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 1.37 2001/05/30 17:03:11 sam 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_programs.c
50 *****************************************************************************/
51 int input_InitStream( struct input_thread_s *, size_t );
52 void input_EndStream ( struct input_thread_s * );
53 struct pgrm_descriptor_s * input_FindProgram( struct input_thread_s *, u16 );
54 struct pgrm_descriptor_s * input_AddProgram ( struct input_thread_s *,
56 void input_DelProgram( struct input_thread_s *, struct pgrm_descriptor_s * );
57 struct input_area_s * input_AddArea( struct input_thread_s * );
58 void input_DelArea ( struct input_thread_s *, struct input_area_s * );
59 struct es_descriptor_s * input_FindES( struct input_thread_s *, u16 );
60 struct es_descriptor_s * input_AddES ( struct input_thread_s *,
61 struct pgrm_descriptor_s *, u16,
63 void input_DelES ( struct input_thread_s *, struct es_descriptor_s * );
64 int input_SelectES ( struct input_thread_s *, struct es_descriptor_s * );
65 int input_UnselectES( struct input_thread_s *, struct es_descriptor_s * );
67 /*****************************************************************************
68 * Prototypes from input_dec.c
69 *****************************************************************************/
70 //decoder_capabilities_s * input_ProbeDecoder( void );
71 vlc_thread_t input_RunDecoder( struct decoder_capabilities_s *, void * );
72 void input_EndDecoder( struct input_thread_s *, struct es_descriptor_s * );
73 void input_DecodePES ( struct decoder_fifo_s *, struct pes_packet_s * );
74 void input_EscapeDiscontinuity( struct input_thread_s *,
75 struct pgrm_descriptor_s * );
76 void input_EscapeAudioDiscontinuity( struct input_thread_s *,
77 struct pgrm_descriptor_s * );
79 /*****************************************************************************
80 * Prototypes from input_clock.c
81 *****************************************************************************/
82 void input_ClockInit( struct pgrm_descriptor_s * );
83 void input_ClockManageRef( struct input_thread_s *,
84 struct pgrm_descriptor_s *, mtime_t );
85 mtime_t input_ClockGetTS( struct input_thread_s *,
86 struct pgrm_descriptor_s *, mtime_t );
88 /*****************************************************************************
89 * Create a NULL packet for padding in case of a data loss
90 *****************************************************************************/
91 static __inline__ void input_NullPacket( input_thread_t * p_input,
92 es_descriptor_t * p_es )
94 data_packet_t * p_pad_data;
97 if( (p_pad_data = p_input->pf_new_packet(
98 p_input->p_method_data,
99 PADDING_PACKET_SIZE )) == NULL )
101 intf_ErrMsg("Out of memory");
102 p_input->b_error = 1;
106 memset( p_pad_data->p_buffer, 0, PADDING_PACKET_SIZE );
107 p_pad_data->b_discard_payload = 1;
112 p_pes->b_discontinuity = 1;
113 p_es->p_last->p_next = p_pad_data;
114 p_es->p_last = p_pad_data;
118 if( (p_pes = p_input->pf_new_pes( p_input->p_method_data )) == NULL )
120 intf_ErrMsg("Out of memory");
121 p_input->b_error = 1;
125 p_pes->i_rate = p_input->stream.control.i_rate;
126 p_pes->p_first = p_pad_data;
127 p_pes->b_discontinuity = 1;
128 input_DecodePES( p_es->p_decoder_fifo, p_pes );