MediaPlayerService.cpp revision b914122eb9cb54bbeae4ec03bfebb194aecdccbd 
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 <media/PVPlayer.h>
60#include "TestPlayerStub.h"
61#include "StagefrightPlayer.h"
62
63#include <OMX.h>
64
65/* desktop Linux needs a little help with gettid() */
66#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
67#define __KERNEL__
68# include <linux/unistd.h>
69#ifdef _syscall0
70_syscall0(pid_t,gettid)
71#else
72pid_t gettid() { return syscall(__NR_gettid);}
73#endif
74#undef __KERNEL__
75#endif
76
77namespace {
78using android::media::Metadata;
79using android::status_t;
80using android::OK;
81using android::BAD_VALUE;
82using android::NOT_ENOUGH_DATA;
83using android::Parcel;
84
85// Max number of entries in the filter.
86const int kMaxFilterSize = 64;  // I pulled that out of thin air.
87
88// FIXME: Move all the metadata related function in the Metadata.cpp
89
90
91// Unmarshall a filter from a Parcel.
92// Filter format in a parcel:
93//
94//  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
95// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
96// |                       number of entries (n)                   |
97// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
98// |                       metadata type 1                         |
99// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
100// |                       metadata type 2                         |
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102//  ....
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type n                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106//
107// @param p Parcel that should start with a filter.
108// @param[out] filter On exit contains the list of metadata type to be
109//                    filtered.
110// @param[out] status On exit contains the status code to be returned.
111// @return true if the parcel starts with a valid filter.
112bool unmarshallFilter(const Parcel& p,
113                      Metadata::Filter *filter,
114                      status_t *status)
115{
116    int32_t val;
117    if (p.readInt32(&val) != OK)
118    {
119        LOGE("Failed to read filter's length");
120        *status = NOT_ENOUGH_DATA;
121        return false;
122    }
123
124    if( val > kMaxFilterSize || val < 0)
125    {
126        LOGE("Invalid filter len %d", val);
127        *status = BAD_VALUE;
128        return false;
129    }
130
131    const size_t num = val;
132
133    filter->clear();
134    filter->setCapacity(num);
135
136    size_t size = num * sizeof(Metadata::Type);
137
138
139    if (p.dataAvail() < size)
140    {
141        LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
142        *status = NOT_ENOUGH_DATA;
143        return false;
144    }
145
146    const Metadata::Type *data =
147            static_cast<const Metadata::Type*>(p.readInplace(size));
148
149    if (NULL == data)
150    {
151        LOGE("Filter had no data");
152        *status = BAD_VALUE;
153        return false;
154    }
155
156    // TODO: The stl impl of vector would be more efficient here
157    // because it degenerates into a memcpy on pod types. Try to
158    // replace later or use stl::set.
159    for (size_t i = 0; i < num; ++i)
160    {
161        filter->add(*data);
162        ++data;
163    }
164    *status = OK;
165    return true;
166}
167
168// @param filter Of metadata type.
169// @param val To be searched.
170// @return true if a match was found.
171bool findMetadata(const Metadata::Filter& filter, const int32_t val)
172{
173    // Deal with empty and ANY right away
174    if (filter.isEmpty()) return false;
175    if (filter[0] == Metadata::kAny) return true;
176
177    return filter.indexOf(val) >= 0;
178}
179
180}  // anonymous namespace
181
182
183namespace android {
184
185// TODO: Temp hack until we can register players
186typedef struct {
187    const char *extension;
188    const player_type playertype;
189} extmap;
190extmap FILE_EXTS [] =  {
191        {".mid", SONIVOX_PLAYER},
192        {".midi", SONIVOX_PLAYER},
193        {".smf", SONIVOX_PLAYER},
194        {".xmf", SONIVOX_PLAYER},
195        {".imy", SONIVOX_PLAYER},
196        {".rtttl", SONIVOX_PLAYER},
197        {".rtx", SONIVOX_PLAYER},
198        {".ota", SONIVOX_PLAYER},
199#ifndef NO_OPENCORE
200        {".wma", PV_PLAYER},
201        {".wmv", PV_PLAYER},
202        {".asf", PV_PLAYER},
203#endif
204};
205
206// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
207/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
208/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
209
210void MediaPlayerService::instantiate() {
211    defaultServiceManager()->addService(
212            String16("media.player"), new MediaPlayerService());
213}
214
215MediaPlayerService::MediaPlayerService()
216{
217    LOGV("MediaPlayerService created");
218    mNextConnId = 1;
219}
220
221MediaPlayerService::~MediaPlayerService()
222{
223    LOGV("MediaPlayerService destroyed");
224}
225
226sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
227{
228    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
229    wp<MediaRecorderClient> w = recorder;
230    Mutex::Autolock lock(mLock);
231    mMediaRecorderClients.add(w);
232    LOGV("Create new media recorder client from pid %d", pid);
233    return recorder;
234}
235
236void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
237{
238    Mutex::Autolock lock(mLock);
239    mMediaRecorderClients.remove(client);
240    LOGV("Delete media recorder client");
241}
242
243sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
244{
245    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
246    LOGV("Create new media retriever from pid %d", pid);
247    return retriever;
248}
249
250sp<IMediaPlayer> MediaPlayerService::create(
251        pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
252        const KeyedVector<String8, String8> *headers, int audioSessionId)
