scan.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:28k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * scan.c: DVB scanner helpers
- *****************************************************************************
- * Copyright (C) 2008 the VideoLAN team
- *
- * Authors: Laurent Aimar <fenrir@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_access.h>
- #include <vlc_dialog.h>
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #endif
- #include <fcntl.h>
- #include <sys/types.h>
- #include <sys/poll.h>
- #include <errno.h>
- /* Include dvbpsi headers */
- #ifdef HAVE_DVBPSI_DR_H
- # include <dvbpsi/dvbpsi.h>
- # include <dvbpsi/descriptor.h>
- # include <dvbpsi/pat.h>
- # include <dvbpsi/pmt.h>
- # include <dvbpsi/dr.h>
- # include <dvbpsi/psi.h>
- # include <dvbpsi/demux.h>
- # include <dvbpsi/sdt.h>
- #else
- # include "dvbpsi.h"
- # include "descriptor.h"
- # include "tables/pat.h"
- # include "tables/pmt.h"
- # include "descriptors/dr.h"
- # include "psi.h"
- # include "demux.h"
- # include "tables/sdt.h"
- #endif
- #ifdef ENABLE_HTTPD
- # include "vlc_httpd.h"
- #endif
- #include "dvb.h"
- /* */
- scan_service_t *scan_service_New( int i_program, const scan_configuration_t *p_cfg )
- {
- scan_service_t *p_srv = malloc( sizeof(*p_srv) );
- if( !p_srv )
- return NULL;
- p_srv->i_program = i_program;
- p_srv->cfg = *p_cfg;
- p_srv->i_snr = -1;
- p_srv->type = SERVICE_UNKNOWN;
- p_srv->psz_name = NULL;
- p_srv->i_channel = -1;
- p_srv->b_crypted = false;
- p_srv->i_network_id = -1;
- p_srv->i_nit_version = -1;
- p_srv->i_sdt_version = -1;
- return p_srv;
- }
- void scan_service_Delete( scan_service_t *p_srv )
- {
- free( p_srv->psz_name );
- free( p_srv );
- }
- /* */
- int scan_Init( vlc_object_t *p_obj, scan_t *p_scan, const scan_parameter_t *p_parameter )
- {
- if( p_parameter->type == SCAN_DVB_T )
- {
- msg_Dbg( p_obj, "DVB-T scanning:" );
- msg_Dbg( p_obj, " - frequency [%d, %d]",
- p_parameter->frequency.i_min, p_parameter->frequency.i_max );
- msg_Dbg( p_obj, " - bandwidth [%d,%d]",
- p_parameter->bandwidth.i_min, p_parameter->bandwidth.i_max );
- msg_Dbg( p_obj, " - exhaustive mode %s", p_parameter->b_exhaustive ? "on" : "off" );
- }
- else if( p_parameter->type == SCAN_DVB_C )
- {
- msg_Dbg( p_obj, "DVB-C scanning:" );
- msg_Dbg( p_obj, " - frequency [%d, %d]",
- p_parameter->frequency.i_min, p_parameter->frequency.i_max );
- msg_Dbg( p_obj, " - bandwidth [%d,%d]",
- p_parameter->bandwidth.i_min, p_parameter->bandwidth.i_max );
- msg_Dbg( p_obj, " - exhaustive mode %s", p_parameter->b_exhaustive ? "on" : "off" );
- }
- else
- {
- return VLC_EGENERIC;
- }
- p_scan->p_obj = VLC_OBJECT(p_obj);
- p_scan->i_index = 0;
- p_scan->p_dialog = NULL;
- TAB_INIT( p_scan->i_service, p_scan->pp_service );
- p_scan->parameter = *p_parameter;
- p_scan->i_time_start = mdate();
- return VLC_SUCCESS;
- }
