MediaPlayerService.cpp revision e2b1028852120bcfded33b8f06f66b780437fe92 
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
62#include <OMX.h>
63
64/* desktop Linux needs a little help with gettid() */
65#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
66#define __KERNEL__
67# include <linux/unistd.h>
68#ifdef _syscall0
69_syscall0(pid_t,gettid)
70#else
71pid_t gettid() { return syscall(__NR_gettid);}
72#endif
73#undef __KERNEL__
74#endif
75
76namespace {
77using android::media::Metadata;
78using android::status_t;
79using android::OK;
80using android::BAD_VALUE;
81using android::NOT_ENOUGH_DATA;
82using android::Parcel;
83
84// Max number of entries in the filter.
85const int kMaxFilterSize = 64;  // I pulled that out of thin air.
86
87// FIXME: Move all the metadata related function in the Metadata.cpp
88
89
90// Unmarshall a filter from a Parcel.
91// Filter format in a parcel:
92//
93//  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
94// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
95// |                       number of entries (n)                   |
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       metadata type 1                         |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 2                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101//  ....
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103// |                       metadata type n                         |
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105//
106// @param p Parcel that should start with a filter.
107// @param[out] filter On exit contains the list of metadata type to be
108//                    filtered.
109// @param[out] status On exit contains the status code to be returned.
110// @return true if the parcel starts with a valid filter.
111bool unmarshallFilter(const Parcel& p,
112                      Metadata::Filter *filter,
113                      status_t *status)
114{
115    int32_t val;
116    if (p.readInt32(&val) != OK)
117    {
118        LOGE("Failed to read filter's length");
119        *status = NOT_ENOUGH_DATA;
120        return false;
121    }
122
123    if( val > kMaxFilterSize || val < 0)
124    {
125        LOGE("Invalid filter len %d", val);
126        *status = BAD_VALUE;
127        return false;
128    }
129
130    const size_t num = val;
131
132    filter->clear();
133    filter->setCapacity(num);
134
135    size_t size = num * sizeof(Metadata::Type);
136
137
138    if (p.dataAvail() < size)
139    {
140        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
141        *status = NOT_ENOUGH_DATA;
142        return false;
143    }
144
145    const Metadata::Type *data =
146            static_cast<const Metadata::Type*>(p.readInplace(size));
147
148    if (NULL == data)
149    {
150        LOGE("Filter had no data");
151        *status = BAD_VALUE;
152        return false;
153    }
154
155    // TODO: The stl impl of vector would be more efficient here
156    // because it degenerates into a memcpy on pod types. Try to
157    // replace later or use stl::set.
158    for (size_t i = 0; i < num; ++i)
159    {
160        filter->add(*data);
161        ++data;
162    }
163    *status = OK;
164    return true;
165}
166
167// @param filter Of metadata type.
168// @param val To be searched.
169// @return true if a match was found.
170bool findMetadata(const Metadata::Filter& filter, const int32_t val)
171{
172    // Deal with empty and ANY right away
173    if (filter.isEmpty()) return false;
174    if (filter[0] == Metadata::kAny) return true;
175
176    return filter.indexOf(val) >= 0;
177}
178
179}  // anonymous namespace
180
181
182namespace android {
183
184// TODO: Temp hack until we can register players
185typedef struct {
186    const char *extension;
187    const player_type playertype;
188} extmap;
189extmap FILE_EXTS [] =  {
190        {".mid", SONIVOX_PLAYER},
191        {".midi", SONIVOX_PLAYER},
192        {".smf", SONIVOX_PLAYER},
193        {".xmf", SONIVOX_PLAYER},
194        {".imy", SONIVOX_PLAYER},
195        {".rtttl", SONIVOX_PLAYER},
196        {".rtx", SONIVOX_PLAYER},
197        {".ota", SONIVOX_PLAYER},
198};
199
200// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
201/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
202/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
203
204void MediaPlayerService::instantiate() {
205    defaultServiceManager()->addService(
206            String16("media.player"), new MediaPlayerService());
207}
208
209MediaPlayerService::MediaPlayerService()
210{
211    LOGV("MediaPlayerService created");
212    mNextConnId = 1;
213}
214
215MediaPlayerService::~MediaPlayerService()
216{
217    LOGV("MediaPlayerService destroyed");
218}
219
220sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
221{
222    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
223    wp<MediaRecorderClient> w = recorder;
224    Mutex::Autolock lock(mLock);
225    mMediaRecorderClients.add(w);
226    LOGV("Create new media recorder client from pid %d", pid);
227    return recorder;
228}
229
230void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
231{
232    Mutex::Autolock lock(mLock);
233    mMediaRecorderClients.remove(client);
234    LOGV("Delete media recorder client");
235}
236
237sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
238{
239    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
240    LOGV("Create new media retriever from pid %d", pid);
241    return retriever;
242}
243
244sp<IMediaPlayer> MediaPlayerService::create(
245        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
246        const KeyedVector<String8, String8> *headers, int audioSessionId)
247{
248    int32_t connId = android_atomic_inc(&mNextConnId);
249    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
250    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
251            connId, pid, url, connId, audioSessionId);
252    if (NO_ERROR != c->setDataSource(url, headers))
253    {
254        c.clear();
255        return c;
256    }
257    wp<Client> w = c;
258    Mutex::Autolock lock(mLock);
259    mClients.add(w);
