MediaPlayerService.cpp revision 4829038419910aa6e75ce8992d45a223452d5c67 
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>
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
62/* desktop Linux needs a little help with gettid() */
63#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
64#define __KERNEL__
65# include <linux/unistd.h>
66#ifdef _syscall0
67_syscall0(pid_t,gettid)
68#else
69pid_t gettid() { return syscall(__NR_gettid);}
70#endif
71#undef __KERNEL__
72#endif
73
74namespace {
75using android::status_t;
76using android::OK;
77using android::BAD_VALUE;
78using android::NOT_ENOUGH_DATA;
79using android::MetadataType;
80using android::Parcel;
81using android::SortedVector;
82
83// Max number of entries in the filter.
84const int kMaxFilterSize = 64;  // I pulled that out of thin air.
85
86// Keep in sync with ANY in Metadata.java
87const int32_t kAny = 0;
88
89
90// Unmarshall a filter from a Parcel.
91// Filter format in a parcel:
92//
93//  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
94// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
95// |                       number of entries (n)                   |
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       metadata type 1                         |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 2                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101//  ....
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103// |                       metadata type n                         |
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105//
106// @param p Parcel that should start with a filter.
107// @param[out] filter On exit contains the list of metadata type to be
108//                    filtered.
109// @param[out] status On exit contains the status code to be returned.
110// @return true if the parcel starts with a valid filter.
111bool unmarshallFilter(const Parcel& p,
112                      SortedVector<MetadataType> *filter,
113                      status_t *status)
114{
115    int32_t val;
116    if (p.readInt32(&val) != OK)
117    {
118        LOGE("Failed to read filter's length");
119        *status = NOT_ENOUGH_DATA;
120        return false;
121    }
122
123    if( val > kMaxFilterSize || val < 0)
124    {
125        LOGE("Invalid filter len %d", val);
126        *status = BAD_VALUE;
127        return false;
128    }
129
130    const size_t num = val;
131
132    filter->clear();
133    filter->setCapacity(num);
134
135    size_t size = num * sizeof(MetadataType);
136
137
138    if (p.dataAvail() < size)
139    {
140        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
141        *status = NOT_ENOUGH_DATA;
142        return false;
143    }
144
145    const MetadataType *data = static_cast<const MetadataType*>(p.readInplace(size));
146
147    if (NULL == data)
148    {
149        LOGE("Filter had no data");
150        *status = BAD_VALUE;
151        return false;
152    }
153
154    // TODO: The stl impl of vector would be more efficient here
155    // because it degenerates into a memcpy on pod types. Try to
156    // replace later or use stl::set.
157    for (size_t i = 0; i < num; ++i)
158    {
159        filter->add(*data);
160        ++data;
161    }
162    *status = OK;
163    return true;
164}
165
166// @param filter Of metadata type.
167// @param val To be searched.
168// @return true if a match was found.
169bool findMetadata(const SortedVector<MetadataType>& filter, const int32_t val)
170{
171    // Deal with empty and ANY right away
172    if (filter.isEmpty()) return false;
173    if (filter[0] == kAny) return true;
174
175    return filter.indexOf(val) >= 0;
176}
177
178}  // anonymous namespace
179
180
181namespace android {
182
183// TODO: Temp hack until we can register players
184typedef struct {
185    const char *extension;
186    const player_type playertype;
187} extmap;
188extmap FILE_EXTS [] =  {
189        {".mid", SONIVOX_PLAYER},
190        {".midi", SONIVOX_PLAYER},
191        {".smf", SONIVOX_PLAYER},
192        {".xmf", SONIVOX_PLAYER},
193        {".imy", SONIVOX_PLAYER},
194        {".rtttl", SONIVOX_PLAYER},
195        {".rtx", SONIVOX_PLAYER},
196        {".ota", SONIVOX_PLAYER},
197        {".ogg", VORBIS_PLAYER},
198        {".oga", VORBIS_PLAYER},
199};
200
201// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
202/* static */ const uint32_t MediaPlayerService::AudioOutput::kAudioVideoDelayMs = 96;
203/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
204/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
205
206void MediaPlayerService::instantiate() {
207    defaultServiceManager()->addService(
208            String16("media.player"), new MediaPlayerService());
209}
210
211MediaPlayerService::MediaPlayerService()
212{
213    LOGV("MediaPlayerService created");
214    mNextConnId = 1;
215}
216
217MediaPlayerService::~MediaPlayerService()
218{
219    LOGV("MediaPlayerService destroyed");
220}
221
222sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
223{
224#ifndef NO_OPENCORE
225    sp<MediaRecorderClient> recorder = new MediaRecorderClient(pid);
226#else
