MediaPlayerService.cpp revision 4acdadbd8195f4fb21ff4cb72f09f088097ddf3b 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <dirent.h>
27#include <unistd.h>
28
29#include <string.h>
30
31#include <cutils/atomic.h>
32#include <cutils/properties.h> // for property_get
33
34#include <utils/misc.h>
35
36#include <android_runtime/ActivityManager.h>
37
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46#include <cutils/properties.h>
47
48#include <media/MediaPlayerInterface.h>
49#include <media/mediarecorder.h>
50#include <media/MediaMetadataRetrieverInterface.h>
51#include <media/Metadata.h>
52#include <media/AudioTrack.h>
53
54#include "MediaRecorderClient.h"
55#include "MediaPlayerService.h"
56#include "MetadataRetrieverClient.h"
57
58#include "MidiFile.h"
59#include "VorbisPlayer.h"
60#include <media/PVPlayer.h>
61#include "TestPlayerStub.h"
62#include "StagefrightPlayer.h"
63
64#include <OMX.h>
65
66/* desktop Linux needs a little help with gettid() */
67#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
68#define __KERNEL__
69# include <linux/unistd.h>
70#ifdef _syscall0
71_syscall0(pid_t,gettid)
72#else
73pid_t gettid() { return syscall(__NR_gettid);}
74#endif
75#undef __KERNEL__
76#endif
77
78namespace {
79using android::media::Metadata;
80using android::status_t;
81using android::OK;
82using android::BAD_VALUE;
83using android::NOT_ENOUGH_DATA;
84using android::Parcel;
85
86// Max number of entries in the filter.
87const int kMaxFilterSize = 64;  // I pulled that out of thin air.
88
89// FIXME: Move all the metadata related function in the Metadata.cpp
90
91
92// Unmarshall a filter from a Parcel.
93// Filter format in a parcel:
94//
95//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       number of entries (n)                   |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 1                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101// |                       metadata type 2                         |
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103//  ....
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       metadata type n                         |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107//
108// @param p Parcel that should start with a filter.
109// @param[out] filter On exit contains the list of metadata type to be
110//                    filtered.
111// @param[out] status On exit contains the status code to be returned.
112// @return true if the parcel starts with a valid filter.
113bool unmarshallFilter(const Parcel& p,
114                      Metadata::Filter *filter,
115                      status_t *status)
116{
117    int32_t val;
118    if (p.readInt32(&val) != OK)
119    {
120        LOGE("Failed to read filter's length");
121        *status = NOT_ENOUGH_DATA;
122        return false;
123    }
124
125    if( val > kMaxFilterSize || val < 0)
126    {
127        LOGE("Invalid filter len %d", val);
128        *status = BAD_VALUE;
129        return false;
130    }
131
132    const size_t num = val;
133
134    filter->clear();
135    filter->setCapacity(num);
136
137    size_t size = num * sizeof(Metadata::Type);
138
139
140    if (p.dataAvail() < size)
141    {
142        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
143        *status = NOT_ENOUGH_DATA;
144        return false;
145    }
146
147    const Metadata::Type *data =
148            static_cast<const Metadata::Type*>(p.readInplace(size));
149
150    if (NULL == data)
151    {
152        LOGE("Filter had no data");
153        *status = BAD_VALUE;
154        return false;
155    }
156
157    // TODO: The stl impl of vector would be more efficient here
158    // because it degenerates into a memcpy on pod types. Try to
159    // replace later or use stl::set.
160    for (size_t i = 0; i < num; ++i)
161    {
162        filter->add(*data);
163        ++data;
164    }
165    *status = OK;
166    return true;
167}
168
169// @param filter Of metadata type.
170// @param val To be searched.
171// @return true if a match was found.
172bool findMetadata(const Metadata::Filter& filter, const int32_t val)
173{
174    // Deal with empty and ANY right away
175    if (filter.isEmpty()) return false;
176    if (filter[0] == Metadata::kAny) return true;
177
178    return filter.indexOf(val) >= 0;
179}
180
181}  // anonymous namespace
182
183
184namespace android {
185
186// TODO: Temp hack until we can register players
187typedef struct {
188    const char *extension;
189    const player_type playertype;
190} extmap;
191extmap FILE_EXTS [] =  {
192        {".mid", SONIVOX_PLAYER},
193        {".midi", SONIVOX_PLAYER},
194        {".smf", SONIVOX_PLAYER},
195        {".xmf", SONIVOX_PLAYER},
196        {".imy", SONIVOX_PLAYER},
197        {".rtttl", SONIVOX_PLAYER},
198        {".rtx", SONIVOX_PLAYER},
199        {".ota", SONIVOX_PLAYER},
200        {".ogg", VORBIS_PLAYER},
201        {".oga", VORBIS_PLAYER},
202#ifndef NO_OPENCORE
203        {".wma", PV_PLAYER},
204        {".wmv", PV_PLAYER},
205        {".asf", PV_PLAYER},
206#endif
207};
208
209// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
210/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
211/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
212
213void MediaPlayerService::instantiate() {
214    defaultServiceManager()->addService(
215            String16("media.player"), new MediaPlayerService());
216}
217
218MediaPlayerService::MediaPlayerService()
219{
220    LOGV("MediaPlayerService created");
221    mNextConnId = 1;
222}
223
224MediaPlayerService::~MediaPlayerService()
225{
226    LOGV("MediaPlayerService destroyed");
227}
228
229sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
230{
231    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
232    wp<MediaRecorderClient> w = recorder;
233    Mutex::Autolock lock(mLock);
234    mMediaRecorderClients.add(w);
235    LOGV("Create new media recorder client from pid %d", pid);
236    return recorder;
237}
238
239void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
240{
241    Mutex::Autolock lock(mLock);
242    mMediaRecorderClients.remove(client);
243    LOGV("Delete media recorder client");