260    return c;
261}
262
263sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
264        int fd, int64_t offset, int64_t length, int audioSessionId)
265{
266    int32_t connId = android_atomic_inc(&mNextConnId);
267    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
268    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
269            connId, pid, fd, offset, length, audioSessionId);
270    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
271        c.clear();
272    } else {
273        wp<Client> w = c;
274        Mutex::Autolock lock(mLock);
275        mClients.add(w);
276    }
277    ::close(fd);
278    return c;
279}
280
281sp<IMediaPlayer> MediaPlayerService::create(
282        pid_t pid, const sp<IMediaPlayerClient> &client,
283        const sp<IStreamSource> &source, int audioSessionId) {
284    int32_t connId = android_atomic_inc(&mNextConnId);
285    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
286
287    LOGV("Create new client(%d) from pid %d, audioSessionId=%d",
288         connId, pid, audioSessionId);
289
290    if (OK != c->setDataSource(source)) {
291        c.clear();
292    } else {
293        wp<Client> w = c;
294        Mutex::Autolock lock(mLock);
295        mClients.add(w);
296    }
297
298    return c;
299}
300
301sp<IOMX> MediaPlayerService::getOMX() {
302    Mutex::Autolock autoLock(mLock);
303
304    if (mOMX.get() == NULL) {
305        mOMX = new OMX;
306    }
307
308    return mOMX;
309}
310
311status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
312{
313    const size_t SIZE = 256;
314    char buffer[SIZE];
315    String8 result;
316
317    result.append(" AudioCache\n");
318    if (mHeap != 0) {
319        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
320                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
321        result.append(buffer);
322    }
323    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
324            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
325    result.append(buffer);
326    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
327            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
328    result.append(buffer);
329    ::write(fd, result.string(), result.size());
330    return NO_ERROR;
331}
332
333status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
334{
335    const size_t SIZE = 256;
336    char buffer[SIZE];
337    String8 result;
338
339    result.append(" AudioOutput\n");
340    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
341            mStreamType, mLeftVolume, mRightVolume);
342    result.append(buffer);
343    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
344            mMsecsPerFrame, mLatency);
345    result.append(buffer);
346    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
347            mAuxEffectId, mSendLevel);
348    result.append(buffer);
349
350    ::write(fd, result.string(), result.size());
351    if (mTrack != 0) {
352        mTrack->dump(fd, args);
353    }
354    return NO_ERROR;
355}
356
357status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
358{
359    const size_t SIZE = 256;
360    char buffer[SIZE];
361    String8 result;
362    result.append(" Client\n");
363    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
364            mPid, mConnId, mStatus, mLoop?"true": "false");
365    result.append(buffer);
366    write(fd, result.string(), result.size());
367    if (mAudioOutput != 0) {
368        mAudioOutput->dump(fd, args);
369    }
370    write(fd, "\n", 1);
371    return NO_ERROR;
372}
373
374static int myTid() {
375#ifdef HAVE_GETTID
376    return gettid();
377#else
378    return getpid();
379#endif
380}
381
382#if defined(__arm__)
383extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
384        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
385extern "C" void free_malloc_leak_info(uint8_t* info);
386
387// Use the String-class below instead of String8 to allocate all memory
388// beforehand and not reenter the heap while we are examining it...
389struct MyString8 {
390    static const size_t MAX_SIZE = 256 * 1024;
391
392    MyString8()
393        : mPtr((char *)malloc(MAX_SIZE)) {
394        *mPtr = '\0';
395    }
396
397    ~MyString8() {
398        free(mPtr);
399    }
400
401    void append(const char *s) {
402        strcat(mPtr, s);
403    }
404
405    const char *string() const {
406        return mPtr;
407    }
408
409    size_t size() const {
410        return strlen(mPtr);
411    }
412
413private:
414    char *mPtr;
415
416    MyString8(const MyString8 &);
417    MyString8 &operator=(const MyString8 &);
418};
419
420void memStatus(int fd, const Vector<String16>& args)
421{
422    const size_t SIZE = 256;
423    char buffer[SIZE];
424    MyString8 result;
425
426    typedef struct {
427        size_t size;
428        size_t dups;
429        intptr_t * backtrace;
430    } AllocEntry;
431
432    uint8_t *info = NULL;
433    size_t overallSize = 0;
434    size_t infoSize = 0;
435    size_t totalMemory = 0;
436    size_t backtraceSize = 0;
437
438    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
439    if (info) {
440        uint8_t *ptr = info;
441        size_t count = overallSize / infoSize;
442
443        snprintf(buffer, SIZE, " Allocation count %i\n", count);
444        result.append(buffer);
445        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
446        result.append(buffer);
447
448        AllocEntry * entries = new AllocEntry[count];
449
450        for (size_t i = 0; i < count; i++) {
451            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
452            AllocEntry *e = &entries[i];
453
454            e->size = *reinterpret_cast<size_t *>(ptr);
455            ptr += sizeof(size_t);
456
457            e->dups = *reinterpret_cast<size_t *>(ptr);
458            ptr += sizeof(size_t);
459
460            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
461            ptr += sizeof(intptr_t) * backtraceSize;
462        }
463
464        // Now we need to sort the entries.  They come sorted by size but
465        // not by stack trace which causes problems using diff.
