MediaPlayerService.cpp revision f933441648ef6a71dee783d733aac17b9508b452 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <dirent.h>
27#include <unistd.h>
28
29#include <string.h>
30
31#include <cutils/atomic.h>
32#include <cutils/properties.h> // for property_get
33
34#include <utils/misc.h>
35
36#include <android_runtime/ActivityManager.h>
37
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46#include <cutils/properties.h>
47
48#include <media/MediaPlayerInterface.h>
49#include <media/mediarecorder.h>
50#include <media/MediaMetadataRetrieverInterface.h>
51#include <media/Metadata.h>
52#include <media/AudioTrack.h>
53
54#include "MediaRecorderClient.h"
55#include "MediaPlayerService.h"
56#include "MetadataRetrieverClient.h"
57
58#include "MidiFile.h"
59#include "TestPlayerStub.h"
60#include "StagefrightPlayer.h"
61#include "nuplayer/NuPlayerDriver.h"
62
63#include <OMX.h>
64
65/* desktop Linux needs a little help with gettid() */
66#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
67#define __KERNEL__
68# include <linux/unistd.h>
69#ifdef _syscall0
70_syscall0(pid_t,gettid)
71#else
72pid_t gettid() { return syscall(__NR_gettid);}
73#endif
74#undef __KERNEL__
75#endif
76
77namespace {
78using android::media::Metadata;
79using android::status_t;
80using android::OK;
81using android::BAD_VALUE;
82using android::NOT_ENOUGH_DATA;
83using android::Parcel;
84
85// Max number of entries in the filter.
86const int kMaxFilterSize = 64;  // I pulled that out of thin air.
87
88// FIXME: Move all the metadata related function in the Metadata.cpp
89
90
91// Unmarshall a filter from a Parcel.
92// Filter format in a parcel:
93//
94//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
95// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
96// |                       number of entries (n)                   |
97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
98// |                       metadata type 1                         |
99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
100// |                       metadata type 2                         |
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102//  ....
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type n                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106//
107// @param p Parcel that should start with a filter.
108// @param[out] filter On exit contains the list of metadata type to be
109//                    filtered.
110// @param[out] status On exit contains the status code to be returned.
111// @return true if the parcel starts with a valid filter.
112bool unmarshallFilter(const Parcel& p,
113                      Metadata::Filter *filter,
114                      status_t *status)
115{
116    int32_t val;
117    if (p.readInt32(&val) != OK)
118    {
119        LOGE("Failed to read filter's length");
120        *status = NOT_ENOUGH_DATA;
121        return false;
122    }
123
124    if( val > kMaxFilterSize || val < 0)
125    {
126        LOGE("Invalid filter len %d", val);
127        *status = BAD_VALUE;
128        return false;
129    }
130
131    const size_t num = val;
132
133    filter->clear();
134    filter->setCapacity(num);
135
136    size_t size = num * sizeof(Metadata::Type);
137
138
139    if (p.dataAvail() < size)
140    {
141        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
142        *status = NOT_ENOUGH_DATA;
143        return false;
144    }
145
146    const Metadata::Type *data =
147            static_cast<const Metadata::Type*>(p.readInplace(size));
148
149    if (NULL == data)
150    {
151        LOGE("Filter had no data");
152        *status = BAD_VALUE;
153        return false;
154    }
155
156    // TODO: The stl impl of vector would be more efficient here
157    // because it degenerates into a memcpy on pod types. Try to
158    // replace later or use stl::set.
159    for (size_t i = 0; i < num; ++i)
160    {
161        filter->add(*data);
162        ++data;
163    }
164    *status = OK;
165    return true;
166}
167
168// @param filter Of metadata type.
169// @param val To be searched.
170// @return true if a match was found.
171bool findMetadata(const Metadata::Filter& filter, const int32_t val)
172{
173    // Deal with empty and ANY right away
174    if (filter.isEmpty()) return false;
175    if (filter[0] == Metadata::kAny) return true;
176
177    return filter.indexOf(val) >= 0;
178}
179
180}  // anonymous namespace
181
182
183namespace android {
184
185// TODO: Temp hack until we can register players
186typedef struct {
187    const char *extension;
188    const player_type playertype;
189} extmap;
190extmap FILE_EXTS [] =  {
191        {".mid", SONIVOX_PLAYER},
192        {".midi", SONIVOX_PLAYER},
193        {".smf", SONIVOX_PLAYER},
194        {".xmf", SONIVOX_PLAYER},
195        {".imy", SONIVOX_PLAYER},
196        {".rtttl", SONIVOX_PLAYER},
197        {".rtx", SONIVOX_PLAYER},
198        {".ota", SONIVOX_PLAYER},
199};
200
201// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
202/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
203/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
204
205void MediaPlayerService::instantiate() {
206    defaultServiceManager()->addService(
207            String16("media.player"), new MediaPlayerService());
208}
209
210MediaPlayerService::MediaPlayerService()
211{
212    LOGV("MediaPlayerService created");
213    mNextConnId = 1;
214}
215
216MediaPlayerService::~MediaPlayerService()
217{
218    LOGV("MediaPlayerService destroyed");
219}
220
221sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
222{
223    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
224    wp<MediaRecorderClient> w = recorder;
225    Mutex::Autolock lock(mLock);
226    mMediaRecorderClients.add(w);
227    LOGV("Create new media recorder client from pid %d", pid);
228    return recorder;
229}
230
231void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
232{
233    Mutex::Autolock lock(mLock);
234    mMediaRecorderClients.remove(client);
235    LOGV("Delete media recorder client");
236}
237
238sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
239{
240    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
241    LOGV("Create new media retriever from pid %d", pid);
242    return retriever;
243}
244
245sp<IMediaPlayer> MediaPlayerService::create(
246        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
247        const KeyedVector<String8, String8> *headers, int audioSessionId)
248{
249    int32_t connId = android_atomic_inc(&mNextConnId);
