MediaPlayerService.cpp revision a514bdb58b5de4986679f72b7204b4764f7a2778 
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 "VorbisPlayer.h"
60#include <media/PVPlayer.h>
61#include "TestPlayerStub.h"
62#include "StagefrightPlayer.h"
63
64#include <OMX.h>
65
66/* desktop Linux needs a little help with gettid() */
67#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
68#define __KERNEL__
69# include <linux/unistd.h>
70#ifdef _syscall0
71_syscall0(pid_t,gettid)
72#else
73pid_t gettid() { return syscall(__NR_gettid);}
74#endif
75#undef __KERNEL__
76#endif
77
78namespace {
79using android::media::Metadata;
80using android::status_t;
81using android::OK;
82using android::BAD_VALUE;
83using android::NOT_ENOUGH_DATA;
84using android::Parcel;
85
86// Max number of entries in the filter.
87const int kMaxFilterSize = 64;  // I pulled that out of thin air.
88
89// FIXME: Move all the metadata related function in the Metadata.cpp
90
91
92// Unmarshall a filter from a Parcel.
93// Filter format in a parcel:
94//
95//  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
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       number of entries (n)                   |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 1                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101// |                       metadata type 2                         |
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103//  ....
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       metadata type n                         |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107//
108// @param p Parcel that should start with a filter.
109// @param[out] filter On exit contains the list of metadata type to be
110//                    filtered.
111// @param[out] status On exit contains the status code to be returned.
112// @return true if the parcel starts with a valid filter.
113bool unmarshallFilter(const Parcel& p,
114                      Metadata::Filter *filter,
115                      status_t *status)
116{
117    int32_t val;
118    if (p.readInt32(&val) != OK)
119    {
120        LOGE("Failed to read filter's length");
121        *status = NOT_ENOUGH_DATA;
122        return false;
123    }
124
125    if( val > kMaxFilterSize || val < 0)
126    {
127        LOGE("Invalid filter len %d", val);
128        *status = BAD_VALUE;
129        return false;
130    }
131
132    const size_t num = val;
133
134    filter->clear();
135    filter->setCapacity(num);
136
137    size_t size = num * sizeof(Metadata::Type);
138
139
140    if (p.dataAvail() < size)
141    {
142        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
143        *status = NOT_ENOUGH_DATA;
144        return false;
145    }
146
147    const Metadata::Type *data =
148            static_cast<const Metadata::Type*>(p.readInplace(size));
149
150    if (NULL == data)
151    {
152        LOGE("Filter had no data");
153        *status = BAD_VALUE;
154        return false;
155    }
156
157    // TODO: The stl impl of vector would be more efficient here
158    // because it degenerates into a memcpy on pod types. Try to
159    // replace later or use stl::set.
160    for (size_t i = 0; i < num; ++i)
161    {
162        filter->add(*data);
163        ++data;
164    }
165    *status = OK;
166    return true;
167}
168
169// @param filter Of metadata type.
170// @param val To be searched.
171// @return true if a match was found.
172bool findMetadata(const Metadata::Filter& filter, const int32_t val)
173{
174    // Deal with empty and ANY right away
175    if (filter.isEmpty()) return false;
176    if (filter[0] == Metadata::kAny) return true;
177
178    return filter.indexOf(val) >= 0;
179}
180
181}  // anonymous namespace
182
183
184namespace android {
185
186// TODO: Temp hack until we can register players
187typedef struct {
188    const char *extension;
189    const player_type playertype;
190} extmap;
191extmap FILE_EXTS [] =  {
192        {".mid", SONIVOX_PLAYER},
193        {".midi", SONIVOX_PLAYER},
194        {".smf", SONIVOX_PLAYER},
195        {".xmf", SONIVOX_PLAYER},
196        {".imy", SONIVOX_PLAYER},
197        {".rtttl", SONIVOX_PLAYER},
198        {".rtx", SONIVOX_PLAYER},
199        {".ota", SONIVOX_PLAYER},
200        {".ogg", VORBIS_PLAYER},
201        {".oga", VORBIS_PLAYER},
202#ifndef NO_OPENCORE
203        {".wma", PV_PLAYER},
204        {".wmv", PV_PLAYER},
205        {".asf", PV_PLAYER},
206#endif
207};
208
209// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
210/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
211/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
212
213void MediaPlayerService::instantiate() {
214    defaultServiceManager()->addService(
215            String16("media.player"), new MediaPlayerService());
216}
217
218MediaPlayerService::MediaPlayerService()
219{
220    LOGV("MediaPlayerService created");
221    mNextConnId = 1;
222}
223
224MediaPlayerService::~MediaPlayerService()
225{
226    LOGV("MediaPlayerService destroyed");
227}
228
229sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
230{
231    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
232    wp<MediaRecorderClient> w = recorder;
233    Mutex::Autolock lock(mLock);
234    mMediaRecorderClients.add(w);
235    LOGV("Create new media recorder client from pid %d", pid);
236    return recorder;
237}
238
239void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
240{
241    Mutex::Autolock lock(mLock);
242    mMediaRecorderClients.remove(client);
243    LOGV("Delete media recorder client");
244}
245
246sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
247{
248    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
249    LOGV("Create new media retriever from pid %d", pid);
250    return retriever;
251}
252
253sp<IMediaPlayer> MediaPlayerService::create(
254        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
255        const KeyedVector<String8, String8> *headers, int audioSessionId)
256{
257    int32_t connId = android_atomic_inc(&mNextConnId);
258    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
259    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
260            connId, pid, url, connId, audioSessionId);
261    if (NO_ERROR != c->setDataSource(url, headers))
262    {
263        c.clear();
264        return c;
265    }
266    wp<Client> w = c;
267    Mutex::Autolock lock(mLock);
268    mClients.add(w);
269    return c;
270}
271
272sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
273        int fd, int64_t offset, int64_t length, int audioSessionId)
274{
275    int32_t connId = android_atomic_inc(&mNextConnId);
276    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
277    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
278            connId, pid, fd, offset, length, audioSessionId);
279    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
280        c.clear();
281    } else {
282        wp<Client> w = c;
283        Mutex::Autolock lock(mLock);
284        mClients.add(w);
285    }
286    ::close(fd);
287    return c;
288}
289
290sp<IOMX> MediaPlayerService::getOMX() {
291    Mutex::Autolock autoLock(mLock);
292
293    if (mOMX.get() == NULL) {
294        mOMX = new OMX;
295    }
296
297    return mOMX;
298}
299
300status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
301{
302    const size_t SIZE = 256;
303    char buffer[SIZE];
304    String8 result;
305
306    result.append(" AudioCache\n");
307    if (mHeap != 0) {
308        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
309                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
310        result.append(buffer);
311    }
312    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
313            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
314    result.append(buffer);
315    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
316            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
317    result.append(buffer);
318    ::write(fd, result.string(), result.size());
319    return NO_ERROR;
320}
321
322status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
323{
324    const size_t SIZE = 256;
325    char buffer[SIZE];
326    String8 result;
327
328    result.append(" AudioOutput\n");
329    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
330            mStreamType, mLeftVolume, mRightVolume);
331    result.append(buffer);
332    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
333            mMsecsPerFrame, mLatency);
334    result.append(buffer);
335    ::write(fd, result.string(), result.size());
336    if (mTrack != 0) {
337        mTrack->dump(fd, args);
338    }
339    return NO_ERROR;
340}
341
342status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
343{
344    const size_t SIZE = 256;
345    char buffer[SIZE];
346    String8 result;
347    result.append(" Client\n");
348    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
349            mPid, mConnId, mStatus, mLoop?"true": "false");
350    result.append(buffer);
351    write(fd, result.string(), result.size());
352    if (mAudioOutput != 0) {
353        mAudioOutput->dump(fd, args);
354    }
355    write(fd, "\n", 1);
356    return NO_ERROR;
357}
358
359static int myTid() {
360#ifdef HAVE_GETTID
361    return gettid();
362#else
363    return getpid();
364#endif
365}
366
367#if defined(__arm__)
368extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
369        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
370extern "C" void free_malloc_leak_info(uint8_t* info);
371
372// Use the String-class below instead of String8 to allocate all memory
373// beforehand and not reenter the heap while we are examining it...