253{
254    int32_t connId = android_atomic_inc(&mNextConnId);
255    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
256    LOGV("Create new client(%d) from pid %d, url=%s, connId=%d, audioSessionId=%d",
257            connId, pid, url, connId, audioSessionId);
258    if (NO_ERROR != c->setDataSource(url, headers))
259    {
260        c.clear();
261        return c;
262    }
263    wp<Client> w = c;
264    Mutex::Autolock lock(mLock);
265    mClients.add(w);
266    return c;
267}
268
269sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
270        int fd, int64_t offset, int64_t length, int audioSessionId)
271{
272    int32_t connId = android_atomic_inc(&mNextConnId);
273    sp<Client> c = new Client(this, pid, connId, client, audioSessionId);
274    LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld, audioSessionId=%d",
275            connId, pid, fd, offset, length, audioSessionId);
276    if (NO_ERROR != c->setDataSource(fd, offset, length)) {
277        c.clear();
278    } else {
279        wp<Client> w = c;
280        Mutex::Autolock lock(mLock);
281        mClients.add(w);
282    }
283    ::close(fd);
284    return c;
285}
286
287sp<IOMX> MediaPlayerService::getOMX() {
288    Mutex::Autolock autoLock(mLock);
289
290    if (mOMX.get() == NULL) {
291        mOMX = new OMX;
292    }
293
294    return mOMX;
295}
296
297status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
298{
299    const size_t SIZE = 256;
300    char buffer[SIZE];
301    String8 result;
302
303    result.append(" AudioCache\n");
304    if (mHeap != 0) {
305        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
306                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
307        result.append(buffer);
308    }
309    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
310            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
311    result.append(buffer);
312    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
313            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
314    result.append(buffer);
315    ::write(fd, result.string(), result.size());
316    return NO_ERROR;
317}
318
319status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
320{
321    const size_t SIZE = 256;
322    char buffer[SIZE];
323    String8 result;
324
325    result.append(" AudioOutput\n");
326    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
327            mStreamType, mLeftVolume, mRightVolume);
328    result.append(buffer);
329    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
330            mMsecsPerFrame, mLatency);
331    result.append(buffer);
332    ::write(fd, result.string(), result.size());
333    if (mTrack != 0) {
334        mTrack->dump(fd, args);
335    }
336    return NO_ERROR;
337}
338
339status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
340{
341    const size_t SIZE = 256;
342    char buffer[SIZE];
343    String8 result;
344    result.append(" Client\n");
345    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
346            mPid, mConnId, mStatus, mLoop?"true": "false");
347    result.append(buffer);
348    write(fd, result.string(), result.size());
349    if (mAudioOutput != 0) {
350        mAudioOutput->dump(fd, args);
351    }
352    write(fd, "\n", 1);
353    return NO_ERROR;
354}
355
356static int myTid() {
357#ifdef HAVE_GETTID
358    return gettid();
359#else
360    return getpid();
361#endif
362}
363
364#if defined(__arm__)
365extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
366        size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
367extern "C" void free_malloc_leak_info(uint8_t* info);
368
369// Use the String-class below instead of String8 to allocate all memory
370// beforehand and not reenter the heap while we are examining it...
371struct MyString8 {
372    static const size_t MAX_SIZE = 256 * 1024;
373
374    MyString8()
375        : mPtr((char *)malloc(MAX_SIZE)) {
376        *mPtr = '\0';
377    }
378
379    ~MyString8() {
380        free(mPtr);
381    }
382
383    void append(const char *s) {
384        strcat(mPtr, s);
385    }
386
387    const char *string() const {
388        return mPtr;
389    }
390
391    size_t size() const {
392        return strlen(mPtr);
393    }
394
395private:
396    char *mPtr;
397
398    MyString8(const MyString8 &);
399    MyString8 &operator=(const MyString8 &);
400};
401
402void memStatus(int fd, const Vector<String16>& args)
403{
404    const size_t SIZE = 256;
405    char buffer[SIZE];
406    MyString8 result;
407
408    typedef struct {
409        size_t size;
410        size_t dups;
411        intptr_t * backtrace;
412    } AllocEntry;
413
414    uint8_t *info = NULL;
415    size_t overallSize = 0;
416    size_t infoSize = 0;
417    size_t totalMemory = 0;
418    size_t backtraceSize = 0;
419
420    get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
421    if (info) {
422        uint8_t *ptr = info;
423        size_t count = overallSize / infoSize;
424
425        snprintf(buffer, SIZE, " Allocation count %i\n", count);
426        result.append(buffer);
427        snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
428        result.append(buffer);
429
430        AllocEntry * entries = new AllocEntry[count];
431
432        for (size_t i = 0; i < count; i++) {
433            // Each entry should be size_t, size_t, intptr_t[backtraceSize]
434            AllocEntry *e = &entries[i];
435
436            e->size = *reinterpret_cast<size_t *>(ptr);
437            ptr += sizeof(size_t);
438
439            e->dups = *reinterpret_cast<size_t *>(ptr);
440            ptr += sizeof(size_t);
441
442            e->backtrace = reinterpret_cast<intptr_t *>(ptr);
443            ptr += sizeof(intptr_t) * backtraceSize;
444        }
445
446        // Now we need to sort the entries.  They come sorted by size but
447        // not by stack trace which causes problems using diff.
