unsafe int FrameAcceptedCallback(S2Frame *frm)
{
if (frm->Error != 0 || frm->Width == 0 || frm->Height == 0)
{
return(0);
}
if (FrameAccepted == null)
{
SnvBackend.FreeFrame(frm);
return(0);
}
AppTools.TryInvoke(() =>
{
bool changed = false;
if (bitmap == null || bitmap.Width != frm->Width || bitmap.Height != frm->Height)
{
bitmap = new WriteableBitmap(frm->Width, frm->Height, 96, 96, PixelFormats.Bgr24, null);
changed = true;
}
unsafe
{
bitmap.Lock();
UnmanagedTools.CopyMemory(bitmap.BackBuffer, frm->Pixels, (uint)(frm->Height * bitmap.BackBufferStride));
bitmap.AddDirtyRect(new Int32Rect(0, 0, frm->Width, frm->Height));
bitmap.Unlock();
SnvBackend.FreeFrame(frm);
}
FrameAccepted?.Invoke(this, new FrameAcceptedEventArgs(bitmap, changed));
});
return(0);
}
void RecorderThread()
{
Dictionary <int, IntPtr> contexts = new Dictionary <int, IntPtr>();
while (running && IsApplicationRunning)
{
unsafe
{
try
{
var displays = SnvBackend.ScrCountDisplays();
if (displays < 0)
{
throw new Exception("Cannot count the displays available");
}
for (int i = 0; i < displays; i++)
{
var ptr = Marshal.AllocHGlobal(sizeof(RecorderContext));
UnmanagedTools.SetMemory(ptr, 0, sizeof(RecorderContext));
contexts.Add(i, ptr);
}
while (running && IsApplicationRunning)
{
foreach (var k in contexts.Keys)
{
S2Frame frmRaw;
if (SnvBackend.ScrCapture(&frmRaw, k, 1) != 0)
{
break;
}
SnvBackend.RecCommitFrame((RecorderContext *)contexts[k], &frmRaw, k);
SnvBackend.FreeFrame(&frmRaw);
}
Thread.Sleep(25);
}
}
catch { }
try
{
SnvBackend.RecStop();
foreach (var k in contexts.Keys)
{
SnvBackend.RecCommitFrame((RecorderContext *)contexts[k], null, k);
Marshal.FreeHGlobal(contexts[k]);
}
contexts.Clear();
}
catch { }
}
Thread.Sleep(250);
}
}