git.sesse.net Git - vlc/blob - src/control/vlm.c

   1 /*****************************************************************************
   2  * vlm.c: libvlc new API VLM handling functions
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #include "libvlc_internal.h"
  25
  26 #include <vlc/libvlc.h>
  27 #include <vlc_es.h>
  28 #include <vlc_input.h>
  29 #include <vlc_vlm.h>
  30
  31 #if 0
  32 /* local function to be used in libvlc_vlm_show_media only */
  33 static char* recurse_answer( char* psz_prefix, vlm_message_t *p_answer ) {
  34     char* psz_childprefix;
  35     char* psz_response="";
  36     char* response_tmp;
  37     int i;
  38     vlm_message_t *aw_child, **paw_child;
  39
  40     asprintf( &psz_childprefix, "%s%s.", psz_prefix, p_answer->psz_name );
  41
  42     if ( p_answer->i_child )
  43     {
  44         paw_child = p_answer->child;
  45         aw_child = *( paw_child );
  46         for( i = 0; i < p_answer->i_child; i++ )
  47         {
  48             asprintf( &response_tmp, "%s%s%s:%s\n",
  49                       psz_response, psz_prefix, aw_child->psz_name,
  50                       aw_child->psz_value );
  51             free( psz_response );
  52             psz_response = response_tmp;
  53             if ( aw_child->i_child )
  54             {
  55                 asprintf(&response_tmp, "%s%s", psz_response,
  56                          recurse_answer(psz_childprefix, aw_child));
  57                 free( psz_response );
  58                 psz_response = response_tmp;
  59             }
  60             paw_child++;
  61             aw_child = *( paw_child );
  62         }
  63     }
  64     free( psz_childprefix );
  65     return psz_response;
  66 }
  67
  68 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
  69                              libvlc_exception_t *p_exception )
  70 {
  71     char *psz_message;
  72     vlm_message_t *answer;
  73     char *psz_response;
  74
  75     CHECK_VLM;
  76 #ifdef ENABLE_VLM
  77     asprintf( &psz_message, "show %s", psz_name );
  78     asprintf( &psz_response, "", psz_name );
  79     vlm_ExecuteCommand( p_instance->p_vlm, psz_message, &answer );
  80     if( answer->psz_value )
  81     {
  82         libvlc_exception_raise( p_exception, "Unable to call show %s: %s",
  83                                 psz_name, answer->psz_value );
  84     }
  85     else
  86     {
  87         if ( answer->child )
  88         {
  89             psz_response = recurse_answer( "", answer );
  90         }
  91     }
  92     free( psz_message );
  93     return(psz_response );
  94 #endif
  95     return NULL;
  96 }
  97 #endif
  98
  99 static int libvlc_vlm_init( libvlc_instance_t *p_instance,
 100                             libvlc_exception_t *p_exception )
 101 {
 102 #ifdef ENABLE_VLM
 103     if( !p_instance->p_vlm )
 104         p_instance->p_vlm = vlm_New( p_instance->p_libvlc_int );
 105 #endif
 106
 107     if( !p_instance->p_vlm )
 108     {
 109         libvlc_exception_raise( p_exception,
 110                                 "Unable to create VLM. It might be disabled." );
 111         return VLC_EGENERIC;
 112     }
 113     return VLC_SUCCESS;
 114 }
 115 #define VLM_RET(p,ret) do {                                     \
 116     if( libvlc_vlm_init( p_instance, p_exception ) ) return ret;\
 117     (p) = p_instance->p_vlm;                                    \
 118   } while(0)
 119 #define VLM(p) VLM_RET(p,)
 120
 121 void libvlc_vlm_release( libvlc_instance_t *p_instance, libvlc_exception_t *p_exception)
 122 {
 123     vlm_t *p_vlm;
 124
 125     VLM(p_vlm);
 126
 127     vlm_Delete( p_vlm );
 128 }
 129
 130
 131 void libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance, char *psz_name,
 132                                char *psz_input, char *psz_output,
 133                                int i_options, char **ppsz_options,
 134                                int b_enabled, int b_loop,
 135                                libvlc_exception_t *p_exception )
 136 {
 137     vlm_t *p_vlm;
 138     vlm_media_t m;
 139     int n;
 140
 141     VLM(p_vlm);
 142
 143     vlm_media_Init( &m );
 144     m.psz_name = strdup( psz_name );
 145     m.b_enabled = b_enabled;
 146     m.b_vod = VLC_FALSE;
 147     m.broadcast.b_loop = b_loop;
 148     if( psz_input )
 149         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 150     if( psz_output )
 151         m.psz_output = strdup( psz_output );
 152     for( n = 0; n < i_options; n++ )
 153         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 154
 155     if( vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL ) )
 156     {
 157         vlm_media_Clean( &m );
 158         libvlc_exception_raise( p_exception, "Media %s creation failed", psz_name );
 159     }
 160     vlm_media_Clean( &m );
 161 }
 162
 163 void libvlc_vlm_del_media( libvlc_instance_t *p_instance, char *psz_name,
