MediaPlayerService.cpp revision 2db8455d8f4468a637109d31f319ce02d9d743ec 
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#ifndef NO_OPENCORE
232    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
233    wp<MediaRecorderClient> w = recorder;
234    Mutex::Autolock lock(mLock);
235    mMediaRecorderClients.add(w);
236#else
237    sp<MediaRecorderClient> recorder = NULL;
238#endif
239    LOGV("Create new media recorder client from pid %d", pid);
240    return recorder;
241}
242
243void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
244{
245    Mutex::Autolock lock(mLock);
246    mMediaRecorderClients.remove(client);
247    LOGV("Delete media recorder client");
248}
249
250sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
251{
252    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
253    LOGV("Create new media retriever from pid %d", pid);
254    return retriever;
255}
256
257sp<IMediaPlayer> MediaPlayerService::create(
258        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
259        const KeyedVector<String8, String8> *headers)
260{
261    int32_t connId = android_atomic_inc(&mNextConnId);
262    sp<Client> c = new Client(this, pid, connId, client);
263    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
264    if (NO_ERROR != c->setDataSource(url, headers))
265    {
266        c.clear();
267        return c;
268    }
269    wp<Client> w = c;
270    Mutex::Autolock lock(mLock);
271    mClients.add(w);
272    return c;
273}
274
275sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
276        int fd, int64_t offset, int64_t length)
277{
278    int32_t connId = android_atomic_inc(&mNextConnId);
279    sp<Client> c = new Client(this, pid, connId, client);
280    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
281            connId, pid, fd, offset, length);
282    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
283        c.clear();
284    } else {
285        wp<Client> w = c;
286        Mutex::Autolock lock(mLock);
287        mClients.add(w);
288    }
289    ::close(fd);
290    return c;
291}
292
293sp<IOMX> MediaPlayerService::getOMX() {
294    Mutex::Autolock autoLock(mLock);
295
296    if (mOMX.get() == NULL) {
297        mOMX = new OMX;
298    }
299
300    return mOMX;
301}
302
303status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
304{
305    const size_t SIZE = 256;
306    char buffer[SIZE];
307    String8 result;
308
309    result.append(" AudioCache\n");
310    if (mHeap != 0) {
311        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
312                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
313        result.append(buffer);
314    }
315    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
316            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
317    result.append(buffer);
318    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
319            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
320    result.append(buffer);
321    ::write(fd, result.string(), result.size());
322    return NO_ERROR;
323}
324
325status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
326{
327    const size_t SIZE = 256;
328    char buffer[SIZE];
329    String8 result;
330
331    result.append(" AudioOutput\n");
332    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
333            mStreamType, mLeftVolume, mRightVolume);
334    result.append(buffer);
335    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
336            mMsecsPerFrame, mLatency);
337    result.append(buffer);
338    ::write(fd, result.string(), result.size());
339    if (mTrack != 0) {
340        mTrack->dump(fd, args);
341    }
342    return NO_ERROR;
343}
344
345status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
346{
347    const size_t SIZE = 256;
348    char buffer[SIZE];
349    String8 result;
350    result.append(" Client\n");
351    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
352            mPid, mConnId, mStatus, mLoop?"true": "false");
353    result.append(buffer);
354    write(fd, result.string(), result.size());
355    if (mAudioOutput != 0) {
356        mAudioOutput->dump(fd, args);
357    }
358    write(fd, "\n", 1);
359    return NO_ERROR;
360}
361
362static int myTid() {
363#ifdef HAVE_GETTID
364    return gettid();
365#else
366    return getpid();
367#endif
368}
369
370#if defined(__arm__)
371extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
372        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
373extern "C" void free_malloc_leak_info(uint8_t* info);
374
375// Use the String-class below instead of String8 to allocate all memory
376// beforehand and not reenter the heap while we are examining it...
377struct MyString8 {
378    static const size_t MAX_SIZE = 256 * 1024;
379
380    MyString8()
381        : mPtr((char *)malloc(MAX_SIZE)) {
382        *mPtr = '\0';
383    }
384
385    ~MyString8() {
386        free(mPtr);
387    }
388
389    void append(const char *s) {
390        strcat(mPtr, s);
391    }
392
393    const char *string() const {
394        return mPtr;
395    }
396
397    size_t size() const {
398        return strlen(mPtr);
399    }
400
401private:
402    char *mPtr;
403
404    MyString8(const MyString8 &);
405    MyString8 &operator=(const MyString8 &);
406};
407
408void memStatus(int fd, const Vector<String16>& args)
409{
410    const size_t SIZE = 256;
411    char buffer[SIZE];
412    MyString8 result;
413
414    typedef struct {
415        size_t size;
416        size_t dups;
417        intptr_t * backtrace;
418    } AllocEntry;
419
420    uint8_t *info = NULL;
421    size_t overallSize = 0;
422    size_t infoSize = 0;
423    size_t totalMemory = 0;
424    size_t backtraceSize = 0;
425
426    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
427    if (info) {
428        uint8_t *ptr = info;
429        size_t count = overallSize / infoSize;
430
431        snprintf(buffer, SIZE, " Allocation count %i\n", count);
432        result.append(buffer);
433
434        AllocEntry * entries = new AllocEntry[count];
435
436        for (size_t i = 0; i < count; i++) {
437            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
438            AllocEntry *e = &entries[i];
439
440            e->size = *reinterpret_cast<size_t *>(ptr);
441            ptr += sizeof(size_t);
442
443            e->dups = *reinterpret_cast<size_t *>(ptr);
444            ptr += sizeof(size_t);
445
446            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
447            ptr += sizeof(intptr_t) * backtraceSize;
448        }
449
450        // Now we need to sort the entries.  They come sorted by size but
451        // not by stack trace which causes problems using diff.
