MediaPlayerService.cpp revision 2e90514be4c98b5fa6e1df5f2049a5e005a4263d 
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
677// By default we use the VORBIS_PLAYER for vorbis playback (duh!),
678// but if the magic property is set we will use our new experimental
679// stagefright code instead.
680static player_type OverrideStagefrightForVorbis(player_type player) {
681    if (player != VORBIS_PLAYER) {
682        return player;
683    }
684
685#if BUILD_WITH_FULL_STAGEFRIGHT
686    char value[PROPERTY_VALUE_MAX];
687    if (property_get("media.stagefright.enable-vorbis", value, NULL)
688        && (!strcmp(value, "1") || !strcmp(value, "true"))) {
689        return STAGEFRIGHT_PLAYER;
690    }
691#endif
692
693    return VORBIS_PLAYER;
694}
695
696
697player_type getPlayerType(int fd, int64_t offset, int64_t length)
698{
699    char buf[20];
700    lseek(fd, offset, SEEK_SET);
701    read(fd, buf, sizeof(buf));
702    lseek(fd, offset, SEEK_SET);
703
704    long ident = *((long*)buf);
705
706    // Ogg vorbis?
707    if (ident == 0x5367674f) // 'OggS'
708        return OverrideStagefrightForVorbis(VORBIS_PLAYER);
709
710#ifndef NO_OPENCORE
711    if (ident == 0x75b22630) {
712        // The magic number for .asf files, i.e. wmv and wma content.
713        // These are not currently supported through stagefright.
714        return PV_PLAYER;
715    }
716#endif
717
718    // Some kind of MIDI?
719    EAS_DATA_HANDLE easdata;
720    if (EAS_Init(&easdata) == EAS_SUCCESS) {
721        EAS_FILE locator;
722        locator.path = NULL;
723        locator.fd = fd;
724        locator.offset = offset;
725        locator.length = length;
726        EAS_HANDLE  eashandle;
727        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
728            EAS_CloseFile(easdata, eashandle);
729            EAS_Shutdown(easdata);
730            return SONIVOX_PLAYER;
731        }
732        EAS_Shutdown(easdata);
733    }
734
735    return getDefaultPlayerType();
736}
737
738player_type getPlayerType(const char* url)
739{
740    if (TestPlayerStub::canBeUsed(url)) {
741        return TEST_PLAYER;
742    }
743
744    bool useStagefrightForHTTP = false;
745    char value[PROPERTY_VALUE_MAX];
746    if (property_get("media.stagefright.enable-http", value, NULL)
747        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
748        useStagefrightForHTTP = true;
749    }
750
751    // use MidiFile for MIDI extensions
752    int lenURL = strlen(url);
753    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
754        int len = strlen(FILE_EXTS[i].extension);
755        int start = lenURL - len;
756        if (start > 0) {
757            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
758                if (FILE_EXTS[i].playertype == VORBIS_PLAYER
759                    && !strncasecmp(url, "http://", 7)
760                    && useStagefrightForHTTP) {
761                    return STAGEFRIGHT_PLAYER;
762                }
763                return OverrideStagefrightForVorbis(FILE_EXTS[i].playertype);
764            }
765        }
766    }
767
768    if (!strncasecmp(url, "http://", 7)) {
769        if (!useStagefrightForHTTP) {
770            return PV_PLAYER;
771        }
772    }
773
774    // Use PV_PLAYER for rtsp for now
775    if (!strncasecmp(url, "rtsp://", 7)) {
776        return PV_PLAYER;
777    }
778
779    return getDefaultPlayerType();
780}
781
782static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
783        notify_callback_f notifyFunc)
784{
785    sp<MediaPlayerBase> p;
786    switch (playerType) {
787#ifndef NO_OPENCORE
788        case PV_PLAYER:
789            LOGV(" create PVPlayer");
790            p = new PVPlayer();
791            break;
792#endif
793        case SONIVOX_PLAYER:
794            LOGV(" create MidiFile");
795            p = new MidiFile();
796            break;
797        case VORBIS_PLAYER:
798            LOGV(" create VorbisPlayer");
799            p = new VorbisPlayer();
800            break;
801#if BUILD_WITH_FULL_STAGEFRIGHT
802        case STAGEFRIGHT_PLAYER:
803            LOGV(" create StagefrightPlayer");
804            p = new StagefrightPlayer;
805            break;
806#endif
807        case TEST_PLAYER:
808            LOGV("Create Test Player stub");
