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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>
#include <netinet/in.h>
namespace android {
#define REQUIRE_HDCP 0
struct IHDCP;
struct IRemoteDisplayClient;
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,
const sp<IRemoteDisplayClient> &client);
status_t start(const char *iface);
status_t stop();
protected:
virtual ~WifiDisplaySource();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
struct PlaybackSession;
#if REQUIRE_HDCP
struct HDCPObserver;
#endif
enum {
kWhatStart,
kWhatRTSPNotify,
kWhatStop,
kWhatReapDeadClients,
kWhatPlaybackSessionNotify,
kWhatKeepAlive,
kWhatHDCPNotify,
};
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;
sp<IRemoteDisplayClient> mClient;
struct in_addr mInterfaceAddr;
int32_t mSessionID;
uint32_t mStopReplyID;
int32_t mClientSessionID;
struct ClientInfo {
AString mRemoteIP;
AString mLocalIP;
int32_t mLocalPort;
int32_t mPlaybackSessionID;
sp<PlaybackSession> mPlaybackSession;
};
ClientInfo mClientInfo;
bool mReaperPending;
int32_t mNextCSeq;
KeyedVector<ResponseID, HandleRTSPResponseFunc> mResponseHandlers;
#if REQUIRE_HDCP
bool mIsHDCP2_0;
int32_t mHDCPPort;
sp<IHDCP> mHDCP;
sp<HDCPObserver> mHDCPObserver;
bool mHDCPInitializationComplete;
bool mSetupTriggerDeferred;
status_t makeHDCP();
#endif
status_t sendM1(int32_t sessionID);
status_t sendM3(int32_t sessionID);
status_t sendM4(int32_t sessionID);
status_t sendM5(int32_t sessionID, bool requestShutdown);
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);
status_t onReceiveClientData(const sp<AMessage> &msg);
status_t onOptionsRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t onSetupRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t onPlayRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t onPauseRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t onTeardownRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t onGetParameterRequest(
int32_t sessionID,
int32_t cseq,
const sp<ParsedMessage> &data);
status_t 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;
// Disconnects the current client and shuts down its playback session
// (if any). The reason for the disconnection is OK for orderly shutdown
// or a nonzero error code.
// A listener is notified accordingly.
void disconnectClient(status_t err);
void finishStop();
void finishStop2();
DISALLOW_EVIL_CONSTRUCTORS(WifiDisplaySource);
};
} // namespace android
#endif // WIFI_DISPLAY_SOURCE_H_
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