1 /*****************************************************************************
2 * input.h: structures of the input not exported to other modules
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
5 * $Id: input.h,v 1.36 2001/04/25 10:22:32 massiot Exp $
7 * Authors: Christophe Massiot <massiot@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 *****************************************************************************/
25 * Communication plugin -> input
28 /* FIXME: you've gotta move this move this, you've gotta move this move this */
29 #define INPUT_READ_ONCE 7 /* We live in a world dominated by Ethernet. *
30 * Ethernet MTU is 1500 bytes, so in a UDP *
31 * packet we can put : 1500/188 = 7 TS *
32 * packets. Have a nice day and merry Xmas. */
33 #define PADDING_PACKET_SIZE 188 /* Size of the NULL packet inserted in case
34 * of data loss (this should be < 188). */
35 #define PADDING_PACKET_NUMBER 10 /* Number of padding packets top insert to
36 * escape a decoder. */
39 /*****************************************************************************
40 * Prototypes from input_ext-dec.c
41 *****************************************************************************/
42 void InitBitstream ( struct bit_stream_s *, struct decoder_fifo_s *,
43 void (* pf_bitstream_callback)( struct bit_stream_s *,
45 void * p_callback_arg );
46 void NextDataPacket ( struct bit_stream_s * );
48 /*****************************************************************************
49 * Prototypes from input.c to open files
50 *****************************************************************************/
51 void input_FileOpen ( struct input_thread_s * );
52 void input_FileClose( struct input_thread_s * );
54 /*****************************************************************************
55 * Prototypes from input.c to open a network socket
56 *****************************************************************************/
57 #if !defined( SYS_BEOS ) && !defined( SYS_NTO )
58 void input_NetworkOpen ( struct input_thread_s * );
59 void input_NetworkClose( struct input_thread_s * );
62 /*****************************************************************************
63 * Prototypes from input_programs.c
64 *****************************************************************************/
65 int input_InitStream( struct input_thread_s *, size_t );
66 void input_EndStream ( struct input_thread_s * );
67 struct pgrm_descriptor_s * input_FindProgram( struct input_thread_s *, u16 );
68 struct pgrm_descriptor_s * input_AddProgram ( struct input_thread_s *,
70 void input_DelProgram( struct input_thread_s *, struct pgrm_descriptor_s * );
71 struct input_area_s * input_AddArea( struct input_thread_s * );
72 void input_DelArea ( struct input_thread_s *, struct input_area_s * );
73 struct es_descriptor_s * input_FindES( struct input_thread_s *, u16 );
74 struct es_descriptor_s * input_AddES ( struct input_thread_s *,
75 struct pgrm_descriptor_s *, u16,
77 void input_DelES ( struct input_thread_s *, struct es_descriptor_s * );
78 int input_SelectES ( struct input_thread_s *, struct es_descriptor_s * );
79 int input_UnselectES( struct input_thread_s *, struct es_descriptor_s * );
81 /*****************************************************************************
82 * Prototypes from input_dec.c
83 *****************************************************************************/
84 //decoder_capabilities_s * input_ProbeDecoder( void );
85 vlc_thread_t input_RunDecoder( struct decoder_capabilities_s *, void * );
86 void input_EndDecoder( struct input_thread_s *, struct es_descriptor_s * );
87 void input_DecodePES ( struct decoder_fifo_s *, struct pes_packet_s * );
88 void input_EscapeDiscontinuity( struct input_thread_s *,
89 struct pgrm_descriptor_s * );
90 void input_EscapeAudioDiscontinuity( struct input_thread_s *,
91 struct pgrm_descriptor_s * );
93 /*****************************************************************************
94 * Prototypes from input_clock.c
95 *****************************************************************************/
96 void input_ClockInit( struct pgrm_descriptor_s * );
97 void input_ClockManageRef( struct input_thread_s *,
98 struct pgrm_descriptor_s *, mtime_t );
99 mtime_t input_ClockGetTS( struct input_thread_s *,
100 struct pgrm_descriptor_s *, mtime_t );
102 /*****************************************************************************
103 * Create a NULL packet for padding in case of a data loss
104 *****************************************************************************/
105 static __inline__ void input_NullPacket( input_thread_t * p_input,
106 es_descriptor_t * p_es )
108 data_packet_t * p_pad_data;
109 pes_packet_t * p_pes;
111 if( (p_pad_data = p_input->pf_new_packet(
112 p_input->p_method_data,
113 PADDING_PACKET_SIZE )) == NULL )
115 intf_ErrMsg("Out of memory");
116 p_input->b_error = 1;
120 memset( p_pad_data->p_buffer, 0, PADDING_PACKET_SIZE );
121 p_pad_data->b_discard_payload = 1;
126 p_pes->b_discontinuity = 1;
127 p_es->p_last->p_next = p_pad_data;
128 p_es->p_last = p_pad_data;
132 if( (p_pes = p_input->pf_new_pes( p_input->p_method_data )) == NULL )
134 intf_ErrMsg("Out of memory");
135 p_input->b_error = 1;
139 p_pes->i_rate = p_input->stream.control.i_rate;
140 p_pes->p_first = p_pad_data;
141 p_pes->b_discontinuity = 1;
142 input_DecodePES( p_es->p_decoder_fifo, p_pes );