MediaPlayerService.cpp revision f2575571d88cd42508407e98957a19a875dcf926 
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/IBatteryStats.h>
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <gui/Surface.h>
43#include <utils/Errors.h>  // for status_t
44#include <utils/String8.h>
45#include <utils/SystemClock.h>
46#include <utils/Vector.h>
47
48#include <media/IMediaHTTPService.h>
49#include <media/IRemoteDisplay.h>
50#include <media/IRemoteDisplayClient.h>
51#include <media/MediaPlayerInterface.h>
52#include <media/mediarecorder.h>
53#include <media/MediaMetadataRetrieverInterface.h>
54#include <media/Metadata.h>
55#include <media/AudioTrack.h>
56#include <media/MemoryLeakTrackUtil.h>
57#include <media/stagefright/MediaCodecList.h>
58#include <media/stagefright/MediaErrors.h>
59#include <media/stagefright/AudioPlayer.h>
60#include <media/stagefright/foundation/ADebug.h>
61
62#include <system/audio.h>
63
64#include <private/android_filesystem_config.h>
65
66#include "ActivityManager.h"
67#include "MediaRecorderClient.h"
68#include "MediaPlayerService.h"
69#include "MetadataRetrieverClient.h"
70#include "MediaPlayerFactory.h"
71
72#include "MidiFile.h"
73#include "TestPlayerStub.h"
74#include "StagefrightPlayer.h"
75#include "nuplayer/NuPlayerDriver.h"
76
77#include <OMX.h>
78
79#include "Crypto.h"
80#include "Drm.h"
81#include "HDCP.h"
82#include "HTTPBase.h"
83#include "RemoteDisplay.h"
84
85namespace {
86using android::media::Metadata;
87using android::status_t;
88using android::OK;
89using android::BAD_VALUE;
90using android::NOT_ENOUGH_DATA;
91using android::Parcel;
92
93// Max number of entries in the filter.
94const int kMaxFilterSize = 64;  // I pulled that out of thin air.
95
96// FIXME: Move all the metadata related function in the Metadata.cpp
97
98
99// Unmarshall a filter from a Parcel.
100// Filter format in a parcel:
101//
102//  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
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       number of entries (n)                   |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       metadata type 1                         |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108// |                       metadata type 2                         |
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110//  ....
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112// |                       metadata type n                         |
113// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
114//
115// @param p Parcel that should start with a filter.
116// @param[out] filter On exit contains the list of metadata type to be
117//                    filtered.
118// @param[out] status On exit contains the status code to be returned.
119// @return true if the parcel starts with a valid filter.
120bool unmarshallFilter(const Parcel& p,
121                      Metadata::Filter *filter,
122                      status_t *status)
123{
124    int32_t val;
125    if (p.readInt32(&val) != OK)
126    {
127        ALOGE("Failed to read filter's length");
128        *status = NOT_ENOUGH_DATA;
129        return false;
130    }
131
132    if( val > kMaxFilterSize || val < 0)
133    {
134        ALOGE("Invalid filter len %d", val);
135        *status = BAD_VALUE;
136        return false;
137    }
138
139    const size_t num = val;
140
141    filter->clear();
142    filter->setCapacity(num);
143
144    size_t size = num * sizeof(Metadata::Type);
145
146
147    if (p.dataAvail() < size)
148    {
149        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
150        *status = NOT_ENOUGH_DATA;
151        return false;
152    }
153
154    const Metadata::Type *data =
155            static_cast<const Metadata::Type*>(p.readInplace(size));
156
157    if (NULL == data)
158    {
159        ALOGE("Filter had no data");
160        *status = BAD_VALUE;
161        return false;
162    }
163
164    // TODO: The stl impl of vector would be more efficient here
165    // because it degenerates into a memcpy on pod types. Try to
166    // replace later or use stl::set.
167    for (size_t i = 0; i < num; ++i)
168    {
169        filter->add(*data);
170        ++data;
171    }
172    *status = OK;
173    return true;
174}
175
176// @param filter Of metadata type.
177// @param val To be searched.
178// @return true if a match was found.
179bool findMetadata(const Metadata::Filter& filter, const int32_t val)
180{
181    // Deal with empty and ANY right away
182    if (filter.isEmpty()) return false;
183    if (filter[0] == Metadata::kAny) return true;
184
185    return filter.indexOf(val) >= 0;
186}
187
188}  // anonymous namespace
189
190
191namespace {
192using android::Parcel;
193using android::String16;
194
195// marshalling tag indicating flattened utf16 tags
196// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
197const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
198
199// Audio attributes format in a parcel:
200//
201//  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
202// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
203// |                       usage                                   |
204// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
205// |                       content_type                            |
206// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207// |                       flags                                   |
208// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
210// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
211// |                       flattened tags in UTF16                 |
212// |                         ...                                   |
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214//
215// @param p Parcel that contains audio attributes.
216// @param[out] attributes On exit points to an initialized audio_attributes_t structure
217// @param[out] status On exit contains the status code to be returned.
218void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
219{
220    attributes->usage = (audio_usage_t) parcel.readInt32();
221    attributes->content_type = (audio_content_type_t) parcel.readInt32();
222    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
223    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
224    if (hasFlattenedTag) {
225        // the tags are UTF16, convert to UTF8
226        String16 tags = parcel.readString16();
227        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
228        if (realTagSize <= 0) {
229            strcpy(attributes->tags, "");
230        } else {
231            // copy the flattened string into the attributes as the destination for the conversion:
232            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
233            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
234                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
235            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
236        }
237    } else {
238        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
239        strcpy(attributes->tags, "");
240    }
241}
242} // anonymous namespace
243
244
245namespace android {
246
247static bool checkPermission(const char* permissionString) {
248#ifndef HAVE_ANDROID_OS
249    return true;
250#endif
251    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
252    bool ok = checkCallingPermission(String16(permissionString));
253    if (!ok) ALOGE("Request requires %s", permissionString);
254    return ok;
255}
256
257// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
258/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
259/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
260
261void MediaPlayerService::instantiate() {
262    defaultServiceManager()->addService(
263            String16("media.player"), new MediaPlayerService());
264}
265
266MediaPlayerService::MediaPlayerService()
267{
268    ALOGV("MediaPlayerService created");
269    mNextConnId = 1;
270
271    mBatteryAudio.refCount = 0;
272    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
273        mBatteryAudio.deviceOn[i] = 0;
274        mBatteryAudio.lastTime[i] = 0;
275        mBatteryAudio.totalTime[i] = 0;
276    }
277    // speaker is on by default
278    mBatteryAudio.deviceOn[SPEAKER] = 1;
279
280    // reset battery stats
281    // if the mediaserver has crashed, battery stats could be left
282    // in bad state, reset the state upon service start.
