MediaPlayerService.cpp revision d9d7fa0873796ac661c44a7fcd6ad5ff697ff01f 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <sys/time.h>
27#include <dirent.h>
28#include <unistd.h>
29
30#include <string.h>
31
32#include <cutils/atomic.h>
33#include <cutils/properties.h> // for property_get
34
35#include <utils/misc.h>
36
37#include <binder/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46
47#include <media/IMediaHTTPService.h>
48#include <media/IRemoteDisplay.h>
49#include <media/IRemoteDisplayClient.h>
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#include <media/stagefright/AudioPlayer.h>
58#include <media/stagefright/foundation/ADebug.h>
59
60#include <system/audio.h>
61
62#include <private/android_filesystem_config.h>
63
64#include "ActivityManager.h"
65#include "MediaRecorderClient.h"
66#include "MediaPlayerService.h"
67#include "MetadataRetrieverClient.h"
68#include "MediaPlayerFactory.h"
69
70#include "MidiFile.h"
71#include "TestPlayerStub.h"
72#include "StagefrightPlayer.h"
73#include "nuplayer/NuPlayerDriver.h"
74
75#include <OMX.h>
76
77#include "Crypto.h"
78#include "Drm.h"
79#include "HDCP.h"
80#include "HTTPBase.h"
81#include "RemoteDisplay.h"
82
83namespace {
84using android::media::Metadata;
85using android::status_t;
86using android::OK;
87using android::BAD_VALUE;
88using android::NOT_ENOUGH_DATA;
89using android::Parcel;
90
91// Max number of entries in the filter.
92const int kMaxFilterSize = 64;  // I pulled that out of thin air.
93
94// FIXME: Move all the metadata related function in the Metadata.cpp
95
96
97// Unmarshall a filter from a Parcel.
98// Filter format in a parcel:
99//
100//  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
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102// |                       number of entries (n)                   |
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type 1                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       metadata type 2                         |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108//  ....
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       metadata type n                         |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112//
113// @param p Parcel that should start with a filter.
114// @param[out] filter On exit contains the list of metadata type to be
115//                    filtered.
116// @param[out] status On exit contains the status code to be returned.
117// @return true if the parcel starts with a valid filter.
118bool unmarshallFilter(const Parcel& p,
119                      Metadata::Filter *filter,
120                      status_t *status)
121{
122    int32_t val;
123    if (p.readInt32(&val) != OK)
124    {
125        ALOGE("Failed to read filter's length");
126        *status = NOT_ENOUGH_DATA;
127        return false;
128    }
129
130    if( val > kMaxFilterSize || val < 0)
131    {
132        ALOGE("Invalid filter len %d", val);
133        *status = BAD_VALUE;
134        return false;
135    }
136
137    const size_t num = val;
138
139    filter->clear();
140    filter->setCapacity(num);
141
142    size_t size = num * sizeof(Metadata::Type);
143
144
145    if (p.dataAvail() < size)
146    {
147        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
148        *status = NOT_ENOUGH_DATA;
149        return false;
150    }
151
152    const Metadata::Type *data =
153            static_cast<const Metadata::Type*>(p.readInplace(size));
154
155    if (NULL == data)
156    {
157        ALOGE("Filter had no data");
158        *status = BAD_VALUE;
159        return false;
160    }
161
162    // TODO: The stl impl of vector would be more efficient here
163    // because it degenerates into a memcpy on pod types. Try to
164    // replace later or use stl::set.
165    for (size_t i = 0; i < num; ++i)
166    {
167        filter->add(*data);
168        ++data;
169    }
170    *status = OK;
171    return true;
172}
173
174// @param filter Of metadata type.
175// @param val To be searched.
176// @return true if a match was found.
177bool findMetadata(const Metadata::Filter& filter, const int32_t val)
178{
179    // Deal with empty and ANY right away
180    if (filter.isEmpty()) return false;
181    if (filter[0] == Metadata::kAny) return true;
182
183    return filter.indexOf(val) >= 0;
184}
185
186}  // anonymous namespace
187
188
189namespace {
190using android::Parcel;
191using android::String16;
192
193// marshalling tag indicating flattened utf16 tags
194// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
195const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
196
197// Audio attributes format in a parcel:
198//
199//  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
200// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
201// |                       usage                                   |
202// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
203// |                       content_type                            |
204// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
205// |                       flags                                   |
206// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
208// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209// |                       flattened tags in UTF16                 |
210// |                         ...                                   |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212//
213// @param p Parcel that contains audio attributes.
214// @param[out] attributes On exit points to an initialized audio_attributes_t structure
215// @param[out] status On exit contains the status code to be returned.
216void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
217{
218    attributes->usage = (audio_usage_t) parcel.readInt32();
219    attributes->content_type = (audio_content_type_t) parcel.readInt32();
220    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
221    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
222    if (hasFlattenedTag) {
223        // the tags are UTF16, convert to UTF8
224        String16 tags = parcel.readString16();
225        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
226        if (realTagSize <= 0) {
227            strcpy(attributes->tags, "");
228        } else {
229            // copy the flattened string into the attributes as the destination for the conversion:
230            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
231            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
232                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
233            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
234        }
235    } else {
236        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
237        strcpy(attributes->tags, "");
238    }
239}
240} // anonymous namespace
241
242
243namespace android {
244
245static bool checkPermission(const char* permissionString) {
246#ifndef HAVE_ANDROID_OS
247    return true;
248#endif
249    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
250    bool ok = checkCallingPermission(String16(permissionString));
251    if (!ok) ALOGE("Request requires %s", permissionString);
252    return ok;
253}
254
255// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
256/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
257/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
258
259void MediaPlayerService::instantiate() {
260    defaultServiceManager()->addService(
261            String16("media.player"), new MediaPlayerService());
262}
263
264MediaPlayerService::MediaPlayerService()
265{
266    ALOGV("MediaPlayerService created");
267    mNextConnId = 1;
268
269    mBatteryAudio.refCount = 0;
270    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
271        mBatteryAudio.deviceOn[i] = 0;
272        mBatteryAudio.lastTime[i] = 0;
273        mBatteryAudio.totalTime[i] = 0;
274    }
275    // speaker is on by default
276    mBatteryAudio.deviceOn[SPEAKER] = 1;
277
278    MediaPlayerFactory::registerBuiltinFactories();
279}
280
281MediaPlayerService::~MediaPlayerService()
282{
283    ALOGV("MediaPlayerService destroyed");
284}
285
286sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
287{
288    pid_t pid = IPCThreadState::self()->getCallingPid();
289    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
290    wp<MediaRecorderClient> w = recorder;
291    Mutex::Autolock lock(mLock);
292    mMediaRecorderClients.add(w);
293    ALOGV("Create new media recorder client from pid %d", pid);
294    return recorder;
295}
296
297void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
298{
299    Mutex::Autolock lock(mLock);
300    mMediaRecorderClients.remove(client);
301    ALOGV("Delete media recorder client");
302}
303
304sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
305{
306    pid_t pid = IPCThreadState::self()->getCallingPid();
307    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
308    ALOGV("Create new media retriever from pid %d", pid);
309    return retriever;
310}
311
312sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
313        int audioSessionId)
314{
315    pid_t pid = IPCThreadState::self()->getCallingPid();
316    int32_t connId = android_atomic_inc(&mNextConnId);
317
318    sp<Client> c = new Client(
319            this, pid, connId, client, audioSessionId,
320            IPCThreadState::self()->getCallingUid());
321
322    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
323         IPCThreadState::self()->getCallingUid());
324
325    wp<Client> w = c;
326    {
327        Mutex::Autolock lock(mLock);
328        mClients.add(w);
329    }
330    return c;
331}
332
333sp<IOMX> MediaPlayerService::getOMX() {
334    Mutex::Autolock autoLock(mLock);
335
336    if (mOMX.get() == NULL) {
337        mOMX = new OMX;
338    }
339
340    return mOMX;
341}
342
343sp<ICrypto> MediaPlayerService::makeCrypto() {
344    return new Crypto;
345}
346
347sp<IDrm> MediaPlayerService::makeDrm() {
348    return new Drm;
349}
350
351sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
352    return new HDCP(createEncryptionModule);
353}
354
355sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
356        const sp<IRemoteDisplayClient>& client, const String8& iface) {
357    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
358        return NULL;
359    }
360
361    return new RemoteDisplay(client, iface.string());
362}
363
