MediaPlayerService.cpp revision d608a813a9d2cbc6e2a5ea81d78d4a9044090c4c 
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 <dirent.h>
27#include <unistd.h>
28
29#include <string.h>
30
31#include <cutils/atomic.h>
32#include <cutils/properties.h> // for property_get
33
34#include <utils/misc.h>
35
36#include <android_runtime/ActivityManager.h>
37
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/Vector.h>
45#include <cutils/properties.h>
46
47#include <media/MediaPlayerInterface.h>
48#include <media/mediarecorder.h>
49#include <media/MediaMetadataRetrieverInterface.h>
50#include <media/AudioTrack.h>
51
52#include <utils/SortedVector.h>
53
54#include "MediaRecorderClient.h"
55#include "MediaPlayerService.h"
56#include "MetadataRetrieverClient.h"
57
58#include "MidiFile.h"
59#include "VorbisPlayer.h"
60#include <media/PVPlayer.h>
61#include "TestPlayerStub.h"
62
63#if USE_STAGEFRIGHT
64#include "StagefrightPlayer.h"
65#endif
66
67#ifdef BUILD_WITH_STAGEFRIGHT
68#include <OMX.h>
69#else
70#include <media/IOMX.h>
71#endif
72
73
74
75/* desktop Linux needs a little help with gettid() */
76#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
77#define __KERNEL__
78# include <linux/unistd.h>
79#ifdef _syscall0
80_syscall0(pid_t,gettid)
81#else
82pid_t gettid() { return syscall(__NR_gettid);}
83#endif
84#undef __KERNEL__
85#endif
86
87namespace {
88using android::status_t;
89using android::OK;
90using android::BAD_VALUE;
91using android::NOT_ENOUGH_DATA;
92using android::MetadataType;
93using android::Parcel;
94using android::SortedVector;
95
96// Max number of entries in the filter.
97const int kMaxFilterSize = 64;  // I pulled that out of thin air.
98
99// Keep in sync with ANY in Metadata.java
100const int32_t kAny = 0;
101
102const int32_t kMetaMarker = 0x4d455441;  // 'M' 'E' 'T' 'A'
103
104
105// Unmarshall a filter from a Parcel.
106// Filter format in a parcel:
107//
108//  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
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       number of entries (n)                   |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112// |                       metadata type 1                         |
113// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
114// |                       metadata type 2                         |
115// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
116//  ....
117// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
118// |                       metadata type n                         |
119// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
120//
121// @param p Parcel that should start with a filter.
122// @param[out] filter On exit contains the list of metadata type to be
123//                    filtered.
124// @param[out] status On exit contains the status code to be returned.
125// @return true if the parcel starts with a valid filter.
126bool unmarshallFilter(const Parcel& p,
127                      SortedVector<MetadataType> *filter,
128                      status_t *status)
129{
130    int32_t val;
131    if (p.readInt32(&val) != OK)
132    {
133        LOGE("Failed to read filter's length");
134        *status = NOT_ENOUGH_DATA;
135        return false;
136    }
137
138    if( val > kMaxFilterSize || val < 0)
139    {
140        LOGE("Invalid filter len %d", val);
141        *status = BAD_VALUE;
142        return false;
143    }
144
145    const size_t num = val;
146
147    filter->clear();
148    filter->setCapacity(num);
149
150    size_t size = num * sizeof(MetadataType);
151
152
153    if (p.dataAvail() < size)
154    {
155        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
156        *status = NOT_ENOUGH_DATA;
157        return false;
158    }
159
160    const MetadataType *data = static_cast<const MetadataType*>(p.readInplace(size));
161
162    if (NULL == data)
163    {
164        LOGE("Filter had no data");
165        *status = BAD_VALUE;
166        return false;
167    }
168
169    // TODO: The stl impl of vector would be more efficient here
170    // because it degenerates into a memcpy on pod types. Try to
171    // replace later or use stl::set.
172    for (size_t i = 0; i < num; ++i)
173    {
174        filter->add(*data);
175        ++data;
176    }
177    *status = OK;
178    return true;
179}
180
181// @param filter Of metadata type.
182// @param val To be searched.
183// @return true if a match was found.
