MediaPlayerService.cpp revision 761defc341c5ce9019a42919c441f035f665ec0d 
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 <android_runtime/ActivityManager.h>
38
39#include <binder/IPCThreadState.h>
40#include <binder/IServiceManager.h>
41#include <binder/MemoryHeapBase.h>
42#include <binder/MemoryBase.h>
43#include <gui/SurfaceTextureClient.h>
44#include <utils/Errors.h>  // for status_t
45#include <utils/String8.h>
46#include <utils/SystemClock.h>
47#include <utils/Vector.h>
48#include <cutils/properties.h>
49
50#include <media/MediaPlayerInterface.h>
51#include <media/mediarecorder.h>
52#include <media/MediaMetadataRetrieverInterface.h>
53#include <media/Metadata.h>
54#include <media/AudioTrack.h>
55#include <media/MemoryLeakTrackUtil.h>
56#include <media/stagefright/MediaErrors.h>
57
58#include <system/audio.h>
59
60#include <private/android_filesystem_config.h>
61
62#include "MediaRecorderClient.h"
63#include "MediaPlayerService.h"
64#include "MetadataRetrieverClient.h"
65
66#include "MidiFile.h"
67#include "TestPlayerStub.h"
68#include "StagefrightPlayer.h"
69#include "nuplayer/NuPlayerDriver.h"
70
71#include <OMX.h>
72
73namespace android {
74sp<MediaPlayerBase> createAAH_TXPlayer();
75sp<MediaPlayerBase> createAAH_RXPlayer();
76}
77
78namespace {
79using android::media::Metadata;
80using android::status_t;
81using android::OK;
82using android::BAD_VALUE;
83using android::NOT_ENOUGH_DATA;
84using android::Parcel;
85
86// Max number of entries in the filter.
87const int kMaxFilterSize = 64;  // I pulled that out of thin air.
88
89// FIXME: Move all the metadata related function in the Metadata.cpp
90
91
92// Unmarshall a filter from a Parcel.
93// Filter format in a parcel:
94//
95//  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
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       number of entries (n)                   |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 1                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101// |                       metadata type 2                         |
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103//  ....
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       metadata type n                         |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107//
108// @param p Parcel that should start with a filter.
109// @param[out] filter On exit contains the list of metadata type to be
110//                    filtered.
111// @param[out] status On exit contains the status code to be returned.
112// @return true if the parcel starts with a valid filter.
113bool unmarshallFilter(const Parcel& p,
114                      Metadata::Filter *filter,
115                      status_t *status)
116{
117    int32_t val;
118    if (p.readInt32(&val) != OK)
119    {
120        ALOGE("Failed to read filter's length");
121        *status = NOT_ENOUGH_DATA;
122        return false;
123    }
124
125    if( val > kMaxFilterSize || val < 0)
126    {
127        ALOGE("Invalid filter len %d", val);
128        *status = BAD_VALUE;
129        return false;
130    }
131
132    const size_t num = val;
133
134    filter->clear();
135    filter->setCapacity(num);
136
137    size_t size = num * sizeof(Metadata::Type);
138
139
140    if (p.dataAvail() < size)
141    {
142        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
143        *status = NOT_ENOUGH_DATA;
144        return false;
145    }
146
147    const Metadata::Type *data =
148            static_cast<const Metadata::Type*>(p.readInplace(size));
149
150    if (NULL == data)
151    {
152        ALOGE("Filter had no data");
153        *status = BAD_VALUE;
154        return false;
155    }
156
157    // TODO: The stl impl of vector would be more efficient here
158    // because it degenerates into a memcpy on pod types. Try to
159    // replace later or use stl::set.
160    for (size_t i = 0; i < num; ++i)
161    {
162        filter->add(*data);
163        ++data;
164    }
165    *status = OK;
166    return true;
167}
168
169// @param filter Of metadata type.
170// @param val To be searched.
171// @return true if a match was found.
172bool findMetadata(const Metadata::Filter& filter, const int32_t val)
173{
174    // Deal with empty and ANY right away
175    if (filter.isEmpty()) return false;
176    if (filter[0] == Metadata::kAny) return true;
177
178    return filter.indexOf(val) >= 0;
179}
180
181}  // anonymous namespace
182
183
184namespace android {
185
186static bool checkPermission(const char* permissionString) {
187#ifndef HAVE_ANDROID_OS
188    return true;
189#endif
190    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
191    bool ok = checkCallingPermission(String16(permissionString));
192    if (!ok) ALOGE("Request requires %s", permissionString);
193    return ok;
194}
195
196// TODO: Temp hack until we can register players
197typedef struct {
198    const char *extension;
199    const player_type playertype;
200} extmap;
201extmap FILE_EXTS [] =  {
202        {".mid", SONIVOX_PLAYER},
203        {".midi", SONIVOX_PLAYER},
204        {".smf", SONIVOX_PLAYER},
205        {".xmf", SONIVOX_PLAYER},
206        {".imy", SONIVOX_PLAYER},
207        {".rtttl", SONIVOX_PLAYER},
208        {".rtx", SONIVOX_PLAYER},
209        {".ota", SONIVOX_PLAYER},
210};
211
212// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
213/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
214/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
215
216void MediaPlayerService::instantiate() {
217    defaultServiceManager()->addService(
218            String16("media.player"), new MediaPlayerService());
219}
220
221MediaPlayerService::MediaPlayerService()
222{
223    ALOGV("MediaPlayerService created");
224    mNextConnId = 1;
225
226    mBatteryAudio.refCount = 0;
227    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
228        mBatteryAudio.deviceOn[i] = 0;
229        mBatteryAudio.lastTime[i] = 0;
230        mBatteryAudio.totalTime[i] = 0;
231    }
232    // speaker is on by default
233    mBatteryAudio.deviceOn[SPEAKER] = 1;
234}
235
236MediaPlayerService::~MediaPlayerService()
237{
238    ALOGV("MediaPlayerService destroyed");
239}
240
241sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
242{
243    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
244    wp<MediaRecorderClient> w = recorder;
245    Mutex::Autolock lock(mLock);
246    mMediaRecorderClients.add(w);
247    ALOGV("Create new media recorder client from pid %d", pid);
248    return recorder;
249}
250
251void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
252{
253    Mutex::Autolock lock(mLock);
254    mMediaRecorderClients.remove(client);
255    ALOGV("Delete media recorder client");
256}
257
258sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
259{
260    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
261    ALOGV("Create new media retriever from pid %d", pid);
262    return retriever;
263}
264
265sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
266        int audioSessionId)
267{
268    int32_t connId = android_atomic_inc(&mNextConnId);
269
270    sp<Client> c = new Client(
271            this, pid, connId, client, audioSessionId,
272            IPCThreadState::self()->getCallingUid());
273
274    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
275         IPCThreadState::self()->getCallingUid());
276
277    wp<Client> w = c;
278    {
279        Mutex::Autolock lock(mLock);
280        mClients.add(w);
281    }
282    return c;
283}
284
285sp<IOMX> MediaPlayerService::getOMX() {
286    Mutex::Autolock autoLock(mLock);
287
288    if (mOMX.get() == NULL) {
289        mOMX = new OMX;
290    }
291
292    return mOMX;
293}
294
295status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
296{
297    const size_t SIZE = 256;
298    char buffer[SIZE];
299    String8 result;
300
301    result.append(" AudioCache\n");
302    if (mHeap != 0) {
303        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
304                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
305        result.append(buffer);
306    }