- void scan_Clean( scan_t *p_scan )
- {
- if( p_scan->p_dialog != NULL )
- dialog_ProgressDestroy( p_scan->p_dialog );
- for( int i = 0; i < p_scan->i_service; i++ )
- scan_service_Delete( p_scan->pp_service[i] );
- TAB_CLEAN( p_scan->i_service, p_scan->pp_service );
- }
- static int ScanDvbCNextFast( scan_t *p_scan, scan_configuration_t *p_cfg, double *pf_pos )
- {
- msg_Dbg( p_scan->p_obj, "Scan index %"PRId64, p_scan->i_index );
- /* Values taken from dvb-scan utils frequency-files, sorted by how
- * often they appear. This hopefully speeds up finding services. */
- static const unsigned short frequencies[] = {
- 410, 426, 418, 394, 402, 362,
- 370, 354, 346, 442, 434, 386,
- 378, 450, 306, 162, 154, 474,
- 466, 458, 338, 754, 714, 586,
- 562, 546, 514, 490, 314, 170,
- 113, 770, 762, 746, 738, 730,
- 722, 706, 690, 682, 674, 666,
- 650, 642, 634, 554, 538, 530,
- 506, 498, 330, 322, 283, 850,
- 842, 834, 818, 810, 802, 794,
- 786, 778, 748, 732, 728, 724,
- 720, 698, 660, 658, 656, 610,
- 594, 578, 570, 522, 482, 377,
- 372, 347, 339, 323, 315, 299,
- 298, 291, 275, 267, 259, 255,
- 251, 243, 235, 232, 227, 219,
- 211, 203, 195, 187, 179, 171,
- 163, 155, 147, 146, 143, 139,
- 131, 123, 121
- };
- enum { num_frequencies = (sizeof(frequencies)/sizeof(*frequencies)) };
- if( p_scan->i_index < num_frequencies )
- {
- p_cfg->i_frequency = 1000000 * ( frequencies[ p_scan->i_index ] );
- *pf_pos = (double)p_scan->i_index / num_frequencies;
- return VLC_SUCCESS;
- }
- return VLC_EGENERIC;
- }
- static int ScanDvbTNextExhaustive( scan_t *p_scan, scan_configuration_t *p_cfg, double *pf_pos )
- {
- if( p_scan->i_index > p_scan->parameter.frequency.i_count * p_scan->parameter.bandwidth.i_count )
- return VLC_EGENERIC;
- const int i_bi = p_scan->i_index % p_scan->parameter.bandwidth.i_count;
- const int i_fi = p_scan->i_index / p_scan->parameter.bandwidth.i_count;
- p_cfg->i_frequency = p_scan->parameter.frequency.i_min + i_fi * p_scan->parameter.frequency.i_step;
- p_cfg->i_bandwidth = p_scan->parameter.bandwidth.i_min + i_bi * p_scan->parameter.bandwidth.i_step;
- *pf_pos = (double)p_scan->i_index / p_scan->parameter.frequency.i_count;
- return VLC_SUCCESS;
- }
- static int ScanDvbTNextFast( scan_t *p_scan, scan_configuration_t *p_cfg, double *pf_pos )
- {
- static const int i_band_count = 2;
- static const struct
- {
- const char *psz_name;
- int i_min;
- int i_max;
- }
- band[2] =
- {
- { "VHF", 174, 230 },
- { "UHF", 470, 862 },
- };
- const int i_offset_count = 5;
- const int i_mhz = 1000000;
- /* We will probe the whole band divided in all bandwidth possibility trying
- * i_offset_count offset around the position
- */
- for( ;; p_scan->i_index++ )
- {
- const int i_bi = p_scan->i_index % p_scan->parameter.bandwidth.i_count;
- const int i_oi = (p_scan->i_index / p_scan->parameter.bandwidth.i_count) % i_offset_count;