184bool findMetadata(const SortedVector<MetadataType>& filter, const int32_t val)
185{
186    // Deal with empty and ANY right away
187    if (filter.isEmpty()) return false;
188    if (filter[0] == kAny) return true;
189
190    return filter.indexOf(val) >= 0;
191}
192
193}  // anonymous namespace
194
195
196namespace android {
197
198// TODO: Temp hack until we can register players
199typedef struct {
200    const char *extension;
201    const player_type playertype;
202} extmap;
203extmap FILE_EXTS [] =  {
204#if USE_STAGEFRIGHT
205        {".mp4", STAGEFRIGHT_PLAYER},
206        {".3gp", STAGEFRIGHT_PLAYER},
207#endif
208        {".mid", SONIVOX_PLAYER},
209        {".midi", SONIVOX_PLAYER},
210        {".smf", SONIVOX_PLAYER},
211        {".xmf", SONIVOX_PLAYER},
212        {".imy", SONIVOX_PLAYER},
213        {".rtttl", SONIVOX_PLAYER},
214        {".rtx", SONIVOX_PLAYER},
215        {".ota", SONIVOX_PLAYER},
216        {".ogg", VORBIS_PLAYER},
217        {".oga", VORBIS_PLAYER},
218};
219
220// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
221/* static */ const uint32_t MediaPlayerService::AudioOutput::kAudioVideoDelayMs = 96;
222/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
223/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
224
225void MediaPlayerService::instantiate() {
226    defaultServiceManager()->addService(
227            String16("media.player"), new MediaPlayerService());
228}
229
230MediaPlayerService::MediaPlayerService()
231{
232    LOGV("MediaPlayerService created");
233    mNextConnId = 1;
234}
235
236MediaPlayerService::~MediaPlayerService()
237{
238    LOGV("MediaPlayerService destroyed");
239}
240
241sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
242{
243#ifndef NO_OPENCORE
244    sp<MediaRecorderClient> recorder = new MediaRecorderClient(pid);
245#else
246    sp<MediaRecorderClient> recorder = NULL;
247#endif
248    LOGV("Create new media recorder client from pid %d", pid);
249    return recorder;
250}
251
252sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
253{
254    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
255    LOGV("Create new media retriever from pid %d", pid);
256    return retriever;
257}
258
259sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url)
260{
261    int32_t connId = android_atomic_inc(&mNextConnId);
262    sp<Client> c = new Client(this, pid, connId, client);
263    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
264    if (NO_ERROR != c->setDataSource(url))
265    {
266        c.clear();
267        return c;
268    }
269    wp<Client> w = c;
270    Mutex::Autolock lock(mLock);
271    mClients.add(w);
272    return c;
273}
274
275sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
276        int fd, int64_t offset, int64_t length)
277{
278    int32_t connId = android_atomic_inc(&mNextConnId);
279    sp<Client> c = new Client(this, pid, connId, client);
280    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
281            connId, pid, fd, offset, length);
282    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
283        c.clear();
284    } else {
285        wp<Client> w = c;
286        Mutex::Autolock lock(mLock);
287        mClients.add(w);
288    }
289    ::close(fd);
290    return c;
291}
292
293sp<IOMX> MediaPlayerService::createOMX() {
294#ifdef BUILD_WITH_STAGEFRIGHT
295    return new OMX;
296#else
297    return NULL;
298#endif
299}
300
301status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
302{
303    const size_t SIZE = 256;
304    char buffer[SIZE];
305    String8 result;
306
307    result.append(" AudioCache\n");
308    if (mHeap != 0) {
309        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
310                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
311        result.append(buffer);
312    }
313    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
314            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
315    result.append(buffer);
316    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
317            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
318    result.append(buffer);
319    ::write(fd, result.string(), result.size());
320    return NO_ERROR;
321}
322
323status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
324{
325    const size_t SIZE = 256;
326    char buffer[SIZE];
327    String8 result;
328
329    result.append(" AudioOutput\n");
330    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
331            mStreamType, mLeftVolume, mRightVolume);
332    result.append(buffer);
333    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
334            mMsecsPerFrame, mLatency);
335    result.append(buffer);
336    ::write(fd, result.string(), result.size());
337    if (mTrack != 0) {
338        mTrack->dump(fd, args);
339    }
340    return NO_ERROR;
341}
342
343status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
344{
345    const size_t SIZE = 256;
346    char buffer[SIZE];
347    String8 result;
348    result.append(" Client\n");
349    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
350            mPid, mConnId, mStatus, mLoop?"true": "false");
351    result.append(buffer);
352    write(fd, result.string(), result.size());
353    if (mAudioOutput != 0) {
354        mAudioOutput->dump(fd, args);
355    }
356    write(fd, "\n", 1);
357    return NO_ERROR;
358}
359
360static int myTid() {
361#ifdef HAVE_GETTID
362    return gettid();
363#else
364    return getpid();
365#endif
366}
367
368#if defined(__arm__)
369extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
370        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
371extern "C" void free_malloc_leak_info(uint8_t* info);
372
373void memStatus(int fd, const Vector<String16>& args)
374{
375    const size_t SIZE = 256;
376    char buffer[SIZE];
377    String8 result;
378
379    typedef struct {
380        size_t size;
381        size_t dups;
382        intptr_t * backtrace;
383    } AllocEntry;
384
385    uint8_t *info = NULL;
386    size_t overallSize = 0;
387    size_t infoSize = 0;
388    size_t totalMemory = 0;
389    size_t backtraceSize = 0;
390
391    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
392    if (info) {
393        uint8_t *ptr = info;
394        size_t count = overallSize / infoSize;
395
396        snprintf(buffer, SIZE, " Allocation count %i\n", count);
397        result.append(buffer);
398
399        AllocEntry * entries = new AllocEntry[count];
400
401        for (size_t i = 0; i < count; i++) {
402            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
403            AllocEntry *e = &entries[i];
404
405            e->size = *reinterpret_cast<size_t *>(ptr);
406            ptr += sizeof(size_t);
407
408            e->dups = *reinterpret_cast<size_t *>(ptr);
409            ptr += sizeof(size_t);
410
411            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
412            ptr += sizeof(intptr_t) * backtraceSize;
413        }
414
415        // Now we need to sort the entries.  They come sorted by size but
416        // not by stack trace which causes problems using diff.