307    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
308            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
309    result.append(buffer);
310    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
311            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
312    result.append(buffer);
313    ::write(fd, result.string(), result.size());
314    return NO_ERROR;
315}
316
317status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
318{
319    const size_t SIZE = 256;
320    char buffer[SIZE];
321    String8 result;
322
323    result.append(" AudioOutput\n");
324    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
325            mStreamType, mLeftVolume, mRightVolume);
326    result.append(buffer);
327    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
328            mMsecsPerFrame, mLatency);
329    result.append(buffer);
330    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
331            mAuxEffectId, mSendLevel);
332    result.append(buffer);
333
334    ::write(fd, result.string(), result.size());
335    if (mTrack != 0) {
336        mTrack->dump(fd, args);
337    }
338    return NO_ERROR;
339}
340
341status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
342{
343    const size_t SIZE = 256;
344    char buffer[SIZE];
345    String8 result;
346    result.append(" Client\n");
347    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
348            mPid, mConnId, mStatus, mLoop?"true": "false");
349    result.append(buffer);
350    write(fd, result.string(), result.size());
351    if (mPlayer != NULL) {
352        mPlayer->dump(fd, args);
353    }
354    if (mAudioOutput != 0) {
355        mAudioOutput->dump(fd, args);
356    }
357    write(fd, "\n", 1);
358    return NO_ERROR;
359}
360
361status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
362{
363    const size_t SIZE = 256;
364    char buffer[SIZE];
365    String8 result;
366    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
367        snprintf(buffer, SIZE, "Permission Denial: "
368                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
369                IPCThreadState::self()->getCallingPid(),
370                IPCThreadState::self()->getCallingUid());
371        result.append(buffer);
372    } else {
373        Mutex::Autolock lock(mLock);
374        for (int i = 0, n = mClients.size(); i < n; ++i) {
375            sp<Client> c = mClients[i].promote();
376            if (c != 0) c->dump(fd, args);
377        }
378        if (mMediaRecorderClients.size() == 0) {
379                result.append(" No media recorder client\n\n");
380        } else {
381            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
382                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
383                if (c != 0) {
384                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
385                    result.append(buffer);
386                    write(fd, result.string(), result.size());
387                    result = "\n";
388                    c->dump(fd, args);
389                }
390            }
391        }
392
393        result.append(" Files opened and/or mapped:\n");
394        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
395        FILE *f = fopen(buffer, "r");
396        if (f) {
397            while (!feof(f)) {
398                fgets(buffer, SIZE, f);
399                if (strstr(buffer, " /mnt/sdcard/") ||
400                    strstr(buffer, " /system/sounds/") ||
401                    strstr(buffer, " /data/") ||
402                    strstr(buffer, " /system/media/")) {
403                    result.append("  ");
404                    result.append(buffer);
405                }
406            }
407            fclose(f);
408        } else {
409            result.append("couldn't open ");
410            result.append(buffer);
411            result.append("\n");
412        }
413
414        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
415        DIR *d = opendir(buffer);
416        if (d) {
417            struct dirent *ent;
418            while((ent = readdir(d)) != NULL) {
419                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
420                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
421                    struct stat s;
422                    if (lstat(buffer, &s) == 0) {
423                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
424                            char linkto[256];
425                            int len = readlink(buffer, linkto, sizeof(linkto));
426                            if(len > 0) {
427                                if(len > 255) {
428                                    linkto[252] = '.';
429                                    linkto[253] = '.';
430                                    linkto[254] = '.';
431                                    linkto[255] = 0;
432                                } else {
433                                    linkto[len] = 0;
434                                }
435                                if (strstr(linkto, "/mnt/sdcard/") == linkto ||
436                                    strstr(linkto, "/system/sounds/") == linkto ||
437                                    strstr(linkto, "/data/") == linkto ||
438                                    strstr(linkto, "/system/media/") == linkto) {
439                                    result.append("  ");
440                                    result.append(buffer);
441                                    result.append(" -> ");
442                                    result.append(linkto);
443                                    result.append("\n");
444                                }
445                            }
446                        } else {
447                            result.append("  unexpected type for ");
448                            result.append(buffer);
449                            result.append("\n");
450                        }
451                    }
452                }
453            }
454            closedir(d);
455        } else {
456            result.append("couldn't open ");
457            result.append(buffer);
458            result.append("\n");
459        }
460
461        bool dumpMem = false;
462        for (size_t i = 0; i < args.size(); i++) {
463            if (args[i] == String16("-m")) {
464                dumpMem = true;
465            }
466        }
467        if (dumpMem) {
468            dumpMemoryAddresses(fd);
469        }
470    }
471    write(fd, result.string(), result.size());
472    return NO_ERROR;
473}
474
475void MediaPlayerService::removeClient(wp<Client> client)
476{
477    Mutex::Autolock lock(mLock);
478    mClients.remove(client);
479}
480
481MediaPlayerService::Client::Client(
482        const sp<MediaPlayerService>& service, pid_t pid,
483        int32_t connId, const sp<IMediaPlayerClient>& client,
484        int audioSessionId, uid_t uid)
485{
486    ALOGV("Client(%d) constructor", connId);
487    mPid = pid;
488    mConnId = connId;
489    mService = service;
490    mClient = client;
491    mLoop = false;
492    mStatus = NO_INIT;
493    mAudioSessionId = audioSessionId;
494    mUID = uid;
495
496#if CALLBACK_ANTAGONIZER
497    ALOGD("create Antagonizer");
498    mAntagonizer = new Antagonizer(notify, this);
499#endif
500}
501
502MediaPlayerService::Client::~Client()
503{
504    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
505    mAudioOutput.clear();
506    wp<Client> client(this);
507    disconnect();
508    mService->removeClient(client);
509}
510
511void MediaPlayerService::Client::disconnect()
512{
513    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
514    // grab local reference and clear main reference to prevent future
515    // access to object
516    sp<MediaPlayerBase> p;
517    {
518        Mutex::Autolock l(mLock);
519        p = mPlayer;
520    }
521    mClient.clear();
522
523    mPlayer.clear();
524
525    // clear the notification to prevent callbacks to dead client
526    // and reset the player. We assume the player will serialize
527    // access to itself if necessary.
