Sources/Classes/Toolkits/Model/Core/Video/Facade/ImageBuffer/CVGLImageBuffer.m
//--------------------------------------------------------------------------- |
// |
// File: CVGLImagebuffer.h |
// |
// Abstract: A facade for managing Core Video image buffer references |
// with OpenGL PBO, FBO, texture range, or texture 2D backing |
// stores. |
// |
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// |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#import "CVGLProtocol.h" |
#import "CVGLFramebuffer.h" |
#import "CVGLPixelbuffer.h" |
#import "CVGLTexture2D.h" |
#import "CVGLImagebuffer.h" |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Private - Data Structures |
//--------------------------------------------------------------------------- |
struct CVGLImagebufferData |
{ |
GLuint width; |
GLuint height; |
GLenum target; |
GLenum format; |
id<CVGLProtocol> buffer; |
}; |
typedef struct CVGLImagebufferData CVGLImagebufferData; |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
//--------------------------------------------------------------------------- |
@implementation CVGLImagebuffer |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Designated Initializers |
//--------------------------------------------------------------------------- |
- (id) initImagebufferWithSize:(const NSSize *)theSize |
{ |
self = [super init]; |
if( self ) |
{ |
mpImagebuffer = (CVGLImagebufferDataRef)calloc(1, sizeof(CVGLImagebufferData)); |
if( mpImagebuffer != NULL ) |
{ |
mpImagebuffer->buffer = [[CVGLFramebuffer alloc] initFramebufferWithSize:theSize]; |
if( !mpImagebuffer->buffer ) |
{ |
NSLog( @">> ERROR: CoreVideo Imagebuffer - Failed instantiating a FBO bound backing store!" ); |
} // if |
else |
{ |
mpImagebuffer->target = [mpImagebuffer->buffer target]; |
mpImagebuffer->format = [mpImagebuffer->buffer format]; |
mpImagebuffer->width = [mpImagebuffer->buffer width]; |
mpImagebuffer->height = [mpImagebuffer->buffer height]; |
} // else |
} // if |
} // if |
return self; |
} // initImagebufferWithSize |
//--------------------------------------------------------------------------- |
- (id) initImagebufferWithSize:(const NSSize *)theSize |
target:(const GLenum)theTarget |
format:(const GLenum)theFormat |
{ |
self = [super init]; |
if( self ) |
{ |
mpImagebuffer = (CVGLImagebufferDataRef)calloc(1, sizeof(CVGLImagebufferData)); |
if( mpImagebuffer != NULL ) |
{ |
mpImagebuffer->target = theTarget; |
mpImagebuffer->format = theFormat; |
mpImagebuffer->buffer = [[CVGLTexture2D alloc] initTexture2DWithSize:theSize |
target:theTarget |
format:theFormat]; |
if( !mpImagebuffer->buffer ) |
{ |
NSLog( @">> ERROR: CoreVideo Imagebuffer - Failed instantiating a texture 2D/rectangle backing store!" ); |
} // if |
else |
{ |
mpImagebuffer->width = [mpImagebuffer->buffer width]; |
mpImagebuffer->height = [mpImagebuffer->buffer height]; |
} // else |
} // if |
} // if |
return self; |
} // initImagebufferWithSize |
//--------------------------------------------------------------------------- |
- (id) initImagebufferWithSize:(const NSSize *)theSize |
target:(const GLenum)theTarget |
format:(const GLenum)theFormat |
hint:(const GLenum)theHint |
{ |
self = [super init]; |
if( self ) |
{ |
mpImagebuffer = (CVGLImagebufferDataRef)calloc(1, sizeof(CVGLImagebufferData)); |
if( mpImagebuffer != NULL ) |
{ |
mpImagebuffer->target = theTarget; |
mpImagebuffer->format = theFormat; |
mpImagebuffer->buffer = [[CVGLTexture2D alloc] initTexture2DWithSize:theSize |
target:theTarget |
format:theFormat |
hint:theHint]; |
if( !mpImagebuffer->buffer ) |
{ |
NSLog( @">> ERROR: CoreVideo Imagebuffer - Failed instantiating a texture 2D backing store with hint!" ); |
} // if |
else |
{ |
mpImagebuffer->width = [mpImagebuffer->buffer width]; |
mpImagebuffer->height = [mpImagebuffer->buffer height]; |
} // else |
} // if |
} // if |
return self; |
} // initTexture2DWithSize |
//--------------------------------------------------------------------------- |
