//---------------------------------------------------------------------------

//

//  File: CVGLTexture2D.m

//

//  Abstract: CV utility toolkit for managing texture updates.

//           

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//

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#import "CVGLTexture2D.h"

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

//---------------------------------------------------------------------------

@implementation CVGLTexture2D

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Constructor

//---------------------------------------------------------------------------

//

// Initialize

//

//---------------------------------------------------------------------------

- (id) initTexture2DWithSize:(const NSSize *)theSize

                      target:(const GLenum)theTarget

                      format:(const GLenum)theFormat

{

    self = [super initTexture2DWithSize:theSize

                                 target:theTarget

                                  level:0

                                 format:theFormat

                                 border:NO];

    if( self )

    {

        pixels  = NULL;

        surface = NULL;

    } // if

    else

    {

        NSLog( @">> ERROR: CV Texture 2D - Failed allocating base class for a texture 2D/rectangle backing store!" );

    } // else

    return  self;

} // initTexture2DWithSize

//---------------------------------------------------------------------------

- (id) initTexture2DWithSize:(const NSSize *)theSize

                      target:(const GLenum)theTarget

                      format:(const GLenum)theFormat

                        hint:(const GLenum)theHint

{

    self = [super initTexture2DWithSize:theSize

                                 target:theTarget

                                  level:0

                                 format:theFormat

                                   hint:theHint

                                 border:NO];

    if( self )

    {

        pixels  = NULL;

        surface = NULL;

    } // if

    else

    {

        NSLog( @">> ERROR: CV Texture 2D - Failed allocating base class for a texture 2D range backing store!" );

    } // else

    return  self;

} // initTexture2DWithSize

//---------------------------------------------------------------------------

- (id) initTexture2DWithSize:(const NSSize *)theSize

                      target:(const GLenum)theTarget

                      format:(const GLenum)theFormat

                        hint:(const GLenum)theHint

                     mipmaps:(const BOOL)hasMipmaps

{

    self = [super initTexture2DWithSize:theSize

                                 target:theTarget

                                  level:0

                                 format:theFormat

                                   hint:theHint

                                 border:NO

                                mipmaps:hasMipmaps];

    if( self )

    {

        pixels  = NULL;

        surface = NULL;

    } // if

    else

    {

        NSLog( @">> ERROR: CV Texture 2D - Failed allocating base class for a texture 2D range backing store!" );

    } // else

    return  self;

} // initTexture2DWithSize

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Destructor

//---------------------------------------------------------------------------

- (void) dealloc 

{

    CVPixelBufferRelease( pixels );

    [super dealloc];

} // dealloc

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Utilities - Update - PBOs & Textures

//---------------------------------------------------------------------------

//

// Copy pixels from a CV pixel buffer to a destination pbo buffer and 

// vertical reflect.

//

//---------------------------------------------------------------------------

- (void) update:(CVImageBufferRef)theImageBuffer

{

    CVPixelBufferRelease( pixels );

    CVPixelBufferRetain( theImageBuffer );

    pixels  = theImageBuffer;

    surface = CVPixelBufferGetIOSurface(pixels);

    const GLvoid *pixelsSrc = IOSurfaceGetBaseAddressOfPlane(surface,0);

    [self copy:pixelsSrc 

          doVR:YES];

} // update

//---------------------------------------------------------------------------

@end

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------