如何让Android平台像IPC一样实现GB28181前端设备接入

技术背景

好多开发者在做国标对接的时候,首先想到的是IPC摄像头,通过参数化配置,接入到国标平台,实现媒体数据的按需查看等操作。

像执法记录仪等智能终端,跑在Android平台,对接GB28181平台的需求也非常大,网上相关demo也不少,但真正设计符合相关协议规范、功能完善、长时间稳定运行的并不多。基于此,我们研发了Android平台GB28181接入模块,目前功能设计,总的来说,IPC有的功能要有,IPC缺失的,但是对业务诉求有要求的,也要有,比如MobilePosition实时位置上报,实时快照、本地录像、屏幕采集、拉取RTSP或RTMP对接到GB28181平台、实时动态水印、实时音量调节、外部编码前后对接等:

如何让Android平台像IPC一样实现GB28181前端设备接入

  • [视频格式]H.264/H.265(Android H.265硬编码);
  • [音频格式]G.711 A律、AAC;
  • [音量调节]Android平台采集端支持实时音量调节;
  • [H.264硬编码]支持H.264特定机型硬编码;
  • [H.265硬编码]支持H.265特定机型硬编码;
  • [软硬编码参数配置]支持gop间隔、帧率、bit-rate设置;
  • [软编码参数配置]支持软编码profile、软编码速度、可变码率设置;
  • 支持横屏、竖屏推流;
  • Android平台支持后台service推送屏幕(推送屏幕需要5.0+版本);
  • 支持纯视频、音视频PS打包传输;
  • 支持RTP OVER UDP和RTP OVER TCP被动模式;
  • 支持信令通道网络传输协议TCP/UDP设置;
  • 支持注册、注销,支持注册刷新及注册有效期设置;
  • 支持设备目录查询应答;
  • 支持心跳机制,支持心跳间隔、心跳检测次数设置;
  • 支持移动设备位置(MobilePosition)订阅和通知;
  • 支持国标GB/T28181—2016平台接入;
  • 支持语音广播及语音对讲;
  • [实时水印]支持动态文字水印、png水印;
  • [镜像]Android平台支持前置摄像头实时镜像功能;
  • [实时静音]支持实时静音/取消静音;
  • [实时快照]支持实时快照;
  • [降噪]支持环境音、手机干扰等引起的噪音降噪处理、自动增益、VAD检测;
  • [外部编码前视频数据对接]支持YUV数据对接;
  • [外部编码前音频数据对接]支持PCM对接;
  • [外部编码后视频数据对接]支持外部H.264数据对接;
  • [外部编码后音频数据对接]外部AAC数据对接;
  • [扩展录像功能]支持录像相关功能。

技术接口设计

接口设计这块,我们分三个部分:一个是供Publisher实例调用的接口,一个是RTP发送相关的接口,还有一个是针对语音广播这块,实现的接收RTP数据播放接口。

先说供GB28181推送实例调用的接口:

  /*+++++++++++++++GB28181相关接口+++++++++++++++*/

/**
* 设置GB28181 RTP Sender
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param rtp_payload_type, 对于GB28181 PS, 协议定义是96, 具体以SDP为准
*
* @return {0} if successful
*/
public native int SetGB28181RTPSender(long handle, long rtp_sender_handle, int rtp_payload_type);

/**
* 启动 GB28181 媒体流
*
* @return {0} if successful
*/
public native int StartGB28181MediaStream(long handle);

/**
* 停止 GB28181 媒体流
*
* @return {0} if successful
*/
public native int StopGB28181MediaStream(long handle);


/*---------------GB28181相关接口---------------*/

再说RTP发送相关的接口:

    /*
* SmartPublisherJniV2.java
* SmartPublisherJniV2
*
* WebSite: https://daniusdk.com
* Github: https://github.com/daniulive/SmarterStreaming
*/

/*+++++++++++++++RTP Sender相关接口+++++++++++++++*/

/*
* 创建RTP Sender实例
*
* @param reserve:保留参数传0
*
* @return RTP Sender 句柄,0表示失败
*/
public native long CreateRTPSender(int reserve);

/**
*设置 RTP Sender传输协议
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param transport_protocol, 0:UDP, 1:TCP, 默认是UDP
*
* @return {0} if successful
*/
public native int SetRTPSenderTransportProtocol(long rtp_sender_handle, int transport_protocol);

/**
*设置 RTP Sender IP地址类型
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param ip_address_type, 0:IPV4, 1:IPV6, 默认是IPV4, 当前仅支持IPV4
*
* @return {0} if successful
*/
public native int SetRTPSenderIPAddressType(long rtp_sender_handle, int ip_address_type);