283    const sp<IServiceManager> sm(defaultServiceManager());
284    if (sm != NULL) {
285        const String16 name("batterystats");
286        sp<IBatteryStats> batteryStats =
287                interface_cast<IBatteryStats>(sm->getService(name));
288        if (batteryStats != NULL) {
289            batteryStats->noteResetVideo();
290            batteryStats->noteResetAudio();
291        }
292    }
293
294    MediaPlayerFactory::registerBuiltinFactories();
295}
296
297MediaPlayerService::~MediaPlayerService()
298{
299    ALOGV("MediaPlayerService destroyed");
300}
301
302sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
303{
304    pid_t pid = IPCThreadState::self()->getCallingPid();
305    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
306    wp<MediaRecorderClient> w = recorder;
307    Mutex::Autolock lock(mLock);
308    mMediaRecorderClients.add(w);
309    ALOGV("Create new media recorder client from pid %d", pid);
310    return recorder;
311}
312
313void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
314{
315    Mutex::Autolock lock(mLock);
316    mMediaRecorderClients.remove(client);
317    ALOGV("Delete media recorder client");
318}
319
320sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
321{
322    pid_t pid = IPCThreadState::self()->getCallingPid();
323    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
324    ALOGV("Create new media retriever from pid %d", pid);
325    return retriever;
326}
327
328sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
329        int audioSessionId)
330{
331    pid_t pid = IPCThreadState::self()->getCallingPid();
332    int32_t connId = android_atomic_inc(&mNextConnId);
333
334    sp<Client> c = new Client(
335            this, pid, connId, client, audioSessionId,
336            IPCThreadState::self()->getCallingUid());
337
338    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
339         IPCThreadState::self()->getCallingUid());
340
341    wp<Client> w = c;
342    {
343        Mutex::Autolock lock(mLock);
344        mClients.add(w);
345    }
346    return c;
347}
348
349sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
350    return MediaCodecList::getLocalInstance();
351}
352
353sp<IOMX> MediaPlayerService::getOMX() {
354    Mutex::Autolock autoLock(mLock);
355
356    if (mOMX.get() == NULL) {
357        mOMX = new OMX;
358    }
359
360    return mOMX;
361}
362
363sp<ICrypto> MediaPlayerService::makeCrypto() {
364    return new Crypto;
365}
366
367sp<IDrm> MediaPlayerService::makeDrm() {
368    return new Drm;
369}
370
371sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
372    return new HDCP(createEncryptionModule);
373}
374
375sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
376        const sp<IRemoteDisplayClient>& client, const String8& iface) {
377    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
378        return NULL;
379    }
380
381    return new RemoteDisplay(client, iface.string());
382}
383
384status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& /*args*/) const
385{
386    const size_t SIZE = 256;
387    char buffer[SIZE];
388    String8 result;
389
390    result.append(" AudioCache\n");
391    if (mHeap != 0) {
392        snprintf(buffer, 255, "  heap base(%p), size(%zu), flags(%d)\n",
393                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags());
394        result.append(buffer);
395    }
396    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%zd)\n",
397            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
398    result.append(buffer);
399    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
400            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
401    result.append(buffer);
402    ::write(fd, result.string(), result.size());
403    return NO_ERROR;
404}
405
406status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
407{
408    const size_t SIZE = 256;
409    char buffer[SIZE];
410    String8 result;
411
412    result.append(" AudioOutput\n");
413    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
414            mStreamType, mLeftVolume, mRightVolume);
415    result.append(buffer);
416    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
417            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
418    result.append(buffer);
419    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
420            mAuxEffectId, mSendLevel);
421    result.append(buffer);
422
423    ::write(fd, result.string(), result.size());
424    if (mTrack != 0) {
425        mTrack->dump(fd, args);
426    }
427    return NO_ERROR;
428}
429
430status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
431{
432    const size_t SIZE = 256;
433    char buffer[SIZE];
434    String8 result;
435    result.append(" Client\n");
436    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
437            mPid, mConnId, mStatus, mLoop?"true": "false");
438    result.append(buffer);
439    write(fd, result.string(), result.size());
440    if (mPlayer != NULL) {
441        mPlayer->dump(fd, args);
442    }
443    if (mAudioOutput != 0) {
444        mAudioOutput->dump(fd, args);
445    }
446    write(fd, "\n", 1);
447    return NO_ERROR;
448}
449
450status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
451{
452    const size_t SIZE = 256;
453    char buffer[SIZE];
454    String8 result;
455    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
456        snprintf(buffer, SIZE, "Permission Denial: "
457                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
458                IPCThreadState::self()->getCallingPid(),
459                IPCThreadState::self()->getCallingUid());
460        result.append(buffer);
461    } else {
462        Mutex::Autolock lock(mLock);
463        for (int i = 0, n = mClients.size(); i < n; ++i) {
464            sp<Client> c = mClients[i].promote();
465            if (c != 0) c->dump(fd, args);
466        }
467        if (mMediaRecorderClients.size() == 0) {
468                result.append(" No media recorder client\n\n");
469        } else {
470            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
471                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
472                if (c != 0) {
473                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
474                    result.append(buffer);
475                    write(fd, result.string(), result.size());
476                    result = "\n";
477                    c->dump(fd, args);
478                }
479            }
480        }
481
482        result.append(" Files opened and/or mapped:\n");
483        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
484        FILE *f = fopen(buffer, "r");
485        if (f) {
486            while (!feof(f)) {
487                fgets(buffer, SIZE, f);
488                if (strstr(buffer, " /storage/") ||
489                    strstr(buffer, " /system/sounds/") ||
490                    strstr(buffer, " /data/") ||
491                    strstr(buffer, " /system/media/")) {
492                    result.append("  ");
493                    result.append(buffer);
494                }
495            }
496            fclose(f);
497        } else {
498            result.append("couldn't open ");
499            result.append(buffer);
500            result.append("\n");
501        }
502
503        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
504        DIR *d = opendir(buffer);
505        if (d) {
506            struct dirent *ent;
507            while((ent = readdir(d)) != NULL) {
508                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
509                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
510                    struct stat s;
511                    if (lstat(buffer, &s) == 0) {
512                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
513                            char linkto[256];
514                            int len = readlink(buffer, linkto, sizeof(linkto));
515                            if(len > 0) {
516                                if(len > 255) {
517                                    linkto[252] = '.';
518                                    linkto[253] = '.';
519                                    linkto[254] = '.';
520                                    linkto[255] = 0;
521                                } else {
522                                    linkto[len] = 0;
523                                }
524                                if (strstr(linkto, "/storage/") == linkto ||
525                                    strstr(linkto, "/system/sounds/") == linkto ||
526                                    strstr(linkto, "/data/") == linkto ||
527                                    strstr(linkto, "/system/media/") == linkto) {
528                                    result.append("  ");
529                                    result.append(buffer);
530                                    result.append(" -> ");
531                                    result.append(linkto);
532                                    result.append("\n");
533                                }
534                            }
535                        } else {
536                            result.append("  unexpected type for ");
537                            result.append(buffer);
538                            result.append("\n");
539                        }
540                    }
541                }
542            }
543            closedir(d);
544        } else {
545            result.append("couldn't open ");
546            result.append(buffer);
547            result.append("\n");
548        }
549
550        bool dumpMem = false;
551        for (size_t i = 0; i < args.size(); i++) {
552            if (args[i] == String16("-m")) {
553                dumpMem = true;
554            }
555        }
556        if (dumpMem) {
557            dumpMemoryAddresses(fd);
558        }
559    }
560    write(fd, result.string(), result.size());
561    return NO_ERROR;
562}
563
564void MediaPlayerService::removeClient(wp<Client> client)
565{
566    Mutex::Autolock lock(mLock);
567    mClients.remove(client);
568}
569
570MediaPlayerService::Client::Client(
571        const sp<MediaPlayerService>& service, pid_t pid,
572        int32_t connId, const sp<IMediaPlayerClient>& client,
573        int audioSessionId, uid_t uid)
574{
575    ALOGV("Client(%d) constructor", connId);
576    mPid = pid;
577    mConnId = connId;
578    mService = service;
579    mClient = client;
580    mLoop = false;
581    mStatus = NO_INIT;
582    mAudioSessionId = audioSessionId;
583    mUID = uid;
584    mRetransmitEndpointValid = false;
585    mAudioAttributes = NULL;
586
587#if CALLBACK_ANTAGONIZER
588    ALOGD("create Antagonizer");
589    mAntagonizer = new Antagonizer(notify, this);
590#endif
591}
592
593MediaPlayerService::Client::~Client()
594{
595    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
596    mAudioOutput.clear();
597    wp<Client> client(this);
598    disconnect();
599    mService->removeClient(client);
600    if (mAudioAttributes != NULL) {
601        free(mAudioAttributes);
602    }
603}
604
605void MediaPlayerService::Client::disconnect()
606{
607    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
608    // grab local reference and clear main reference to prevent future
609    // access to object
610    sp<MediaPlayerBase> p;
611    {
612        Mutex::Autolock l(mLock);
613        p = mPlayer;
614        mClient.clear();
615    }
616
617    mPlayer.clear();
618
619    // clear the notification to prevent callbacks to dead client
620    // and reset the player. We assume the player will serialize
621    // access to itself if necessary.