374struct MyString8 {
375    static const size_t MAX_SIZE = 256 * 1024;
376
377    MyString8()
378        : mPtr((char *)malloc(MAX_SIZE)) {
379        *mPtr = '\0';
380    }
381
382    ~MyString8() {
383        free(mPtr);
384    }
385
386    void append(const char *s) {
387        strcat(mPtr, s);
388    }
389
390    const char *string() const {
391        return mPtr;
392    }
393
394    size_t size() const {
395        return strlen(mPtr);
396    }
397
398private:
399    char *mPtr;
400
401    MyString8(const MyString8 &);
402    MyString8 &operator=(const MyString8 &);
403};
404
405void memStatus(int fd, const Vector<String16>& args)
406{
407    const size_t SIZE = 256;
408    char buffer[SIZE];
409    MyString8 result;
410
411    typedef struct {
412        size_t size;
413        size_t dups;
414        intptr_t * backtrace;
415    } AllocEntry;
416
417    uint8_t *info = NULL;
418    size_t overallSize = 0;
419    size_t infoSize = 0;
420    size_t totalMemory = 0;
421    size_t backtraceSize = 0;
422
423    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
424    if (info) {
425        uint8_t *ptr = info;
426        size_t count = overallSize / infoSize;
427
428        snprintf(buffer, SIZE, " Allocation count %i\n", count);
429        result.append(buffer);
430        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
431        result.append(buffer);
432
433        AllocEntry * entries = new AllocEntry[count];
434
435        for (size_t i = 0; i < count; i++) {
436            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
437            AllocEntry *e = &entries[i];
438
439            e->size = *reinterpret_cast<size_t *>(ptr);
440            ptr += sizeof(size_t);
441
442            e->dups = *reinterpret_cast<size_t *>(ptr);
443            ptr += sizeof(size_t);
444
445            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
446            ptr += sizeof(intptr_t) * backtraceSize;
447        }
448
449        // Now we need to sort the entries.  They come sorted by size but
450        // not by stack trace which causes problems using diff.
451        bool moved;
452        do {
453            moved = false;
454            for (size_t i = 0; i < (count - 1); i++) {
455                AllocEntry *e1 = &entries[i];
456                AllocEntry *e2 = &entries[i+1];
457
458                bool swap = e1->size < e2->size;
459                if (e1->size == e2->size) {
460                    for(size_t j = 0; j < backtraceSize; j++) {
461                        if (e1->backtrace[j] == e2->backtrace[j]) {
462                            continue;
463                        }
464                        swap = e1->backtrace[j] < e2->backtrace[j];
465                        break;
466                    }
467                }
468                if (swap) {
469                    AllocEntry t = entries[i];
470                    entries[i] = entries[i+1];
471                    entries[i+1] = t;
472                    moved = true;
473                }
474            }
475        } while (moved);
476
477        for (size_t i = 0; i < count; i++) {
478            AllocEntry *e = &entries[i];
479
480            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
481            result.append(buffer);
482            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
483                if (ct) {
484                    result.append(", ");
485                }
486                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
487                result.append(buffer);
488            }
489            result.append("\n");
490        }
491
492        delete[] entries;
493        free_malloc_leak_info(info);
494    }
495
496    write(fd, result.string(), result.size());
497}
498#endif
499
500status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
501{
502    const size_t SIZE = 256;
503    char buffer[SIZE];
504    String8 result;
505    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
506        snprintf(buffer, SIZE, "Permission Denial: "
507                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
508                IPCThreadState::self()->getCallingPid(),
509                IPCThreadState::self()->getCallingUid());
510        result.append(buffer);
511    } else {
512        Mutex::Autolock lock(mLock);
513        for (int i = 0, n = mClients.size(); i < n; ++i) {
514            sp<Client> c = mClients[i].promote();
515            if (c != 0) c->dump(fd, args);
516        }
517        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
518            result.append(" MediaRecorderClient\n");
519            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
520            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
521            result.append(buffer);
522        }
523
524        result.append(" Files opened and/or mapped:\n");
525        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
526        FILE *f = fopen(buffer, "r");
527        if (f) {
528            while (!feof(f)) {
529                fgets(buffer, SIZE, f);
530                if (strstr(buffer, " /sdcard/") ||
531                    strstr(buffer, " /system/sounds/") ||
532                    strstr(buffer, " /system/media/")) {
533                    result.append("  ");
534                    result.append(buffer);
535                }
536            }
537            fclose(f);
538        } else {
539            result.append("couldn't open ");
540            result.append(buffer);
541            result.append("\n");
542        }
543
544        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
545        DIR *d = opendir(buffer);
546        if (d) {
547            struct dirent *ent;
548            while((ent = readdir(d)) != NULL) {
549                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
550                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
551                    struct stat s;
552                    if (lstat(buffer, &s) == 0) {
553                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
554                            char linkto[256];
555                            int len = readlink(buffer, linkto, sizeof(linkto));
556                            if(len > 0) {
557                                if(len > 255) {
558                                    linkto[252] = '.';
559                                    linkto[253] = '.';
560                                    linkto[254] = '.';
561                                    linkto[255] = 0;
562                                } else {
563                                    linkto[len] = 0;
564                                }
565                                if (strstr(linkto, "/sdcard/") == linkto ||
566                                    strstr(linkto, "/system/sounds/") == linkto ||
