MediaPlayerService.cpp revision 05ea6434ed399395e2dbe9f68abb44f04b274cb0 
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 <media/PVPlayer.h>
60#include "TestPlayerStub.h"
61#include "StagefrightPlayer.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#ifndef NO_OPENCORE
200        {".wma", PV_PLAYER},
201        {".wmv", PV_PLAYER},
202        {".asf", PV_PLAYER},
203#endif
204};
205
206// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
207/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
208/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
209
210void MediaPlayerService::instantiate() {
211    defaultServiceManager()->addService(
212            String16("media.player"), new MediaPlayerService());
213}
214
215MediaPlayerService::MediaPlayerService()
216{
217    LOGV("MediaPlayerService created");
218    mNextConnId = 1;
219}
220
221MediaPlayerService::~MediaPlayerService()
222{
223    LOGV("MediaPlayerService destroyed");
224}
225
226sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
227{
228    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
229    wp<MediaRecorderClient> w = recorder;
230    Mutex::Autolock lock(mLock);
231    mMediaRecorderClients.add(w);
232    LOGV("Create new media recorder client from pid %d", pid);
233    return recorder;
234}
235
236void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
237{
238    Mutex::Autolock lock(mLock);
239    mMediaRecorderClients.remove(client);
240    LOGV("Delete media recorder client");
241}
242
243sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
244{
245    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
246    LOGV("Create new media retriever from pid %d", pid);
247    return retriever;
248}
249
250sp<IMediaPlayer> MediaPlayerService::create(
251        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
252        const KeyedVector<String8, String8> *headers, int audioSessionId)
253{
254    int32_t connId = android_atomic_inc(&mNextConnId);
255    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
256    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
257            connId, pid, url, connId, audioSessionId);
258    if (NO_ERROR != c->setDataSource(url, headers))
259    {
260        c.clear();
261        return c;
262    }
263    wp<Client> w = c;
264    Mutex::Autolock lock(mLock);
265    mClients.add(w);
266    return c;
267}
268
269sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
270        int fd, int64_t offset, int64_t length, int audioSessionId)
271{
272    int32_t connId = android_atomic_inc(&mNextConnId);
273    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
274    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
275            connId, pid, fd, offset, length, audioSessionId);
276    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
277        c.clear();
278    } else {
279        wp<Client> w = c;
280        Mutex::Autolock lock(mLock);
281        mClients.add(w);
282    }
283    ::close(fd);
284    return c;
285}
286
287sp<IOMX> MediaPlayerService::getOMX() {
288    Mutex::Autolock autoLock(mLock);
289
290    if (mOMX.get() == NULL) {
291        mOMX = new OMX;
292    }
293
294    return mOMX;
295}
296
297status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
298{
299    const size_t SIZE = 256;
300    char buffer[SIZE];
301    String8 result;
302
303    result.append(" AudioCache\n");
304    if (mHeap != 0) {
305        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
306                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
307        result.append(buffer);
308    }
309    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
310            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
311    result.append(buffer);
312    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
313            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
314    result.append(buffer);
315    ::write(fd, result.string(), result.size());
316    return NO_ERROR;
317}
318
319status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
320{
321    const size_t SIZE = 256;
322    char buffer[SIZE];
323    String8 result;
324
325    result.append(" AudioOutput\n");
326    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
327            mStreamType, mLeftVolume, mRightVolume);
328    result.append(buffer);
329    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
330            mMsecsPerFrame, mLatency);
331    result.append(buffer);
332    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
333            mAuxEffectId, mSendLevel);
334    result.append(buffer);
335
336    ::write(fd, result.string(), result.size());
337    if (mTrack != 0) {
338        mTrack->dump(fd, args);
339    }
340    return NO_ERROR;
341}
342
343status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
344{
345    const size_t SIZE = 256;
346    char buffer[SIZE];
347    String8 result;
348    result.append(" Client\n");
349    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
350            mPid, mConnId, mStatus, mLoop?"true": "false");
351    result.append(buffer);
352    write(fd, result.string(), result.size());
353    if (mAudioOutput != 0) {
354        mAudioOutput->dump(fd, args);
355    }
356    write(fd, "\n", 1);
357    return NO_ERROR;
358}
359
360static int myTid() {
361#ifdef HAVE_GETTID
362    return gettid();
363#else
364    return getpid();
365#endif
366}
367
368#if defined(__arm__)
369extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
370        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
371extern "C" void free_malloc_leak_info(uint8_t* info);
372
373// Use the String-class below instead of String8 to allocate all memory
374// beforehand and not reenter the heap while we are examining it...
