MediaPlayerService.cpp revision 5e07b5774c8b376776caa4f5b0a193767697e97e 
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#include <cutils/atomic.h>
31
32#include <android_runtime/ActivityManager.h>
33#include <utils/IPCThreadState.h>
34#include <utils/IServiceManager.h>
35#include <utils/MemoryHeapBase.h>
36#include <utils/MemoryBase.h>
37#include <cutils/properties.h>
38
39#include <media/MediaPlayerInterface.h>
40#include <media/mediarecorder.h>
41#include <media/MediaMetadataRetrieverInterface.h>
42#include <media/AudioTrack.h>
43
44#include "MediaRecorderClient.h"
45#include "MediaPlayerService.h"
46#include "MetadataRetrieverClient.h"
47
48#include "MidiFile.h"
49#include "VorbisPlayer.h"
50#include <media/PVPlayer.h>
51
52/* desktop Linux needs a little help with gettid() */
53#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
54#define __KERNEL__
55# include <linux/unistd.h>
56#ifdef _syscall0
57_syscall0(pid_t,gettid)
58#else
59pid_t gettid() { return syscall(__NR_gettid);}
60#endif
61#undef __KERNEL__
62#endif
63
64
65namespace android {
66
67// TODO: Temp hack until we can register players
68typedef struct {
69    const char *extension;
70    const player_type playertype;
71} extmap;
72extmap FILE_EXTS [] =  {
73        {".mid", SONIVOX_PLAYER},
74        {".midi", SONIVOX_PLAYER},
75        {".smf", SONIVOX_PLAYER},
76        {".xmf", SONIVOX_PLAYER},
77        {".imy", SONIVOX_PLAYER},
78        {".rtttl", SONIVOX_PLAYER},
79        {".rtx", SONIVOX_PLAYER},
80        {".ota", SONIVOX_PLAYER},
81        {".ogg", VORBIS_PLAYER},
82        {".oga", VORBIS_PLAYER},
83};
84
85// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
86/* static */ const uint32_t MediaPlayerService::AudioOutput::kAudioVideoDelayMs = 96;
87/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
88/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
89
90void MediaPlayerService::instantiate() {
91    defaultServiceManager()->addService(
92            String16("media.player"), new MediaPlayerService());
93}
94
95MediaPlayerService::MediaPlayerService()
96{
97    LOGV("MediaPlayerService created");
98    mNextConnId = 1;
99}
100
101MediaPlayerService::~MediaPlayerService()
102{
103    LOGV("MediaPlayerService destroyed");
104}
105
106sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
107{
108    sp<MediaRecorderClient> recorder = new MediaRecorderClient(pid);
109    LOGV("Create new media recorder client from pid %d", pid);
110    return recorder;
111}
112
113sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
114{
115    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
116    LOGV("Create new media retriever from pid %d", pid);
117    return retriever;
118}
119
120sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url)
121{
122    int32_t connId = android_atomic_inc(&mNextConnId);
123    sp<Client> c = new Client(this, pid, connId, client);
124    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
125    if (NO_ERROR != c->setDataSource(url))
126    {
127        c.clear();
128        return c;
129    }
130    wp<Client> w = c;
131    Mutex::Autolock lock(mLock);
132    mClients.add(w);
133    return c;
134}
135
136sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
137        int fd, int64_t offset, int64_t length)
138{
139    int32_t connId = android_atomic_inc(&mNextConnId);
140    sp<Client> c = new Client(this, pid, connId, client);
141    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
142            connId, pid, fd, offset, length);
143    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
144        c.clear();
145    } else {
146        wp<Client> w = c;
147        Mutex::Autolock lock(mLock);
148        mClients.add(w);
149    }
150    ::close(fd);
151    return c;
152}
153
154status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
155{
156    const size_t SIZE = 256;
157    char buffer[SIZE];
158    String8 result;
159
160    result.append(" AudioCache\n");
161    if (mHeap != 0) {
162        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
163                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
164        result.append(buffer);
165    }
166    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
167            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
168    result.append(buffer);
169    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
170            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
171    result.append(buffer);
172    ::write(fd, result.string(), result.size());
173    return NO_ERROR;
174}
175
176status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
177{
178    const size_t SIZE = 256;
179    char buffer[SIZE];
180    String8 result;
181
182    result.append(" AudioOutput\n");
183    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
184            mStreamType, mLeftVolume, mRightVolume);
185    result.append(buffer);
186    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
187            mMsecsPerFrame, mLatency);
188    result.append(buffer);
189    ::write(fd, result.string(), result.size());
190    if (mTrack != 0) {
191        mTrack->dump(fd, args);
192    }
193    return NO_ERROR;
194}
195
196status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
197{
198    const size_t SIZE = 256;
199    char buffer[SIZE];
200    String8 result;
201    result.append(" Client\n");
202    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
203            mPid, mConnId, mStatus, mLoop?"true": "false");
