/*
**
** Copyright 2008, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
// Proxy for media player implementations
//#define LOG_NDEBUG 0
#define LOG_TAG "MediaPlayerService"
#include <utils/Log.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include <string.h>
#include <cutils/atomic.h>
#include <cutils/properties.h> // for property_get
#include <utils/misc.h>
#include <android_runtime/ActivityManager.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/MemoryHeapBase.h>
#include <binder/MemoryBase.h>
#include <utils/Errors.h> // for status_t
#include <utils/String8.h>
#include <utils/SystemClock.h>
#include <utils/Vector.h>
#include <cutils/properties.h>
#include <media/MediaPlayerInterface.h>
#include <media/mediarecorder.h>
#include <media/MediaMetadataRetrieverInterface.h>
#include <media/Metadata.h>
#include <media/AudioTrack.h>
#include "MediaRecorderClient.h"
#include "MediaPlayerService.h"
#include "MetadataRetrieverClient.h"
#include "MidiFile.h"
#include "VorbisPlayer.h"
#include <media/PVPlayer.h>
#include "TestPlayerStub.h"
#include "StagefrightPlayer.h"
#include <OMX.h>
/* desktop Linux needs a little help with gettid() */
#if defined(HAVE_GETTID) && !defined(HAVE_ANDROID_OS)
#define __KERNEL__
# include <linux/unistd.h>
#ifdef _syscall0
_syscall0(pid_t,gettid)
#else
pid_t gettid() { return syscall(__NR_gettid);}
#endif
#undef __KERNEL__
#endif
namespace {
using android::media::Metadata;
using android::status_t;
using android::OK;
using android::BAD_VALUE;
using android::NOT_ENOUGH_DATA;
using android::Parcel;
// Max number of entries in the filter.
const int kMaxFilterSize = 64; // I pulled that out of thin air.
// FIXME: Move all the metadata related function in the Metadata.cpp
// Unmarshall a filter from a Parcel.
// Filter format in a parcel:
//
// 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
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | number of entries (n) |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | metadata type 1 |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | metadata type 2 |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// ....
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
// | metadata type n |
// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
//
// @param p Parcel that should start with a filter.
// @param[out] filter On exit contains the list of metadata type to be
// filtered.
// @param[out] status On exit contains the status code to be returned.
// @return true if the parcel starts with a valid filter.
bool unmarshallFilter(const Parcel& p,
Metadata::Filter *filter,
status_t *status)
{
int32_t val;
if (p.readInt32(&val) != OK)
{
LOGE("Failed to read filter's length");
*status = NOT_ENOUGH_DATA;
return false;
}
if( val > kMaxFilterSize || val < 0)
{
LOGE("Invalid filter len %d", val);
*status = BAD_VALUE;
return false;
}
const size_t num = val;
filter->clear();
filter->setCapacity(num);
size_t size = num * sizeof(Metadata::Type);
if (p.dataAvail() < size)
{
LOGE("Filter too short expected %d but got %d", size, p.dataAvail());
*status = NOT_ENOUGH_DATA;
return false;
}
const Metadata::Type *data =
static_cast<const Metadata::Type*>(p.readInplace(size));
if (NULL == data)
{
LOGE("Filter had no data");
*status = BAD_VALUE;
return false;
}
// TODO: The stl impl of vector would be more efficient here
// because it degenerates into a memcpy on pod types. Try to
// replace later or use stl::set.
for (size_t i = 0; i < num; ++i)
{
filter->add(*data);
++data;
}
*status = OK;
return true;
}
// @param filter Of metadata type.
// @param val To be searched.
// @return true if a match was found.
bool findMetadata(const Metadata::Filter& filter, const int32_t val)
{
// Deal with empty and ANY right away
if (filter.isEmpty()) return false;
if (filter[0] == Metadata::kAny) return true;
return filter.indexOf(val) >= 0;
}
} // anonymous namespace
namespace android {
// TODO: Temp hack until we can register players
typedef struct {
const char *extension;
const player_type playertype;
} extmap;
extmap FILE_EXTS [] = {
{".mid", SONIVOX_PLAYER},
{".midi", SONIVOX_PLAYER},
{".smf", SONIVOX_PLAYER},
{".xmf", SONIVOX_PLAYER},
{".imy", SONIVOX_PLAYER},
{".rtttl", SONIVOX_PLAYER},
{".rtx", SONIVOX_PLAYER},
{".ota", SONIVOX_PLAYER},
{".ogg", VORBIS_PLAYER},
{".oga", VORBIS_PLAYER},
#ifndef NO_OPENCORE
{".wma", PV_PLAYER},
{".wmv", PV_PLAYER},
{".asf", PV_PLAYER},
#endif
};
// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
void MediaPlayerService::instantiate() {
defaultServiceManager()->addService(
String16("media.player"), new MediaPlayerService());
}
MediaPlayerService::MediaPlayerService()
{
LOGV("MediaPlayerService created");
mNextConnId = 1;
}
MediaPlayerService::~MediaPlayerService()
{
LOGV("MediaPlayerService destroyed");
}
sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
{
#ifndef NO_OPENCORE
sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
wp<MediaRecorderClient> w = recorder;
