MediaPlayerService.cpp revision 5f7e55ea443c80ef8b6173efd1c2551e07309b0a 
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    return new RemoteDisplay(client, iface.string());
287}
288
289status_t MediaPlayerService::enableRemoteDisplay(const char *iface) {
290    Mutex::Autolock autoLock(mLock);
291
292    if (iface != NULL) {
293        if (mRemoteDisplay != NULL) {
294            return INVALID_OPERATION;
295        }
296
297        mRemoteDisplay = new RemoteDisplay(NULL /* client */, iface);
298        return OK;
299    }
300
301    if (mRemoteDisplay != NULL) {
302        mRemoteDisplay->dispose();
303        mRemoteDisplay.clear();
304    }
305
306    return OK;
307}
308
309status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
310{
311    const size_t SIZE = 256;
312    char buffer[SIZE];
313    String8 result;
314
315    result.append(" AudioCache\n");
316    if (mHeap != 0) {
317        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
318                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
319        result.append(buffer);
320    }
321    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
322            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
323    result.append(buffer);
324    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
325            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
326    result.append(buffer);
327    ::write(fd, result.string(), result.size());
328    return NO_ERROR;
329}
330
331status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
332{
333    const size_t SIZE = 256;
334    char buffer[SIZE];
335    String8 result;
336
337    result.append(" AudioOutput\n");
338    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
339            mStreamType, mLeftVolume, mRightVolume);
340    result.append(buffer);
341    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
342            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
343    result.append(buffer);
344    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
345            mAuxEffectId, mSendLevel);
346    result.append(buffer);
347
348    ::write(fd, result.string(), result.size());
349    if (mTrack != 0) {
350        mTrack->dump(fd, args);
351    }
352    return NO_ERROR;
353}
354
355status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
356{
357    const size_t SIZE = 256;
358    char buffer[SIZE];
359    String8 result;
360    result.append(" Client\n");
361    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
362            mPid, mConnId, mStatus, mLoop?"true": "false");
363    result.append(buffer);
364    write(fd, result.string(), result.size());
365    if (mPlayer != NULL) {
366        mPlayer->dump(fd, args);
367    }
368    if (mAudioOutput != 0) {
369        mAudioOutput->dump(fd, args);
370    }
371    write(fd, "\n", 1);
372    return NO_ERROR;
373}
374
375status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
376{
377    const size_t SIZE = 256;
378    char buffer[SIZE];
379    String8 result;
380    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
381        snprintf(buffer, SIZE, "Permission Denial: "
382                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
383                IPCThreadState::self()->getCallingPid(),
384                IPCThreadState::self()->getCallingUid());
385        result.append(buffer);
386    } else {
387        Mutex::Autolock lock(mLock);
388        for (int i = 0, n = mClients.size(); i < n; ++i) {
389            sp<Client> c = mClients[i].promote();
390            if (c != 0) c->dump(fd, args);
391        }
392        if (mMediaRecorderClients.size() == 0) {
393                result.append(" No media recorder client\n\n");
394        } else {
395            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
396                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
397                if (c != 0) {
398                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
399                    result.append(buffer);
400                    write(fd, result.string(), result.size());
401                    result = "\n";
402                    c->dump(fd, args);
403                }
404            }
405        }
406
407        result.append(" Files opened and/or mapped:\n");
408        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
409        FILE *f = fopen(buffer, "r");
410        if (f) {
411            while (!feof(f)) {
412                fgets(buffer, SIZE, f);
413                if (strstr(buffer, " /storage/") ||
414                    strstr(buffer, " /system/sounds/") ||
415                    strstr(buffer, " /data/") ||
416                    strstr(buffer, " /system/media/")) {
417                    result.append("  ");
418                    result.append(buffer);
419                }
420            }
421            fclose(f);
422        } else {
423            result.append("couldn't open ");
424            result.append(buffer);
425            result.append("\n");
426        }
427
428        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
429        DIR *d = opendir(buffer);
430        if (d) {
431            struct dirent *ent;
432            while((ent = readdir(d)) != NULL) {
433                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
434                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
435                    struct stat s;
436                    if (lstat(buffer, &s) == 0) {
437                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
438                            char linkto[256];
439                            int len = readlink(buffer, linkto, sizeof(linkto));
440                            if(len > 0) {
441                                if(len > 255) {
442                                    linkto[252] = '.';
443                                    linkto[253] = '.';
444                                    linkto[254] = '.';
445                                    linkto[255] = 0;
446                                } else {
447                                    linkto[len] = 0;
448                                }
449                                if (strstr(linkto, "/storage/") == linkto ||
450                                    strstr(linkto, "/system/sounds/") == linkto ||
451                                    strstr(linkto, "/data/") == linkto ||
452                                    strstr(linkto, "/system/media/") == linkto) {
453                                    result.append("  ");
454                                    result.append(buffer);
455                                    result.append(" -> ");
456                                    result.append(linkto);
457                                    result.append("\n");
458                                }
459                            }
460                        } else {
461                            result.append("  unexpected type for ");
462                            result.append(buffer);
463                            result.append("\n");
464                        }
465                    }
466                }
467            }
468            closedir(d);
469        } else {
470            result.append("couldn't open ");
471            result.append(buffer);
472            result.append("\n");
473        }
474
475        bool dumpMem = false;
476        for (size_t i = 0; i < args.size(); i++) {
477            if (args[i] == String16("-m")) {
478                dumpMem = true;
479            }
480        }
481        if (dumpMem) {
482            dumpMemoryAddresses(fd);
483        }
484    }
485    write(fd, result.string(), result.size());
486    return NO_ERROR;
487}
488
489void MediaPlayerService::removeClient(wp<Client> client)
490{
491    Mutex::Autolock lock(mLock);
492    mClients.remove(client);
493}
494
495MediaPlayerService::Client::Client(
496        const sp<MediaPlayerService>& service, pid_t pid,
497        int32_t connId, const sp<IMediaPlayerClient>& client,
498        int audioSessionId, uid_t uid)
499{
500    ALOGV("Client(%d) constructor", connId);
501    mPid = pid;
502    mConnId = connId;
503    mService = service;
504    mClient = client;
505    mLoop = false;
506    mStatus = NO_INIT;
507    mAudioSessionId = audioSessionId;
508    mUID = uid;
509    mRetransmitEndpointValid = false;
510
511#if CALLBACK_ANTAGONIZER
512    ALOGD("create Antagonizer");
513    mAntagonizer = new Antagonizer(notify, this);
514#endif
515}
516
517MediaPlayerService::Client::~Client()
518{
519    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
520    mAudioOutput.clear();
521    wp<Client> client(this);
522    disconnect();
523    mService->removeClient(client);
524}
525
526void MediaPlayerService::Client::disconnect()
527{
528    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
529    // grab local reference and clear main reference to prevent future
530    // access to object
531    sp<MediaPlayerBase> p;
532    {
533        Mutex::Autolock l(mLock);
534        p = mPlayer;
535    }
536    mClient.clear();
537
538    mPlayer.clear();
539
540    // clear the notification to prevent callbacks to dead client
541    // and reset the player. We assume the player will serialize
542    // access to itself if necessary.