528    if (p != 0) {
529        p->setNotifyCallback(0, 0);
530#if CALLBACK_ANTAGONIZER
531        ALOGD("kill Antagonizer");
532        mAntagonizer->kill();
533#endif
534        p->reset();
535    }
536
537    disconnectNativeWindow();
538
539    IPCThreadState::self()->flushCommands();
540}
541
542static player_type getDefaultPlayerType() {
543    return STAGEFRIGHT_PLAYER;
544}
545
546player_type getPlayerType(int fd, int64_t offset, int64_t length)
547{
548    char buf[20];
549    lseek(fd, offset, SEEK_SET);
550    read(fd, buf, sizeof(buf));
551    lseek(fd, offset, SEEK_SET);
552
553    long ident = *((long*)buf);
554
555    // Ogg vorbis?
556    if (ident == 0x5367674f) // 'OggS'
557        return STAGEFRIGHT_PLAYER;
558
559    // Some kind of MIDI?
560    EAS_DATA_HANDLE easdata;
561    if (EAS_Init(&easdata) == EAS_SUCCESS) {
562        EAS_FILE locator;
563        locator.path = NULL;
564        locator.fd = fd;
565        locator.offset = offset;
566        locator.length = length;
567        EAS_HANDLE  eashandle;
568        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
569            EAS_CloseFile(easdata, eashandle);
570            EAS_Shutdown(easdata);
571            return SONIVOX_PLAYER;
572        }
573        EAS_Shutdown(easdata);
574    }
575
576    return getDefaultPlayerType();
577}
578
579player_type getPlayerType(const char* url)
580{
581    if (TestPlayerStub::canBeUsed(url)) {
582        return TEST_PLAYER;
583    }
584
585    if (!strncasecmp("http://", url, 7)
586            || !strncasecmp("https://", url, 8)) {
587        size_t len = strlen(url);
588        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
589            return NU_PLAYER;
590        }
591
592        if (strstr(url,"m3u8")) {
593            return NU_PLAYER;
594        }
595    }
596
597    if (!strncasecmp("rtsp://", url, 7)) {
598        return NU_PLAYER;
599    }
600
601    if (!strncasecmp("aahRX://", url, 8)) {
602        return AAH_RX_PLAYER;
603    }
604
605    if (!strncasecmp("aahTX://", url, 8)) {
606        return AAH_TX_PLAYER;
607    }
608
609    // use MidiFile for MIDI extensions
610    int lenURL = strlen(url);
611    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
612        int len = strlen(FILE_EXTS[i].extension);
613        int start = lenURL - len;
614        if (start > 0) {
615            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
616                return FILE_EXTS[i].playertype;
617            }
618        }
619    }
620
621    return getDefaultPlayerType();
622}
623
624static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
625        notify_callback_f notifyFunc)
626{
627    sp<MediaPlayerBase> p;
628    switch (playerType) {
629        case SONIVOX_PLAYER:
630            ALOGV(" create MidiFile");
631            p = new MidiFile();
632            break;
633        case STAGEFRIGHT_PLAYER:
634            ALOGV(" create StagefrightPlayer");
635            p = new StagefrightPlayer;
636            break;
637        case NU_PLAYER:
638            ALOGV(" create NuPlayer");
639            p = new NuPlayerDriver;
640            break;
641        case TEST_PLAYER:
642            ALOGV("Create Test Player stub");
643            p = new TestPlayerStub();
644            break;
645        case AAH_RX_PLAYER:
646            ALOGV(" create A@H RX Player");
647            p = createAAH_RXPlayer();
648            break;
649        case AAH_TX_PLAYER:
650            ALOGV(" create A@H TX Player");
651            p = createAAH_TXPlayer();
652            break;
653        default:
654            ALOGE("Unknown player type: %d", playerType);
655            return NULL;
656    }
657    if (p != NULL) {
658        if (p->initCheck() == NO_ERROR) {
659            p->setNotifyCallback(cookie, notifyFunc);
660        } else {
661            p.clear();
662        }
663    }
664    if (p == NULL) {
665        ALOGE("Failed to create player object");
666    }
667    return p;
668}
669
670sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
671{
672    // determine if we have the right player type
673    sp<MediaPlayerBase> p = mPlayer;
674    if ((p != NULL) && (p->playerType() != playerType)) {
675        ALOGV("delete player");
676        p.clear();
677    }
678    if (p == NULL) {
679        p = android::createPlayer(playerType, this, notify);
680    }
681
682    if (p != NULL) {
683        p->setUID(mUID);
684    }
685
686    return p;
687}
688
689status_t MediaPlayerService::Client::setDataSource(
690        const char *url, const KeyedVector<String8, String8> *headers)
691{
692    ALOGV("setDataSource(%s)", url);
693    if (url == NULL)
694        return UNKNOWN_ERROR;
695
696    if ((strncmp(url, "http://", 7) == 0) ||
697        (strncmp(url, "https://", 8) == 0) ||
698        (strncmp(url, "rtsp://", 7) == 0)) {
699        if (!checkPermission("android.permission.INTERNET")) {
700            return PERMISSION_DENIED;
701        }
702    }
703
704    if (strncmp(url, "content://", 10) == 0) {
705        // get a filedescriptor for the content Uri and
706        // pass it to the setDataSource(fd) method
707
708        String16 url16(url);
709        int fd = android::openContentProviderFile(url16);
710        if (fd < 0)
711        {
712            ALOGE("Couldn't open fd for %s", url);
713            return UNKNOWN_ERROR;
714        }
715        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
716        close(fd);
717        return mStatus;
718    } else {
719        player_type playerType = getPlayerType(url);
720        ALOGV("player type = %d", playerType);
721
722        // create the right type of player
723        sp<MediaPlayerBase> p = createPlayer(playerType);
724        if (p == NULL) return NO_INIT;
725
726        if (!p->hardwareOutput()) {
727            mAudioOutput = new AudioOutput(mAudioSessionId);
728            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
729        }
730
731        // now set data source
732        ALOGV(" setDataSource");
733        mStatus = p->setDataSource(url, headers);
734        if (mStatus == NO_ERROR) {
735            mPlayer = p;
736        } else {
737            ALOGE("  error: %d", mStatus);