Mutex::Autolock lock(mLock);
mMediaRecorderClients.add(w);
#else
sp<MediaRecorderClient> recorder = NULL;
#endif
LOGV("Create new media recorder client from pid %d", pid);
return recorder;
}
void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
{
Mutex::Autolock lock(mLock);
mMediaRecorderClients.remove(client);
LOGV("Delete media recorder client");
}
sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
{
sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
LOGV("Create new media retriever from pid %d", pid);
return retriever;
}
sp<IMediaPlayer> MediaPlayerService::create(
pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
const KeyedVector<String8, String8> *headers)
{
int32_t connId = android_atomic_inc(&mNextConnId);
sp<Client> c = new Client(this, pid, connId, client);
LOGV("Create new client(%d) from pid %d, url=%s, connId=%d", connId, pid, url, connId);
if (NO_ERROR != c->setDataSource(url, headers))
{
c.clear();
return c;
}
wp<Client> w = c;
Mutex::Autolock lock(mLock);
mClients.add(w);
return c;
}
sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
int fd, int64_t offset, int64_t length)
{
int32_t connId = android_atomic_inc(&mNextConnId);
sp<Client> c = new Client(this, pid, connId, client);
LOGV("Create new client(%d) from pid %d, fd=%d, offset=%lld, length=%lld",
connId, pid, fd, offset, length);
if (NO_ERROR != c->setDataSource(fd, offset, length)) {
c.clear();
} else {
wp<Client> w = c;
Mutex::Autolock lock(mLock);
mClients.add(w);
}
::close(fd);
return c;
}
sp<IOMX> MediaPlayerService::getOMX() {
Mutex::Autolock autoLock(mLock);
if (mOMX.get() == NULL) {
mOMX = new OMX;
}
return mOMX;
}
status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
result.append(" AudioCache\n");
if (mHeap != 0) {
snprintf(buffer, 255, " heap base(%p), size(%d), flags(%d), device(%s)\n",
mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
result.append(buffer);
}
snprintf(buffer, 255, " msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
result.append(buffer);
snprintf(buffer, 255, " sample rate(%d), size(%d), error(%d), command complete(%s)\n",
mSampleRate, mSize, mError, mCommandComplete?"true":"false");
result.append(buffer);
::write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
result.append(" AudioOutput\n");
snprintf(buffer, 255, " stream type(%d), left - right volume(%f, %f)\n",
mStreamType, mLeftVolume, mRightVolume);
result.append(buffer);
snprintf(buffer, 255, " msec per frame(%f), latency (%d)\n",
mMsecsPerFrame, mLatency);
result.append(buffer);
::write(fd, result.string(), result.size());
if (mTrack != 0) {
mTrack->dump(fd, args);
}
return NO_ERROR;
}
status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
result.append(" Client\n");
snprintf(buffer, 255, " pid(%d), connId(%d), status(%d), looping(%s)\n",
mPid, mConnId, mStatus, mLoop?"true": "false");
result.append(buffer);
write(fd, result.string(), result.size());
if (mAudioOutput != 0) {
mAudioOutput->dump(fd, args);
}
write(fd, "\n", 1);
return NO_ERROR;
}
static int myTid() {
#ifdef HAVE_GETTID
return gettid();
#else
return getpid();
#endif
}
#if defined(__arm__)
extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize,
size_t* infoSize, size_t* totalMemory, size_t* backtraceSize);
extern "C" void free_malloc_leak_info(uint8_t* info);
// Use the String-class below instead of String8 to allocate all memory
// beforehand and not reenter the heap while we are examining it...
struct MyString8 {
static const size_t MAX_SIZE = 256 * 1024;
MyString8()
: mPtr((char *)malloc(MAX_SIZE)) {
*mPtr = '\0';
}
~MyString8() {
free(mPtr);
}
void append(const char *s) {
strcat(mPtr, s);
}
const char *string() const {
return mPtr;
}
size_t size() const {
return strlen(mPtr);
}
private:
char *mPtr;
MyString8(const MyString8 &);
MyString8 &operator=(const MyString8 &);
};
void memStatus(int fd, const Vector<String16>& args)
{
const size_t SIZE = 256;
char buffer[SIZE];
MyString8 result;
typedef struct {
size_t size;
size_t dups;
intptr_t * backtrace;
} AllocEntry;
uint8_t *info = NULL;
size_t overallSize = 0;
size_t infoSize = 0;
size_t totalMemory = 0;
size_t backtraceSize = 0;
get_malloc_leak_info(&info, &overallSize, &infoSize, &totalMemory, &backtraceSize);
if (info) {
uint8_t *ptr = info;
size_t count = overallSize / infoSize;
snprintf(buffer, SIZE, " Allocation count %i\n", count);
result.append(buffer);
snprintf(buffer, SIZE, " Total memory %i\n", totalMemory);
result.append(buffer);
AllocEntry * entries = new AllocEntry[count];
for (size_t i = 0; i < count; i++) {
// Each entry should be size_t, size_t, intptr_t[backtraceSize]
AllocEntry *e = &entries[i];
e->size = *reinterpret_cast<size_t *>(ptr);
ptr += sizeof(size_t);
e->dups = *reinterpret_cast<size_t *>(ptr);
ptr += sizeof(size_t);
e->backtrace = reinterpret_cast<intptr_t *>(ptr);
ptr += sizeof(intptr_t) * backtraceSize;
}
// Now we need to sort the entries. They come sorted by size but
// not by stack trace which causes problems using diff.