448        bool moved;
449        do {
450            moved = false;
451            for (size_t i = 0; i < (count - 1); i++) {
452                AllocEntry *e1 = &entries[i];
453                AllocEntry *e2 = &entries[i+1];
454
455                bool swap = e1->size < e2->size;
456                if (e1->size == e2->size) {
457                    for(size_t j = 0; j < backtraceSize; j++) {
458                        if (e1->backtrace[j] == e2->backtrace[j]) {
459                            continue;
460                        }
461                        swap = e1->backtrace[j] < e2->backtrace[j];
462                        break;
463                    }
464                }
465                if (swap) {
466                    AllocEntry t = entries[i];
467                    entries[i] = entries[i+1];
468                    entries[i+1] = t;
469                    moved = true;
470                }
471            }
472        } while (moved);
473
474        for (size_t i = 0; i < count; i++) {
475            AllocEntry *e = &entries[i];
476
477            snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
478            result.append(buffer);
479            for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
480                if (ct) {
481                    result.append(", ");
482                }
483                snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
484                result.append(buffer);
485            }
486            result.append("\n");
487        }
488
489        delete[] entries;
490        free_malloc_leak_info(info);
491    }
492
493    write(fd, result.string(), result.size());
494}
495#endif
496
497status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
498{
499    const size_t SIZE = 256;
500    char buffer[SIZE];
501    String8 result;
502    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
503        snprintf(buffer, SIZE, "Permission Denial: "
504                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
505                IPCThreadState::self()->getCallingPid(),
506                IPCThreadState::self()->getCallingUid());
507        result.append(buffer);
508    } else {
509        Mutex::Autolock lock(mLock);
510        for (int i = 0, n = mClients.size(); i < n; ++i) {
511            sp<Client> c = mClients[i].promote();
512            if (c != 0) c->dump(fd, args);
513        }
514        if (mMediaRecorderClients.size() == 0) {
515                result.append(" No media recorder client\n\n");
516        } else {
517            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
518                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
519                snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
520                result.append(buffer);
521                write(fd, result.string(), result.size());
522                result = "\n";
523                c->dump(fd, args);
524            }
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, int audioSessionId)
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    mAudioSessionId = audioSessionId;
626
627#if CALLBACK_ANTAGONIZER
628    LOGD("create Antagonizer");
629    mAntagonizer = new Antagonizer(notify, this);
630#endif
631}
632
633MediaPlayerService::Client::~Client()
634{
635    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
636    mAudioOutput.clear();
637    wp<Client> client(this);
638    disconnect();
639    mService->removeClient(client);
640}
641
642void MediaPlayerService::Client::disconnect()
643{
644    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
645    // grab local reference and clear main reference to prevent future
646    // access to object
647    sp<MediaPlayerBase> p;
648    {
649        Mutex::Autolock l(mLock);
650        p = mPlayer;
651    }
652    mClient.clear();
653
654    mPlayer.clear();
655
656    // clear the notification to prevent callbacks to dead client
657    // and reset the player. We assume the player will serialize
658    // access to itself if necessary.
659    if (p != 0) {
660        p->setNotifyCallback(0, 0);
661#if CALLBACK_ANTAGONIZER
662        LOGD("kill Antagonizer");
663        mAntagonizer->kill();
664#endif
665        p->reset();
666    }
667
668    IPCThreadState::self()->flushCommands();
669}
670
671static player_type getDefaultPlayerType() {
672    return STAGEFRIGHT_PLAYER;
673}
674
675player_type getPlayerType(int fd, int64_t offset, int64_t length)
676{
677    char buf[20];
678    lseek(fd, offset, SEEK_SET);
679    read(fd, buf, sizeof(buf));
680    lseek(fd, offset, SEEK_SET);
681
682    long ident = *((long*)buf);
683
684    // Ogg vorbis?
685    if (ident == 0x5367674f) // 'OggS'
686        return STAGEFRIGHT_PLAYER;
687
688#ifndef NO_OPENCORE
689    if (ident == 0x75b22630) {
690        // The magic number for .asf files, i.e. wmv and wma content.
691        // These are not currently supported through stagefright.
692        return PV_PLAYER;
693    }
694#endif
695
696    // Some kind of MIDI?
697    EAS_DATA_HANDLE easdata;
698    if (EAS_Init(&easdata) == EAS_SUCCESS) {
699        EAS_FILE locator;
700        locator.path = NULL;
701        locator.fd = fd;
702        locator.offset = offset;
703        locator.length = length;
704        EAS_HANDLE  eashandle;
705        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
706            EAS_CloseFile(easdata, eashandle);
707            EAS_Shutdown(easdata);
708            return SONIVOX_PLAYER;
709        }
710        EAS_Shutdown(easdata);
711    }
712
713    return getDefaultPlayerType();
714}
715
716player_type getPlayerType(const char* url)
717{
718    if (TestPlayerStub::canBeUsed(url)) {
719        return TEST_PLAYER;
720    }
721
722    // use MidiFile for MIDI extensions
723    int lenURL = strlen(url);
724    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
725        int len = strlen(FILE_EXTS[i].extension);
726        int start = lenURL - len;
727        if (start > 0) {
728            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
729                return FILE_EXTS[i].playertype;
730            }
731        }
732    }
733
734    if (!strncasecmp(url, "rtsp://", 7)) {
735        char value[PROPERTY_VALUE_MAX];
736        if (!property_get("media.stagefright.enable-rtsp", value, NULL)
737            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
738            // For now, we're going to use PV for rtsp-based playback
739            // by default until we can clear up a few more issues.