244}
245
246sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
247{
248    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
249    LOGV("Create new media retriever from pid %d", pid);
250    return retriever;
251}
252
253sp<IMediaPlayer> MediaPlayerService::create(
254        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
255        const KeyedVector<String8, String8> *headers)
256{
257    int32_t connId = android_atomic_inc(&mNextConnId);
258    sp<Client> c = new Client(this, pid, connId, client);
259    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
260    if (NO_ERROR != c->setDataSource(url, headers))
261    {
262        c.clear();
263        return c;
264    }
265    wp<Client> w = c;
266    Mutex::Autolock lock(mLock);
267    mClients.add(w);
268    return c;
269}
270
271sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
272        int fd, int64_t offset, int64_t length)
273{
274    int32_t connId = android_atomic_inc(&mNextConnId);
275    sp<Client> c = new Client(this, pid, connId, client);
276    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
277            connId, pid, fd, offset, length);
278    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
279        c.clear();
280    } else {
281        wp<Client> w = c;
282        Mutex::Autolock lock(mLock);
283        mClients.add(w);
284    }
285    ::close(fd);
286    return c;
287}
288
289sp<IOMX> MediaPlayerService::getOMX() {
290    Mutex::Autolock autoLock(mLock);
291
292    if (mOMX.get() == NULL) {
293        mOMX = new OMX;
294    }
295
296    return mOMX;
297}
298
299status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
300{
301    const size_t SIZE = 256;
302    char buffer[SIZE];
303    String8 result;
304
305    result.append(" AudioCache\n");
306    if (mHeap != 0) {
307        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
308                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
309        result.append(buffer);
310    }
311    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
312            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
313    result.append(buffer);
314    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
315            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
316    result.append(buffer);
317    ::write(fd, result.string(), result.size());
318    return NO_ERROR;
319}
320
321status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
322{
323    const size_t SIZE = 256;
324    char buffer[SIZE];
325    String8 result;
326
327    result.append(" AudioOutput\n");
328    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
329            mStreamType, mLeftVolume, mRightVolume);
330    result.append(buffer);
331    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
332            mMsecsPerFrame, mLatency);
333    result.append(buffer);
334    ::write(fd, result.string(), result.size());
335    if (mTrack != 0) {
336        mTrack->dump(fd, args);
337    }
338    return NO_ERROR;
339}
340
341status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
342{
343    const size_t SIZE = 256;
344    char buffer[SIZE];
345    String8 result;
346    result.append(" Client\n");
347    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
348            mPid, mConnId, mStatus, mLoop?"true": "false");
349    result.append(buffer);
350    write(fd, result.string(), result.size());
351    if (mAudioOutput != 0) {
352        mAudioOutput->dump(fd, args);
353    }
354    write(fd, "\n", 1);
355    return NO_ERROR;
356}
357
358static int myTid() {
359#ifdef HAVE_GETTID
360    return gettid();
361#else
362    return getpid();
363#endif
364}
365
366#if defined(__arm__)
367extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
368        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
369extern "C" void free_malloc_leak_info(uint8_t* info);
370
371// Use the String-class below instead of String8 to allocate all memory
372// beforehand and not reenter the heap while we are examining it...
373struct MyString8 {
374    static const size_t MAX_SIZE = 256 * 1024;
375
376    MyString8()
377        : mPtr((char *)malloc(MAX_SIZE)) {
378        *mPtr = '\0';
379    }
380
381    ~MyString8() {
382        free(mPtr);
383    }
384
385    void append(const char *s) {
386        strcat(mPtr, s);
387    }
388
389    const char *string() const {
390        return mPtr;
391    }
392
393    size_t size() const {
394        return strlen(mPtr);
395    }
396
397private:
398    char *mPtr;
399
400    MyString8(const MyString8 &);
401    MyString8 &operator=(const MyString8 &);
402};
403
404void memStatus(int fd, const Vector<String16>& args)
405{
406    const size_t SIZE = 256;
407    char buffer[SIZE];
408    MyString8 result;
409
410    typedef struct {
411        size_t size;
412        size_t dups;
413        intptr_t * backtrace;
414    } AllocEntry;
415
416    uint8_t *info = NULL;
417    size_t overallSize = 0;
418    size_t infoSize = 0;
419    size_t totalMemory = 0;
420    size_t backtraceSize = 0;
421
422    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
423    if (info) {
424        uint8_t *ptr = info;
425        size_t count = overallSize / infoSize;
426
427        snprintf(buffer, SIZE, " Allocation count %i\n", count);
428        result.append(buffer);
429        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
430        result.append(buffer);
431
432        AllocEntry * entries = new AllocEntry[count];
433
434        for (size_t i = 0; i < count; i++) {
435            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
436            AllocEntry *e = &entries[i];
437
438            e->size = *reinterpret_cast<size_t *>(ptr);
439            ptr += sizeof(size_t);
440
441            e->dups = *reinterpret_cast<size_t *>(ptr);
442            ptr += sizeof(size_t);
443
444            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
445            ptr += sizeof(intptr_t) * backtraceSize;
446        }
447
448        // Now we need to sort the entries.  They come sorted by size but
449        // not by stack trace which causes problems using diff.