204    result.append(buffer);
205    write(fd, result.string(), result.size());
206    if (mAudioOutput != 0) {
207        mAudioOutput->dump(fd, args);
208    }
209    write(fd, "\n", 1);
210    return NO_ERROR;
211}
212
213static int myTid() {
214#ifdef HAVE_GETTID
215    return gettid();
216#else
217    return getpid();
218#endif
219}
220
221status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
222{
223    const size_t SIZE = 256;
224    char buffer[SIZE];
225    String8 result;
226    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
227        snprintf(buffer, SIZE, "Permission Denial: "
228                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
229                IPCThreadState::self()->getCallingPid(),
230                IPCThreadState::self()->getCallingUid());
231        result.append(buffer);
232    } else {
233        Mutex::Autolock lock(mLock);
234        for (int i = 0, n = mClients.size(); i < n; ++i) {
235            sp<Client> c = mClients[i].promote();
236            if (c != 0) c->dump(fd, args);
237        }
238        result.append(" Files opened and/or mapped:\n");
239        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
240        FILE *f = fopen(buffer, "r");
241        if (f) {
242            while (!feof(f)) {
243                fgets(buffer, SIZE, f);
244                if (strstr(buffer, " /sdcard/") ||
245                    strstr(buffer, " /system/sounds/") ||
246                    strstr(buffer, " /system/media/")) {
247                    result.append("  ");
248                    result.append(buffer);
249                }
250            }
251            fclose(f);
252        } else {
253            result.append("couldn't open ");
254            result.append(buffer);
255            result.append("\n");
256        }
257
258        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
259        DIR *d = opendir(buffer);
260        if (d) {
261            struct dirent *ent;
262            while((ent = readdir(d)) != NULL) {
263                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
264                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
265                    struct stat s;
266                    if (lstat(buffer, &s) == 0) {
267                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
268                            char linkto[256];
269                            int len = readlink(buffer, linkto, sizeof(linkto));
270                            if(len > 0) {
271                                if(len > 255) {
272                                    linkto[252] = '.';
273                                    linkto[253] = '.';
274                                    linkto[254] = '.';
275                                    linkto[255] = 0;
276                                } else {
277                                    linkto[len] = 0;
278                                }
279                                if (strstr(linkto, "/sdcard/") == linkto ||
280                                    strstr(linkto, "/system/sounds/") == linkto ||
281                                    strstr(linkto, "/system/media/") == linkto) {
282                                    result.append("  ");
283                                    result.append(buffer);
284                                    result.append(" -> ");
285                                    result.append(linkto);
286                                    result.append("\n");
287                                }
288                            }
289                        } else {
290                            result.append("  unexpected type for ");
291                            result.append(buffer);
292                            result.append("\n");
293                        }
294                    }
295                }
296            }
297            closedir(d);
298        } else {
299            result.append("couldn't open ");
300            result.append(buffer);
301            result.append("\n");
302        }
303    }
304    write(fd, result.string(), result.size());
305    return NO_ERROR;
306}
307
308void MediaPlayerService::removeClient(wp<Client> client)
309{
310    Mutex::Autolock lock(mLock);
311    mClients.remove(client);
312}
313
314MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
315        int32_t connId, const sp<IMediaPlayerClient>& client)
316{
317    LOGV("Client(%d) constructor", connId);
318    mPid = pid;
319    mConnId = connId;
320    mService = service;
321    mClient = client;
322    mLoop = false;
323    mStatus = NO_INIT;
324#if CALLBACK_ANTAGONIZER
325    LOGD("create Antagonizer");
326    mAntagonizer = new Antagonizer(notify, this);
327#endif
328}
329
330MediaPlayerService::Client::~Client()
331{
332    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
333    mAudioOutput.clear();
334    wp<Client> client(this);
335    disconnect();
336    mService->removeClient(client);
337}
338
339void MediaPlayerService::Client::disconnect()
340{
341    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
342    // grab local reference and clear main reference to prevent future
343    // access to object
344    sp<MediaPlayerBase> p;
345    {
346        Mutex::Autolock l(mLock);
347        p = mPlayer;
348    }
349    mPlayer.clear();
350
351    // clear the notification to prevent callbacks to dead client
352    // and reset the player. We assume the player will serialize
353    // access to itself if necessary.