452        bool moved;
453        do {
454            moved = false;
455            for (size_t i = 0; i < (count - 1); i++) {
456                AllocEntry *e1 = &entries[i];
457                AllocEntry *e2 = &entries[i+1];
458
459                bool swap = e1->size < e2->size;
460                if (e1->size == e2->size) {
461                    for(size_t j = 0; j < backtraceSize; j++) {
462                        if (e1->backtrace[j] == e2->backtrace[j]) {
463                            continue;
464                        }
465                        swap = e1->backtrace[j] < e2->backtrace[j];
466                        break;
467                    }
468                }
469                if (swap) {
470                    AllocEntry t = entries[i];
471                    entries[i] = entries[i+1];
472                    entries[i+1] = t;
473                    moved = true;
474                }
475            }
476        } while (moved);
477
478        for (size_t i = 0; i < count; i++) {
479            AllocEntry *e = &entries[i];
480
481            snprintf(buffer, SIZE, "size %8i, dup %4i", e->size, e->dups);
482            result.append(buffer);
483            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
484                if (ct) {
485                    result.append(", ");
486                }
487                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
488                result.append(buffer);
489            }
490            result.append("\n");
491        }
492
493        delete[] entries;
494        free_malloc_leak_info(info);
495    }
496
497    write(fd, result.string(), result.size());
498}
499#endif
500
501status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
502{
503    const size_t SIZE = 256;
504    char buffer[SIZE];
505    String8 result;
506    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
507        snprintf(buffer, SIZE, "Permission Denial: "
508                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
509                IPCThreadState::self()->getCallingPid(),
510                IPCThreadState::self()->getCallingUid());
511        result.append(buffer);
512    } else {
513        Mutex::Autolock lock(mLock);
514        for (int i = 0, n = mClients.size(); i < n; ++i) {
515            sp<Client> c = mClients[i].promote();
516            if (c != 0) c->dump(fd, args);
517        }
518        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
519            result.append(" MediaRecorderClient\n");
520            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
521            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
522            result.append(buffer);
523        }
524
525        result.append(" Files opened and/or mapped:\n");
526        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
527        FILE *f = fopen(buffer, "r");
528        if (f) {
529            while (!feof(f)) {
530                fgets(buffer, SIZE, f);
531                if (strstr(buffer, " /sdcard/") ||
532                    strstr(buffer, " /system/sounds/") ||
533                    strstr(buffer, " /system/media/")) {
534                    result.append("  ");
535                    result.append(buffer);
536                }
537            }
538            fclose(f);
539        } else {
540            result.append("couldn't open ");
541            result.append(buffer);
542            result.append("\n");
543        }
544
545        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
546        DIR *d = opendir(buffer);
547        if (d) {
548            struct dirent *ent;
549            while((ent = readdir(d)) != NULL) {
550                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
551                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
552                    struct stat s;
553                    if (lstat(buffer, &s) == 0) {
554                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
555                            char linkto[256];
556                            int len = readlink(buffer, linkto, sizeof(linkto));
557                            if(len > 0) {
558                                if(len > 255) {
559                                    linkto[252] = '.';
560                                    linkto[253] = '.';
561                                    linkto[254] = '.';
562                                    linkto[255] = 0;
563                                } else {
564                                    linkto[len] = 0;
565                                }
566                                if (strstr(linkto, "/sdcard/") == linkto ||
567                                    strstr(linkto, "/system/sounds/") == linkto ||
568                                    strstr(linkto, "/system/media/") == linkto) {
569                                    result.append("  ");
570                                    result.append(buffer);
571                                    result.append(" -> ");
572                                    result.append(linkto);
573                                    result.append("\n");
574                                }
575                            }
576                        } else {
577                            result.append("  unexpected type for ");
578                            result.append(buffer);
579                            result.append("\n");
580                        }
581                    }
582                }
583            }
584            closedir(d);
585        } else {
586            result.append("couldn't open ");
587            result.append(buffer);
588            result.append("\n");
589        }
590
591#if defined(__arm__)
592        bool dumpMem = false;
593        for (size_t i = 0; i < args.size(); i++) {
594            if (args[i] == String16("-m")) {
595                dumpMem = true;
596            }
597        }
598        if (dumpMem) {
599            memStatus(fd, args);
600        }
601#endif
602    }
603    write(fd, result.string(), result.size());
604    return NO_ERROR;
605}
606
607void MediaPlayerService::removeClient(wp<Client> client)
608{
609    Mutex::Autolock lock(mLock);
610    mClients.remove(client);
611}
612
613MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
614        int32_t connId, const sp<IMediaPlayerClient>& client)
615{
616    LOGV("Client(%d) constructor", connId);
617    mPid = pid;
618    mConnId = connId;
619    mService = service;
620    mClient = client;
621    mLoop = false;
622    mStatus = NO_INIT;
623#if CALLBACK_ANTAGONIZER
624    LOGD("create Antagonizer");
625    mAntagonizer = new Antagonizer(notify, this);
626#endif
627}
628
629MediaPlayerService::Client::~Client()
630{
631    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
632    mAudioOutput.clear();
633    wp<Client> client(this);
634    disconnect();
635    mService->removeClient(client);
636}
637
638void MediaPlayerService::Client::disconnect()
639{
640    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
641    // grab local reference and clear main reference to prevent future
642    // access to object
643    sp<MediaPlayerBase> p;
644    {
645        Mutex::Autolock l(mLock);
646        p = mPlayer;
647    }
648    mClient.clear();
649
650    mPlayer.clear();
651
652    // clear the notification to prevent callbacks to dead client
653    // and reset the player. We assume the player will serialize
654    // access to itself if necessary.
