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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_SOURCE_H_
#define LIVE_SOURCE_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/foundation/AString.h>
#include <media/stagefright/DataSource.h>
#include <utils/Vector.h>
namespace android {
struct ABuffer;
struct NuHTTPDataSource;
struct M3UParser;
struct LiveSource : public DataSource {
LiveSource(const char *url);
virtual status_t initCheck() const;
virtual ssize_t readAt(off_t offset, void *data, size_t size);
virtual uint32_t flags() {
return kWantsPrefetching;
}
protected:
virtual ~LiveSource();
private:
struct BandwidthItem {
AString mURI;
unsigned long mBandwidth;
};
Vector<BandwidthItem> mBandwidthItems;
AString mMasterURL;
AString mURL;
status_t mInitCheck;
sp<M3UParser> mPlaylist;
int32_t mFirstItemSequenceNumber;
size_t mPlaylistIndex;
int64_t mLastFetchTimeUs;
sp<NuHTTPDataSource> mSource;
off_t mSourceSize;
off_t mOffsetBias;
bool mSignalDiscontinuity;
ssize_t mPrevBandwidthIndex;
status_t fetchM3U(const char *url, sp<ABuffer> *buffer);
static int SortByBandwidth(const BandwidthItem *a, const BandwidthItem *b);
bool switchToNext();
bool loadPlaylist(bool fetchMaster);
DISALLOW_EVIL_CONSTRUCTORS(LiveSource);
};
} // namespace android
#endif // LIVE_SOURCE_H_
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