375struct MyString8 {
376    static const size_t MAX_SIZE = 256 * 1024;
377
378    MyString8()
379        : mPtr((char *)malloc(MAX_SIZE)) {
380        *mPtr = '\0';
381    }
382
383    ~MyString8() {
384        free(mPtr);
385    }
386
387    void append(const char *s) {
388        strcat(mPtr, s);
389    }
390
391    const char *string() const {
392        return mPtr;
393    }
394
395    size_t size() const {
396        return strlen(mPtr);
397    }
398
399private:
400    char *mPtr;
401
402    MyString8(const MyString8 &);
403    MyString8 &operator=(const MyString8 &);
404};
405
406void memStatus(int fd, const Vector<String16>& args)
407{
408    const size_t SIZE = 256;
409    char buffer[SIZE];
410    MyString8 result;
411
412    typedef struct {
413        size_t size;
414        size_t dups;
415        intptr_t * backtrace;
416    } AllocEntry;
417
418    uint8_t *info = NULL;
419    size_t overallSize = 0;
420    size_t infoSize = 0;
421    size_t totalMemory = 0;
422    size_t backtraceSize = 0;
423
424    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
425    if (info) {
426        uint8_t *ptr = info;
427        size_t count = overallSize / infoSize;
428
429        snprintf(buffer, SIZE, " Allocation count %i\n", count);
430        result.append(buffer);
431        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
432        result.append(buffer);
433
434        AllocEntry * entries = new AllocEntry[count];
435
436        for (size_t i = 0; i < count; i++) {
437            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
438            AllocEntry *e = &entries[i];
439
440            e->size = *reinterpret_cast<size_t *>(ptr);
441            ptr += sizeof(size_t);
442
443            e->dups = *reinterpret_cast<size_t *>(ptr);
444            ptr += sizeof(size_t);
445
446            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
447            ptr += sizeof(intptr_t) * backtraceSize;
448        }
449
450        // Now we need to sort the entries.  They come sorted by size but
451        // not by stack trace which causes problems using diff.
452        bool moved;
453        do {
454            moved = false;
455            for (size_t i = 0; i < (count - 1); i++) {
456                AllocEntry *e1 = &entries[i];
457                AllocEntry *e2 = &entries[i+1];
458
459                bool swap = e1->size < e2->size;
460                if (e1->size == e2->size) {
461                    for(size_t j = 0; j < backtraceSize; j++) {
462                        if (e1->backtrace[j] == e2->backtrace[j]) {
463                            continue;
464                        }
465                        swap = e1->backtrace[j] < e2->backtrace[j];
466                        break;
467                    }
468                }
469                if (swap) {
470                    AllocEntry t = entries[i];
471                    entries[i] = entries[i+1];
472                    entries[i+1] = t;
473                    moved = true;
474                }
475            }
476        } while (moved);
477
478        for (size_t i = 0; i < count; i++) {
479            AllocEntry *e = &entries[i];
480
481            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
482            result.append(buffer);
483            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
484                if (ct) {
485                    result.append(", ");
486                }
487                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
488                result.append(buffer);
489            }
490            result.append("\n");
491        }
492
493        delete[] entries;
494        free_malloc_leak_info(info);
495    }
496
497    write(fd, result.string(), result.size());
498}
499#endif
500
501status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
502{
503    const size_t SIZE = 256;
504    char buffer[SIZE];
505    String8 result;
506    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
507        snprintf(buffer, SIZE, "Permission Denial: "
508                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
509                IPCThreadState::self()->getCallingPid(),
510                IPCThreadState::self()->getCallingUid());
511        result.append(buffer);
512    } else {
513        Mutex::Autolock lock(mLock);
514        for (int i = 0, n = mClients.size(); i < n; ++i) {
515            sp<Client> c = mClients[i].promote();
516            if (c != 0) c->dump(fd, args);
517        }
518        if (mMediaRecorderClients.size() == 0) {
519                result.append(" No media recorder client\n\n");
520        } else {
521            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
522                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
523                snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
524                result.append(buffer);
525                write(fd, result.string(), result.size());
526                result = "\n";
527                c->dump(fd, args);
528            }
529        }
530
531        result.append(" Files opened and/or mapped:\n");
532        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
533        FILE *f = fopen(buffer, "r");
534        if (f) {
535            while (!feof(f)) {
536                fgets(buffer, SIZE, f);
537                if (strstr(buffer, " /mnt/sdcard/") ||
538                    strstr(buffer, " /system/sounds/") ||
539                    strstr(buffer, " /data/") ||
540                    strstr(buffer, " /system/media/")) {
541                    result.append("  ");
542                    result.append(buffer);
543                }
544            }
545            fclose(f);
546        } else {
547            result.append("couldn't open ");
548            result.append(buffer);
549            result.append("\n");
550        }
551
552        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
553        DIR *d = opendir(buffer);
554        if (d) {
555            struct dirent *ent;
556            while((ent = readdir(d)) != NULL) {
557                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
558                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
559                    struct stat s;