466        bool moved;
467        do {
468            moved = false;
469            for (size_t i = 0; i < (count - 1); i++) {
470                AllocEntry *e1 = &entries[i];
471                AllocEntry *e2 = &entries[i+1];
472
473                bool swap = e1->size < e2->size;
474                if (e1->size == e2->size) {
475                    for(size_t j = 0; j < backtraceSize; j++) {
476                        if (e1->backtrace[j] == e2->backtrace[j]) {
477                            continue;
478                        }
479                        swap = e1->backtrace[j] < e2->backtrace[j];
480                        break;
481                    }
482                }
483                if (swap) {
484                    AllocEntry t = entries[i];
485                    entries[i] = entries[i+1];
486                    entries[i+1] = t;
487                    moved = true;
488                }
489            }
490        } while (moved);
491
492        for (size_t i = 0; i < count; i++) {
493            AllocEntry *e = &entries[i];
494
495            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
496            result.append(buffer);
497            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
498                if (ct) {
499                    result.append(", ");
500                }
501                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
502                result.append(buffer);
503            }
504            result.append("\n");
505        }
506
507        delete[] entries;
508        free_malloc_leak_info(info);
509    }
510
511    write(fd, result.string(), result.size());
512}
513#endif
514
515status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
516{
517    const size_t SIZE = 256;
518    char buffer[SIZE];
519    String8 result;
520    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
521        snprintf(buffer, SIZE, "Permission Denial: "
522                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
523                IPCThreadState::self()->getCallingPid(),
524                IPCThreadState::self()->getCallingUid());
525        result.append(buffer);
526    } else {
527        Mutex::Autolock lock(mLock);
528        for (int i = 0, n = mClients.size(); i < n; ++i) {
529            sp<Client> c = mClients[i].promote();
530            if (c != 0) c->dump(fd, args);
531        }
532        if (mMediaRecorderClients.size() == 0) {
533                result.append(" No media recorder client\n\n");
534        } else {
535            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
536                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
537                snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
538                result.append(buffer);
539                write(fd, result.string(), result.size());
540                result = "\n";
541                c->dump(fd, args);
542            }
543        }
544
545        result.append(" Files opened and/or mapped:\n");
546        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
547        FILE *f = fopen(buffer, "r");
548        if (f) {
549            while (!feof(f)) {
550                fgets(buffer, SIZE, f);
551                if (strstr(buffer, " /mnt/sdcard/") ||
552                    strstr(buffer, " /system/sounds/") ||
553                    strstr(buffer, " /data/") ||
554                    strstr(buffer, " /system/media/")) {
555                    result.append("  ");
556                    result.append(buffer);
557                }
558            }
559            fclose(f);
560        } else {
561            result.append("couldn't open ");
562            result.append(buffer);
563            result.append("\n");
564        }
565
566        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
567        DIR *d = opendir(buffer);
568        if (d) {
569            struct dirent *ent;
570            while((ent = readdir(d)) != NULL) {
571                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
572                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
573                    struct stat s;
574                    if (lstat(buffer, &s) == 0) {
575                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
576                            char linkto[256];
577                            int len = readlink(buffer, linkto, sizeof(linkto));
578                            if(len > 0) {
579                                if(len > 255) {
580                                    linkto[252] = '.';
581                                    linkto[253] = '.';
582                                    linkto[254] = '.';
583                                    linkto[255] = 0;
584                                } else {
585                                    linkto[len] = 0;
586                                }
587                                if (strstr(linkto, "/mnt/sdcard/") == linkto ||
588                                    strstr(linkto, "/system/sounds/") == linkto ||
589                                    strstr(linkto, "/data/") == linkto ||
590                                    strstr(linkto, "/system/media/") == linkto) {
591                                    result.append("  ");
592                                    result.append(buffer);
593                                    result.append(" -> ");
594                                    result.append(linkto);
595                                    result.append("\n");
596                                }
597                            }
598                        } else {
599                            result.append("  unexpected type for ");
600                            result.append(buffer);
601                            result.append("\n");
602                        }
603                    }
604                }
605            }
606            closedir(d);
607        } else {
608            result.append("couldn't open ");
609            result.append(buffer);
610            result.append("\n");
611        }
612
613#if defined(__arm__)
614        bool dumpMem = false;
615        for (size_t i = 0; i < args.size(); i++) {
616            if (args[i] == String16("-m")) {
617                dumpMem = true;
618            }
619        }
620        if (dumpMem) {
621            memStatus(fd, args);
622        }
623#endif
624    }
625    write(fd, result.string(), result.size());
626    return NO_ERROR;
627}
628
629void MediaPlayerService::removeClient(wp<Client> client)
630{
631    Mutex::Autolock lock(mLock);
632    mClients.remove(client);
633}
634
635MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
636        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
637{
638    LOGV("Client(%d) constructor", connId);
639    mPid = pid;
640    mConnId = connId;
641    mService = service;
642    mClient = client;
643    mLoop = false;
644    mStatus = NO_INIT;
645    mAudioSessionId = audioSessionId;
646
647#if CALLBACK_ANTAGONIZER
648    LOGD("create Antagonizer");
649    mAntagonizer = new Antagonizer(notify, this);
650#endif
651}
652
653MediaPlayerService::Client::~Client()
654{
655    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
656    mAudioOutput.clear();
657    wp<Client> client(this);
658    disconnect();
659    mService->removeClient(client);
660}
661
662void MediaPlayerService::Client::disconnect()
663{
664    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
665    // grab local reference and clear main reference to prevent future
666    // access to object
667    sp<MediaPlayerBase> p;
668    {
669        Mutex::Autolock l(mLock);
670        p = mPlayer;
671    }
672    mClient.clear();
673
674    mPlayer.clear();
675
676    // clear the notification to prevent callbacks to dead client
677    // and reset the player. We assume the player will serialize
678    // access to itself if necessary.
679    if (p != 0) {
680        p->setNotifyCallback(0, 0);
681#if CALLBACK_ANTAGONIZER
682        LOGD("kill Antagonizer");
683        mAntagonizer->kill();
684#endif
685        p->reset();
686    }
687
688    IPCThreadState::self()->flushCommands();
689}
690
691static player_type getDefaultPlayerType() {
692    return STAGEFRIGHT_PLAYER;
693}
694
695player_type getPlayerType(int fd, int64_t offset, int64_t length)
696{
697    char buf[20];
698    lseek(fd, offset, SEEK_SET);
699    read(fd, buf, sizeof(buf));
700    lseek(fd, offset, SEEK_SET);
701
702    long ident = *((long*)buf);
703
704    // Ogg vorbis?
705    if (ident == 0x5367674f) // 'OggS'
706        return STAGEFRIGHT_PLAYER;
707
708    // Some kind of MIDI?
