MediaPlayerService.cpp revision ed8d14f6a934072cd012992c4ef16990a54baa9a 
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    if (!strncasecmp("http://", url, 7)) {
736        size_t len = strlen(url);
737        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
738            return NU_PLAYER;
739        }
740
741        if (strstr(url,"m3u8")) {
742            return NU_PLAYER;
743        }
744    }
745
746    // use MidiFile for MIDI extensions
747    int lenURL = strlen(url);
748    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
749        int len = strlen(FILE_EXTS[i].extension);
750        int start = lenURL - len;
751        if (start > 0) {
752            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
753                return FILE_EXTS[i].playertype;
754            }
755        }
756    }
757
758    return getDefaultPlayerType();
759}
760
761static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
762        notify_callback_f notifyFunc)
763{
764    sp<MediaPlayerBase> p;
765    switch (playerType) {
766        case SONIVOX_PLAYER:
767            LOGV(" create MidiFile");
768            p = new MidiFile();
769            break;
770        case STAGEFRIGHT_PLAYER:
771            LOGV(" create StagefrightPlayer");
772            p = new StagefrightPlayer;
773            break;
774        case NU_PLAYER:
775            LOGV(" create NuPlayer");
776            p = new NuPlayerDriver;
777            break;
778        case TEST_PLAYER:
779            LOGV("Create Test Player stub");
780            p = new TestPlayerStub();
781            break;
782        default:
783            LOGE("Unknown player type: %d", playerType);
784            return NULL;
785    }
786    if (p != NULL) {
787        if (p->initCheck() == NO_ERROR) {
788            p->setNotifyCallback(cookie, notifyFunc);
789        } else {
790            p.clear();
791        }
792    }
793    if (p == NULL) {
794        LOGE("Failed to create player object");
795    }
796    return p;
797}
798
799sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
800{
801    // determine if we have the right player type
802    sp<MediaPlayerBase> p = mPlayer;
803    if ((p != NULL) && (p->playerType() != playerType)) {
804        LOGV("delete player");
805        p.clear();
806    }
807    if (p == NULL) {
808        p = android::createPlayer(playerType, this, notify);
809    }
810    return p;
811}
812
813status_t MediaPlayerService::Client::setDataSource(
814        const char *url, const KeyedVector<String8, String8> *headers)
815{
816    LOGV("setDataSource(%s)", url);
817    if (url == NULL)
818        return UNKNOWN_ERROR;
819
820    if (strncmp(url, "content://", 10) == 0) {
821        // get a filedescriptor for the content Uri and
822        // pass it to the setDataSource(fd) method
823
824        String16 url16(url);
825        int fd = android::openContentProviderFile(url16);
826        if (fd < 0)
827        {
828            LOGE("Couldn't open fd for %s", url);
829            return UNKNOWN_ERROR;
830        }
831        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
832        close(fd);
833        return mStatus;
834    } else {
835        player_type playerType = getPlayerType(url);
836        LOGV("player type = %d", playerType);
837
838        // create the right type of player
839        sp<MediaPlayerBase> p = createPlayer(playerType);
840        if (p == NULL) return NO_INIT;
841
842        if (!p->hardwareOutput()) {
843            mAudioOutput = new AudioOutput(mAudioSessionId);
844            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
845        }
846
847        // now set data source
848        LOGV(" setDataSource");
849        mStatus = p->setDataSource(url, headers);
850        if (mStatus == NO_ERROR) {
851            mPlayer = p;
852        } else {
853            LOGE("  error: %d", mStatus);
854        }
855        return mStatus;
856    }
857}
858
859status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
860{
861    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
862    struct stat sb;
863    int ret = fstat(fd, &sb);
864    if (ret != 0) {
