标签:android exoplayer video scale
我正在尝试使用TextureView上的ExoPlaye播放视频.为了缩放和裁剪视频以适应视图,我使用矩阵.我的自定义视图扩展了`TextureView’这是我的代码:
@Override
public void onVideoSizeChanged(int width, int height, float pixelWidthHeightRatio) {
updateTextureViewSize(width, height);
Log.v("EXO", "onVideoSizeChanged() " + width + "x" + height);
}
private void updateTextureViewSize(float videoWidth, float videoHeight) {
float viewWidth = getWidth();
float viewHeight = getHeight();
float scaleX = 1.0f;
float scaleY = 1.0f;
float viewRatio = viewWidth / viewHeight;
float videoRatio = videoWidth / videoHeight;
if (viewRatio > videoRatio) {
// video is higher than view
scaleY = videoHeight / videoWidth;
} else {
//video is wider than view
scaleX = videoWidth / videoHeight;
}
Matrix matrix = new Matrix();
matrix.setScale(scaleX, scaleY, viewWidth / 2, viewHeight / 2);
setTransform(matrix);
}
我有一个长方形的视图,它工作得很好.但现在视图有两种状态:扩展(旧的仍然是矩形)和折叠(具有较小的高度.
所以现在视频在那些折叠的视图中被垂直拉伸.
例如,我有视图1080×480和视频360×640但它看起来像视频缩放并裁剪为1080×1080而不是拉伸到1080×480.
我在这做错了什么?
解决方法:
检查updateTextureViewSize:
/**
* Set the display options
*
* @param layout <ul>
* <li>{@link #VIDEO_LAYOUT_ORIGIN}
* <li>{@link #VIDEO_LAYOUT_SCALE}
* <li>{@link #VIDEO_LAYOUT_STRETCH}
* <li>{@link #VIDEO_LAYOUT_ZOOM}
* </ul>
*/
public void updateTextureViewSize(int layout,float videoWidth, float videoHeight) {
RelativeLayout.LayoutParams lp = (android.widget.RelativeLayout.LayoutParams) getLayoutParams();
DisplayMetrics disp = m_Context.getResources().getDisplayMetrics();
int windowWidth = disp.widthPixels, windowHeight = disp.heightPixels;
float windowRatio = windowWidth / (float) windowHeight;
float videoRatio = (float) videoWidth / (float) videoHeight;
m_iSurfaceHeight = videoHeight;
m_iSurfaceWidth = videoWidth;
if (VIDEO_LAYOUT_ORIGIN == layout && m_iSurfaceWidth < windowWidth && m_iSurfaceHeight < windowHeight) {
lp.width = (int) (m_iSurfaceHeight * videoRatio);
lp.height = m_iSurfaceHeight;
} else if (layout == VIDEO_LAYOUT_ZOOM) {
lp.width = windowRatio > videoRatio ? windowWidth : (int) (videoRatio * windowHeight);
lp.height = windowRatio < videoRatio ? windowHeight : (int) (windowWidth / videoRatio);
} else {
boolean full = layout == VIDEO_LAYOUT_STRETCH;
lp.width = (full || windowRatio < videoRatio) ? windowWidth : (int) (videoRatio * windowHeight);
lp.height = (full || windowRatio > videoRatio) ? windowHeight : (int) (windowWidth / videoRatio);
lp.leftMargin = (disp.widthPixels - lp.width) / 2;
lp.topMargin = (disp.heightPixels - lp.height) / 2;
}
lp.leftMargin = (disp.widthPixels - lp.width) / 2;
lp.topMargin = (disp.heightPixels - lp.height) / 2;
getHolder().setFixedSize(m_iSurfaceWidth, m_iSurfaceHeight);
setLayoutParams(lp);
m_iVideoLayout = layout;
}
标签:android,exoplayer,video,scale 来源: https://codeday.me/bug/20190823/1695111.html
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