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: playlist.c 14265 2006-02-12 17:31:39Z zorglub $
   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 #include <vlc/libvlc.h>
  26 #include <vlc_es.h>
  27 #include <vlc_input.h>
  28 #include <vlc_vlm.h>
  29
  30 #if 0
  31 /* local function to be used in libvlc_vlm_show_media only */
  32 static char* recurse_answer( char* psz_prefix, vlm_message_t *p_answer ) {
  33     char* psz_childprefix;
  34     char* psz_response="";
  35     char* response_tmp;
  36     int i;
  37     vlm_message_t *aw_child, **paw_child;
  38
  39     asprintf( &psz_childprefix, "%s%s.", psz_prefix, p_answer->psz_name );
  40
  41     if ( p_answer->i_child )
  42     {
  43         paw_child = p_answer->child;
  44         aw_child = *( paw_child );
  45         for( i = 0; i < p_answer->i_child; i++ )
  46         {
  47             asprintf( &response_tmp, "%s%s%s:%s\n",
  48                       psz_response, psz_prefix, aw_child->psz_name,
  49                       aw_child->psz_value );
  50             free( psz_response );
  51             psz_response = response_tmp;
  52             if ( aw_child->i_child )
  53             {
  54                 asprintf(&response_tmp, "%s%s", psz_response,
  55                          recurse_answer(psz_childprefix, aw_child));
  56                 free( psz_response );
  57                 psz_response = response_tmp;
  58             }
  59             paw_child++;
  60             aw_child = *( paw_child );
  61         }
  62     }
  63     free( psz_childprefix );
  64     return psz_response;
  65 }
  66
  67 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
  68                              libvlc_exception_t *p_exception )
  69 {
  70     char *psz_message;
  71     vlm_message_t *answer;
  72     char *psz_response;
  73
  74     CHECK_VLM;
  75 #ifdef ENABLE_VLM
  76     asprintf( &psz_message, "show %s", psz_name );
  77     asprintf( &psz_response, "", psz_name );
  78     vlm_ExecuteCommand( p_instance->p_vlm, psz_message, &answer );
  79     if( answer->psz_value )
  80     {
  81         libvlc_exception_raise( p_exception, "Unable to call show %s: %s",
  82                                 psz_name, answer->psz_value );
  83     }
  84     else
  85     {
  86         if ( answer->child )
  87         {
  88             psz_response = recurse_answer( "", answer );
  89         }
  90     }
  91     free( psz_message );
  92     return(psz_response );
  93 #endif
  94     return NULL;
  95 }
  96 #endif
  97
  98 static int libvlc_vlm_init( libvlc_instance_t *p_instance,
  99                             libvlc_exception_t *p_exception )
 100 {
 101 #ifdef ENABLE_VLM
 102     if( !p_instance->p_vlm )
 103         p_instance->p_vlm = vlm_New( p_instance->p_libvlc_int );
 104 #endif
 105
 106     if( !p_instance->p_vlm )
 107     {
 108         libvlc_exception_raise( p_exception,
 109                                 "Unable to create VLM. It might be disabled." );
 110         return VLC_EGENERIC;
 111     }
 112     return VLC_SUCCESS;
 113 }
 114 #define VLM_RET(p,ret) do {                                     \
 115     if( libvlc_vlm_init( p_instance, p_exception ) ) return ret;\
 116     (p) = p_instance->p_vlm;                                    \
 117   } while(0)
 118 #define VLM(p) VLM_RET(p,)
 119
 120 void libvlc_vlm_add_broadcast( libvlc_instance_t *p_instance, char *psz_name,
 121                                char *psz_input, char *psz_output,
 122                                int i_options, char **ppsz_options,
 123                                int b_enabled, int b_loop,
 124                                libvlc_exception_t *p_exception )
 125 {
 126     vlm_t *p_vlm;
 127     vlm_media_t m;
 128     int n;
 129
 130     VLM(p_vlm);
 131
 132     vlm_media_Init( &m );
 133     m.psz_name = strdup( psz_name );
 134     m.b_enabled = b_enabled;
 135     m.b_vod = VLC_FALSE;
 136     m.broadcast.b_loop = b_loop;
 137     if( psz_input )
 138         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 139     if( psz_output )
 140         m.psz_output = strdup( psz_output );
 141     for( n = 0; n < i_options; n++ )
 142         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 143
 144     if( vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL ) )
 145     {
 146         vlm_media_Clean( &m );
 147         libvlc_exception_raise( p_exception, "Media %s creation failed", psz_name );
 148     }
 149     vlm_media_Clean( &m );
 150 }
 151
 152 void libvlc_vlm_del_media( libvlc_instance_t *p_instance, char *psz_name,
 153                            libvlc_exception_t *p_exception )
 154 {
 155     vlm_t *p_vlm;
 156     int64_t id;
 157
 158     VLM(p_vlm);
 159
 160     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 161         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 162     {
 163         libvlc_exception_raise( p_exception, "Unable to delete %s", psz_name );
 164     }
 165 }
 166
 167 #define VLM_CHANGE(psz_error, code ) do {   \
 168     vlm_media_t *p_media;   \
 169     vlm_t *p_vlm;           \
 170     int64_t id;             \
 171     VLM(p_vlm);             \
 172     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||    \
 173         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) ) {       \
 174         libvlc_exception_raise( p_exception, psz_error, psz_name ); \
 175         return;             \
