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https://github.com/dyne/FreeJ.git
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f05ea9df4d
refactoring the feedFrame/renderFrame/getTexture flow to make a more clever use of memory and autorelease pools started implementing CVFilter (on the way of having CoreImage filters usable from javascript)
127 lines
2.5 KiB
Plaintext
127 lines
2.5 KiB
Plaintext
/* FreeJ
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* (c) Copyright 2009 Andrea Guzzo <xant@dyne.org>
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*
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* This source code is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Public License as published
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* by the Free Software Foundation; either version 3 of the License,
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* or (at your option) any later version.
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*
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* This source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* Please refer to the GNU Public License for more details.
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*
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* You should have received a copy of the GNU Public License along with
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* this source code; if not, write to:
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* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <CVLayer.h>
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CVLayer::CVLayer() : CVCocoaLayer(this), Layer()
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{
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type = Layer::GL_COCOA;
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buffer = NULL;
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}
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CVLayer::CVLayer(CVLayerController *vin) : Layer(), CVCocoaLayer(this, vin)
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{
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type = Layer::GL_COCOA;
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buffer = NULL;
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set_name([input name]);
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[input setLayer:this];
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}
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CVLayer::~CVLayer()
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{
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stop();
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close();
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}
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bool
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CVLayer::open(const char *path)
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{
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// must be overridden if providing open() to upper layers
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return false;
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}
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bool
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CVLayer::_init()
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{
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return start();
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}
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void
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CVLayer::close()
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{
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//[input release];
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}
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bool
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CVLayer::forward()
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{
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if ([input respondsToSelector:@selector(stepForward)])
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[(id)input stepForward];
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return true;
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}
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bool
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CVLayer::backward()
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{
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if ([input respondsToSelector:@selector(stepForward)])
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[(id)input stepBackward];
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return true;
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}
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bool
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CVLayer::backward_one_keyframe()
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{
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return backward();
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}
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bool
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CVLayer::set_mark_in()
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{
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return false;
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}
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bool
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CVLayer::set_mark_out()
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{
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return false;
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}
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void
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CVLayer::pause()
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{
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if ([input respondsToSelector:@selector(pause)])
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[(id)input pause];
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}
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bool
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CVLayer::relative_seek(double increment)
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{
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return false;
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}
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void *
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CVLayer::feed()
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{
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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lock();
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//if ([input isVisible] || [input needPreview])
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[input renderFrame];
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CVTexture *texture = [input getTexture];
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if (pixelBuffer)
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CVPixelBufferRelease(pixelBuffer);
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pixelBuffer = CVPixelBufferRetain([texture pixelBuffer]);
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CVPixelBufferLockBaseAddress(pixelBuffer, 0);
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void *buf = CVPixelBufferGetBaseAddress(pixelBuffer);
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CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
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unlock();
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[pool release];
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return buf;
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}
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