364status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& /*args*/) const
365{
366    const size_t SIZE = 256;
367    char buffer[SIZE];
368    String8 result;
369
370    result.append(" AudioCache\n");
371    if (mHeap != 0) {
372        snprintf(buffer, 255, "  heap base(%p), size(%zu), flags(%d)\n",
373                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags());
374        result.append(buffer);
375    }
376    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%zd)\n",
377            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
378    result.append(buffer);
379    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
380            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
381    result.append(buffer);
382    ::write(fd, result.string(), result.size());
383    return NO_ERROR;
384}
385
386status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
387{
388    const size_t SIZE = 256;
389    char buffer[SIZE];
390    String8 result;
391
392    result.append(" AudioOutput\n");
393    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
394            mStreamType, mLeftVolume, mRightVolume);
395    result.append(buffer);
396    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
397            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
398    result.append(buffer);
399    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
400            mAuxEffectId, mSendLevel);
401    result.append(buffer);
402
403    ::write(fd, result.string(), result.size());
404    if (mTrack != 0) {
405        mTrack->dump(fd, args);
406    }
407    return NO_ERROR;
408}
409
410status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
411{
412    const size_t SIZE = 256;
413    char buffer[SIZE];
414    String8 result;
415    result.append(" Client\n");
416    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
417            mPid, mConnId, mStatus, mLoop?"true": "false");
418    result.append(buffer);
419    write(fd, result.string(), result.size());
420    if (mPlayer != NULL) {
421        mPlayer->dump(fd, args);
422    }
423    if (mAudioOutput != 0) {
424        mAudioOutput->dump(fd, args);
425    }
426    write(fd, "\n", 1);
427    return NO_ERROR;
428}
429
430status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
431{
432    const size_t SIZE = 256;
433    char buffer[SIZE];
434    String8 result;
435    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
436        snprintf(buffer, SIZE, "Permission Denial: "
437                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
438                IPCThreadState::self()->getCallingPid(),
439                IPCThreadState::self()->getCallingUid());
440        result.append(buffer);
441    } else {
442        Mutex::Autolock lock(mLock);
443        for (int i = 0, n = mClients.size(); i < n; ++i) {
444            sp<Client> c = mClients[i].promote();
445            if (c != 0) c->dump(fd, args);
446        }
447        if (mMediaRecorderClients.size() == 0) {
448                result.append(" No media recorder client\n\n");
449        } else {
450            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
451                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
452                if (c != 0) {
453                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
454                    result.append(buffer);
455                    write(fd, result.string(), result.size());
456                    result = "\n";
457                    c->dump(fd, args);
458                }
459            }
460        }
461
462        result.append(" Files opened and/or mapped:\n");
463        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
464        FILE *f = fopen(buffer, "r");
465        if (f) {
466            while (!feof(f)) {
467                fgets(buffer, SIZE, f);
468                if (strstr(buffer, " /storage/") ||
469                    strstr(buffer, " /system/sounds/") ||
470                    strstr(buffer, " /data/") ||
471                    strstr(buffer, " /system/media/")) {
472                    result.append("  ");
473                    result.append(buffer);
474                }
475            }
476            fclose(f);
477        } else {
478            result.append("couldn't open ");
479            result.append(buffer);
480            result.append("\n");
481        }
482
483        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
484        DIR *d = opendir(buffer);
485        if (d) {
486            struct dirent *ent;
487            while((ent = readdir(d)) != NULL) {
488                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
489                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
490                    struct stat s;
491                    if (lstat(buffer, &s) == 0) {
492                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
493                            char linkto[256];
494                            int len = readlink(buffer, linkto, sizeof(linkto));
495                            if(len > 0) {
496                                if(len > 255) {
497                                    linkto[252] = '.';
498                                    linkto[253] = '.';
499                                    linkto[254] = '.';
500                                    linkto[255] = 0;
501                                } else {
502                                    linkto[len] = 0;
503                                }
504                                if (strstr(linkto, "/storage/") == linkto ||
505                                    strstr(linkto, "/system/sounds/") == linkto ||
506                                    strstr(linkto, "/data/") == linkto ||
507                                    strstr(linkto, "/system/media/") == linkto) {
508                                    result.append("  ");
509                                    result.append(buffer);
510                                    result.append(" -> ");
511                                    result.append(linkto);
512                                    result.append("\n");
513                                }
514                            }
515                        } else {
516                            result.append("  unexpected type for ");
517                            result.append(buffer);
518                            result.append("\n");
519                        }
520                    }
521                }
522            }
523            closedir(d);
524        } else {
525            result.append("couldn't open ");
526            result.append(buffer);
527            result.append("\n");
528        }
529
530        bool dumpMem = false;
531        for (size_t i = 0; i < args.size(); i++) {
532            if (args[i] == String16("-m")) {
533                dumpMem = true;
534            }
535        }
536        if (dumpMem) {
537            dumpMemoryAddresses(fd);
538        }
539    }
540    write(fd, result.string(), result.size());
541    return NO_ERROR;
542}
543
544void MediaPlayerService::removeClient(wp<Client> client)
545{
546    Mutex::Autolock lock(mLock);
547    mClients.remove(client);
548}
549
550MediaPlayerService::Client::Client(
551        const sp<MediaPlayerService>& service, pid_t pid,
552        int32_t connId, const sp<IMediaPlayerClient>& client,
553        int audioSessionId, uid_t uid)
554{
555    ALOGV("Client(%d) constructor", connId);
556    mPid = pid;
557    mConnId = connId;
558    mService = service;
559    mClient = client;
560    mLoop = false;
561    mStatus = NO_INIT;
562    mAudioSessionId = audioSessionId;
563    mUID = uid;
564    mRetransmitEndpointValid = false;
565    mAudioAttributes = NULL;
566
567#if CALLBACK_ANTAGONIZER
568    ALOGD("create Antagonizer");
569    mAntagonizer = new Antagonizer(notify, this);
570#endif
571}
572
573MediaPlayerService::Client::~Client()
574{
575    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
576    mAudioOutput.clear();
577    wp<Client> client(this);
578    disconnect();
579    mService->removeClient(client);
580    if (mAudioAttributes != NULL) {
581        free(mAudioAttributes);
582    }
583}
584
585void MediaPlayerService::Client::disconnect()
586{
587    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
588    // grab local reference and clear main reference to prevent future
589    // access to object
590    sp<MediaPlayerBase> p;
591    {
592        Mutex::Autolock l(mLock);
593        p = mPlayer;
594        mClient.clear();
595    }
596
597    mPlayer.clear();
598
599    // clear the notification to prevent callbacks to dead client
600    // and reset the player. We assume the player will serialize
601    // access to itself if necessary.
602    if (p != 0) {
603        p->setNotifyCallback(0, 0);
604#if CALLBACK_ANTAGONIZER
605        ALOGD("kill Antagonizer");
606        mAntagonizer->kill();
607#endif
608        p->reset();
609    }
610
611    disconnectNativeWindow();
612
613    IPCThreadState::self()->flushCommands();
614}
615
616sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
617{
618    // determine if we have the right player type
619    sp<MediaPlayerBase> p = mPlayer;
620    if ((p != NULL) && (p->playerType() != playerType)) {
621        ALOGV("delete player");
622        p.clear();
623    }
624    if (p == NULL) {
625        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
626    }
627
628    if (p != NULL) {
629        p->setUID(mUID);
630    }
631
632    return p;
633}
634
635sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
636        player_type playerType)
637{
638    ALOGV("player type = %d", playerType);
639
640    // create the right type of player
641    sp<MediaPlayerBase> p = createPlayer(playerType);
642    if (p == NULL) {
643        return p;
644    }
645
646    if (!p->hardwareOutput()) {
647        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
648                mPid, mAudioAttributes);
649        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
650    }
651
652    return p;
653}
654
655void MediaPlayerService::Client::setDataSource_post(
656        const sp<MediaPlayerBase>& p,
657        status_t status)
658{
659    ALOGV(" setDataSource");
660    mStatus = status;
661    if (mStatus != OK) {
662        ALOGE("  error: %d", mStatus);
663        return;
664    }
665
666    // Set the re-transmission endpoint if one was chosen.