740            return PV_PLAYER;
741        }
742    }
743
744    return getDefaultPlayerType();
745}
746
747static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
748        notify_callback_f notifyFunc)
749{
750    sp<MediaPlayerBase> p;
751    switch (playerType) {
752#ifndef NO_OPENCORE
753        case PV_PLAYER:
754            LOGV(" create PVPlayer");
755            p = new PVPlayer();
756            break;
757#endif
758        case SONIVOX_PLAYER:
759            LOGV(" create MidiFile");
760            p = new MidiFile();
761            break;
762        case STAGEFRIGHT_PLAYER:
763            LOGV(" create StagefrightPlayer");
764            p = new StagefrightPlayer;
765            break;
766        case TEST_PLAYER:
767            LOGV("Create Test Player stub");
768            p = new TestPlayerStub();
769            break;
770    }
771    if (p != NULL) {
772        if (p->initCheck() == NO_ERROR) {
773            p->setNotifyCallback(cookie, notifyFunc);
774        } else {
775            p.clear();
776        }
777    }
778    if (p == NULL) {
779        LOGE("Failed to create player object");
780    }
781    return p;
782}
783
784sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
785{
786    // determine if we have the right player type
787    sp<MediaPlayerBase> p = mPlayer;
788    if ((p != NULL) && (p->playerType() != playerType)) {
789        LOGV("delete player");
790        p.clear();
791    }
792    if (p == NULL) {
793        p = android::createPlayer(playerType, this, notify);
794    }
795    return p;
796}
797
798status_t MediaPlayerService::Client::setDataSource(
799        const char *url, const KeyedVector<String8, String8> *headers)
800{
801    LOGV("setDataSource(%s)", url);
802    if (url == NULL)
803        return UNKNOWN_ERROR;
804
805    if (strncmp(url, "content://", 10) == 0) {
806        // get a filedescriptor for the content Uri and
807        // pass it to the setDataSource(fd) method
808
809        String16 url16(url);
810        int fd = android::openContentProviderFile(url16);
811        if (fd < 0)
812        {
813            LOGE("Couldn't open fd for %s", url);
814            return UNKNOWN_ERROR;
815        }
816        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
817        close(fd);
818        return mStatus;
819    } else {
820        player_type playerType = getPlayerType(url);
821        LOGV("player type = %d", playerType);
822
823        // create the right type of player
824        sp<MediaPlayerBase> p = createPlayer(playerType);
825        if (p == NULL) return NO_INIT;
826
827        if (!p->hardwareOutput()) {
828            mAudioOutput = new AudioOutput(mAudioSessionId);
829            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
830        }
831
832        // now set data source
833        LOGV(" setDataSource");
834        mStatus = p->setDataSource(url, headers);
835        if (mStatus == NO_ERROR) {
836            mPlayer = p;
837        } else {
838            LOGE("  error: %d", mStatus);
839        }
840        return mStatus;
841    }
842}
843
844status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
845{
846    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
847    struct stat sb;
848    int ret = fstat(fd, &sb);
849    if (ret != 0) {
850        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
851        return UNKNOWN_ERROR;
852    }
853
854    LOGV("st_dev  = %llu", sb.st_dev);
855    LOGV("st_mode = %u", sb.st_mode);
856    LOGV("st_uid  = %lu", sb.st_uid);
857    LOGV("st_gid  = %lu", sb.st_gid);
858    LOGV("st_size = %llu", sb.st_size);
859
860    if (offset >= sb.st_size) {
861        LOGE("offset error");
862        ::close(fd);
863        return UNKNOWN_ERROR;
864    }
865    if (offset + length > sb.st_size) {
866        length = sb.st_size - offset;
867        LOGV("calculated length = %lld", length);
868    }
869
870    player_type playerType = getPlayerType(fd, offset, length);
871    LOGV("player type = %d", playerType);
872
873    // create the right type of player
874    sp<MediaPlayerBase> p = createPlayer(playerType);
875    if (p == NULL) return NO_INIT;
876
877    if (!p->hardwareOutput()) {
878        mAudioOutput = new AudioOutput(mAudioSessionId);
879        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
880    }
881
882    // now set data source
883    mStatus = p->setDataSource(fd, offset, length);
884    if (mStatus == NO_ERROR) mPlayer = p;
885    return mStatus;
886}
887
888status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
889{
890    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
891    sp<MediaPlayerBase> p = getPlayer();
892    if (p == 0) return UNKNOWN_ERROR;
893    return p->setVideoSurface(surface);
894}
895
896status_t MediaPlayerService::Client::invoke(const Parcel& request,
897                                            Parcel *reply)
898{
899    sp<MediaPlayerBase> p = getPlayer();
900    if (p == NULL) return UNKNOWN_ERROR;
901    return p->invoke(request, reply);
902}
903
904// This call doesn't need to access the native player.
905status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
906{
907    status_t status;
908    media::Metadata::Filter allow, drop;
909
910    if (unmarshallFilter(filter, &allow, &status) &&
911        unmarshallFilter(filter, &drop, &status)) {
912        Mutex::Autolock lock(mLock);
913
914        mMetadataAllow = allow;
915        mMetadataDrop = drop;
916    }
917    return status;
918}
919
920status_t MediaPlayerService::Client::getMetadata(
921        bool update_only, bool apply_filter, Parcel *reply)
922{
923    sp<MediaPlayerBase> player = getPlayer();
924    if (player == 0) return UNKNOWN_ERROR;
925
926    status_t status;
927    // Placeholder for the return code, updated by the caller.