622    if (p != 0) {
623        p->setNotifyCallback(0, 0);
624#if CALLBACK_ANTAGONIZER
625        ALOGD("kill Antagonizer");
626        mAntagonizer->kill();
627#endif
628        p->reset();
629    }
630
631    disconnectNativeWindow();
632
633    IPCThreadState::self()->flushCommands();
634}
635
636sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
637{
638    // determine if we have the right player type
639    sp<MediaPlayerBase> p = mPlayer;
640    if ((p != NULL) && (p->playerType() != playerType)) {
641        ALOGV("delete player");
642        p.clear();
643    }
644    if (p == NULL) {
645        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
646    }
647
648    if (p != NULL) {
649        p->setUID(mUID);
650    }
651
652    return p;
653}
654
655sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
656        player_type playerType)
657{
658    ALOGV("player type = %d", playerType);
659
660    // create the right type of player
661    sp<MediaPlayerBase> p = createPlayer(playerType);
662    if (p == NULL) {
663        return p;
664    }
665
666    if (!p->hardwareOutput()) {
667        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
668                mPid, mAudioAttributes);
669        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
670    }
671
672    return p;
673}
674
675void MediaPlayerService::Client::setDataSource_post(
676        const sp<MediaPlayerBase>& p,
677        status_t status)
678{
679    ALOGV(" setDataSource");
680    mStatus = status;
681    if (mStatus != OK) {
682        ALOGE("  error: %d", mStatus);
683        return;
684    }
685
686    // Set the re-transmission endpoint if one was chosen.
687    if (mRetransmitEndpointValid) {
688        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
689        if (mStatus != NO_ERROR) {
690            ALOGE("setRetransmitEndpoint error: %d", mStatus);
691        }
692    }
693
694    if (mStatus == OK) {
695        mPlayer = p;
696    }
697}
698
699status_t MediaPlayerService::Client::setDataSource(
700        const sp<IMediaHTTPService> &httpService,
701        const char *url,
702        const KeyedVector<String8, String8> *headers)
703{
704    ALOGV("setDataSource(%s)", url);
705    if (url == NULL)
706        return UNKNOWN_ERROR;
707
708    if ((strncmp(url, "http://", 7) == 0) ||
709        (strncmp(url, "https://", 8) == 0) ||
710        (strncmp(url, "rtsp://", 7) == 0)) {
711        if (!checkPermission("android.permission.INTERNET")) {
712            return PERMISSION_DENIED;
713        }
714    }
715
716    if (strncmp(url, "content://", 10) == 0) {
717        // get a filedescriptor for the content Uri and
718        // pass it to the setDataSource(fd) method
719
720        String16 url16(url);
721        int fd = android::openContentProviderFile(url16);
722        if (fd < 0)
723        {
724            ALOGE("Couldn't open fd for %s", url);
725            return UNKNOWN_ERROR;
726        }
727        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
728        close(fd);
729        return mStatus;
730    } else {
731        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
732        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
733        if (p == NULL) {
734            return NO_INIT;
735        }
736
737        setDataSource_post(p, p->setDataSource(httpService, url, headers));
738        return mStatus;
739    }
740}
741
742status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
743{
744    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
745    struct stat sb;
746    int ret = fstat(fd, &sb);
747    if (ret != 0) {
748        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
749        return UNKNOWN_ERROR;
750    }
751
752    ALOGV("st_dev  = %llu", sb.st_dev);
753    ALOGV("st_mode = %u", sb.st_mode);
754    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
755    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
756    ALOGV("st_size = %llu", sb.st_size);
757
758    if (offset >= sb.st_size) {
759        ALOGE("offset error");
760        ::close(fd);
761        return UNKNOWN_ERROR;
762    }
763    if (offset + length > sb.st_size) {
764        length = sb.st_size - offset;
765        ALOGV("calculated length = %lld", length);
766    }
767
768    player_type playerType = MediaPlayerFactory::getPlayerType(this,
769                                                               fd,
770                                                               offset,
771                                                               length);
772    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
773    if (p == NULL) {
774        return NO_INIT;
775    }
776
777    // now set data source
778    setDataSource_post(p, p->setDataSource(fd, offset, length));
779    return mStatus;
780}
781
782status_t MediaPlayerService::Client::setDataSource(
783        const sp<IStreamSource> &source) {
784    // create the right type of player
785    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
786    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
787    if (p == NULL) {
788        return NO_INIT;
789    }
790
791    // now set data source
792    setDataSource_post(p, p->setDataSource(source));
793    return mStatus;
794}
795
796void MediaPlayerService::Client::disconnectNativeWindow() {
797    if (mConnectedWindow != NULL) {
798        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
799                NATIVE_WINDOW_API_MEDIA);
800
801        if (err != OK) {
802            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
803                    strerror(-err), err);
804        }
805    }
806    mConnectedWindow.clear();
807}
808
809status_t MediaPlayerService::Client::setVideoSurfaceTexture(
810        const sp<IGraphicBufferProducer>& bufferProducer)
811{
812    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
813    sp<MediaPlayerBase> p = getPlayer();
814    if (p == 0) return UNKNOWN_ERROR;
815
816    sp<IBinder> binder(bufferProducer == NULL ? NULL :
817            bufferProducer->asBinder());
818    if (mConnectedWindowBinder == binder) {
819        return OK;
820    }
821
822    sp<ANativeWindow> anw;
823    if (bufferProducer != NULL) {
824        anw = new Surface(bufferProducer, true /* controlledByApp */);
825        status_t err = native_window_api_connect(anw.get(),
826                NATIVE_WINDOW_API_MEDIA);
827
828        if (err != OK) {
829            ALOGE("setVideoSurfaceTexture failed: %d", err);
830            // Note that we must do the reset before disconnecting from the ANW.
831            // Otherwise queue/dequeue calls could be made on the disconnected
832            // ANW, which may result in errors.
833            reset();
834
835            disconnectNativeWindow();
836
837            return err;
838        }
839    }
840
841    // Note that we must set the player's new GraphicBufferProducer before
842    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
843    // on the disconnected ANW, which may result in errors.
844    status_t err = p->setVideoSurfaceTexture(bufferProducer);
845
846    disconnectNativeWindow();
847
848    mConnectedWindow = anw;
849
850    if (err == OK) {
851        mConnectedWindowBinder = binder;
852    } else {
853        disconnectNativeWindow();
854    }
855
856    return err;
857}
858
859status_t MediaPlayerService::Client::invoke(const Parcel& request,
860                                            Parcel *reply)
861{
862    sp<MediaPlayerBase> p = getPlayer();
863    if (p == NULL) return UNKNOWN_ERROR;
864    return p->invoke(request, reply);
865}
866
867// This call doesn't need to access the native player.
868status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
869{
870    status_t status;
871    media::Metadata::Filter allow, drop;
872
873    if (unmarshallFilter(filter, &allow, &status) &&
874        unmarshallFilter(filter, &drop, &status)) {
875        Mutex::Autolock lock(mLock);
876
877        mMetadataAllow = allow;
878        mMetadataDrop = drop;
879    }
880    return status;
881}
882
883status_t MediaPlayerService::Client::getMetadata(
884        bool update_only, bool /*apply_filter*/, Parcel *reply)
885{
886    sp<MediaPlayerBase> player = getPlayer();
887    if (player == 0) return UNKNOWN_ERROR;
888
889    status_t status;
890    // Placeholder for the return code, updated by the caller.
891    reply->writeInt32(-1);
892
893    media::Metadata::Filter ids;
894
895    // We don't block notifications while we fetch the data. We clear
896    // mMetadataUpdated first so we don't lose notifications happening
897    // during the rest of this call.
898    {
899        Mutex::Autolock lock(mLock);
900        if (update_only) {
901            ids = mMetadataUpdated;
902        }
903        mMetadataUpdated.clear();
904    }
905
906    media::Metadata metadata(reply);
907
908    metadata.appendHeader();
909    status = player->getMetadata(ids, reply);
910
911    if (status != OK) {
912        metadata.resetParcel();
913        ALOGE("getMetadata failed %d", status);
914        return status;
915    }
916
917    // FIXME: Implement filtering on the result. Not critical since
918    // filtering takes place on the update notifications already. This
919    // would be when all the metadata are fetch and a filter is set.
920
921    // Everything is fine, update the metadata length.
