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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>
#include <utils/String8.h>
namespace android {
struct ABuffer;
struct AnotherPacketSource;
struct DataSource;
struct HTTPBase;
struct LiveDataSource;
struct M3UParser;
struct PlaylistFetcher;
struct Parcel;
struct LiveSession : public AHandler {
enum Flags {
// Don't log any URLs.
kFlagIncognito = 1,
};
LiveSession(
const sp<AMessage> ¬ify,
uint32_t flags = 0, bool uidValid = false, uid_t uid = 0);
enum StreamType {
STREAMTYPE_AUDIO = 1,
STREAMTYPE_VIDEO = 2,
STREAMTYPE_SUBTITLES = 4,
};
status_t dequeueAccessUnit(StreamType stream, sp<ABuffer> *accessUnit);
status_t getStreamFormat(StreamType stream, sp<AMessage> *format);
void connectAsync(
const char *url,
const KeyedVector<String8, String8> *headers = NULL);
status_t disconnect();
// Blocks until seek is complete.
status_t seekTo(int64_t timeUs);
status_t getDuration(int64_t *durationUs) const;
status_t getTrackInfo(Parcel *reply) const;
status_t selectTrack(size_t index, bool select);
bool isSeekable() const;
bool hasDynamicDuration() const;
enum {
kWhatStreamsChanged,
kWhatError,
kWhatPrepared,
kWhatPreparationFailed,
};
protected:
virtual ~LiveSession();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
friend struct PlaylistFetcher;
enum {
kWhatConnect = 'conn',
kWhatDisconnect = 'disc',
kWhatSeek = 'seek',
kWhatFetcherNotify = 'notf',
kWhatCheckBandwidth = 'bndw',
kWhatChangeConfiguration = 'chC0',
kWhatChangeConfiguration2 = 'chC2',
kWhatChangeConfiguration3 = 'chC3',
kWhatFinishDisconnect2 = 'fin2',
};
struct BandwidthItem {
size_t mPlaylistIndex;
unsigned long mBandwidth;
};
struct FetcherInfo {
sp<PlaylistFetcher> mFetcher;
int64_t mDurationUs;
bool mIsPrepared;
};
sp<AMessage> mNotify;
uint32_t mFlags;
bool mUIDValid;
uid_t mUID;
bool mInPreparationPhase;
sp<HTTPBase> mHTTPDataSource;
KeyedVector<String8, String8> mExtraHeaders;
AString mMasterURL;
Vector<BandwidthItem> mBandwidthItems;
ssize_t mPrevBandwidthIndex;
sp<M3UParser> mPlaylist;
KeyedVector<AString, FetcherInfo> mFetcherInfos;
AString mAudioURI, mVideoURI, mSubtitleURI;
uint32_t mStreamMask;
KeyedVector<StreamType, sp<AnotherPacketSource> > mPacketSources;
int32_t mCheckBandwidthGeneration;
size_t mContinuationCounter;
sp<AMessage> mContinuation;
int64_t mLastDequeuedTimeUs;
int64_t mRealTimeBaseUs;
bool mReconfigurationInProgress;
uint32_t mDisconnectReplyID;
sp<PlaylistFetcher> addFetcher(const char *uri);
void onConnect(const sp<AMessage> &msg);
status_t onSeek(const sp<AMessage> &msg);
void onFinishDisconnect2();
status_t fetchFile(
const char *url, sp<ABuffer> *out,
int64_t range_offset = 0, int64_t range_length = -1);
sp<M3UParser> fetchPlaylist(
const char *url, uint8_t *curPlaylistHash, bool *unchanged);
size_t getBandwidthIndex();
static int SortByBandwidth(const BandwidthItem *, const BandwidthItem *);
void changeConfiguration(
int64_t timeUs, size_t bandwidthIndex, bool pickTrack = false);
void onChangeConfiguration(const sp<AMessage> &msg);
void onChangeConfiguration2(const sp<AMessage> &msg);
void onChangeConfiguration3(const sp<AMessage> &msg);
void scheduleCheckBandwidthEvent();
void cancelCheckBandwidthEvent();
void onCheckBandwidth();
void finishDisconnect();
void postPrepared(status_t err);
DISALLOW_EVIL_CONSTRUCTORS(LiveSession);
};
} // namespace android
#endif // LIVE_SESSION_H_
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