import com.google.common.collect.ImmutableList;

import net.bramp.ffmpeg.builder.FFmpegBuilder;

import java.util.ArrayList;

import java.util.List;

/***

 * 适用于hls协议的构造器,<a href="https://ffmpeg.org/ffmpeg-formats.html#hls-1">hls协议相关参数</a>

 *  @author dqk

 */

public class HLSFFmpegBuilder extends FFmpegBuilder {

    /***

     * Set the maximum number of playlist entries. If set to 0 the list file will contain all the segments. Default value is 5.

     */

    private Integer hlsListSize = 5;

    /***

     * Set the target segment length in seconds. Default value is 2. Segment will be cut on the next key frame after this time has passed.

     */

    private Integer hlsTime = 2;

    /***

     * This is a deprecated option, you can use hls_list_size and hls_flags delete_segments instead it

     *

     * This option is useful to avoid to fill the disk with many segment files, and limits the maximum number of segment files written to disk to wrap.

     */

    @Deprecated

    private Integer hlsWrap = 0;

    public HLSFFmpegBuilder setHlsListSize(Integer hlsListSize) {

        this.hlsListSize = hlsListSize;

        return this;

    }

    public HLSFFmpegBuilder setHlsTime(Integer hlsTime) {

        this.hlsTime = hlsTime;

        return this;

    }

    public HLSFFmpegBuilder setHlsWrap(Integer hlsWrap) {

        this.hlsWrap = hlsWrap;

        return this;

    }

    public Integer getHlsListSize() {

        return hlsListSize;

    }

    public Integer getHlsTime() {

        return hlsTime;

    }

    public Integer getHlsWrap() {

        return hlsWrap;

    }

    @Override

    public List<String> build() {

        List<String> args = super.build();

        List<String> temp = new ArrayList<>();

        setFormat("hls");

        if(this.hlsWrap != null){

            temp.add("-hls_wrap");

            temp.add(hlsWrap.toString());

        }

        if(this.hlsTime != null){

            temp.add("-hls_time");

            temp.add(hlsTime.toString());

        }

        if(this.hlsListSize != null){

            temp.add("-hls_list_size");

            temp.add(hlsListSize.toString());

        }

        for(String arg: temp){

            args.add(arg);

        }

        List<String> newargs = ImmutableList.copyOf(args);

        return newargs;

    }

}

import com.google.common.collect.ImmutableList;

import net.bramp.ffmpeg.builder.FFmpegBuilder;

import java.util.ArrayList;

import java.util.List;

/**

 * 为了方便拓展api中没有的参数

 */

public class GkFFmpegBuilder extends FFmpegBuilder {

    private Long itsoffset;

    @Override

    public List<String> build() {

        // 该数组为不可变数组 （原因未知）

        List<String> args = super.build();

        List<String> temp = new ArrayList<>();

        if(this.itsoffset != null){

            temp.add("-itsoffset");

            temp.add(this.itsoffset.toString());

        }

        for(String arg: args){

            temp.add(arg);

        }

        List<String> newargs = ImmutableList.copyOf(temp);

        return newargs;

    }

    public Long getItsoffset() {

        return itsoffset;

    }

    public GkFFmpegBuilder setItsoffset(Long itsoffset) {

        this.itsoffset = itsoffset;

        return this;

    }

}