MediaPlayerService.cpp revision cc82dc6d500023eba6048616301a4b12682458db 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <sys/time.h>
27#include <dirent.h>
28#include <unistd.h>
29
30#include <string.h>
31
32#include <cutils/atomic.h>
33#include <cutils/properties.h> // for property_get
34
35#include <utils/misc.h>
36
37#include <binder/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/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 "Drm.h"
76#include "HDCP.h"
77#include "RemoteDisplay.h"
78
79namespace {
80using android::media::Metadata;
81using android::status_t;
82using android::OK;
83using android::BAD_VALUE;
84using android::NOT_ENOUGH_DATA;
85using android::Parcel;
86
87// Max number of entries in the filter.
88const int kMaxFilterSize = 64;  // I pulled that out of thin air.
89
90// FIXME: Move all the metadata related function in the Metadata.cpp
91
92
93// Unmarshall a filter from a Parcel.
94// Filter format in a parcel:
95//
96//  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
97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
98// |                       number of entries (n)                   |
99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
100// |                       metadata type 1                         |
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102// |                       metadata type 2                         |
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104//  ....
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       metadata type n                         |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108//
109// @param p Parcel that should start with a filter.
110// @param[out] filter On exit contains the list of metadata type to be
111//                    filtered.
112// @param[out] status On exit contains the status code to be returned.
113// @return true if the parcel starts with a valid filter.
114bool unmarshallFilter(const Parcel& p,
115                      Metadata::Filter *filter,
116                      status_t *status)
117{
118    int32_t val;
119    if (p.readInt32(&val) != OK)
120    {
121        ALOGE("Failed to read filter's length");
122        *status = NOT_ENOUGH_DATA;
123        return false;
124    }
125
126    if( val > kMaxFilterSize || val < 0)
127    {
128        ALOGE("Invalid filter len %d", val);
129        *status = BAD_VALUE;
130        return false;
131    }
132
133    const size_t num = val;
134
135    filter->clear();
136    filter->setCapacity(num);
137
138    size_t size = num * sizeof(Metadata::Type);
139
140
141    if (p.dataAvail() < size)
142    {
143        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
144        *status = NOT_ENOUGH_DATA;
145        return false;
146    }
147
148    const Metadata::Type *data =
149            static_cast<const Metadata::Type*>(p.readInplace(size));
150
151    if (NULL == data)
152    {
153        ALOGE("Filter had no data");
154        *status = BAD_VALUE;
155        return false;
156    }
157
158    // TODO: The stl impl of vector would be more efficient here
159    // because it degenerates into a memcpy on pod types. Try to
160    // replace later or use stl::set.
161    for (size_t i = 0; i < num; ++i)
162    {
163        filter->add(*data);
164        ++data;
165    }
166    *status = OK;
167    return true;
168}
169
170// @param filter Of metadata type.
171// @param val To be searched.
172// @return true if a match was found.
173bool findMetadata(const Metadata::Filter& filter, const int32_t val)
174{
175    // Deal with empty and ANY right away
176    if (filter.isEmpty()) return false;
177    if (filter[0] == Metadata::kAny) return true;
178
179    return filter.indexOf(val) >= 0;
180}
181
182}  // anonymous namespace
183
184
185namespace android {
186
187static bool checkPermission(const char* permissionString) {
188#ifndef HAVE_ANDROID_OS
189    return true;
190#endif
191    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
192    bool ok = checkCallingPermission(String16(permissionString));
193    if (!ok) ALOGE("Request requires %s", permissionString);
194    return ok;
195}
196
197// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
198/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
199/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
200
201void MediaPlayerService::instantiate() {
202    defaultServiceManager()->addService(
203            String16("media.player"), new MediaPlayerService());
204}
205
206MediaPlayerService::MediaPlayerService()
207{
208    ALOGV("MediaPlayerService created");
209    mNextConnId = 1;
210
211    mBatteryAudio.refCount = 0;
212    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
213        mBatteryAudio.deviceOn[i] = 0;
214        mBatteryAudio.lastTime[i] = 0;
215        mBatteryAudio.totalTime[i] = 0;
216    }
217    // speaker is on by default
218    mBatteryAudio.deviceOn[SPEAKER] = 1;
219
220    MediaPlayerFactory::registerBuiltinFactories();
221}
222
223MediaPlayerService::~MediaPlayerService()
224{
225    ALOGV("MediaPlayerService destroyed");
226}
227
228sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
229{
230    pid_t pid = IPCThreadState::self()->getCallingPid();
231    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
232    wp<MediaRecorderClient> w = recorder;
233    Mutex::Autolock lock(mLock);
234    mMediaRecorderClients.add(w);
235    ALOGV("Create new media recorder client from pid %d", pid);
236    return recorder;
237}
238
239void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
240{
241    Mutex::Autolock lock(mLock);
242    mMediaRecorderClients.remove(client);
243    ALOGV("Delete media recorder client");
244}
245
246sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
247{
248    pid_t pid = IPCThreadState::self()->getCallingPid();
249    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
250    ALOGV("Create new media retriever from pid %d", pid);
251    return retriever;
252}
253
254sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
255        int audioSessionId)
256{
257    pid_t pid = IPCThreadState::self()->getCallingPid();
258    int32_t connId = android_atomic_inc(&mNextConnId);
259
260    sp<Client> c = new Client(
261            this, pid, connId, client, audioSessionId,
262            IPCThreadState::self()->getCallingUid());
263
264    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
265         IPCThreadState::self()->getCallingUid());
266
267    wp<Client> w = c;
268    {
269        Mutex::Autolock lock(mLock);
270        mClients.add(w);
271    }
272    return c;
273}
274
275sp<IOMX> MediaPlayerService::getOMX() {
276    Mutex::Autolock autoLock(mLock);
277
278    if (mOMX.get() == NULL) {
279        mOMX = new OMX;
280    }
281
282    return mOMX;
283}
284
285sp<ICrypto> MediaPlayerService::makeCrypto() {
286    return new Crypto;
287}
288
289sp<IDrm> MediaPlayerService::makeDrm() {
290    return new Drm;
291}
292
293sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
294    return new HDCP(createEncryptionModule);
295}
296
297sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
298        const sp<IRemoteDisplayClient>& client, const String8& iface) {
299    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
300        return NULL;
301    }
302
303    return new RemoteDisplay(client, iface.string());
304}
305
306status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
307{
308    const size_t SIZE = 256;
309    char buffer[SIZE];
310    String8 result;
311
312    result.append(" AudioCache\n");
313    if (mHeap != 0) {
314        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
315                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
316        result.append(buffer);
317    }
318    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
319            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
320    result.append(buffer);
321    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
322            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
323    result.append(buffer);
324    ::write(fd, result.string(), result.size());
325    return NO_ERROR;
326}
327
328status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
329{
330    const size_t SIZE = 256;
331    char buffer[SIZE];
332    String8 result;
333
334    result.append(" AudioOutput\n");
335    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
336            mStreamType, mLeftVolume, mRightVolume);
337    result.append(buffer);
338    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
339            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
340    result.append(buffer);
341    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
342            mAuxEffectId, mSendLevel);
343    result.append(buffer);
344