922    metadata.updateLength();
923    return OK;
924}
925
926status_t MediaPlayerService::Client::prepareAsync()
927{
928    ALOGV("[%d] prepareAsync", mConnId);
929    sp<MediaPlayerBase> p = getPlayer();
930    if (p == 0) return UNKNOWN_ERROR;
931    status_t ret = p->prepareAsync();
932#if CALLBACK_ANTAGONIZER
933    ALOGD("start Antagonizer");
934    if (ret == NO_ERROR) mAntagonizer->start();
935#endif
936    return ret;
937}
938
939status_t MediaPlayerService::Client::start()
940{
941    ALOGV("[%d] start", mConnId);
942    sp<MediaPlayerBase> p = getPlayer();
943    if (p == 0) return UNKNOWN_ERROR;
944    p->setLooping(mLoop);
945    return p->start();
946}
947
948status_t MediaPlayerService::Client::stop()
949{
950    ALOGV("[%d] stop", mConnId);
951    sp<MediaPlayerBase> p = getPlayer();
952    if (p == 0) return UNKNOWN_ERROR;
953    return p->stop();
954}
955
956status_t MediaPlayerService::Client::pause()
957{
958    ALOGV("[%d] pause", mConnId);
959    sp<MediaPlayerBase> p = getPlayer();
960    if (p == 0) return UNKNOWN_ERROR;
961    return p->pause();
962}
963
964status_t MediaPlayerService::Client::isPlaying(bool* state)
965{
966    *state = false;
967    sp<MediaPlayerBase> p = getPlayer();
968    if (p == 0) return UNKNOWN_ERROR;
969    *state = p->isPlaying();
970    ALOGV("[%d] isPlaying: %d", mConnId, *state);
971    return NO_ERROR;
972}
973
974status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
975{
976    ALOGV("getCurrentPosition");
977    sp<MediaPlayerBase> p = getPlayer();
978    if (p == 0) return UNKNOWN_ERROR;
979    status_t ret = p->getCurrentPosition(msec);
980    if (ret == NO_ERROR) {
981        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
982    } else {
983        ALOGE("getCurrentPosition returned %d", ret);
984    }
985    return ret;
986}
987
988status_t MediaPlayerService::Client::getDuration(int *msec)
989{
990    ALOGV("getDuration");
991    sp<MediaPlayerBase> p = getPlayer();
992    if (p == 0) return UNKNOWN_ERROR;
993    status_t ret = p->getDuration(msec);
994    if (ret == NO_ERROR) {
995        ALOGV("[%d] getDuration = %d", mConnId, *msec);
996    } else {
997        ALOGE("getDuration returned %d", ret);
998    }
999    return ret;
1000}
1001
1002status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1003    ALOGV("setNextPlayer");
1004    Mutex::Autolock l(mLock);
1005    sp<Client> c = static_cast<Client*>(player.get());
1006    mNextClient = c;
1007
1008    if (c != NULL) {
1009        if (mAudioOutput != NULL) {
1010            mAudioOutput->setNextOutput(c->mAudioOutput);
1011        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1012            ALOGE("no current audio output");
1013        }
1014
1015        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1016            mPlayer->setNextPlayer(mNextClient->getPlayer());
1017        }
1018    }
1019
1020    return OK;
1021}
1022
1023status_t MediaPlayerService::Client::seekTo(int msec)
1024{
1025    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1026    sp<MediaPlayerBase> p = getPlayer();
1027    if (p == 0) return UNKNOWN_ERROR;
1028    return p->seekTo(msec);
1029}
1030
1031status_t MediaPlayerService::Client::reset()
1032{
1033    ALOGV("[%d] reset", mConnId);
1034    mRetransmitEndpointValid = false;
1035    sp<MediaPlayerBase> p = getPlayer();
1036    if (p == 0) return UNKNOWN_ERROR;
1037    return p->reset();
1038}
1039
1040status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1041{
1042    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1043    // TODO: for hardware output, call player instead
1044    Mutex::Autolock l(mLock);
1045    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1046    return NO_ERROR;
1047}
1048
1049status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1050{
1051    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1052    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1053    unmarshallAudioAttributes(parcel, mAudioAttributes);
1054
1055    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1056            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1057            mAudioAttributes->tags);
1058
1059    if (mAudioOutput != 0) {
1060        mAudioOutput->setAudioAttributes(mAudioAttributes);
1061    }
1062    return NO_ERROR;
1063}
1064
1065status_t MediaPlayerService::Client::setLooping(int loop)
1066{
1067    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1068    mLoop = loop;
1069    sp<MediaPlayerBase> p = getPlayer();
1070    if (p != 0) return p->setLooping(loop);
1071    return NO_ERROR;
1072}
1073
1074status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1075{
1076    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1077
1078    // for hardware output, call player instead
1079    sp<MediaPlayerBase> p = getPlayer();
1080    {
1081      Mutex::Autolock l(mLock);
1082      if (p != 0 && p->hardwareOutput()) {
1083          MediaPlayerHWInterface* hwp =
1084                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1085          return hwp->setVolume(leftVolume, rightVolume);
1086      } else {
1087          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1088          return NO_ERROR;
1089      }
1090    }
1091
1092    return NO_ERROR;
1093}
1094
1095status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1096{
1097    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1098    Mutex::Autolock l(mLock);
1099    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1100    return NO_ERROR;
1101}
1102
1103status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1104{
1105    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1106    Mutex::Autolock l(mLock);
1107    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1108    return NO_ERROR;
1109}
1110
1111status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1112    ALOGV("[%d] setParameter(%d)", mConnId, key);
1113    switch (key) {
1114    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1115    {
1116        Mutex::Autolock l(mLock);
1117        return setAudioAttributes_l(request);
1118    }
1119    default:
1120        sp<MediaPlayerBase> p = getPlayer();
1121        if (p == 0) { return UNKNOWN_ERROR; }
1122        return p->setParameter(key, request);
1123    }
1124}
1125
1126status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1127    ALOGV("[%d] getParameter(%d)", mConnId, key);
1128    sp<MediaPlayerBase> p = getPlayer();
1129    if (p == 0) return UNKNOWN_ERROR;
1130    return p->getParameter(key, reply);
1131}
1132
1133status_t MediaPlayerService::Client::setRetransmitEndpoint(
1134        const struct sockaddr_in* endpoint) {
1135
1136    if (NULL != endpoint) {
1137        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1138        uint16_t p = ntohs(endpoint->sin_port);
1139        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1140                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1141    } else {
1142        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1143    }
1144
1145    sp<MediaPlayerBase> p = getPlayer();
1146
1147    // Right now, the only valid time to set a retransmit endpoint is before
1148    // player selection has been made (since the presence or absence of a
1149    // retransmit endpoint is going to determine which player is selected during
1150    // setDataSource).
1151    if (p != 0) return INVALID_OPERATION;
1152
1153    if (NULL != endpoint) {
1154        mRetransmitEndpoint = *endpoint;
1155        mRetransmitEndpointValid = true;
1156    } else {
1157        mRetransmitEndpointValid = false;
1158    }
1159
1160    return NO_ERROR;
1161}
1162
1163status_t MediaPlayerService::Client::getRetransmitEndpoint(
1164        struct sockaddr_in* endpoint)
1165{
1166    if (NULL == endpoint)
1167        return BAD_VALUE;
1168
1169    sp<MediaPlayerBase> p = getPlayer();
1170
1171    if (p != NULL)
1172        return p->getRetransmitEndpoint(endpoint);
1173
1174    if (!mRetransmitEndpointValid)
1175        return NO_INIT;
1176
1177    *endpoint = mRetransmitEndpoint;
1178
1179    return NO_ERROR;
1180}
1181
1182void MediaPlayerService::Client::notify(
1183        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1184{
1185    Client* client = static_cast<Client*>(cookie);
1186    if (client == NULL) {
1187        return;
1188    }
1189
1190    sp<IMediaPlayerClient> c;
1191    {
1192        Mutex::Autolock l(client->mLock);
1193        c = client->mClient;
1194        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1195            if (client->mAudioOutput != NULL)
1196                client->mAudioOutput->switchToNextOutput();
1197            client->mNextClient->start();
1198            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1199        }
1200    }
1201
1202    if (MEDIA_INFO == msg &&
1203        MEDIA_INFO_METADATA_UPDATE == ext1) {
1204        const media::Metadata::Type metadata_type = ext2;
1205
1206        if(client->shouldDropMetadata(metadata_type)) {
1207            return;
1208        }
1209
1210        // Update the list of metadata that have changed. getMetadata
1211        // also access mMetadataUpdated and clears it.
