MediaPlayerService.cpp revision 608d77b1cf4fb9f63dc861e4e1fa3e80a732f626 
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        for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
515            result.append(" MediaRecorderClient\n");
516            sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
517            snprintf(buffer, 255, "  pid(%d)\n\n", c->mPid);
518            result.append(buffer);
519        }
520
521        result.append(" Files opened and/or mapped:\n");
522        snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
523        FILE *f = fopen(buffer, "r");
524        if (f) {
525            while (!feof(f)) {
526                fgets(buffer, SIZE, f);
527                if (strstr(buffer, " /sdcard/") ||
528                    strstr(buffer, " /system/sounds/") ||
529                    strstr(buffer, " /system/media/")) {
530                    result.append("  ");
531                    result.append(buffer);
532                }
533            }
534            fclose(f);
535        } else {
536            result.append("couldn't open ");
537            result.append(buffer);
538            result.append("\n");
539        }
540
541        snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
542        DIR *d = opendir(buffer);
543        if (d) {
544            struct dirent *ent;
545            while((ent = readdir(d)) != NULL) {
546                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
547                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
548                    struct stat s;
549                    if (lstat(buffer, &s) == 0) {
550                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
551                            char linkto[256];
552                            int len = readlink(buffer, linkto, sizeof(linkto));
553                            if(len > 0) {
554                                if(len > 255) {
555                                    linkto[252] = '.';
556                                    linkto[253] = '.';
557                                    linkto[254] = '.';
558                                    linkto[255] = 0;
559                                } else {
560                                    linkto[len] = 0;
561                                }
562                                if (strstr(linkto, "/sdcard/") == linkto ||
563                                    strstr(linkto, "/system/sounds/") == linkto ||
564                                    strstr(linkto, "/system/media/") == linkto) {
565                                    result.append("  ");
566                                    result.append(buffer);
567                                    result.append(" -> ");
568                                    result.append(linkto);
569                                    result.append("\n");
570                                }
571                            }
572                        } else {
573                            result.append("  unexpected type for ");
574                            result.append(buffer);
575                            result.append("\n");
576                        }
577                    }
578                }
579            }
580            closedir(d);
581        } else {
582            result.append("couldn't open ");
583            result.append(buffer);
584            result.append("\n");
585        }
586
587#if defined(__arm__)
588        bool dumpMem = false;
589        for (size_t i = 0; i < args.size(); i++) {
590            if (args[i] == String16("-m")) {
591                dumpMem = true;
592            }
593        }
594        if (dumpMem) {
595            memStatus(fd, args);
596        }
597#endif
598    }
599    write(fd, result.string(), result.size());
600    return NO_ERROR;
601}
602
603void MediaPlayerService::removeClient(wp<Client> client)
604{
605    Mutex::Autolock lock(mLock);
606    mClients.remove(client);
607}
608
609MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
610        int32_t connId, const sp<IMediaPlayerClient>& client, int audioSessionId)
611{
612    LOGV("Client(%d) constructor", connId);
613    mPid = pid;
614    mConnId = connId;
615    mService = service;
616    mClient = client;
617    mLoop = false;
618    mStatus = NO_INIT;
619    mAudioSessionId = audioSessionId;
620
621#if CALLBACK_ANTAGONIZER
622    LOGD("create Antagonizer");
623    mAntagonizer = new Antagonizer(notify, this);
624#endif
625}
626
627MediaPlayerService::Client::~Client()
628{
629    LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
630    mAudioOutput.clear();
631    wp<Client> client(this);
632    disconnect();
633    mService->removeClient(client);
634}
635
636void MediaPlayerService::Client::disconnect()
637{
638    LOGV("disconnect(%d) from pid %d", mConnId, mPid);
639    // grab local reference and clear main reference to prevent future
640    // access to object
641    sp<MediaPlayerBase> p;
642    {
643        Mutex::Autolock l(mLock);
644        p = mPlayer;
645    }
646    mClient.clear();
647
648    mPlayer.clear();
649
650    // clear the notification to prevent callbacks to dead client
651    // and reset the player. We assume the player will serialize
652    // access to itself if necessary.
653    if (p != 0) {
654        p->setNotifyCallback(0, 0);
655#if CALLBACK_ANTAGONIZER
656        LOGD("kill Antagonizer");
657        mAntagonizer->kill();
658#endif
659        p->reset();
660    }
661
662    IPCThreadState::self()->flushCommands();
663}
664
665static player_type getDefaultPlayerType() {
666    return STAGEFRIGHT_PLAYER;
667}
668
669player_type getPlayerType(int fd, int64_t offset, int64_t length)
670{
671    char buf[20];
672    lseek(fd, offset, SEEK_SET);
673    read(fd, buf, sizeof(buf));
674    lseek(fd, offset, SEEK_SET);
675
676    long ident = *((long*)buf);
677
678    // Ogg vorbis?
