research.m1stereo.tv/gitweb/ - melted/blob - src/melted/melted_commands.c

   1 /*
   2  * melted_commands.c - global commands
   3  * Copyright (C) 2002-2009 Ushodaya Enterprises Limited
   4  * Author: Dan Dennedy <dan@dennedy.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25 #include <sys/stat.h>
  26 #include <sys/poll.h>
  27 #include <fcntl.h>
  28 #include <unistd.h>
  29 #include <dirent.h>
  30 #include <pthread.h>
  31
  32 #include "melted_unit.h"
  33 #include "melted_commands.h"
  34 #include "melted_log.h"
  35
  36 static melted_unit g_units[MAX_UNITS];
  37
  38
  39 /** Return the melted_unit given a numeric index.
  40 */
  41
  42 melted_unit melted_get_unit( int n )
  43 {
  44         if (n < MAX_UNITS)
  45                 return g_units[n];
  46         else
  47                 return NULL;
  48 }
  49
  50 /** Destroy the melted_unit given its numeric index.
  51 */
  52
  53 void melted_delete_unit( int n )
  54 {
  55         if (n < MAX_UNITS)
  56         {
  57                 melted_unit unit = melted_get_unit(n);
  58                 if (unit != NULL)
  59                 {
  60                         melted_unit_close( unit );
  61                         g_units[ n ] = NULL;
  62                         melted_log( LOG_NOTICE, "Deleted unit U%d.", n );
  63                 }
  64         }
  65 }
  66
  67 /** Destroy all allocated units on the server.
  68 */
  69
  70 void melted_delete_all_units( void )
  71 {
  72         int i;
  73         for (i = 0; i < MAX_UNITS; i++)
  74         {
  75                 if ( melted_get_unit(i) != NULL )
  76                 {
  77                         melted_unit_close( melted_get_unit(i) );
  78                         melted_log( LOG_NOTICE, "Deleted unit U%d.", i );
  79                 }
  80         }
  81 }
  82
  83 /** Add a virtual vtr to the server.
  84 */
  85 response_codes melted_add_unit( command_argument cmd_arg )
  86 {
  87         int i = 0;
  88         for ( i = 0; i < MAX_UNITS; i ++ )
  89                 if ( g_units[ i ] == NULL )
  90                         break;
  91
  92         if ( i < MAX_UNITS )
  93         {
  94                 char *arg = cmd_arg->argument;
  95                 g_units[ i ] = melted_unit_init( i, arg );
  96                 if ( g_units[ i ] != NULL )
  97                 {
  98                         melted_unit_set_notifier( g_units[ i ], mvcp_parser_get_notifier( cmd_arg->parser ), cmd_arg->root_dir );
  99                         mvcp_response_printf( cmd_arg->response, 10, "U%1d\n\n", i );
 100                 }
 101                 return g_units[ i ] != NULL ? RESPONSE_SUCCESS_N : RESPONSE_ERROR;
 102         }
 103         mvcp_response_printf( cmd_arg->response, 1024, "no more units can be created\n\n" );
 104
 105         return RESPONSE_ERROR;
 106 }
 107
 108
 109 /** List all AV/C nodes on the bus.
 110 */
 111 response_codes melted_list_nodes( command_argument cmd_arg )
 112 {
 113         response_codes error = RESPONSE_SUCCESS_N;
 114         return error;
 115 }
 116
 117
 118 /** List units already added to server.
 119 */
 120 response_codes melted_list_units( command_argument cmd_arg )
 121 {
 122         response_codes error = RESPONSE_SUCCESS_N;
 123         int i = 0;
 124
 125         for ( i = 0; i < MAX_UNITS; i ++ )
 126         {
 127                 melted_unit unit = melted_get_unit( i );
 128                 if ( unit != NULL )
 129                 {
 130                         mlt_properties properties = unit->properties;
 131                         char *constructor = mlt_properties_get( properties, "constructor" );
 132                         int node = mlt_properties_get_int( properties, "node" );
 133                         int online = !mlt_properties_get_int( properties, "offline" );
 134                         mvcp_response_printf( cmd_arg->response, 1024, "U%d %02d %s %d\n", i, node, constructor, online );
 135                 }
 136         }
 137         mvcp_response_printf( cmd_arg->response, 1024, "\n" );
 138
 139         return error;
 140 }
 141
 142 static int filter_files( const struct dirent *de )
 143 {
 144         return de->d_name[ 0 ] != '.';
 145 }
 146
 147 /** List clips in a directory.