- const int i_fi = (p_scan->i_index / p_scan->parameter.bandwidth.i_count) / i_offset_count;
- const int i_bandwidth = p_scan->parameter.bandwidth.i_min + i_bi * p_scan->parameter.bandwidth.i_step;
- int i;
- for( i = 0; i < i_band_count; i++ )
- {
- if( i_fi >= band[i].i_min && i_fi <= band[i].i_max )
- break;
- }
- if( i >=i_band_count )
- {
- if( i_fi > band[i_band_count-1].i_max )
- return VLC_EGENERIC;
- continue;
- }
- const int i_frequency_min = band[i].i_min*i_mhz + i_bandwidth*i_mhz/2;
- const int i_frequency_base = i_fi*i_mhz;
- if( i_frequency_base >= i_frequency_min && ( i_frequency_base - i_frequency_min ) % ( i_bandwidth*i_mhz ) == 0 )
- {
- const int i_frequency = i_frequency_base + ( i_oi - i_offset_count/2 ) * p_scan->parameter.frequency.i_step;
- if( i_frequency < p_scan->parameter.frequency.i_min ||
- i_frequency > p_scan->parameter.frequency.i_max )
- continue;
- p_cfg->i_frequency = i_frequency;
- p_cfg->i_bandwidth = i_bandwidth;
- int i_current = 0, i_total = 0;
- for( int i = 0; i < i_band_count; i++ )
- {
- const int i_frag = band[i].i_max-band[i].i_min;
- if( i_fi >= band[i].i_min )
- i_current += __MIN( i_fi - band[i].i_min, i_frag );
- i_total += i_frag;
- }
- *pf_pos = (double)( i_current + (double)i_oi / i_offset_count ) / i_total;
- return VLC_SUCCESS;
- }
- }
- }
- static int ScanDvbCNext( scan_t *p_scan, scan_configuration_t *p_cfg, double *pf_pos )
- {
- if( p_scan->parameter.b_exhaustive )
- return ScanDvbTNextExhaustive( p_scan, p_cfg, pf_pos );
- else
- return ScanDvbCNextFast( p_scan, p_cfg, pf_pos );
- }
- static int ScanDvbTNext( scan_t *p_scan, scan_configuration_t *p_cfg, double *pf_pos )
- {
- if( p_scan->parameter.b_exhaustive )
- return ScanDvbTNextExhaustive( p_scan, p_cfg, pf_pos );
- else
- return ScanDvbTNextFast( p_scan, p_cfg, pf_pos );
- }
- int scan_Next( scan_t *p_scan, scan_configuration_t *p_cfg )
- {
- double f_position;
- int i_ret;
- if( scan_IsCancelled( p_scan ) )
- return VLC_EGENERIC;
- memset( p_cfg, 0, sizeof(*p_cfg) );
- switch( p_scan->parameter.type )
- {
- case SCAN_DVB_T:
- i_ret = ScanDvbTNext( p_scan, p_cfg, &f_position );
- break;
- case SCAN_DVB_C:
- i_ret = ScanDvbCNext( p_scan, p_cfg, &f_position );
- break;
- default:
- i_ret = VLC_EGENERIC;
- break;
- }
- if( i_ret )
- return i_ret;
- char *psz_text;
- int i_service = 0;
- for( int i = 0; i < p_scan->i_service; i++ )
- {
- if( p_scan->pp_service[i]->type != SERVICE_UNKNOWN )
- i_service++;
- }
- if( asprintf( &psz_text, _("%.1f MHz (%d services)"),
- (double)p_cfg->i_frequency / 1000000, i_service ) >= 0 )
- {
- const mtime_t i_eta = f_position > 0.005 ? (mdate() - p_scan->i_time_start) * ( 1.0 / f_position - 1.0 ) : -1;
- char psz_eta[MSTRTIME_MAX_SIZE];
- if( i_eta >= 0 )
- msg_Info( p_scan->p_obj, "Scan ETA %s | %f", secstotimestr( psz_eta, i_eta/1000000 ), f_position * 100 );
- if( p_scan->p_dialog == NULL )