679    if (ident == 0x5367674f) // 'OggS'
680        return STAGEFRIGHT_PLAYER;
681
682#ifndef NO_OPENCORE
683    if (ident == 0x75b22630) {
684        // The magic number for .asf files, i.e. wmv and wma content.
685        // These are not currently supported through stagefright.
686        return PV_PLAYER;
687    }
688#endif
689
690    // Some kind of MIDI?
691    EAS_DATA_HANDLE easdata;
692    if (EAS_Init(&easdata) == EAS_SUCCESS) {
693        EAS_FILE locator;
694        locator.path = NULL;
695        locator.fd = fd;
696        locator.offset = offset;
697        locator.length = length;
698        EAS_HANDLE  eashandle;
699        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
700            EAS_CloseFile(easdata, eashandle);
701            EAS_Shutdown(easdata);
702            return SONIVOX_PLAYER;
703        }
704        EAS_Shutdown(easdata);
705    }
706
707    return getDefaultPlayerType();
708}
709
710player_type getPlayerType(const char* url)
711{
712    if (TestPlayerStub::canBeUsed(url)) {
713        return TEST_PLAYER;
714    }
715
716    // use MidiFile for MIDI extensions
717    int lenURL = strlen(url);
718    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
719        int len = strlen(FILE_EXTS[i].extension);
720        int start = lenURL - len;
721        if (start > 0) {
722            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
723                return FILE_EXTS[i].playertype;
724            }
725        }
726    }
727
728    if (!strncasecmp(url, "rtsp://", 7)) {
729        char value[PROPERTY_VALUE_MAX];
730        if (!property_get("media.stagefright.enable-rtsp", value, NULL)
731            || (strcmp(value, "1") && strcasecmp(value, "true"))) {
732            // For now, we're going to use PV for rtsp-based playback
733            // by default until we can clear up a few more issues.
734            return PV_PLAYER;
735        }
736    }
737
738    return getDefaultPlayerType();
739}
740
741static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
742        notify_callback_f notifyFunc)
743{
744    sp<MediaPlayerBase> p;
745    switch (playerType) {
746#ifndef NO_OPENCORE
747        case PV_PLAYER:
748            LOGV(" create PVPlayer");
749            p = new PVPlayer();
750            break;
751#endif
752        case SONIVOX_PLAYER:
753            LOGV(" create MidiFile");
754            p = new MidiFile();
755            break;
756        case STAGEFRIGHT_PLAYER:
757            LOGV(" create StagefrightPlayer");
758            p = new StagefrightPlayer;
759            break;
760        case TEST_PLAYER:
761            LOGV("Create Test Player stub");
762            p = new TestPlayerStub();
763            break;
764    }
765    if (p != NULL) {
766        if (p->initCheck() == NO_ERROR) {
767            p->setNotifyCallback(cookie, notifyFunc);
768        } else {
769            p.clear();
770        }
771    }
772    if (p == NULL) {
773        LOGE("Failed to create player object");
774    }
775    return p;
776}
777
778sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
779{
780    // determine if we have the right player type
781    sp<MediaPlayerBase> p = mPlayer;
782    if ((p != NULL) && (p->playerType() != playerType)) {
783        LOGV("delete player");
784        p.clear();
785    }
786    if (p == NULL) {
787        p = android::createPlayer(playerType, this, notify);
788    }
789    return p;
790}
791
792status_t MediaPlayerService::Client::setDataSource(
793        const char *url, const KeyedVector<String8, String8> *headers)
794{
795    LOGV("setDataSource(%s)", url);
796    if (url == NULL)
797        return UNKNOWN_ERROR;
798
799    if (strncmp(url, "content://", 10) == 0) {
800        // get a filedescriptor for the content Uri and
801        // pass it to the setDataSource(fd) method
802
803        String16 url16(url);
804        int fd = android::openContentProviderFile(url16);
805        if (fd < 0)
806        {
807            LOGE("Couldn't open fd for %s", url);
808            return UNKNOWN_ERROR;
809        }
810        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
811        close(fd);
812        return mStatus;
813    } else {
814        player_type playerType = getPlayerType(url);
815        LOGV("player type = %d", playerType);
816
817        // create the right type of player
