MediaPlayerService.cpp revision fe774a9c3ffe12979e182563b0e922ffc0ad20ef 
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)
256{
257    int32_t connId = android_atomic_inc(&mNextConnId);
258    sp<Client> c = new Client(this, pid, connId, client);
259    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
260    if (NO_ERROR != c->setDataSource(url, headers))
261    {
262        c.clear();
263        return c;
264    }
265    wp<Client> w = c;
266    Mutex::Autolock lock(mLock);
267    mClients.add(w);
268    return c;
269}
270
271sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
272        int fd, int64_t offset, int64_t length)
273{
274    int32_t connId = android_atomic_inc(&mNextConnId);
275    sp<Client> c = new Client(this, pid, connId, client);
276    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
277            connId, pid, fd, offset, length);
278    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
279        c.clear();
280    } else {
281        wp<Client> w = c;
282        Mutex::Autolock lock(mLock);
283        mClients.add(w);
284    }
285    ::close(fd);
286    return c;
287}
288
289sp<IOMX> MediaPlayerService::getOMX() {
290    Mutex::Autolock autoLock(mLock);
291
292    if (mOMX.get() == NULL) {
293        mOMX = new OMX;
294    }
295
296    return mOMX;
297}
298
299status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
300{
301    const size_t SIZE = 256;
302    char buffer[SIZE];
303    String8 result;
304
305    result.append(" AudioCache\n");
306    if (mHeap != 0) {
307        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
308                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
309        result.append(buffer);
310    }
311    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
312            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
313    result.append(buffer);
314    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
315            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
316    result.append(buffer);
317    ::write(fd, result.string(), result.size());
318    return NO_ERROR;
319}
320
321status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
322{
323    const size_t SIZE = 256;
324    char buffer[SIZE];
325    String8 result;
326
327    result.append(" AudioOutput\n");
328    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
329            mStreamType, mLeftVolume, mRightVolume);
330    result.append(buffer);
331    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
332            mMsecsPerFrame, mLatency);
333    result.append(buffer);
334    ::write(fd, result.string(), result.size());
335    if (mTrack != 0) {
336        mTrack->dump(fd, args);
337    }
338    return NO_ERROR;
339}
340
341status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
342{
343    const size_t SIZE = 256;
344    char buffer[SIZE];
345    String8 result;
346    result.append(" Client\n");
347    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
348            mPid, mConnId, mStatus, mLoop?"true": "false");
349    result.append(buffer);
350    write(fd, result.string(), result.size());
351    if (mAudioOutput != 0) {
352        mAudioOutput->dump(fd, args);
353    }
354    write(fd, "\n", 1);
355    return NO_ERROR;
356}
357
358static int myTid() {
359#ifdef HAVE_GETTID
360    return gettid();
361#else
362    return getpid();
363#endif
364}
365
366#if defined(__arm__)
367extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
368        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
369extern "C" void free_malloc_leak_info(uint8_t* info);
370
371// Use the String-class below instead of String8 to allocate all memory
372// beforehand and not reenter the heap while we are examining it...
373struct MyString8 {
374    static const size_t MAX_SIZE = 256 * 1024;
375
376    MyString8()
377        : mPtr((char *)malloc(MAX_SIZE)) {
378        *mPtr = '\0';
379    }
380
381    ~MyString8() {
382        free(mPtr);
383    }
384
385    void append(const char *s) {
386        strcat(mPtr, s);
387    }
388
389    const char *string() const {
390        return mPtr;
391    }
392
393    size_t size() const {
394        return strlen(mPtr);
395    }
396
397private:
398    char *mPtr;
399
400    MyString8(const MyString8 &);
401    MyString8 &operator=(const MyString8 &);
402};
403
404void memStatus(int fd, const Vector<String16>& args)
405{
406    const size_t SIZE = 256;
407    char buffer[SIZE];
408    MyString8 result;
409
410    typedef struct {
411        size_t size;
412        size_t dups;
413        intptr_t * backtrace;
414    } AllocEntry;
415
416    uint8_t *info = NULL;
417    size_t overallSize = 0;
418    size_t infoSize = 0;
419    size_t totalMemory = 0;
420    size_t backtraceSize = 0;
421
422    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
423    if (info) {
424        uint8_t *ptr = info;
425        size_t count = overallSize / infoSize;
426
427        snprintf(buffer, SIZE, " Allocation count %i\n", count);
428        result.append(buffer);
429        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
430        result.append(buffer);
431
432        AllocEntry * entries = new AllocEntry[count];
433
434        for (size_t i = 0; i < count; i++) {
435            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
436            AllocEntry *e = &entries[i];
437
438            e->size = *reinterpret_cast<size_t *>(ptr);
439            ptr += sizeof(size_t);
440
441            e->dups = *reinterpret_cast<size_t *>(ptr);
442            ptr += sizeof(size_t);
443
444            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
445            ptr += sizeof(intptr_t) * backtraceSize;
446        }
447
448        // Now we need to sort the entries.  They come sorted by size but
449        // not by stack trace which causes problems using diff.