227    sp<MediaRecorderClient> recorder = NULL;
228#endif
229    LOGV("Create new media recorder client from pid %d", pid);
230    return recorder;
231}
232
233sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
234{
235    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
236    LOGV("Create new media retriever from pid %d", pid);
237    return retriever;
238}
239
240sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url)
241{
242    int32_t connId = android_atomic_inc(&mNextConnId);
243    sp<Client> c = new Client(this, pid, connId, client);
244    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
245    if (NO_ERROR != c->setDataSource(url))
246    {
247        c.clear();
248        return c;
249    }
250    wp<Client> w = c;
251    Mutex::Autolock lock(mLock);
252    mClients.add(w);
253    return c;
254}
255
256sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
257        int fd, int64_t offset, int64_t length)
258{
259    int32_t connId = android_atomic_inc(&mNextConnId);
260    sp<Client> c = new Client(this, pid, connId, client);
261    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
262            connId, pid, fd, offset, length);
263    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
264        c.clear();
265    } else {
266        wp<Client> w = c;
267        Mutex::Autolock lock(mLock);
268        mClients.add(w);
269    }
270    ::close(fd);
271    return c;
272}
273
274status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
275{
276    const size_t SIZE = 256;
277    char buffer[SIZE];
278    String8 result;
279
280    result.append(" AudioCache\n");
281    if (mHeap != 0) {
282        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
283                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
284        result.append(buffer);
285    }
286    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
287            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
288    result.append(buffer);
289    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
290            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
291    result.append(buffer);
292    ::write(fd, result.string(), result.size());
293    return NO_ERROR;
294}
295
296status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
297{
298    const size_t SIZE = 256;
299    char buffer[SIZE];
300    String8 result;
301
302    result.append(" AudioOutput\n");
303    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
304            mStreamType, mLeftVolume, mRightVolume);
305    result.append(buffer);
306    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
307            mMsecsPerFrame, mLatency);
308    result.append(buffer);
309    ::write(fd, result.string(), result.size());
310    if (mTrack != 0) {
311        mTrack->dump(fd, args);
312    }
313    return NO_ERROR;
314}
315
316status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
317{
318    const size_t SIZE = 256;
319    char buffer[SIZE];
320    String8 result;
321    result.append(" Client\n");
322    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
323            mPid, mConnId, mStatus, mLoop?"true": "false");
324    result.append(buffer);
325    write(fd, result.string(), result.size());
326    if (mAudioOutput != 0) {
327        mAudioOutput->dump(fd, args);
328    }
329    write(fd, "\n", 1);
330    return NO_ERROR;
331}
332
333static int myTid() {
334#ifdef HAVE_GETTID
335    return gettid();
336#else
337    return getpid();
338#endif
339}
340
341#if defined(__arm__)
342extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
343        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
344extern "C" void free_malloc_leak_info(uint8_t* info);
345
346void memStatus(int fd, const Vector<String16>& args)
347{
348    const size_t SIZE = 256;
349    char buffer[SIZE];
350    String8 result;
351
352    typedef struct {
353        size_t size;
354        size_t dups;
355        intptr_t * backtrace;
356    } AllocEntry;
357
358    uint8_t *info = NULL;
359    size_t overallSize = 0;
360    size_t infoSize = 0;
361    size_t totalMemory = 0;
362    size_t backtraceSize = 0;
363
364    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
365    if (info) {
366        uint8_t *ptr = info;
367        size_t count = overallSize / infoSize;
368
369        snprintf(buffer, SIZE, " Allocation count %i\n", count);
370        result.append(buffer);
371
372        AllocEntry * entries = new AllocEntry[count];
373
374        for (size_t i = 0; i < count; i++) {
375            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
376            AllocEntry *e = &entries[i];
377
378            e->size = *reinterpret_cast<size_t *>(ptr);
379            ptr += sizeof(size_t);
380
381            e->dups = *reinterpret_cast<size_t *>(ptr);
382            ptr += sizeof(size_t);
383
384            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
385            ptr += sizeof(intptr_t) * backtraceSize;
386        }
387
388        // Now we need to sort the entries.  They come sorted by size but
389        // not by stack trace which causes problems using diff.
