Android平台RTMP直播推送模块技术接入说明

技术背景

大牛直播SDK跨平台RTMP直播推送模块,始于2015年,支持Windows、Linux(x64_64架构|aarch64)、Android、iOS平台,支持采集推送摄像头、屏幕、麦克风、扬声器、编码前、编码后数据对接,功能强大,性能优异,配合大牛直播SDK的SmartPlayer播放器,轻松实现毫秒级的延迟体验,满足大多数行业的使用场景。

RTMP直播推送模块数据源,支持编码前、编码后数据对接:

  • 编码前数据(目前支持的有YV12/NV21/NV12/I420/RGB24/RGBA32/RGB565等数据类型);
  • 编码后数据(如无人机等264/HEVC数据,或者本地解析的MP4音视频数据)。

技术对接

 系统要求

  • SDK支持Android5.1及以上版本;
  • 支持的CPU架构:armv7, arm64, x86, x86_64。

准备工作

  • 确保SmartPublisherJniV2.java放到com.daniulive.smartpublisher包名下(可在其他包名下调用);
  • smartavengine.jar加入到工程;
  • 拷贝libSmartPublisher.so到工程;
  • AndroidManifast.xml添加相关权限:
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
<uses-permission android:name="android.permission.VIBRATE" />

  • Load相关so:
static {  
    System.loadLibrary("SmartPublisher");
}

  • build.gradle配置32/64位库:
splits {
    abi {
        enable true
        reset()
        // Specifies a list of ABIs that Gradle should create APKs for
        include 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64' //select ABIs to build APKs for
        // Specify that we do not want to also generate a universal APK that includes all ABIs
        universalApk true
    }
}

  • 如需集成到自己系统测试,请用大牛直播SDK的app name,授权版按照授权app name正常使用即可;
  • 如何改app-name,strings.xml做以下修改:
<string name="app_name">SmartPublisherSDKDemo</string>

接口设计

Android 推送端SDK接口详解
调用描述 接口 接口描述
最先调用,如成功返回推送实例 SmartPublisherOpen ctx:上下文信息;

Audio_opt:

0:不推送音频;

1:推送编码前音频(PCM);

2:对接外部编码后的audio数据(AAC/PCMA/PCMU/SPEEX)

video_opt:

0:不推送视频;

1:推送编码前视频(YUV420SP/YUV420P/RGBA/ARGB);

2:推送编码后视频(H.264)

3:层叠加模式

width|height:宽高信息。

Event回调 SetSmartPublisherEventCallbackV2 设置event callback
硬编码设置 SetSmartPublisherVideoHWEncoder 检测是否支持H.264硬编码,如果返回0,则支持,否则自动采用软编码
SetSmartPublisherVideoHevcHWEncoder 检测是否支持H.265(HEVC)硬编码,如果返回0,则支持,否则自动采用软编码
SetNativeMediaNDK 设置视频硬编码是否使用 Native Media NDK, 默认是不使用, 安卓5.0以下设备不支持
SetVideoHWEncoderBitrateMode 设置视频硬编码码率控制模式

hw_bitrate_mode: -1表示使用默认值, 不设置也会使用默认值, 0:CQ, 1:VBR, 2:CBR, 3:CBR_FD

SetVideoHWEncoderComplexity 设置视频硬编码复杂度, 安卓5.0及以上支持
SetVideoHWEncoderQuality 设置视频硬编码质量, 安卓9及以上支持, 仅当硬编码器码率控制模式(BitrateMode)是CQ(constant-quality mode)时才有效
SetAVCHWEncoderProfile 设置H.264硬编码Profile, 安卓7及以上支持
SetAVCHWEncoderLevel 设置H.264硬编码Level, 这个只有在设置了Profile的情况下才有效, 安卓7及以上支持
SetVideoHWEncoderMaxBitrate 设置视频硬编码最大码率, 安卓没有相关文档说明, 所以不建议设置
水印 文字、png水印 PostLayerBitmap 通过层模式设置水印,投递层