450        bool moved;
451        do {
452            moved = false;
453            for (size_t i = 0; i < (count - 1); i++) {
454                AllocEntry *e1 = &entries[i];
455                AllocEntry *e2 = &entries[i+1];
456
457                bool swap = e1->size < e2->size;
458                if (e1->size == e2->size) {
459                    for(size_t j = 0; j < backtraceSize; j++) {
460                        if (e1->backtrace[j] == e2->backtrace[j]) {
461                            continue;
462                        }
463                        swap = e1->backtrace[j] < e2->backtrace[j];
464                        break;
465                    }
466                }
467                if (swap) {
468                    AllocEntry t = entries[i];
469                    entries[i] = entries[i+1];
470                    entries[i+1] = t;
471                    moved = true;
472                }
473            }
474        } while (moved);
475
476        for (size_t i = 0; i < count; i++) {
477            AllocEntry *e = &entries[i];
478
479            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
480            result.append(buffer);
481            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
482                if (ct) {
483                    result.append(", ");
484                }
485                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
486                result.append(buffer);
487            }
488            result.append("\n");
489        }
490
491        delete[] entries;
492        free_malloc_leak_info(info);
493    }
494
495    write(fd, result.string(), result.size());
496}
497#endif
498
499status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
500{
501    const size_t SIZE = 256;
502    char buffer[SIZE];
503    String8 result;
504    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
505        snprintf(buffer, SIZE, "Permission Denial: "
506                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
507                IPCThreadState::self()->getCallingPid(),
508                IPCThreadState::self()->getCallingUid());
509        result.append(buffer);
510    } else {
511        Mutex::Autolock lock(mLock);
512        for (int i = 0, n = mClients.size(); i < n; ++i) {
513            sp<Client> c = mClients[i].promote();
514            if (c != 0) c->dump(fd, args);
515        }
516        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
517            result.append(" MediaRecorderClient\n");
518            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
519            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
520            result.append(buffer);
521        }
522
523        result.append(" Files opened and/or mapped:\n");
524        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
525        FILE *f = fopen(buffer, "r");
526        if (f) {
527            while (!feof(f)) {
528                fgets(buffer, SIZE, f);
529                if (strstr(buffer, " /sdcard/") ||
530                    strstr(buffer, " /system/sounds/") ||
531                    strstr(buffer, " /system/media/")) {
532                    result.append("  ");
533                    result.append(buffer);
534                }
535            }
536            fclose(f);
537        } else {
538            result.append("couldn't open ");
539            result.append(buffer);
540            result.append("\n");
541        }
542
543        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
544        DIR *d = opendir(buffer);
545        if (d) {
546            struct dirent *ent;
547            while((ent = readdir(d)) != NULL) {
548                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
549                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
550                    struct stat s;
551                    if (lstat(buffer, &s) == 0) {
552                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
553                            char linkto[256];
554                            int len = readlink(buffer, linkto, sizeof(linkto));
555                            if(len > 0) {
556                                if(len > 255) {
557                                    linkto[252] = '.';
558                                    linkto[253] = '.';
559                                    linkto[254] = '.';
560                                    linkto[255] = 0;
561                                } else {
562                                    linkto[len] = 0;
563                                }
564                                if (strstr(linkto, "/sdcard/") == linkto ||
565                                    strstr(linkto, "/system/sounds/") == linkto ||
566                                    strstr(linkto, "/system/media/") == linkto) {
567                                    result.append("  ");
568                                    result.append(buffer);
569                                    result.append(" -> ");
570                                    result.append(linkto);
571                                    result.append("\n");
572                                }
573                            }
574                        } else {
575                            result.append("  unexpected type for ");
576                            result.append(buffer);
577                            result.append("\n");
578                        }
579                    }
580                }
581            }
582            closedir(d);
583        } else {
584            result.append("couldn't open ");
585            result.append(buffer);
586            result.append("\n");
587        }
588
589#if defined(__arm__)
590        bool dumpMem = false;
591        for (size_t i = 0; i < args.size(); i++) {
592            if (args[i] == String16("-m")) {
593                dumpMem = true;
594            }
595        }
596        if (dumpMem) {
597            memStatus(fd, args);
598        }
599#endif
600    }
601    write(fd, result.string(), result.size());
602    return NO_ERROR;
603}
604
605void MediaPlayerService::removeClient(wp<Client> client)
606{
607    Mutex::Autolock lock(mLock);
608    mClients.remove(client);
609}
610
611MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
612        int32_t connId, const sp<IMediaPlayerClient>& client)
613{
614    LOGV("Client(%d) constructor", connId);
615    mPid = pid;
616    mConnId = connId;
617    mService = service;
618    mClient = client;
619    mLoop = false;
620    mStatus = NO_INIT;
621#if CALLBACK_ANTAGONIZER
622    LOGD("create Antagonizer");
623    mAntagonizer = new Antagonizer(notify, this);
624#endif
625}
626
627MediaPlayerService::Client::~Client()
628{
629    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
630    mAudioOutput.clear();
631    wp<Client> client(this);
632    disconnect();
633    mService->removeClient(client);
634}
635
636void MediaPlayerService::Client::disconnect()
637{
638    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
639    // grab local reference and clear main reference to prevent future
640    // access to object
641    sp<MediaPlayerBase> p;
642    {
643        Mutex::Autolock l(mLock);
644        p = mPlayer;
645    }
646    mClient.clear();
647
648    mPlayer.clear();
649
650    // clear the notification to prevent callbacks to dead client
651    // and reset the player. We assume the player will serialize
652    // access to itself if necessary.