1212        client->addNewMetadataUpdate(metadata_type);
1213    }
1214
1215    if (c != NULL) {
1216        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1217        c->notify(msg, ext1, ext2, obj);
1218    }
1219}
1220
1221
1222bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1223{
1224    Mutex::Autolock lock(mLock);
1225
1226    if (findMetadata(mMetadataDrop, code)) {
1227        return true;
1228    }
1229
1230    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1231        return false;
1232    } else {
1233        return true;
1234    }
1235}
1236
1237
1238void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1239    Mutex::Autolock lock(mLock);
1240    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1241        mMetadataUpdated.add(metadata_type);
1242    }
1243}
1244
1245#if CALLBACK_ANTAGONIZER
1246const int Antagonizer::interval = 10000; // 10 msecs
1247
1248Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1249    mExit(false), mActive(false), mClient(client), mCb(cb)
1250{
1251    createThread(callbackThread, this);
1252}
1253
1254void Antagonizer::kill()
1255{
1256    Mutex::Autolock _l(mLock);
1257    mActive = false;
1258    mExit = true;
1259    mCondition.wait(mLock);
1260}
1261
1262int Antagonizer::callbackThread(void* user)
1263{
1264    ALOGD("Antagonizer started");
1265    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1266    while (!p->mExit) {
1267        if (p->mActive) {
1268            ALOGV("send event");
1269            p->mCb(p->mClient, 0, 0, 0);
1270        }
1271        usleep(interval);
1272    }
1273    Mutex::Autolock _l(p->mLock);
1274    p->mCondition.signal();
1275    ALOGD("Antagonizer stopped");
1276    return 0;
1277}
1278#endif
1279
1280status_t MediaPlayerService::decode(
1281        const sp<IMediaHTTPService> &httpService,
1282        const char* url,
1283        uint32_t *pSampleRate,
1284        int* pNumChannels,
1285        audio_format_t* pFormat,
1286        const sp<IMemoryHeap>& heap,
1287        size_t *pSize)
1288{
1289    ALOGV("decode(%s)", url);
1290    sp<MediaPlayerBase> player;
1291    status_t status = BAD_VALUE;
1292
1293    // Protect our precious, precious DRMd ringtones by only allowing
1294    // decoding of http, but not filesystem paths or content Uris.
1295    // If the application wants to decode those, it should open a
1296    // filedescriptor for them and use that.
1297    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1298        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1299        return BAD_VALUE;
1300    }
1301
1302    player_type playerType =
1303        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1304    ALOGV("player type = %d", playerType);
1305
1306    // create the right type of player
1307    sp<AudioCache> cache = new AudioCache(heap);
1308    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1309    if (player == NULL) goto Exit;
1310    if (player->hardwareOutput()) goto Exit;
1311
1312    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1313
1314    // set data source
1315    if (player->setDataSource(httpService, url) != NO_ERROR) goto Exit;
1316
1317    ALOGV("prepare");
1318    player->prepareAsync();
1319
1320    ALOGV("wait for prepare");
1321    if (cache->wait() != NO_ERROR) goto Exit;
1322
1323    ALOGV("start");
1324    player->start();
1325
1326    ALOGV("wait for playback complete");
1327    cache->wait();
1328    // in case of error, return what was successfully decoded.
1329    if (cache->size() == 0) {
1330        goto Exit;
1331    }
1332
1333    *pSize = cache->size();
1334    *pSampleRate = cache->sampleRate();
1335    *pNumChannels = cache->channelCount();
1336    *pFormat = cache->format();
1337    ALOGV("return size %d sampleRate=%u, channelCount = %d, format = %d",
1338          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1339    status = NO_ERROR;
1340
1341Exit:
1342    if (player != 0) player->reset();
1343    return status;
1344}
1345
1346status_t MediaPlayerService::decode(int fd, int64_t offset, int64_t length,
1347                                       uint32_t *pSampleRate, int* pNumChannels,
1348                                       audio_format_t* pFormat,
1349                                       const sp<IMemoryHeap>& heap, size_t *pSize)
1350{
1351    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1352    sp<MediaPlayerBase> player;
1353    status_t status = BAD_VALUE;
1354
1355    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1356                                                               fd,
1357                                                               offset,
1358                                                               length);
1359    ALOGV("player type = %d", playerType);
1360
1361    // create the right type of player
1362    sp<AudioCache> cache = new AudioCache(heap);
1363    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1364    if (player == NULL) goto Exit;
1365    if (player->hardwareOutput()) goto Exit;
1366
1367    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1368
1369    // set data source
1370    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1371
1372    ALOGV("prepare");
1373    player->prepareAsync();
1374
1375    ALOGV("wait for prepare");
1376    if (cache->wait() != NO_ERROR) goto Exit;
1377
1378    ALOGV("start");
1379    player->start();
1380
1381    ALOGV("wait for playback complete");
1382    cache->wait();
1383    // in case of error, return what was successfully decoded.
1384    if (cache->size() == 0) {
1385        goto Exit;
1386    }
1387
1388    *pSize = cache->size();
1389    *pSampleRate = cache->sampleRate();
1390    *pNumChannels = cache->channelCount();
1391    *pFormat = cache->format();
1392    ALOGV("return size %d, sampleRate=%u, channelCount = %d, format = %d",
1393          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1394    status = NO_ERROR;
1395
1396Exit:
1397    if (player != 0) player->reset();
1398    ::close(fd);
1399    return status;
1400}
1401
1402
1403#undef LOG_TAG
1404#define LOG_TAG "AudioSink"
1405MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1406        const audio_attributes_t* attr)
1407    : mCallback(NULL),
1408      mCallbackCookie(NULL),
1409      mCallbackData(NULL),
1410      mBytesWritten(0),
1411      mSessionId(sessionId),
1412      mUid(uid),
1413      mPid(pid),
1414      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1415    ALOGV("AudioOutput(%d)", sessionId);
1416    mStreamType = AUDIO_STREAM_MUSIC;
1417    mLeftVolume = 1.0;
1418    mRightVolume = 1.0;
1419    mPlaybackRatePermille = 1000;
1420    mSampleRateHz = 0;
1421    mMsecsPerFrame = 0;
1422    mAuxEffectId = 0;
1423    mSendLevel = 0.0;
1424    setMinBufferCount();
1425    mAttributes = attr;
1426}
1427
1428MediaPlayerService::AudioOutput::~AudioOutput()
1429{
1430    close();
1431    delete mCallbackData;
1432}
1433
1434void MediaPlayerService::AudioOutput::setMinBufferCount()
1435{
1436    char value[PROPERTY_VALUE_MAX];
1437    if (property_get("ro.kernel.qemu", value, 0)) {
1438        mIsOnEmulator = true;
1439        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1440    }
1441}
1442
1443bool MediaPlayerService::AudioOutput::isOnEmulator()
1444{
1445    setMinBufferCount();
1446    return mIsOnEmulator;
1447}
1448
1449int MediaPlayerService::AudioOutput::getMinBufferCount()
1450{
1451    setMinBufferCount();
1452    return mMinBufferCount;
1453}
1454
1455ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1456{
1457    if (mTrack == 0) return NO_INIT;
1458    return mTrack->frameCount() * frameSize();
1459}
1460
1461ssize_t MediaPlayerService::AudioOutput::frameCount() const
1462{
1463    if (mTrack == 0) return NO_INIT;
1464    return mTrack->frameCount();
1465}
1466
1467ssize_t MediaPlayerService::AudioOutput::channelCount() const
1468{
1469    if (mTrack == 0) return NO_INIT;
1470    return mTrack->channelCount();
1471}
1472
1473ssize_t MediaPlayerService::AudioOutput::frameSize() const
1474{
1475    if (mTrack == 0) return NO_INIT;
1476    return mTrack->frameSize();
1477}
1478
1479uint32_t MediaPlayerService::AudioOutput::latency () const
1480{
1481    if (mTrack == 0) return 0;
1482    return mTrack->latency();
1483}
1484
1485float MediaPlayerService::AudioOutput::msecsPerFrame() const
1486{
1487    return mMsecsPerFrame;
1488}
1489
1490status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1491{
1492    if (mTrack == 0) return NO_INIT;
1493    return mTrack->getPosition(position);
1494}
1495
1496status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1497{
1498    if (mTrack == 0) return NO_INIT;
1499    *frameswritten = mBytesWritten / frameSize();
1500    return OK;
1501}
1502
1503status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1504{
1505    if (mTrack == 0) return NO_INIT;
1506    return mTrack->setParameters(keyValuePairs);
1507}
1508
1509String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1510{
1511    if (mTrack == 0) return String8::empty();
1512    return mTrack->getParameters(keys);
1513}
1514
1515void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1516    mAttributes = attributes;
1517}
1518
1519void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1520{
1521    ALOGV("deleteRecycledTrack");
1522
1523    if (mRecycledTrack != 0) {
1524
1525        if (mCallbackData != NULL) {
1526            mCallbackData->setOutput(NULL);
1527            mCallbackData->endTrackSwitch();
1528        }
1529
1530        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1531            mRecycledTrack->flush();
1532        }
1533        // An offloaded track isn't flushed because the STREAM_END is reported
1534        // slightly prematurely to allow time for the gapless track switch
1535        // but this means that if we decide not to recycle the track there
1536        // could be a small amount of residual data still playing. We leave
1537        // AudioFlinger to drain the track.
