MediaPlayerService.cpp revision dd0f7a7127fdb04863b4ad66d2b846ee94358314 
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, " /sdcard/") ||
538                    strstr(buffer, " /system/sounds/") ||
539                    strstr(buffer, " /system/media/")) {
540                    result.append("  ");
541                    result.append(buffer);
542                }
543            }
544            fclose(f);
545        } else {
546            result.append("couldn't open ");
547            result.append(buffer);
548            result.append("\n");
549        }
550
551        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
552        DIR *d = opendir(buffer);
553        if (d) {
554            struct dirent *ent;
555            while((ent = readdir(d)) != NULL) {
556                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
557                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
558                    struct stat s;
559                    if (lstat(buffer, &s) == 0) {
560                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
561                            char linkto[256];
562                            int len = readlink(buffer, linkto, sizeof(linkto));
563                            if(len > 0) {
564                                if(len > 255) {
565                                    linkto[252] = '.';
566                                    linkto[253] = '.';
567                                    linkto[254] = '.';
568                                    linkto[255] = 0;
569                                } else {
570                                    linkto[len] = 0;
571                                }
572                                if (strstr(linkto, "/sdcard/") == linkto ||
573                                    strstr(linkto, "/system/sounds/") == linkto ||
574                                    strstr(linkto, "/system/media/") == linkto) {
575                                    result.append("  ");
576                                    result.append(buffer);
577                                    result.append(" -> ");
578                                    result.append(linkto);
579                                    result.append("\n");
580                                }
581                            }
582                        } else {
583                            result.append("  unexpected type for ");
584                            result.append(buffer);
585                            result.append("\n");
586                        }
587                    }
588                }
589            }
590            closedir(d);
591        } else {
592            result.append("couldn't open ");
593            result.append(buffer);
594            result.append("\n");
595        }
596
597#if defined(__arm__)
598        bool dumpMem = false;
599        for (size_t i = 0; i < args.size(); i++) {
600            if (args[i] == String16("-m")) {
601                dumpMem = true;
602            }
603        }
604        if (dumpMem) {
605            memStatus(fd, args);
606        }
607#endif
608    }
609    write(fd, result.string(), result.size());
610    return NO_ERROR;
611}
612
613void MediaPlayerService::removeClient(wp<Client> client)
614{
615    Mutex::Autolock lock(mLock);
616    mClients.remove(client);
617}
618
619MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
620        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
621{
622    LOGV("Client(%d) constructor", connId);
623    mPid = pid;
624    mConnId = connId;
625    mService = service;
626    mClient = client;
627    mLoop = false;
628    mStatus = NO_INIT;
629    mAudioSessionId = audioSessionId;
630
631#if CALLBACK_ANTAGONIZER
632    LOGD("create Antagonizer");
633    mAntagonizer = new Antagonizer(notify, this);
634#endif
635}
636
637MediaPlayerService::Client::~Client()
638{
639    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
640    mAudioOutput.clear();
641    wp<Client> client(this);
642    disconnect();
643    mService->removeClient(client);
644}
645
646void MediaPlayerService::Client::disconnect()
647{
648    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
649    // grab local reference and clear main reference to prevent future
650    // access to object
651    sp<MediaPlayerBase> p;
652    {
653        Mutex::Autolock l(mLock);
654        p = mPlayer;
655    }
656    mClient.clear();
657
658    mPlayer.clear();
659
660    // clear the notification to prevent callbacks to dead client
661    // and reset the player. We assume the player will serialize
662    // access to itself if necessary.
663    if (p != 0) {
664        p->setNotifyCallback(0, 0);
665#if CALLBACK_ANTAGONIZER
666        LOGD("kill Antagonizer");
667        mAntagonizer->kill();
668#endif
669        p->reset();
670    }
671
672    IPCThreadState::self()->flushCommands();
673}
674
675static player_type getDefaultPlayerType() {
676    return STAGEFRIGHT_PLAYER;
677}
678
679player_type getPlayerType(int fd, int64_t offset, int64_t length)
680{
681    char buf[20];
682    lseek(fd, offset, SEEK_SET);
683    read(fd, buf, sizeof(buf));
684    lseek(fd, offset, SEEK_SET);
685
686    long ident = *((long*)buf);
687
688    // Ogg vorbis?