709    EAS_DATA_HANDLE easdata;
710    if (EAS_Init(&easdata) == EAS_SUCCESS) {
711        EAS_FILE locator;
712        locator.path = NULL;
713        locator.fd = fd;
714        locator.offset = offset;
715        locator.length = length;
716        EAS_HANDLE  eashandle;
717        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
718            EAS_CloseFile(easdata, eashandle);
719            EAS_Shutdown(easdata);
720            return SONIVOX_PLAYER;
721        }
722        EAS_Shutdown(easdata);
723    }
724
725    return getDefaultPlayerType();
726}
727
728player_type getPlayerType(const char* url)
729{
730    if (TestPlayerStub::canBeUsed(url)) {
731        return TEST_PLAYER;
732    }
733
734    // use MidiFile for MIDI extensions
735    int lenURL = strlen(url);
736    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
737        int len = strlen(FILE_EXTS[i].extension);
738        int start = lenURL - len;
739        if (start > 0) {
740            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
741                return FILE_EXTS[i].playertype;
742            }
743        }
744    }
745
746    return getDefaultPlayerType();
747}
748
749static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
750        notify_callback_f notifyFunc)
751{
752    sp<MediaPlayerBase> p;
753    switch (playerType) {
754        case SONIVOX_PLAYER:
755            LOGV(" create MidiFile");
756            p = new MidiFile();
757            break;
758        case STAGEFRIGHT_PLAYER:
759            LOGV(" create StagefrightPlayer");
760            p = new StagefrightPlayer;
761            break;
762        case TEST_PLAYER:
763            LOGV("Create Test Player stub");
764            p = new TestPlayerStub();
765            break;
766        default:
767            LOGE("Unknown player type: %d", playerType);
768            return NULL;
769    }
770    if (p != NULL) {
771        if (p->initCheck() == NO_ERROR) {
772            p->setNotifyCallback(cookie, notifyFunc);
773        } else {
774            p.clear();
775        }
776    }
777    if (p == NULL) {
778        LOGE("Failed to create player object");
779    }
780    return p;
781}
782
783sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
784{
785    // determine if we have the right player type
786    sp<MediaPlayerBase> p = mPlayer;
787    if ((p != NULL) && (p->playerType() != playerType)) {
788        LOGV("delete player");
789        p.clear();
790    }
791    if (p == NULL) {
792        p = android::createPlayer(playerType, this, notify);
793    }
794    return p;
795}
796
797status_t MediaPlayerService::Client::setDataSource(
798        const char *url, const KeyedVector<String8, String8> *headers)
799{
800    LOGV("setDataSource(%s)", url);
801    if (url == NULL)
802        return UNKNOWN_ERROR;
803
804    if (strncmp(url, "content://", 10) == 0) {
805        // get a filedescriptor for the content Uri and
806        // pass it to the setDataSource(fd) method
807
808        String16 url16(url);
809        int fd = android::openContentProviderFile(url16);
810        if (fd < 0)
811        {
812            LOGE("Couldn't open fd for %s", url);
813            return UNKNOWN_ERROR;
814        }
815        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
816        close(fd);
817        return mStatus;
818    } else {
819        player_type playerType = getPlayerType(url);
820        LOGV("player type = %d", playerType);
821
822        // create the right type of player
823        sp<MediaPlayerBase> p = createPlayer(playerType);
824        if (p == NULL) return NO_INIT;
825
826        if (!p->hardwareOutput()) {
827            mAudioOutput = new AudioOutput(mAudioSessionId);
828            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
829        }
830
831        // now set data source
832        LOGV(" setDataSource");
833        mStatus = p->setDataSource(url, headers);
834        if (mStatus == NO_ERROR) {
835            mPlayer = p;
836        } else {
837            LOGE("  error: %d", mStatus);
838        }
839        return mStatus;
840    }
841}
842
843status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
844{
845    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
846    struct stat sb;
847    int ret = fstat(fd, &sb);
848    if (ret != 0) {
849        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
850        return UNKNOWN_ERROR;
851    }
852
853    LOGV("st_dev  = %llu", sb.st_dev);
854    LOGV("st_mode = %u", sb.st_mode);
855    LOGV("st_uid  = %lu", sb.st_uid);
856    LOGV("st_gid  = %lu", sb.st_gid);
857    LOGV("st_size = %llu", sb.st_size);
858
859    if (offset >= sb.st_size) {
860        LOGE("offset error");
861        ::close(fd);
862        return UNKNOWN_ERROR;
863    }
864    if (offset + length > sb.st_size) {
865        length = sb.st_size - offset;
866        LOGV("calculated length = %lld", length);
867    }
868
869    player_type playerType = getPlayerType(fd, offset, length);
870    LOGV("player type = %d", playerType);
871
872    // create the right type of player
873    sp<MediaPlayerBase> p = createPlayer(playerType);
874    if (p == NULL) return NO_INIT;
875
876    if (!p->hardwareOutput()) {
877        mAudioOutput = new AudioOutput(mAudioSessionId);
878        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
879    }
880
881    // now set data source
882    mStatus = p->setDataSource(fd, offset, length);
883    if (mStatus == NO_ERROR) mPlayer = p;
884    return mStatus;
885}
886
887status_t MediaPlayerService::Client::setDataSource(
888        const sp<IStreamSource> &source) {
889    // create the right type of player
890    sp<MediaPlayerBase> p = createPlayer(STAGEFRIGHT_PLAYER);
891
892    if (p == NULL) {
893        return NO_INIT;
894    }
895
896    if (!p->hardwareOutput()) {
897        mAudioOutput = new AudioOutput(mAudioSessionId);
898        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
899    }
900
901    // now set data source
902    mStatus = p->setDataSource(source);
903
904    if (mStatus == OK) {
905        mPlayer = p;
906    }
907
908    return mStatus;
909}
910
911status_t MediaPlayerService::Client::setVideoSurface(const sp<Surface>& surface)
912{
913    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
914    sp<MediaPlayerBase> p = getPlayer();
915    if (p == 0) return UNKNOWN_ERROR;
916    return p->setVideoSurface(surface);
917}
918
919status_t MediaPlayerService::Client::invoke(const Parcel& request,
920                                            Parcel *reply)
921{
922    sp<MediaPlayerBase> p = getPlayer();
923    if (p == NULL) return UNKNOWN_ERROR;
924    return p->invoke(request, reply);
925}
926
927// This call doesn't need to access the native player.