543    if (p != 0) {
544        p->setNotifyCallback(0, 0);
545#if CALLBACK_ANTAGONIZER
546        ALOGD("kill Antagonizer");
547        mAntagonizer->kill();
548#endif
549        p->reset();
550    }
551
552    disconnectNativeWindow();
553
554    IPCThreadState::self()->flushCommands();
555}
556
557sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
558{
559    // determine if we have the right player type
560    sp<MediaPlayerBase> p = mPlayer;
561    if ((p != NULL) && (p->playerType() != playerType)) {
562        ALOGV("delete player");
563        p.clear();
564    }
565    if (p == NULL) {
566        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
567    }
568
569    if (p != NULL) {
570        p->setUID(mUID);
571    }
572
573    return p;
574}
575
576sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
577        player_type playerType)
578{
579    ALOGV("player type = %d", playerType);
580
581    // create the right type of player
582    sp<MediaPlayerBase> p = createPlayer(playerType);
583    if (p == NULL) {
584        return p;
585    }
586
587    if (!p->hardwareOutput()) {
588        mAudioOutput = new AudioOutput(mAudioSessionId);
589        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
590    }
591
592    return p;
593}
594
595void MediaPlayerService::Client::setDataSource_post(
596        const sp<MediaPlayerBase>& p,
597        status_t status)
598{
599    ALOGV(" setDataSource");
600    mStatus = status;
601    if (mStatus != OK) {
602        ALOGE("  error: %d", mStatus);
603        return;
604    }
605
606    // Set the re-transmission endpoint if one was chosen.
607    if (mRetransmitEndpointValid) {
608        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
609        if (mStatus != NO_ERROR) {
610            ALOGE("setRetransmitEndpoint error: %d", mStatus);
611        }
612    }
613
614    if (mStatus == OK) {
615        mPlayer = p;
616    }
617}
618
619status_t MediaPlayerService::Client::setDataSource(
620        const char *url, const KeyedVector<String8, String8> *headers)
621{
622    ALOGV("setDataSource(%s)", url);
623    if (url == NULL)
624        return UNKNOWN_ERROR;
625
626    if ((strncmp(url, "http://", 7) == 0) ||
627        (strncmp(url, "https://", 8) == 0) ||
628        (strncmp(url, "rtsp://", 7) == 0)) {
629        if (!checkPermission("android.permission.INTERNET")) {
630            return PERMISSION_DENIED;
631        }
632    }
633
634    if (strncmp(url, "content://", 10) == 0) {
635        // get a filedescriptor for the content Uri and
636        // pass it to the setDataSource(fd) method
637
638        String16 url16(url);
639        int fd = android::openContentProviderFile(url16);
640        if (fd < 0)
641        {
642            ALOGE("Couldn't open fd for %s", url);
643            return UNKNOWN_ERROR;
644        }
645        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
646        close(fd);
647        return mStatus;
648    } else {
649        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
650        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
651        if (p == NULL) {
652            return NO_INIT;
653        }
654
655        setDataSource_post(p, p->setDataSource(url, headers));
656        return mStatus;
657    }
658}
659
660status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
661{
662    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
663    struct stat sb;
664    int ret = fstat(fd, &sb);
665    if (ret != 0) {
666        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
667        return UNKNOWN_ERROR;
668    }
669
670    ALOGV("st_dev  = %llu", sb.st_dev);
671    ALOGV("st_mode = %u", sb.st_mode);
672    ALOGV("st_uid  = %lu", sb.st_uid);
673    ALOGV("st_gid  = %lu", sb.st_gid);
674    ALOGV("st_size = %llu", sb.st_size);
675
676    if (offset >= sb.st_size) {
677        ALOGE("offset error");
678        ::close(fd);
679        return UNKNOWN_ERROR;
680    }
681    if (offset + length > sb.st_size) {
682        length = sb.st_size - offset;
683        ALOGV("calculated length = %lld", length);
684    }
685
686    player_type playerType = MediaPlayerFactory::getPlayerType(this,
687                                                               fd,
688                                                               offset,
689                                                               length);
690    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
691    if (p == NULL) {
692        return NO_INIT;
693    }
694
695    // now set data source
696    setDataSource_post(p, p->setDataSource(fd, offset, length));
697    return mStatus;
698}
699
700status_t MediaPlayerService::Client::setDataSource(
701        const sp<IStreamSource> &source) {
702    // create the right type of player
703    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
704    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
705    if (p == NULL) {
706        return NO_INIT;
707    }
708
709    // now set data source
710    setDataSource_post(p, p->setDataSource(source));
711    return mStatus;
712}
713
714void MediaPlayerService::Client::disconnectNativeWindow() {
715    if (mConnectedWindow != NULL) {
716        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
717                NATIVE_WINDOW_API_MEDIA);
718
719        if (err != OK) {
720            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
721                    strerror(-err), err);
722        }
723    }
724    mConnectedWindow.clear();
725}
726
727status_t MediaPlayerService::Client::setVideoSurfaceTexture(
728        const sp<ISurfaceTexture>& surfaceTexture)
729{
730    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, surfaceTexture.get());
731    sp<MediaPlayerBase> p = getPlayer();
732    if (p == 0) return UNKNOWN_ERROR;
733
734    sp<IBinder> binder(surfaceTexture == NULL ? NULL :
735            surfaceTexture->asBinder());
736    if (mConnectedWindowBinder == binder) {
737        return OK;
738    }
739
740    sp<ANativeWindow> anw;
741    if (surfaceTexture != NULL) {
742        anw = new SurfaceTextureClient(surfaceTexture);
743        status_t err = native_window_api_connect(anw.get(),
744                NATIVE_WINDOW_API_MEDIA);
745
746        if (err != OK) {
747            ALOGE("setVideoSurfaceTexture failed: %d", err);
748            // Note that we must do the reset before disconnecting from the ANW.
