Battery track error: refCount < 0");
2007            mBatteryData.removeItem(uid);
2008            return;
2009        }
2010
2011        if (params & kBatteryDataTrackAudio) {
2012            info.audioLastTime += time;
2013            info.refCount --;
2014        }
2015        if (params & kBatteryDataTrackVideo) {
2016            info.videoLastTime += time;
2017            info.refCount --;
2018        }
2019
2020        // no stream is being played by this UID
2021        if (info.refCount == 0) {
2022            info.audioTotalTime += info.audioLastTime;
2023            info.audioLastTime = 0;
2024            info.videoTotalTime += info.videoLastTime;
2025            info.videoLastTime = 0;
2026        }
2027    }
2028}
2029
2030status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2031    Mutex::Autolock lock(mLock);
2032
2033    // audio output devices usage
2034    int32_t time = systemTime() / 1000000L; //in ms
2035    int32_t totalTime;
2036
2037    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2038        totalTime = mBatteryAudio.totalTime[i];
2039
2040        if (mBatteryAudio.deviceOn[i]
2041            && (mBatteryAudio.lastTime[i] != 0)) {
2042                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2043                totalTime += tmpTime;
2044        }
2045
2046        reply->writeInt32(totalTime);
2047        // reset the total time
2048        mBatteryAudio.totalTime[i] = 0;
2049   }
2050
2051    // codec usage
2052    BatteryUsageInfo info;
2053    int size = mBatteryData.size();
2054
2055    reply->writeInt32(size);
2056    int i = 0;
2057
2058    while (i < size) {
2059        info = mBatteryData.valueAt(i);
2060
2061        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2062        reply->writeInt32(info.audioTotalTime);
2063        reply->writeInt32(info.videoTotalTime);
2064
2065        info.audioTotalTime = 0;
2066        info.videoTotalTime = 0;
2067
2068        // remove the UID entry where no stream is being played
2069        if (info.refCount <= 0) {
2070            mBatteryData.removeItemsAt(i);
2071            size --;
2072            i --;
2073        }
2074        i++;
2075    }
2076    return NO_ERROR;
2077}
2078} // namespace android
2079