928status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
929{
930    status_t status;
931    media::Metadata::Filter allow, drop;
932
933    if (unmarshallFilter(filter, &allow, &status) &&
934        unmarshallFilter(filter, &drop, &status)) {
935        Mutex::Autolock lock(mLock);
936
937        mMetadataAllow = allow;
938        mMetadataDrop = drop;
939    }
940    return status;
941}
942
943status_t MediaPlayerService::Client::getMetadata(
944        bool update_only, bool apply_filter, Parcel *reply)
945{
946    sp<MediaPlayerBase> player = getPlayer();
947    if (player == 0) return UNKNOWN_ERROR;
948
949    status_t status;
950    // Placeholder for the return code, updated by the caller.
951    reply->writeInt32(-1);
952
953    media::Metadata::Filter ids;
954
955    // We don't block notifications while we fetch the data. We clear
956    // mMetadataUpdated first so we don't lose notifications happening
957    // during the rest of this call.
958    {
959        Mutex::Autolock lock(mLock);
960        if (update_only) {
961            ids = mMetadataUpdated;
962        }
963        mMetadataUpdated.clear();
964    }
965
966    media::Metadata metadata(reply);
967
968    metadata.appendHeader();
969    status = player->getMetadata(ids, reply);
970
971    if (status != OK) {
972        metadata.resetParcel();
973        LOGE("getMetadata failed %d", status);
974        return status;
975    }
976
977    // FIXME: Implement filtering on the result. Not critical since
978    // filtering takes place on the update notifications already. This
979    // would be when all the metadata are fetch and a filter is set.
980
981    // Everything is fine, update the metadata length.
982    metadata.updateLength();
983    return OK;
984}
985
986status_t MediaPlayerService::Client::prepareAsync()
987{
988    LOGV("[%d] prepareAsync", mConnId);
989    sp<MediaPlayerBase> p = getPlayer();
990    if (p == 0) return UNKNOWN_ERROR;
991    status_t ret = p->prepareAsync();
992#if CALLBACK_ANTAGONIZER
993    LOGD("start Antagonizer");
994    if (ret == NO_ERROR) mAntagonizer->start();
995#endif
996    return ret;
997}
998
999status_t MediaPlayerService::Client::start()
1000{
1001    LOGV("[%d] start", mConnId);
1002    sp<MediaPlayerBase> p = getPlayer();
1003    if (p == 0) return UNKNOWN_ERROR;
1004    p->setLooping(mLoop);
1005    return p->start();
1006}
1007
1008status_t MediaPlayerService::Client::stop()
1009{
1010    LOGV("[%d] stop", mConnId);
1011    sp<MediaPlayerBase> p = getPlayer();
1012    if (p == 0) return UNKNOWN_ERROR;
1013    return p->stop();
1014}
1015
1016status_t MediaPlayerService::Client::pause()
1017{
1018    LOGV("[%d] pause", mConnId);
1019    sp<MediaPlayerBase> p = getPlayer();
1020    if (p == 0) return UNKNOWN_ERROR;
1021    return p->pause();
1022}
1023
1024status_t MediaPlayerService::Client::isPlaying(bool* state)
1025{
1026    *state = false;
1027    sp<MediaPlayerBase> p = getPlayer();
1028    if (p == 0) return UNKNOWN_ERROR;
1029    *state = p->isPlaying();
1030    LOGV("[%d] isPlaying: %d", mConnId, *state);
1031    return NO_ERROR;
1032}
1033
1034status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1035{
1036    LOGV("getCurrentPosition");
1037    sp<MediaPlayerBase> p = getPlayer();
1038    if (p == 0) return UNKNOWN_ERROR;
1039    status_t ret = p->getCurrentPosition(msec);
1040    if (ret == NO_ERROR) {
1041        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1042    } else {
1043        LOGE("getCurrentPosition returned %d", ret);
1044    }
1045    return ret;
1046}
1047
1048status_t MediaPlayerService::Client::getDuration(int *msec)
1049{
1050    LOGV("getDuration");
1051    sp<MediaPlayerBase> p = getPlayer();
1052    if (p == 0) return UNKNOWN_ERROR;
1053    status_t ret = p->getDuration(msec);
1054    if (ret == NO_ERROR) {
1055        LOGV("[%d] getDuration = %d", mConnId, *msec);
1056    } else {
1057        LOGE("getDuration returned %d", ret);
1058    }
1059    return ret;
1060}
1061
1062status_t MediaPlayerService::Client::seekTo(int msec)
1063{
1064    LOGV("[%d] seekTo(%d)", mConnId, msec);
1065    sp<MediaPlayerBase> p = getPlayer();
1066    if (p == 0) return UNKNOWN_ERROR;
1067    return p->seekTo(msec);
1068}
1069
1070status_t MediaPlayerService::Client::reset()
1071{
1072    LOGV("[%d] reset", mConnId);
1073    sp<MediaPlayerBase> p = getPlayer();
1074    if (p == 0) return UNKNOWN_ERROR;
1075    return p->reset();
1076}
1077
1078status_t MediaPlayerService::Client::setAudioStreamType(int type)
1079{
1080    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1081    // TODO: for hardware output, call player instead
1082    Mutex::Autolock l(mLock);
1083    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1084    return NO_ERROR;
1085}
1086
1087status_t MediaPlayerService::Client::setLooping(int loop)
1088{
1089    LOGV("[%d] setLooping(%d)", mConnId, loop);
1090    mLoop = loop;
1091    sp<MediaPlayerBase> p = getPlayer();
1092    if (p != 0) return p->setLooping(loop);
1093    return NO_ERROR;
1094}
1095
1096status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1097{
1098    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1099    // TODO: for hardware output, call player instead
1100    Mutex::Autolock l(mLock);
1101    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1102    return NO_ERROR;
1103}
1104
1105status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1106{
1107    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1108    Mutex::Autolock l(mLock);
1109    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1110    return NO_ERROR;
1111}
1112
1113status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1114{
1115    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1116    Mutex::Autolock l(mLock);
1117    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1118    return NO_ERROR;
1119}
1120
1121void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1122{
1123    Client* client = static_cast<Client*>(cookie);
1124
1125    if (MEDIA_INFO == msg &&
1126        MEDIA_INFO_METADATA_UPDATE == ext1) {
1127        const media::Metadata::Type metadata_type = ext2;
1128
1129        if(client->shouldDropMetadata(metadata_type)) {
1130            return;
1131        }
1132
1133        // Update the list of metadata that have changed. getMetadata
1134        // also access mMetadataUpdated and clears it.
