MediaPlayerService.cpp revision 99ffda877980468a9ae31e013cd10fb3645df1b0 
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    mPlayer.clear();
460
461    // clear the notification to prevent callbacks to dead client
462    // and reset the player. We assume the player will serialize
463    // access to itself if necessary.
464    if (p != 0) {
465        p->setNotifyCallback(0, 0);
466#if CALLBACK_ANTAGONIZER
467        LOGD("kill Antagonizer");
468        mAntagonizer->kill();
469#endif
470        p->reset();
471    }
472
473    IPCThreadState::self()->flushCommands();
474}
475
476static player_type getPlayerType(int fd, int64_t offset, int64_t length)
477{
478    char buf[20];
479    lseek(fd, offset, SEEK_SET);
480    read(fd, buf, sizeof(buf));
481    lseek(fd, offset, SEEK_SET);
482
483    long ident = *((long*)buf);
484
485    // Ogg vorbis?
486    if (ident == 0x5367674f) // 'OggS'
487        return VORBIS_PLAYER;
488
489    // Some kind of MIDI?
490    EAS_DATA_HANDLE easdata;
491    if (EAS_Init(&easdata) == EAS_SUCCESS) {
492        EAS_FILE locator;
493        locator.path = NULL;
494        locator.fd = fd;
495        locator.offset = offset;
496        locator.length = length;
497        EAS_HANDLE  eashandle;
498        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
499            EAS_CloseFile(easdata, eashandle);
500            EAS_Shutdown(easdata);
501            return SONIVOX_PLAYER;
502        }
503        EAS_Shutdown(easdata);
504    }
505
506    // Fall through to PV
507    return PV_PLAYER;
508}
509
510static player_type getPlayerType(const char* url)
511{
512
513    // use MidiFile for MIDI extensions
514    int lenURL = strlen(url);
515    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
516        int len = strlen(FILE_EXTS[i].extension);
517        int start = lenURL - len;
518        if (start > 0) {
519            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
520                return FILE_EXTS[i].playertype;
521            }
522        }
523    }
524
525    // Fall through to PV
526    return PV_PLAYER;
527}
528
529static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
530        notify_callback_f notifyFunc)
531{
532    sp<MediaPlayerBase> p;
533    switch (playerType) {
534        case PV_PLAYER:
535            LOGV(" create PVPlayer");
536            p = new PVPlayer();
537            break;
538        case SONIVOX_PLAYER:
539            LOGV(" create MidiFile");
540            p = new MidiFile();
541            break;
542        case VORBIS_PLAYER:
543            LOGV(" create VorbisPlayer");
544            p = new VorbisPlayer();
545            break;
546    }
547    if (p != NULL) {
548        if (p->initCheck() == NO_ERROR) {
549            p->setNotifyCallback(cookie, notifyFunc);
550        } else {
551            p.clear();
552        }
553    }
554    if (p == NULL) {
555        LOGE("Failed to create player object");
556    }
557    return p;
558}
559
560sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
561{
562    // determine if we have the right player type
563    sp<MediaPlayerBase> p = mPlayer;
564    if ((p != NULL) && (p->playerType() != playerType)) {
565        LOGV("delete player");
566        p.clear();
567    }
568    if (p == NULL) {
569        p = android::createPlayer(playerType, this, notify);
570    }
571    return p;
572}
573
574status_t MediaPlayerService::Client::setDataSource(const char *url)
575{
576    LOGV("setDataSource(%s)", url);
577    if (url == NULL)
578        return UNKNOWN_ERROR;
579
580    if (strncmp(url, "content://", 10) == 0) {
581        // get a filedescriptor for the content Uri and
582        // pass it to the setDataSource(fd) method
583
584        String16 url16(url);
585        int fd = android::openContentProviderFile(url16);
586        if (fd < 0)