749            // Otherwise queue/dequeue calls could be made on the disconnected
750            // ANW, which may result in errors.
751            reset();
752
753            disconnectNativeWindow();
754
755            return err;
756        }
757    }
758
759    // Note that we must set the player's new SurfaceTexture before
760    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
761    // on the disconnected ANW, which may result in errors.
762    status_t err = p->setVideoSurfaceTexture(surfaceTexture);
763
764    disconnectNativeWindow();
765
766    mConnectedWindow = anw;
767
768    if (err == OK) {
769        mConnectedWindowBinder = binder;
770    } else {
771        disconnectNativeWindow();
772    }
773
774    return err;
775}
776
777status_t MediaPlayerService::Client::invoke(const Parcel& request,
778                                            Parcel *reply)
779{
780    sp<MediaPlayerBase> p = getPlayer();
781    if (p == NULL) return UNKNOWN_ERROR;
782    return p->invoke(request, reply);
783}
784
785// This call doesn't need to access the native player.
786status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
787{
788    status_t status;
789    media::Metadata::Filter allow, drop;
790
791    if (unmarshallFilter(filter, &allow, &status) &&
792        unmarshallFilter(filter, &drop, &status)) {
793        Mutex::Autolock lock(mLock);
794
795        mMetadataAllow = allow;
796        mMetadataDrop = drop;
797    }
798    return status;
799}
800
801status_t MediaPlayerService::Client::getMetadata(
802        bool update_only, bool apply_filter, Parcel *reply)
803{
804    sp<MediaPlayerBase> player = getPlayer();
805    if (player == 0) return UNKNOWN_ERROR;
806
807    status_t status;
808    // Placeholder for the return code, updated by the caller.
809    reply->writeInt32(-1);
810
811    media::Metadata::Filter ids;
812
813    // We don't block notifications while we fetch the data. We clear
814    // mMetadataUpdated first so we don't lose notifications happening
815    // during the rest of this call.
816    {
817        Mutex::Autolock lock(mLock);
818        if (update_only) {
819            ids = mMetadataUpdated;
820        }
821        mMetadataUpdated.clear();
822    }
823
824    media::Metadata metadata(reply);
825
826    metadata.appendHeader();
827    status = player->getMetadata(ids, reply);
828
829    if (status != OK) {
830        metadata.resetParcel();
831        ALOGE("getMetadata failed %d", status);
832        return status;
833    }
834
835    // FIXME: Implement filtering on the result. Not critical since
836    // filtering takes place on the update notifications already. This
837    // would be when all the metadata are fetch and a filter is set.
838
839    // Everything is fine, update the metadata length.
840    metadata.updateLength();
841    return OK;
842}
843
844status_t MediaPlayerService::Client::prepareAsync()
845{
846    ALOGV("[%d] prepareAsync", mConnId);
847    sp<MediaPlayerBase> p = getPlayer();
848    if (p == 0) return UNKNOWN_ERROR;
849    status_t ret = p->prepareAsync();
850#if CALLBACK_ANTAGONIZER
851    ALOGD("start Antagonizer");
852    if (ret == NO_ERROR) mAntagonizer->start();
853#endif
854    return ret;
855}
856
857status_t MediaPlayerService::Client::start()
858{
859    ALOGV("[%d] start", mConnId);
860    sp<MediaPlayerBase> p = getPlayer();
861    if (p == 0) return UNKNOWN_ERROR;
862    p->setLooping(mLoop);
863    return p->start();
864}
865
866status_t MediaPlayerService::Client::stop()
867{
868    ALOGV("[%d] stop", mConnId);
869    sp<MediaPlayerBase> p = getPlayer();
870    if (p == 0) return UNKNOWN_ERROR;
871    return p->stop();
872}
873
874status_t MediaPlayerService::Client::pause()
875{
876    ALOGV("[%d] pause", mConnId);
877    sp<MediaPlayerBase> p = getPlayer();
878    if (p == 0) return UNKNOWN_ERROR;
879    return p->pause();
880}
881
882status_t MediaPlayerService::Client::isPlaying(bool* state)
883{
884    *state = false;
885    sp<MediaPlayerBase> p = getPlayer();
886    if (p == 0) return UNKNOWN_ERROR;
887    *state = p->isPlaying();
888    ALOGV("[%d] isPlaying: %d", mConnId, *state);
889    return NO_ERROR;
890}
891
892status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
893{
894    ALOGV("getCurrentPosition");
895    sp<MediaPlayerBase> p = getPlayer();
896    if (p == 0) return UNKNOWN_ERROR;
897    status_t ret = p->getCurrentPosition(msec);
898    if (ret == NO_ERROR) {
899        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
900    } else {
901        ALOGE("getCurrentPosition returned %d", ret);
902    }
903    return ret;
904}
905
906status_t MediaPlayerService::Client::getDuration(int *msec)
907{
908    ALOGV("getDuration");
909    sp<MediaPlayerBase> p = getPlayer();
910    if (p == 0) return UNKNOWN_ERROR;
911    status_t ret = p->getDuration(msec);
912    if (ret == NO_ERROR) {
913        ALOGV("[%d] getDuration = %d", mConnId, *msec);
914    } else {
915        ALOGE("getDuration returned %d", ret);
916    }
917    return ret;
918}
919
920status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
921    ALOGV("setNextPlayer");
922    Mutex::Autolock l(mLock);
923    sp<Client> c = static_cast<Client*>(player.get());
924    mNextClient = c;
925
926    if (c != NULL) {
927        if (mAudioOutput != NULL) {
928            mAudioOutput->setNextOutput(c->mAudioOutput);
929        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
930            ALOGE("no current audio output");
931        }
932
933        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
934            mPlayer->setNextPlayer(mNextClient->getPlayer());
935        }
936    }
937
938    return OK;
939}
940
941status_t MediaPlayerService::Client::seekTo(int msec)
942{
943    ALOGV("[%d] seekTo(%d)", mConnId, msec);
944    sp<MediaPlayerBase> p = getPlayer();
945    if (p == 0) return UNKNOWN_ERROR;
946    return p->seekTo(msec);
947}
948
949status_t MediaPlayerService::Client::reset()
950{
951    ALOGV("[%d] reset", mConnId);
952    mRetransmitEndpointValid = false;
953    sp<MediaPlayerBase> p = getPlayer();
954    if (p == 0) return UNKNOWN_ERROR;
955    return p->reset();
956}
957
958status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
959{
960    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
961    // TODO: for hardware output, call player instead
962    Mutex::Autolock l(mLock);
963    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
964    return NO_ERROR;
965}
966
967status_t MediaPlayerService::Client::setLooping(int loop)
968{
969    ALOGV("[%d] setLooping(%d)", mConnId, loop);
970    mLoop = loop;
971    sp<MediaPlayerBase> p = getPlayer();