667    if (mRetransmitEndpointValid) {
668        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
669        if (mStatus != NO_ERROR) {
670            ALOGE("setRetransmitEndpoint error: %d", mStatus);
671        }
672    }
673
674    if (mStatus == OK) {
675        mPlayer = p;
676    }
677}
678
679status_t MediaPlayerService::Client::setDataSource(
680        const sp<IMediaHTTPService> &httpService,
681        const char *url,
682        const KeyedVector<String8, String8> *headers)
683{
684    ALOGV("setDataSource(%s)", url);
685    if (url == NULL)
686        return UNKNOWN_ERROR;
687
688    if ((strncmp(url, "http://", 7) == 0) ||
689        (strncmp(url, "https://", 8) == 0) ||
690        (strncmp(url, "rtsp://", 7) == 0)) {
691        if (!checkPermission("android.permission.INTERNET")) {
692            return PERMISSION_DENIED;
693        }
694    }
695
696    if (strncmp(url, "content://", 10) == 0) {
697        // get a filedescriptor for the content Uri and
698        // pass it to the setDataSource(fd) method
699
700        String16 url16(url);
701        int fd = android::openContentProviderFile(url16);
702        if (fd < 0)
703        {
704            ALOGE("Couldn't open fd for %s", url);
705            return UNKNOWN_ERROR;
706        }
707        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
708        close(fd);
709        return mStatus;
710    } else {
711        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
712        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
713        if (p == NULL) {
714            return NO_INIT;
715        }
716
717        setDataSource_post(p, p->setDataSource(httpService, url, headers));
718        return mStatus;
719    }
720}
721
722status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
723{
724    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
725    struct stat sb;
726    int ret = fstat(fd, &sb);
727    if (ret != 0) {
728        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
729        return UNKNOWN_ERROR;
730    }
731
732    ALOGV("st_dev  = %llu", sb.st_dev);
733    ALOGV("st_mode = %u", sb.st_mode);
734    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
735    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
736    ALOGV("st_size = %llu", sb.st_size);
737
738    if (offset >= sb.st_size) {
739        ALOGE("offset error");
740        ::close(fd);
741        return UNKNOWN_ERROR;
742    }
743    if (offset + length > sb.st_size) {
744        length = sb.st_size - offset;
745        ALOGV("calculated length = %lld", length);
746    }
747
748    player_type playerType = MediaPlayerFactory::getPlayerType(this,
749                                                               fd,
750                                                               offset,
751                                                               length);
752    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
753    if (p == NULL) {
754        return NO_INIT;
755    }
756
757    // now set data source
758    setDataSource_post(p, p->setDataSource(fd, offset, length));
759    return mStatus;
760}
761
762status_t MediaPlayerService::Client::setDataSource(
763        const sp<IStreamSource> &source) {
764    // create the right type of player
765    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
766    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
767    if (p == NULL) {
768        return NO_INIT;
769    }
770
771    // now set data source
772    setDataSource_post(p, p->setDataSource(source));
773    return mStatus;
774}
775
776void MediaPlayerService::Client::disconnectNativeWindow() {
777    if (mConnectedWindow != NULL) {
778        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
779                NATIVE_WINDOW_API_MEDIA);
780
781        if (err != OK) {
782            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
783                    strerror(-err), err);
784        }
785    }
786    mConnectedWindow.clear();
787}
788
789status_t MediaPlayerService::Client::setVideoSurfaceTexture(
790        const sp<IGraphicBufferProducer>& bufferProducer)
791{
792    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
793    sp<MediaPlayerBase> p = getPlayer();
794    if (p == 0) return UNKNOWN_ERROR;
795
796    sp<IBinder> binder(bufferProducer == NULL ? NULL :
797            bufferProducer->asBinder());
798    if (mConnectedWindowBinder == binder) {
799        return OK;
800    }
801
802    sp<ANativeWindow> anw;
803    if (bufferProducer != NULL) {
804        anw = new Surface(bufferProducer, true /* controlledByApp */);
805        status_t err = native_window_api_connect(anw.get(),
806                NATIVE_WINDOW_API_MEDIA);
807
808        if (err != OK) {
809            ALOGE("setVideoSurfaceTexture failed: %d", err);
810            // Note that we must do the reset before disconnecting from the ANW.
811            // Otherwise queue/dequeue calls could be made on the disconnected
812            // ANW, which may result in errors.
813            reset();
814
815            disconnectNativeWindow();
816
817            return err;
818        }
819    }
820
821    // Note that we must set the player's new GraphicBufferProducer before
822    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
823    // on the disconnected ANW, which may result in errors.
824    status_t err = p->setVideoSurfaceTexture(bufferProducer);
825
826    disconnectNativeWindow();
827
828    mConnectedWindow = anw;
829
830    if (err == OK) {
831        mConnectedWindowBinder = binder;
832    } else {
833        disconnectNativeWindow();
834    }
835
836    return err;
837}
838
839status_t MediaPlayerService::Client::invoke(const Parcel& request,
840                                            Parcel *reply)
841{
842    sp<MediaPlayerBase> p = getPlayer();
843    if (p == NULL) return UNKNOWN_ERROR;
844    return p->invoke(request, reply);
845}
846
847// This call doesn't need to access the native player.
848status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
849{
850    status_t status;
851    media::Metadata::Filter allow, drop;
852
853    if (unmarshallFilter(filter, &allow, &status) &&
854        unmarshallFilter(filter, &drop, &status)) {
855        Mutex::Autolock lock(mLock);
856
857        mMetadataAllow = allow;
858        mMetadataDrop = drop;
859    }
860    return status;
861}
862
863status_t MediaPlayerService::Client::getMetadata(
864        bool update_only, bool /*apply_filter*/, Parcel *reply)
865{
866    sp<MediaPlayerBase> player = getPlayer();
867    if (player == 0) return UNKNOWN_ERROR;
868
869    status_t status;
870    // Placeholder for the return code, updated by the caller.
871    reply->writeInt32(-1);
872
873    media::Metadata::Filter ids;
874
875    // We don't block notifications while we fetch the data. We clear
876    // mMetadataUpdated first so we don't lose notifications happening
877    // during the rest of this call.
878    {
879        Mutex::Autolock lock(mLock);
880        if (update_only) {
881            ids = mMetadataUpdated;
882        }
883        mMetadataUpdated.clear();
884    }
885
886    media::Metadata metadata(reply);
887
888    metadata.appendHeader();
889    status = player->getMetadata(ids, reply);
890
891    if (status != OK) {
892        metadata.resetParcel();
893        ALOGE("getMetadata failed %d", status);
894        return status;
895    }
896
897    // FIXME: Implement filtering on the result. Not critical since
898    // filtering takes place on the update notifications already. This
899    // would be when all the metadata are fetch and a filter is set.
900
901    // Everything is fine, update the metadata length.