865        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
866        return UNKNOWN_ERROR;
867    }
868
869    LOGV("st_dev  = %llu", sb.st_dev);
870    LOGV("st_mode = %u", sb.st_mode);
871    LOGV("st_uid  = %lu", sb.st_uid);
872    LOGV("st_gid  = %lu", sb.st_gid);
873    LOGV("st_size = %llu", sb.st_size);
874
875    if (offset >= sb.st_size) {
876        LOGE("offset error");
877        ::close(fd);
878        return UNKNOWN_ERROR;
879    }
880    if (offset + length > sb.st_size) {
881        length = sb.st_size - offset;
882        LOGV("calculated length = %lld", length);
883    }
884
885    player_type playerType = getPlayerType(fd, offset, length);
886    LOGV("player type = %d", playerType);
887
888    // create the right type of player
889    sp<MediaPlayerBase> p = createPlayer(playerType);
890    if (p == NULL) return NO_INIT;
891
892    if (!p->hardwareOutput()) {
893        mAudioOutput = new AudioOutput(mAudioSessionId);
894        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
895    }
896
897    // now set data source
898    mStatus = p->setDataSource(fd, offset, length);
899    if (mStatus == NO_ERROR) mPlayer = p;
900    return mStatus;
901}
902
903status_t MediaPlayerService::Client::setDataSource(
904        const sp<IStreamSource> &source) {
905    // create the right type of player
906    sp<MediaPlayerBase> p = createPlayer(NU_PLAYER);
907
908    if (p == NULL) {
909        return NO_INIT;
910    }
911
912    if (!p->hardwareOutput()) {
913        mAudioOutput = new AudioOutput(mAudioSessionId);
914        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
915    }
916
917    // now set data source
918    mStatus = p->setDataSource(source);
919
920    if (mStatus == OK) {
921        mPlayer = p;
922    }
923
924    return mStatus;
925}
926
927status_t MediaPlayerService::Client::setVideoSurface(const sp<Surface>& surface)
928{
929    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
930    sp<MediaPlayerBase> p = getPlayer();
931    if (p == 0) return UNKNOWN_ERROR;
932    return p->setVideoSurface(surface);
933}
934
935status_t MediaPlayerService::Client::invoke(const Parcel& request,
936                                            Parcel *reply)
937{
938    sp<MediaPlayerBase> p = getPlayer();
939    if (p == NULL) return UNKNOWN_ERROR;
940    return p->invoke(request, reply);
941}
942
943// This call doesn't need to access the native player.
944status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
945{
946    status_t status;
947    media::Metadata::Filter allow, drop;
948
949    if (unmarshallFilter(filter, &allow, &status) &&
950        unmarshallFilter(filter, &drop, &status)) {
951        Mutex::Autolock lock(mLock);
952
953        mMetadataAllow = allow;
954        mMetadataDrop = drop;
955    }
956    return status;
957}
958
959status_t MediaPlayerService::Client::getMetadata(
960        bool update_only, bool apply_filter, Parcel *reply)
961{
962    sp<MediaPlayerBase> player = getPlayer();
963    if (player == 0) return UNKNOWN_ERROR;
964
965    status_t status;
966    // Placeholder for the return code, updated by the caller.
967    reply->writeInt32(-1);
968
969    media::Metadata::Filter ids;
970
971    // We don't block notifications while we fetch the data. We clear
972    // mMetadataUpdated first so we don't lose notifications happening
973    // during the rest of this call.
974    {
975        Mutex::Autolock lock(mLock);
976        if (update_only) {
977            ids = mMetadataUpdated;
978        }
979        mMetadataUpdated.clear();
980    }
981
982    media::Metadata metadata(reply);
983
984    metadata.appendHeader();
985    status = player->getMetadata(ids, reply);
986
987    if (status != OK) {
988        metadata.resetParcel();
989        LOGE("getMetadata failed %d", status);
990        return status;
991    }
992
993    // FIXME: Implement filtering on the result. Not critical since
994    // filtering takes place on the update notifications already. This
995    // would be when all the metadata are fetch and a filter is set.
996
997    // Everything is fine, update the metadata length.