450        bool moved;
451        do {
452            moved = false;
453            for (size_t i = 0; i < (count - 1); i++) {
454                AllocEntry *e1 = &entries[i];
455                AllocEntry *e2 = &entries[i+1];
456
457                bool swap = e1->size < e2->size;
458                if (e1->size == e2->size) {
459                    for(size_t j = 0; j < backtraceSize; j++) {
460                        if (e1->backtrace[j] == e2->backtrace[j]) {
461                            continue;
462                        }
463                        swap = e1->backtrace[j] < e2->backtrace[j];
464                        break;
465                    }
466                }
467                if (swap) {
468                    AllocEntry t = entries[i];
469                    entries[i] = entries[i+1];
470                    entries[i+1] = t;
471                    moved = true;
472                }
473            }
474        } while (moved);
475
476        for (size_t i = 0; i < count; i++) {
477            AllocEntry *e = &entries[i];
478
479            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
480            result.append(buffer);
481            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
482                if (ct) {
483                    result.append(", ");
484                }
485                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
486                result.append(buffer);
487            }
488            result.append("\n");
489        }
490
491        delete[] entries;
492        free_malloc_leak_info(info);
493    }
494
495    write(fd, result.string(), result.size());
496}
497#endif
498
499status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
500{
501    const size_t SIZE = 256;
502    char buffer[SIZE];
503    String8 result;
504    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
505        snprintf(buffer, SIZE, "Permission Denial: "
506                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
507                IPCThreadState::self()->getCallingPid(),
508                IPCThreadState::self()->getCallingUid());
509        result.append(buffer);
510    } else {
511        Mutex::Autolock lock(mLock);
512        for (int i = 0, n = mClients.size(); i < n; ++i) {
513            sp<Client> c = mClients[i].promote();
514            if (c != 0) c->dump(fd, args);
515        }
516        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
517            result.append(" MediaRecorderClient\n");
518            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
519            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
520            result.append(buffer);
521        }
522
523        result.append(" Files opened and/or mapped:\n");
524        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
525        FILE *f = fopen(buffer, "r");
526        if (f) {
527            while (!feof(f)) {
528                fgets(buffer, SIZE, f);
529                if (strstr(buffer, " /sdcard/") ||
530                    strstr(buffer, " /system/sounds/") ||
531                    strstr(buffer, " /system/media/")) {
532                    result.append("  ");
533                    result.append(buffer);
534                }
535            }
536            fclose(f);
537        } else {
538            result.append("couldn't open ");
539            result.append(buffer);
540            result.append("\n");
541        }
542
543        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
544        DIR *d = opendir(buffer);
545        if (d) {
546            struct dirent *ent;
547            while((ent = readdir(d)) != NULL) {
548                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
549                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
550                    struct stat s;
551                    if (lstat(buffer, &s) == 0) {
552                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
553                            char linkto[256];
554                            int len = readlink(buffer, linkto, sizeof(linkto));
555                            if(len > 0) {
556                                if(len > 255) {
557                                    linkto[252] = '.';
558                                    linkto[253] = '.';
559                                    linkto[254] = '.';
560                                    linkto[255] = 0;
561                                } else {
562                                    linkto[len] = 0;
563                                }
564                                if (strstr(linkto, "/sdcard/") == linkto ||
565                                    strstr(linkto, "/system/sounds/") == linkto ||
566                                    strstr(linkto, "/system/media/") == linkto) {
567                                    result.append("  ");
568                                    result.append(buffer);
569                                    result.append(" -> ");
570                                    result.append(linkto);
571                                    result.append("\n");
572                                }
573                            }
574                        } else {
575                            result.append("  unexpected type for ");
576                            result.append(buffer);
577                            result.append("\n");
578                        }
579                    }
580                }
581            }
582            closedir(d);
583        } else {
584            result.append("couldn't open ");
585            result.append(buffer);
586            result.append("\n");
587        }
588
589#if defined(__arm__)
590        bool dumpMem = false;
591        for (size_t i = 0; i < args.size(); i++) {
592            if (args[i] == String16("-m")) {
593                dumpMem = true;
594            }
595        }
596        if (dumpMem) {
597            memStatus(fd, args);
598        }
599#endif
600    }
601    write(fd, result.string(), result.size());
602    return NO_ERROR;
603}
604
605void MediaPlayerService::removeClient(wp<Client> client)
606{
607    Mutex::Autolock lock(mLock);
608    mClients.remove(client);
609}
610
611MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
612        int32_t connId, const sp<IMediaPlayerClient>& client)
613{
614    LOGV("Client(%d) constructor", connId);
615    mPid = pid;
616    mConnId = connId;
617    mService = service;
618    mClient = client;
619    mLoop = false;
620    mStatus = NO_INIT;
621#if CALLBACK_ANTAGONIZER
622    LOGD("create Antagonizer");
623    mAntagonizer = new Antagonizer(notify, this);
624#endif
625}
626
627MediaPlayerService::Client::~Client()
628{
629    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
630    mAudioOutput.clear();
631    wp<Client> client(this);
632    disconnect();
633    mService->removeClient(client);
634}
635
636void MediaPlayerService::Client::disconnect()
637{
638    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
639    // grab local reference and clear main reference to prevent future
640    // access to object
641    sp<MediaPlayerBase> p;
642    {
643        Mutex::Autolock l(mLock);
644        p = mPlayer;
645    }
646    mClient.clear();
647
648    mPlayer.clear();
649
650    // clear the notification to prevent callbacks to dead client
651    // and reset the player. We assume the player will serialize
652    // access to itself if necessary.
653    if (p != 0) {
654        p->setNotifyCallback(0, 0);
655#if CALLBACK_ANTAGONIZER
656        LOGD("kill Antagonizer");
657        mAntagonizer->kill();
658#endif
659        p->reset();
660    }
661
662    IPCThreadState::self()->flushCommands();
663}
664
665static player_type getDefaultPlayerType() {
666#if BUILD_WITH_FULL_STAGEFRIGHT
667    char value[PROPERTY_VALUE_MAX];
668    if (property_get("media.stagefright.enable-player", value, NULL)
669        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
670        return STAGEFRIGHT_PLAYER;
671    }
672#endif
673
674    return PV_PLAYER;
675}
676
677player_type getPlayerType(int fd, int64_t offset, int64_t length)
678{
679    char buf[20];
680    lseek(fd, offset, SEEK_SET);
681    read(fd, buf, sizeof(buf));
682    lseek(fd, offset, SEEK_SET);
683
684    long ident = *((long*)buf);
685
686    // Ogg vorbis?
687    if (ident == 0x5367674f) // 'OggS'
688        return VORBIS_PLAYER;
689
690#ifndef NO_OPENCORE
691    if (ident == 0x75b22630) {
692        // The magic number for .asf files, i.e. wmv and wma content.
693        // These are not currently supported through stagefright.
694        return PV_PLAYER;
695    }
696#endif
697
698    // Some kind of MIDI?
699    EAS_DATA_HANDLE easdata;
700    if (EAS_Init(&easdata) == EAS_SUCCESS) {
701        EAS_FILE locator;
702        locator.path = NULL;
703        locator.fd = fd;
704        locator.offset = offset;
705        locator.length = length;
706        EAS_HANDLE  eashandle;
707        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
708            EAS_CloseFile(easdata, eashandle);
709            EAS_Shutdown(easdata);
710            return SONIVOX_PLAYER;
711        }
712        EAS_Shutdown(easdata);
713    }
714
715    return getDefaultPlayerType();
716}
717
718player_type getPlayerType(const char* url)
719{
720    if (TestPlayerStub::canBeUsed(url)) {
721        return TEST_PLAYER;
722    }
723
724    // use MidiFile for MIDI extensions
725    int lenURL = strlen(url);
726    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
727        int len = strlen(FILE_EXTS[i].extension);
728        int start = lenURL - len;
729        if (start > 0) {
730            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
731                return FILE_EXTS[i].playertype;
732            }
733        }
734    }
735
736    if (!strncasecmp(url, "http://", 7)) {
737        char value[PROPERTY_VALUE_MAX];
738        if (!property_get("media.stagefright.enable-http", value, NULL)
739            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
740            // For now, we're going to use PV for http-based playback
741            // by default until we can clear up a few more issues.