818        sp<MediaPlayerBase> p = createPlayer(playerType);
819        if (p == NULL) return NO_INIT;
820
821        if (!p->hardwareOutput()) {
822            mAudioOutput = new AudioOutput(mAudioSessionId);
823            static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
824        }
825
826        // now set data source
827        LOGV(" setDataSource");
828        mStatus = p->setDataSource(url, headers);
829        if (mStatus == NO_ERROR) {
830            mPlayer = p;
831        } else {
832            LOGE("  error: %d", mStatus);
833        }
834        return mStatus;
835    }
836}
837
838status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
839{
840    LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
841    struct stat sb;
842    int ret = fstat(fd, &sb);
843    if (ret != 0) {
844        LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
845        return UNKNOWN_ERROR;
846    }
847
848    LOGV("st_dev  = %llu", sb.st_dev);
849    LOGV("st_mode = %u", sb.st_mode);
850    LOGV("st_uid  = %lu", sb.st_uid);
851    LOGV("st_gid  = %lu", sb.st_gid);
852    LOGV("st_size = %llu", sb.st_size);
853
854    if (offset >= sb.st_size) {
855        LOGE("offset error");
856        ::close(fd);
857        return UNKNOWN_ERROR;
858    }
859    if (offset + length > sb.st_size) {
860        length = sb.st_size - offset;
861        LOGV("calculated length = %lld", length);
862    }
863
864    player_type playerType = getPlayerType(fd, offset, length);
865    LOGV("player type = %d", playerType);
866
867    // create the right type of player
868    sp<MediaPlayerBase> p = createPlayer(playerType);
869    if (p == NULL) return NO_INIT;
870
871    if (!p->hardwareOutput()) {
872        mAudioOutput = new AudioOutput(mAudioSessionId);
873        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
874    }
875
876    // now set data source
877    mStatus = p->setDataSource(fd, offset, length);
878    if (mStatus == NO_ERROR) mPlayer = p;
879    return mStatus;
880}
881
882status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
883{
884    LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
885    sp<MediaPlayerBase> p = getPlayer();
886    if (p == 0) return UNKNOWN_ERROR;
887    return p->setVideoSurface(surface);
888}
889
890status_t MediaPlayerService::Client::invoke(const Parcel& request,
891                                            Parcel *reply)
892{
893    sp<MediaPlayerBase> p = getPlayer();
894    if (p == NULL) return UNKNOWN_ERROR;
895    return p->invoke(request, reply);
896}
897
898// This call doesn't need to access the native player.
899status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
900{
901    status_t status;
902    media::Metadata::Filter allow, drop;
903
904    if (unmarshallFilter(filter, &allow, &status) &&
905        unmarshallFilter(filter, &drop, &status)) {
906        Mutex::Autolock lock(mLock);
907
908        mMetadataAllow = allow;
909        mMetadataDrop = drop;
910    }
911    return status;
912}
913
914status_t MediaPlayerService::Client::getMetadata(
915        bool update_only, bool apply_filter, Parcel *reply)
916{
917    sp<MediaPlayerBase> player = getPlayer();
918    if (player == 0) return UNKNOWN_ERROR;
919
920    status_t status;
921    // Placeholder for the return code, updated by the caller.
922    reply->writeInt32(-1);
923
924    media::Metadata::Filter ids;
925
926    // We don't block notifications while we fetch the data. We clear
927    // mMetadataUpdated first so we don't lose notifications happening
928    // during the rest of this call.
929    {
930        Mutex::Autolock lock(mLock);
931        if (update_only) {
932            ids = mMetadataUpdated;
933        }
934        mMetadataUpdated.clear();
935    }
936
937    media::Metadata metadata(reply);
938
939    metadata.appendHeader();
940    status = player->getMetadata(ids, reply);
941
942    if (status != OK) {
943        metadata.resetParcel();
944        LOGE("getMetadata failed %d", status);
945        return status;
946    }
947
948    // FIXME: Implement filtering on the result. Not critical since
949    // filtering takes place on the update notifications already. This
950    // would be when all the metadata are fetch and a filter is set.
951
952    // Everything is fine, update the metadata length.
