SecureSmartCam » ObscuraCam

package org.witness.ssc.video;

import android.content.Context;

import android.util.Log;

import com.github.hiteshsondhi88.libffmpeg.ExecuteBinaryResponseHandler;

import com.github.hiteshsondhi88.libffmpeg.FFmpeg;

import com.github.hiteshsondhi88.libffmpeg.LoadBinaryResponseHandler;

import com.github.hiteshsondhi88.libffmpeg.exceptions.FFmpegCommandAlreadyRunningException;

import com.github.hiteshsondhi88.libffmpeg.exceptions.FFmpegNotSupportedException;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.text.DecimalFormat;

import java.util.ArrayList;

public class FFMPEGWrapper {

        Context context;

    FFmpeg ffmpeg;

        public FFMPEGWrapper(Context _context) throws FileNotFoundException, IOException {

                context = _context;

                ffmpeg = FFmpeg.getInstance(context);

        try {

                        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

                                @Override

                                public void onStart() {}

                                @Override

                                public void onFailure() {

                    Log.e(getClass().getName(),"Failed to install binary");

                }

                                @Override

                                public void onSuccess() {

                    Log.i(getClass().getName(),"SUCCESS: installed binary");

                }

                                @Override

                                public void onFinish() {}

                        });

                } catch (FFmpegNotSupportedException e) {

                        // Handle if FFmpeg is not supported by device

            Log.e(getClass().getName(),"Failed to install binary",e);

                }

        }

        public void processVideo(

                        ArrayList<RegionTrail> regionTrails, File inputFile, File outputFile, int frameRate, float startTime, float duration,

                        boolean compressVideo, int obscureVideoAmount, int obscureAudioAmount, ExecuteBinaryResponseHandler listener) throws Exception {

        DecimalFormat df = new DecimalFormat("####0.00");

        ArrayList<String> alCmds = new ArrayList<>();

        alCmds.add("-y");

        alCmds.add("-i");

        alCmds.add(inputFile.getCanonicalPath());

        if (duration > 0)

        {

            alCmds.add("-ss");

            alCmds.add(df.format(startTime));

            alCmds.add("-t");

            alCmds.add(df.format(duration));

        }

        if (frameRate > 0)

        {

            alCmds.add("-r");

            alCmds.add(frameRate+"");

        }

        if (compressVideo) {

            alCmds.add("-b:v");

            alCmds.add("500K");

        }

        if (obscureAudioAmount > 0) {

            alCmds.add("-filter_complex");

            alCmds.add("vibrato=f=" + obscureAudioAmount);

            alCmds.add("-b:a");

            alCmds.add("4K");

            alCmds.add("-ab");

            alCmds.add("4K");

            alCmds.add("-ar");

            alCmds.add("11025");

            alCmds.add("-ac");

            alCmds.add("1");

        }

        StringBuffer filters = new StringBuffer();

        if (obscureVideoAmount > 0) {

            int pixelScale = obscureVideoAmount;

            //scale down and up to fully pixelize

            filters.append("scale=iw/" + pixelScale + ":ih/" + pixelScale + ",scale=" + pixelScale + "*iw:" + pixelScale + "*ih:flags=neighbor,");

        }

        if (regionTrails.size() == 0) {

            //do what?

        }

        else {

            for (RegionTrail trail : regionTrails) {

                if (trail.isDoTweening() && trail.getRegionCount() > 1) {

                    int timeInc = 100;

                    for (int i = 0; i < ((int)duration); i = i + timeInc) {

                        ObscureRegion or = trail.getCurrentRegion(i, trail.isDoTweening());

                        if (or != null) {

                            int x = (int) or.getBounds().left;

                            int y = (int) or.getBounds().top;

                            int height = (int) or.getBounds().height();

                            int width = (int) or.getBounds().width();

                            String color = "black";

                            float timeStart = ((float) or.timeStamp) / 1000f;

                            float timeStop = (((float) or.timeStamp) + 100) / 1000f;

                            float timeEnd = duration / 1000f;

                            timeStop = Math.max(timeStop, timeEnd);

                            filters.append("drawbox=x=" + x + ":y=" + y

                                    + ":w=" + width + ":h=" + height

                                    + ":color=" + color

                                    + ":t=max"

                                    + ":enable='between(t,"

                                    + df.format(timeStart) + "," + df.format(timeStop) + ")',");

                        }

                    }

                } else {

                    for (Integer orKey : trail.getRegionKeys()) {

                        ObscureRegion or = trail.getRegion(orKey);

                        int x = (int) or.getBounds().left;

                        int y = (int) or.getBounds().top;

                        int height = (int) or.getBounds().height();

                        int width = (int) or.getBounds().width();

                        String color = "black";

                        filters.append("drawbox=x=" + x + ":y=" + y

                                + ":w=" + width + ":h=" + height

                                + ":color=" + color

                                + ":t=max");

                    }

                }

            }

        }

        if (filters.toString().length() > 0) {

                        Log.d(getClass().getName(), "filters: " + filters.toString());

                        alCmds.add("-vf");

                        String filterCmd = filters.toString();

                        alCmds.add(filterCmd.substring(0, filterCmd.length() - 1));

                }

        alCmds.add(outputFile.getCanonicalPath());

        String[] cmd = alCmds.toArray(new String[alCmds.size()]);

        try {

            // to execute "ffmpeg -version" command you just need to pass "-version"

            ffmpeg.execute(cmd,listener);

        } catch (FFmpegCommandAlreadyRunningException e) {

            // Handle if FFmpeg is already running

            Log.e(getClass().getName(),"already running");

        }

        }

        private void writeRedactData(File redactSettingsFile, ArrayList<RegionTrail> regionTrails, float widthMod, float heightMod, int mDuration) throws IOException {

                // Write out the finger data

                FileWriter redactSettingsFileWriter = new FileWriter(redactSettingsFile);

                PrintWriter redactSettingsPrintWriter = new PrintWriter(redactSettingsFileWriter);

                ObscureRegion or = null, lastOr = null;

                String orData = "";

                for (RegionTrail trail : regionTrails)

                {

                        if (trail.isDoTweening())

                        {

                                int timeInc = 100;

                                for (int i = 0; i < mDuration; i = i+timeInc)

                                {

                                        or = trail.getCurrentRegion(i, trail.isDoTweening());

                                        if (or != null)

                                        {

                                                orData = or.getStringData(widthMod, heightMod,i,timeInc, trail.getObscureMode());

                                                redactSettingsPrintWriter.println(orData);

                                        }

                                }

                        }

                        else

                        {

                                for (Integer orKey : trail.getRegionKeys())

                                {

                                        or = trail.getRegion(orKey);

                                        if (lastOr != null)

                                        {

                                                orData = lastOr.getStringData(widthMod, heightMod,or.timeStamp,or.timeStamp-lastOr.timeStamp, trail.getObscureMode());

                                        }

                                        redactSettingsPrintWriter.println(orData);

                                        lastOr = or;

                                }

                                if (or != null)

                                {

                                        orData = lastOr.getStringData(widthMod, heightMod,or.timeStamp,or.timeStamp-lastOr.timeStamp, trail.getObscureMode());

                                        redactSettingsPrintWriter.println(orData);

                                }

                        }

                }

                redactSettingsPrintWriter.flush();

                redactSettingsPrintWriter.close();

        }

        public FFmpeg getFFMPEG ()

    {

        return ffmpeg;

    }

}