- p_scan->p_dialog = dialog_ProgressCreate( p_scan->p_obj, _("Scanning DVB-T"), psz_text, _("Cancel") );
- if( p_scan->p_dialog != NULL )
- dialog_ProgressSet( p_scan->p_dialog, psz_text, f_position );
- free( psz_text );
- }
- p_scan->i_index++;
- return VLC_SUCCESS;
- }
- bool scan_IsCancelled( scan_t *p_scan )
- {
- return p_scan->p_dialog && dialog_ProgressCancelled( p_scan->p_dialog );
- }
- static scan_service_t *ScanFindService( scan_t *p_scan, int i_service_start, int i_program )
- {
- for( int i = i_service_start; i < p_scan->i_service; i++ )
- {
- if( p_scan->pp_service[i]->i_program == i_program )
- return p_scan->pp_service[i];
- }
- return NULL;
- }
- /* FIXME handle properly string (convert to utf8) */
- static void PATCallBack( scan_session_t *p_session, dvbpsi_pat_t *p_pat )
- {
- vlc_object_t *p_obj = p_session->p_obj;
- msg_Dbg( p_obj, "PATCallBack" );
- /* */
- if( p_session->p_pat && p_session->p_pat->b_current_next )
- {
- dvbpsi_DeletePAT( p_session->p_pat );
- p_session->p_pat = NULL;
- }
- if( p_session->p_pat )
- {
- dvbpsi_DeletePAT( p_pat );
- return;
- }
- dvbpsi_pat_program_t *p_program;
- /* */
- p_session->p_pat = p_pat;
- /* */
- msg_Dbg( p_obj, "new PAT ts_id=%d version=%d current_next=%d",
- p_pat->i_ts_id, p_pat->i_version, p_pat->b_current_next );
- for( p_program = p_pat->p_first_program; p_program != NULL; p_program = p_program->p_next )
- {
- msg_Dbg( p_obj, " * number=%d pid=%d", p_program->i_number, p_program->i_pid );
- if( p_program->i_number == 0 )
- p_session->i_nit_pid = p_program->i_pid;
- }
- }
- static void SDTCallBack( scan_session_t *p_session, dvbpsi_sdt_t *p_sdt )
- {
- vlc_object_t *p_obj = p_session->p_obj;
- msg_Dbg( p_obj, "SDTCallBack" );
- if( p_session->p_sdt && p_session->p_sdt->b_current_next )
- {
- dvbpsi_DeleteSDT( p_session->p_sdt );
- p_session->p_sdt = NULL;
- }
- if( p_session->p_sdt )
- {
- dvbpsi_DeleteSDT( p_sdt );
- return;
- }
- /* */
- p_session->p_sdt = p_sdt;
- /* */
- msg_Dbg( p_obj, "new SDT ts_id=%d version=%d current_next=%d network_id=%d",
- p_sdt->i_ts_id, p_sdt->i_version, p_sdt->b_current_next,
- p_sdt->i_network_id );
- dvbpsi_sdt_service_t *p_srv;
- for( p_srv = p_sdt->p_first_service; p_srv; p_srv = p_srv->p_next )
- {
- dvbpsi_descriptor_t *p_dr;
- msg_Dbg( p_obj, " * service id=%d eit schedule=%d present=%d running=%d free_ca=%d",
- p_srv->i_service_id, p_srv->b_eit_schedule,
- p_srv->b_eit_present, p_srv->i_running_status,
- p_srv->b_free_ca );
- for( p_dr = p_srv->p_first_descriptor; p_dr; p_dr = p_dr->p_next )
- {
- if( p_dr->i_tag == 0x48 )
- {
- dvbpsi_service_dr_t *pD = dvbpsi_DecodeServiceDr( p_dr );
- char str2[257];
- memcpy( str2, pD->i_service_name, pD->i_service_name_length );
- str2[pD->i_service_name_length] = ' ';
- msg_Dbg( p_obj, " - type=%d name=%s",
- pD->i_service_type, str2 );
- }
- else
- {
- msg_Dbg( p_obj, " * dsc 0x%x", p_dr->i_tag );