Bitmap.Config.ARGB_888图像

视频参数配置 软编码可变码率 SmartPublisherSetSwVBRMode 设置软编码可变码率,可变码率下,相邻帧之间变化不大时码率更低
GOP间隔(关键帧) SmartPublisherSetGopInterval 设置推送端GOP间隔,一般建议在帧率的1~3倍,如不设置,用底层默认值
软编码码率设置 SmartPublisherSetSWVideoBitRate 设置软编码视频 bit-rate,最大码流一般是平均码流的2倍,如不设置,用底层计算的默认值
帧率 SmartPublisherSetFPS 设置fps,如不设置,用底层默认值
软编码视频Profile SmartPublisherSetSWVideoEncoderProfile 设置软编码模式下的video encoder profile,默认baseline profile
软编码编码速度 SmartPublisherSetSWVideoEncoderSpeed 设置软编码编码速度,设置范围(1,6),1最快,6最慢,默认是6
频设置 视频镜像 SmartPublisherSetMirror 镜像模式: 播放端和推送端本地回显方向显示一致(前置摄像头)
视频截图 实时快照 CaptureImage 截图接口, 支持JPEG和PNG两种格式
音频配置 音频编码

类型

SmartPublisherSetAudioCodecType 设置编码类型,默认AAC编码,type设置为2时,启用speex编码(码率更低)
AAC编码码率 SmartPublisherSetAudioBitRate 设置音频编码码率, 当前只对AAC编码有效
SPEEX编码质量 SmartPublisherSetSpeexEncoderQuality 设置speex编码质量,数值越大,质量越高,范围(0,10),默认8
音频处理 噪音抑制 SmartPublisherSetNoiseSuppression 噪音抑制开启后,可去除采集端背景杂音
增益控制 SmartPublisherSetAGC 设置自动增益控制,保持声音稳定
回声消除 SmartPublisherSetEchoCancellation 设置音频回音消除
实时静音 SmartPublisherSetMute 设置实时静音、取消静音
设置输入

音量

SmartPublisherSetInputAudioVolume 设置输入音量,默认是1.0,范围是[0.0, 5.0], 设置成0静音, 1音量不变
RTMP推送模式 SetRtmpPublishingType 设置rtmp publisher类型,0:live,1:record,需服务器支持
Enhanced RTMP设置 DisableEnhancedRTMP disable enhanced RTMP, SDK默认是开启enhanced RTMP的
RTMP推送URL设置 SmartPublisherSetURL 设置RTMP推送url
编码前实时视频数据 camera数据 SmartPublisherOnCaptureVideoData 对接camera回调的数据
YV12数据 SmartPublisherOnYV12Data YV12数据接口
NV21数据 SmartPublisherOnNV21Data NV21数据接口
转换接口 SmartPublisherNV21ToI420Rotate NV21转换到I420并旋转
YUV(I420) SmartPublisherOnCaptureVideoI420Data 第三方YUV(I420)接口
RGB24数据 SmartPublisherOnCaptureVideoRGB24Data RGB24接口
RGBA32数据 SmartPublisherOnCaptureVideoRGBA32Data RGBA32接口
YUV420888数据 SmartPublisherOnImageYUV420888 YUV420888接口
RGBA数据 SmartPublisherOnCaptureVideoRGBAData 第三方RGBA数据
ABGR垂直翻转数据 SmartPublisherOnCaptureVideoABGRFlip

VerticalData

ABGR flip vertical(垂直翻转) 数据(Demo中用于传递屏幕数据)
RGBA8888图像 PostLayerImageRGBA8888ByteBuffer 投递层RGBA8888图像,如果不需要Aplpha通道的话, 请使用RGBX8888接口
RGBX8888图像 PostLayerImageRGBX8888ByteBuffer 投递层RGBX8888图像
I420图像 PostLayerImageI420ByteBuffer 投递层I420图像
RGB565数据 SmartPublisherOnCaptureVideoRGB565Data RGB565 data
裁剪过的RGBA

数据

SmartPublisherOnCaptureVideoClipedRGBAData 投递裁剪过的RGBA数据
PCM数据 SmartPublisherOnPCMData 实时PCM数据
远端PCM数据

(用于回音消除)

