Files
FreeJ/xcode/CVLayer.mm
xant 5fe8e2ea64 Refactoring filter implementation on osx
- moving filter-related code out of the layercontroller
  by creating a Filter subclass : CVFilter
- making coreimage filters available to javascript when running on osx

Note : this is a work in progress and implementation is still unfinished
       (coreimage filters won't work in this revision)
2010-06-14 22:04:40 +02:00

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/* FreeJ
* (c) Copyright 2009 Andrea Guzzo <xant@dyne.org>
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Public License as published
* by the Free Software Foundation; either version 3 of the License,
* or (at your option) any later version.
*
* This source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <CVLayer.h>
CVLayer::CVLayer() : CVCocoaLayer(this), Layer()
{
type = Layer::GL_COCOA;
buffer = NULL;
}
CVLayer::CVLayer(CVLayerController *vin) : Layer(), CVCocoaLayer(this, vin)
{
type = Layer::GL_COCOA;
buffer = NULL;
set_name([input name]);
[input setLayer:this];
}
CVLayer::~CVLayer()
{
stop();
close();
}
bool
CVLayer::open(const char *path)
{
// must be overridden if providing open() to upper layers
return false;
}
bool
CVLayer::_init()
{
return start();
}
void
CVLayer::close()
{
//[input release];
}
bool
CVLayer::forward()
{
if ([input respondsToSelector:@selector(stepForward)])
[(id)input stepForward];
return true;
}
bool
CVLayer::backward()
{
if ([input respondsToSelector:@selector(stepForward)])
[(id)input stepBackward];
return true;
}
bool
CVLayer::backward_one_keyframe()
{
return backward();
}
bool
CVLayer::set_mark_in()
{
return false;
}
bool
CVLayer::set_mark_out()
{
return false;
}
void
CVLayer::pause()
{
if ([input respondsToSelector:@selector(pause)])
[(id)input pause];
}
bool
CVLayer::relative_seek(double increment)
{
return false;
}
void *
CVLayer::feed()
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
lock();
//if ([input isVisible] || [input needPreview])
[input renderFrame];
CVTexture *texture = [input getTexture];
if (pixelBuffer)
CVPixelBufferRelease(pixelBuffer);
pixelBuffer = CVPixelBufferRetain([texture pixelBuffer]);
CVPixelBufferLockBaseAddress(pixelBuffer, 0);
void *buf = CVPixelBufferGetBaseAddress(pixelBuffer);
CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
unlock();
[pool release];
return buf;
}
void *CVLayer::do_filters(void *buf) {
int cnt = 0;
bool no_opt = false;
if( filters.len() ) {
FilterInstance *filt;
filters.lock();
filt = (FilterInstance *)filters.begin();
while(filt) {
if(filt->active)
[input filterFrame:filt];
filt = (FilterInstance *)filt->next;
}
filters.unlock();
}
return buf;
}