417        bool moved;
418        do {
419            moved = false;
420            for (size_t i = 0; i < (count - 1); i++) {
421                AllocEntry *e1 = &entries[i];
422                AllocEntry *e2 = &entries[i+1];
423
424                bool swap = e1->size < e2->size;
425                if (e1->size == e2->size) {
426                    for(size_t j = 0; j < backtraceSize; j++) {
427                        if (e1->backtrace[j] == e2->backtrace[j]) {
428                            continue;
429                        }
430                        swap = e1->backtrace[j] < e2->backtrace[j];
431                        break;
432                    }
433                }
434                if (swap) {
435                    AllocEntry t = entries[i];
436                    entries[i] = entries[i+1];
437                    entries[i+1] = t;
438                    moved = true;
439                }
440            }
441        } while (moved);
442
443        for (size_t i = 0; i < count; i++) {
444            AllocEntry *e = &entries[i];
445
446            snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups);
447            result.append(buffer);
448            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
449                if (ct) {
450                    result.append(", ");
451                }
452                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
453                result.append(buffer);
454            }
455            result.append("\n");
456        }
457
458        delete[] entries;
459        free_malloc_leak_info(info);
460    }
461
462    write(fd, result.string(), result.size());
463}
464#endif
465
466status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
467{
468    const size_t SIZE = 256;
469    char buffer[SIZE];
470    String8 result;
471    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
472        snprintf(buffer, SIZE, "Permission Denial: "
473                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
474                IPCThreadState::self()->getCallingPid(),
475                IPCThreadState::self()->getCallingUid());
476        result.append(buffer);
477    } else {
478        Mutex::Autolock lock(mLock);
479        for (int i = 0, n = mClients.size(); i < n; ++i) {
480            sp<Client> c = mClients[i].promote();
481            if (c != 0) c->dump(fd, args);
482        }
483        result.append(" Files opened and/or mapped:\n");
484        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
485        FILE *f = fopen(buffer, "r");
486        if (f) {
487            while (!feof(f)) {
488                fgets(buffer, SIZE, f);
489                if (strstr(buffer, " /sdcard/") ||
490                    strstr(buffer, " /system/sounds/") ||
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", myTid());
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", myTid(), 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, "/sdcard/") == linkto ||
525                                    strstr(linkto, "/system/sounds/") == linkto ||
526                                    strstr(linkto, "/system/media/") == linkto) {
527                                    result.append("  ");
528                                    result.append(buffer);
529                                    result.append(" -> ");
530                                    result.append(linkto);
531                                    result.append("\n");
532                                }
533                            }
534                        } else {
535                            result.append("  unexpected type for ");
536                            result.append(buffer);
537                            result.append("\n");
538                        }
539                    }
540                }
541            }
542            closedir(d);
543        } else {
544            result.append("couldn't open ");
545            result.append(buffer);
546            result.append("\n");
547        }
548
549#if defined(__arm__)
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            memStatus(fd, args);
558        }
559#endif
560    }
561    write(fd, result.string(), result.size());
562    return NO_ERROR;
563}
564
565void MediaPlayerService::removeClient(wp<Client> client)
566{
567    Mutex::Autolock lock(mLock);
568    mClients.remove(client);
569}
570
571MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
572        int32_t connId, const sp<IMediaPlayerClient>& client)
573{
574    LOGV("Client(%d) constructor", connId);
575    mPid = pid;
576    mConnId = connId;
577    mService = service;
578    mClient = client;
579    mLoop = false;
580    mStatus = NO_INIT;
581#if CALLBACK_ANTAGONIZER
582    LOGD("create Antagonizer");
583    mAntagonizer = new Antagonizer(notify, this);
584#endif
585}
586
587MediaPlayerService::Client::~Client()
588{
589    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
590    mAudioOutput.clear();
591    wp<Client> client(this);
592    disconnect();
593    mService->removeClient(client);
594}
595
596void MediaPlayerService::Client::disconnect()
597{
598    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
599    // grab local reference and clear main reference to prevent future
600    // access to object
601    sp<MediaPlayerBase> p;
602    {
603        Mutex::Autolock l(mLock);
604        p = mPlayer;
605    }
606    mClient.clear();
607
608    mPlayer.clear();
609
610    // clear the notification to prevent callbacks to dead client
611    // and reset the player. We assume the player will serialize
612    // access to itself if necessary.
613    if (p != 0) {
614        p->setNotifyCallback(0, 0);
615#if CALLBACK_ANTAGONIZER
616        LOGD("kill Antagonizer");
617        mAntagonizer->kill();
618#endif
619        p->reset();
620    }
621
622    IPCThreadState::self()->flushCommands();
623}
624
625static player_type getPlayerType(int fd, int64_t offset, int64_t length)
626{
627    char buf[20];
628    lseek(fd, offset, SEEK_SET);
629    read(fd, buf, sizeof(buf));
630    lseek(fd, offset, SEEK_SET);
631
632    long ident = *((long*)buf);
633
634    // Ogg vorbis?