/**
*设置 RTP Sender RTP Socket本地端口
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param port, 必须是偶数,设置0的话SDK会自动分配, 默认值是0
*
* @return {0} if successful
*/
public native int SetRTPSenderLocalPort(long rtp_sender_handle, int port);

/**
*设置 RTP Sender SSRC
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param ssrc, 如果设置的话,这个字符串要能转换成uint32类型, 否则设置失败
*
* @return {0} if successful
*/
public native int SetRTPSenderSSRC(long rtp_sender_handle, String ssrc);

/**
*设置 RTP Sender RTP socket 发送Buffer大小
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param buffer_size, 必须大于0, 默认是512*1024, 当前仅对UDP socket有效, 根据视频码率考虑设置合适的值
*
* @return {0} if successful
*/
public native int SetRTPSenderSocketSendBuffer(long rtp_sender_handle, int buffer_size);

/**
*设置 RTP Sender RTP时间戳时钟频率
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param clock_rate, 必须大于0, 对于GB28181 PS规定是90kHz, 也就是90000
*
* @return {0} if successful
*/
public native int SetRTPSenderClockRate(long rtp_sender_handle, int clock_rate);

/**
*设置 RTP Sender 目的IP地址, 注意当前用在GB2818推送上,只设置一个地址,将来扩展如果用在其他地方,可能要设置多个目的地址,到时候接口可能会调整
*
* @param rtp_sender_handle, CreateRTPSender返回值
* @param address, IP地址
* @param port, 端口
*
* @return {0} if successful
*/
public native int SetRTPSenderDestination(long rtp_sender_handle, String address, int port);

/**
*初始化RTP Sender, 初始化之前先调用上面的接口配置相关参数
*
* @param rtp_sender_handle, CreateRTPSender返回值
*
* @return {0} if successful
*/
public native int InitRTPSender(long rtp_sender_handle);

/**
*获取RTP Sender RTP Socket本地端口
*
* @param rtp_sender_handle, CreateRTPSender返回值
*
* @return 失败返回0, 成功的话返回响应的端口, 请在InitRTPSender返回成功之后调用
*/
public native int GetRTPSenderLocalPort(long rtp_sender_handle);

/**
* UnInit RTP Sender
*
* @param rtp_sender_handle, CreateRTPSender返回值
*
* @return {0} if successful
*/
public native int UnInitRTPSender(long rtp_sender_handle);

/**
* 释放RTP Sender, 释放之后rtp_sender_handle就无效了,请不要再使用
*
* @param rtp_sender_handle, CreateRTPSender返回值
*
* @return {0} if successful
*/
public native int DestoryRTPSender(long rtp_sender_handle);

如何让Android平台像IPC一样实现GB28181前端设备接入

最后说,RTP接收相关的接口设计:

    /*
* SmartPlayerJniV2.java
* SmartPlayerJniV2
*
* WebSite: https://daniusdk.com
* Github: https://github.com/daniulive/SmarterStreaming
*/

/*++++++++++++++++++RTP Receiver++++++++++++++++++++++*/

/*
* 创建RTP Receiver
*
* @param reserve:保留参数传0
*
* @return RTP Receiver 句柄,0表示失败
*/
public native long CreateRTPReceiver(int reserve);


/**
*设置 RTP Receiver传输协议
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param transport_protocol, 0:UDP, 1:TCP, 默认是UDP
*
* @return {0} if successful
*/
public native int SetRTPReceiverTransportProtocol(long rtp_receiver_handle, int transport_protocol);


/**
*设置 RTP Receiver IP地址类型
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param ip_address_type, 0:IPV4, 1:IPV6, 默认是IPV4
*
* @return {0} if successful
*/
public native int SetRTPReceiverIPAddressType(long rtp_receiver_handle, int ip_address_type);


/**
*设置 RTP Receiver RTP Socket本地端口
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param port, 必须是偶数,设置0的话SDK会自动分配, 默认值是0
*
* @return {0} if successful
*/
public native int SetRTPReceiverLocalPort(long rtp_receiver_handle, int port);


/**
*设置 RTP Receiver SSRC
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param ssrc, 如果设置的话,这个字符串要能转换成uint32类型, 否则设置失败
*
* @return {0} if successful
*/
public native int SetRTPReceiverSSRC(long rtp_receiver_handle, String ssrc);


/**
*创建 RTP Receiver 会话
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param reserve, 保留值,目前传0
*
* @return {0} if successful
*/
public native int CreateRTPReceiverSession(long rtp_receiver_handle, int reserve);


