github-starred/CocoaSplit
2
0
Fork 0
mirror of https://github.com/zakk4223/CocoaSplit.git synced 2026-05-21 06:46:14 -06:00
Code Issues 32 Projects Packages Wiki Activity Actions

Restored decklink self cropping, since it was needed due to weird sampling distortion in the final render

Browse source
This commit is contained in:
Zakk 2017-02-19 22:30:20 -05:00
parent 5978c7f85e
commit 6826eab507
3 changed files with 49 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

47
CapturePlugins/CSDeckLinkCapturePlugin/CSDeckLinkCapturePlugin/CSDeckLinkLayer.mm
View file

@ -17,6 +17,7 @@
{
self.asynchronous = NO;
self.needsDisplayOnBoundsChange = YES;
_deckLinkOGL = CreateOpenGLScreenPreviewHelper();
_deckLinkOGL->AddRef();
}
@ -46,6 +47,17 @@
-(void)setContentsRect:(CGRect)contentsRect
{
_privateCropRect = contentsRect;
[self setNeedsDisplay];
}
-(CGRect)contentsRect
{
return _privateCropRect;
}
-(void)setRenderFrame:(IDeckLinkVideoFrame *)frame
@ -66,34 +78,57 @@
glClear(GL_COLOR_BUFFER_BIT);
NSSize useSize = self.bounds.size;
CGRect newCrop;
newCrop.origin.x = _deckLinkFrameSize.width * _privateCropRect.origin.x;
newCrop.origin.y = _deckLinkFrameSize.height * _privateCropRect.origin.y;
newCrop.size.width = _deckLinkFrameSize.width * _privateCropRect.size.width;
newCrop.size.height = _deckLinkFrameSize.height * _privateCropRect.size.height;
if ([self.contentsGravity isEqualToString:kCAGravityResizeAspect])
{
float wr = newCrop.size.width / self.bounds.size.width;
float hr = newCrop.size.height / self.bounds.size.height;
float ratio = (hr < wr ? wr : hr);
useSize = NSMakeSize(newCrop.size.width / ratio, newCrop.size.height / ratio);
}
GLint vpx = (self.bounds.size.width - useSize.width)/2;
GLint vpy = (self.bounds.size.height - useSize.height)/2;
glViewport(vpx, vpy, useSize.width, useSize.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
NSRect cropRect;
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
GLfloat yt = 1.0 - (_privateCropRect.origin.y + _privateCropRect.size.height);
glScalef(_privateCropRect.size.width, _privateCropRect.size.height, 1);
glTranslatef(_privateCropRect.origin.x * _deckLinkFrameSize.width, yt * _deckLinkFrameSize.height, 0);
if (_deckLinkOGL)
{
_deckLinkOGL->PaintGL();
}
[super drawInCGLContext:ctx pixelFormat:pf forLayerTime:t displayTime:ts];