bool moved;
do {
moved = false;
for (size_t i = 0; i < (count - 1); i++) {
AllocEntry *e1 = &entries[i];
AllocEntry *e2 = &entries[i+1];
bool swap = e1->size < e2->size;
if (e1->size == e2->size) {
for(size_t j = 0; j < backtraceSize; j++) {
if (e1->backtrace[j] == e2->backtrace[j]) {
continue;
}
swap = e1->backtrace[j] < e2->backtrace[j];
break;
}
}
if (swap) {
AllocEntry t = entries[i];
entries[i] = entries[i+1];
entries[i+1] = t;
moved = true;
}
}
} while (moved);
for (size_t i = 0; i < count; i++) {
AllocEntry *e = &entries[i];
snprintf(buffer, SIZE, "size %8i, dup %4i, ", e->size, e->dups);
result.append(buffer);
for (size_t ct = 0; (ct < backtraceSize) && e->backtrace[ct]; ct++) {
if (ct) {
result.append(", ");
}
snprintf(buffer, SIZE, "0x%08x", e->backtrace[ct]);
result.append(buffer);
}
result.append("\n");
}
delete[] entries;
free_malloc_leak_info(info);
}
write(fd, result.string(), result.size());
}
#endif
status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
snprintf(buffer, SIZE, "Permission Denial: "
"can't dump MediaPlayerService from pid=%d, uid=%d\n",
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
result.append(buffer);
} else {
Mutex::Autolock lock(mLock);
for (int i = 0, n = mClients.size(); i < n; ++i) {
sp<Client> c = mClients[i].promote();
if (c != 0) c->dump(fd, args);
}
for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
result.append(" MediaRecorderClient\n");
sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
snprintf(buffer, 255, " pid(%d)\n\n", c->mPid);
result.append(buffer);
}
result.append(" Files opened and/or mapped:\n");
snprintf(buffer, SIZE, "/proc/%d/maps", myTid());
FILE *f = fopen(buffer, "r");
if (f) {
while (!feof(f)) {
fgets(buffer, SIZE, f);
if (strstr(buffer, " /sdcard/") ||
strstr(buffer, " /system/sounds/") ||
strstr(buffer, " /system/media/")) {
result.append(" ");
result.append(buffer);
}
}
fclose(f);
} else {
result.append("couldn't open ");
result.append(buffer);
result.append("\n");
}
snprintf(buffer, SIZE, "/proc/%d/fd", myTid());
DIR *d = opendir(buffer);
if (d) {
struct dirent *ent;
while((ent = readdir(d)) != NULL) {
if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
snprintf(buffer, SIZE, "/proc/%d/fd/%s", myTid(), ent->d_name);
struct stat s;
if (lstat(buffer, &s) == 0) {
if ((s.st_mode & S_IFMT) == S_IFLNK) {
char linkto[256];
int len = readlink(buffer, linkto, sizeof(linkto));
if(len > 0) {
if(len > 255) {
linkto[252] = '.';
linkto[253] = '.';
linkto[254] = '.';
linkto[255] = 0;
} else {
linkto[len] = 0;
}
if (strstr(linkto, "/sdcard/") == linkto ||
strstr(linkto, "/system/sounds/") == linkto ||
strstr(linkto, "/system/media/") == linkto) {
result.append(" ");
result.append(buffer);
result.append(" -> ");
result.append(linkto);
result.append("\n");
}
}
} else {
result.append(" unexpected type for ");
result.append(buffer);
result.append("\n");
}
}
}
}
closedir(d);
} else {
result.append("couldn't open ");
result.append(buffer);
result.append("\n");
}
#if defined(__arm__)
bool dumpMem = false;
for (size_t i = 0; i < args.size(); i++) {
if (args[i] == String16("-m")) {
dumpMem = true;
}
}
if (dumpMem) {
memStatus(fd, args);
}
#endif
}
write(fd, result.string(), result.size());
return NO_ERROR;
}
void MediaPlayerService::removeClient(wp<Client> client)
{
Mutex::Autolock lock(mLock);
mClients.remove(client);
}
MediaPlayerService::Client::Client(const sp<MediaPlayerService>& service, pid_t pid,
int32_t connId, const sp<IMediaPlayerClient>& client)
{
LOGV("Client(%d) constructor", connId);
mPid = pid;
mConnId = connId;
mService = service;
mClient = client;
mLoop = false;
mStatus = NO_INIT;
#if CALLBACK_ANTAGONIZER
LOGD("create Antagonizer");
mAntagonizer = new Antagonizer(notify, this);
#endif
}
MediaPlayerService::Client::~Client()
{
LOGV("Client(%d) destructor pid = %d", mConnId, mPid);
mAudioOutput.clear();
wp<Client> client(this);
disconnect();
mService->removeClient(client);
}
void MediaPlayerService::Client::disconnect()
{
LOGV("disconnect(%d) from pid %d", mConnId, mPid);
// grab local reference and clear main reference to prevent future
// access to object
sp<MediaPlayerBase> p;
{
Mutex::Autolock l(mLock);
p = mPlayer;
}
mClient.clear();
mPlayer.clear();
// clear the notification to prevent callbacks to dead client
// and reset the player. We assume the player will serialize
// access to itself if necessary.
if (p != 0) {
p->setNotifyCallback(0, 0);
#if CALLBACK_ANTAGONIZER
LOGD("kill Antagonizer");
mAntagonizer->kill();
#endif
p->reset();
}
IPCThreadState::self()->flushCommands();
}
static player_type getDefaultPlayerType() {
#if BUILD_WITH_FULL_STAGEFRIGHT
char value[PROPERTY_VALUE_MAX];
if (property_get("media.stagefright.enable-player", value, NULL)
&& (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
return STAGEFRIGHT_PLAYER;
}
#endif
return PV_PLAYER;
}
// By default we use the VORBIS_PLAYER for vorbis playback (duh!),
// but if the magic property is set we will use our new experimental
// stagefright code instead.
static player_type OverrideStagefrightForVorbis(player_type player) {
if (player != VORBIS_PLAYER) {
return player;
}
#if BUILD_WITH_FULL_STAGEFRIGHT
char value[PROPERTY_VALUE_MAX];
if (property_get("media.stagefright.enable-vorbis", value, NULL)
&& (!strcmp(value, "1") || !strcmp(value, "true"))) {
return STAGEFRIGHT_PLAYER;
}
#endif
return VORBIS_PLAYER;
}
player_type getPlayerType(int fd, int64_t offset, int64_t length)
{
char buf[20];
lseek(fd, offset, SEEK_SET);
read(fd, buf, sizeof(buf));
lseek(fd, offset, SEEK_SET);
long ident = *((long*)buf);
// Ogg vorbis?
if (ident == 0x5367674f) // 'OggS'
return OverrideStagefrightForVorbis(VORBIS_PLAYER);
#ifndef NO_OPENCORE
if (ident == 0x75b22630) {
// The magic number for .asf files, i.e. wmv and wma content.