/**
*获取 RTP Receiver RTP Socket本地端口
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @return 失败返回0, 成功的话返回响应的端口, 请在CreateRTPReceiverSession返回成功之后调用
*/
public native int GetRTPReceiverLocalPort(long rtp_receiver_handle);


/**
*设置 RTP Receiver Payload 相关信息
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @param payload_type, 请参考 RFC 3551
*
* @param encoding_name, 编码名, 请参考 RFC 3551, 如果payload_type不是动态的, 可能传null就好
*
* @param media_type, 媒体类型, 请参考 RFC 3551, 1 是视频, 2是音频
*
* @param clock_rate, 请参考 RFC 3551
*
* @return {0} if successful
*/
public native int SetRTPReceiverPayloadType(long rtp_receiver_handle, int payload_type, String encoding_name, int media_type, int clock_rate);


/**
*设置 RTP Receiver 音频采样率
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param sampling_rate, 音频采样率
*
* @return {0} if successful
*/
public native int SetRTPReceiverAudioSamplingRate(long rtp_receiver_handle, int sampling_rate);

/**
*设置 RTP Receiver 音频通道数
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param channels, 音频通道数
*
* @return {0} if successful
*/
public native int SetRTPReceiverAudioChannels(long rtp_receiver_handle, int channels);


/**
*设置 RTP Receiver 远端地址
*
* @param rtp_receiver_handle, CreateRTPReceiver
* @param address, IP地址
* @param port, 端口
*
* @return {0} if successful
*/
public native int SetRTPReceiverRemoteAddress(long rtp_receiver_handle, String address, int port);

/**
*初始化 RTP Receiver
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @return {0} if successful
*/
public native int InitRTPReceiver(long rtp_receiver_handle);

/**
*UnInit RTP Receiver
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @return {0} if successful
*/
public native int UnInitRTPReceiver(long rtp_receiver_handle);


/**
*Destory RTP Receiver Session
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @return {0} if successful
*/
public native int DestoryRTPReceiverSession(long rtp_receiver_handle);


/**
*Destory RTP Receiver
*
* @param rtp_receiver_handle, CreateRTPReceiver
*
* @return {0} if successful
*/
public native int DestoryRTPReceiver(long rtp_receiver_handle);


/*++++++++++++++++++RTP Receiver++++++++++++++++++++++*/

上述接口说过之后,大家可能疑惑,信令交互呢?信令交互,我们是在Android上层实现。

如基础参数配置:

/*** GB28181 相关参数,可以修改相关参数后测试 ***/
GBSIPAgent gb28181_agent_ = null;
private int gb28181_sip_local_port_base_ = 5060;

private String gb28181_sip_server_id_ = "34020000002000000001";
private String gb28181_sip_domain_ = "3402000000";
private String gb28181_sip_server_addr_ = "192.168.0.103";
private int gb28181_sip_server_port_ = 15060;

private String gb28181_sip_user_agent_filed_ = "NT GB User Agent V1.3";
private String gb28181_sip_username_ = "31011500991320000069";
private String gb28181_sip_password_ = "12345678";

private long gb28181_rtp_sender_handle_ = 0;
private int gb28181_rtp_payload_type_ = 96;

private long player_handle_ = 0;
private long rtp_receiver_handle_ = 0;
private AtomicLong last_received_audio_data_time_ = new AtomicLong(0);

/*** GB28181 相关参数,可以修改相关参数后测试 ***/

InitGB28181Agent()相关:

private boolean initGB28181Agent() {
if ( gb28181_agent_ != null )
return true;

getLocation(context_);

String local_ip_addr = IPAddrUtils.getIpAddress(context_);
Log.i(TAG, "initGB28181Agent local ip addr: " + local_ip_addr);

if ( local_ip_addr == null || local_ip_addr.isEmpty() ) {
Log.e(TAG, "initGB28181Agent local ip is empty");
return false;
}

gb28181_agent_ = GBSIPAgentFactory.getInstance().create();
if ( gb28181_agent_ == null ) {
Log.e(TAG, "initGB28181Agent create agent failed");
return false;
}

gb28181_agent_.addListener(this);

// 必填信息
gb28181_agent_.setLocalAddress(local_ip_addr);
gb28181_agent_.setServerParameter(gb28181_sip_server_addr_, gb28181_sip_server_port_, gb28181_sip_server_id_, gb28181_sip_domain_);
gb28181_agent_.setUserInfo(gb28181_sip_username_, gb28181_sip_password_);

// 可选参数
gb28181_agent_.setUserAgent(gb28181_sip_user_agent_filed_);
gb28181_agent_.setTransportProtocol(gb28181_sip_trans_protocol_==0?"UDP":"TCP");