653    if (p != 0) {
654        p->setNotifyCallback(0, 0);
655#if CALLBACK_ANTAGONIZER
656        LOGD("kill Antagonizer");
657        mAntagonizer->kill();
658#endif
659        p->reset();
660    }
661
662    IPCThreadState::self()->flushCommands();
663}
664
665static player_type getDefaultPlayerType() {
666#if BUILD_WITH_FULL_STAGEFRIGHT
667    char value[PROPERTY_VALUE_MAX];
668    if (property_get("media.stagefright.enable-player", value, NULL)
669        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
670        return STAGEFRIGHT_PLAYER;
671    }
672#endif
673
674    return PV_PLAYER;
675}
676
677player_type getPlayerType(int fd, int64_t offset, int64_t length)
678{
679    char buf[20];
680    lseek(fd, offset, SEEK_SET);
681    read(fd, buf, sizeof(buf));
682    lseek(fd, offset, SEEK_SET);
683
684    long ident = *((long*)buf);
685
686    // Ogg vorbis?
687    if (ident == 0x5367674f) // 'OggS'
688        return VORBIS_PLAYER;
689
690#ifndef NO_OPENCORE
691    if (ident == 0x75b22630) {
692        // The magic number for .asf files, i.e. wmv and wma content.
693        // These are not currently supported through stagefright.
694        return PV_PLAYER;
695    }
696#endif
697
698    // Some kind of MIDI?
699    EAS_DATA_HANDLE easdata;
700    if (EAS_Init(&easdata) == EAS_SUCCESS) {
701        EAS_FILE locator;
702        locator.path = NULL;
703        locator.fd = fd;
704        locator.offset = offset;
705        locator.length = length;
706        EAS_HANDLE  eashandle;
707        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
708            EAS_CloseFile(easdata, eashandle);
709            EAS_Shutdown(easdata);
710            return SONIVOX_PLAYER;
711        }
712        EAS_Shutdown(easdata);
713    }
714
715    return getDefaultPlayerType();
716}
717
718player_type getPlayerType(const char* url)
719{
720    if (TestPlayerStub::canBeUsed(url)) {
721        return TEST_PLAYER;
722    }
723
724    // use MidiFile for MIDI extensions
725    int lenURL = strlen(url);
726    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
727        int len = strlen(FILE_EXTS[i].extension);
728        int start = lenURL - len;
729        if (start > 0) {
730            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
731                return FILE_EXTS[i].playertype;
732            }
733        }
734    }
735
736    if (!strncasecmp(url, "http://", 7)) {
737        char value[PROPERTY_VALUE_MAX];
738        if (!property_get("media.stagefright.enable-http", value, NULL)
739            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
740            // For now, we're going to use PV for http-based playback
741            // by default until we can clear up a few more issues.
742            return PV_PLAYER;
743        }
744    }
745
746    return getDefaultPlayerType();
747}
748
749static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
750        notify_callback_f notifyFunc)
751{
752    sp<MediaPlayerBase> p;
753    switch (playerType) {
754#ifndef NO_OPENCORE
755        case PV_PLAYER:
756            LOGV(" create PVPlayer");
757            p = new PVPlayer();
758            break;
759#endif
760        case SONIVOX_PLAYER:
761            LOGV(" create MidiFile");
762            p = new MidiFile();
763            break;
764        case VORBIS_PLAYER:
765            LOGV(" create VorbisPlayer");
766            p = new VorbisPlayer();
767            break;
768#if BUILD_WITH_FULL_STAGEFRIGHT
769        case STAGEFRIGHT_PLAYER:
770            LOGV(" create StagefrightPlayer");
771            p = new StagefrightPlayer;
772            break;
773#endif
774        case TEST_PLAYER:
775            LOGV("Create Test Player stub");
776            p = new TestPlayerStub();
777            break;
778    }
779    if (p != NULL) {
780        if (p->initCheck() == NO_ERROR) {
781            p->setNotifyCallback(cookie, notifyFunc);
782        } else {
783            p.clear();
784        }
785    }
786    if (p == NULL) {
787        LOGE("Failed to create player object");
788    }
789    return p;
790}
791
792sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
793{
794    // determine if we have the right player type
795    sp<MediaPlayerBase> p = mPlayer;
796    if ((p != NULL) && (p->playerType() != playerType)) {
797        LOGV("delete player");
798        p.clear();
799    }
800    if (p == NULL) {
801        p = android::createPlayer(playerType, this, notify);
802    }
803    return p;
804}
805
806status_t MediaPlayerService::Client::setDataSource(
807        const char *url, const KeyedVector<String8, String8> *headers)
808{
809    LOGV("setDataSource(%s)", url);
810    if (url == NULL)
811        return UNKNOWN_ERROR;
812
813    if (strncmp(url, "content://", 10) == 0) {
814        // get a filedescriptor for the content Uri and
815        // pass it to the setDataSource(fd) method
816
817        String16 url16(url);
818        int fd = android::openContentProviderFile(url16);
819        if (fd < 0)
820        {
821            LOGE("Couldn't open fd for %s", url);
822            return UNKNOWN_ERROR;
823        }
824        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
825        close(fd);
826        return mStatus;
827    } else {
828        player_type playerType = getPlayerType(url);
829        LOGV("player type = %d", playerType);
830
831        // create the right type of player
832        sp<MediaPlayerBase> p = createPlayer(playerType);