689    if (ident == 0x5367674f) // 'OggS'
690        return STAGEFRIGHT_PLAYER;
691
692#ifndef NO_OPENCORE
693    if (ident == 0x75b22630) {
694        // The magic number for .asf files, i.e. wmv and wma content.
695        // These are not currently supported through stagefright.
696        return PV_PLAYER;
697    }
698#endif
699
700    // Some kind of MIDI?
701    EAS_DATA_HANDLE easdata;
702    if (EAS_Init(&easdata) == EAS_SUCCESS) {
703        EAS_FILE locator;
704        locator.path = NULL;
705        locator.fd = fd;
706        locator.offset = offset;
707        locator.length = length;
708        EAS_HANDLE  eashandle;
709        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
710            EAS_CloseFile(easdata, eashandle);
711            EAS_Shutdown(easdata);
712            return SONIVOX_PLAYER;
713        }
714        EAS_Shutdown(easdata);
715    }
716
717    return getDefaultPlayerType();
718}
719
720player_type getPlayerType(const char* url)
721{
722    if (TestPlayerStub::canBeUsed(url)) {
723        return TEST_PLAYER;
724    }
725
726    // use MidiFile for MIDI extensions
727    int lenURL = strlen(url);
728    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
729        int len = strlen(FILE_EXTS[i].extension);
730        int start = lenURL - len;
731        if (start > 0) {
732            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
733                return FILE_EXTS[i].playertype;
734            }
735        }
736    }
737
738    if (!strncasecmp(url, "rtsp://", 7)) {
739        char value[PROPERTY_VALUE_MAX];
740        if (property_get("media.stagefright.enable-rtsp", value, NULL)
741            && (strcmp(value, "1") && strcasecmp(value, "true"))) {
742            // For now, we're going to use PV for rtsp-based playback
743            // by default until we can clear up a few more issues.
744            return PV_PLAYER;
745        }
746    }
747
748    return getDefaultPlayerType();
749}
750
751static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
752        notify_callback_f notifyFunc)
753{
754    sp<MediaPlayerBase> p;
755    switch (playerType) {
756#ifndef NO_OPENCORE
757        case PV_PLAYER:
758            LOGV(" create PVPlayer");
759            p = new PVPlayer();
760            break;
761#endif
762        case SONIVOX_PLAYER:
763            LOGV(" create MidiFile");
764            p = new MidiFile();
765            break;
766        case STAGEFRIGHT_PLAYER:
767            LOGV(" create StagefrightPlayer");
768            p = new StagefrightPlayer;
769            break;
770        case TEST_PLAYER:
771            LOGV("Create Test Player stub");
772            p = new TestPlayerStub();
773            break;
774    }
775    if (p != NULL) {
776        if (p->initCheck() == NO_ERROR) {
777            p->setNotifyCallback(cookie, notifyFunc);
778        } else {
779            p.clear();
780        }
781    }
782    if (p == NULL) {
783        LOGE("Failed to create player object");
784    }
785    return p;
786}
787
788sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
789{
790    // determine if we have the right player type
791    sp<MediaPlayerBase> p = mPlayer;
792    if ((p != NULL) && (p->playerType() != playerType)) {
793        LOGV("delete player");
794        p.clear();
795    }
796    if (p == NULL) {
797        p = android::createPlayer(playerType, this, notify);
798    }
799    return p;
800}
801
802status_t MediaPlayerService::Client::setDataSource(
803        const char *url, const KeyedVector<String8, String8> *headers)
804{
805    LOGV("setDataSource(%s)", url);
806    if (url == NULL)
807        return UNKNOWN_ERROR;
808
809    if (strncmp(url, "content://", 10) == 0) {
810        // get a filedescriptor for the content Uri and
811        // pass it to the setDataSource(fd) method
812
813        String16 url16(url);
814        int fd = android::openContentProviderFile(url16);
815        if (fd < 0)
816        {
817            LOGE("Couldn't open fd for %s", url);
818            return UNKNOWN_ERROR;
819        }
820        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
821        close(fd);
822        return mStatus;
823    } else {
824        player_type playerType = getPlayerType(url);
825        LOGV("player type = %d", playerType);
826
827        // create the right type of player
828        sp<MediaPlayerBase> p = createPlayer(playerType);
829        if (p == NULL) return NO_INIT;
830
831        if (!p->hardwareOutput()) {