587        {
588            LOGE("Couldn't open fd for %s", url);
589            return UNKNOWN_ERROR;
590        }
591        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
592        close(fd);
593        return mStatus;
594    } else {
595        player_type playerType = getPlayerType(url);
596        LOGV("player type = %d", playerType);
597
598        // create the right type of player
599        sp<MediaPlayerBase> p = createPlayer(playerType);
600        if (p == NULL) return NO_INIT;
601
602        if (!p->hardwareOutput()) {
603            mAudioOutput = new AudioOutput();
604            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
605        }
606
607        // now set data source
608        LOGV(" setDataSource");
609        mStatus = p->setDataSource(url);
610        if (mStatus == NO_ERROR) mPlayer = p;
611        return mStatus;
612    }
613}
614
615status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
616{
617    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
618    struct stat sb;
619    int ret = fstat(fd, &sb);
620    if (ret != 0) {
621        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
622        return UNKNOWN_ERROR;
623    }
624
625    LOGV("st_dev  = %llu", sb.st_dev);
626    LOGV("st_mode = %u", sb.st_mode);
627    LOGV("st_uid  = %lu", sb.st_uid);
628    LOGV("st_gid  = %lu", sb.st_gid);
629    LOGV("st_size = %llu", sb.st_size);
630
631    if (offset >= sb.st_size) {
632        LOGE("offset error");
633        ::close(fd);
634        return UNKNOWN_ERROR;
635    }
636    if (offset + length > sb.st_size) {
637        length = sb.st_size - offset;
638        LOGV("calculated length = %lld", length);
639    }
640
641    player_type playerType = getPlayerType(fd, offset, length);
642    LOGV("player type = %d", playerType);
643
644    // create the right type of player
645    sp<MediaPlayerBase> p = createPlayer(playerType);
646    if (p == NULL) return NO_INIT;
647
648    if (!p->hardwareOutput()) {
649        mAudioOutput = new AudioOutput();
650        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
651    }
652
653    // now set data source
654    mStatus = p->setDataSource(fd, offset, length);
655    if (mStatus == NO_ERROR) mPlayer = p;
656    return mStatus;
657}
658
659status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
660{
661    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
662    sp<MediaPlayerBase> p = getPlayer();
663    if (p == 0) return UNKNOWN_ERROR;
664    return p->setVideoSurface(surface);
665}
666
667status_t MediaPlayerService::Client::prepareAsync()
668{
669    LOGV("[%d] prepareAsync", mConnId);
670    sp<MediaPlayerBase> p = getPlayer();
671    if (p == 0) return UNKNOWN_ERROR;
672    status_t ret = p->prepareAsync();
673#if CALLBACK_ANTAGONIZER
674    LOGD("start Antagonizer");
675    if (ret == NO_ERROR) mAntagonizer->start();
676#endif
677    return ret;
678}
679
680status_t MediaPlayerService::Client::start()
681{
682    LOGV("[%d] start", mConnId);
683    sp<MediaPlayerBase> p = getPlayer();
684    if (p == 0) return UNKNOWN_ERROR;
685    p->setLooping(mLoop);
686    return p->start();
687}
688
689status_t MediaPlayerService::Client::stop()
690{
691    LOGV("[%d] stop", mConnId);
692    sp<MediaPlayerBase> p = getPlayer();
693    if (p == 0) return UNKNOWN_ERROR;
694    return p->stop();
695}
696
697status_t MediaPlayerService::Client::pause()
698{
699    LOGV("[%d] pause", mConnId);
700    sp<MediaPlayerBase> p = getPlayer();
701    if (p == 0) return UNKNOWN_ERROR;
702    return p->pause();
703}
704
705status_t MediaPlayerService::Client::isPlaying(bool* state)
706{
707    *state = false;
708    sp<MediaPlayerBase> p = getPlayer();
709    if (p == 0) return UNKNOWN_ERROR;
710    *state = p->isPlaying();
711    LOGV("[%d] isPlaying: %d", mConnId, *state);