250    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
251    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
252            connId, pid, url, connId, audioSessionId);
253    if (NO_ERROR != c->setDataSource(url, headers))
254    {
255        c.clear();
256        return c;
257    }
258    wp<Client> w = c;
259    Mutex::Autolock lock(mLock);
260    mClients.add(w);
261    return c;
262}
263
264sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
265        int fd, int64_t offset, int64_t length, int audioSessionId)
266{
267    int32_t connId = android_atomic_inc(&mNextConnId);
268    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
269    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
270            connId, pid, fd, offset, length, audioSessionId);
271    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
272        c.clear();
273    } else {
274        wp<Client> w = c;
275        Mutex::Autolock lock(mLock);
276        mClients.add(w);
277    }
278    ::close(fd);
279    return c;
280}
281
282sp<IMediaPlayer> MediaPlayerService::create(
283        pid_t pid, const sp<IMediaPlayerClient> &client,
284        const sp<IStreamSource> &source, int audioSessionId) {
285    int32_t connId = android_atomic_inc(&mNextConnId);
286    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
287
288    LOGV("Create new client(%d) from pid %d, audioSessionId=%d",
289         connId, pid, audioSessionId);
290
291    if (OK != c->setDataSource(source)) {
292        c.clear();
293    } else {
294        wp<Client> w = c;
295        Mutex::Autolock lock(mLock);
296        mClients.add(w);
297    }
298
299    return c;
300}
301
302sp<IOMX> MediaPlayerService::getOMX() {
303    Mutex::Autolock autoLock(mLock);
304
305    if (mOMX.get() == NULL) {
306        mOMX = new OMX;
307    }
308
309    return mOMX;
310}
311
312status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
313{
314    const size_t SIZE = 256;
315    char buffer[SIZE];
316    String8 result;
317
318    result.append(" AudioCache\n");
319    if (mHeap != 0) {
320        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
321                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
322        result.append(buffer);
323    }
324    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
325            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
326    result.append(buffer);
327    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
328            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
329    result.append(buffer);
330    ::write(fd, result.string(), result.size());
331    return NO_ERROR;
332}
333
334status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
335{
336    const size_t SIZE = 256;
337    char buffer[SIZE];
338    String8 result;
339
340    result.append(" AudioOutput\n");
341    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
342            mStreamType, mLeftVolume, mRightVolume);
343    result.append(buffer);
344    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
345            mMsecsPerFrame, mLatency);
346    result.append(buffer);
347    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
348            mAuxEffectId, mSendLevel);
349    result.append(buffer);
350
351    ::write(fd, result.string(), result.size());
352    if (mTrack != 0) {
353        mTrack->dump(fd, args);
354    }
355    return NO_ERROR;
356}
357
358status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
359{
360    const size_t SIZE = 256;
361    char buffer[SIZE];
362    String8 result;
363    result.append(" Client\n");
364    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
365            mPid, mConnId, mStatus, mLoop?"true": "false");
366    result.append(buffer);
367    write(fd, result.string(), result.size());
368    if (mAudioOutput != 0) {
369        mAudioOutput->dump(fd, args);
370    }
371    write(fd, "\n", 1);
372    return NO_ERROR;
373}
374
375static int myTid() {
376#ifdef HAVE_GETTID
377    return gettid();
378#else
379    return getpid();
380#endif
381}
382
383#if defined(__arm__)
384extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
385        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
386extern "C" void free_malloc_leak_info(uint8_t* info);
387
388// Use the String-class below instead of String8 to allocate all memory
389// beforehand and not reenter the heap while we are examining it...
390struct MyString8 {
391    static const size_t MAX_SIZE = 256 * 1024;
392
393    MyString8()
394        : mPtr((char *)malloc(MAX_SIZE)) {
395        *mPtr = '\0';
396    }
397
398    ~MyString8() {
399        free(mPtr);
400    }
401
402    void append(const char *s) {
403        strcat(mPtr, s);
404    }
405
406    const char *string() const {
407        return mPtr;
408    }
409
410    size_t size() const {
411        return strlen(mPtr);
412    }
413
414private:
415    char *mPtr;
416
417    MyString8(const MyString8 &);
418    MyString8 &operator=(const MyString8 &);
419};
420
421void memStatus(int fd, const Vector<String16>& args)
422{
423    const size_t SIZE = 256;
424    char buffer[SIZE];
425    MyString8 result;
426
427    typedef struct {
428        size_t size;
429        size_t dups;
430        intptr_t * backtrace;
431    } AllocEntry;
432
433    uint8_t *info = NULL;
434    size_t overallSize = 0;
435    size_t infoSize = 0;
436    size_t totalMemory = 0;
437    size_t backtraceSize = 0;
438
439    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
440    if (info) {
441        uint8_t *ptr = info;
442        size_t count = overallSize / infoSize;
443
444        snprintf(buffer, SIZE, " Allocation count %i\n", count);
445        result.append(buffer);
446        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
447        result.append(buffer);
448
449        AllocEntry * entries = new AllocEntry[count];
450
451        for (size_t i = 0; i < count; i++) {
452            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
453            AllocEntry *e = &entries[i];
454
455            e->size = *reinterpret_cast<size_t *>(ptr);
456            ptr += sizeof(size_t);
457
458            e->dups = *reinterpret_cast<size_t *>(ptr);
459            ptr += sizeof(size_t);
460
461            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
462            ptr += sizeof(intptr_t) * backtraceSize;
463        }
464
465        // Now we need to sort the entries.  They come sorted by size but
466        // not by stack trace which causes problems using diff.
