下载有关的DLL：/Files/popo0027/用到的文件.rar
SWFHeaderInfo.cs
/*
Darron Schall (darron@darronschall.com)
July 7th, 2003
File: SWFHeaderInfo.cs
Note: Some ideas for this code were used from the flasm
source code. See http://flasm.sourceforge.net
for more information on flasm.
Requires: This file requires "SharpZipLib", found at
http://www.icsharpcode.net/OpenSource/SharpZipLib/ for
decompressing compressed .swf files with the ZLib algorithm.
Description:
See the summary for the SWFHeaderInfo class
*/
using System;
using System.IO;
namespace FlashToImage
{
/// <summary>
/// SWFHeaderInfo is a class that exposes as properties the contents of
/// a .swf file header. The path to the .swf file is passed into
/// the constructor. The Status property is useful for
/// determining if the input was valid or not. It is either "OK" if
/// the swf header was successfully read, or an error message otherwise.
///
/// SWFHeaderInfo works for both compressed and uncompressed .swf files.
/// </summary>
public class SWFHeaderInfo
{
private byte bitPos; // bitPos is our "position" in out bitBuffer "array", valid values are 0-8 (8 means get a new buffer)
private byte bitBuffer; // this is a byte that we'll be treating like an array
uint nBits; // the number of bit used to store the data for the RECT type storing
// the movies xMin, xMax, yMin, and yMax values
private ICSharpCode.SharpZipLib.Zip.Compression.Inflater zipInflator; // used to decompressed swf
Stream swf; // either a FileStream or MemoryStream
// private internal data values
private byte mVersion;
private uint mLength;
private uint mxMin;
private uint mxMax;
private uint myMin;
private uint myMax;
private ushort mFrameRate;
private ushort mFrameCount;
private bool mCompressed;
private string mStatus;
// public read-only (because no "set" defined) properties
public byte Version
{
get
{
return mVersion;
}
}
public uint Length
{
get
{
return mLength;
}
}
public uint xMin
{
get
{
return mxMin;
}
}
public uint xMax
{
get
{
return mxMax;
}
}
public uint yMin
{
get
{
return myMin;
}
}
public uint yMax
{
get
{
return myMax;
}
}
public ushort FrameRate
{
get
{
return mFrameRate;
}
}
public ushort FrameCount
{
get
{
return mFrameCount;
}
}
public bool Compressed
{
get
{
return mCompressed;
}
}
public string Status
{
get
{
return mStatus;
}
}
public SWFHeaderInfo(string path)
{
char first; // C if compressed, F otherwise
// initialize
mVersion = 0;
mLength = 0;
mxMin = 0;
mxMax = 0;
myMin = 0;
mxMax = 0;
mFrameRate = 0;
mFrameCount = 0;
mCompressed = false;
mStatus = "No input specified";
// attempt to open the swf file
try
{
swf = new FileStream(path, FileMode.Open);
}
catch (Exception e)
{
mStatus = "Error opening swf file";
// We don't need to close the file here because there
// was a problem opening it.
//swf.Close();
return;
}
bitPos = 8; // set out bitPos to be "out of bounds" so the first call to getBits reads in
// a new byte from the file (the first byte)
// try to read the first byte of the file
try
{
first = (char)getBits(swf, 8);
}
catch (Exception e)
{
mStatus = "Error reading first byte file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
if (first == 'C')
{
// compressed swf file
mCompressed = true;
swf = decompressSwf(swf);
if (mStatus == "Error decompressing swf file")
{
// trouble decompressing.. bail out! - 08/04/03
swf.Close();
return;
}
// reset our "array" index so the first call to getBits reads a new byte
bitPos = 8;
// attempt to get the first byte of the file
try
{
first = (char)getBits(swf, 8);
}
catch (Exception e)
{
mStatus = "Error reading first byte file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
}
// wrapped everything in a try/catch block "just in case" for
// a little better error handling
try
{
// make sure the first 3 bytes are "FWS"
if (first != 'F' || (char)getBits(swf, 8) != 'W' || (char)getBits(swf, 8) != 'S')
{
// not a swf file!