742            return PV_PLAYER;
743        }
744    }
745
746    // Use PV_PLAYER for rtsp for now
747    if (!strncasecmp(url, "rtsp://", 7)) {
748        return PV_PLAYER;
749    }
750
751    return getDefaultPlayerType();
752}
753
754static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
755        notify_callback_f notifyFunc)
756{
757    sp<MediaPlayerBase> p;
758    switch (playerType) {
759#ifndef NO_OPENCORE
760        case PV_PLAYER:
761            LOGV(" create PVPlayer");
762            p = new PVPlayer();
763            break;
764#endif
765        case SONIVOX_PLAYER:
766            LOGV(" create MidiFile");
767            p = new MidiFile();
768            break;
769        case VORBIS_PLAYER:
770            LOGV(" create VorbisPlayer");
771            p = new VorbisPlayer();
772            break;
773#if BUILD_WITH_FULL_STAGEFRIGHT
774        case STAGEFRIGHT_PLAYER:
775            LOGV(" create StagefrightPlayer");
776            p = new StagefrightPlayer;
777            break;
778#endif
779        case TEST_PLAYER:
780            LOGV("Create Test Player stub");
781            p = new TestPlayerStub();
782            break;
783    }
784    if (p != NULL) {
785        if (p->initCheck() == NO_ERROR) {
786            p->setNotifyCallback(cookie, notifyFunc);
787        } else {
788            p.clear();
789        }
790    }
791    if (p == NULL) {
792        LOGE("Failed to create player object");
793    }
794    return p;
795}
796
797sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
798{
799    // determine if we have the right player type
800    sp<MediaPlayerBase> p = mPlayer;
801    if ((p != NULL) && (p->playerType() != playerType)) {
802        LOGV("delete player");
803        p.clear();
804    }
805    if (p == NULL) {
806        p = android::createPlayer(playerType, this, notify);
807    }
808    return p;
809}
810
811status_t MediaPlayerService::Client::setDataSource(
812        const char *url, const KeyedVector<String8, String8> *headers)
813{
814    LOGV("setDataSource(%s)", url);
815    if (url == NULL)
816        return UNKNOWN_ERROR;
817
818    if (strncmp(url, "content://", 10) == 0) {
819        // get a filedescriptor for the content Uri and
820        // pass it to the setDataSource(fd) method
821
822        String16 url16(url);
823        int fd = android::openContentProviderFile(url16);
824        if (fd < 0)
825        {
826            LOGE("Couldn't open fd for %s", url);
827            return UNKNOWN_ERROR;
828        }
829        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
830        close(fd);
831        return mStatus;
832    } else {
833        player_type playerType = getPlayerType(url);
834        LOGV("player type = %d", playerType);
835
836        // create the right type of player
837        sp<MediaPlayerBase> p = createPlayer(playerType);
838        if (p == NULL) return NO_INIT;
839
840        if (!p->hardwareOutput()) {
841            mAudioOutput = new AudioOutput();
842            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
843        }
844
845        // now set data source
846        LOGV(" setDataSource");
847        mStatus = p->setDataSource(url, headers);
848        if (mStatus == NO_ERROR) {
849            mPlayer = p;
850        } else {
851            LOGE("  error: %d", mStatus);
852        }
853        return mStatus;
854    }
855}
856
857status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
858{
859    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
860    struct stat sb;
861    int ret = fstat(fd, &sb);
862    if (ret != 0) {
863        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
864        return UNKNOWN_ERROR;
865    }
866
867    LOGV("st_dev  = %llu", sb.st_dev);
868    LOGV("st_mode = %u", sb.st_mode);
869    LOGV("st_uid  = %lu", sb.st_uid);
870    LOGV("st_gid  = %lu", sb.st_gid);
871    LOGV("st_size = %llu", sb.st_size);
872
873    if (offset >= sb.st_size) {
874        LOGE("offset error");
875        ::close(fd);
876        return UNKNOWN_ERROR;
877    }
878    if (offset + length > sb.st_size) {
879        length = sb.st_size - offset;
880        LOGV("calculated length = %lld", length);
881    }
882
883    player_type playerType = getPlayerType(fd, offset, length);
884    LOGV("player type = %d", playerType);
885
886    // create the right type of player
887    sp<MediaPlayerBase> p = createPlayer(playerType);
888    if (p == NULL) return NO_INIT;
889
890    if (!p->hardwareOutput()) {
891        mAudioOutput = new AudioOutput();
892        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
893    }
894
895    // now set data source
896    mStatus = p->setDataSource(fd, offset, length);
897    if (mStatus == NO_ERROR) mPlayer = p;
898    return mStatus;
899}
900
901status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
902{
903    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
904    sp<MediaPlayerBase> p = getPlayer();
905    if (p == 0) return UNKNOWN_ERROR;
906    return p->setVideoSurface(surface);
907}
908
909status_t MediaPlayerService::Client::invoke(const Parcel& request,
910                                            Parcel *reply)
911{
912    sp<MediaPlayerBase> p = getPlayer();
913    if (p == NULL) return UNKNOWN_ERROR;
914    return p->invoke(request, reply);
915}
916
917// This call doesn't need to access the native player.
918status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
919{
920    status_t status;
921    media::Metadata::Filter allow, drop;
922
923    if (unmarshallFilter(filter, &allow, &status) &&
924        unmarshallFilter(filter, &drop, &status)) {
925        Mutex::Autolock lock(mLock);
926
927        mMetadataAllow = allow;
928        mMetadataDrop = drop;
929    }
930    return status;
931}
932
933status_t MediaPlayerService::Client::getMetadata(
934        bool update_only, bool apply_filter, Parcel *reply)
935{
936    sp<MediaPlayerBase> player = getPlayer();
937    if (player == 0) return UNKNOWN_ERROR;
938
939    status_t status;
940    // Placeholder for the return code, updated by the caller.
