求java获取本地flash文件宽高数据

2014-07-01 09:51:54 228 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

在本地有一个swf文件，我现在想用java代码获取这个swf的宽高值，在网上只找到一个源码，还运行报错，求大神

...全文

不用API Key也能玩转Obsidian AI：本地大模型离线配置全攻略本文详细介绍了如何在无需API Key的情况下，通过本地部署大型语言模型（LLM）为Obsidian注入AI能力。文章以Ollama为例，提供了从环境准备、模型选择到与Obsidian插件（如Text Generator）集成的完整配置攻略，旨在帮助用户打造一个安全、离线可用的智能笔记工作流，实现数据隐私与AI助力的完美结合。阅读详情

虎行

Java SE 62,620 成员 307,251 内容

+ 关注 + 加入社区

切换为时间正序

冰思雨 2014-07-02

打赏
举报

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.FileChannel.MapMode;
import java.util.zip.DataFormatException;
import java.util.zip.Inflater;

public class SWFHeader {

	public static final int HEADER_BUFFER_SIZE = 512;
	
	public static SWFHeader load(File file) throws IOException, IllegalAccessException{
		FileChannel fc = new FileInputStream(file).getChannel();
		ByteBuffer buffer = fc.map(MapMode.READ_ONLY, 0L, HEADER_BUFFER_SIZE);
		fc.close();
		SWFHeader header = new SWFHeader();
		header.format = new String(new char[]{(char)buffer.get(),(char)buffer.get(),(char)buffer.get()});
		header.version = buffer.get()&0xFF;
		header.uncompressedFileLength = buffer.get()&0xFF | ((buffer.get()&0xFF)<<8) | ((buffer.get()&0xFF)<<16) | ((buffer.get()&0xFF)<<32);
		if(header.format.charAt(0)=='C'){
			Inflater decompr = new Inflater();
			byte[] array = new byte[HEADER_BUFFER_SIZE-8];
			buffer.get(array);
			decompr.setInput(array);
			try {
				decompr.inflate(array);
				buffer = ByteBuffer.wrap(array);
			} catch (DataFormatException e) {
				throw new IllegalAccessException("Unzip data error : "+e.getMessage());
			}
		}
		if(header.format.charAt(0)=='Z'){
			throw new IllegalAccessException("not support LZMA compressed data");
		}
		header.ctrlCode = buffer.get();
		switch (header.ctrlCode) {
		case 0x50:
			header.height = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			header.width  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.height /= 10; 
			header.width /= 10; 
			break;
		case 0x58:
			header.height  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.width = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			header.height /= 40; 
			header.width /= 10; 
			break;
		case 0x60:
			header.height  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.width  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.height /= 10; 
			header.width /= 10; 
			break;
		case 0x68:
			buffer.get();
			header.height = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			buffer.get();
			header.width = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			header.height /= 40; 
			header.width /= 10;
			break;
		case 0x70:
			buffer.get();
			header.height = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			buffer.get();
			header.width  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.height /= 10; 
			header.width /= 10; 
			break;
		case 0x78:
			buffer.get();
			header.height  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			buffer.get();
			header.width = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			header.height /= 40; 
			header.width /= 10;
			break;
		case (byte)0x80:
			buffer.get();
			header.height  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			buffer.get();
			header.width  = ( ((buffer.get()&0x0F)<<16) | ((buffer.get()&0xFF)<<8) | (buffer.get() & 0xFF) ) >>> 4;
			header.height /= 10; 
			header.width /= 10; 
			break;
		case (byte)0x88:
			buffer.get();
			header.height = ((buffer.get()&0xFF)<<16) | ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			buffer.get();buffer.get();
			header.width = ((buffer.get()&0xFF)<<8) | buffer.get() & 0xFF ;
			header.height /= 40; 
			header.width /= 10;
			break;
		default:
			break;
		}
		return header;
	}
	
	private String format;
	private int version;
	private long uncompressedFileLength;
	private byte ctrlCode;
	private int width;
	private int height;
	