// These are not currently supported through stagefright.
return PV_PLAYER;
}
#endif
// Some kind of MIDI?
EAS_DATA_HANDLE easdata;
if (EAS_Init(&easdata) == EAS_SUCCESS) {
EAS_FILE locator;
locator.path = NULL;
locator.fd = fd;
locator.offset = offset;
locator.length = length;
EAS_HANDLE eashandle;
if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
EAS_CloseFile(easdata, eashandle);
EAS_Shutdown(easdata);
return SONIVOX_PLAYER;
}
EAS_Shutdown(easdata);
}
return getDefaultPlayerType();
}
player_type getPlayerType(const char* url)
{
if (TestPlayerStub::canBeUsed(url)) {
return TEST_PLAYER;
}
bool useStagefrightForHTTP = false;
char value[PROPERTY_VALUE_MAX];
if (property_get("media.stagefright.enable-http", value, NULL)
&& (!strcmp(value, "1") || !strcasecmp(value, "true"))) {
useStagefrightForHTTP = true;
}
// use MidiFile for MIDI extensions
int lenURL = strlen(url);
for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
int len = strlen(FILE_EXTS[i].extension);
int start = lenURL - len;
if (start > 0) {
if (!strncmp(url + start, FILE_EXTS[i].extension, len)) {
if (FILE_EXTS[i].playertype == VORBIS_PLAYER
&& !strncasecmp(url, "http://", 7)
&& useStagefrightForHTTP) {
return STAGEFRIGHT_PLAYER;
}
return OverrideStagefrightForVorbis(FILE_EXTS[i].playertype);
}
}
}
if (!strncasecmp(url, "http://", 7)) {
if (!useStagefrightForHTTP) {
return PV_PLAYER;
}
}
// Use PV_PLAYER for rtsp for now
if (!strncasecmp(url, "rtsp://", 7)) {
return PV_PLAYER;
}
return getDefaultPlayerType();
}
static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
notify_callback_f notifyFunc)
{
sp<MediaPlayerBase> p;
switch (playerType) {
#ifndef NO_OPENCORE
case PV_PLAYER:
LOGV(" create PVPlayer");
p = new PVPlayer();
break;
#endif
case SONIVOX_PLAYER:
LOGV(" create MidiFile");
p = new MidiFile();
break;
case VORBIS_PLAYER:
LOGV(" create VorbisPlayer");
p = new VorbisPlayer();
break;
#if BUILD_WITH_FULL_STAGEFRIGHT
case STAGEFRIGHT_PLAYER:
LOGV(" create StagefrightPlayer");
p = new StagefrightPlayer;
break;
#endif
case TEST_PLAYER:
LOGV("Create Test Player stub");
p = new TestPlayerStub();
break;
}
if (p != NULL) {
if (p->initCheck() == NO_ERROR) {
p->setNotifyCallback(cookie, notifyFunc);
} else {
p.clear();
}
}
if (p == NULL) {
LOGE("Failed to create player object");
}
return p;
}
sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
{
// determine if we have the right player type
sp<MediaPlayerBase> p = mPlayer;
if ((p != NULL) && (p->playerType() != playerType)) {
LOGV("delete player");
p.clear();
}
if (p == NULL) {
p = android::createPlayer(playerType, this, notify);
}
return p;
}
status_t MediaPlayerService::Client::setDataSource(
const char *url, const KeyedVector<String8, String8> *headers)
{
LOGV("setDataSource(%s)", url);
if (url == NULL)
return UNKNOWN_ERROR;
if (strncmp(url, "content://", 10) == 0) {
// get a filedescriptor for the content Uri and
// pass it to the setDataSource(fd) method
String16 url16(url);
int fd = android::openContentProviderFile(url16);
if (fd < 0)
{
LOGE("Couldn't open fd for %s", url);
return UNKNOWN_ERROR;
}
setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
close(fd);
return mStatus;
} else {
player_type playerType = getPlayerType(url);
LOGV("player type = %d", playerType);
// create the right type of player
sp<MediaPlayerBase> p = createPlayer(playerType);
if (p == NULL) return NO_INIT;
if (!p->hardwareOutput()) {
mAudioOutput = new AudioOutput();
static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
}
// now set data source
LOGV(" setDataSource");
mStatus = p->setDataSource(url, headers);
if (mStatus == NO_ERROR) {
mPlayer = p;
} else {
LOGE(" error: %d", mStatus);
}
return mStatus;
}
}
status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
{
LOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
struct stat sb;
int ret = fstat(fd, &sb);
if (ret != 0) {
LOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
return UNKNOWN_ERROR;
}
LOGV("st_dev = %llu", sb.st_dev);
LOGV("st_mode = %u", sb.st_mode);
LOGV("st_uid = %lu", sb.st_uid);
LOGV("st_gid = %lu", sb.st_gid);
LOGV("st_size = %llu", sb.st_size);
if (offset >= sb.st_size) {
LOGE("offset error");
::close(fd);
return UNKNOWN_ERROR;
}
if (offset + length > sb.st_size) {
length = sb.st_size - offset;
LOGV("calculated length = %lld", length);
}
player_type playerType = getPlayerType(fd, offset, length);
LOGV("player type = %d", playerType);
// create the right type of player
sp<MediaPlayerBase> p = createPlayer(playerType);
if (p == NULL) return NO_INIT;
if (!p->hardwareOutput()) {
mAudioOutput = new AudioOutput();
static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
}
// now set data source
mStatus = p->setDataSource(fd, offset, length);
if (mStatus == NO_ERROR) mPlayer = p;
return mStatus;
}
status_t MediaPlayerService::Client::setVideoSurface(const sp<ISurface>& surface)
{
LOGV("[%d] setVideoSurface(%p)", mConnId, surface.get());
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->setVideoSurface(surface);
}
status_t MediaPlayerService::Client::invoke(const Parcel& request,
Parcel *reply)
{
sp<MediaPlayerBase> p = getPlayer();
if (p == NULL) return UNKNOWN_ERROR;
return p->invoke(request, reply);
}
// This call doesn't need to access the native player.