953    metadata.updateLength();
954    return OK;
955}
956
957status_t MediaPlayerService::Client::suspend() {
958    sp<MediaPlayerBase> p = getPlayer();
959    if (p == 0) return UNKNOWN_ERROR;
960
961    return p->suspend();
962}
963
964status_t MediaPlayerService::Client::resume() {
965    sp<MediaPlayerBase> p = getPlayer();
966    if (p == 0) return UNKNOWN_ERROR;
967
968    return p->resume();
969}
970
971status_t MediaPlayerService::Client::prepareAsync()
972{
973    LOGV("[%d] prepareAsync", mConnId);
974    sp<MediaPlayerBase> p = getPlayer();
975    if (p == 0) return UNKNOWN_ERROR;
976    status_t ret = p->prepareAsync();
977#if CALLBACK_ANTAGONIZER
978    LOGD("start Antagonizer");
979    if (ret == NO_ERROR) mAntagonizer->start();
980#endif
981    return ret;
982}
983
984status_t MediaPlayerService::Client::start()
985{
986    LOGV("[%d] start", mConnId);
987    sp<MediaPlayerBase> p = getPlayer();
988    if (p == 0) return UNKNOWN_ERROR;
989    p->setLooping(mLoop);
990    return p->start();
991}
992
993status_t MediaPlayerService::Client::stop()
994{
995    LOGV("[%d] stop", mConnId);
996    sp<MediaPlayerBase> p = getPlayer();
997    if (p == 0) return UNKNOWN_ERROR;
998    return p->stop();
999}
1000
1001status_t MediaPlayerService::Client::pause()
1002{
1003    LOGV("[%d] pause", mConnId);
1004    sp<MediaPlayerBase> p = getPlayer();
1005    if (p == 0) return UNKNOWN_ERROR;
1006    return p->pause();
1007}
1008
1009status_t MediaPlayerService::Client::isPlaying(bool* state)
1010{
1011    *state = false;
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014    *state = p->isPlaying();
1015    LOGV("[%d] isPlaying: %d", mConnId, *state);
1016    return NO_ERROR;
1017}
1018
1019status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1020{
1021    LOGV("getCurrentPosition");
1022    sp<MediaPlayerBase> p = getPlayer();
1023    if (p == 0) return UNKNOWN_ERROR;
1024    status_t ret = p->getCurrentPosition(msec);
1025    if (ret == NO_ERROR) {
1026        LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1027    } else {
1028        LOGE("getCurrentPosition returned %d", ret);
1029    }
1030    return ret;
1031}
1032
1033status_t MediaPlayerService::Client::getDuration(int *msec)
1034{
1035    LOGV("getDuration");
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    status_t ret = p->getDuration(msec);
1039    if (ret == NO_ERROR) {
1040        LOGV("[%d] getDuration = %d", mConnId, *msec);
1041    } else {
1042        LOGE("getDuration returned %d", ret);
1043    }
1044    return ret;
1045}
1046
1047status_t MediaPlayerService::Client::seekTo(int msec)
1048{
1049    LOGV("[%d] seekTo(%d)", mConnId, msec);
1050    sp<MediaPlayerBase> p = getPlayer();
1051    if (p == 0) return UNKNOWN_ERROR;
1052    return p->seekTo(msec);
1053}
1054
1055status_t MediaPlayerService::Client::reset()
1056{
1057    LOGV("[%d] reset", mConnId);
1058    sp<MediaPlayerBase> p = getPlayer();
1059    if (p == 0) return UNKNOWN_ERROR;
1060    return p->reset();
1061}
1062
1063status_t MediaPlayerService::Client::setAudioStreamType(int type)
1064{
1065    LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1066    // TODO: for hardware output, call player instead
1067    Mutex::Autolock l(mLock);
1068    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1069    return NO_ERROR;
1070}
1071
1072status_t MediaPlayerService::Client::setLooping(int loop)
1073{
1074    LOGV("[%d] setLooping(%d)", mConnId, loop);
1075    mLoop = loop;
1076    sp<MediaPlayerBase> p = getPlayer();
1077    if (p != 0) return p->setLooping(loop);
1078    return NO_ERROR;
1079}
1080
1081status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1082{
1083    LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1084    // TODO: for hardware output, call player instead
1085    Mutex::Autolock l(mLock);
1086    if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1087    return NO_ERROR;
1088}
1089
1090
1091void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
1092{
1093    Client* client = static_cast<Client*>(cookie);
1094
1095    if (MEDIA_INFO == msg &&
1096        MEDIA_INFO_METADATA_UPDATE == ext1) {
1097        const media::Metadata::Type metadata_type = ext2;
1098
1099        if(client->shouldDropMetadata(metadata_type)) {
1100            return;
1101        }
1102
1103        // Update the list of metadata that have changed. getMetadata
1104        // also access mMetadataUpdated and clears it.
1105        client->addNewMetadataUpdate(metadata_type);
1106    }
1107    LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1108    client->mClient->notify(msg, ext1, ext2);
1109}
1110
1111
1112bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1113{
1114    Mutex::Autolock lock(mLock);
1115
1116    if (findMetadata(mMetadataDrop, code)) {
1117        return true;
1118    }
1119
1120    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1121        return false;
1122    } else {
1123        return true;
1124    }
1125}
1126
1127
1128void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1129    Mutex::Autolock lock(mLock);
1130    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1131        mMetadataUpdated.add(metadata_type);
1132    }
1133}
1134
1135#if CALLBACK_ANTAGONIZER
1136const int Antagonizer::interval = 10000; // 10 msecs
1137
1138Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1139    mExit(false), mActive(false), mClient(client), mCb(cb)
1140{
1141    createThread(callbackThread, this);
1142}
1143
1144void Antagonizer::kill()
1145{
1146    Mutex::Autolock _l(mLock);
1147    mActive = false;
1148    mExit = true;
1149    mCondition.wait(mLock);
1150}
1151
1152int Antagonizer::callbackThread(void* user)
1153{
1154    LOGD("Antagonizer started");
1155    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1156    while (!p->mExit) {
1157        if (p->mActive) {
1158            LOGV("send event");
1159            p->mCb(p->mClient, 0, 0, 0);
1160        }
1161        usleep(interval);
1162    }
1163    Mutex::Autolock _l(p->mLock);
1164    p->mCondition.signal();
1165    LOGD("Antagonizer stopped");
1166    return 0;
1167}
1168#endif
1169
1170static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1171
1172sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1173{
1174    LOGV("decode(%s)", url);
1175    sp<MemoryBase> mem;
1176    sp<MediaPlayerBase> player;
1177
1178    // Protect our precious, precious DRMd ringtones by only allowing
1179    // decoding of http, but not filesystem paths or content Uris.