345    ::write(fd, result.string(), result.size());
346    if (mTrack != 0) {
347        mTrack->dump(fd, args);
348    }
349    return NO_ERROR;
350}
351
352status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
353{
354    const size_t SIZE = 256;
355    char buffer[SIZE];
356    String8 result;
357    result.append(" Client\n");
358    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
359            mPid, mConnId, mStatus, mLoop?"true": "false");
360    result.append(buffer);
361    write(fd, result.string(), result.size());
362    if (mPlayer != NULL) {
363        mPlayer->dump(fd, args);
364    }
365    if (mAudioOutput != 0) {
366        mAudioOutput->dump(fd, args);
367    }
368    write(fd, "\n", 1);
369    return NO_ERROR;
370}
371
372status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
373{
374    const size_t SIZE = 256;
375    char buffer[SIZE];
376    String8 result;
377    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
378        snprintf(buffer, SIZE, "Permission Denial: "
379                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
380                IPCThreadState::self()->getCallingPid(),
381                IPCThreadState::self()->getCallingUid());
382        result.append(buffer);
383    } else {
384        Mutex::Autolock lock(mLock);
385        for (int i = 0, n = mClients.size(); i < n; ++i) {
386            sp<Client> c = mClients[i].promote();
387            if (c != 0) c->dump(fd, args);
388        }
389        if (mMediaRecorderClients.size() == 0) {
390                result.append(" No media recorder client\n\n");
391        } else {
392            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
393                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
394                if (c != 0) {
395                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
396                    result.append(buffer);
397                    write(fd, result.string(), result.size());
398                    result = "\n";
399                    c->dump(fd, args);
400                }
401            }
402        }
403
404        result.append(" Files opened and/or mapped:\n");
405        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
406        FILE *f = fopen(buffer, "r");
407        if (f) {
408            while (!feof(f)) {
409                fgets(buffer, SIZE, f);
410                if (strstr(buffer, " /storage/") ||
411                    strstr(buffer, " /system/sounds/") ||
412                    strstr(buffer, " /data/") ||
413                    strstr(buffer, " /system/media/")) {
414                    result.append("  ");
415                    result.append(buffer);
416                }
417            }
418            fclose(f);
419        } else {
420            result.append("couldn't open ");
421            result.append(buffer);
422            result.append("\n");
423        }
424
425        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
426        DIR *d = opendir(buffer);
427        if (d) {
428            struct dirent *ent;
429            while((ent = readdir(d)) != NULL) {
430                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
431                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
432                    struct stat s;
433                    if (lstat(buffer, &s) == 0) {
434                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
435                            char linkto[256];
436                            int len = readlink(buffer, linkto, sizeof(linkto));
437                            if(len > 0) {
438                                if(len > 255) {
439                                    linkto[252] = '.';
440                                    linkto[253] = '.';
441                                    linkto[254] = '.';
442                                    linkto[255] = 0;
443                                } else {
444                                    linkto[len] = 0;
445                                }
446                                if (strstr(linkto, "/storage/") == linkto ||
447                                    strstr(linkto, "/system/sounds/") == linkto ||
448                                    strstr(linkto, "/data/") == linkto ||
449                                    strstr(linkto, "/system/media/") == linkto) {
450                                    result.append("  ");
451                                    result.append(buffer);
452                                    result.append(" -> ");
453                                    result.append(linkto);
454                                    result.append("\n");
455                                }
456                            }
457                        } else {
458                            result.append("  unexpected type for ");
459                            result.append(buffer);
460                            result.append("\n");
461                        }
462                    }
463                }
464            }
465            closedir(d);
466        } else {
467            result.append("couldn't open ");
468            result.append(buffer);
469            result.append("\n");
470        }
471
472        bool dumpMem = false;
473        for (size_t i = 0; i < args.size(); i++) {
474            if (args[i] == String16("-m")) {
475                dumpMem = true;
476            }
477        }
478        if (dumpMem) {
479            dumpMemoryAddresses(fd);
480        }
481    }
482    write(fd, result.string(), result.size());
483    return NO_ERROR;
484}
485
486void MediaPlayerService::removeClient(wp<Client> client)
487{
488    Mutex::Autolock lock(mLock);
489    mClients.remove(client);
490}
491
492MediaPlayerService::Client::Client(
493        const sp<MediaPlayerService>& service, pid_t pid,
494        int32_t connId, const sp<IMediaPlayerClient>& client,
495        int audioSessionId, uid_t uid)
496{
497    ALOGV("Client(%d) constructor", connId);
498    mPid = pid;
499    mConnId = connId;
500    mService = service;
501    mClient = client;
502    mLoop = false;
503    mStatus = NO_INIT;
504    mAudioSessionId = audioSessionId;
505    mUID = uid;
506    mRetransmitEndpointValid = false;
507
508#if CALLBACK_ANTAGONIZER
509    ALOGD("create Antagonizer");
510    mAntagonizer = new Antagonizer(notify, this);
511#endif
512}
513
514MediaPlayerService::Client::~Client()
515{
516    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
517    mAudioOutput.clear();
518    wp<Client> client(this);
519    disconnect();
520    mService->removeClient(client);
521}
522
523void MediaPlayerService::Client::disconnect()
524{
525    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
526    // grab local reference and clear main reference to prevent future
527    // access to object
528    sp<MediaPlayerBase> p;
529    {
530        Mutex::Autolock l(mLock);
531        p = mPlayer;
532    }
533    mClient.clear();
534
535    mPlayer.clear();
536
537    // clear the notification to prevent callbacks to dead client
538    // and reset the player. We assume the player will serialize
539    // access to itself if necessary.
540    if (p != 0) {
541        p->setNotifyCallback(0, 0);
542#if CALLBACK_ANTAGONIZER
543        ALOGD("kill Antagonizer");
544        mAntagonizer->kill();
545#endif
546        p->reset();
547    }
548
549    disconnectNativeWindow();
550
551    IPCThreadState::self()->flushCommands();
552}
553
554sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
555{
556    // determine if we have the right player type
557    sp<MediaPlayerBase> p = mPlayer;
558    if ((p != NULL) && (p->playerType() != playerType)) {
559        ALOGV("delete player");
560        p.clear();
561    }
562    if (p == NULL) {
563        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
564    }
565
566    if (p != NULL) {
567        p->setUID(mUID);
568    }
569
570    return p;
571}
572
573sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
574        player_type playerType)
575{
576    ALOGV("player type = %d", playerType);
577
578    // create the right type of player
579    sp<MediaPlayerBase> p = createPlayer(playerType);
580    if (p == NULL) {
581        return p;
582    }
583
584    if (!p->hardwareOutput()) {
585        mAudioOutput = new AudioOutput(mAudioSessionId);
586        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
587    }
588
589    return p;
590}
591
592void MediaPlayerService::Client::setDataSource_post(
593        const sp<MediaPlayerBase>& p,
594        status_t status)
595{
596    ALOGV(" setDataSource");
597    mStatus = status;
598    if (mStatus != OK) {
599        ALOGE("  error: %d", mStatus);
600        return;
601    }
602
603    // Set the re-transmission endpoint if one was chosen.
