本文整理汇总了Java中org.webrtc.RendererCommon.getLayoutMatrix方法的典型用法代码示例。如果您正苦于以下问题：Java RendererCommon.getLayoutMatrix方法的具体用法？Java RendererCommon.getLayoutMatrix怎么用？Java RendererCommon.getLayoutMatrix使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.webrtc.RendererCommon的用法示例。
在下文中一共展示了RendererCommon.getLayoutMatrix方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: captureBitmapFromTexture
import org.webrtc.RendererCommon; //导入方法依赖的package包/类
private Bitmap captureBitmapFromTexture(I420Frame i420Frame) {
int width = i420Frame.rotatedWidth();
int height = i420Frame.rotatedHeight();
int outputFrameSize = width * height * 3 / 2;
ByteBuffer outputFrameBuffer = ByteBuffer.allocateDirect(outputFrameSize);
final float frameAspectRatio = (float) i420Frame.rotatedWidth() /
(float) i420Frame.rotatedHeight();
final float[] rotatedSamplingMatrix =
RendererCommon.rotateTextureMatrix(i420Frame.samplingMatrix,
i420Frame.rotationDegree);
final float[] layoutMatrix = RendererCommon.getLayoutMatrix(false,
frameAspectRatio,
(float) width / height);
final float[] texMatrix = RendererCommon.multiplyMatrices(rotatedSamplingMatrix,
layoutMatrix);
/*
* YuvConverter must be instantiated on a thread that has an active EGL context. We know
* that renderFrame is called from the correct render thread therefore
* we defer instantiation of the converter until frame arrives.
*/
YuvConverter yuvConverter = new YuvConverter();
yuvConverter.convert(outputFrameBuffer,
width,
height,
width,
i420Frame.textureId,
texMatrix);
// Now we need to unpack the YUV data into planes
byte[] data = outputFrameBuffer.array();
int offset = outputFrameBuffer.arrayOffset();
int stride = width;
ByteBuffer[] yuvPlanes = new ByteBuffer[] {
ByteBuffer.allocateDirect(width * height),
ByteBuffer.allocateDirect(width * height / 4),
ByteBuffer.allocateDirect(width * height / 4)
};
int[] yuvStrides = new int[] {
width,
(width + 1) / 2,
(width + 1) / 2
};
// Write Y
yuvPlanes[0].put(data, offset, width * height);
// Write U
for (int r = height ; r < height * 3 / 2; ++r) {
yuvPlanes[1].put(data, offset + r * stride, stride / 2);
}
// Write V
for (int r = height ; r < height * 3 / 2 ; ++r) {
yuvPlanes[2].put(data, offset + r * stride + stride / 2, stride / 2);
}
// Convert the YuvImage
YuvImage yuvImage = i420ToYuvImage(yuvPlanes, yuvStrides, width, height);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Rect rect = new Rect(0, 0, yuvImage.getWidth(), yuvImage.getHeight());
// Compress YuvImage to jpeg
yuvImage.compressToJpeg(rect, 100, stream);
// Convert jpeg to Bitmap
byte[] imageBytes = stream.toByteArray();
// Release YUV Converter
yuvConverter.release();
return BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
}