1180    // If the application wants to decode those, it should open a
1181    // filedescriptor for them and use that.
1182    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1183        LOGD("Can't decode %s by path, use filedescriptor instead", url);
1184        return mem;
1185    }
1186
1187    player_type playerType = getPlayerType(url);
1188    LOGV("player type = %d", playerType);
1189
1190    // create the right type of player
1191    sp<AudioCache> cache = new AudioCache(url);
1192    player = android::createPlayer(playerType, cache.get(), cache->notify);
1193    if (player == NULL) goto Exit;
1194    if (player->hardwareOutput()) goto Exit;
1195
1196    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1197
1198    // set data source
1199    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1200
1201    LOGV("prepare");
1202    player->prepareAsync();
1203
1204    LOGV("wait for prepare");
1205    if (cache->wait() != NO_ERROR) goto Exit;
1206
1207    LOGV("start");
1208    player->start();
1209
1210    LOGV("wait for playback complete");
1211    if (cache->wait() != NO_ERROR) goto Exit;
1212
1213    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1214    *pSampleRate = cache->sampleRate();
1215    *pNumChannels = cache->channelCount();
1216    *pFormat = cache->format();
1217    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1218
1219Exit:
1220    if (player != 0) player->reset();
1221    return mem;
1222}
1223
1224sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
1225{
1226    LOGV("decode(%d, %lld, %lld)", fd, offset, length);
1227    sp<MemoryBase> mem;
1228    sp<MediaPlayerBase> player;
1229
1230    player_type playerType = getPlayerType(fd, offset, length);
1231    LOGV("player type = %d", playerType);
1232
1233    // create the right type of player
1234    sp<AudioCache> cache = new AudioCache("decode_fd");
1235    player = android::createPlayer(playerType, cache.get(), cache->notify);
1236    if (player == NULL) goto Exit;
1237    if (player->hardwareOutput()) goto Exit;
1238
1239    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1240
1241    // set data source
1242    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1243
1244    LOGV("prepare");
1245    player->prepareAsync();
1246
1247    LOGV("wait for prepare");
1248    if (cache->wait() != NO_ERROR) goto Exit;
1249
1250    LOGV("start");
1251    player->start();
1252
1253    LOGV("wait for playback complete");
1254    if (cache->wait() != NO_ERROR) goto Exit;
1255
1256    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1257    *pSampleRate = cache->sampleRate();
1258    *pNumChannels = cache->channelCount();
1259    *pFormat = cache->format();
1260    LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1261
1262Exit:
1263    if (player != 0) player->reset();
1264    ::close(fd);
1265    return mem;
1266}
1267
1268/*
1269 * Avert your eyes, ugly hack ahead.
1270 * The following is to support music visualizations.
1271 */
1272
1273static const int NUMVIZBUF = 32;
1274static const int VIZBUFFRAMES = 1024;
1275static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
1276static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
1277
1278static bool gotMem = false;
1279static sp<MemoryHeapBase> heap;
1280static sp<MemoryBase> mem[NUMVIZBUF];
1281static uint64_t endTime;
1282static uint64_t lastReadTime;
1283static uint64_t lastWriteTime;
1284static int writeIdx = 0;
1285
1286static void allocVizBufs() {
1287    if (!gotMem) {
1288        heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
1289        for (int i=0;i<NUMVIZBUF;i++) {
1290            mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
1291        }
1292        endTime = 0;
1293        gotMem = true;
1294    }
1295}
1296
1297
1298/*
1299 * Get a buffer of audio data that is about to be played.
1300 * We don't synchronize this because in practice the writer
1301 * is ahead of the reader, and even if we did happen to catch
1302 * a buffer while it's being written, it's just a visualization,
1303 * so no harm done.
