MediaPlayerService.cpp revision 3cf4e43cdd391502690c07e08e805aa8ff5db0c0 
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        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
434        result.append(buffer);
435
436        AllocEntry * entries = new AllocEntry[count];
437
438        for (size_t i = 0; i < count; i++) {
439            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
440            AllocEntry *e = &entries[i];
441
442            e->size = *reinterpret_cast<size_t *>(ptr);
443            ptr += sizeof(size_t);
444
445            e->dups = *reinterpret_cast<size_t *>(ptr);
446            ptr += sizeof(size_t);
447
448            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
449            ptr += sizeof(intptr_t) * backtraceSize;
450        }
451
452        // Now we need to sort the entries.  They come sorted by size but
453        // not by stack trace which causes problems using diff.
454        bool moved;
455        do {
456            moved = false;
457            for (size_t i = 0; i < (count - 1); i++) {
458                AllocEntry *e1 = &entries[i];
459                AllocEntry *e2 = &entries[i+1];
460
461                bool swap = e1->size < e2->size;
462                if (e1->size == e2->size) {
463                    for(size_t j = 0; j < backtraceSize; j++) {
464                        if (e1->backtrace[j] == e2->backtrace[j]) {
465                            continue;
466                        }
467                        swap = e1->backtrace[j] < e2->backtrace[j];
468                        break;
469                    }
470                }
471                if (swap) {
472                    AllocEntry t = entries[i];
473                    entries[i] = entries[i+1];
474                    entries[i+1] = t;
475                    moved = true;
476                }
477            }
478        } while (moved);
479
480        for (size_t i = 0; i < count; i++) {
481            AllocEntry *e = &entries[i];
482
483            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
484            result.append(buffer);
485            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
486                if (ct) {
487                    result.append(", ");
488                }
489                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
490                result.append(buffer);
491            }
492            result.append("\n");
493        }
494
495        delete[] entries;
496        free_malloc_leak_info(info);
497    }
498
499    write(fd, result.string(), result.size());
500}
501#endif
502
503status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
504{
505    const size_t SIZE = 256;
506    char buffer[SIZE];
507    String8 result;
508    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
509        snprintf(buffer, SIZE, "Permission Denial: "
510                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
511                IPCThreadState::self()->getCallingPid(),
512                IPCThreadState::self()->getCallingUid());
513        result.append(buffer);
514    } else {
515        Mutex::Autolock lock(mLock);
516        for (int i = 0, n = mClients.size(); i < n; ++i) {
517            sp<Client> c = mClients[i].promote();
518            if (c != 0) c->dump(fd, args);
519        }
520        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
521            result.append(" MediaRecorderClient\n");
522            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
523            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
524            result.append(buffer);
525        }
526
527        result.append(" Files opened and/or mapped:\n");
528        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
529        FILE *f = fopen(buffer, "r");
530        if (f) {
531            while (!feof(f)) {
532                fgets(buffer, SIZE, f);
533                if (strstr(buffer, " /sdcard/") ||
534                    strstr(buffer, " /system/sounds/") ||
535                    strstr(buffer, " /system/media/")) {
536                    result.append("  ");
537                    result.append(buffer);
538                }
539            }
540            fclose(f);
541        } else {
542            result.append("couldn't open ");
543            result.append(buffer);
544            result.append("\n");
545        }
546
547        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
548        DIR *d = opendir(buffer);
549        if (d) {
550            struct dirent *ent;
551            while((ent = readdir(d)) != NULL) {
552                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
553                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
554                    struct stat s;
555                    if (lstat(buffer, &s) == 0) {
556                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
557                            char linkto[256];
558                            int len = readlink(buffer, linkto, sizeof(linkto));
559                            if(len > 0) {
560                                if(len > 255) {
561                                    linkto[252] = '.';
562                                    linkto[253] = '.';
563                                    linkto[254] = '.';
564                                    linkto[255] = 0;
565                                } else {
566                                    linkto[len] = 0;
567                                }
568                                if (strstr(linkto, "/sdcard/") == linkto ||
569                                    strstr(linkto, "/system/sounds/") == linkto ||
570                                    strstr(linkto, "/system/media/") == linkto) {
571                                    result.append("  ");
572                                    result.append(buffer);
573                                    result.append(" -> ");
574                                    result.append(linkto);
575                                    result.append("\n");
576                                }
577                            }
578                        } else {
579                            result.append("  unexpected type for ");
580                            result.append(buffer);
581                            result.append("\n");
582                        }
583                    }
584                }
585            }
586            closedir(d);
587        } else {
588            result.append("couldn't open ");
589            result.append(buffer);
590            result.append("\n");
591        }
592
593#if defined(__arm__)
594        bool dumpMem = false;
595        for (size_t i = 0; i < args.size(); i++) {
596            if (args[i] == String16("-m")) {
597                dumpMem = true;
598            }
599        }
600        if (dumpMem) {
601            memStatus(fd, args);
602        }
603#endif
604    }
605    write(fd, result.string(), result.size());
606    return NO_ERROR;
607}
608
609void MediaPlayerService::removeClient(wp<Client> client)
610{
611    Mutex::Autolock lock(mLock);
612    mClients.remove(client);
613}
614
615MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
616        int32_t connId, const sp<IMediaPlayerClient>& client)
617{
618    LOGV("Client(%d) constructor", connId);
619    mPid = pid;
620    mConnId = connId;
621    mService = service;
622    mClient = client;
623    mLoop = false;
624    mStatus = NO_INIT;
625#if CALLBACK_ANTAGONIZER
626    LOGD("create Antagonizer");
627    mAntagonizer = new Antagonizer(notify, this);
628#endif
629}
630
631MediaPlayerService::Client::~Client()
632{
633    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
634    mAudioOutput.clear();
635    wp<Client> client(this);
636    disconnect();
637    mService->removeClient(client);
638}
639
640void MediaPlayerService::Client::disconnect()
641{
642    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
643    // grab local reference and clear main reference to prevent future
644    // access to object
645    sp<MediaPlayerBase> p;
646    {
647        Mutex::Autolock l(mLock);
648        p = mPlayer;
649    }
650    mClient.clear();
651
652    mPlayer.clear();
653
654    // clear the notification to prevent callbacks to dead client
655    // and reset the player. We assume the player will serialize
656    // access to itself if necessary.