 148 */
 149 response_codes melted_list_clips( command_argument cmd_arg )
 150 {
 151         response_codes error = RESPONSE_BAD_FILE;
 152         const char *dir_name = (const char*) cmd_arg->argument;
 153         DIR *dir;
 154         char fullname[1024];
 155         struct dirent **de = NULL;
 156         int i, n;
 157
 158         snprintf( fullname, 1023, "%s%s", cmd_arg->root_dir, dir_name );
 159         dir = opendir( fullname );
 160         if (dir != NULL)
 161         {
 162                 struct stat info;
 163                 error = RESPONSE_SUCCESS_N;
 164                 n = scandir( fullname, &de, filter_files, alphasort );
 165                 for (i = 0; i < n; i++ )
 166                 {
 167                         snprintf( fullname, 1023, "%s%s/%s", cmd_arg->root_dir, dir_name, de[i]->d_name );
 168                         if ( stat( fullname, &info ) == 0 && S_ISDIR( info.st_mode ) )
 169                                 mvcp_response_printf( cmd_arg->response, 1024, "\"%s/\"\n", de[i]->d_name );
 170                 }
 171                 for (i = 0; i < n; i++ )
 172                 {
 173                         snprintf( fullname, 1023, "%s%s/%s", cmd_arg->root_dir, dir_name, de[i]->d_name );
 174                         if ( lstat( fullname, &info ) == 0 &&
 175                                  ( S_ISREG( info.st_mode ) || S_ISLNK( info.st_mode ) || ( strstr( fullname, ".clip" ) && info.st_mode | S_IXUSR ) ) )
 176                                 mvcp_response_printf( cmd_arg->response, 1024, "\"%s\" %llu\n", de[i]->d_name, (unsigned long long) info.st_size );
 177                         free( de[ i ] );
 178                 }
 179                 free( de );
 180                 closedir( dir );
 181                 mvcp_response_write( cmd_arg->response, "\n", 1 );
 182         }
 183
 184         return error;
 185 }
 186
 187 /** Set a server configuration property.
 188 */
 189
 190 response_codes melted_set_global_property( command_argument cmd_arg )
 191 {
 192         char *key = (char*) cmd_arg->argument;
 193         char *value = NULL;
 194
 195         value = strchr( key, '=' );
 196         if (value == NULL)
 197                 return RESPONSE_OUT_OF_RANGE;
 198         *value = 0;
 199         value++;
 200         melted_log( LOG_DEBUG, "SET %s = %s", key, value );
 201
 202         if ( strncasecmp( key, "root", 1024) == 0 )
 203         {
 204                 int len = strlen(value);
 205                 int i;
 206
 207                 /* stop all units and unload clips */
 208                 for (i = 0; i < MAX_UNITS; i++)
 209                 {
 210                         if (g_units[i] != NULL)
 211                                 melted_unit_terminate( g_units[i] );
 212                 }
 213
 214                 /* set the property */
 215                 strncpy( cmd_arg->root_dir, value, 1023 );
 216
 217                 /* add a trailing slash if needed */
 218                 if ( len && cmd_arg->root_dir[ len - 1 ] != '/')
 219                 {
 220                         cmd_arg->root_dir[ len ] = '/';
 221                         cmd_arg->root_dir[ len + 1 ] = '\0';
 222                 }
 223         }
 224         else
 225                 return RESPONSE_OUT_OF_RANGE;
 226
 227         return RESPONSE_SUCCESS;
 228 }
 229
 230 /** Get a server configuration property.
 231 */
 232
 233 response_codes melted_get_global_property( command_argument cmd_arg )
 234 {
 235         char *key = (char*) cmd_arg->argument;
 236
 237         if ( strncasecmp( key, "root", 1024) == 0 )
 238         {
 239                 mvcp_response_write( cmd_arg->response, cmd_arg->root_dir, strlen(cmd_arg->root_dir) );
 240                 return RESPONSE_SUCCESS_1;
 241         }
 242         else
 243                 return RESPONSE_OUT_OF_RANGE;
 244
 245         return RESPONSE_SUCCESS;
 246 }
 247
 248