354    if (p != 0) {
355        p->setNotifyCallback(0, 0);
356#if CALLBACK_ANTAGONIZER
357        LOGD("kill Antagonizer");
358        mAntagonizer->kill();
359#endif
360        p->reset();
361    }
362
363    IPCThreadState::self()->flushCommands();
364}
365
366static player_type getPlayerType(int fd, int64_t offset, int64_t length)
367{
368    char buf[20];
369    lseek(fd, offset, SEEK_SET);
370    read(fd, buf, sizeof(buf));
371    lseek(fd, offset, SEEK_SET);
372
373    long ident = *((long*)buf);
374
375    // Ogg vorbis?
376    if (ident == 0x5367674f) // 'OggS'
377        return VORBIS_PLAYER;
378
379    // Some kind of MIDI?
380    EAS_DATA_HANDLE easdata;
381    if (EAS_Init(&easdata) == EAS_SUCCESS) {
382        EAS_FILE locator;
383        locator.path = NULL;
384        locator.fd = fd;
385        locator.offset = offset;
386        locator.length = length;
387        EAS_HANDLE  eashandle;
388        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
389            EAS_CloseFile(easdata, eashandle);
390            EAS_Shutdown(easdata);
391            return SONIVOX_PLAYER;
392        }
393        EAS_Shutdown(easdata);
394    }
395
396    // Fall through to PV
397    return PV_PLAYER;
398}
399
400static player_type getPlayerType(const char* url)
401{
402
403    // use MidiFile for MIDI extensions
404    int lenURL = strlen(url);
405    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
406        int len = strlen(FILE_EXTS[i].extension);
407        int start = lenURL - len;
408        if (start > 0) {
409            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
410                return FILE_EXTS[i].playertype;
411            }
412        }
413    }
414
415    // Fall through to PV
416    return PV_PLAYER;
417}
418
419static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
420        notify_callback_f notifyFunc)
421{
422    sp<MediaPlayerBase> p;
423    switch (playerType) {
424        case PV_PLAYER:
425            LOGV(" create PVPlayer");
426            p = new PVPlayer();
427            break;
428        case SONIVOX_PLAYER:
429            LOGV(" create MidiFile");
430            p = new MidiFile();
431            break;
432        case VORBIS_PLAYER:
433            LOGV(" create VorbisPlayer");
434            p = new VorbisPlayer();
435            break;
436    }
437    if (p != NULL) {
438        if (p->initCheck() == NO_ERROR) {
439            p->setNotifyCallback(cookie, notifyFunc);
440        } else {
441            p.clear();
442        }
443    }
444    if (p == NULL) {
445        LOGE("Failed to create player object");
446    }
447    return p;
448}
449
450sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
451{
452    // determine if we have the right player type
453    sp<MediaPlayerBase> p = mPlayer;
454    if ((p != NULL) && (p->playerType() != playerType)) {
455        LOGV("delete player");
456        p.clear();
457    }
458    if (p == NULL) {
459        p = android::createPlayer(playerType, this, notify);
460    }
461    return p;
462}
463
464status_t MediaPlayerService::Client::setDataSource(const char *url)
465{
466    LOGV("setDataSource(%s)", url);
467    if (url == NULL)
468        return UNKNOWN_ERROR;
469
470    if (strncmp(url, "content://", 10) == 0) {
471        // get a filedescriptor for the content Uri and
472        // pass it to the setDataSource(fd) method
473
474        String16 url16(url);
475        int fd = android::openContentProviderFile(url16);
476        if (fd < 0)
477        {
478            LOGE("Couldn't open fd for %s", url);
479            return UNKNOWN_ERROR;
480        }
481        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
482        close(fd);
483        return mStatus;