712    return NO_ERROR;
713}
714
715status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
716{
717    LOGV("getCurrentPosition");
718    sp<MediaPlayerBase> p = getPlayer();
719    if (p == 0) return UNKNOWN_ERROR;
720    status_t ret = p->getCurrentPosition(msec);
721    if (ret == NO_ERROR) {
722        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
723    } else {
724        LOGE("getCurrentPosition returned %d", ret);
725    }
726    return ret;
727}
728
729status_t MediaPlayerService::Client::getDuration(int *msec)
730{
731    LOGV("getDuration");
732    sp<MediaPlayerBase> p = getPlayer();
733    if (p == 0) return UNKNOWN_ERROR;
734    status_t ret = p->getDuration(msec);
735    if (ret == NO_ERROR) {
736        LOGV("[%d] getDuration = %d", mConnId, *msec);
737    } else {
738        LOGE("getDuration returned %d", ret);
739    }
740    return ret;
741}
742
743status_t MediaPlayerService::Client::seekTo(int msec)
744{
745    LOGV("[%d] seekTo(%d)", mConnId, msec);
746    sp<MediaPlayerBase> p = getPlayer();
747    if (p == 0) return UNKNOWN_ERROR;
748    return p->seekTo(msec);
749}
750
751status_t MediaPlayerService::Client::reset()
752{
753    LOGV("[%d] reset", mConnId);
754    sp<MediaPlayerBase> p = getPlayer();
755    if (p == 0) return UNKNOWN_ERROR;
756    return p->reset();
757}
758
759status_t MediaPlayerService::Client::setAudioStreamType(int type)
760{
761    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
762    // TODO: for hardware output, call player instead
763    Mutex::Autolock l(mLock);
764    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
765    return NO_ERROR;
766}
767
768status_t MediaPlayerService::Client::setLooping(int loop)
769{
770    LOGV("[%d] setLooping(%d)", mConnId, loop);
771    mLoop = loop;
772    sp<MediaPlayerBase> p = getPlayer();
773    if (p != 0) return p->setLooping(loop);
774    return NO_ERROR;
775}
776
777status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
778{
779    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
780    // TODO: for hardware output, call player instead
781    Mutex::Autolock l(mLock);
782    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
783    return NO_ERROR;
784}
785
786void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
787{
788    Client* client = static_cast<Client*>(cookie);
789    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
790    client->mClient->notify(msg, ext1, ext2);
791}
792
793#if CALLBACK_ANTAGONIZER
794const int Antagonizer::interval = 10000; // 10 msecs
795
796Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
797    mExit(false), mActive(false), mClient(client), mCb(cb)
798{
799    createThread(callbackThread, this);
800}
801
802void Antagonizer::kill()
803{
804    Mutex::Autolock _l(mLock);
805    mActive = false;
806    mExit = true;
807    mCondition.wait(mLock);
808}
809
810int Antagonizer::callbackThread(void* user)
811{
812    LOGD("Antagonizer started");
813    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
814    while (!p->mExit) {
815        if (p->mActive) {
816            LOGV("send event");
817            p->mCb(p->mClient, 0, 0, 0);
818        }
819        usleep(interval);
820    }
821    Mutex::Autolock _l(p->mLock);
822    p->mCondition.signal();
823    LOGD("Antagonizer stopped");
824    return 0;
825}
826#endif
827
828static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
829
830sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
831{
832    LOGV("decode(%s)", url);
833    sp<MemoryBase> mem;
834    sp<MediaPlayerBase> player;
835
836    // Protect our precious, precious DRMd ringtones by only allowing
837    // decoding of http, but not filesystem paths or content Uris.
838    // If the application wants to decode those, it should open a
839    // filedescriptor for them and use that.
