1 /*****************************************************************************
2 * input_ts.c: TS demux and netlist management
3 *****************************************************************************
4 * Copyright (C) 1998, 1999, 2000 VideoLAN
5 * $Id: input_ts.c,v 1.4 2001/02/20 02:53:13 stef Exp $
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
34 #include <sys/types.h>
48 #include "stream_control.h"
49 #include "input_ext-intf.h"
50 #include "input_ext-dec.h"
55 #include "mpeg_system.h"
56 #include "input_netlist.h"
58 /*****************************************************************************
60 *****************************************************************************/
61 static int TSProbe ( probedata_t * );
62 static int TSRead ( struct input_thread_s *,
63 data_packet_t * p_packets[INPUT_READ_ONCE] );
64 static void TSInit ( struct input_thread_s * );
65 static void TSEnd ( struct input_thread_s * );
67 /*****************************************************************************
68 * Functions exported as capabilities. They are declared as static so that
69 * we don't pollute the namespace too much.
70 *****************************************************************************/
71 void input_getfunctions( function_list_t * p_function_list )
73 #define input p_function_list->functions.input
74 p_function_list->pf_probe = TSProbe;
75 input.pf_init = TSInit;
76 input.pf_open = input_FileOpen;
77 input.pf_close = input_FileClose;
79 input.pf_set_area = NULL;
80 input.pf_read = TSRead;
81 input.pf_demux = input_DemuxTS;
82 input.pf_new_packet = input_NetlistNewPacket;
83 input.pf_new_pes = input_NetlistNewPES;
84 input.pf_delete_packet = input_NetlistDeletePacket;
85 input.pf_delete_pes = input_NetlistDeletePES;
86 input.pf_rewind = NULL;
91 /*****************************************************************************
92 * TSProbe: verifies that the stream is a TS stream
93 *****************************************************************************/
94 static int TSProbe( probedata_t * p_data )
96 input_thread_t * p_input = (input_thread_t *)p_data;
98 char * psz_name = p_input->p_source;
102 if( TestMethod( INPUT_METHOD_VAR, "ts" ) )
107 if( ( strlen(psz_name) > 5 ) && !strncasecmp( psz_name, "file:", 5 ) )
109 /* If the user specified "file:" then it's probably a file */
113 i_handle = open( psz_name, 0 );
123 /*****************************************************************************
124 * TSInit: initializes TS structures
125 *****************************************************************************/
126 static void TSInit( input_thread_t * p_input )
128 /* Initialize netlist and TS structures */
129 thread_ts_data_t * p_method;
130 pgrm_ts_data_t * p_pgrm_demux;
131 es_descriptor_t * kludge1;
133 /* Initialise structure */
134 p_method = malloc( sizeof( thread_ts_data_t ) );
135 if( p_method == NULL )
137 intf_ErrMsg( "Out of memory" );
138 p_input->b_error = 1;
142 p_input->p_plugin_data = (void *)p_method;
143 p_input->p_method_data = NULL;
146 /* XXX : For the time being, only file, after, i'll do the network */
148 /* Initialize netlist */
149 if( input_NetlistInit( p_input, NB_DATA, NB_PES, TS_PACKET_SIZE,
152 intf_ErrMsg( "Could not initialize netlist" );
156 /* Initialize the stream */
157 input_InitStream( p_input, sizeof( stream_ts_data_t ) );
159 /* FIXME : PSIDemux and PSIDecode */
160 /* Add audio and video programs */
161 /* p_input->stream.pp_programs[0] = */
162 input_AddProgram( p_input, 0, sizeof( pgrm_ts_data_t ) );
164 (pgrm_ts_data_t *)p_input->stream.pp_programs[0]->p_demux_data;
165 p_pgrm_demux->i_pcr_pid = 0x78;
167 kludge1 = input_AddES( p_input, p_input->stream.pp_programs[0],
168 0x78, sizeof( es_ts_data_t ) );
171 kludge1->i_type = MPEG2_VIDEO_ES;
173 input_SelectES( p_input, kludge1 );
175 vlc_mutex_lock( &(p_input->stream.stream_lock) );
176 p_input->stream.pp_programs[0]->b_is_ok = 1;
177 vlc_mutex_unlock( &(p_input->stream.stream_lock) );
180 intf_ErrMsg("End of TSINIT");
183 /*****************************************************************************
184 * TSEnd: frees unused data
185 *****************************************************************************/
186 static void TSEnd( input_thread_t * p_input )
191 /*****************************************************************************
192 * TSRead: reads data packets
193 *****************************************************************************
194 * Returns -1 in case of error, 0 if everything went well, and 1 in case of
196 *****************************************************************************/
197 static int TSRead( input_thread_t * p_input,
198 data_packet_t * pp_packets[INPUT_READ_ONCE] )
200 unsigned int i_read, i_loop;
201 struct iovec * p_iovec;
203 memset( pp_packets, 0, INPUT_READ_ONCE*sizeof(data_packet_t *) );
205 p_iovec = input_NetlistGetiovec( p_input->p_method_data );
207 if ( p_iovec == NULL )
209 return( -1 ); /* empty netlist */
212 i_read = readv( p_input->i_handle, p_iovec, INPUT_READ_ONCE );
216 intf_ErrMsg( "Could not readv" );
220 input_NetlistMviovec( p_input->p_method_data,
221 (int)(i_read/TS_PACKET_SIZE) , pp_packets );
223 /* check correct TS header */
224 for( i_loop=0; i_loop < (int)(i_read/TS_PACKET_SIZE); i_loop++ )
226 if( pp_packets[i_loop]->p_buffer[0] != 0x47 )
227 intf_ErrMsg( "Bad TS Packet (starcode != 0x47)." );