832            mAudioOutput = new AudioOutput(mAudioSessionId);
833            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
834        }
835
836        // now set data source
837        LOGV(" setDataSource");
838        mStatus = p->setDataSource(url, headers);
839        if (mStatus == NO_ERROR) {
840            mPlayer = p;
841        } else {
842            LOGE("  error: %d", mStatus);
843        }
844        return mStatus;
845    }
846}
847
848status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
849{
850    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
851    struct stat sb;
852    int ret = fstat(fd, &sb);
853    if (ret != 0) {
854        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
855        return UNKNOWN_ERROR;
856    }
857
858    LOGV("st_dev  = %llu", sb.st_dev);
859    LOGV("st_mode = %u", sb.st_mode);
860    LOGV("st_uid  = %lu", sb.st_uid);
861    LOGV("st_gid  = %lu", sb.st_gid);
862    LOGV("st_size = %llu", sb.st_size);
863
864    if (offset >= sb.st_size) {
865        LOGE("offset error");
866        ::close(fd);
867        return UNKNOWN_ERROR;
868    }
869    if (offset + length > sb.st_size) {
870        length = sb.st_size - offset;
871        LOGV("calculated length = %lld", length);
872    }
873
874    player_type playerType = getPlayerType(fd, offset, length);
875    LOGV("player type = %d", playerType);
876
877    // create the right type of player
878    sp<MediaPlayerBase> p = createPlayer(playerType);
879    if (p == NULL) return NO_INIT;
880
881    if (!p->hardwareOutput()) {
882        mAudioOutput = new AudioOutput(mAudioSessionId);
883        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
884    }
885
886    // now set data source
887    mStatus = p->setDataSource(fd, offset, length);
888    if (mStatus == NO_ERROR) mPlayer = p;
889    return mStatus;
890}
891
892status_t MediaPlayerService::Client::setVideoISurface(const sp<ISurface>& surface)
893{
894    LOGV("[%d] setVideoISurface(%p)", mConnId, surface.get());
895    sp<MediaPlayerBase> p = getPlayer();
896    if (p == 0) return UNKNOWN_ERROR;
897    return p->setVideoISurface(surface);
898}
899
900status_t MediaPlayerService::Client::setVideoSurface(const sp<Surface>& surface)
901{
902    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
903    sp<MediaPlayerBase> p = getPlayer();
904    if (p == 0) return UNKNOWN_ERROR;
905    return p->setVideoSurface(surface);
906}
907
908status_t MediaPlayerService::Client::invoke(const Parcel& request,
909                                            Parcel *reply)
910{
911    sp<MediaPlayerBase> p = getPlayer();
912    if (p == NULL) return UNKNOWN_ERROR;
913    return p->invoke(request, reply);
914}
915
916// This call doesn't need to access the native player.
917status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
918{
919    status_t status;
920    media::Metadata::Filter allow, drop;
921
922    if (unmarshallFilter(filter, &allow, &status) &&
923        unmarshallFilter(filter, &drop, &status)) {
924        Mutex::Autolock lock(mLock);
925
926        mMetadataAllow = allow;
927        mMetadataDrop = drop;
928    }
929    return status;
930}
931
932status_t MediaPlayerService::Client::getMetadata(
933        bool update_only, bool apply_filter, Parcel *reply)
934{
935    sp<MediaPlayerBase> player = getPlayer();
936    if (player == 0) return UNKNOWN_ERROR;
937
938    status_t status;
939    // Placeholder for the return code, updated by the caller.
940    reply->writeInt32(-1);
941
942    media::Metadata::Filter ids;
943
944    // We don't block notifications while we fetch the data. We clear
945    // mMetadataUpdated first so we don't lose notifications happening
946    // during the rest of this call.
947    {
948        Mutex::Autolock lock(mLock);
949        if (update_only) {
950            ids = mMetadataUpdated;
951        }
952        mMetadataUpdated.clear();
953    }
954
955    media::Metadata metadata(reply);
956
957    metadata.appendHeader();
958    status = player->getMetadata(ids, reply);
959
960    if (status != OK) {
961        metadata.resetParcel();
962        LOGE("getMetadata failed %d", status);
963        return status;
964    }
965
966    // FIXME: Implement filtering on the result. Not critical since
967    // filtering takes place on the update notifications already. This
968    // would be when all the metadata are fetch and a filter is set.
969
970    // Everything is fine, update the metadata length.