833        if (p == NULL) return NO_INIT;
834
835        if (!p->hardwareOutput()) {
836            mAudioOutput = new AudioOutput();
837            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
838        }
839
840        // now set data source
841        LOGV(" setDataSource");
842        mStatus = p->setDataSource(url, headers);
843        if (mStatus == NO_ERROR) {
844            mPlayer = p;
845        } else {
846            LOGE("  error: %d", mStatus);
847        }
848        return mStatus;
849    }
850}
851
852status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
853{
854    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
855    struct stat sb;
856    int ret = fstat(fd, &sb);
857    if (ret != 0) {
858        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
859        return UNKNOWN_ERROR;
860    }
861
862    LOGV("st_dev  = %llu", sb.st_dev);
863    LOGV("st_mode = %u", sb.st_mode);
864    LOGV("st_uid  = %lu", sb.st_uid);
865    LOGV("st_gid  = %lu", sb.st_gid);
866    LOGV("st_size = %llu", sb.st_size);
867
868    if (offset >= sb.st_size) {
869        LOGE("offset error");
870        ::close(fd);
871        return UNKNOWN_ERROR;
872    }
873    if (offset + length > sb.st_size) {
874        length = sb.st_size - offset;
875        LOGV("calculated length = %lld", length);
876    }
877
878    player_type playerType = getPlayerType(fd, offset, length);
879    LOGV("player type = %d", playerType);
880
881    // create the right type of player
882    sp<MediaPlayerBase> p = createPlayer(playerType);
883    if (p == NULL) return NO_INIT;
884
885    if (!p->hardwareOutput()) {
886        mAudioOutput = new AudioOutput();
887        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
888    }
889
890    // now set data source
891    mStatus = p->setDataSource(fd, offset, length);
892    if (mStatus == NO_ERROR) mPlayer = p;
893    return mStatus;
894}
895
896status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
897{
898    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
899    sp<MediaPlayerBase> p = getPlayer();
900    if (p == 0) return UNKNOWN_ERROR;
901    return p->setVideoSurface(surface);
902}
903
904status_t MediaPlayerService::Client::invoke(const Parcel& request,
905                                            Parcel *reply)
906{
907    sp<MediaPlayerBase> p = getPlayer();
908    if (p == NULL) return UNKNOWN_ERROR;
909    return p->invoke(request, reply);
910}
911
912// This call doesn't need to access the native player.
913status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
914{
915    status_t status;
916    media::Metadata::Filter allow, drop;
917
918    if (unmarshallFilter(filter, &allow, &status) &&
919        unmarshallFilter(filter, &drop, &status)) {
920        Mutex::Autolock lock(mLock);
921
922        mMetadataAllow = allow;
923        mMetadataDrop = drop;
924    }
925    return status;
926}
927
928status_t MediaPlayerService::Client::getMetadata(
929        bool update_only, bool apply_filter, Parcel *reply)
930{
931    sp<MediaPlayerBase> player = getPlayer();
932    if (player == 0) return UNKNOWN_ERROR;
933
934    status_t status;
935    // Placeholder for the return code, updated by the caller.
936    reply->writeInt32(-1);
937
938    media::Metadata::Filter ids;
939
940    // We don't block notifications while we fetch the data. We clear
941    // mMetadataUpdated first so we don't lose notifications happening
942    // during the rest of this call.
943    {
944        Mutex::Autolock lock(mLock);
945        if (update_only) {
946            ids = mMetadataUpdated;
947        }
948        mMetadataUpdated.clear();
949    }
950
951    media::Metadata metadata(reply);
952
953    metadata.appendHeader();
954    status = player->getMetadata(ids, reply);
955
956    if (status != OK) {
957        metadata.resetParcel();
958        LOGE("getMetadata failed %d", status);
959        return status;
960    }
961
962    // FIXME: Implement filtering on the result. Not critical since
963    // filtering takes place on the update notifications already. This
964    // would be when all the metadata are fetch and a filter is set.
965
966    // Everything is fine, update the metadata length.
967    metadata.updateLength();
968    return OK;
969}
970
971status_t MediaPlayerService::Client::suspend() {
972    sp<MediaPlayerBase> p = getPlayer();
973    if (p == 0) return UNKNOWN_ERROR;
974
975    return p->suspend();
976}
977
978status_t MediaPlayerService::Client::resume() {
979    sp<MediaPlayerBase> p = getPlayer();
980    if (p == 0) return UNKNOWN_ERROR;
981
982    return p->resume();
983}
984
985status_t MediaPlayerService::Client::prepareAsync()
986{
987    LOGV("[%d] prepareAsync", mConnId);
988    sp<MediaPlayerBase> p = getPlayer();
989    if (p == 0) return UNKNOWN_ERROR;
990    status_t ret = p->prepareAsync();
991#if CALLBACK_ANTAGONIZER
992    LOGD("start Antagonizer");
993    if (ret == NO_ERROR) mAntagonizer->start();
994#endif
995    return ret;
996}
997
998status_t MediaPlayerService::Client::start()
999{
1000    LOGV("[%d] start", mConnId);
1001    sp<MediaPlayerBase> p = getPlayer();
1002    if (p == 0) return UNKNOWN_ERROR;
1003    p->setLooping(mLoop);
1004    return p->start();
1005}
1006
1007status_t MediaPlayerService::Client::stop()
1008{
1009    LOGV("[%d] stop", mConnId);
1010    sp<MediaPlayerBase> p = getPlayer();
1011    if (p == 0) return UNKNOWN_ERROR;
1012    return p->stop();