390        bool moved;
391        do {
392            moved = false;
393            for (size_t i = 0; i < (count - 1); i++) {
394                AllocEntry *e1 = &entries[i];
395                AllocEntry *e2 = &entries[i+1];
396
397                bool swap = e1->size < e2->size;
398                if (e1->size == e2->size) {
399                    for(size_t j = 0; j < backtraceSize; j++) {
400                        if (e1->backtrace[j] == e2->backtrace[j]) {
401                            continue;
402                        }
403                        swap = e1->backtrace[j] < e2->backtrace[j];
404                        break;
405                    }
406                }
407                if (swap) {
408                    AllocEntry t = entries[i];
409                    entries[i] = entries[i+1];
410                    entries[i+1] = t;
411                    moved = true;
412                }
413            }
414        } while (moved);
415
416        for (size_t i = 0; i < count; i++) {
417            AllocEntry *e = &entries[i];
418
419            snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups);
420            result.append(buffer);
421            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
422                if (ct) {
423                    result.append(", ");
424                }
425                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
426                result.append(buffer);
427            }
428            result.append("\n");
429        }
430
431        delete[] entries;
432        free_malloc_leak_info(info);
433    }
434
435    write(fd, result.string(), result.size());
436}
437#endif
438
439status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
440{
441    const size_t SIZE = 256;
442    char buffer[SIZE];
443    String8 result;
444    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
445        snprintf(buffer, SIZE, "Permission Denial: "
446                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
447                IPCThreadState::self()->getCallingPid(),
448                IPCThreadState::self()->getCallingUid());
449        result.append(buffer);
450    } else {
451        Mutex::Autolock lock(mLock);
452        for (int i = 0, n = mClients.size(); i < n; ++i) {
453            sp<Client> c = mClients[i].promote();
454            if (c != 0) c->dump(fd, args);
455        }
456        result.append(" Files opened and/or mapped:\n");
457        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
458        FILE *f = fopen(buffer, "r");
459        if (f) {
460            while (!feof(f)) {
461                fgets(buffer, SIZE, f);
462                if (strstr(buffer, " /sdcard/") ||
463                    strstr(buffer, " /system/sounds/") ||
464                    strstr(buffer, " /system/media/")) {
465                    result.append("  ");
466                    result.append(buffer);
467                }
468            }
469            fclose(f);
470        } else {
471            result.append("couldn't open ");
472            result.append(buffer);
473            result.append("\n");
474        }
475
476        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
477        DIR *d = opendir(buffer);
478        if (d) {
479            struct dirent *ent;
480            while((ent = readdir(d)) != NULL) {
481                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
482                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
483                    struct stat s;
484                    if (lstat(buffer, &s) == 0) {
485                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
486                            char linkto[256];
487                            int len = readlink(buffer, linkto, sizeof(linkto));
488                            if(len > 0) {
489                                if(len > 255) {
490                                    linkto[252] = '.';
491                                    linkto[253] = '.';
492                                    linkto[254] = '.';
493                                    linkto[255] = 0;
494                                } else {
495                                    linkto[len] = 0;
496                                }
497                                if (strstr(linkto, "/sdcard/") == linkto ||
498                                    strstr(linkto, "/system/sounds/") == linkto ||
499                                    strstr(linkto, "/system/media/") == linkto) {
500                                    result.append("  ");
501                                    result.append(buffer);
502                                    result.append(" -> ");
503                                    result.append(linkto);
504                                    result.append("\n");
505                                }
506                            }
507                        } else {
508                            result.append("  unexpected type for ");
509                            result.append(buffer);
510                            result.append("\n");
511                        }
512                    }
513                }
514            }
515            closedir(d);
516        } else {
517            result.append("couldn't open ");
518            result.append(buffer);
519            result.append("\n");
520        }
521
522#if defined(__arm__)
523        bool dumpMem = false;
524        for (size_t i = 0; i < args.size(); i++) {
525            if (args[i] == String16("-m")) {
526                dumpMem = true;
527            }
528        }
529        if (dumpMem) {
530            memStatus(fd, args);
531        }
532#endif
533    }
534    write(fd, result.string(), result.size());
535    return NO_ERROR;
536}
537
538void MediaPlayerService::removeClient(wp<Client> client)
539{
540    Mutex::Autolock lock(mLock);
541    mClients.remove(client);
542}
543
544MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
545        int32_t connId, const sp<IMediaPlayerClient>& client)
546{
547    LOGV("Client(%d) constructor", connId);
548    mPid = pid;
549    mConnId = connId;
550    mService = service;
551    mClient = client;
552    mLoop = false;
553    mStatus = NO_INIT;
554#if CALLBACK_ANTAGONIZER
555    LOGD("create Antagonizer");
556    mAntagonizer = new Antagonizer(notify, this);
557#endif
558}
559
560MediaPlayerService::Client::~Client()
561{
562    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
563    mAudioOutput.clear();
564    wp<Client> client(this);
565    disconnect();
566    mService->removeClient(client);
567}
568
569void MediaPlayerService::Client::disconnect()
570{
571    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
572    // grab local reference and clear main reference to prevent future
573    // access to object
574    sp<MediaPlayerBase> p;
575    {
576        Mutex::Autolock l(mLock);
577        p = mPlayer;
578    }
579    mClient.clear();
580    mPlayer.clear();
581
582    // clear the notification to prevent callbacks to dead client
583    // and reset the player. We assume the player will serialize
584    // access to itself if necessary.