738        }
739        return mStatus;
740    }
741}
742
743status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
744{
745    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
746    struct stat sb;
747    int ret = fstat(fd, &sb);
748    if (ret != 0) {
749        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
750        return UNKNOWN_ERROR;
751    }
752
753    ALOGV("st_dev  = %llu", sb.st_dev);
754    ALOGV("st_mode = %u", sb.st_mode);
755    ALOGV("st_uid  = %lu", sb.st_uid);
756    ALOGV("st_gid  = %lu", sb.st_gid);
757    ALOGV("st_size = %llu", sb.st_size);
758
759    if (offset >= sb.st_size) {
760        ALOGE("offset error");
761        ::close(fd);
762        return UNKNOWN_ERROR;
763    }
764    if (offset + length > sb.st_size) {
765        length = sb.st_size - offset;
766        ALOGV("calculated length = %lld", length);
767    }
768
769    player_type playerType = getPlayerType(fd, offset, length);
770    ALOGV("player type = %d", playerType);
771
772    // create the right type of player
773    sp<MediaPlayerBase> p = createPlayer(playerType);
774    if (p == NULL) return NO_INIT;
775
776    if (!p->hardwareOutput()) {
777        mAudioOutput = new AudioOutput(mAudioSessionId);
778        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
779    }
780
781    // now set data source
782    mStatus = p->setDataSource(fd, offset, length);
783    if (mStatus == NO_ERROR) mPlayer = p;
784
785    return mStatus;
786}
787
788status_t MediaPlayerService::Client::setDataSource(
789        const sp<IStreamSource> &source) {
790    // create the right type of player
791    sp<MediaPlayerBase> p = createPlayer(NU_PLAYER);
792
793    if (p == NULL) {
794        return NO_INIT;
795    }
796
797    if (!p->hardwareOutput()) {
798        mAudioOutput = new AudioOutput(mAudioSessionId);
799        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
800    }
801
802    // now set data source
803    mStatus = p->setDataSource(source);
804
805    if (mStatus == OK) {
806        mPlayer = p;
807    }
808
809    return mStatus;
810}
811
812void MediaPlayerService::Client::disconnectNativeWindow() {
813    if (mConnectedWindow != NULL) {
814        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
815                NATIVE_WINDOW_API_MEDIA);
816
817        if (err != OK) {
818            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
819                    strerror(-err), err);
820        }
821    }
822    mConnectedWindow.clear();
823}
824
825status_t MediaPlayerService::Client::setVideoSurfaceTexture(
826        const sp<ISurfaceTexture>& surfaceTexture)
827{
828    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, surfaceTexture.get());
829    sp<MediaPlayerBase> p = getPlayer();
830    if (p == 0) return UNKNOWN_ERROR;
831
832    sp<IBinder> binder(surfaceTexture == NULL ? NULL :
833            surfaceTexture->asBinder());
834    if (mConnectedWindowBinder == binder) {
835        return OK;
836    }
837
838    sp<ANativeWindow> anw;
839    if (surfaceTexture != NULL) {
840        anw = new SurfaceTextureClient(surfaceTexture);
841        status_t err = native_window_api_connect(anw.get(),
842                NATIVE_WINDOW_API_MEDIA);
843
844        if (err != OK) {
845            ALOGE("setVideoSurfaceTexture failed: %d", err);
846            // Note that we must do the reset before disconnecting from the ANW.
847            // Otherwise queue/dequeue calls could be made on the disconnected
848            // ANW, which may result in errors.
849            reset();
850
851            disconnectNativeWindow();
852
853            return err;
854        }
855    }
856
857    // Note that we must set the player's new SurfaceTexture before
858    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
859    // on the disconnected ANW, which may result in errors.
860    status_t err = p->setVideoSurfaceTexture(surfaceTexture);
861
862    disconnectNativeWindow();
863
864    mConnectedWindow = anw;
865
866    if (err == OK) {
867        mConnectedWindowBinder = binder;
868    } else {
869        disconnectNativeWindow();
870    }
871
872    return err;
873}
874
875status_t MediaPlayerService::Client::invoke(const Parcel& request,
876                                            Parcel *reply)
877{
878    sp<MediaPlayerBase> p = getPlayer();
879    if (p == NULL) return UNKNOWN_ERROR;
880    return p->invoke(request, reply);
881}
882
883// This call doesn't need to access the native player.
884status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
885{
886    status_t status;
887    media::Metadata::Filter allow, drop;
888
889    if (unmarshallFilter(filter, &allow, &status) &&
890        unmarshallFilter(filter, &drop, &status)) {
891        Mutex::Autolock lock(mLock);
892
893        mMetadataAllow = allow;
894        mMetadataDrop = drop;
895    }
896    return status;
897}
898
899status_t MediaPlayerService::Client::getMetadata(
900        bool update_only, bool apply_filter, Parcel *reply)
901{
902    sp<MediaPlayerBase> player = getPlayer();
903    if (player == 0) return UNKNOWN_ERROR;
904
905    status_t status;
906    // Placeholder for the return code, updated by the caller.
907    reply->writeInt32(-1);
908
909    media::Metadata::Filter ids;
910
911    // We don't block notifications while we fetch the data. We clear
912    // mMetadataUpdated first so we don't lose notifications happening
913    // during the rest of this call.
914    {
915        Mutex::Autolock lock(mLock);
916        if (update_only) {
917            ids = mMetadataUpdated;
918        }
919        mMetadataUpdated.clear();
920    }
921
922    media::Metadata metadata(reply);
923
924    metadata.appendHeader();
925    status = player->getMetadata(ids, reply);
926
927    if (status != OK) {
928        metadata.resetParcel();
929        ALOGE("getMetadata failed %d", status);
930        return status;
931    }
932
933    // FIXME: Implement filtering on the result. Not critical since
934    // filtering takes place on the update notifications already. This
935    // would be when all the metadata are fetch and a filter is set.
936
937    // Everything is fine, update the metadata length.