560                    if (lstat(buffer, &s) == 0) {
561                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
562                            char linkto[256];
563                            int len = readlink(buffer, linkto, sizeof(linkto));
564                            if(len > 0) {
565                                if(len > 255) {
566                                    linkto[252] = '.';
567                                    linkto[253] = '.';
568                                    linkto[254] = '.';
569                                    linkto[255] = 0;
570                                } else {
571                                    linkto[len] = 0;
572                                }
573                                if (strstr(linkto, "/mnt/sdcard/") == linkto ||
574                                    strstr(linkto, "/system/sounds/") == linkto ||
575                                    strstr(linkto, "/data/") == linkto ||
576                                    strstr(linkto, "/system/media/") == linkto) {
577                                    result.append("  ");
578                                    result.append(buffer);
579                                    result.append(" -> ");
580                                    result.append(linkto);
581                                    result.append("\n");
582                                }
583                            }
584                        } else {
585                            result.append("  unexpected type for ");
586                            result.append(buffer);
587                            result.append("\n");
588                        }
589                    }
590                }
591            }
592            closedir(d);
593        } else {
594            result.append("couldn't open ");
595            result.append(buffer);
596            result.append("\n");
597        }
598
599#if defined(__arm__)
600        bool dumpMem = false;
601        for (size_t i = 0; i < args.size(); i++) {
602            if (args[i] == String16("-m")) {
603                dumpMem = true;
604            }
605        }
606        if (dumpMem) {
607            memStatus(fd, args);
608        }
609#endif
610    }
611    write(fd, result.string(), result.size());
612    return NO_ERROR;
613}
614
615void MediaPlayerService::removeClient(wp<Client> client)
616{
617    Mutex::Autolock lock(mLock);
618    mClients.remove(client);
619}
620
621MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
622        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
623{
624    LOGV("Client(%d) constructor", connId);
625    mPid = pid;
626    mConnId = connId;
627    mService = service;
628    mClient = client;
629    mLoop = false;
630    mStatus = NO_INIT;
631    mAudioSessionId = audioSessionId;
632
633#if CALLBACK_ANTAGONIZER
634    LOGD("create Antagonizer");
635    mAntagonizer = new Antagonizer(notify, this);
636#endif
637}
638
639MediaPlayerService::Client::~Client()
640{
641    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
642    mAudioOutput.clear();
643    wp<Client> client(this);
644    disconnect();
645    mService->removeClient(client);
646}
647
648void MediaPlayerService::Client::disconnect()
649{
650    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
651    // grab local reference and clear main reference to prevent future
652    // access to object
653    sp<MediaPlayerBase> p;
654    {
655        Mutex::Autolock l(mLock);
656        p = mPlayer;
657    }
658    mClient.clear();
659
660    mPlayer.clear();
661
662    // clear the notification to prevent callbacks to dead client
663    // and reset the player. We assume the player will serialize
664    // access to itself if necessary.
665    if (p != 0) {
666        p->setNotifyCallback(0, 0);
667#if CALLBACK_ANTAGONIZER
668        LOGD("kill Antagonizer");
669        mAntagonizer->kill();
670#endif
671        p->reset();
672    }
673
674    IPCThreadState::self()->flushCommands();
675}
676
677static player_type getDefaultPlayerType() {
678    return STAGEFRIGHT_PLAYER;
679}
680
681player_type getPlayerType(int fd, int64_t offset, int64_t length)
682{
683    char buf[20];
684    lseek(fd, offset, SEEK_SET);
685    read(fd, buf, sizeof(buf));
686    lseek(fd, offset, SEEK_SET);
687
688    long ident = *((long*)buf);
689
690    // Ogg vorbis?
691    if (ident == 0x5367674f) // 'OggS'
692        return STAGEFRIGHT_PLAYER;
693
694#ifndef NO_OPENCORE
695    if (ident == 0x75b22630) {
696        // The magic number for .asf files, i.e. wmv and wma content.
697        // These are not currently supported through stagefright.
698        return PV_PLAYER;
699    }
700#endif
701
702    // Some kind of MIDI?
703    EAS_DATA_HANDLE easdata;
704    if (EAS_Init(&easdata) == EAS_SUCCESS) {
705        EAS_FILE locator;
706        locator.path = NULL;
707        locator.fd = fd;
708        locator.offset = offset;
709        locator.length = length;
710        EAS_HANDLE  eashandle;
711        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
712            EAS_CloseFile(easdata, eashandle);
713            EAS_Shutdown(easdata);
714            return SONIVOX_PLAYER;
715        }
716        EAS_Shutdown(easdata);
717    }
718
719    return getDefaultPlayerType();
720}
721
722player_type getPlayerType(const char* url)
723{
724    if (TestPlayerStub::canBeUsed(url)) {
725        return TEST_PLAYER;
726    }
727
728    // use MidiFile for MIDI extensions
729    int lenURL = strlen(url);
730    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
731        int len = strlen(FILE_EXTS[i].extension);
732        int start = lenURL - len;
733        if (start > 0) {
734            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
735                return FILE_EXTS[i].playertype;
736            }
737        }
738    }
739
740    if (!strncasecmp(url, "rtsp://", 7)) {
741        char value[PROPERTY_VALUE_MAX];
742        if (property_get("media.stagefright.enable-rtsp", value, NULL)
743            && (strcmp(value, "1") && strcasecmp(value, "true"))) {
744            // For now, we're going to use PV for rtsp-based playback
745            // by default until we can clear up a few more issues.