972    if (p != 0) return p->setLooping(loop);
973    return NO_ERROR;
974}
975
976status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
977{
978    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
979
980    // for hardware output, call player instead
981    sp<MediaPlayerBase> p = getPlayer();
982    {
983      Mutex::Autolock l(mLock);
984      if (p != 0 && p->hardwareOutput()) {
985          MediaPlayerHWInterface* hwp =
986                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
987          return hwp->setVolume(leftVolume, rightVolume);
988      } else {
989          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
990          return NO_ERROR;
991      }
992    }
993
994    return NO_ERROR;
995}
996
997status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
998{
999    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1000    Mutex::Autolock l(mLock);
1001    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1002    return NO_ERROR;
1003}
1004
1005status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1006{
1007    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1008    Mutex::Autolock l(mLock);
1009    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1010    return NO_ERROR;
1011}
1012
1013status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1014    ALOGV("[%d] setParameter(%d)", mConnId, key);
1015    sp<MediaPlayerBase> p = getPlayer();
1016    if (p == 0) return UNKNOWN_ERROR;
1017    return p->setParameter(key, request);
1018}
1019
1020status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1021    ALOGV("[%d] getParameter(%d)", mConnId, key);
1022    sp<MediaPlayerBase> p = getPlayer();
1023    if (p == 0) return UNKNOWN_ERROR;
1024    return p->getParameter(key, reply);
1025}
1026
1027status_t MediaPlayerService::Client::setRetransmitEndpoint(
1028        const struct sockaddr_in* endpoint) {
1029
1030    if (NULL != endpoint) {
1031        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1032        uint16_t p = ntohs(endpoint->sin_port);
1033        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1034                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1035    } else {
1036        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1037    }
1038
1039    sp<MediaPlayerBase> p = getPlayer();
1040
1041    // Right now, the only valid time to set a retransmit endpoint is before
1042    // player selection has been made (since the presence or absence of a
1043    // retransmit endpoint is going to determine which player is selected during
1044    // setDataSource).
1045    if (p != 0) return INVALID_OPERATION;
1046
1047    if (NULL != endpoint) {
1048        mRetransmitEndpoint = *endpoint;
1049        mRetransmitEndpointValid = true;
1050    } else {
1051        mRetransmitEndpointValid = false;
1052    }
1053
1054    return NO_ERROR;
1055}
1056
1057status_t MediaPlayerService::Client::getRetransmitEndpoint(
1058        struct sockaddr_in* endpoint)
1059{
1060    if (NULL == endpoint)
1061        return BAD_VALUE;
1062
1063    sp<MediaPlayerBase> p = getPlayer();
1064
1065    if (p != NULL)
1066        return p->getRetransmitEndpoint(endpoint);
1067
1068    if (!mRetransmitEndpointValid)
1069        return NO_INIT;
1070
1071    *endpoint = mRetransmitEndpoint;
1072
1073    return NO_ERROR;
1074}
1075
1076void MediaPlayerService::Client::notify(
1077        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1078{
1079    Client* client = static_cast<Client*>(cookie);
1080    if (client == NULL) {
1081        return;
1082    }
1083
1084    sp<IMediaPlayerClient> c;
1085    {
1086        Mutex::Autolock l(client->mLock);
1087        c = client->mClient;
1088        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1089            if (client->mAudioOutput != NULL)
1090                client->mAudioOutput->switchToNextOutput();
1091            client->mNextClient->start();
1092            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1093        }
1094    }
1095
1096    if (MEDIA_INFO == msg &&
1097        MEDIA_INFO_METADATA_UPDATE == ext1) {
1098        const media::Metadata::Type metadata_type = ext2;
1099
1100        if(client->shouldDropMetadata(metadata_type)) {
1101            return;
1102        }
1103
1104        // Update the list of metadata that have changed. getMetadata
1105        // also access mMetadataUpdated and clears it.
1106        client->addNewMetadataUpdate(metadata_type);
1107    }
1108
1109    if (c != NULL) {
1110        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1111        c->notify(msg, ext1, ext2, obj);
1112    }
1113}
1114
1115
1116bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1117{
1118    Mutex::Autolock lock(mLock);
1119
1120    if (findMetadata(mMetadataDrop, code)) {
1121        return true;
1122    }
1123
1124    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1125        return false;
1126    } else {
1127        return true;
1128    }
1129}
1130
1131
1132void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1133    Mutex::Autolock lock(mLock);
1134    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1135        mMetadataUpdated.add(metadata_type);
1136    }
1137}
1138
1139#if CALLBACK_ANTAGONIZER
1140const int Antagonizer::interval = 10000; // 10 msecs
1141
1142Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1143    mExit(false), mActive(false), mClient(client), mCb(cb)
1144{
1145    createThread(callbackThread, this);
1146}
1147
1148void Antagonizer::kill()
1149{
1150    Mutex::Autolock _l(mLock);
1151    mActive = false;
1152    mExit = true;
1153    mCondition.wait(mLock);
1154}
1155
1156int Antagonizer::callbackThread(void* user)
1157{
1158    ALOGD("Antagonizer started");
1159    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1160    while (!p->mExit) {
1161        if (p->mActive) {
1162            ALOGV("send event");
1163            p->mCb(p->mClient, 0, 0, 0);
1164        }
1165        usleep(interval);
1166    }
1167    Mutex::Autolock _l(p->mLock);
1168    p->mCondition.signal();
1169    ALOGD("Antagonizer stopped");
1170    return 0;
1171}
1172#endif
1173
1174static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1175
1176sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1177{
1178    ALOGV("decode(%s)", url);
1179    sp<MemoryBase> mem;
1180    sp<MediaPlayerBase> player;
1181
1182    // Protect our precious, precious DRMd ringtones by only allowing
1183    // decoding of http, but not filesystem paths or content Uris.
1184    // If the application wants to decode those, it should open a
1185    // filedescriptor for them and use that.
