MediaPlayerService.cpp revision 795fa5848276bab87445fa64fd0941c13ef62398 
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
221#if defined(__arm__)
222extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
223        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
224extern "C" void free_malloc_leak_info(uint8_t* info);
225
226void memStatus(int fd, const Vector<String16>& args)
227{
228    const size_t SIZE = 256;
229    char buffer[SIZE];
230    String8 result;
231
232    typedef struct {
233        size_t size;
234        size_t dups;
235        intptr_t * backtrace;
236    } AllocEntry;
237
238    uint8_t *info = NULL;
239    size_t overallSize = 0;
240    size_t infoSize = 0;
241    size_t totalMemory = 0;
242    size_t backtraceSize = 0;
243
244    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
245    if (info) {
246        uint8_t *ptr = info;
247        size_t count = overallSize / infoSize;
248
249        snprintf(buffer, SIZE, " Allocation count %i\n", count);
250        result.append(buffer);
251
252        AllocEntry * entries = new AllocEntry[count];
253
254        for (size_t i = 0; i < count; i++) {
255            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
256            AllocEntry *e = &entries[i];
257
258            e->size = *reinterpret_cast<size_t *>(ptr);
259            ptr += sizeof(size_t);
260
261            e->dups = *reinterpret_cast<size_t *>(ptr);
262            ptr += sizeof(size_t);
263
264            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
265            ptr += sizeof(intptr_t) * backtraceSize;
266        }
267
268        // Now we need to sort the entries.  They come sorted by size but
269        // not by stack trace which causes problems using diff.
270        bool moved;
271        do {
272            moved = false;
273            for (size_t i = 0; i < (count - 1); i++) {
274                AllocEntry *e1 = &entries[i];
275                AllocEntry *e2 = &entries[i+1];
276
277                bool swap = e1->size < e2->size;
278                if (e1->size == e2->size) {
279                    for(size_t j = 0; j < backtraceSize; j++) {
280                        if (e1->backtrace[j] == e2->backtrace[j]) {
281                            continue;
282                        }
283                        swap = e1->backtrace[j] < e2->backtrace[j];
284                        break;
285                    }
286                }
287                if (swap) {
288                    AllocEntry t = entries[i];
289                    entries[i] = entries[i+1];
290                    entries[i+1] = t;
291                    moved = true;
292                }
293            }
294        } while (moved);
295
296        for (size_t i = 0; i < count; i++) {
297            AllocEntry *e = &entries[i];
298
299            snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups);
300            result.append(buffer);
301            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
302                if (ct) {
303                    result.append(", ");
304                }
305                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
306                result.append(buffer);
307            }
308            result.append("\n");
309        }
310
311        delete[] entries;
312        free_malloc_leak_info(info);
313    }
314
315    write(fd, result.string(), result.size());
316}
317#endif
318
319status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
320{
321    const size_t SIZE = 256;
322    char buffer[SIZE];
323    String8 result;
324    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
325        snprintf(buffer, SIZE, "Permission Denial: "
326                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
327                IPCThreadState::self()->getCallingPid(),
328                IPCThreadState::self()->getCallingUid());
329        result.append(buffer);
330    } else {
331        Mutex::Autolock lock(mLock);
332        for (int i = 0, n = mClients.size(); i < n; ++i) {
333            sp<Client> c = mClients[i].promote();
334            if (c != 0) c->dump(fd, args);
335        }
336        result.append(" Files opened and/or mapped:\n");
337        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
338        FILE *f = fopen(buffer, "r");
339        if (f) {
340            while (!feof(f)) {
341                fgets(buffer, SIZE, f);
342                if (strstr(buffer, " /sdcard/") ||
343                    strstr(buffer, " /system/sounds/") ||
344                    strstr(buffer, " /system/media/")) {
345                    result.append("  ");
346                    result.append(buffer);
347                }
348            }
349            fclose(f);
350        } else {