998    metadata.updateLength();
999    return OK;
1000}
1001
1002status_t MediaPlayerService::Client::prepareAsync()
1003{
1004    LOGV("[%d] prepareAsync", mConnId);
1005    sp<MediaPlayerBase> p = getPlayer();
1006    if (p == 0) return UNKNOWN_ERROR;
1007    status_t ret = p->prepareAsync();
1008#if CALLBACK_ANTAGONIZER
1009    LOGD("start Antagonizer");
1010    if (ret == NO_ERROR) mAntagonizer->start();
1011#endif
1012    return ret;
1013}
1014
1015status_t MediaPlayerService::Client::start()
1016{
1017    LOGV("[%d] start", mConnId);
1018    sp<MediaPlayerBase> p = getPlayer();
1019    if (p == 0) return UNKNOWN_ERROR;
1020    p->setLooping(mLoop);
1021    return p->start();
1022}
1023
1024status_t MediaPlayerService::Client::stop()
1025{
1026    LOGV("[%d] stop", mConnId);
1027    sp<MediaPlayerBase> p = getPlayer();
1028    if (p == 0) return UNKNOWN_ERROR;
1029    return p->stop();
1030}
1031
1032status_t MediaPlayerService::Client::pause()
1033{
1034    LOGV("[%d] pause", mConnId);
1035    sp<MediaPlayerBase> p = getPlayer();
1036    if (p == 0) return UNKNOWN_ERROR;
1037    return p->pause();
1038}
1039
1040status_t MediaPlayerService::Client::isPlaying(bool* state)
1041{
1042    *state = false;
1043    sp<MediaPlayerBase> p = getPlayer();
1044    if (p == 0) return UNKNOWN_ERROR;
1045    *state = p->isPlaying();
1046    LOGV("[%d] isPlaying: %d", mConnId, *state);
1047    return NO_ERROR;
1048}
1049
1050status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1051{
1052    LOGV("getCurrentPosition");
1053    sp<MediaPlayerBase> p = getPlayer();
1054    if (p == 0) return UNKNOWN_ERROR;
1055    status_t ret = p->getCurrentPosition(msec);
1056    if (ret == NO_ERROR) {
1057        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1058    } else {
1059        LOGE("getCurrentPosition returned %d", ret);
1060    }
1061    return ret;
1062}
1063
1064status_t MediaPlayerService::Client::getDuration(int *msec)
1065{
1066    LOGV("getDuration");
1067    sp<MediaPlayerBase> p = getPlayer();
1068    if (p == 0) return UNKNOWN_ERROR;
1069    status_t ret = p->getDuration(msec);
1070    if (ret == NO_ERROR) {
1071        LOGV("[%d] getDuration = %d", mConnId, *msec);
1072    } else {
1073        LOGE("getDuration returned %d", ret);
1074    }
1075    return ret;
1076}
1077
1078status_t MediaPlayerService::Client::seekTo(int msec)
1079{
1080    LOGV("[%d] seekTo(%d)", mConnId, msec);
1081    sp<MediaPlayerBase> p = getPlayer();
1082    if (p == 0) return UNKNOWN_ERROR;
1083    return p->seekTo(msec);
1084}
1085
1086status_t MediaPlayerService::Client::reset()
1087{
1088    LOGV("[%d] reset", mConnId);
1089    sp<MediaPlayerBase> p = getPlayer();
1090    if (p == 0) return UNKNOWN_ERROR;
1091    return p->reset();
1092}
1093
1094status_t MediaPlayerService::Client::setAudioStreamType(int type)
1095{
1096    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1097    // TODO: for hardware output, call player instead
1098    Mutex::Autolock l(mLock);
1099    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1100    return NO_ERROR;
1101}
1102
1103status_t MediaPlayerService::Client::setLooping(int loop)
1104{
1105    LOGV("[%d] setLooping(%d)", mConnId, loop);
1106    mLoop = loop;
1107    sp<MediaPlayerBase> p = getPlayer();
1108    if (p != 0) return p->setLooping(loop);
1109    return NO_ERROR;
1110}
1111
1112status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1113{
1114    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1115    // TODO: for hardware output, call player instead
1116    Mutex::Autolock l(mLock);
1117    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1118    return NO_ERROR;
1119}
1120
1121status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1122{
1123    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1124    Mutex::Autolock l(mLock);
1125    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1126    return NO_ERROR;
1127}
1128
1129status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1130{
1131    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1132    Mutex::Autolock l(mLock);
1133    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1134    return NO_ERROR;
1135}
1136
1137void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1138{
1139    Client* client = static_cast<Client*>(cookie);
1140
1141    if (MEDIA_INFO == msg &&
1142        MEDIA_INFO_METADATA_UPDATE == ext1) {
1143        const media::Metadata::Type metadata_type = ext2;
1144
1145        if(client->shouldDropMetadata(metadata_type)) {
1146            return;
1147        }
1148
1149        // Update the list of metadata that have changed. getMetadata
1150        // also access mMetadataUpdated and clears it.