809            p = new TestPlayerStub();
810            break;
811    }
812    if (p != NULL) {
813        if (p->initCheck() == NO_ERROR) {
814            p->setNotifyCallback(cookie, notifyFunc);
815        } else {
816            p.clear();
817        }
818    }
819    if (p == NULL) {
820        LOGE("Failed to create player object");
821    }
822    return p;
823}
824
825sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
826{
827    // determine if we have the right player type
828    sp<MediaPlayerBase> p = mPlayer;
829    if ((p != NULL) && (p->playerType() != playerType)) {
830        LOGV("delete player");
831        p.clear();
832    }
833    if (p == NULL) {
834        p = android::createPlayer(playerType, this, notify);
835    }
836    return p;
837}
838
839status_t MediaPlayerService::Client::setDataSource(
840        const char *url, const KeyedVector<String8, String8> *headers)
841{
842    LOGV("setDataSource(%s)", url);
843    if (url == NULL)
844        return UNKNOWN_ERROR;
845
846    if (strncmp(url, "content://", 10) == 0) {
847        // get a filedescriptor for the content Uri and
848        // pass it to the setDataSource(fd) method
849
850        String16 url16(url);
851        int fd = android::openContentProviderFile(url16);
852        if (fd < 0)
853        {
854            LOGE("Couldn't open fd for %s", url);
855            return UNKNOWN_ERROR;
856        }
857        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
858        close(fd);
859        return mStatus;
860    } else {
861        player_type playerType = getPlayerType(url);
862        LOGV("player type = %d", playerType);
863
864        // create the right type of player
865        sp<MediaPlayerBase> p = createPlayer(playerType);
866        if (p == NULL) return NO_INIT;
867
868        if (!p->hardwareOutput()) {
869            mAudioOutput = new AudioOutput();
870            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
871        }
872
873        // now set data source
874        LOGV(" setDataSource");
875        mStatus = p->setDataSource(url, headers);
876        if (mStatus == NO_ERROR) {
877            mPlayer = p;
878        } else {
879            LOGE("  error: %d", mStatus);
880        }
881        return mStatus;
882    }
883}
884
885status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
886{
887    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
888    struct stat sb;
889    int ret = fstat(fd, &sb);
890    if (ret != 0) {
891        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
892        return UNKNOWN_ERROR;
893    }
894
895    LOGV("st_dev  = %llu", sb.st_dev);
896    LOGV("st_mode = %u", sb.st_mode);
897    LOGV("st_uid  = %lu", sb.st_uid);
898    LOGV("st_gid  = %lu", sb.st_gid);
899    LOGV("st_size = %llu", sb.st_size);
900
901    if (offset >= sb.st_size) {
902        LOGE("offset error");
903        ::close(fd);
904        return UNKNOWN_ERROR;
905    }
906    if (offset + length > sb.st_size) {
907        length = sb.st_size - offset;
908        LOGV("calculated length = %lld", length);
909    }
910
911    player_type playerType = getPlayerType(fd, offset, length);
912    LOGV("player type = %d", playerType);
913
914    // create the right type of player
915    sp<MediaPlayerBase> p = createPlayer(playerType);
916    if (p == NULL) return NO_INIT;
917
918    if (!p->hardwareOutput()) {
919        mAudioOutput = new AudioOutput();
920        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
921    }
922
923    // now set data source
924    mStatus = p->setDataSource(fd, offset, length);
925    if (mStatus == NO_ERROR) mPlayer = p;
926    return mStatus;
927}
928
929status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
930{
931    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
932    sp<MediaPlayerBase> p = getPlayer();
933    if (p == 0) return UNKNOWN_ERROR;
934    return p->setVideoSurface(surface);
935}
936
937status_t MediaPlayerService::Client::invoke(const Parcel& request,
938                                            Parcel *reply)
939{
940    sp<MediaPlayerBase> p = getPlayer();
941    if (p == NULL) return UNKNOWN_ERROR;
942    return p->invoke(request, reply);
943}
944
945// This call doesn't need to access the native player.