467        bool moved;
468        do {
469            moved = false;
470            for (size_t i = 0; i < (count - 1); i++) {
471                AllocEntry *e1 = &entries[i];
472                AllocEntry *e2 = &entries[i+1];
473
474                bool swap = e1->size < e2->size;
475                if (e1->size == e2->size) {
476                    for(size_t j = 0; j < backtraceSize; j++) {
477                        if (e1->backtrace[j] == e2->backtrace[j]) {
478                            continue;
479                        }
480                        swap = e1->backtrace[j] < e2->backtrace[j];
481                        break;
482                    }
483                }
484                if (swap) {
485                    AllocEntry t = entries[i];
486                    entries[i] = entries[i+1];
487                    entries[i+1] = t;
488                    moved = true;
489                }
490            }
491        } while (moved);
492
493        for (size_t i = 0; i < count; i++) {
494            AllocEntry *e = &entries[i];
495
496            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
497            result.append(buffer);
498            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
499                if (ct) {
500                    result.append(", ");
501                }
502                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
503                result.append(buffer);
504            }
505            result.append("\n");
506        }
507
508        delete[] entries;
509        free_malloc_leak_info(info);
510    }
511
512    write(fd, result.string(), result.size());
513}
514#endif
515
516status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
517{
518    const size_t SIZE = 256;
519    char buffer[SIZE];
520    String8 result;
521    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
522        snprintf(buffer, SIZE, "Permission Denial: "
523                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
524                IPCThreadState::self()->getCallingPid(),
525                IPCThreadState::self()->getCallingUid());
526        result.append(buffer);
527    } else {
528        Mutex::Autolock lock(mLock);
529        for (int i = 0, n = mClients.size(); i < n; ++i) {
530            sp<Client> c = mClients[i].promote();
531            if (c != 0) c->dump(fd, args);
532        }
533        if (mMediaRecorderClients.size() == 0) {
534                result.append(" No media recorder client\n\n");
535        } else {
536            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
537                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
538                snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
539                result.append(buffer);
540                write(fd, result.string(), result.size());
541                result = "\n";
542                c->dump(fd, args);
543            }
544        }
545
546        result.append(" Files opened and/or mapped:\n");
547        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
548        FILE *f = fopen(buffer, "r");
549        if (f) {
550            while (!feof(f)) {
551                fgets(buffer, SIZE, f);
552                if (strstr(buffer, " /mnt/sdcard/") ||
553                    strstr(buffer, " /system/sounds/") ||
554                    strstr(buffer, " /data/") ||
555                    strstr(buffer, " /system/media/")) {
556                    result.append("  ");
557                    result.append(buffer);
558                }
559            }
560            fclose(f);
561        } else {
562            result.append("couldn't open ");
563            result.append(buffer);
564            result.append("\n");
565        }
566
567        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
568        DIR *d = opendir(buffer);
569        if (d) {
570            struct dirent *ent;
571            while((ent = readdir(d)) != NULL) {
572                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
573                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
574                    struct stat s;
575                    if (lstat(buffer, &s) == 0) {
576                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
577                            char linkto[256];
578                            int len = readlink(buffer, linkto, sizeof(linkto));
579                            if(len > 0) {
580                                if(len > 255) {
581                                    linkto[252] = '.';
582                                    linkto[253] = '.';
583                                    linkto[254] = '.';
584                                    linkto[255] = 0;
585                                } else {
586                                    linkto[len] = 0;
587                                }
588                                if (strstr(linkto, "/mnt/sdcard/") == linkto ||
589                                    strstr(linkto, "/system/sounds/") == linkto ||
590                                    strstr(linkto, "/data/") == linkto ||
591                                    strstr(linkto, "/system/media/") == linkto) {
592                                    result.append("  ");
593                                    result.append(buffer);
594                                    result.append(" -> ");
595                                    result.append(linkto);
596                                    result.append("\n");
597                                }
598                            }
599                        } else {
600                            result.append("  unexpected type for ");
601                            result.append(buffer);
602                            result.append("\n");
603                        }
604                    }
605                }
606            }
607            closedir(d);
608        } else {
609            result.append("couldn't open ");
610            result.append(buffer);
611            result.append("\n");
612        }
613
614#if defined(__arm__)
615        bool dumpMem = false;
616        for (size_t i = 0; i < args.size(); i++) {
617            if (args[i] == String16("-m")) {
618                dumpMem = true;
619            }
620        }
621        if (dumpMem) {
622            memStatus(fd, args);
623        }
624#endif
625    }
626    write(fd, result.string(), result.size());
627    return NO_ERROR;
628}
629
630void MediaPlayerService::removeClient(wp<Client> client)
631{
632    Mutex::Autolock lock(mLock);
633    mClients.remove(client);
634}
635
636MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
637        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
638{
639    LOGV("Client(%d) constructor", connId);
640    mPid = pid;
641    mConnId = connId;
642    mService = service;
643    mClient = client;
644    mLoop = false;
645    mStatus = NO_INIT;
646    mAudioSessionId = audioSessionId;
647
648#if CALLBACK_ANTAGONIZER
649    LOGD("create Antagonizer");
650    mAntagonizer = new Antagonizer(notify, this);
651#endif
652}
653
654MediaPlayerService::Client::~Client()
655{
656    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
657    mAudioOutput.clear();
658    wp<Client> client(this);
659    disconnect();
660    mService->removeClient(client);
661}
662
663void MediaPlayerService::Client::disconnect()
664{
665    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
666    // grab local reference and clear main reference to prevent future
667    // access to object
668    sp<MediaPlayerBase> p;
669    {
670        Mutex::Autolock l(mLock);
671        p = mPlayer;
672    }
673    mClient.clear();
674
675    mPlayer.clear();
676
677    // clear the notification to prevent callbacks to dead client
678    // and reset the player. We assume the player will serialize
679    // access to itself if necessary.
680    if (p != 0) {
681        p->setNotifyCallback(0, 0);
682#if CALLBACK_ANTAGONIZER
683        LOGD("kill Antagonizer");
684        mAntagonizer->kill();
685#endif
686        p->reset();
687    }
688
689    IPCThreadState::self()->flushCommands();
690}
691
692static player_type getDefaultPlayerType() {
693    return STAGEFRIGHT_PLAYER;
694}
695
696player_type getPlayerType(int fd, int64_t offset, int64_t length)
697{
698    char buf[20];
699    lseek(fd, offset, SEEK_SET);
700    read(fd, buf, sizeof(buf));
701    lseek(fd, offset, SEEK_SET);
702
703    long ident = *((long*)buf);
704
705    // Ogg vorbis?