840    if (url != NULL && strncmp(url, "http://", 7) != 0) {
841        LOGD("Can't decode %s by path, use filedescriptor instead", url);
842        return mem;
843    }
844
845    player_type playerType = getPlayerType(url);
846    LOGV("player type = %d", playerType);
847
848    // create the right type of player
849    sp<AudioCache> cache = new AudioCache(url);
850    player = android::createPlayer(playerType, cache.get(), cache->notify);
851    if (player == NULL) goto Exit;
852    if (player->hardwareOutput()) goto Exit;
853
854    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
855
856    // set data source
857    if (player->setDataSource(url) != NO_ERROR) goto Exit;
858
859    LOGV("prepare");
860    player->prepareAsync();
861
862    LOGV("wait for prepare");
863    if (cache->wait() != NO_ERROR) goto Exit;
864
865    LOGV("start");
866    player->start();
867
868    LOGV("wait for playback complete");
869    if (cache->wait() != NO_ERROR) goto Exit;
870
871    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
872    *pSampleRate = cache->sampleRate();
873    *pNumChannels = cache->channelCount();
874    *pFormat = cache->format();
875    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
876
877Exit:
878    if (player != 0) player->reset();
879    return mem;
880}
881
882sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
883{
884    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
885    sp<MemoryBase> mem;
886    sp<MediaPlayerBase> player;
887
888    player_type playerType = getPlayerType(fd, offset, length);
889    LOGV("player type = %d", playerType);
890
891    // create the right type of player
892    sp<AudioCache> cache = new AudioCache("decode_fd");
893    player = android::createPlayer(playerType, cache.get(), cache->notify);
894    if (player == NULL) goto Exit;
895    if (player->hardwareOutput()) goto Exit;
896
897    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
898
899    // set data source
900    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
901
902    LOGV("prepare");
903    player->prepareAsync();
904
905    LOGV("wait for prepare");
906    if (cache->wait() != NO_ERROR) goto Exit;
907
908    LOGV("start");
909    player->start();
910
911    LOGV("wait for playback complete");
912    if (cache->wait() != NO_ERROR) goto Exit;
913
914    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
915    *pSampleRate = cache->sampleRate();
916    *pNumChannels = cache->channelCount();
917    *pFormat = cache->format();
918    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
919
920Exit:
921    if (player != 0) player->reset();
922    ::close(fd);
923    return mem;
924}
925
926#undef LOG_TAG
927#define LOG_TAG "AudioSink"
928MediaPlayerService::AudioOutput::AudioOutput()
929{
930    mTrack = 0;
931    mStreamType = AudioSystem::MUSIC;
932    mLeftVolume = 1.0;
933    mRightVolume = 1.0;
934    mLatency = 0;
935    mMsecsPerFrame = 0;
936    setMinBufferCount();
937}
938
939MediaPlayerService::AudioOutput::~AudioOutput()
940{
941    close();
942}
943
944void MediaPlayerService::AudioOutput::setMinBufferCount()
945{
946    char value[PROPERTY_VALUE_MAX];
947    if (property_get("ro.kernel.qemu", value, 0)) {
948        mIsOnEmulator = true;
949        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
950    }
951}
952
953bool MediaPlayerService::AudioOutput::isOnEmulator()
954{
955    setMinBufferCount();
956    return mIsOnEmulator;
957}
958
959int MediaPlayerService::AudioOutput::getMinBufferCount()
960{
961    setMinBufferCount();
962    return mMinBufferCount;
963}
964
965ssize_t MediaPlayerService::AudioOutput::bufferSize() const
966{
967    if (mTrack == 0) return NO_INIT;
968    return mTrack->frameCount() * frameSize();
969}
970
971ssize_t MediaPlayerService::AudioOutput::frameCount() const
972{
973    if (mTrack == 0) return NO_INIT;
974    return mTrack->frameCount();
975}
976
977ssize_t MediaPlayerService::AudioOutput::channelCount() const
978{
979    if (mTrack == 0) return NO_INIT;
980    return mTrack->channelCount();
981}
982
983ssize_t MediaPlayerService::AudioOutput::frameSize() const
984{
985    if (mTrack == 0) return NO_INIT;
986    return mTrack->frameSize();
987}
988
989uint32_t MediaPlayerService::AudioOutput::latency () const
990{
991    return mLatency;
992}
993
994float MediaPlayerService::AudioOutput::msecsPerFrame() const
995{
996    return mMsecsPerFrame;
997}
998
999status_t MediaPlayerService::AudioOutput::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1000{
1001    // Check argument "bufferCount" against the mininum buffer count
1002    if (bufferCount < mMinBufferCount) {
1003        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1004        bufferCount = mMinBufferCount;
