...
| Code Block | ||||||||
|---|---|---|---|---|---|---|---|---|
| ||||||||
/**
* Set paddings
* @param padding padding value to set
**/
public void setPaddingLeft(int paddingLeft);
public void setPaddingRight(int paddingRight);
public void setPaddingTop(int paddingTop);
public void setPaddingBottom(int paddingBottom);
/**
* Set position
* @param position box position to set
**/
public void setPosition(BoxPosition position);
/**
* Compute location and size of this box and all of it's content
* @param layouts aggregator collection to put computed layouts to
*/
public void computeLayout(ArrayList<IVideoMixerLayout.Layout> layouts);
/**
* Compute box location inside the parent Box including caption text placement
* @param parent parent box
* @param yuvFrame frame to compute location
* @return frame with location computed
*/
public static Box computeBoxWithFrame(Box parent, YUVFrame yuvFrame);
/**
* Scale box to the size closest to size of the parent, preserving aspect ratio
*/
public void fillParent();
/**
* Sets box size without saving aspect ratio, crops image from center
*/
public void fillParentNoScale(); |
Возможные позиции для размещения объекта класса Box:
...
Выходной поток микшера для приведенного примера и трех входящих потоков будет выглядеть так:
Обрезка картинок вокруг центра при собственном варианте размещения картинок
Для обрезки картинок с выделением центральной части, аналогично CropNoPaddingGridLayout, при создании собственного варианта размещения картинок, необходимо вместо метода Box,fillParent() использовать Box.fillParentNoScale(). Например, вариант размещения картинок по имени с обрезкой вокруг центра:
| Code Block | ||||||||
|---|---|---|---|---|---|---|---|---|
| ||||||||
package com.flashphoner.mixerlayout;
// Import mixer layout interface
import com.flashphoner.media.mixer.video.presentation.BoxPosition;
import com.flashphoner.sdk.media.IVideoMixerLayout;
// Import YUV frame description
import com.flashphoner.sdk.media.YUVFrame;
// Import Box class for picture operations
import com.flashphoner.media.mixer.video.presentation.Box;
// Import MixerConfig class
import com.flashphoner.server.commons.rmi.data.impl.MixerConfig;
// Import Java packages to use
import java.awt.*;
import java.util.ArrayList;
public class SideBySideLayout implements IVideoMixerLayout {
// Owner's stream name
private static final String USERFOR = "user_for";
// Challenger's stream name
private static final String USERAGAINST = "user_against";
/**
* Function to compute layout, will be called by mixer before encoding output stream picture
* This example computes grid layout
* @param yuvFrames - incoming streams raw pictures array in YUV format
* @param strings - incoming streams names array
* @param canvasWidth - mixer output picture canwas width
* @param canvasHeight - mixer output picture canwas heigth
* @return array of pictures layouts
*/
@Override
public Layout[] computeLayout(YUVFrame[] yuvFrames, String[] strings, int canvasWidth, int canvasHeight) {
// This object represents mixer canvas
Box mainBox = new Box(null, canvasWidth, canvasHeight);
// Container to place CHALLENGER stream pictures
Box userForContainer = new Box(mainBox, canvasWidth / 2, canvasHeight);
userForContainer.setPosition(BoxPosition.LEFT);
// Container to place OWNER stream pictures
Box userAgainstContainer = new Box(mainBox, canvasWidth / 2, canvasHeight);
userAgainstContainer.setPosition(BoxPosition.RIGHT);
// Iterate through incoming stream pictures array
for (int c = 0; c < yuvFrames.length; c++) {
String name = strings[c];
Box container;
// Chhose container depending on stream name
if (name.contains(USERFOR)) {
container = userForContainer;
} else if (name.contains(USERAGAINST)) {
container = userAgainstContainer;
} else {
// Wrong stream name
continue;
}
// Fill the container by the stream picture
Box frameBox = Box.computeBoxWithFrame(container, yuvFrames[c]);
frameBox.fillParentNoScale();
}
// Prepare an array to return layout calculated
ArrayList<IVideoMixerLayout.Layout> layout = new ArrayList<>();
// Calculate mixer layout
mainBox.computeLayout(layout);
// Return the result
return layout.toArray(new IVideoMixerLayout.Layout[layout.size()]);
}
/**
* The function for internal use. Must be overriden.
*/
@Override
public void setConfig(MixerConfig mixerConfig) {
}
}
|
Управление размещением картинок при создании микшера
...