1186    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1187        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1188        return mem;
1189    }
1190
1191    player_type playerType =
1192        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1193    ALOGV("player type = %d", playerType);
1194
1195    // create the right type of player
1196    sp<AudioCache> cache = new AudioCache(url);
1197    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1198    if (player == NULL) goto Exit;
1199    if (player->hardwareOutput()) goto Exit;
1200
1201    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1202
1203    // set data source
1204    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1205
1206    ALOGV("prepare");
1207    player->prepareAsync();
1208
1209    ALOGV("wait for prepare");
1210    if (cache->wait() != NO_ERROR) goto Exit;
1211
1212    ALOGV("start");
1213    player->start();
1214
1215    ALOGV("wait for playback complete");
1216    cache->wait();
1217    // in case of error, return what was successfully decoded.
1218    if (cache->size() == 0) {
1219        goto Exit;
1220    }
1221
1222    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1223    *pSampleRate = cache->sampleRate();
1224    *pNumChannels = cache->channelCount();
1225    *pFormat = cache->format();
1226    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1227
1228Exit:
1229    if (player != 0) player->reset();
1230    return mem;
1231}
1232
1233sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1234{
1235    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1236    sp<MemoryBase> mem;
1237    sp<MediaPlayerBase> player;
1238
1239    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1240                                                               fd,
1241                                                               offset,
1242                                                               length);
1243    ALOGV("player type = %d", playerType);
1244
1245    // create the right type of player
1246    sp<AudioCache> cache = new AudioCache("decode_fd");
1247    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1248    if (player == NULL) goto Exit;
1249    if (player->hardwareOutput()) goto Exit;
1250
1251    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1252
1253    // set data source
1254    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1255
1256    ALOGV("prepare");
1257    player->prepareAsync();
1258
1259    ALOGV("wait for prepare");
1260    if (cache->wait() != NO_ERROR) goto Exit;
1261
1262    ALOGV("start");
1263    player->start();
1264
1265    ALOGV("wait for playback complete");
1266    cache->wait();
1267    // in case of error, return what was successfully decoded.
1268    if (cache->size() == 0) {
1269        goto Exit;
1270    }
1271
1272    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1273    *pSampleRate = cache->sampleRate();
1274    *pNumChannels = cache->channelCount();
1275    *pFormat = cache->format();
1276    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1277
1278Exit:
1279    if (player != 0) player->reset();
1280    ::close(fd);
1281    return mem;
1282}
1283
1284
1285#undef LOG_TAG
1286#define LOG_TAG "AudioSink"
1287MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1288    : mCallback(NULL),
1289      mCallbackCookie(NULL),
1290      mCallbackData(NULL),
1291      mBytesWritten(0),
1292      mSessionId(sessionId),
1293      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1294    ALOGV("AudioOutput(%d)", sessionId);
1295    mTrack = 0;
1296    mRecycledTrack = 0;
1297    mStreamType = AUDIO_STREAM_MUSIC;
1298    mLeftVolume = 1.0;
1299    mRightVolume = 1.0;
1300    mPlaybackRatePermille = 1000;
1301    mSampleRateHz = 0;
1302    mMsecsPerFrame = 0;
1303    mAuxEffectId = 0;
1304    mSendLevel = 0.0;
1305    setMinBufferCount();
1306}
1307
1308MediaPlayerService::AudioOutput::~AudioOutput()
1309{
1310    close();
1311    delete mRecycledTrack;
1312    delete mCallbackData;
1313}
1314
1315void MediaPlayerService::AudioOutput::setMinBufferCount()
1316{
1317    char value[PROPERTY_VALUE_MAX];
1318    if (property_get("ro.kernel.qemu", value, 0)) {
1319        mIsOnEmulator = true;
1320        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1321    }
1322}
1323
1324bool MediaPlayerService::AudioOutput::isOnEmulator()
1325{
1326    setMinBufferCount();
1327    return mIsOnEmulator;
1328}
1329
1330int MediaPlayerService::AudioOutput::getMinBufferCount()
1331{
1332    setMinBufferCount();
1333    return mMinBufferCount;
1334}
1335
1336ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1337{
1338    if (mTrack == 0) return NO_INIT;
1339    return mTrack->frameCount() * frameSize();
1340}
1341
1342ssize_t MediaPlayerService::AudioOutput::frameCount() const
1343{
1344    if (mTrack == 0) return NO_INIT;
1345    return mTrack->frameCount();
1346}
1347
1348ssize_t MediaPlayerService::AudioOutput::channelCount() const
1349{
1350    if (mTrack == 0) return NO_INIT;
1351    return mTrack->channelCount();
1352}
1353
1354ssize_t MediaPlayerService::AudioOutput::frameSize() const
1355{
1356    if (mTrack == 0) return NO_INIT;
1357    return mTrack->frameSize();
1358}
1359
1360uint32_t MediaPlayerService::AudioOutput::latency () const
1361{
1362    if (mTrack == 0) return 0;
1363    return mTrack->latency();
1364}
1365
1366float MediaPlayerService::AudioOutput::msecsPerFrame() const
1367{
1368    return mMsecsPerFrame;
1369}
1370
1371status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1372{
1373    if (mTrack == 0) return NO_INIT;
1374    return mTrack->getPosition(position);
1375}
1376
1377status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1378{
1379    if (mTrack == 0) return NO_INIT;
1380    *frameswritten = mBytesWritten / frameSize();
1381    return OK;
1382}
1383
1384status_t MediaPlayerService::AudioOutput::open(
1385        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1386        audio_format_t format, int bufferCount,
1387        AudioCallback cb, void *cookie,
1388        audio_output_flags_t flags)
1389{
1390    mCallback = cb;
1391    mCallbackCookie = cookie;
1392
1393    // Check argument "bufferCount" against the mininum buffer count
1394    if (bufferCount < mMinBufferCount) {
1395        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1396        bufferCount = mMinBufferCount;
1397
1398    }
1399    ALOGV("open(%u, %d, 0x%x, %d, %d, %d)", sampleRate, channelCount, channelMask,
1400            format, bufferCount, mSessionId);
1401    int afSampleRate;
1402    int afFrameCount;
1403    uint32_t frameCount;
1404
1405    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1406        return NO_INIT;
1407    }
1408    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1409        return NO_INIT;
1410    }
1411
1412    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1413
1414    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1415        channelMask = audio_channel_out_mask_from_count(channelCount);
1416        if (0 == channelMask) {
1417            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1418            return NO_INIT;
1419        }
1420    }
1421
1422    AudioTrack *t;
1423    CallbackData *newcbd = NULL;
1424    if (mCallback != NULL) {
1425        newcbd = new CallbackData(this);
1426        t = new AudioTrack(
1427                mStreamType,
1428                sampleRate,
1429                format,
1430                channelMask,
1431                frameCount,
1432                flags,
1433                CallbackWrapper,
1434                newcbd,
1435                0,  // notification frames
1436                mSessionId);
1437    } else {
1438        t = new AudioTrack(
1439                mStreamType,
1440                sampleRate,
1441                format,
1442                channelMask,
1443                frameCount,
1444                flags,
1445                NULL,
1446                NULL,
1447                0,
1448                mSessionId);
1449    }
1450
1451    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1452        ALOGE("Unable to create audio track");
1453        delete t;
1454        delete newcbd;
1455        return NO_INIT;
1456    }
1457
1458
1459    if (mRecycledTrack) {
1460        // check if the existing track can be reused as-is, or if a new track needs to be created.