SmartPublisherOnFarEndPCMData 实时传递远端PCM数据(可用于互动级的回音消除处理)
音频 混音 混音数据 SmartPublisherOnMixPCMData 传递PCM混音音频数据给SDK, 每10ms音频数据传入一次
编码后数据对接 编码后视频数据 SmartPublisherPostVideoEncodedData 设置编码后视频数据
编码后音频数据 SmartPublisherPostAudioEncodedData 编码后音频数据
编码后音视频数据回调 编码后音频数据回调 SmartPublisherSetAudioEncodedDataCallback 设置编码后音频数据回调
编码后视频数据回调 SmartPublisherSetVideoEncodedDataCallback 设置编码后视频数据回调
层结构设置 启用|停用视频层 EnableLayer video_opt为3时,启用或者停用视频层, 这个接口必须在StartXXX之后调用.
移除视频层 RemoveLayer 移除视频层, 这个接口必须在StartXXX之后调用.
RTMP推送 开始推送

RTMP

SmartPublisherStartPublisher 启动RTMP推送
停止推送

RTMP

SmartPublisherStopPublisher 停止RTMP推送
关闭推送实例 关闭实例 SmartPublisherClose 关闭推送实例,结束时必须调用close接口释放资源
设置授权 授权license设置 SmartPublisherSetSDKClientKey 设置授权Key,如需设置授权Key, 请确保在SmartPublisherOpen之前调用!

功能支持

  • 音频编码:AAC/SPEEX;
  • 视频编码:H.264、H.265;
  • 推流协议:RTMP;
  • [音视频]支持纯音频/纯视频/音视频推送;
  • [摄像头]支持采集过程中,前后摄像头实时切换;
  • 支持帧率、关键帧间隔(GOP)、码率(bit-rate)设置;
  • 支持RTMP推送 live|record模式设置;
  • 支持前置摄像头镜像设置;
  • 支持软编码、特定机型硬编码;
  • 支持横屏、竖屏推送;
  • 支持Android屏幕采集推送;
  • 支持自建标准RTMP服务器或CDN;
  • 支持断网自动重连、网络状态回调;
  • 支持实时动态水印;
  • 支持实时快照;
  • 支持降噪处理、自动增益控制;
  • 支持外部编码前音视频数据对接;
  • 支持外部编码后音视频数据对接;
  • 支持RTMP扩展H.265(需设备支持H.265特定机型硬编码)和Enhanced RTMP;
  • 支持实时音量调节;
  • 支持扩展录像模块;
  • 支持Unity接口;
  • 支持H.264扩展SEI发送模块;
  • 支持Android 5.1及以上版本。

接口调用详解

本文以大牛直播SDK Android平台Camera2Demo为例,推送RTMP之前,可以先选择视频分辨率、软编还是硬编码,音频是AAC、SPEEX还是PCMA编码等基础设置,其他参数的设置,可以参考下面InitAndSetConfig()。

以Android平台Camera2对接为例,onCreate()时,想new SmartPublisherJniV2():

/*
 * MainActivity.java
 * Author: daniusdk.com
 */
@Override
protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	
	...

	context_ = this.getApplicationContext();
	
	libPublisher = new SmartPublisherJniV2();
}

推送RTMP:

class ButtonStartPushListener implements View.OnClickListener {
	public void onClick(View v) {
		if (stream_publisher_.is_rtmp_publishing()) {
			stopPush();

			btnRTMPPusher.setText("推送RTMP");
			return;
		}

		Log.i(TAG, "onClick start push rtmp..");
		
        InitAndSetConfig();

		String rtmp_pusher_url ="rtmp://192.168.0.101:1935/hls/stream123";;


		if (!stream_publisher_.SetURL(rtmp_pusher_url))
			Log.e(TAG, "Failed to set publish stream URL..");

		boolean start_ret = stream_publisher_.StartPublisher();
		if (!start_ret) {
			stream_publisher_.try_release();
			Log.e(TAG, "Failed to start push stream..");
			return;
		}

		startAudioRecorder();
		startLayerPostThread();

		btnRTMPPusher.setText("停止推送 ");

	}
}

stopPush()实现如下:

//停止rtmp推送
private void stopPush() {
	stream_publisher_.StopPublisher();
	stream_publisher_.try_release();

	if (!stream_publisher_.is_publishing())
		stopAudioRecorder();
}

其中,InitAndSetConfig()实现如下,通过调SmartPublisherOpen()接口,生成推送实例句柄。

/*
 * MainActivity.java
 * Author: daniusdk.com
 */
private void InitAndSetConfig() {
	if (null == libPublisher)
		return;

	if (!stream_publisher_.empty())
		return;

