diff -r 000000000000 -r 28c358053693 branches/gmyth-0.1b/src/gmyth_tvchain.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/branches/gmyth-0.1b/src/gmyth_tvchain.c Wed Feb 14 23:06:17 2007 +0000 @@ -0,0 +1,390 @@ +/** + * GMyth Library + * + * @file gmyth/gmyth_tvchain.c + * + * @brief

This component contains functions for creating and accessing + * the tvchain functions for live tv playback. + * + * Copyright (C) 2006 INdT - Instituto Nokia de Tecnologia. + * @author Hallyson Luiz de Morais Melo + * + *//* + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser 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 Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gmyth_tvchain.h" + +#include +#include +#include +#include +#include + +#include "gmyth_epg.h" +#include "gmyth_util.h" +#include "gmyth_query.h" +#include "gmyth_scheduler.h" +#include "gmyth_debug.h" + +static void gmyth_tvchain_class_init (GMythTVChainClass *klass); +static void gmyth_tvchain_init (GMythTVChain *object); + +static void gmyth_tvchain_dispose (GObject *object); +static void gmyth_tvchain_finalize (GObject *object); + +G_DEFINE_TYPE(GMythTVChain, gmyth_tvchain, G_TYPE_OBJECT) + +static GStaticMutex mutex = G_STATIC_MUTEX_INIT; + +static void +gmyth_tvchain_class_init (GMythTVChainClass *klass) +{ + GObjectClass *gobject_class; + + gobject_class = (GObjectClass *) klass; + + gobject_class->dispose = gmyth_tvchain_dispose; + gobject_class->finalize = gmyth_tvchain_finalize; +} + +static void +gmyth_tvchain_init (GMythTVChain *tvchain) +{ + tvchain->tvchain_id = NULL; + + tvchain->cur_chanid = g_string_new (""); + tvchain->cur_startts = NULL; +} + +static void +gmyth_tvchain_dispose (GObject *object) +{ + GMythTVChain *tvchain = GMYTH_TVCHAIN(object); + + if ( tvchain->tvchain_id != NULL ) { + g_string_free( tvchain->tvchain_id, TRUE ); + tvchain->tvchain_id = NULL; + } + + if ( tvchain->tvchain_list != NULL ) { + g_list_free( tvchain->tvchain_list ); + tvchain->tvchain_list = NULL; + } + + if ( tvchain->cur_chanid != NULL ) { + g_string_free( tvchain->cur_chanid, TRUE ); + tvchain->cur_chanid = NULL; + } + + if ( tvchain->backend_info) { + g_object_unref (tvchain->backend_info); + tvchain->backend_info = NULL; + } + + + G_OBJECT_CLASS (gmyth_tvchain_parent_class)->dispose (object); +} + +static void +gmyth_tvchain_finalize (GObject *object) +{ + g_signal_handlers_destroy (object); + + G_OBJECT_CLASS (gmyth_tvchain_parent_class)->finalize (object); +} + +/** Initializes the tvchain and generates the tvchain id. + * + * @param tvchain The GMythTVChain instance. + * @param hostname The local hostname used to generate the tvchain id. + */ +gboolean +gmyth_tvchain_initialize (GMythTVChain *tvchain, GMythBackendInfo *backend_info) +{ + const char *hostname; + + assert (tvchain); + g_return_val_if_fail (backend_info != NULL, FALSE); + + g_object_ref (backend_info); + tvchain->backend_info = backend_info; + + hostname = gmyth_backend_info_get_hostname (backend_info); + + if (tvchain->tvchain_id == NULL) { + gchar *isodate = NULL; + GTimeVal *cur_time = g_new0( GTimeVal, 1 ); + //struct tm* gmyth_util_time_val_to_date ( const GTimeVal* time ) + + g_get_current_time(cur_time); + isodate = gmyth_util_time_to_isoformat_from_time_val_fmt ( "%Y-%m-%dT%H:%M:%S", cur_time ); + + tvchain->tvchain_id = g_string_sized_new (7 + strlen (hostname) + strlen(isodate)); + g_string_printf(tvchain->tvchain_id, + "live-%s-%s", hostname, isodate); + + gmyth_debug ("[%s] tv_chain_id: %s", __FUNCTION__, tvchain->tvchain_id->str); + + if (isodate) + g_free(isodate); + + if ( cur_time ) + g_free( cur_time ); + } else { + g_warning ("[%s] TVchain already initialized", __FUNCTION__); + } + + return TRUE; +} + +/** Gets the tvchain id. + * + * @param tvchain The GMythTVChain instance. + * @return The tvchain id. + */ +GString* +gmyth_tvchain_get_id (GMythTVChain *tvchain) +{ + g_return_val_if_fail( tvchain != NULL && tvchain->tvchain_id != NULL, NULL ); + + return g_string_new (tvchain->tvchain_id->str); +} + +/** Reloads all tvchain entries in the database. + * + * @param tvchain The GMythTVChain instance. + * @return TRUE if success, or FALSE if error. + */ +gboolean +gmyth_tvchain_reload_all (GMythTVChain *tvchain) +{ + MYSQL_ROW msql_row; + MYSQL_RES *msql_res = NULL; + GMythQuery *gmyth_query = NULL; + gboolean ret = TRUE; + GString *stmt_str = NULL; + + g_static_mutex_lock( &mutex ); + + /* gets the initial size of the TVChain entries list */ + guint prev_size = g_list_length (tvchain->tvchain_list); + + gmyth_debug ("[%s] chainid: %s", __FUNCTION__, tvchain->tvchain_id->str); + + if ( tvchain != NULL && tvchain->tvchain_list != NULL ) { + g_list_free (tvchain->tvchain_list); + tvchain->tvchain_list = NULL; + } + + // TODO: Reuse gmyth_query already connected from context + gmyth_query = gmyth_query_new (); + if (!gmyth_query_connect (gmyth_query, tvchain->backend_info)) { + g_warning ("[%s] Could not connect to db", __FUNCTION__); + g_static_mutex_unlock( &mutex ); + ret = FALSE; + goto done; + } + + stmt_str = g_string_new (""); + g_string_printf (stmt_str, + "SELECT chanid, starttime, endtime, discontinuity, " + "chainpos, hostprefix, cardtype, channame, input " + "FROM tvchain " + "WHERE chainid = \"%s\" ORDER BY chainpos;", + tvchain->tvchain_id->str); + + msql_res = gmyth_query_process_statement(gmyth_query, stmt_str->str); + if (msql_res != NULL) { + + while ((msql_row = mysql_fetch_row (msql_res)) != NULL) { + struct LiveTVChainEntry *entry = g_new0 (struct LiveTVChainEntry, 1); + entry->chanid = g_string_new (msql_row[0]); + entry->starttime = gmyth_util_string_to_time_val ((const gchar*) msql_row[1]); + entry->endtime = gmyth_util_string_to_time_val ((const gchar*) msql_row[2]); + entry->discontinuity = g_ascii_strtoull (msql_row[3], NULL, 10 ) != 0; + entry->hostprefix = g_string_new (msql_row[5]); + entry->cardtype = g_string_new (msql_row[6]); + entry->channum = g_string_new (msql_row[7]); + entry->inputname = g_string_new (msql_row[8]); + + //m_maxpos = query.value(4).toInt() + 1; + g_print( "[%s] Reading TV chain entry (channel %s): [%s, %s, %s]\n", __FUNCTION__, entry->channum->str, entry->chanid->str, + (gchar*)msql_row[1], (gchar*)msql_row[2] ); + + /* add this to get the actual start timestamp of the last recording */ + if ( tvchain->cur_startts < entry->starttime ) + tvchain->cur_startts = entry->starttime; + + tvchain->tvchain_list = g_list_append (tvchain->tvchain_list, entry); + } + } else { + g_warning ("gmyth_tvchain_reload_all query error!\n"); + g_static_mutex_unlock( &mutex ); + + ret = FALSE; + goto done; + } + + g_static_mutex_unlock( &mutex ); + + tvchain->cur_pos = gmyth_tvchain_program_is_at (tvchain, tvchain->cur_chanid, tvchain->cur_startts); + g_print( "[%s] TVChain current position = %d.