1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/branches/gmyth-0.1b/src/gmyth_epg.c Wed Feb 14 21:28:49 2007 +0000
1.3 @@ -0,0 +1,299 @@
1.4 +/**
1.5 + * GMyth Library
1.6 + *
1.7 + * @file gmyth/gmyth_epg.c
1.8 + *
1.9 + * @brief <p> GMythEPG class provides access to the program and channel data
1.10 + * from the Electronic Program Guide (EPG) of the Mythtv backend.
1.11 + *
1.12 + * Copyright (C) 2006 INdT - Instituto Nokia de Tecnologia.
1.13 + * @author Leonardo Sobral Cunha <leonardo.cunha@indt.org.br>
1.14 + *
1.15 + *//*
1.16 + *
1.17 + * This program is free software; you can redistribute it and/or modify
1.18 + * it under the terms of the GNU Lesser General Public License as published by
1.19 + * the Free Software Foundation; either version 2 of the License, or
1.20 + * (at your option) any later version.
1.21 + *
1.22 + * This program is distributed in the hope that it will be useful,
1.23 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.24 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.25 + * GNU General Public License for more details.
1.26 + *
1.27 + * You should have received a copy of the GNU Lesser General Public License
1.28 + * along with this program; if not, write to the Free Software
1.29 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1.30 + */
1.31 +
1.32 +#ifdef HAVE_CONFIG_H
1.33 +#include "config.h"
1.34 +#endif
1.35 +
1.36 +#include <mysql/mysql.h>
1.37 +#include <stdlib.h>
1.38 +#include <string.h>
1.39 +#include <assert.h>
1.40 +
1.41 +#include "gmyth_epg.h"
1.42 +#include "gmyth_programinfo.h"
1.43 +#include "gmyth_util.h"
1.44 +#include "gmyth_debug.h"
1.45 +
1.46 +static void gmyth_epg_class_init (GMythEPGClass *klass);
1.47 +static void gmyth_epg_init (GMythEPG *object);
1.48 +
1.49 +static void gmyth_epg_dispose (GObject *object);
1.50 +static void gmyth_epg_finalize (GObject *object);
1.51 +
1.52 +G_DEFINE_TYPE(GMythEPG, gmyth_epg, G_TYPE_OBJECT)
1.53 +
1.54 +static void
1.55 +gmyth_epg_class_init (GMythEPGClass *klass)
1.56 +{
1.57 + GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
1.58 +
1.59 + gobject_class->dispose = gmyth_epg_dispose;
1.60 + gobject_class->finalize = gmyth_epg_finalize;
1.61 +}
1.62 +
1.63 +static void
1.64 +gmyth_epg_init (GMythEPG *gmyth_epg)
1.65 +{
1.66 +
1.67 +}
1.68 +
1.69 +static void
1.70 +gmyth_epg_dispose (GObject *object)
1.71 +{
1.72 + //GMythEPG *gmyth_epg = GMYTH_EPG(object);
1.73 +
1.74 + G_OBJECT_CLASS (gmyth_epg_parent_class)->dispose (object);
1.75 +}
1.76 +
1.77 +static void
1.78 +gmyth_epg_finalize (GObject *object)
1.79 +{
1.80 + g_signal_handlers_destroy (object);
1.81 +
1.82 + G_OBJECT_CLASS (gmyth_epg_parent_class)->finalize (object);
1.83 +}
1.84 +
1.85 +/**
1.86 + * Creates a new instance of GMythEPG.
1.87 + *
1.88 + * @return a new instance of GMythEPG.
1.89 + */
1.90 +GMythEPG*
1.91 +gmyth_epg_new (void)
1.92 +{
1.93 + GMythEPG *epg = GMYTH_EPG (g_object_new(GMYTH_EPG_TYPE, NULL));
1.94 +
1.95 + return epg;
1.96 +}
1.97 +
1.98 +/** Connects to the Mysql database in the backend. The backend address
1.99 + * is loaded from the GMythSettings instance.
1.100 + *
1.101 + * @param gmyth_epg the GMythEPG instance to be connected.
1.102 + * @return true if connection was success, false if failed.
1.103 + */
1.104 +gboolean
1.105 +gmyth_epg_connect (GMythEPG *gmyth_epg, GMythBackendInfo *backend_info)
1.106 +{
1.107 + assert(gmyth_epg);
1.108 +
1.109 + if (gmyth_epg->sqlquery == NULL) {
1.110 + gmyth_debug ("[%s] Creating gmyth_query", __FUNCTION__);
1.111 + gmyth_epg->sqlquery = gmyth_query_new ( );
1.112 + }
1.113 +
1.114 + if (!gmyth_query_connect(gmyth_epg->sqlquery, backend_info)) {
1.115 + g_warning ("[%s] Error while connecting to db", __FUNCTION__);
1.116 + return FALSE;
1.117 + }
1.118 +
1.119 + return TRUE;
1.120 +}
1.121 +
1.122 +/** Disconnects from the Mysql database in the backend.