	Log.i(TAG, "InitAndSetConfig video width: " + video_width_ + ", height" + video_height_ + " imageRotationDegree:" + cameraImageRotationDegree_);

	int audio_opt = 1;
	long handle = libPublisher.SmartPublisherOpen(context_, audio_opt, 3,  video_width_, video_height_);
	if (0==handle) {
		Log.e(TAG, "sdk open failed!");
		return;
	}

	Log.i(TAG, "publisherHandle=" + handle);

	int fps = 25;
	int gop = fps * 3;

	initialize_publisher(libPublisher, handle, video_width_, video_height_, fps, gop);

	stream_publisher_.set(libPublisher, handle);
}

对应的initialize_publisher()实现如下,设置软硬编码、帧率、关键帧间隔等。

private boolean initialize_publisher(SmartPublisherJniV2 lib_publisher, long handle, int width, int height, int fps, int gop) {
	if (null == lib_publisher) {
		Log.e(TAG, "initialize_publisher lib_publisher is null");
		return false;
	}

	if (0 == handle) {
		Log.e(TAG, "initialize_publisher handle is 0");
		return false;
	}

	if (videoEncodeType == 1) {
		int kbps = LibPublisherWrapper.estimate_video_hardware_kbps(width, height, fps, true);
		Log.i(TAG, "h264HWKbps: " + kbps);
		int isSupportH264HWEncoder = lib_publisher.SetSmartPublisherVideoHWEncoder(handle, kbps);
		if (isSupportH264HWEncoder == 0) {
			lib_publisher.SetNativeMediaNDK(handle, 0);
			lib_publisher.SetVideoHWEncoderBitrateMode(handle, 1); // 0:CQ, 1:VBR, 2:CBR
			lib_publisher.SetVideoHWEncoderQuality(handle, 39);
			lib_publisher.SetAVCHWEncoderProfile(handle, 0x08); // 0x01: Baseline, 0x02: Main, 0x08: High

			// lib_publisher.SetAVCHWEncoderLevel(handle, 0x200); // Level 3.1
			// lib_publisher.SetAVCHWEncoderLevel(handle, 0x400); // Level 3.2
			// lib_publisher.SetAVCHWEncoderLevel(handle, 0x800); // Level 4
			lib_publisher.SetAVCHWEncoderLevel(handle, 0x1000); // Level 4.1 多数情况下,这个够用了
			//lib_publisher.SetAVCHWEncoderLevel(handle, 0x2000); // Level 4.2

			// lib_publisher.SetVideoHWEncoderMaxBitrate(handle, ((long)h264HWKbps)*1300);

			Log.i(TAG, "Great, it supports h.264 hardware encoder!");
		}
	} else if (videoEncodeType == 2) {
		int kbps = LibPublisherWrapper.estimate_video_hardware_kbps(width, height, fps, false);
		Log.i(TAG, "hevcHWKbps: " + kbps);
		int isSupportHevcHWEncoder = lib_publisher.SetSmartPublisherVideoHevcHWEncoder(handle, kbps);
		if (isSupportHevcHWEncoder == 0) {
			lib_publisher.SetNativeMediaNDK(handle, 0);
			lib_publisher.SetVideoHWEncoderBitrateMode(handle, 1); // 0:CQ, 1:VBR, 2:CBR
			lib_publisher.SetVideoHWEncoderQuality(handle, 39);

			// libPublisher.SetVideoHWEncoderMaxBitrate(handle, ((long)hevcHWKbps)*1200);