635    if (ident == 0x5367674f) // 'OggS'
636        return VORBIS_PLAYER;
637
638    // Some kind of MIDI?
639    EAS_DATA_HANDLE easdata;
640    if (EAS_Init(&easdata) == EAS_SUCCESS) {
641        EAS_FILE locator;
642        locator.path = NULL;
643        locator.fd = fd;
644        locator.offset = offset;
645        locator.length = length;
646        EAS_HANDLE  eashandle;
647        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
648            EAS_CloseFile(easdata, eashandle);
649            EAS_Shutdown(easdata);
650            return SONIVOX_PLAYER;
651        }
652        EAS_Shutdown(easdata);
653    }
654
655#if USE_STAGEFRIGHT
656    return STAGEFRIGHT_PLAYER;
657#endif
658
659    // Fall through to PV
660    return PV_PLAYER;
661}
662
663static player_type getPlayerType(const char* url)
664{
665    if (TestPlayerStub::canBeUsed(url)) {
666        return TEST_PLAYER;
667    }
668
669    // use MidiFile for MIDI extensions
670    int lenURL = strlen(url);
671    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
672        int len = strlen(FILE_EXTS[i].extension);
673        int start = lenURL - len;
674        if (start > 0) {
675            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
676                return FILE_EXTS[i].playertype;
677            }
678        }
679    }
680
681#if USE_STAGEFRIGHT
682    return STAGEFRIGHT_PLAYER;
683#endif
684
685    // Fall through to PV
686    return PV_PLAYER;
687}
688
689static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
690        notify_callback_f notifyFunc)
691{
692    sp<MediaPlayerBase> p;
693    switch (playerType) {
694#ifndef NO_OPENCORE
695        case PV_PLAYER:
696            LOGV(" create PVPlayer");
697            p = new PVPlayer();
698            break;
699#endif
700        case SONIVOX_PLAYER:
701            LOGV(" create MidiFile");
702            p = new MidiFile();
703            break;
704        case VORBIS_PLAYER:
705            LOGV(" create VorbisPlayer");
706            p = new VorbisPlayer();
707            break;
708#if USE_STAGEFRIGHT
709        case STAGEFRIGHT_PLAYER:
710            LOGV(" create StagefrightPlayer");
711            p = new StagefrightPlayer;
712            break;
713#else
714        case STAGEFRIGHT_PLAYER:
715            LOG_ALWAYS_FATAL(
716                    "Should not be here, stagefright player not enabled.");
717            break;
718#endif
719        case TEST_PLAYER:
720            LOGV("Create Test Player stub");
721            p = new TestPlayerStub();
722            break;
723    }
724    if (p != NULL) {
725        if (p->initCheck() == NO_ERROR) {
726            p->setNotifyCallback(cookie, notifyFunc);
727        } else {
728            p.clear();
729        }
730    }
731    if (p == NULL) {
732        LOGE("Failed to create player object");
733    }
734    return p;
735}
736
737sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
738{
739    // determine if we have the right player type
740    sp<MediaPlayerBase> p = mPlayer;
741    if ((p != NULL) && (p->playerType() != playerType)) {
742        LOGV("delete player");
743        p.clear();
744    }
745    if (p == NULL) {
746        p = android::createPlayer(playerType, this, notify);
747    }
748    return p;
749}
750
751status_t MediaPlayerService::Client::setDataSource(const char *url)
752{
753    LOGV("setDataSource(%s)", url);
754    if (url == NULL)
755        return UNKNOWN_ERROR;
756
757    if (strncmp(url, "content://", 10) == 0) {
758        // get a filedescriptor for the content Uri and
759        // pass it to the setDataSource(fd) method
760
761        String16 url16(url);
762        int fd = android::openContentProviderFile(url16);
763        if (fd < 0)
764        {
765            LOGE("Couldn't open fd for %s", url);
766            return UNKNOWN_ERROR;
767        }
768        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
769        close(fd);
770        return mStatus;
771    } else {
772        player_type playerType = getPlayerType(url);
773        LOGV("player type = %d", playerType);
774
775        // create the right type of player
776        sp<MediaPlayerBase> p = createPlayer(playerType);
777        if (p == NULL) return NO_INIT;
778
779        if (!p->hardwareOutput()) {
780            mAudioOutput = new AudioOutput();
781            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
782        }
783
784        // now set data source
785        LOGV(" setDataSource");
786        mStatus = p->setDataSource(url);
787        if (mStatus == NO_ERROR) {
788            mPlayer = p;
789        } else {
790            LOGE("  error: %d", mStatus);
791        }
792        return mStatus;
793    }
794}
795
796status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
797{
798    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
799    struct stat sb;
800    int ret = fstat(fd, &sb);
801    if (ret != 0) {
802        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
803        return UNKNOWN_ERROR;
804    }
805
806    LOGV("st_dev  = %llu", sb.st_dev);
807    LOGV("st_mode = %u", sb.st_mode);
808    LOGV("st_uid  = %lu", sb.st_uid);
809    LOGV("st_gid  = %lu", sb.st_gid);
810    LOGV("st_size = %llu", sb.st_size);
811
812    if (offset >= sb.st_size) {
813        LOGE("offset error");
814        ::close(fd);
815        return UNKNOWN_ERROR;
816    }
817    if (offset + length > sb.st_size) {
818        length = sb.st_size - offset;
819        LOGV("calculated length = %lld", length);
820    }
821
822    player_type playerType = getPlayerType(fd, offset, length);
823    LOGV("player type = %d", playerType);
824
825    // create the right type of player
826    sp<MediaPlayerBase> p = createPlayer(playerType);
827    if (p == NULL) return NO_INIT;
828
829    if (!p->hardwareOutput()) {
830        mAudioOutput = new AudioOutput();
831        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
832    }
833
834    // now set data source
835    mStatus = p->setDataSource(fd, offset, length);
836    if (mStatus == NO_ERROR) mPlayer = p;
837    return mStatus;
838}
839
840status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
841{
842    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
843    sp<MediaPlayerBase> p = getPlayer();
844    if (p == 0) return UNKNOWN_ERROR;
845    return p->setVideoSurface(surface);
846}
847
848status_t MediaPlayerService::Client::invoke(const Parcel& request,
849                                            Parcel *reply)
850{
851    sp<MediaPlayerBase> p = getPlayer();
852    if (p == NULL) return UNKNOWN_ERROR;
853    return p->invoke(request, reply);
854}
855
856// This call doesn't need to access the native player.