567                                    strstr(linkto, "/system/media/") == linkto) {
568                                    result.append("  ");
569                                    result.append(buffer);
570                                    result.append(" -> ");
571                                    result.append(linkto);
572                                    result.append("\n");
573                                }
574                            }
575                        } else {
576                            result.append("  unexpected type for ");
577                            result.append(buffer);
578                            result.append("\n");
579                        }
580                    }
581                }
582            }
583            closedir(d);
584        } else {
585            result.append("couldn't open ");
586            result.append(buffer);
587            result.append("\n");
588        }
589
590#if defined(__arm__)
591        bool dumpMem = false;
592        for (size_t i = 0; i < args.size(); i++) {
593            if (args[i] == String16("-m")) {
594                dumpMem = true;
595            }
596        }
597        if (dumpMem) {
598            memStatus(fd, args);
599        }
600#endif
601    }
602    write(fd, result.string(), result.size());
603    return NO_ERROR;
604}
605
606void MediaPlayerService::removeClient(wp<Client> client)
607{
608    Mutex::Autolock lock(mLock);
609    mClients.remove(client);
610}
611
612MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
613        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
614{
615    LOGV("Client(%d) constructor", connId);
616    mPid = pid;
617    mConnId = connId;
618    mService = service;
619    mClient = client;
620    mLoop = false;
621    mStatus = NO_INIT;
622    mAudioSessionId = audioSessionId;
623
624#if CALLBACK_ANTAGONIZER
625    LOGD("create Antagonizer");
626    mAntagonizer = new Antagonizer(notify, this);
627#endif
628}
629
630MediaPlayerService::Client::~Client()
631{
632    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
633    mAudioOutput.clear();
634    wp<Client> client(this);
635    disconnect();
636    mService->removeClient(client);
637}
638
639void MediaPlayerService::Client::disconnect()
640{
641    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
642    // grab local reference and clear main reference to prevent future
643    // access to object
644    sp<MediaPlayerBase> p;
645    {
646        Mutex::Autolock l(mLock);
647        p = mPlayer;
648    }
649    mClient.clear();
650
651    mPlayer.clear();
652
653    // clear the notification to prevent callbacks to dead client
654    // and reset the player. We assume the player will serialize
655    // access to itself if necessary.
656    if (p != 0) {
657        p->setNotifyCallback(0, 0);
658#if CALLBACK_ANTAGONIZER
659        LOGD("kill Antagonizer");
660        mAntagonizer->kill();
661#endif
662        p->reset();
663    }
664
665    IPCThreadState::self()->flushCommands();
666}
667
668static player_type getDefaultPlayerType() {
669#if BUILD_WITH_FULL_STAGEFRIGHT
670    char value[PROPERTY_VALUE_MAX];
671    if (property_get("media.stagefright.enable-player", value, NULL)
672        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
673        return STAGEFRIGHT_PLAYER;
674    }
675#endif
676
677    return PV_PLAYER;
678}
679
680// By default we use the VORBIS_PLAYER for vorbis playback (duh!),
681// but if the magic property is set we will use our new experimental
682// stagefright code instead.
683static player_type OverrideStagefrightForVorbis(player_type player) {
684    if (player != VORBIS_PLAYER) {
685        return player;
686    }
687
688#if BUILD_WITH_FULL_STAGEFRIGHT
689    char value[PROPERTY_VALUE_MAX];
690    if (property_get("media.stagefright.enable-vorbis", value, NULL)
691        && (!strcmp(value, "1") || !strcmp(value, "true"))) {
692        return STAGEFRIGHT_PLAYER;
693    }
694#endif
695
696    return VORBIS_PLAYER;
697}
698
699
700player_type getPlayerType(int fd, int64_t offset, int64_t length)
701{
702    char buf[20];
703    lseek(fd, offset, SEEK_SET);
704    read(fd, buf, sizeof(buf));
705    lseek(fd, offset, SEEK_SET);
706
707    long ident = *((long*)buf);
708
709    // Ogg vorbis?
710    if (ident == 0x5367674f) // 'OggS'
711        return OverrideStagefrightForVorbis(VORBIS_PLAYER);
712
713#ifndef NO_OPENCORE
714    if (ident == 0x75b22630) {
715        // The magic number for .asf files, i.e. wmv and wma content.
716        // These are not currently supported through stagefright.
717        return PV_PLAYER;
718    }
719#endif
720
721    // Some kind of MIDI?
722    EAS_DATA_HANDLE easdata;
723    if (EAS_Init(&easdata) == EAS_SUCCESS) {
724        EAS_FILE locator;
725        locator.path = NULL;
726        locator.fd = fd;
727        locator.offset = offset;
728        locator.length = length;
729        EAS_HANDLE  eashandle;
730        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
731            EAS_CloseFile(easdata, eashandle);
732            EAS_Shutdown(easdata);
733            return SONIVOX_PLAYER;
734        }
735        EAS_Shutdown(easdata);
736    }
737
738    return getDefaultPlayerType();
739}
740
741player_type getPlayerType(const char* url)
742{
743    if (TestPlayerStub::canBeUsed(url)) {
744        return TEST_PLAYER;
745    }
746
747    bool useStagefrightForHTTP = false;
748    char value[PROPERTY_VALUE_MAX];
749    if (property_get("media.stagefright.enable-http", value, NULL)
750        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
751        useStagefrightForHTTP = true;
752    }
753
754    // use MidiFile for MIDI extensions
755    int lenURL = strlen(url);
756    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
757        int len = strlen(FILE_EXTS[i].extension);
758        int start = lenURL - len;
759        if (start > 0) {
760            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
761                if (FILE_EXTS[i].playertype == VORBIS_PLAYER
762                    && !strncasecmp(url, "http://", 7)
763                    && useStagefrightForHTTP) {
764                    return STAGEFRIGHT_PLAYER;
765                }
766                return OverrideStagefrightForVorbis(FILE_EXTS[i].playertype);
767            }
768        }
769    }
770
771    if (!strncasecmp(url, "http://", 7)) {
772        if (!useStagefrightForHTTP) {
773            return PV_PLAYER;
774        }
775    }
776
777    if (!strncasecmp(url, "rtsp://", 7)) {
778        char value[PROPERTY_VALUE_MAX];
779        if (!property_get("media.stagefright.enable-rtsp", value, NULL)
780            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
781            // For now, we're going to use PV for rtsp-based playback
782            // by default until we can clear up a few more issues.