655    if (p != 0) {
656        p->setNotifyCallback(0, 0);
657#if CALLBACK_ANTAGONIZER
658        LOGD("kill Antagonizer");
659        mAntagonizer->kill();
660#endif
661        p->reset();
662    }
663
664    IPCThreadState::self()->flushCommands();
665}
666
667static player_type getDefaultPlayerType() {
668#if BUILD_WITH_FULL_STAGEFRIGHT
669    char value[PROPERTY_VALUE_MAX];
670    if (property_get("media.stagefright.enable-player", value, NULL)
671        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
672        return STAGEFRIGHT_PLAYER;
673    }
674#endif
675
676    return PV_PLAYER;
677}
678
679player_type getPlayerType(int fd, int64_t offset, int64_t length)
680{
681    char buf[20];
682    lseek(fd, offset, SEEK_SET);
683    read(fd, buf, sizeof(buf));
684    lseek(fd, offset, SEEK_SET);
685
686    long ident = *((long*)buf);
687
688    // Ogg vorbis?
689    if (ident == 0x5367674f) // 'OggS'
690        return VORBIS_PLAYER;
691
692#ifndef NO_OPENCORE
693    if (ident == 0x75b22630) {
694        // The magic number for .asf files, i.e. wmv and wma content.
695        // These are not currently supported through stagefright.
696        return PV_PLAYER;
697    }
698#endif
699
700    // Some kind of MIDI?
701    EAS_DATA_HANDLE easdata;
702    if (EAS_Init(&easdata) == EAS_SUCCESS) {
703        EAS_FILE locator;
704        locator.path = NULL;
705        locator.fd = fd;
706        locator.offset = offset;
707        locator.length = length;
708        EAS_HANDLE  eashandle;
709        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
710            EAS_CloseFile(easdata, eashandle);
711            EAS_Shutdown(easdata);
712            return SONIVOX_PLAYER;
713        }
714        EAS_Shutdown(easdata);
715    }
716
717    return getDefaultPlayerType();
718}
719
720player_type getPlayerType(const char* url)
721{
722    if (TestPlayerStub::canBeUsed(url)) {
723        return TEST_PLAYER;
724    }
725
726    // use MidiFile for MIDI extensions
727    int lenURL = strlen(url);
728    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
729        int len = strlen(FILE_EXTS[i].extension);
730        int start = lenURL - len;
731        if (start > 0) {
732            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
733                return FILE_EXTS[i].playertype;
734            }
735        }
736    }
737
738    if (!strncasecmp(url, "http://", 7)) {
739        char value[PROPERTY_VALUE_MAX];
740        if (!property_get("media.stagefright.enable-http", value, NULL)
741            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
742            // For now, we're going to use PV for http-based playback
743            // by default until we can clear up a few more issues.
744            return PV_PLAYER;
745        }
746    }
747
748    return getDefaultPlayerType();
749}
750
751static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
752        notify_callback_f notifyFunc)
753{
754    sp<MediaPlayerBase> p;
755    switch (playerType) {
756#ifndef NO_OPENCORE
757        case PV_PLAYER:
758            LOGV(" create PVPlayer");
759            p = new PVPlayer();
760            break;
761#endif
762        case SONIVOX_PLAYER:
763            LOGV(" create MidiFile");
764            p = new MidiFile();
765            break;
766        case VORBIS_PLAYER:
767            LOGV(" create VorbisPlayer");
768            p = new VorbisPlayer();
769            break;
770#if BUILD_WITH_FULL_STAGEFRIGHT
771        case STAGEFRIGHT_PLAYER:
772            LOGV(" create StagefrightPlayer");
773            p = new StagefrightPlayer;
774            break;
775#endif
776        case TEST_PLAYER:
777            LOGV("Create Test Player stub");
778            p = new TestPlayerStub();
779            break;
780    }
781    if (p != NULL) {
782        if (p->initCheck() == NO_ERROR) {
783            p->setNotifyCallback(cookie, notifyFunc);
784        } else {
785            p.clear();
786        }
787    }
788    if (p == NULL) {
789        LOGE("Failed to create player object");
790    }
791    return p;
792}
793
794sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
795{
796    // determine if we have the right player type
797    sp<MediaPlayerBase> p = mPlayer;
798    if ((p != NULL) && (p->playerType() != playerType)) {
799        LOGV("delete player");
800        p.clear();
801    }
802    if (p == NULL) {
803        p = android::createPlayer(playerType, this, notify);
804    }
805    return p;
806}
807
808status_t MediaPlayerService::Client::setDataSource(
809        const char *url, const KeyedVector<String8, String8> *headers)
810{
811    LOGV("setDataSource(%s)", url);
812    if (url == NULL)
813        return UNKNOWN_ERROR;
814
815    if (strncmp(url, "content://", 10) == 0) {
816        // get a filedescriptor for the content Uri and