1151        client->addNewMetadataUpdate(metadata_type);
1152    }
1153    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1154    client->mClient->notify(msg, ext1, ext2);
1155}
1156
1157
1158bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1159{
1160    Mutex::Autolock lock(mLock);
1161
1162    if (findMetadata(mMetadataDrop, code)) {
1163        return true;
1164    }
1165
1166    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1167        return false;
1168    } else {
1169        return true;
1170    }
1171}
1172
1173
1174void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1175    Mutex::Autolock lock(mLock);
1176    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1177        mMetadataUpdated.add(metadata_type);
1178    }
1179}
1180
1181#if CALLBACK_ANTAGONIZER
1182const int Antagonizer::interval = 10000; // 10 msecs
1183
1184Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1185    mExit(false), mActive(false), mClient(client), mCb(cb)
1186{
1187    createThread(callbackThread, this);
1188}
1189
1190void Antagonizer::kill()
1191{
1192    Mutex::Autolock _l(mLock);
1193    mActive = false;
1194    mExit = true;
1195    mCondition.wait(mLock);
1196}
1197
1198int Antagonizer::callbackThread(void* user)
1199{
1200    LOGD("Antagonizer started");
1201    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1202    while (!p->mExit) {
1203        if (p->mActive) {
1204            LOGV("send event");
1205            p->mCb(p->mClient, 0, 0, 0);
1206        }
1207        usleep(interval);
1208    }
1209    Mutex::Autolock _l(p->mLock);
1210    p->mCondition.signal();
1211    LOGD("Antagonizer stopped");
1212    return 0;
1213}
1214#endif
1215
1216static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1217
1218sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1219{
1220    LOGV("decode(%s)", url);
1221    sp<MemoryBase> mem;
1222    sp<MediaPlayerBase> player;
1223
1224    // Protect our precious, precious DRMd ringtones by only allowing
1225    // decoding of http, but not filesystem paths or content Uris.
1226    // If the application wants to decode those, it should open a
1227    // filedescriptor for them and use that.
1228    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1229        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1230        return mem;
1231    }
1232
1233    player_type playerType = getPlayerType(url);
1234    LOGV("player type = %d", playerType);
1235
1236    // create the right type of player
1237    sp<AudioCache> cache = new AudioCache(url);
1238    player = android::createPlayer(playerType, cache.get(), cache->notify);
1239    if (player == NULL) goto Exit;
1240    if (player->hardwareOutput()) goto Exit;
1241
1242    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1243
1244    // set data source
1245    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1246
1247    LOGV("prepare");
1248    player->prepareAsync();
1249
1250    LOGV("wait for prepare");
1251    if (cache->wait() != NO_ERROR) goto Exit;
1252
1253    LOGV("start");
1254    player->start();
1255
1256    LOGV("wait for playback complete");
1257    if (cache->wait() != NO_ERROR) goto Exit;
1258
1259    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1260    *pSampleRate = cache->sampleRate();
1261    *pNumChannels = cache->channelCount();
1262    *pFormat = cache->format();
1263    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1264
1265Exit:
1266    if (player != 0) player->reset();
1267    return mem;
1268}
1269
1270sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1271{
1272    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1273    sp<MemoryBase> mem;
1274    sp<MediaPlayerBase> player;
1275
1276    player_type playerType = getPlayerType(fd, offset, length);
1277    LOGV("player type = %d", playerType);
1278
1279    // create the right type of player
1280    sp<AudioCache> cache = new AudioCache("decode_fd");
1281    player = android::createPlayer(playerType, cache.get(), cache->notify);
1282    if (player == NULL) goto Exit;
1283    if (player->hardwareOutput()) goto Exit;
1284
1285    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1286
1287    // set data source
1288    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1289
1290    LOGV("prepare");
1291    player->prepareAsync();