- }
- }
- }
- }
- #ifdef DVBPSI_USE_NIT
- static void NITCallBack( scan_session_t *p_session, dvbpsi_nit_t *p_nit )
- {
- vlc_object_t *p_obj = p_session->p_obj;
- msg_Dbg( p_obj, "NITCallBack" );
- msg_Dbg( p_obj, "new NIT network_id=%d version=%d current_next=%d",
- p_nit->i_network_id, p_nit->i_version, p_nit->b_current_next );
- /* */
- if( p_session->p_nit && p_session->p_nit->b_current_next )
- {
- dvbpsi_DeleteNIT( p_session->p_nit );
- p_session->p_nit = NULL;
- }
- if( p_session->p_nit )
- {
- dvbpsi_DeleteNIT( p_nit );
- return;
- }
- /* */
- p_session->p_nit = p_nit;
- dvbpsi_descriptor_t *p_dsc;
- for( p_dsc = p_nit->p_first_descriptor; p_dsc != NULL; p_dsc = p_dsc->p_next )
- {
- if( p_dsc->i_tag == 0x40 )
- {
- msg_Dbg( p_obj, " * network name descriptor" );
- char str1[257];
- memcpy( str1, p_dsc->p_data, p_dsc->i_length );
- str1[p_dsc->i_length] = ' ';
- msg_Dbg( p_obj, " * name %s", str1 );
- }
- else if( p_dsc->i_tag == 0x4a )
- {
- msg_Dbg( p_obj, " * linkage descriptor" );
- uint16_t i_ts_id = GetWBE( &p_dsc->p_data[0] );
- uint16_t i_on_id = GetWBE( &p_dsc->p_data[2] );
- uint16_t i_service_id = GetWBE( &p_dsc->p_data[4] );
- int i_linkage_type = p_dsc->p_data[6];
- msg_Dbg( p_obj, " * ts_id %d", i_ts_id );
- msg_Dbg( p_obj, " * on_id %d", i_on_id );
- msg_Dbg( p_obj, " * service_id %d", i_service_id );
- msg_Dbg( p_obj, " * linkage_type %d", i_linkage_type );
- }
- else
- {
- msg_Dbg( p_obj, " * dsc 0x%x", p_dsc->i_tag );
- }
- }
- dvbpsi_nit_ts_t *p_ts;
- for( p_ts = p_nit->p_first_ts; p_ts != NULL; p_ts = p_ts->p_next )
- {
- msg_Dbg( p_obj, " * ts ts_id=0x%x original_id=0x%x", p_ts->i_ts_id, p_ts->i_orig_network_id );
- uint32_t i_private_data_id = 0;
- dvbpsi_descriptor_t *p_dsc;
- for( p_dsc = p_ts->p_first_descriptor; p_dsc != NULL; p_dsc = p_dsc->p_next )
- {
- if( p_dsc->i_tag == 0x41 )
- {
- msg_Dbg( p_obj, " * service list descriptor" );
- for( int i = 0; i < p_dsc->i_length/3; i++ )
- {
- uint16_t i_service_id = GetWBE( &p_dsc->p_data[3*i+0] );
- uint8_t i_service_type = p_dsc->p_data[3*i+2];
- msg_Dbg( p_obj, " * service_id=%d type=%d", i_service_id, i_service_type );
- }
- }
- else if( p_dsc->i_tag == 0x5a )
- {
- dvbpsi_terr_deliv_sys_dr_t *p_t = dvbpsi_DecodeTerrDelivSysDr( p_dsc );
- msg_Dbg( p_obj, " * terrestrial delivery system" );
- msg_Dbg( p_obj, " * centre_frequency 0x%x", p_t->i_centre_frequency );
- msg_Dbg( p_obj, " * bandwidth %d", 8 - p_t->i_bandwidth );
- msg_Dbg( p_obj, " * constellation %d", p_t->i_constellation );
- msg_Dbg( p_obj, " * hierarchy %d", p_t->i_hierarchy_information );
- msg_Dbg( p_obj, " * code_rate hp %d lp %d", p_t->i_code_rate_hp_stream, p_t->i_code_rate_lp_stream );
- msg_Dbg( p_obj, " * guard_interval %d", p_t->i_guard_interval );
- msg_Dbg( p_obj, " * transmission_mode %d", p_t->i_transmission_mode );
- msg_Dbg( p_obj, " * other_frequency_flag %d", p_t->i_other_frequency_flag );
