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/*
* Copyright 2012, 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 WIFI_DISPLAY_SOURCE_H_
#define WIFI_DISPLAY_SOURCE_H_
#include "ANetworkSession.h"
#include <media/stagefright/foundation/AHandler.h>
namespace android {
struct ParsedMessage;
// Represents the RTSP server acting as a wifi display source.
// Manages incoming connections, sets up Playback sessions as necessary.
struct WifiDisplaySource : public AHandler {
static const unsigned kWifiDisplayDefaultPort = 7236;
WifiDisplaySource(const sp<ANetworkSession> &netSession);
status_t start(const char *iface);
status_t stop();
protected:
virtual ~WifiDisplaySource();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
struct PlaybackSession;
enum {
kWhatStart,
kWhatRTSPNotify,
kWhatStop,
kWhatReapDeadClients,
kWhatPlaybackSessionNotify,
kWhatKeepAlive,
};
struct ResponseID {
int32_t mSessionID;
int32_t mCSeq;
bool operator<(const ResponseID &other) const {
return mSessionID < other.mSessionID
|| (mSessionID == other.mSessionID
&& mCSeq < other.mCSeq);
}
};
typedef status_t (WifiDisplaySource::*HandleRTSPResponseFunc)(
int32_t sessionID, const sp<ParsedMessage> &msg);
static const int64_t kReaperIntervalUs = 1000000ll;
static const int64_t kPlaybackSessionTimeoutSecs = 30;
static const int64_t kPlaybackSessionTimeoutUs =
kPlaybackSessionTimeoutSecs * 1000000ll;
sp<ANetworkSession> mNetSession;
int32_t mSessionID;
struct ClientInfo {
AString mRemoteIP;
AString mLocalIP;
int32_t mLocalPort;
int32_t mPlaybackSessionID;
};
// by sessionID.
KeyedVector<int32_t, ClientInfo> mClientInfos;
bool mReaperPending;
int32_t mNextCSeq;
KeyedVector<ResponseID, HandleRTSPResponseFunc> mResponseHandlers;
KeyedVector<int32_t, sp<PlaybackSession> > mPlaybackSessions;
status_t sendM1(int32_t sessionID);
status_t sendM3(int32_t sessionID);
status_t sendM4(int32_t sessionID);
status_t sendM5(int32_t sessionID);
status_t sendM16(int32_t sessionID);
status_t onReceiveM1Response(
int32_t sessionID, const sp<ParsedMessage> &msg);
status_t onReceiveM3Response(
int32_t sessionID, const sp<ParsedMessage> &msg);
status_t onReceiveM4Response(
int32_t sessionID, const sp<ParsedMessage> &msg);
status_t onReceiveM5Response(
int32_t sessionID, const sp<ParsedMessage> &msg);
status_t onReceiveM16Response(
int32_t sessionID, const sp<ParsedMessage> &msg);
void registerResponseHandler(
int32_t sessionID, int32_t cseq, HandleRTSPResponseFunc func);
void onReceiveClientData(const sp<AMessage> &msg);
void onDescribeRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onOptionsRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onSetupRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onPlayRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onPauseRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onTeardownRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onGetParameterRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void onSetParameterRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
void sendErrorResponse(
int32_t sessionID,
const char *errorDetail,
int32_t cseq);
static void AppendCommonResponse(
AString *response, int32_t cseq, int32_t playbackSessionID = -1ll);
void scheduleReaper();
void scheduleKeepAlive(int32_t sessionID);
int32_t makeUniquePlaybackSessionID() const;
sp<PlaybackSession> findPlaybackSession(
const sp<ParsedMessage> &data, int32_t *playbackSessionID) const;
DISALLOW_EVIL_CONSTRUCTORS(WifiDisplaySource);
};
} // namespace android
#endif // WIFI_DISPLAY_SOURCE_H_
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