817        // pass it to the setDataSource(fd) method
818
819        String16 url16(url);
820        int fd = android::openContentProviderFile(url16);
821        if (fd < 0)
822        {
823            LOGE("Couldn't open fd for %s", url);
824            return UNKNOWN_ERROR;
825        }
826        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
827        close(fd);
828        return mStatus;
829    } else {
830        player_type playerType = getPlayerType(url);
831        LOGV("player type = %d", playerType);
832
833        // create the right type of player
834        sp<MediaPlayerBase> p = createPlayer(playerType);
835        if (p == NULL) return NO_INIT;
836
837        if (!p->hardwareOutput()) {
838            mAudioOutput = new AudioOutput();
839            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
840        }
841
842        // now set data source
843        LOGV(" setDataSource");
844        mStatus = p->setDataSource(url, headers);
845        if (mStatus == NO_ERROR) {
846            mPlayer = p;
847        } else {
848            LOGE("  error: %d", mStatus);
849        }
850        return mStatus;
851    }
852}
853
854status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
855{
856    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
857    struct stat sb;
858    int ret = fstat(fd, &sb);
859    if (ret != 0) {
860        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
861        return UNKNOWN_ERROR;
862    }
863
864    LOGV("st_dev  = %llu", sb.st_dev);
865    LOGV("st_mode = %u", sb.st_mode);
866    LOGV("st_uid  = %lu", sb.st_uid);
867    LOGV("st_gid  = %lu", sb.st_gid);
868    LOGV("st_size = %llu", sb.st_size);
869
870    if (offset >= sb.st_size) {
871        LOGE("offset error");
872        ::close(fd);
873        return UNKNOWN_ERROR;
874    }
875    if (offset + length > sb.st_size) {
876        length = sb.st_size - offset;
877        LOGV("calculated length = %lld", length);
878    }
879
880    player_type playerType = getPlayerType(fd, offset, length);
881    LOGV("player type = %d", playerType);
882
883    // create the right type of player
884    sp<MediaPlayerBase> p = createPlayer(playerType);
885    if (p == NULL) return NO_INIT;
886
887    if (!p->hardwareOutput()) {
888        mAudioOutput = new AudioOutput();
889        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
890    }
891
892    // now set data source
893    mStatus = p->setDataSource(fd, offset, length);
894    if (mStatus == NO_ERROR) mPlayer = p;
895    return mStatus;
896}
897
898status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
899{
900    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
901    sp<MediaPlayerBase> p = getPlayer();
902    if (p == 0) return UNKNOWN_ERROR;
903    return p->setVideoSurface(surface);
904}
905
906status_t MediaPlayerService::Client::invoke(const Parcel& request,
907                                            Parcel *reply)
908{
909    sp<MediaPlayerBase> p = getPlayer();
910    if (p == NULL) return UNKNOWN_ERROR;
911    return p->invoke(request, reply);
912}
913
914// This call doesn't need to access the native player.
915status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
916{
917    status_t status;
918    media::Metadata::Filter allow, drop;
919
920    if (unmarshallFilter(filter, &allow, &status) &&
921        unmarshallFilter(filter, &drop, &status)) {
922        Mutex::Autolock lock(mLock);
923
924        mMetadataAllow = allow;
925        mMetadataDrop = drop;
926    }
927    return status;
928}
929
930status_t MediaPlayerService::Client::getMetadata(
931        bool update_only, bool apply_filter, Parcel *reply)
932{
933    sp<MediaPlayerBase> player = getPlayer();
934    if (player == 0) return UNKNOWN_ERROR;
935
936    status_t status;
937    // Placeholder for the return code, updated by the caller.
938    reply->writeInt32(-1);
939
940    media::Metadata::Filter ids;
941
942    // We don't block notifications while we fetch the data. We clear
943    // mMetadataUpdated first so we don't lose notifications happening
944    // during the rest of this call.
945    {
946        Mutex::Autolock lock(mLock);
947        if (update_only) {
948            ids = mMetadataUpdated;
949        }
950        mMetadataUpdated.clear();
951    }
952
953    media::Metadata metadata(reply);
954
955    metadata.appendHeader();
956    status = player->getMetadata(ids, reply);
957
958    if (status != OK) {
959        metadata.resetParcel();
960        LOGE("getMetadata failed %d", status);
961        return status;
962    }
963
964    // FIXME: Implement filtering on the result. Not critical since
965    // filtering takes place on the update notifications already. This
966    // would be when all the metadata are fetch and a filter is set.
967
968    // Everything is fine, update the metadata length.