status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
{
status_t status;
media::Metadata::Filter allow, drop;
if (unmarshallFilter(filter, &allow, &status) &&
unmarshallFilter(filter, &drop, &status)) {
Mutex::Autolock lock(mLock);
mMetadataAllow = allow;
mMetadataDrop = drop;
}
return status;
}
status_t MediaPlayerService::Client::getMetadata(
bool update_only, bool apply_filter, Parcel *reply)
{
sp<MediaPlayerBase> player = getPlayer();
if (player == 0) return UNKNOWN_ERROR;
status_t status;
// Placeholder for the return code, updated by the caller.
reply->writeInt32(-1);
media::Metadata::Filter ids;
// We don't block notifications while we fetch the data. We clear
// mMetadataUpdated first so we don't lose notifications happening
// during the rest of this call.
{
Mutex::Autolock lock(mLock);
if (update_only) {
ids = mMetadataUpdated;
}
mMetadataUpdated.clear();
}
media::Metadata metadata(reply);
metadata.appendHeader();
status = player->getMetadata(ids, reply);
if (status != OK) {
metadata.resetParcel();
LOGE("getMetadata failed %d", status);
return status;
}
// FIXME: Implement filtering on the result. Not critical since
// filtering takes place on the update notifications already. This
// would be when all the metadata are fetch and a filter is set.
// Everything is fine, update the metadata length.
metadata.updateLength();
return OK;
}
status_t MediaPlayerService::Client::suspend() {
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->suspend();
}
status_t MediaPlayerService::Client::resume() {
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->resume();
}
status_t MediaPlayerService::Client::prepareAsync()
{
LOGV("[%d] prepareAsync", mConnId);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
status_t ret = p->prepareAsync();
#if CALLBACK_ANTAGONIZER
LOGD("start Antagonizer");
if (ret == NO_ERROR) mAntagonizer->start();
#endif
return ret;
}
status_t MediaPlayerService::Client::start()
{
LOGV("[%d] start", mConnId);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
p->setLooping(mLoop);
return p->start();
}
status_t MediaPlayerService::Client::stop()
{
LOGV("[%d] stop", mConnId);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->stop();
}
status_t MediaPlayerService::Client::pause()
{
LOGV("[%d] pause", mConnId);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->pause();
}
status_t MediaPlayerService::Client::isPlaying(bool* state)
{
*state = false;
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
*state = p->isPlaying();
LOGV("[%d] isPlaying: %d", mConnId, *state);
return NO_ERROR;
}
status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
{
LOGV("getCurrentPosition");
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
status_t ret = p->getCurrentPosition(msec);
if (ret == NO_ERROR) {
LOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
} else {
LOGE("getCurrentPosition returned %d", ret);
}
return ret;
}
status_t MediaPlayerService::Client::getDuration(int *msec)
{
LOGV("getDuration");
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
status_t ret = p->getDuration(msec);
if (ret == NO_ERROR) {
LOGV("[%d] getDuration = %d", mConnId, *msec);
} else {
LOGE("getDuration returned %d", ret);
}
return ret;
}
status_t MediaPlayerService::Client::seekTo(int msec)
{
LOGV("[%d] seekTo(%d)", mConnId, msec);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->seekTo(msec);
}
status_t MediaPlayerService::Client::reset()
{
LOGV("[%d] reset", mConnId);
sp<MediaPlayerBase> p = getPlayer();
if (p == 0) return UNKNOWN_ERROR;
return p->reset();
}
status_t MediaPlayerService::Client::setAudioStreamType(int type)
{
LOGV("[%d] setAudioStreamType(%d)", mConnId, type);
// TODO: for hardware output, call player instead
Mutex::Autolock l(mLock);
if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
return NO_ERROR;
}
status_t MediaPlayerService::Client::setLooping(int loop)
{
LOGV("[%d] setLooping(%d)", mConnId, loop);
mLoop = loop;
sp<MediaPlayerBase> p = getPlayer();
if (p != 0) return p->setLooping(loop);
return NO_ERROR;
}
status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
{
LOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
// TODO: for hardware output, call player instead
Mutex::Autolock l(mLock);
if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
return NO_ERROR;
}
void MediaPlayerService::Client::notify(void* cookie, int msg, int ext1, int ext2)
{
Client* client = static_cast<Client*>(cookie);
if (MEDIA_INFO == msg &&
MEDIA_INFO_METADATA_UPDATE == ext1) {
const media::Metadata::Type metadata_type = ext2;
if(client->shouldDropMetadata(metadata_type)) {
return;
}
// Update the list of metadata that have changed. getMetadata
// also access mMetadataUpdated and clears it.
