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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.
*/
#ifndef LIVE_SESSION_H_
#define LIVE_SESSION_H_
#include <media/stagefright/foundation/AHandler.h>
namespace android {
struct ABuffer;
struct DataSource;
struct LiveDataSource;
struct M3UParser;
struct NuHTTPDataSource;
struct LiveSession : public AHandler {
LiveSession();
sp<DataSource> getDataSource();
void connect(const char *url);
void disconnect();
// Blocks until seek is complete.
void seekTo(int64_t timeUs);
status_t getDuration(int64_t *durationUs);
bool isSeekable();
protected:
virtual ~LiveSession();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
enum {
kMaxNumQueuedFragments = 2,
kMaxNumRetries = 3,
};
static const int64_t kMaxPlaylistAgeUs;
enum {
kWhatConnect = 'conn',
kWhatDisconnect = 'disc',
kWhatMonitorQueue = 'moni',
kWhatSeek = 'seek',
};
struct BandwidthItem {
AString mURI;
unsigned long mBandwidth;
};
sp<LiveDataSource> mDataSource;
sp<NuHTTPDataSource> mHTTPDataSource;
AString mMasterURL;
Vector<BandwidthItem> mBandwidthItems;
KeyedVector<AString, sp<ABuffer> > mAESKeyForURI;
ssize_t mPrevBandwidthIndex;
int64_t mLastPlaylistFetchTimeUs;
sp<M3UParser> mPlaylist;
int32_t mSeqNumber;
int64_t mSeekTimeUs;
int32_t mNumRetries;
Mutex mLock;
Condition mCondition;
int64_t mDurationUs;
bool mSeekDone;
int32_t mMonitorQueueGeneration;
void onConnect(const sp<AMessage> &msg);
void onDisconnect();
void onDownloadNext();
void onMonitorQueue();
void onSeek(const sp<AMessage> &msg);
status_t fetchFile(const char *url, sp<ABuffer> *out);
sp<M3UParser> fetchPlaylist(const char *url);
size_t getBandwidthIndex();
status_t decryptBuffer(
size_t playlistIndex, const sp<ABuffer> &buffer);
void postMonitorQueue(int64_t delayUs = 0);
static int SortByBandwidth(const BandwidthItem *, const BandwidthItem *);
DISALLOW_EVIL_CONSTRUCTORS(LiveSession);
};
} // namespace android
#endif // LIVE_SESSION_H_
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