941    reply->writeInt32(-1);
942
943    media::Metadata::Filter ids;
944
945    // We don't block notifications while we fetch the data. We clear
946    // mMetadataUpdated first so we don't lose notifications happening
947    // during the rest of this call.
948    {
949        Mutex::Autolock lock(mLock);
950        if (update_only) {
951            ids = mMetadataUpdated;
952        }
953        mMetadataUpdated.clear();
954    }
955
956    media::Metadata metadata(reply);
957
958    metadata.appendHeader();
959    status = player->getMetadata(ids, reply);
960
961    if (status != OK) {
962        metadata.resetParcel();
963        LOGE("getMetadata failed %d", status);
964        return status;
965    }
966
967    // FIXME: Implement filtering on the result. Not critical since
968    // filtering takes place on the update notifications already. This
969    // would be when all the metadata are fetch and a filter is set.
970
971    // Everything is fine, update the metadata length.
972    metadata.updateLength();
973    return OK;
974}
975
976status_t MediaPlayerService::Client::suspend() {
977    sp<MediaPlayerBase> p = getPlayer();
978    if (p == 0) return UNKNOWN_ERROR;
979
980    return p->suspend();
981}
982
983status_t MediaPlayerService::Client::resume() {
984    sp<MediaPlayerBase> p = getPlayer();
985    if (p == 0) return UNKNOWN_ERROR;
986
987    return p->resume();
988}
989
990status_t MediaPlayerService::Client::prepareAsync()
991{
992    LOGV("[%d] prepareAsync", mConnId);
993    sp<MediaPlayerBase> p = getPlayer();
994    if (p == 0) return UNKNOWN_ERROR;
995    status_t ret = p->prepareAsync();
996#if CALLBACK_ANTAGONIZER
997    LOGD("start Antagonizer");
998    if (ret == NO_ERROR) mAntagonizer->start();
999#endif
1000    return ret;
1001}
1002
1003status_t MediaPlayerService::Client::start()
1004{
1005    LOGV("[%d] start", mConnId);
1006    sp<MediaPlayerBase> p = getPlayer();
1007    if (p == 0) return UNKNOWN_ERROR;
1008    p->setLooping(mLoop);
1009    return p->start();
1010}
1011
1012status_t MediaPlayerService::Client::stop()
1013{
1014    LOGV("[%d] stop", mConnId);
1015    sp<MediaPlayerBase> p = getPlayer();
1016    if (p == 0) return UNKNOWN_ERROR;
1017    return p->stop();
1018}
1019
1020status_t MediaPlayerService::Client::pause()
1021{
1022    LOGV("[%d] pause", mConnId);
1023    sp<MediaPlayerBase> p = getPlayer();
1024    if (p == 0) return UNKNOWN_ERROR;
1025    return p->pause();
1026}
1027
1028status_t MediaPlayerService::Client::isPlaying(bool* state)
1029{
1030    *state = false;
1031    sp<MediaPlayerBase> p = getPlayer();
1032    if (p == 0) return UNKNOWN_ERROR;
1033    *state = p->isPlaying();
1034    LOGV("[%d] isPlaying: %d", mConnId, *state);
1035    return NO_ERROR;
1036}
1037
1038status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1039{
1040    LOGV("getCurrentPosition");
1041    sp<MediaPlayerBase> p = getPlayer();
1042    if (p == 0) return UNKNOWN_ERROR;
1043    status_t ret = p->getCurrentPosition(msec);
1044    if (ret == NO_ERROR) {
1045        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1046    } else {
1047        LOGE("getCurrentPosition returned %d", ret);
1048    }
1049    return ret;
1050}
1051
1052status_t MediaPlayerService::Client::getDuration(int *msec)
1053{
1054    LOGV("getDuration");
1055    sp<MediaPlayerBase> p = getPlayer();
1056    if (p == 0) return UNKNOWN_ERROR;
1057    status_t ret = p->getDuration(msec);
1058    if (ret == NO_ERROR) {
1059        LOGV("[%d] getDuration = %d", mConnId, *msec);
1060    } else {
1061        LOGE("getDuration returned %d", ret);
1062    }
1063    return ret;
1064}
1065
1066status_t MediaPlayerService::Client::seekTo(int msec)
1067{
1068    LOGV("[%d] seekTo(%d)", mConnId, msec);
1069    sp<MediaPlayerBase> p = getPlayer();
1070    if (p == 0) return UNKNOWN_ERROR;
1071    return p->seekTo(msec);
1072}
1073
1074status_t MediaPlayerService::Client::reset()
1075{
1076    LOGV("[%d] reset", mConnId);
1077    sp<MediaPlayerBase> p = getPlayer();
1078    if (p == 0) return UNKNOWN_ERROR;
1079    return p->reset();
1080}
1081
1082status_t MediaPlayerService::Client::setAudioStreamType(int type)
1083{
1084    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1085    // TODO: for hardware output, call player instead
1086    Mutex::Autolock l(mLock);
1087    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1088    return NO_ERROR;
1089}
1090
1091status_t MediaPlayerService::Client::setLooping(int loop)
1092{
1093    LOGV("[%d] setLooping(%d)", mConnId, loop);
1094    mLoop = loop;
1095    sp<MediaPlayerBase> p = getPlayer();
1096    if (p != 0) return p->setLooping(loop);
1097    return NO_ERROR;
1098}
1099
1100status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1101{
1102    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1103    // TODO: for hardware output, call player instead
1104    Mutex::Autolock l(mLock);
1105    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1106    return NO_ERROR;
1107}
1108
1109
1110void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1111{
1112    Client* client = static_cast<Client*>(cookie);
1113
1114    if (MEDIA_INFO == msg &&
1115        MEDIA_INFO_METADATA_UPDATE == ext1) {
1116        const media::Metadata::Type metadata_type = ext2;
1117
1118        if(client->shouldDropMetadata(metadata_type)) {
1119            return;
1120        }
1121
1122        // Update the list of metadata that have changed. getMetadata
1123        // also access mMetadataUpdated and clears it.