783            return PV_PLAYER;
784        }
785    }
786
787    return getDefaultPlayerType();
788}
789
790static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
791        notify_callback_f notifyFunc)
792{
793    sp<MediaPlayerBase> p;
794    switch (playerType) {
795#ifndef NO_OPENCORE
796        case PV_PLAYER:
797            LOGV(" create PVPlayer");
798            p = new PVPlayer();
799            break;
800#endif
801        case SONIVOX_PLAYER:
802            LOGV(" create MidiFile");
803            p = new MidiFile();
804            break;
805        case VORBIS_PLAYER:
806            LOGV(" create VorbisPlayer");
807            p = new VorbisPlayer();
808            break;
809#if BUILD_WITH_FULL_STAGEFRIGHT
810        case STAGEFRIGHT_PLAYER:
811            LOGV(" create StagefrightPlayer");
812            p = new StagefrightPlayer;
813            break;
814#endif
815        case TEST_PLAYER:
816            LOGV("Create Test Player stub");
817            p = new TestPlayerStub();
818            break;
819    }
820    if (p != NULL) {
821        if (p->initCheck() == NO_ERROR) {
822            p->setNotifyCallback(cookie, notifyFunc);
823        } else {
824            p.clear();
825        }
826    }
827    if (p == NULL) {
828        LOGE("Failed to create player object");
829    }
830    return p;
831}
832
833sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
834{
835    // determine if we have the right player type
836    sp<MediaPlayerBase> p = mPlayer;
837    if ((p != NULL) && (p->playerType() != playerType)) {
838        LOGV("delete player");
839        p.clear();
840    }
841    if (p == NULL) {
842        p = android::createPlayer(playerType, this, notify);
843    }
844    return p;
845}
846
847status_t MediaPlayerService::Client::setDataSource(
848        const char *url, const KeyedVector<String8, String8> *headers)
849{
850    LOGV("setDataSource(%s)", url);
851    if (url == NULL)
852        return UNKNOWN_ERROR;
853
854    if (strncmp(url, "content://", 10) == 0) {
855        // get a filedescriptor for the content Uri and
856        // pass it to the setDataSource(fd) method
857
858        String16 url16(url);
859        int fd = android::openContentProviderFile(url16);
860        if (fd < 0)
861        {
862            LOGE("Couldn't open fd for %s", url);
863            return UNKNOWN_ERROR;
864        }
865        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
866        close(fd);
867        return mStatus;
868    } else {
869        player_type playerType = getPlayerType(url);
870        LOGV("player type = %d", playerType);
871
872        // create the right type of player
873        sp<MediaPlayerBase> p = createPlayer(playerType);
874        if (p == NULL) return NO_INIT;
875
876        if (!p->hardwareOutput()) {
877            mAudioOutput = new AudioOutput(mAudioSessionId);
878            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
879        }
880
881        // now set data source
882        LOGV(" setDataSource");
883        mStatus = p->setDataSource(url, headers);
884        if (mStatus == NO_ERROR) {
885            mPlayer = p;
886        } else {
887            LOGE("  error: %d", mStatus);
888        }
889        return mStatus;
890    }
891}
892
893status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
894{
895    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
896    struct stat sb;
897    int ret = fstat(fd, &sb);
898    if (ret != 0) {
899        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
900        return UNKNOWN_ERROR;
901    }
902
903    LOGV("st_dev  = %llu", sb.st_dev);
904    LOGV("st_mode = %u", sb.st_mode);
905    LOGV("st_uid  = %lu", sb.st_uid);
906    LOGV("st_gid  = %lu", sb.st_gid);
907    LOGV("st_size = %llu", sb.st_size);
908
909    if (offset >= sb.st_size) {
910        LOGE("offset error");
911        ::close(fd);
912        return UNKNOWN_ERROR;
913    }
914    if (offset + length > sb.st_size) {
915        length = sb.st_size - offset;
916        LOGV("calculated length = %lld", length);
917    }
918
919    player_type playerType = getPlayerType(fd, offset, length);
920    LOGV("player type = %d", playerType);
921
922    // create the right type of player
923    sp<MediaPlayerBase> p = createPlayer(playerType);
924    if (p == NULL) return NO_INIT;
925
926    if (!p->hardwareOutput()) {
927        mAudioOutput = new AudioOutput(mAudioSessionId);
928        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
929    }
930
931    // now set data source
932    mStatus = p->setDataSource(fd, offset, length);
933    if (mStatus == NO_ERROR) mPlayer = p;
934    return mStatus;
935}
936
937status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
938{
939    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
940    sp<MediaPlayerBase> p = getPlayer();
941    if (p == 0) return UNKNOWN_ERROR;
942    return p->setVideoSurface(surface);
943}
944
945status_t MediaPlayerService::Client::invoke(const Parcel& request,
946                                            Parcel *reply)
947{
948    sp<MediaPlayerBase> p = getPlayer();
949    if (p == NULL) return UNKNOWN_ERROR;
950    return p->invoke(request, reply);
951}
952
953// This call doesn't need to access the native player.
954status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
955{
956    status_t status;
957    media::Metadata::Filter allow, drop;
958
959    if (unmarshallFilter(filter, &allow, &status) &&
960        unmarshallFilter(filter, &drop, &status)) {
961        Mutex::Autolock lock(mLock);
962
963        mMetadataAllow = allow;
964        mMetadataDrop = drop;
965    }
966    return status;
967}
968
969status_t MediaPlayerService::Client::getMetadata(
970        bool update_only, bool apply_filter, Parcel *reply)
971{
972    sp<MediaPlayerBase> player = getPlayer();
973    if (player == 0) return UNKNOWN_ERROR;
974
975    status_t status;
976    // Placeholder for the return code, updated by the caller.