1292
1293    LOGV("wait for prepare");
1294    if (cache->wait() != NO_ERROR) goto Exit;
1295
1296    LOGV("start");
1297    player->start();
1298
1299    LOGV("wait for playback complete");
1300    if (cache->wait() != NO_ERROR) goto Exit;
1301
1302    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1303    *pSampleRate = cache->sampleRate();
1304    *pNumChannels = cache->channelCount();
1305    *pFormat = cache->format();
1306    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1307
1308Exit:
1309    if (player != 0) player->reset();
1310    ::close(fd);
1311    return mem;
1312}
1313
1314
1315#undef LOG_TAG
1316#define LOG_TAG "AudioSink"
1317MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1318    : mCallback(NULL),
1319      mCallbackCookie(NULL),
1320      mSessionId(sessionId) {
1321    LOGV("AudioOutput(%d)", sessionId);
1322    mTrack = 0;
1323    mStreamType = AudioSystem::MUSIC;
1324    mLeftVolume = 1.0;
1325    mRightVolume = 1.0;
1326    mLatency = 0;
1327    mMsecsPerFrame = 0;
1328    mAuxEffectId = 0;
1329    mSendLevel = 0.0;
1330    setMinBufferCount();
1331}
1332
1333MediaPlayerService::AudioOutput::~AudioOutput()
1334{
1335    close();
1336}
1337
1338void MediaPlayerService::AudioOutput::setMinBufferCount()
1339{
1340    char value[PROPERTY_VALUE_MAX];
1341    if (property_get("ro.kernel.qemu", value, 0)) {
1342        mIsOnEmulator = true;
1343        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1344    }
1345}
1346
1347bool MediaPlayerService::AudioOutput::isOnEmulator()
1348{
1349    setMinBufferCount();
1350    return mIsOnEmulator;
1351}
1352
1353int MediaPlayerService::AudioOutput::getMinBufferCount()
1354{
1355    setMinBufferCount();
1356    return mMinBufferCount;
1357}
1358
1359ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1360{
1361    if (mTrack == 0) return NO_INIT;
1362    return mTrack->frameCount() * frameSize();
1363}
1364
1365ssize_t MediaPlayerService::AudioOutput::frameCount() const
1366{
1367    if (mTrack == 0) return NO_INIT;
1368    return mTrack->frameCount();
1369}
1370
1371ssize_t MediaPlayerService::AudioOutput::channelCount() const
1372{
1373    if (mTrack == 0) return NO_INIT;
1374    return mTrack->channelCount();
1375}
1376
1377ssize_t MediaPlayerService::AudioOutput::frameSize() const
1378{
1379    if (mTrack == 0) return NO_INIT;
1380    return mTrack->frameSize();
1381}
1382
1383uint32_t MediaPlayerService::AudioOutput::latency () const
1384{
1385    return mLatency;
1386}
1387
1388float MediaPlayerService::AudioOutput::msecsPerFrame() const
1389{
1390    return mMsecsPerFrame;
1391}
1392
1393status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1394{
1395    if (mTrack == 0) return NO_INIT;
1396    return mTrack->getPosition(position);
1397}
1398
1399status_t MediaPlayerService::AudioOutput::open(
1400        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1401        AudioCallback cb, void *cookie)
1402{
1403    mCallback = cb;
1404    mCallbackCookie = cookie;
1405
1406    // Check argument "bufferCount" against the mininum buffer count
1407    if (bufferCount < mMinBufferCount) {
1408        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1409        bufferCount = mMinBufferCount;
1410
1411    }
1412    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1413    if (mTrack) close();
1414    int afSampleRate;
1415    int afFrameCount;
1416    int frameCount;
1417
1418    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1419        return NO_INIT;
1420    }
1421    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1422        return NO_INIT;
1423    }
1424
1425    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1426
1427    AudioTrack *t;
1428    if (mCallback != NULL) {
1429        t = new AudioTrack(
1430                mStreamType,
1431                sampleRate,
1432                format,
1433                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1434                frameCount,
1435                0 /* flags */,
1436                CallbackWrapper,
1437                this,
1438                0,
1439                mSessionId);
1440    } else {
1441        t = new AudioTrack(
1442                mStreamType,
1443                sampleRate,
1444                format,
