1 /*****************************************************************************
2 * vout_synchro.h: frame-dropping structures
3 *****************************************************************************
4 * Copyright (C) 1999-2003 VideoLAN
5 * $Id: vout_synchro.h,v 1.4 2004/01/25 18:17:08 zorglub Exp $
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Jean-Marc Dressler <polux@via.ecp.fr>
9 * Stéphane Borel <stef@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
27 * vout_synchro_t : timers for the video synchro
28 *****************************************************************************/
29 #define MAX_PIC_AVERAGE 8
31 /* Read the discussion on top of vout_synchro.c for more information. */
36 vout_thread_t * p_vout;
40 /* date of the beginning of the decoding of the current picture */
41 mtime_t decoding_start;
43 /* stream properties */
44 unsigned int i_n_p, i_n_b;
47 mtime_t p_tau[4]; /* average decoding durations */
48 unsigned int pi_meaningful[4]; /* number of durations read */
50 /* render_time filled by SynchroChoose() */
54 int i_nb_ref; /* Number of reference pictures */
55 int i_dec_nb_ref; /* Number of reference pictures we'll *
56 * have if we decode the current pic */
57 int i_trash_nb_ref; /* Number of reference pictures we'll *
58 * have if we trash the current pic */
59 unsigned int i_eta_p, i_eta_b;
60 mtime_t backward_pts, current_pts;
61 int i_current_period; /* period to add to the next picture */
62 int i_backward_period; /* period to add after the next
64 * (backward_period * period / 2) */
67 unsigned int i_trashed_pic, i_not_chosen_pic, i_pic;
71 #define I_CODING_TYPE 1
72 #define P_CODING_TYPE 2
73 #define B_CODING_TYPE 3
74 #define D_CODING_TYPE 4 /* MPEG-1 ONLY */
75 /* other values are reserved */
79 #define BOTTOM_FIELD 2
80 #define FRAME_STRUCTURE 3
82 /*****************************************************************************
84 *****************************************************************************/
85 #define vout_SynchroInit(a,b) __vout_SynchroInit(VLC_OBJECT(a),b)
86 VLC_EXPORT( vout_synchro_t *, __vout_SynchroInit, ( vlc_object_t *, int ) );
87 VLC_EXPORT( void, vout_SynchroRelease, ( vout_synchro_t * ) );
88 VLC_EXPORT( void, vout_SynchroReset, ( vout_synchro_t * ) );
89 VLC_EXPORT( vlc_bool_t, vout_SynchroChoose, ( vout_synchro_t *, int, int ) );
90 VLC_EXPORT( void, vout_SynchroTrash, ( vout_synchro_t * ) );
91 VLC_EXPORT( void, vout_SynchroDecode, ( vout_synchro_t * ) );
92 VLC_EXPORT( void, vout_SynchroEnd, ( vout_synchro_t *, int, vlc_bool_t ) );
93 VLC_EXPORT( mtime_t, vout_SynchroDate, ( vout_synchro_t * ) );
94 VLC_EXPORT( void, vout_SynchroNewPicture, ( vout_synchro_t *, int, int, mtime_t, mtime_t, int ) );