969    metadata.updateLength();
970    return OK;
971}
972
973status_t MediaPlayerService::Client::prepareAsync()
974{
975    LOGV("[%d] prepareAsync", mConnId);
976    sp<MediaPlayerBase> p = getPlayer();
977    if (p == 0) return UNKNOWN_ERROR;
978    status_t ret = p->prepareAsync();
979#if CALLBACK_ANTAGONIZER
980    LOGD("start Antagonizer");
981    if (ret == NO_ERROR) mAntagonizer->start();
982#endif
983    return ret;
984}
985
986status_t MediaPlayerService::Client::start()
987{
988    LOGV("[%d] start", mConnId);
989    sp<MediaPlayerBase> p = getPlayer();
990    if (p == 0) return UNKNOWN_ERROR;
991    p->setLooping(mLoop);
992    return p->start();
993}
994
995status_t MediaPlayerService::Client::stop()
996{
997    LOGV("[%d] stop", mConnId);
998    sp<MediaPlayerBase> p = getPlayer();
999    if (p == 0) return UNKNOWN_ERROR;
1000    return p->stop();
1001}
1002
1003status_t MediaPlayerService::Client::pause()
1004{
1005    LOGV("[%d] pause", mConnId);
1006    sp<MediaPlayerBase> p = getPlayer();
1007    if (p == 0) return UNKNOWN_ERROR;
1008    return p->pause();
1009}
1010
1011status_t MediaPlayerService::Client::isPlaying(bool* state)
1012{
1013    *state = false;
1014    sp<MediaPlayerBase> p = getPlayer();
1015    if (p == 0) return UNKNOWN_ERROR;
1016    *state = p->isPlaying();
1017    LOGV("[%d] isPlaying: %d", mConnId, *state);
1018    return NO_ERROR;
1019}
1020
1021status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1022{
1023    LOGV("getCurrentPosition");
1024    sp<MediaPlayerBase> p = getPlayer();
1025    if (p == 0) return UNKNOWN_ERROR;
1026    status_t ret = p->getCurrentPosition(msec);
1027    if (ret == NO_ERROR) {
1028        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1029    } else {
1030        LOGE("getCurrentPosition returned %d", ret);
1031    }
1032    return ret;
1033}
1034
1035status_t MediaPlayerService::Client::getDuration(int *msec)
1036{
1037    LOGV("getDuration");
1038    sp<MediaPlayerBase> p = getPlayer();
1039    if (p == 0) return UNKNOWN_ERROR;
1040    status_t ret = p->getDuration(msec);
1041    if (ret == NO_ERROR) {
1042        LOGV("[%d] getDuration = %d", mConnId, *msec);
1043    } else {
1044        LOGE("getDuration returned %d", ret);
1045    }
1046    return ret;
1047}
1048
1049status_t MediaPlayerService::Client::seekTo(int msec)
1050{
1051    LOGV("[%d] seekTo(%d)", mConnId, msec);
1052    sp<MediaPlayerBase> p = getPlayer();
1053    if (p == 0) return UNKNOWN_ERROR;
1054    return p->seekTo(msec);
1055}
1056
1057status_t MediaPlayerService::Client::reset()
1058{
1059    LOGV("[%d] reset", mConnId);
1060    sp<MediaPlayerBase> p = getPlayer();
1061    if (p == 0) return UNKNOWN_ERROR;
1062    return p->reset();
1063}
1064
1065status_t MediaPlayerService::Client::setAudioStreamType(int type)
1066{
1067    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1068    // TODO: for hardware output, call player instead
1069    Mutex::Autolock l(mLock);
1070    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1071    return NO_ERROR;
1072}
1073
1074status_t MediaPlayerService::Client::setLooping(int loop)
1075{
1076    LOGV("[%d] setLooping(%d)", mConnId, loop);
1077    mLoop = loop;
1078    sp<MediaPlayerBase> p = getPlayer();
1079    if (p != 0) return p->setLooping(loop);
1080    return NO_ERROR;
1081}
1082
1083status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1084{
1085    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1086    // TODO: for hardware output, call player instead
1087    Mutex::Autolock l(mLock);
1088    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1089    return NO_ERROR;
1090}
1091
1092
1093void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1094{
1095    Client* client = static_cast<Client*>(cookie);
1096
1097    if (MEDIA_INFO == msg &&
1098        MEDIA_INFO_METADATA_UPDATE == ext1) {
1099        const media::Metadata::Type metadata_type = ext2;
1100
1101        if(client->shouldDropMetadata(metadata_type)) {
1102            return;
1103        }
1104
1105        // Update the list of metadata that have changed. getMetadata
1106        // also access mMetadataUpdated and clears it.