585    if (p != 0) {
586        p->setNotifyCallback(0, 0);
587#if CALLBACK_ANTAGONIZER
588        LOGD("kill Antagonizer");
589        mAntagonizer->kill();
590#endif
591        p->reset();
592    }
593
594    IPCThreadState::self()->flushCommands();
595}
596
597static player_type getPlayerType(int fd, int64_t offset, int64_t length)
598{
599    char buf[20];
600    lseek(fd, offset, SEEK_SET);
601    read(fd, buf, sizeof(buf));
602    lseek(fd, offset, SEEK_SET);
603
604    long ident = *((long*)buf);
605
606    // Ogg vorbis?
607    if (ident == 0x5367674f) // 'OggS'
608        return VORBIS_PLAYER;
609
610    // Some kind of MIDI?
611    EAS_DATA_HANDLE easdata;
612    if (EAS_Init(&easdata) == EAS_SUCCESS) {
613        EAS_FILE locator;
614        locator.path = NULL;
615        locator.fd = fd;
616        locator.offset = offset;
617        locator.length = length;
618        EAS_HANDLE  eashandle;
619        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
620            EAS_CloseFile(easdata, eashandle);
621            EAS_Shutdown(easdata);
622            return SONIVOX_PLAYER;
623        }
624        EAS_Shutdown(easdata);
625    }
626
627    // Fall through to PV
628    return PV_PLAYER;
629}
630
631static player_type getPlayerType(const char* url)
632{
633
634    // use MidiFile for MIDI extensions
635    int lenURL = strlen(url);
636    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
637        int len = strlen(FILE_EXTS[i].extension);
638        int start = lenURL - len;
639        if (start > 0) {
640            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
641                return FILE_EXTS[i].playertype;
642            }
643        }
644    }
645
646    // Fall through to PV
647    return PV_PLAYER;
648}
649
650static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
651        notify_callback_f notifyFunc)
652{
653    sp<MediaPlayerBase> p;
654    switch (playerType) {
655#ifndef NO_OPENCORE
656        case PV_PLAYER:
657            LOGV(" create PVPlayer");
658            p = new PVPlayer();
659            break;
660#endif
661        case SONIVOX_PLAYER:
662            LOGV(" create MidiFile");
663            p = new MidiFile();
664            break;
665        case VORBIS_PLAYER:
666            LOGV(" create VorbisPlayer");
667            p = new VorbisPlayer();
668            break;
669    }
670    if (p != NULL) {
671        if (p->initCheck() == NO_ERROR) {
672            p->setNotifyCallback(cookie, notifyFunc);
673        } else {
674            p.clear();
675        }
676    }
677    if (p == NULL) {
678        LOGE("Failed to create player object");
679    }
680    return p;
681}
682
683sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
684{
685    // determine if we have the right player type
686    sp<MediaPlayerBase> p = mPlayer;
687    if ((p != NULL) && (p->playerType() != playerType)) {
688        LOGV("delete player");
689        p.clear();
690    }
691    if (p == NULL) {
692        p = android::createPlayer(playerType, this, notify);
693    }
694    return p;
695}
696
697status_t MediaPlayerService::Client::setDataSource(const char *url)
698{
699    LOGV("setDataSource(%s)", url);
700    if (url == NULL)
701        return UNKNOWN_ERROR;
702
703    if (strncmp(url, "content://", 10) == 0) {
704        // get a filedescriptor for the content Uri and
705        // pass it to the setDataSource(fd) method
706
707        String16 url16(url);
708        int fd = android::openContentProviderFile(url16);
709        if (fd < 0)
710        {
711            LOGE("Couldn't open fd for %s", url);
712            return UNKNOWN_ERROR;
713        }
714        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
715        close(fd);
716        return mStatus;
717    } else {
718        player_type playerType = getPlayerType(url);
719        LOGV("player type = %d", playerType);
720
721        // create the right type of player
722        sp<MediaPlayerBase> p = createPlayer(playerType);
723        if (p == NULL) return NO_INIT;
724
725        if (!p->hardwareOutput()) {
726            mAudioOutput = new AudioOutput();
727            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
728        }
729
730        // now set data source
731        LOGV(" setDataSource");
732        mStatus = p->setDataSource(url);
733        if (mStatus == NO_ERROR) mPlayer = p;
734        return mStatus;
735    }
736}
737
738status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
739{
740    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
741    struct stat sb;
742    int ret = fstat(fd, &sb);