mStatus = "File specified does not seem to be a valid .swf file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
// start collecting informatin
mVersion = (byte)getBits(swf, 8);
mLength = getDoubleWord(swf);
nBits = getBits(swf, 5);
mxMin = getBits(swf, nBits);
mxMax = getBits(swf, nBits) / 20;
myMin = getBits(swf, nBits);
myMax = getBits(swf, nBits) / 20;
mFrameRate = (ushort)(swf.ReadByte() << 8 | swf.ReadByte());
mFrameCount = (ushort)(getWord(swf));
mStatus = "OK";
}
catch (Exception e)
{
mStatus = "Error reading .swf header information";
return;
}
swf.Close();
}
// corrections for flash storing the byte values in little-endian format
// ported from the flasm source code
private uint getWord(Stream f)
{
return (uint)(f.ReadByte() | f.ReadByte() << 8);
}
// corrections for flash storing the byte values in little-endian format
// ported from the flasm source code
private uint getDoubleWord(Stream f)
{
return getWord(f) | (getWord(f) << 16);
}
// idea for this function borrowed from the flasm source code, but
// the function code is my creation
private uint getBits(Stream f, uint n)
{
uint returnbits = 0;
while (true)
{
// do we have more bits to read?
if (n >= 1)
{
// yes, more bits to read.... do we have unread bits in our buffer?
if (bitPos == 8)
{
// no more bits to read in our buffer, lets get a new
// buffer from f and reset the bitPos
bitPos = 0;
bitBuffer = (byte)f.ReadByte(); // read 8 bits at a time
}
// if we're here, we have more bits to read and
// we have unread bits in the buffer
returnbits <<= 1; // shift the returnbit value left 1 place
byte bitMask = (byte)(0x80 >> bitPos);
// determine if the next bit we add to return bits should
// be a 1 or a 0, based on the value of applying
// the bitMask to the bitBuffer. A quick example:
// bitBuffer = 01011010
// bitmask = 00001000
// ~~~~~~~~~~~~~~~~~~~~ anding the bits together yeilds:
// 00001000
// and because the result is equal to the bitmask, we add
// a 1 to the returnbits value.
returnbits |= (bitBuffer & bitMask) == bitMask ? (uint)1 : (uint)0;
n -= 1; // one less bit to read
bitPos += 1; // advance our "array" index
}
else
{
//no more bits to read, return what we read from f
return returnbits;
}
}
}
private Stream decompressSwf(Stream swf)
{
// seek to after the 4th byte and read in 4 bytes to determine the
// size that the buffer needs to be to uncompressed the swf file
swf.Seek(4, SeekOrigin.Begin);
uint bufferSize = getDoubleWord(swf);
// the uncompressedSwf byte array will be used as a MemoryStream
byte[] uncompressedSwf = new byte[bufferSize];
// only after the 8th bit is the ZLib compresseion applied, so just
// copy the first 8 bits from the compressed swf to the uncompressed swf
swf.Seek(0, SeekOrigin.Begin);
swf.Read(uncompressedSwf, 0, 8);
// set the first byte to be 'F' instead of 'C'
uncompressedSwf[0] = (byte)0x46;
zipInflator = new ICSharpCode.SharpZipLib.Zip.Compression.Inflater();
// because the zipInflator takes a byte array, not a FileStream,
// we need to declare a temporary byte array to use as the
// input for inflation
byte[] tmpSwf = new byte[bufferSize - 8];
// read the rest of the swf into our temporary byte array
swf.Read(tmpSwf, 0, (int)(bufferSize - 8));
// close the swf on disk because we have enough information in memory now
swf.Close();
zipInflator.SetInput(tmpSwf);
if (zipInflator.Inflate(uncompressedSwf, 8, (int)(bufferSize - 8)) == 0)
{
mStatus = "Error decompressing swf file";
}