1005
1006    }
1007    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1008    if (mTrack) close();
1009    int afSampleRate;
1010    int afFrameCount;
1011    int frameCount;
1012
1013    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1014        return NO_INIT;
1015    }
1016    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1017        return NO_INIT;
1018    }
1019
1020    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1021    AudioTrack *t = new AudioTrack(mStreamType, sampleRate, format, channelCount, frameCount);
1022    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1023        LOGE("Unable to create audio track");
1024        delete t;
1025        return NO_INIT;
1026    }
1027
1028    LOGV("setVolume");
1029    t->setVolume(mLeftVolume, mRightVolume);
1030    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1031    mLatency = t->latency() + kAudioVideoDelayMs;
1032    mTrack = t;
1033    return NO_ERROR;
1034}
1035
1036void MediaPlayerService::AudioOutput::start()
1037{
1038    LOGV("start");
1039    if (mTrack) {
1040        mTrack->setVolume(mLeftVolume, mRightVolume);
1041        mTrack->start();
1042    }
1043}
1044
1045ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1046{
1047    //LOGV("write(%p, %u)", buffer, size);
1048    if (mTrack) return mTrack->write(buffer, size);
1049    return NO_INIT;
1050}
1051
1052void MediaPlayerService::AudioOutput::stop()
1053{
1054    LOGV("stop");
1055    if (mTrack) mTrack->stop();
1056}
1057
1058void MediaPlayerService::AudioOutput::flush()
1059{
1060    LOGV("flush");
1061    if (mTrack) mTrack->flush();
1062}
1063
1064void MediaPlayerService::AudioOutput::pause()
1065{
1066    LOGV("pause");
1067    if (mTrack) mTrack->pause();
1068}
1069
1070void MediaPlayerService::AudioOutput::close()
1071{
1072    LOGV("close");
1073    delete mTrack;
1074    mTrack = 0;
1075}
1076
1077void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1078{
1079    LOGV("setVolume(%f, %f)", left, right);
1080    mLeftVolume = left;
1081    mRightVolume = right;
1082    if (mTrack) {
1083        mTrack->setVolume(left, right);
1084    }
1085}
1086
1087#undef LOG_TAG
1088#define LOG_TAG "AudioCache"
1089MediaPlayerService::AudioCache::AudioCache(const char* name) :
1090    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1091    mError(NO_ERROR), mCommandComplete(false)
1092{
1093    // create ashmem heap
1094    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1095}
1096
1097uint32_t MediaPlayerService::AudioCache::latency () const
1098{
1099    return 0;
1100}
1101
1102float MediaPlayerService::AudioCache::msecsPerFrame() const
1103{
1104    return mMsecsPerFrame;
1105}
1106
1107status_t MediaPlayerService::AudioCache::open(uint32_t sampleRate, int channelCount, int format, int bufferCount)
1108{
1109    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1110    if (mHeap->getHeapID() < 0) return NO_INIT;
1111    mSampleRate = sampleRate;
1112    mChannelCount = (uint16_t)channelCount;
1113    mFormat = (uint16_t)format;
1114    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1115    return NO_ERROR;
1116}
1117
1118ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1119{
1120    LOGV("write(%p, %u)", buffer, size);
1121    if ((buffer == 0) || (size == 0)) return size;
1122
1123    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1124    if (p == NULL) return NO_INIT;
1125    p += mSize;
1126    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1127    if (mSize + size > mHeap->getSize()) {
1128        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1129        size = mHeap->getSize() - mSize;
1130    }
1131    memcpy(p, buffer, size);
1132    mSize += size;
1133    return size;
1134}
1135
1136// call with lock held
1137status_t MediaPlayerService::AudioCache::wait()
1138{
1139    Mutex::Autolock lock(mLock);
1140    if (!mCommandComplete) {
1141        mSignal.wait(mLock);
1142    }
1143    mCommandComplete = false;
1144
1145    if (mError == NO_ERROR) {
1146        LOGV("wait - success");
1147    } else {
1148        LOGV("wait - error");
1149    }
1150    return mError;
1151}
1152
1153void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1154{
1155    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1156    AudioCache* p = static_cast<AudioCache*>(cookie);
1157
1158    // ignore buffering messages
1159    if (msg == MEDIA_BUFFERING_UPDATE) return;
1160
1161    // set error condition
1162    if (msg == MEDIA_ERROR) {
1163        LOGE("Error %d, %d occurred", ext1, ext2);
1164        p->mError = ext1;
1165    }
1166
1167    // wake up thread
1168    LOGV("wakeup thread");
1169    p->mCommandComplete = true;
1170    p->mSignal.signal();
1171}
1172
1173}; // namespace android
1174