857status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
858{
859    status_t status;
860    SortedVector<MetadataType> allow, drop;
861
862    if (unmarshallFilter(filter, &allow, &status) &&
863        unmarshallFilter(filter, &drop, &status)) {
864        Mutex::Autolock lock(mLock);
865
866        mMetadataAllow = allow;
867        mMetadataDrop = drop;
868    }
869    return status;
870}
871
872status_t MediaPlayerService::Client::getMetadata(
873        bool update_only, bool apply_filter, Parcel *reply)
874{
875    sp<MediaPlayerBase> p = getPlayer();
876    if (p == 0) return UNKNOWN_ERROR;
877
878    status_t status;
879    // Placeholder for the return code, updated by the caller.
880    reply->writeInt32(-1);
881
882    SortedVector<MetadataType> ids;
883
884    // We don't block notifications while we fetch the data. We clear
885    // mMetadataUpdated first so we don't lose notifications happening
886    // during the rest of this call.
887    {
888        Mutex::Autolock lock(mLock);
889        if (update_only) {
890            ids = mMetadataUpdated;
891        }
892        mMetadataUpdated.clear();
893    }
894
895    const size_t begin = reply->dataPosition();
896    reply->writeInt32(-1);  // Placeholder for the length of the metadata
897    reply->writeInt32(kMetaMarker);
898
899    status = p->getMetadata(ids, reply);
900
901    if (status != OK) {
902        reply->setDataPosition(begin);
903        LOGE("getMetadata failed %d", status);
904        return status;
905    }
906
907    // FIXME: Implement filtering on the result. Not critical since
908    // filtering takes place on the update notifications already. This
909    // would be when all the metadata are fetch and a filter is set.
910
911    const size_t end = reply->dataPosition();
912
913    // Everything is fine, update the metadata length.
914    reply->setDataPosition(begin);
915    reply->writeInt32(end - begin);
916    reply->setDataPosition(end);
917    return OK;
918}
919
920status_t MediaPlayerService::Client::prepareAsync()
921{
922    LOGV("[%d] prepareAsync", mConnId);
923    sp<MediaPlayerBase> p = getPlayer();
924    if (p == 0) return UNKNOWN_ERROR;
925    status_t ret = p->prepareAsync();
926#if CALLBACK_ANTAGONIZER
927    LOGD("start Antagonizer");
928    if (ret == NO_ERROR) mAntagonizer->start();
929#endif
930    return ret;
931}
932
933status_t MediaPlayerService::Client::start()
934{
935    LOGV("[%d] start", mConnId);
936    sp<MediaPlayerBase> p = getPlayer();
937    if (p == 0) return UNKNOWN_ERROR;
938    p->setLooping(mLoop);
939    return p->start();
940}
941
942status_t MediaPlayerService::Client::stop()
943{
944    LOGV("[%d] stop", mConnId);
945    sp<MediaPlayerBase> p = getPlayer();
946    if (p == 0) return UNKNOWN_ERROR;
947    return p->stop();
948}
949
950status_t MediaPlayerService::Client::pause()
951{
952    LOGV("[%d] pause", mConnId);
953    sp<MediaPlayerBase> p = getPlayer();
954    if (p == 0) return UNKNOWN_ERROR;
955    return p->pause();
956}
957
958status_t MediaPlayerService::Client::isPlaying(bool* state)
959{
960    *state = false;
961    sp<MediaPlayerBase> p = getPlayer();
962    if (p == 0) return UNKNOWN_ERROR;
963    *state = p->isPlaying();
964    LOGV("[%d] isPlaying: %d", mConnId, *state);
965    return NO_ERROR;
966}
967
968status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
969{
970    LOGV("getCurrentPosition");
971    sp<MediaPlayerBase> p = getPlayer();
972    if (p == 0) return UNKNOWN_ERROR;
973    status_t ret = p->getCurrentPosition(msec);
974    if (ret == NO_ERROR) {
975        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
976    } else {
977        LOGE("getCurrentPosition returned %d", ret);
978    }
979    return ret;
980}
981
982status_t MediaPlayerService::Client::getDuration(int *msec)
983{
984    LOGV("getDuration");
985    sp<MediaPlayerBase> p = getPlayer();
986    if (p == 0) return UNKNOWN_ERROR;
987    status_t ret = p->getDuration(msec);
988    if (ret == NO_ERROR) {
989        LOGV("[%d] getDuration = %d", mConnId, *msec);
990    } else {
991        LOGE("getDuration returned %d", ret);
992    }