// change our swf from a FileStream to a MemoryStream now, using the uncompressed swf data
return new MemoryStream(uncompressedSwf);
}
/*[STAThread]
public static void Main()
{
SWFHeaderInfo s = new SWFHeaderInfo("C:\\Development\\SWFHeaderInfo\\test.swf");
Console.WriteLine(s.Status);
if (s.Status == "OK")
{
Console.WriteLine("Version: " + s.Version);
Console.WriteLine("Length: " + s.Length);
Console.WriteLine("xMin: " + s.xMin);
Console.WriteLine("xMax: " + s.xMax);
Console.WriteLine("yMin: " + s.xMin);
Console.WriteLine("yMax: " + s.yMax);
Console.WriteLine("FrameRate: " + s.FrameRate);
Console.WriteLine("FrameCount: " + s.FrameCount);
Console.WriteLine("Compressed: " + s.Compressed);
}
// keep the input on the screen
Console.Read();
}
*/
}
}
Darron Schall (darron@darronschall.com)
July 7th, 2003
File: SWFHeaderInfo.cs
Note: Some ideas for this code were used from the flasm
source code. See http://flasm.sourceforge.net
for more information on flasm.
Requires: This file requires "SharpZipLib", found at
http://www.icsharpcode.net/OpenSource/SharpZipLib/ for
decompressing compressed .swf files with the ZLib algorithm.
Description:
See the summary for the SWFHeaderInfo class
*/
using System;
using System.IO;
namespace FlashToImage
{
/// <summary>
/// SWFHeaderInfo is a class that exposes as properties the contents of
/// a .swf file header. The path to the .swf file is passed into
/// the constructor. The Status property is useful for
/// determining if the input was valid or not. It is either "OK" if
/// the swf header was successfully read, or an error message otherwise.
///
/// SWFHeaderInfo works for both compressed and uncompressed .swf files.
/// </summary>
public class SWFHeaderInfo
{
private byte bitPos; // bitPos is our "position" in out bitBuffer "array", valid values are 0-8 (8 means get a new buffer)
private byte bitBuffer; // this is a byte that we'll be treating like an array
uint nBits; // the number of bit used to store the data for the RECT type storing
// the movies xMin, xMax, yMin, and yMax values
private ICSharpCode.SharpZipLib.Zip.Compression.Inflater zipInflator; // used to decompressed swf
Stream swf; // either a FileStream or MemoryStream
// private internal data values
private byte mVersion;
private uint mLength;
private uint mxMin;
private uint mxMax;
private uint myMin;
private uint myMax;
private ushort mFrameRate;
private ushort mFrameCount;
private bool mCompressed;
private string mStatus;
// public read-only (because no "set" defined) properties
public byte Version
{
get
{
return mVersion;
}
}
public uint Length
{
get
{
return mLength;
}
}
public uint xMin
{
get
{
return mxMin;
}
}
public uint xMax
{
get
{
return mxMax;
}
}
public uint yMin
{
get
{
return myMin;
}
}
public uint yMax
{
get
{
return myMax;
}
}
public ushort FrameRate
{
get
{
return mFrameRate;
}
}
public ushort FrameCount
{
get
{
return mFrameCount;
}
}
public bool Compressed
{
get
{
return mCompressed;
}
}
public string Status
{
get
{
return mStatus;
}
}
public SWFHeaderInfo(string path)
{
char first; // C if compressed, F otherwise
// initialize
mVersion = 0;
mLength = 0;
mxMin = 0;
mxMax = 0;
myMin = 0;
mxMax = 0;
mFrameRate = 0;
mFrameCount = 0;
mCompressed = false;
mStatus = "No input specified";
// attempt to open the swf file
try
{
swf = new FileStream(path, FileMode.Open);
}
catch (Exception e)
{
mStatus = "Error opening swf file";
// We don't need to close the file here because there
// was a problem opening it.