928    reply->writeInt32(-1);
929
930    media::Metadata::Filter ids;
931
932    // We don't block notifications while we fetch the data. We clear
933    // mMetadataUpdated first so we don't lose notifications happening
934    // during the rest of this call.
935    {
936        Mutex::Autolock lock(mLock);
937        if (update_only) {
938            ids = mMetadataUpdated;
939        }
940        mMetadataUpdated.clear();
941    }
942
943    media::Metadata metadata(reply);
944
945    metadata.appendHeader();
946    status = player->getMetadata(ids, reply);
947
948    if (status != OK) {
949        metadata.resetParcel();
950        LOGE("getMetadata failed %d", status);
951        return status;
952    }
953
954    // FIXME: Implement filtering on the result. Not critical since
955    // filtering takes place on the update notifications already. This
956    // would be when all the metadata are fetch and a filter is set.
957
958    // Everything is fine, update the metadata length.
959    metadata.updateLength();
960    return OK;
961}
962
963status_t MediaPlayerService::Client::suspend() {
964    sp<MediaPlayerBase> p = getPlayer();
965    if (p == 0) return UNKNOWN_ERROR;
966
967    return p->suspend();
968}
969
970status_t MediaPlayerService::Client::resume() {
971    sp<MediaPlayerBase> p = getPlayer();
972    if (p == 0) return UNKNOWN_ERROR;
973
974    return p->resume();
975}
976
977status_t MediaPlayerService::Client::prepareAsync()
978{
979    LOGV("[%d] prepareAsync", mConnId);
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    status_t ret = p->prepareAsync();
983#if CALLBACK_ANTAGONIZER
984    LOGD("start Antagonizer");
985    if (ret == NO_ERROR) mAntagonizer->start();
986#endif
987    return ret;
988}
989
990status_t MediaPlayerService::Client::start()
991{
992    LOGV("[%d] start", mConnId);
993    sp<MediaPlayerBase> p = getPlayer();
994    if (p == 0) return UNKNOWN_ERROR;
995    p->setLooping(mLoop);
996    return p->start();
997}
998
999status_t MediaPlayerService::Client::stop()
1000{
1001    LOGV("[%d] stop", mConnId);
1002    sp<MediaPlayerBase> p = getPlayer();
1003    if (p == 0) return UNKNOWN_ERROR;
1004    return p->stop();
1005}
1006
1007status_t MediaPlayerService::Client::pause()
1008{
1009    LOGV("[%d] pause", mConnId);
1010    sp<MediaPlayerBase> p = getPlayer();
1011    if (p == 0) return UNKNOWN_ERROR;
1012    return p->pause();
1013}
1014
1015status_t MediaPlayerService::Client::isPlaying(bool* state)
1016{
1017    *state = false;
1018    sp<MediaPlayerBase> p = getPlayer();
1019    if (p == 0) return UNKNOWN_ERROR;
1020    *state = p->isPlaying();
1021    LOGV("[%d] isPlaying: %d", mConnId, *state);
1022    return NO_ERROR;
1023}
1024
1025status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1026{
1027    LOGV("getCurrentPosition");
1028    sp<MediaPlayerBase> p = getPlayer();
1029    if (p == 0) return UNKNOWN_ERROR;
1030    status_t ret = p->getCurrentPosition(msec);
1031    if (ret == NO_ERROR) {
1032        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1033    } else {
1034        LOGE("getCurrentPosition returned %d", ret);
1035    }
1036    return ret;
1037}
1038
1039status_t MediaPlayerService::Client::getDuration(int *msec)
1040{
1041    LOGV("getDuration");
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    status_t ret = p->getDuration(msec);
1045    if (ret == NO_ERROR) {
1046        LOGV("[%d] getDuration = %d", mConnId, *msec);
1047    } else {
1048        LOGE("getDuration returned %d", ret);
1049    }
1050    return ret;
1051}
1052
1053status_t MediaPlayerService::Client::seekTo(int msec)
1054{
1055    LOGV("[%d] seekTo(%d)", mConnId, msec);
1056    sp<MediaPlayerBase> p = getPlayer();
1057    if (p == 0) return UNKNOWN_ERROR;
1058    return p->seekTo(msec);
1059}
1060
1061status_t MediaPlayerService::Client::reset()
1062{
1063    LOGV("[%d] reset", mConnId);
1064    sp<MediaPlayerBase> p = getPlayer();
1065    if (p == 0) return UNKNOWN_ERROR;
1066    return p->reset();
1067}
1068
1069status_t MediaPlayerService::Client::setAudioStreamType(int type)
1070{
1071    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1072    // TODO: for hardware output, call player instead
1073    Mutex::Autolock l(mLock);
1074    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1075    return NO_ERROR;
1076}
1077
1078status_t MediaPlayerService::Client::setLooping(int loop)
1079{
1080    LOGV("[%d] setLooping(%d)", mConnId, loop);
1081    mLoop = loop;
1082    sp<MediaPlayerBase> p = getPlayer();
1083    if (p != 0) return p->setLooping(loop);
1084    return NO_ERROR;
1085}
1086
1087status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1088{
1089    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1090    // TODO: for hardware output, call player instead
1091    Mutex::Autolock l(mLock);
1092    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1093    return NO_ERROR;
1094}
1095
1096
1097void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1098{
1099    Client* client = static_cast<Client*>(cookie);
1100
1101    if (MEDIA_INFO == msg &&
1102        MEDIA_INFO_METADATA_UPDATE == ext1) {
1103        const media::Metadata::Type metadata_type = ext2;
1104
1105        if(client->shouldDropMetadata(metadata_type)) {
1106            return;
1107        }
1108
1109        // Update the list of metadata that have changed. getMetadata
1110        // also access mMetadataUpdated and clears it.