1.123 + *
1.124 + * @param gmyth_epg the GMythEPG instance to be disconnected
1.125 + * @return true if disconnection was success, false if failed.
1.126 + */
1.127 +gboolean
1.128 +gmyth_epg_disconnect (GMythEPG *gmyth_epg)
1.129 +{
1.130 + assert(gmyth_epg);
1.131 +
1.132 + if (gmyth_epg->sqlquery != NULL) {
1.133 + g_object_unref (gmyth_epg->sqlquery);
1.134 + gmyth_epg->sqlquery = NULL;
1.135 + }
1.136 +
1.137 + return TRUE;
1.138 +}
1.139 +
1.140 +/** Retrieves the available list of channels from the backend Mysql database.
1.141 + *
1.142 + * @param gmyth_epg the GMythEPG instance.
1.143 + * @param glist_ptr the GList pointer to be filled with the loaded list address.
1.144 + * @return The amount of channels retrieved from database, or -1 if error.
1.145 + */
1.146 +gint
1.147 +gmyth_epg_get_channel_list (GMythEPG *gmyth_epg, GList **glist_ptr)
1.148 +{
1.149 + MYSQL_RES *msql_res;
1.150 +
1.151 + assert(gmyth_epg);
1.152 +
1.153 + msql_res = gmyth_query_process_statement (gmyth_epg->sqlquery,
1.154 + "SELECT chanid, channum, name FROM channel;");
1.155 +
1.156 + (*glist_ptr) = NULL;
1.157 +
1.158 + if (msql_res == NULL) {
1.159 + g_warning ("[%s] msql query returned NULL MYSQL_RES", __FUNCTION__);
1.160 + return -1;
1.161 + } else {
1.162 + MYSQL_ROW row;
1.163 + GMythChannelInfo *channel_info;
1.164 +
1.165 + while ((row = mysql_fetch_row (msql_res)) != NULL){
1.166 +
1.167 + channel_info = g_new0(GMythChannelInfo, 1);
1.168 + channel_info->channel_ID = g_ascii_strtoull (row[0], NULL, 10);
1.169 + channel_info->channel_num = g_string_new (row[1]);
1.170 + channel_info->channel_name = g_string_new (row[2]);
1.171 +
1.172 + gmyth_channel_info_print(channel_info);
1.173 +
1.174 + (*glist_ptr) = g_list_append ((*glist_ptr), channel_info);
1.175 + }
1.176 + }
1.177 + mysql_free_result (msql_res);
1.178 + return (!(*glist_ptr)) ? 0 : g_list_length (*glist_ptr);
1.179 +}
1.180 +
1.181 +/**
1.182 + * Retrieves the available list of channels from the backend Mysql database.
1.183 + *
1.184 + * @param gmyth_epg the GMythEPG instance.
1.185 + * @param proglist the GList pointer to be filled with the loaded list.
1.186 + * @param chan_num the channel num on which to search for program.
1.187 + * @param starttime the start time to search for programs.
1.188 + * @param endtime the end time to search for programs.
1.189 + * @return The amount of channels retrieved from database, or -1 if error.