604    if (mRetransmitEndpointValid) {
605        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
606        if (mStatus != NO_ERROR) {
607            ALOGE("setRetransmitEndpoint error: %d", mStatus);
608        }
609    }
610
611    if (mStatus == OK) {
612        mPlayer = p;
613    }
614}
615
616status_t MediaPlayerService::Client::setDataSource(
617        const char *url, const KeyedVector<String8, String8> *headers)
618{
619    ALOGV("setDataSource(%s)", url);
620    if (url == NULL)
621        return UNKNOWN_ERROR;
622
623    if ((strncmp(url, "http://", 7) == 0) ||
624        (strncmp(url, "https://", 8) == 0) ||
625        (strncmp(url, "rtsp://", 7) == 0)) {
626        if (!checkPermission("android.permission.INTERNET")) {
627            return PERMISSION_DENIED;
628        }
629    }
630
631    if (strncmp(url, "content://", 10) == 0) {
632        // get a filedescriptor for the content Uri and
633        // pass it to the setDataSource(fd) method
634
635        String16 url16(url);
636        int fd = android::openContentProviderFile(url16);
637        if (fd < 0)
638        {
639            ALOGE("Couldn't open fd for %s", url);
640            return UNKNOWN_ERROR;
641        }
642        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
643        close(fd);
644        return mStatus;
645    } else {
646        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
647        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
648        if (p == NULL) {
649            return NO_INIT;
650        }
651
652        setDataSource_post(p, p->setDataSource(url, headers));
653        return mStatus;
654    }
655}
656
657status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
658{
659    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
660    struct stat sb;
661    int ret = fstat(fd, &sb);
662    if (ret != 0) {
663        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
664        return UNKNOWN_ERROR;
665    }
666
667    ALOGV("st_dev  = %llu", sb.st_dev);
668    ALOGV("st_mode = %u", sb.st_mode);
669    ALOGV("st_uid  = %lu", sb.st_uid);
670    ALOGV("st_gid  = %lu", sb.st_gid);
671    ALOGV("st_size = %llu", sb.st_size);
672
673    if (offset >= sb.st_size) {
674        ALOGE("offset error");
675        ::close(fd);
676        return UNKNOWN_ERROR;
677    }
678    if (offset + length > sb.st_size) {
679        length = sb.st_size - offset;
680        ALOGV("calculated length = %lld", length);
681    }
682
683    player_type playerType = MediaPlayerFactory::getPlayerType(this,
684                                                               fd,
685                                                               offset,
686                                                               length);
687    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
688    if (p == NULL) {
689        return NO_INIT;
690    }
691
692    // now set data source
693    setDataSource_post(p, p->setDataSource(fd, offset, length));
694    return mStatus;
695}
696
697status_t MediaPlayerService::Client::setDataSource(
698        const sp<IStreamSource> &source) {
699    // create the right type of player
700    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
701    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
702    if (p == NULL) {
703        return NO_INIT;
704    }
705
706    // now set data source
707    setDataSource_post(p, p->setDataSource(source));
708    return mStatus;
709}
710
711void MediaPlayerService::Client::disconnectNativeWindow() {
712    if (mConnectedWindow != NULL) {
713        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
714                NATIVE_WINDOW_API_MEDIA);
715
716        if (err != OK) {
717            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
718                    strerror(-err), err);
719        }
720    }
721    mConnectedWindow.clear();
722}
723
724status_t MediaPlayerService::Client::setVideoSurfaceTexture(
725        const sp<IGraphicBufferProducer>& bufferProducer)
726{
727    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
728    sp<MediaPlayerBase> p = getPlayer();
729    if (p == 0) return UNKNOWN_ERROR;
730
731    sp<IBinder> binder(bufferProducer == NULL ? NULL :
732            bufferProducer->asBinder());
733    if (mConnectedWindowBinder == binder) {
734        return OK;
735    }
736
737    sp<ANativeWindow> anw;
738    if (bufferProducer != NULL) {
739        anw = new Surface(bufferProducer);
740        status_t err = native_window_api_connect(anw.get(),
741                NATIVE_WINDOW_API_MEDIA);
742
743        if (err != OK) {
744            ALOGE("setVideoSurfaceTexture failed: %d", err);
745            // Note that we must do the reset before disconnecting from the ANW.
746            // Otherwise queue/dequeue calls could be made on the disconnected
747            // ANW, which may result in errors.
748            reset();
749
750            disconnectNativeWindow();
751
752            return err;
753        }
754    }
755
756    // Note that we must set the player's new GraphicBufferProducer before
757    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
758    // on the disconnected ANW, which may result in errors.
759    status_t err = p->setVideoSurfaceTexture(bufferProducer);
760
761    disconnectNativeWindow();
762
763    mConnectedWindow = anw;
764
765    if (err == OK) {
766        mConnectedWindowBinder = binder;
767    } else {
768        disconnectNativeWindow();
769    }
770
771    return err;
772}
773
774status_t MediaPlayerService::Client::invoke(const Parcel& request,
775                                            Parcel *reply)
776{
777    sp<MediaPlayerBase> p = getPlayer();
778    if (p == NULL) return UNKNOWN_ERROR;
779    return p->invoke(request, reply);
780}
781
782// This call doesn't need to access the native player.
783status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
784{
785    status_t status;
786    media::Metadata::Filter allow, drop;
787
788    if (unmarshallFilter(filter, &allow, &status) &&
789        unmarshallFilter(filter, &drop, &status)) {
790        Mutex::Autolock lock(mLock);
791
792        mMetadataAllow = allow;
793        mMetadataDrop = drop;
794    }
795    return status;
796}
797
798status_t MediaPlayerService::Client::getMetadata(
799        bool update_only, bool apply_filter, Parcel *reply)
800{
801    sp<MediaPlayerBase> player = getPlayer();
802    if (player == 0) return UNKNOWN_ERROR;
803
804    status_t status;
805    // Placeholder for the return code, updated by the caller.
806    reply->writeInt32(-1);
807
808    media::Metadata::Filter ids;
809
810    // We don't block notifications while we fetch the data. We clear
811    // mMetadataUpdated first so we don't lose notifications happening
812    // during the rest of this call.
813    {
814        Mutex::Autolock lock(mLock);
815        if (update_only) {
816            ids = mMetadataUpdated;
817        }
818        mMetadataUpdated.clear();
819    }
820
821    media::Metadata metadata(reply);
822
823    metadata.appendHeader();
824    status = player->getMetadata(ids, reply);
825
826    if (status != OK) {
827        metadata.resetParcel();
828        ALOGE("getMetadata failed %d", status);
829        return status;
830    }
831
832    // FIXME: Implement filtering on the result. Not critical since
833    // filtering takes place on the update notifications already. This
834    // would be when all the metadata are fetch and a filter is set.
835
836    // Everything is fine, update the metadata length.