977    reply->writeInt32(-1);
978
979    media::Metadata::Filter ids;
980
981    // We don't block notifications while we fetch the data. We clear
982    // mMetadataUpdated first so we don't lose notifications happening
983    // during the rest of this call.
984    {
985        Mutex::Autolock lock(mLock);
986        if (update_only) {
987            ids = mMetadataUpdated;
988        }
989        mMetadataUpdated.clear();
990    }
991
992    media::Metadata metadata(reply);
993
994    metadata.appendHeader();
995    status = player->getMetadata(ids, reply);
996
997    if (status != OK) {
998        metadata.resetParcel();
999        LOGE("getMetadata failed %d", status);
1000        return status;
1001    }
1002
1003    // FIXME: Implement filtering on the result. Not critical since
1004    // filtering takes place on the update notifications already. This
1005    // would be when all the metadata are fetch and a filter is set.
1006
1007    // Everything is fine, update the metadata length.
1008    metadata.updateLength();
1009    return OK;
1010}
1011
1012status_t MediaPlayerService::Client::suspend() {
1013    sp<MediaPlayerBase> p = getPlayer();
1014    if (p == 0) return UNKNOWN_ERROR;
1015
1016    return p->suspend();
1017}
1018
1019status_t MediaPlayerService::Client::resume() {
1020    sp<MediaPlayerBase> p = getPlayer();
1021    if (p == 0) return UNKNOWN_ERROR;
1022
1023    return p->resume();
1024}
1025
1026status_t MediaPlayerService::Client::prepareAsync()
1027{
1028    LOGV("[%d] prepareAsync", mConnId);
1029    sp<MediaPlayerBase> p = getPlayer();
1030    if (p == 0) return UNKNOWN_ERROR;
1031    status_t ret = p->prepareAsync();
1032#if CALLBACK_ANTAGONIZER
1033    LOGD("start Antagonizer");
1034    if (ret == NO_ERROR) mAntagonizer->start();
1035#endif
1036    return ret;
1037}
1038
1039status_t MediaPlayerService::Client::start()
1040{
1041    LOGV("[%d] start", mConnId);
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    p->setLooping(mLoop);
1045    return p->start();
1046}
1047
1048status_t MediaPlayerService::Client::stop()
1049{
1050    LOGV("[%d] stop", mConnId);
1051    sp<MediaPlayerBase> p = getPlayer();
1052    if (p == 0) return UNKNOWN_ERROR;
1053    return p->stop();
1054}
1055
1056status_t MediaPlayerService::Client::pause()
1057{
1058    LOGV("[%d] pause", mConnId);
1059    sp<MediaPlayerBase> p = getPlayer();
1060    if (p == 0) return UNKNOWN_ERROR;
1061    return p->pause();
1062}
1063
1064status_t MediaPlayerService::Client::isPlaying(bool* state)
1065{
1066    *state = false;
1067    sp<MediaPlayerBase> p = getPlayer();
1068    if (p == 0) return UNKNOWN_ERROR;
1069    *state = p->isPlaying();
1070    LOGV("[%d] isPlaying: %d", mConnId, *state);
1071    return NO_ERROR;
1072}
1073
1074status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1075{
1076    LOGV("getCurrentPosition");
1077    sp<MediaPlayerBase> p = getPlayer();
1078    if (p == 0) return UNKNOWN_ERROR;
1079    status_t ret = p->getCurrentPosition(msec);
1080    if (ret == NO_ERROR) {
1081        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1082    } else {
1083        LOGE("getCurrentPosition returned %d", ret);
1084    }
1085    return ret;
1086}
1087
1088status_t MediaPlayerService::Client::getDuration(int *msec)
1089{
1090    LOGV("getDuration");
1091    sp<MediaPlayerBase> p = getPlayer();
1092    if (p == 0) return UNKNOWN_ERROR;
1093    status_t ret = p->getDuration(msec);
1094    if (ret == NO_ERROR) {
1095        LOGV("[%d] getDuration = %d", mConnId, *msec);
1096    } else {
1097        LOGE("getDuration returned %d", ret);
1098    }
1099    return ret;
1100}
1101
1102status_t MediaPlayerService::Client::seekTo(int msec)
1103{
1104    LOGV("[%d] seekTo(%d)", mConnId, msec);
1105    sp<MediaPlayerBase> p = getPlayer();
1106    if (p == 0) return UNKNOWN_ERROR;
1107    return p->seekTo(msec);
1108}
1109
1110status_t MediaPlayerService::Client::reset()
1111{
1112    LOGV("[%d] reset", mConnId);
1113    sp<MediaPlayerBase> p = getPlayer();
1114    if (p == 0) return UNKNOWN_ERROR;
1115    return p->reset();
1116}
1117
1118status_t MediaPlayerService::Client::setAudioStreamType(int type)
1119{
1120    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1121    // TODO: for hardware output, call player instead
1122    Mutex::Autolock l(mLock);
1123    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1124    return NO_ERROR;
1125}
1126
1127status_t MediaPlayerService::Client::setLooping(int loop)
1128{
1129    LOGV("[%d] setLooping(%d)", mConnId, loop);
1130    mLoop = loop;
1131    sp<MediaPlayerBase> p = getPlayer();
1132    if (p != 0) return p->setLooping(loop);
1133    return NO_ERROR;
1134}
1135
1136status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1137{
1138    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1139    // TODO: for hardware output, call player instead
1140    Mutex::Autolock l(mLock);
1141    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1142    return NO_ERROR;
1143}
1144
1145
1146void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1147{
1148    Client* client = static_cast<Client*>(cookie);
1149
1150    if (MEDIA_INFO == msg &&
1151        MEDIA_INFO_METADATA_UPDATE == ext1) {
1152        const media::Metadata::Type metadata_type = ext2;
1153
1154        if(client->shouldDropMetadata(metadata_type)) {
1155            return;
1156        }
1157
1158        // Update the list of metadata that have changed. getMetadata
1159        // also access mMetadataUpdated and clears it.