1.190 + */
1.191 +gint
1.192 +gmyth_epg_get_program_list (GMythEPG *gmyth_epg, GList **proglist,
1.193 + const gint chan_num, GTimeVal *starttime, GTimeVal *endtime)
1.194 +{
1.195 +
1.196 + gchar *startts = gmyth_util_time_to_string_from_time_val(starttime);
1.197 + gchar *endts = gmyth_util_time_to_string_from_time_val(endtime);
1.198 + MYSQL_ROW row;
1.199 + GString *querystr;
1.200 +
1.201 + assert(gmyth_epg);
1.202 +
1.203 + querystr = g_string_new(
1.204 + "SELECT DISTINCT program.chanid, program.starttime, program.endtime, "
1.205 + " program.title, program.subtitle, program.description, "
1.206 + " program.category, channel.channum, channel.callsign, "
1.207 + " channel.name, program.previouslyshown, channel.commfree, "
1.208 + " channel.outputfilters, program.seriesid, program.programid, "
1.209 + " program.airdate, program.stars, program.originalairdate, "
1.210 + " program.category_type, oldrecstatus.recordid, "
1.211 + " oldrecstatus.rectype, oldrecstatus.recstatus, "
1.212 + " oldrecstatus.findid "
1.213 + "FROM program "
1.214 + "LEFT JOIN channel ON program.chanid = channel.chanid "
1.215 + "LEFT JOIN oldrecorded AS oldrecstatus ON "
1.216 + " program.title = oldrecstatus.title AND "
1.217 + " channel.callsign = oldrecstatus.station AND "
1.218 + " program.starttime = oldrecstatus.starttime "
1.219 + );
1.220 +
1.221 + g_string_append_printf (querystr,
1.222 + "WHERE program.chanid = %d "
1.223 + " AND program.endtime >= '%s' "
1.224 + " AND program.starttime <= '%s' "
1.225 + " AND program.manualid = 0 ",
1.226 + chan_num, startts, endts);
1.227 +
1.228 + if (!g_strrstr(querystr->str, " GROUP BY "))
1.229 + querystr = g_string_append(querystr,
1.230 + " GROUP BY program.starttime, channel.channum, "
1.231 + " channel.callsign, program.title ");
1.232 +
1.233 + if (!g_strrstr(querystr->str, " LIMIT "))
1.234 + querystr = g_string_append(querystr, " LIMIT 1000 ");
1.235 +
1.236 + MYSQL_RES *res_set =
1.237 + gmyth_query_process_statement(gmyth_epg->sqlquery, querystr->str);
1.238 +
1.239 + if (res_set == NULL) {
1.240 + g_warning ("[%s] msql query returned NULL MYSQL_RES", __FUNCTION__);
1.241 + return -1;
1.242 + }
1.243 +
1.244 + (*proglist) = NULL;
1.245 + while ((row = mysql_fetch_row (res_set)) != NULL) {
1.246 +
1.247 + GMythProgramInfo *p = gmyth_program_info_new ();
1.248 + p->chanid = g_string_new (row[0]);
1.249 +
1.250 + p->startts = gmyth_util_string_to_time_val (row[1]);
1.251 + p->endts = gmyth_util_string_to_time_val (row[2]);
1.252 +
1.253 + p->recstartts = g_new0 (GTimeVal, 1);
1.254 + p->recstartts->tv_sec = p->startts->tv_sec;
1.255 + p->recstartts->tv_usec = p->startts->tv_usec;
1.256 +
1.257 + p->recendts = g_new0 (GTimeVal, 1);
1.258 + p->recendts->tv_sec = p->endts->tv_sec;
1.259 + p->recendts->tv_usec = p->endts->tv_usec;
1.260 +
1.261 + p->lastmodified = g_new0 (GTimeVal, 1);
1.262 + p->lastmodified->tv_sec = p->startts->tv_sec;
1.263 + p->lastmodified->tv_usec = p->startts->tv_usec;
1.264 +
1.265 + p->title = g_string_new (row[3]);
1.266 + p->subtitle = g_string_new (row[4]);
1.267 + p->description = g_string_new (row[5]);
1.268 + p->category = g_string_new (row[6]);
1.269 + p->chanstr = g_string_new (row[7]);
1.270 + p->chansign = g_string_new (row[8]);
1.271 + p->channame = g_string_new (row[9]);
1.272 + p->repeat = g_ascii_strtoull(row[10], NULL, 10);
1.273 + p->chancommfree = g_ascii_strtoull(row[11], NULL, 10);
1.274 + p->chanOutputFilters = g_string_new (row[12]);
1.275 + p->seriesid = g_string_new (row[13]);
1.276 + p->programid = g_string_new (row[14]);
1.277 + p->year = g_string_new (row[15]);
1.278 + p->stars = g_ascii_strtod(row[16], NULL);
1.279 +
1.280 + if (!row[17] || !strcmp(row[17], "")) {
1.281 + p->originalAirDate = 0;
1.282 + p->hasAirDate = FALSE;
1.283 + } else {
1.284 + p->originalAirDate = gmyth_util_string_to_time_val (row[17]);
1.285 + p->hasAirDate = TRUE;
1.286 + }
1.287 +
1.288 + p->catType = g_string_new (row[18]);
1.289 +
1.290 + *proglist = g_list_append((*proglist), p);
1.291 +
1.292 +#if 0
1.293 + gmyth_program_info_print(p);
1.294 +#endif
1.295 + }
1.296 +
1.297 + /* deallocate */
1.298 + mysql_free_result (res_set);
1.299 + g_string_free(querystr, TRUE);
1.300 +
1.301 + return TRUE;
1.302 +}