// GB28181配置
gb28181_agent_.config(gb28181_reg_expired_, gb28181_heartbeat_interval_, gb28181_heartbeat_count_);

//com.gb.ntsignalling.Device gb_device = new com.gb.ntsignalling.Device("34020000001380000001", "安卓测试设备", Build.MANUFACTURER, Build.MODEL,
// "宇宙","火星1","火星", true);

com.gb.ntsignalling.Device gb_device = new com.gb.ntsignalling.Device("33010752991327811433", "安卓测试设备", Build.MANUFACTURER, Build.MODEL,
"宇宙","火星1","火星", true);


if (mLongitude != null && mLatitude != null) {
com.gb.ntsignalling.DevicePosition device_pos = new com.gb.ntsignalling.DevicePosition();

device_pos.setTime(mLocationTime);
device_pos.setLongitude(mLongitude);
device_pos.setLatitude(mLatitude);
gb_device.setPosition(device_pos);

gb_device.setSupportMobilePosition(true); // 设置支持移动位置上报
}

gb28181_agent_.addDevice(gb_device);

/*
com.gb28181.ntsignalling.Device gb_device1 = new com.gb28181.ntsignalling.Device("34020000001380000002", "安卓测试设备2", Build.MANUFACTURER, Build.MODEL,
"宇宙","火星1","火星", true);

if (mLongitude != null && mLatitude != null) {
com.gb28181.ntsignalling.DevicePosition device_pos = new com.gb28181.ntsignalling.DevicePosition();

device_pos.setTime(mLocationTime);
device_pos.setLongitude(mLongitude);
device_pos.setLatitude(mLatitude);
gb_device1.setPosition(device_pos);

gb_device1.setSupportMobilePosition(true);
}

gb28181_agent_.addDevice(gb_device1);


*/

if (!gb28181_agent_.createSipStack()) {
gb28181_agent_ = null;
Log.e(TAG, "initGB28181Agent gb28181_agent_.createSipStack failed.");
return false;
}

boolean is_bind_local_port_ok = false;

// 最多尝试5000个端口
int try_end_port = gb28181_sip_local_port_base_ + 5000;
try_end_port = try_end_port > 65536 ?65536: try_end_port;

for (int i = gb28181_sip_local_port_base_; i < try_end_port; ++i) {
if (gb28181_agent_.bindLocalPort(i)) {
is_bind_local_port_ok = true;
break;
}
}

if (!is_bind_local_port_ok) {
gb28181_agent_.releaseSipStack();
gb28181_agent_ = null;
Log.e(TAG, "initGB28181Agent gb28181_agent_.bindLocalPort failed.");
return false;
}

if (!gb28181_agent_.initialize()) {
gb28181_agent_.unBindLocalPort();
gb28181_agent_.releaseSipStack();
gb28181_agent_ = null;
Log.e(TAG, "initGB28181Agent gb28181_agent_.initialize failed.");
return false;
}

return true;
}

信令交互处理:

@Override
public void ntsRegisterOK(String dateString) {
Log.i(TAG, "ntsRegisterOK Date: " + (dateString!= null? dateString : ""));
}

@Override
public void ntsRegisterTimeout() {
Log.e(TAG, "ntsRegisterTimeout");
}

@Override
public void ntsRegisterTransportError(String errorInfo) {
Log.e(TAG, "ntsRegisterTransportError error:" + (errorInfo != null?errorInfo :""));
}

@Override
public void ntsOnHeartBeatException(int {
}

@Override
public void ntsOnInvitePlay(String deviceId, PlaySessionDescription session_des) {
}

@Override
public void ntsOnCancelPlay(String deviceId) {
}

@Override
public void ntsOnAckPlay(String deviceId) {
}

@Override
public void ntsOnPlayInviteResponseException(String deviceId, int {
}

@Override
public void ntsOnByePlay(String deviceId) {
}

@Override
public void ntsOnPlayDialogTerminated(String deviceId) {
}

@Override
public void ntsOnDevicePositionRequest(String deviceId, int {
}

@Override
public void ntsOnNotifyBroadcastCommand(String fromUserName, String fromUserNameAtDomain, String sn, String sourceID, String targetID) {
}

@Override
public void ntsOnAudioBroadcast(String commandFromUserName, String commandFromUserNameAtDomain, String sourceID, String targetID) {
}

@Override
public void ntsOnInviteAudioBroadcastException(String sourceID, String targetID, String errorInfo) {
}

@Override
public void ntsOnInviteAudioBroadcastTimeout(String sourceID, String targetID)

除了基础的Camera接口外,Android 5.0开始新的Camera2数据依旧可以正常对接,感兴趣的开发者可酌情参考。

发表评论

相关文章