1111        client->addNewMetadataUpdate(metadata_type);
1112    }
1113    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1114    client->mClient->notify(msg, ext1, ext2);
1115}
1116
1117
1118bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1119{
1120    Mutex::Autolock lock(mLock);
1121
1122    if (findMetadata(mMetadataDrop, code)) {
1123        return true;
1124    }
1125
1126    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1127        return false;
1128    } else {
1129        return true;
1130    }
1131}
1132
1133
1134void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1135    Mutex::Autolock lock(mLock);
1136    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1137        mMetadataUpdated.add(metadata_type);
1138    }
1139}
1140
1141#if CALLBACK_ANTAGONIZER
1142const int Antagonizer::interval = 10000; // 10 msecs
1143
1144Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1145    mExit(false), mActive(false), mClient(client), mCb(cb)
1146{
1147    createThread(callbackThread, this);
1148}
1149
1150void Antagonizer::kill()
1151{
1152    Mutex::Autolock _l(mLock);
1153    mActive = false;
1154    mExit = true;
1155    mCondition.wait(mLock);
1156}
1157
1158int Antagonizer::callbackThread(void* user)
1159{
1160    LOGD("Antagonizer started");
1161    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1162    while (!p->mExit) {
1163        if (p->mActive) {
1164            LOGV("send event");
1165            p->mCb(p->mClient, 0, 0, 0);
1166        }
1167        usleep(interval);
1168    }
1169    Mutex::Autolock _l(p->mLock);
1170    p->mCondition.signal();
1171    LOGD("Antagonizer stopped");
1172    return 0;
1173}
1174#endif
1175
1176static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1177
1178sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1179{
1180    LOGV("decode(%s)", url);
1181    sp<MemoryBase> mem;
1182    sp<MediaPlayerBase> player;
1183
1184    // Protect our precious, precious DRMd ringtones by only allowing
1185    // decoding of http, but not filesystem paths or content Uris.
1186    // If the application wants to decode those, it should open a
1187    // filedescriptor for them and use that.
1188    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1189        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1190        return mem;
1191    }
1192
1193    player_type playerType = getPlayerType(url);
1194    LOGV("player type = %d", playerType);
1195
1196    // create the right type of player
1197    sp<AudioCache> cache = new AudioCache(url);
1198    player = android::createPlayer(playerType, cache.get(), cache->notify);
1199    if (player == NULL) goto Exit;
1200    if (player->hardwareOutput()) goto Exit;
1201
1202    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1203
1204    // set data source
1205    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1206
1207    LOGV("prepare");
1208    player->prepareAsync();
1209
1210    LOGV("wait for prepare");
1211    if (cache->wait() != NO_ERROR) goto Exit;
1212
1213    LOGV("start");
1214    player->start();
1215
1216    LOGV("wait for playback complete");
1217    if (cache->wait() != NO_ERROR) goto Exit;
1218
1219    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1220    *pSampleRate = cache->sampleRate();
1221    *pNumChannels = cache->channelCount();
1222    *pFormat = cache->format();
1223    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1224
1225Exit:
1226    if (player != 0) player->reset();
1227    return mem;
1228}
1229
1230sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1231{
1232    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1233    sp<MemoryBase> mem;
1234    sp<MediaPlayerBase> player;
1235
1236    player_type playerType = getPlayerType(fd, offset, length);
1237    LOGV("player type = %d", playerType);
1238
1239    // create the right type of player
1240    sp<AudioCache> cache = new AudioCache("decode_fd");
1241    player = android::createPlayer(playerType, cache.get(), cache->notify);
1242    if (player == NULL) goto Exit;
1243    if (player->hardwareOutput()) goto Exit;
1244
1245    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1246
1247    // set data source
1248    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1249
1250    LOGV("prepare");
1251    player->prepareAsync();
1252
1253    LOGV("wait for prepare");
1254    if (cache->wait() != NO_ERROR) goto Exit;
1255
1256    LOGV("start");
1257    player->start();
1258
1259    LOGV("wait for playback complete");
1260    if (cache->wait() != NO_ERROR) goto Exit;
1261
1262    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1263    *pSampleRate = cache->sampleRate();
1264    *pNumChannels = cache->channelCount();
1265    *pFormat = cache->format();
1266    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1267
1268Exit:
1269    if (player != 0) player->reset();
1270    ::close(fd);
1271    return mem;
1272}
1273
1274
1275#undef LOG_TAG
1276#define LOG_TAG "AudioSink"
1277MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1278    : mCallback(NULL),
1279      mCallbackCookie(NULL),
1280      mSessionId(sessionId) {
1281    LOGV("AudioOutput(%d)", sessionId);
1282    mTrack = 0;
1283    mStreamType = AudioSystem::MUSIC;
1284    mLeftVolume = 1.0;
1285    mRightVolume = 1.0;
1286    mLatency = 0;
1287    mMsecsPerFrame = 0;
1288    setMinBufferCount();
1289}
1290
1291MediaPlayerService::AudioOutput::~AudioOutput()