1124        client->addNewMetadataUpdate(metadata_type);
1125    }
1126    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1127    client->mClient->notify(msg, ext1, ext2);
1128}
1129
1130
1131bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1132{
1133    Mutex::Autolock lock(mLock);
1134
1135    if (findMetadata(mMetadataDrop, code)) {
1136        return true;
1137    }
1138
1139    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1140        return false;
1141    } else {
1142        return true;
1143    }
1144}
1145
1146
1147void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1148    Mutex::Autolock lock(mLock);
1149    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1150        mMetadataUpdated.add(metadata_type);
1151    }
1152}
1153
1154#if CALLBACK_ANTAGONIZER
1155const int Antagonizer::interval = 10000; // 10 msecs
1156
1157Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1158    mExit(false), mActive(false), mClient(client), mCb(cb)
1159{
1160    createThread(callbackThread, this);
1161}
1162
1163void Antagonizer::kill()
1164{
1165    Mutex::Autolock _l(mLock);
1166    mActive = false;
1167    mExit = true;
1168    mCondition.wait(mLock);
1169}
1170
1171int Antagonizer::callbackThread(void* user)
1172{
1173    LOGD("Antagonizer started");
1174    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1175    while (!p->mExit) {
1176        if (p->mActive) {
1177            LOGV("send event");
1178            p->mCb(p->mClient, 0, 0, 0);
1179        }
1180        usleep(interval);
1181    }
1182    Mutex::Autolock _l(p->mLock);
1183    p->mCondition.signal();
1184    LOGD("Antagonizer stopped");
1185    return 0;
1186}
1187#endif
1188
1189static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1190
1191sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1192{
1193    LOGV("decode(%s)", url);
1194    sp<MemoryBase> mem;
1195    sp<MediaPlayerBase> player;
1196
1197    // Protect our precious, precious DRMd ringtones by only allowing
1198    // decoding of http, but not filesystem paths or content Uris.
1199    // If the application wants to decode those, it should open a
1200    // filedescriptor for them and use that.
1201    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1202        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1203        return mem;
1204    }
1205
1206    player_type playerType = getPlayerType(url);
1207    LOGV("player type = %d", playerType);
1208
1209    // create the right type of player
1210    sp<AudioCache> cache = new AudioCache(url);
1211    player = android::createPlayer(playerType, cache.get(), cache->notify);
1212    if (player == NULL) goto Exit;
1213    if (player->hardwareOutput()) goto Exit;
1214
1215    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1216
1217    // set data source
1218    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1219
1220    LOGV("prepare");
1221    player->prepareAsync();
1222
1223    LOGV("wait for prepare");
1224    if (cache->wait() != NO_ERROR) goto Exit;
1225
1226    LOGV("start");
1227    player->start();
1228
1229    LOGV("wait for playback complete");
1230    if (cache->wait() != NO_ERROR) goto Exit;
1231
1232    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1233    *pSampleRate = cache->sampleRate();
1234    *pNumChannels = cache->channelCount();
1235    *pFormat = cache->format();
1236    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1237
1238Exit:
1239    if (player != 0) player->reset();
1240    return mem;
1241}
1242
1243sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1244{
1245    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1246    sp<MemoryBase> mem;
1247    sp<MediaPlayerBase> player;
1248
1249    player_type playerType = getPlayerType(fd, offset, length);
1250    LOGV("player type = %d", playerType);
1251
1252    // create the right type of player
1253    sp<AudioCache> cache = new AudioCache("decode_fd");
1254    player = android::createPlayer(playerType, cache.get(), cache->notify);
1255    if (player == NULL) goto Exit;
1256    if (player->hardwareOutput()) goto Exit;
1257
1258    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1259
1260    // set data source
1261    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1262
1263    LOGV("prepare");
1264    player->prepareAsync();
1265
1266    LOGV("wait for prepare");
1267    if (cache->wait() != NO_ERROR) goto Exit;
1268
1269    LOGV("start");
1270    player->start();
1271
1272    LOGV("wait for playback complete");
1273    if (cache->wait() != NO_ERROR) goto Exit;
1274
1275    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1276    *pSampleRate = cache->sampleRate();
1277    *pNumChannels = cache->channelCount();
1278    *pFormat = cache->format();
1279    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1280
1281Exit:
1282    if (player != 0) player->reset();
1283    ::close(fd);
1284    return mem;
1285}
1286
1287/*
1288 * Avert your eyes, ugly hack ahead.
1289 * The following is to support music visualizations.
1290 */
1291
1292static const int NUMVIZBUF = 32;
1293static const int VIZBUFFRAMES = 1024;
1294static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1295static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1296
1297static bool gotMem = false;
1298static sp<MemoryHeapBase> heap;
1299static sp<MemoryBase> mem[NUMVIZBUF];
1300static uint64_t endTime;
1301static uint64_t lastReadTime;
1302static uint64_t lastWriteTime;
1303static int writeIdx = 0;
1304
1305static void allocVizBufs() {
1306    if (!gotMem) {
1307        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1308        for (int i=0;i<NUMVIZBUF;i++) {
1309            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1310        }
1311        endTime = 0;
1312        gotMem = true;
1313    }
1314}
1315
1316
1317/*
1318 * Get a buffer of audio data that is about to be played.
1319 * We don't synchronize this because in practice the writer
1320 * is ahead of the reader, and even if we did happen to catch
1321 * a buffer while it's being written, it's just a visualization,
1322 * so no harm done.