746            return PV_PLAYER;
747        }
748    }
749
750    return getDefaultPlayerType();
751}
752
753static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
754        notify_callback_f notifyFunc)
755{
756    sp<MediaPlayerBase> p;
757    switch (playerType) {
758#ifndef NO_OPENCORE
759        case PV_PLAYER:
760            LOGV(" create PVPlayer");
761            p = new PVPlayer();
762            break;
763#endif
764        case SONIVOX_PLAYER:
765            LOGV(" create MidiFile");
766            p = new MidiFile();
767            break;
768        case STAGEFRIGHT_PLAYER:
769            LOGV(" create StagefrightPlayer");
770            p = new StagefrightPlayer;
771            break;
772        case TEST_PLAYER:
773            LOGV("Create Test Player stub");
774            p = new TestPlayerStub();
775            break;
776    }
777    if (p != NULL) {
778        if (p->initCheck() == NO_ERROR) {
779            p->setNotifyCallback(cookie, notifyFunc);
780        } else {
781            p.clear();
782        }
783    }
784    if (p == NULL) {
785        LOGE("Failed to create player object");
786    }
787    return p;
788}
789
790sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
791{
792    // determine if we have the right player type
793    sp<MediaPlayerBase> p = mPlayer;
794    if ((p != NULL) && (p->playerType() != playerType)) {
795        LOGV("delete player");
796        p.clear();
797    }
798    if (p == NULL) {
799        p = android::createPlayer(playerType, this, notify);
800    }
801    return p;
802}
803
804status_t MediaPlayerService::Client::setDataSource(
805        const char *url, const KeyedVector<String8, String8> *headers)
806{
807    LOGV("setDataSource(%s)", url);
808    if (url == NULL)
809        return UNKNOWN_ERROR;
810
811    if (strncmp(url, "content://", 10) == 0) {
812        // get a filedescriptor for the content Uri and
813        // pass it to the setDataSource(fd) method
814
815        String16 url16(url);
816        int fd = android::openContentProviderFile(url16);
817        if (fd < 0)
818        {
819            LOGE("Couldn't open fd for %s", url);
820            return UNKNOWN_ERROR;
821        }
822        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
823        close(fd);
824        return mStatus;
825    } else {
826        player_type playerType = getPlayerType(url);
827        LOGV("player type = %d", playerType);
828
829        // create the right type of player
830        sp<MediaPlayerBase> p = createPlayer(playerType);
831        if (p == NULL) return NO_INIT;
832
833        if (!p->hardwareOutput()) {
834            mAudioOutput = new AudioOutput(mAudioSessionId);
835            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
836        }
837
838        // now set data source
839        LOGV(" setDataSource");
840        mStatus = p->setDataSource(url, headers);
841        if (mStatus == NO_ERROR) {
842            mPlayer = p;
843        } else {
844            LOGE("  error: %d", mStatus);
845        }
846        return mStatus;
847    }
848}
849
850status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
851{
852    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
853    struct stat sb;
854    int ret = fstat(fd, &sb);
855    if (ret != 0) {
856        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
857        return UNKNOWN_ERROR;
858    }
859
860    LOGV("st_dev  = %llu", sb.st_dev);
861    LOGV("st_mode = %u", sb.st_mode);
862    LOGV("st_uid  = %lu", sb.st_uid);
863    LOGV("st_gid  = %lu", sb.st_gid);
864    LOGV("st_size = %llu", sb.st_size);
865
866    if (offset >= sb.st_size) {
867        LOGE("offset error");
868        ::close(fd);
869        return UNKNOWN_ERROR;
870    }
871    if (offset + length > sb.st_size) {
872        length = sb.st_size - offset;
873        LOGV("calculated length = %lld", length);
874    }
875
876    player_type playerType = getPlayerType(fd, offset, length);
877    LOGV("player type = %d", playerType);
878
879    // create the right type of player
880    sp<MediaPlayerBase> p = createPlayer(playerType);
881    if (p == NULL) return NO_INIT;
882
883    if (!p->hardwareOutput()) {
884        mAudioOutput = new AudioOutput(mAudioSessionId);
885        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
886    }
887
888    // now set data source
889    mStatus = p->setDataSource(fd, offset, length);
890    if (mStatus == NO_ERROR) mPlayer = p;
891    return mStatus;
892}
893
894status_t MediaPlayerService::Client::setVideoISurface(const sp<ISurface>& surface)
895{
896    LOGV("[%d] setVideoISurface(%p)", mConnId, surface.get());
897    sp<MediaPlayerBase> p = getPlayer();
898    if (p == 0) return UNKNOWN_ERROR;
899    return p->setVideoISurface(surface);
900}
901
902status_t MediaPlayerService::Client::setVideoSurface(const sp<Surface>& surface)
903{
904    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
905    sp<MediaPlayerBase> p = getPlayer();
906    if (p == 0) return UNKNOWN_ERROR;
907    return p->setVideoSurface(surface);
908}
909
910status_t MediaPlayerService::Client::invoke(const Parcel& request,
911                                            Parcel *reply)
912{
913    sp<MediaPlayerBase> p = getPlayer();
914    if (p == NULL) return UNKNOWN_ERROR;
915    return p->invoke(request, reply);
916}
917
918// This call doesn't need to access the native player.
919status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
920{
921    status_t status;
922    media::Metadata::Filter allow, drop;
923
924    if (unmarshallFilter(filter, &allow, &status) &&
925        unmarshallFilter(filter, &drop, &status)) {
926        Mutex::Autolock lock(mLock);
927
928        mMetadataAllow = allow;
929        mMetadataDrop = drop;
930    }
931    return status;
932}
933
934status_t MediaPlayerService::Client::getMetadata(
935        bool update_only, bool apply_filter, Parcel *reply)
936{
937    sp<MediaPlayerBase> player = getPlayer();
938    if (player == 0) return UNKNOWN_ERROR;
939
940    status_t status;
941    // Placeholder for the return code, updated by the caller.
942    reply->writeInt32(-1);
943
944    media::Metadata::Filter ids;
945
946    // We don't block notifications while we fetch the data. We clear
947    // mMetadataUpdated first so we don't lose notifications happening
948    // during the rest of this call.
949    {
950        Mutex::Autolock lock(mLock);
951        if (update_only) {
952            ids = mMetadataUpdated;
953        }
954        mMetadataUpdated.clear();
955    }
956
957    media::Metadata metadata(reply);
958
959    metadata.appendHeader();
960    status = player->getMetadata(ids, reply);
961
962    if (status != OK) {
963        metadata.resetParcel();
964        LOGE("getMetadata failed %d", status);
965        return status;
966    }
967
968    // FIXME: Implement filtering on the result. Not critical since
969    // filtering takes place on the update notifications already. This
970    // would be when all the metadata are fetch and a filter is set.