902    metadata.updateLength();
903    return OK;
904}
905
906status_t MediaPlayerService::Client::prepareAsync()
907{
908    ALOGV("[%d] prepareAsync", mConnId);
909    sp<MediaPlayerBase> p = getPlayer();
910    if (p == 0) return UNKNOWN_ERROR;
911    status_t ret = p->prepareAsync();
912#if CALLBACK_ANTAGONIZER
913    ALOGD("start Antagonizer");
914    if (ret == NO_ERROR) mAntagonizer->start();
915#endif
916    return ret;
917}
918
919status_t MediaPlayerService::Client::start()
920{
921    ALOGV("[%d] start", mConnId);
922    sp<MediaPlayerBase> p = getPlayer();
923    if (p == 0) return UNKNOWN_ERROR;
924    p->setLooping(mLoop);
925    return p->start();
926}
927
928status_t MediaPlayerService::Client::stop()
929{
930    ALOGV("[%d] stop", mConnId);
931    sp<MediaPlayerBase> p = getPlayer();
932    if (p == 0) return UNKNOWN_ERROR;
933    return p->stop();
934}
935
936status_t MediaPlayerService::Client::pause()
937{
938    ALOGV("[%d] pause", mConnId);
939    sp<MediaPlayerBase> p = getPlayer();
940    if (p == 0) return UNKNOWN_ERROR;
941    return p->pause();
942}
943
944status_t MediaPlayerService::Client::isPlaying(bool* state)
945{
946    *state = false;
947    sp<MediaPlayerBase> p = getPlayer();
948    if (p == 0) return UNKNOWN_ERROR;
949    *state = p->isPlaying();
950    ALOGV("[%d] isPlaying: %d", mConnId, *state);
951    return NO_ERROR;
952}
953
954status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
955{
956    ALOGV("getCurrentPosition");
957    sp<MediaPlayerBase> p = getPlayer();
958    if (p == 0) return UNKNOWN_ERROR;
959    status_t ret = p->getCurrentPosition(msec);
960    if (ret == NO_ERROR) {
961        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
962    } else {
963        ALOGE("getCurrentPosition returned %d", ret);
964    }
965    return ret;
966}
967
968status_t MediaPlayerService::Client::getDuration(int *msec)
969{
970    ALOGV("getDuration");
971    sp<MediaPlayerBase> p = getPlayer();
972    if (p == 0) return UNKNOWN_ERROR;
973    status_t ret = p->getDuration(msec);
974    if (ret == NO_ERROR) {
975        ALOGV("[%d] getDuration = %d", mConnId, *msec);
976    } else {
977        ALOGE("getDuration returned %d", ret);
978    }
979    return ret;
980}
981
982status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
983    ALOGV("setNextPlayer");
984    Mutex::Autolock l(mLock);
985    sp<Client> c = static_cast<Client*>(player.get());
986    mNextClient = c;
987
988    if (c != NULL) {
989        if (mAudioOutput != NULL) {
990            mAudioOutput->setNextOutput(c->mAudioOutput);
991        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
992            ALOGE("no current audio output");
993        }
994
995        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
996            mPlayer->setNextPlayer(mNextClient->getPlayer());
997        }
998    }
999
1000    return OK;
1001}
1002
1003status_t MediaPlayerService::Client::seekTo(int msec)
1004{
1005    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1006    sp<MediaPlayerBase> p = getPlayer();
1007    if (p == 0) return UNKNOWN_ERROR;
1008    return p->seekTo(msec);
1009}
1010
1011status_t MediaPlayerService::Client::reset()
1012{
1013    ALOGV("[%d] reset", mConnId);
1014    mRetransmitEndpointValid = false;
1015    sp<MediaPlayerBase> p = getPlayer();
1016    if (p == 0) return UNKNOWN_ERROR;
1017    return p->reset();
1018}
1019
1020status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1021{
1022    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1023    // TODO: for hardware output, call player instead
1024    Mutex::Autolock l(mLock);
1025    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1026    return NO_ERROR;
1027}
1028
1029status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1030{
1031    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1032    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1033    unmarshallAudioAttributes(parcel, mAudioAttributes);
1034
1035    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1036            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1037            mAudioAttributes->tags);
1038
1039    if (mAudioOutput != 0) {
1040        mAudioOutput->setAudioAttributes(mAudioAttributes);
1041    }
1042    return NO_ERROR;
1043}
1044
1045status_t MediaPlayerService::Client::setLooping(int loop)
1046{
1047    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1048    mLoop = loop;
1049    sp<MediaPlayerBase> p = getPlayer();
1050    if (p != 0) return p->setLooping(loop);
1051    return NO_ERROR;
1052}
1053
1054status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1055{
1056    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1057
1058    // for hardware output, call player instead
1059    sp<MediaPlayerBase> p = getPlayer();
1060    {
1061      Mutex::Autolock l(mLock);
1062      if (p != 0 && p->hardwareOutput()) {
1063          MediaPlayerHWInterface* hwp =
1064                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1065          return hwp->setVolume(leftVolume, rightVolume);
1066      } else {
1067          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1068          return NO_ERROR;
1069      }
1070    }
1071
1072    return NO_ERROR;
1073}
1074
1075status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1076{
1077    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1078    Mutex::Autolock l(mLock);
1079    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1080    return NO_ERROR;
1081}
1082
1083status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1084{
1085    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1086    Mutex::Autolock l(mLock);
1087    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1088    return NO_ERROR;
1089}
1090
1091status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1092    ALOGV("[%d] setParameter(%d)", mConnId, key);
1093    switch (key) {
1094    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1095    {
1096        Mutex::Autolock l(mLock);
1097        return setAudioAttributes_l(request);
1098    }
1099    default:
1100        sp<MediaPlayerBase> p = getPlayer();
1101        if (p == 0) { return UNKNOWN_ERROR; }
1102        return p->setParameter(key, request);
1103    }
1104}
1105
1106status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1107    ALOGV("[%d] getParameter(%d)", mConnId, key);
1108    sp<MediaPlayerBase> p = getPlayer();
1109    if (p == 0) return UNKNOWN_ERROR;
1110    return p->getParameter(key, reply);
1111}
1112
1113status_t MediaPlayerService::Client::setRetransmitEndpoint(
1114        const struct sockaddr_in* endpoint) {
1115
1116    if (NULL != endpoint) {
1117        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1118        uint16_t p = ntohs(endpoint->sin_port);
1119        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1120                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1121    } else {
1122        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1123    }
1124
1125    sp<MediaPlayerBase> p = getPlayer();
1126
1127    // Right now, the only valid time to set a retransmit endpoint is before
1128    // player selection has been made (since the presence or absence of a
1129    // retransmit endpoint is going to determine which player is selected during
1130    // setDataSource).
1131    if (p != 0) return INVALID_OPERATION;
1132
1133    if (NULL != endpoint) {
1134        mRetransmitEndpoint = *endpoint;
1135        mRetransmitEndpointValid = true;
1136    } else {
1137        mRetransmitEndpointValid = false;
1138    }
1139
1140    return NO_ERROR;
1141}
1142
1143status_t MediaPlayerService::Client::getRetransmitEndpoint(
1144        struct sockaddr_in* endpoint)
1145{
1146    if (NULL == endpoint)
1147        return BAD_VALUE;
1148
1149    sp<MediaPlayerBase> p = getPlayer();
1150
1151    if (p != NULL)
1152        return p->getRetransmitEndpoint(endpoint);
1153
1154    if (!mRetransmitEndpointValid)
1155        return NO_INIT;
1156
1157    *endpoint = mRetransmitEndpoint;
1158
1159    return NO_ERROR;
1160}
1161
1162void MediaPlayerService::Client::notify(
1163        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1164{
1165    Client* client = static_cast<Client*>(cookie);
1166    if (client == NULL) {
1167        return;
1168    }
1169
1170    sp<IMediaPlayerClient> c;
1171    {
1172        Mutex::Autolock l(client->mLock);
1173        c = client->mClient;
1174        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1175            if (client->mAudioOutput != NULL)
1176                client->mAudioOutput->switchToNextOutput();
1177            client->mNextClient->start();
1178            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1179        }
1180    }
1181
1182    if (MEDIA_INFO == msg &&
1183        MEDIA_INFO_METADATA_UPDATE == ext1) {
1184        const media::Metadata::Type metadata_type = ext2;
1185
1186        if(client->shouldDropMetadata(metadata_type)) {
1187            return;
1188        }
1189
1190        // Update the list of metadata that have changed. getMetadata
1191        // also access mMetadataUpdated and clears it.