client->addNewMetadataUpdate(metadata_type);
}
LOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
client->mClient->notify(msg, ext1, ext2);
}
bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
{
Mutex::Autolock lock(mLock);
if (findMetadata(mMetadataDrop, code)) {
return true;
}
if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
return false;
} else {
return true;
}
}
void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
Mutex::Autolock lock(mLock);
if (mMetadataUpdated.indexOf(metadata_type) < 0) {
mMetadataUpdated.add(metadata_type);
}
}
#if CALLBACK_ANTAGONIZER
const int Antagonizer::interval = 10000; // 10 msecs
Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
mExit(false), mActive(false), mClient(client), mCb(cb)
{
createThread(callbackThread, this);
}
void Antagonizer::kill()
{
Mutex::Autolock _l(mLock);
mActive = false;
mExit = true;
mCondition.wait(mLock);
}
int Antagonizer::callbackThread(void* user)
{
LOGD("Antagonizer started");
Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
while (!p->mExit) {
if (p->mActive) {
LOGV("send event");
p->mCb(p->mClient, 0, 0, 0);
}
usleep(interval);
}
Mutex::Autolock _l(p->mLock);
p->mCondition.signal();
LOGD("Antagonizer stopped");
return 0;
}
#endif
static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
{
LOGV("decode(%s)", url);
sp<MemoryBase> mem;
sp<MediaPlayerBase> player;
// Protect our precious, precious DRMd ringtones by only allowing
// decoding of http, but not filesystem paths or content Uris.
// If the application wants to decode those, it should open a
// filedescriptor for them and use that.
if (url != NULL && strncmp(url, "http://", 7) != 0) {
LOGD("Can't decode %s by path, use filedescriptor instead", url);
return mem;
}
player_type playerType = getPlayerType(url);
LOGV("player type = %d", playerType);
// create the right type of player
sp<AudioCache> cache = new AudioCache(url);
player = android::createPlayer(playerType, cache.get(), cache->notify);
if (player == NULL) goto Exit;
if (player->hardwareOutput()) goto Exit;
static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
// set data source
if (player->setDataSource(url) != NO_ERROR) goto Exit;
LOGV("prepare");
player->prepareAsync();
LOGV("wait for prepare");
if (cache->wait() != NO_ERROR) goto Exit;
LOGV("start");
player->start();
LOGV("wait for playback complete");
if (cache->wait() != NO_ERROR) goto Exit;
mem = new MemoryBase(cache->getHeap(), 0, cache->size());
*pSampleRate = cache->sampleRate();
*pNumChannels = cache->channelCount();
*pFormat = cache->format();
LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
Exit:
if (player != 0) player->reset();
return mem;
}
sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat)
{
LOGV("decode(%d, %lld, %lld)", fd, offset, length);
sp<MemoryBase> mem;
sp<MediaPlayerBase> player;
player_type playerType = getPlayerType(fd, offset, length);
LOGV("player type = %d", playerType);
// create the right type of player
sp<AudioCache> cache = new AudioCache("decode_fd");
player = android::createPlayer(playerType, cache.get(), cache->notify);
if (player == NULL) goto Exit;
if (player->hardwareOutput()) goto Exit;
static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
// set data source
if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
LOGV("prepare");
player->prepareAsync();
LOGV("wait for prepare");
if (cache->wait() != NO_ERROR) goto Exit;
LOGV("start");
player->start();
LOGV("wait for playback complete");
if (cache->wait() != NO_ERROR) goto Exit;
mem = new MemoryBase(cache->getHeap(), 0, cache->size());
*pSampleRate = cache->sampleRate();
*pNumChannels = cache->channelCount();
*pFormat = cache->format();
LOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
Exit:
if (player != 0) player->reset();
::close(fd);
return mem;
}
/*
* Avert your eyes, ugly hack ahead.
* The following is to support music visualizations.
*/
static const int NUMVIZBUF = 32;
static const int VIZBUFFRAMES = 1024;
static const int BUFTIMEMSEC = NUMVIZBUF * VIZBUFFRAMES * 1000 / 44100;
static const int TOTALBUFTIMEMSEC = NUMVIZBUF * BUFTIMEMSEC;
static bool gotMem = false;
static sp<MemoryHeapBase> heap;
static sp<MemoryBase> mem[NUMVIZBUF];
static uint64_t endTime;
static uint64_t lastReadTime;
static uint64_t lastWriteTime;
static int writeIdx = 0;
static void allocVizBufs() {
if (!gotMem) {
heap = new MemoryHeapBase(NUMVIZBUF * VIZBUFFRAMES * 2, 0, "snooper");
for (int i=0;i<NUMVIZBUF;i++) {
mem[i] = new MemoryBase(heap, VIZBUFFRAMES * 2 * i, VIZBUFFRAMES * 2);
}
endTime = 0;
gotMem = true;
}
}
/*
* Get a buffer of audio data that is about to be played.
* We don't synchronize this because in practice the writer
* is ahead of the reader, and even if we did happen to catch
* a buffer while it's being written, it's just a visualization,
* so no harm done.
*/
static sp<MemoryBase> getVizBuffer() {
allocVizBufs();
lastReadTime = uptimeMillis();
// if there is no recent buffer (yet), just return empty handed
if (lastWriteTime + TOTALBUFTIMEMSEC < lastReadTime) {
//LOGI("@@@@ no audio data to look at yet: %d + %d < %d", (int)lastWriteTime, TOTALBUFTIMEMSEC, (int)lastReadTime);
return NULL;
}
int timedelta = endTime - lastReadTime;
if (timedelta < 0) timedelta = 0;
int framedelta = timedelta * 44100 / 1000;
int headIdx = (writeIdx - framedelta) / VIZBUFFRAMES - 1;
while (headIdx < 0) {
headIdx += NUMVIZBUF;
}
return mem[headIdx];
}
// Append the data to the vizualization buffer
static void makeVizBuffers(const char *data, int len, uint64_t time) {
allocVizBufs();
uint64_t startTime = time;
const int frameSize = 4; // 16 bit stereo sample is 4 bytes
int offset = writeIdx;
int maxoff = heap->getSize() / 2; // in shorts
short *base = (short*)heap->getBase();
short *src = (short*)data;
while (len > 0) {
// Degrade quality by mixing to mono and clearing the lowest 3 bits.