1013}
1014
1015status_t MediaPlayerService::Client::pause()
1016{
1017    LOGV("[%d] pause", mConnId);
1018    sp<MediaPlayerBase> p = getPlayer();
1019    if (p == 0) return UNKNOWN_ERROR;
1020    return p->pause();
1021}
1022
1023status_t MediaPlayerService::Client::isPlaying(bool* state)
1024{
1025    *state = false;
1026    sp<MediaPlayerBase> p = getPlayer();
1027    if (p == 0) return UNKNOWN_ERROR;
1028    *state = p->isPlaying();
1029    LOGV("[%d] isPlaying: %d", mConnId, *state);
1030    return NO_ERROR;
1031}
1032
1033status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1034{
1035    LOGV("getCurrentPosition");
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    status_t ret = p->getCurrentPosition(msec);
1039    if (ret == NO_ERROR) {
1040        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1041    } else {
1042        LOGE("getCurrentPosition returned %d", ret);
1043    }
1044    return ret;
1045}
1046
1047status_t MediaPlayerService::Client::getDuration(int *msec)
1048{
1049    LOGV("getDuration");
1050    sp<MediaPlayerBase> p = getPlayer();
1051    if (p == 0) return UNKNOWN_ERROR;
1052    status_t ret = p->getDuration(msec);
1053    if (ret == NO_ERROR) {
1054        LOGV("[%d] getDuration = %d", mConnId, *msec);
1055    } else {
1056        LOGE("getDuration returned %d", ret);
1057    }
1058    return ret;
1059}
1060
1061status_t MediaPlayerService::Client::seekTo(int msec)
1062{
1063    LOGV("[%d] seekTo(%d)", mConnId, msec);
1064    sp<MediaPlayerBase> p = getPlayer();
1065    if (p == 0) return UNKNOWN_ERROR;
1066    return p->seekTo(msec);
1067}
1068
1069status_t MediaPlayerService::Client::reset()
1070{
1071    LOGV("[%d] reset", mConnId);
1072    sp<MediaPlayerBase> p = getPlayer();
1073    if (p == 0) return UNKNOWN_ERROR;
1074    return p->reset();
1075}
1076
1077status_t MediaPlayerService::Client::setAudioStreamType(int type)
1078{
1079    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1080    // TODO: for hardware output, call player instead
1081    Mutex::Autolock l(mLock);
1082    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1083    return NO_ERROR;
1084}
1085
1086status_t MediaPlayerService::Client::setLooping(int loop)
1087{
1088    LOGV("[%d] setLooping(%d)", mConnId, loop);
1089    mLoop = loop;
1090    sp<MediaPlayerBase> p = getPlayer();
1091    if (p != 0) return p->setLooping(loop);
1092    return NO_ERROR;
1093}
1094
1095status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1096{
1097    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1098    // TODO: for hardware output, call player instead
1099    Mutex::Autolock l(mLock);
1100    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1101    return NO_ERROR;
1102}
1103
1104
1105void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1106{
1107    Client* client = static_cast<Client*>(cookie);
1108
1109    if (MEDIA_INFO == msg &&
1110        MEDIA_INFO_METADATA_UPDATE == ext1) {
1111        const media::Metadata::Type metadata_type = ext2;
1112
1113        if(client->shouldDropMetadata(metadata_type)) {
1114            return;
1115        }
1116
1117        // Update the list of metadata that have changed. getMetadata
1118        // also access mMetadataUpdated and clears it.
1119        client->addNewMetadataUpdate(metadata_type);
1120    }
1121    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1122    client->mClient->notify(msg, ext1, ext2);
1123}
1124
1125
1126bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1127{
1128    Mutex::Autolock lock(mLock);
1129
1130    if (findMetadata(mMetadataDrop, code)) {
1131        return true;
1132    }
1133
1134    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1135        return false;
1136    } else {
1137        return true;
1138    }
1139}
1140
1141
1142void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1143    Mutex::Autolock lock(mLock);
1144    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1145        mMetadataUpdated.add(metadata_type);
1146    }
1147}
1148
1149#if CALLBACK_ANTAGONIZER
1150const int Antagonizer::interval = 10000; // 10 msecs
1151
1152Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1153    mExit(false), mActive(false), mClient(client), mCb(cb)
1154{
1155    createThread(callbackThread, this);
1156}
1157
1158void Antagonizer::kill()
1159{
1160    Mutex::Autolock _l(mLock);
1161    mActive = false;
1162    mExit = true;
1163    mCondition.wait(mLock);
1164}
1165
1166int Antagonizer::callbackThread(void* user)
1167{
1168    LOGD("Antagonizer started");
1169    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1170    while (!p->mExit) {
1171        if (p->mActive) {
1172            LOGV("send event");
1173            p->mCb(p->mClient, 0, 0, 0);
1174        }
1175        usleep(interval);
1176    }
1177    Mutex::Autolock _l(p->mLock);
1178    p->mCondition.signal();
1179    LOGD("Antagonizer stopped");
1180    return 0;
1181}
1182#endif
1183
1184static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1185
1186sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1187{
1188    LOGV("decode(%s)", url);
1189    sp<MemoryBase> mem;
1190    sp<MediaPlayerBase> player;
1191
1192    // Protect our precious, precious DRMd ringtones by only allowing
1193    // decoding of http, but not filesystem paths or content Uris.
1194    // If the application wants to decode those, it should open a
1195    // filedescriptor for them and use that.