1192        client->addNewMetadataUpdate(metadata_type);
1193    }
1194
1195    if (c != NULL) {
1196        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1197        c->notify(msg, ext1, ext2, obj);
1198    }
1199}
1200
1201
1202bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1203{
1204    Mutex::Autolock lock(mLock);
1205
1206    if (findMetadata(mMetadataDrop, code)) {
1207        return true;
1208    }
1209
1210    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1211        return false;
1212    } else {
1213        return true;
1214    }
1215}
1216
1217
1218void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1219    Mutex::Autolock lock(mLock);
1220    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1221        mMetadataUpdated.add(metadata_type);
1222    }
1223}
1224
1225#if CALLBACK_ANTAGONIZER
1226const int Antagonizer::interval = 10000; // 10 msecs
1227
1228Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1229    mExit(false), mActive(false), mClient(client), mCb(cb)
1230{
1231    createThread(callbackThread, this);
1232}
1233
1234void Antagonizer::kill()
1235{
1236    Mutex::Autolock _l(mLock);
1237    mActive = false;
1238    mExit = true;
1239    mCondition.wait(mLock);
1240}
1241
1242int Antagonizer::callbackThread(void* user)
1243{
1244    ALOGD("Antagonizer started");
1245    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1246    while (!p->mExit) {
1247        if (p->mActive) {
1248            ALOGV("send event");
1249            p->mCb(p->mClient, 0, 0, 0);
1250        }
1251        usleep(interval);
1252    }
1253    Mutex::Autolock _l(p->mLock);
1254    p->mCondition.signal();
1255    ALOGD("Antagonizer stopped");
1256    return 0;
1257}
1258#endif
1259
1260status_t MediaPlayerService::decode(
1261        const sp<IMediaHTTPService> &httpService,
1262        const char* url,
1263        uint32_t *pSampleRate,
1264        int* pNumChannels,
1265        audio_format_t* pFormat,
1266        const sp<IMemoryHeap>& heap,
1267        size_t *pSize)
1268{
1269    ALOGV("decode(%s)", url);
1270    sp<MediaPlayerBase> player;
1271    status_t status = BAD_VALUE;
1272
1273    // Protect our precious, precious DRMd ringtones by only allowing
1274    // decoding of http, but not filesystem paths or content Uris.
1275    // If the application wants to decode those, it should open a
1276    // filedescriptor for them and use that.
1277    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1278        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1279        return BAD_VALUE;
1280    }
1281
1282    player_type playerType =
1283        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1284    ALOGV("player type = %d", playerType);
1285
1286    // create the right type of player
1287    sp<AudioCache> cache = new AudioCache(heap);
1288    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1289    if (player == NULL) goto Exit;
1290    if (player->hardwareOutput()) goto Exit;
1291
1292    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1293
1294    // set data source
1295    if (player->setDataSource(httpService, url) != NO_ERROR) goto Exit;
1296
1297    ALOGV("prepare");
1298    player->prepareAsync();
1299
1300    ALOGV("wait for prepare");
1301    if (cache->wait() != NO_ERROR) goto Exit;
1302
1303    ALOGV("start");
1304    player->start();
1305
1306    ALOGV("wait for playback complete");
1307    cache->wait();
1308    // in case of error, return what was successfully decoded.
1309    if (cache->size() == 0) {
1310        goto Exit;
1311    }
1312
1313    *pSize = cache->size();
1314    *pSampleRate = cache->sampleRate();
1315    *pNumChannels = cache->channelCount();
1316    *pFormat = cache->format();
1317    ALOGV("return size %d sampleRate=%u, channelCount = %d, format = %d",
1318          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1319    status = NO_ERROR;
1320
1321Exit:
1322    if (player != 0) player->reset();
1323    return status;
1324}
1325
1326status_t MediaPlayerService::decode(int fd, int64_t offset, int64_t length,
1327                                       uint32_t *pSampleRate, int* pNumChannels,
1328                                       audio_format_t* pFormat,
1329                                       const sp<IMemoryHeap>& heap, size_t *pSize)
1330{
1331    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1332    sp<MediaPlayerBase> player;
1333    status_t status = BAD_VALUE;
1334
1335    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1336                                                               fd,
1337                                                               offset,
1338                                                               length);
1339    ALOGV("player type = %d", playerType);
1340
1341    // create the right type of player
1342    sp<AudioCache> cache = new AudioCache(heap);
1343    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1344    if (player == NULL) goto Exit;
1345    if (player->hardwareOutput()) goto Exit;
1346
1347    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1348
1349    // set data source
1350    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1351
1352    ALOGV("prepare");
1353    player->prepareAsync();
1354
1355    ALOGV("wait for prepare");
1356    if (cache->wait() != NO_ERROR) goto Exit;
1357
1358    ALOGV("start");
1359    player->start();
1360
1361    ALOGV("wait for playback complete");
1362    cache->wait();
1363    // in case of error, return what was successfully decoded.
1364    if (cache->size() == 0) {
1365        goto Exit;
1366    }
1367
1368    *pSize = cache->size();
1369    *pSampleRate = cache->sampleRate();
1370    *pNumChannels = cache->channelCount();
1371    *pFormat = cache->format();
1372    ALOGV("return size %d, sampleRate=%u, channelCount = %d, format = %d",
1373          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1374    status = NO_ERROR;
1375
1376Exit:
1377    if (player != 0) player->reset();
1378    ::close(fd);
1379    return status;
1380}
1381
1382
1383#undef LOG_TAG
1384#define LOG_TAG "AudioSink"
1385MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1386        const audio_attributes_t* attr)
1387    : mCallback(NULL),
1388      mCallbackCookie(NULL),
1389      mCallbackData(NULL),
1390      mBytesWritten(0),
1391      mSessionId(sessionId),
1392      mUid(uid),
1393      mPid(pid),
1394      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1395    ALOGV("AudioOutput(%d)", sessionId);
1396    mStreamType = AUDIO_STREAM_MUSIC;
1397    mLeftVolume = 1.0;
1398    mRightVolume = 1.0;
1399    mPlaybackRatePermille = 1000;
1400    mSampleRateHz = 0;
1401    mMsecsPerFrame = 0;
1402    mAuxEffectId = 0;
1403    mSendLevel = 0.0;
1404    setMinBufferCount();
1405    mAttributes = attr;
1406}
1407
1408MediaPlayerService::AudioOutput::~AudioOutput()
1409{
1410    close();
1411    delete mCallbackData;
1412}
1413
1414void MediaPlayerService::AudioOutput::setMinBufferCount()
1415{
1416    char value[PROPERTY_VALUE_MAX];
1417    if (property_get("ro.kernel.qemu", value, 0)) {
1418        mIsOnEmulator = true;
1419        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1420    }
1421}
1422
1423bool MediaPlayerService::AudioOutput::isOnEmulator()
1424{
1425    setMinBufferCount();
1426    return mIsOnEmulator;
1427}
1428
1429int MediaPlayerService::AudioOutput::getMinBufferCount()
1430{
1431    setMinBufferCount();
1432    return mMinBufferCount;
1433}
1434
1435ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1436{
1437    if (mTrack == 0) return NO_INIT;
1438    return mTrack->frameCount() * frameSize();
1439}
1440
1441ssize_t MediaPlayerService::AudioOutput::frameCount() const
1442{
1443    if (mTrack == 0) return NO_INIT;
1444    return mTrack->frameCount();
1445}
1446
1447ssize_t MediaPlayerService::AudioOutput::channelCount() const
1448{
1449    if (mTrack == 0) return NO_INIT;
1450    return mTrack->channelCount();
1451}
1452
1453ssize_t MediaPlayerService::AudioOutput::frameSize() const
1454{
1455    if (mTrack == 0) return NO_INIT;
1456    return mTrack->frameSize();
1457}
1458
1459uint32_t MediaPlayerService::AudioOutput::latency () const
1460{
1461    if (mTrack == 0) return 0;
1462    return mTrack->latency();
1463}
1464
1465float MediaPlayerService::AudioOutput::msecsPerFrame() const
1466{
1467    return mMsecsPerFrame;
1468}
1469
1470status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1471{
1472    if (mTrack == 0) return NO_INIT;
1473    return mTrack->getPosition(position);
1474}
1475
1476status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1477{
1478    if (mTrack == 0) return NO_INIT;
1479    *frameswritten = mBytesWritten / frameSize();
1480    return OK;
1481}
1482
1483status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1484{
1485    if (mTrack == 0) return NO_INIT;
1486    return mTrack->setParameters(keyValuePairs);
1487}
1488
1489String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1490{
1491    if (mTrack == 0) return String8::empty();
1492    return mTrack->getParameters(keys);
1493}
1494
1495void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1496    mAttributes = attributes;
1497}
1498
1499void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1500{
1501    ALOGV("deleteRecycledTrack");
1502
1503    if (mRecycledTrack != 0) {
1504
1505        if (mCallbackData != NULL) {
1506            mCallbackData->setOutput(NULL);
1507            mCallbackData->endTrackSwitch();
1508        }
1509
1510        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1511            mRecycledTrack->flush();
1512        }
1513        // An offloaded track isn't flushed because the STREAM_END is reported
1514        // slightly prematurely to allow time for the gapless track switch
1515        // but this means that if we decide not to recycle the track there
1516        // could be a small amount of residual data still playing. We leave
1517        // AudioFlinger to drain the track.