1160        client->addNewMetadataUpdate(metadata_type);
1161    }
1162    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1163    client->mClient->notify(msg, ext1, ext2);
1164}
1165
1166
1167bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1168{
1169    Mutex::Autolock lock(mLock);
1170
1171    if (findMetadata(mMetadataDrop, code)) {
1172        return true;
1173    }
1174
1175    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1176        return false;
1177    } else {
1178        return true;
1179    }
1180}
1181
1182
1183void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1184    Mutex::Autolock lock(mLock);
1185    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1186        mMetadataUpdated.add(metadata_type);
1187    }
1188}
1189
1190#if CALLBACK_ANTAGONIZER
1191const int Antagonizer::interval = 10000; // 10 msecs
1192
1193Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1194    mExit(false), mActive(false), mClient(client), mCb(cb)
1195{
1196    createThread(callbackThread, this);
1197}
1198
1199void Antagonizer::kill()
1200{
1201    Mutex::Autolock _l(mLock);
1202    mActive = false;
1203    mExit = true;
1204    mCondition.wait(mLock);
1205}
1206
1207int Antagonizer::callbackThread(void* user)
1208{
1209    LOGD("Antagonizer started");
1210    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1211    while (!p->mExit) {
1212        if (p->mActive) {
1213            LOGV("send event");
1214            p->mCb(p->mClient, 0, 0, 0);
1215        }
1216        usleep(interval);
1217    }
1218    Mutex::Autolock _l(p->mLock);
1219    p->mCondition.signal();
1220    LOGD("Antagonizer stopped");
1221    return 0;
1222}
1223#endif
1224
1225static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1226
1227sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1228{
1229    LOGV("decode(%s)", url);
1230    sp<MemoryBase> mem;
1231    sp<MediaPlayerBase> player;
1232
1233    // Protect our precious, precious DRMd ringtones by only allowing
1234    // decoding of http, but not filesystem paths or content Uris.
1235    // If the application wants to decode those, it should open a
1236    // filedescriptor for them and use that.
1237    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1238        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1239        return mem;
1240    }
1241
1242    player_type playerType = getPlayerType(url);
1243    LOGV("player type = %d", playerType);
1244
1245    // create the right type of player
1246    sp<AudioCache> cache = new AudioCache(url);
1247    player = android::createPlayer(playerType, cache.get(), cache->notify);
1248    if (player == NULL) goto Exit;
1249    if (player->hardwareOutput()) goto Exit;
1250
1251    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1252
1253    // set data source
1254    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1255
1256    LOGV("prepare");
1257    player->prepareAsync();
1258
1259    LOGV("wait for prepare");
1260    if (cache->wait() != NO_ERROR) goto Exit;
1261
1262    LOGV("start");
1263    player->start();
1264
1265    LOGV("wait for playback complete");
1266    if (cache->wait() != NO_ERROR) goto Exit;
1267
1268    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1269    *pSampleRate = cache->sampleRate();
1270    *pNumChannels = cache->channelCount();
1271    *pFormat = cache->format();
1272    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1273
1274Exit:
1275    if (player != 0) player->reset();
1276    return mem;
1277}
1278
1279sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1280{
1281    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1282    sp<MemoryBase> mem;
1283    sp<MediaPlayerBase> player;
1284
1285    player_type playerType = getPlayerType(fd, offset, length);
1286    LOGV("player type = %d", playerType);
1287
1288    // create the right type of player
1289    sp<AudioCache> cache = new AudioCache("decode_fd");
1290    player = android::createPlayer(playerType, cache.get(), cache->notify);
1291    if (player == NULL) goto Exit;
1292    if (player->hardwareOutput()) goto Exit;
1293
1294    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1295
1296    // set data source
1297    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1298
1299    LOGV("prepare");
1300    player->prepareAsync();
1301
1302    LOGV("wait for prepare");
1303    if (cache->wait() != NO_ERROR) goto Exit;
1304
1305    LOGV("start");
1306    player->start();
1307
1308    LOGV("wait for playback complete");
1309    if (cache->wait() != NO_ERROR) goto Exit;
1310
1311    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1312    *pSampleRate = cache->sampleRate();
1313    *pNumChannels = cache->channelCount();
1314    *pFormat = cache->format();
1315    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1316
1317Exit:
1318    if (player != 0) player->reset();
1319    ::close(fd);
1320    return mem;
1321}
1322
1323/*
1324 * Avert your eyes, ugly hack ahead.
1325 * The following is to support music visualizations.
1326 */
1327
1328static const int NUMVIZBUF = 32;
1329static const int VIZBUFFRAMES = 1024;
1330static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1331static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1332
1333static bool gotMem = false;
1334static sp<MemoryHeapBase> heap;
1335static sp<MemoryBase> mem[NUMVIZBUF];
1336static uint64_t endTime;
1337static uint64_t lastReadTime;
1338static uint64_t lastWriteTime;
1339static int writeIdx = 0;
1340
1341static void allocVizBufs() {
1342    if (!gotMem) {
1343        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1344        for (int i=0;i<NUMVIZBUF;i++) {
1345            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1346        }
1347        endTime = 0;
1348        gotMem = true;
1349    }
1350}
1351
1352
1353/*
1354 * Get a buffer of audio data that is about to be played.
1355 * We don't synchronize this because in practice the writer
1356 * is ahead of the reader, and even if we did happen to catch
1357 * a buffer while it's being written, it's just a visualization,
1358 * so no harm done.
