videolan/vlc
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vlc/include/video_fifo.h
Sam Hocevar c2e97975f7 . disparition de la plupart des printf 
. moins de warnings dans la YUV MMX
2000-06-14 20:53:48 +00:00

249 lines
8.6 KiB
C
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/*****************************************************************************
* video_fifo.h : FIFO for the pool of video_decoders
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
*
* Authors:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Requires:
* "config.h"
* "common.h"
* "threads.h"
* "video_parser.h"
* "undec_picture.h"
*****************************************************************************/
/*****************************************************************************
* Macros
*****************************************************************************/
#ifdef VDEC_SMP
/* FIXME: move to inline functions ??*/
#define VIDEO_FIFO_ISEMPTY( fifo ) ( (fifo).i_start == (fifo).i_end )
#define VIDEO_FIFO_ISFULL( fifo ) ( ( ( (fifo).i_end + 1 - (fifo).i_start )\
& VFIFO_SIZE ) == 0 )
#define VIDEO_FIFO_START( fifo ) ( (fifo).buffer[ (fifo).i_start ] )
#define VIDEO_FIFO_INCSTART( fifo ) ( (fifo).i_start = ((fifo).i_start + 1) \
& VFIFO_SIZE )
#define VIDEO_FIFO_END( fifo ) ( (fifo).buffer[ (fifo).i_end ] )
#define VIDEO_FIFO_INCEND( fifo ) ( (fifo).i_end = ((fifo).i_end + 1) \
& VFIFO_SIZE )
#endif
/*****************************************************************************
* vpar_GetMacroblock : return a macroblock to be decoded
*****************************************************************************/
static __inline__ macroblock_t * vpar_GetMacroblock( video_fifo_t * p_fifo )
{
#ifdef VDEC_SMP
macroblock_t * p_mb;
vlc_mutex_lock( &p_fifo->lock );
while( VIDEO_FIFO_ISEMPTY( *p_fifo ) )
{
vlc_cond_wait( &p_fifo->wait, &p_fifo->lock );
if( p_fifo->p_vpar->b_die )
{
vlc_mutex_unlock( &p_fifo->lock );
return( NULL );
}
}
p_mb = VIDEO_FIFO_START( *p_fifo );
VIDEO_FIFO_INCSTART( *p_fifo );
vlc_mutex_unlock( &p_fifo->lock );
return( p_mb );
#else
/* Shouldn't normally be used without SMP. */
return NULL;
#endif
}
/*****************************************************************************
* vpar_NewMacroblock : return a buffer for the parser
*****************************************************************************/
static __inline__ macroblock_t * vpar_NewMacroblock( video_fifo_t * p_fifo )
{
#ifdef VDEC_SMP
macroblock_t * p_mb;
#define P_buffer p_fifo->p_vpar->vbuffer
vlc_mutex_lock( &P_buffer.lock );
while( P_buffer.i_index == -1 )
{
/* No more structures available. This should not happen ! */
intf_DbgMsg("vpar debug: macroblock list is empty, delaying\n");
vlc_mutex_unlock( &P_buffer.lock );
if( p_fifo->p_vpar->b_die )
{
return( NULL );
}
msleep(VPAR_OUTMEM_SLEEP);
vlc_mutex_lock( &P_buffer.lock );
}
p_mb = P_buffer.pp_mb_free[ P_buffer.i_index-- ];
vlc_mutex_unlock( &P_buffer.lock );
#undef P_buffer
return( p_mb );
#else
return( &p_fifo->buffer );
#endif
}
/*****************************************************************************
* vpar_DecodeMacroblock : put a macroblock in the video fifo
*****************************************************************************/
static __inline__ void vpar_DecodeMacroblock( video_fifo_t * p_fifo,
macroblock_t * p_mb )
{
#ifdef VDEC_SMP
/* Place picture in the video FIFO */
vlc_mutex_lock( &p_fifo->lock );
/* By construction, the video FIFO cannot be full */
VIDEO_FIFO_END( *p_fifo ) = p_mb;
VIDEO_FIFO_INCEND( *p_fifo );
