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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 PLAYBACK_SESSION_H_
#define PLAYBACK_SESSION_H_
#include "WifiDisplaySource.h"
namespace android {
struct ABuffer;
struct BufferQueue;
struct IHDCP;
struct ISurfaceTexture;
struct MediaPuller;
struct MediaSource;
struct TSPacketizer;
#define LOG_TRANSPORT_STREAM 0
#define ENABLE_RETRANSMISSION 0
// Encapsulates the state of an RTP/RTCP session in the context of wifi
// display.
struct WifiDisplaySource::PlaybackSession : public AHandler {
PlaybackSession(
const sp<ANetworkSession> &netSession,
const sp<AMessage> ¬ify,
const struct in_addr &interfaceAddr,
const sp<IHDCP> &hdcp);
enum TransportMode {
TRANSPORT_UDP,
TRANSPORT_TCP_INTERLEAVED,
TRANSPORT_TCP,
};
status_t init(
const char *clientIP, int32_t clientRtp, int32_t clientRtcp,
TransportMode transportMode);
status_t destroy();
int32_t getRTPPort() const;
int64_t getLastLifesignUs() const;
void updateLiveness();
status_t play();
status_t finishPlay();
status_t pause();
sp<ISurfaceTexture> getSurfaceTexture();
int32_t width() const;
int32_t height() const;
void requestIDRFrame();
enum {
kWhatSessionDead,
kWhatBinaryData,
kWhatSessionEstablished,
};
protected:
virtual void onMessageReceived(const sp<AMessage> &msg);
virtual ~PlaybackSession();
private:
struct Track;
enum {
kWhatSendSR,
kWhatRTPNotify,
kWhatRTCPNotify,
#if ENABLE_RETRANSMISSION
kWhatRTPRetransmissionNotify,
kWhatRTCPRetransmissionNotify,
#endif
kWhatMediaPullerNotify,
kWhatConverterNotify,
kWhatUpdateSurface,
kWhatFinishPlay,
};
static const int64_t kSendSRIntervalUs = 10000000ll;
static const uint32_t kSourceID = 0xdeadbeef;
static const size_t kMaxHistoryLength = 128;
#if ENABLE_RETRANSMISSION
static const size_t kRetransmissionPortOffset = 120;
#endif
sp<ANetworkSession> mNetSession;
sp<AMessage> mNotify;
in_addr mInterfaceAddr;
sp<IHDCP> mHDCP;
bool mWeAreDead;
int64_t mLastLifesignUs;
sp<TSPacketizer> mPacketizer;
sp<BufferQueue> mBufferQueue;
KeyedVector<size_t, sp<Track> > mTracks;
ssize_t mVideoTrackIndex;
sp<ABuffer> mTSQueue;
int64_t mPrevTimeUs;
TransportMode mTransportMode;
AString mClientIP;
bool mAllTracksHavePacketizerIndex;
// in TCP mode
int32_t mRTPChannel;
int32_t mRTCPChannel;
// in UDP mode
int32_t mRTPPort;
int32_t mRTPSessionID;
int32_t mRTCPSessionID;
#if ENABLE_RETRANSMISSION
int32_t mRTPRetransmissionSessionID;
int32_t mRTCPRetransmissionSessionID;
#endif
int32_t mClientRTPPort;
int32_t mClientRTCPPort;
bool mRTPConnected;
bool mRTCPConnected;
uint32_t mRTPSeqNo;
#if ENABLE_RETRANSMISSION
uint32_t mRTPRetransmissionSeqNo;
#endif
uint64_t mLastNTPTime;
uint32_t mLastRTPTime;
uint32_t mNumRTPSent;
uint32_t mNumRTPOctetsSent;
uint32_t mNumSRsSent;
bool mSendSRPending;
int64_t mFirstPacketTimeUs;
List<sp<ABuffer> > mHistory;
size_t mHistoryLength;
uint64_t mTotalBytesSent;
#if LOG_TRANSPORT_STREAM
FILE *mLogFile;
#endif
void onSendSR();
void addSR(const sp<ABuffer> &buffer);
void addSDES(const sp<ABuffer> &buffer);
static uint64_t GetNowNTP();
status_t setupPacketizer();
status_t addSource(
bool isVideo,
const sp<MediaSource> &source,
size_t *numInputBuffers);
status_t addVideoSource();
status_t addAudioSource();
ssize_t appendTSData(
const void *data, size_t size, bool timeDiscontinuity, bool flush);
void scheduleSendSR();
status_t parseRTCP(const sp<ABuffer> &buffer);
#if ENABLE_RETRANSMISSION
status_t parseTSFB(const uint8_t *data, size_t size);
#endif
status_t sendPacket(int32_t sessionID, const void *data, size_t size);
status_t onFinishPlay();
status_t onFinishPlay2();
bool allTracksHavePacketizerIndex();
status_t packetizeAccessUnit(
size_t trackIndex, sp<ABuffer> accessUnit);
status_t packetizeQueuedAccessUnits();
void notifySessionDead();
DISALLOW_EVIL_CONSTRUCTORS(PlaybackSession);
};
} // namespace android
#endif // PLAYBACK_SESSION_H_
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