1323 */
1324static sp<MemoryBase> getVizBuffer() {
1325
1326    allocVizBufs();
1327
1328    lastReadTime = uptimeMillis();
1329
1330    // if there is no recent buffer (yet), just return empty handed
1331    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1332        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1333        return NULL;
1334    }
1335
1336    int timedelta = endTime - lastReadTime;
1337    if (timedelta < 0) timedelta = 0;
1338    int framedelta = timedelta * 44100 / 1000;
1339    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1340    while (headIdx < 0) {
1341        headIdx += NUMVIZBUF;
1342    }
1343    return mem[headIdx];
1344}
1345
1346// Append the data to the vizualization buffer
1347static void makeVizBuffers(const char *data, int len, uint64_t time) {
1348
1349    allocVizBufs();
1350
1351    uint64_t startTime = time;
1352    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1353    int offset = writeIdx;
1354    int maxoff = heap->getSize() / 2; // in shorts
1355    short *base = (short*)heap->getBase();
1356    short *src = (short*)data;
1357    while (len > 0) {
1358
1359        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1360        // This should still be good enough for a visualization
1361        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1362        src += 2;
1363        len -= frameSize;
1364        if (offset >= maxoff) {
1365            offset = 0;
1366        }
1367    }
1368    writeIdx = offset;
1369    endTime = time + (len / frameSize) / 44;
1370    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1371}
1372
1373sp<IMemory> MediaPlayerService::snoop()
1374{
1375    sp<MemoryBase> mem = getVizBuffer();
1376    return mem;
1377}
1378
1379
1380#undef LOG_TAG
1381#define LOG_TAG "AudioSink"
1382MediaPlayerService::AudioOutput::AudioOutput()
1383    : mCallback(NULL),
1384      mCallbackCookie(NULL) {
1385    mTrack = 0;
1386    mStreamType = AudioSystem::MUSIC;
1387    mLeftVolume = 1.0;
1388    mRightVolume = 1.0;
1389    mLatency = 0;
1390    mMsecsPerFrame = 0;
1391    mNumFramesWritten = 0;
1392    setMinBufferCount();
1393}
1394
1395MediaPlayerService::AudioOutput::~AudioOutput()
1396{
1397    close();
1398}
1399
1400void MediaPlayerService::AudioOutput::setMinBufferCount()
1401{
1402    char value[PROPERTY_VALUE_MAX];
1403    if (property_get("ro.kernel.qemu", value, 0)) {
1404        mIsOnEmulator = true;
1405        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1406    }
1407}
1408
1409bool MediaPlayerService::AudioOutput::isOnEmulator()
1410{
1411    setMinBufferCount();
1412    return mIsOnEmulator;
1413}
1414
1415int MediaPlayerService::AudioOutput::getMinBufferCount()
1416{
1417    setMinBufferCount();
1418    return mMinBufferCount;
1419}
1420
1421ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1422{
1423    if (mTrack == 0) return NO_INIT;
1424    return mTrack->frameCount() * frameSize();
1425}
1426
1427ssize_t MediaPlayerService::AudioOutput::frameCount() const
1428{
1429    if (mTrack == 0) return NO_INIT;
1430    return mTrack->frameCount();
1431}
1432
1433ssize_t MediaPlayerService::AudioOutput::channelCount() const
1434{
1435    if (mTrack == 0) return NO_INIT;
1436    return mTrack->channelCount();
1437}
1438
1439ssize_t MediaPlayerService::AudioOutput::frameSize() const
1440{
1441    if (mTrack == 0) return NO_INIT;
1442    return mTrack->frameSize();
1443}
1444
1445uint32_t MediaPlayerService::AudioOutput::latency () const
1446{
1447    return mLatency;
1448}
1449
1450float MediaPlayerService::AudioOutput::msecsPerFrame() const
1451{
1452    return mMsecsPerFrame;
1453}
1454
1455status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1456{
1457    if (mTrack == 0) return NO_INIT;
1458    return mTrack->getPosition(position);
1459}
1460
1461status_t MediaPlayerService::AudioOutput::open(
1462        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1463        AudioCallback cb, void *cookie)
1464{
1465    mCallback = cb;
1466    mCallbackCookie = cookie;
1467
1468    // Check argument "bufferCount" against the mininum buffer count
1469    if (bufferCount < mMinBufferCount) {
1470        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1471        bufferCount = mMinBufferCount;
1472
1473    }
1474    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1475    if (mTrack) close();
1476    int afSampleRate;
1477    int afFrameCount;
1478    int frameCount;
1479
1480    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1481        return NO_INIT;
1482    }
1483    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1484        return NO_INIT;
1485    }
1486
1487    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1488
1489    AudioTrack *t;
1490    if (mCallback != NULL) {
1491        t = new AudioTrack(
1492                mStreamType,
1493                sampleRate,
1494                format,
1495                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1496                frameCount,
1497                0 /* flags */,
1498                CallbackWrapper,
1499                this);
1500    } else {
1501        t = new AudioTrack(
1502                mStreamType,
1503                sampleRate,
1504                format,
1505                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1506                frameCount);
1507    }
1508
1509    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1510        LOGE("Unable to create audio track");
1511        delete t;
1512        return NO_INIT;
1513    }
1514
1515    LOGV("setVolume");
1516    t->setVolume(mLeftVolume, mRightVolume);
1517    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1518    mLatency = t->latency();
1519    mTrack = t;
1520    return NO_ERROR;
1521}
1522
1523void MediaPlayerService::AudioOutput::start()
1524{
1525    LOGV("start");
1526    if (mTrack) {
1527        mTrack->setVolume(mLeftVolume, mRightVolume);
1528        mTrack->start();
1529        mTrack->getPosition(&mNumFramesWritten);
1530    }
1531}
1532
1533void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1534    // Only make visualization buffers if anyone recently requested visualization data
1535    uint64_t now = uptimeMillis();
1536    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1537        // Based on the current play counter, the number of frames written and
1538        // the current real time we can calculate the approximate real start
1539        // time of the buffer we're about to write.