938    metadata.updateLength();
939    return OK;
940}
941
942status_t MediaPlayerService::Client::prepareAsync()
943{
944    ALOGV("[%d] prepareAsync", mConnId);
945    sp<MediaPlayerBase> p = getPlayer();
946    if (p == 0) return UNKNOWN_ERROR;
947    status_t ret = p->prepareAsync();
948#if CALLBACK_ANTAGONIZER
949    ALOGD("start Antagonizer");
950    if (ret == NO_ERROR) mAntagonizer->start();
951#endif
952    return ret;
953}
954
955status_t MediaPlayerService::Client::start()
956{
957    ALOGV("[%d] start", mConnId);
958    sp<MediaPlayerBase> p = getPlayer();
959    if (p == 0) return UNKNOWN_ERROR;
960    p->setLooping(mLoop);
961    return p->start();
962}
963
964status_t MediaPlayerService::Client::stop()
965{
966    ALOGV("[%d] stop", mConnId);
967    sp<MediaPlayerBase> p = getPlayer();
968    if (p == 0) return UNKNOWN_ERROR;
969    return p->stop();
970}
971
972status_t MediaPlayerService::Client::pause()
973{
974    ALOGV("[%d] pause", mConnId);
975    sp<MediaPlayerBase> p = getPlayer();
976    if (p == 0) return UNKNOWN_ERROR;
977    return p->pause();
978}
979
980status_t MediaPlayerService::Client::isPlaying(bool* state)
981{
982    *state = false;
983    sp<MediaPlayerBase> p = getPlayer();
984    if (p == 0) return UNKNOWN_ERROR;
985    *state = p->isPlaying();
986    ALOGV("[%d] isPlaying: %d", mConnId, *state);
987    return NO_ERROR;
988}
989
990status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
991{
992    ALOGV("getCurrentPosition");
993    sp<MediaPlayerBase> p = getPlayer();
994    if (p == 0) return UNKNOWN_ERROR;
995    status_t ret = p->getCurrentPosition(msec);
996    if (ret == NO_ERROR) {
997        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
998    } else {
999        ALOGE("getCurrentPosition returned %d", ret);
1000    }
1001    return ret;
1002}
1003
1004status_t MediaPlayerService::Client::getDuration(int *msec)
1005{
1006    ALOGV("getDuration");
1007    sp<MediaPlayerBase> p = getPlayer();
1008    if (p == 0) return UNKNOWN_ERROR;
1009    status_t ret = p->getDuration(msec);
1010    if (ret == NO_ERROR) {
1011        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1012    } else {
1013        ALOGE("getDuration returned %d", ret);
1014    }
1015    return ret;
1016}
1017
1018status_t MediaPlayerService::Client::seekTo(int msec)
1019{
1020    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1021    sp<MediaPlayerBase> p = getPlayer();
1022    if (p == 0) return UNKNOWN_ERROR;
1023    return p->seekTo(msec);
1024}
1025
1026status_t MediaPlayerService::Client::reset()
1027{
1028    ALOGV("[%d] reset", mConnId);
1029    sp<MediaPlayerBase> p = getPlayer();
1030    if (p == 0) return UNKNOWN_ERROR;
1031    return p->reset();
1032}
1033
1034status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1035{
1036    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1037    // TODO: for hardware output, call player instead
1038    Mutex::Autolock l(mLock);
1039    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1040    return NO_ERROR;
1041}
1042
1043status_t MediaPlayerService::Client::setLooping(int loop)
1044{
1045    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1046    mLoop = loop;
1047    sp<MediaPlayerBase> p = getPlayer();
1048    if (p != 0) return p->setLooping(loop);
1049    return NO_ERROR;
1050}
1051
1052status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1053{
1054    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1055
1056    // for hardware output, call player instead
1057    sp<MediaPlayerBase> p = getPlayer();
1058    {
1059      Mutex::Autolock l(mLock);
1060      if (p != 0 && p->hardwareOutput()) {
1061          MediaPlayerHWInterface* hwp =
1062                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1063          return hwp->setVolume(leftVolume, rightVolume);
1064      } else {
1065          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1066          return NO_ERROR;
1067      }
1068    }
1069
1070    return NO_ERROR;
1071}
1072
1073status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1074{
1075    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1076    Mutex::Autolock l(mLock);
1077    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1078    return NO_ERROR;
1079}
1080
1081status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1082{
1083    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1084    Mutex::Autolock l(mLock);
1085    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1086    return NO_ERROR;
1087}
1088
1089status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1090    ALOGV("[%d] setParameter(%d)", mConnId, key);
1091    sp<MediaPlayerBase> p = getPlayer();
1092    if (p == 0) return UNKNOWN_ERROR;
1093    return p->setParameter(key, request);
1094}
1095
1096status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1097    ALOGV("[%d] getParameter(%d)", mConnId, key);
1098    sp<MediaPlayerBase> p = getPlayer();
1099    if (p == 0) return UNKNOWN_ERROR;
1100    return p->getParameter(key, reply);
1101}
1102
1103void MediaPlayerService::Client::notify(
1104        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1105{
1106    Client* client = static_cast<Client*>(cookie);
1107
1108    if (MEDIA_INFO == msg &&
1109        MEDIA_INFO_METADATA_UPDATE == ext1) {
1110        const media::Metadata::Type metadata_type = ext2;
1111
1112        if(client->shouldDropMetadata(metadata_type)) {
1113            return;
1114        }
1115
1116        // Update the list of metadata that have changed. getMetadata
1117        // also access mMetadataUpdated and clears it.
1118        client->addNewMetadataUpdate(metadata_type);
1119    }
1120    ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1121    client->mClient->notify(msg, ext1, ext2, obj);
1122}
1123
1124
1125bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1126{
1127    Mutex::Autolock lock(mLock);
1128
1129    if (findMetadata(mMetadataDrop, code)) {
1130        return true;
1131    }
1132
1133    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1134        return false;
1135    } else {
1136        return true;
1137    }
1138}
1139
1140
1141void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1142    Mutex::Autolock lock(mLock);
1143    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1144        mMetadataUpdated.add(metadata_type);
1145    }
1146}
1147
1148#if CALLBACK_ANTAGONIZER
1149const int Antagonizer::interval = 10000; // 10 msecs
1150
1151Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1152    mExit(false), mActive(false), mClient(client), mCb(cb)
1153{
1154    createThread(callbackThread, this);
1155}
1156
1157void Antagonizer::kill()
1158{
1159    Mutex::Autolock _l(mLock);
1160    mActive = false;
1161    mExit = true;
1162    mCondition.wait(mLock);
1163}
1164
1165int Antagonizer::callbackThread(void* user)
1166{
1167    ALOGD("Antagonizer started");
1168    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1169    while (!p->mExit) {
1170        if (p->mActive) {
1171            ALOGV("send event");
1172            p->mCb(p->mClient, 0, 0, 0);
1173        }
1174        usleep(interval);
1175    }
1176    Mutex::Autolock _l(p->mLock);
1177    p->mCondition.signal();
1178    ALOGD("Antagonizer stopped");
1179    return 0;
1180}
1181#endif
1182
1183static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1184
1185sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1186{
1187    ALOGV("decode(%s)", url);
1188    sp<MemoryBase> mem;
1189    sp<MediaPlayerBase> player;
1190
1191    // Protect our precious, precious DRMd ringtones by only allowing
1192    // decoding of http, but not filesystem paths or content Uris.
1193    // If the application wants to decode those, it should open a
1194    // filedescriptor for them and use that.