- (id) initImagebufferWithSize:(const NSSize *)theSize |
target:(const GLenum)theTarget |
format:(const GLenum)theFormat |
hint:(const GLenum)theHint |
mipmaps:(const BOOL)hasMipmaps |
{ |
self = [super init]; |
if( self ) |
{ |
mpImagebuffer = (CVGLImagebufferDataRef)calloc(1, sizeof(CVGLImagebufferData)); |
if( mpImagebuffer != NULL ) |
{ |
mpImagebuffer->target = theTarget; |
mpImagebuffer->format = theFormat; |
mpImagebuffer->buffer = [[CVGLTexture2D alloc] initTexture2DWithSize:theSize |
target:theTarget |
format:theFormat |
hint:theHint |
mipmaps:hasMipmaps]; |
if( !mpImagebuffer->buffer ) |
{ |
NSLog( @">> ERROR: CoreVideo Imagebuffer - Failed instantiating a texture 2D backing store with hint and mipmaps!" ); |
} // if |
else |
{ |
mpImagebuffer->width = [mpImagebuffer->buffer width]; |
mpImagebuffer->height = [mpImagebuffer->buffer height]; |
} // else |
} // if |
} // if |
return self; |
} // initTexture2DWithSize |
//--------------------------------------------------------------------------- |
- (id) initImagebufferWithSize:(const NSSize *)theSize |
usage:(const GLenum)theUsage |
target:(const GLenum)theTarget |
format:(const GLenum)theFormat |
{ |
self = [super init]; |
if( self ) |
{ |
mpImagebuffer = (CVGLImagebufferDataRef)calloc(1, sizeof(CVGLImagebufferData)); |
if( mpImagebuffer != NULL ) |
{ |
mpImagebuffer->target = theTarget; |
mpImagebuffer->format = theFormat; |
mpImagebuffer->buffer = [[CVGLPixelbuffer alloc] initTexture2DAuthorWithSize:theSize |
usage:theUsage |
target:theTarget |
format:theFormat]; |
if( !mpImagebuffer->buffer ) |
{ |
NSLog( @">> ERROR: CoreVideo Imagebuffer - Failure instantiating a PBO bound backing store!" ); |
} // if |
else |
{ |
mpImagebuffer->width = [mpImagebuffer->buffer width]; |
mpImagebuffer->height = [mpImagebuffer->buffer height]; |
} // else |
} //if |
} // if |
return self; |
} // initImagebufferWithSize |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Destructor |
//--------------------------------------------------------------------------- |
- (void) dealloc |
{ |
if( mpImagebuffer != NULL ) |
{ |
if( mpImagebuffer->buffer ) |
{ |
[mpImagebuffer->buffer release]; |
mpImagebuffer->buffer = nil; |
} // if |
free(mpImagebuffer); |
mpImagebuffer = NULL; |
} // if |
[super dealloc]; |
} // dealloc |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Accessors |
//--------------------------------------------------------------------------- |
- (GLenum) target |
{ |
return( mpImagebuffer->target ); |
} // target |
//--------------------------------------------------------------------------- |
- (GLenum) format |
{ |
return( mpImagebuffer->format ); |
} // format |
//--------------------------------------------------------------------------- |
- (GLuint) width |
{ |
return( mpImagebuffer->width ); |
} // width |
//--------------------------------------------------------------------------- |
- (GLuint) height |
{ |
return( mpImagebuffer->height ); |
} // height |
//--------------------------------------------------------------------------- |
- (BOOL) setSize:(const NSSize *)theSize |
{ |
return( [mpImagebuffer->buffer setSize:theSize] ); |
} // setSize |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
#pragma mark - |
#pragma mark Public - Utilities |
//--------------------------------------------------------------------------- |
- (void) bind |
{ |
[mpImagebuffer->buffer bind]; |
} // bind |
//--------------------------------------------------------------------------- |
- (void) unbind |
{ |
[mpImagebuffer->buffer unbind]; |
} // unbind |
//--------------------------------------------------------------------------- |
- (void) update:(CVImageBufferRef)theImageBuffer; |
{ |
[mpImagebuffer->buffer update:theImageBuffer]; |
} // update |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
@end |
//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
Copyright © 2011 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2011-06-27