743    if (ret != 0) {
744        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
745        return UNKNOWN_ERROR;
746    }
747
748    LOGV("st_dev  = %llu", sb.st_dev);
749    LOGV("st_mode = %u", sb.st_mode);
750    LOGV("st_uid  = %lu", sb.st_uid);
751    LOGV("st_gid  = %lu", sb.st_gid);
752    LOGV("st_size = %llu", sb.st_size);
753
754    if (offset >= sb.st_size) {
755        LOGE("offset error");
756        ::close(fd);
757        return UNKNOWN_ERROR;
758    }
759    if (offset + length > sb.st_size) {
760        length = sb.st_size - offset;
761        LOGV("calculated length = %lld", length);
762    }
763
764    player_type playerType = getPlayerType(fd, offset, length);
765    LOGV("player type = %d", playerType);
766
767    // create the right type of player
768    sp<MediaPlayerBase> p = createPlayer(playerType);
769    if (p == NULL) return NO_INIT;
770
771    if (!p->hardwareOutput()) {
772        mAudioOutput = new AudioOutput();
773        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
774    }
775
776    // now set data source
777    mStatus = p->setDataSource(fd, offset, length);
778    if (mStatus == NO_ERROR) mPlayer = p;
779    return mStatus;
780}
781
782status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
783{
784    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
785    sp<MediaPlayerBase> p = getPlayer();
786    if (p == 0) return UNKNOWN_ERROR;
787    return p->setVideoSurface(surface);
788}
789
790status_t MediaPlayerService::Client::invoke(const Parcel& request,
791                                            Parcel *reply)
792{
793    sp<MediaPlayerBase> p = getPlayer();
794    if (p == NULL) return UNKNOWN_ERROR;
795    return p->invoke(request, reply);
796}
797
798// This call doesn't need to access the native player.
799status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
800{
801    status_t status;
802    SortedVector<MetadataType> allow, drop;
803
804    if (unmarshallFilter(filter, &allow, &status) &&
805        unmarshallFilter(filter, &drop, &status)) {
806        Mutex::Autolock lock(mLock);
807
808        mMetadataAllow = allow;
809        mMetadataDrop = drop;
810    }
811    return status;
812}
813
814status_t MediaPlayerService::Client::getMetadata(
815        bool update_only, bool apply_filter, Parcel *reply)
816{
817    status_t status;
818    reply->writeInt32(-1);  // Placeholder for the return code
819
820    SortedVector<MetadataType> updates;
821
822    // We don't block notifications while we fetch the data. We clear
823    // mMetadataUpdated first so we don't lose notifications happening
824    // during the rest of this call.
825    {
826        Mutex::Autolock lock(mLock);
827        if (update_only) {
828            updates = mMetadataUpdated;
829        }
830        mMetadataUpdated.clear();
831    }
832
833    // FIXME: Implement, query the native player and do the optional filtering, etc...
834    status = OK;
835
836    return status;
837}
838
839status_t MediaPlayerService::Client::prepareAsync()
840{
841    LOGV("[%d] prepareAsync", mConnId);
842    sp<MediaPlayerBase> p = getPlayer();
843    if (p == 0) return UNKNOWN_ERROR;
844    status_t ret = p->prepareAsync();
845#if CALLBACK_ANTAGONIZER
846    LOGD("start Antagonizer");
847    if (ret == NO_ERROR) mAntagonizer->start();
848#endif
849    return ret;
850}
851
852status_t MediaPlayerService::Client::start()
853{
854    LOGV("[%d] start", mConnId);
855    sp<MediaPlayerBase> p = getPlayer();
856    if (p == 0) return UNKNOWN_ERROR;
857    p->setLooping(mLoop);
858    return p->start();
859}
860
861status_t MediaPlayerService::Client::stop()
862{
863    LOGV("[%d] stop", mConnId);
864    sp<MediaPlayerBase> p = getPlayer();
865    if (p == 0) return UNKNOWN_ERROR;
866    return p->stop();
867}
868
869status_t MediaPlayerService::Client::pause()
870{
871    LOGV("[%d] pause", mConnId);
872    sp<MediaPlayerBase> p = getPlayer();
873    if (p == 0) return UNKNOWN_ERROR;
874    return p->pause();
875}
876
877status_t MediaPlayerService::Client::isPlaying(bool* state)
878{
879    *state = false;
880    sp<MediaPlayerBase> p = getPlayer();
881    if (p == 0) return UNKNOWN_ERROR;
882    *state = p->isPlaying();
883    LOGV("[%d] isPlaying: %d", mConnId, *state);
884    return NO_ERROR;
885}
886
887status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
888{
889    LOGV("getCurrentPosition");
890    sp<MediaPlayerBase> p = getPlayer();
891    if (p == 0) return UNKNOWN_ERROR;
892    status_t ret = p->getCurrentPosition(msec);
893    if (ret == NO_ERROR) {