// This should still be good enough for a visualization
base[offset++] = ((int(src[0]) + int(src[1])) >> 1) & ~0x7;
src += 2;
len -= frameSize;
if (offset >= maxoff) {
offset = 0;
}
}
writeIdx = offset;
endTime = time + (len / frameSize) / 44;
//LOGI("@@@ stored buffers from %d to %d", uint32_t(startTime), uint32_t(time));
}
sp<IMemory> MediaPlayerService::snoop()
{
sp<MemoryBase> mem = getVizBuffer();
return mem;
}
#undef LOG_TAG
#define LOG_TAG "AudioSink"
MediaPlayerService::AudioOutput::AudioOutput()
: mCallback(NULL),
mCallbackCookie(NULL) {
mTrack = 0;
mStreamType = AudioSystem::MUSIC;
mLeftVolume = 1.0;
mRightVolume = 1.0;
mLatency = 0;
mMsecsPerFrame = 0;
mNumFramesWritten = 0;
setMinBufferCount();
}
MediaPlayerService::AudioOutput::~AudioOutput()
{
close();
}
void MediaPlayerService::AudioOutput::setMinBufferCount()
{
char value[PROPERTY_VALUE_MAX];
if (property_get("ro.kernel.qemu", value, 0)) {
mIsOnEmulator = true;
mMinBufferCount = 12; // to prevent systematic buffer underrun for emulator
}
}
bool MediaPlayerService::AudioOutput::isOnEmulator()
{
setMinBufferCount();
return mIsOnEmulator;
}
int MediaPlayerService::AudioOutput::getMinBufferCount()
{
setMinBufferCount();
return mMinBufferCount;
}
ssize_t MediaPlayerService::AudioOutput::bufferSize() const
{
if (mTrack == 0) return NO_INIT;
return mTrack->frameCount() * frameSize();
}
ssize_t MediaPlayerService::AudioOutput::frameCount() const
{
if (mTrack == 0) return NO_INIT;
return mTrack->frameCount();
}
ssize_t MediaPlayerService::AudioOutput::channelCount() const
{
if (mTrack == 0) return NO_INIT;
return mTrack->channelCount();
}
ssize_t MediaPlayerService::AudioOutput::frameSize() const
{
if (mTrack == 0) return NO_INIT;
return mTrack->frameSize();
}
uint32_t MediaPlayerService::AudioOutput::latency () const
{
return mLatency;
}
float MediaPlayerService::AudioOutput::msecsPerFrame() const
{
return mMsecsPerFrame;
}
status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
{
if (mTrack == 0) return NO_INIT;
return mTrack->getPosition(position);
}
status_t MediaPlayerService::AudioOutput::open(
uint32_t sampleRate, int channelCount, int format, int bufferCount,
AudioCallback cb, void *cookie)
{
mCallback = cb;
mCallbackCookie = cookie;
// Check argument "bufferCount" against the mininum buffer count
if (bufferCount < mMinBufferCount) {
LOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
bufferCount = mMinBufferCount;
}
LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
if (mTrack) close();
int afSampleRate;
int afFrameCount;
int frameCount;
if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
return NO_INIT;
}
if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
return NO_INIT;
}
frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
AudioTrack *t;
if (mCallback != NULL) {
t = new AudioTrack(
mStreamType,
sampleRate,
format,
(channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
frameCount,
0 /* flags */,
CallbackWrapper,
this);
} else {
t = new AudioTrack(
mStreamType,
sampleRate,
format,
(channelCount == 2) ? AudioSystem::CHANNEL_OUT_STEREO : AudioSystem::CHANNEL_OUT_MONO,
frameCount);
}
if ((t == 0) || (t->initCheck() != NO_ERROR)) {
LOGE("Unable to create audio track");
delete t;
return NO_INIT;
}
LOGV("setVolume");
t->setVolume(mLeftVolume, mRightVolume);
mMsecsPerFrame = 1.e3 / (float) sampleRate;
mLatency = t->latency();
mTrack = t;
return NO_ERROR;
}
void MediaPlayerService::AudioOutput::start()
{
LOGV("start");
if (mTrack) {
mTrack->setVolume(mLeftVolume, mRightVolume);
mTrack->start();
mTrack->getPosition(&mNumFramesWritten);
}
}
void MediaPlayerService::AudioOutput::snoopWrite(const void* buffer, size_t size) {
// Only make visualization buffers if anyone recently requested visualization data
uint64_t now = uptimeMillis();
if (lastReadTime + TOTALBUFTIMEMSEC >= now) {
// Based on the current play counter, the number of frames written and
// the current real time we can calculate the approximate real start
// time of the buffer we're about to write.