484    } else {
485        player_type playerType = getPlayerType(url);
486        LOGV("player type = %d", playerType);
487
488        // create the right type of player
489        sp<MediaPlayerBase> p = createPlayer(playerType);
490        if (p == NULL) return NO_INIT;
491
492        if (!p->hardwareOutput()) {
493            mAudioOutput = new AudioOutput();
494            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
495        }
496
497        // now set data source
498        LOGV(" setDataSource");
499        mStatus = p->setDataSource(url);
500        if (mStatus == NO_ERROR) mPlayer = p;
501        return mStatus;
502    }
503}
504
505status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
506{
507    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
508    struct stat sb;
509    int ret = fstat(fd, &sb);
510    if (ret != 0) {
511        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
512        return UNKNOWN_ERROR;
513    }
514
515    LOGV("st_dev  = %llu", sb.st_dev);
516    LOGV("st_mode = %u", sb.st_mode);
517    LOGV("st_uid  = %lu", sb.st_uid);
518    LOGV("st_gid  = %lu", sb.st_gid);
519    LOGV("st_size = %llu", sb.st_size);
520
521    if (offset >= sb.st_size) {
522        LOGE("offset error");
523        ::close(fd);
524        return UNKNOWN_ERROR;
525    }
526    if (offset + length > sb.st_size) {
527        length = sb.st_size - offset;
528        LOGV("calculated length = %lld", length);
529    }
530
531    player_type playerType = getPlayerType(fd, offset, length);
532    LOGV("player type = %d", playerType);
533
534    // create the right type of player
535    sp<MediaPlayerBase> p = createPlayer(playerType);
536    if (p == NULL) return NO_INIT;
537
538    if (!p->hardwareOutput()) {
539        mAudioOutput = new AudioOutput();
540        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
541    }
542
543    // now set data source
544    mStatus = p->setDataSource(fd, offset, length);
545    if (mStatus == NO_ERROR) mPlayer = p;
546    return mStatus;
547}
548
549status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
550{
551    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
552    sp<MediaPlayerBase> p = getPlayer();
553    if (p == 0) return UNKNOWN_ERROR;
554    return p->setVideoSurface(surface);
555}
556
557status_t MediaPlayerService::Client::prepareAsync()
558{
559    LOGV("[%d] prepareAsync", mConnId);
560    sp<MediaPlayerBase> p = getPlayer();
561    if (p == 0) return UNKNOWN_ERROR;
562    status_t ret = p->prepareAsync();
563#if CALLBACK_ANTAGONIZER
564    LOGD("start Antagonizer");
565    if (ret == NO_ERROR) mAntagonizer->start();
566#endif
567    return ret;
568}
569
570status_t MediaPlayerService::Client::start()
571{
572    LOGV("[%d] start", mConnId);
573    sp<MediaPlayerBase> p = getPlayer();
574    if (p == 0) return UNKNOWN_ERROR;
575    p->setLooping(mLoop);
576    return p->start();
577}
578
579status_t MediaPlayerService::Client::stop()
580{
581    LOGV("[%d] stop", mConnId);
582    sp<MediaPlayerBase> p = getPlayer();
583    if (p == 0) return UNKNOWN_ERROR;
584    return p->stop();
585}
586
587status_t MediaPlayerService::Client::pause()
588{
589    LOGV("[%d] pause", mConnId);
590    sp<MediaPlayerBase> p = getPlayer();
591    if (p == 0) return UNKNOWN_ERROR;
592    return p->pause();
593}
594
595status_t MediaPlayerService::Client::isPlaying(bool* state)
596{
597    *state = false;
598    sp<MediaPlayerBase> p = getPlayer();
599    if (p == 0) return UNKNOWN_ERROR;
600    *state = p->isPlaying();
601    LOGV("[%d] isPlaying: %d", mConnId, *state);
602    return NO_ERROR;
603}
604
605status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
606{