1445                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1446                frameCount,
1447                0,
1448                NULL,
1449                NULL,
1450                0,
1451                mSessionId);
1452    }
1453
1454    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1455        LOGE("Unable to create audio track");
1456        delete t;
1457        return NO_INIT;
1458    }
1459
1460    LOGV("setVolume");
1461    t->setVolume(mLeftVolume, mRightVolume);
1462
1463    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1464    mLatency = t->latency();
1465    mTrack = t;
1466
1467    t->setAuxEffectSendLevel(mSendLevel);
1468    return t->attachAuxEffect(mAuxEffectId);;
1469}
1470
1471void MediaPlayerService::AudioOutput::start()
1472{
1473    LOGV("start");
1474    if (mTrack) {
1475        mTrack->setVolume(mLeftVolume, mRightVolume);
1476        mTrack->setAuxEffectSendLevel(mSendLevel);
1477        mTrack->start();
1478    }
1479}
1480
1481
1482
1483ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1484{
1485    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1486
1487    //LOGV("write(%p, %u)", buffer, size);
1488    if (mTrack) {
1489        ssize_t ret = mTrack->write(buffer, size);
1490        return ret;
1491    }
1492    return NO_INIT;
1493}
1494
1495void MediaPlayerService::AudioOutput::stop()
1496{
1497    LOGV("stop");
1498    if (mTrack) mTrack->stop();
1499}
1500
1501void MediaPlayerService::AudioOutput::flush()
1502{
1503    LOGV("flush");
1504    if (mTrack) mTrack->flush();
1505}
1506
1507void MediaPlayerService::AudioOutput::pause()
1508{
1509    LOGV("pause");
1510    if (mTrack) mTrack->pause();
1511}
1512
1513void MediaPlayerService::AudioOutput::close()
1514{
1515    LOGV("close");
1516    delete mTrack;
1517    mTrack = 0;
1518}
1519
1520void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1521{
1522    LOGV("setVolume(%f, %f)", left, right);
1523    mLeftVolume = left;
1524    mRightVolume = right;
1525    if (mTrack) {
1526        mTrack->setVolume(left, right);
1527    }
1528}
1529
1530status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1531{
1532    LOGV("setAuxEffectSendLevel(%f)", level);
1533    mSendLevel = level;
1534    if (mTrack) {
1535        return mTrack->setAuxEffectSendLevel(level);
1536    }
1537    return NO_ERROR;
1538}
1539
1540status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1541{
1542    LOGV("attachAuxEffect(%d)", effectId);
1543    mAuxEffectId = effectId;
1544    if (mTrack) {
1545        return mTrack->attachAuxEffect(effectId);
1546    }
1547    return NO_ERROR;
1548}
1549
1550// static
1551void MediaPlayerService::AudioOutput::CallbackWrapper(
1552        int event, void *cookie, void *info) {
1553    //LOGV("callbackwrapper");
1554    if (event != AudioTrack::EVENT_MORE_DATA) {
1555        return;
1556    }
1557
1558    AudioOutput *me = (AudioOutput *)cookie;
1559    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1560
1561    size_t actualSize = (*me->mCallback)(
1562            me, buffer->raw, buffer->size, me->mCallbackCookie);
1563
1564    buffer->size = actualSize;
1565
1566}
1567
1568int MediaPlayerService::AudioOutput::getSessionId()
1569{
1570    return mSessionId;
1571}
1572
1573#undef LOG_TAG
1574#define LOG_TAG "AudioCache"
1575MediaPlayerService::AudioCache::AudioCache(const char* name) :
1576    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1577    mError(NO_ERROR), mCommandComplete(false)
1578{
1579    // create ashmem heap
1580    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1581}
1582
1583uint32_t MediaPlayerService::AudioCache::latency () const
1584{
1585    return 0;
1586}
1587
1588float MediaPlayerService::AudioCache::msecsPerFrame() const
1589{
1590    return mMsecsPerFrame;
1591}
1592
1593status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1594{
1595    if (position == 0) return BAD_VALUE;
1596    *position = mSize;
1597    return NO_ERROR;
1598}
1599
1600////////////////////////////////////////////////////////////////////////////////
1601
1602struct CallbackThread : public Thread {
1603    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1604                   MediaPlayerBase::AudioSink::AudioCallback cb,
1605                   void *cookie);
1606
1607protected:
1608    virtual ~CallbackThread();