971    metadata.updateLength();
972    return OK;
973}
974
975status_t MediaPlayerService::Client::suspend() {
976    sp<MediaPlayerBase> p = getPlayer();
977    if (p == 0) return UNKNOWN_ERROR;
978
979    return p->suspend();
980}
981
982status_t MediaPlayerService::Client::resume() {
983    sp<MediaPlayerBase> p = getPlayer();
984    if (p == 0) return UNKNOWN_ERROR;
985
986    return p->resume();
987}
988
989status_t MediaPlayerService::Client::prepareAsync()
990{
991    LOGV("[%d] prepareAsync", mConnId);
992    sp<MediaPlayerBase> p = getPlayer();
993    if (p == 0) return UNKNOWN_ERROR;
994    status_t ret = p->prepareAsync();
995#if CALLBACK_ANTAGONIZER
996    LOGD("start Antagonizer");
997    if (ret == NO_ERROR) mAntagonizer->start();
998#endif
999    return ret;
1000}
1001
1002status_t MediaPlayerService::Client::start()
1003{
1004    LOGV("[%d] start", mConnId);
1005    sp<MediaPlayerBase> p = getPlayer();
1006    if (p == 0) return UNKNOWN_ERROR;
1007    p->setLooping(mLoop);
1008    return p->start();
1009}
1010
1011status_t MediaPlayerService::Client::stop()
1012{
1013    LOGV("[%d] stop", mConnId);
1014    sp<MediaPlayerBase> p = getPlayer();
1015    if (p == 0) return UNKNOWN_ERROR;
1016    return p->stop();
1017}
1018
1019status_t MediaPlayerService::Client::pause()
1020{
1021    LOGV("[%d] pause", mConnId);
1022    sp<MediaPlayerBase> p = getPlayer();
1023    if (p == 0) return UNKNOWN_ERROR;
1024    return p->pause();
1025}
1026
1027status_t MediaPlayerService::Client::isPlaying(bool* state)
1028{
1029    *state = false;
1030    sp<MediaPlayerBase> p = getPlayer();
1031    if (p == 0) return UNKNOWN_ERROR;
1032    *state = p->isPlaying();
1033    LOGV("[%d] isPlaying: %d", mConnId, *state);
1034    return NO_ERROR;
1035}
1036
1037status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1038{
1039    LOGV("getCurrentPosition");
1040    sp<MediaPlayerBase> p = getPlayer();
1041    if (p == 0) return UNKNOWN_ERROR;
1042    status_t ret = p->getCurrentPosition(msec);
1043    if (ret == NO_ERROR) {
1044        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1045    } else {
1046        LOGE("getCurrentPosition returned %d", ret);
1047    }
1048    return ret;
1049}
1050
1051status_t MediaPlayerService::Client::getDuration(int *msec)
1052{
1053    LOGV("getDuration");
1054    sp<MediaPlayerBase> p = getPlayer();
1055    if (p == 0) return UNKNOWN_ERROR;
1056    status_t ret = p->getDuration(msec);
1057    if (ret == NO_ERROR) {
1058        LOGV("[%d] getDuration = %d", mConnId, *msec);
1059    } else {
1060        LOGE("getDuration returned %d", ret);
1061    }
1062    return ret;
1063}
1064
1065status_t MediaPlayerService::Client::seekTo(int msec)
1066{
1067    LOGV("[%d] seekTo(%d)", mConnId, msec);
1068    sp<MediaPlayerBase> p = getPlayer();
1069    if (p == 0) return UNKNOWN_ERROR;
1070    return p->seekTo(msec);
1071}
1072
1073status_t MediaPlayerService::Client::reset()
1074{
1075    LOGV("[%d] reset", mConnId);
1076    sp<MediaPlayerBase> p = getPlayer();
1077    if (p == 0) return UNKNOWN_ERROR;
1078    return p->reset();
1079}
1080
1081status_t MediaPlayerService::Client::setAudioStreamType(int type)
1082{
1083    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1084    // TODO: for hardware output, call player instead
1085    Mutex::Autolock l(mLock);
1086    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1087    return NO_ERROR;
1088}
1089
1090status_t MediaPlayerService::Client::setLooping(int loop)
1091{
1092    LOGV("[%d] setLooping(%d)", mConnId, loop);
1093    mLoop = loop;
1094    sp<MediaPlayerBase> p = getPlayer();
1095    if (p != 0) return p->setLooping(loop);
1096    return NO_ERROR;
1097}
1098
1099status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1100{
1101    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1102    // TODO: for hardware output, call player instead
1103    Mutex::Autolock l(mLock);
1104    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1105    return NO_ERROR;
1106}
1107
1108status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1109{
1110    LOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1111    Mutex::Autolock l(mLock);
1112    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1113    return NO_ERROR;
1114}
1115
1116status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1117{
1118    LOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1119    Mutex::Autolock l(mLock);
1120    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1121    return NO_ERROR;
1122}
1123
1124void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1125{
1126    Client* client = static_cast<Client*>(cookie);
1127
1128    if (MEDIA_INFO == msg &&
1129        MEDIA_INFO_METADATA_UPDATE == ext1) {
1130        const media::Metadata::Type metadata_type = ext2;
1131
1132        if(client->shouldDropMetadata(metadata_type)) {
1133            return;
1134        }
1135
1136        // Update the list of metadata that have changed. getMetadata
1137        // also access mMetadataUpdated and clears it.