607    LOGV("getCurrentPosition");
608    sp<MediaPlayerBase> p = getPlayer();
609    if (p == 0) return UNKNOWN_ERROR;
610    status_t ret = p->getCurrentPosition(msec);
611    if (ret == NO_ERROR) {
612        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
613    } else {
614        LOGE("getCurrentPosition returned %d", ret);
615    }
616    return ret;
617}
618
619status_t MediaPlayerService::Client::getDuration(int *msec)
620{
621    LOGV("getDuration");
622    sp<MediaPlayerBase> p = getPlayer();
623    if (p == 0) return UNKNOWN_ERROR;
624    status_t ret = p->getDuration(msec);
625    if (ret == NO_ERROR) {
626        LOGV("[%d] getDuration = %d", mConnId, *msec);
627    } else {
628        LOGE("getDuration returned %d", ret);
629    }
630    return ret;
631}
632
633status_t MediaPlayerService::Client::seekTo(int msec)
634{
635    LOGV("[%d] seekTo(%d)", mConnId, msec);
636    sp<MediaPlayerBase> p = getPlayer();
637    if (p == 0) return UNKNOWN_ERROR;
638    return p->seekTo(msec);
639}
640
641status_t MediaPlayerService::Client::reset()
642{
643    LOGV("[%d] reset", mConnId);
644    sp<MediaPlayerBase> p = getPlayer();
645    if (p == 0) return UNKNOWN_ERROR;
646    return p->reset();
647}
648
649status_t MediaPlayerService::Client::setAudioStreamType(int type)
650{
651    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
652    // TODO: for hardware output, call player instead
653    Mutex::Autolock l(mLock);
654    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
655    return NO_ERROR;
656}
657
658status_t MediaPlayerService::Client::setLooping(int loop)
659{
660    LOGV("[%d] setLooping(%d)", mConnId, loop);
661    mLoop = loop;
662    sp<MediaPlayerBase> p = getPlayer();
663    if (p != 0) return p->setLooping(loop);
664    return NO_ERROR;
665}
666
667status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
668{
669    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
670    // TODO: for hardware output, call player instead
671    Mutex::Autolock l(mLock);
672    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
673    return NO_ERROR;
674}
675
676void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
677{
678    Client* client = static_cast<Client*>(cookie);
679    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
680    client->mClient->notify(msg, ext1, ext2);
681}
682
683#if CALLBACK_ANTAGONIZER
684const int Antagonizer::interval = 10000; // 10 msecs
685
686Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
687    mExit(false), mActive(false), mClient(client), mCb(cb)
688{
689    createThread(callbackThread, this);
690}
691
692void Antagonizer::kill()
693{
694    Mutex::Autolock _l(mLock);
695    mActive = false;
696    mExit = true;
697    mCondition.wait(mLock);
698}
699
700int Antagonizer::callbackThread(void* user)
701{
702    LOGD("Antagonizer started");
703    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
704    while (!p->mExit) {
705        if (p->mActive) {
706            LOGV("send event");
707            p->mCb(p->mClient, 0, 0, 0);
708        }
709        usleep(interval);
710    }
711    Mutex::Autolock _l(p->mLock);
712    p->mCondition.signal();
713    LOGD("Antagonizer stopped");
714    return 0;
715}
716#endif
717
718static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
719
720sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
721{
722    LOGV("decode(%s)", url);
723    sp<MemoryBase> mem;
724    sp<MediaPlayerBase> player;
725
726    // Protect our precious, precious DRMd ringtones by only allowing
727    // decoding of http, but not filesystem paths or content Uris.
728    // If the application wants to decode those, it should open a
729    // filedescriptor for them and use that.