657    if (p != 0) {
658        p->setNotifyCallback(0, 0);
659#if CALLBACK_ANTAGONIZER
660        LOGD("kill Antagonizer");
661        mAntagonizer->kill();
662#endif
663        p->reset();
664    }
665
666    IPCThreadState::self()->flushCommands();
667}
668
669static player_type getDefaultPlayerType() {
670#if BUILD_WITH_FULL_STAGEFRIGHT
671    char value[PROPERTY_VALUE_MAX];
672    if (property_get("media.stagefright.enable-player", value, NULL)
673        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
674        return STAGEFRIGHT_PLAYER;
675    }
676#endif
677
678    return PV_PLAYER;
679}
680
681// By default we use the VORBIS_PLAYER for vorbis playback (duh!),
682// but if the magic property is set we will use our new experimental
683// stagefright code instead.
684static player_type OverrideStagefrightForVorbis(player_type player) {
685    if (player != VORBIS_PLAYER) {
686        return player;
687    }
688
689#if BUILD_WITH_FULL_STAGEFRIGHT
690    char value[PROPERTY_VALUE_MAX];
691    if (property_get("media.stagefright.enable-vorbis", value, NULL)
692        && (!strcmp(value, "1") || !strcmp(value, "true"))) {
693        return STAGEFRIGHT_PLAYER;
694    }
695#endif
696
697    return VORBIS_PLAYER;
698}
699
700
701player_type getPlayerType(int fd, int64_t offset, int64_t length)
702{
703    char buf[20];
704    lseek(fd, offset, SEEK_SET);
705    read(fd, buf, sizeof(buf));
706    lseek(fd, offset, SEEK_SET);
707
708    long ident = *((long*)buf);
709
710    // Ogg vorbis?
711    if (ident == 0x5367674f) // 'OggS'
712        return OverrideStagefrightForVorbis(VORBIS_PLAYER);
713
714#ifndef NO_OPENCORE
715    if (ident == 0x75b22630) {
716        // The magic number for .asf files, i.e. wmv and wma content.
717        // These are not currently supported through stagefright.
718        return PV_PLAYER;
719    }
720#endif
721
722    // Some kind of MIDI?
723    EAS_DATA_HANDLE easdata;
724    if (EAS_Init(&easdata) == EAS_SUCCESS) {
725        EAS_FILE locator;
726        locator.path = NULL;
727        locator.fd = fd;
728        locator.offset = offset;
729        locator.length = length;
730        EAS_HANDLE  eashandle;
731        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
732            EAS_CloseFile(easdata, eashandle);
733            EAS_Shutdown(easdata);
734            return SONIVOX_PLAYER;
735        }
736        EAS_Shutdown(easdata);
737    }
738
739    return getDefaultPlayerType();
740}
741
742player_type getPlayerType(const char* url)
743{
744    if (TestPlayerStub::canBeUsed(url)) {
745        return TEST_PLAYER;
746    }
747
748    bool useStagefrightForHTTP = false;
749    char value[PROPERTY_VALUE_MAX];
750    if (property_get("media.stagefright.enable-http", value, NULL)
751        && (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
752        useStagefrightForHTTP = true;
753    }
754
755    // use MidiFile for MIDI extensions
756    int lenURL = strlen(url);
757    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
758        int len = strlen(FILE_EXTS[i].extension);
759        int start = lenURL - len;
760        if (start > 0) {
761            if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
762                if (FILE_EXTS[i].playertype == VORBIS_PLAYER
763                    && !strncasecmp(url, "http://", 7)
764                    && useStagefrightForHTTP) {
765                    return STAGEFRIGHT_PLAYER;
766                }
767                return OverrideStagefrightForVorbis(FILE_EXTS[i].playertype);
768            }
769        }
770    }
771
772    if (!strncasecmp(url, "http://", 7)) {
773        if (!useStagefrightForHTTP) {
774            return PV_PLAYER;
775        }
776    }
777
778    // Use PV_PLAYER for rtsp for now
779    if (!strncasecmp(url, "rtsp://", 7)) {
780        return PV_PLAYER;
781    }
782
783    return getDefaultPlayerType();
784}
785
786static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
787        notify_callback_f notifyFunc)
788{
789    sp<MediaPlayerBase> p;
790    switch (playerType) {
791#ifndef NO_OPENCORE
792        case PV_PLAYER:
793            LOGV(" create PVPlayer");
794            p = new PVPlayer();
795            break;
796#endif
797        case SONIVOX_PLAYER:
798            LOGV(" create MidiFile");
799            p = new MidiFile();
800            break;
801        case VORBIS_PLAYER:
802            LOGV(" create VorbisPlayer");
803            p = new VorbisPlayer();
804            break;
805#if BUILD_WITH_FULL_STAGEFRIGHT
