vlc/include/vout_synchro.h
Rémi Denis-Courmont 473fef1b4d More UTF8ication
2006-02-01 19:20:17 +00:00

99 lines
4.3 KiB
C

/*****************************************************************************
* vout_synchro.h: frame-dropping structures
* Only used in libmpeg2 decoder at the moment
*****************************************************************************
* Copyright (C) 1999-2005 the VideoLAN team
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
* Jean-Marc Dressler <polux@via.ecp.fr>
* Stéphane Borel <stef@via.ecp.fr>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* vout_synchro_t : timers for the video synchro
*****************************************************************************/
#define MAX_PIC_AVERAGE 8
/* Read the discussion on top of vout_synchro.c for more information. */
struct vout_synchro_t
{
VLC_COMMON_MEMBERS
vout_thread_t * p_vout;
int i_frame_rate;
int i_current_rate;
vlc_bool_t b_no_skip;
vlc_bool_t b_quiet;
/* date of the beginning of the decoding of the current picture */
mtime_t decoding_start;
/* stream properties */
unsigned int i_n_p, i_n_b;
/* decoding values */
mtime_t p_tau[4]; /* average decoding durations */
unsigned int pi_meaningful[4]; /* number of durations read */
/* render_time filled by SynchroChoose() */
int i_render_time;
/* stream context */
int i_nb_ref; /* Number of reference pictures */
int i_dec_nb_ref; /* Number of reference pictures we'll *
* have if we decode the current pic */
int i_trash_nb_ref; /* Number of reference pictures we'll *
* have if we trash the current pic */
unsigned int i_eta_p, i_eta_b;
mtime_t backward_pts, current_pts;
int i_current_period; /* period to add to the next picture */
int i_backward_period; /* period to add after the next
* reference picture
* (backward_period * period / 2) */
/* statistics */
unsigned int i_trashed_pic, i_not_chosen_pic, i_pic;
};
/* Pictures types */
#define I_CODING_TYPE 1
#define P_CODING_TYPE 2
#define B_CODING_TYPE 3
#define D_CODING_TYPE 4 /* MPEG-1 ONLY */
/* other values are reserved */
/* Structures */
#define TOP_FIELD 1
#define BOTTOM_FIELD 2
#define FRAME_STRUCTURE 3
/*****************************************************************************
* Prototypes
*****************************************************************************/
#define vout_SynchroInit(a,b) __vout_SynchroInit(VLC_OBJECT(a),b)
VLC_EXPORT( vout_synchro_t *, __vout_SynchroInit, ( vlc_object_t *, int ) );
VLC_EXPORT( void, vout_SynchroRelease, ( vout_synchro_t * ) );
VLC_EXPORT( void, vout_SynchroReset, ( vout_synchro_t * ) );
VLC_EXPORT( vlc_bool_t, vout_SynchroChoose, ( vout_synchro_t *, int, int, vlc_bool_t ) );
VLC_EXPORT( void, vout_SynchroTrash, ( vout_synchro_t * ) );
VLC_EXPORT( void, vout_SynchroDecode, ( vout_synchro_t * ) );
VLC_EXPORT( void, vout_SynchroEnd, ( vout_synchro_t *, int, vlc_bool_t ) );
VLC_EXPORT( mtime_t, vout_SynchroDate, ( vout_synchro_t * ) );
VLC_EXPORT( void, vout_SynchroNewPicture, ( vout_synchro_t *, int, int, mtime_t, mtime_t, int, vlc_bool_t ) );