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README.md

Android real-time effect filter rtmp streaming library
安卓实时滤镜RTMP推流库

This project uses Android lastest MediaCodec API for video/audio encoding and popular C ibrary librtmp (source code included) for rtmp streaming, in addionion, provides ability to implement real-time effect filters after camera capturing phase and before encoding phase. Some features are:

  • Support Android 4.3 and higher (Android 6.0/7.0-preview tested)
  • Filters support soft mode (CPU processing) and hard mode (GPU/OpenGLES rendering)
  • Soft mode filter can be implemented by processing NV21 image array captured from camera
  • Hard mode filter can be implemented by rendering image texture captured from camera
  • Support pixel rotation and flip
  • Support encoding paramaters like resolution(depend on device), bitrate, etc
  • H264 profile is auto-adjusted on different device
  • Fast front/rear camera swaping without interrupt rtmp streaming

Soft Filter Mode

  • Color format is NV21
  • Create your own filter by extending BaseSoftVideoFilter
  • Filter effect can be manipulated via java, ndk or renderscript
  • Adjust your filter properties between acquireSoftVideoFilter and releaseSoftVideoFilter, call releaseSoftVideoFilter as soon as operation finished (after acquireSoftVideoFilter), interval better be less than 3ms

Hard Filter Mode

  • Create your own filter by extending either BaseHardVideoFilter or OriginalHardVideoFilter
  • OriginalHardVideoFilter is more simple to use, just need to proivde custmom shader to get various effects
  • BaseHardVideoFilter is more powerful and flexible and need write openGLES code by yourself. You can theoretically achieve any effects you want via BaseHardVideoFilter.
  • Adjust your filter properties between acquireHardVideoFilter and releaseHardVideoFilter, call releaseHardVideoFilter as soon as operation finished (after acquireHardVideoFilter), interval better be less than 3ms

Start/stop recording and streaming:

    @Override
    public void onCreate(final Bundle savedInstanceState) {
        ... ...
        RESConfig resConfig = RESConfig.obtain();
        resConfig.setFilterMode(RESConfig.FilterMode.SOFT);
        resConfig.setTargetVideoSize(new Size(720, 480));
        resConfig.setBitRate(1000 * 1024);
        resConfig.setRenderingMode(RESConfig.RenderingMode.OpenGLES);//setrender mode in softmode
        resConfig.setDefaultCamera(Camera.CameraInfo.CAMERA_FACING_FRONT);
        if (!resClient.prepare(resConfig)) {
            Log.e("Main", "prepare,failed!!");
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        resClient.start();//start streaming & preview
    }

    @Override
    protected void onPause() {
        super.onPause();
        resClient.stop();//stop streaming & preview
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        resClient.destroy();
    }

Set recording direction:

    if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
        resConfig.setFrontCameraDirectionMode(RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_90 | RESConfig.DirectionMode.FLAG_DIRECTION_FLIP_HORIZONTAL);
        resConfig.setBackCameraDirectionMode(RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_90);
    } else {
        resConfig.setFrontCameraDirectionMode(RESConfig.DirectionMode.FLAG_DIRECTION_FLIP_HORIZONTAL);
    }

Add filter:

    BlackWhiteSoftFilter bwsFilter = new BlackWhiteSoftFilter();
    resClient.setSoftVideoFilter(bwsFilter);
    BaseSoftVideoFilter filter = resClient.acquireSoftVideoFilter();
    if (filter != null) {
        if (filter instanceof BlackWhiteFilterSoft) {
            BlackWhiteFilterSoft bwsFilter = (BlackWhiteFilterSoft) filter;
            blackWhiteFilter.setGap((byte) 128); // 0 ~ 255
        }
    ... ...
    resClient.releaseSoftVideoFilter();

For more information, please checkout sample code in me.lake.librestreaming.sample.softfilter and me.lake.librestreaming.sample.hardfilter.

简介:

  • 支持cpu滤镜和gpu滤镜。
  • 硬编码基于Mediacodec。
  • 推流基于librtmp。

特性:

  • 支持cpu滤镜,并可以通过处理图像数组来自定义滤镜。
  • 支持gpu滤镜,并可以通过opengles绘制图像纹理来自定义滤镜。
  • 前后摄像头快速切换,不会打断推流。
  • 可以选择图像大小,码流比特率,具体取决于设备支持。

关于滤镜:

支持两种滤镜模式:使用cpu的软模式和使用gpu(opengles)的硬模式,硬模式效率通常高于软模式。

软模式下:

  • 你可以通过继承BaseSoftVideoFilter创建自定义滤镜。
  • sample.softfilter中有一些使用Java,NDK和RenderScript来处理图像的滤镜示例。
  • 在acquireSoftVideoFilter和releaseSoftVideoFilter之间可以安全的修改滤镜的属性,不要持有滤镜超过3毫秒。
  • 滤镜中的颜色格式为NV21。

硬模式下:

  • 你可以通过继承BaseHardVideoFilter或者OriginalHardVideoFilter来创建自定义滤镜。
  • sample.hardfilter中有一些示例。
  • 继承OriginalHardVideoFilter只需要通过提供Shader就可以容易的实现大部分效果。
  • 继承BaseHardVideoFilter需要自己处理opengl细节,但是可以实现任何效果。
  • 在acquireHardVideoFilter和releaseHardVideoFilter之间可以安全的修改滤镜的属性。不要持有滤镜超过3毫秒。

关于硬编码(mediacodec):

  • 软模式下使用buffer to buffer。
  • 硬模式下使用surface to surface。

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安卓实时滤镜RTMP推流库 https://github.com/lakeinchina/librestreaming.git spread retract
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