1292{
1293    close();
1294}
1295
1296void MediaPlayerService::AudioOutput::setMinBufferCount()
1297{
1298    char value[PROPERTY_VALUE_MAX];
1299    if (property_get("ro.kernel.qemu", value, 0)) {
1300        mIsOnEmulator = true;
1301        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1302    }
1303}
1304
1305bool MediaPlayerService::AudioOutput::isOnEmulator()
1306{
1307    setMinBufferCount();
1308    return mIsOnEmulator;
1309}
1310
1311int MediaPlayerService::AudioOutput::getMinBufferCount()
1312{
1313    setMinBufferCount();
1314    return mMinBufferCount;
1315}
1316
1317ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1318{
1319    if (mTrack == 0) return NO_INIT;
1320    return mTrack->frameCount() * frameSize();
1321}
1322
1323ssize_t MediaPlayerService::AudioOutput::frameCount() const
1324{
1325    if (mTrack == 0) return NO_INIT;
1326    return mTrack->frameCount();
1327}
1328
1329ssize_t MediaPlayerService::AudioOutput::channelCount() const
1330{
1331    if (mTrack == 0) return NO_INIT;
1332    return mTrack->channelCount();
1333}
1334
1335ssize_t MediaPlayerService::AudioOutput::frameSize() const
1336{
1337    if (mTrack == 0) return NO_INIT;
1338    return mTrack->frameSize();
1339}
1340
1341uint32_t MediaPlayerService::AudioOutput::latency () const
1342{
1343    return mLatency;
1344}
1345
1346float MediaPlayerService::AudioOutput::msecsPerFrame() const
1347{
1348    return mMsecsPerFrame;
1349}
1350
1351status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1352{
1353    if (mTrack == 0) return NO_INIT;
1354    return mTrack->getPosition(position);
1355}
1356
1357status_t MediaPlayerService::AudioOutput::open(
1358        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1359        AudioCallback cb, void *cookie)
1360{
1361    mCallback = cb;
1362    mCallbackCookie = cookie;
1363
1364    // Check argument "bufferCount" against the mininum buffer count
1365    if (bufferCount < mMinBufferCount) {
1366        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1367        bufferCount = mMinBufferCount;
1368
1369    }
1370    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1371    if (mTrack) close();
1372    int afSampleRate;
1373    int afFrameCount;
1374    int frameCount;
1375
1376    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1377        return NO_INIT;
1378    }
1379    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1380        return NO_INIT;
1381    }
1382
1383    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1384
1385    AudioTrack *t;
1386    if (mCallback != NULL) {
1387        t = new AudioTrack(
1388                mStreamType,
1389                sampleRate,
1390                format,
1391                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1392                frameCount,
1393                0 /* flags */,
1394                CallbackWrapper,
1395                this,
1396                0,
1397                mSessionId);
1398    } else {
1399        t = new AudioTrack(
1400                mStreamType,
1401                sampleRate,
1402                format,
1403                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1404                frameCount,
1405                0,
1406                NULL,
1407                NULL,
1408                0,
1409                mSessionId);
1410    }
1411
1412    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1413        LOGE("Unable to create audio track");
1414        delete t;
1415        return NO_INIT;
1416    }
1417
1418    LOGV("setVolume");
1419    t->setVolume(mLeftVolume, mRightVolume);
1420    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1421    mLatency = t->latency();
1422    mTrack = t;
1423    return NO_ERROR;
1424}
1425
1426void MediaPlayerService::AudioOutput::start()
1427{
1428    LOGV("start");
1429    if (mTrack) {
1430        mTrack->setVolume(mLeftVolume, mRightVolume);
1431        mTrack->start();
1432    }
1433}
1434
1435
1436
1437ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1438{
1439    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1440
1441    //LOGV("write(%p, %u)", buffer, size);
1442    if (mTrack) {
1443        ssize_t ret = mTrack->write(buffer, size);
1444        return ret;
1445    }
1446    return NO_INIT;
1447}
1448
1449void MediaPlayerService::AudioOutput::stop()
1450{
1451    LOGV("stop");
1452    if (mTrack) mTrack->stop();
1453}
1454
1455void MediaPlayerService::AudioOutput::flush()
1456{
1457    LOGV("flush");
1458    if (mTrack) mTrack->flush();
1459}
1460
1461void MediaPlayerService::AudioOutput::pause()
1462{
1463    LOGV("pause");
1464    if (mTrack) mTrack->pause();
1465}
1466
1467void MediaPlayerService::AudioOutput::close()
1468{
1469    LOGV("close");
1470    delete mTrack;
1471    mTrack = 0;
1472}
1473
1474void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1475{
1476    LOGV("setVolume(%f, %f)", left, right);
1477    mLeftVolume = left;
1478    mRightVolume = right;
1479    if (mTrack) {
1480        mTrack->setVolume(left, right);
1481    }
1482}
1483
1484// static
1485void MediaPlayerService::AudioOutput::CallbackWrapper(
1486        int event, void *cookie, void *info) {
1487    //LOGV("callbackwrapper");
1488    if (event != AudioTrack::EVENT_MORE_DATA) {
1489        return;
1490    }
1491
1492    AudioOutput *me = (AudioOutput *)cookie;
1493    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1494
