1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VideoLAN
5 * $Id: ninput.h,v 1.3 2003/08/02 19:16:04 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
30 * This will allow you to easily handle read/seek in demuxer modules.
33 * create a "stream_t *" from an "input_thread_t *".
35 * destroy a previously "stream_t *" instances.
37 * Try to read "i_read" bytes into a buffer pointed by "p_read".
38 * If "p_read" is NULL then data are skipped instead of read.
39 * The return value is the real numbers of bytes read/skip. If
40 * this value is less than i_read that means that it's the end
43 * Store in pp_peek a pointer to the next "i_peek" bytes in the
45 * The return value is the real numbers of valid bytes, if it's
46 * less or equal to 0, *pp_peek is invalid.
47 * XXX: it's a pointer to internal buffer and it will be invalid
48 * as soons as other stream_* functions are called.
49 * be 0 (then *pp_peek isn't valid).
50 * XXX: due to input limitation, it could be less than i_peek without
51 * meaning the end of the stream (but only when you have
52 * i_peek >= p_input->i_bufsize)
54 * Read "i_size" bytes and store them in a pes_packet_t.
55 * Only fields p_first, p_last, i_nb_data, and i_pes_size are set.
56 * (Of course, you need to fill i_dts, i_pts, ... )
57 * If only less than "i_size" bytes are available NULL is returned.
58 * - stream_vaControl, stream_Control
59 * Use to control the "stream_t *". Look at stream_query_e for possible
60 * "i_query" value and format arguments.
61 * Return VLC_SUCCESS if ... succeed ;) and VLC_EGENERIC if failed or
68 STREAM_CAN_SEEK, /* arg1= vlc_bool_t * res=cannot fail*/
69 STREAM_CAN_FASTSEEK, /* arg1= vlc_bool_t * res=cannot fail*/
72 STREAM_SET_POSITION, /* arg1= int64_t res=can fail */
73 STREAM_GET_POSITION, /* arg1= int64_t * res=cannot fail*/
75 STREAM_GET_SIZE, /* arg1= int64_t * res=cannot fail (0 if no sense)*/
80 * XXX: don't look at it yet.
82 #define DEMUX_POSITION_MAX 10000
85 DEMUX_GET_POSITION, /* arg1= int64_t * res= */
86 DEMUX_SET_POSITION, /* arg1= int64_t res=can fail */
88 DEMUX_GET_TIME, /* arg1= int64_t * res= */
89 DEMUX_SET_TIME, /* arg1= int64_t res=can fail */
91 DEMUX_GET_LENGTH /* arg1= int64_t * res=can fail */
96 VLC_EXPORT( stream_t *, stream_OpenInput, ( input_thread_t * ) );
97 VLC_EXPORT( void, stream_Release, ( stream_t * ) );
98 VLC_EXPORT( int, stream_vaControl, ( stream_t *, int i_query, va_list ) );
99 VLC_EXPORT( int, stream_Control, ( stream_t *, int i_query, ... ) );
100 VLC_EXPORT( int, stream_Read, ( stream_t *, void *p_read, int i_read ) );
101 VLC_EXPORT( int, stream_Peek, ( stream_t *, uint8_t **pp_peek, int i_peek ) );
102 VLC_EXPORT( pes_packet_t *, stream_PesPacket, ( stream_t *, int i_size ) );
105 VLC_EXPORT( int, demux_vaControl, ( input_thread_t *, int i_query, va_list ) );
106 VLC_EXPORT( int, demux_Control, ( input_thread_t *, int i_query, ... ) );