1518
1519        mRecycledTrack.clear();
1520        delete mCallbackData;
1521        mCallbackData = NULL;
1522        close();
1523    }
1524}
1525
1526status_t MediaPlayerService::AudioOutput::open(
1527        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1528        audio_format_t format, int bufferCount,
1529        AudioCallback cb, void *cookie,
1530        audio_output_flags_t flags,
1531        const audio_offload_info_t *offloadInfo)
1532{
1533    mCallback = cb;
1534    mCallbackCookie = cookie;
1535
1536    // Check argument "bufferCount" against the mininum buffer count
1537    if (bufferCount < mMinBufferCount) {
1538        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1539        bufferCount = mMinBufferCount;
1540
1541    }
1542    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1543                format, bufferCount, mSessionId, flags);
1544    uint32_t afSampleRate;
1545    size_t afFrameCount;
1546    size_t frameCount;
1547
1548    // offloading is only supported in callback mode for now.
1549    // offloadInfo must be present if offload flag is set
1550    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1551            ((cb == NULL) || (offloadInfo == NULL))) {
1552        return BAD_VALUE;
1553    }
1554
1555    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1556        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1557    } else {
1558        uint32_t afSampleRate;
1559        size_t afFrameCount;
1560
1561        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1562            return NO_INIT;
1563        }
1564        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1565            return NO_INIT;
1566        }
1567
1568        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1569    }
1570
1571    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1572        channelMask = audio_channel_out_mask_from_count(channelCount);
1573        if (0 == channelMask) {
1574            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1575            return NO_INIT;
1576        }
1577    }
1578
1579    // Check whether we can recycle the track
1580    bool reuse = false;
1581    bool bothOffloaded = false;
1582
1583    if (mRecycledTrack != 0) {
1584        // check whether we are switching between two offloaded tracks
1585        bothOffloaded = (flags & mRecycledTrack->getFlags()
1586                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1587
1588        // check if the existing track can be reused as-is, or if a new track needs to be created.
1589        reuse = true;
1590
1591        if ((mCallbackData == NULL && mCallback != NULL) ||
1592                (mCallbackData != NULL && mCallback == NULL)) {
1593            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1594            ALOGV("can't chain callback and write");
1595            reuse = false;
1596        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1597                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1598            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1599                  mRecycledTrack->getSampleRate(), sampleRate,
1600                  mRecycledTrack->channelCount(), channelCount);
1601            reuse = false;
1602        } else if (flags != mFlags) {
1603            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1604            reuse = false;
1605        } else if (mRecycledTrack->format() != format) {
1606            reuse = false;
1607        }
1608    } else {
1609        ALOGV("no track available to recycle");
1610    }
1611
1612    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1613
1614    // If we can't recycle and both tracks are offloaded
1615    // we must close the previous output before opening a new one
1616    if (bothOffloaded && !reuse) {
1617        ALOGV("both offloaded and not recycling");
1618        deleteRecycledTrack();
1619    }
1620
1621    sp<AudioTrack> t;
1622    CallbackData *newcbd = NULL;
1623
1624    // We don't attempt to create a new track if we are recycling an
1625    // offloaded track. But, if we are recycling a non-offloaded or we
1626    // are switching where one is offloaded and one isn't then we create
1627    // the new track in advance so that we can read additional stream info
1628
1629    if (!(reuse && bothOffloaded)) {
1630        ALOGV("creating new AudioTrack");
1631
1632        if (mCallback != NULL) {
1633            newcbd = new CallbackData(this);
1634            t = new AudioTrack(
1635                    mStreamType,
1636                    sampleRate,
1637                    format,
1638                    channelMask,
1639                    frameCount,
1640                    flags,
1641                    CallbackWrapper,
1642                    newcbd,
1643                    0,  // notification frames
1644                    mSessionId,
1645                    AudioTrack::TRANSFER_CALLBACK,
1646                    offloadInfo,
1647                    mUid,
1648                    mPid,
1649                    mAttributes);
1650        } else {
1651            t = new AudioTrack(
1652                    mStreamType,
1653                    sampleRate,
1654                    format,
1655                    channelMask,
1656                    frameCount,
1657                    flags,
1658                    NULL, // callback
1659                    NULL, // user data
1660                    0, // notification frames
1661                    mSessionId,
1662                    AudioTrack::TRANSFER_DEFAULT,
1663                    NULL, // offload info
1664                    mUid,
1665                    mPid,
1666                    mAttributes);
1667        }
1668
1669        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1670            ALOGE("Unable to create audio track");
1671            delete newcbd;
1672            return NO_INIT;
1673        } else {
1674            // successful AudioTrack initialization implies a legacy stream type was generated
1675            // from the audio attributes
1676            mStreamType = t->streamType();
1677        }
1678    }
1679
1680    if (reuse) {
1681        CHECK(mRecycledTrack != NULL);
1682
1683        if (!bothOffloaded) {
1684            if (mRecycledTrack->frameCount() != t->frameCount()) {
1685                ALOGV("framecount differs: %u/%u frames",
1686                      mRecycledTrack->frameCount(), t->frameCount());
1687                reuse = false;
1688            }
1689        }
1690
1691        if (reuse) {
1692            ALOGV("chaining to next output and recycling track");
1693            close();
1694            mTrack = mRecycledTrack;
1695            mRecycledTrack.clear();
1696            if (mCallbackData != NULL) {
1697                mCallbackData->setOutput(this);
1698            }
1699            delete newcbd;
1700            return OK;
1701        }
1702    }
1703
1704    // we're not going to reuse the track, unblock and flush it
1705    // this was done earlier if both tracks are offloaded
1706    if (!bothOffloaded) {
1707        deleteRecycledTrack();
1708    }
1709
1710    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1711
1712    mCallbackData = newcbd;
1713    ALOGV("setVolume");
1714    t->setVolume(mLeftVolume, mRightVolume);
1715
1716    mSampleRateHz = sampleRate;
1717    mFlags = flags;
1718    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1719    uint32_t pos;
1720    if (t->getPosition(&pos) == OK) {
1721        mBytesWritten = uint64_t(pos) * t->frameSize();
1722    }
1723    mTrack = t;
1724
1725    status_t res = NO_ERROR;
1726    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1727        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1728        if (res == NO_ERROR) {
1729            t->setAuxEffectSendLevel(mSendLevel);
1730            res = t->attachAuxEffect(mAuxEffectId);
1731        }
1732    }
1733    ALOGV("open() DONE status %d", res);
1734    return res;
1735}
1736
1737status_t MediaPlayerService::AudioOutput::start()
1738{
1739    ALOGV("start");
1740    if (mCallbackData != NULL) {
1741        mCallbackData->endTrackSwitch();
1742    }
1743    if (mTrack != 0) {
1744        mTrack->setVolume(mLeftVolume, mRightVolume);
1745        mTrack->setAuxEffectSendLevel(mSendLevel);
1746        return mTrack->start();
1747    }
1748    return NO_INIT;
1749}
1750
1751void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1752    mNextOutput = nextOutput;
1753}
1754
1755
1756void MediaPlayerService::AudioOutput::switchToNextOutput() {
1757    ALOGV("switchToNextOutput");
1758    if (mNextOutput != NULL) {
1759        if (mCallbackData != NULL) {