946status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
947{
948    status_t status;
949    media::Metadata::Filter allow, drop;
950
951    if (unmarshallFilter(filter, &allow, &status) &&
952        unmarshallFilter(filter, &drop, &status)) {
953        Mutex::Autolock lock(mLock);
954
955        mMetadataAllow = allow;
956        mMetadataDrop = drop;
957    }
958    return status;
959}
960
961status_t MediaPlayerService::Client::getMetadata(
962        bool update_only, bool apply_filter, Parcel *reply)
963{
964    sp<MediaPlayerBase> player = getPlayer();
965    if (player == 0) return UNKNOWN_ERROR;
966
967    status_t status;
968    // Placeholder for the return code, updated by the caller.
969    reply->writeInt32(-1);
970
971    media::Metadata::Filter ids;
972
973    // We don't block notifications while we fetch the data. We clear
974    // mMetadataUpdated first so we don't lose notifications happening
975    // during the rest of this call.
976    {
977        Mutex::Autolock lock(mLock);
978        if (update_only) {
979            ids = mMetadataUpdated;
980        }
981        mMetadataUpdated.clear();
982    }
983
984    media::Metadata metadata(reply);
985
986    metadata.appendHeader();
987    status = player->getMetadata(ids, reply);
988
989    if (status != OK) {
990        metadata.resetParcel();
991        LOGE("getMetadata failed %d", status);
992        return status;
993    }
994
995    // FIXME: Implement filtering on the result. Not critical since
996    // filtering takes place on the update notifications already. This
997    // would be when all the metadata are fetch and a filter is set.
998
999    // Everything is fine, update the metadata length.
1000    metadata.updateLength();
1001    return OK;
1002}
1003
1004status_t MediaPlayerService::Client::suspend() {
1005    sp<MediaPlayerBase> p = getPlayer();
1006    if (p == 0) return UNKNOWN_ERROR;
1007
1008    return p->suspend();
1009}
1010
1011status_t MediaPlayerService::Client::resume() {
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014
1015    return p->resume();
1016}
1017
1018status_t MediaPlayerService::Client::prepareAsync()
1019{
1020    LOGV("[%d] prepareAsync", mConnId);
1021    sp<MediaPlayerBase> p = getPlayer();
1022    if (p == 0) return UNKNOWN_ERROR;
1023    status_t ret = p->prepareAsync();
1024#if CALLBACK_ANTAGONIZER
1025    LOGD("start Antagonizer");
1026    if (ret == NO_ERROR) mAntagonizer->start();
1027#endif
1028    return ret;
1029}
1030
1031status_t MediaPlayerService::Client::start()
1032{
1033    LOGV("[%d] start", mConnId);
1034    sp<MediaPlayerBase> p = getPlayer();
1035    if (p == 0) return UNKNOWN_ERROR;
1036    p->setLooping(mLoop);
1037    return p->start();
1038}
1039
1040status_t MediaPlayerService::Client::stop()
1041{
1042    LOGV("[%d] stop", mConnId);
1043    sp<MediaPlayerBase> p = getPlayer();
1044    if (p == 0) return UNKNOWN_ERROR;
1045    return p->stop();
1046}
1047
1048status_t MediaPlayerService::Client::pause()
1049{
1050    LOGV("[%d] pause", mConnId);
1051    sp<MediaPlayerBase> p = getPlayer();
1052    if (p == 0) return UNKNOWN_ERROR;
1053    return p->pause();
1054}
1055
1056status_t MediaPlayerService::Client::isPlaying(bool* state)
1057{
1058    *state = false;
1059    sp<MediaPlayerBase> p = getPlayer();
1060    if (p == 0) return UNKNOWN_ERROR;
1061    *state = p->isPlaying();
1062    LOGV("[%d] isPlaying: %d", mConnId, *state);
1063    return NO_ERROR;
1064}
1065
1066status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1067{
1068    LOGV("getCurrentPosition");
1069    sp<MediaPlayerBase> p = getPlayer();
1070    if (p == 0) return UNKNOWN_ERROR;
1071    status_t ret = p->getCurrentPosition(msec);
1072    if (ret == NO_ERROR) {
1073        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1074    } else {
1075        LOGE("getCurrentPosition returned %d", ret);
1076    }
1077    return ret;
1078}
1079
1080status_t MediaPlayerService::Client::getDuration(int *msec)
1081{
1082    LOGV("getDuration");
1083    sp<MediaPlayerBase> p = getPlayer();
1084    if (p == 0) return UNKNOWN_ERROR;
1085    status_t ret = p->getDuration(msec);
1086    if (ret == NO_ERROR) {