1195    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1196        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1197        return mem;
1198    }
1199
1200    player_type playerType = getPlayerType(url);
1201    ALOGV("player type = %d", playerType);
1202
1203    // create the right type of player
1204    sp<AudioCache> cache = new AudioCache(url);
1205    player = android::createPlayer(playerType, cache.get(), cache->notify);
1206    if (player == NULL) goto Exit;
1207    if (player->hardwareOutput()) goto Exit;
1208
1209    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1210
1211    // set data source
1212    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1213
1214    ALOGV("prepare");
1215    player->prepareAsync();
1216
1217    ALOGV("wait for prepare");
1218    if (cache->wait() != NO_ERROR) goto Exit;
1219
1220    ALOGV("start");
1221    player->start();
1222
1223    ALOGV("wait for playback complete");
1224    cache->wait();
1225    // in case of error, return what was successfully decoded.
1226    if (cache->size() == 0) {
1227        goto Exit;
1228    }
1229
1230    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1231    *pSampleRate = cache->sampleRate();
1232    *pNumChannels = cache->channelCount();
1233    *pFormat = cache->format();
1234    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1235
1236Exit:
1237    if (player != 0) player->reset();
1238    return mem;
1239}
1240
1241sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1242{
1243    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1244    sp<MemoryBase> mem;
1245    sp<MediaPlayerBase> player;
1246
1247    player_type playerType = getPlayerType(fd, offset, length);
1248    ALOGV("player type = %d", playerType);
1249
1250    // create the right type of player
1251    sp<AudioCache> cache = new AudioCache("decode_fd");
1252    player = android::createPlayer(playerType, cache.get(), cache->notify);
1253    if (player == NULL) goto Exit;
1254    if (player->hardwareOutput()) goto Exit;
1255
1256    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1257
1258    // set data source
1259    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1260
1261    ALOGV("prepare");
1262    player->prepareAsync();
1263
1264    ALOGV("wait for prepare");
1265    if (cache->wait() != NO_ERROR) goto Exit;
1266
1267    ALOGV("start");
1268    player->start();
1269
1270    ALOGV("wait for playback complete");
1271    cache->wait();
1272    // in case of error, return what was successfully decoded.
1273    if (cache->size() == 0) {
1274        goto Exit;
1275    }
1276
1277    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1278    *pSampleRate = cache->sampleRate();
1279    *pNumChannels = cache->channelCount();
1280    *pFormat = cache->format();
1281    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1282
1283Exit:
1284    if (player != 0) player->reset();
1285    ::close(fd);
1286    return mem;
1287}
1288
1289
1290#undef LOG_TAG
1291#define LOG_TAG "AudioSink"
1292MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1293    : mCallback(NULL),
1294      mCallbackCookie(NULL),
1295      mSessionId(sessionId) {
1296    ALOGV("AudioOutput(%d)", sessionId);
1297    mTrack = 0;
1298    mStreamType = AUDIO_STREAM_MUSIC;
1299    mLeftVolume = 1.0;
1300    mRightVolume = 1.0;
1301    mPlaybackRatePermille = 1000;
1302    mSampleRateHz = 0;
1303    mLatency = 0;
1304    mMsecsPerFrame = 0;
1305    mAuxEffectId = 0;
1306    mSendLevel = 0.0;
1307    setMinBufferCount();
1308}
1309
1310MediaPlayerService::AudioOutput::~AudioOutput()
1311{
1312    close();
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    return mLatency;
1363}
1364
1365float MediaPlayerService::AudioOutput::msecsPerFrame() const
1366{
1367    return mMsecsPerFrame;
1368}
1369
1370status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1371{
1372    if (mTrack == 0) return NO_INIT;
1373    return mTrack->getPosition(position);
1374}
1375
1376status_t MediaPlayerService::AudioOutput::open(
1377        uint32_t sampleRate, int channelCount, audio_format_t format, int bufferCount,
1378        AudioCallback cb, void *cookie)
1379{
1380    mCallback = cb;
1381    mCallbackCookie = cookie;
1382
1383    // Check argument "bufferCount" against the mininum buffer count
1384    if (bufferCount < mMinBufferCount) {
1385        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1386        bufferCount = mMinBufferCount;
1387
1388    }
1389    ALOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1390    if (mTrack) close();
1391    int afSampleRate;
1392    int afFrameCount;
1393    int frameCount;
1394
1395    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1396        return NO_INIT;
1397    }
1398    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1399        return NO_INIT;
1400    }
1401
1402    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1403
1404    AudioTrack *t;
1405    if (mCallback != NULL) {
1406        t = new AudioTrack(
1407                mStreamType,
1408                sampleRate,
1409                format,
1410                (channelCount == 2) ? AUDIO_CHANNEL_OUT_STEREO : AUDIO_CHANNEL_OUT_MONO,
1411                frameCount,
1412                0 /* flags */,
1413                CallbackWrapper,
1414                this,
1415                0,
1416                mSessionId);
1417    } else {
1418        t = new AudioTrack(
1419                mStreamType,
1420                sampleRate,
1421                format,
1422                (channelCount == 2) ? AUDIO_CHANNEL_OUT_STEREO : AUDIO_CHANNEL_OUT_MONO,
1423                frameCount,
1424                0,
1425                NULL,
1426                NULL,
1427                0,
1428                mSessionId);
1429    }
1430
1431    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1432        ALOGE("Unable to create audio track");
1433        delete t;
1434        return NO_INIT;
1435    }
1436
1437    ALOGV("setVolume");
1438    t->setVolume(mLeftVolume, mRightVolume);
1439
1440    mSampleRateHz = sampleRate;
1441    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1442    mLatency = t->latency();
1443    mTrack = t;
1444
1445    status_t res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1446    if (res != NO_ERROR) {
1447        return res;
1448    }
1449    t->setAuxEffectSendLevel(mSendLevel);
1450    return t->attachAuxEffect(mAuxEffectId);;
1451}
1452
1453void MediaPlayerService::AudioOutput::start()
1454{
1455    ALOGV("start");
1456    if (mTrack) {
1457        mTrack->setVolume(mLeftVolume, mRightVolume);
1458        mTrack->setAuxEffectSendLevel(mSendLevel);
1459        mTrack->start();
1460    }
1461}
1462
1463
1464
1465ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1466{
1467    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1468
1469    //ALOGV("write(%p, %u)", buffer, size);
1470    if (mTrack) {
1471        ssize_t ret = mTrack->write(buffer, size);
1472        return ret;
1473    }
1474    return NO_INIT;
1475}
1476
1477void MediaPlayerService::AudioOutput::stop()
1478{
1479    ALOGV("stop");
1480    if (mTrack) mTrack->stop();
1481}
1482
1483void MediaPlayerService::AudioOutput::flush()
1484{
1485    ALOGV("flush");
1486    if (mTrack) mTrack->flush();
1487}
1488
1489void MediaPlayerService::AudioOutput::pause()
1490{
1491    ALOGV("pause");
1492    if (mTrack) mTrack->pause();
1493}
1494
1495void MediaPlayerService::AudioOutput::close()
1496{
1497    ALOGV("close");
1498    delete mTrack;
1499    mTrack = 0;
1500}
1501
1502void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1503{
1504    ALOGV("setVolume(%f, %f)", left, right);
1505    mLeftVolume = left;
1506    mRightVolume = right;
1507    if (mTrack) {
1508        mTrack->setVolume(left, right);
1509    }
1510}
1511
1512status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1513{
1514    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1515    status_t res = NO_ERROR;
1516    if (mTrack) {
1517        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1518    } else {
1519        res = NO_INIT;
1520    }
1521    mPlaybackRatePermille = ratePermille;
1522    if (mSampleRateHz != 0) {
1523        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1524    }
1525    return res;
1526}
1527
1528status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1529{
1530    ALOGV("setAuxEffectSendLevel(%f)", level);
1531    mSendLevel = level;
1532    if (mTrack) {
1533        return mTrack->setAuxEffectSendLevel(level);
1534    }
1535    return NO_ERROR;
1536}
1537
1538status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1539{
1540    ALOGV("attachAuxEffect(%d)", effectId);
1541    mAuxEffectId = effectId;
1542    if (mTrack) {
1543        return mTrack->attachAuxEffect(effectId);
1544    }
1545    return NO_ERROR;
1546}
1547
1548// static
1549void MediaPlayerService::AudioOutput::CallbackWrapper(
1550        int event, void *cookie, void *info) {
1551    //ALOGV("callbackwrapper");
1552    if (event != AudioTrack::EVENT_MORE_DATA) {
1553        return;
1554    }
1555
1556    AudioOutput *me = (AudioOutput *)cookie;
1557    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1558
1559    size_t actualSize = (*me->mCallback)(
1560            me, buffer->raw, buffer->size, me->mCallbackCookie);
1561
1562    if (actualSize == 0 && buffer->size > 0) {
1563        // We've reached EOS but the audio track is not stopped yet,
1564        // keep playing silence.