1461
1462        bool reuse = true;
1463        if ((mCallbackData == NULL && mCallback != NULL) ||
1464                (mCallbackData != NULL && mCallback == NULL)) {
1465            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1466            ALOGV("can't chain callback and write");
1467            reuse = false;
1468        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1469                (mRecycledTrack->channelCount() != channelCount) ||
1470                (mRecycledTrack->frameCount() != t->frameCount())) {
1471            ALOGV("samplerate, channelcount or framecount differ: %d/%d Hz, %d/%d ch, %d/%d frames",
1472                  mRecycledTrack->getSampleRate(), sampleRate,
1473                  mRecycledTrack->channelCount(), channelCount,
1474                  mRecycledTrack->frameCount(), t->frameCount());
1475            reuse = false;
1476        } else if (flags != mFlags) {
1477            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1478            reuse = false;
1479        }
1480        if (reuse) {
1481            ALOGV("chaining to next output");
1482            close();
1483            mTrack = mRecycledTrack;
1484            mRecycledTrack = NULL;
1485            if (mCallbackData != NULL) {
1486                mCallbackData->setOutput(this);
1487            }
1488            delete t;
1489            delete newcbd;
1490            return OK;
1491        }
1492
1493        // if we're not going to reuse the track, unblock and flush it
1494        if (mCallbackData != NULL) {
1495            mCallbackData->setOutput(NULL);
1496            mCallbackData->endTrackSwitch();
1497        }
1498        mRecycledTrack->flush();
1499        delete mRecycledTrack;
1500        mRecycledTrack = NULL;
1501        delete mCallbackData;
1502        mCallbackData = NULL;
1503        close();
1504    }
1505
1506    mCallbackData = newcbd;
1507    ALOGV("setVolume");
1508    t->setVolume(mLeftVolume, mRightVolume);
1509
1510    mSampleRateHz = sampleRate;
1511    mFlags = flags;
1512    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1513    uint32_t pos;
1514    if (t->getPosition(&pos) == OK) {
1515        mBytesWritten = uint64_t(pos) * t->frameSize();
1516    }
1517    mTrack = t;
1518
1519    status_t res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1520    if (res != NO_ERROR) {
1521        return res;
1522    }
1523    t->setAuxEffectSendLevel(mSendLevel);
1524    return t->attachAuxEffect(mAuxEffectId);;
1525}
1526
1527void MediaPlayerService::AudioOutput::start()
1528{
1529    ALOGV("start");
1530    if (mCallbackData != NULL) {
1531        mCallbackData->endTrackSwitch();
1532    }
1533    if (mTrack) {
1534        mTrack->setVolume(mLeftVolume, mRightVolume);
1535        mTrack->setAuxEffectSendLevel(mSendLevel);
1536        mTrack->start();
1537    }
1538}
1539
1540void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1541    mNextOutput = nextOutput;
1542}
1543
1544
1545void MediaPlayerService::AudioOutput::switchToNextOutput() {
1546    ALOGV("switchToNextOutput");
1547    if (mNextOutput != NULL) {
1548        if (mCallbackData != NULL) {
1549            mCallbackData->beginTrackSwitch();
1550        }
1551        delete mNextOutput->mCallbackData;
1552        mNextOutput->mCallbackData = mCallbackData;
1553        mCallbackData = NULL;
1554        mNextOutput->mRecycledTrack = mTrack;
1555        mTrack = NULL;
1556        mNextOutput->mSampleRateHz = mSampleRateHz;
1557        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1558        mNextOutput->mBytesWritten = mBytesWritten;
1559        mNextOutput->mFlags = mFlags;
1560    }
1561}
1562
1563ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1564{
1565    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1566
1567    //ALOGV("write(%p, %u)", buffer, size);
1568    if (mTrack) {
1569        ssize_t ret = mTrack->write(buffer, size);
1570        mBytesWritten += ret;
1571        return ret;
1572    }
1573    return NO_INIT;
1574}
1575
1576void MediaPlayerService::AudioOutput::stop()
1577{
1578    ALOGV("stop");
1579    if (mTrack) mTrack->stop();
1580}
1581
1582void MediaPlayerService::AudioOutput::flush()
1583{
1584    ALOGV("flush");
1585    if (mTrack) mTrack->flush();
1586}
1587
1588void MediaPlayerService::AudioOutput::pause()
1589{
1590    ALOGV("pause");
1591    if (mTrack) mTrack->pause();
1592}
1593
1594void MediaPlayerService::AudioOutput::close()
1595{
1596    ALOGV("close");
1597    delete mTrack;
1598    mTrack = 0;
1599}
1600
1601void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1602{
1603    ALOGV("setVolume(%f, %f)", left, right);
1604    mLeftVolume = left;
1605    mRightVolume = right;
1606    if (mTrack) {
1607        mTrack->setVolume(left, right);
1608    }
1609}
1610
1611status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1612{
1613    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1614    status_t res = NO_ERROR;
1615    if (mTrack) {
1616        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1617    } else {
1618        res = NO_INIT;
1619    }
1620    mPlaybackRatePermille = ratePermille;
1621    if (mSampleRateHz != 0) {
1622        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1623    }
1624    return res;
1625}
1626
1627status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1628{
1629    ALOGV("setAuxEffectSendLevel(%f)", level);
1630    mSendLevel = level;
1631    if (mTrack) {
1632        return mTrack->setAuxEffectSendLevel(level);
1633    }
1634    return NO_ERROR;
1635}
1636
1637status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1638{
1639    ALOGV("attachAuxEffect(%d)", effectId);
1640    mAuxEffectId = effectId;
1641    if (mTrack) {
1642        return mTrack->attachAuxEffect(effectId);
1643    }
1644    return NO_ERROR;
1645}
1646
1647// static
1648void MediaPlayerService::AudioOutput::CallbackWrapper(
1649        int event, void *cookie, void *info) {
1650    //ALOGV("callbackwrapper");
1651    if (event != AudioTrack::EVENT_MORE_DATA) {
1652        return;
1653    }
1654
1655    CallbackData *data = (CallbackData*)cookie;
1656    data->lock();
1657    AudioOutput *me = data->getOutput();
1658    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1659    if (me == NULL) {
1660        // no output set, likely because the track was scheduled to be reused
1661        // by another player, but the format turned out to be incompatible.