1087        LOGV("[%d] getDuration = %d", mConnId, *msec);
1088    } else {
1089        LOGE("getDuration returned %d", ret);
1090    }
1091    return ret;
1092}
1093
1094status_t MediaPlayerService::Client::seekTo(int msec)
1095{
1096    LOGV("[%d] seekTo(%d)", mConnId, msec);
1097    sp<MediaPlayerBase> p = getPlayer();
1098    if (p == 0) return UNKNOWN_ERROR;
1099    return p->seekTo(msec);
1100}
1101
1102status_t MediaPlayerService::Client::reset()
1103{
1104    LOGV("[%d] reset", mConnId);
1105    sp<MediaPlayerBase> p = getPlayer();
1106    if (p == 0) return UNKNOWN_ERROR;
1107    return p->reset();
1108}
1109
1110status_t MediaPlayerService::Client::setAudioStreamType(int type)
1111{
1112    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1113    // TODO: for hardware output, call player instead
1114    Mutex::Autolock l(mLock);
1115    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1116    return NO_ERROR;
1117}
1118
1119status_t MediaPlayerService::Client::setLooping(int loop)
1120{
1121    LOGV("[%d] setLooping(%d)", mConnId, loop);
1122    mLoop = loop;
1123    sp<MediaPlayerBase> p = getPlayer();
1124    if (p != 0) return p->setLooping(loop);
1125    return NO_ERROR;
1126}
1127
1128status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1129{
1130    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1131    // TODO: for hardware output, call player instead
1132    Mutex::Autolock l(mLock);
1133    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1134    return NO_ERROR;
1135}
1136
1137
1138void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1139{
1140    Client* client = static_cast<Client*>(cookie);
1141
1142    if (MEDIA_INFO == msg &&
1143        MEDIA_INFO_METADATA_UPDATE == ext1) {
1144        const media::Metadata::Type metadata_type = ext2;
1145
1146        if(client->shouldDropMetadata(metadata_type)) {
1147            return;
1148        }
1149
1150        // Update the list of metadata that have changed. getMetadata
1151        // also access mMetadataUpdated and clears it.
1152        client->addNewMetadataUpdate(metadata_type);
1153    }
1154    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1155    client->mClient->notify(msg, ext1, ext2);
1156}
1157
1158
1159bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1160{
1161    Mutex::Autolock lock(mLock);
1162
1163    if (findMetadata(mMetadataDrop, code)) {
1164        return true;
1165    }
1166
1167    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1168        return false;
1169    } else {
1170        return true;
1171    }
1172}
1173
1174
1175void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1176    Mutex::Autolock lock(mLock);
1177    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1178        mMetadataUpdated.add(metadata_type);
1179    }
1180}
1181
1182#if CALLBACK_ANTAGONIZER
1183const int Antagonizer::interval = 10000; // 10 msecs
1184
1185Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1186    mExit(false), mActive(false), mClient(client), mCb(cb)
1187{
1188    createThread(callbackThread, this);
1189}
1190
1191void Antagonizer::kill()
1192{
1193    Mutex::Autolock _l(mLock);
1194    mActive = false;
1195    mExit = true;
1196    mCondition.wait(mLock);
1197}
1198
1199int Antagonizer::callbackThread(void* user)
1200{
1201    LOGD("Antagonizer started");
1202    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1203    while (!p->mExit) {
1204        if (p->mActive) {
1205            LOGV("send event");
1206            p->mCb(p->mClient, 0, 0, 0);
1207        }
1208        usleep(interval);
1209    }
1210    Mutex::Autolock _l(p->mLock);
1211    p->mCondition.signal();
1212    LOGD("Antagonizer stopped");
1213    return 0;
1214}
1215#endif
1216
1217static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1218
1219sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1220{
1221    LOGV("decode(%s)", url);
1222    sp<MemoryBase> mem;
1223    sp<MediaPlayerBase> player;
1224
1225    // Protect our precious, precious DRMd ringtones by only allowing
1226    // decoding of http, but not filesystem paths or content Uris.
1227    // If the application wants to decode those, it should open a
1228    // filedescriptor for them and use that.