1538
1539        mRecycledTrack.clear();
1540        delete mCallbackData;
1541        mCallbackData = NULL;
1542        close();
1543    }
1544}
1545
1546status_t MediaPlayerService::AudioOutput::open(
1547        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1548        audio_format_t format, int bufferCount,
1549        AudioCallback cb, void *cookie,
1550        audio_output_flags_t flags,
1551        const audio_offload_info_t *offloadInfo)
1552{
1553    mCallback = cb;
1554    mCallbackCookie = cookie;
1555
1556    // Check argument "bufferCount" against the mininum buffer count
1557    if (bufferCount < mMinBufferCount) {
1558        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1559        bufferCount = mMinBufferCount;
1560
1561    }
1562    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1563                format, bufferCount, mSessionId, flags);
1564    uint32_t afSampleRate;
1565    size_t afFrameCount;
1566    size_t frameCount;
1567
1568    // offloading is only supported in callback mode for now.
1569    // offloadInfo must be present if offload flag is set
1570    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1571            ((cb == NULL) || (offloadInfo == NULL))) {
1572        return BAD_VALUE;
1573    }
1574
1575    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1576        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1577    } else {
1578        uint32_t afSampleRate;
1579        size_t afFrameCount;
1580
1581        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1582            return NO_INIT;
1583        }
1584        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1585            return NO_INIT;
1586        }
1587
1588        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1589    }
1590
1591    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1592        channelMask = audio_channel_out_mask_from_count(channelCount);
1593        if (0 == channelMask) {
1594            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1595            return NO_INIT;
1596        }
1597    }
1598
1599    // Check whether we can recycle the track
1600    bool reuse = false;
1601    bool bothOffloaded = false;
1602
1603    if (mRecycledTrack != 0) {
1604        // check whether we are switching between two offloaded tracks
1605        bothOffloaded = (flags & mRecycledTrack->getFlags()
1606                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1607
1608        // check if the existing track can be reused as-is, or if a new track needs to be created.
1609        reuse = true;
1610
1611        if ((mCallbackData == NULL && mCallback != NULL) ||
1612                (mCallbackData != NULL && mCallback == NULL)) {
1613            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1614            ALOGV("can't chain callback and write");
1615            reuse = false;
1616        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1617                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1618            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1619                  mRecycledTrack->getSampleRate(), sampleRate,
1620                  mRecycledTrack->channelCount(), channelCount);
1621            reuse = false;
1622        } else if (flags != mFlags) {
1623            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1624            reuse = false;
1625        } else if (mRecycledTrack->format() != format) {
1626            reuse = false;
1627        }
1628    } else {
1629        ALOGV("no track available to recycle");
1630    }
1631
1632    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1633
1634    // If we can't recycle and both tracks are offloaded
1635    // we must close the previous output before opening a new one
1636    if (bothOffloaded && !reuse) {
1637        ALOGV("both offloaded and not recycling");
1638        deleteRecycledTrack();
1639    }
1640
1641    sp<AudioTrack> t;
1642    CallbackData *newcbd = NULL;
1643
1644    // We don't attempt to create a new track if we are recycling an
1645    // offloaded track. But, if we are recycling a non-offloaded or we
1646    // are switching where one is offloaded and one isn't then we create
1647    // the new track in advance so that we can read additional stream info
1648
1649    if (!(reuse && bothOffloaded)) {
1650        ALOGV("creating new AudioTrack");
1651
1652        if (mCallback != NULL) {
1653            newcbd = new CallbackData(this);
1654            t = new AudioTrack(
1655                    mStreamType,
1656                    sampleRate,
1657                    format,
1658                    channelMask,
1659                    frameCount,
1660                    flags,
1661                    CallbackWrapper,
1662                    newcbd,
1663                    0,  // notification frames
1664                    mSessionId,
1665                    AudioTrack::TRANSFER_CALLBACK,
1666                    offloadInfo,
1667                    mUid,
1668                    mPid,
1669                    mAttributes);
1670        } else {
1671            t = new AudioTrack(
1672                    mStreamType,
1673                    sampleRate,
1674                    format,
1675                    channelMask,
1676                    frameCount,
1677                    flags,
1678                    NULL, // callback
1679                    NULL, // user data
1680                    0, // notification frames
1681                    mSessionId,
1682                    AudioTrack::TRANSFER_DEFAULT,
1683                    NULL, // offload info
1684                    mUid,
1685                    mPid,
1686                    mAttributes);
1687        }
1688
1689        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1690            ALOGE("Unable to create audio track");
1691            delete newcbd;
1692            return NO_INIT;
1693        } else {
1694            // successful AudioTrack initialization implies a legacy stream type was generated
1695            // from the audio attributes
1696            mStreamType = t->streamType();
1697        }
1698    }
1699
1700    if (reuse) {
1701        CHECK(mRecycledTrack != NULL);
1702
1703        if (!bothOffloaded) {
1704            if (mRecycledTrack->frameCount() != t->frameCount()) {
1705                ALOGV("framecount differs: %u/%u frames",
1706                      mRecycledTrack->frameCount(), t->frameCount());
1707                reuse = false;
1708            }
1709        }
1710
1711        if (reuse) {
1712            ALOGV("chaining to next output and recycling track");
1713            close();
1714            mTrack = mRecycledTrack;
1715            mRecycledTrack.clear();
1716            if (mCallbackData != NULL) {
1717                mCallbackData->setOutput(this);
1718            }
1719            delete newcbd;
1720            return OK;
1721        }
1722    }
1723
1724    // we're not going to reuse the track, unblock and flush it
1725    // this was done earlier if both tracks are offloaded
1726    if (!bothOffloaded) {
1727        deleteRecycledTrack();
1728    }
1729
1730    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1731
1732    mCallbackData = newcbd;
1733    ALOGV("setVolume");
1734    t->setVolume(mLeftVolume, mRightVolume);
1735
1736    mSampleRateHz = sampleRate;
1737    mFlags = flags;
1738    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1739    uint32_t pos;
1740    if (t->getPosition(&pos) == OK) {
1741        mBytesWritten = uint64_t(pos) * t->frameSize();
1742    }
1743    mTrack = t;
1744
1745    status_t res = NO_ERROR;
1746    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1747        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1748        if (res == NO_ERROR) {
1749            t->setAuxEffectSendLevel(mSendLevel);
1750            res = t->attachAuxEffect(mAuxEffectId);
1751        }
1752    }
1753    ALOGV("open() DONE status %d", res);
1754    return res;
1755}
1756
1757status_t MediaPlayerService::AudioOutput::start()
1758{
1759    ALOGV("start");
1760    if (mCallbackData != NULL) {
1761        mCallbackData->endTrackSwitch();
1762    }
1763    if (mTrack != 0) {
1764        mTrack->setVolume(mLeftVolume, mRightVolume);
1765        mTrack->setAuxEffectSendLevel(mSendLevel);
1766        return mTrack->start();
1767    }
1768    return NO_INIT;
1769}
1770
1771void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1772    mNextOutput = nextOutput;
1773}
1774
1775
1776void MediaPlayerService::AudioOutput::switchToNextOutput() {
1777    ALOGV("switchToNextOutput");
1778    if (mNextOutput != NULL) {
1779        if (mCallbackData != NULL) {