971
972    // Everything is fine, update the metadata length.
973    metadata.updateLength();
974    return OK;
975}
976
977status_t MediaPlayerService::Client::prepareAsync()
978{
979    LOGV("[%d] prepareAsync", mConnId);
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    status_t ret = p->prepareAsync();
983#if CALLBACK_ANTAGONIZER
984    LOGD("start Antagonizer");
985    if (ret == NO_ERROR) mAntagonizer->start();
986#endif
987    return ret;
988}
989
990status_t MediaPlayerService::Client::start()
991{
992    LOGV("[%d] start", mConnId);
993    sp<MediaPlayerBase> p = getPlayer();
994    if (p == 0) return UNKNOWN_ERROR;
995    p->setLooping(mLoop);
996    return p->start();
997}
998
999status_t MediaPlayerService::Client::stop()
1000{
1001    LOGV("[%d] stop", mConnId);
1002    sp<MediaPlayerBase> p = getPlayer();
1003    if (p == 0) return UNKNOWN_ERROR;
1004    return p->stop();
1005}
1006
1007status_t MediaPlayerService::Client::pause()
1008{
1009    LOGV("[%d] pause", mConnId);
1010    sp<MediaPlayerBase> p = getPlayer();
1011    if (p == 0) return UNKNOWN_ERROR;
1012    return p->pause();
1013}
1014
1015status_t MediaPlayerService::Client::isPlaying(bool* state)
1016{
1017    *state = false;
1018    sp<MediaPlayerBase> p = getPlayer();
1019    if (p == 0) return UNKNOWN_ERROR;
1020    *state = p->isPlaying();
1021    LOGV("[%d] isPlaying: %d", mConnId, *state);
1022    return NO_ERROR;
1023}
1024
1025status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1026{
1027    LOGV("getCurrentPosition");
1028    sp<MediaPlayerBase> p = getPlayer();
1029    if (p == 0) return UNKNOWN_ERROR;
1030    status_t ret = p->getCurrentPosition(msec);
1031    if (ret == NO_ERROR) {
1032        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1033    } else {
1034        LOGE("getCurrentPosition returned %d", ret);
1035    }
1036    return ret;
1037}
1038
1039status_t MediaPlayerService::Client::getDuration(int *msec)
1040{
1041    LOGV("getDuration");
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    status_t ret = p->getDuration(msec);
1045    if (ret == NO_ERROR) {
1046        LOGV("[%d] getDuration = %d", mConnId, *msec);
1047    } else {
1048        LOGE("getDuration returned %d", ret);
1049    }
1050    return ret;
1051}
1052
1053status_t MediaPlayerService::Client::seekTo(int msec)
1054{
1055    LOGV("[%d] seekTo(%d)", mConnId, msec);
1056    sp<MediaPlayerBase> p = getPlayer();
1057    if (p == 0) return UNKNOWN_ERROR;
1058    return p->seekTo(msec);
1059}
1060
1061status_t MediaPlayerService::Client::reset()
1062{
1063    LOGV("[%d] reset", mConnId);
1064    sp<MediaPlayerBase> p = getPlayer();
1065    if (p == 0) return UNKNOWN_ERROR;
1066    return p->reset();
1067}
1068
1069status_t MediaPlayerService::Client::setAudioStreamType(int type)
1070{
1071    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1072    // TODO: for hardware output, call player instead
1073    Mutex::Autolock l(mLock);
1074    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1075    return NO_ERROR;
1076}
1077
1078status_t MediaPlayerService::Client::setLooping(int loop)
1079{
1080    LOGV("[%d] setLooping(%d)", mConnId, loop);
1081    mLoop = loop;
1082    sp<MediaPlayerBase> p = getPlayer();
1083    if (p != 0) return p->setLooping(loop);
1084    return NO_ERROR;
1085}
1086
1087status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1088{
1089    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1090    // TODO: for hardware output, call player instead
1091    Mutex::Autolock l(mLock);
1092    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1093    return NO_ERROR;
1094}
1095
1096status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1097{
1098    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1099    Mutex::Autolock l(mLock);
1100    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1101    return NO_ERROR;
1102}
1103
1104status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1105{
1106    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1107    Mutex::Autolock l(mLock);
1108    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1109    return NO_ERROR;
1110}
1111
1112void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1113{
1114    Client* client = static_cast<Client*>(cookie);
1115
1116    if (MEDIA_INFO == msg &&
1117        MEDIA_INFO_METADATA_UPDATE == ext1) {
1118        const media::Metadata::Type metadata_type = ext2;
1119
1120        if(client->shouldDropMetadata(metadata_type)) {
1121            return;
1122        }
1123
1124        // Update the list of metadata that have changed. getMetadata
1125        // also access mMetadataUpdated and clears it.