1229    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1230        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1231        return mem;
1232    }
1233
1234    player_type playerType = getPlayerType(url);
1235    LOGV("player type = %d", playerType);
1236
1237    // create the right type of player
1238    sp<AudioCache> cache = new AudioCache(url);
1239    player = android::createPlayer(playerType, cache.get(), cache->notify);
1240    if (player == NULL) goto Exit;
1241    if (player->hardwareOutput()) goto Exit;
1242
1243    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1244
1245    // set data source
1246    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1247
1248    LOGV("prepare");
1249    player->prepareAsync();
1250
1251    LOGV("wait for prepare");
1252    if (cache->wait() != NO_ERROR) goto Exit;
1253
1254    LOGV("start");
1255    player->start();
1256
1257    LOGV("wait for playback complete");
1258    if (cache->wait() != NO_ERROR) goto Exit;
1259
1260    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1261    *pSampleRate = cache->sampleRate();
1262    *pNumChannels = cache->channelCount();
1263    *pFormat = cache->format();
1264    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1265
1266Exit:
1267    if (player != 0) player->reset();
1268    return mem;
1269}
1270
1271sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1272{
1273    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1274    sp<MemoryBase> mem;
1275    sp<MediaPlayerBase> player;
1276
1277    player_type playerType = getPlayerType(fd, offset, length);
1278    LOGV("player type = %d", playerType);
1279
1280    // create the right type of player
1281    sp<AudioCache> cache = new AudioCache("decode_fd");
1282    player = android::createPlayer(playerType, cache.get(), cache->notify);
1283    if (player == NULL) goto Exit;
1284    if (player->hardwareOutput()) goto Exit;
1285
1286    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1287
1288    // set data source
1289    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1290
1291    LOGV("prepare");
1292    player->prepareAsync();
1293
1294    LOGV("wait for prepare");
1295    if (cache->wait() != NO_ERROR) goto Exit;
1296
1297    LOGV("start");
1298    player->start();
1299
1300    LOGV("wait for playback complete");
1301    if (cache->wait() != NO_ERROR) goto Exit;
1302
1303    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1304    *pSampleRate = cache->sampleRate();
1305    *pNumChannels = cache->channelCount();
1306    *pFormat = cache->format();
1307    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1308
1309Exit:
1310    if (player != 0) player->reset();
1311    ::close(fd);
1312    return mem;
1313}
1314
1315/*
1316 * Avert your eyes, ugly hack ahead.
1317 * The following is to support music visualizations.
1318 */
1319
1320static const int NUMVIZBUF = 32;
1321static const int VIZBUFFRAMES = 1024;
1322static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1323static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1324
1325static bool gotMem = false;
1326static sp<MemoryHeapBase> heap;
1327static sp<MemoryBase> mem[NUMVIZBUF];
1328static uint64_t endTime;
1329static uint64_t lastReadTime;
1330static uint64_t lastWriteTime;
1331static int writeIdx = 0;
1332
1333static void allocVizBufs() {
1334    if (!gotMem) {
1335        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1336        for (int i=0;i<NUMVIZBUF;i++) {
1337            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1338        }
1339        endTime = 0;
1340        gotMem = true;
1341    }
1342}
1343
1344
1345/*
1346 * Get a buffer of audio data that is about to be played.
1347 * We don't synchronize this because in practice the writer
1348 * is ahead of the reader, and even if we did happen to catch
1349 * a buffer while it's being written, it's just a visualization,
1350 * so no harm done.