1138        client->addNewMetadataUpdate(metadata_type);
1139    }
1140    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1141    client->mClient->notify(msg, ext1, ext2);
1142}
1143
1144
1145bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1146{
1147    Mutex::Autolock lock(mLock);
1148
1149    if (findMetadata(mMetadataDrop, code)) {
1150        return true;
1151    }
1152
1153    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1154        return false;
1155    } else {
1156        return true;
1157    }
1158}
1159
1160
1161void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1162    Mutex::Autolock lock(mLock);
1163    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1164        mMetadataUpdated.add(metadata_type);
1165    }
1166}
1167
1168#if CALLBACK_ANTAGONIZER
1169const int Antagonizer::interval = 10000; // 10 msecs
1170
1171Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1172    mExit(false), mActive(false), mClient(client), mCb(cb)
1173{
1174    createThread(callbackThread, this);
1175}
1176
1177void Antagonizer::kill()
1178{
1179    Mutex::Autolock _l(mLock);
1180    mActive = false;
1181    mExit = true;
1182    mCondition.wait(mLock);
1183}
1184
1185int Antagonizer::callbackThread(void* user)
1186{
1187    LOGD("Antagonizer started");
1188    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1189    while (!p->mExit) {
1190        if (p->mActive) {
1191            LOGV("send event");
1192            p->mCb(p->mClient, 0, 0, 0);
1193        }
1194        usleep(interval);
1195    }
1196    Mutex::Autolock _l(p->mLock);
1197    p->mCondition.signal();
1198    LOGD("Antagonizer stopped");
1199    return 0;
1200}
1201#endif
1202
1203static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1204
1205sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1206{
1207    LOGV("decode(%s)", url);
1208    sp<MemoryBase> mem;
1209    sp<MediaPlayerBase> player;
1210
1211    // Protect our precious, precious DRMd ringtones by only allowing
1212    // decoding of http, but not filesystem paths or content Uris.
1213    // If the application wants to decode those, it should open a
1214    // filedescriptor for them and use that.