1662        data->unlock();
1663        buffer->size = 0;
1664        return;
1665    }
1666
1667    size_t actualSize = (*me->mCallback)(
1668            me, buffer->raw, buffer->size, me->mCallbackCookie);
1669
1670    if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1671        // We've reached EOS but the audio track is not stopped yet,
1672        // keep playing silence.
1673
1674        memset(buffer->raw, 0, buffer->size);
1675        actualSize = buffer->size;
1676    }
1677
1678    buffer->size = actualSize;
1679    data->unlock();
1680}
1681
1682int MediaPlayerService::AudioOutput::getSessionId() const
1683{
1684    return mSessionId;
1685}
1686
1687#undef LOG_TAG
1688#define LOG_TAG "AudioCache"
1689MediaPlayerService::AudioCache::AudioCache(const char* name) :
1690    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1691    mError(NO_ERROR), mCommandComplete(false)
1692{
1693    // create ashmem heap
1694    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1695}
1696
1697uint32_t MediaPlayerService::AudioCache::latency () const
1698{
1699    return 0;
1700}
1701
1702float MediaPlayerService::AudioCache::msecsPerFrame() const
1703{
1704    return mMsecsPerFrame;
1705}
1706
1707status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1708{
1709    if (position == 0) return BAD_VALUE;
1710    *position = mSize;
1711    return NO_ERROR;
1712}
1713
1714status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1715{
1716    if (written == 0) return BAD_VALUE;
1717    *written = mSize;
1718    return NO_ERROR;
1719}
1720
1721////////////////////////////////////////////////////////////////////////////////
1722
1723struct CallbackThread : public Thread {
1724    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1725                   MediaPlayerBase::AudioSink::AudioCallback cb,
1726                   void *cookie);
1727
1728protected:
1729    virtual ~CallbackThread();
1730
1731    virtual bool threadLoop();
1732
1733private:
1734    wp<MediaPlayerBase::AudioSink> mSink;
1735    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1736    void *mCookie;
1737    void *mBuffer;
1738    size_t mBufferSize;
1739
1740    CallbackThread(const CallbackThread &);
1741    CallbackThread &operator=(const CallbackThread &);
1742};
1743
1744CallbackThread::CallbackThread(
1745        const wp<MediaPlayerBase::AudioSink> &sink,
1746        MediaPlayerBase::AudioSink::AudioCallback cb,
1747        void *cookie)
1748    : mSink(sink),
1749      mCallback(cb),
1750      mCookie(cookie),
1751      mBuffer(NULL),
1752      mBufferSize(0) {
1753}
1754
1755CallbackThread::~CallbackThread() {
1756    if (mBuffer) {
1757        free(mBuffer);
1758        mBuffer = NULL;
1759    }
1760}
1761
1762bool CallbackThread::threadLoop() {
1763    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1764    if (sink == NULL) {
1765        return false;
1766    }
1767
1768    if (mBuffer == NULL) {
1769        mBufferSize = sink->bufferSize();
1770        mBuffer = malloc(mBufferSize);
1771    }
1772
1773    size_t actualSize =
1774        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1775
1776    if (actualSize > 0) {
1777        sink->write(mBuffer, actualSize);
1778    }
1779
1780    return true;
1781}
1782
1783////////////////////////////////////////////////////////////////////////////////
1784
1785status_t MediaPlayerService::AudioCache::open(
1786        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1787        audio_format_t format, int bufferCount,
1788        AudioCallback cb, void *cookie, audio_output_flags_t flags)
1789{
1790    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
1791    if (mHeap->getHeapID() < 0) {
1792        return NO_INIT;
1793    }
1794
1795    mSampleRate = sampleRate;
1796    mChannelCount = (uint16_t)channelCount;
1797    mFormat = format;
1798    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1799
1800    if (cb != NULL) {
1801        mCallbackThread = new CallbackThread(this, cb, cookie);
1802    }
1803    return NO_ERROR;
1804}
1805
1806void MediaPlayerService::AudioCache::start() {
1807    if (mCallbackThread != NULL) {
1808        mCallbackThread->run("AudioCache callback");
1809    }
1810}
1811
1812void MediaPlayerService::AudioCache::stop() {
1813    if (mCallbackThread != NULL) {
1814        mCallbackThread->requestExitAndWait();
1815    }
1816}
1817
1818ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1819{
1820    ALOGV("write(%p, %u)", buffer, size);
1821    if ((buffer == 0) || (size == 0)) return size;
1822
1823    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1824    if (p == NULL) return NO_INIT;
1825    p += mSize;
1826    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1827    if (mSize + size > mHeap->getSize()) {
1828        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1829        size = mHeap->getSize() - mSize;
1830    }
1831    memcpy(p, buffer, size);
1832    mSize += size;
1833    return size;
1834}
1835
1836// call with lock held
1837status_t MediaPlayerService::AudioCache::wait()
1838{
1839    Mutex::Autolock lock(mLock);
1840    while (!mCommandComplete) {
1841        mSignal.wait(mLock);
1842    }
1843    mCommandComplete = false;
1844
1845    if (mError == NO_ERROR) {
1846        ALOGV("wait - success");
1847    } else {
1848        ALOGV("wait - error");
1849    }
1850    return mError;
1851}
1852
1853void MediaPlayerService::AudioCache::notify(
1854        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1855{
1856    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1857    AudioCache* p = static_cast<AudioCache*>(cookie);
1858
1859    // ignore buffering messages
1860    switch (msg)
1861    {
1862    case MEDIA_ERROR:
1863        ALOGE("Error %d, %d occurred", ext1, ext2);
1864        p->mError = ext1;
1865        break;
1866    case MEDIA_PREPARED:
1867        ALOGV("prepared");
1868        break;
1869    case MEDIA_PLAYBACK_COMPLETE:
1870        ALOGV("playback complete");
1871        break;
1872    default:
1873        ALOGV("ignored");
1874        return;
1875    }
1876
1877    // wake up thread
1878    Mutex::Autolock lock(p->mLock);
1879    p->mCommandComplete = true;
1880    p->mSignal.signal();
1881}
1882
1883int MediaPlayerService::AudioCache::getSessionId() const
1884{
1885    return 0;
1886}
1887
1888void MediaPlayerService::addBatteryData(uint32_t params)
1889{