1196    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1197        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1198        return mem;
1199    }
1200
1201    player_type playerType = getPlayerType(url);
1202    LOGV("player type = %d", playerType);
1203
1204    // create the right type of player
1205    sp<AudioCache> cache = new AudioCache(url);
1206    player = android::createPlayer(playerType, cache.get(), cache->notify);
1207    if (player == NULL) goto Exit;
1208    if (player->hardwareOutput()) goto Exit;
1209
1210    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1211
1212    // set data source
1213    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1214
1215    LOGV("prepare");
1216    player->prepareAsync();
1217
1218    LOGV("wait for prepare");
1219    if (cache->wait() != NO_ERROR) goto Exit;
1220
1221    LOGV("start");
1222    player->start();
1223
1224    LOGV("wait for playback complete");
1225    if (cache->wait() != NO_ERROR) goto Exit;
1226
1227    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1228    *pSampleRate = cache->sampleRate();
1229    *pNumChannels = cache->channelCount();
1230    *pFormat = cache->format();
1231    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1232
1233Exit:
1234    if (player != 0) player->reset();
1235    return mem;
1236}
1237
1238sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1239{
1240    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1241    sp<MemoryBase> mem;
1242    sp<MediaPlayerBase> player;
1243
1244    player_type playerType = getPlayerType(fd, offset, length);
1245    LOGV("player type = %d", playerType);
1246
1247    // create the right type of player
1248    sp<AudioCache> cache = new AudioCache("decode_fd");
1249    player = android::createPlayer(playerType, cache.get(), cache->notify);
1250    if (player == NULL) goto Exit;
1251    if (player->hardwareOutput()) goto Exit;
1252
1253    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1254
1255    // set data source
1256    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1257
1258    LOGV("prepare");
1259    player->prepareAsync();
1260
1261    LOGV("wait for prepare");
1262    if (cache->wait() != NO_ERROR) goto Exit;
1263
1264    LOGV("start");
1265    player->start();
1266
1267    LOGV("wait for playback complete");
1268    if (cache->wait() != NO_ERROR) goto Exit;
1269
1270    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1271    *pSampleRate = cache->sampleRate();
1272    *pNumChannels = cache->channelCount();
1273    *pFormat = cache->format();
1274    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1275
1276Exit:
1277    if (player != 0) player->reset();
1278    ::close(fd);
1279    return mem;
1280}
1281
1282/*
1283 * Avert your eyes, ugly hack ahead.
1284 * The following is to support music visualizations.
1285 */
1286
1287static const int NUMVIZBUF = 32;
1288static const int VIZBUFFRAMES = 1024;
1289static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1290static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1291
1292static bool gotMem = false;
1293static sp<MemoryHeapBase> heap;
1294static sp<MemoryBase> mem[NUMVIZBUF];
1295static uint64_t endTime;
1296static uint64_t lastReadTime;
1297static uint64_t lastWriteTime;
1298static int writeIdx = 0;
1299
1300static void allocVizBufs() {
1301    if (!gotMem) {
1302        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1303        for (int i=0;i<NUMVIZBUF;i++) {
1304            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1305        }
1306        endTime = 0;
1307        gotMem = true;
1308    }
1309}
1310
1311
1312/*
1313 * Get a buffer of audio data that is about to be played.
1314 * We don't synchronize this because in practice the writer
1315 * is ahead of the reader, and even if we did happen to catch
1316 * a buffer while it's being written, it's just a visualization,
1317 * so no harm done.
1318 */
1319static sp<MemoryBase> getVizBuffer() {
1320
1321    allocVizBufs();
1322
1323    lastReadTime = uptimeMillis();
1324
1325    // if there is no recent buffer (yet), just return empty handed
1326    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1327        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1328        return NULL;
1329    }
1330
1331    int timedelta = endTime - lastReadTime;
1332    if (timedelta < 0) timedelta = 0;
1333    int framedelta = timedelta * 44100 / 1000;
1334    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1335    while (headIdx < 0) {
1336        headIdx += NUMVIZBUF;
1337    }
1338    return mem[headIdx];
1339}
1340
1341// Append the data to the vizualization buffer
1342static void makeVizBuffers(const char *data, int len, uint64_t time) {
1343
1344    allocVizBufs();
1345
1346    uint64_t startTime = time;
1347    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1348    int offset = writeIdx;
1349    int maxoff = heap->getSize() / 2; // in shorts
1350    short *base = (short*)heap->getBase();
1351    short *src = (short*)data;
1352    while (len > 0) {
1353
1354        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1355        // This should still be good enough for a visualization
1356        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1357        src += 2;
1358        len -= frameSize;
1359        if (offset >= maxoff) {
1360            offset = 0;
1361        }
1362    }
1363    writeIdx = offset;
1364    endTime = time + (len / frameSize) / 44;
1365    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1366}
1367
1368sp<IMemory> MediaPlayerService::snoop()
1369{
1370    sp<MemoryBase> mem = getVizBuffer();
1371    return mem;
1372}
1373
1374
1375#undef LOG_TAG
1376#define LOG_TAG "AudioSink"
1377MediaPlayerService::AudioOutput::AudioOutput()
1378    : mCallback(NULL),
1379      mCallbackCookie(NULL) {
1380    mTrack = 0;
1381    mStreamType = AudioSystem::MUSIC;
1382    mLeftVolume = 1.0;
1383    mRightVolume = 1.0;
1384    mLatency = 0;
1385    mMsecsPerFrame = 0;
