librestreaming
Introduction: 安卓实时滤镜 RTMP 推流库。支持 cpu 滤镜,gpu 滤镜。音频滤镜。
Tags:
rtmp-推流-滤镜-android-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
- Compatible with GPUImage,use GPUImageFilter without change one line
- Support pixel rotation and flip
- Support encoding paramaters like resolution, bitrate,fps etc
- Fast front/rear camera swaping without interrupt rtmp streaming
- Support draw android View into video
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 preview and stream:
@Override
public void onCreate(final Bundle savedInstanceState) {
... ...
RESConfig resConfig = RESConfig.obtain();
resConfig.setRtmpAddr("rtmp://***");
resConfig.setFilterMode(RESConfig.FilterMode.HARD);
resConfig.setTargetVideoSize(new Size(720, 480));
resConfig.setBitRate(1000 * 1024);
resConfig.setVideoFPS(30);
resConfig.setVideoGOP(1);
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!!");
finish();
}
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
resClient.startPreview(surface, width, height);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
resClient.updatePreview(width, height);
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
resClient.stopPreview();
return false;
}
@Override
protected void onStart() {
super.onResume();
resClient.startStreaming();
}
@Override
protected void onStop() {
super.onPause();
resClient.stopStreaming();
}
@Override
protected void onDestroy() {
super.onDestroy();
resClient.destroy();
}
Set recording direction:
int frontDirection, backDirection;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
Camera.getCameraInfo(Camera.CameraInfo.CAMERA_FACING_FRONT, cameraInfo);
frontDirection = cameraInfo.orientation;
Camera.getCameraInfo(Camera.CameraInfo.CAMERA_FACING_BACK, cameraInfo);
backDirection = cameraInfo.orientation;
if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
resConfig.setFrontCameraDirectionMode((frontDirection == 90 ? RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_270 : RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_90) | RESConfig.DirectionMode.FLAG_DIRECTION_FLIP_HORIZONTAL);
resConfig.setBackCameraDirectionMode((backDirection == 90 ? RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_90 : RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_270));
} else {
resConfig.setBackCameraDirectionMode((backDirection == 90 ? RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_0 : RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_180));
resConfig.setFrontCameraDirectionMode((frontDirection == 90 ? RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_180 : RESConfig.DirectionMode.FLAG_DIRECTION_ROATATION_0) | 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。
- gpu 滤镜模式下兼容 GPUImage,一行代码不用修改就可以直接使用 GPUImage 的滤镜。
- 前后摄像头快速切换,不会打断推流。
- 可以自定义帧率,最大不会超过设备支持帧率
- 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。
关于磨皮算法:
- 使用优化过的带阈值的高斯模糊算法(Selective Gaussian Blur),sigma = 0.1,稀疏的取周围 24 个点,正态分布取权重计算均值。
关于兼容 GPUImageFilter:
- 使 GPUImageCompatibleFilter 来兼容 GPUImage 的滤镜,注意不能直接使用 GPUImageGroupFilter,需要把单独的滤镜用 GPUImageCompatibleFilter 包裹,再用 HardVideoGroupFilter 组合起来,具体可以参考 sample 中的 gpuimage:SketchGroup 滤镜。