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/*
* Copyright 2013, 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 RTP_SENDER_H_
#define RTP_SENDER_H_
#include "RTPBase.h"
#include <media/stagefright/foundation/AHandler.h>
namespace android {
struct ABuffer;
struct ANetworkSession;
// An object of this class facilitates sending of media data over an RTP
// channel. The channel is established over a UDP or TCP connection depending
// on which "TransportMode" was chosen. In addition different RTP packetization
// schemes are supported such as "Transport Stream Packets over RTP",
// or "AVC/H.264 encapsulation as specified in RFC 3984 (non-interleaved mode)"
struct RTPSender : public RTPBase, public AHandler {
enum {
kWhatInitDone,
kWhatError,
kWhatNetworkStall,
kWhatInformSender,
};
RTPSender(
const sp<ANetworkSession> &netSession,
const sp<AMessage> ¬ify);
status_t initAsync(
const char *remoteHost,
int32_t remoteRTPPort,
TransportMode rtpMode,
int32_t remoteRTCPPort,
TransportMode rtcpMode,
int32_t *outLocalRTPPort);
status_t queueBuffer(
const sp<ABuffer> &buffer,
uint8_t packetType,
PacketizationMode mode);
protected:
virtual ~RTPSender();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
enum {
kWhatRTPNotify,
kWhatRTCPNotify,
};
enum {
kMaxNumTSPacketsPerRTPPacket = (kMaxUDPPacketSize - 12) / 188,
kMaxHistorySize = 1024,
kSourceID = 0xdeadbeef,
};
sp<ANetworkSession> mNetSession;
sp<AMessage> mNotify;
TransportMode mRTPMode;
TransportMode mRTCPMode;
int32_t mRTPSessionID;
int32_t mRTCPSessionID;
bool mRTPConnected;
bool mRTCPConnected;
uint64_t mLastNTPTime;
uint32_t mLastRTPTime;
uint32_t mNumRTPSent;
uint32_t mNumRTPOctetsSent;
uint32_t mNumSRsSent;
uint32_t mRTPSeqNo;
List<sp<ABuffer> > mHistory;
size_t mHistorySize;
static uint64_t GetNowNTP();
status_t queueRawPacket(const sp<ABuffer> &tsPackets, uint8_t packetType);
status_t queueTSPackets(const sp<ABuffer> &tsPackets, uint8_t packetType);
status_t queueAVCBuffer(const sp<ABuffer> &accessUnit, uint8_t packetType);
status_t sendRTPPacket(
const sp<ABuffer> &packet, bool storeInHistory,
bool timeValid = false, int64_t timeUs = -1ll);
void onNetNotify(bool isRTP, const sp<AMessage> &msg);
status_t onRTCPData(const sp<ABuffer> &data);
status_t parseReceiverReport(const uint8_t *data, size_t size);
status_t parseTSFB(const uint8_t *data, size_t size);
status_t parseAPP(const uint8_t *data, size_t size);
void notifyInitDone(status_t err);
void notifyError(status_t err);
void notifyNetworkStall(size_t numBytesQueued);
DISALLOW_EVIL_CONSTRUCTORS(RTPSender);
};
} // namespace android
#endif // RTP_SENDER_H_
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