 164                            libvlc_exception_t *p_exception )
 165 {
 166     vlm_t *p_vlm;
 167     int64_t id;
 168
 169     VLM(p_vlm);
 170
 171     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 172         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 173     {
 174         libvlc_exception_raise( p_exception, "Unable to delete %s", psz_name );
 175     }
 176 }
 177
 178 #define VLM_CHANGE(psz_error, code ) do {   \
 179     vlm_media_t *p_media;   \
 180     vlm_t *p_vlm;           \
 181     int64_t id;             \
 182     VLM(p_vlm);             \
 183     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||    \
 184         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) ) {       \
 185         libvlc_exception_raise( p_exception, psz_error, psz_name ); \
 186         return;             \
 187     }                       \
 188     if( !p_media ) goto error;                                      \
 189                             \
 190     code;                   \
 191                             \
 192     if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) ) {         \
 193         vlm_media_Delete( p_media );                                \
 194         goto error;         \
 195     }                       \
 196     vlm_media_Delete( p_media );                                    \
 197     return;                 \
 198   error:                    \
 199     libvlc_exception_raise( p_exception, psz_error, psz_name );\
 200   } while(0)
 201
 202 void libvlc_vlm_set_enabled( libvlc_instance_t *p_instance, char *psz_name,
 203                              int b_enabled, libvlc_exception_t *p_exception )
 204 {
 205 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 206     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 207 #undef VLM_CHANGE_CODE
 208 }
 209
 210 void libvlc_vlm_set_loop( libvlc_instance_t *p_instance, char *psz_name,
 211                           int b_loop, libvlc_exception_t *p_exception )
 212 {
 213 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 214     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 215 #undef VLM_CHANGE_CODE
 216 }
 217
 218 void libvlc_vlm_set_output( libvlc_instance_t *p_instance, char *psz_name,
 219                             char *psz_output,  libvlc_exception_t *p_exception )
 220 {
 221 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 222                           p_media->psz_output = strdup( psz_output ); }
 223     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 224 #undef VLM_CHANGE_CODE
 225 }
 226
 227 void libvlc_vlm_set_input( libvlc_instance_t *p_instance, char *psz_name,
 228                            char *psz_input,  libvlc_exception_t *p_exception )
 229 {
 230 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 231                             free( p_media->ppsz_input[--p_media->i_input] );\
 232                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 233     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 234 #undef VLM_CHANGE_CODE
 235 }
 236
 237 void libvlc_vlm_add_input( libvlc_instance_t *p_instance, char *psz_name,
 238                            char *psz_input,  libvlc_exception_t *p_exception )
 239 {
 240 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 241     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 242 #undef VLM_CHANGE_CODE
 243 }
 244
 245 void libvlc_vlm_change_media( libvlc_instance_t *p_instance, char *psz_name,
 246                               char *psz_input, char *psz_output, int i_options,
 247                               char **ppsz_options, int b_enabled, int b_loop,
 248                               libvlc_exception_t *p_exception )
 249 {
 250 #define VLM_CHANGE_CODE { int n;        \
 251     p_media->b_enabled = b_enabled;     \
 252     p_media->broadcast.b_loop = b_loop; \
 253     while( p_media->i_input > 0 )       \
 254         free( p_media->ppsz_input[--p_media->i_input] );    \
 255     if( psz_input )                     \
 256         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 257     free( p_media->psz_output );        \
 258     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 259     while( p_media->i_option > 0 )     \
 260         free( p_media->ppsz_option[--p_media->i_option] );        \
 261     for( n = 0; n < i_options; n++ )    \
 262         TAB_APPEND( p_media->i_option, p_media->ppsz_option, strdup(ppsz_options[n]) );   \
 263   }
 264     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 265 #undef VLM_CHANGE_CODE
 266 }
 267
 268 void libvlc_vlm_play_media( libvlc_instance_t *p_instance, char *psz_name,
 269                             libvlc_exception_t *p_exception )
 270 {
 271     vlm_t *p_vlm;
 272     int64_t id;
 273
 274     VLM(p_vlm);
 275
 276     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 277         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 278     {