706    if (ident == 0x5367674f) // 'OggS'
707        return STAGEFRIGHT_PLAYER;
708
709    // Some kind of MIDI?
710    EAS_DATA_HANDLE easdata;
711    if (EAS_Init(&easdata) == EAS_SUCCESS) {
712        EAS_FILE locator;
713        locator.path = NULL;
714        locator.fd = fd;
715        locator.offset = offset;
716        locator.length = length;
717        EAS_HANDLE  eashandle;
718        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
719            EAS_CloseFile(easdata, eashandle);
720            EAS_Shutdown(easdata);
721            return SONIVOX_PLAYER;
722        }
723        EAS_Shutdown(easdata);
724    }
725
726    return getDefaultPlayerType();
727}
728
729player_type getPlayerType(const char* url)
730{
731    if (TestPlayerStub::canBeUsed(url)) {
732        return TEST_PLAYER;
733    }
734
735    // use MidiFile for MIDI extensions
736    int lenURL = strlen(url);
737    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
738        int len = strlen(FILE_EXTS[i].extension);
739        int start = lenURL - len;
740        if (start > 0) {
741            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
742                return FILE_EXTS[i].playertype;
743            }
744        }
745    }
746
747    return getDefaultPlayerType();
748}
749
750static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
751        notify_callback_f notifyFunc)
752{
753    sp<MediaPlayerBase> p;
754    switch (playerType) {
755        case SONIVOX_PLAYER:
756            LOGV(" create MidiFile");
757            p = new MidiFile();
758            break;
759        case STAGEFRIGHT_PLAYER:
760            LOGV(" create StagefrightPlayer");
761            p = new StagefrightPlayer;
762            break;
763        case NU_PLAYER:
764            LOGV(" create NuPlayer");
765            p = new NuPlayerDriver;
766            break;
767        case TEST_PLAYER:
768            LOGV("Create Test Player stub");
769            p = new TestPlayerStub();
770            break;
771        default:
772            LOGE("Unknown player type: %d", playerType);
773            return NULL;
774    }
775    if (p != NULL) {
776        if (p->initCheck() == NO_ERROR) {
777            p->setNotifyCallback(cookie, notifyFunc);
778        } else {
779            p.clear();
780        }
781    }
782    if (p == NULL) {
783        LOGE("Failed to create player object");
784    }
785    return p;
786}
787
788sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
789{
790    // determine if we have the right player type
791    sp<MediaPlayerBase> p = mPlayer;
792    if ((p != NULL) && (p->playerType() != playerType)) {
793        LOGV("delete player");
794        p.clear();
795    }
796    if (p == NULL) {
797        p = android::createPlayer(playerType, this, notify);
798    }
799    return p;
800}
801
802status_t MediaPlayerService::Client::setDataSource(
803        const char *url, const KeyedVector<String8, String8> *headers)
804{
805    LOGV("setDataSource(%s)", url);
806    if (url == NULL)
807        return UNKNOWN_ERROR;
808
809    if (strncmp(url, "content://", 10) == 0) {
810        // get a filedescriptor for the content Uri and
811        // pass it to the setDataSource(fd) method
812
813        String16 url16(url);
814        int fd = android::openContentProviderFile(url16);
815        if (fd < 0)
816        {
817            LOGE("Couldn't open fd for %s", url);
818            return UNKNOWN_ERROR;
819        }
820        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
821        close(fd);
822        return mStatus;
823    } else {
824        player_type playerType = getPlayerType(url);
825        LOGV("player type = %d", playerType);
826
827        // create the right type of player
828        sp<MediaPlayerBase> p = createPlayer(playerType);
829        if (p == NULL) return NO_INIT;
830
831        if (!p->hardwareOutput()) {
832            mAudioOutput = new AudioOutput(mAudioSessionId);
833            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
834        }
835
836        // now set data source
837        LOGV(" setDataSource");
838        mStatus = p->setDataSource(url, headers);
839        if (mStatus == NO_ERROR) {
840            mPlayer = p;
841        } else {
842            LOGE("  error: %d", mStatus);
843        }
844        return mStatus;
845    }
846}
847
848status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
849{
850    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
851    struct stat sb;
852    int ret = fstat(fd, &sb);
853    if (ret != 0) {
854        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
855        return UNKNOWN_ERROR;
856    }
857
858    LOGV("st_dev  = %llu", sb.st_dev);
859    LOGV("st_mode = %u", sb.st_mode);
860    LOGV("st_uid  = %lu", sb.st_uid);
861    LOGV("st_gid  = %lu", sb.st_gid);
862    LOGV("st_size = %llu", sb.st_size);
863
864    if (offset >= sb.st_size) {
865        LOGE("offset error");
866        ::close(fd);
867        return UNKNOWN_ERROR;
868    }
869    if (offset + length > sb.st_size) {
870        length = sb.st_size - offset;
871        LOGV("calculated length = %lld", length);
872    }
873
874    player_type playerType = getPlayerType(fd, offset, length);
875    LOGV("player type = %d", playerType);
876
877    // create the right type of player
878    sp<MediaPlayerBase> p = createPlayer(playerType);
879    if (p == NULL) return NO_INIT;
880
881    if (!p->hardwareOutput()) {
882        mAudioOutput = new AudioOutput(mAudioSessionId);
883        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
884    }
885
886    // now set data source
887    mStatus = p->setDataSource(fd, offset, length);
888    if (mStatus == NO_ERROR) mPlayer = p;
889    return mStatus;
890}
891
892status_t MediaPlayerService::Client::setDataSource(
893        const sp<IStreamSource> &source) {
894    // create the right type of player
895    sp<MediaPlayerBase> p = createPlayer(NU_PLAYER);
896
897    if (p == NULL) {
898        return NO_INIT;
899    }
900
901    if (!p->hardwareOutput()) {
902        mAudioOutput = new AudioOutput(mAudioSessionId);
903        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
904    }
905
906    // now set data source
907    mStatus = p->setDataSource(source);
908
909    if (mStatus == OK) {
910        mPlayer = p;
911    }
912
913    return mStatus;
914}
915
916status_t MediaPlayerService::Client::setVideoSurface(const sp<Surface>& surface)
917{
918    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
919    sp<MediaPlayerBase> p = getPlayer();
920    if (p == 0) return UNKNOWN_ERROR;
921    return p->setVideoSurface(surface);
922}
923
924status_t MediaPlayerService::Client::invoke(const Parcel& request,
925                                            Parcel *reply)
926{
927    sp<MediaPlayerBase> p = getPlayer();
928    if (p == NULL) return UNKNOWN_ERROR;
929    return p->invoke(request, reply);
930}
931
932// This call doesn't need to access the native player.