1135        client->addNewMetadataUpdate(metadata_type);
1136    }
1137    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1138    client->mClient->notify(msg, ext1, ext2);
1139}
1140
1141
1142bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1143{
1144    Mutex::Autolock lock(mLock);
1145
1146    if (findMetadata(mMetadataDrop, code)) {
1147        return true;
1148    }
1149
1150    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1151        return false;
1152    } else {
1153        return true;
1154    }
1155}
1156
1157
1158void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1159    Mutex::Autolock lock(mLock);
1160    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1161        mMetadataUpdated.add(metadata_type);
1162    }
1163}
1164
1165#if CALLBACK_ANTAGONIZER
1166const int Antagonizer::interval = 10000; // 10 msecs
1167
1168Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1169    mExit(false), mActive(false), mClient(client), mCb(cb)
1170{
1171    createThread(callbackThread, this);
1172}
1173
1174void Antagonizer::kill()
1175{
1176    Mutex::Autolock _l(mLock);
1177    mActive = false;
1178    mExit = true;
1179    mCondition.wait(mLock);
1180}
1181
1182int Antagonizer::callbackThread(void* user)
1183{
1184    LOGD("Antagonizer started");
1185    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1186    while (!p->mExit) {
1187        if (p->mActive) {
1188            LOGV("send event");
1189            p->mCb(p->mClient, 0, 0, 0);
1190        }
1191        usleep(interval);
1192    }
1193    Mutex::Autolock _l(p->mLock);
1194    p->mCondition.signal();
1195    LOGD("Antagonizer stopped");
1196    return 0;
1197}
1198#endif
1199
1200static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1201
1202sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1203{
1204    LOGV("decode(%s)", url);
1205    sp<MemoryBase> mem;
1206    sp<MediaPlayerBase> player;
1207
1208    // Protect our precious, precious DRMd ringtones by only allowing
1209    // decoding of http, but not filesystem paths or content Uris.
1210    // If the application wants to decode those, it should open a
1211    // filedescriptor for them and use that.
1212    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1213        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1214        return mem;
1215    }
1216
1217    player_type playerType = getPlayerType(url);
1218    LOGV("player type = %d", playerType);
1219
1220    // create the right type of player
1221    sp<AudioCache> cache = new AudioCache(url);
1222    player = android::createPlayer(playerType, cache.get(), cache->notify);
1223    if (player == NULL) goto Exit;
1224    if (player->hardwareOutput()) goto Exit;
1225
1226    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1227
1228    // set data source
1229    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1230
1231    LOGV("prepare");
1232    player->prepareAsync();
1233
1234    LOGV("wait for prepare");
1235    if (cache->wait() != NO_ERROR) goto Exit;
1236
1237    LOGV("start");
1238    player->start();
1239
1240    LOGV("wait for playback complete");
1241    if (cache->wait() != NO_ERROR) goto Exit;
1242
1243    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1244    *pSampleRate = cache->sampleRate();
1245    *pNumChannels = cache->channelCount();
1246    *pFormat = cache->format();
1247    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1248
1249Exit:
1250    if (player != 0) player->reset();
1251    return mem;
1252}
1253
1254sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1255{
1256    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1257    sp<MemoryBase> mem;
1258    sp<MediaPlayerBase> player;
1259
1260    player_type playerType = getPlayerType(fd, offset, length);
1261    LOGV("player type = %d", playerType);
1262
1263    // create the right type of player
1264    sp<AudioCache> cache = new AudioCache("decode_fd");
1265    player = android::createPlayer(playerType, cache.get(), cache->notify);
1266    if (player == NULL) goto Exit;
1267    if (player->hardwareOutput()) goto Exit;
1268
1269    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1270
1271    // set data source
1272    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1273
1274    LOGV("prepare");
1275    player->prepareAsync();
1276
1277    LOGV("wait for prepare");
1278    if (cache->wait() != NO_ERROR) goto Exit;
1279
1280    LOGV("start");
1281    player->start();
1282
1283    LOGV("wait for playback complete");
1284    if (cache->wait() != NO_ERROR) goto Exit;
1285
1286    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1287    *pSampleRate = cache->sampleRate();
1288    *pNumChannels = cache->channelCount();
1289    *pFormat = cache->format();
1290    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1291
1292Exit:
1293    if (player != 0) player->reset();
1294    ::close(fd);
1295    return mem;
1296}
1297
1298
1299#undef LOG_TAG
1300#define LOG_TAG "AudioSink"
1301MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1302    : mCallback(NULL),
1303      mCallbackCookie(NULL),
1304      mSessionId(sessionId) {
1305    LOGV("AudioOutput(%d)", sessionId);
1306    mTrack = 0;
1307    mStreamType = AudioSystem::MUSIC;
1308    mLeftVolume = 1.0;
1309    mRightVolume = 1.0;
1310    mLatency = 0;
1311    mMsecsPerFrame = 0;
1312    mAuxEffectId = 0;
1313    mSendLevel = 0.0;
1314    setMinBufferCount();
1315}
1316
1317MediaPlayerService::AudioOutput::~AudioOutput()
1318{
1319    close();
1320}
1321
1322void MediaPlayerService::AudioOutput::setMinBufferCount()
1323{
1324    char value[PROPERTY_VALUE_MAX];
1325    if (property_get("ro.kernel.qemu", value, 0)) {
1326        mIsOnEmulator = true;