1351 */
1352static sp<MemoryBase> getVizBuffer() {
1353
1354    allocVizBufs();
1355
1356    lastReadTime = uptimeMillis();
1357
1358    // if there is no recent buffer (yet), just return empty handed
1359    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1360        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1361        return NULL;
1362    }
1363
1364    int timedelta = endTime - lastReadTime;
1365    if (timedelta < 0) timedelta = 0;
1366    int framedelta = timedelta * 44100 / 1000;
1367    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1368    while (headIdx < 0) {
1369        headIdx += NUMVIZBUF;
1370    }
1371    return mem[headIdx];
1372}
1373
1374// Append the data to the vizualization buffer
1375static void makeVizBuffers(const char *data, int len, uint64_t time) {
1376
1377    allocVizBufs();
1378
1379    uint64_t startTime = time;
1380    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1381    int offset = writeIdx;
1382    int maxoff = heap->getSize() / 2; // in shorts
1383    short *base = (short*)heap->getBase();
1384    short *src = (short*)data;
1385    while (len > 0) {
1386
1387        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1388        // This should still be good enough for a visualization
1389        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1390        src += 2;
1391        len -= frameSize;
1392        if (offset >= maxoff) {
1393            offset = 0;
1394        }
1395    }
1396    writeIdx = offset;
1397    endTime = time + (len / frameSize) / 44;
1398    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1399}
1400
1401sp<IMemory> MediaPlayerService::snoop()
1402{
1403    sp<MemoryBase> mem = getVizBuffer();
1404    return mem;
1405}
1406
1407
1408#undef LOG_TAG
1409#define LOG_TAG "AudioSink"
1410MediaPlayerService::AudioOutput::AudioOutput()
1411    : mCallback(NULL),
1412      mCallbackCookie(NULL) {
1413    mTrack = 0;
1414    mStreamType = AudioSystem::MUSIC;
1415    mLeftVolume = 1.0;
1416    mRightVolume = 1.0;
1417    mLatency = 0;
1418    mMsecsPerFrame = 0;
1419    mNumFramesWritten = 0;
1420    setMinBufferCount();
1421}
1422
1423MediaPlayerService::AudioOutput::~AudioOutput()
1424{
1425    close();
1426}
1427
1428void MediaPlayerService::AudioOutput::setMinBufferCount()
1429{
1430    char value[PROPERTY_VALUE_MAX];
1431    if (property_get("ro.kernel.qemu", value, 0)) {
1432        mIsOnEmulator = true;
1433        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1434    }
1435}
1436
1437bool MediaPlayerService::AudioOutput::isOnEmulator()
1438{
1439    setMinBufferCount();
1440    return mIsOnEmulator;
1441}
1442
1443int MediaPlayerService::AudioOutput::getMinBufferCount()
1444{
1445    setMinBufferCount();
1446    return mMinBufferCount;
1447}
1448
1449ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1450{
1451    if (mTrack == 0) return NO_INIT;
1452    return mTrack->frameCount() * frameSize();
1453}
1454
1455ssize_t MediaPlayerService::AudioOutput::frameCount() const
1456{
1457    if (mTrack == 0) return NO_INIT;
1458    return mTrack->frameCount();
1459}
1460
1461ssize_t MediaPlayerService::AudioOutput::channelCount() const
1462{
1463    if (mTrack == 0) return NO_INIT;
1464    return mTrack->channelCount();
1465}
1466
1467ssize_t MediaPlayerService::AudioOutput::frameSize() const
1468{
1469    if (mTrack == 0) return NO_INIT;
1470    return mTrack->frameSize();
1471}
1472
1473uint32_t MediaPlayerService::AudioOutput::latency () const
1474{
1475    return mLatency;
1476}
1477
1478float MediaPlayerService::AudioOutput::msecsPerFrame() const
1479{
1480    return mMsecsPerFrame;
1481}
1482
1483status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1484{
1485    if (mTrack == 0) return NO_INIT;
1486    return mTrack->getPosition(position);
1487}
1488
1489status_t MediaPlayerService::AudioOutput::open(
1490        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1491        AudioCallback cb, void *cookie)
1492{
1493    mCallback = cb;
1494    mCallbackCookie = cookie;
1495
1496    // Check argument "bufferCount" against the mininum buffer count
1497    if (bufferCount < mMinBufferCount) {
1498        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1499        bufferCount = mMinBufferCount;
1500
1501    }
1502    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1503    if (mTrack) close();
1504    int afSampleRate;
1505    int afFrameCount;
1506    int frameCount;
1507
1508    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1509        return NO_INIT;
1510    }
1511    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1512        return NO_INIT;
1513    }
1514
1515    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1516
1517    AudioTrack *t;
1518    if (mCallback != NULL) {
1519        t = new AudioTrack(
1520                mStreamType,
1521                sampleRate,
1522                format,
1523                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1524                frameCount,
1525                0 /* flags */,
1526                CallbackWrapper,
1527                this);
1528    } else {
1529        t = new AudioTrack(
1530                mStreamType,
1531                sampleRate,
1532                format,
1533                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1534                frameCount);
1535    }
1536
1537    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1538        LOGE("Unable to create audio track");
1539        delete t;
1540        return NO_INIT;
1541    }
1542
1543    LOGV("setVolume");
1544    t->setVolume(mLeftVolume, mRightVolume);
1545    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1546    mLatency = t->latency();
1547    mTrack = t;
1548    return NO_ERROR;
1549}
1550
1551void MediaPlayerService::AudioOutput::start()
1552{
1553    LOGV("start");
1554    if (mTrack) {
1555        mTrack->setVolume(mLeftVolume, mRightVolume);
1556        mTrack->start();
1557        mTrack->getPosition(&mNumFramesWritten);
1558    }
1559}
1560
1561void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1562    // Only make visualization buffers if anyone recently requested visualization data
1563    uint64_t now = uptimeMillis();
1564    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1565        // Based on the current play counter, the number of frames written and
1566        // the current real time we can calculate the approximate real start
1567        // time of the buffer we're about to write.