1126        client->addNewMetadataUpdate(metadata_type);
1127    }
1128    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1129    client->mClient->notify(msg, ext1, ext2);
1130}
1131
1132
1133bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1134{
1135    Mutex::Autolock lock(mLock);
1136
1137    if (findMetadata(mMetadataDrop, code)) {
1138        return true;
1139    }
1140
1141    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1142        return false;
1143    } else {
1144        return true;
1145    }
1146}
1147
1148
1149void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1150    Mutex::Autolock lock(mLock);
1151    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1152        mMetadataUpdated.add(metadata_type);
1153    }
1154}
1155
1156#if CALLBACK_ANTAGONIZER
1157const int Antagonizer::interval = 10000; // 10 msecs
1158
1159Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1160    mExit(false), mActive(false), mClient(client), mCb(cb)
1161{
1162    createThread(callbackThread, this);
1163}
1164
1165void Antagonizer::kill()
1166{
1167    Mutex::Autolock _l(mLock);
1168    mActive = false;
1169    mExit = true;
1170    mCondition.wait(mLock);
1171}
1172
1173int Antagonizer::callbackThread(void* user)
1174{
1175    LOGD("Antagonizer started");
1176    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1177    while (!p->mExit) {
1178        if (p->mActive) {
1179            LOGV("send event");
1180            p->mCb(p->mClient, 0, 0, 0);
1181        }
1182        usleep(interval);
1183    }
1184    Mutex::Autolock _l(p->mLock);
1185    p->mCondition.signal();
1186    LOGD("Antagonizer stopped");
1187    return 0;
1188}
1189#endif
1190
1191static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1192
1193sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1194{
1195    LOGV("decode(%s)", url);
1196    sp<MemoryBase> mem;
1197    sp<MediaPlayerBase> player;
1198
1199    // Protect our precious, precious DRMd ringtones by only allowing
1200    // decoding of http, but not filesystem paths or content Uris.
1201    // If the application wants to decode those, it should open a
1202    // filedescriptor for them and use that.
1203    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1204        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1205        return mem;
1206    }
1207
1208    player_type playerType = getPlayerType(url);
1209    LOGV("player type = %d", playerType);
1210
1211    // create the right type of player
1212    sp<AudioCache> cache = new AudioCache(url);
1213    player = android::createPlayer(playerType, cache.get(), cache->notify);
1214    if (player == NULL) goto Exit;
1215    if (player->hardwareOutput()) goto Exit;
1216
1217    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1218
1219    // set data source
1220    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1221
1222    LOGV("prepare");
1223    player->prepareAsync();
1224
1225    LOGV("wait for prepare");
1226    if (cache->wait() != NO_ERROR) goto Exit;
1227
1228    LOGV("start");
1229    player->start();
1230
1231    LOGV("wait for playback complete");
1232    if (cache->wait() != NO_ERROR) goto Exit;
1233
1234    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1235    *pSampleRate = cache->sampleRate();
1236    *pNumChannels = cache->channelCount();
1237    *pFormat = cache->format();
1238    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1239
1240Exit:
1241    if (player != 0) player->reset();
1242    return mem;
1243}
1244
1245sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1246{
1247    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1248    sp<MemoryBase> mem;
1249    sp<MediaPlayerBase> player;
1250
1251    player_type playerType = getPlayerType(fd, offset, length);
1252    LOGV("player type = %d", playerType);
1253
1254    // create the right type of player
1255    sp<AudioCache> cache = new AudioCache("decode_fd");
1256    player = android::createPlayer(playerType, cache.get(), cache->notify);
1257    if (player == NULL) goto Exit;
1258    if (player->hardwareOutput()) goto Exit;
1259
1260    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1261
1262    // set data source
1263    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1264
1265    LOGV("prepare");
1266    player->prepareAsync();
1267
1268    LOGV("wait for prepare");
1269    if (cache->wait() != NO_ERROR) goto Exit;
1270
1271    LOGV("start");
1272    player->start();
1273
1274    LOGV("wait for playback complete");
1275    if (cache->wait() != NO_ERROR) goto Exit;
1276
1277    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1278    *pSampleRate = cache->sampleRate();
1279    *pNumChannels = cache->channelCount();
1280    *pFormat = cache->format();
1281    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1282
1283Exit:
1284    if (player != 0) player->reset();
1285    ::close(fd);
1286    return mem;
1287}
1288
1289
1290#undef LOG_TAG
1291#define LOG_TAG "AudioSink"
1292MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1293    : mCallback(NULL),
1294      mCallbackCookie(NULL),
1295      mSessionId(sessionId) {
1296    LOGV("AudioOutput(%d)", sessionId);
1297    mTrack = 0;
1298    mStreamType = AudioSystem::MUSIC;
1299    mLeftVolume = 1.0;
1300    mRightVolume = 1.0;
1301    mLatency = 0;
1302    mMsecsPerFrame = 0;
1303    mAuxEffectId = 0;
1304    mSendLevel = 0.0;
1305    setMinBufferCount();
1306}
1307
1308MediaPlayerService::AudioOutput::~AudioOutput()
1309{
1310    close();
1311}
1312
1313void MediaPlayerService::AudioOutput::setMinBufferCount()
1314{
1315    char value[PROPERTY_VALUE_MAX];
1316    if (property_get("ro.kernel.qemu", value, 0)) {
1317        mIsOnEmulator = true;