351            result.append("couldn't open ");
352            result.append(buffer);
353            result.append("\n");
354        }
355
356        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
357        DIR *d = opendir(buffer);
358        if (d) {
359            struct dirent *ent;
360            while((ent = readdir(d)) != NULL) {
361                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
362                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
363                    struct stat s;
364                    if (lstat(buffer, &s) == 0) {
365                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
366                            char linkto[256];
367                            int len = readlink(buffer, linkto, sizeof(linkto));
368                            if(len > 0) {
369                                if(len > 255) {
370                                    linkto[252] = '.';
371                                    linkto[253] = '.';
372                                    linkto[254] = '.';
373                                    linkto[255] = 0;
374                                } else {
375                                    linkto[len] = 0;
376                                }
377                                if (strstr(linkto, "/sdcard/") == linkto ||
378                                    strstr(linkto, "/system/sounds/") == linkto ||
379                                    strstr(linkto, "/system/media/") == linkto) {
380                                    result.append("  ");
381                                    result.append(buffer);
382                                    result.append(" -> ");
383                                    result.append(linkto);
384                                    result.append("\n");
385                                }
386                            }
387                        } else {
388                            result.append("  unexpected type for ");
389                            result.append(buffer);
390                            result.append("\n");
391                        }
392                    }
393                }
394            }
395            closedir(d);
396        } else {
397            result.append("couldn't open ");
398            result.append(buffer);
399            result.append("\n");
400        }
401
402#if defined(__arm__)
403        bool dumpMem = false;
404        for (size_t i = 0; i < args.size(); i++) {
405            if (args[i] == String16("-m")) {
406                dumpMem = true;
407            }
408        }
409        if (dumpMem) {
410            memStatus(fd, args);
411        }
412#endif
413    }
414    write(fd, result.string(), result.size());
415    return NO_ERROR;
416}
417
418void MediaPlayerService::removeClient(wp<Client> client)
419{
420    Mutex::Autolock lock(mLock);
421    mClients.remove(client);
422}
423
424MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
425        int32_t connId, const sp<IMediaPlayerClient>& client)
426{
427    LOGV("Client(%d) constructor", connId);
428    mPid = pid;
429    mConnId = connId;
430    mService = service;
431    mClient = client;
432    mLoop = false;
433    mStatus = NO_INIT;
434#if CALLBACK_ANTAGONIZER
435    LOGD("create Antagonizer");
436    mAntagonizer = new Antagonizer(notify, this);
437#endif
438}
439
440MediaPlayerService::Client::~Client()
441{
442    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
443    mAudioOutput.clear();
444    wp<Client> client(this);
445    disconnect();
446    mService->removeClient(client);
447}
448
449void MediaPlayerService::Client::disconnect()
450{
451    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
452    // grab local reference and clear main reference to prevent future
453    // access to object
454    sp<MediaPlayerBase> p;
455    {
456        Mutex::Autolock l(mLock);
457        p = mPlayer;
458    }
459    mClient.clear();
460    mPlayer.clear();
461
462    // clear the notification to prevent callbacks to dead client
463    // and reset the player. We assume the player will serialize
464    // access to itself if necessary.
465    if (p != 0) {
466        p->setNotifyCallback(0, 0);
467#if CALLBACK_ANTAGONIZER
468        LOGD("kill Antagonizer");
469        mAntagonizer->kill();
470#endif
471        p->reset();
472    }
473
474    IPCThreadState::self()->flushCommands();
475}
476
477static player_type getPlayerType(int fd, int64_t offset, int64_t length)
478{
479    char buf[20];
480    lseek(fd, offset, SEEK_SET);
481    read(fd, buf, sizeof(buf));
482    lseek(fd, offset, SEEK_SET);
483
484    long ident = *((long*)buf);
485
486    // Ogg vorbis?
487    if (ident == 0x5367674f) // 'OggS'
488        return VORBIS_PLAYER;
489
490    // Some kind of MIDI?
