/// <summary>
/// Add video stream to VideoStreams object
/// </summary>
/// <param name="am">
/// A <see cref="AviManager"/>
/// </param>
/// <param name="j">
/// A <see cref="System.Int32"/>
/// </param>
private void AddVideoStream(ref AviManager am, int j)
{
double WdH = 0;
AviVideoStreamEntity vStream = new AviVideoStreamEntity();
long totalTime = 0;
vStream.CodecDesc =
byteMan.GetFourccFromInt((uint)am.AviContainer.AviStreams[j].AviStreamHeader.FccHandler);
vStream.FrameSize =
am.AviContainer.AviStreams[j].AviVideoStreamHeader[0].BiWidth +
" x " +
am.AviContainer.AviStreams[j].AviVideoStreamHeader[0].BiHeight;
if (am.AviContainer.AviHeader.DwMicroSecPerFrame > 0)
{
totalTime =(long)((long)am.AviContainer.AviHeader.DwTotalFrames *
(long)am.AviContainer.AviHeader.DwMicroSecPerFrame);
}
vStream.TotalTime = totalTime;
vStream.FrameRate = Convert.ToInt32(1000000.0 / am.AviContainer.AviHeader.DwMicroSecPerFrame);
vStream.TotalFrame = (long)am.AviContainer.AviHeader.DwTotalFrames;
vStream.DataRate = (long)(am.AviContainer.AviStreams[j].AviStreamHeader.DwRate /
am.AviContainer.AviStreams[j].AviStreamHeader.DwScale);
// Calc Video Bitrate
WdH = am.AviContainer.AviStreams[j].AviVideoStreamHeader[0].BiWidth;
WdH /= am.AviContainer.AviStreams[j].AviVideoStreamHeader[0].BiHeight;
int headerSize = am.AviContainer.AviHeader.DwTotalFrames * 8 *
(am.AviContainer.AudioStreams.Count + 1);
long videoSize = (long)(am.AviContainer.MoviSize - headerSize - audioSize);
double AverageVideoBitRate = ((double)(videoSize * vStream.DataRate * 8) /
(am.AviContainer.AviHeader.DwTotalFrames * 1000));
// double videoQuality = (double)((0.75 * WdH) *
// (double)(AverageVideoBitRate / vStream.DataRate));
double videoQuality = (double)((0.75 * WdH * AverageVideoBitRate) / vStream.DataRate);
vStream.CodecName =
byteMan.GetFourccFromInt((uint)am.AviContainer.AviStreams[j].AviVideoStreamHeader[0].BiCompression);
vStream.VideoBitrate = AverageVideoBitRate.ToString("#,##0") + " Kb/Sec";
vStream.PacketBitstream = am.AviContainer.PBitstream;
vStream.Quality = (long)videoQuality;
am.AviContainer.VideoStreams.Add(vStream);
}
/// <summary>
/// Scan file and return info
/// </summary>
/// <param name="filePath">
/// A <see cref="System.String"/> File path to scan
/// </param>
/// <param name="vInfo">
/// A <see cref="Object"/> Output video stream info
/// </param>
/// <param name="aInfo">
/// A <see cref="Object"/> Output audio stream info
/// </param>
public void GetFileInfo(string filePath,
ref object vInfo,
ref object aInfo)
{
int vStreams = 0;
int aStreams = 0;
if (!IsManaged(filePath))
{
throw new Exception("UNMANAGED EXTENSION");
}
// Create instance of Manager class
am = new AviManager(filePath);
// Scan file
am.GetInfo();
// Parse audio streams
for (int j=0; j<am.AviContainer.AviStreams.Count; j++)
{
if (am.AviContainer.AviStreams[j].AviStreamHeader.FccType ==
AviConstants.StreamtypeAUDIO)
{
// Audio Stream
AddAudioStream(ref am, j);
aStreams++;
// Calc stream size and add to total audio size
int blockPerSec = am.AviContainer.AviStreams[j].AviStreamHeader.DwRate /
am.AviContainer.AviStreams[j].AviStreamHeader.DwScale;
double tmpAudio = am.AviContainer.AviStreams[j].AviStreamHeader.DwLength;
tmpAudio *= am.AviContainer.AviStreams[j].AviAudioStreamHeader[0].NAvgBytesPerSec;
tmpAudio /= blockPerSec;
audioSize += tmpAudio;
}
}
// Parse video streams
for (int j=0; j<am.AviContainer.AviStreams.Count; j++)
{
if (am.AviContainer.AviStreams[j].AviStreamHeader.FccType ==