806        case STAGEFRIGHT_PLAYER:
807            LOGV(" create StagefrightPlayer");
808            p = new StagefrightPlayer;
809            break;
810#endif
811        case TEST_PLAYER:
812            LOGV("Create Test Player stub");
813            p = new TestPlayerStub();
814            break;
815    }
816    if (p != NULL) {
817        if (p->initCheck() == NO_ERROR) {
818            p->setNotifyCallback(cookie, notifyFunc);
819        } else {
820            p.clear();
821        }
822    }
823    if (p == NULL) {
824        LOGE("Failed to create player object");
825    }
826    return p;
827}
828
829sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
830{
831    // determine if we have the right player type
832    sp<MediaPlayerBase> p = mPlayer;
833    if ((p != NULL) && (p->playerType() != playerType)) {
834        LOGV("delete player");
835        p.clear();
836    }
837    if (p == NULL) {
838        p = android::createPlayer(playerType, this, notify);
839    }
840    return p;
841}
842
843status_t MediaPlayerService::Client::setDataSource(
844        const char *url, const KeyedVector<String8, String8> *headers)
845{
846    LOGV("setDataSource(%s)", url);
847    if (url == NULL)
848        return UNKNOWN_ERROR;
849
850    if (strncmp(url, "content://", 10) == 0) {
851        // get a filedescriptor for the content Uri and
852        // pass it to the setDataSource(fd) method
853
854        String16 url16(url);
855        int fd = android::openContentProviderFile(url16);
856        if (fd < 0)
857        {
858            LOGE("Couldn't open fd for %s", url);
859            return UNKNOWN_ERROR;
860        }
861        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
862        close(fd);
863        return mStatus;
864    } else {
865        player_type playerType = getPlayerType(url);
866        LOGV("player type = %d", playerType);
867
868        // create the right type of player
869        sp<MediaPlayerBase> p = createPlayer(playerType);
870        if (p == NULL) return NO_INIT;
871
872        if (!p->hardwareOutput()) {
873            mAudioOutput = new AudioOutput();
874            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
875        }
876
877        // now set data source
878        LOGV(" setDataSource");
879        mStatus = p->setDataSource(url, headers);
880        if (mStatus == NO_ERROR) {
881            mPlayer = p;
882        } else {
883            LOGE("  error: %d", mStatus);
884        }
885        return mStatus;
886    }
887}
888
889status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
890{
891    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
892    struct stat sb;
893    int ret = fstat(fd, &sb);
894    if (ret != 0) {
895        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
896        return UNKNOWN_ERROR;
897    }
898
899    LOGV("st_dev  = %llu", sb.st_dev);
900    LOGV("st_mode = %u", sb.st_mode);
901    LOGV("st_uid  = %lu", sb.st_uid);
902    LOGV("st_gid  = %lu", sb.st_gid);
903    LOGV("st_size = %llu", sb.st_size);
904
905    if (offset >= sb.st_size) {
906        LOGE("offset error");
907        ::close(fd);
908        return UNKNOWN_ERROR;
909    }
910    if (offset + length > sb.st_size) {
911        length = sb.st_size - offset;
912        LOGV("calculated length = %lld", length);
913    }
914
915    player_type playerType = getPlayerType(fd, offset, length);
916    LOGV("player type = %d", playerType);
917
918    // create the right type of player
919    sp<MediaPlayerBase> p = createPlayer(playerType);
920    if (p == NULL) return NO_INIT;
921
922    if (!p->hardwareOutput()) {
923        mAudioOutput = new AudioOutput();
924        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
925    }
926
927    // now set data source
928    mStatus = p->setDataSource(fd, offset, length);
929    if (mStatus == NO_ERROR) mPlayer = p;
930    return mStatus;
931}
932
933status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
934{
935    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
936    sp<MediaPlayerBase> p = getPlayer();
937    if (p == 0) return UNKNOWN_ERROR;
938    return p->setVideoSurface(surface);
939}
940
941status_t MediaPlayerService::Client::invoke(const Parcel& request,
942                                            Parcel *reply)
943{
944    sp<MediaPlayerBase> p = getPlayer();
945    if (p == NULL) return UNKNOWN_ERROR;
946    return p->invoke(request, reply);
947}
948
949// This call doesn't need to access the native player.