1107        client->addNewMetadataUpdate(metadata_type);
1108    }
1109    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1110    client->mClient->notify(msg, ext1, ext2);
1111}
1112
1113
1114bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1115{
1116    Mutex::Autolock lock(mLock);
1117
1118    if (findMetadata(mMetadataDrop, code)) {
1119        return true;
1120    }
1121
1122    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1123        return false;
1124    } else {
1125        return true;
1126    }
1127}
1128
1129
1130void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1131    Mutex::Autolock lock(mLock);
1132    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1133        mMetadataUpdated.add(metadata_type);
1134    }
1135}
1136
1137#if CALLBACK_ANTAGONIZER
1138const int Antagonizer::interval = 10000; // 10 msecs
1139
1140Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1141    mExit(false), mActive(false), mClient(client), mCb(cb)
1142{
1143    createThread(callbackThread, this);
1144}
1145
1146void Antagonizer::kill()
1147{
1148    Mutex::Autolock _l(mLock);
1149    mActive = false;
1150    mExit = true;
1151    mCondition.wait(mLock);
1152}
1153
1154int Antagonizer::callbackThread(void* user)
1155{
1156    LOGD("Antagonizer started");
1157    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1158    while (!p->mExit) {
1159        if (p->mActive) {
1160            LOGV("send event");
1161            p->mCb(p->mClient, 0, 0, 0);
1162        }
1163        usleep(interval);
1164    }
1165    Mutex::Autolock _l(p->mLock);
1166    p->mCondition.signal();
1167    LOGD("Antagonizer stopped");
1168    return 0;
1169}
1170#endif
1171
1172static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1173
1174sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1175{
1176    LOGV("decode(%s)", url);
1177    sp<MemoryBase> mem;
1178    sp<MediaPlayerBase> player;
1179
1180    // Protect our precious, precious DRMd ringtones by only allowing
1181    // decoding of http, but not filesystem paths or content Uris.
1182    // If the application wants to decode those, it should open a
1183    // filedescriptor for them and use that.
1184    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1185        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1186        return mem;
1187    }
1188
1189    player_type playerType = getPlayerType(url);
1190    LOGV("player type = %d", playerType);
1191
1192    // create the right type of player
1193    sp<AudioCache> cache = new AudioCache(url);
1194    player = android::createPlayer(playerType, cache.get(), cache->notify);
1195    if (player == NULL) goto Exit;
1196    if (player->hardwareOutput()) goto Exit;
1197
1198    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1199
1200    // set data source
1201    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1202
1203    LOGV("prepare");
1204    player->prepareAsync();
1205
1206    LOGV("wait for prepare");
1207    if (cache->wait() != NO_ERROR) goto Exit;
1208
1209    LOGV("start");
1210    player->start();
1211
1212    LOGV("wait for playback complete");
1213    if (cache->wait() != NO_ERROR) goto Exit;
1214
1215    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1216    *pSampleRate = cache->sampleRate();
1217    *pNumChannels = cache->channelCount();
1218    *pFormat = cache->format();
1219    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1220
1221Exit:
1222    if (player != 0) player->reset();
1223    return mem;
1224}
1225
1226sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1227{
1228    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1229    sp<MemoryBase> mem;
1230    sp<MediaPlayerBase> player;
1231
1232    player_type playerType = getPlayerType(fd, offset, length);
1233    LOGV("player type = %d", playerType);
1234
1235    // create the right type of player
1236    sp<AudioCache> cache = new AudioCache("decode_fd");
1237    player = android::createPlayer(playerType, cache.get(), cache->notify);
1238    if (player == NULL) goto Exit;
1239    if (player->hardwareOutput()) goto Exit;
1240
1241    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1242
1243    // set data source
1244    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1245
1246    LOGV("prepare");
1247    player->prepareAsync();
1248
1249    LOGV("wait for prepare");
1250    if (cache->wait() != NO_ERROR) goto Exit;
1251
1252    LOGV("start");
1253    player->start();
1254
1255    LOGV("wait for playback complete");
1256    if (cache->wait() != NO_ERROR) goto Exit;
1257
1258    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1259    *pSampleRate = cache->sampleRate();
1260    *pNumChannels = cache->channelCount();
1261    *pFormat = cache->format();
1262    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1263
1264Exit:
1265    if (player != 0) player->reset();
1266    ::close(fd);
1267    return mem;
1268}
1269
1270/*
1271 * Avert your eyes, ugly hack ahead.
1272 * The following is to support music visualizations.
1273 */
1274
1275static const int NUMVIZBUF = 32;
1276static const int VIZBUFFRAMES = 1024;
1277static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1278static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1279
1280static bool gotMem = false;
1281static sp<MemoryHeapBase> heap;
1282static sp<MemoryBase> mem[NUMVIZBUF];
1283static uint64_t endTime;
1284static uint64_t lastReadTime;
1285static uint64_t lastWriteTime;
1286static int writeIdx = 0;
1287
1288static void allocVizBufs() {
1289    if (!gotMem) {
1290        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1291        for (int i=0;i<NUMVIZBUF;i++) {
1292            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1293        }
1294        endTime = 0;
1295        gotMem = true;
1296    }
1297}
1298
1299
1300/*
1301 * Get a buffer of audio data that is about to be played.
1302 * We don't synchronize this because in practice the writer
1303 * is ahead of the reader, and even if we did happen to catch
1304 * a buffer while it's being written, it's just a visualization,
1305 * so no harm done.