1359 */
1360static sp<MemoryBase> getVizBuffer() {
1361
1362    allocVizBufs();
1363
1364    lastReadTime = uptimeMillis();
1365
1366    // if there is no recent buffer (yet), just return empty handed
1367    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1368        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1369        return NULL;
1370    }
1371
1372    int timedelta = endTime - lastReadTime;
1373    if (timedelta < 0) timedelta = 0;
1374    int framedelta = timedelta * 44100 / 1000;
1375    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1376    while (headIdx < 0) {
1377        headIdx += NUMVIZBUF;
1378    }
1379    return mem[headIdx];
1380}
1381
1382// Append the data to the vizualization buffer
1383static void makeVizBuffers(const char *data, int len, uint64_t time) {
1384
1385    allocVizBufs();
1386
1387    uint64_t startTime = time;
1388    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1389    int offset = writeIdx;
1390    int maxoff = heap->getSize() / 2; // in shorts
1391    short *base = (short*)heap->getBase();
1392    short *src = (short*)data;
1393    while (len > 0) {
1394
1395        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1396        // This should still be good enough for a visualization
1397        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1398        src += 2;
1399        len -= frameSize;
1400        if (offset >= maxoff) {
1401            offset = 0;
1402        }
1403    }
1404    writeIdx = offset;
1405    endTime = time + (len / frameSize) / 44;
1406    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1407}
1408
1409sp<IMemory> MediaPlayerService::snoop()
1410{
1411    sp<MemoryBase> mem = getVizBuffer();
1412    return mem;
1413}
1414
1415
1416#undef LOG_TAG
1417#define LOG_TAG "AudioSink"
1418MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1419    : mCallback(NULL),
1420      mCallbackCookie(NULL),
1421      mSessionId(sessionId) {
1422    LOGV("AudioOutput(%d)", sessionId);
1423    mTrack = 0;
1424    mStreamType = AudioSystem::MUSIC;
1425    mLeftVolume = 1.0;
1426    mRightVolume = 1.0;
1427    mLatency = 0;
1428    mMsecsPerFrame = 0;
1429    mNumFramesWritten = 0;
1430    setMinBufferCount();
1431}
1432
1433MediaPlayerService::AudioOutput::~AudioOutput()
1434{
1435    close();
1436}
1437
1438void MediaPlayerService::AudioOutput::setMinBufferCount()
1439{
1440    char value[PROPERTY_VALUE_MAX];
1441    if (property_get("ro.kernel.qemu", value, 0)) {
1442        mIsOnEmulator = true;
1443        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1444    }
1445}
1446
1447bool MediaPlayerService::AudioOutput::isOnEmulator()
1448{
1449    setMinBufferCount();
1450    return mIsOnEmulator;
1451}
1452
1453int MediaPlayerService::AudioOutput::getMinBufferCount()
1454{
1455    setMinBufferCount();
1456    return mMinBufferCount;
1457}
1458
1459ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1460{
1461    if (mTrack == 0) return NO_INIT;
1462    return mTrack->frameCount() * frameSize();
1463}
1464
1465ssize_t MediaPlayerService::AudioOutput::frameCount() const
1466{
1467    if (mTrack == 0) return NO_INIT;
1468    return mTrack->frameCount();
1469}
1470
1471ssize_t MediaPlayerService::AudioOutput::channelCount() const
1472{
1473    if (mTrack == 0) return NO_INIT;
1474    return mTrack->channelCount();
1475}
1476
1477ssize_t MediaPlayerService::AudioOutput::frameSize() const
1478{
1479    if (mTrack == 0) return NO_INIT;
1480    return mTrack->frameSize();
1481}
1482
1483uint32_t MediaPlayerService::AudioOutput::latency () const
1484{
1485    return mLatency;
1486}
1487
1488float MediaPlayerService::AudioOutput::msecsPerFrame() const
1489{
1490    return mMsecsPerFrame;
1491}
1492
1493status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1494{
1495    if (mTrack == 0) return NO_INIT;
1496    return mTrack->getPosition(position);
1497}
1498
1499status_t MediaPlayerService::AudioOutput::open(
1500        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1501        AudioCallback cb, void *cookie)
1502{
1503    mCallback = cb;
1504    mCallbackCookie = cookie;
1505
1506    // Check argument "bufferCount" against the mininum buffer count
1507    if (bufferCount < mMinBufferCount) {
1508        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1509        bufferCount = mMinBufferCount;
1510
1511    }
1512    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1513    if (mTrack) close();
1514    int afSampleRate;
1515    int afFrameCount;
1516    int frameCount;
1517
1518    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1519        return NO_INIT;
1520    }
1521    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1522        return NO_INIT;
1523    }
1524
1525    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1526
1527    AudioTrack *t;
1528    if (mCallback != NULL) {
1529        t = new AudioTrack(
1530                mStreamType,
1531                sampleRate,
1532                format,
1533                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1534                frameCount,
1535                0 /* flags */,
1536                CallbackWrapper,
1537                this,
1538                0,
1539                mSessionId);
1540    } else {
1541        t = new AudioTrack(
1542                mStreamType,
1543                sampleRate,
1544                format,
1545                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1546                frameCount,
1547                0,
1548                NULL,
1549                NULL,
1550                0,
1551                mSessionId);
1552    }
1553
1554    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1555        LOGE("Unable to create audio track");
1556        delete t;
1557        return NO_INIT;
1558    }
1559
1560    LOGV("setVolume");
1561    t->setVolume(mLeftVolume, mRightVolume);
1562    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1563    mLatency = t->latency();
1564    mTrack = t;
1565    return NO_ERROR;
1566}
1567
1568void MediaPlayerService::AudioOutput::start()
1569{
1570    LOGV("start");
1571    if (mTrack) {
1572        mTrack->setVolume(mLeftVolume, mRightVolume);
1573        mTrack->start();
1574        mTrack->getPosition(&mNumFramesWritten);
1575    }
1576}
1577
1578void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1579    // Only make visualization buffers if anyone recently requested visualization data
1580    uint64_t now = uptimeMillis();
1581    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1582        // Based on the current play counter, the number of frames written and
1583        // the current real time we can calculate the approximate real start
1584        // time of the buffer we're about to write.