730    if (url != NULL && strncmp(url, "http://", 7) != 0) {
731        LOGD("Can't decode %s by path, use filedescriptor instead", url);
732        return mem;
733    }
734
735    player_type playerType = getPlayerType(url);
736    LOGV("player type = %d", playerType);
737
738    // create the right type of player
739    sp<AudioCache> cache = new AudioCache(url);
740    player = android::createPlayer(playerType, cache.get(), cache->notify);
741    if (player == NULL) goto Exit;
742    if (player->hardwareOutput()) goto Exit;
743
744    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
745
746    // set data source
747    if (player->setDataSource(url) != NO_ERROR) goto Exit;
748
749    LOGV("prepare");
750    player->prepareAsync();
751
752    LOGV("wait for prepare");
753    if (cache->wait() != NO_ERROR) goto Exit;
754
755    LOGV("start");
756    player->start();
757
758    LOGV("wait for playback complete");
759    if (cache->wait() != NO_ERROR) goto Exit;
760
761    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
762    *pSampleRate = cache->sampleRate();
763    *pNumChannels = cache->channelCount();
764    *pFormat = cache->format();
765    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
766
767Exit:
768    if (player != 0) player->reset();
769    return mem;
770}
771
772sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
773{
774    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
775    sp<MemoryBase> mem;
776    sp<MediaPlayerBase> player;
777
778    player_type playerType = getPlayerType(fd, offset, length);
779    LOGV("player type = %d", playerType);
780
781    // create the right type of player
782    sp<AudioCache> cache = new AudioCache("decode_fd");
783    player = android::createPlayer(playerType, cache.get(), cache->notify);
784    if (player == NULL) goto Exit;
785    if (player->hardwareOutput()) goto Exit;
786
787    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
788
789    // set data source
790    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
791
792    LOGV("prepare");
793    player->prepareAsync();
794
795    LOGV("wait for prepare");
796    if (cache->wait() != NO_ERROR) goto Exit;
797
798    LOGV("start");
799    player->start();
800
801    LOGV("wait for playback complete");
802    if (cache->wait() != NO_ERROR) goto Exit;
803
804    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
805    *pSampleRate = cache->sampleRate();
806    *pNumChannels = cache->channelCount();
807    *pFormat = cache->format();
808    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
809
810Exit:
811    if (player != 0) player->reset();
812    ::close(fd);
813    return mem;
814}
815
816#undef LOG_TAG
817#define LOG_TAG "AudioSink"
818MediaPlayerService::AudioOutput::AudioOutput()
819{
820    mTrack = 0;
821    mStreamType = AudioTrack::MUSIC;
822    mLeftVolume = 1.0;
823    mRightVolume = 1.0;
824    mLatency = 0;
825    mMsecsPerFrame = 0;
826    setMinBufferCount();
827}
828
829MediaPlayerService::AudioOutput::~AudioOutput()
830{
831    close();
832}
833
834void MediaPlayerService::AudioOutput::setMinBufferCount()
835{
836    char value[PROPERTY_VALUE_MAX];
837    if (property_get("ro.kernel.qemu", value, 0)) {
838        mIsOnEmulator = true;
839        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
840    }
841}
842
843bool MediaPlayerService::AudioOutput::isOnEmulator()
844{
845    setMinBufferCount();
846    return mIsOnEmulator;
847}
848
849int MediaPlayerService::AudioOutput::getMinBufferCount()
850{
851    setMinBufferCount();
852    return mMinBufferCount;
853}
854
855ssize_t MediaPlayerService::AudioOutput::bufferSize() const
856{
857    if (mTrack == 0) return NO_INIT;
858    return mTrack->frameCount() * frameSize();
859}
860
861ssize_t MediaPlayerService::AudioOutput::frameCount() const
862{
863    if (mTrack == 0) return NO_INIT;
864    return mTrack->frameCount();
865}
866
867ssize_t MediaPlayerService::AudioOutput::channelCount() const
868{
869    if (mTrack == 0) return NO_INIT;
870    return mTrack->channelCount();
871}
872
873ssize_t MediaPlayerService::AudioOutput::frameSize() const
874{
875    if (mTrack == 0) return NO_INIT;
876    return mTrack->frameSize();
877}
878
879uint32_t MediaPlayerService::AudioOutput::latency () const
880{
881    return mLatency;
882}
883
884float MediaPlayerService::AudioOutput::msecsPerFrame() const
885{
886    return mMsecsPerFrame;
887}
888
889status_t MediaPlayerService::AudioOutput::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
890{
891    // Check argument "bufferCount" against the mininum buffer count
892    if (bufferCount < mMinBufferCount) {
893        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