//swf.Close();
return;
}
bitPos = 8; // set out bitPos to be "out of bounds" so the first call to getBits reads in
// a new byte from the file (the first byte)
// try to read the first byte of the file
try
{
first = (char)getBits(swf, 8);
}
catch (Exception e)
{
mStatus = "Error reading first byte file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
if (first == 'C')
{
// compressed swf file
mCompressed = true;
swf = decompressSwf(swf);
if (mStatus == "Error decompressing swf file")
{
// trouble decompressing.. bail out! - 08/04/03
swf.Close();
return;
}
// reset our "array" index so the first call to getBits reads a new byte
bitPos = 8;
// attempt to get the first byte of the file
try
{
first = (char)getBits(swf, 8);
}
catch (Exception e)
{
mStatus = "Error reading first byte file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
}
// wrapped everything in a try/catch block "just in case" for
// a little better error handling
try
{
// make sure the first 3 bytes are "FWS"
if (first != 'F' || (char)getBits(swf, 8) != 'W' || (char)getBits(swf, 8) != 'S')
{
// not a swf file!
mStatus = "File specified does not seem to be a valid .swf file";
// close the swf file on error - 08/04/03
swf.Close();
return;
}
// start collecting informatin
mVersion = (byte)getBits(swf, 8);
mLength = getDoubleWord(swf);
nBits = getBits(swf, 5);
mxMin = getBits(swf, nBits);
mxMax = getBits(swf, nBits) / 20;
myMin = getBits(swf, nBits);
myMax = getBits(swf, nBits) / 20;
mFrameRate = (ushort)(swf.ReadByte() << 8 | swf.ReadByte());
mFrameCount = (ushort)(getWord(swf));
mStatus = "OK";
}
catch (Exception e)
{
mStatus = "Error reading .swf header information";
return;
}
swf.Close();
}
// corrections for flash storing the byte values in little-endian format
// ported from the flasm source code
private uint getWord(Stream f)
{
return (uint)(f.ReadByte() | f.ReadByte() << 8);
}
// corrections for flash storing the byte values in little-endian format
// ported from the flasm source code
private uint getDoubleWord(Stream f)
{
return getWord(f) | (getWord(f) << 16);
}
// idea for this function borrowed from the flasm source code, but
// the function code is my creation
private uint getBits(Stream f, uint n)
{
uint returnbits = 0;
while (true)
{
// do we have more bits to read?
if (n >= 1)
{
// yes, more bits to read.... do we have unread bits in our buffer?
if (bitPos == 8)
{
// no more bits to read in our buffer, lets get a new
// buffer from f and reset the bitPos
bitPos = 0;
bitBuffer = (byte)f.ReadByte(); // read 8 bits at a time
}
// if we're here, we have more bits to read and
// we have unread bits in the buffer
returnbits <<= 1; // shift the returnbit value left 1 place
byte bitMask = (byte)(0x80 >> bitPos);
// determine if the next bit we add to return bits should
// be a 1 or a 0, based on the value of applying
// the bitMask to the bitBuffer. A quick example:
// bitBuffer = 01011010
// bitmask = 00001000
// ~~~~~~~~~~~~~~~~~~~~ anding the bits together yeilds:
// 00001000
// and because the result is equal to the bitmask, we add
// a 1 to the returnbits value.