1386    mNumFramesWritten = 0;
1387    setMinBufferCount();
1388}
1389
1390MediaPlayerService::AudioOutput::~AudioOutput()
1391{
1392    close();
1393}
1394
1395void MediaPlayerService::AudioOutput::setMinBufferCount()
1396{
1397    char value[PROPERTY_VALUE_MAX];
1398    if (property_get("ro.kernel.qemu", value, 0)) {
1399        mIsOnEmulator = true;
1400        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1401    }
1402}
1403
1404bool MediaPlayerService::AudioOutput::isOnEmulator()
1405{
1406    setMinBufferCount();
1407    return mIsOnEmulator;
1408}
1409
1410int MediaPlayerService::AudioOutput::getMinBufferCount()
1411{
1412    setMinBufferCount();
1413    return mMinBufferCount;
1414}
1415
1416ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1417{
1418    if (mTrack == 0) return NO_INIT;
1419    return mTrack->frameCount() * frameSize();
1420}
1421
1422ssize_t MediaPlayerService::AudioOutput::frameCount() const
1423{
1424    if (mTrack == 0) return NO_INIT;
1425    return mTrack->frameCount();
1426}
1427
1428ssize_t MediaPlayerService::AudioOutput::channelCount() const
1429{
1430    if (mTrack == 0) return NO_INIT;
1431    return mTrack->channelCount();
1432}
1433
1434ssize_t MediaPlayerService::AudioOutput::frameSize() const
1435{
1436    if (mTrack == 0) return NO_INIT;
1437    return mTrack->frameSize();
1438}
1439
1440uint32_t MediaPlayerService::AudioOutput::latency () const
1441{
1442    return mLatency;
1443}
1444
1445float MediaPlayerService::AudioOutput::msecsPerFrame() const
1446{
1447    return mMsecsPerFrame;
1448}
1449
1450status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1451{
1452    if (mTrack == 0) return NO_INIT;
1453    return mTrack->getPosition(position);
1454}
1455
1456status_t MediaPlayerService::AudioOutput::open(
1457        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1458        AudioCallback cb, void *cookie)
1459{
1460    mCallback = cb;
1461    mCallbackCookie = cookie;
1462
1463    // Check argument "bufferCount" against the mininum buffer count
1464    if (bufferCount < mMinBufferCount) {
1465        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1466        bufferCount = mMinBufferCount;
1467
1468    }
1469    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1470    if (mTrack) close();
1471    int afSampleRate;
1472    int afFrameCount;
1473    int frameCount;
1474
1475    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1476        return NO_INIT;
1477    }
1478    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1479        return NO_INIT;
1480    }
1481
1482    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1483
1484    AudioTrack *t;
1485    if (mCallback != NULL) {
1486        t = new AudioTrack(
1487                mStreamType,
1488                sampleRate,
1489                format,
1490                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1491                frameCount,
1492                0 /* flags */,
1493                CallbackWrapper,
1494                this);
1495    } else {
1496        t = new AudioTrack(
1497                mStreamType,
1498                sampleRate,
1499                format,
1500                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1501                frameCount);
1502    }
1503
1504    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1505        LOGE("Unable to create audio track");
1506        delete t;
1507        return NO_INIT;
1508    }
1509
1510    LOGV("setVolume");
1511    t->setVolume(mLeftVolume, mRightVolume);
1512    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1513    mLatency = t->latency();
1514    mTrack = t;
1515    return NO_ERROR;
1516}
1517
1518void MediaPlayerService::AudioOutput::start()
1519{
1520    LOGV("start");
1521    if (mTrack) {
1522        mTrack->setVolume(mLeftVolume, mRightVolume);
1523        mTrack->start();
1524        mTrack->getPosition(&mNumFramesWritten);
1525    }
1526}
1527
1528void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1529    // Only make visualization buffers if anyone recently requested visualization data
1530    uint64_t now = uptimeMillis();
1531    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1532        // Based on the current play counter, the number of frames written and
1533        // the current real time we can calculate the approximate real start
1534        // time of the buffer we're about to write.
1535        uint32_t pos;
1536        mTrack->getPosition(&pos);
1537
1538        // we're writing ahead by this many frames:
1539        int ahead = mNumFramesWritten - pos;
1540        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1541        // which is this many milliseconds, assuming 44100 Hz:
1542        ahead /= 44;
1543
1544        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1545        lastWriteTime = now;
1546    }
1547}
1548
1549
1550ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1551{
1552    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1553
1554    //LOGV("write(%p, %u)", buffer, size);
1555    if (mTrack) {
1556        snoopWrite(buffer, size);
1557        ssize_t ret = mTrack->write(buffer, size);
1558        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1559        return ret;
1560    }
1561    return NO_INIT;
1562}
1563
1564void MediaPlayerService::AudioOutput::stop()
1565{
1566    LOGV("stop");
1567    if (mTrack) mTrack->stop();
1568    lastWriteTime = 0;
1569}
1570
1571void MediaPlayerService::AudioOutput::flush()
1572{
1573    LOGV("flush");
1574    if (mTrack) mTrack->flush();
1575}
1576
1577void MediaPlayerService::AudioOutput::pause()
1578{
1579    LOGV("pause");
1580    if (mTrack) mTrack->pause();
1581    lastWriteTime = 0;
1582}
1583
1584void MediaPlayerService::AudioOutput::close()
1585{
1586    LOGV("close");
1587    delete mTrack;
1588    mTrack = 0;
1589}
1590
1591void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1592{
1593    LOGV("setVolume(%f, %f)", left, right);
1594    mLeftVolume = left;