1609
1610    virtual bool threadLoop();
1611
1612private:
1613    wp<MediaPlayerBase::AudioSink> mSink;
1614    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1615    void *mCookie;
1616    void *mBuffer;
1617    size_t mBufferSize;
1618
1619    CallbackThread(const CallbackThread &);
1620    CallbackThread &operator=(const CallbackThread &);
1621};
1622
1623CallbackThread::CallbackThread(
1624        const wp<MediaPlayerBase::AudioSink> &sink,
1625        MediaPlayerBase::AudioSink::AudioCallback cb,
1626        void *cookie)
1627    : mSink(sink),
1628      mCallback(cb),
1629      mCookie(cookie),
1630      mBuffer(NULL),
1631      mBufferSize(0) {
1632}
1633
1634CallbackThread::~CallbackThread() {
1635    if (mBuffer) {
1636        free(mBuffer);
1637        mBuffer = NULL;
1638    }
1639}
1640
1641bool CallbackThread::threadLoop() {
1642    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1643    if (sink == NULL) {
1644        return false;
1645    }
1646
1647    if (mBuffer == NULL) {
1648        mBufferSize = sink->bufferSize();
1649        mBuffer = malloc(mBufferSize);
1650    }
1651
1652    size_t actualSize =
1653        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1654
1655    if (actualSize > 0) {
1656        sink->write(mBuffer, actualSize);
1657    }
1658
1659    return true;
1660}
1661
1662////////////////////////////////////////////////////////////////////////////////
1663
1664status_t MediaPlayerService::AudioCache::open(
1665        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1666        AudioCallback cb, void *cookie)
1667{
1668    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1669    if (mHeap->getHeapID() < 0) {
1670        return NO_INIT;
1671    }
1672
1673    mSampleRate = sampleRate;
1674    mChannelCount = (uint16_t)channelCount;
1675    mFormat = (uint16_t)format;
1676    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1677
1678    if (cb != NULL) {
1679        mCallbackThread = new CallbackThread(this, cb, cookie);
1680    }
1681    return NO_ERROR;
1682}
1683
1684void MediaPlayerService::AudioCache::start() {
1685    if (mCallbackThread != NULL) {
1686        mCallbackThread->run("AudioCache callback");
1687    }
1688}
1689
1690void MediaPlayerService::AudioCache::stop() {
1691    if (mCallbackThread != NULL) {
1692        mCallbackThread->requestExitAndWait();
1693    }
1694}
1695
1696ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1697{
1698    LOGV("write(%p, %u)", buffer, size);
1699    if ((buffer == 0) || (size == 0)) return size;
1700
1701    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1702    if (p == NULL) return NO_INIT;
1703    p += mSize;
1704    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1705    if (mSize + size > mHeap->getSize()) {
1706        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1707        size = mHeap->getSize() - mSize;
1708    }
1709    memcpy(p, buffer, size);
1710    mSize += size;
1711    return size;
1712}
1713
1714// call with lock held
1715status_t MediaPlayerService::AudioCache::wait()
1716{
1717    Mutex::Autolock lock(mLock);
1718    while (!mCommandComplete) {
1719        mSignal.wait(mLock);
1720    }
1721    mCommandComplete = false;
1722
1723    if (mError == NO_ERROR) {
1724        LOGV("wait - success");
1725    } else {
1726        LOGV("wait - error");
1727    }
1728    return mError;
1729}
1730
1731void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1732{
1733    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1734    AudioCache* p = static_cast<AudioCache*>(cookie);
1735
1736    // ignore buffering messages
1737    switch (msg)
1738    {
1739    case MEDIA_ERROR:
1740        LOGE("Error %d, %d occurred", ext1, ext2);
1741        p->mError = ext1;
1742        break;
1743    case MEDIA_PREPARED:
1744        LOGV("prepared");
1745        break;
1746    case MEDIA_PLAYBACK_COMPLETE:
1747        LOGV("playback complete");
1748        break;
1749    default:
1750        LOGV("ignored");
1751        return;
1752    }
1753
1754    // wake up thread
1755    Mutex::Autolock lock(p->mLock);
1756    p->mCommandComplete = true;
1757    p->mSignal.signal();
1758}
1759
1760int MediaPlayerService::AudioCache::getSessionId()
1761{
1762    return 0;
1763}
1764
1765} // namespace android
1766