vout_synchro.h
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上传日期:2009-03-27
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- /*****************************************************************************
- * vout_synchro.h: frame-dropping structures
- *****************************************************************************
- * Copyright (C) 1999-2003 VideoLAN
- * $Id: vout_synchro.h 6961 2004-03-05 17:34:23Z sam $
- *
- * Authors: Christophe Massiot <massiot@via.ecp.fr>
- * Jean-Marc Dressler <polux@via.ecp.fr>
- * St閜hane 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., 59 Temple Place - Suite 330, Boston, MA 02111, 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;
- /* 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_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 ) );