894        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
895    } else {
896        LOGE("getCurrentPosition returned %d", ret);
897    }
898    return ret;
899}
900
901status_t MediaPlayerService::Client::getDuration(int *msec)
902{
903    LOGV("getDuration");
904    sp<MediaPlayerBase> p = getPlayer();
905    if (p == 0) return UNKNOWN_ERROR;
906    status_t ret = p->getDuration(msec);
907    if (ret == NO_ERROR) {
908        LOGV("[%d] getDuration = %d", mConnId, *msec);
909    } else {
910        LOGE("getDuration returned %d", ret);
911    }
912    return ret;
913}
914
915status_t MediaPlayerService::Client::seekTo(int msec)
916{
917    LOGV("[%d] seekTo(%d)", mConnId, msec);
918    sp<MediaPlayerBase> p = getPlayer();
919    if (p == 0) return UNKNOWN_ERROR;
920    return p->seekTo(msec);
921}
922
923status_t MediaPlayerService::Client::reset()
924{
925    LOGV("[%d] reset", mConnId);
926    sp<MediaPlayerBase> p = getPlayer();
927    if (p == 0) return UNKNOWN_ERROR;
928    return p->reset();
929}
930
931status_t MediaPlayerService::Client::setAudioStreamType(int type)
932{
933    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
934    // TODO: for hardware output, call player instead
935    Mutex::Autolock l(mLock);
936    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
937    return NO_ERROR;
938}
939
940status_t MediaPlayerService::Client::setLooping(int loop)
941{
942    LOGV("[%d] setLooping(%d)", mConnId, loop);
943    mLoop = loop;
944    sp<MediaPlayerBase> p = getPlayer();
945    if (p != 0) return p->setLooping(loop);
946    return NO_ERROR;
947}
948
949status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
950{
951    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
952    // TODO: for hardware output, call player instead
953    Mutex::Autolock l(mLock);
954    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
955    return NO_ERROR;
956}
957
958
959void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
960{
961    Client* client = static_cast<Client*>(cookie);
962
963    if (MEDIA_INFO == msg &&
964        MEDIA_INFO_METADATA_UPDATE == ext1) {
965        const MetadataType metadata_type = ext2;
966
967        if(client->shouldDropMetadata(metadata_type)) {
968            return;
969        }
970
971        // Update the list of metadata that have changed. getMetadata
972        // also access mMetadataUpdated and clears it.
973        client->addNewMetadataUpdate(metadata_type);
974    }
975    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
976    client->mClient->notify(msg, ext1, ext2);
977}
978
979
980bool MediaPlayerService::Client::shouldDropMetadata(MetadataType code) const
981{
982    Mutex::Autolock lock(mLock);
983
984    if (findMetadata(mMetadataDrop, code)) {
985        return true;
986    }
987
988    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
989        return false;
990    } else {
991        return true;
992    }
993}
994
995
996void MediaPlayerService::Client::addNewMetadataUpdate(MetadataType metadata_type) {
997    Mutex::Autolock lock(mLock);
998    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
999        mMetadataUpdated.add(metadata_type);
1000    }
1001}
1002
1003#if CALLBACK_ANTAGONIZER
1004const int Antagonizer::interval = 10000; // 10 msecs
1005
1006Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1007    mExit(false), mActive(false), mClient(client), mCb(cb)
1008{
1009    createThread(callbackThread, this);
1010}
1011
1012void Antagonizer::kill()
1013{
1014    Mutex::Autolock _l(mLock);
1015    mActive = false;
1016    mExit = true;
1017    mCondition.wait(mLock);
1018}
1019
1020int Antagonizer::callbackThread(void* user)
1021{
1022    LOGD("Antagonizer started");
1023    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1024    while (!p->mExit) {
1025        if (p->mActive) {
1026            LOGV("send event");
1027            p->mCb(p->mClient, 0, 0, 0);
1028        }
1029        usleep(interval);
1030    }
1031    Mutex::Autolock _l(p->mLock);
1032    p->mCondition.signal();
1033    LOGD("Antagonizer stopped");
1034    return 0;
1035}
1036#endif
1037
1038static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1039
1040sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1041{
1042    LOGV("decode(%s)", url);
1043    sp<MemoryBase> mem;
1044    sp<MediaPlayerBase> player;
1045
1046    // Protect our precious, precious DRMd ringtones by only allowing
1047    // decoding of http, but not filesystem paths or content Uris.
1048    // If the application wants to decode those, it should open a
1049    // filedescriptor for them and use that.
