Video_Crop
SDK提供以下接口来完成视频裁剪的相关功能：
- KSYEditKit#setScalingMode(int):裁剪模式选择（KSYEditKit#SCALING_MODE_BEST_FIT、KSYEditKit#SCALING_MODE_CROP、KSYEditKit#SCALING_MODE_FULL_FILL(默认)）
SCALING_MODE_FULL_FILL 为默认模式，默认会按照原始视频比例来计算分辨率
- KSYEditKit#setScaleType(int type):画布比例选择(KSYEditKit#SCALE_TYPE_9_16（默认）、KSYEditKit#SCALE_TYPE_3_4、 KSYEditKit#SCALE_TYPE_1_1)
- KSYEditKit#setPreviewCrop(float left, float top, float w, float h)：SCALING_MODE_CROP模式时设置画布裁剪范围
- KSYEditKit#getPreviewCropRect()：SCALING_MODE_CROP模式时获取画布裁剪信息
- KSYEditKit#setScale(float):任��画布比例
- KSYEditKit#getCropScale():SCALING_MODE_CROP模式时获取可裁剪范围
- 设置视频模式为填充模式
//默认为KSYEditKit#SCALING_MODE_FULL_FILL模式
mEditKit.setScalingMode(KSYEditKit#SCALING_MODE_BEST_FIT);
/**
* set crop mode
*
* @param mode
* @see KSYEditKit#SCALING_MODE_BEST_FIT 填充模式
* @see KSYEditKit#SCALING_MODE_CROP 裁剪模式
* @see KSYEditKit#SCALING_MODE_FULL_FILL 默认
*/
public void setScalingMode(int mode)- 设置画布比例
//默认为屏幕比例(SCALE_TYPE_9_16)
mEditKit.setScalingMode(KSYEditKit#SCALE_TYPE_3_4);
/**
* set crop type
*
* @param type
* @see KSYEditKit#SCALE_TYPE_9_16
* @see KSYEditKit#SCALE_TYPE_3_4
* @see KSYEditKit#SCALE_TYPE_1_1
*/
public void setScaleType(int type)- 根据画布比例更新画布
//默认全屏显示预览
int previewWidth = mScreenWidth;
int previewHeight = mScreenHeight;
//根据不同比例来更新预览区域大小
//to 3:4
if (mScaleType == KSYEditKit.SCALE_TYPE_3_4) {
previewHeight = previewWidth * 4 / 3;
}
//to 1:1
if (mScaleType == KSYEditKit.SCALE_TYPE_1_1) {
previewHeight = previewWidth;
}
RelativeLayout.LayoutParams previewParams = (RelativeLayout.LayoutParams) mPreviewLayout
.getLayoutParams();
previewParams.height = previewHeight;
previewParams.width = previewWidth;
mPreviewLayout.setLayoutParams(previewParams);- 设置视频模式为裁剪模式
//默认为KSYEditKit#SCALING_MODE_FULL_FILL模式
mEditKit.setScalingMode(KSYEditKit#SCALING_MODE_CROP);- 设置画布比例
//默认为屏幕比例(SCALE_TYPE_9_16)
mEditKit.setScalingMode(KSYEditKit#SCALE_TYPE_3_4);- 根据画布比例更新画布
//默认全屏显示预览
int previewWidth = mScreenWidth;
int previewHeight = mScreenHeight;
//根据不同比例来更新预览区域大小
//to 3:4
if (mScaleType == KSYEditKit.SCALE_TYPE_3_4) {
previewHeight = previewWidth * 4 / 3;
}
//to 1:1
if (mScaleType == KSYEditKit.SCALE_TYPE_1_1) {
previewHeight = previewWidth;
}
RelativeLayout.LayoutParams previewParams = (RelativeLayout.LayoutParams) mPreviewLayout
.getLayoutParams();
previewParams.height = previewHeight;
previewParams.width = previewWidth;
mPreviewLayout.setLayoutParams(previewParams);- 裁剪画布
//裁剪模式下，并且有多余的区域需要裁剪才进行裁剪，否则不进行裁剪
if (mEditKit.getCropScale() <= 0 || mScaleMode != KSYEditKit.SCALING_MODE_CROP) {
return;
}
RelativeLayout.LayoutParams previewParams = (RelativeLayout.LayoutParams) mPreviewLayout
.getLayoutParams();
int previewHeight = previewParams.height;
int previewWidth = previewParams.width;
//只有裁剪模式才需要更新预览的显示区域
if (!mEditKit.getIsLandscape()) {
//竖屏模式，上下裁剪，
//更新窗口位置参数
float newY = (mLastRawY - mPreviewTouchStartY);
mMaxCrop = previewParams.topMargin;
mMinCrop = 0.f - mEditKit.getCropScale() * (float) previewHeight + previewParams
.topMargin;
//不能超出可裁剪范围
if (newY > mMaxCrop) {
newY = mMaxCrop;
}
if (newY < mMinCrop) {
newY = mMinCrop;
}
float top = newY / previewHeight;
//更新裁剪区域更新预览显示
mEditKit.setPreviewCrop(0.f, 0.f - top, 1.f, 0.f);
} else {
//横屏模式左右裁剪
float newX = (mLastRawX - mPreviewTouchStartX);
mMaxCrop = 0.f;
mMinCrop = 0.f - mEditKit.getCropScale() * (float) previewWidth + previewParams
.leftMargin;
//不能超出可裁剪范围
if (newX > mMaxCrop) {
newX = mMaxCrop;
}
if (newX < mMinCrop) {
newX = mMinCrop;
}
float left = newX / previewWidth;
//根据裁剪范围，跟新预览的显示区域
mEditKit.setPreviewCrop(0.f - left, 0.f, 0.f, 1.f);
}
========================= interface begin=================================
/**
* crop preview
*
* @param left The percentage of the video clipping to the left
* @param top The percentage of the video clipping to the top
*/
public void setPreviewCrop(float left, float top, float w, float h)
==========================interface end ================================
