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/*
* Copyright (C) 2011 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 HTTP_BASE_H_
#define HTTP_BASE_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/MediaErrors.h>
#include <utils/threads.h>
namespace android {
struct HTTPBase : public DataSource {
enum Flags {
// Don't log any URLs.
kFlagIncognito = 1
};
HTTPBase();
virtual status_t connect(
const char *uri,
const KeyedVector<String8, String8> *headers = NULL,
off64_t offset = 0) = 0;
virtual void disconnect() = 0;
// Returns true if bandwidth could successfully be estimated,
// false otherwise.
virtual bool estimateBandwidth(int32_t *bandwidth_bps);
virtual status_t getEstimatedBandwidthKbps(int32_t *kbps);
virtual status_t setBandwidthStatCollectFreq(int32_t freqMs);
static void RegisterSocketUserTag(int sockfd, uid_t uid, uint32_t kTag);
static void UnRegisterSocketUserTag(int sockfd);
static void RegisterSocketUserMark(int sockfd, uid_t uid);
static void UnRegisterSocketUserMark(int sockfd);
protected:
void addBandwidthMeasurement(size_t numBytes, int64_t delayUs);
private:
struct BandwidthEntry {
int64_t mDelayUs;
size_t mNumBytes;
};
Mutex mLock;
List<BandwidthEntry> mBandwidthHistory;
size_t mNumBandwidthHistoryItems;
int64_t mTotalTransferTimeUs;
size_t mTotalTransferBytes;
enum {
kMinBandwidthCollectFreqMs = 1000, // 1 second
kMaxBandwidthCollectFreqMs = 60000, // one minute
};
int64_t mPrevBandwidthMeasureTimeUs;
int32_t mPrevEstimatedBandWidthKbps;
int32_t mBandWidthCollectFreqMs;
DISALLOW_EVIL_CONSTRUCTORS(HTTPBase);
};
} // namespace android
#endif // HTTP_BASE_H_
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