1306 */
1307static sp<MemoryBase> getVizBuffer() {
1308
1309    allocVizBufs();
1310
1311    lastReadTime = uptimeMillis();
1312
1313    // if there is no recent buffer (yet), just return empty handed
1314    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1315        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1316        return NULL;
1317    }
1318
1319    int timedelta = endTime - lastReadTime;
1320    if (timedelta < 0) timedelta = 0;
1321    int framedelta = timedelta * 44100 / 1000;
1322    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1323    while (headIdx < 0) {
1324        headIdx += NUMVIZBUF;
1325    }
1326    return mem[headIdx];
1327}
1328
1329// Append the data to the vizualization buffer
1330static void makeVizBuffers(const char *data, int len, uint64_t time) {
1331
1332    allocVizBufs();
1333
1334    uint64_t startTime = time;
1335    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1336    int offset = writeIdx;
1337    int maxoff = heap->getSize() / 2; // in shorts
1338    short *base = (short*)heap->getBase();
1339    short *src = (short*)data;
1340    while (len > 0) {
1341
1342        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1343        // This should still be good enough for a visualization
1344        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1345        src += 2;
1346        len -= frameSize;
1347        if (offset >= maxoff) {
1348            offset = 0;
1349        }
1350    }
1351    writeIdx = offset;
1352    endTime = time + (len / frameSize) / 44;
1353    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1354}
1355
1356sp<IMemory> MediaPlayerService::snoop()
1357{
1358    sp<MemoryBase> mem = getVizBuffer();
1359    return mem;
1360}
1361
1362
1363#undef LOG_TAG
1364#define LOG_TAG "AudioSink"
1365MediaPlayerService::AudioOutput::AudioOutput()
1366    : mCallback(NULL),
1367      mCallbackCookie(NULL) {
1368    mTrack = 0;
1369    mStreamType = AudioSystem::MUSIC;
1370    mLeftVolume = 1.0;
1371    mRightVolume = 1.0;
1372    mLatency = 0;
1373    mMsecsPerFrame = 0;
1374    mNumFramesWritten = 0;
1375    setMinBufferCount();
1376}
1377
1378MediaPlayerService::AudioOutput::~AudioOutput()
1379{
1380    close();
1381}
1382
1383void MediaPlayerService::AudioOutput::setMinBufferCount()
1384{
1385    char value[PROPERTY_VALUE_MAX];
1386    if (property_get("ro.kernel.qemu", value, 0)) {
1387        mIsOnEmulator = true;
1388        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1389    }
1390}
1391
1392bool MediaPlayerService::AudioOutput::isOnEmulator()
1393{
1394    setMinBufferCount();
1395    return mIsOnEmulator;
1396}
1397
1398int MediaPlayerService::AudioOutput::getMinBufferCount()
1399{
1400    setMinBufferCount();
1401    return mMinBufferCount;
1402}
1403
1404ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1405{
1406    if (mTrack == 0) return NO_INIT;
1407    return mTrack->frameCount() * frameSize();
1408}
1409
1410ssize_t MediaPlayerService::AudioOutput::frameCount() const
1411{
1412    if (mTrack == 0) return NO_INIT;
1413    return mTrack->frameCount();
1414}
1415
1416ssize_t MediaPlayerService::AudioOutput::channelCount() const
1417{
1418    if (mTrack == 0) return NO_INIT;
1419    return mTrack->channelCount();
1420}
1421
1422ssize_t MediaPlayerService::AudioOutput::frameSize() const
1423{
1424    if (mTrack == 0) return NO_INIT;
1425    return mTrack->frameSize();
1426}
1427
1428uint32_t MediaPlayerService::AudioOutput::latency () const
1429{
1430    return mLatency;
1431}
1432
1433float MediaPlayerService::AudioOutput::msecsPerFrame() const
1434{
1435    return mMsecsPerFrame;
1436}
1437
1438status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1439{
1440    if (mTrack == 0) return NO_INIT;
1441    return mTrack->getPosition(position);
1442}
1443
1444status_t MediaPlayerService::AudioOutput::open(
1445        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1446        AudioCallback cb, void *cookie)
1447{
1448    mCallback = cb;
1449    mCallbackCookie = cookie;
1450
1451    // Check argument "bufferCount" against the mininum buffer count
1452    if (bufferCount < mMinBufferCount) {
1453        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1454        bufferCount = mMinBufferCount;
1455
1456    }
1457    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1458    if (mTrack) close();
1459    int afSampleRate;
1460    int afFrameCount;
1461    int frameCount;
1462
1463    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1464        return NO_INIT;
1465    }
1466    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1467        return NO_INIT;
1468    }
1469
1470    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1471
1472    AudioTrack *t;
1473    if (mCallback != NULL) {
1474        t = new AudioTrack(
1475                mStreamType,
1476                sampleRate,
1477                format,
1478                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1479                frameCount,
1480                0 /* flags */,
1481                CallbackWrapper,
1482                this);
1483    } else {
1484        t = new AudioTrack(
1485                mStreamType,
1486                sampleRate,
1487                format,
1488                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1489                frameCount);
1490    }
1491
1492    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1493        LOGE("Unable to create audio track");
1494        delete t;
1495        return NO_INIT;
1496    }
1497
1498    LOGV("setVolume");
1499    t->setVolume(mLeftVolume, mRightVolume);
1500    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1501    mLatency = t->latency();
1502    mTrack = t;
1503    return NO_ERROR;
1504}
1505
1506void MediaPlayerService::AudioOutput::start()
1507{
1508    LOGV("start");
1509    if (mTrack) {
1510        mTrack->setVolume(mLeftVolume, mRightVolume);
1511        mTrack->start();
1512        mTrack->getPosition(&mNumFramesWritten);
1513    }
1514}
1515
1516void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1517    // Only make visualization buffers if anyone recently requested visualization data
1518    uint64_t now = uptimeMillis();
1519    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1520        // Based on the current play counter, the number of frames written and
1521        // the current real time we can calculate the approximate real start
1522        // time of the buffer we're about to write.