1540        uint32_t pos;
1541        mTrack->getPosition(&pos);
1542
1543        // we're writing ahead by this many frames:
1544        int ahead = mNumFramesWritten - pos;
1545        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1546        // which is this many milliseconds, assuming 44100 Hz:
1547        ahead /= 44;
1548
1549        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1550        lastWriteTime = now;
1551    }
1552}
1553
1554
1555ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1556{
1557    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1558
1559    //LOGV("write(%p, %u)", buffer, size);
1560    if (mTrack) {
1561        snoopWrite(buffer, size);
1562        ssize_t ret = mTrack->write(buffer, size);
1563        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1564        return ret;
1565    }
1566    return NO_INIT;
1567}
1568
1569void MediaPlayerService::AudioOutput::stop()
1570{
1571    LOGV("stop");
1572    if (mTrack) mTrack->stop();
1573    lastWriteTime = 0;
1574}
1575
1576void MediaPlayerService::AudioOutput::flush()
1577{
1578    LOGV("flush");
1579    if (mTrack) mTrack->flush();
1580}
1581
1582void MediaPlayerService::AudioOutput::pause()
1583{
1584    LOGV("pause");
1585    if (mTrack) mTrack->pause();
1586    lastWriteTime = 0;
1587}
1588
1589void MediaPlayerService::AudioOutput::close()
1590{
1591    LOGV("close");
1592    delete mTrack;
1593    mTrack = 0;
1594}
1595
1596void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1597{
1598    LOGV("setVolume(%f, %f)", left, right);
1599    mLeftVolume = left;
1600    mRightVolume = right;
1601    if (mTrack) {
1602        mTrack->setVolume(left, right);
1603    }
1604}
1605
1606// static
1607void MediaPlayerService::AudioOutput::CallbackWrapper(
1608        int event, void *cookie, void *info) {
1609    //LOGV("callbackwrapper");
1610    if (event != AudioTrack::EVENT_MORE_DATA) {
1611        return;
1612    }
1613
1614    AudioOutput *me = (AudioOutput *)cookie;
1615    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1616
1617    size_t actualSize = (*me->mCallback)(
1618            me, buffer->raw, buffer->size, me->mCallbackCookie);
1619
1620    buffer->size = actualSize;
1621
1622    if (actualSize > 0) {
1623        me->snoopWrite(buffer->raw, actualSize);
1624    }
1625}
1626
1627#undef LOG_TAG
1628#define LOG_TAG "AudioCache"
1629MediaPlayerService::AudioCache::AudioCache(const char* name) :
1630    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1631    mError(NO_ERROR), mCommandComplete(false)
1632{
1633    // create ashmem heap
1634    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1635}
1636
1637uint32_t MediaPlayerService::AudioCache::latency () const
1638{
1639    return 0;
1640}
1641
1642float MediaPlayerService::AudioCache::msecsPerFrame() const
1643{
1644    return mMsecsPerFrame;
1645}
1646
1647status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1648{
1649    if (position == 0) return BAD_VALUE;
1650    *position = mSize;
1651    return NO_ERROR;
1652}
1653
1654////////////////////////////////////////////////////////////////////////////////
1655
1656struct CallbackThread : public Thread {
1657    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1658                   MediaPlayerBase::AudioSink::AudioCallback cb,
1659                   void *cookie);
1660
1661protected:
1662    virtual ~CallbackThread();
1663
1664    virtual bool threadLoop();
1665
1666private:
1667    wp<MediaPlayerBase::AudioSink> mSink;
1668    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1669    void *mCookie;
1670    void *mBuffer;
1671    size_t mBufferSize;
1672
1673    CallbackThread(const CallbackThread &);
1674    CallbackThread &operator=(const CallbackThread &);
1675};
1676
1677CallbackThread::CallbackThread(
1678        const wp<MediaPlayerBase::AudioSink> &sink,
1679        MediaPlayerBase::AudioSink::AudioCallback cb,
1680        void *cookie)
1681    : mSink(sink),
1682      mCallback(cb),
1683      mCookie(cookie),
1684      mBuffer(NULL),
1685      mBufferSize(0) {
1686}
1687
1688CallbackThread::~CallbackThread() {
1689    if (mBuffer) {
1690        free(mBuffer);
1691        mBuffer = NULL;
1692    }
1693}
1694
1695bool CallbackThread::threadLoop() {
1696    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1697    if (sink == NULL) {
1698        return false;
1699    }
1700
1701    if (mBuffer == NULL) {
1702        mBufferSize = sink->bufferSize();
1703        mBuffer = malloc(mBufferSize);
1704    }
1705
1706    size_t actualSize =
1707        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1708
1709    if (actualSize > 0) {
1710        sink->write(mBuffer, actualSize);
1711    }
1712
1713    return true;
1714}
1715
1716////////////////////////////////////////////////////////////////////////////////
1717
1718status_t MediaPlayerService::AudioCache::open(
1719        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1720        AudioCallback cb, void *cookie)
1721{
1722    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1723    if (mHeap->getHeapID() < 0) {
1724        return NO_INIT;
1725    }
1726
1727    mSampleRate = sampleRate;
1728    mChannelCount = (uint16_t)channelCount;
1729    mFormat = (uint16_t)format;
1730    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1731
1732    if (cb != NULL) {
1733        mCallbackThread = new CallbackThread(this, cb, cookie);
1734    }
1735    return NO_ERROR;
1736}
1737
1738void MediaPlayerService::AudioCache::start() {
1739    if (mCallbackThread != NULL) {
1740        mCallbackThread->run("AudioCache callback");
1741    }
1742}
1743
1744void MediaPlayerService::AudioCache::stop() {
1745    if (mCallbackThread != NULL) {
1746        mCallbackThread->requestExitAndWait();
1747    }
1748}
1749
1750ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1751{
1752    LOGV("write(%p, %u)", buffer, size);
1753    if ((buffer == 0) || (size == 0)) return size;
1754
1755    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1756    if (p == NULL) return NO_INIT;
1757    p += mSize;
1758    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1759    if (mSize + size > mHeap->getSize()) {
1760        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1761        size = mHeap->getSize() - mSize;
1762    }
1763    memcpy(p, buffer, size);
1764    mSize += size;
1765    return size;
1766}
1767
1768// call with lock held
1769status_t MediaPlayerService::AudioCache::wait()
1770{
1771    Mutex::Autolock lock(mLock);
1772    while (!mCommandComplete) {
1773        mSignal.wait(mLock);
1774    }
1775    mCommandComplete = false;
1776
1777    if (mError == NO_ERROR) {
1778        LOGV("wait - success");
1779    } else {
1780        LOGV("wait - error");
1781    }
1782    return mError;
1783}
1784
1785void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1786{
1787    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1788    AudioCache* p = static_cast<AudioCache*>(cookie);
1789
1790    // ignore buffering messages
1791    switch (msg)
1792    {
1793    case MEDIA_ERROR:
1794        LOGE("Error %d, %d occurred", ext1, ext2);
1795        p->mError = ext1;
1796        break;
1797    case MEDIA_PREPARED:
1798        LOGV("prepared");
1799        break;
1800    case MEDIA_PLAYBACK_COMPLETE:
1801        LOGV("playback complete");
1802        break;
1803    default:
1804        LOGV("ignored");
1805        return;
1806    }
1807
1808    // wake up thread
1809    Mutex::Autolock lock(p->mLock);
1810    p->mCommandComplete = true;
1811    p->mSignal.signal();
1812}
1813
1814} // namespace android
1815