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/* $Id: Fifo.c,v 1.17 2004/04/27 19:30:00 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 "Fifo.h"
#if defined( HB_BEOS ) || defined( HB_LINUX )
#include <malloc.h>
#endif
HBBuffer * HBBufferInit( int size )
{
HBBuffer * b;
if( !( b = calloc( sizeof( HBBuffer ), 1 ) ) )
{
HBLog( "HBBuffer: malloc() failed, gonna crash" );
return NULL;
}
b->alloc = size;
b->size = size;
#if defined( HB_BEOS ) || defined( HB_LINUX )
b->data = memalign( 16, size );
#elif defined( HB_MACOSX )
/* OS X's malloc returns 16-bytes aligned memory */
b->data = malloc( size );
#elif defined( HB_CYGWIN )
b->dataOrig = malloc( size + 15 );
b->data = b->dataOrig + 15;
b->data -= (long) b->data & 15;
#endif
b->dataf = (float*) b->data;
if( !b->data )
{
HBLog( "HBBuffer: malloc() failed, gonna crash" );
free( b );
return NULL;
}
return b;
}
void HBBufferReAlloc( HBBuffer * b, int size )
{
/* We don't care about alignment here, realloc is only used in the
AVI muxer anyway */
#if defined( HB_BEOS ) || defined( HB_LINUX ) || defined( HB_MACOSX )
b->data = realloc( b->data, size );
#elif defined( HB_CYGWIN )
int alignment = b->data - b->dataOrig;
b->dataOrig = realloc( b->dataOrig, size + alignment );
b->data = b->dataOrig + alignment;
#endif
b->alloc = size;
if( !b->data )
{
HBLog( "HBBuffer: realloc() failed, gonna crash soon" );
}
}
void HBBufferClose( HBBuffer ** _b )
{
HBBuffer * b = *_b;
#if defined( HB_BEOS ) || defined( HB_LINUX ) || defined( HB_MACOSX )
free( b->data );
#elif defined( HB_CYGWIN )
free( b->dataOrig );
#endif
free( b );
*_b = NULL;
}
HBFifo * HBFifoInit( int capacity )
{
HBFifo * f;
if( !( f = malloc( sizeof( HBFifo ) ) ) )
{
HBLog( "HBFifo: malloc() failed, gonna crash" );
return NULL;
}
f->die = 0;
f->capacity = capacity;
f->whereToPush = 0;
f->whereToPop = 0;
if( !( f->buffers = malloc( ( capacity + 1 ) * sizeof( void* ) ) ) )
{
HBLog( "HBFifo: malloc() failed, gonna crash" );
free( f );
return NULL;
}
f->lock = HBLockInit();
f->cond = HBCondInit();
return f;
}
void HBFifoDie( HBFifo * f )
{
HBLockLock( f->lock );
f->die = 1;
HBCondSignal( f->cond );
HBLockUnlock( f->lock );
}
void HBFifoClose( HBFifo ** _f )
{
HBFifo * f = (*_f);
HBLog( "HBFifo: trashing %d buffer%s",
HBFifoSize( f ), ( HBFifoSize( f ) > 1 ) ? "s" : "" );
while( f->whereToPush != f->whereToPop )
{
HBBufferClose( &(f->buffers[f->whereToPop]) );
f->whereToPop++;
f->whereToPop %= ( f->capacity + 1 );
}
HBLockClose( &f->lock );
HBCondClose( &f->cond );
free( f->buffers );
free( f );
*_f = NULL;
}
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