1304 */
1305static sp<MemoryBase> getVizBuffer() {
1306
1307    allocVizBufs();
1308
1309    lastReadTime = uptimeMillis();
1310
1311    // if there is no recent buffer (yet), just return empty handed
1312    if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
1313        //LOGI("@@@@    no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
1314        return NULL;
1315    }
1316
1317    int timedelta = endTime - lastReadTime;
1318    if (timedelta < 0) timedelta = 0;
1319    int framedelta = timedelta * 44100 / 1000;
1320    int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
1321    while (headIdx < 0) {
1322        headIdx += NUMVIZBUF;
1323    }
1324    return mem[headIdx];
1325}
1326
1327// Append the data to the vizualization buffer
1328static void makeVizBuffers(const char *data, int len, uint64_t time) {
1329
1330    allocVizBufs();
1331
1332    uint64_t startTime = time;
1333    const int frameSize = 4; // 16 bit stereo sample is 4 bytes
1334    int offset = writeIdx;
1335    int maxoff = heap->getSize() / 2; // in shorts
1336    short *base = (short*)heap->getBase();
1337    short *src = (short*)data;
1338    while (len > 0) {
1339
1340        // Degrade quality by mixing to mono and clearing the lowest 3 bits.
1341        // This should still be good enough for a visualization
1342        base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
1343        src += 2;
1344        len -= frameSize;
1345        if (offset >= maxoff) {
1346            offset = 0;
1347        }
1348    }
1349    writeIdx = offset;
1350    endTime = time + (len / frameSize) / 44;
1351    //LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
1352}
1353
1354sp<IMemory> MediaPlayerService::snoop()
1355{
1356    sp<MemoryBase> mem = getVizBuffer();
1357    return mem;
1358}
1359
1360
1361#undef LOG_TAG
1362#define LOG_TAG "AudioSink"
1363MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1364    : mCallback(NULL),
1365      mCallbackCookie(NULL),
1366      mSessionId(sessionId) {
1367    LOGV("AudioOutput(%d)", sessionId);
1368    mTrack = 0;
1369    mStreamType = AudioSystem::MUSIC;
1370    mLeftVolume = 1.0;
1371    mRightVolume = 1.0;
1372    mLatency = 0;
1373    mMsecsPerFrame = 0;
1374    mNumFramesWritten = 0;
1375    setMinBufferCount();
1376}
1377
1378MediaPlayerService::AudioOutput::~AudioOutput()
1379{
1380    close();
1381}
1382
1383void MediaPlayerService::AudioOutput::setMinBufferCount()
1384{
1385    char value[PROPERTY_VALUE_MAX];
1386    if (property_get("ro.kernel.qemu", value, 0)) {
1387        mIsOnEmulator = true;
1388        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1389    }
1390}
1391
1392bool MediaPlayerService::AudioOutput::isOnEmulator()
1393{
1394    setMinBufferCount();
1395    return mIsOnEmulator;
1396}
1397
1398int MediaPlayerService::AudioOutput::getMinBufferCount()
1399{
1400    setMinBufferCount();
1401    return mMinBufferCount;
1402}
1403
1404ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1405{
1406    if (mTrack == 0) return NO_INIT;
1407    return mTrack->frameCount() * frameSize();
1408}
1409
1410ssize_t MediaPlayerService::AudioOutput::frameCount() const
1411{
1412    if (mTrack == 0) return NO_INIT;
1413    return mTrack->frameCount();
1414}
1415
1416ssize_t MediaPlayerService::AudioOutput::channelCount() const
1417{
1418    if (mTrack == 0) return NO_INIT;
1419    return mTrack->channelCount();
1420}
1421
1422ssize_t MediaPlayerService::AudioOutput::frameSize() const
1423{
1424    if (mTrack == 0) return NO_INIT;
1425    return mTrack->frameSize();
1426}
1427
1428uint32_t MediaPlayerService::AudioOutput::latency () const
1429{
1430    return mLatency;
1431}
1432
1433float MediaPlayerService::AudioOutput::msecsPerFrame() const
1434{
1435    return mMsecsPerFrame;
1436}
1437
1438status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1439{
1440    if (mTrack == 0) return NO_INIT;
1441    return mTrack->getPosition(position);
1442}
1443
1444status_t MediaPlayerService::AudioOutput::open(
1445        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1446        AudioCallback cb, void *cookie)
1447{
1448    mCallback = cb;
1449    mCallbackCookie = cookie;
1450
1451    // Check argument "bufferCount" against the mininum buffer count
1452    if (bufferCount < mMinBufferCount) {
1453        LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1454        bufferCount = mMinBufferCount;
1455
1456    }
1457    LOGV("open(%u, %d, %d, %d, %d)", sampleRate, channelCount, format, bufferCount,mSessionId);
1458    if (mTrack) close();
1459    int afSampleRate;
1460    int afFrameCount;
1461    int frameCount;
1462
1463    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1464        return NO_INIT;
1465    }
1466    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1467        return NO_INIT;
1468    }
1469
