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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 NU_HTTP_DATA_SOURCE_H_
#define NU_HTTP_DATA_SOURCE_H_
#include <media/stagefright/DataSource.h>
#include <utils/List.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include "HTTPStream.h"
namespace android {
struct NuHTTPDataSource : public DataSource {
enum Flags {
// Don't log any URLs.
kFlagIncognito = 1
};
NuHTTPDataSource(uint32_t flags = 0);
status_t connect(
const char *uri,
const KeyedVector<String8, String8> *headers = NULL,
off64_t offset = 0);
void disconnect();
virtual status_t initCheck() const;
virtual ssize_t readAt(off64_t offset, void *data, size_t size);
virtual status_t getSize(off64_t *size);
virtual uint32_t flags();
// Returns true if bandwidth could successfully be estimated,
// false otherwise.
bool estimateBandwidth(int32_t *bandwidth_bps);
virtual DecryptHandle* DrmInitialization();
virtual void getDrmInfo(DecryptHandle **handle, DrmManagerClient **client);
virtual String8 getUri();
protected:
virtual ~NuHTTPDataSource();
private:
enum State {
DISCONNECTED,
CONNECTING,
CONNECTED
};
struct BandwidthEntry {
int64_t mDelayUs;
size_t mNumBytes;
};
Mutex mLock;
uint32_t mFlags;
State mState;
String8 mHost;
unsigned mPort;
String8 mPath;
bool mHTTPS;
String8 mHeaders;
String8 mUri;
HTTPStream mHTTP;
off64_t mOffset;
off64_t mContentLength;
bool mContentLengthValid;
bool mHasChunkedTransferEncoding;
// The number of data bytes in the current chunk before any subsequent
// chunk header (or -1 if no more chunks).
ssize_t mChunkDataBytesLeft;
List<BandwidthEntry> mBandwidthHistory;
size_t mNumBandwidthHistoryItems;
int64_t mTotalTransferTimeUs;
size_t mTotalTransferBytes;
int64_t mPrevBandwidthMeasureTimeUs;
DecryptHandle *mDecryptHandle;
DrmManagerClient *mDrmManagerClient;
status_t connect(
const char *uri, const String8 &headers, off64_t offset);
status_t connect(
const char *host, unsigned port, const char *path,
bool https,
const String8 &headers,
off64_t offset);
// Read up to "size" bytes of data, respect transfer encoding.
ssize_t internalRead(void *data, size_t size);
void applyTimeoutResponse();
void addBandwidthMeasurement_l(size_t numBytes, int64_t delayUs);
static void MakeFullHeaders(
const KeyedVector<String8, String8> *overrides,
String8 *headers);
NuHTTPDataSource(const NuHTTPDataSource &);
NuHTTPDataSource &operator=(const NuHTTPDataSource &);
};
} // namespace android
#endif // NU_HTTP_DATA_SOURCE_H_
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