 279         libvlc_exception_raise( p_exception, "Unable to play %s", psz_name );
 280     }
 281 }
 282
 283 void libvlc_vlm_stop_media( libvlc_instance_t *p_instance, char *psz_name,
 284                             libvlc_exception_t *p_exception )
 285 {
 286     vlm_t *p_vlm;
 287     int64_t id;
 288
 289     VLM(p_vlm);
 290
 291     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 292         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 293     {
 294         libvlc_exception_raise( p_exception, "Unable to stop %s", psz_name );
 295     }
 296 }
 297
 298 void libvlc_vlm_pause_media( libvlc_instance_t *p_instance, char *psz_name,
 299                             libvlc_exception_t *p_exception )
 300 {
 301     vlm_t *p_vlm;
 302     int64_t id;
 303
 304     VLM(p_vlm);
 305
 306     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 307         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 308     {
 309         libvlc_exception_raise( p_exception, "Unable to pause %s", psz_name );
 310     }
 311 }
 312
 313 void libvlc_vlm_seek_media( libvlc_instance_t *p_instance, char *psz_name,
 314                             float f_percentage, libvlc_exception_t *p_exception )
 315 {
 316     vlm_t *p_vlm;
 317     int64_t id;
 318
 319     VLM(p_vlm);
 320
 321     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 322         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL, f_percentage ) )
 323     {
 324         libvlc_exception_raise( p_exception, "Unable to seek %s to %f", psz_name, f_percentage );
 325     }
 326 }
 327
 328 static vlm_media_instance_t *libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 329                                                             char *psz_name, int i_minstance_idx,
 330                                                             libvlc_exception_t *p_exception )
 331 {
 332     vlm_t *p_vlm;
 333     vlm_media_instance_t **pp_minstance;
 334     vlm_media_instance_t *p_minstance;
 335     int i_minstance;
 336     int64_t id;
 337
 338     VLM_RET(p_vlm, NULL);
 339
 340     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 341         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance, &i_minstance ) )
 342     {
 343         libvlc_exception_raise( p_exception, "Unable to get %s instances", psz_name );
 344         return NULL;
 345     }
 346     p_minstance = NULL;
 347     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 348     {
 349         p_minstance = pp_minstance[i_minstance_idx];
 350         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 351     }
 352     while( i_minstance > 0 )
 353         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 354     TAB_CLEAN( i_minstance, pp_minstance );
 355     return p_minstance;
 356 }
 357
 358 #define LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( attr, returnType, getType, ret, code )\
 359 returnType libvlc_vlm_get_media_## attr( libvlc_instance_t *p_instance, \
 360                         char *psz_name, int i_instance, libvlc_exception_t *p_exception ) \
 361 { \
 362     vlm_media_instance_t *p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance, \
 363                                                                 p_exception );  \
 364     if( p_mi ) {                            \
 365         returnType ret_value;               \
 366         code;                               \
 367         vlm_media_instance_Delete( p_mi );  \
 368         return ret_value;                   \
 369     }                                       \
 370     libvlc_exception_raise( p_exception, "Unable to get %s "#attr "attribute" ); \
 371     return ret; \
 372 }
 373
 374 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( position, float, Float, -1, ret_value = p_mi->d_position; );
 375 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( time,     int, Integer, -1, ret_value = p_mi->i_time );
 376 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( length,   int, Integer, -1, ret_value = p_mi->i_length );
 377 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( rate,     int, Integer, -1, ret_value = p_mi->i_rate );
 378 /* FIXME extend vlm_media_instance_t to be able to implement them */
 379 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( title,    int, Integer,  0, ret_value = 0 );
 380 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( chapter,  int, Integer,  0, ret_value = 0 );
 381 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( seekable, int, Bool,     0, ret_value = VLC_FALSE );
 382
 383 #undef LIBVLC_VLM_GET_MEDIA_ATTRIBUTE
 384
 385 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
 386                              libvlc_exception_t *p_exception )
 387 {
 388     /* FIXME is it needed ? */
 389     libvlc_exception_raise( p_exception, "Unable to call show %s", psz_name );
 390     return NULL;
 391 }