950status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
951{
952    status_t status;
953    media::Metadata::Filter allow, drop;
954
955    if (unmarshallFilter(filter, &allow, &status) &&
956        unmarshallFilter(filter, &drop, &status)) {
957        Mutex::Autolock lock(mLock);
958
959        mMetadataAllow = allow;
960        mMetadataDrop = drop;
961    }
962    return status;
963}
964
965status_t MediaPlayerService::Client::getMetadata(
966        bool update_only, bool apply_filter, Parcel *reply)
967{
968    sp<MediaPlayerBase> player = getPlayer();
969    if (player == 0) return UNKNOWN_ERROR;
970
971    status_t status;
972    // Placeholder for the return code, updated by the caller.
973    reply->writeInt32(-1);
974
975    media::Metadata::Filter ids;
976
977    // We don't block notifications while we fetch the data. We clear
978    // mMetadataUpdated first so we don't lose notifications happening
979    // during the rest of this call.
980    {
981        Mutex::Autolock lock(mLock);
982        if (update_only) {
983            ids = mMetadataUpdated;
984        }
985        mMetadataUpdated.clear();
986    }
987
988    media::Metadata metadata(reply);
989
990    metadata.appendHeader();
991    status = player->getMetadata(ids, reply);
992
993    if (status != OK) {
994        metadata.resetParcel();
995        LOGE("getMetadata failed %d", status);
996        return status;
997    }
998
999    // FIXME: Implement filtering on the result. Not critical since
1000    // filtering takes place on the update notifications already. This
1001    // would be when all the metadata are fetch and a filter is set.
1002
1003    // Everything is fine, update the metadata length.
1004    metadata.updateLength();
1005    return OK;
1006}
1007
1008status_t MediaPlayerService::Client::suspend() {
1009    sp<MediaPlayerBase> p = getPlayer();
1010    if (p == 0) return UNKNOWN_ERROR;
1011
1012    return p->suspend();
1013}
1014
1015status_t MediaPlayerService::Client::resume() {
1016    sp<MediaPlayerBase> p = getPlayer();
1017    if (p == 0) return UNKNOWN_ERROR;
1018
1019    return p->resume();
1020}
1021
1022status_t MediaPlayerService::Client::prepareAsync()
1023{
1024    LOGV("[%d] prepareAsync", mConnId);
1025    sp<MediaPlayerBase> p = getPlayer();
1026    if (p == 0) return UNKNOWN_ERROR;
1027    status_t ret = p->prepareAsync();
1028#if CALLBACK_ANTAGONIZER
1029    LOGD("start Antagonizer");
1030    if (ret == NO_ERROR) mAntagonizer->start();
1031#endif
1032    return ret;
1033}
1034
1035status_t MediaPlayerService::Client::start()
1036{
1037    LOGV("[%d] start", mConnId);
1038    sp<MediaPlayerBase> p = getPlayer();
1039    if (p == 0) return UNKNOWN_ERROR;
1040    p->setLooping(mLoop);
1041    return p->start();
1042}
1043
1044status_t MediaPlayerService::Client::stop()
1045{
1046    LOGV("[%d] stop", mConnId);
1047    sp<MediaPlayerBase> p = getPlayer();
1048    if (p == 0) return UNKNOWN_ERROR;
1049    return p->stop();
1050}
1051
1052status_t MediaPlayerService::Client::pause()
1053{
1054    LOGV("[%d] pause", mConnId);
1055    sp<MediaPlayerBase> p = getPlayer();
1056    if (p == 0) return UNKNOWN_ERROR;
1057    return p->pause();
1058}
1059
1060status_t MediaPlayerService::Client::isPlaying(bool* state)
1061{
1062    *state = false;
1063    sp<MediaPlayerBase> p = getPlayer();
1064    if (p == 0) return UNKNOWN_ERROR;
1065    *state = p->isPlaying();
1066    LOGV("[%d] isPlaying: %d", mConnId, *state);
1067    return NO_ERROR;
1068}
1069
1070status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1071{
1072    LOGV("getCurrentPosition");
1073    sp<MediaPlayerBase> p = getPlayer();
1074    if (p == 0) return UNKNOWN_ERROR;
1075    status_t ret = p->getCurrentPosition(msec);
1076    if (ret == NO_ERROR) {
1077        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1078    } else {
1079        LOGE("getCurrentPosition returned %d", ret);
1080    }
1081    return ret;
1082}
1083
1084status_t MediaPlayerService::Client::getDuration(int *msec)
1085{
1086    LOGV("getDuration");
1087    sp<MediaPlayerBase> p = getPlayer();
1088    if (p == 0) return UNKNOWN_ERROR;
1089    status_t ret = p->getDuration(msec);
1090    if (ret == NO_ERROR) {
1091        LOGV("[%d] getDuration = %d", mConnId, *msec);
1092    } else {
1093        LOGE("getDuration returned %d", ret);
1094    }
1095    return ret;
1096}
1097
1098status_t MediaPlayerService::Client::seekTo(int msec)
1099{
1100    LOGV("[%d] seekTo(%d)", mConnId, msec);
1101    sp<MediaPlayerBase> p = getPlayer();
1102    if (p == 0) return UNKNOWN_ERROR;
1103    return p->seekTo(msec);
1104}
1105
1106status_t MediaPlayerService::Client::reset()
1107{
1108    LOGV("[%d] reset", mConnId);
1109    sp<MediaPlayerBase> p = getPlayer();
1110    if (p == 0) return UNKNOWN_ERROR;
1111    return p->reset();
1112}
1113
1114status_t MediaPlayerService::Client::setAudioStreamType(int type)
1115{
1116    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1117    // TODO: for hardware output, call player instead
1118    Mutex::Autolock l(mLock);
1119    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1120    return NO_ERROR;
1121}
1122
1123status_t MediaPlayerService::Client::setLooping(int loop)
1124{
1125    LOGV("[%d] setLooping(%d)", mConnId, loop);
1126    mLoop = loop;
1127    sp<MediaPlayerBase> p = getPlayer();
1128    if (p != 0) return p->setLooping(loop);
1129    return NO_ERROR;
1130}
1131
1132status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1133{
1134    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1135    // TODO: for hardware output, call player instead