1565
1566        memset(buffer->raw, 0, buffer->size);
1567        actualSize = buffer->size;
1568    }
1569
1570    buffer->size = actualSize;
1571}
1572
1573int MediaPlayerService::AudioOutput::getSessionId()
1574{
1575    return mSessionId;
1576}
1577
1578#undef LOG_TAG
1579#define LOG_TAG "AudioCache"
1580MediaPlayerService::AudioCache::AudioCache(const char* name) :
1581    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1582    mError(NO_ERROR), mCommandComplete(false)
1583{
1584    // create ashmem heap
1585    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1586}
1587
1588uint32_t MediaPlayerService::AudioCache::latency () const
1589{
1590    return 0;
1591}
1592
1593float MediaPlayerService::AudioCache::msecsPerFrame() const
1594{
1595    return mMsecsPerFrame;
1596}
1597
1598status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1599{
1600    if (position == 0) return BAD_VALUE;
1601    *position = mSize;
1602    return NO_ERROR;
1603}
1604
1605////////////////////////////////////////////////////////////////////////////////
1606
1607struct CallbackThread : public Thread {
1608    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1609                   MediaPlayerBase::AudioSink::AudioCallback cb,
1610                   void *cookie);
1611
1612protected:
1613    virtual ~CallbackThread();
1614
1615    virtual bool threadLoop();
1616
1617private:
1618    wp<MediaPlayerBase::AudioSink> mSink;
1619    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1620    void *mCookie;
1621    void *mBuffer;
1622    size_t mBufferSize;
1623
1624    CallbackThread(const CallbackThread &);
1625    CallbackThread &operator=(const CallbackThread &);
1626};
1627
1628CallbackThread::CallbackThread(
1629        const wp<MediaPlayerBase::AudioSink> &sink,
1630        MediaPlayerBase::AudioSink::AudioCallback cb,
1631        void *cookie)
1632    : mSink(sink),
1633      mCallback(cb),
1634      mCookie(cookie),
1635      mBuffer(NULL),
1636      mBufferSize(0) {
1637}
1638
1639CallbackThread::~CallbackThread() {
1640    if (mBuffer) {
1641        free(mBuffer);
1642        mBuffer = NULL;
1643    }
1644}
1645
1646bool CallbackThread::threadLoop() {
1647    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1648    if (sink == NULL) {
1649        return false;
1650    }
1651
1652    if (mBuffer == NULL) {
1653        mBufferSize = sink->bufferSize();
1654        mBuffer = malloc(mBufferSize);
1655    }
1656
1657    size_t actualSize =
1658        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1659
1660    if (actualSize > 0) {
1661        sink->write(mBuffer, actualSize);
1662    }
1663
1664    return true;
1665}
1666
1667////////////////////////////////////////////////////////////////////////////////
1668
1669status_t MediaPlayerService::AudioCache::open(
1670        uint32_t sampleRate, int channelCount, audio_format_t format, int bufferCount,
1671        AudioCallback cb, void *cookie)
1672{
1673    ALOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1674    if (mHeap->getHeapID() < 0) {
1675        return NO_INIT;
1676    }
1677
1678    mSampleRate = sampleRate;
1679    mChannelCount = (uint16_t)channelCount;
1680    mFormat = format;
1681    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1682
1683    if (cb != NULL) {
1684        mCallbackThread = new CallbackThread(this, cb, cookie);
1685    }
1686    return NO_ERROR;
1687}
1688
1689void MediaPlayerService::AudioCache::start() {
1690    if (mCallbackThread != NULL) {
1691        mCallbackThread->run("AudioCache callback");
1692    }
1693}
1694
1695void MediaPlayerService::AudioCache::stop() {
1696    if (mCallbackThread != NULL) {
1697        mCallbackThread->requestExitAndWait();
1698    }
1699}
1700
1701ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1702{
1703    ALOGV("write(%p, %u)", buffer, size);
1704    if ((buffer == 0) || (size == 0)) return size;
1705
1706    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1707    if (p == NULL) return NO_INIT;
1708    p += mSize;
1709    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1710    if (mSize + size > mHeap->getSize()) {
1711        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1712        size = mHeap->getSize() - mSize;
1713    }
1714    memcpy(p, buffer, size);
1715    mSize += size;
1716    return size;
1717}
1718
1719// call with lock held
1720status_t MediaPlayerService::AudioCache::wait()
1721{
1722    Mutex::Autolock lock(mLock);
1723    while (!mCommandComplete) {
1724        mSignal.wait(mLock);
1725    }
1726    mCommandComplete = false;
1727
1728    if (mError == NO_ERROR) {
1729        ALOGV("wait - success");
1730    } else {
1731        ALOGV("wait - error");
1732    }
1733    return mError;
1734}
1735
1736void MediaPlayerService::AudioCache::notify(
1737        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1738{
1739    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1740    AudioCache* p = static_cast<AudioCache*>(cookie);
1741
1742    // ignore buffering messages
1743    switch (msg)
1744    {
1745    case MEDIA_ERROR:
1746        ALOGE("Error %d, %d occurred", ext1, ext2);
1747        p->mError = ext1;
1748        break;
1749    case MEDIA_PREPARED:
1750        ALOGV("prepared");
1751        break;
1752    case MEDIA_PLAYBACK_COMPLETE:
1753        ALOGV("playback complete");
1754        break;
1755    default:
1756        ALOGV("ignored");
1757        return;
1758    }
1759
1760    // wake up thread
1761    Mutex::Autolock lock(p->mLock);
1762    p->mCommandComplete = true;
1763    p->mSignal.signal();
1764}
1765
1766int MediaPlayerService::AudioCache::getSessionId()
1767{
1768    return 0;
1769}
1770
1771void MediaPlayerService::addBatteryData(uint32_t params)
1772{
1773    Mutex::Autolock lock(mLock);
1774
1775    int32_t time = systemTime() / 1000000L;
1776
1777    // change audio output devices. This notification comes from AudioFlinger
1778    if ((params & kBatteryDataSpeakerOn)
1779            || (params & kBatteryDataOtherAudioDeviceOn)) {
1780
1781        int deviceOn[NUM_AUDIO_DEVICES];