1470    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1471
1472    AudioTrack *t;
1473    if (mCallback != NULL) {
1474        t = new AudioTrack(
1475                mStreamType,
1476                sampleRate,
1477                format,
1478                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1479                frameCount,
1480                0 /* flags */,
1481                CallbackWrapper,
1482                this,
1483                0,
1484                mSessionId);
1485    } else {
1486        t = new AudioTrack(
1487                mStreamType,
1488                sampleRate,
1489                format,
1490                (channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
1491                frameCount,
1492                0,
1493                NULL,
1494                NULL,
1495                0,
1496                mSessionId);
1497    }
1498
1499    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1500        LOGE("Unable to create audio track");
1501        delete t;
1502        return NO_INIT;
1503    }
1504
1505    LOGV("setVolume");
1506    t->setVolume(mLeftVolume, mRightVolume);
1507    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1508    mLatency = t->latency();
1509    mTrack = t;
1510    return NO_ERROR;
1511}
1512
1513void MediaPlayerService::AudioOutput::start()
1514{
1515    LOGV("start");
1516    if (mTrack) {
1517        mTrack->setVolume(mLeftVolume, mRightVolume);
1518        mTrack->start();
1519        mTrack->getPosition(&mNumFramesWritten);
1520    }
1521}
1522
1523void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
1524    // Only make visualization buffers if anyone recently requested visualization data
1525    uint64_t now = uptimeMillis();
1526    if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
1527        // Based on the current play counter, the number of frames written and
1528        // the current real time we can calculate the approximate real start
1529        // time of the buffer we're about to write.
1530        uint32_t pos;
1531        mTrack->getPosition(&pos);
1532
1533        // we're writing ahead by this many frames:
1534        int ahead = mNumFramesWritten - pos;
1535        //LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
1536        // which is this many milliseconds, assuming 44100 Hz:
1537        ahead /= 44;
1538
1539        makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
1540        lastWriteTime = now;
1541    }
1542}
1543
1544
1545ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1546{
1547    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1548
1549    //LOGV("write(%p, %u)", buffer, size);
1550    if (mTrack) {
1551        snoopWrite(buffer, size);
1552        ssize_t ret = mTrack->write(buffer, size);
1553        mNumFramesWritten += ret / 4; // assume 16 bit stereo
1554        return ret;
1555    }
1556    return NO_INIT;
1557}
1558
1559void MediaPlayerService::AudioOutput::stop()
1560{
1561    LOGV("stop");
1562    if (mTrack) mTrack->stop();
1563    lastWriteTime = 0;
1564}
1565
1566void MediaPlayerService::AudioOutput::flush()
1567{
1568    LOGV("flush");
1569    if (mTrack) mTrack->flush();
1570}
1571
1572void MediaPlayerService::AudioOutput::pause()
1573{
1574    LOGV("pause");
1575    if (mTrack) mTrack->pause();
1576    lastWriteTime = 0;
1577}
1578
1579void MediaPlayerService::AudioOutput::close()
1580{
1581    LOGV("close");
1582    delete mTrack;
1583    mTrack = 0;
1584}
1585
1586void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1587{
1588    LOGV("setVolume(%f, %f)", left, right);
1589    mLeftVolume = left;
1590    mRightVolume = right;
1591    if (mTrack) {
1592        mTrack->setVolume(left, right);
1593    }
1594}
1595
1596// static
1597void MediaPlayerService::AudioOutput::CallbackWrapper(
1598        int event, void *cookie, void *info) {
1599    //LOGV("callbackwrapper");
1600    if (event != AudioTrack::EVENT_MORE_DATA) {
1601        return;
1602    }
1603
1604    AudioOutput *me = (AudioOutput *)cookie;
1605    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1606
1607    size_t actualSize = (*me->mCallback)(
1608            me, buffer->raw, buffer->size, me->mCallbackCookie);
1609
1610    buffer->size = actualSize;
1611
1612    if (actualSize > 0) {
1613        me->snoopWrite(buffer->raw, actualSize);
1614    }
1615}
1616
1617#undef LOG_TAG
1618#define LOG_TAG "AudioCache"
1619MediaPlayerService::AudioCache::AudioCache(const char* name) :
1620    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1621    mError(NO_ERROR), mCommandComplete(false)
1622{
1623    // create ashmem heap
1624    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1625}
1626
1627uint32_t MediaPlayerService::AudioCache::latency () const
1628{
1629    return 0;
1630}
1631
