/// <summary>
/// demonstrates how to read AVIMAINHEADER of AVI format
/// </summary>
public static void ReadAviMainHeader()
{
//ExStart:ReadAviMainHeader
// initialize AviFormat
using (AviFormat aviFormat = new AviFormat(Common.MapSourceFilePath(filePath)))
{
// get AVI header
AviHeader header = aviFormat.Header;
// display video width
Console.WriteLine("Video width: {0}", header.Width);
// display video height
Console.WriteLine("Video height: {0}", header.Height);
// display total frames
Console.WriteLine("Total frames: {0}", header.TotalFrames);
// display number of streams in file
Console.WriteLine("Number of streams: {0}", header.Streams);
// display suggested buffer size for reading the file
Console.WriteLine("Suggested buffer size: {0}", header.SuggestedBufferSize);
}
//ExEnd:ReadAviMainHeader
}
/// <summary>
/// Clean AVI Format Metadata
/// Feature is supported in version 18.6 or greater of the API
/// </summary>
public static void ReadAviMainHeaderUsingStream()
{
using (Stream stream = File.Open(Common.MapDestinationFilePath(filePath), FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
using (AviFormat format = new AviFormat(Common.MapSourceFilePath(filePath)))
{
// get AVI header
AviHeader header = format.Header;
// display video width
Console.WriteLine("Video width: {0}", header.Width);
// display video height
Console.WriteLine("Video height: {0}", header.Height);
// display total frames
Console.WriteLine("Total frames: {0}", header.TotalFrames);
// display number of streams in file
Console.WriteLine("Number of streams: {0}", header.Streams);
// display suggested buffer size for reading the file
Console.WriteLine("Suggested buffer size: {0}", header.SuggestedBufferSize);
}
// The stream is still open here
}
}
/// <summary>
/// Shows how to read, update and remove XMP metadata in AVI format
/// Feature is supported in version 17.06 or greater
/// </summary>
public static void DealWithXmpMetaData()
{
//ExStart:DealWithXmpMetaData
// initialize AviFormat
using (AviFormat aviFormat = new AviFormat(Common.MapSourceFilePath(filePath)))
{
// get XMP
var xmpMetadata = aviFormat.GetXmpData();
// create XMP if absent
if (xmpMetadata == null)
{
xmpMetadata = new XmpPacketWrapper();
}
// setup properties
xmpMetadata.Schemes.DublinCore.Format = "avi";
xmpMetadata.Schemes.XmpBasic.CreateDate = DateTime.UtcNow;
xmpMetadata.Schemes.XmpBasic.CreatorTool = "GroupDocs.Metadata";
// update xmp
aviFormat.SetXmpData(xmpMetadata);
// and commit changes
aviFormat.Save();
}
//ExEnd:DealWithXmpMetaData
}
public void Test_Avi_1()
{
var fn = @"Targets\Singles\CrimeBlimp.avi";
var file = new FileInfo(fn);
using (var fs = new FileStream(fn, FileMode.Open, FileAccess.ReadWrite))
{
var hdr = new byte[0x2C];
var got = fs.Read(hdr, 0, hdr.Length);
Assert.AreEqual(hdr.Length, got);
AviFormat.Model aviModel = AviFormat.CreateModel(fs, hdr, fs.Name);
AviFormat avi = aviModel.Data;
Assert.IsNotNull(avi);
long fileSize = avi.FileSize;
Assert.AreEqual(Severity.Warning, avi.Issues.MaxSeverity);
Assert.AreEqual(1, avi.Issues.Items.Count);
Assert.AreEqual(1, avi.Issues.RepairableCount);
Assert.IsTrue(avi.Issues.Items[0].IsRepairable);
Assert.AreEqual(5, avi.ExcessSize);
Assert.AreEqual(Likeliness.Probable, avi.Watermark);
string errMess = aviModel.IssueModel.Repair(0);
Assert.IsNull(errMess);
Assert.AreEqual(fileSize - 5, avi.FileSize);
}
}
public static void CleanMetadata()
{
//ExStart:CleanMetadata
// initialize AviFormat
AviFormat aviFormat = new AviFormat(Common.MapSourceFilePath(filePath));
// removes all metadata
aviFormat.CleanMetadata();
// commit changes
aviFormat.Save();
//ExEnd:DealWithXmpMetaData
}
/// <summary>
/// Detects AVI video format via Format Factory
/// </summary>
public static void DetectAviFormat()
{
//ExStart:DetectAviFormat
// recognize format
FormatBase format = FormatFactory.RecognizeFormat(Common.MapSourceFilePath(filePath));
// check format type
if (format.Type == DocumentType.AVI)
{
// cast it to AviFormat
AviFormat aviFormat = format as AviFormat;
// and get it MIME type
string mimeType = aviFormat.MIMEType;
Console.WriteLine(mimeType);
}
//ExEnd:DetectAviFormat
}