837    metadata.updateLength();
838    return OK;
839}
840
841status_t MediaPlayerService::Client::prepareAsync()
842{
843    ALOGV("[%d] prepareAsync", mConnId);
844    sp<MediaPlayerBase> p = getPlayer();
845    if (p == 0) return UNKNOWN_ERROR;
846    status_t ret = p->prepareAsync();
847#if CALLBACK_ANTAGONIZER
848    ALOGD("start Antagonizer");
849    if (ret == NO_ERROR) mAntagonizer->start();
850#endif
851    return ret;
852}
853
854status_t MediaPlayerService::Client::start()
855{
856    ALOGV("[%d] start", mConnId);
857    sp<MediaPlayerBase> p = getPlayer();
858    if (p == 0) return UNKNOWN_ERROR;
859    p->setLooping(mLoop);
860    return p->start();
861}
862
863status_t MediaPlayerService::Client::stop()
864{
865    ALOGV("[%d] stop", mConnId);
866    sp<MediaPlayerBase> p = getPlayer();
867    if (p == 0) return UNKNOWN_ERROR;
868    return p->stop();
869}
870
871status_t MediaPlayerService::Client::pause()
872{
873    ALOGV("[%d] pause", mConnId);
874    sp<MediaPlayerBase> p = getPlayer();
875    if (p == 0) return UNKNOWN_ERROR;
876    return p->pause();
877}
878
879status_t MediaPlayerService::Client::isPlaying(bool* state)
880{
881    *state = false;
882    sp<MediaPlayerBase> p = getPlayer();
883    if (p == 0) return UNKNOWN_ERROR;
884    *state = p->isPlaying();
885    ALOGV("[%d] isPlaying: %d", mConnId, *state);
886    return NO_ERROR;
887}
888
889status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
890{
891    ALOGV("getCurrentPosition");
892    sp<MediaPlayerBase> p = getPlayer();
893    if (p == 0) return UNKNOWN_ERROR;
894    status_t ret = p->getCurrentPosition(msec);
895    if (ret == NO_ERROR) {
896        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
897    } else {
898        ALOGE("getCurrentPosition returned %d", ret);
899    }
900    return ret;
901}
902
903status_t MediaPlayerService::Client::getDuration(int *msec)
904{
905    ALOGV("getDuration");
906    sp<MediaPlayerBase> p = getPlayer();
907    if (p == 0) return UNKNOWN_ERROR;
908    status_t ret = p->getDuration(msec);
909    if (ret == NO_ERROR) {
910        ALOGV("[%d] getDuration = %d", mConnId, *msec);
911    } else {
912        ALOGE("getDuration returned %d", ret);
913    }
914    return ret;
915}
916
917status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
918    ALOGV("setNextPlayer");
919    Mutex::Autolock l(mLock);
920    sp<Client> c = static_cast<Client*>(player.get());
921    mNextClient = c;
922
923    if (c != NULL) {
924        if (mAudioOutput != NULL) {
925            mAudioOutput->setNextOutput(c->mAudioOutput);
926        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
927            ALOGE("no current audio output");
928        }
929
930        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
931            mPlayer->setNextPlayer(mNextClient->getPlayer());
932        }
933    }
934
935    return OK;
936}
937
938status_t MediaPlayerService::Client::seekTo(int msec)
939{
940    ALOGV("[%d] seekTo(%d)", mConnId, msec);
941    sp<MediaPlayerBase> p = getPlayer();
942    if (p == 0) return UNKNOWN_ERROR;
943    return p->seekTo(msec);
944}
945
946status_t MediaPlayerService::Client::reset()
947{
948    ALOGV("[%d] reset", mConnId);
949    mRetransmitEndpointValid = false;
950    sp<MediaPlayerBase> p = getPlayer();
951    if (p == 0) return UNKNOWN_ERROR;
952    return p->reset();
953}
954
955status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
956{
957    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
958    // TODO: for hardware output, call player instead
959    Mutex::Autolock l(mLock);
960    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
961    return NO_ERROR;
962}
963
964status_t MediaPlayerService::Client::setLooping(int loop)
965{
966    ALOGV("[%d] setLooping(%d)", mConnId, loop);
967    mLoop = loop;
968    sp<MediaPlayerBase> p = getPlayer();
969    if (p != 0) return p->setLooping(loop);
970    return NO_ERROR;
971}
972
973status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
974{
975    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
976
977    // for hardware output, call player instead
978    sp<MediaPlayerBase> p = getPlayer();
979    {
980      Mutex::Autolock l(mLock);
981      if (p != 0 && p->hardwareOutput()) {
982          MediaPlayerHWInterface* hwp =
983                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
984          return hwp->setVolume(leftVolume, rightVolume);
985      } else {
986          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
987          return NO_ERROR;
988      }
989    }
990
991    return NO_ERROR;
992}
993
994status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
995{
996    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
997    Mutex::Autolock l(mLock);
998    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
999    return NO_ERROR;
1000}
1001
1002status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1003{
1004    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1005    Mutex::Autolock l(mLock);
1006    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1007    return NO_ERROR;
1008}
1009
1010status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1011    ALOGV("[%d] setParameter(%d)", mConnId, key);
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014    return p->setParameter(key, request);
1015}
1016
1017status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1018    ALOGV("[%d] getParameter(%d)", mConnId, key);
1019    sp<MediaPlayerBase> p = getPlayer();
1020    if (p == 0) return UNKNOWN_ERROR;
1021    return p->getParameter(key, reply);
1022}
1023
1024status_t MediaPlayerService::Client::setRetransmitEndpoint(
1025        const struct sockaddr_in* endpoint) {
1026
1027    if (NULL != endpoint) {
1028        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1029        uint16_t p = ntohs(endpoint->sin_port);
1030        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1031                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1032    } else {
1033        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1034    }
1035
1036    sp<MediaPlayerBase> p = getPlayer();
1037
1038    // Right now, the only valid time to set a retransmit endpoint is before
1039    // player selection has been made (since the presence or absence of a
1040    // retransmit endpoint is going to determine which player is selected during
1041    // setDataSource).
1042    if (p != 0) return INVALID_OPERATION;
1043
1044    if (NULL != endpoint) {
1045        mRetransmitEndpoint = *endpoint;
1046        mRetransmitEndpointValid = true;
1047    } else {
1048        mRetransmitEndpointValid = false;
1049    }
1050
1051    return NO_ERROR;
1052}
1053
1054status_t MediaPlayerService::Client::getRetransmitEndpoint(
1055        struct sockaddr_in* endpoint)
1056{
1057    if (NULL == endpoint)
1058        return BAD_VALUE;
1059
1060    sp<MediaPlayerBase> p = getPlayer();
1061
1062    if (p != NULL)
1063        return p->getRetransmitEndpoint(endpoint);
1064
1065    if (!mRetransmitEndpointValid)
1066        return NO_INIT;
1067
1068    *endpoint = mRetransmitEndpoint;
1069
1070    return NO_ERROR;
1071}
1072
1073void MediaPlayerService::Client::notify(
1074        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1075{
1076    Client* client = static_cast<Client*>(cookie);
1077    if (client == NULL) {
1078        return;
1079    }
1080
1081    sp<IMediaPlayerClient> c;
1082    {
1083        Mutex::Autolock l(client->mLock);
1084        c = client->mClient;
1085        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1086            if (client->mAudioOutput != NULL)
1087                client->mAudioOutput->switchToNextOutput();
1088            client->mNextClient->start();
1089            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1090        }
1091    }
1092
1093    if (MEDIA_INFO == msg &&
1094        MEDIA_INFO_METADATA_UPDATE == ext1) {
1095        const media::Metadata::Type metadata_type = ext2;
1096
1097        if(client->shouldDropMetadata(metadata_type)) {
1098            return;
1099        }
1100
1101        // Update the list of metadata that have changed. getMetadata
1102        // also access mMetadataUpdated and clears it.