491    EAS_DATA_HANDLE easdata;
492    if (EAS_Init(&easdata) == EAS_SUCCESS) {
493        EAS_FILE locator;
494        locator.path = NULL;
495        locator.fd = fd;
496        locator.offset = offset;
497        locator.length = length;
498        EAS_HANDLE  eashandle;
499        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
500            EAS_CloseFile(easdata, eashandle);
501            EAS_Shutdown(easdata);
502            return SONIVOX_PLAYER;
503        }
504        EAS_Shutdown(easdata);
505    }
506
507    // Fall through to PV
508    return PV_PLAYER;
509}
510
511static player_type getPlayerType(const char* url)
512{
513
514    // use MidiFile for MIDI extensions
515    int lenURL = strlen(url);
516    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
517        int len = strlen(FILE_EXTS[i].extension);
518        int start = lenURL - len;
519        if (start > 0) {
520            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
521                return FILE_EXTS[i].playertype;
522            }
523        }
524    }
525
526    // Fall through to PV
527    return PV_PLAYER;
528}
529
530static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
531        notify_callback_f notifyFunc)
532{
533    sp<MediaPlayerBase> p;
534    switch (playerType) {
535        case PV_PLAYER:
536            LOGV(" create PVPlayer");
537            p = new PVPlayer();
538            break;
539        case SONIVOX_PLAYER:
540            LOGV(" create MidiFile");
541            p = new MidiFile();
542            break;
543        case VORBIS_PLAYER:
544            LOGV(" create VorbisPlayer");
545            p = new VorbisPlayer();
546            break;
547    }
548    if (p != NULL) {
549        if (p->initCheck() == NO_ERROR) {
550            p->setNotifyCallback(cookie, notifyFunc);
551        } else {
552            p.clear();
553        }
554    }
555    if (p == NULL) {
556        LOGE("Failed to create player object");
557    }
558    return p;
559}
560
561sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
562{
563    // determine if we have the right player type
564    sp<MediaPlayerBase> p = mPlayer;
565    if ((p != NULL) && (p->playerType() != playerType)) {
566        LOGV("delete player");
567        p.clear();
568    }
569    if (p == NULL) {
570        p = android::createPlayer(playerType, this, notify);
571    }
572    return p;
573}
574
575status_t MediaPlayerService::Client::setDataSource(const char *url)
576{
577    LOGV("setDataSource(%s)", url);
578    if (url == NULL)
579        return UNKNOWN_ERROR;
580
581    if (strncmp(url, "content://", 10) == 0) {
582        // get a filedescriptor for the content Uri and
583        // pass it to the setDataSource(fd) method
584
585        String16 url16(url);
586        int fd = android::openContentProviderFile(url16);
587        if (fd < 0)
588        {
589            LOGE("Couldn't open fd for %s", url);
590            return UNKNOWN_ERROR;
591        }
592        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
593        close(fd);
594        return mStatus;
595    } else {
596        player_type playerType = getPlayerType(url);
597        LOGV("player type = %d", playerType);
598
599        // create the right type of player
600        sp<MediaPlayerBase> p = createPlayer(playerType);
601        if (p == NULL) return NO_INIT;
602
603        if (!p->hardwareOutput()) {
604            mAudioOutput = new AudioOutput();
605            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
606        }
607
608        // now set data source
609        LOGV(" setDataSource");
610        mStatus = p->setDataSource(url);
611        if (mStatus == NO_ERROR) mPlayer = p;
612        return mStatus;
613    }
614}
615
616status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
617{
618    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
619    struct stat sb;
620    int ret = fstat(fd, &sb);
621    if (ret != 0) {
622        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