1585        uint32_t pos;
1586        mTrack->getPosition(&pos);
1587
1588        // we're writing ahead by this many frames:
1589        int ahead = mNumFramesWritten - pos;
1590        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1591        // which is this many milliseconds, assuming 44100 Hz:
1592        ahead /= 44;
1593
1594        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1595        lastWriteTime = now;
1596    }
1597}
1598
1599
1600ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1601{
1602    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1603
1604    //LOGV("write(%p, %u)", buffer, size);
1605    if (mTrack) {
1606        snoopWrite(buffer, size);
1607        ssize_t ret = mTrack->write(buffer, size);
1608        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1609        return ret;
1610    }
1611    return NO_INIT;
1612}
1613
1614void MediaPlayerService::AudioOutput::stop()
1615{
1616    LOGV("stop");
1617    if (mTrack) mTrack->stop();
1618    lastWriteTime = 0;
1619}
1620
1621void MediaPlayerService::AudioOutput::flush()
1622{
1623    LOGV("flush");
1624    if (mTrack) mTrack->flush();
1625}
1626
1627void MediaPlayerService::AudioOutput::pause()
1628{
1629    LOGV("pause");
1630    if (mTrack) mTrack->pause();
1631    lastWriteTime = 0;
1632}
1633
1634void MediaPlayerService::AudioOutput::close()
1635{
1636    LOGV("close");
1637    delete mTrack;
1638    mTrack = 0;
1639}
1640
1641void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1642{
1643    LOGV("setVolume(%f, %f)", left, right);
1644    mLeftVolume = left;
1645    mRightVolume = right;
1646    if (mTrack) {
1647        mTrack->setVolume(left, right);
1648    }
1649}
1650
1651// static
1652void MediaPlayerService::AudioOutput::CallbackWrapper(
1653        int event, void *cookie, void *info) {
1654    //LOGV("callbackwrapper");
1655    if (event != AudioTrack::EVENT_MORE_DATA) {
1656        return;
1657    }
1658
1659    AudioOutput *me = (AudioOutput *)cookie;
1660    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1661
1662    size_t actualSize = (*me->mCallback)(
1663            me, buffer->raw, buffer->size, me->mCallbackCookie);
1664
1665    buffer->size = actualSize;
1666
1667    if (actualSize > 0) {
1668        me->snoopWrite(buffer->raw, actualSize);
1669    }
1670}
1671
1672#undef LOG_TAG
1673#define LOG_TAG "AudioCache"
1674MediaPlayerService::AudioCache::AudioCache(const char* name) :
1675    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1676    mError(NO_ERROR), mCommandComplete(false)
1677{
1678    // create ashmem heap
1679    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1680}
1681
1682uint32_t MediaPlayerService::AudioCache::latency () const
1683{
1684    return 0;
1685}
1686
1687float MediaPlayerService::AudioCache::msecsPerFrame() const
1688{
1689    return mMsecsPerFrame;
1690}
1691
1692status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1693{
1694    if (position == 0) return BAD_VALUE;
1695    *position = mSize;
1696    return NO_ERROR;
1697}
1698
1699////////////////////////////////////////////////////////////////////////////////
1700
1701struct CallbackThread : public Thread {
1702    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1703                   MediaPlayerBase::AudioSink::AudioCallback cb,
1704                   void *cookie);
1705
1706protected:
1707    virtual ~CallbackThread();
1708
1709    virtual bool threadLoop();
1710
1711private:
1712    wp<MediaPlayerBase::AudioSink> mSink;
1713    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1714    void *mCookie;
1715    void *mBuffer;
1716    size_t mBufferSize;
1717
1718    CallbackThread(const CallbackThread &);
1719    CallbackThread &operator=(const CallbackThread &);
1720};
1721
1722CallbackThread::CallbackThread(
1723        const wp<MediaPlayerBase::AudioSink> &sink,
1724        MediaPlayerBase::AudioSink::AudioCallback cb,
1725        void *cookie)
1726    : mSink(sink),
1727      mCallback(cb),
1728      mCookie(cookie),
1729      mBuffer(NULL),
1730      mBufferSize(0) {
1731}
1732
1733CallbackThread::~CallbackThread() {
1734    if (mBuffer) {
1735        free(mBuffer);
1736        mBuffer = NULL;
1737    }
1738}
1739
1740bool CallbackThread::threadLoop() {
1741    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1742    if (sink == NULL) {
1743        return false;
1744    }
1745
1746    if (mBuffer == NULL) {
1747        mBufferSize = sink->bufferSize();
1748        mBuffer = malloc(mBufferSize);
1749    }
1750
1751    size_t actualSize =
1752        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1753
1754    if (actualSize > 0) {
1755        sink->write(mBuffer, actualSize);
1756    }
1757
1758    return true;
1759}
1760
1761////////////////////////////////////////////////////////////////////////////////
1762
1763status_t MediaPlayerService::AudioCache::open(
1764        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1765        AudioCallback cb, void *cookie)
1766{
1767    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1768    if (mHeap->getHeapID() < 0) {
1769        return NO_INIT;
1770    }
1771
1772    mSampleRate = sampleRate;
1773    mChannelCount = (uint16_t)channelCount;
1774    mFormat = (uint16_t)format;
1775    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1776
1777    if (cb != NULL) {
1778        mCallbackThread = new CallbackThread(this, cb, cookie);
1779    }
1780    return NO_ERROR;
1781}
1782
1783void MediaPlayerService::AudioCache::start() {
1784    if (mCallbackThread != NULL) {
1785        mCallbackThread->run("AudioCache callback");
1786    }
1787}
1788
1789void MediaPlayerService::AudioCache::stop() {
1790    if (mCallbackThread != NULL) {
1791        mCallbackThread->requestExitAndWait();
1792    }
1793}
1794
1795ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1796{
1797    LOGV("write(%p, %u)", buffer, size);
1798    if ((buffer == 0) || (size == 0)) return size;
1799
1800    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1801    if (p == NULL) return NO_INIT;
1802    p += mSize;
1803    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1804    if (mSize + size > mHeap->getSize()) {
1805        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1806        size = mHeap->getSize() - mSize;
1807    }
1808    memcpy(p, buffer, size);
1809    mSize += size;
1810    return size;
1811}
1812
1813// call with lock held
1814status_t MediaPlayerService::AudioCache::wait()
1815{
1816    Mutex::Autolock lock(mLock);
1817    while (!mCommandComplete) {
1818        mSignal.wait(mLock);
1819    }
1820    mCommandComplete = false;
1821
1822    if (mError == NO_ERROR) {
1823        LOGV("wait - success");
1824    } else {
1825        LOGV("wait - error");
1826    }
1827    return mError;
1828}
1829
1830void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1831{
1832    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1833    AudioCache* p = static_cast<AudioCache*>(cookie);
1834
1835    // ignore buffering messages
1836    switch (msg)
1837    {
1838    case MEDIA_ERROR:
1839        LOGE("Error %d, %d occurred", ext1, ext2);
1840        p->mError = ext1;
1841        break;
1842    case MEDIA_PREPARED:
1843        LOGV("prepared");
1844        break;
1845    case MEDIA_PLAYBACK_COMPLETE:
1846        LOGV("playback complete");
1847        break;
1848    default:
1849        LOGV("ignored");
1850        return;
1851    }
1852
1853    // wake up thread
1854    Mutex::Autolock lock(p->mLock);
1855    p->mCommandComplete = true;
1856    p->mSignal.signal();
1857}
1858
1859} // namespace android
1860