1318        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1319    }
1320}
1321
1322bool MediaPlayerService::AudioOutput::isOnEmulator()
1323{
1324    setMinBufferCount();
1325    return mIsOnEmulator;
1326}
1327
1328int MediaPlayerService::AudioOutput::getMinBufferCount()
1329{
1330    setMinBufferCount();
1331    return mMinBufferCount;
1332}
1333
1334ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1335{
1336    if (mTrack == 0) return NO_INIT;
1337    return mTrack->frameCount() * frameSize();
1338}
1339
1340ssize_t MediaPlayerService::AudioOutput::frameCount() const
1341{
1342    if (mTrack == 0) return NO_INIT;
1343    return mTrack->frameCount();
1344}
1345
1346ssize_t MediaPlayerService::AudioOutput::channelCount() const
1347{
1348    if (mTrack == 0) return NO_INIT;
1349    return mTrack->channelCount();
1350}
1351
1352ssize_t MediaPlayerService::AudioOutput::frameSize() const
1353{
1354    if (mTrack == 0) return NO_INIT;
1355    return mTrack->frameSize();
1356}
1357
1358uint32_t MediaPlayerService::AudioOutput::latency () const
1359{
1360    return mLatency;
1361}
1362
1363float MediaPlayerService::AudioOutput::msecsPerFrame() const
1364{
1365    return mMsecsPerFrame;
1366}
1367
1368status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1369{
1370    if (mTrack == 0) return NO_INIT;
1371    return mTrack->getPosition(position);
1372}
1373
1374status_t MediaPlayerService::AudioOutput::open(
1375        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1376        AudioCallback cb, void *cookie)
1377{
1378    mCallback = cb;
1379    mCallbackCookie = cookie;
1380
1381    // Check argument "bufferCount" against the mininum buffer count
1382    if (bufferCount < mMinBufferCount) {
1383        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1384        bufferCount = mMinBufferCount;
1385
1386    }
1387    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1388    if (mTrack) close();
1389    int afSampleRate;
1390    int afFrameCount;
1391    int frameCount;
1392
1393    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1394        return NO_INIT;
1395    }
1396    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1397        return NO_INIT;
1398    }
1399
1400    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1401
1402    AudioTrack *t;
1403    if (mCallback != NULL) {
1404        t = new AudioTrack(
1405                mStreamType,
1406                sampleRate,
1407                format,
1408                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1409                frameCount,
1410                0 /* flags */,
1411                CallbackWrapper,
1412                this,
1413                0,
1414                mSessionId);
1415    } else {
1416        t = new AudioTrack(
1417                mStreamType,
1418                sampleRate,
1419                format,
1420                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1421                frameCount,
1422                0,
1423                NULL,
1424                NULL,
1425                0,
1426                mSessionId);
1427    }
1428
1429    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1430        LOGE("Unable to create audio track");
1431        delete t;
1432        return NO_INIT;
1433    }
1434
1435    LOGV("setVolume");
1436    t->setVolume(mLeftVolume, mRightVolume);
1437
1438    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1439    mLatency = t->latency();
1440    mTrack = t;
1441
1442    t->setAuxEffectSendLevel(mSendLevel);
1443    return t->attachAuxEffect(mAuxEffectId);;
1444}
1445
1446void MediaPlayerService::AudioOutput::start()
1447{
1448    LOGV("start");
1449    if (mTrack) {
1450        mTrack->setVolume(mLeftVolume, mRightVolume);
1451        mTrack->setAuxEffectSendLevel(mSendLevel);
1452        mTrack->start();
1453    }
1454}
1455
1456
1457
1458ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1459{
1460    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1461
1462    //LOGV("write(%p, %u)", buffer, size);
1463    if (mTrack) {
1464        ssize_t ret = mTrack->write(buffer, size);
1465        return ret;
1466    }
1467    return NO_INIT;
1468}
1469
1470void MediaPlayerService::AudioOutput::stop()
1471{
1472    LOGV("stop");
1473    if (mTrack) mTrack->stop();
1474}
1475
1476void MediaPlayerService::AudioOutput::flush()
1477{
1478    LOGV("flush");
1479    if (mTrack) mTrack->flush();
1480}
1481
1482void MediaPlayerService::AudioOutput::pause()
1483{
1484    LOGV("pause");
1485    if (mTrack) mTrack->pause();
1486}
1487
1488void MediaPlayerService::AudioOutput::close()
1489{
1490    LOGV("close");
1491    delete mTrack;
1492    mTrack = 0;
1493}
1494
1495void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1496{
1497    LOGV("setVolume(%f, %f)", left, right);
1498    mLeftVolume = left;
1499    mRightVolume = right;
1500    if (mTrack) {
1501        mTrack->setVolume(left, right);
1502    }
1503}
1504
1505status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1506{
1507    LOGV("setAuxEffectSendLevel(%f)", level);
1508    mSendLevel = level;
1509    if (mTrack) {
1510        return mTrack->setAuxEffectSendLevel(level);
1511    }
1512    return NO_ERROR;
1513}
1514
1515status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1516{
1517    LOGV("attachAuxEffect(%d)", effectId);
1518    mAuxEffectId = effectId;
1519    if (mTrack) {
1520        return mTrack->attachAuxEffect(effectId);
1521    }
1522    return NO_ERROR;
1523}
1524
1525// static
1526void MediaPlayerService::AudioOutput::CallbackWrapper(
1527        int event, void *cookie, void *info) {
1528    //LOGV("callbackwrapper");
1529    if (event != AudioTrack::EVENT_MORE_DATA) {
1530        return;
1531    }
1532