1782        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1783            deviceOn[i] = 0;
1784        }
1785
1786        if ((params & kBatteryDataSpeakerOn)
1787                && (params & kBatteryDataOtherAudioDeviceOn)) {
1788            deviceOn[SPEAKER_AND_OTHER] = 1;
1789        } else if (params & kBatteryDataSpeakerOn) {
1790            deviceOn[SPEAKER] = 1;
1791        } else {
1792            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1793        }
1794
1795        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1796            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1797
1798                if (mBatteryAudio.refCount > 0) { // if playing audio
1799                    if (!deviceOn[i]) {
1800                        mBatteryAudio.lastTime[i] += time;
1801                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1802                        mBatteryAudio.lastTime[i] = 0;
1803                    } else {
1804                        mBatteryAudio.lastTime[i] = 0 - time;
1805                    }
1806                }
1807
1808                mBatteryAudio.deviceOn[i] = deviceOn[i];
1809            }
1810        }
1811        return;
1812    }
1813
1814    // an sudio stream is started
1815    if (params & kBatteryDataAudioFlingerStart) {
1816        // record the start time only if currently no other audio
1817        // is being played
1818        if (mBatteryAudio.refCount == 0) {
1819            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1820                if (mBatteryAudio.deviceOn[i]) {
1821                    mBatteryAudio.lastTime[i] -= time;
1822                }
1823            }
1824        }
1825
1826        mBatteryAudio.refCount ++;
1827        return;
1828
1829    } else if (params & kBatteryDataAudioFlingerStop) {
1830        if (mBatteryAudio.refCount <= 0) {
1831            ALOGW("Battery track warning: refCount is <= 0");
1832            return;
1833        }
1834
1835        // record the stop time only if currently this is the only
1836        // audio being played
1837        if (mBatteryAudio.refCount == 1) {
1838            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1839                if (mBatteryAudio.deviceOn[i]) {
1840                    mBatteryAudio.lastTime[i] += time;
1841                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1842                    mBatteryAudio.lastTime[i] = 0;
1843                }
1844            }
1845        }
1846
1847        mBatteryAudio.refCount --;
1848        return;
1849    }
1850
1851    int uid = IPCThreadState::self()->getCallingUid();
1852    if (uid == AID_MEDIA) {
1853        return;
1854    }
1855    int index = mBatteryData.indexOfKey(uid);
1856
1857    if (index < 0) { // create a new entry for this UID
1858        BatteryUsageInfo info;
1859        info.audioTotalTime = 0;
1860        info.videoTotalTime = 0;
1861        info.audioLastTime = 0;
1862        info.videoLastTime = 0;
1863        info.refCount = 0;
1864
1865        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1866            ALOGE("Battery track error: no memory for new app");
1867            return;
1868        }
1869    }
1870
1871    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1872
1873    if (params & kBatteryDataCodecStarted) {
1874        if (params & kBatteryDataTrackAudio) {
1875            info.audioLastTime -= time;
1876            info.refCount ++;
1877        }
1878        if (params & kBatteryDataTrackVideo) {
1879            info.videoLastTime -= time;
1880            info.refCount ++;
1881        }
1882    } else {
1883        if (info.refCount == 0) {
1884            ALOGW("Battery track warning: refCount is already 0");
1885            return;
1886        } else if (info.refCount < 0) {
1887            ALOGE("Battery track error: refCount < 0");
1888            mBatteryData.removeItem(uid);
1889            return;
1890        }
1891
1892        if (params & kBatteryDataTrackAudio) {
1893            info.audioLastTime += time;
1894            info.refCount --;
1895        }
1896        if (params & kBatteryDataTrackVideo) {
1897            info.videoLastTime += time;
1898            info.refCount --;
1899        }
1900
1901        // no stream is being played by this UID
1902        if (info.refCount == 0) {
1903            info.audioTotalTime += info.audioLastTime;
1904            info.audioLastTime = 0;
1905            info.videoTotalTime += info.videoLastTime;
1906            info.videoLastTime = 0;
1907        }
1908    }
1909}
1910
1911status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
1912    Mutex::Autolock lock(mLock);
1913
1914    // audio output devices usage
1915    int32_t time = systemTime() / 1000000L; //in ms
1916    int32_t totalTime;
1917
1918    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1919        totalTime = mBatteryAudio.totalTime[i];
1920
1921        if (mBatteryAudio.deviceOn[i]
1922            && (mBatteryAudio.lastTime[i] != 0)) {
1923                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
1924                totalTime += tmpTime;
1925        }
1926
1927        reply->writeInt32(totalTime);
1928        // reset the total time
1929        mBatteryAudio.totalTime[i] = 0;
1930   }
1931
1932    // codec usage
1933    BatteryUsageInfo info;
1934    int size = mBatteryData.size();
1935
1936    reply->writeInt32(size);
1937    int i = 0;
1938
1939    while (i < size) {
1940        info = mBatteryData.valueAt(i);
1941
1942        reply->writeInt32(mBatteryData.keyAt(i)); //UID
1943        reply->writeInt32(info.audioTotalTime);
1944        reply->writeInt32(info.videoTotalTime);
1945
1946        info.audioTotalTime = 0;
1947        info.videoTotalTime = 0;
1948
1949        // remove the UID entry where no stream is being played
1950        if (info.refCount <= 0) {
1951            mBatteryData.removeItemsAt(i);
1952            size --;
1953            i --;
1954        }
1955        i++;
1956    }
1957    return NO_ERROR;
1958}
1959} // namespace android
1960