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FFmpegAndroid/app/src/main/java/com/frank/ffmpeg/gif/HighQualityGif.java

105 lines
3.4 KiB

package com.frank.ffmpeg.gif;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;
import com.frank.ffmpeg.FFmpegCmd;
import com.frank.ffmpeg.util.FFmpegUtil;
import com.frank.ffmpeg.util.FileUtil;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
/**
* @author frank
* @date 2020-09-25 20:11
* @desc Extract frames, and convert to GIF
*/
public class HighQualityGif {
private final static String TAG = HighQualityGif.class.getSimpleName();
private final static int TARGET_WIDTH = 320;
private final static int TARGET_HEIGHT = 180;
private byte[] generateGif(String filePath, int startTime, int duration, int frameRate) throws IllegalArgumentException {
if (TextUtils.isEmpty(filePath)) {
return null;
}
String folderPath = Environment.getExternalStorageDirectory() + "/gif_frames/";
FileUtil.deleteFolder(folderPath);
String[] commandLine = FFmpegUtil.videoToImageWithScale(filePath, startTime, duration, frameRate, TARGET_WIDTH, folderPath);
FFmpegCmd.executeSync(commandLine);
File fileFolder = new File(folderPath);
if (!fileFolder.exists() || fileFolder.listFiles() == null) {
return null;
}
File[] files = fileFolder.listFiles();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
BeautyGifEncoder gifEncoder = new BeautyGifEncoder();
gifEncoder.setFrameRate(10);
gifEncoder.start(outputStream);
for (File file:files) {
Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
if (bitmap != null) {
gifEncoder.addFrame(bitmap);
}
}
gifEncoder.finish();
return outputStream.toByteArray();
}
private boolean saveGif(byte[] data, String gifPath) {
if (data == null || data.length == 0 || TextUtils.isEmpty(gifPath)) {
return false;
}
boolean result = true;
FileOutputStream outputStream = null;
try {
outputStream = new FileOutputStream(gifPath);
outputStream.write(data);
outputStream.flush();
} catch (IOException e) {
result = false;
} finally {
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return result;
}
/**
* convert video into GIF
* @param gifPath gifPath
* @param filePath filePath
* @param startTime where starts from the video(Unit: second)
* @param duration how long you want to convert(Unit: second)
* @param frameRate how much frames you want in a second
* @return convert GIF success or not
*/
public boolean convertGIF(String gifPath, String filePath, int startTime, int duration, int frameRate) {
byte[] data;
try {
data = generateGif(filePath, startTime, duration, frameRate);
} catch (IllegalArgumentException | OutOfMemoryError e) {
Log.e(TAG, "generateGif error=" + e.toString());
return false;
}
return saveGif(data, gifPath);
}
}