1533    AudioOutput *me = (AudioOutput *)cookie;
1534    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1535
1536    size_t actualSize = (*me->mCallback)(
1537            me, buffer->raw, buffer->size, me->mCallbackCookie);
1538
1539    buffer->size = actualSize;
1540
1541}
1542
1543int MediaPlayerService::AudioOutput::getSessionId()
1544{
1545    return mSessionId;
1546}
1547
1548#undef LOG_TAG
1549#define LOG_TAG "AudioCache"
1550MediaPlayerService::AudioCache::AudioCache(const char* name) :
1551    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1552    mError(NO_ERROR), mCommandComplete(false)
1553{
1554    // create ashmem heap
1555    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1556}
1557
1558uint32_t MediaPlayerService::AudioCache::latency () const
1559{
1560    return 0;
1561}
1562
1563float MediaPlayerService::AudioCache::msecsPerFrame() const
1564{
1565    return mMsecsPerFrame;
1566}
1567
1568status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1569{
1570    if (position == 0) return BAD_VALUE;
1571    *position = mSize;
1572    return NO_ERROR;
1573}
1574
1575////////////////////////////////////////////////////////////////////////////////
1576
1577struct CallbackThread : public Thread {
1578    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1579                   MediaPlayerBase::AudioSink::AudioCallback cb,
1580                   void *cookie);
1581
1582protected:
1583    virtual ~CallbackThread();
1584
1585    virtual bool threadLoop();
1586
1587private:
1588    wp<MediaPlayerBase::AudioSink> mSink;
1589    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1590    void *mCookie;
1591    void *mBuffer;
1592    size_t mBufferSize;
1593
1594    CallbackThread(const CallbackThread &);
1595    CallbackThread &operator=(const CallbackThread &);
1596};
1597
1598CallbackThread::CallbackThread(
1599        const wp<MediaPlayerBase::AudioSink> &sink,
1600        MediaPlayerBase::AudioSink::AudioCallback cb,
1601        void *cookie)
1602    : mSink(sink),
1603      mCallback(cb),
1604      mCookie(cookie),
1605      mBuffer(NULL),
1606      mBufferSize(0) {
1607}
1608
1609CallbackThread::~CallbackThread() {
1610    if (mBuffer) {
1611        free(mBuffer);
1612        mBuffer = NULL;
1613    }
1614}
1615
1616bool CallbackThread::threadLoop() {
1617    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1618    if (sink == NULL) {
1619        return false;
1620    }
1621
1622    if (mBuffer == NULL) {
1623        mBufferSize = sink->bufferSize();
1624        mBuffer = malloc(mBufferSize);
1625    }
1626
1627    size_t actualSize =
1628        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1629
1630    if (actualSize > 0) {
1631        sink->write(mBuffer, actualSize);
1632    }
1633
1634    return true;
1635}
1636
1637////////////////////////////////////////////////////////////////////////////////
1638
1639status_t MediaPlayerService::AudioCache::open(
1640        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1641        AudioCallback cb, void *cookie)
1642{
1643    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1644    if (mHeap->getHeapID() < 0) {
1645        return NO_INIT;
1646    }
1647
1648    mSampleRate = sampleRate;
1649    mChannelCount = (uint16_t)channelCount;
1650    mFormat = (uint16_t)format;
1651    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1652
1653    if (cb != NULL) {
1654        mCallbackThread = new CallbackThread(this, cb, cookie);
1655    }
1656    return NO_ERROR;
1657}
1658
1659void MediaPlayerService::AudioCache::start() {
1660    if (mCallbackThread != NULL) {
1661        mCallbackThread->run("AudioCache callback");
1662    }
1663}
1664
1665void MediaPlayerService::AudioCache::stop() {
1666    if (mCallbackThread != NULL) {
1667        mCallbackThread->requestExitAndWait();
1668    }
1669}
1670
1671ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1672{
1673    LOGV("write(%p, %u)", buffer, size);
1674    if ((buffer == 0) || (size == 0)) return size;
1675
1676    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1677    if (p == NULL) return NO_INIT;
1678    p += mSize;
1679    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1680    if (mSize + size > mHeap->getSize()) {
1681        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1682        size = mHeap->getSize() - mSize;
1683    }
1684    memcpy(p, buffer, size);
1685    mSize += size;
1686    return size;
1687}
1688
1689// call with lock held
1690status_t MediaPlayerService::AudioCache::wait()
1691{
1692    Mutex::Autolock lock(mLock);
1693    while (!mCommandComplete) {
1694        mSignal.wait(mLock);
1695    }
1696    mCommandComplete = false;
1697
1698    if (mError == NO_ERROR) {
1699        LOGV("wait - success");
1700    } else {
1701        LOGV("wait - error");
1702    }
1703    return mError;
1704}
1705
1706void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1707{
1708    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1709    AudioCache* p = static_cast<AudioCache*>(cookie);
1710
1711    // ignore buffering messages
1712    switch (msg)
1713    {
1714    case MEDIA_ERROR:
1715        LOGE("Error %d, %d occurred", ext1, ext2);
1716        p->mError = ext1;
1717        break;
1718    case MEDIA_PREPARED:
1719        LOGV("prepared");
1720        break;
1721    case MEDIA_PLAYBACK_COMPLETE:
1722        LOGV("playback complete");
1723        break;
1724    default:
1725        LOGV("ignored");
1726        return;
1727    }
1728
1729    // wake up thread
1730    Mutex::Autolock lock(p->mLock);
1731    p->mCommandComplete = true;
1732    p->mSignal.signal();
1733}
1734
1735int MediaPlayerService::AudioCache::getSessionId()
1736{
1737    return 0;
1738}
1739
1740} // namespace android
1741