1890    Mutex::Autolock lock(mLock);
1891
1892    int32_t time = systemTime() / 1000000L;
1893
1894    // change audio output devices. This notification comes from AudioFlinger
1895    if ((params & kBatteryDataSpeakerOn)
1896            || (params & kBatteryDataOtherAudioDeviceOn)) {
1897
1898        int deviceOn[NUM_AUDIO_DEVICES];
1899        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1900            deviceOn[i] = 0;
1901        }
1902
1903        if ((params & kBatteryDataSpeakerOn)
1904                && (params & kBatteryDataOtherAudioDeviceOn)) {
1905            deviceOn[SPEAKER_AND_OTHER] = 1;
1906        } else if (params & kBatteryDataSpeakerOn) {
1907            deviceOn[SPEAKER] = 1;
1908        } else {
1909            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1910        }
1911
1912        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1913            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1914
1915                if (mBatteryAudio.refCount > 0) { // if playing audio
1916                    if (!deviceOn[i]) {
1917                        mBatteryAudio.lastTime[i] += time;
1918                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1919                        mBatteryAudio.lastTime[i] = 0;
1920                    } else {
1921                        mBatteryAudio.lastTime[i] = 0 - time;
1922                    }
1923                }
1924
1925                mBatteryAudio.deviceOn[i] = deviceOn[i];
1926            }
1927        }
1928        return;
1929    }
1930
1931    // an sudio stream is started
1932    if (params & kBatteryDataAudioFlingerStart) {
1933        // record the start time only if currently no other audio
1934        // is being played
1935        if (mBatteryAudio.refCount == 0) {
1936            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1937                if (mBatteryAudio.deviceOn[i]) {
1938                    mBatteryAudio.lastTime[i] -= time;
1939                }
1940            }
1941        }
1942
1943        mBatteryAudio.refCount ++;
1944        return;
1945
1946    } else if (params & kBatteryDataAudioFlingerStop) {
1947        if (mBatteryAudio.refCount <= 0) {
1948            ALOGW("Battery track warning: refCount is <= 0");
1949            return;
1950        }
1951
1952        // record the stop time only if currently this is the only
1953        // audio being played
1954        if (mBatteryAudio.refCount == 1) {
1955            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1956                if (mBatteryAudio.deviceOn[i]) {
1957                    mBatteryAudio.lastTime[i] += time;
1958                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1959                    mBatteryAudio.lastTime[i] = 0;
1960                }
1961            }
1962        }
1963
1964        mBatteryAudio.refCount --;
1965        return;
1966    }
1967
1968    int uid = IPCThreadState::self()->getCallingUid();
1969    if (uid == AID_MEDIA) {
1970        return;
1971    }
1972    int index = mBatteryData.indexOfKey(uid);
1973
1974    if (index < 0) { // create a new entry for this UID
1975        BatteryUsageInfo info;
1976        info.audioTotalTime = 0;
1977        info.videoTotalTime = 0;
1978        info.audioLastTime = 0;
1979        info.videoLastTime = 0;
1980        info.refCount = 0;
1981
1982        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1983            ALOGE("Battery track error: no memory for new app");
1984            return;
1985        }
1986    }
1987
1988    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1989
1990    if (params & kBatteryDataCodecStarted) {
1991        if (params & kBatteryDataTrackAudio) {
1992            info.audioLastTime -= time;
1993            info.refCount ++;
1994        }
1995        if (params & kBatteryDataTrackVideo) {
1996            info.videoLastTime -= time;
1997            info.refCount ++;
1998        }
1999    } else {
2000        if (info.refCount == 0) {
2001            ALOGW("Battery track warning: refCount is already 0");
2002            return;
2003        } else if (info.refCount < 0) {
2004            ALOGE("Battery track error: refCount < 0");
2005            mBatteryData.removeItem(uid);
2006            return;
2007        }
2008
2009        if (params & kBatteryDataTrackAudio) {
2010            info.audioLastTime += time;
2011            info.refCount --;
2012        }
2013        if (params & kBatteryDataTrackVideo) {
2014            info.videoLastTime += time;
2015            info.refCount --;
2016        }
2017
2018        // no stream is being played by this UID
2019        if (info.refCount == 0) {
2020            info.audioTotalTime += info.audioLastTime;
2021            info.audioLastTime = 0;
2022            info.videoTotalTime += info.videoLastTime;
2023            info.videoLastTime = 0;
2024        }
2025    }
2026}
2027
2028status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2029    Mutex::Autolock lock(mLock);
2030
2031    // audio output devices usage
2032    int32_t time = systemTime() / 1000000L; //in ms
2033    int32_t totalTime;
2034
2035    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2036        totalTime = mBatteryAudio.totalTime[i];
2037
2038        if (mBatteryAudio.deviceOn[i]
2039            && (mBatteryAudio.lastTime[i] != 0)) {
2040                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2041                totalTime += tmpTime;
2042        }
2043
2044        reply->writeInt32(totalTime);
2045        // reset the total time
2046        mBatteryAudio.totalTime[i] = 0;
2047   }
2048
2049    // codec usage
2050    BatteryUsageInfo info;
2051    int size = mBatteryData.size();
2052
2053    reply->writeInt32(size);
2054    int i = 0;
2055
2056    while (i < size) {
2057        info = mBatteryData.valueAt(i);
2058
2059        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2060        reply->writeInt32(info.audioTotalTime);
2061        reply->writeInt32(info.videoTotalTime);
2062
2063        info.audioTotalTime = 0;
2064        info.videoTotalTime = 0;
2065
2066        // remove the UID entry where no stream is being played
2067        if (info.refCount <= 0) {
2068            mBatteryData.removeItemsAt(i);
2069            size --;
2070            i --;
2071        }
2072        i++;
2073    }
2074    return NO_ERROR;
2075}
2076} // namespace android
2077