1103        client->addNewMetadataUpdate(metadata_type);
1104    }
1105
1106    if (c != NULL) {
1107        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1108        c->notify(msg, ext1, ext2, obj);
1109    }
1110}
1111
1112
1113bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1114{
1115    Mutex::Autolock lock(mLock);
1116
1117    if (findMetadata(mMetadataDrop, code)) {
1118        return true;
1119    }
1120
1121    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1122        return false;
1123    } else {
1124        return true;
1125    }
1126}
1127
1128
1129void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1130    Mutex::Autolock lock(mLock);
1131    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1132        mMetadataUpdated.add(metadata_type);
1133    }
1134}
1135
1136#if CALLBACK_ANTAGONIZER
1137const int Antagonizer::interval = 10000; // 10 msecs
1138
1139Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1140    mExit(false), mActive(false), mClient(client), mCb(cb)
1141{
1142    createThread(callbackThread, this);
1143}
1144
1145void Antagonizer::kill()
1146{
1147    Mutex::Autolock _l(mLock);
1148    mActive = false;
1149    mExit = true;
1150    mCondition.wait(mLock);
1151}
1152
1153int Antagonizer::callbackThread(void* user)
1154{
1155    ALOGD("Antagonizer started");
1156    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1157    while (!p->mExit) {
1158        if (p->mActive) {
1159            ALOGV("send event");
1160            p->mCb(p->mClient, 0, 0, 0);
1161        }
1162        usleep(interval);
1163    }
1164    Mutex::Autolock _l(p->mLock);
1165    p->mCondition.signal();
1166    ALOGD("Antagonizer stopped");
1167    return 0;
1168}
1169#endif
1170
1171static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1172
1173sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1174{
1175    ALOGV("decode(%s)", url);
1176    sp<MemoryBase> mem;
1177    sp<MediaPlayerBase> player;
1178
1179    // Protect our precious, precious DRMd ringtones by only allowing
1180    // decoding of http, but not filesystem paths or content Uris.
1181    // If the application wants to decode those, it should open a
1182    // filedescriptor for them and use that.
1183    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1184        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1185        return mem;
1186    }
1187
1188    player_type playerType =
1189        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1190    ALOGV("player type = %d", playerType);
1191
1192    // create the right type of player
1193    sp<AudioCache> cache = new AudioCache(url);
1194    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1195    if (player == NULL) goto Exit;
1196    if (player->hardwareOutput()) goto Exit;
1197
1198    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1199
1200    // set data source
1201    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1202
1203    ALOGV("prepare");
1204    player->prepareAsync();
1205
1206    ALOGV("wait for prepare");
1207    if (cache->wait() != NO_ERROR) goto Exit;
1208
1209    ALOGV("start");
1210    player->start();
1211
1212    ALOGV("wait for playback complete");
1213    cache->wait();
1214    // in case of error, return what was successfully decoded.
1215    if (cache->size() == 0) {
1216        goto Exit;
1217    }
1218
1219    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1220    *pSampleRate = cache->sampleRate();
1221    *pNumChannels = cache->channelCount();
1222    *pFormat = cache->format();
1223    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1224
1225Exit:
1226    if (player != 0) player->reset();
1227    return mem;
1228}
1229
1230sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1231{
1232    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1233    sp<MemoryBase> mem;
1234    sp<MediaPlayerBase> player;
1235
1236    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1237                                                               fd,
1238                                                               offset,
1239                                                               length);
1240    ALOGV("player type = %d", playerType);
1241
1242    // create the right type of player
1243    sp<AudioCache> cache = new AudioCache("decode_fd");
1244    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1245    if (player == NULL) goto Exit;
1246    if (player->hardwareOutput()) goto Exit;
1247
1248    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1249
1250    // set data source
1251    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1252
1253    ALOGV("prepare");
1254    player->prepareAsync();
1255
1256    ALOGV("wait for prepare");
1257    if (cache->wait() != NO_ERROR) goto Exit;
1258
1259    ALOGV("start");
1260    player->start();
1261
1262    ALOGV("wait for playback complete");
1263    cache->wait();
1264    // in case of error, return what was successfully decoded.
1265    if (cache->size() == 0) {
1266        goto Exit;
1267    }
1268
1269    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1270    *pSampleRate = cache->sampleRate();
1271    *pNumChannels = cache->channelCount();
1272    *pFormat = cache->format();
1273    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1274
1275Exit:
1276    if (player != 0) player->reset();
1277    ::close(fd);
1278    return mem;
1279}
1280
1281
1282#undef LOG_TAG
1283#define LOG_TAG "AudioSink"
1284MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1285    : mCallback(NULL),
1286      mCallbackCookie(NULL),
1287      mCallbackData(NULL),
1288      mBytesWritten(0),
1289      mSessionId(sessionId),
1290      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1291    ALOGV("AudioOutput(%d)", sessionId);
1292    mTrack = 0;
1293    mRecycledTrack = 0;
1294    mStreamType = AUDIO_STREAM_MUSIC;
1295    mLeftVolume = 1.0;
1296    mRightVolume = 1.0;
1297    mPlaybackRatePermille = 1000;
1298    mSampleRateHz = 0;
1299    mMsecsPerFrame = 0;
1300    mAuxEffectId = 0;
1301    mSendLevel = 0.0;
1302    setMinBufferCount();
1303}
1304
1305MediaPlayerService::AudioOutput::~AudioOutput()
1306{
1307    close();
1308    delete mRecycledTrack;
1309    delete mCallbackData;
1310}
1311
1312void MediaPlayerService::AudioOutput::setMinBufferCount()
1313{
1314    char value[PROPERTY_VALUE_MAX];
1315    if (property_get("ro.kernel.qemu", value, 0)) {
1316        mIsOnEmulator = true;
1317        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1318    }
1319}
1320
1321bool MediaPlayerService::AudioOutput::isOnEmulator()
1322{
1323    setMinBufferCount();
1324    return mIsOnEmulator;
1325}
1326
1327int MediaPlayerService::AudioOutput::getMinBufferCount()
1328{
1329    setMinBufferCount();
1330    return mMinBufferCount;
1331}
1332
1333ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1334{
1335    if (mTrack == 0) return NO_INIT;
1336    return mTrack->frameCount() * frameSize();
1337}
1338
1339ssize_t MediaPlayerService::AudioOutput::frameCount() const
1340{
1341    if (mTrack == 0) return NO_INIT;
1342    return mTrack->frameCount();
1343}
1344
1345ssize_t MediaPlayerService::AudioOutput::channelCount() const
1346{
1347    if (mTrack == 0) return NO_INIT;
1348    return mTrack->channelCount();
1349}
1350
1351ssize_t MediaPlayerService::AudioOutput::frameSize() const
1352{
1353    if (mTrack == 0) return NO_INIT;
1354    return mTrack->frameSize();
1355}
1356