894        bufferCount = mMinBufferCount;
895
896    }
897    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
898    if (mTrack) close();
899    int afSampleRate;
900    int afFrameCount;
901    int frameCount;
902
903    if (AudioSystem::getOutputFrameCount(&afFrameCount) != NO_ERROR) {
904        return NO_INIT;
905    }
906    if (AudioSystem::getOutputSamplingRate(&afSampleRate) != NO_ERROR) {
907        return NO_INIT;
908    }
909
910    frameCount = (sampleRate*afFrameCount)/afSampleRate;
911    AudioTrack *t = new AudioTrack(mStreamType, sampleRate, format, channelCount, frameCount*bufferCount);
912    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
913        LOGE("Unable to create audio track");
914        delete t;
915        return NO_INIT;
916    }
917
918    LOGV("setVolume");
919    t->setVolume(mLeftVolume, mRightVolume);
920    mMsecsPerFrame = 1.e3 / (float) sampleRate;
921    mLatency = t->latency() + kAudioVideoDelayMs;
922    mTrack = t;
923    return NO_ERROR;
924}
925
926void MediaPlayerService::AudioOutput::start()
927{
928    LOGV("start");
929    if (mTrack) {
930        mTrack->setVolume(mLeftVolume, mRightVolume);
931        mTrack->start();
932    }
933}
934
935ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
936{
937    //LOGV("write(%p, %u)", buffer, size);
938    if (mTrack) return mTrack->write(buffer, size);
939    return NO_INIT;
940}
941
942void MediaPlayerService::AudioOutput::stop()
943{
944    LOGV("stop");
945    if (mTrack) mTrack->stop();
946}
947
948void MediaPlayerService::AudioOutput::flush()
949{
950    LOGV("flush");
951    if (mTrack) mTrack->flush();
952}
953
954void MediaPlayerService::AudioOutput::pause()
955{
956    LOGV("pause");
957    if (mTrack) mTrack->pause();
958}
959
960void MediaPlayerService::AudioOutput::close()
961{
962    LOGV("close");
963    delete mTrack;
964    mTrack = 0;
965}
966
967void MediaPlayerService::AudioOutput::setVolume(float left, float right)
968{
969    LOGV("setVolume(%f, %f)", left, right);
970    mLeftVolume = left;
971    mRightVolume = right;
972    if (mTrack) {
973        mTrack->setVolume(left, right);
974    }
975}
976
977#undef LOG_TAG
978#define LOG_TAG "AudioCache"
979MediaPlayerService::AudioCache::AudioCache(const char* name) :
980    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
981    mError(NO_ERROR), mCommandComplete(false)
982{
983    // create ashmem heap
984    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
985}
986
987uint32_t MediaPlayerService::AudioCache::latency () const
988{
989    return 0;
990}
991
992float MediaPlayerService::AudioCache::msecsPerFrame() const
993{
994    return mMsecsPerFrame;
995}
996
997status_t MediaPlayerService::AudioCache::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
998{
999    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1000    if (mHeap->getHeapID() < 0) return NO_INIT;
1001    mSampleRate = sampleRate;
1002    mChannelCount = (uint16_t)channelCount;
1003    mFormat = (uint16_t)format;
1004    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1005    return NO_ERROR;
1006}
1007
1008ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1009{
1010    LOGV("write(%p, %u)", buffer, size);
1011    if ((buffer == 0) || (size == 0)) return size;
1012
1013    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1014    if (p == NULL) return NO_INIT;
1015    p += mSize;
1016    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1017    if (mSize + size > mHeap->getSize()) {
1018        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1019        size = mHeap->getSize() - mSize;
1020    }
1021    memcpy(p, buffer, size);
1022    mSize += size;
1023    return size;
1024}
1025
1026// call with lock held
1027status_t MediaPlayerService::AudioCache::wait()
1028{
1029    Mutex::Autolock lock(mLock);
1030    if (!mCommandComplete) {
1031        mSignal.wait(mLock);
1032    }
1033    mCommandComplete = false;
1034
1035    if (mError == NO_ERROR) {
1036        LOGV("wait - success");
1037    } else {
1038        LOGV("wait - error");
1039    }
1040    return mError;
1041}
1042
1043void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1044{
1045    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1046    AudioCache* p = static_cast<AudioCache*>(cookie);
1047
1048    // ignore buffering messages
1049    if (msg == MEDIA_BUFFERING_UPDATE) return;
1050
1051    // set error condition
1052    if (msg == MEDIA_ERROR) {
1053        LOGE("Error %d, %d occurred", ext1, ext2);
1054        p->mError = ext1;
1055    }
1056
1057    // wake up thread
1058    LOGV("wakeup thread");
1059    p->mCommandComplete = true;
1060    p->mSignal.signal();
1061}
1062
1063}; // namespace android
1064