933status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
934{
935    status_t status;
936    media::Metadata::Filter allow, drop;
937
938    if (unmarshallFilter(filter, &allow, &status) &&
939        unmarshallFilter(filter, &drop, &status)) {
940        Mutex::Autolock lock(mLock);
941
942        mMetadataAllow = allow;
943        mMetadataDrop = drop;
944    }
945    return status;
946}
947
948status_t MediaPlayerService::Client::getMetadata(
949        bool update_only, bool apply_filter, Parcel *reply)
950{
951    sp<MediaPlayerBase> player = getPlayer();
952    if (player == 0) return UNKNOWN_ERROR;
953
954    status_t status;
955    // Placeholder for the return code, updated by the caller.
956    reply->writeInt32(-1);
957
958    media::Metadata::Filter ids;
959
960    // We don't block notifications while we fetch the data. We clear
961    // mMetadataUpdated first so we don't lose notifications happening
962    // during the rest of this call.
963    {
964        Mutex::Autolock lock(mLock);
965        if (update_only) {
966            ids = mMetadataUpdated;
967        }
968        mMetadataUpdated.clear();
969    }
970
971    media::Metadata metadata(reply);
972
973    metadata.appendHeader();
974    status = player->getMetadata(ids, reply);
975
976    if (status != OK) {
977        metadata.resetParcel();
978        LOGE("getMetadata failed %d", status);
979        return status;
980    }
981
982    // FIXME: Implement filtering on the result. Not critical since
983    // filtering takes place on the update notifications already. This
984    // would be when all the metadata are fetch and a filter is set.
985
986    // Everything is fine, update the metadata length.
987    metadata.updateLength();
988    return OK;
989}
990
991status_t MediaPlayerService::Client::prepareAsync()
992{
993    LOGV("[%d] prepareAsync", mConnId);
994    sp<MediaPlayerBase> p = getPlayer();
995    if (p == 0) return UNKNOWN_ERROR;
996    status_t ret = p->prepareAsync();
997#if CALLBACK_ANTAGONIZER
998    LOGD("start Antagonizer");
999    if (ret == NO_ERROR) mAntagonizer->start();
1000#endif
1001    return ret;
1002}
1003
1004status_t MediaPlayerService::Client::start()
1005{
1006    LOGV("[%d] start", mConnId);
1007    sp<MediaPlayerBase> p = getPlayer();
1008    if (p == 0) return UNKNOWN_ERROR;
1009    p->setLooping(mLoop);
1010    return p->start();
1011}
1012
1013status_t MediaPlayerService::Client::stop()
1014{
1015    LOGV("[%d] stop", mConnId);
1016    sp<MediaPlayerBase> p = getPlayer();
1017    if (p == 0) return UNKNOWN_ERROR;
1018    return p->stop();
1019}
1020
1021status_t MediaPlayerService::Client::pause()
1022{
1023    LOGV("[%d] pause", mConnId);
1024    sp<MediaPlayerBase> p = getPlayer();
1025    if (p == 0) return UNKNOWN_ERROR;
1026    return p->pause();
1027}
1028
1029status_t MediaPlayerService::Client::isPlaying(bool* state)
1030{
1031    *state = false;
1032    sp<MediaPlayerBase> p = getPlayer();
1033    if (p == 0) return UNKNOWN_ERROR;
1034    *state = p->isPlaying();
1035    LOGV("[%d] isPlaying: %d", mConnId, *state);
1036    return NO_ERROR;
1037}
1038
1039status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1040{
1041    LOGV("getCurrentPosition");
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    status_t ret = p->getCurrentPosition(msec);
1045    if (ret == NO_ERROR) {
1046        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1047    } else {
1048        LOGE("getCurrentPosition returned %d", ret);
1049    }
1050    return ret;
1051}
1052
1053status_t MediaPlayerService::Client::getDuration(int *msec)
1054{
1055    LOGV("getDuration");
1056    sp<MediaPlayerBase> p = getPlayer();
1057    if (p == 0) return UNKNOWN_ERROR;
1058    status_t ret = p->getDuration(msec);
1059    if (ret == NO_ERROR) {
1060        LOGV("[%d] getDuration = %d", mConnId, *msec);
1061    } else {
1062        LOGE("getDuration returned %d", ret);
1063    }
1064    return ret;
1065}
1066
1067status_t MediaPlayerService::Client::seekTo(int msec)
1068{
1069    LOGV("[%d] seekTo(%d)", mConnId, msec);
1070    sp<MediaPlayerBase> p = getPlayer();
1071    if (p == 0) return UNKNOWN_ERROR;
1072    return p->seekTo(msec);
1073}
1074
1075status_t MediaPlayerService::Client::reset()
1076{
1077    LOGV("[%d] reset", mConnId);
1078    sp<MediaPlayerBase> p = getPlayer();
1079    if (p == 0) return UNKNOWN_ERROR;
1080    return p->reset();
1081}
1082
1083status_t MediaPlayerService::Client::setAudioStreamType(int type)
1084{
1085    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1086    // TODO: for hardware output, call player instead
1087    Mutex::Autolock l(mLock);
1088    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1089    return NO_ERROR;
1090}
1091
1092status_t MediaPlayerService::Client::setLooping(int loop)
1093{
1094    LOGV("[%d] setLooping(%d)", mConnId, loop);
1095    mLoop = loop;
1096    sp<MediaPlayerBase> p = getPlayer();
1097    if (p != 0) return p->setLooping(loop);
1098    return NO_ERROR;
1099}
1100
1101status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1102{
1103    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1104    // TODO: for hardware output, call player instead
1105    Mutex::Autolock l(mLock);
1106    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1107    return NO_ERROR;
1108}
1109
1110status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1111{
1112    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1113    Mutex::Autolock l(mLock);
1114    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1115    return NO_ERROR;
1116}
1117
1118status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1119{
1120    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1121    Mutex::Autolock l(mLock);
1122    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1123    return NO_ERROR;
1124}
1125
1126void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1127{
1128    Client* client = static_cast<Client*>(cookie);
1129
1130    if (MEDIA_INFO == msg &&
1131        MEDIA_INFO_METADATA_UPDATE == ext1) {
1132        const media::Metadata::Type metadata_type = ext2;
1133
1134        if(client->shouldDropMetadata(metadata_type)) {
1135            return;
1136        }
1137
1138        // Update the list of metadata that have changed. getMetadata
1139        // also access mMetadataUpdated and clears it.