1357uint32_t MediaPlayerService::AudioOutput::latency () const
1358{
1359    if (mTrack == 0) return 0;
1360    return mTrack->latency();
1361}
1362
1363float MediaPlayerService::AudioOutput::msecsPerFrame() const
1364{
1365    return mMsecsPerFrame;
1366}
1367
1368status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1369{
1370    if (mTrack == 0) return NO_INIT;
1371    return mTrack->getPosition(position);
1372}
1373
1374status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1375{
1376    if (mTrack == 0) return NO_INIT;
1377    *frameswritten = mBytesWritten / frameSize();
1378    return OK;
1379}
1380
1381status_t MediaPlayerService::AudioOutput::open(
1382        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1383        audio_format_t format, int bufferCount,
1384        AudioCallback cb, void *cookie,
1385        audio_output_flags_t flags)
1386{
1387    mCallback = cb;
1388    mCallbackCookie = cookie;
1389
1390    // Check argument "bufferCount" against the mininum buffer count
1391    if (bufferCount < mMinBufferCount) {
1392        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1393        bufferCount = mMinBufferCount;
1394
1395    }
1396    ALOGV("open(%u, %d, 0x%x, %d, %d, %d)", sampleRate, channelCount, channelMask,
1397            format, bufferCount, mSessionId);
1398    uint32_t afSampleRate;
1399    size_t afFrameCount;
1400    uint32_t frameCount;
1401
1402    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1403        return NO_INIT;
1404    }
1405    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1406        return NO_INIT;
1407    }
1408
1409    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1410
1411    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1412        channelMask = audio_channel_out_mask_from_count(channelCount);
1413        if (0 == channelMask) {
1414            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1415            return NO_INIT;
1416        }
1417    }
1418
1419    AudioTrack *t;
1420    CallbackData *newcbd = NULL;
1421    if (mCallback != NULL) {
1422        newcbd = new CallbackData(this);
1423        t = new AudioTrack(
1424                mStreamType,
1425                sampleRate,
1426                format,
1427                channelMask,
1428                frameCount,
1429                flags,
1430                CallbackWrapper,
1431                newcbd,
1432                0,  // notification frames
1433                mSessionId);
1434    } else {
1435        t = new AudioTrack(
1436                mStreamType,
1437                sampleRate,
1438                format,
1439                channelMask,
1440                frameCount,
1441                flags,
1442                NULL,
1443                NULL,
1444                0,
1445                mSessionId);
1446    }
1447
1448    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1449        ALOGE("Unable to create audio track");
1450        delete t;
1451        delete newcbd;
1452        return NO_INIT;
1453    }
1454
1455
1456    if (mRecycledTrack) {
1457        // check if the existing track can be reused as-is, or if a new track needs to be created.
1458
1459        bool reuse = true;
1460        if ((mCallbackData == NULL && mCallback != NULL) ||
1461                (mCallbackData != NULL && mCallback == NULL)) {
1462            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1463            ALOGV("can't chain callback and write");
1464            reuse = false;
1465        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1466                (mRecycledTrack->channelCount() != channelCount) ||
1467                (mRecycledTrack->frameCount() != t->frameCount())) {
1468            ALOGV("samplerate, channelcount or framecount differ: %d/%d Hz, %d/%d ch, %d/%d frames",
1469                  mRecycledTrack->getSampleRate(), sampleRate,
1470                  mRecycledTrack->channelCount(), channelCount,
1471                  mRecycledTrack->frameCount(), t->frameCount());
1472            reuse = false;
1473        } else if (flags != mFlags) {
1474            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1475            reuse = false;
1476        }
1477        if (reuse) {
1478            ALOGV("chaining to next output");
1479            close();
1480            mTrack = mRecycledTrack;
1481            mRecycledTrack = NULL;
1482            if (mCallbackData != NULL) {
1483                mCallbackData->setOutput(this);
1484            }
1485            delete t;
1486            delete newcbd;
1487            return OK;
1488        }
1489
1490        // if we're not going to reuse the track, unblock and flush it
1491        if (mCallbackData != NULL) {
1492            mCallbackData->setOutput(NULL);
1493            mCallbackData->endTrackSwitch();
1494        }
1495        mRecycledTrack->flush();
1496        delete mRecycledTrack;
1497        mRecycledTrack = NULL;
1498        delete mCallbackData;
1499        mCallbackData = NULL;
1500        close();
1501    }
1502
1503    mCallbackData = newcbd;
1504    ALOGV("setVolume");
1505    t->setVolume(mLeftVolume, mRightVolume);
1506
1507    mSampleRateHz = sampleRate;
1508    mFlags = flags;
1509    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1510    uint32_t pos;
1511    if (t->getPosition(&pos) == OK) {
1512        mBytesWritten = uint64_t(pos) * t->frameSize();
1513    }
1514    mTrack = t;
1515
1516    status_t res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1517    if (res != NO_ERROR) {
1518        return res;
1519    }
1520    t->setAuxEffectSendLevel(mSendLevel);
1521    return t->attachAuxEffect(mAuxEffectId);;
1522}
1523
1524void MediaPlayerService::AudioOutput::start()
1525{
1526    ALOGV("start");
1527    if (mCallbackData != NULL) {
1528        mCallbackData->endTrackSwitch();
1529    }
1530    if (mTrack) {
1531        mTrack->setVolume(mLeftVolume, mRightVolume);
1532        mTrack->setAuxEffectSendLevel(mSendLevel);
1533        mTrack->start();
1534    }
1535}
1536
1537void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1538    mNextOutput = nextOutput;
1539}
1540
1541
1542void MediaPlayerService::AudioOutput::switchToNextOutput() {
1543    ALOGV("switchToNextOutput");
1544    if (mNextOutput != NULL) {
1545        if (mCallbackData != NULL) {
1546            mCallbackData->beginTrackSwitch();
1547        }
1548        delete mNextOutput->mCallbackData;
1549        mNextOutput->mCallbackData = mCallbackData;
1550        mCallbackData = NULL;
1551        mNextOutput->mRecycledTrack = mTrack;
1552        mTrack = NULL;
1553        mNextOutput->mSampleRateHz = mSampleRateHz;
1554        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1555        mNextOutput->mBytesWritten = mBytesWritten;
1556        mNextOutput->mFlags = mFlags;
1557    }
1558}
1559
1560ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1561{
1562    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1563
1564    //ALOGV("write(%p, %u)", buffer, size);
1565    if (mTrack) {
1566        ssize_t ret = mTrack->write(buffer, size);
1567        mBytesWritten += ret;
1568        return ret;
1569    }
1570    return NO_INIT;
1571}
1572
1573void MediaPlayerService::AudioOutput::stop()
1574{
1575    ALOGV("stop");
1576    if (mTrack) mTrack->stop();
1577}
1578
1579void MediaPlayerService::AudioOutput::flush()
1580{
1581    ALOGV("flush");
1582    if (mTrack) mTrack->flush();
1583}
1584