	@Override
	public String toString() {
		final char[] HEXs = new char[]{'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
		StringBuilder builder = new StringBuilder();
		builder.append("{format:\"").append(format).append("\",version:").append(version);
		builder.append(",uncompressedFileLength:").append(uncompressedFileLength);
		builder.append(",ctrlCode:0x").append(HEXs[((ctrlCode&0xF0)>>4)]).append(HEXs[(ctrlCode&0x0F)]);
		builder.append(",width:").append(width).append(",height:").append(height).append("}");
		return builder.toString();
	}
	
	public String getFormat() {
		return format;
	}

	public int getVersion() {
		return version;
	}

	public long getUncompressedFileLength() {
		return uncompressedFileLength;
	}

	public byte getCtrlCode() {
		return ctrlCode;
	}

	public int getWidth() {
		return width;
	}

	public int getHeight() {
		return height;
	}

	public static void main(String[] args) throws IOException, IllegalAccessException {
		File file = new File("D:\\Program Files\\x86\\Tencent\\QQLive\\SysData\\Loading.swf");
//		File file = new File("D:\\tmp\\蚊子的艳遇.swf");
		System.out.println(file.length());
		System.out.println(SWFHeader.load(file));

	}
}

很久之前就开始了 2014-07-01

打赏
举报

给你源码！ http://www.iteye.com/topic/348529 测试可用！

rumlee 2014-07-01

打赏
举报

http://wenku.baidu.com/link?url=bptGA6PJv6m9nkgWgGrVqmeFUX1d1odmSaOtojBorUANWyXuLDsdlP1rRKpiQaljNVURQYLk5CEOyucTAlg8QrxH4K5xRcJx8RYijzn_IbS 你看一下这个就了解了。分析一下swf文件的文件头信息即可。文件头中有帧尺寸应该就是大小。

很久之前就开始了 2014-07-01

打赏
举报

引用 6 楼 chenwanli1111 的回复:

弄好了，但是这个方式好慢，完全达不到效率要求

不明白你的SWF有多大？ http://www.iteye.com/topic/348529 这个源码竟然不能满足你的要求？

虎行 2014-07-01

打赏
举报

弄好了，但是这个方式好慢，完全达不到效率要求

虎行 2014-07-01

打赏
举报

引用 4 楼 xmt1139057136 的回复:

[quote=引用 2 楼 maihao110 的回复:] 给你源码！ http://www.iteye.com/topic/348529 测试可用！

设置一下你的虚拟机的大小就可以的了[/quote] 考虑到了这方面，不太懂虚拟机内存，照着网上的把配置文件内存写大了，还是存在问题，而且仅仅是一个十几兆的swf文件

业余草 2014-07-01

打赏
举报

引用 2 楼 maihao110 的回复:

给你源码！ http://www.iteye.com/topic/348529 测试可用！

设置一下你的虚拟机的大小就可以的了

虎行 2014-07-01

打赏
举报

引用 1 楼 rumlee 的回复:

http://wenku.baidu.com/link?url=bptGA6PJv6m9nkgWgGrVqmeFUX1d1odmSaOtojBorUANWyXuLDsdlP1rRKpiQaljNVURQYLk5CEOyucTAlg8QrxH4K5xRcJx8RYijzn_IbS 你看一下这个就了解了。分析一下swf文件的文件头信息即可。文件头中有帧尺寸应该就是大小。

就是用的这个，CWS解压的时候出现内存溢出问题 Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:2786) at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94) at nr.util.SWFDecompressor.uncompress(SWFDecompressor.java:93) at nr.util.SWFDecompressor.readFile2(SWFDecompressor.java:58) at nr.service.LessonsImport.printFlashSize1(LessonsImport.java:552) at nr.service.LessonsImport.main(LessonsImport.java:508)

求java获取本地flash文件宽高数据

相关推荐