BytesGrabber连续截图功能稳定，本次增加其他几个Grabber连续截图功能语法糖实现，老版本暂不支持连续截图

corelib/videoimageshot/src/main/java/cc/eguid/cv/corelib/videoimageshot/grabber/BufferGrabber.java

@@ -19,7 +19,7 @@ public interface BufferGrabber{
 	
 	/**
 	 * 抓取图像缓冲区（默认获取BGR数据）
-	 * @param url-视频地址
+	 * @param url 视频地址
 	 * @return
 	 * @throws IOException
 	 */
@@ -27,11 +27,31 @@ public interface BufferGrabber{
 
 	/**
 	 * 抓取图像缓冲区
-	 * @param url -视频地址
-	 * @param fmt -图像数据结构（默认BGR24）
+	 * @param url 视频地址
+	 * @param fmt 图像数据结构（默认BGR24）
 	 * @return
 	 * @throws IOException
 	 */
 	ByteBuffer grabBuffer(String url, Integer fmt) throws IOException;
 
+	/**
+	 * 连续截图获取多个图像缓冲（默认BGR24像素格式）
+	 * @param url 视频地址
+	 * @param sum 截图总数
+	 * @param interval 间隔（每隔几帧截图一次，需要自行确定视频帧率）
+	 * @return
+	 * @throws IOException
+	 */
+	ByteBuffer[] grabBuffers(String url,int sum, int interval) throws IOException;
+	
+	/**
+	 * 连续截图获取多个图像缓冲
+	 * @param url -视频地址
+	 * @param fmt -图像数据结构（默认BGR24）
+	 * @param sum 截图总数
+	 * @param interval 间隔（每隔几帧截图一次，需要自行确定视频帧率）
+	 * @return
+	 * @throws IOException
+	 */
+	ByteBuffer[] grabBuffers(String url, Integer fmt,int sum, int interval) throws IOException;
 }

corelib/videoimageshot/src/main/java/cc/eguid/cv/corelib/videoimageshot/grabber/BufferedImageGrabber.java

@@ -27,5 +27,26 @@ public interface BufferedImageGrabber{
 	 * @throws IOException
 	 */
 	BufferedImage grabBufferImage(String url, Integer fmt) throws IOException;
+	
+	/**
+	 * 连续抓取图像
+	 * @param url -视频地址
+	 * @param sum 截图总数
+	 * @param interval 间隔（每隔几帧截图一次，需要自行确定视频帧率）
+	 * @return
+	 * @throws IOException
+	 */
+	BufferedImage[] grabBufferImages(String url, int sum, int interval) throws IOException;
+	
+	/**
+	 * 连续抓取图像
+	 * @param url -视频地址
+	 * @param fmt -图像数据结构（可选，为空默认BGR24）
+	 * @param sum 截图总数
+	 * @param interval 间隔（每隔几帧截图一次，需要自行确定视频帧率）
+	 * @return
+	 * @throws IOException
+	 */
+	BufferedImage[] grabBufferImages(String url, Integer fmt,int sum, int interval) throws IOException;
 
 }

corelib/videoimageshot/src/main/java/cc/eguid/cv/corelib/videoimageshot/grabber/ffmpeg/FFmpeg4VideoImageGrabber.java

@@ -99,6 +99,26 @@ public class FFmpeg4VideoImageGrabber extends GrabberTemplate4 implements Base64
 		return buf;
 	}
 
+	@Override
+	public ByteBuffer[] grabBuffers(String url, int sum, int interval) throws IOException {
+		return grabBuffers(url,null,sum,interval);
+	}
+
+	@Override
+	public ByteBuffer[] grabBuffers(String url, Integer fmt, int sum, int interval) throws IOException {
+		if(sum>0) {
+			byte[][] bytes=grabBytes(url,fmt, sum, interval);
+			if(bytes!=null) {
+				ByteBuffer[] bufs=new ByteBuffer[sum];
+				for(int i=0;i<bytes.length;i++) {
+					bufs[i]=ByteBuffer.wrap(bytes[i]);
+				}
+				return bufs;
+			}
+		}
+		return null;
+	}
+	
 	@Override
 	public BufferedImage grabBufferImage() throws IOException {
 		return grabBufferImage(this.url,null);
@@ -117,6 +137,28 @@ public class FFmpeg4VideoImageGrabber extends GrabberTemplate4 implements Base64
 		return image;
 	}
 	
+	@Override
+	public BufferedImage[] grabBufferImages(String url, int sum, int interval) throws IOException {
+		return grabBufferImages(url,null,sum,interval);
+	}
+
+	@Override
+	public BufferedImage[] grabBufferImages(String url, Integer fmt, int sum, int interval) throws IOException {
+		BufferedImage[] images=null;
+		if(sum>0) {
+			byte[][] bytes=grabBytes(url,fmt, sum, interval);
+			if(bytes!=null) {
+				images=new BufferedImage[sum];
+				for(int i=0;i<bytes.length;i++) {
+					images[i]= JavaImgConverter.BGR2BufferedImage(bytes[i],this.width,this.height);
+				}
+				return images;
+			}
+		}
+		return null;
+	}
+
+	
 	@Override
 	public String getBase64Image(String url) throws IOException {
 		return getBase64Image(url, null);

corelib/videoimageshot/src/main/java/cc/eguid/cv/corelib/videoimageshot/grabber/ffmpeg/FFmpegVideoImageGrabber.java

@@ -136,5 +136,49 @@ public class FFmpegVideoImageGrabber extends GrabberTmplate implements BufferGra
 		this.fmt = fmt;
 	}
 
+	/**
+	 * 未实现，推荐使用FFmpeg4VideoImageGrabber
+	 * @see FFmpeg4VideoImageGrabber
+	 */
+	@Deprecated
+	@Override
+	public ByteBuffer[] grabBuffers(String url, int sum, int interval) throws IOException {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	/**
+	 * 未实现，推荐使用FFmpeg4VideoImageGrabber
+	 * @see FFmpeg4VideoImageGrabber
+	 */
+	@Deprecated
+	@Override
+	public ByteBuffer[] grabBuffers(String url, Integer fmt, int sum, int interval) throws IOException {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	/**
+	 * 未实现，推荐使用FFmpeg4VideoImageGrabber
+	 * @see FFmpeg4VideoImageGrabber
+	 */
+	@Deprecated
+	@Override
+	public BufferedImage[] grabBufferImages(String url, int sum, int interval) throws IOException {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	/**
+	 * 未实现，推荐使用FFmpeg4VideoImageGrabber
+	 * @see FFmpeg4VideoImageGrabber
+	 */
+	@Deprecated
+	@Override
+	public BufferedImage[] grabBufferImages(String url, Integer fmt, int sum, int interval) throws IOException {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
 	
 }

corelib/videoimageshot/src/main/java/cc/eguid/cv/corelib/videoimageshot/grabber/ffmpeg/GrabberTemplate4.java

@@ -57,7 +57,7 @@ public abstract class GrabberTemplate4 implements Grabber{
 	
 	private SwsContext sws_ctx;//图像缩放和像素格式转换上下文
 	private AVFrame outFrameRGB;//用于存储转换后的RGB像素数据，默认转换成RGB
-    
+ 
 	public GrabberTemplate4() {
 		super();
 	}
@@ -313,7 +313,7 @@ public abstract class GrabberTemplate4 implements Grabber{
 			//读取错误或读取完成
 			return null;
 		}finally {
-			av_free(buffer);//Don't free buffer
+			av_free(buffer);//Don't free buffer?	Of course not!
 			freeAndClose();
 		}
 	}