993    return ret;
994}
995
996status_t MediaPlayerService::Client::seekTo(int msec)
997{
998    LOGV("[%d] seekTo(%d)", mConnId, msec);
999    sp<MediaPlayerBase> p = getPlayer();
1000    if (p == 0) return UNKNOWN_ERROR;
1001    return p->seekTo(msec);
1002}
1003
1004status_t MediaPlayerService::Client::reset()
1005{
1006    LOGV("[%d] reset", mConnId);
1007    sp<MediaPlayerBase> p = getPlayer();
1008    if (p == 0) return UNKNOWN_ERROR;
1009    return p->reset();
1010}
1011
1012status_t MediaPlayerService::Client::setAudioStreamType(int type)
1013{
1014    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1015    // TODO: for hardware output, call player instead
1016    Mutex::Autolock l(mLock);
1017    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1018    return NO_ERROR;
1019}
1020
1021status_t MediaPlayerService::Client::setLooping(int loop)
1022{
1023    LOGV("[%d] setLooping(%d)", mConnId, loop);
1024    mLoop = loop;
1025    sp<MediaPlayerBase> p = getPlayer();
1026    if (p != 0) return p->setLooping(loop);
1027    return NO_ERROR;
1028}
1029
1030status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1031{
1032    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1033    // TODO: for hardware output, call player instead
1034    Mutex::Autolock l(mLock);
1035    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1036    return NO_ERROR;
1037}
1038
1039
1040void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1041{
1042    Client* client = static_cast<Client*>(cookie);
1043
1044    if (MEDIA_INFO == msg &&
1045        MEDIA_INFO_METADATA_UPDATE == ext1) {
1046        const MetadataType metadata_type = ext2;
1047
1048        if(client->shouldDropMetadata(metadata_type)) {
1049            return;
1050        }
1051
1052        // Update the list of metadata that have changed. getMetadata
1053        // also access mMetadataUpdated and clears it.
1054        client->addNewMetadataUpdate(metadata_type);
1055    }
1056    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1057    client->mClient->notify(msg, ext1, ext2);
1058}
1059
1060
1061bool MediaPlayerService::Client::shouldDropMetadata(MetadataType code) const
1062{
1063    Mutex::Autolock lock(mLock);
1064
1065    if (findMetadata(mMetadataDrop, code)) {
1066        return true;
1067    }
1068
1069    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1070        return false;
1071    } else {
1072        return true;
1073    }
1074}
1075
1076
1077void MediaPlayerService::Client::addNewMetadataUpdate(MetadataType metadata_type) {
1078    Mutex::Autolock lock(mLock);
1079    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1080        mMetadataUpdated.add(metadata_type);
1081    }
1082}
1083
1084#if CALLBACK_ANTAGONIZER
1085const int Antagonizer::interval = 10000; // 10 msecs
1086
1087Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1088    mExit(false), mActive(false), mClient(client), mCb(cb)
1089{
1090    createThread(callbackThread, this);
1091}
1092
1093void Antagonizer::kill()
1094{
1095    Mutex::Autolock _l(mLock);
1096    mActive = false;
1097    mExit = true;
1098    mCondition.wait(mLock);
1099}
1100
1101int Antagonizer::callbackThread(void* user)
1102{
1103    LOGD("Antagonizer started");
1104    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1105    while (!p->mExit) {
1106        if (p->mActive) {
1107            LOGV("send event");
1108            p->mCb(p->mClient, 0, 0, 0);
1109        }
1110        usleep(interval);
1111    }
1112    Mutex::Autolock _l(p->mLock);
1113    p->mCondition.signal();
1114    LOGD("Antagonizer stopped");
1115    return 0;
1116}
1117#endif
1118
1119static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1120
1121sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1122{
1123    LOGV("decode(%s)", url);
1124    sp<MemoryBase> mem;
1125    sp<MediaPlayerBase> player;
1126
1127    // Protect our precious, precious DRMd ringtones by only allowing
1128    // decoding of http, but not filesystem paths or content Uris.
1129    // If the application wants to decode those, it should open a
1130    // filedescriptor for them and use that.