1140        client->addNewMetadataUpdate(metadata_type);
1141    }
1142    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1143    client->mClient->notify(msg, ext1, ext2);
1144}
1145
1146
1147bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1148{
1149    Mutex::Autolock lock(mLock);
1150
1151    if (findMetadata(mMetadataDrop, code)) {
1152        return true;
1153    }
1154
1155    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1156        return false;
1157    } else {
1158        return true;
1159    }
1160}
1161
1162
1163void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1164    Mutex::Autolock lock(mLock);
1165    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1166        mMetadataUpdated.add(metadata_type);
1167    }
1168}
1169
1170#if CALLBACK_ANTAGONIZER
1171const int Antagonizer::interval = 10000; // 10 msecs
1172
1173Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1174    mExit(false), mActive(false), mClient(client), mCb(cb)
1175{
1176    createThread(callbackThread, this);
1177}
1178
1179void Antagonizer::kill()
1180{
1181    Mutex::Autolock _l(mLock);
1182    mActive = false;
1183    mExit = true;
1184    mCondition.wait(mLock);
1185}
1186
1187int Antagonizer::callbackThread(void* user)
1188{
1189    LOGD("Antagonizer started");
1190    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1191    while (!p->mExit) {
1192        if (p->mActive) {
1193            LOGV("send event");
1194            p->mCb(p->mClient, 0, 0, 0);
1195        }
1196        usleep(interval);
1197    }
1198    Mutex::Autolock _l(p->mLock);
1199    p->mCondition.signal();
1200    LOGD("Antagonizer stopped");
1201    return 0;
1202}
1203#endif
1204
1205static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1206
1207sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1208{
1209    LOGV("decode(%s)", url);
1210    sp<MemoryBase> mem;
1211    sp<MediaPlayerBase> player;
1212
1213    // Protect our precious, precious DRMd ringtones by only allowing
1214    // decoding of http, but not filesystem paths or content Uris.
1215    // If the application wants to decode those, it should open a
1216    // filedescriptor for them and use that.
1217    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1218        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1219        return mem;
1220    }
1221
1222    player_type playerType = getPlayerType(url);
1223    LOGV("player type = %d", playerType);
1224
1225    // create the right type of player
1226    sp<AudioCache> cache = new AudioCache(url);
1227    player = android::createPlayer(playerType, cache.get(), cache->notify);
1228    if (player == NULL) goto Exit;
1229    if (player->hardwareOutput()) goto Exit;
1230
1231    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1232
1233    // set data source
1234    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1235
1236    LOGV("prepare");
1237    player->prepareAsync();
1238
1239    LOGV("wait for prepare");
1240    if (cache->wait() != NO_ERROR) goto Exit;
1241
1242    LOGV("start");
1243    player->start();
1244
1245    LOGV("wait for playback complete");
1246    if (cache->wait() != NO_ERROR) goto Exit;
1247
1248    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1249    *pSampleRate = cache->sampleRate();
1250    *pNumChannels = cache->channelCount();
1251    *pFormat = cache->format();
1252    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1253
1254Exit:
1255    if (player != 0) player->reset();
1256    return mem;
1257}
1258
1259sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1260{
1261    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1262    sp<MemoryBase> mem;
1263    sp<MediaPlayerBase> player;
1264
1265    player_type playerType = getPlayerType(fd, offset, length);
1266    LOGV("player type = %d", playerType);
1267
1268    // create the right type of player
1269    sp<AudioCache> cache = new AudioCache("decode_fd");
1270    player = android::createPlayer(playerType, cache.get(), cache->notify);
1271    if (player == NULL) goto Exit;
1272    if (player->hardwareOutput()) goto Exit;
1273
1274    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1275
1276    // set data source
1277    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1278
1279    LOGV("prepare");
1280    player->prepareAsync();
1281
1282    LOGV("wait for prepare");
1283    if (cache->wait() != NO_ERROR) goto Exit;
1284
1285    LOGV("start");
1286    player->start();
1287
1288    LOGV("wait for playback complete");
1289    if (cache->wait() != NO_ERROR) goto Exit;
1290
1291    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1292    *pSampleRate = cache->sampleRate();
1293    *pNumChannels = cache->channelCount();
1294    *pFormat = cache->format();
1295    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1296
1297Exit:
1298    if (player != 0) player->reset();
1299    ::close(fd);
1300    return mem;
1301}
1302
1303
1304#undef LOG_TAG
1305#define LOG_TAG "AudioSink"
1306MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1307    : mCallback(NULL),
1308      mCallbackCookie(NULL),
1309      mSessionId(sessionId) {
1310    LOGV("AudioOutput(%d)", sessionId);
1311    mTrack = 0;
1312    mStreamType = AudioSystem::MUSIC;
1313    mLeftVolume = 1.0;
1314    mRightVolume = 1.0;
1315    mLatency = 0;
1316    mMsecsPerFrame = 0;
1317    mAuxEffectId = 0;
1318    mSendLevel = 0.0;
1319    setMinBufferCount();
1320}
1321
1322MediaPlayerService::AudioOutput::~AudioOutput()
1323{
1324    close();
1325}
1326
1327void MediaPlayerService::AudioOutput::setMinBufferCount()
1328{
1329    char value[PROPERTY_VALUE_MAX];
1330    if (property_get("ro.kernel.qemu", value, 0)) {
1331        mIsOnEmulator = true;
