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 #else
  95     libvlc_exception_raise( p_exception, "VLM has been disabled in this libvlc." );
  96     return NULL;
  97 #endif
  98 }
  99 #endif /* 0 */
 100
 101 static int libvlc_vlm_init( libvlc_instance_t *p_instance,
 102                             libvlc_exception_t *p_exception )
 103 {
 104 #ifdef ENABLE_VLM
 105     if( !p_instance->p_vlm )
 106         p_instance->p_vlm = vlm_New( p_instance->p_libvlc_int );
 107 #else
 108     libvlc_exception_raise( p_exception, "VLM has been disabled in this libvlc." );
 109     return VLC_EGENERIC;
 110 #endif
 111
 112     if( !p_instance->p_vlm )
 113     {
 114         libvlc_exception_raise( p_exception,
 115                                 "Unable to create VLM." );
 116         return VLC_EGENERIC;
 117     }
 118     return VLC_SUCCESS;
 119 }
 120 #define VLM_RET(p,ret) do {                                     \
 121     if( libvlc_vlm_init( p_instance, p_exception ) ) return ret;\
 122     (p) = p_instance->p_vlm;                                    \
 123   } while(0)
 124 #define VLM(p) VLM_RET(p,)
 125
 126 static vlm_media_instance_t *libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 127                                                             char *psz_name, int i_minstance_idx,
 128                                                             libvlc_exception_t *p_exception )
 129 {
 130     vlm_t *p_vlm;
 131     vlm_media_instance_t **pp_minstance;
 132     vlm_media_instance_t *p_minstance;
 133     int i_minstance;
 134     int64_t id;
 135
 136     VLM_RET(p_vlm, NULL);
 137
 138     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 139         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance, &i_minstance ) )
 140     {
 141         libvlc_exception_raise( p_exception, "Unable to get %s instances", psz_name );
 142         return NULL;
 143     }
 144     p_minstance = NULL;
 145     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 146     {
 147         p_minstance = pp_minstance[i_minstance_idx];
 148         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 149     }
 150     while( i_minstance > 0 )
 151         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 152     TAB_CLEAN( i_minstance, pp_minstance );
 153     return p_minstance;
 154 }
 155
 156
 157 void libvlc_vlm_release( libvlc_instance_t *p_instance, libvlc_exception_t *p_exception)
 158 {
 159     vlm_t *p_vlm;
 160
 161     VLM(p_vlm);
 162
 163     vlm_Delete( p_vlm );
 164 }
 165
 166
 167 void libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance, char *psz_name,
 168                                char *psz_input, char *psz_output,
 169                                int i_options, char **ppsz_options,
 170                                int b_enabled, int b_loop,
 171                                libvlc_exception_t *p_exception )
 172 {
 173     vlm_t *p_vlm;
 174     vlm_media_t m;
 175     int n;
 176
 177     VLM(p_vlm);
 178
 179     vlm_media_Init( &m );
 180     m.psz_name = strdup( psz_name );
 181     m.b_enabled = b_enabled;
 182     m.b_vod = false;
 183     m.broadcast.b_loop = b_loop;
 184     if( psz_input )
 185         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 186     if( psz_output )
 187         m.psz_output = strdup( psz_output );
 188     for( n = 0; n < i_options; n++ )
 189         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 190
 191     if( vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL ) )
 192     {
 193         vlm_media_Clean( &m );
 194         libvlc_exception_raise( p_exception, "Media %s creation failed", psz_name );
 195     }
 196     vlm_media_Clean( &m );
 197 }
 198
 199 void libvlc_vlm_del_media( libvlc_instance_t *p_instance, char *psz_name,
 200                            libvlc_exception_t *p_exception )
 201 {
 202     vlm_t *p_vlm;
 203     int64_t id;
 204
 205     VLM(p_vlm);
 206
 207     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 208         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 209     {
 210         libvlc_exception_raise( p_exception, "Unable to delete %s", psz_name );
 211     }
 212 }
 213
 214 #define VLM_CHANGE(psz_error, code ) do {   \
 215     vlm_media_t *p_media;   \
 216     vlm_t *p_vlm;           \
 217     int64_t id;             \
 218     VLM(p_vlm);             \
 219     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||    \
 220         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) ) {       \
 221         libvlc_exception_raise( p_exception, psz_error, psz_name ); \
 222         return;             \
 223     }                       \
 224     if( !p_media ) goto error;                                      \
 225                             \
 226     code;                   \
 227                             \
 228     if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) ) {         \
 229         vlm_media_Delete( p_media );                                \
 230         goto error;         \
 231     }                       \
 232     vlm_media_Delete( p_media );                                    \
 233     return;                 \
 234   error:                    \
 235     libvlc_exception_raise( p_exception, psz_error, psz_name );\
 236   } while(0)
 237
 238 void libvlc_vlm_set_enabled( libvlc_instance_t *p_instance, char *psz_name,
 239                              int b_enabled, libvlc_exception_t *p_exception )
 240 {
 241 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 242     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 243 #undef VLM_CHANGE_CODE
 244 }
 245
 246 void libvlc_vlm_set_loop( libvlc_instance_t *p_instance, char *psz_name,
 247                           int b_loop, libvlc_exception_t *p_exception )
 248 {
 249 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 250     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 251 #undef VLM_CHANGE_CODE
 252 }
 253
 254 void libvlc_vlm_set_output( libvlc_instance_t *p_instance, char *psz_name,
 255                             char *psz_output,  libvlc_exception_t *p_exception )
 256 {
 257 #define VLM_CHANGE_CODE { free( p_media->psz_output ); \