1131    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1132        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1133        return mem;
1134    }
1135
1136    player_type playerType = getPlayerType(url);
1137    LOGV("player type = %d", playerType);
1138
1139    // create the right type of player
1140    sp<AudioCache> cache = new AudioCache(url);
1141    player = android::createPlayer(playerType, cache.get(), cache->notify);
1142    if (player == NULL) goto Exit;
1143    if (player->hardwareOutput()) goto Exit;
1144
1145    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1146
1147    // set data source
1148    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1149
1150    LOGV("prepare");
1151    player->prepareAsync();
1152
1153    LOGV("wait for prepare");
1154    if (cache->wait() != NO_ERROR) goto Exit;
1155
1156    LOGV("start");
1157    player->start();
1158
1159    LOGV("wait for playback complete");
1160    if (cache->wait() != NO_ERROR) goto Exit;
1161
1162    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1163    *pSampleRate = cache->sampleRate();
1164    *pNumChannels = cache->channelCount();
1165    *pFormat = cache->format();
1166    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1167
1168Exit:
1169    if (player != 0) player->reset();
1170    return mem;
1171}
1172
1173sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1174{
1175    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1176    sp<MemoryBase> mem;
1177    sp<MediaPlayerBase> player;
1178
1179    player_type playerType = getPlayerType(fd, offset, length);
1180    LOGV("player type = %d", playerType);
1181
1182    // create the right type of player
1183    sp<AudioCache> cache = new AudioCache("decode_fd");
1184    player = android::createPlayer(playerType, cache.get(), cache->notify);
1185    if (player == NULL) goto Exit;
1186    if (player->hardwareOutput()) goto Exit;
1187
1188    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1189
1190    // set data source
1191    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1192
1193    LOGV("prepare");
1194    player->prepareAsync();
1195
1196    LOGV("wait for prepare");
1197    if (cache->wait() != NO_ERROR) goto Exit;
1198
1199    LOGV("start");
1200    player->start();
1201
1202    LOGV("wait for playback complete");
1203    if (cache->wait() != NO_ERROR) goto Exit;
1204
1205    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1206    *pSampleRate = cache->sampleRate();
1207    *pNumChannels = cache->channelCount();
1208    *pFormat = cache->format();
1209    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1210
1211Exit:
1212    if (player != 0) player->reset();
1213    ::close(fd);
1214    return mem;
1215}
1216
1217#undef LOG_TAG
1218#define LOG_TAG "AudioSink"
1219MediaPlayerService::AudioOutput::AudioOutput()
1220    : mCallback(NULL),
1221      mCallbackCookie(NULL) {
1222    mTrack = 0;
1223    mStreamType = AudioSystem::MUSIC;
1224    mLeftVolume = 1.0;
1225    mRightVolume = 1.0;
1226    mLatency = 0;
1227    mMsecsPerFrame = 0;
1228    setMinBufferCount();
1229}
1230
1231MediaPlayerService::AudioOutput::~AudioOutput()
1232{
1233    close();
1234}
1235
1236void MediaPlayerService::AudioOutput::setMinBufferCount()
1237{
1238    char value[PROPERTY_VALUE_MAX];
1239    if (property_get("ro.kernel.qemu", value, 0)) {
1240        mIsOnEmulator = true;
1241        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1242    }
1243}
1244
1245bool MediaPlayerService::AudioOutput::isOnEmulator()
1246{
1247    setMinBufferCount();
1248    return mIsOnEmulator;
1249}
1250
1251int MediaPlayerService::AudioOutput::getMinBufferCount()
1252{
1253    setMinBufferCount();
1254    return mMinBufferCount;
1255}
1256
1257ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1258{
1259    if (mTrack == 0) return NO_INIT;
1260    return mTrack->frameCount() * frameSize();
1261}
1262
1263ssize_t MediaPlayerService::AudioOutput::frameCount() const
1264{
1265    if (mTrack == 0) return NO_INIT;
1266    return mTrack->frameCount();
1267}
1268
1269ssize_t MediaPlayerService::AudioOutput::channelCount() const
1270{
1271    if (mTrack == 0) return NO_INIT;
1272    return mTrack->channelCount();
1273}
1274
1275ssize_t MediaPlayerService::AudioOutput::frameSize() const
1276{
1277    if (mTrack == 0) return NO_INIT;
1278    return mTrack->frameSize();
1279}
1280
1281uint32_t MediaPlayerService::AudioOutput::latency () const
1282{
1283    return mLatency;
1284}
1285
1286float MediaPlayerService::AudioOutput::msecsPerFrame() const
1287{
1288    return mMsecsPerFrame;
1289}
1290
1291status_t MediaPlayerService::AudioOutput::open(
1292        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1293        AudioCallback cb, void *cookie)
1294{
1295    mCallback = cb;
1296    mCallbackCookie = cookie;
1297
1298    // Check argument "bufferCount" against the mininum buffer count
1299    if (bufferCount < mMinBufferCount) {
1300        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1301        bufferCount = mMinBufferCount;
1302
1303    }
1304    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1305    if (mTrack) close();
1306    int afSampleRate;
1307    int afFrameCount;
1308    int frameCount;
1309
1310    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1311        return NO_INIT;
1312    }