			Log.i(TAG, "Great, it supports hevc hardware encoder!");
		}
	}

	boolean is_sw_vbr_mode = true;
	//H.264 software encoder
	if (is_sw_vbr_mode) {
		int is_enable_vbr = 1;
		int video_quality = LibPublisherWrapper.estimate_video_software_quality(width, height, true);
		int vbr_max_kbps = LibPublisherWrapper.estimate_video_vbr_max_kbps(width, height, fps);
		lib_publisher.SmartPublisherSetSwVBRMode(handle, is_enable_vbr, video_quality, vbr_max_kbps);
	}

	if (is_pcma_) {
		lib_publisher.SmartPublisherSetAudioCodecType(handle, 3);
	} else {
		lib_publisher.SmartPublisherSetAudioCodecType(handle, 1);
	}

	lib_publisher.SetSmartPublisherEventCallbackV2(handle, new EventHandlerPublisherV2().set(handler_, record_executor_));

	lib_publisher.SmartPublisherSetSWVideoEncoderProfile(handle, 3);

	lib_publisher.SmartPublisherSetSWVideoEncoderSpeed(handle, 2);

	lib_publisher.SmartPublisherSetGopInterval(handle, gop);

	lib_publisher.SmartPublisherSetFPS(handle, fps);

	// lib_publisher.SmartPublisherSetSWVideoBitRate(handle, 600, 1200);

	boolean is_noise_suppression = true;
	lib_publisher.SmartPublisherSetNoiseSuppression(handle, is_noise_suppression ? 1 : 0);

	boolean is_agc = false;
	lib_publisher.SmartPublisherSetAGC(handle, is_agc ? 1 : 0);

	int echo_cancel_delay = 0;
	lib_publisher.SmartPublisherSetEchoCancellation(handle, 1, echo_cancel_delay);

	return true;
}

数据投递如下(以Camera2采集为例,如果是其他视频格式,也可以正常对接):

@Override
public void onCameraImageData(Image image) {
	....
	for (LibPublisherWrapper i : publisher_array_)
		i.PostLayerImageYUV420888ByteBuffer(0, 0, 0,
			planes[0].getBuffer(), y_offset, planes[0].getRowStride(),
			planes[1].getBuffer(), u_offset, planes[1].getRowStride(),
			planes[2].getBuffer(), v_offset, planes[2].getRowStride(), planes[1].getPixelStride(),
			w, h, 0, 0,
			scale_w, scale_h, scale_filter_mode, rotation_degree);

}

音频采集投递设计如下:

void startAudioRecorder() {
	if (audio_recorder_ != null)
		return;

	audio_recorder_ = new NTAudioRecordV2(this);

	Log.i(TAG, "startAudioRecorder call audio_recorder_.start()+++...");

	audio_recorder_callback_ = new NTAudioRecordV2CallbackImpl(stream_publisher_, null);

	audio_recorder_.AddCallback(audio_recorder_callback_);

	if (!audio_recorder_.Start(is_pcma_ ? 8000 : 44100, 1) ) {
		audio_recorder_.RemoveCallback(audio_recorder_callback_);
		audio_recorder_callback_ = null;

		audio_recorder_ = null;

		Log.e(TAG, "startAudioRecorder start failed.");
	}
	else {
		Log.i(TAG, "startAudioRecorder call audio_recorder_.start() OK---...");
	}
}

void stopAudioRecorder() {
	if (null == audio_recorder_)
		return;

	Log.i(TAG, "stopAudioRecorder+++");

	audio_recorder_.Stop();

	if (audio_recorder_callback_ != null) {
		audio_recorder_.RemoveCallback(audio_recorder_callback_);
		audio_recorder_callback_ = null;
	}

	audio_recorder_ = null;

	Log.i(TAG, "stopAudioRecorder---");
}

回调Audio数据的地方,直接投递出去:

private static class NTAudioRecordV2CallbackImpl implements NTAudioRecordV2Callback {
	private WeakReference<LibPublisherWrapper> publisher_0_;

	public NTAudioRecordV2CallbackImpl(LibPublisherWrapper publisher_0) {
		if (publisher_0 != null)
			publisher_0_ = new WeakReference<>(publisher_0);
	}

	private final LibPublisherWrapper get_publisher_0() {
		if (publisher_0_ !=null)
			return publisher_0_.get();

		return null;
	}

	@Override
	public void onNTAudioRecordV2Frame(ByteBuffer data, int size, int sampleRate, int channel, int per_channel_sample_number) {

		LibPublisherWrapper publisher_0 = get_publisher_0();
		if (publisher_0 != null)
			publisher_0.OnPCMData(data, size, sampleRate, channel, per_channel_sample_number);
	}
}