1327        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1328    }
1329}
1330
1331bool MediaPlayerService::AudioOutput::isOnEmulator()
1332{
1333    setMinBufferCount();
1334    return mIsOnEmulator;
1335}
1336
1337int MediaPlayerService::AudioOutput::getMinBufferCount()
1338{
1339    setMinBufferCount();
1340    return mMinBufferCount;
1341}
1342
1343ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1344{
1345    if (mTrack == 0) return NO_INIT;
1346    return mTrack->frameCount() * frameSize();
1347}
1348
1349ssize_t MediaPlayerService::AudioOutput::frameCount() const
1350{
1351    if (mTrack == 0) return NO_INIT;
1352    return mTrack->frameCount();
1353}
1354
1355ssize_t MediaPlayerService::AudioOutput::channelCount() const
1356{
1357    if (mTrack == 0) return NO_INIT;
1358    return mTrack->channelCount();
1359}
1360
1361ssize_t MediaPlayerService::AudioOutput::frameSize() const
1362{
1363    if (mTrack == 0) return NO_INIT;
1364    return mTrack->frameSize();
1365}
1366
1367uint32_t MediaPlayerService::AudioOutput::latency () const
1368{
1369    return mLatency;
1370}
1371
1372float MediaPlayerService::AudioOutput::msecsPerFrame() const
1373{
1374    return mMsecsPerFrame;
1375}
1376
1377status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1378{
1379    if (mTrack == 0) return NO_INIT;
1380    return mTrack->getPosition(position);
1381}
1382
1383status_t MediaPlayerService::AudioOutput::open(
1384        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1385        AudioCallback cb, void *cookie)
1386{
1387    mCallback = cb;
1388    mCallbackCookie = cookie;
1389
1390    // Check argument "bufferCount" against the mininum buffer count
1391    if (bufferCount < mMinBufferCount) {
1392        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1393        bufferCount = mMinBufferCount;
1394
1395    }
1396    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1397    if (mTrack) close();
1398    int afSampleRate;
1399    int afFrameCount;
1400    int frameCount;
1401
1402    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1403        return NO_INIT;
1404    }
1405    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1406        return NO_INIT;
1407    }
1408
1409    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1410
1411    AudioTrack *t;
1412    if (mCallback != NULL) {
1413        t = new AudioTrack(
1414                mStreamType,
1415                sampleRate,
1416                format,
1417                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1418                frameCount,
1419                0 /* flags */,
1420                CallbackWrapper,
1421                this,
1422                0,
1423                mSessionId);
1424    } else {
1425        t = new AudioTrack(
1426                mStreamType,
1427                sampleRate,
1428                format,
1429                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1430                frameCount,
1431                0,
1432                NULL,
1433                NULL,
1434                0,
1435                mSessionId);
1436    }
1437
1438    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1439        LOGE("Unable to create audio track");
1440        delete t;
1441        return NO_INIT;
1442    }
1443
1444    LOGV("setVolume");
1445    t->setVolume(mLeftVolume, mRightVolume);
1446
1447    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1448    mLatency = t->latency();
1449    mTrack = t;
1450
1451    t->setAuxEffectSendLevel(mSendLevel);
1452    return t->attachAuxEffect(mAuxEffectId);;
1453}
1454
1455void MediaPlayerService::AudioOutput::start()
1456{
1457    LOGV("start");
1458    if (mTrack) {
1459        mTrack->setVolume(mLeftVolume, mRightVolume);
1460        mTrack->setAuxEffectSendLevel(mSendLevel);
1461        mTrack->start();
1462    }
1463}
1464
1465
1466
1467ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1468{
1469    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1470
1471    //LOGV("write(%p, %u)", buffer, size);
1472    if (mTrack) {
1473        ssize_t ret = mTrack->write(buffer, size);
1474        return ret;
1475    }
1476    return NO_INIT;
1477}
1478
1479void MediaPlayerService::AudioOutput::stop()
1480{
1481    LOGV("stop");
1482    if (mTrack) mTrack->stop();
1483}
1484
1485void MediaPlayerService::AudioOutput::flush()
1486{
1487    LOGV("flush");
1488    if (mTrack) mTrack->flush();
1489}
1490
1491void MediaPlayerService::AudioOutput::pause()
1492{
1493    LOGV("pause");
1494    if (mTrack) mTrack->pause();
1495}
1496
1497void MediaPlayerService::AudioOutput::close()
1498{
1499    LOGV("close");
1500    delete mTrack;
1501    mTrack = 0;
1502}
1503
1504void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1505{
1506    LOGV("setVolume(%f, %f)", left, right);
1507    mLeftVolume = left;
1508    mRightVolume = right;
1509    if (mTrack) {
1510        mTrack->setVolume(left, right);
1511    }
1512}
1513
1514status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1515{
1516    LOGV("setAuxEffectSendLevel(%f)", level);
1517    mSendLevel = level;
1518    if (mTrack) {
1519        return mTrack->setAuxEffectSendLevel(level);
1520    }
1521    return NO_ERROR;
1522}
1523
1524status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1525{
1526    LOGV("attachAuxEffect(%d)", effectId);
1527    mAuxEffectId = effectId;
1528    if (mTrack) {
1529        return mTrack->attachAuxEffect(effectId);
1530    }
1531    return NO_ERROR;
1532}
1533
1534// static
1535void MediaPlayerService::AudioOutput::CallbackWrapper(
1536        int event, void *cookie, void *info) {
1537    //LOGV("callbackwrapper");
1538    if (event != AudioTrack::EVENT_MORE_DATA) {
1539        return;
1540    }
1541