1215    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1216        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1217        return mem;
1218    }
1219
1220    player_type playerType = getPlayerType(url);
1221    LOGV("player type = %d", playerType);
1222
1223    // create the right type of player
1224    sp<AudioCache> cache = new AudioCache(url);
1225    player = android::createPlayer(playerType, cache.get(), cache->notify);
1226    if (player == NULL) goto Exit;
1227    if (player->hardwareOutput()) goto Exit;
1228
1229    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1230
1231    // set data source
1232    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1233
1234    LOGV("prepare");
1235    player->prepareAsync();
1236
1237    LOGV("wait for prepare");
1238    if (cache->wait() != NO_ERROR) goto Exit;
1239
1240    LOGV("start");
1241    player->start();
1242
1243    LOGV("wait for playback complete");
1244    if (cache->wait() != NO_ERROR) goto Exit;
1245
1246    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1247    *pSampleRate = cache->sampleRate();
1248    *pNumChannels = cache->channelCount();
1249    *pFormat = cache->format();
1250    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1251
1252Exit:
1253    if (player != 0) player->reset();
1254    return mem;
1255}
1256
1257sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1258{
1259    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1260    sp<MemoryBase> mem;
1261    sp<MediaPlayerBase> player;
1262
1263    player_type playerType = getPlayerType(fd, offset, length);
1264    LOGV("player type = %d", playerType);
1265
1266    // create the right type of player
1267    sp<AudioCache> cache = new AudioCache("decode_fd");
1268    player = android::createPlayer(playerType, cache.get(), cache->notify);
1269    if (player == NULL) goto Exit;
1270    if (player->hardwareOutput()) goto Exit;
1271
1272    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1273
1274    // set data source
1275    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1276
1277    LOGV("prepare");
1278    player->prepareAsync();
1279
1280    LOGV("wait for prepare");
1281    if (cache->wait() != NO_ERROR) goto Exit;
1282
1283    LOGV("start");
1284    player->start();
1285
1286    LOGV("wait for playback complete");
1287    if (cache->wait() != NO_ERROR) goto Exit;
1288
1289    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1290    *pSampleRate = cache->sampleRate();
1291    *pNumChannels = cache->channelCount();
1292    *pFormat = cache->format();
1293    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1294
1295Exit:
1296    if (player != 0) player->reset();
1297    ::close(fd);
1298    return mem;
1299}
1300
1301
1302#undef LOG_TAG
1303#define LOG_TAG "AudioSink"
1304MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1305    : mCallback(NULL),
1306      mCallbackCookie(NULL),
1307      mSessionId(sessionId) {
1308    LOGV("AudioOutput(%d)", sessionId);
1309    mTrack = 0;
1310    mStreamType = AudioSystem::MUSIC;
1311    mLeftVolume = 1.0;
1312    mRightVolume = 1.0;
1313    mLatency = 0;
1314    mMsecsPerFrame = 0;
1315    mAuxEffectId = 0;
1316    mSendLevel = 0.0;
1317    setMinBufferCount();
1318}
1319
1320MediaPlayerService::AudioOutput::~AudioOutput()
1321{
1322    close();
1323}
1324
1325void MediaPlayerService::AudioOutput::setMinBufferCount()
1326{
1327    char value[PROPERTY_VALUE_MAX];
1328    if (property_get("ro.kernel.qemu", value, 0)) {
1329        mIsOnEmulator = true;
1330        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1331    }
1332}
1333
1334bool MediaPlayerService::AudioOutput::isOnEmulator()
1335{
1336    setMinBufferCount();
1337    return mIsOnEmulator;
1338}
1339
1340int MediaPlayerService::AudioOutput::getMinBufferCount()
1341{
1342    setMinBufferCount();
1343    return mMinBufferCount;
1344}
1345
1346ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1347{
1348    if (mTrack == 0) return NO_INIT;
1349    return mTrack->frameCount() * frameSize();
1350}
1351
1352ssize_t MediaPlayerService::AudioOutput::frameCount() const
1353{
1354    if (mTrack == 0) return NO_INIT;
1355    return mTrack->frameCount();
1356}
1357
1358ssize_t MediaPlayerService::AudioOutput::channelCount() const
1359{
1360    if (mTrack == 0) return NO_INIT;
1361    return mTrack->channelCount();
1362}
1363
1364ssize_t MediaPlayerService::AudioOutput::frameSize() const
1365{
1366    if (mTrack == 0) return NO_INIT;
1367    return mTrack->frameSize();
1368}
1369
1370uint32_t MediaPlayerService::AudioOutput::latency () const
1371{
1372    return mLatency;
1373}
1374
1375float MediaPlayerService::AudioOutput::msecsPerFrame() const
1376{
1377    return mMsecsPerFrame;
1378}
1379
1380status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1381{
1382    if (mTrack == 0) return NO_INIT;
1383    return mTrack->getPosition(position);
