/***************************************************************************** * dvb.c : DVB channel list import (szap/tzap/czap compatible channel lists) ***************************************************************************** * Copyright (C) 2005 the VideoLAN team * $Id: dvb.c 14377 2006-02-18 20:34:32Z courmisch $ * * Authors: Gildas Bazin <gbazin@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 *****************************************************************************/#include <stdlib.h>                                      /* malloc(), free() */#include <vlc/vlc.h>#include <vlc/input.h>#include <vlc/intf.h>#include "charset.h"#include "playlist.h"#ifndef LONG_MAX#   define LONG_MAX 2147483647L#   define LONG_MIN (-LONG_MAX-1)#endif/***************************************************************************** * Local prototypes *****************************************************************************/static int Demux( demux_t *p_demux);static int Control( demux_t *p_demux, int i_query, va_list args );static int ParseLine( char *, char **, char ***, int *);/***************************************************************************** * Import_DVB: main import function *****************************************************************************/int E_(Import_DVB)( vlc_object_t *p_this ){    demux_t *p_demux = (demux_t *)p_this;    uint8_t *p_peek;    int     i_peek;    char    *psz_ext;    vlc_bool_t b_valid = VLC_FALSE;    psz_ext = strrchr ( p_demux->psz_path, '.' );    if( !( psz_ext && !strncasecmp( psz_ext, ".conf", 5 ) ) &&        !p_demux->b_force ) return VLC_EGENERIC;    /* Check if this really is a channels file */    if( (i_peek = stream_Peek( p_demux->s, &p_peek, 1024 )) > 0 )    {        char psz_line[1024+1];        int i;        for( i = 0; i < i_peek; i++ )        {            if( p_peek[i] == '\n' ) break;            psz_line[i] = p_peek[i];        }        psz_line[i] = 0;        if( ParseLine( psz_line, 0, 0, 0 ) ) b_valid = VLC_TRUE;    }    if( !b_valid ) return VLC_EGENERIC;    msg_Dbg( p_demux, "found valid DVB conf playlist file");    p_demux->pf_control = Control;    p_demux->pf_demux = Demux;    return VLC_SUCCESS;}/***************************************************************************** * Deactivate: frees unused data *****************************************************************************/void E_(Close_DVB)( vlc_object_t *p_this ){}/***************************************************************************** * Demux: The important stuff *****************************************************************************/static int Demux( demux_t *p_demux ){    playlist_t *p_playlist;    char       *psz_line;    playlist_item_t *p_current;    vlc_bool_t b_play;    p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,                                                 FIND_ANYWHERE );    if( !p_playlist )    {        msg_Err( p_demux, "can't find playlist" );        return -1;    }    b_play = E_(FindItem)( p_demux, p_playlist, &p_current );    playlist_ItemToNode( p_playlist, p_current );    p_current->input.i_type = ITEM_TYPE_PLAYLIST;    while( (psz_line = stream_ReadLine( p_demux->s )) )    {        playlist_item_t *p_item;        char **ppsz_options = NULL;        int  i, i_options = 0;        char *psz_name = NULL;        if( !ParseLine( psz_line, &psz_name, &ppsz_options, &i_options ) )        {            free( psz_line );            continue;        }        EnsureUTF8( psz_name );        p_item = playlist_ItemNew( p_playlist, "dvb:", psz_name );        for( i = 0; i< i_options; i++ )        {            EnsureUTF8( ppsz_options[i] );            playlist_ItemAddOption( p_item, ppsz_options[i] );        }        playlist_NodeAddItem( p_playlist, p_item,                              p_current->pp_parents[0]->i_view,                              p_current, PLAYLIST_APPEND, PLAYLIST_END );        /* We need to declare the parents of the node as the         *                  * same of the parent's ones */        playlist_CopyParents( p_current, p_item );        vlc_input_item_CopyOptions( &p_current->input, &p_item->input );        while( i_options-- ) free( ppsz_options[i_options] );        if( ppsz_options ) free( ppsz_options );        free( psz_line );    }    /* Go back and play the playlist */    if( b_play && p_playlist->status.p_item &&        p_playlist->status.p_item->i_children > 0 )    {        playlist_Control( p_playlist, PLAYLIST_VIEWPLAY,                          p_playlist->status.i_view,                          p_playlist->status.p_item,                          p_playlist->status.p_item->pp_children[0] );    }    vlc_object_release( p_playlist );    return VLC_SUCCESS;}static struct{    char *psz_name;    char *psz_option;} dvb_options[] ={    { "INVERSION_OFF", "dvb-inversion=0" },    { "INVERSION_ON", "dvb-inversion=1" },    { "INVERSION_AUTO", "dvb-inversion=2" },    { "BANDWIDTH_AUTO", "dvb-bandwidth=0" },    { "BANDWIDTH_6_MHZ", "dvb-bandwidth=6" },    { "BANDWIDTH_7_MHZ", "dvb-bandwidth=7" },    { "BANDWIDTH_8_MHZ", "dvb-bandwidth=8" },    { "FEC_NONE", "dvb-fec=0" },    { "FEC_1_2", "dvb-fec=1" },    { "FEC_2_3", "dvb-fec=2" },    { "FEC_3_4", "dvb-fec=3" },    { "FEC_4_5", "dvb-fec=4" },    { "FEC_5_6", "dvb-fec=5" },    { "FEC_6_7", "dvb-fec=6" },    { "FEC_7_8", "dvb-fec=7" },    { "FEC_8_9", "dvb-fec=8" },    { "FEC_AUTO", "dvb-fec=9" },    { "GUARD_INTERVAL_AUTO", "dvb-guard=0" },    { "GUARD_INTERVAL_1_4", "dvb-guard=4" },    { "GUARD_INTERVAL_1_8", "dvb-guard=8" },    { "GUARD_INTERVAL_1_16", "dvb-guard=16" },    { "GUARD_INTERVAL_1_32", "dvb-guard=32" },    { "HIERARCHY_NONE", "dvb-hierarchy=-1" },    { "HIERARCHY_1", "dvb-hierarchy=1" },    { "HIERARCHY_2", "dvb-hierarchy=2" },    { "HIERARCHY_4", "dvb-hierarchy=4" },    { "QPSK", "dvb-modulation=-1" },    { "QAM_AUTO", "dvb-modulation=0" },    { "QAM_16", "dvb-modulation=16" },    { "QAM_32", "dvb-modulation=32" },    { "QAM_64", "dvb-modulation=64" },    { "QAM_128", "dvb-modulation=128" },    { "QAM_256", "dvb-modulation=256" },    { "TRANSMISSION_MODE_AUTO", "dvb-transmission=0" },    { "TRANSMISSION_MODE_2K", "dvb-transmission=2" },    { "TRANSMISSION_MODE_8K", "dvb-transmission=8" },    { 0, 0 }};static int ParseLine( char *psz_line, char **ppsz_name,                      char ***pppsz_options, int *pi_options ){    char *psz_name = 0, *psz_parse = psz_line;    int i_count = 0, i_program = 0, i_frequency = 0;    vlc_bool_t b_valid = VLC_FALSE;    if( pppsz_options ) *pppsz_options = 0;    if( pi_options ) *pi_options = 0;    if( ppsz_name ) *ppsz_name = 0;    /* Skip leading tabs and spaces */    while( *psz_parse == ' ' || *psz_parse == '\t' ||           *psz_parse == '\n' || *psz_parse == '\r' ) psz_parse++;    /* Ignore comments */    if( *psz_parse == '#' ) return VLC_FALSE;    while( psz_parse )    {        char *psz_option = 0;        char *psz_end = strchr( psz_parse, ':' );        if( psz_end ) { *psz_end = 0; psz_end++; }        if( i_count == 0 )        {            /* Channel name */            psz_name = psz_parse;        }        else if( i_count == 1 )        {            /* Frequency */            char *psz_end;            long i_value;            i_value = strtol( psz_parse, &psz_end, 10 );            if( psz_end == psz_parse ||                i_value == LONG_MAX || i_value == LONG_MIN ) break;            i_frequency = i_value;        }        else        {            int i;            /* Check option name with our list */            for( i = 0; dvb_options[i].psz_name; i++ )            {                if( !strcmp( psz_parse, dvb_options[i].psz_name ) )                {                    psz_option = dvb_options[i].psz_option;                    /* If we recognize one of the strings, then we are sure                     * the data is really valid (ie. a channels file). */                    b_valid = VLC_TRUE;                    break;                }            }            if( !psz_option )            {                /* Option not recognized, test if it is a number */                char *psz_end;                long i_value;                i_value = strtol( psz_parse, &psz_end, 10 );                if( psz_end != psz_parse &&                    i_value != LONG_MAX && i_value != LONG_MIN )                {                    i_program = i_value;                }            }        }        if( psz_option && pppsz_options && pi_options )        {            psz_option = strdup( psz_option );            INSERT_ELEM( *pppsz_options, (*pi_options), (*pi_options),                         psz_option );        }        psz_parse = psz_end;        i_count++;    }    if( !b_valid && pppsz_options && pi_options )    {        /* This isn't a valid channels file, cleanup everything */        while( (*pi_options)-- ) free( (*pppsz_options)[*pi_options] );        if( *pppsz_options ) free( *pppsz_options );        *pppsz_options = 0; *pi_options = 0;    }    if( i_program && pppsz_options && pi_options )    {        char *psz_option;        asprintf( &psz_option, "program=%i", i_program );        INSERT_ELEM( *pppsz_options, (*pi_options), (*pi_options),                     psz_option );    }    if( i_frequency && pppsz_options && pi_options )    {        char *psz_option;        asprintf( &psz_option, "dvb-frequency=%i", i_frequency );        INSERT_ELEM( *pppsz_options, (*pi_options), (*pi_options),                     psz_option );    }    if( ppsz_name && psz_name ) *ppsz_name = strdup( psz_name );    return b_valid;}static int Control( demux_t *p_demux, int i_query, va_list args ){    return VLC_EGENERIC;}