1050    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1051        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1052        return mem;
1053    }
1054
1055    player_type playerType = getPlayerType(url);
1056    LOGV("player type = %d", playerType);
1057
1058    // create the right type of player
1059    sp<AudioCache> cache = new AudioCache(url);
1060    player = android::createPlayer(playerType, cache.get(), cache->notify);
1061    if (player == NULL) goto Exit;
1062    if (player->hardwareOutput()) goto Exit;
1063
1064    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1065
1066    // set data source
1067    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1068
1069    LOGV("prepare");
1070    player->prepareAsync();
1071
1072    LOGV("wait for prepare");
1073    if (cache->wait() != NO_ERROR) goto Exit;
1074
1075    LOGV("start");
1076    player->start();
1077
1078    LOGV("wait for playback complete");
1079    if (cache->wait() != NO_ERROR) goto Exit;
1080
1081    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1082    *pSampleRate = cache->sampleRate();
1083    *pNumChannels = cache->channelCount();
1084    *pFormat = cache->format();
1085    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1086
1087Exit:
1088    if (player != 0) player->reset();
1089    return mem;
1090}
1091
1092sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1093{
1094    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1095    sp<MemoryBase> mem;
1096    sp<MediaPlayerBase> player;
1097
1098    player_type playerType = getPlayerType(fd, offset, length);
1099    LOGV("player type = %d", playerType);
1100
1101    // create the right type of player
1102    sp<AudioCache> cache = new AudioCache("decode_fd");
1103    player = android::createPlayer(playerType, cache.get(), cache->notify);
1104    if (player == NULL) goto Exit;
1105    if (player->hardwareOutput()) goto Exit;
1106
1107    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1108
1109    // set data source
1110    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1111
1112    LOGV("prepare");
1113    player->prepareAsync();
1114
1115    LOGV("wait for prepare");
1116    if (cache->wait() != NO_ERROR) goto Exit;
1117
1118    LOGV("start");
1119    player->start();
1120
1121    LOGV("wait for playback complete");
1122    if (cache->wait() != NO_ERROR) goto Exit;
1123
1124    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1125    *pSampleRate = cache->sampleRate();
1126    *pNumChannels = cache->channelCount();
1127    *pFormat = cache->format();
1128    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1129
1130Exit:
1131    if (player != 0) player->reset();
1132    ::close(fd);
1133    return mem;
1134}
1135
1136#undef LOG_TAG
1137#define LOG_TAG "AudioSink"
1138MediaPlayerService::AudioOutput::AudioOutput()
1139{
1140    mTrack = 0;
1141    mStreamType = AudioSystem::MUSIC;
1142    mLeftVolume = 1.0;
1143    mRightVolume = 1.0;
1144    mLatency = 0;
1145    mMsecsPerFrame = 0;
1146    setMinBufferCount();
1147}
1148
1149MediaPlayerService::AudioOutput::~AudioOutput()
1150{
1151    close();
1152}
1153
1154void MediaPlayerService::AudioOutput::setMinBufferCount()
1155{
1156    char value[PROPERTY_VALUE_MAX];
1157    if (property_get("ro.kernel.qemu", value, 0)) {
1158        mIsOnEmulator = true;
1159        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1160    }
1161}
1162
1163bool MediaPlayerService::AudioOutput::isOnEmulator()
1164{
1165    setMinBufferCount();
1166    return mIsOnEmulator;
1167}
1168
1169int MediaPlayerService::AudioOutput::getMinBufferCount()
1170{
1171    setMinBufferCount();
1172    return mMinBufferCount;
1173}
1174
1175ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1176{
1177    if (mTrack == 0) return NO_INIT;
1178    return mTrack->frameCount() * frameSize();
1179}
1180
1181ssize_t MediaPlayerService::AudioOutput::frameCount() const
1182{
1183    if (mTrack == 0) return NO_INIT;
1184    return mTrack->frameCount();
1185}
1186
1187ssize_t MediaPlayerService::AudioOutput::channelCount() const
1188{
1189    if (mTrack == 0) return NO_INIT;
1190    return mTrack->channelCount();
1191}
1192
1193ssize_t MediaPlayerService::AudioOutput::frameSize() const
1194{
1195    if (mTrack == 0) return NO_INIT;
1196    return mTrack->frameSize();
1197}
1198
1199uint32_t MediaPlayerService::AudioOutput::latency () const
1200{
1201    return mLatency;
1202}
1203
1204float MediaPlayerService::AudioOutput::msecsPerFrame() const
1205{
1206    return mMsecsPerFrame;
1207}
1208
1209status_t MediaPlayerService::AudioOutput::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1210{
1211    // Check argument "bufferCount" against the mininum buffer count
1212    if (bufferCount < mMinBufferCount) {