 258                           p_media->psz_output = strdup( psz_output ); }
 259     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 260 #undef VLM_CHANGE_CODE
 261 }
 262
 263 void libvlc_vlm_set_input( libvlc_instance_t *p_instance, char *psz_name,
 264                            char *psz_input,  libvlc_exception_t *p_exception )
 265 {
 266 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 267                             free( p_media->ppsz_input[--p_media->i_input] );\
 268                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 269     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 270 #undef VLM_CHANGE_CODE
 271 }
 272
 273 void libvlc_vlm_add_input( libvlc_instance_t *p_instance, char *psz_name,
 274                            char *psz_input,  libvlc_exception_t *p_exception )
 275 {
 276 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 277     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 278 #undef VLM_CHANGE_CODE
 279 }
 280
 281 void libvlc_vlm_change_media( libvlc_instance_t *p_instance, char *psz_name,
 282                               char *psz_input, char *psz_output, int i_options,
 283                               char **ppsz_options, int b_enabled, int b_loop,
 284                               libvlc_exception_t *p_exception )
 285 {
 286 #define VLM_CHANGE_CODE { int n;        \
 287     p_media->b_enabled = b_enabled;     \
 288     p_media->broadcast.b_loop = b_loop; \
 289     while( p_media->i_input > 0 )       \
 290         free( p_media->ppsz_input[--p_media->i_input] );    \
 291     if( psz_input )                     \
 292         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 293     free( p_media->psz_output );        \
 294     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 295     while( p_media->i_option > 0 )     \
 296         free( p_media->ppsz_option[--p_media->i_option] );        \
 297     for( n = 0; n < i_options; n++ )    \
 298         TAB_APPEND( p_media->i_option, p_media->ppsz_option, strdup(ppsz_options[n]) );   \
 299   }
 300     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 301 #undef VLM_CHANGE_CODE
 302 }
 303
 304 void libvlc_vlm_play_media( libvlc_instance_t *p_instance, char *psz_name,
 305                             libvlc_exception_t *p_exception )
 306 {
 307     vlm_t *p_vlm;
 308     int64_t id;
 309
 310     VLM(p_vlm);
 311
 312     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 313         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 314     {
 315         libvlc_exception_raise( p_exception, "Unable to play %s", psz_name );
 316     }
 317 }
 318
 319 void libvlc_vlm_stop_media( libvlc_instance_t *p_instance, char *psz_name,
 320                             libvlc_exception_t *p_exception )
 321 {
 322     vlm_t *p_vlm;
 323     int64_t id;
 324
 325     VLM(p_vlm);
 326
 327     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 328         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 329     {
 330         libvlc_exception_raise( p_exception, "Unable to stop %s", psz_name );
 331     }
 332 }
 333
 334 void libvlc_vlm_pause_media( libvlc_instance_t *p_instance, char *psz_name,
 335                             libvlc_exception_t *p_exception )
 336 {
 337     vlm_t *p_vlm;
 338     int64_t id;
 339
 340     VLM(p_vlm);
 341
 342     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 343         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 344     {
 345         libvlc_exception_raise( p_exception, "Unable to pause %s", psz_name );
 346     }
 347 }
 348
 349 void libvlc_vlm_seek_media( libvlc_instance_t *p_instance, char *psz_name,
 350                             float f_percentage, libvlc_exception_t *p_exception )
 351 {
 352     vlm_t *p_vlm;
 353     int64_t id;
 354
 355     VLM(p_vlm);
 356
 357     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 358         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL, f_percentage ) )
 359     {
 360         libvlc_exception_raise( p_exception, "Unable to seek %s to %f", psz_name, f_percentage );
 361     }
 362 }
 363
 364 #define LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( attr, returnType, getType, ret, code )\
 365 returnType libvlc_vlm_get_media_## attr( libvlc_instance_t *p_instance, \
 366                         char *psz_name, int i_instance, libvlc_exception_t *p_exception ) \
 367 { \
 368     vlm_media_instance_t *p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance, \
 369                                                                 p_exception );  \
 370     if( p_mi ) {                            \
 371         returnType ret_value;               \
 372         code;                               \
 373         vlm_media_instance_Delete( p_mi );  \
 374         return ret_value;                   \
 375     }                                       \
 376     libvlc_exception_raise( p_exception, "Unable to get %s "#attr "attribute" ); \
 377     return ret; \
 378 }
 379
 380 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( position, float, Float, -1, ret_value = p_mi->d_position; );
 381 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( time,     int, Integer, -1, ret_value = p_mi->i_time );
 382 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( length,   int, Integer, -1, ret_value = p_mi->i_length );
 383 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( rate,     int, Integer, -1, ret_value = p_mi->i_rate );
 384 /* FIXME extend vlm_media_instance_t to be able to implement them */
 385 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( title,    int, Integer,  0, ret_value = 0 );
 386 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( chapter,  int, Integer,  0, ret_value = 0 );
 387 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( seekable, int, Bool,     0, ret_value = false );
 388
 389 #undef LIBVLC_VLM_GET_MEDIA_ATTRIBUTE
 390
 391 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
 392                              libvlc_exception_t *p_exception )
 393 {
 394     /* FIXME is it needed ? */
 395     libvlc_exception_raise( p_exception, "Unable to call show %s", psz_name );
 396     return NULL;
 397 }