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/*
* Copyright (C) 2010 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.
*/
#include <binder/ProcessState.h>
#include <sys/stat.h>
#include <media/AudioTrack.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AHandler.h>
#include <media/stagefright/foundation/ALooper.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/FileSource.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/OMXClient.h>
#include <media/stagefright/OMXCodec.h>
#include "NuCachedSource2.h"
#include "NuHTTPDataSource.h"
#include "ThrottledSource.h"
#define DURATION_CACHED_HIGH_US 30000000 // 30s
#define DURATION_CACHED_MED_US 10000000 // 10s
#define DURATION_CACHED_LOW_US 2000000 // 2s
/*
* by how much time data is written to the AudioTrack ahead of the scheduled render time
*/
#define RENDER_SAFETY_DELAY_US 5000 // 5ms
#define SIZE_CACHED_HIGH_BYTES 1000000
#define SIZE_CACHED_MED_BYTES 700000
#define SIZE_CACHED_LOW_BYTES 400000
/*
* events sent to mNotifyClient during prepare, prefetch, and playback
*/
#define EVENT_PREPARED "prep"
#define EVENT_PREFETCHSTATUSCHANGE "prsc"
#define EVENT_PREFETCHFILLLEVELUPDATE "pflu"
#define EVENT_ENDOFSTREAM "eos"
#define EVENT_NEW_AUDIOTRACK "nwat"
#define SFPLAYER_SUCCESS 1
#define SFPLAYER_FD_FIND_FILE_SIZE ((int64_t)0xFFFFFFFFFFFFFFFFll)
#define NO_FILL_LEVEL_UPDATE -1
#define NO_STATUS_UPDATE kStatusUnknown
typedef struct AudioPlayback_Parameters_struct {
int streamType;
int sessionId;
android::AudioTrack::callback_t trackcb;
void* trackcbUser;
} AudioPlayback_Parameters;
namespace android {
typedef void (*notif_client_t)(int event, const int data1, void* notifUser);
struct SfPlayer : public AHandler {
SfPlayer(AudioPlayback_Parameters *app);
enum CacheStatus {
kStatusUnknown = -1,
kStatusEmpty = 0,
kStatusLow,
kStatusIntermediate,
kStatusEnough,
kStatusHigh
};
enum {
kEventPrepared = 'prep',
kEventPrefetchStatusChange = 'prsc',
kEventPrefetchFillLevelUpdate = 'pflu',
kEventEndOfStream = 'eos',
kEventNewAudioTrack = 'nwat'
};
void armLooper();
void setNotifListener(const notif_client_t cbf, void* notifUser);
void setDataSource(const char *uri);
void setDataSource(const int fd, const int64_t offset, const int64_t length);
void setCacheFillUpdateThreshold(int16_t thr) { mCacheFillNotifThreshold = thr; }
void prepare();
void play();
void pause();
void stop();
void seek(int64_t timeMsec);
void loop(bool loop);
bool wantPrefetch();
void startPrefetch_async();
/**
* returns the duration in microseconds, -1 if unknown
*/
int64_t getDurationUsec() { return mDurationUsec; }
int32_t getNumChannels() { return mNumChannels; }
int32_t getSampleRateHz() { return mSampleRateHz; }
AudioTrack* getAudioTrack() { return mAudioTrack; }
uint32_t getPositionMsec();
protected:
virtual ~SfPlayer();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
enum {
kDataLocatorNone = 'none',
kDataLocatorUri = 'uri',
kDataLocatorFd = 'fd',
};
enum {
kWhatPrepare = 'prep',
kWhatDecode = 'deco',
kWhatRender = 'rend',
kWhatCheckCache = 'cach',
kWhatNotif = 'noti',
kWhatPlay = 'play',
kWhatPause = 'paus',
kWhatSeek = 'seek',
kWhatLoop = 'loop',
};
enum {
kFlagPlaying = 1,
kFlagPreparing = 2,
kFlagBuffering = 4,
kFlagSeeking = 8,
kFlagLooping = 16,
};
struct FdInfo {
int fd;
int64_t offset;
int64_t length;
};
union DataLocator {
char* uri;
FdInfo fdi;
};
// mutex used for seek flag and seek time read/write
Mutex mSeekLock;
AudioTrack *mAudioTrack;
sp<ALooper> mRenderLooper;
sp<DataSource> mDataSource;
sp<MediaSource> mAudioSource;
uint32_t mFlags;
int64_t mBitrate; // in bits/sec
int32_t mNumChannels;
int32_t mSampleRateHz;
int64_t mTimeDelta;
int64_t mDurationUsec;
CacheStatus mCacheStatus;
int64_t mSeekTimeMsec;
int64_t mLastDecodedPositionUs;
int16_t mCacheFill; // cache fill level in permille
int16_t mLastNotifiedCacheFill; // last cache fill level communicated to the listener
int16_t mCacheFillNotifThreshold; // threshold in cache fill level for cache fill to be reported
AudioPlayback_Parameters mPlaybackParams;
DataLocator mDataLocator;
int mDataLocatorType;
notif_client_t mNotifyClient;
void* mNotifyUser;
// mutex used for protecting the decode buffer
Mutex mDecodeBufferLock;
// buffer passed from decoder to renderer
MediaBuffer *mDecodeBuffer;
// message handlers
void onPrepare(const sp<AMessage> &msg);
void onDecode();
void onRender(const sp<AMessage> &msg);
void onCheckCache(const sp<AMessage> &msg);
void onNotify(const sp<AMessage> &msg);
void onPlay();
void onPause();
void onSeek(const sp<AMessage> &msg);
void onLoop(const sp<AMessage> &msg);
CacheStatus getCacheRemaining(bool *eos);
int64_t getPositionUsec();
void reachedEndOfStream();
void updatePlaybackParamsFromSource();
void notifyStatus();
void notifyCacheFill();
void notifyPrepared(status_t prepareRes);
void notify(const sp<AMessage> &msg, bool async);
void resetDataLocator();
DISALLOW_EVIL_CONSTRUCTORS(SfPlayer);
};
} // namespace android
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