图层投递设计如下,图层投递的时候,可设置是否添加文字、图片动态水印:

private void startLayerPostThread() {
	if (layer_post_thread_ != null)
		return;

	layer_post_thread_ = new LayerPostThread(this.context_, publisher_array_);
	layer_post_thread_.start_post();
	update_layer_post_video_size();
	layer_post_thread_.enableText(isHasTextWatermark());
	layer_post_thread_.enablePicture(isHasPictureWatermark());
}

private void update_layer_post_video_size() {
	if (null == layer_post_thread_)
		return;

	int w, h;
	int degree = cameraImageRotationDegree_;
	if (degree < 0 ) {
		w = 0;
		h = 0;
	} else if (90 == degree || 270 == degree) {
		w = video_height_;
		h = video_width_;
	}else {
		w = video_width_;
		h = video_height_;
	}

	layer_post_thread_.update_video_size(w, h);
}

private void stopLayerPostThread() {
	if (layer_post_thread_ != null) {
		layer_post_thread_.stop_post();
		layer_post_thread_ = null;
	}
}

如需摄像头快照,调用以下逻辑实现即可:

class ButtonCaptureImageListener implements View.OnClickListener {
	public void onClick(View v) {
		if (null == snap_shot_impl_) {
			snap_shot_impl_ = new SnapShotImpl(image_path_, context_, handler_, libPublisher, snap_shot_publisher_);
			snap_shot_impl_.start();
		}

		startLayerPostThread();
		snap_shot_impl_.set_layer_post_thread(layer_post_thread_);

		snap_shot_impl_.capture();
	}
}

如需集成录像模块,开始录像、停止录像设计如下:

class ButtonStartRecorderListener implements View.OnClickListener {
	public void onClick(View v) {
		if (layer_post_thread_ != null)
			layer_post_thread_.update_layers();

		if (stream_publisher_.is_recording()) {
			stopRecorder();

			if (stream_publisher_.empty())
				ConfigControlEnable(true);

			btnStartRecorder.setText("实时录像");
			btnPauseRecorder.setText("暂停录像");
			btnPauseRecorder.setEnabled(false);
			isPauseRecording = true;
			return;
		}

		Log.i(TAG, "onClick start recorder..");

		InitAndSetConfig();

		ConfigRecorderParam();

		boolean start_ret = stream_publisher_.StartRecorder();
		if (!start_ret) {
			stream_publisher_.try_release();
			Log.e(TAG, "Failed to start recorder.");
			return;
		}

		startAudioRecorder();
		ConfigControlEnable(false);

		startLayerPostThread();

		btnStartRecorder.setText("停止录像");
		btnPauseRecorder.setEnabled(true);
		isPauseRecording = true;
	}
}

录像参数配置实现如下:

void ConfigRecorderParam() {
	if (null == libPublisher)
		return;

	if (null == recDir || recDir.isEmpty())
		return;

	int ret = libPublisher.SmartPublisherCreateFileDirectory(recDir);
	if (ret != 0) {
		Log.e(TAG, "Create record dir failed, path:" + recDir);
		return;
	}

	if (!stream_publisher_.SetRecorderDirectory(recDir)) {
		Log.e(TAG, "Set record dir failed , path:" + recDir);
		return;
	}

	// 更细粒度控制录像的, 一般情况无需调用
	//libPublisher.SmartPublisherSetRecorderAudio(publisherHandle, 0);
	//libPublisher.SmartPublisherSetRecorderVideo(publisherHandle, 0);

	if (!stream_publisher_.SetRecorderFileMaxSize(200)) {
		Log.e(TAG, "SmartPublisherSetRecorderFileMaxSize failed.");
		return;
	}
}

暂停录像、恢复录像设计如下:

class ButtonPauseRecorderListener implements View.OnClickListener {
	public void onClick(View v) {
		if (stream_publisher_.is_recording()) {
			if (isPauseRecording) {
				boolean ret = stream_publisher_.PauseRecorder(true);
				if (ret) {
					isPauseRecording = false;
					btnPauseRecorder.setText("恢复录像");
				} else {
					Log.e(TAG, "Pause recorder failed..");
				}
			} else {
				boolean ret = stream_publisher_.PauseRecorder(false);
				if (ret) {
					isPauseRecording = true;
					btnPauseRecorder.setText("暂停录像");
				} else {
					Log.e(TAG, "Resume recorder failed..");
				}
			}
		}
	}
}