1313    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1314        return NO_INIT;
1315    }
1316
1317    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1318
1319    AudioTrack *t;
1320    if (mCallback != NULL) {
1321        t = new AudioTrack(
1322                mStreamType, sampleRate, format, channelCount, frameCount,
1323                0 /* flags */, CallbackWrapper, this);
1324    } else {
1325        t = new AudioTrack(
1326                mStreamType, sampleRate, format, channelCount, frameCount);
1327    }
1328
1329    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1330        LOGE("Unable to create audio track");
1331        delete t;
1332        return NO_INIT;
1333    }
1334
1335    LOGV("setVolume");
1336    t->setVolume(mLeftVolume, mRightVolume);
1337    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1338    mLatency = t->latency() + kAudioVideoDelayMs;
1339    mTrack = t;
1340    return NO_ERROR;
1341}
1342
1343void MediaPlayerService::AudioOutput::start()
1344{
1345    LOGV("start");
1346    if (mTrack) {
1347        mTrack->setVolume(mLeftVolume, mRightVolume);
1348        mTrack->start();
1349    }
1350}
1351
1352ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1353{
1354    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1355
1356    //LOGV("write(%p, %u)", buffer, size);
1357    if (mTrack) return mTrack->write(buffer, size);
1358    return NO_INIT;
1359}
1360
1361void MediaPlayerService::AudioOutput::stop()
1362{
1363    LOGV("stop");
1364    if (mTrack) mTrack->stop();
1365}
1366
1367void MediaPlayerService::AudioOutput::flush()
1368{
1369    LOGV("flush");
1370    if (mTrack) mTrack->flush();
1371}
1372
1373void MediaPlayerService::AudioOutput::pause()
1374{
1375    LOGV("pause");
1376    if (mTrack) mTrack->pause();
1377}
1378
1379void MediaPlayerService::AudioOutput::close()
1380{
1381    LOGV("close");
1382    delete mTrack;
1383    mTrack = 0;
1384}
1385
1386void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1387{
1388    LOGV("setVolume(%f, %f)", left, right);
1389    mLeftVolume = left;
1390    mRightVolume = right;
1391    if (mTrack) {
1392        mTrack->setVolume(left, right);
1393    }
1394}
1395
1396// static
1397void MediaPlayerService::AudioOutput::CallbackWrapper(
1398        int event, void *cookie, void *info) {
1399    if (event != AudioTrack::EVENT_MORE_DATA) {
1400        return;
1401    }
1402
1403    AudioOutput *me = (AudioOutput *)cookie;
1404    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1405
1406    (*me->mCallback)(
1407            me, buffer->raw, buffer->size, me->mCallbackCookie);
1408}
1409
1410#undef LOG_TAG
1411#define LOG_TAG "AudioCache"
1412MediaPlayerService::AudioCache::AudioCache(const char* name) :
1413    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1414    mError(NO_ERROR), mCommandComplete(false)
1415{
1416    // create ashmem heap
1417    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1418}
1419
1420uint32_t MediaPlayerService::AudioCache::latency () const
1421{
1422    return 0;
1423}
1424
1425float MediaPlayerService::AudioCache::msecsPerFrame() const
1426{
1427    return mMsecsPerFrame;
1428}
1429
1430status_t MediaPlayerService::AudioCache::open(
1431        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1432        AudioCallback cb, void *cookie)
1433{
1434    if (cb != NULL) {
1435        return UNKNOWN_ERROR;  // TODO: implement this.
1436    }
1437
1438    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1439    if (mHeap->getHeapID() < 0) return NO_INIT;
1440    mSampleRate = sampleRate;
1441    mChannelCount = (uint16_t)channelCount;
1442    mFormat = (uint16_t)format;
1443    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1444    return NO_ERROR;
1445}
1446
1447ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1448{
1449    LOGV("write(%p, %u)", buffer, size);
1450    if ((buffer == 0) || (size == 0)) return size;
1451
1452    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1453    if (p == NULL) return NO_INIT;
1454    p += mSize;
1455    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1456    if (mSize + size > mHeap->getSize()) {
1457        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1458        size = mHeap->getSize() - mSize;
1459    }
1460    memcpy(p, buffer, size);
1461    mSize += size;
1462    return size;
1463}
1464
1465// call with lock held
1466status_t MediaPlayerService::AudioCache::wait()
1467{
1468    Mutex::Autolock lock(mLock);
1469    if (!mCommandComplete) {
1470        mSignal.wait(mLock);
1471    }
1472    mCommandComplete = false;
1473
1474    if (mError == NO_ERROR) {
1475        LOGV("wait - success");
1476    } else {
1477        LOGV("wait - error");
1478    }
1479    return mError;
1480}
1481
1482void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1483{
1484    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1485    AudioCache* p = static_cast<AudioCache*>(cookie);
1486
1487    // ignore buffering messages
1488    if (msg == MEDIA_BUFFERING_UPDATE) return;
1489
1490    // set error condition
1491    if (msg == MEDIA_ERROR) {
1492        LOGE("Error %d, %d occurred", ext1, ext2);
1493        p->mError = ext1;
1494    }
1495
1496    // wake up thread
1497    LOGV("wakeup thread");
1498    p->mCommandComplete = true;
1499    p->mSignal.signal();
1500}
1501
1502}; // namespace android
1503