1495    size_t actualSize = (*me->mCallback)(
1496            me, buffer->raw, buffer->size, me->mCallbackCookie);
1497
1498    buffer->size = actualSize;
1499
1500}
1501
1502#undef LOG_TAG
1503#define LOG_TAG "AudioCache"
1504MediaPlayerService::AudioCache::AudioCache(const char* name) :
1505    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1506    mError(NO_ERROR), mCommandComplete(false)
1507{
1508    // create ashmem heap
1509    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1510}
1511
1512uint32_t MediaPlayerService::AudioCache::latency () const
1513{
1514    return 0;
1515}
1516
1517float MediaPlayerService::AudioCache::msecsPerFrame() const
1518{
1519    return mMsecsPerFrame;
1520}
1521
1522status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1523{
1524    if (position == 0) return BAD_VALUE;
1525    *position = mSize;
1526    return NO_ERROR;
1527}
1528
1529////////////////////////////////////////////////////////////////////////////////
1530
1531struct CallbackThread : public Thread {
1532    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1533                   MediaPlayerBase::AudioSink::AudioCallback cb,
1534                   void *cookie);
1535
1536protected:
1537    virtual ~CallbackThread();
1538
1539    virtual bool threadLoop();
1540
1541private:
1542    wp<MediaPlayerBase::AudioSink> mSink;
1543    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1544    void *mCookie;
1545    void *mBuffer;
1546    size_t mBufferSize;
1547
1548    CallbackThread(const CallbackThread &);
1549    CallbackThread &operator=(const CallbackThread &);
1550};
1551
1552CallbackThread::CallbackThread(
1553        const wp<MediaPlayerBase::AudioSink> &sink,
1554        MediaPlayerBase::AudioSink::AudioCallback cb,
1555        void *cookie)
1556    : mSink(sink),
1557      mCallback(cb),
1558      mCookie(cookie),
1559      mBuffer(NULL),
1560      mBufferSize(0) {
1561}
1562
1563CallbackThread::~CallbackThread() {
1564    if (mBuffer) {
1565        free(mBuffer);
1566        mBuffer = NULL;
1567    }
1568}
1569
1570bool CallbackThread::threadLoop() {
1571    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1572    if (sink == NULL) {
1573        return false;
1574    }
1575
1576    if (mBuffer == NULL) {
1577        mBufferSize = sink->bufferSize();
1578        mBuffer = malloc(mBufferSize);
1579    }
1580
1581    size_t actualSize =
1582        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1583
1584    if (actualSize > 0) {
1585        sink->write(mBuffer, actualSize);
1586    }
1587
1588    return true;
1589}
1590
1591////////////////////////////////////////////////////////////////////////////////
1592
1593status_t MediaPlayerService::AudioCache::open(
1594        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1595        AudioCallback cb, void *cookie)
1596{
1597    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1598    if (mHeap->getHeapID() < 0) {
1599        return NO_INIT;
1600    }
1601
1602    mSampleRate = sampleRate;
1603    mChannelCount = (uint16_t)channelCount;
1604    mFormat = (uint16_t)format;
1605    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1606
1607    if (cb != NULL) {
1608        mCallbackThread = new CallbackThread(this, cb, cookie);
1609    }
1610    return NO_ERROR;
1611}
1612
1613void MediaPlayerService::AudioCache::start() {
1614    if (mCallbackThread != NULL) {
1615        mCallbackThread->run("AudioCache callback");
1616    }
1617}
1618
1619void MediaPlayerService::AudioCache::stop() {
1620    if (mCallbackThread != NULL) {
1621        mCallbackThread->requestExitAndWait();
1622    }
1623}
1624
1625ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1626{
1627    LOGV("write(%p, %u)", buffer, size);
1628    if ((buffer == 0) || (size == 0)) return size;
1629
1630    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1631    if (p == NULL) return NO_INIT;
1632    p += mSize;
1633    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1634    if (mSize + size > mHeap->getSize()) {
1635        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1636        size = mHeap->getSize() - mSize;
1637    }
1638    memcpy(p, buffer, size);
1639    mSize += size;
1640    return size;
1641}
1642
1643// call with lock held
1644status_t MediaPlayerService::AudioCache::wait()
1645{
1646    Mutex::Autolock lock(mLock);
1647    while (!mCommandComplete) {
1648        mSignal.wait(mLock);
1649    }
1650    mCommandComplete = false;
1651
1652    if (mError == NO_ERROR) {
1653        LOGV("wait - success");
1654    } else {
1655        LOGV("wait - error");
1656    }
1657    return mError;
1658}
1659
1660void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1661{
1662    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1663    AudioCache* p = static_cast<AudioCache*>(cookie);
1664
1665    // ignore buffering messages
1666    switch (msg)
1667    {
1668    case MEDIA_ERROR:
1669        LOGE("Error %d, %d occurred", ext1, ext2);
1670        p->mError = ext1;
1671        break;
1672    case MEDIA_PREPARED:
1673        LOGV("prepared");
1674        break;
1675    case MEDIA_PLAYBACK_COMPLETE:
1676        LOGV("playback complete");
1677        break;
1678    default:
1679        LOGV("ignored");
1680        return;
1681    }
1682
1683    // wake up thread
1684    Mutex::Autolock lock(p->mLock);
1685    p->mCommandComplete = true;
1686    p->mSignal.signal();
1687}
1688
1689} // namespace android
1690