1542    AudioOutput *me = (AudioOutput *)cookie;
1543    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1544
1545    size_t actualSize = (*me->mCallback)(
1546            me, buffer->raw, buffer->size, me->mCallbackCookie);
1547
1548    buffer->size = actualSize;
1549
1550}
1551
1552int MediaPlayerService::AudioOutput::getSessionId()
1553{
1554    return mSessionId;
1555}
1556
1557#undef LOG_TAG
1558#define LOG_TAG "AudioCache"
1559MediaPlayerService::AudioCache::AudioCache(const char* name) :
1560    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1561    mError(NO_ERROR), mCommandComplete(false)
1562{
1563    // create ashmem heap
1564    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1565}
1566
1567uint32_t MediaPlayerService::AudioCache::latency () const
1568{
1569    return 0;
1570}
1571
1572float MediaPlayerService::AudioCache::msecsPerFrame() const
1573{
1574    return mMsecsPerFrame;
1575}
1576
1577status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1578{
1579    if (position == 0) return BAD_VALUE;
1580    *position = mSize;
1581    return NO_ERROR;
1582}
1583
1584////////////////////////////////////////////////////////////////////////////////
1585
1586struct CallbackThread : public Thread {
1587    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1588                   MediaPlayerBase::AudioSink::AudioCallback cb,
1589                   void *cookie);
1590
1591protected:
1592    virtual ~CallbackThread();
1593
1594    virtual bool threadLoop();
1595
1596private:
1597    wp<MediaPlayerBase::AudioSink> mSink;
1598    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1599    void *mCookie;
1600    void *mBuffer;
1601    size_t mBufferSize;
1602
1603    CallbackThread(const CallbackThread &);
1604    CallbackThread &operator=(const CallbackThread &);
1605};
1606
1607CallbackThread::CallbackThread(
1608        const wp<MediaPlayerBase::AudioSink> &sink,
1609        MediaPlayerBase::AudioSink::AudioCallback cb,
1610        void *cookie)
1611    : mSink(sink),
1612      mCallback(cb),
1613      mCookie(cookie),
1614      mBuffer(NULL),
1615      mBufferSize(0) {
1616}
1617
1618CallbackThread::~CallbackThread() {
1619    if (mBuffer) {
1620        free(mBuffer);
1621        mBuffer = NULL;
1622    }
1623}
1624
1625bool CallbackThread::threadLoop() {
1626    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1627    if (sink == NULL) {
1628        return false;
1629    }
1630
1631    if (mBuffer == NULL) {
1632        mBufferSize = sink->bufferSize();
1633        mBuffer = malloc(mBufferSize);
1634    }
1635
1636    size_t actualSize =
1637        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1638
1639    if (actualSize > 0) {
1640        sink->write(mBuffer, actualSize);
1641    }
1642
1643    return true;
1644}
1645
1646////////////////////////////////////////////////////////////////////////////////
1647
1648status_t MediaPlayerService::AudioCache::open(
1649        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1650        AudioCallback cb, void *cookie)
1651{
1652    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1653    if (mHeap->getHeapID() < 0) {
1654        return NO_INIT;
1655    }
1656
1657    mSampleRate = sampleRate;
1658    mChannelCount = (uint16_t)channelCount;
1659    mFormat = (uint16_t)format;
1660    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1661
1662    if (cb != NULL) {
1663        mCallbackThread = new CallbackThread(this, cb, cookie);
1664    }
1665    return NO_ERROR;
1666}
1667
1668void MediaPlayerService::AudioCache::start() {
1669    if (mCallbackThread != NULL) {
1670        mCallbackThread->run("AudioCache callback");
1671    }
1672}
1673
1674void MediaPlayerService::AudioCache::stop() {
1675    if (mCallbackThread != NULL) {
1676        mCallbackThread->requestExitAndWait();
1677    }
1678}
1679
1680ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1681{
1682    LOGV("write(%p, %u)", buffer, size);
1683    if ((buffer == 0) || (size == 0)) return size;
1684
1685    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1686    if (p == NULL) return NO_INIT;
1687    p += mSize;
1688    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1689    if (mSize + size > mHeap->getSize()) {
1690        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1691        size = mHeap->getSize() - mSize;
1692    }
1693    memcpy(p, buffer, size);
1694    mSize += size;
1695    return size;
1696}
1697
1698// call with lock held
1699status_t MediaPlayerService::AudioCache::wait()
1700{
1701    Mutex::Autolock lock(mLock);
1702    while (!mCommandComplete) {
1703        mSignal.wait(mLock);
1704    }
1705    mCommandComplete = false;
1706
1707    if (mError == NO_ERROR) {
1708        LOGV("wait - success");
1709    } else {
1710        LOGV("wait - error");
1711    }
1712    return mError;
1713}
1714
1715void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1716{
1717    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1718    AudioCache* p = static_cast<AudioCache*>(cookie);
1719
1720    // ignore buffering messages
1721    switch (msg)
1722    {
1723    case MEDIA_ERROR:
1724        LOGE("Error %d, %d occurred", ext1, ext2);
1725        p->mError = ext1;
1726        break;
1727    case MEDIA_PREPARED:
1728        LOGV("prepared");
1729        break;
1730    case MEDIA_PLAYBACK_COMPLETE:
1731        LOGV("playback complete");
1732        break;
1733    default:
1734        LOGV("ignored");
1735        return;
1736    }
1737
1738    // wake up thread
1739    Mutex::Autolock lock(p->mLock);
1740    p->mCommandComplete = true;
1741    p->mSignal.signal();
1742}
1743
1744int MediaPlayerService::AudioCache::getSessionId()
1745{
1746    return 0;
1747}
1748
1749} // namespace android
1750