1136    Mutex::Autolock l(mLock);
1137    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1138    return NO_ERROR;
1139}
1140
1141
1142void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1143{
1144    Client* client = static_cast<Client*>(cookie);
1145
1146    if (MEDIA_INFO == msg &&
1147        MEDIA_INFO_METADATA_UPDATE == ext1) {
1148        const media::Metadata::Type metadata_type = ext2;
1149
1150        if(client->shouldDropMetadata(metadata_type)) {
1151            return;
1152        }
1153
1154        // Update the list of metadata that have changed. getMetadata
1155        // also access mMetadataUpdated and clears it.
1156        client->addNewMetadataUpdate(metadata_type);
1157    }
1158    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1159    client->mClient->notify(msg, ext1, ext2);
1160}
1161
1162
1163bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1164{
1165    Mutex::Autolock lock(mLock);
1166
1167    if (findMetadata(mMetadataDrop, code)) {
1168        return true;
1169    }
1170
1171    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1172        return false;
1173    } else {
1174        return true;
1175    }
1176}
1177
1178
1179void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1180    Mutex::Autolock lock(mLock);
1181    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1182        mMetadataUpdated.add(metadata_type);
1183    }
1184}
1185
1186#if CALLBACK_ANTAGONIZER
1187const int Antagonizer::interval = 10000; // 10 msecs
1188
1189Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1190    mExit(false), mActive(false), mClient(client), mCb(cb)
1191{
1192    createThread(callbackThread, this);
1193}
1194
1195void Antagonizer::kill()
1196{
1197    Mutex::Autolock _l(mLock);
1198    mActive = false;
1199    mExit = true;
1200    mCondition.wait(mLock);
1201}
1202
1203int Antagonizer::callbackThread(void* user)
1204{
1205    LOGD("Antagonizer started");
1206    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1207    while (!p->mExit) {
1208        if (p->mActive) {
1209            LOGV("send event");
1210            p->mCb(p->mClient, 0, 0, 0);
1211        }
1212        usleep(interval);
1213    }
1214    Mutex::Autolock _l(p->mLock);
1215    p->mCondition.signal();
1216    LOGD("Antagonizer stopped");
1217    return 0;
1218}
1219#endif
1220
1221static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1222
1223sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1224{
1225    LOGV("decode(%s)", url);
1226    sp<MemoryBase> mem;
1227    sp<MediaPlayerBase> player;
1228
1229    // Protect our precious, precious DRMd ringtones by only allowing
1230    // decoding of http, but not filesystem paths or content Uris.
1231    // If the application wants to decode those, it should open a
1232    // filedescriptor for them and use that.
1233    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1234        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1235        return mem;
1236    }
1237
1238    player_type playerType = getPlayerType(url);
1239    LOGV("player type = %d", playerType);
1240
1241    // create the right type of player
1242    sp<AudioCache> cache = new AudioCache(url);
1243    player = android::createPlayer(playerType, cache.get(), cache->notify);
1244    if (player == NULL) goto Exit;
1245    if (player->hardwareOutput()) goto Exit;
1246
1247    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1248
1249    // set data source
1250    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1251
1252    LOGV("prepare");
1253    player->prepareAsync();
1254
1255    LOGV("wait for prepare");
1256    if (cache->wait() != NO_ERROR) goto Exit;
1257
1258    LOGV("start");
1259    player->start();
1260
1261    LOGV("wait for playback complete");
1262    if (cache->wait() != NO_ERROR) goto Exit;
1263
1264    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1265    *pSampleRate = cache->sampleRate();
1266    *pNumChannels = cache->channelCount();
1267    *pFormat = cache->format();
1268    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1269
1270Exit:
1271    if (player != 0) player->reset();
1272    return mem;
1273}
1274
1275sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1276{
1277    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1278    sp<MemoryBase> mem;
1279    sp<MediaPlayerBase> player;
1280
1281    player_type playerType = getPlayerType(fd, offset, length);
1282    LOGV("player type = %d", playerType);
1283
1284    // create the right type of player
1285    sp<AudioCache> cache = new AudioCache("decode_fd");
1286    player = android::createPlayer(playerType, cache.get(), cache->notify);
1287    if (player == NULL) goto Exit;
1288    if (player->hardwareOutput()) goto Exit;
1289
1290    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1291
1292    // set data source
1293    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1294
1295    LOGV("prepare");
1296    player->prepareAsync();
1297
1298    LOGV("wait for prepare");
1299    if (cache->wait() != NO_ERROR) goto Exit;
1300
1301    LOGV("start");
1302    player->start();
1303
1304    LOGV("wait for playback complete");
1305    if (cache->wait() != NO_ERROR) goto Exit;
1306
1307    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1308    *pSampleRate = cache->sampleRate();
1309    *pNumChannels = cache->channelCount();
1310    *pFormat = cache->format();
1311    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1312
1313Exit:
1314    if (player != 0) player->reset();
1315    ::close(fd);
1316    return mem;
1317}
1318
1319/*
1320 * Avert your eyes, ugly hack ahead.