1585void MediaPlayerService::AudioOutput::pause()
1586{
1587    ALOGV("pause");
1588    if (mTrack) mTrack->pause();
1589}
1590
1591void MediaPlayerService::AudioOutput::close()
1592{
1593    ALOGV("close");
1594    delete mTrack;
1595    mTrack = 0;
1596}
1597
1598void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1599{
1600    ALOGV("setVolume(%f, %f)", left, right);
1601    mLeftVolume = left;
1602    mRightVolume = right;
1603    if (mTrack) {
1604        mTrack->setVolume(left, right);
1605    }
1606}
1607
1608status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1609{
1610    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1611    status_t res = NO_ERROR;
1612    if (mTrack) {
1613        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1614    } else {
1615        res = NO_INIT;
1616    }
1617    mPlaybackRatePermille = ratePermille;
1618    if (mSampleRateHz != 0) {
1619        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1620    }
1621    return res;
1622}
1623
1624status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1625{
1626    ALOGV("setAuxEffectSendLevel(%f)", level);
1627    mSendLevel = level;
1628    if (mTrack) {
1629        return mTrack->setAuxEffectSendLevel(level);
1630    }
1631    return NO_ERROR;
1632}
1633
1634status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1635{
1636    ALOGV("attachAuxEffect(%d)", effectId);
1637    mAuxEffectId = effectId;
1638    if (mTrack) {
1639        return mTrack->attachAuxEffect(effectId);
1640    }
1641    return NO_ERROR;
1642}
1643
1644// static
1645void MediaPlayerService::AudioOutput::CallbackWrapper(
1646        int event, void *cookie, void *info) {
1647    //ALOGV("callbackwrapper");
1648    if (event != AudioTrack::EVENT_MORE_DATA) {
1649        return;
1650    }
1651
1652    CallbackData *data = (CallbackData*)cookie;
1653    data->lock();
1654    AudioOutput *me = data->getOutput();
1655    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1656    if (me == NULL) {
1657        // no output set, likely because the track was scheduled to be reused
1658        // by another player, but the format turned out to be incompatible.
1659        data->unlock();
1660        buffer->size = 0;
1661        return;
1662    }
1663
1664    size_t actualSize = (*me->mCallback)(
1665            me, buffer->raw, buffer->size, me->mCallbackCookie);
1666
1667    if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1668        // We've reached EOS but the audio track is not stopped yet,
1669        // keep playing silence.
1670
1671        memset(buffer->raw, 0, buffer->size);
1672        actualSize = buffer->size;
1673    }
1674
1675    buffer->size = actualSize;
1676    data->unlock();
1677}
1678
1679int MediaPlayerService::AudioOutput::getSessionId() const
1680{
1681    return mSessionId;
1682}
1683
1684#undef LOG_TAG
1685#define LOG_TAG "AudioCache"
1686MediaPlayerService::AudioCache::AudioCache(const char* name) :
1687    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1688    mError(NO_ERROR), mCommandComplete(false)
1689{
1690    // create ashmem heap
1691    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1692}
1693
1694uint32_t MediaPlayerService::AudioCache::latency () const
1695{
1696    return 0;
1697}
1698
1699float MediaPlayerService::AudioCache::msecsPerFrame() const
1700{
1701    return mMsecsPerFrame;
1702}
1703
1704status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1705{
1706    if (position == 0) return BAD_VALUE;
1707    *position = mSize;
1708    return NO_ERROR;
1709}
1710
1711status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1712{
1713    if (written == 0) return BAD_VALUE;
1714    *written = mSize;
1715    return NO_ERROR;
1716}
1717
1718////////////////////////////////////////////////////////////////////////////////
1719
1720struct CallbackThread : public Thread {
1721    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1722                   MediaPlayerBase::AudioSink::AudioCallback cb,
1723                   void *cookie);
1724
1725protected:
1726    virtual ~CallbackThread();
1727
1728    virtual bool threadLoop();
1729
1730private:
1731    wp<MediaPlayerBase::AudioSink> mSink;
1732    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1733    void *mCookie;
1734    void *mBuffer;
1735    size_t mBufferSize;
1736
1737    CallbackThread(const CallbackThread &);
1738    CallbackThread &operator=(const CallbackThread &);
1739};
1740
1741CallbackThread::CallbackThread(
1742        const wp<MediaPlayerBase::AudioSink> &sink,
1743        MediaPlayerBase::AudioSink::AudioCallback cb,
1744        void *cookie)
1745    : mSink(sink),
1746      mCallback(cb),
1747      mCookie(cookie),
1748      mBuffer(NULL),
1749      mBufferSize(0) {
1750}
1751
1752CallbackThread::~CallbackThread() {
1753    if (mBuffer) {
1754        free(mBuffer);
1755        mBuffer = NULL;
1756    }
1757}
1758
1759bool CallbackThread::threadLoop() {
1760    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1761    if (sink == NULL) {
1762        return false;
1763    }
1764
1765    if (mBuffer == NULL) {
1766        mBufferSize = sink->bufferSize();
1767        mBuffer = malloc(mBufferSize);
1768    }
1769
1770    size_t actualSize =
1771        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1772
1773    if (actualSize > 0) {
1774        sink->write(mBuffer, actualSize);
1775    }
1776
1777    return true;
1778}
1779
1780////////////////////////////////////////////////////////////////////////////////
1781
1782status_t MediaPlayerService::AudioCache::open(
1783        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1784        audio_format_t format, int bufferCount,
1785        AudioCallback cb, void *cookie, audio_output_flags_t flags)
1786{
1787    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
1788    if (mHeap->getHeapID() < 0) {
1789        return NO_INIT;
1790    }
1791
1792    mSampleRate = sampleRate;
1793    mChannelCount = (uint16_t)channelCount;
1794    mFormat = format;
1795    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1796
1797    if (cb != NULL) {
1798        mCallbackThread = new CallbackThread(this, cb, cookie);
1799    }
1800    return NO_ERROR;
1801}
1802
1803void MediaPlayerService::AudioCache::start() {
1804    if (mCallbackThread != NULL) {
1805        mCallbackThread->run("AudioCache callback");
1806    }
1807}
1808
1809void MediaPlayerService::AudioCache::stop() {
1810    if (mCallbackThread != NULL) {
1811        mCallbackThread->requestExitAndWait();
1812    }
1813}
1814
1815ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1816{
1817    ALOGV("write(%p, %u)", buffer, size);
1818    if ((buffer == 0) || (size == 0)) return size;
1819
1820    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1821    if (p == NULL) return NO_INIT;
1822    p += mSize;
1823    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1824    if (mSize + size > mHeap->getSize()) {
1825        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1826        size = mHeap->getSize() - mSize;
1827    }
1828    memcpy(p, buffer, size);
1829    mSize += size;
1830    return size;
1831}
1832
1833// call with lock held
1834status_t MediaPlayerService::AudioCache::wait()
1835{
1836    Mutex::Autolock lock(mLock);
1837    while (!mCommandComplete) {
1838        mSignal.wait(mLock);
1839    }
1840    mCommandComplete = false;
1841
1842    if (mError == NO_ERROR) {
1843        ALOGV("wait - success");
1844    } else {