returnbits |= (bitBuffer & bitMask) == bitMask ? (uint)1 : (uint)0;
n -= 1; // one less bit to read
bitPos += 1; // advance our "array" index
}
else
{
//no more bits to read, return what we read from f
return returnbits;
}
}
}
private Stream decompressSwf(Stream swf)
{
// seek to after the 4th byte and read in 4 bytes to determine the
// size that the buffer needs to be to uncompressed the swf file
swf.Seek(4, SeekOrigin.Begin);
uint bufferSize = getDoubleWord(swf);
// the uncompressedSwf byte array will be used as a MemoryStream
byte[] uncompressedSwf = new byte[bufferSize];
// only after the 8th bit is the ZLib compresseion applied, so just
// copy the first 8 bits from the compressed swf to the uncompressed swf
swf.Seek(0, SeekOrigin.Begin);
swf.Read(uncompressedSwf, 0, 8);
// set the first byte to be 'F' instead of 'C'
uncompressedSwf[0] = (byte)0x46;
zipInflator = new ICSharpCode.SharpZipLib.Zip.Compression.Inflater();
// because the zipInflator takes a byte array, not a FileStream,
// we need to declare a temporary byte array to use as the
// input for inflation
byte[] tmpSwf = new byte[bufferSize - 8];
// read the rest of the swf into our temporary byte array
swf.Read(tmpSwf, 0, (int)(bufferSize - 8));
// close the swf on disk because we have enough information in memory now
swf.Close();
zipInflator.SetInput(tmpSwf);
if (zipInflator.Inflate(uncompressedSwf, 8, (int)(bufferSize - 8)) == 0)
{
mStatus = "Error decompressing swf file";
}
// change our swf from a FileStream to a MemoryStream now, using the uncompressed swf data
return new MemoryStream(uncompressedSwf);
}
/*[STAThread]
public static void Main()
{
SWFHeaderInfo s = new SWFHeaderInfo("C:\\Development\\SWFHeaderInfo\\test.swf");
Console.WriteLine(s.Status);
if (s.Status == "OK")
{
Console.WriteLine("Version: " + s.Version);
Console.WriteLine("Length: " + s.Length);
Console.WriteLine("xMin: " + s.xMin);
Console.WriteLine("xMax: " + s.xMax);
Console.WriteLine("yMin: " + s.xMin);
Console.WriteLine("yMax: " + s.yMax);
Console.WriteLine("FrameRate: " + s.FrameRate);
Console.WriteLine("FrameCount: " + s.FrameCount);
Console.WriteLine("Compressed: " + s.Compressed);
}
// keep the input on the screen
Console.Read();
}
*/
}
}
具体实现：
引入：
ICSharpCode.SharpZipLib.dll
SWFToImage.dll----修改：嵌入互操作类型：False
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FlashToImage
{
class Program
{
static void Main(string[] args)
{
FlashCapture.FilePreviewCapture(@"C:\Users\Administrator\Desktop\ffmpeg\a.swf",@"C:\Users\Administrator\Desktop\ffmpeg\a.jpg");
}
}
public class FlashCapture
{
/// <summary>
/// 用户自上传的文件预览
/// </summary>
/// <param name="FlashFilePath">文件路径</param>
public static void FilePreviewCapture(string FlashFilePath)
{
if (!System.IO.File.Exists(FlashFilePath + ".swf"))
{
System.IO.File.Copy(FlashFilePath, FlashFilePath + ".swf");
}
SWFToImage.SWFToImageObjectClass swf = new SWFToImage.SWFToImageObjectClass();
swf.InitLibrary("demo", "demo");
swf.InputSWFFileName = FlashFilePath;
swf.ImageOutputType = SWFToImage.TImageOutputType.iotJPG;
swf.Execute_Begin();
SWFHeaderInfo s = new SWFHeaderInfo(FlashFilePath);
swf.ImageWidth = (int)s.xMax;
swf.ImageHeight = (int)s.yMax;