1384}
1385
1386status_t MediaPlayerService::AudioOutput::open(
1387        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1388        AudioCallback cb, void *cookie)
1389{
1390    mCallback = cb;
1391    mCallbackCookie = cookie;
1392
1393    // Check argument "bufferCount" against the mininum buffer count
1394    if (bufferCount < mMinBufferCount) {
1395        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1396        bufferCount = mMinBufferCount;
1397
1398    }
1399    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1400    if (mTrack) close();
1401    int afSampleRate;
1402    int afFrameCount;
1403    int frameCount;
1404
1405    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1406        return NO_INIT;
1407    }
1408    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1409        return NO_INIT;
1410    }
1411
1412    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1413
1414    AudioTrack *t;
1415    if (mCallback != NULL) {
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 /* flags */,
1423                CallbackWrapper,
1424                this,
1425                0,
1426                mSessionId);
1427    } else {
1428        t = new AudioTrack(
1429                mStreamType,
1430                sampleRate,
1431                format,
1432                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1433                frameCount,
1434                0,
1435                NULL,
1436                NULL,
1437                0,
1438                mSessionId);
1439    }
1440
1441    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1442        LOGE("Unable to create audio track");
1443        delete t;
1444        return NO_INIT;
1445    }
1446
1447    LOGV("setVolume");
1448    t->setVolume(mLeftVolume, mRightVolume);
1449
1450    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1451    mLatency = t->latency();
1452    mTrack = t;
1453
1454    t->setAuxEffectSendLevel(mSendLevel);
1455    return t->attachAuxEffect(mAuxEffectId);;
1456}
1457
1458void MediaPlayerService::AudioOutput::start()
1459{
1460    LOGV("start");
1461    if (mTrack) {
1462        mTrack->setVolume(mLeftVolume, mRightVolume);
1463        mTrack->setAuxEffectSendLevel(mSendLevel);
1464        mTrack->start();
1465    }
1466}
1467
1468
1469
1470ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1471{
1472    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1473
1474    //LOGV("write(%p, %u)", buffer, size);
1475    if (mTrack) {
1476        ssize_t ret = mTrack->write(buffer, size);
1477        return ret;
1478    }
1479    return NO_INIT;
1480}
1481
1482void MediaPlayerService::AudioOutput::stop()
1483{
1484    LOGV("stop");
1485    if (mTrack) mTrack->stop();
1486}
1487
1488void MediaPlayerService::AudioOutput::flush()
1489{
1490    LOGV("flush");
1491    if (mTrack) mTrack->flush();
1492}
1493
1494void MediaPlayerService::AudioOutput::pause()
1495{
1496    LOGV("pause");
1497    if (mTrack) mTrack->pause();
1498}
1499
1500void MediaPlayerService::AudioOutput::close()
1501{
1502    LOGV("close");
1503    delete mTrack;
1504    mTrack = 0;
1505}
1506
1507void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1508{
1509    LOGV("setVolume(%f, %f)", left, right);
1510    mLeftVolume = left;
1511    mRightVolume = right;
1512    if (mTrack) {
1513        mTrack->setVolume(left, right);
1514    }
1515}
1516
1517status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1518{
1519    LOGV("setAuxEffectSendLevel(%f)", level);
1520    mSendLevel = level;
1521    if (mTrack) {
1522        return mTrack->setAuxEffectSendLevel(level);
1523    }
1524    return NO_ERROR;
1525}
1526
1527status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1528{
1529    LOGV("attachAuxEffect(%d)", effectId);
1530    mAuxEffectId = effectId;
1531    if (mTrack) {
1532        return mTrack->attachAuxEffect(effectId);
1533    }
1534    return NO_ERROR;
1535}
1536
1537// static
1538void MediaPlayerService::AudioOutput::CallbackWrapper(
1539        int event, void *cookie, void *info) {
1540    //LOGV("callbackwrapper");
1541    if (event != AudioTrack::EVENT_MORE_DATA) {
1542        return;
1543    }
1544
1545    AudioOutput *me = (AudioOutput *)cookie;
1546    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1547
1548    size_t actualSize = (*me->mCallback)(
1549            me, buffer->raw, buffer->size, me->mCallbackCookie);
1550
1551    buffer->size = actualSize;
1552
1553}
1554
1555#undef LOG_TAG
1556#define LOG_TAG "AudioCache"
1557MediaPlayerService::AudioCache::AudioCache(const char* name) :
1558    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1559    mError(NO_ERROR), mCommandComplete(false)
1560{
1561    // create ashmem heap
1562    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1563}
1564
1565uint32_t MediaPlayerService::AudioCache::latency () const