623        return UNKNOWN_ERROR;
624    }
625
626    LOGV("st_dev  = %llu", sb.st_dev);
627    LOGV("st_mode = %u", sb.st_mode);
628    LOGV("st_uid  = %lu", sb.st_uid);
629    LOGV("st_gid  = %lu", sb.st_gid);
630    LOGV("st_size = %llu", sb.st_size);
631
632    if (offset >= sb.st_size) {
633        LOGE("offset error");
634        ::close(fd);
635        return UNKNOWN_ERROR;
636    }
637    if (offset + length > sb.st_size) {
638        length = sb.st_size - offset;
639        LOGV("calculated length = %lld", length);
640    }
641
642    player_type playerType = getPlayerType(fd, offset, length);
643    LOGV("player type = %d", playerType);
644
645    // create the right type of player
646    sp<MediaPlayerBase> p = createPlayer(playerType);
647    if (p == NULL) return NO_INIT;
648
649    if (!p->hardwareOutput()) {
650        mAudioOutput = new AudioOutput();
651        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
652    }
653
654    // now set data source
655    mStatus = p->setDataSource(fd, offset, length);
656    if (mStatus == NO_ERROR) mPlayer = p;
657    return mStatus;
658}
659
660status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
661{
662    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
663    sp<MediaPlayerBase> p = getPlayer();
664    if (p == 0) return UNKNOWN_ERROR;
665    return p->setVideoSurface(surface);
666}
667
668status_t MediaPlayerService::Client::prepareAsync()
669{
670    LOGV("[%d] prepareAsync", mConnId);
671    sp<MediaPlayerBase> p = getPlayer();
672    if (p == 0) return UNKNOWN_ERROR;
673    status_t ret = p->prepareAsync();
674#if CALLBACK_ANTAGONIZER
675    LOGD("start Antagonizer");
676    if (ret == NO_ERROR) mAntagonizer->start();
677#endif
678    return ret;
679}
680
681status_t MediaPlayerService::Client::start()
682{
683    LOGV("[%d] start", mConnId);
684    sp<MediaPlayerBase> p = getPlayer();
685    if (p == 0) return UNKNOWN_ERROR;
686    p->setLooping(mLoop);
687    return p->start();
688}
689
690status_t MediaPlayerService::Client::stop()
691{
692    LOGV("[%d] stop", mConnId);
693    sp<MediaPlayerBase> p = getPlayer();
694    if (p == 0) return UNKNOWN_ERROR;
695    return p->stop();
696}
697
698status_t MediaPlayerService::Client::pause()
699{
700    LOGV("[%d] pause", mConnId);
701    sp<MediaPlayerBase> p = getPlayer();
702    if (p == 0) return UNKNOWN_ERROR;
703    return p->pause();
704}
705
706status_t MediaPlayerService::Client::isPlaying(bool* state)
707{
708    *state = false;
709    sp<MediaPlayerBase> p = getPlayer();
710    if (p == 0) return UNKNOWN_ERROR;
711    *state = p->isPlaying();
712    LOGV("[%d] isPlaying: %d", mConnId, *state);
713    return NO_ERROR;
714}
715
716status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
717{
718    LOGV("getCurrentPosition");
719    sp<MediaPlayerBase> p = getPlayer();
720    if (p == 0) return UNKNOWN_ERROR;
721    status_t ret = p->getCurrentPosition(msec);
722    if (ret == NO_ERROR) {
723        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
724    } else {
725        LOGE("getCurrentPosition returned %d", ret);
726    }
727    return ret;
728}
729
730status_t MediaPlayerService::Client::getDuration(int *msec)
731{
732    LOGV("getDuration");
733    sp<MediaPlayerBase> p = getPlayer();
734    if (p == 0) return UNKNOWN_ERROR;
735    status_t ret = p->getDuration(msec);
736    if (ret == NO_ERROR) {
737        LOGV("[%d] getDuration = %d", mConnId, *msec);
738    } else {
739        LOGE("getDuration returned %d", ret);
740    }
741    return ret;
742}
743
744status_t MediaPlayerService::Client::seekTo(int msec)
745{
746    LOGV("[%d] seekTo(%d)", mConnId, msec);
747    sp<MediaPlayerBase> p = getPlayer();
748    if (p == 0) return UNKNOWN_ERROR;
749    return p->seekTo(msec);
750}
751
752status_t MediaPlayerService::Client::reset()
753{
754    LOGV("[%d] reset", mConnId);
755    sp<MediaPlayerBase> p = getPlayer();
756    if (p == 0) return UNKNOWN_ERROR;
757    return p->reset();