Random rnd = new Random();
swf.FrameIndex = rnd.Next(swf.FramesCount);
swf.Execute_GetImage();
swf.SaveToFile(FlashFilePath + ".jpg");
swf.Execute_End();
if (System.IO.File.Exists(FlashFilePath + ".swf"))
{
System.IO.File.Delete(FlashFilePath + ".swf");
}
}
/// <summary>
/// 自主更新的FLASH的截图部分
/// </summary>
/// <param name="FlashFilePath">FLASH文件路径</param>
/// <param name="FileBaseName">预览图路径</param>
public static void FilePreviewCapture(string FlashFilePath, string PicFilePath)
{
if (System.IO.File.Exists(FlashFilePath))
{
SWFToImage.SWFToImageObjectClass swf = new SWFToImage.SWFToImageObjectClass();
swf.InitLibrary("demo", "demo");
swf.InputSWFFileName = FlashFilePath;
swf.ImageOutputType = SWFToImage.TImageOutputType.iotJPG;
swf.Execute_Begin();
SWFHeaderInfo s = new SWFHeaderInfo(FlashFilePath);
swf.ImageWidth = (int)s.xMax;
swf.ImageHeight = (int)s.yMax;
Random rnd = new Random();
swf.FrameIndex = rnd.Next(swf.FramesCount);
swf.Execute_GetImage();
swf.SaveToFile(PicFilePath);
swf.Execute_End();
}
}
}
}
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace FlashToImage
{
class Program
{
static void Main(string[] args)
{
FlashCapture.FilePreviewCapture(@"C:\Users\Administrator\Desktop\ffmpeg\a.swf",@"C:\Users\Administrator\Desktop\ffmpeg\a.jpg");
}
}
public class FlashCapture
{
/// <summary>
/// 用户自上传的文件预览
/// </summary>
/// <param name="FlashFilePath">文件路径</param>
public static void FilePreviewCapture(string FlashFilePath)
{
if (!System.IO.File.Exists(FlashFilePath + ".swf"))
{
System.IO.File.Copy(FlashFilePath, FlashFilePath + ".swf");
}
SWFToImage.SWFToImageObjectClass swf = new SWFToImage.SWFToImageObjectClass();
swf.InitLibrary("demo", "demo");
swf.InputSWFFileName = FlashFilePath;
swf.ImageOutputType = SWFToImage.TImageOutputType.iotJPG;
swf.Execute_Begin();
SWFHeaderInfo s = new SWFHeaderInfo(FlashFilePath);
swf.ImageWidth = (int)s.xMax;
swf.ImageHeight = (int)s.yMax;
Random rnd = new Random();
swf.FrameIndex = rnd.Next(swf.FramesCount);
swf.Execute_GetImage();
swf.SaveToFile(FlashFilePath + ".jpg");
swf.Execute_End();
if (System.IO.File.Exists(FlashFilePath + ".swf"))
{
System.IO.File.Delete(FlashFilePath + ".swf");
}
}
/// <summary>
/// 自主更新的FLASH的截图部分
/// </summary>
/// <param name="FlashFilePath">FLASH文件路径</param>
/// <param name="FileBaseName">预览图路径</param>
public static void FilePreviewCapture(string FlashFilePath, string PicFilePath)
{
if (System.IO.File.Exists(FlashFilePath))
{
SWFToImage.SWFToImageObjectClass swf = new SWFToImage.SWFToImageObjectClass();
swf.InitLibrary("demo", "demo");
swf.InputSWFFileName = FlashFilePath;
swf.ImageOutputType = SWFToImage.TImageOutputType.iotJPG;
swf.Execute_Begin();
SWFHeaderInfo s = new SWFHeaderInfo(FlashFilePath);
swf.ImageWidth = (int)s.xMax;
swf.ImageHeight = (int)s.yMax;
Random rnd = new Random();
swf.FrameIndex = rnd.Next(swf.FramesCount);
swf.Execute_GetImage();
swf.SaveToFile(PicFilePath);
swf.Execute_End();
}
}
}
}
使用问题请参看：
https://bytescout.com/support/index.php?_m=knowledgebase&_a=view&parentcategoryid=9&nav=0
常见的问题
1 在asp.net下使用：regsvr32 ***/swftoimage.dll
2 visit,win7下：安装flash activex控件for ie
3 没有注册类：http://www.adobe.com/go/EN_US-H-GET-FLASH，（跟2一样，不过貌似不好用）
