* modules/demux/playlist/dvb.c: playlist import for szap/tzap/czap compatible DVB channel lists.

modules/demux/playlist/Modules.am

@@ -3,4 +3,5 @@ SOURCES_playlist = playlist.c \
 		   old.c \
 		   m3u.c \
                    b4s.c \
-		   pls.c
+		   pls.c \
+		   dvb.c

modules/demux/playlist/dvb.c

+/*****************************************************************************
+ * dvb.c : DVB channel list import (szap/tzap/czap compatible channel lists)
+ *****************************************************************************
+ * Copyright (C) 2005 the VideoLAN team
+ * $Id$
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h>                                      /* malloc(), free() */
+
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+#include <vlc/intf.h>
+
+#include "playlist.h"
+
+/*****************************************************************************
+ * 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_PARENT );
+    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;
+}

modules/demux/playlist/playlist.c

@@ -74,6 +74,11 @@ vlc_module_begin();
         add_shortcut( "shout-b4s" );
         set_capability( "demux2", 10 );
         set_callbacks( E_(Import_B4S), E_(Close_B4S) );
+    add_submodule();
+        set_description( _("DVB playlist import") );
+        add_shortcut( "dvb-open" );
+        set_capability( "demux2", 10 );
+        set_callbacks( E_(Import_DVB), E_(Close_DVB) );
 vlc_module_end();
 
 

modules/demux/playlist/playlist.h

@@ -39,3 +39,6 @@ void E_(Close_PLS) ( vlc_object_t * );
 
 int E_(Import_B4S) ( vlc_object_t * );
 void E_(Close_B4S) ( vlc_object_t * );
+
+int E_(Import_DVB) ( vlc_object_t * );
+void E_(Close_DVB) ( vlc_object_t * );