1568        uint32_t pos;
1569        mTrack->getPosition(&pos);
1570
1571        // we're writing ahead by this many frames:
1572        int ahead = mNumFramesWritten - pos;
1573        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1574        // which is this many milliseconds, assuming 44100 Hz:
1575        ahead /= 44;
1576
1577        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1578        lastWriteTime = now;
1579    }
1580}
1581
1582
1583ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1584{
1585    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1586
1587    //LOGV("write(%p, %u)", buffer, size);
1588    if (mTrack) {
1589        snoopWrite(buffer, size);
1590        ssize_t ret = mTrack->write(buffer, size);
1591        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1592        return ret;
1593    }
1594    return NO_INIT;
1595}
1596
1597void MediaPlayerService::AudioOutput::stop()
1598{
1599    LOGV("stop");
1600    if (mTrack) mTrack->stop();
1601    lastWriteTime = 0;
1602}
1603
1604void MediaPlayerService::AudioOutput::flush()
1605{
1606    LOGV("flush");
1607    if (mTrack) mTrack->flush();
1608}
1609
1610void MediaPlayerService::AudioOutput::pause()
1611{
1612    LOGV("pause");
1613    if (mTrack) mTrack->pause();
1614    lastWriteTime = 0;
1615}
1616
1617void MediaPlayerService::AudioOutput::close()
1618{
1619    LOGV("close");
1620    delete mTrack;
1621    mTrack = 0;
1622}
1623
1624void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1625{
1626    LOGV("setVolume(%f, %f)", left, right);
1627    mLeftVolume = left;
1628    mRightVolume = right;
1629    if (mTrack) {
1630        mTrack->setVolume(left, right);
1631    }
1632}
1633
1634// static
1635void MediaPlayerService::AudioOutput::CallbackWrapper(
1636        int event, void *cookie, void *info) {
1637    //LOGV("callbackwrapper");
1638    if (event != AudioTrack::EVENT_MORE_DATA) {
1639        return;
1640    }
1641
1642    AudioOutput *me = (AudioOutput *)cookie;
1643    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1644
1645    size_t actualSize = (*me->mCallback)(
1646            me, buffer->raw, buffer->size, me->mCallbackCookie);
1647
1648    buffer->size = actualSize;
1649
1650    if (actualSize > 0) {
1651        me->snoopWrite(buffer->raw, actualSize);
1652    }
1653}
1654
1655#undef LOG_TAG
1656#define LOG_TAG "AudioCache"
1657MediaPlayerService::AudioCache::AudioCache(const char* name) :
1658    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1659    mError(NO_ERROR), mCommandComplete(false)
1660{
1661    // create ashmem heap
1662    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1663}
1664
1665uint32_t MediaPlayerService::AudioCache::latency () const
1666{
1667    return 0;
1668}
1669
1670float MediaPlayerService::AudioCache::msecsPerFrame() const
1671{
1672    return mMsecsPerFrame;
1673}
1674
1675status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1676{
1677    if (position == 0) return BAD_VALUE;
1678    *position = mSize;
1679    return NO_ERROR;
1680}
1681
1682////////////////////////////////////////////////////////////////////////////////
1683
1684struct CallbackThread : public Thread {
1685    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1686                   MediaPlayerBase::AudioSink::AudioCallback cb,
1687                   void *cookie);
1688
1689protected:
1690    virtual ~CallbackThread();
1691
1692    virtual bool threadLoop();
1693
1694private:
1695    wp<MediaPlayerBase::AudioSink> mSink;
1696    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1697    void *mCookie;
1698    void *mBuffer;
1699    size_t mBufferSize;
1700
1701    CallbackThread(const CallbackThread &);
1702    CallbackThread &operator=(const CallbackThread &);
1703};
1704
1705CallbackThread::CallbackThread(
