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/* $Id: Scale.c,v 1.14 2004/05/02 16:25:00 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.m0k.org/>.
It may be used under the terms of the GNU General Public License. */
#include "HBInternal.h"
#include "ffmpeg/avcodec.h"
struct HBWork
{
HB_WORK_COMMON_MEMBERS
HBHandle * handle;
HBTitle * title;
HBBuffer * deintBuffer;
ImgReSampleContext * context;
AVPicture rawPicture;
AVPicture deintPicture;
AVPicture scaledPicture;
};
/* Local prototypes */
static int ScaleWork( HBWork * );
HBWork * HBScaleInit( HBHandle * handle, HBTitle * title )
{
HBWork * w;
if( !( w = malloc( sizeof( HBWork ) ) ) )
{
HBLog( "HBScaleInit: malloc() failed, gonna crash" );
return NULL;
}
w->name = strdup( "Scale" );
w->work = ScaleWork;
w->handle = handle;
w->title = title;
/* Allocate a constant buffer used for deinterlacing */
w->deintBuffer = HBBufferInit( 3 * title->inWidth *
title->inHeight / 2 );
avpicture_fill( &w->deintPicture, w->deintBuffer->data,
PIX_FMT_YUV420P, title->inWidth, title->inHeight );
/* Init libavcodec */
w->context =
img_resample_full_init( title->outWidth, title->outHeight,
title->inWidth, title->inHeight,
title->topCrop, title->bottomCrop,
title->leftCrop, title->rightCrop );
return w;
}
void HBScaleClose( HBWork ** _w )
{
HBWork * w = *_w;
img_resample_close( w->context );
HBBufferClose( &w->deintBuffer );
free( w->name );
free( w );
*_w = NULL;
}
static int ScaleWork( HBWork * w )
{
HBTitle * title = w->title;
HBBuffer * rawBuffer;
HBBuffer * scaledBuffer;
HBBuffer * tmpBuffer;
if( HBFifoIsHalfFull( title->scaledFifo ) )
{
return 0;
}
/* Get a new raw picture */
if( !( rawBuffer = HBFifoPop( title->rawFifo ) ) )
{
return 0;
}
/* Allocate new buffer for the scaled picture */
scaledBuffer = HBBufferInit( 3 * title->outWidth *
title->outHeight / 2 );
scaledBuffer->position = rawBuffer->position;
scaledBuffer->pass = rawBuffer->pass;
/* libavcodec stuff */
avpicture_fill( &w->rawPicture, rawBuffer->data, PIX_FMT_YUV420P,
title->inWidth, title->inHeight );
avpicture_fill( &w->scaledPicture, scaledBuffer->data,
PIX_FMT_YUV420P, title->outWidth,
title->outHeight );
/* Do the job */
if( title->deinterlace )
{
avpicture_deinterlace( &w->deintPicture, &w->rawPicture,
PIX_FMT_YUV420P, title->inWidth,
title->inHeight );
img_resample( w->context, &w->scaledPicture,
&w->deintPicture );
}
else
{
img_resample( w->context, &w->scaledPicture, &w->rawPicture );
}
if( rawBuffer->repeat )
{
tmpBuffer = HBBufferInit( scaledBuffer->size );
tmpBuffer->position = scaledBuffer->position;
tmpBuffer->pass = scaledBuffer->pass;
memcpy( tmpBuffer->data, scaledBuffer->data,
scaledBuffer->size );
if( !HBFifoPush( title->scaledFifo, &tmpBuffer ) )
{
HBLog( "HBScale: HBFifoPush failed" );
}
}
if( !HBFifoPush( title->scaledFifo, &scaledBuffer ) )
{
HBLog( "HBScale: HBFifoPush failed" );
}
/* Free memory */
HBBufferClose( &rawBuffer );
return 1;
}
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