1760            mCallbackData->beginTrackSwitch();
1761        }
1762        delete mNextOutput->mCallbackData;
1763        mNextOutput->mCallbackData = mCallbackData;
1764        mCallbackData = NULL;
1765        mNextOutput->mRecycledTrack = mTrack;
1766        mTrack.clear();
1767        mNextOutput->mSampleRateHz = mSampleRateHz;
1768        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1769        mNextOutput->mBytesWritten = mBytesWritten;
1770        mNextOutput->mFlags = mFlags;
1771    }
1772}
1773
1774ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1775{
1776    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1777
1778    //ALOGV("write(%p, %u)", buffer, size);
1779    if (mTrack != 0) {
1780        ssize_t ret = mTrack->write(buffer, size);
1781        mBytesWritten += ret;
1782        return ret;
1783    }
1784    return NO_INIT;
1785}
1786
1787void MediaPlayerService::AudioOutput::stop()
1788{
1789    ALOGV("stop");
1790    if (mTrack != 0) mTrack->stop();
1791}
1792
1793void MediaPlayerService::AudioOutput::flush()
1794{
1795    ALOGV("flush");
1796    if (mTrack != 0) mTrack->flush();
1797}
1798
1799void MediaPlayerService::AudioOutput::pause()
1800{
1801    ALOGV("pause");
1802    if (mTrack != 0) mTrack->pause();
1803}
1804
1805void MediaPlayerService::AudioOutput::close()
1806{
1807    ALOGV("close");
1808    mTrack.clear();
1809}
1810
1811void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1812{
1813    ALOGV("setVolume(%f, %f)", left, right);
1814    mLeftVolume = left;
1815    mRightVolume = right;
1816    if (mTrack != 0) {
1817        mTrack->setVolume(left, right);
1818    }
1819}
1820
1821status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1822{
1823    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1824    status_t res = NO_ERROR;
1825    if (mTrack != 0) {
1826        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1827    } else {
1828        res = NO_INIT;
1829    }
1830    mPlaybackRatePermille = ratePermille;
1831    if (mSampleRateHz != 0) {
1832        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1833    }
1834    return res;
1835}
1836
1837status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1838{
1839    ALOGV("setAuxEffectSendLevel(%f)", level);
1840    mSendLevel = level;
1841    if (mTrack != 0) {
1842        return mTrack->setAuxEffectSendLevel(level);
1843    }
1844    return NO_ERROR;
1845}
1846
1847status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1848{
1849    ALOGV("attachAuxEffect(%d)", effectId);
1850    mAuxEffectId = effectId;
1851    if (mTrack != 0) {
1852        return mTrack->attachAuxEffect(effectId);
1853    }
1854    return NO_ERROR;
1855}
1856
1857// static
1858void MediaPlayerService::AudioOutput::CallbackWrapper(
1859        int event, void *cookie, void *info) {
1860    //ALOGV("callbackwrapper");
1861    CallbackData *data = (CallbackData*)cookie;
1862    data->lock();
1863    AudioOutput *me = data->getOutput();
1864    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1865    if (me == NULL) {
1866        // no output set, likely because the track was scheduled to be reused
1867        // by another player, but the format turned out to be incompatible.
1868        data->unlock();
1869        if (buffer != NULL) {
1870            buffer->size = 0;
1871        }
1872        return;
1873    }
1874
1875    switch(event) {
1876    case AudioTrack::EVENT_MORE_DATA: {
1877        size_t actualSize = (*me->mCallback)(
1878                me, buffer->raw, buffer->size, me->mCallbackCookie,
1879                CB_EVENT_FILL_BUFFER);
1880
1881        if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1882            // We've reached EOS but the audio track is not stopped yet,
1883            // keep playing silence.
1884
1885            memset(buffer->raw, 0, buffer->size);
1886            actualSize = buffer->size;
1887        }
1888
1889        buffer->size = actualSize;
1890        } break;
1891
1892
1893    case AudioTrack::EVENT_STREAM_END:
1894        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1895        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1896                me->mCallbackCookie, CB_EVENT_STREAM_END);
1897        break;
1898
1899    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1900        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1901        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1902                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1903        break;
1904
1905    default:
1906        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1907    }
1908
1909    data->unlock();
1910}
1911
1912int MediaPlayerService::AudioOutput::getSessionId() const
1913{
1914    return mSessionId;
1915}
1916
1917uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1918{
1919    if (mTrack == 0) return 0;
1920    return mTrack->getSampleRate();
1921}
1922
1923#undef LOG_TAG
1924#define LOG_TAG "AudioCache"
1925MediaPlayerService::AudioCache::AudioCache(const sp<IMemoryHeap>& heap) :
1926    mHeap(heap), mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1927    mError(NO_ERROR),  mCommandComplete(false)
1928{
1929}
1930
1931uint32_t MediaPlayerService::AudioCache::latency () const
1932{
1933    return 0;
1934}
1935
1936float MediaPlayerService::AudioCache::msecsPerFrame() const
1937{
1938    return mMsecsPerFrame;
1939}
1940
1941status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1942{
1943    if (position == 0) return BAD_VALUE;
1944    *position = mSize;
1945    return NO_ERROR;
1946}
1947
1948status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1949{
1950    if (written == 0) return BAD_VALUE;
1951    *written = mSize;
1952    return NO_ERROR;
1953}
1954
1955////////////////////////////////////////////////////////////////////////////////
1956
1957struct CallbackThread : public Thread {
1958    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1959                   MediaPlayerBase::AudioSink::AudioCallback cb,
1960                   void *cookie);
1961
1962protected:
1963    virtual ~CallbackThread();
1964
1965    virtual bool threadLoop();
1966
1967private:
1968    wp<MediaPlayerBase::AudioSink> mSink;
1969    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1970    void *mCookie;
1971    void *mBuffer;
1972    size_t mBufferSize;
1973
1974    CallbackThread(const CallbackThread &);
1975    CallbackThread &operator=(const CallbackThread &);
1976};
1977
1978CallbackThread::CallbackThread(
1979        const wp<MediaPlayerBase::AudioSink> &sink,
1980        MediaPlayerBase::AudioSink::AudioCallback cb,
1981        void *cookie)
1982    : mSink(sink),
1983      mCallback(cb),
1984      mCookie(cookie),
1985      mBuffer(NULL),
1986      mBufferSize(0) {
1987}
1988
1989CallbackThread::~CallbackThread() {
1990    if (mBuffer) {
1991        free(mBuffer);
1992        mBuffer = NULL;
1993    }
1994}
1995
1996bool CallbackThread::threadLoop() {
1997    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1998    if (sink == NULL) {
1999        return false;
2000    }
2001
2002    if (mBuffer == NULL) {
2003        mBufferSize = sink->bufferSize();
2004        mBuffer = malloc(mBufferSize);
2005    }
2006
2007    size_t actualSize =
2008        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2009                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2010
2011    if (actualSize > 0) {
2012        sink->write(mBuffer, actualSize);
2013    }
2014
2015    return true;
2016}
2017
2018////////////////////////////////////////////////////////////////////////////////
2019
2020status_t MediaPlayerService::AudioCache::open(
2021        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
2022        audio_format_t format, int bufferCount,
2023        AudioCallback cb, void *cookie, audio_output_flags_t /*flags*/,
2024        const audio_offload_info_t* /*offloadInfo*/)
2025{
2026    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
2027    if (mHeap->getHeapID() < 0) {
2028        return NO_INIT;
2029    }
2030
2031    mSampleRate = sampleRate;
2032    mChannelCount = (uint16_t)channelCount;
2033    mFormat = format;
2034    mMsecsPerFrame = 1.e3 / (float) sampleRate;
2035
2036    if (cb != NULL) {
2037        mCallbackThread = new CallbackThread(this, cb, cookie);
2038    }
2039    return NO_ERROR;
2040}
2041
2042status_t MediaPlayerService::AudioCache::start() {
2043    if (mCallbackThread != NULL) {
2044        mCallbackThread->run("AudioCache callback");
2045    }
2046    return NO_ERROR;
2047}
2048
2049void MediaPlayerService::AudioCache::stop() {
2050    if (mCallbackThread != NULL) {
