1 /*****************************************************************************
2 * input_pcr.h: PCR management interface
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public
19 * License along with this program; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
22 *****************************************************************************/
24 /* Maximum number of samples used to compute the dynamic average value,
25 * it is also the maximum of c_average in the pcr_descriptor_struct.
26 * We use the following formula :
27 * new_average = (old_average * c_average + new_sample_value) / (c_average +1) */
28 #define PCR_MAX_AVERAGE_COUNTER 40
30 /* Maximum gap allowed between two PCRs. */
31 #define PCR_MAX_GAP 1000000
34 #define SYNCHRO_NOT_STARTED 1
35 #define SYNCHRO_START 2
36 #define SYNCHRO_REINIT 3
38 /*****************************************************************************
40 *****************************************************************************/
41 int input_PcrInit ( input_thread_t *p_input );
42 void input_PcrDecode ( input_thread_t *p_input, es_descriptor_t* p_es,
44 void input_PcrEnd ( input_thread_t *p_input );