1780            mCallbackData->beginTrackSwitch();
1781        }
1782        delete mNextOutput->mCallbackData;
1783        mNextOutput->mCallbackData = mCallbackData;
1784        mCallbackData = NULL;
1785        mNextOutput->mRecycledTrack = mTrack;
1786        mTrack.clear();
1787        mNextOutput->mSampleRateHz = mSampleRateHz;
1788        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1789        mNextOutput->mBytesWritten = mBytesWritten;
1790        mNextOutput->mFlags = mFlags;
1791    }
1792}
1793
1794ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1795{
1796    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1797
1798    //ALOGV("write(%p, %u)", buffer, size);
1799    if (mTrack != 0) {
1800        ssize_t ret = mTrack->write(buffer, size);
1801        mBytesWritten += ret;
1802        return ret;
1803    }
1804    return NO_INIT;
1805}
1806
1807void MediaPlayerService::AudioOutput::stop()
1808{
1809    ALOGV("stop");
1810    if (mTrack != 0) mTrack->stop();
1811}
1812
1813void MediaPlayerService::AudioOutput::flush()
1814{
1815    ALOGV("flush");
1816    if (mTrack != 0) mTrack->flush();
1817}
1818
1819void MediaPlayerService::AudioOutput::pause()
1820{
1821    ALOGV("pause");
1822    if (mTrack != 0) mTrack->pause();
1823}
1824
1825void MediaPlayerService::AudioOutput::close()
1826{
1827    ALOGV("close");
1828    mTrack.clear();
1829}
1830
1831void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1832{
1833    ALOGV("setVolume(%f, %f)", left, right);
1834    mLeftVolume = left;
1835    mRightVolume = right;
1836    if (mTrack != 0) {
1837        mTrack->setVolume(left, right);
1838    }
1839}
1840
1841status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1842{
1843    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1844    status_t res = NO_ERROR;
1845    if (mTrack != 0) {
1846        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1847    } else {
1848        res = NO_INIT;
1849    }
1850    mPlaybackRatePermille = ratePermille;
1851    if (mSampleRateHz != 0) {
1852        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1853    }
1854    return res;
1855}
1856
1857status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1858{
1859    ALOGV("setAuxEffectSendLevel(%f)", level);
1860    mSendLevel = level;
1861    if (mTrack != 0) {
1862        return mTrack->setAuxEffectSendLevel(level);
1863    }
1864    return NO_ERROR;
1865}
1866
1867status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1868{
1869    ALOGV("attachAuxEffect(%d)", effectId);
1870    mAuxEffectId = effectId;
1871    if (mTrack != 0) {
1872        return mTrack->attachAuxEffect(effectId);
1873    }
1874    return NO_ERROR;
1875}
1876
1877// static
1878void MediaPlayerService::AudioOutput::CallbackWrapper(
1879        int event, void *cookie, void *info) {
1880    //ALOGV("callbackwrapper");
1881    CallbackData *data = (CallbackData*)cookie;
1882    data->lock();
1883    AudioOutput *me = data->getOutput();
1884    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1885    if (me == NULL) {
1886        // no output set, likely because the track was scheduled to be reused
1887        // by another player, but the format turned out to be incompatible.
1888        data->unlock();
1889        if (buffer != NULL) {
1890            buffer->size = 0;
1891        }
1892        return;
1893    }
1894
1895    switch(event) {
1896    case AudioTrack::EVENT_MORE_DATA: {
1897        size_t actualSize = (*me->mCallback)(
1898                me, buffer->raw, buffer->size, me->mCallbackCookie,
1899                CB_EVENT_FILL_BUFFER);
1900
1901        if ((me->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0 &&
1902            actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1903            // We've reached EOS but the audio track is not stopped yet,
1904            // keep playing silence.
1905
1906            memset(buffer->raw, 0, buffer->size);
1907            actualSize = buffer->size;
1908        }
1909
1910        buffer->size = actualSize;
1911        } break;
1912
1913
1914    case AudioTrack::EVENT_STREAM_END:
1915        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1916        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1917                me->mCallbackCookie, CB_EVENT_STREAM_END);
1918        break;
1919
1920    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1921        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1922        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1923                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1924        break;
1925
1926    default:
1927        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1928    }
1929
1930    data->unlock();
1931}
1932
1933int MediaPlayerService::AudioOutput::getSessionId() const
1934{
1935    return mSessionId;
1936}
1937
1938uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1939{
1940    if (mTrack == 0) return 0;
1941    return mTrack->getSampleRate();
1942}
1943
1944#undef LOG_TAG
1945#define LOG_TAG "AudioCache"
1946MediaPlayerService::AudioCache::AudioCache(const sp<IMemoryHeap>& heap) :
1947    mHeap(heap), mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1948    mError(NO_ERROR),  mCommandComplete(false)
1949{
1950}
1951
1952uint32_t MediaPlayerService::AudioCache::latency () const
1953{
1954    return 0;
1955}
1956
1957float MediaPlayerService::AudioCache::msecsPerFrame() const
1958{
1959    return mMsecsPerFrame;
1960}
1961
1962status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1963{
1964    if (position == 0) return BAD_VALUE;
1965    *position = mSize;
1966    return NO_ERROR;
1967}
1968
1969status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1970{
1971    if (written == 0) return BAD_VALUE;
1972    *written = mSize;
1973    return NO_ERROR;
1974}
1975
1976////////////////////////////////////////////////////////////////////////////////
1977
1978struct CallbackThread : public Thread {
1979    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1980                   MediaPlayerBase::AudioSink::AudioCallback cb,
1981                   void *cookie);
1982
1983protected:
1984    virtual ~CallbackThread();
1985
1986    virtual bool threadLoop();
1987
1988private:
1989    wp<MediaPlayerBase::AudioSink> mSink;
1990    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1991    void *mCookie;
1992    void *mBuffer;
1993    size_t mBufferSize;
1994
1995    CallbackThread(const CallbackThread &);
1996    CallbackThread &operator=(const CallbackThread &);
1997};
1998
1999CallbackThread::CallbackThread(
2000        const wp<MediaPlayerBase::AudioSink> &sink,
2001        MediaPlayerBase::AudioSink::AudioCallback cb,
2002        void *cookie)
2003    : mSink(sink),
2004      mCallback(cb),
2005      mCookie(cookie),
2006      mBuffer(NULL),
2007      mBufferSize(0) {
2008}
2009
2010CallbackThread::~CallbackThread() {
2011    if (mBuffer) {
2012        free(mBuffer);
2013        mBuffer = NULL;
2014    }
2015}
2016
2017bool CallbackThread::threadLoop() {
2018    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2019    if (sink == NULL) {
2020        return false;
2021    }
2022
2023    if (mBuffer == NULL) {
2024        mBufferSize = sink->bufferSize();
2025        mBuffer = malloc(mBufferSize);
2026    }
2027
2028    size_t actualSize =
2029        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2030                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2031
2032    if (actualSize > 0) {
2033        sink->write(mBuffer, actualSize);
2034    }
2035
2036    return true;
2037}
2038
2039////////////////////////////////////////////////////////////////////////////////
2040
2041status_t MediaPlayerService::AudioCache::open(
2042        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
2043        audio_format_t format, int bufferCount,
2044        AudioCallback cb, void *cookie, audio_output_flags_t /*flags*/,
2045        const audio_offload_info_t* /*offloadInfo*/)
2046{
2047    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
2048    if (mHeap->getHeapID() < 0) {
2049        return NO_INIT;
2050    }
2051
2052    mSampleRate = sampleRate;
2053    mChannelCount = (uint16_t)channelCount;
2054    mFormat = format;
2055    mMsecsPerFrame = 1.e3 / (float) sampleRate;
2056
2057    if (cb != NULL) {
2058        mCallbackThread = new CallbackThread(this, cb, cookie);
2059    }
2060    return NO_ERROR;
2061}
2062
2063status_t MediaPlayerService::AudioCache::start() {
2064    if (mCallbackThread != NULL) {
2065        mCallbackThread->run("AudioCache callback");
2066    }
2067    return NO_ERROR;
2068}
2069
2070void MediaPlayerService::AudioCache::stop() {
2071    if (mCallbackThread != NULL) {