1706        const wp<MediaPlayerBase::AudioSink> &sink,
1707        MediaPlayerBase::AudioSink::AudioCallback cb,
1708        void *cookie)
1709    : mSink(sink),
1710      mCallback(cb),
1711      mCookie(cookie),
1712      mBuffer(NULL),
1713      mBufferSize(0) {
1714}
1715
1716CallbackThread::~CallbackThread() {
1717    if (mBuffer) {
1718        free(mBuffer);
1719        mBuffer = NULL;
1720    }
1721}
1722
1723bool CallbackThread::threadLoop() {
1724    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1725    if (sink == NULL) {
1726        return false;
1727    }
1728
1729    if (mBuffer == NULL) {
1730        mBufferSize = sink->bufferSize();
1731        mBuffer = malloc(mBufferSize);
1732    }
1733
1734    size_t actualSize =
1735        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1736
1737    if (actualSize > 0) {
1738        sink->write(mBuffer, actualSize);
1739    }
1740
1741    return true;
1742}
1743
1744////////////////////////////////////////////////////////////////////////////////
1745
1746status_t MediaPlayerService::AudioCache::open(
1747        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1748        AudioCallback cb, void *cookie)
1749{
1750    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1751    if (mHeap->getHeapID() < 0) {
1752        return NO_INIT;
1753    }
1754
1755    mSampleRate = sampleRate;
1756    mChannelCount = (uint16_t)channelCount;
1757    mFormat = (uint16_t)format;
1758    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1759
1760    if (cb != NULL) {
1761        mCallbackThread = new CallbackThread(this, cb, cookie);
1762    }
1763    return NO_ERROR;
1764}
1765
1766void MediaPlayerService::AudioCache::start() {
1767    if (mCallbackThread != NULL) {
1768        mCallbackThread->run("AudioCache callback");
1769    }
1770}
1771
1772void MediaPlayerService::AudioCache::stop() {
1773    if (mCallbackThread != NULL) {
1774        mCallbackThread->requestExitAndWait();
1775    }
1776}
1777
1778ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1779{
1780    LOGV("write(%p, %u)", buffer, size);
1781    if ((buffer == 0) || (size == 0)) return size;
1782
1783    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1784    if (p == NULL) return NO_INIT;
1785    p += mSize;
1786    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1787    if (mSize + size > mHeap->getSize()) {
1788        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1789        size = mHeap->getSize() - mSize;
1790    }
1791    memcpy(p, buffer, size);
1792    mSize += size;
1793    return size;
1794}
1795
1796// call with lock held
1797status_t MediaPlayerService::AudioCache::wait()
1798{
1799    Mutex::Autolock lock(mLock);
1800    while (!mCommandComplete) {
1801        mSignal.wait(mLock);
1802    }
1803    mCommandComplete = false;
1804
1805    if (mError == NO_ERROR) {
1806        LOGV("wait - success");
1807    } else {
1808        LOGV("wait - error");
1809    }
1810    return mError;
1811}
1812
1813void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1814{
1815    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1816    AudioCache* p = static_cast<AudioCache*>(cookie);
1817
1818    // ignore buffering messages
1819    switch (msg)
1820    {
1821    case MEDIA_ERROR:
1822        LOGE("Error %d, %d occurred", ext1, ext2);
1823        p->mError = ext1;
1824        break;
1825    case MEDIA_PREPARED:
1826        LOGV("prepared");
1827        break;
1828    case MEDIA_PLAYBACK_COMPLETE:
1829        LOGV("playback complete");
1830        break;
1831    default:
1832        LOGV("ignored");
1833        return;
1834    }
1835
1836    // wake up thread
1837    Mutex::Autolock lock(p->mLock);
1838    p->mCommandComplete = true;
1839    p->mSignal.signal();
1840}
1841
1842} // namespace android
1843