1523        uint32_t pos;
1524        mTrack->getPosition(&pos);
1525
1526        // we're writing ahead by this many frames:
1527        int ahead = mNumFramesWritten - pos;
1528        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1529        // which is this many milliseconds, assuming 44100 Hz:
1530        ahead /= 44;
1531
1532        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1533        lastWriteTime = now;
1534    }
1535}
1536
1537
1538ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1539{
1540    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1541
1542    //LOGV("write(%p, %u)", buffer, size);
1543    if (mTrack) {
1544        snoopWrite(buffer, size);
1545        ssize_t ret = mTrack->write(buffer, size);
1546        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1547        return ret;
1548    }
1549    return NO_INIT;
1550}
1551
1552void MediaPlayerService::AudioOutput::stop()
1553{
1554    LOGV("stop");
1555    if (mTrack) mTrack->stop();
1556    lastWriteTime = 0;
1557}
1558
1559void MediaPlayerService::AudioOutput::flush()
1560{
1561    LOGV("flush");
1562    if (mTrack) mTrack->flush();
1563}
1564
1565void MediaPlayerService::AudioOutput::pause()
1566{
1567    LOGV("pause");
1568    if (mTrack) mTrack->pause();
1569    lastWriteTime = 0;
1570}
1571
1572void MediaPlayerService::AudioOutput::close()
1573{
1574    LOGV("close");
1575    delete mTrack;
1576    mTrack = 0;
1577}
1578
1579void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1580{
1581    LOGV("setVolume(%f, %f)", left, right);
1582    mLeftVolume = left;
1583    mRightVolume = right;
1584    if (mTrack) {
1585        mTrack->setVolume(left, right);
1586    }
1587}
1588
1589// static
1590void MediaPlayerService::AudioOutput::CallbackWrapper(
1591        int event, void *cookie, void *info) {
1592    //LOGV("callbackwrapper");
1593    if (event != AudioTrack::EVENT_MORE_DATA) {
1594        return;
1595    }
1596
1597    AudioOutput *me = (AudioOutput *)cookie;
1598    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1599
1600    (*me->mCallback)(
1601            me, buffer->raw, buffer->size, me->mCallbackCookie);
1602    me->snoopWrite(buffer->raw, buffer->size);
1603}
1604
1605#undef LOG_TAG
1606#define LOG_TAG "AudioCache"
1607MediaPlayerService::AudioCache::AudioCache(const char* name) :
1608    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1609    mError(NO_ERROR), mCommandComplete(false)
1610{
1611    // create ashmem heap
1612    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1613}
1614
1615uint32_t MediaPlayerService::AudioCache::latency () const
1616{
1617    return 0;
1618}
1619
1620float MediaPlayerService::AudioCache::msecsPerFrame() const
1621{
1622    return mMsecsPerFrame;
1623}
1624
1625status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1626{
1627    if (position == 0) return BAD_VALUE;
1628    *position = mSize;
1629    return NO_ERROR;
1630}
1631
1632status_t MediaPlayerService::AudioCache::open(
1633        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1634        AudioCallback cb, void *cookie)
1635{
1636    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1637    if (cb != NULL) {
1638        return UNKNOWN_ERROR;  // TODO: implement this.
1639    }
1640    if (mHeap->getHeapID() < 0) {
1641        return NO_INIT;
1642    }
1643
1644    mSampleRate = sampleRate;
1645    mChannelCount = (uint16_t)channelCount;
1646    mFormat = (uint16_t)format;
1647    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1648    return NO_ERROR;
1649}
1650
1651ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1652{
1653    LOGV("write(%p, %u)", buffer, size);
1654    if ((buffer == 0) || (size == 0)) return size;
1655
1656    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1657    if (p == NULL) return NO_INIT;
1658    p += mSize;
1659    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1660    if (mSize + size > mHeap->getSize()) {
1661        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1662        size = mHeap->getSize() - mSize;
1663    }
1664    memcpy(p, buffer, size);
1665    mSize += size;
1666    return size;
1667}
1668
1669// call with lock held
1670status_t MediaPlayerService::AudioCache::wait()
1671{
1672    Mutex::Autolock lock(mLock);
1673    if (!mCommandComplete) {
1674        mSignal.wait(mLock);
1675    }
1676    mCommandComplete = false;
1677
1678    if (mError == NO_ERROR) {
1679        LOGV("wait - success");
1680    } else {
1681        LOGV("wait - error");
1682    }
1683    return mError;
1684}
1685
1686void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1687{
1688    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1689    AudioCache* p = static_cast<AudioCache*>(cookie);
1690
1691    // ignore buffering messages
1692    switch (msg)
1693    {
1694    case MEDIA_ERROR:
1695        LOGE("Error %d, %d occurred", ext1, ext2);
1696        p->mError = ext1;
1697        break;
1698    case MEDIA_PREPARED:
1699        LOGV("prepared");
1700        break;
1701    case MEDIA_PLAYBACK_COMPLETE:
1702        LOGV("playback complete");
1703        break;
1704    default:
1705        LOGV("ignored");
1706        return;
1707    }
1708
1709    // wake up thread
1710    p->mCommandComplete = true;
1711    p->mSignal.signal();
1712}
1713
1714} // namespace android
1715