1595    mRightVolume = right;
1596    if (mTrack) {
1597        mTrack->setVolume(left, right);
1598    }
1599}
1600
1601// static
1602void MediaPlayerService::AudioOutput::CallbackWrapper(
1603        int event, void *cookie, void *info) {
1604    //LOGV("callbackwrapper");
1605    if (event != AudioTrack::EVENT_MORE_DATA) {
1606        return;
1607    }
1608
1609    AudioOutput *me = (AudioOutput *)cookie;
1610    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1611
1612    size_t actualSize = (*me->mCallback)(
1613            me, buffer->raw, buffer->size, me->mCallbackCookie);
1614
1615    buffer->size = actualSize;
1616
1617    if (actualSize > 0) {
1618        me->snoopWrite(buffer->raw, actualSize);
1619    }
1620}
1621
1622#undef LOG_TAG
1623#define LOG_TAG "AudioCache"
1624MediaPlayerService::AudioCache::AudioCache(const char* name) :
1625    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1626    mError(NO_ERROR), mCommandComplete(false)
1627{
1628    // create ashmem heap
1629    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1630}
1631
1632uint32_t MediaPlayerService::AudioCache::latency () const
1633{
1634    return 0;
1635}
1636
1637float MediaPlayerService::AudioCache::msecsPerFrame() const
1638{
1639    return mMsecsPerFrame;
1640}
1641
1642status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1643{
1644    if (position == 0) return BAD_VALUE;
1645    *position = mSize;
1646    return NO_ERROR;
1647}
1648
1649////////////////////////////////////////////////////////////////////////////////
1650
1651struct CallbackThread : public Thread {
1652    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1653                   MediaPlayerBase::AudioSink::AudioCallback cb,
1654                   void *cookie);
1655
1656protected:
1657    virtual ~CallbackThread();
1658
1659    virtual bool threadLoop();
1660
1661private:
1662    wp<MediaPlayerBase::AudioSink> mSink;
1663    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1664    void *mCookie;
1665    void *mBuffer;
1666    size_t mBufferSize;
1667
1668    CallbackThread(const CallbackThread &);
1669    CallbackThread &operator=(const CallbackThread &);
1670};
1671
1672CallbackThread::CallbackThread(
1673        const wp<MediaPlayerBase::AudioSink> &sink,
1674        MediaPlayerBase::AudioSink::AudioCallback cb,
1675        void *cookie)
1676    : mSink(sink),
1677      mCallback(cb),
1678      mCookie(cookie),
1679      mBuffer(NULL),
1680      mBufferSize(0) {
1681}
1682
1683CallbackThread::~CallbackThread() {
1684    if (mBuffer) {
1685        free(mBuffer);
1686        mBuffer = NULL;
1687    }
1688}
1689
1690bool CallbackThread::threadLoop() {
1691    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1692    if (sink == NULL) {
1693        return false;
1694    }
1695
1696    if (mBuffer == NULL) {
1697        mBufferSize = sink->bufferSize();
1698        mBuffer = malloc(mBufferSize);
1699    }
1700
1701    size_t actualSize =
1702        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1703
1704    if (actualSize > 0) {
1705        sink->write(mBuffer, actualSize);
1706    }
1707
1708    return true;
1709}
1710
1711////////////////////////////////////////////////////////////////////////////////
1712
1713status_t MediaPlayerService::AudioCache::open(
1714        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1715        AudioCallback cb, void *cookie)
1716{
1717    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1718    if (mHeap->getHeapID() < 0) {
1719        return NO_INIT;
1720    }
1721
1722    mSampleRate = sampleRate;
1723    mChannelCount = (uint16_t)channelCount;
1724    mFormat = (uint16_t)format;
1725    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1726
1727    if (cb != NULL) {
1728        mCallbackThread = new CallbackThread(this, cb, cookie);
1729    }
1730    return NO_ERROR;
1731}
1732
1733void MediaPlayerService::AudioCache::start() {
1734    if (mCallbackThread != NULL) {
1735        mCallbackThread->run("AudioCache callback");
1736    }
1737}
1738
1739void MediaPlayerService::AudioCache::stop() {
1740    if (mCallbackThread != NULL) {
1741        mCallbackThread->requestExitAndWait();
1742    }
1743}
1744
1745ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1746{
1747    LOGV("write(%p, %u)", buffer, size);
1748    if ((buffer == 0) || (size == 0)) return size;
1749
1750    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1751    if (p == NULL) return NO_INIT;
1752    p += mSize;
1753    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1754    if (mSize + size > mHeap->getSize()) {
1755        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1756        size = mHeap->getSize() - mSize;
1757    }
1758    memcpy(p, buffer, size);
1759    mSize += size;
1760    return size;
1761}
1762
1763// call with lock held
1764status_t MediaPlayerService::AudioCache::wait()
1765{
1766    Mutex::Autolock lock(mLock);
1767    while (!mCommandComplete) {
1768        mSignal.wait(mLock);
1769    }
1770    mCommandComplete = false;
1771
1772    if (mError == NO_ERROR) {
1773        LOGV("wait - success");
1774    } else {
1775        LOGV("wait - error");
1776    }
1777    return mError;
1778}
1779
1780void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1781{
1782    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1783    AudioCache* p = static_cast<AudioCache*>(cookie);
1784
1785    // ignore buffering messages
1786    switch (msg)
1787    {
1788    case MEDIA_ERROR:
1789        LOGE("Error %d, %d occurred", ext1, ext2);
1790        p->mError = ext1;
1791        break;
1792    case MEDIA_PREPARED:
1793        LOGV("prepared");
1794        break;
1795    case MEDIA_PLAYBACK_COMPLETE:
1796        LOGV("playback complete");
1797        break;
1798    default:
1799        LOGV("ignored");
1800        return;
1801    }
1802
1803    // wake up thread
1804    Mutex::Autolock lock(p->mLock);
1805    p->mCommandComplete = true;
1806    p->mSignal.signal();
1807}
1808
1809} // namespace android
1810