public static IFrameStream OpenFile(string fileName, out AdvFileMetadataInfo fileMetadataInfo, out GeoLocationInfo geoLocation)
{
fileMetadataInfo = new AdvFileMetadataInfo();
geoLocation = new GeoLocationInfo();
try
{
int version = TangraCore.ADV2GetFormatVersion(fileName);
IFrameStream rv;
if (version == 1)
{
var adv1 = new AstroDigitalVideoStream(fileName, ref fileMetadataInfo, ref geoLocation);
if (adv1.IsStatusChannelOnly)
{
TangraContext.Current.CustomRenderer = new AavStatusChannelOnlyRenderer(adv1);
return(null);
}
rv = adv1;
}
else
{
rv = AstroDigitalVideoStreamV2.OpenFile(fileName, out fileMetadataInfo, out geoLocation);
}
TangraContext.Current.RenderingEngine = fileMetadataInfo.Engine == "AAV" ? "AstroAnalogueVideo" : "AstroDigitalVideo";
if (fileMetadataInfo.Engine == "AAV")
{
UsageStats.Instance.ProcessedAavFiles++;
}
else
{
UsageStats.Instance.ProcessedAdvFiles++;
}
UsageStats.Instance.Save();
return(rv);
}
catch (ADVFormatException ex)
{
MessageBox.Show(ex.Message, "Error opening ADV/AAV file", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(null);
}
public void StepBackward(int secondsBackward)
{
if (m_VideoStream != null)
{
if (m_IsRunning)
{
// No single frame movement or refresh when the video is 'playing'
return;
}
AstroDigitalVideoStream advStream = m_VideoStream as AstroDigitalVideoStream;
if (advStream != null)
{
AdvFrameInfo currStatusChannel = advStream.GetStatusChannel(CurrentDirectionAwareFrameIndex);
if (currStatusChannel.HasTimeStamp)
{
int targetFrame = m_CurrentFrameIndex - 1;
while (targetFrame >= m_VideoStream.FirstFrame)
{
AdvFrameInfo statusChannel = advStream.GetStatusChannel(targetFrame);
if (statusChannel.HasTimeStamp)
{
TimeSpan ts =
new TimeSpan(currStatusChannel.MiddleExposureTimeStamp.Ticks - statusChannel.MiddleExposureTimeStamp.Ticks);
if (ts.TotalSeconds >= secondsBackward)
{
m_CurrentFrameIndex = targetFrame;
break;
}
}
else if (targetFrame == m_VideoStream.FirstFrame)
{
// We have reached the beginning of the video
m_CurrentFrameIndex = targetFrame;
break;
}
targetFrame--;
}
}
else if (advStream.FrameRate > 0)
{
m_CurrentFrameIndex -= (int)Math.Round(secondsBackward * advStream.FrameRate);
}
else
{
m_CurrentFrameIndex--;
}
}
else
{
m_CurrentFrameIndex -= (int)Math.Round(secondsBackward * m_VideoStream.FrameRate);
}
if (m_CurrentFrameIndex < m_VideoStream.FirstFrame)
{
m_CurrentFrameIndex = m_VideoStream.FirstFrame;
}
DisplayCurrentFrame(MovementType.Jump);
}
}
public static IFrameStream OpenFile(string fileName, out AdvFileMetadataInfo fileMetadataInfo, out GeoLocationInfo geoLocation)
{
fileMetadataInfo = new AdvFileMetadataInfo();
geoLocation = new GeoLocationInfo();
try
{
int version = TangraCore.ADV2GetFormatVersion(fileName);
IFrameStream rv;
if (version == 1)
rv = new AstroDigitalVideoStream(fileName, ref fileMetadataInfo, ref geoLocation);
else
rv = AstroDigitalVideoStreamV2.OpenFile(fileName, out fileMetadataInfo, out geoLocation);
TangraContext.Current.RenderingEngine = fileMetadataInfo.Engine == "AAV" ? "AstroAnalogueVideo" : "AstroDigitalVideo";
if (fileMetadataInfo.Engine == "AAV")
UsageStats.Instance.ProcessedAavFiles++;
else
UsageStats.Instance.ProcessedAdvFiles++;
UsageStats.Instance.Save();
return rv;
}
catch(ADVFormatException ex)
{
MessageBox.Show(ex.Message, "Error opening ADV/AAV file", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return null;
}