AviConstants.StreamtypeVIDEO)
{
// Video Stream
AddVideoStream(ref am, j);
vStreams ++;
}
}
#region Video List update
((List<string[]>)vInfo).Add(
new string[] {"Codec name:", am.AviContainer.VideoStreams[0].CodecName} );
((List<string[]>)vInfo).Add(
new string[] {"Codec desc:", am.AviContainer.VideoStreams[0].CodecDesc} );
((List<string[]>)vInfo).Add(
new string[] {"Frame size:", am.AviContainer.VideoStreams[0].FrameSize} );
((List<string[]>)vInfo).Add(
new string[] {"Average video bitrate:", am.AviContainer.VideoStreams[0].VideoBitrate} );
((List<string[]>)vInfo).Add(
new string[] {"File size:", ((am.AviContainer.FileSize) / 1024).ToString("#,### KB") } );
long ttime = (long)(am.AviContainer.VideoStreams[0].TotalTime / 1000000.0);
int hours = (int)(ttime / 3600);
ttime -= (long)(hours * 3600);
int mins = (int)(ttime / 60);
ttime -= (long)(mins * 60);
((List<string[]>)vInfo).Add(
new string[] {"Total time:", String.Format("{0:00}:{1:00}:{2:00.00#} seconds", hours, mins, ttime)} );
((List<string[]>)vInfo).Add(
new string[] {"Frame rate:", String.Format("{0:N2} frames/sec", am.AviContainer.VideoStreams[0].FrameRate)} );
((List<string[]>)vInfo).Add(
new string[] {"Total frames:", am.AviContainer.VideoStreams[0].TotalFrame.ToString("#,##0") } );
((List<string[]>)vInfo).Add(
new string[] {"Video data rate:", am.AviContainer.VideoStreams[0].DataRate.ToString() + " frames/sec" } );
((List<string[]>)vInfo).Add(
new string[] {"Video quality:", am.AviContainer.VideoStreams[0].Quality.ToString("#,##0.##")} );
((List<string[]>)vInfo).Add(
new string[] {"Packet Bitstream:", am.AviContainer.VideoStreams[0].PacketBitstream.ToString()} );
// ISFT Data
for(int k=0; k<am.AviContainer.ISFTData.Count; k++)
{
((List<string[]>)vInfo).Add(
new string[] {"ISFT data:", am.AviContainer.ISFTData[0]} );
}
// JUNK Data
for(int k=0; k<am.AviContainer.JunkData.Count; k++)
{
((List<string[]>)vInfo).Add(
new string[] {"JUNK data:", am.AviContainer.JunkData[0]} );
}
// USER Data
for(int k=0; k<am.AviContainer.MoviUserData.Count; k++)
{
((List<string[]>)vInfo).Add(
new string[] {"USER data:", am.AviContainer.MoviUserData[0]} );
}
#endregion Video List update
#region Audio List update
for(int k=0; k<am.AviContainer.AudioStreams.Count; k++)
{
AviAudioStreamEntity ase = am.AviContainer.AudioStreams[k];
string streamDescInfo = "Audio " + (k+1).ToString("d2") + ":";
string streamValueInfo = ase.StreamType + " " +
ase.Bitrate + " - " + ase.Hz.ToString() + " Hz (" +
ase.Channels.ToString() + " Channels)";
((List<string[]>)aInfo).Add(
new string[] {streamDescInfo, streamValueInfo} );
}
#endregion Audio List update
}
/// <summary>
/// Add audio stream to AudioStreams object
/// </summary>
/// <param name="am">
/// A <see cref="AviManager"/>
/// </param>
/// <param name="j">
/// A <see cref="System.Int32"/>
/// </param>
private void AddAudioStream(ref AviManager am, int j)
{
AviAudioStreamEntity aStream = new AviAudioStreamEntity();
string aFormat = am.AviContainer.AviStreams[j].AviAudioStreamHeader[0].WFormatTag.ToString("X4");
double audioRate = (8.0 * am.AviContainer.AviStreams[j].AviAudioStreamHeader[0].NAvgBytesPerSec);
aStream.Bitrate = String.Format("{0:N2} Kb/Sec", audioRate / 1000.0);
aStream.Channels = (int)am.AviContainer.AviStreams[j].AviAudioStreamHeader[0].NChannels;
aStream.Hz = am.AviContainer.AviStreams[j].AviAudioStreamHeader[0].NSamplesPerSec;
aStream.Code = aFormat;
aStream.StreamType = am.GetAudioType(aFormat);
am.AviContainer.AudioStreams.Add(aStream);
}