Event回调实现如下:

private static class EventHandlerPublisherV2 implements NTSmartEventCallbackV2 {
	@Override
	public void onNTSmartEventCallbackV2(long handle, int id, long param1, long param2, String param3, String param4, Object param5) {

		Log.i(TAG, "EventHandeV2: handle=" + handle + " id:" + id);

		String publisher_event = "";

		switch (id) {
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_STARTED:
				publisher_event = "开始..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_CONNECTING:
				publisher_event = "连接中..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_CONNECTION_FAILED:
				publisher_event = "连接失败..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_CONNECTED:
				publisher_event = "连接成功..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_DISCONNECTED:
				publisher_event = "连接断开..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_STOP:
				publisher_event = "关闭..";
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_RECORDER_START_NEW_FILE:
				publisher_event = "开始一个新的录像文件 : " + param3;
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_ONE_RECORDER_FILE_FINISHED:
				if (record_executor_ != null) {
					RecordExecutorService executor = record_executor_.get();
					if (executor != null) {
						RecordFileFinishedHandler file_finished_handler = new RecordFileFinishedHandler().set(handle, param3, param1);
						if (param2 > 0)
							file_finished_handler.set_begin_time(param2);

						executor.execute(file_finished_handler);
					}
				}
				publisher_event = "已生成一个录像文件 : " + param3;
				break;

			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_SEND_DELAY:
				publisher_event = "发送时延: " + param1 + " 帧数:" + param2;
				break;

			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_CAPTURE_IMAGE:
				publisher_event = "快照: " + param1 + " 路径:" + param3;
				if (0 == param1)
					publisher_event = publisher_event + "截取快照成功.." + ", 用户数据:" + param4;
				 else
					publisher_event = publisher_event + "截取快照失败..";

				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUBLISHER_RTSP_URL:
				publisher_event = "RTSP服务URL: " + param3;
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUSH_RTSP_SERVER_RESPONSE_STATUS_CODE:
				publisher_event ="RTSP status code received, codeID: " + param1 + ", RTSP URL: " + param3;
				break;
			case NTSmartEventID.EVENT_DANIULIVE_ERC_PUSH_RTSP_SERVER_NOT_SUPPORT:
				publisher_event ="服务器不支持RTSP推送, 推送的RTSP URL: " + param3;
				break;
		}

		String str = "当前回调状态:" + publisher_event;

		Log.i(TAG, str);

		if (handler_ != null) {
			android.os.Handler handler = handler_.get();
			if (handler != null) {
				Message message = new Message();
				message.what = PUBLISHER_EVENT_MSG;
				message.obj = publisher_event;
				handler.sendMessage(message);
			}
		}
	}

	public NTSmartEventCallbackV2 set(android.os.Handler handler, RecordExecutorService record_executor) {
		this.handler_ = new WeakReference<>(handler);
		this.record_executor_ = new WeakReference<>(record_executor);
		return this;
	}

	private WeakReference<android.os.Handler> handler_;
	private WeakReference<RecordExecutorService> record_executor_;
}

onDestroy() 的时候,调用stopPush()即可,如果有录像和快照,都停掉,此外,停掉图层投递线程,并关闭camera:

@Override
protected void onDestroy() {
	Log.i(TAG, "activity destory!");

	record_executor_.cancel_tasks();

	stopAudioRecorder();

	if (snap_shot_impl_ != null) {
		snap_shot_impl_.stop();
		snap_shot_impl_ = null;
	}

	snap_shot_publisher_.release();

	stopPush();
	stopRecorder();

	stream_publisher_.release();

	stopLayerPostThread();

	if (camera2Helper != null) {
		camera2Helper.release();
	}

	if (!record_executor_.shutdown(60, TimeUnit.SECONDS))
		Log.w(TAG, "call record_executor_.shutdown failed");

	super.onDestroy();
}

总结

以上是大牛直播SDK的Android平台RTMP直播推送模块详细的对接说明,除了可以对接编码前各种类型的音视频数据外,模块还支持对接编码后音视频数据,并实现本地录像、快照等功能,除支持H.264外,RTMP推送模块还支持扩展H.265和Enhanced RTMP。感兴趣的开发者,可以单独跟我们探讨。