758}
759
760status_t MediaPlayerService::Client::setAudioStreamType(int type)
761{
762    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
763    // TODO: for hardware output, call player instead
764    Mutex::Autolock l(mLock);
765    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
766    return NO_ERROR;
767}
768
769status_t MediaPlayerService::Client::setLooping(int loop)
770{
771    LOGV("[%d] setLooping(%d)", mConnId, loop);
772    mLoop = loop;
773    sp<MediaPlayerBase> p = getPlayer();
774    if (p != 0) return p->setLooping(loop);
775    return NO_ERROR;
776}
777
778status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
779{
780    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
781    // TODO: for hardware output, call player instead
782    Mutex::Autolock l(mLock);
783    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
784    return NO_ERROR;
785}
786
787void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
788{
789    Client* client = static_cast<Client*>(cookie);
790    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
791    client->mClient->notify(msg, ext1, ext2);
792}
793
794#if CALLBACK_ANTAGONIZER
795const int Antagonizer::interval = 10000; // 10 msecs
796
797Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
798    mExit(false), mActive(false), mClient(client), mCb(cb)
799{
800    createThread(callbackThread, this);
801}
802
803void Antagonizer::kill()
804{
805    Mutex::Autolock _l(mLock);
806    mActive = false;
807    mExit = true;
808    mCondition.wait(mLock);
809}
810
811int Antagonizer::callbackThread(void* user)
812{
813    LOGD("Antagonizer started");
814    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
815    while (!p->mExit) {
816        if (p->mActive) {
817            LOGV("send event");
818            p->mCb(p->mClient, 0, 0, 0);
819        }
820        usleep(interval);
821    }
822    Mutex::Autolock _l(p->mLock);
823    p->mCondition.signal();
824    LOGD("Antagonizer stopped");
825    return 0;
826}
827#endif
828
829static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
830
831sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
832{
833    LOGV("decode(%s)", url);
834    sp<MemoryBase> mem;
835    sp<MediaPlayerBase> player;
836
837    // Protect our precious, precious DRMd ringtones by only allowing
838    // decoding of http, but not filesystem paths or content Uris.
839    // If the application wants to decode those, it should open a
840    // filedescriptor for them and use that.
841    if (url != NULL && strncmp(url, "http://", 7) != 0) {
842        LOGD("Can't decode %s by path, use filedescriptor instead", url);
843        return mem;
844    }
845
846    player_type playerType = getPlayerType(url);
847    LOGV("player type = %d", playerType);
848
849    // create the right type of player
850    sp<AudioCache> cache = new AudioCache(url);
851    player = android::createPlayer(playerType, cache.get(), cache->notify);
852    if (player == NULL) goto Exit;
853    if (player->hardwareOutput()) goto Exit;
854
855    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
856
857    // set data source
858    if (player->setDataSource(url) != NO_ERROR) goto Exit;
859
860    LOGV("prepare");
861    player->prepareAsync();
862
863    LOGV("wait for prepare");
864    if (cache->wait() != NO_ERROR) goto Exit;
865
866    LOGV("start");
867    player->start();
868
869    LOGV("wait for playback complete");
870    if (cache->wait() != NO_ERROR) goto Exit;
871
872    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
873    *pSampleRate = cache->sampleRate();
874    *pNumChannels = cache->channelCount();
875    *pFormat = cache->format();
876    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
877
878Exit:
879    if (player != 0) player->reset();
880    return mem;
881}
882
883sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
884{
885    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
886    sp<MemoryBase> mem;
887    sp<MediaPlayerBase> player;