vlc_mutex_unlock( &p_fifo->lock );
#endif
/* Shouldn't normally be used without SMP. */
}
/*****************************************************************************
* vpar_ReleaseMacroblock : release a macroblock and put the picture in the
* video output heap, if it is finished
*****************************************************************************/
static __inline__ void vpar_ReleaseMacroblock( video_fifo_t * p_fifo,
macroblock_t * p_mb )
{
#ifdef VDEC_SMP
boolean_t b_finished;
/* Unlink picture buffer */
vlc_mutex_lock( &p_mb->p_picture->lock_deccount );
p_mb->p_picture->i_deccount--;
b_finished = (p_mb->p_picture->i_deccount == 1);
vlc_mutex_unlock( &p_mb->p_picture->lock_deccount );
//intf_DbgMsg( "%d ", p_mb->p_picture->i_deccount );
/* Test if it was the last block of the picture */
if( b_finished )
{
//intf_DbgMsg( "Image decodee\n" );
/* Mark the picture to be displayed */
vout_DisplayPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
/* Warn Synchro for its records. */
vpar_SynchroEnd( p_fifo->p_vpar );
/* Unlink referenced pictures */
if( p_mb->p_forward != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_forward );
}
if( p_mb->p_backward != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_backward );
}
}
/* Release the macroblock_t structure */
#define P_buffer p_fifo->p_vpar->vbuffer
vlc_mutex_lock( &P_buffer.lock );
P_buffer.pp_mb_free[ ++P_buffer.i_index ] = p_mb;
vlc_mutex_unlock( &P_buffer.lock );
#undef P_buffer
#else
p_mb->p_picture->i_deccount--;
if( p_mb->p_picture->i_deccount == 1 )
{
/* Mark the picture to be displayed */
vout_DisplayPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
/* Warn Synchro for its records. */
vpar_SynchroEnd( p_fifo->p_vpar );
}
#endif
}
/*****************************************************************************
* vpar_DestroyMacroblock : destroy a macroblock in case of error
*****************************************************************************/
static __inline__ void vpar_DestroyMacroblock( video_fifo_t * p_fifo,
macroblock_t * p_mb )
{
#ifdef VDEC_SMP
boolean_t b_finished;
/* Unlink picture buffer */
vlc_mutex_lock( &p_mb->p_picture->lock_deccount );
p_mb->p_picture->i_deccount--;
b_finished = (p_mb->p_picture->i_deccount == 1);
vlc_mutex_unlock( &p_mb->p_picture->lock_deccount );
/* Test if it was the last block of the picture */
if( b_finished )
{
intf_DbgMsg( "Image trashee\n" );
/* Mark the picture to be trashed */
vout_DestroyPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
/* Warn Synchro for its records. */
vpar_SynchroEnd( p_fifo->p_vpar );
/* Unlink referenced pictures */
if( p_mb->p_forward != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_forward );
}
if( p_mb->p_backward != NULL )
{
vout_UnlinkPicture( p_fifo->p_vpar->p_vout, p_mb->p_backward );
}
}
/* Release the macroblock_t structure */
#define P_buffer p_fifo->p_vpar->vbuffer
vlc_mutex_lock( &P_buffer.lock );
P_buffer.pp_mb_free[ ++P_buffer.i_index ] = p_mb;
vlc_mutex_unlock( &P_buffer.lock );
#undef P_buffer
#else
p_mb->p_picture->i_deccount--;
if( p_mb->p_picture->i_deccount == 1 )
{
/* Mark the picture to be trashed */
vout_DestroyPicture( p_fifo->p_vpar->p_vout, p_mb->p_picture );
/* Warn Synchro for its records. */
vpar_SynchroEnd( p_fifo->p_vpar );
}
#endif
}
/*****************************************************************************
* Prototypes
*****************************************************************************/
void vpar_InitFIFO( struct vpar_thread_s * p_vpar );
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