Package tvi.webrtc

Class TextureBufferImpl

All Implemented Interfaces:
RefCounted, VideoFrame.Buffer, VideoFrame.TextureBuffer

public class TextureBufferImpl extends Object implements VideoFrame.TextureBuffer
Android texture buffer that glues together the necessary information together with a generic release callback. ToI420() is implemented by providing a Handler and a YuvConverter.
  • Constructor Details

    • TextureBufferImpl

      public TextureBufferImpl(int width, int height, VideoFrame.TextureBuffer.Type type, int id, transformMatrix, android.os.Handler toI420Handler, YuvConverter yuvConverter, @Nullable Runnable releaseCallback)
  • Method Details

    • getType

      Specified by:
      getType in interface VideoFrame.TextureBuffer
    • getTextureId

      public int getTextureId()
      Specified by:
      getTextureId in interface VideoFrame.TextureBuffer
    • getTransformMatrix

      public getTransformMatrix()
      Description copied from interface: VideoFrame.TextureBuffer
      Retrieve the transform matrix associated with the frame. This transform matrix maps 2D homogeneous coordinates of the form (s, t, 1) with s and t in the inclusive range [0, 1] to the coordinate that should be used to sample that location from the buffer.
      Specified by:
      getTransformMatrix in interface VideoFrame.TextureBuffer
    • getWidth

      public int getWidth()
      Description copied from interface: VideoFrame.Buffer
      Resolution of the buffer in pixels.
      Specified by:
      getWidth in interface VideoFrame.Buffer
    • getHeight

      public int getHeight()
      Specified by:
      getHeight in interface VideoFrame.Buffer
    • toI420

      public VideoFrame.I420Buffer toI420()
      Description copied from interface: VideoFrame.Buffer
      Returns a memory-backed frame in I420 format. If the pixel data is in another format, a conversion will take place. All implementations must provide a fallback to I420 for compatibility with e.g. the internal WebRTC software encoders.

      Conversion may fail, for example if reading the pixel data from a texture fails. If the conversion fails, null is returned.

      Specified by:
      toI420 in interface VideoFrame.Buffer
    • retain

      public void retain()
      Description copied from interface: RefCounted
      Increases ref count by one.
      Specified by:
      retain in interface RefCounted
      Specified by:
      retain in interface VideoFrame.Buffer
    • release

      public void release()
      Description copied from interface: RefCounted
      Decreases ref count by one. When the ref count reaches zero, resources related to the object will be freed.
      Specified by:
      release in interface RefCounted
      Specified by:
      release in interface VideoFrame.Buffer
    • cropAndScale

      public VideoFrame.Buffer cropAndScale(int cropX, int cropY, int cropWidth, int cropHeight, int scaleWidth, int scaleHeight)
      Description copied from interface: VideoFrame.Buffer
      Crops a region defined by `cropx`, `cropY`, `cropWidth` and `cropHeight`. Scales it to size `scaleWidth` x `scaleHeight`.
      Specified by:
      cropAndScale in interface VideoFrame.Buffer
    • getUnscaledWidth

      public int getUnscaledWidth()
      Returns the width of the texture in memory. This should only be used for downscaling, and you should still respect the width from getWidth().
    • getUnscaledHeight

      public int getUnscaledHeight()
      Returns the height of the texture in memory. This should only be used for downscaling, and you should still respect the height from getHeight().
    • getToI420Handler

      public android.os.Handler getToI420Handler()
    • getYuvConverter

      public YuvConverter getYuvConverter()
    • applyTransformMatrix

      public TextureBufferImpl applyTransformMatrix( transformMatrix, int newWidth, int newHeight)
      Create a new TextureBufferImpl with an applied transform matrix and a new size. The existing buffer is unchanged. The given transform matrix is applied first when texture coordinates are still in the unmodified [0, 1] range.
      Specified by:
      applyTransformMatrix in interface VideoFrame.TextureBuffer