\n", __FUNCTION__, tvchain->cur_pos ); + + if (tvchain->cur_pos < 0) + tvchain->cur_pos = 0; + + // if (m_switchid >= 0) + // m_switchid = ProgramIsAt(m_switchentry.chanid,m_switchentry.starttime); + + if (prev_size != g_list_length (tvchain->tvchain_list)) { + gmyth_debug ("[%s] Added new recording", __FUNCTION__); + } + +done: + if ( stmt_str != NULL ) + g_string_free (stmt_str, TRUE); + + if ( msql_res != NULL ) + mysql_free_result (msql_res); + + if ( gmyth_query != NULL ) + g_object_unref (gmyth_query); + + return ret; +} + +/** Returns the internal index for the TV chain related to the given + * channel and start time. + * + * @param tvchain The GMythTVChain instance. + * @param chanid The channel id. + * @param startts The program start time. + */ +gint +gmyth_tvchain_program_is_at (GMythTVChain *tvchain, GString *chanid, GTimeVal* startts) +{ + gint count = 0; + struct LiveTVChainEntry *entry; + GList *tmp_list = tvchain->tvchain_list; + guint list_size = g_list_length (tvchain->tvchain_list); + + g_static_mutex_lock( &mutex ); + + for (; tmp_list && ( count < list_size ); tmp_list = tvchain->tvchain_list->next, count++) + { + entry = (struct LiveTVChainEntry*) tmp_list->data; + if ( !g_strncasecmp (entry->chanid->str, chanid->str, chanid->len) + && entry->starttime == startts ) + { + g_static_mutex_unlock( &mutex ); + return count; + } + } + g_static_mutex_unlock( &mutex ); + + return -1; +} + +/** Get the program info associated to the tvchain. + * + * @param tvchain The GMythTVChain instance. + * @param index The tvchain index. + * @return The program info structure. + */ +GMythProgramInfo* +gmyth_tvchain_get_program_at (GMythTVChain *tvchain, gint index) +{ + struct LiveTVChainEntry *entry; + + entry = gmyth_tvchain_get_entry_at (tvchain, index); + + if (entry) + return gmyth_tvchain_entry_to_program (tvchain, entry); + + return NULL; +} + +/** Gets a LiveTVChainEntry associated to the tvchain by its index. + * + * @param tvchain The GMythTVChain instance. + * @param index The tvchain entry index + * @return The LiveTVchainEntry structure. + */ +struct LiveTVChainEntry* +gmyth_tvchain_get_entry_at (GMythTVChain *tvchain, gint index) +{ + struct LiveTVChainEntry* chain_entry = NULL; + + g_return_val_if_fail( tvchain != NULL && tvchain->tvchain_list != NULL, NULL ); + + g_static_mutex_lock( &mutex ); + + gint size = g_list_length (tvchain->tvchain_list); + gint new_index = (index < 0 || index >= size) ? size - 1 : index; + + if (new_index >= 0) + chain_entry = (struct LiveTVChainEntry*) g_list_nth_data (tvchain->tvchain_list, new_index); + + g_static_mutex_unlock( &mutex ); + + if ( chain_entry != NULL ) { + gmyth_debug ("[%s] Got TV Chain entry at %d.\n", __FUNCTION__, new_index ); + + } else { + g_warning ("[%s] failed to get entry at index %d", __FUNCTION__, index); + } + + return chain_entry; +} + +/** Gets the program info from backend database associated to the tv chain entry. + * + * @param tvchain The GMythTVChain instance. + * @param entry the LiveTVChainEntry to be converted. + * @return The progrma info. + */ +GMythProgramInfo* +gmyth_tvchain_entry_to_program (GMythTVChain *tvchain, struct LiveTVChainEntry *entry) +{ + GMythProgramInfo *proginfo = NULL; + + g_return_val_if_fail( tvchain != NULL, NULL ); + + if ( !entry || !tvchain ) { + g_warning ("gmyth_tvchain_entry_to_program() received NULL argument"); + return NULL; + } + + GMythScheduler *scheduler = gmyth_scheduler_new (); + + gmyth_scheduler_connect( scheduler, tvchain->backend_info ); + proginfo = gmyth_scheduler_get_recorded (scheduler, + entry->chanid, entry->starttime); + gmyth_scheduler_disconnect( scheduler ); + + if (proginfo) { + proginfo->pathname = g_string_prepend (proginfo->pathname, entry->hostprefix->str); + } else { + g_warning ("tvchain_entry_to_program( chan id = %s, starttime = %ld) failed!", entry->chanid->str, entry->starttime->tv_sec); + } + + return proginfo; +}