1332        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1333    }
1334}
1335
1336bool MediaPlayerService::AudioOutput::isOnEmulator()
1337{
1338    setMinBufferCount();
1339    return mIsOnEmulator;
1340}
1341
1342int MediaPlayerService::AudioOutput::getMinBufferCount()
1343{
1344    setMinBufferCount();
1345    return mMinBufferCount;
1346}
1347
1348ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1349{
1350    if (mTrack == 0) return NO_INIT;
1351    return mTrack->frameCount() * frameSize();
1352}
1353
1354ssize_t MediaPlayerService::AudioOutput::frameCount() const
1355{
1356    if (mTrack == 0) return NO_INIT;
1357    return mTrack->frameCount();
1358}
1359
1360ssize_t MediaPlayerService::AudioOutput::channelCount() const
1361{
1362    if (mTrack == 0) return NO_INIT;
1363    return mTrack->channelCount();
1364}
1365
1366ssize_t MediaPlayerService::AudioOutput::frameSize() const
1367{
1368    if (mTrack == 0) return NO_INIT;
1369    return mTrack->frameSize();
1370}
1371
1372uint32_t MediaPlayerService::AudioOutput::latency () const
1373{
1374    return mLatency;
1375}
1376
1377float MediaPlayerService::AudioOutput::msecsPerFrame() const
1378{
1379    return mMsecsPerFrame;
1380}
1381
1382status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1383{
1384    if (mTrack == 0) return NO_INIT;
1385    return mTrack->getPosition(position);
1386}
1387
1388status_t MediaPlayerService::AudioOutput::open(
1389        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1390        AudioCallback cb, void *cookie)
1391{
1392    mCallback = cb;
1393    mCallbackCookie = cookie;
1394
1395    // Check argument "bufferCount" against the mininum buffer count
1396    if (bufferCount < mMinBufferCount) {
1397        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1398        bufferCount = mMinBufferCount;
1399
1400    }
1401    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1402    if (mTrack) close();
1403    int afSampleRate;
1404    int afFrameCount;
1405    int frameCount;
1406
1407    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1408        return NO_INIT;
1409    }
1410    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1411        return NO_INIT;
1412    }
1413
1414    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1415
1416    AudioTrack *t;
1417    if (mCallback != NULL) {
1418        t = new AudioTrack(
1419                mStreamType,
1420                sampleRate,
1421                format,
1422                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1423                frameCount,
1424                0 /* flags */,
1425                CallbackWrapper,
1426                this,
1427                0,
1428                mSessionId);
1429    } else {
1430        t = new AudioTrack(
1431                mStreamType,
1432                sampleRate,
1433                format,
1434                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1435                frameCount,
1436                0,
1437                NULL,
1438                NULL,
1439                0,
1440                mSessionId);
1441    }
1442
1443    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1444        LOGE("Unable to create audio track");
1445        delete t;
1446        return NO_INIT;
1447    }
1448
1449    LOGV("setVolume");
1450    t->setVolume(mLeftVolume, mRightVolume);
1451
1452    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1453    mLatency = t->latency();
1454    mTrack = t;
1455
1456    t->setAuxEffectSendLevel(mSendLevel);
1457    return t->attachAuxEffect(mAuxEffectId);;
1458}
1459
1460void MediaPlayerService::AudioOutput::start()
1461{
1462    LOGV("start");
1463    if (mTrack) {
1464        mTrack->setVolume(mLeftVolume, mRightVolume);
1465        mTrack->setAuxEffectSendLevel(mSendLevel);
1466        mTrack->start();
1467    }
1468}
1469
1470
1471
1472ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1473{
1474    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1475
1476    //LOGV("write(%p, %u)", buffer, size);
1477    if (mTrack) {
1478        ssize_t ret = mTrack->write(buffer, size);
1479        return ret;
1480    }
1481    return NO_INIT;
1482}
1483
1484void MediaPlayerService::AudioOutput::stop()
1485{
1486    LOGV("stop");
1487    if (mTrack) mTrack->stop();
1488}
1489
1490void MediaPlayerService::AudioOutput::flush()
1491{
1492    LOGV("flush");
1493    if (mTrack) mTrack->flush();
1494}
1495
1496void MediaPlayerService::AudioOutput::pause()
1497{
1498    LOGV("pause");
1499    if (mTrack) mTrack->pause();
1500}
1501
1502void MediaPlayerService::AudioOutput::close()
1503{
1504    LOGV("close");
1505    delete mTrack;
1506    mTrack = 0;
1507}
1508
1509void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1510{
1511    LOGV("setVolume(%f, %f)", left, right);
1512    mLeftVolume = left;
1513    mRightVolume = right;
1514    if (mTrack) {
1515        mTrack->setVolume(left, right);
1516    }
1517}
1518
1519status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1520{
1521    LOGV("setAuxEffectSendLevel(%f)", level);
1522    mSendLevel = level;
1523    if (mTrack) {
1524        return mTrack->setAuxEffectSendLevel(level);
1525    }
1526    return NO_ERROR;
1527}
1528
1529status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1530{
1531    LOGV("attachAuxEffect(%d)", effectId);
1532    mAuxEffectId = effectId;
1533    if (mTrack) {
1534        return mTrack->attachAuxEffect(effectId);
1535    }
1536    return NO_ERROR;
1537}
1538
1539// static
1540void MediaPlayerService::AudioOutput::CallbackWrapper(
1541        int event, void *cookie, void *info) {
1542    //LOGV("callbackwrapper");
1543    if (event != AudioTrack::EVENT_MORE_DATA) {
1544        return;
1545    }
1546