- }
- else if( p_dsc->i_tag == 0x5f )
- {
- msg_Dbg( p_obj, " * private data specifier descriptor" );
- i_private_data_id = GetDWBE( &p_dsc->p_data[0] );
- msg_Dbg( p_obj, " * value 0x%8.8x", i_private_data_id );
- }
- else if( i_private_data_id == 0x28 && p_dsc->i_tag == 0x83 )
- {
- msg_Dbg( p_obj, " * logical channel descriptor (EICTA)" );
- for( int i = 0; i < p_dsc->i_length/4; i++ )
- {
- uint16_t i_service_id = GetWBE( &p_dsc->p_data[4*i+0] );
- int i_channel_number = GetWBE( &p_dsc->p_data[4*i+2] ) & 0x3ff;
- msg_Dbg( p_obj, " * service_id=%d channel_number=%d", i_service_id, i_channel_number );
- }
- }
- else
- {
- msg_Warn( p_obj, " * dsc 0x%x", p_dsc->i_tag );
- }
- }
- }
- }
- #endif
- static void PSINewTableCallBack( scan_session_t *p_session, dvbpsi_handle h, uint8_t i_table_id, uint16_t i_extension )
- {
- if( i_table_id == 0x42 )
- dvbpsi_AttachSDT( h, i_table_id, i_extension, (dvbpsi_sdt_callback)SDTCallBack, p_session );
- #ifdef DVBPSI_USE_NIT
- else if( i_table_id == 0x40 )
- dvbpsi_AttachNIT( h, i_table_id, i_extension, (dvbpsi_nit_callback)NITCallBack, p_session );
- #endif
- }
- int scan_session_Init( vlc_object_t *p_obj, scan_session_t *p_session, const scan_configuration_t *p_cfg )
- {
- /* */
- memset( p_session, 0, sizeof(*p_session) );
- p_session->p_obj = p_obj;
- p_session->cfg = *p_cfg;
- p_session->i_snr = -1;
- p_session->pat = NULL;
- p_session->p_pat = NULL;
- p_session->i_nit_pid = -1;
- p_session->sdt = NULL;
- p_session->p_sdt = NULL;
- #ifdef DVBPSI_USE_NIT
- p_session->nit = NULL;
- p_session->p_nit = NULL;
- #endif
- return VLC_SUCCESS;
- }
- void scan_session_Clean( scan_t *p_scan, scan_session_t *p_session )
- {
- const int i_service_start = p_scan->i_service;
- dvbpsi_pat_t *p_pat = p_session->p_pat;
- dvbpsi_sdt_t *p_sdt = p_session->p_sdt;
- #ifdef DVBPSI_USE_NIT
- dvbpsi_nit_t *p_nit = p_session->p_nit;
- #endif
- if( p_pat )
- {
- /* Parse PAT */
- dvbpsi_pat_program_t *p_program;
- for( p_program = p_pat->p_first_program; p_program != NULL; p_program = p_program->p_next )
- {
- if( p_program->i_number == 0 ) /* NIT */
- continue;
- scan_service_t *s = scan_service_New( p_program->i_number, &p_session->cfg );
- TAB_APPEND( p_scan->i_service, p_scan->pp_service, s );
- }
- }
- /* Parse SDT */
- if( p_pat && p_sdt )
- {
- dvbpsi_sdt_service_t *p_srv;
- for( p_srv = p_sdt->p_first_service; p_srv; p_srv = p_srv->p_next )
- {
- scan_service_t *s = ScanFindService( p_scan, i_service_start, p_srv->i_service_id );
- dvbpsi_descriptor_t *p_dr;
- if( s )
- s->b_crypted = p_srv->b_free_ca;
- for( p_dr = p_srv->p_first_descriptor; p_dr; p_dr = p_dr->p_next )
- {
- if( p_dr->i_tag == 0x48 )
- {
- dvbpsi_service_dr_t *pD = dvbpsi_DecodeServiceDr( p_dr );
- if( s )
- {
- if( !s->psz_name )
- s->psz_name = dvbsi_to_utf8( pD->i_service_name, pD->i_service_name_length );
