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