uint32_t pos;
mTrack->getPosition(&pos);
// we're writing ahead by this many frames:
int ahead = mNumFramesWritten - pos;
//LOGI("@@@ written: %d, playpos: %d, latency: %d", mNumFramesWritten, pos, mTrack->latency());
// which is this many milliseconds, assuming 44100 Hz:
ahead /= 44;
makeVizBuffers((const char*)buffer, size, now + ahead + mTrack->latency());
lastWriteTime = now;
}
}
ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
{
LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
//LOGV("write(%p, %u)", buffer, size);
if (mTrack) {
snoopWrite(buffer, size);
ssize_t ret = mTrack->write(buffer, size);
mNumFramesWritten += ret / 4; // assume 16 bit stereo
return ret;
}
return NO_INIT;
}
void MediaPlayerService::AudioOutput::stop()
{
LOGV("stop");
if (mTrack) mTrack->stop();
lastWriteTime = 0;
}
void MediaPlayerService::AudioOutput::flush()
{
LOGV("flush");
if (mTrack) mTrack->flush();
}
void MediaPlayerService::AudioOutput::pause()
{
LOGV("pause");
if (mTrack) mTrack->pause();
lastWriteTime = 0;
}
void MediaPlayerService::AudioOutput::close()
{
LOGV("close");
delete mTrack;
mTrack = 0;
}
void MediaPlayerService::AudioOutput::setVolume(float left, float right)
{
LOGV("setVolume(%f, %f)", left, right);
mLeftVolume = left;
mRightVolume = right;
if (mTrack) {
mTrack->setVolume(left, right);
}
}
// static
void MediaPlayerService::AudioOutput::CallbackWrapper(
int event, void *cookie, void *info) {
//LOGV("callbackwrapper");
if (event != AudioTrack::EVENT_MORE_DATA) {
return;
}
AudioOutput *me = (AudioOutput *)cookie;
AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
size_t actualSize = (*me->mCallback)(
me, buffer->raw, buffer->size, me->mCallbackCookie);
buffer->size = actualSize;
if (actualSize > 0) {
me->snoopWrite(buffer->raw, actualSize);
}
}
#undef LOG_TAG
#define LOG_TAG "AudioCache"
MediaPlayerService::AudioCache::AudioCache(const char* name) :
mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
mError(NO_ERROR), mCommandComplete(false)
{
// create ashmem heap
mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
}
uint32_t MediaPlayerService::AudioCache::latency () const
{
return 0;
}
float MediaPlayerService::AudioCache::msecsPerFrame() const
{
return mMsecsPerFrame;
}
status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
{
if (position == 0) return BAD_VALUE;
*position = mSize;
return NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
struct CallbackThread : public Thread {
CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
MediaPlayerBase::AudioSink::AudioCallback cb,
void *cookie);
protected:
virtual ~CallbackThread();
virtual bool threadLoop();
private:
wp<MediaPlayerBase::AudioSink> mSink;
MediaPlayerBase::AudioSink::AudioCallback mCallback;
void *mCookie;
void *mBuffer;
size_t mBufferSize;
CallbackThread(const CallbackThread &);
CallbackThread &operator=(const CallbackThread &);
};
CallbackThread::CallbackThread(
const wp<MediaPlayerBase::AudioSink> &sink,
MediaPlayerBase::AudioSink::AudioCallback cb,
void *cookie)
: mSink(sink),
mCallback(cb),
mCookie(cookie),
mBuffer(NULL),
mBufferSize(0) {
}
CallbackThread::~CallbackThread() {
if (mBuffer) {
free(mBuffer);
mBuffer = NULL;
}
}
bool CallbackThread::threadLoop() {
sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
if (sink == NULL) {
return false;
}
if (mBuffer == NULL) {
mBufferSize = sink->bufferSize();
mBuffer = malloc(mBufferSize);
}
size_t actualSize =
(*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
if (actualSize > 0) {
sink->write(mBuffer, actualSize);
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
status_t MediaPlayerService::AudioCache::open(
uint32_t sampleRate, int channelCount, int format, int bufferCount,
AudioCallback cb, void *cookie)
{
LOGV("open(%u, %d, %d, %d)", sampleRate, channelCount, format, bufferCount);
if (mHeap->getHeapID() < 0) {
return NO_INIT;
}
mSampleRate = sampleRate;
mChannelCount = (uint16_t)channelCount;
mFormat = (uint16_t)format;
mMsecsPerFrame = 1.e3 / (float) sampleRate;
if (cb != NULL) {
mCallbackThread = new CallbackThread(this, cb, cookie);
}
return NO_ERROR;
}
void MediaPlayerService::AudioCache::start() {
if (mCallbackThread != NULL) {
mCallbackThread->run("AudioCache callback");
}
}
void MediaPlayerService::AudioCache::stop() {
if (mCallbackThread != NULL) {
mCallbackThread->requestExitAndWait();
}
}
ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
{
LOGV("write(%p, %u)", buffer, size);
if ((buffer == 0) || (size == 0)) return size;
uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
if (p == NULL) return NO_INIT;
p += mSize;
LOGV("memcpy(%p, %p, %u)", p, buffer, size);
if (mSize + size > mHeap->getSize()) {
LOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
size = mHeap->getSize() - mSize;
}
memcpy(p, buffer, size);
mSize += size;
return size;
}
// call with lock held
status_t MediaPlayerService::AudioCache::wait()
{
Mutex::Autolock lock(mLock);
while (!mCommandComplete) {
mSignal.wait(mLock);
}
mCommandComplete = false;
if (mError == NO_ERROR) {
LOGV("wait - success");
} else {
LOGV("wait - error");
}
return mError;
}
void MediaPlayerService::AudioCache::notify(void* cookie, int msg, int ext1, int ext2)
{
LOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
AudioCache* p = static_cast<AudioCache*>(cookie);
// ignore buffering messages
switch (msg)
{
case MEDIA_ERROR:
LOGE("Error %d, %d occurred", ext1, ext2);
p->mError = ext1;
break;
case MEDIA_PREPARED:
LOGV("prepared");
break;
case MEDIA_PLAYBACK_COMPLETE:
LOGV("playback complete");
break;
default:
LOGV("ignored");
return;
}
// wake up thread
Mutex::Autolock lock(p->mLock);
p->mCommandComplete = true;
p->mSignal.signal();
}
} // namespace android