- if( s->type == SERVICE_UNKNOWN )
- {
- switch( pD->i_service_type )
- {
- case 0x01: s->type = SERVICE_DIGITAL_TELEVISION; break;
- case 0x02: s->type = SERVICE_DIGITAL_RADIO; break;
- case 0x16: s->type = SERVICE_DIGITAL_TELEVISION_AC_SD; break;
- case 0x19: s->type = SERVICE_DIGITAL_TELEVISION_AC_HD; break;
- }
- }
- }
- }
- }
- }
- }
- #ifdef DVBPSI_USE_NIT
- /* Parse NIT */
- if( p_pat && p_nit )
- {
- dvbpsi_nit_ts_t *p_ts;
- for( p_ts = p_nit->p_first_ts; p_ts != NULL; p_ts = p_ts->p_next )
- {
- uint32_t i_private_data_id = 0;
- dvbpsi_descriptor_t *p_dsc;
- if( p_ts->i_orig_network_id != p_nit->i_network_id || p_ts->i_ts_id != p_pat->i_ts_id )
- continue;
- for( p_dsc = p_ts->p_first_descriptor; p_dsc != NULL; p_dsc = p_dsc->p_next )
- {
- if( p_dsc->i_tag == 0x5f )
- {
- i_private_data_id = GetDWBE( &p_dsc->p_data[0] );
- }
- else if( i_private_data_id == 0x28 && p_dsc->i_tag == 0x83 )
- {
- for( int i = 0; i < p_dsc->i_length/4; i++ )
- {
- uint16_t i_service_id = GetWBE( &p_dsc->p_data[4*i+0] );
- int i_channel_number = GetWBE( &p_dsc->p_data[4*i+2] ) & 0x3ff;
- scan_service_t *s = ScanFindService( p_scan, i_service_start, i_service_id );
- if( s && s->i_channel < 0 )
- s->i_channel = i_channel_number;
- }
- }
- }
- }
- }
- #endif
- /* */
- for( int i = i_service_start; i < p_scan->i_service; i++ )
- {
- scan_service_t *p_srv = p_scan->pp_service[i];
- p_srv->i_snr = p_session->i_snr;
- if( p_sdt )
- p_srv->i_sdt_version = p_sdt->i_version;
- #ifdef DVBPSI_USE_NIT
- if( p_nit )
- {
- p_srv->i_network_id = p_nit->i_network_id;
- p_srv->i_nit_version = p_nit->i_version;
- }
- #endif
- }
- /* */
- if( p_session->pat )
- dvbpsi_DetachPAT( p_session->pat );
- if( p_session->p_pat )
- dvbpsi_DeletePAT( p_session->p_pat );
- if( p_session->sdt )
- dvbpsi_DetachDemux( p_session->sdt );
- if( p_session->p_sdt )
- dvbpsi_DeleteSDT( p_session->p_sdt );
- #ifdef DVBPSI_USE_NIT
- if( p_session->nit )
- dvbpsi_DetachDemux( p_session->nit );
- if( p_session->p_nit )
- dvbpsi_DeleteNIT( p_session->p_nit );
- #endif
- }
- static int ScanServiceCmp( const void *a, const void *b )
- {
- scan_service_t *sa = *(scan_service_t**)a;
- scan_service_t *sb = *(scan_service_t**)b;
- if( sa->i_channel == sb->i_channel )
- {
- if( sa->psz_name && sb->psz_name )
- return strcmp( sa->psz_name, sb->psz_name );
- return 0;
- }
- if( sa->i_channel == -1 )
- return 1;
- else if( sb->i_channel == -1 )
- return -1;
- if( sa->i_channel < sb->i_channel )
- return -1;
- else if( sa->i_channel > sb->i_channel )
- return 1;
- return 0;
- }
- static block_t *BlockString( const char *psz )
- {
- block_t *p = block_Alloc( strlen(psz) );
- if( p )
- memcpy( p->p_buffer, psz, p->i_buffer );
- return p;
- }
- block_t *scan_GetM3U( scan_t *p_scan )
- {
- vlc_object_t *p_obj = p_scan->p_obj;
- block_t *p_playlist = NULL;
- if( p_scan->i_service <= 0 )