1213        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1214        bufferCount = mMinBufferCount;
1215
1216    }
1217    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1218    if (mTrack) close();
1219    int afSampleRate;
1220    int afFrameCount;
1221    int frameCount;
1222
1223    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1224        return NO_INIT;
1225    }
1226    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1227        return NO_INIT;
1228    }
1229
1230    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1231    AudioTrack *t = new AudioTrack(mStreamType, sampleRate, format, channelCount, frameCount);
1232    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1233        LOGE("Unable to create audio track");
1234        delete t;
1235        return NO_INIT;
1236    }
1237
1238    LOGV("setVolume");
1239    t->setVolume(mLeftVolume, mRightVolume);
1240    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1241    mLatency = t->latency() + kAudioVideoDelayMs;
1242    mTrack = t;
1243    return NO_ERROR;
1244}
1245
1246void MediaPlayerService::AudioOutput::start()
1247{
1248    LOGV("start");
1249    if (mTrack) {
1250        mTrack->setVolume(mLeftVolume, mRightVolume);
1251        mTrack->start();
1252    }
1253}
1254
1255ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1256{
1257    //LOGV("write(%p, %u)", buffer, size);
1258    if (mTrack) return mTrack->write(buffer, size);
1259    return NO_INIT;
1260}
1261
1262void MediaPlayerService::AudioOutput::stop()
1263{
1264    LOGV("stop");
1265    if (mTrack) mTrack->stop();
1266}
1267
1268void MediaPlayerService::AudioOutput::flush()
1269{
1270    LOGV("flush");
1271    if (mTrack) mTrack->flush();
1272}
1273
1274void MediaPlayerService::AudioOutput::pause()
1275{
1276    LOGV("pause");
1277    if (mTrack) mTrack->pause();
1278}
1279
1280void MediaPlayerService::AudioOutput::close()
1281{
1282    LOGV("close");
1283    delete mTrack;
1284    mTrack = 0;
1285}
1286
1287void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1288{
1289    LOGV("setVolume(%f, %f)", left, right);
1290    mLeftVolume = left;
1291    mRightVolume = right;
1292    if (mTrack) {
1293        mTrack->setVolume(left, right);
1294    }
1295}
1296
1297#undef LOG_TAG
1298#define LOG_TAG "AudioCache"
1299MediaPlayerService::AudioCache::AudioCache(const char* name) :
1300    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1301    mError(NO_ERROR), mCommandComplete(false)
1302{
1303    // create ashmem heap
1304    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1305}
1306
1307uint32_t MediaPlayerService::AudioCache::latency () const
1308{
1309    return 0;
1310}
1311
1312float MediaPlayerService::AudioCache::msecsPerFrame() const
1313{
1314    return mMsecsPerFrame;
1315}
1316
1317status_t MediaPlayerService::AudioCache::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1318{
1319    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1320    if (mHeap->getHeapID() < 0) return NO_INIT;
1321    mSampleRate = sampleRate;
1322    mChannelCount = (uint16_t)channelCount;
1323    mFormat = (uint16_t)format;
1324    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1325    return NO_ERROR;
1326}
1327
1328ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1329{
1330    LOGV("write(%p, %u)", buffer, size);
1331    if ((buffer == 0) || (size == 0)) return size;
1332
1333    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1334    if (p == NULL) return NO_INIT;
1335    p += mSize;
1336    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1337    if (mSize + size > mHeap->getSize()) {
1338        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1339        size = mHeap->getSize() - mSize;
1340    }
1341    memcpy(p, buffer, size);
1342    mSize += size;
1343    return size;
1344}
1345
1346// call with lock held
1347status_t MediaPlayerService::AudioCache::wait()
1348{
1349    Mutex::Autolock lock(mLock);
1350    if (!mCommandComplete) {
1351        mSignal.wait(mLock);
1352    }
1353    mCommandComplete = false;
1354
1355    if (mError == NO_ERROR) {
1356        LOGV("wait - success");
1357    } else {
1358        LOGV("wait - error");
1359    }
1360    return mError;
1361}
1362
1363void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1364{
1365    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1366    AudioCache* p = static_cast<AudioCache*>(cookie);
1367
1368    // ignore buffering messages
1369    if (msg == MEDIA_BUFFERING_UPDATE) return;
1370
1371    // set error condition
1372    if (msg == MEDIA_ERROR) {
1373        LOGE("Error %d, %d occurred", ext1, ext2);
1374        p->mError = ext1;
1375    }
1376
1377    // wake up thread
1378    LOGV("wakeup thread");
1379    p->mCommandComplete = true;
1380    p->mSignal.signal();
1381}
1382
1383}; // namespace android
1384