1321 * The following is to support music visualizations.
1322 */
1323
1324static const int NUMVIZBUF = 32;
1325static const int VIZBUFFRAMES = 1024;
1326static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1327static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1328
1329static bool gotMem = false;
1330static sp<MemoryHeapBase> heap;
1331static sp<MemoryBase> mem[NUMVIZBUF];
1332static uint64_t endTime;
1333static uint64_t lastReadTime;
1334static uint64_t lastWriteTime;
1335static int writeIdx = 0;
1336
1337static void allocVizBufs() {
1338    if (!gotMem) {
1339        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1340        for (int i=0;i<NUMVIZBUF;i++) {
1341            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1342        }
1343        endTime = 0;
1344        gotMem = true;
1345    }
1346}
1347
1348
1349/*
1350 * Get a buffer of audio data that is about to be played.
1351 * We don't synchronize this because in practice the writer
1352 * is ahead of the reader, and even if we did happen to catch
1353 * a buffer while it's being written, it's just a visualization,
1354 * so no harm done.
1355 */
1356static sp<MemoryBase> getVizBuffer() {
1357
1358    allocVizBufs();
1359
1360    lastReadTime = uptimeMillis();
1361
1362    // if there is no recent buffer (yet), just return empty handed
1363    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1364        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1365        return NULL;
1366    }
1367
1368    int timedelta = endTime - lastReadTime;
1369    if (timedelta < 0) timedelta = 0;
1370    int framedelta = timedelta * 44100 / 1000;
1371    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1372    while (headIdx < 0) {
1373        headIdx += NUMVIZBUF;
1374    }
1375    return mem[headIdx];
1376}
1377
1378// Append the data to the vizualization buffer
1379static void makeVizBuffers(const char *data, int len, uint64_t time) {
1380
1381    allocVizBufs();
1382
1383    uint64_t startTime = time;
1384    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1385    int offset = writeIdx;
1386    int maxoff = heap->getSize() / 2; // in shorts
1387    short *base = (short*)heap->getBase();
1388    short *src = (short*)data;
1389    while (len > 0) {
1390
1391        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1392        // This should still be good enough for a visualization
1393        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1394        src += 2;
1395        len -= frameSize;
1396        if (offset >= maxoff) {
1397            offset = 0;
1398        }
1399    }
1400    writeIdx = offset;
1401    endTime = time + (len / frameSize) / 44;
1402    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1403}
1404
1405sp<IMemory> MediaPlayerService::snoop()
1406{
1407    sp<MemoryBase> mem = getVizBuffer();
1408    return mem;
1409}
1410
1411
1412#undef LOG_TAG
1413#define LOG_TAG "AudioSink"
1414MediaPlayerService::AudioOutput::AudioOutput()
1415    : mCallback(NULL),
1416      mCallbackCookie(NULL) {
1417    mTrack = 0;
1418    mStreamType = AudioSystem::MUSIC;
1419    mLeftVolume = 1.0;
1420    mRightVolume = 1.0;
1421    mLatency = 0;
1422    mMsecsPerFrame = 0;
1423    mNumFramesWritten = 0;
1424    setMinBufferCount();
1425}
1426
1427MediaPlayerService::AudioOutput::~AudioOutput()
1428{
1429    close();
1430}
1431
1432void MediaPlayerService::AudioOutput::setMinBufferCount()
1433{
1434    char value[PROPERTY_VALUE_MAX];
1435    if (property_get("ro.kernel.qemu", value, 0)) {
1436        mIsOnEmulator = true;
1437        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1438    }
1439}
1440
1441bool MediaPlayerService::AudioOutput::isOnEmulator()
1442{
1443    setMinBufferCount();
1444    return mIsOnEmulator;
1445}
1446
1447int MediaPlayerService::AudioOutput::getMinBufferCount()
1448{
1449    setMinBufferCount();
1450    return mMinBufferCount;
1451}
1452
1453ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1454{
1455    if (mTrack == 0) return NO_INIT;
1456    return mTrack->frameCount() * frameSize();
1457}
1458
1459ssize_t MediaPlayerService::AudioOutput::frameCount() const
1460{
1461    if (mTrack == 0) return NO_INIT;
1462    return mTrack->frameCount();
1463}
1464
1465ssize_t MediaPlayerService::AudioOutput::channelCount() const
1466{
1467    if (mTrack == 0) return NO_INIT;
1468    return mTrack->channelCount();
1469}
1470
1471ssize_t MediaPlayerService::AudioOutput::frameSize() const
1472{
1473    if (mTrack == 0) return NO_INIT;
1474    return mTrack->frameSize();
1475}
1476
1477uint32_t MediaPlayerService::AudioOutput::latency () const
1478{
1479    return mLatency;
1480}
1481
1482float MediaPlayerService::AudioOutput::msecsPerFrame() const
1483{
1484    return mMsecsPerFrame;
1485}
1486
1487status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1488{
1489    if (mTrack == 0) return NO_INIT;
1490    return mTrack->getPosition(position);
1491}
1492
1493status_t MediaPlayerService::AudioOutput::open(
1494        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1495        AudioCallback cb, void *cookie)