1632float MediaPlayerService::AudioCache::msecsPerFrame() const
1633{
1634    return mMsecsPerFrame;
1635}
1636
1637status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1638{
1639    if (position == 0) return BAD_VALUE;
1640    *position = mSize;
1641    return NO_ERROR;
1642}
1643
1644////////////////////////////////////////////////////////////////////////////////
1645
1646struct CallbackThread : public Thread {
1647    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1648                   MediaPlayerBase::AudioSink::AudioCallback cb,
1649                   void *cookie);
1650
1651protected:
1652    virtual ~CallbackThread();
1653
1654    virtual bool threadLoop();
1655
1656private:
1657    wp<MediaPlayerBase::AudioSink> mSink;
1658    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1659    void *mCookie;
1660    void *mBuffer;
1661    size_t mBufferSize;
1662
1663    CallbackThread(const CallbackThread &);
1664    CallbackThread &operator=(const CallbackThread &);
1665};
1666
1667CallbackThread::CallbackThread(
1668        const wp<MediaPlayerBase::AudioSink> &sink,
1669        MediaPlayerBase::AudioSink::AudioCallback cb,
1670        void *cookie)
1671    : mSink(sink),
1672      mCallback(cb),
1673      mCookie(cookie),
1674      mBuffer(NULL),
1675      mBufferSize(0) {
1676}
1677
1678CallbackThread::~CallbackThread() {
1679    if (mBuffer) {
1680        free(mBuffer);
1681        mBuffer = NULL;
1682    }
1683}
1684
1685bool CallbackThread::threadLoop() {
1686    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1687    if (sink == NULL) {
1688        return false;
1689    }
1690
1691    if (mBuffer == NULL) {
1692        mBufferSize = sink->bufferSize();
1693        mBuffer = malloc(mBufferSize);
1694    }
1695
1696    size_t actualSize =
1697        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1698
1699    if (actualSize > 0) {
1700        sink->write(mBuffer, actualSize);
1701    }
1702
1703    return true;
1704}
1705
1706////////////////////////////////////////////////////////////////////////////////
1707
1708status_t MediaPlayerService::AudioCache::open(
1709        uint32_t sampleRate, int channelCount, int format, int bufferCount,
1710        AudioCallback cb, void *cookie)
1711{
1712    LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
1713    if (mHeap->getHeapID() < 0) {
1714        return NO_INIT;
1715    }
1716
1717    mSampleRate = sampleRate;
1718    mChannelCount = (uint16_t)channelCount;
1719    mFormat = (uint16_t)format;
1720    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1721
1722    if (cb != NULL) {
1723        mCallbackThread = new CallbackThread(this, cb, cookie);
1724    }
1725    return NO_ERROR;
1726}
1727
1728void MediaPlayerService::AudioCache::start() {
1729    if (mCallbackThread != NULL) {
1730        mCallbackThread->run("AudioCache callback");
1731    }
1732}
1733
1734void MediaPlayerService::AudioCache::stop() {
1735    if (mCallbackThread != NULL) {
1736        mCallbackThread->requestExitAndWait();
1737    }
1738}
1739
1740ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1741{
1742    LOGV("write(%p, %u)", buffer, size);
1743    if ((buffer == 0) || (size == 0)) return size;
1744
1745    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1746    if (p == NULL) return NO_INIT;
1747    p += mSize;
1748    LOGV("memcpy(%p, %p, %u)", p, buffer, size);
1749    if (mSize + size > mHeap->getSize()) {
1750        LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1751        size = mHeap->getSize() - mSize;
1752    }
1753    memcpy(p, buffer, size);
1754    mSize += size;
1755    return size;
1756}
1757
1758// call with lock held
1759status_t MediaPlayerService::AudioCache::wait()
1760{
1761    Mutex::Autolock lock(mLock);
1762    while (!mCommandComplete) {
1763        mSignal.wait(mLock);
1764    }
1765    mCommandComplete = false;
1766
1767    if (mError == NO_ERROR) {
1768        LOGV("wait - success");
1769    } else {
1770        LOGV("wait - error");
1771    }
1772    return mError;
1773}
1774
1775void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
1776{
1777    LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1778    AudioCache* p = static_cast<AudioCache*>(cookie);
1779
1780    // ignore buffering messages
1781    switch (msg)
1782    {
1783    case MEDIA_ERROR:
1784        LOGE("Error %d, %d occurred", ext1, ext2);
1785        p->mError = ext1;
1786        break;
1787    case MEDIA_PREPARED:
1788        LOGV("prepared");
1789        break;
1790    case MEDIA_PLAYBACK_COMPLETE:
1791        LOGV("playback complete");
1792        break;
1793    default:
1794        LOGV("ignored");
1795        return;
1796    }
1797
1798    // wake up thread
1799    Mutex::Autolock lock(p->mLock);
1800    p->mCommandComplete = true;
1801    p->mSignal.signal();
1802}
1803
1804} // namespace android
1805