1547    AudioOutput *me = (AudioOutput *)cookie;
1548    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1549
1550    size_t actualSize = (*me->mCallback)(
1551            me, buffer->raw, buffer->size, me->mCallbackCookie);
1552
1553    buffer->size = actualSize;
1554
1555}
1556
1557int MediaPlayerService::AudioOutput::getSessionId()
1558{
1559    return mSessionId;
1560}
1561
1562#undef LOG_TAG
1563#define LOG_TAG "AudioCache"
1564MediaPlayerService::AudioCache::AudioCache(const char* name) :
1565    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1566    mError(NO_ERROR), mCommandComplete(false)
1567{
1568    // create ashmem heap
1569    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1570}
1571
1572uint32_t MediaPlayerService::AudioCache::latency () const
1573{
1574    return 0;
1575}
1576
1577float MediaPlayerService::AudioCache::msecsPerFrame() const
1578{
1579    return mMsecsPerFrame;
1580}
1581
1582status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1583{
1584    if (position == 0) return BAD_VALUE;
1585    *position = mSize;
1586    return NO_ERROR;
1587}
1588
1589////////////////////////////////////////////////////////////////////////////////
1590
1591struct CallbackThread : public Thread {
1592    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1593                   MediaPlayerBase::AudioSink::AudioCallback cb,
1594                   void *cookie);
1595
1596protected:
1597    virtual ~CallbackThread();
1598
1599    virtual bool threadLoop();
1600
1601private:
1602    wp<MediaPlayerBase::AudioSink> mSink;
1603    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1604    void *mCookie;
1605    void *mBuffer;
1606    size_t mBufferSize;
1607
1608    CallbackThread(const CallbackThread &);
1609    CallbackThread &operator=(const CallbackThread &);
1610};
1611
1612CallbackThread::CallbackThread(
1613        const wp<MediaPlayerBase::AudioSink> &sink,
1614        MediaPlayerBase::AudioSink::AudioCallback cb,
1615        void *cookie)
1616    : mSink(sink),
1617      mCallback(cb),
1618      mCookie(cookie),
1619      mBuffer(NULL),
1620      mBufferSize(0) {
1621}
1622
1623CallbackThread::~CallbackThread() {
1624    if (mBuffer) {
1625        free(mBuffer);
1626        mBuffer = NULL;
1627    }
1628}
1629
1630bool CallbackThread::threadLoop() {
1631    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1632    if (sink == NULL) {
1633        return false;
1634    }
1635
1636    if (mBuffer == NULL) {
1637        mBufferSize = sink->bufferSize();
1638        mBuffer = malloc(mBufferSize);
1639    }
1640
1641    size_t actualSize =
1642        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1643
1644    if (actualSize > 0) {
1645        sink->write(mBuffer, actualSize);
1646    }
1647
1648    return true;
1649}
1650
1651////////////////////////////////////////////////////////////////////////////////
1652
1653status_t MediaPlayerService::AudioCache::open(
1654        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1655        AudioCallback cb, void *cookie)
1656{
1657    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1658    if (mHeap->getHeapID() < 0) {
1659        return NO_INIT;
1660    }
1661
1662    mSampleRate = sampleRate;
1663    mChannelCount = (uint16_t)channelCount;
1664    mFormat = (uint16_t)format;
1665    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1666
1667    if (cb != NULL) {
1668        mCallbackThread = new CallbackThread(this, cb, cookie);
1669    }
1670    return NO_ERROR;
1671}
1672
1673void MediaPlayerService::AudioCache::start() {
1674    if (mCallbackThread != NULL) {
1675        mCallbackThread->run("AudioCache callback");
1676    }
1677}
1678
1679void MediaPlayerService::AudioCache::stop() {
1680    if (mCallbackThread != NULL) {
1681        mCallbackThread->requestExitAndWait();
1682    }
1683}
1684
1685ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1686{
1687    LOGV("write(%p, %u)", buffer, size);
1688    if ((buffer == 0) || (size == 0)) return size;
1689
1690    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1691    if (p == NULL) return NO_INIT;
1692    p += mSize;
1693    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1694    if (mSize + size > mHeap->getSize()) {
1695        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1696        size = mHeap->getSize() - mSize;
1697    }
1698    memcpy(p, buffer, size);
1699    mSize += size;
1700    return size;
1701}
1702
1703// call with lock held
1704status_t MediaPlayerService::AudioCache::wait()
1705{
1706    Mutex::Autolock lock(mLock);
1707    while (!mCommandComplete) {
1708        mSignal.wait(mLock);
1709    }
1710    mCommandComplete = false;
1711
1712    if (mError == NO_ERROR) {
1713        LOGV("wait - success");
1714    } else {
1715        LOGV("wait - error");
1716    }
1717    return mError;
1718}
1719
1720void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1721{
1722    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1723    AudioCache* p = static_cast<AudioCache*>(cookie);
1724
1725    // ignore buffering messages
1726    switch (msg)
1727    {
1728    case MEDIA_ERROR:
1729        LOGE("Error %d, %d occurred", ext1, ext2);
1730        p->mError = ext1;
1731        break;
1732    case MEDIA_PREPARED:
1733        LOGV("prepared");
1734        break;
1735    case MEDIA_PLAYBACK_COMPLETE:
1736        LOGV("playback complete");
1737        break;
1738    default:
1739        LOGV("ignored");
1740        return;
1741    }
1742
1743    // wake up thread
1744    Mutex::Autolock lock(p->mLock);
1745    p->mCommandComplete = true;
1746    p->mSignal.signal();
1747}
1748
1749int MediaPlayerService::AudioCache::getSessionId()
1750{
1751    return 0;
1752}
1753
1754} // namespace android
1755