1496{
1497    mCallback = cb;
1498    mCallbackCookie = cookie;
1499
1500    // Check argument "bufferCount" against the mininum buffer count
1501    if (bufferCount < mMinBufferCount) {
1502        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1503        bufferCount = mMinBufferCount;
1504
1505    }
1506    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1507    if (mTrack) close();
1508    int afSampleRate;
1509    int afFrameCount;
1510    int frameCount;
1511
1512    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1513        return NO_INIT;
1514    }
1515    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1516        return NO_INIT;
1517    }
1518
1519    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1520
1521    AudioTrack *t;
1522    if (mCallback != NULL) {
1523        t = new AudioTrack(
1524                mStreamType,
1525                sampleRate,
1526                format,
1527                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1528                frameCount,
1529                0 /* flags */,
1530                CallbackWrapper,
1531                this);
1532    } else {
1533        t = new AudioTrack(
1534                mStreamType,
1535                sampleRate,
1536                format,
1537                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1538                frameCount);
1539    }
1540
1541    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1542        LOGE("Unable to create audio track");
1543        delete t;
1544        return NO_INIT;
1545    }
1546
1547    LOGV("setVolume");
1548    t->setVolume(mLeftVolume, mRightVolume);
1549    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1550    mLatency = t->latency();
1551    mTrack = t;
1552    return NO_ERROR;
1553}
1554
1555void MediaPlayerService::AudioOutput::start()
1556{
1557    LOGV("start");
1558    if (mTrack) {
1559        mTrack->setVolume(mLeftVolume, mRightVolume);
1560        mTrack->start();
1561        mTrack->getPosition(&mNumFramesWritten);
1562    }
1563}
1564
1565void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1566    // Only make visualization buffers if anyone recently requested visualization data
1567    uint64_t now = uptimeMillis();
1568    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1569        // Based on the current play counter, the number of frames written and
1570        // the current real time we can calculate the approximate real start
1571        // time of the buffer we're about to write.
1572        uint32_t pos;
1573        mTrack->getPosition(&pos);
1574
1575        // we're writing ahead by this many frames:
1576        int ahead = mNumFramesWritten - pos;
1577        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1578        // which is this many milliseconds, assuming 44100 Hz:
1579        ahead /= 44;
1580
1581        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1582        lastWriteTime = now;
1583    }
1584}
1585
1586
1587ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1588{
1589    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1590
1591    //LOGV("write(%p, %u)", buffer, size);
1592    if (mTrack) {
1593        snoopWrite(buffer, size);
1594        ssize_t ret = mTrack->write(buffer, size);
1595        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1596        return ret;
1597    }
1598    return NO_INIT;
1599}
1600
1601void MediaPlayerService::AudioOutput::stop()
1602{
1603    LOGV("stop");
1604    if (mTrack) mTrack->stop();
1605    lastWriteTime = 0;
1606}
1607
1608void MediaPlayerService::AudioOutput::flush()
1609{
1610    LOGV("flush");
1611    if (mTrack) mTrack->flush();
1612}
1613
1614void MediaPlayerService::AudioOutput::pause()
1615{
1616    LOGV("pause");
1617    if (mTrack) mTrack->pause();
1618    lastWriteTime = 0;
1619}
1620
1621void MediaPlayerService::AudioOutput::close()
1622{
1623    LOGV("close");
1624    delete mTrack;
1625    mTrack = 0;
1626}
1627
1628void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1629{
1630    LOGV("setVolume(%f, %f)", left, right);
1631    mLeftVolume = left;
1632    mRightVolume = right;
1633    if (mTrack) {
1634        mTrack->setVolume(left, right);
1635    }
1636}
1637
1638// static
1639void MediaPlayerService::AudioOutput::CallbackWrapper(
1640        int event, void *cookie, void *info) {
1641    //LOGV("callbackwrapper");
1642    if (event != AudioTrack::EVENT_MORE_DATA) {
1643        return;
1644    }
1645
1646    AudioOutput *me = (AudioOutput *)cookie;
1647    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1648
1649    size_t actualSize = (*me->mCallback)(
1650            me, buffer->raw, buffer->size, me->mCallbackCookie);
1651
1652    buffer->size = actualSize;
1653
1654    if (actualSize > 0) {
1655        me->snoopWrite(buffer->raw, actualSize);
1656    }
1657}
1658
1659#undef LOG_TAG
1660#define LOG_TAG "AudioCache"
1661MediaPlayerService::AudioCache::AudioCache(const char* name) :
1662    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1663    mError(NO_ERROR), mCommandComplete(false)