1845        ALOGV("wait - error");
1846    }
1847    return mError;
1848}
1849
1850void MediaPlayerService::AudioCache::notify(
1851        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1852{
1853    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1854    AudioCache* p = static_cast<AudioCache*>(cookie);
1855
1856    // ignore buffering messages
1857    switch (msg)
1858    {
1859    case MEDIA_ERROR:
1860        ALOGE("Error %d, %d occurred", ext1, ext2);
1861        p->mError = ext1;
1862        break;
1863    case MEDIA_PREPARED:
1864        ALOGV("prepared");
1865        break;
1866    case MEDIA_PLAYBACK_COMPLETE:
1867        ALOGV("playback complete");
1868        break;
1869    default:
1870        ALOGV("ignored");
1871        return;
1872    }
1873
1874    // wake up thread
1875    Mutex::Autolock lock(p->mLock);
1876    p->mCommandComplete = true;
1877    p->mSignal.signal();
1878}
1879
1880int MediaPlayerService::AudioCache::getSessionId() const
1881{
1882    return 0;
1883}
1884
1885void MediaPlayerService::addBatteryData(uint32_t params)
1886{
1887    Mutex::Autolock lock(mLock);
1888
1889    int32_t time = systemTime() / 1000000L;
1890
1891    // change audio output devices. This notification comes from AudioFlinger
1892    if ((params & kBatteryDataSpeakerOn)
1893            || (params & kBatteryDataOtherAudioDeviceOn)) {
1894
1895        int deviceOn[NUM_AUDIO_DEVICES];
1896        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1897            deviceOn[i] = 0;
1898        }
1899
1900        if ((params & kBatteryDataSpeakerOn)
1901                && (params & kBatteryDataOtherAudioDeviceOn)) {
1902            deviceOn[SPEAKER_AND_OTHER] = 1;
1903        } else if (params & kBatteryDataSpeakerOn) {
1904            deviceOn[SPEAKER] = 1;
1905        } else {
1906            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1907        }
1908
1909        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1910            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1911
1912                if (mBatteryAudio.refCount > 0) { // if playing audio
1913                    if (!deviceOn[i]) {
1914                        mBatteryAudio.lastTime[i] += time;
1915                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1916                        mBatteryAudio.lastTime[i] = 0;
1917                    } else {
1918                        mBatteryAudio.lastTime[i] = 0 - time;
1919                    }
1920                }
1921
1922                mBatteryAudio.deviceOn[i] = deviceOn[i];
1923            }
1924        }
1925        return;
1926    }
1927
1928    // an sudio stream is started
1929    if (params & kBatteryDataAudioFlingerStart) {
1930        // record the start time only if currently no other audio
1931        // is being played
1932        if (mBatteryAudio.refCount == 0) {
1933            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1934                if (mBatteryAudio.deviceOn[i]) {
1935                    mBatteryAudio.lastTime[i] -= time;
1936                }
1937            }
1938        }
1939
1940        mBatteryAudio.refCount ++;
1941        return;
1942
1943    } else if (params & kBatteryDataAudioFlingerStop) {
1944        if (mBatteryAudio.refCount <= 0) {
1945            ALOGW("Battery track warning: refCount is <= 0");
1946            return;
1947        }
1948
1949        // record the stop time only if currently this is the only
1950        // audio being played
1951        if (mBatteryAudio.refCount == 1) {
1952            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1953                if (mBatteryAudio.deviceOn[i]) {
1954                    mBatteryAudio.lastTime[i] += time;
1955                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1956                    mBatteryAudio.lastTime[i] = 0;
1957                }
1958            }
1959        }
1960
1961        mBatteryAudio.refCount --;
1962        return;
1963    }
1964
1965    int uid = IPCThreadState::self()->getCallingUid();
1966    if (uid == AID_MEDIA) {
1967        return;
1968    }
1969    int index = mBatteryData.indexOfKey(uid);
1970
1971    if (index < 0) { // create a new entry for this UID
1972        BatteryUsageInfo info;
1973        info.audioTotalTime = 0;
1974        info.videoTotalTime = 0;
1975        info.audioLastTime = 0;
1976        info.videoLastTime = 0;
1977        info.refCount = 0;
1978
1979        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1980            ALOGE("Battery track error: no memory for new app");
1981            return;
1982        }
1983    }
1984
1985    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1986
1987    if (params & kBatteryDataCodecStarted) {
1988        if (params & kBatteryDataTrackAudio) {
1989            info.audioLastTime -= time;
1990            info.refCount ++;
1991        }
1992        if (params & kBatteryDataTrackVideo) {
1993            info.videoLastTime -= time;
1994            info.refCount ++;
1995        }
1996    } else {
1997        if (info.refCount == 0) {
1998            ALOGW("Battery track warning: refCount is already 0");
1999            return;
2000        } else if (info.refCount < 0) {
2001            ALOGE("Battery track error: refCount < 0");
2002            mBatteryData.removeItem(uid);
2003            return;
2004        }
2005
2006        if (params & kBatteryDataTrackAudio) {
2007            info.audioLastTime += time;
2008            info.refCount --;
2009        }
2010        if (params & kBatteryDataTrackVideo) {
2011            info.videoLastTime += time;
2012            info.refCount --;
2013        }
2014
2015        // no stream is being played by this UID
2016        if (info.refCount == 0) {
2017            info.audioTotalTime += info.audioLastTime;
2018            info.audioLastTime = 0;
2019            info.videoTotalTime += info.videoLastTime;
2020            info.videoLastTime = 0;
2021        }
2022    }
2023}
2024
2025status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2026    Mutex::Autolock lock(mLock);
2027
2028    // audio output devices usage
2029    int32_t time = systemTime() / 1000000L; //in ms
2030    int32_t totalTime;
2031
2032    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2033        totalTime = mBatteryAudio.totalTime[i];
2034
2035        if (mBatteryAudio.deviceOn[i]
2036            && (mBatteryAudio.lastTime[i] != 0)) {
2037                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2038                totalTime += tmpTime;
2039        }
2040
2041        reply->writeInt32(totalTime);
2042        // reset the total time
2043        mBatteryAudio.totalTime[i] = 0;
2044   }
2045
2046    // codec usage
2047    BatteryUsageInfo info;
2048    int size = mBatteryData.size();
2049
2050    reply->writeInt32(size);
2051    int i = 0;
2052
2053    while (i < size) {
2054        info = mBatteryData.valueAt(i);
2055
2056        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2057        reply->writeInt32(info.audioTotalTime);
2058        reply->writeInt32(info.videoTotalTime);
2059
2060        info.audioTotalTime = 0;
2061        info.videoTotalTime = 0;
2062
2063        // remove the UID entry where no stream is being played
2064        if (info.refCount <= 0) {
2065            mBatteryData.removeItemsAt(i);
2066            size --;
2067            i --;
2068        }
2069        i++;
2070    }
2071    return NO_ERROR;
2072}
2073} // namespace android
2074