888
889    player_type playerType = getPlayerType(fd, offset, length);
890    LOGV("player type = %d", playerType);
891
892    // create the right type of player
893    sp<AudioCache> cache = new AudioCache("decode_fd");
894    player = android::createPlayer(playerType, cache.get(), cache->notify);
895    if (player == NULL) goto Exit;
896    if (player->hardwareOutput()) goto Exit;
897
898    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
899
900    // set data source
901    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
902
903    LOGV("prepare");
904    player->prepareAsync();
905
906    LOGV("wait for prepare");
907    if (cache->wait() != NO_ERROR) goto Exit;
908
909    LOGV("start");
910    player->start();
911
912    LOGV("wait for playback complete");
913    if (cache->wait() != NO_ERROR) goto Exit;
914
915    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
916    *pSampleRate = cache->sampleRate();
917    *pNumChannels = cache->channelCount();
918    *pFormat = cache->format();
919    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
920
921Exit:
922    if (player != 0) player->reset();
923    ::close(fd);
924    return mem;
925}
926
927#undef LOG_TAG
928#define LOG_TAG "AudioSink"
929MediaPlayerService::AudioOutput::AudioOutput()
930{
931    mTrack = 0;
932    mStreamType = AudioSystem::MUSIC;
933    mLeftVolume = 1.0;
934    mRightVolume = 1.0;
935    mLatency = 0;
936    mMsecsPerFrame = 0;
937    setMinBufferCount();
938}
939
940MediaPlayerService::AudioOutput::~AudioOutput()
941{
942    close();
943}
944
945void MediaPlayerService::AudioOutput::setMinBufferCount()
946{
947    char value[PROPERTY_VALUE_MAX];
948    if (property_get("ro.kernel.qemu", value, 0)) {
949        mIsOnEmulator = true;
950        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
951    }
952}
953
954bool MediaPlayerService::AudioOutput::isOnEmulator()
955{
956    setMinBufferCount();
957    return mIsOnEmulator;
958}
959
960int MediaPlayerService::AudioOutput::getMinBufferCount()
961{
962    setMinBufferCount();
963    return mMinBufferCount;
964}
965
966ssize_t MediaPlayerService::AudioOutput::bufferSize() const
967{
968    if (mTrack == 0) return NO_INIT;
969    return mTrack->frameCount() * frameSize();
970}
971
972ssize_t MediaPlayerService::AudioOutput::frameCount() const
973{
974    if (mTrack == 0) return NO_INIT;
975    return mTrack->frameCount();
976}
977
978ssize_t MediaPlayerService::AudioOutput::channelCount() const
979{
980    if (mTrack == 0) return NO_INIT;
981    return mTrack->channelCount();
982}
983
984ssize_t MediaPlayerService::AudioOutput::frameSize() const
985{
986    if (mTrack == 0) return NO_INIT;
987    return mTrack->frameSize();
988}
989
990uint32_t MediaPlayerService::AudioOutput::latency () const
991{
992    return mLatency;
993}
994
995float MediaPlayerService::AudioOutput::msecsPerFrame() const
996{
997    return mMsecsPerFrame;
998}
999
1000status_t MediaPlayerService::AudioOutput::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1001{
1002    // Check argument "bufferCount" against the mininum buffer count
1003    if (bufferCount < mMinBufferCount) {
1004        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1005        bufferCount = mMinBufferCount;
1006
1007    }
1008    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1009    if (mTrack) close();
1010    int afSampleRate;
1011    int afFrameCount;
1012    int frameCount;
1013
1014    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1015        return NO_INIT;
1016    }
1017    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1018        return NO_INIT;
1019    }
1020
1021    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1022    AudioTrack *t = new AudioTrack(mStreamType, sampleRate, format, channelCount, frameCount);
1023    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1024        LOGE("Unable to create audio track");
1025        delete t;
1026        return NO_INIT;
1027    }
1028