1664{
1665    // create ashmem heap
1666    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1667}
1668
1669uint32_t MediaPlayerService::AudioCache::latency () const
1670{
1671    return 0;
1672}
1673
1674float MediaPlayerService::AudioCache::msecsPerFrame() const
1675{
1676    return mMsecsPerFrame;
1677}
1678
1679status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1680{
1681    if (position == 0) return BAD_VALUE;
1682    *position = mSize;
1683    return NO_ERROR;
1684}
1685
1686////////////////////////////////////////////////////////////////////////////////
1687
1688struct CallbackThread : public Thread {
1689    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1690                   MediaPlayerBase::AudioSink::AudioCallback cb,
1691                   void *cookie);
1692
1693protected:
1694    virtual ~CallbackThread();
1695
1696    virtual bool threadLoop();
1697
1698private:
1699    wp<MediaPlayerBase::AudioSink> mSink;
1700    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1701    void *mCookie;
1702    void *mBuffer;
1703    size_t mBufferSize;
1704
1705    CallbackThread(const CallbackThread &);
1706    CallbackThread &operator=(const CallbackThread &);
1707};
1708
1709CallbackThread::CallbackThread(
1710        const wp<MediaPlayerBase::AudioSink> &sink,
1711        MediaPlayerBase::AudioSink::AudioCallback cb,
1712        void *cookie)
1713    : mSink(sink),
1714      mCallback(cb),
1715      mCookie(cookie),
1716      mBuffer(NULL),
1717      mBufferSize(0) {
1718}
1719
1720CallbackThread::~CallbackThread() {
1721    if (mBuffer) {
1722        free(mBuffer);
1723        mBuffer = NULL;
1724    }
1725}
1726
1727bool CallbackThread::threadLoop() {
1728    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1729    if (sink == NULL) {
1730        return false;
1731    }
1732
1733    if (mBuffer == NULL) {
1734        mBufferSize = sink->bufferSize();
1735        mBuffer = malloc(mBufferSize);
1736    }
1737
1738    size_t actualSize =
1739        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1740
1741    if (actualSize > 0) {
1742        sink->write(mBuffer, actualSize);
1743    }
1744
1745    return true;
1746}
1747
1748////////////////////////////////////////////////////////////////////////////////
1749
1750status_t MediaPlayerService::AudioCache::open(
1751        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1752        AudioCallback cb, void *cookie)
1753{
1754    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1755    if (mHeap->getHeapID() < 0) {
1756        return NO_INIT;
1757    }
1758
1759    mSampleRate = sampleRate;
1760    mChannelCount = (uint16_t)channelCount;
1761    mFormat = (uint16_t)format;
1762    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1763
1764    if (cb != NULL) {
1765        mCallbackThread = new CallbackThread(this, cb, cookie);
1766    }
1767    return NO_ERROR;
1768}
1769
1770void MediaPlayerService::AudioCache::start() {
1771    if (mCallbackThread != NULL) {
1772        mCallbackThread->run("AudioCache callback");
1773    }
1774}
1775
1776void MediaPlayerService::AudioCache::stop() {
1777    if (mCallbackThread != NULL) {
1778        mCallbackThread->requestExitAndWait();
1779    }
1780}
1781
1782ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1783{
1784    LOGV("write(%p, %u)", buffer, size);
1785    if ((buffer == 0) || (size == 0)) return size;
1786
1787    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1788    if (p == NULL) return NO_INIT;
1789    p += mSize;
1790    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1791    if (mSize + size > mHeap->getSize()) {
1792        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1793        size = mHeap->getSize() - mSize;
1794    }
1795    memcpy(p, buffer, size);
1796    mSize += size;
1797    return size;
1798}
1799
1800// call with lock held
1801status_t MediaPlayerService::AudioCache::wait()
1802{
1803    Mutex::Autolock lock(mLock);
1804    while (!mCommandComplete) {
1805        mSignal.wait(mLock);
1806    }
1807    mCommandComplete = false;
1808
1809    if (mError == NO_ERROR) {
1810        LOGV("wait - success");
1811    } else {
1812        LOGV("wait - error");
1813    }
1814    return mError;
1815}
1816
1817void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1818{
1819    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1820    AudioCache* p = static_cast<AudioCache*>(cookie);
1821
1822    // ignore buffering messages
1823    switch (msg)
1824    {
1825    case MEDIA_ERROR:
1826        LOGE("Error %d, %d occurred", ext1, ext2);
1827        p->mError = ext1;
1828        break;
1829    case MEDIA_PREPARED:
1830        LOGV("prepared");
1831        break;
1832    case MEDIA_PLAYBACK_COMPLETE:
1833        LOGV("playback complete");
1834        break;
1835    default:
1836        LOGV("ignored");
1837        return;
1838    }
1839
1840    // wake up thread
1841    Mutex::Autolock lock(p->mLock);
1842    p->mCommandComplete = true;
1843    p->mSignal.signal();
1844}
1845
1846} // namespace android
1847