2072        mCallbackThread->requestExitAndWait();
2073    }
2074}
2075
2076ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
2077{
2078    ALOGV("write(%p, %u)", buffer, size);
2079    if ((buffer == 0) || (size == 0)) return size;
2080
2081    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
2082    if (p == NULL) return NO_INIT;
2083    p += mSize;
2084    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
2085    if (mSize + size > mHeap->getSize()) {
2086        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
2087        size = mHeap->getSize() - mSize;
2088    }
2089    memcpy(p, buffer, size);
2090    mSize += size;
2091    return size;
2092}
2093
2094// call with lock held
2095status_t MediaPlayerService::AudioCache::wait()
2096{
2097    Mutex::Autolock lock(mLock);
2098    while (!mCommandComplete) {
2099        mSignal.wait(mLock);
2100    }
2101    mCommandComplete = false;
2102
2103    if (mError == NO_ERROR) {
2104        ALOGV("wait - success");
2105    } else {
2106        ALOGV("wait - error");
2107    }
2108    return mError;
2109}
2110
2111void MediaPlayerService::AudioCache::notify(
2112        void* cookie, int msg, int ext1, int ext2, const Parcel* /*obj*/)
2113{
2114    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
2115    AudioCache* p = static_cast<AudioCache*>(cookie);
2116
2117    // ignore buffering messages
2118    switch (msg)
2119    {
2120    case MEDIA_ERROR:
2121        ALOGE("Error %d, %d occurred", ext1, ext2);
2122        p->mError = ext1;
2123        break;
2124    case MEDIA_PREPARED:
2125        ALOGV("prepared");
2126        break;
2127    case MEDIA_PLAYBACK_COMPLETE:
2128        ALOGV("playback complete");
2129        break;
2130    default:
2131        ALOGV("ignored");
2132        return;
2133    }
2134
2135    // wake up thread
2136    Mutex::Autolock lock(p->mLock);
2137    p->mCommandComplete = true;
2138    p->mSignal.signal();
2139}
2140
2141int MediaPlayerService::AudioCache::getSessionId() const
2142{
2143    return 0;
2144}
2145
2146uint32_t MediaPlayerService::AudioCache::getSampleRate() const
2147{
2148    if (mMsecsPerFrame == 0) {
2149        return 0;
2150    }
2151    return (uint32_t)(1.e3 / mMsecsPerFrame);
2152}
2153
2154void MediaPlayerService::addBatteryData(uint32_t params)
2155{
2156    Mutex::Autolock lock(mLock);
2157
2158    int32_t time = systemTime() / 1000000L;
2159
2160    // change audio output devices. This notification comes from AudioFlinger
2161    if ((params & kBatteryDataSpeakerOn)
2162            || (params & kBatteryDataOtherAudioDeviceOn)) {
2163
2164        int deviceOn[NUM_AUDIO_DEVICES];
2165        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2166            deviceOn[i] = 0;
2167        }
2168
2169        if ((params & kBatteryDataSpeakerOn)
2170                && (params & kBatteryDataOtherAudioDeviceOn)) {
2171            deviceOn[SPEAKER_AND_OTHER] = 1;
2172        } else if (params & kBatteryDataSpeakerOn) {
2173            deviceOn[SPEAKER] = 1;
2174        } else {
2175            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2176        }
2177
2178        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2179            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2180
2181                if (mBatteryAudio.refCount > 0) { // if playing audio
2182                    if (!deviceOn[i]) {
2183                        mBatteryAudio.lastTime[i] += time;
2184                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2185                        mBatteryAudio.lastTime[i] = 0;
2186                    } else {
2187                        mBatteryAudio.lastTime[i] = 0 - time;
2188                    }
2189                }
2190
2191                mBatteryAudio.deviceOn[i] = deviceOn[i];
2192            }
2193        }
2194        return;
2195    }
2196
2197    // an sudio stream is started
2198    if (params & kBatteryDataAudioFlingerStart) {
2199        // record the start time only if currently no other audio
2200        // is being played
2201        if (mBatteryAudio.refCount == 0) {
2202            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2203                if (mBatteryAudio.deviceOn[i]) {
2204                    mBatteryAudio.lastTime[i] -= time;
2205                }
2206            }
2207        }
2208
2209        mBatteryAudio.refCount ++;
2210        return;
2211
2212    } else if (params & kBatteryDataAudioFlingerStop) {
2213        if (mBatteryAudio.refCount <= 0) {
2214            ALOGW("Battery track warning: refCount is <= 0");
2215            return;
2216        }
2217
2218        // record the stop time only if currently this is the only
2219        // audio being played
2220        if (mBatteryAudio.refCount == 1) {
2221            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2222                if (mBatteryAudio.deviceOn[i]) {
2223                    mBatteryAudio.lastTime[i] += time;
2224                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2225                    mBatteryAudio.lastTime[i] = 0;
2226                }
2227            }
2228        }
2229
2230        mBatteryAudio.refCount --;
2231        return;
2232    }
2233
2234    int uid = IPCThreadState::self()->getCallingUid();
2235    if (uid == AID_MEDIA) {
2236        return;
2237    }
2238    int index = mBatteryData.indexOfKey(uid);
2239
2240    if (index < 0) { // create a new entry for this UID
2241        BatteryUsageInfo info;
2242        info.audioTotalTime = 0;
2243        info.videoTotalTime = 0;
2244        info.audioLastTime = 0;
2245        info.videoLastTime = 0;
2246        info.refCount = 0;
2247
2248        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2249            ALOGE("Battery track error: no memory for new app");
2250            return;
2251        }
2252    }
2253
2254    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2255
2256    if (params & kBatteryDataCodecStarted) {
2257        if (params & kBatteryDataTrackAudio) {
2258            info.audioLastTime -= time;
2259            info.refCount ++;
2260        }
2261        if (params & kBatteryDataTrackVideo) {
2262            info.videoLastTime -= time;
2263            info.refCount ++;
2264        }
2265    } else {
2266        if (info.refCount == 0) {
2267            ALOGW("Battery track warning: refCount is already 0");
2268            return;
2269        } else if (info.refCount < 0) {
2270            ALOGE("Battery track error: refCount < 0");
2271            mBatteryData.removeItem(uid);
2272            return;
2273        }
2274
2275        if (params & kBatteryDataTrackAudio) {
2276            info.audioLastTime += time;
2277            info.refCount --;
2278        }
2279        if (params & kBatteryDataTrackVideo) {
2280            info.videoLastTime += time;
2281            info.refCount --;
2282        }
2283
2284        // no stream is being played by this UID
2285        if (info.refCount == 0) {
2286            info.audioTotalTime += info.audioLastTime;
2287            info.audioLastTime = 0;
2288            info.videoTotalTime += info.videoLastTime;
2289            info.videoLastTime = 0;
2290        }
2291    }
2292}
2293
2294status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2295    Mutex::Autolock lock(mLock);
2296
2297    // audio output devices usage
2298    int32_t time = systemTime() / 1000000L; //in ms
2299    int32_t totalTime;
2300
2301    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2302        totalTime = mBatteryAudio.totalTime[i];
2303
2304        if (mBatteryAudio.deviceOn[i]
2305            && (mBatteryAudio.lastTime[i] != 0)) {
2306                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2307                totalTime += tmpTime;
2308        }
2309
2310        reply->writeInt32(totalTime);
2311        // reset the total time
2312        mBatteryAudio.totalTime[i] = 0;
2313   }
2314
2315    // codec usage
2316    BatteryUsageInfo info;
2317    int size = mBatteryData.size();
2318
2319    reply->writeInt32(size);
2320    int i = 0;
2321
2322    while (i < size) {
2323        info = mBatteryData.valueAt(i);
2324
2325        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2326        reply->writeInt32(info.audioTotalTime);
2327        reply->writeInt32(info.videoTotalTime);
2328
2329        info.audioTotalTime = 0;
2330        info.videoTotalTime = 0;
2331
2332        // remove the UID entry where no stream is being played
2333        if (info.refCount <= 0) {
2334            mBatteryData.removeItemsAt(i);
2335            size --;
2336            i --;
2337        }
2338        i++;
2339    }
2340    return NO_ERROR;
2341}
2342} // namespace android
2343