使用ImageMagick实现多张图片拼接为gif(多线程版)

官网: https://imagemagick.org/

直接上代码

ExecutorService es = Executors.newFixedThreadPool(10);
List<File> images = getImageFiles(sceneDir);
CountDownLatch cdl = new CountDownLatch(images.size());
// 拷贝图片
for (File file : images) {System.out.println(file.getPath());final File dstImage = new File(deploySceneImageDir, file.getName());es.submit(new Runnable() {@Overridepublic void run() {// todo 预处理cdl.countDown();}});
}logger.info("等待图片预处理完成");
cdl.await();
String gifPath = String.join(File.separator,deploySceneDir,"poster.gif");
// 拼接gif
es.submit(new Runnable() {@Overridepublic void run() {toGif(new File(deploySceneImageDir),gifPath,delay,0);}
});
logger.info("完成图片的处理");
es.shutdown();

checker

public boolean toGif(File srcDir, String outputImagePath,int delay,int loop){File[] files = srcDir.listFiles();if(files == null){return false;}int gifExpectSize = 0;List<String> images = new ArrayList<>();for (File file : files) {images.add("\""+file.getPath()+"\"") ;// 处理“convert: unable to open image”问题gifExpectSize += file.length();}System.out.println("期望的gif大小:"+(gifExpectSize/1024.0/1024.0)+"M");String imagePaths = String.join(" ",images);return toGif(imagePaths,outputImagePath,delay,loop);}

toGif方法

public boolean toGif(String inputImagePath, String outputImagePath,int delay,int loop){List<String> command = new ArrayList<>();// -delay参数应该在输入图像之前指定command.add("-delay");// 指定每一帧之间的延迟时间（以毫秒为单位），这里是100毫秒。command.add(delay+"");command.add(inputImagePath);command.add("-loop");command.add(loop+"");command.add(outputImagePath);return execute(command);}

execute方法

public boolean execute(List<String> command) {command.add(0,convertPath);try {String execCommand = Arrays.toString(command.toArray()).replace(",","").replace("[","").replace("]","");System.out.println("图像处理命令:"+execCommand);// 执行命令ProcessBuilder pb = new ProcessBuilder(command);Process process = pb.start();// 处理标准错误流BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));String line;while ((line = errorReader.readLine()) != null) {System.err.println(line);}// 等待命令执行完成int exitCode = process.waitFor();return  exitCode == 0;} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {e.printStackTrace();}return false;}

public List<File> getImageFiles(String sceneDir){List<File> ret = new ArrayList<>();if (new File(sceneDir).listFiles() == null) {return ret;}for (File file : new File(sceneDir).listFiles()) {if(file.getName().endsWith(".JPG")){ret.add(file);}}return ret;}