- return NULL;
- /* */
- qsort( p_scan->pp_service, p_scan->i_service, sizeof(scan_service_t*), ScanServiceCmp );
- /* */
- p_playlist = BlockString( "#EXTM3Unn" );/* */
- for( int i = 0; i < p_scan->i_service; i++ )
- {
- scan_service_t *s = p_scan->pp_service[i];
- if( s->type == SERVICE_UNKNOWN )
- {
- /* We should only select service that have been described by SDT */
- msg_Dbg( p_obj, "scan_GetM3U: ignoring service number %d", s->i_program );
- continue;
- }
- const char *psz_type;
- switch( s->type )
- {
- case SERVICE_DIGITAL_TELEVISION: psz_type = "Digital television"; break;
- case SERVICE_DIGITAL_TELEVISION_AC_SD: psz_type = "Digital television advanced codec SD"; break;
- case SERVICE_DIGITAL_TELEVISION_AC_HD: psz_type = "Digital television advanced codec HD"; break;
- case SERVICE_DIGITAL_RADIO: psz_type = "Digital radio"; break;
- default:
- psz_type = "Unknown";
- break;
- }
- msg_Warn( p_obj, "scan_GetM3U: service number %d type '%s' name '%s' channel %d cypted=%d| network_id %d (nit:%d sdt:%d)| f=%d bw=%d snr=%d",
- s->i_program, psz_type, s->psz_name, s->i_channel, s->b_crypted,
- s->i_network_id, s->i_nit_version, s->i_sdt_version,
- s->cfg.i_frequency, s->cfg.i_bandwidth, s->i_snr );
- char *psz;
- if( asprintf( &psz, "#EXTINF:,,%sn"
- "#EXTVLCOPT:program=%dn"
- "dvb://frequency=%d:bandwidth=%dn"
- "n",
- s->psz_name && * s->psz_name ? s->psz_name : "Unknown",
- s->i_program,
- s->cfg.i_frequency, s->cfg.i_bandwidth ) < 0 )
- psz = NULL;
- if( psz )
- {
- block_t *p_block = BlockString( psz );
- if( p_block )
- block_ChainAppend( &p_playlist, p_block );
- }
- }
- return p_playlist ? block_ChainGather( p_playlist ) : NULL;
- }
- bool scan_session_Push( scan_session_t *p_scan, block_t *p_block )
- {
- if( p_block->i_buffer < 188 || p_block->p_buffer[0] != 0x47 )
- {
- block_Release( p_block );
- return false;
- }
- /* */
- const int i_pid = ( (p_block->p_buffer[1]&0x1f)<<8) | p_block->p_buffer[2];
- if( i_pid == 0x00 )
- {
- if( !p_scan->pat )
- p_scan->pat = dvbpsi_AttachPAT( (dvbpsi_pat_callback)PATCallBack, p_scan );
- if( p_scan->pat )
- dvbpsi_PushPacket( p_scan->pat, p_block->p_buffer );
- }
- else if( i_pid == 0x11 )
- {
- if( !p_scan->sdt )
- p_scan->sdt = dvbpsi_AttachDemux( (dvbpsi_demux_new_cb_t)PSINewTableCallBack, p_scan );
- if( p_scan->sdt )
- dvbpsi_PushPacket( p_scan->sdt, p_block->p_buffer );
- }
- else if( i_pid == p_scan->i_nit_pid )
- {
- #ifdef DVBPSI_USE_NIT
- if( !p_scan->nit )
- p_scan->nit = dvbpsi_AttachDemux( (dvbpsi_demux_new_cb_t)PSINewTableCallBack, p_scan );
- if( p_scan->nit )
- dvbpsi_PushPacket( p_scan->nit, p_block->p_buffer );
- #endif
- }
- block_Release( p_block );
- return p_scan->p_pat && p_scan->p_sdt &&
- #ifdef DVBPSI_USE_NIT
- p_scan->p_nit;
- #else
- true;
- #endif
- }
- void scan_service_SetSNR( scan_session_t *p_session, int i_snr )
- {
- p_session->i_snr = i_snr;
- }