1566{
1567    return 0;
1568}
1569
1570float MediaPlayerService::AudioCache::msecsPerFrame() const
1571{
1572    return mMsecsPerFrame;
1573}
1574
1575status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1576{
1577    if (position == 0) return BAD_VALUE;
1578    *position = mSize;
1579    return NO_ERROR;
1580}
1581
1582////////////////////////////////////////////////////////////////////////////////
1583
1584struct CallbackThread : public Thread {
1585    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1586                   MediaPlayerBase::AudioSink::AudioCallback cb,
1587                   void *cookie);
1588
1589protected:
1590    virtual ~CallbackThread();
1591
1592    virtual bool threadLoop();
1593
1594private:
1595    wp<MediaPlayerBase::AudioSink> mSink;
1596    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1597    void *mCookie;
1598    void *mBuffer;
1599    size_t mBufferSize;
1600
1601    CallbackThread(const CallbackThread &);
1602    CallbackThread &operator=(const CallbackThread &);
1603};
1604
1605CallbackThread::CallbackThread(
1606        const wp<MediaPlayerBase::AudioSink> &sink,
1607        MediaPlayerBase::AudioSink::AudioCallback cb,
1608        void *cookie)
1609    : mSink(sink),
1610      mCallback(cb),
1611      mCookie(cookie),
1612      mBuffer(NULL),
1613      mBufferSize(0) {
1614}
1615
1616CallbackThread::~CallbackThread() {
1617    if (mBuffer) {
1618        free(mBuffer);
1619        mBuffer = NULL;
1620    }
1621}
1622
1623bool CallbackThread::threadLoop() {
1624    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1625    if (sink == NULL) {
1626        return false;
1627    }
1628
1629    if (mBuffer == NULL) {
1630        mBufferSize = sink->bufferSize();
1631        mBuffer = malloc(mBufferSize);
1632    }
1633
1634    size_t actualSize =
1635        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1636
1637    if (actualSize > 0) {
1638        sink->write(mBuffer, actualSize);
1639    }
1640
1641    return true;
1642}
1643
1644////////////////////////////////////////////////////////////////////////////////
1645
1646status_t MediaPlayerService::AudioCache::open(
1647        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1648        AudioCallback cb, void *cookie)
1649{
1650    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1651    if (mHeap->getHeapID() < 0) {
1652        return NO_INIT;
1653    }
1654
1655    mSampleRate = sampleRate;
1656    mChannelCount = (uint16_t)channelCount;
1657    mFormat = (uint16_t)format;
1658    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1659
1660    if (cb != NULL) {
1661        mCallbackThread = new CallbackThread(this, cb, cookie);
1662    }
1663    return NO_ERROR;
1664}
1665
1666void MediaPlayerService::AudioCache::start() {
1667    if (mCallbackThread != NULL) {
1668        mCallbackThread->run("AudioCache callback");
1669    }
1670}
1671
1672void MediaPlayerService::AudioCache::stop() {
1673    if (mCallbackThread != NULL) {
1674        mCallbackThread->requestExitAndWait();
1675    }
1676}
1677
1678ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1679{
1680    LOGV("write(%p, %u)", buffer, size);
1681    if ((buffer == 0) || (size == 0)) return size;
1682
1683    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1684    if (p == NULL) return NO_INIT;
1685    p += mSize;
1686    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1687    if (mSize + size > mHeap->getSize()) {
1688        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1689        size = mHeap->getSize() - mSize;
1690    }
1691    memcpy(p, buffer, size);
1692    mSize += size;
1693    return size;
1694}
1695
1696// call with lock held
1697status_t MediaPlayerService::AudioCache::wait()
1698{
1699    Mutex::Autolock lock(mLock);
1700    while (!mCommandComplete) {
1701        mSignal.wait(mLock);
1702    }
1703    mCommandComplete = false;
1704
1705    if (mError == NO_ERROR) {
1706        LOGV("wait - success");
1707    } else {
1708        LOGV("wait - error");
1709    }
1710    return mError;
1711}
1712
1713void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1714{
1715    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1716    AudioCache* p = static_cast<AudioCache*>(cookie);
1717
1718    // ignore buffering messages
1719    switch (msg)
1720    {
1721    case MEDIA_ERROR:
1722        LOGE("Error %d, %d occurred", ext1, ext2);
1723        p->mError = ext1;
1724        break;
1725    case MEDIA_PREPARED:
1726        LOGV("prepared");
1727        break;
1728    case MEDIA_PLAYBACK_COMPLETE:
1729        LOGV("playback complete");
1730        break;
1731    default:
1732        LOGV("ignored");
1733        return;
1734    }
1735
1736    // wake up thread
1737    Mutex::Autolock lock(p->mLock);
1738    p->mCommandComplete = true;
1739    p->mSignal.signal();
1740}
1741
1742} // namespace android
1743