1029    LOGV("setVolume");
1030    t->setVolume(mLeftVolume, mRightVolume);
1031    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1032    mLatency = t->latency() + kAudioVideoDelayMs;
1033    mTrack = t;
1034    return NO_ERROR;
1035}
1036
1037void MediaPlayerService::AudioOutput::start()
1038{
1039    LOGV("start");
1040    if (mTrack) {
1041        mTrack->setVolume(mLeftVolume, mRightVolume);
1042        mTrack->start();
1043    }
1044}
1045
1046ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1047{
1048    //LOGV("write(%p, %u)", buffer, size);
1049    if (mTrack) return mTrack->write(buffer, size);
1050    return NO_INIT;
1051}
1052
1053void MediaPlayerService::AudioOutput::stop()
1054{
1055    LOGV("stop");
1056    if (mTrack) mTrack->stop();
1057}
1058
1059void MediaPlayerService::AudioOutput::flush()
1060{
1061    LOGV("flush");
1062    if (mTrack) mTrack->flush();
1063}
1064
1065void MediaPlayerService::AudioOutput::pause()
1066{
1067    LOGV("pause");
1068    if (mTrack) mTrack->pause();
1069}
1070
1071void MediaPlayerService::AudioOutput::close()
1072{
1073    LOGV("close");
1074    delete mTrack;
1075    mTrack = 0;
1076}
1077
1078void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1079{
1080    LOGV("setVolume(%f, %f)", left, right);
1081    mLeftVolume = left;
1082    mRightVolume = right;
1083    if (mTrack) {
1084        mTrack->setVolume(left, right);
1085    }
1086}
1087
1088#undef LOG_TAG
1089#define LOG_TAG "AudioCache"
1090MediaPlayerService::AudioCache::AudioCache(const char* name) :
1091    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1092    mError(NO_ERROR), mCommandComplete(false)
1093{
1094    // create ashmem heap
1095    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1096}
1097
1098uint32_t MediaPlayerService::AudioCache::latency () const
1099{
1100    return 0;
1101}
1102
1103float MediaPlayerService::AudioCache::msecsPerFrame() const
1104{
1105    return mMsecsPerFrame;
1106}
1107
1108status_t MediaPlayerService::AudioCache::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1109{
1110    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1111    if (mHeap->getHeapID() < 0) return NO_INIT;
1112    mSampleRate = sampleRate;
1113    mChannelCount = (uint16_t)channelCount;
1114    mFormat = (uint16_t)format;
1115    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1116    return NO_ERROR;
1117}
1118
1119ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1120{
1121    LOGV("write(%p, %u)", buffer, size);
1122    if ((buffer == 0) || (size == 0)) return size;
1123
1124    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1125    if (p == NULL) return NO_INIT;
1126    p += mSize;
1127    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1128    if (mSize + size > mHeap->getSize()) {
1129        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1130        size = mHeap->getSize() - mSize;
1131    }
1132    memcpy(p, buffer, size);
1133    mSize += size;
1134    return size;
1135}
1136
1137// call with lock held
1138status_t MediaPlayerService::AudioCache::wait()
1139{
1140    Mutex::Autolock lock(mLock);
1141    if (!mCommandComplete) {
1142        mSignal.wait(mLock);
1143    }
1144    mCommandComplete = false;
1145
1146    if (mError == NO_ERROR) {
1147        LOGV("wait - success");
1148    } else {
1149        LOGV("wait - error");
1150    }
1151    return mError;
1152}
1153
1154void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1155{
1156    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1157    AudioCache* p = static_cast<AudioCache*>(cookie);
1158
1159    // ignore buffering messages
1160    if (msg == MEDIA_BUFFERING_UPDATE) return;
1161
1162    // set error condition
1163    if (msg == MEDIA_ERROR) {
1164        LOGE("Error %d, %d occurred", ext1, ext2);
1165        p->mError = ext1;
1166    }
1167
1168    // wake up thread
1169    LOGV("wakeup thread");
1170    p->mCommandComplete = true;
1171    p->mSignal.signal();
1172}
1173
1174}; // namespace android
1175