2051        mCallbackThread->requestExitAndWait();
2052    }
2053}
2054
2055ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
2056{
2057    ALOGV("write(%p, %u)", buffer, size);
2058    if ((buffer == 0) || (size == 0)) return size;
2059
2060    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
2061    if (p == NULL) return NO_INIT;
2062    p += mSize;
2063    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
2064    if (mSize + size > mHeap->getSize()) {
2065        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
2066        size = mHeap->getSize() - mSize;
2067    }
2068    memcpy(p, buffer, size);
2069    mSize += size;
2070    return size;
2071}
2072
2073// call with lock held
2074status_t MediaPlayerService::AudioCache::wait()
2075{
2076    Mutex::Autolock lock(mLock);
2077    while (!mCommandComplete) {
2078        mSignal.wait(mLock);
2079    }
2080    mCommandComplete = false;
2081
2082    if (mError == NO_ERROR) {
2083        ALOGV("wait - success");
2084    } else {
2085        ALOGV("wait - error");
2086    }
2087    return mError;
2088}
2089
2090void MediaPlayerService::AudioCache::notify(
2091        void* cookie, int msg, int ext1, int ext2, const Parcel* /*obj*/)
2092{
2093    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
2094    AudioCache* p = static_cast<AudioCache*>(cookie);
2095
2096    // ignore buffering messages
2097    switch (msg)
2098    {
2099    case MEDIA_ERROR:
2100        ALOGE("Error %d, %d occurred", ext1, ext2);
2101        p->mError = ext1;
2102        break;
2103    case MEDIA_PREPARED:
2104        ALOGV("prepared");
2105        break;
2106    case MEDIA_PLAYBACK_COMPLETE:
2107        ALOGV("playback complete");
2108        break;
2109    default:
2110        ALOGV("ignored");
2111        return;
2112    }
2113
2114    // wake up thread
2115    Mutex::Autolock lock(p->mLock);
2116    p->mCommandComplete = true;
2117    p->mSignal.signal();
2118}
2119
2120int MediaPlayerService::AudioCache::getSessionId() const
2121{
2122    return 0;
2123}
2124
2125uint32_t MediaPlayerService::AudioCache::getSampleRate() const
2126{
2127    if (mMsecsPerFrame == 0) {
2128        return 0;
2129    }
2130    return (uint32_t)(1.e3 / mMsecsPerFrame);
2131}
2132
2133void MediaPlayerService::addBatteryData(uint32_t params)
2134{
2135    Mutex::Autolock lock(mLock);
2136
2137    int32_t time = systemTime() / 1000000L;
2138
2139    // change audio output devices. This notification comes from AudioFlinger
2140    if ((params & kBatteryDataSpeakerOn)
2141            || (params & kBatteryDataOtherAudioDeviceOn)) {
2142
2143        int deviceOn[NUM_AUDIO_DEVICES];
2144        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2145            deviceOn[i] = 0;
2146        }
2147
2148        if ((params & kBatteryDataSpeakerOn)
2149                && (params & kBatteryDataOtherAudioDeviceOn)) {
2150            deviceOn[SPEAKER_AND_OTHER] = 1;
2151        } else if (params & kBatteryDataSpeakerOn) {
2152            deviceOn[SPEAKER] = 1;
2153        } else {
2154            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2155        }
2156
2157        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2158            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2159
2160                if (mBatteryAudio.refCount > 0) { // if playing audio
2161                    if (!deviceOn[i]) {
2162                        mBatteryAudio.lastTime[i] += time;
2163                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2164                        mBatteryAudio.lastTime[i] = 0;
2165                    } else {
2166                        mBatteryAudio.lastTime[i] = 0 - time;
2167                    }
2168                }
2169
2170                mBatteryAudio.deviceOn[i] = deviceOn[i];
2171            }
2172        }
2173        return;
2174    }
2175
2176    // an sudio stream is started
2177    if (params & kBatteryDataAudioFlingerStart) {
2178        // record the start time only if currently no other audio
2179        // is being played
2180        if (mBatteryAudio.refCount == 0) {
2181            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2182                if (mBatteryAudio.deviceOn[i]) {
2183                    mBatteryAudio.lastTime[i] -= time;
2184                }
2185            }
2186        }
2187
2188        mBatteryAudio.refCount ++;
2189        return;
2190
2191    } else if (params & kBatteryDataAudioFlingerStop) {
2192        if (mBatteryAudio.refCount <= 0) {
2193            ALOGW("Battery track warning: refCount is <= 0");
2194            return;
2195        }
2196
2197        // record the stop time only if currently this is the only
2198        // audio being played
2199        if (mBatteryAudio.refCount == 1) {
2200            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2201                if (mBatteryAudio.deviceOn[i]) {
2202                    mBatteryAudio.lastTime[i] += time;
2203                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2204                    mBatteryAudio.lastTime[i] = 0;
2205                }
2206            }
2207        }
2208
2209        mBatteryAudio.refCount --;
2210        return;
2211    }
2212
2213    int uid = IPCThreadState::self()->getCallingUid();
2214    if (uid == AID_MEDIA) {
2215        return;
2216    }
2217    int index = mBatteryData.indexOfKey(uid);
2218
2219    if (index < 0) { // create a new entry for this UID
2220        BatteryUsageInfo info;
2221        info.audioTotalTime = 0;
2222        info.videoTotalTime = 0;
2223        info.audioLastTime = 0;
2224        info.videoLastTime = 0;
2225        info.refCount = 0;
2226
2227        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2228            ALOGE("Battery track error: no memory for new app");
2229            return;
2230        }
2231    }
2232
2233    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2234
2235    if (params & kBatteryDataCodecStarted) {
2236        if (params & kBatteryDataTrackAudio) {
2237            info.audioLastTime -= time;
2238            info.refCount ++;
2239        }
2240        if (params & kBatteryDataTrackVideo) {
2241            info.videoLastTime -= time;
2242            info.refCount ++;
2243        }
2244    } else {
2245        if (info.refCount == 0) {
2246            ALOGW("Battery track warning: refCount is already 0");
2247            return;
2248        } else if (info.refCount < 0) {
2249            ALOGE("Battery track error: refCount < 0");
2250            mBatteryData.removeItem(uid);
2251            return;
2252        }
2253
2254        if (params & kBatteryDataTrackAudio) {
2255            info.audioLastTime += time;
2256            info.refCount --;
2257        }
2258        if (params & kBatteryDataTrackVideo) {
2259            info.videoLastTime += time;
2260            info.refCount --;
2261        }
2262
2263        // no stream is being played by this UID
2264        if (info.refCount == 0) {
2265            info.audioTotalTime += info.audioLastTime;
2266            info.audioLastTime = 0;
2267            info.videoTotalTime += info.videoLastTime;
2268            info.videoLastTime = 0;
2269        }
2270    }
2271}
2272
2273status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2274    Mutex::Autolock lock(mLock);
2275
2276    // audio output devices usage
2277    int32_t time = systemTime() / 1000000L; //in ms
2278    int32_t totalTime;
2279
2280    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2281        totalTime = mBatteryAudio.totalTime[i];
2282
2283        if (mBatteryAudio.deviceOn[i]
2284            && (mBatteryAudio.lastTime[i] != 0)) {
2285                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2286                totalTime += tmpTime;
2287        }
2288
2289        reply->writeInt32(totalTime);
2290        // reset the total time
2291        mBatteryAudio.totalTime[i] = 0;
2292   }
2293
2294    // codec usage
2295    BatteryUsageInfo info;
2296    int size = mBatteryData.size();
2297
2298    reply->writeInt32(size);
2299    int i = 0;
2300
2301    while (i < size) {
2302        info = mBatteryData.valueAt(i);
2303
2304        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2305        reply->writeInt32(info.audioTotalTime);
2306        reply->writeInt32(info.videoTotalTime);
2307
2308        info.audioTotalTime = 0;
2309        info.videoTotalTime = 0;
2310
2311        // remove the UID entry where no stream is being played
2312        if (info.refCount <= 0) {
2313            mBatteryData.removeItemsAt(i);
2314            size --;
2315            i --;
2316        }
2317        i++;
2318    }
2319    return NO_ERROR;
2320}
2321} // namespace android
2322