 176     }                       \
 177     if( !p_media ) goto error;                                      \
 178                             \
 179     code;                   \
 180                             \
 181     if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) ) {         \
 182         vlm_media_Delete( p_media );                                \
 183         goto error;         \
 184     }                       \
 185     vlm_media_Delete( p_media );                                    \
 186     return;                 \
 187   error:                    \
 188     libvlc_exception_raise( p_exception, psz_error, psz_name );\
 189   } while(0)
 190
 191 void libvlc_vlm_set_enabled( libvlc_instance_t *p_instance, char *psz_name,
 192                              int b_enabled, libvlc_exception_t *p_exception )
 193 {
 194 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 195     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 196 #undef VLM_CHANGE_CODE
 197 }
 198
 199 void libvlc_vlm_set_loop( libvlc_instance_t *p_instance, char *psz_name,
 200                           int b_loop, libvlc_exception_t *p_exception )
 201 {
 202 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 203     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 204 #undef VLM_CHANGE_CODE
 205 }
 206
 207 void libvlc_vlm_set_output( libvlc_instance_t *p_instance, char *psz_name,
 208                             char *psz_output,  libvlc_exception_t *p_exception )
 209 {
 210 #define VLM_CHANGE_CODE { if( p_media->psz_output ) free( p_media->psz_output ); \
 211                           p_media->psz_output = strdup( psz_output ); }
 212     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 213 #undef VLM_CHANGE_CODE
 214 }
 215
 216 void libvlc_vlm_set_input( libvlc_instance_t *p_instance, char *psz_name,
 217                            char *psz_input,  libvlc_exception_t *p_exception )
 218 {
 219 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 220                             free( p_media->ppsz_input[--p_media->i_input] );\
 221                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 222     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 223 #undef VLM_CHANGE_CODE
 224 }
 225
 226 void libvlc_vlm_add_input( libvlc_instance_t *p_instance, char *psz_name,
 227                            char *psz_input,  libvlc_exception_t *p_exception )
 228 {
 229 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 230     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 231 #undef VLM_CHANGE_CODE
 232 }
 233
 234
 235 void libvlc_vlm_change_media( libvlc_instance_t *p_instance, char *psz_name,
 236                               char *psz_input, char *psz_output, int i_options,
 237                               char **ppsz_options, int b_enabled, int b_loop,
 238                               libvlc_exception_t *p_exception )
 239 {
 240 #define VLM_CHANGE_CODE { int n;        \
 241     p_media->b_enabled = b_enabled;     \
 242     p_media->broadcast.b_loop = b_loop; \
 243     while( p_media->i_input > 0 )       \
 244         free( p_media->ppsz_input[--p_media->i_input] );    \
 245     if( psz_input )                     \
 246         TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); \
 247     if( p_media->psz_output )           \
 248         free( p_media->psz_output );    \
 249     p_media->psz_output = psz_output ? strdup( psz_output ) : NULL; \
 250     while( p_media->i_option > 0 )     \
 251         free( p_media->ppsz_option[--p_media->i_option] );        \
 252     for( n = 0; n < i_options; n++ )    \
 253         TAB_APPEND( p_media->i_option, p_media->ppsz_option, strdup(ppsz_options[n]) );   \
 254   }
 255     VLM_CHANGE( "Unable to change %s properties", VLM_CHANGE_CODE );
 256 #undef VLM_CHANGE_CODE
 257 }
 258
 259 void libvlc_vlm_play_media( libvlc_instance_t *p_instance, char *psz_name,
 260                             libvlc_exception_t *p_exception )
 261
 262 {
 263     vlm_t *p_vlm;
 264     int64_t id;
 265
 266     VLM(p_vlm);
 267
 268     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 269         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 270     {
 271         libvlc_exception_raise( p_exception, "Unable to play %s", psz_name );
 272     }
 273 }
 274
 275 void libvlc_vlm_stop_media( libvlc_instance_t *p_instance, char *psz_name,
 276                             libvlc_exception_t *p_exception )
 277
 278 {
 279     vlm_t *p_vlm;
 280     int64_t id;
 281
 282     VLM(p_vlm);
 283
 284     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 285         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 286     {
 287         libvlc_exception_raise( p_exception, "Unable to stop %s", psz_name );
 288     }
 289 }
 290
 291 void libvlc_vlm_pause_media( libvlc_instance_t *p_instance, char *psz_name,
 292                             libvlc_exception_t *p_exception )
 293
 294 {
 295     vlm_t *p_vlm;
 296     int64_t id;
 297
 298     VLM(p_vlm);
 299
 300     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 301         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 302     {
 303         libvlc_exception_raise( p_exception, "Unable to pause %s", psz_name );
 304     }
 305 }
 306
 307 void libvlc_vlm_seek_media( libvlc_instance_t *p_instance, char *psz_name,
 308                             float f_percentage, libvlc_exception_t *p_exception )
 309
 310 {
 311     vlm_t *p_vlm;
 312     int64_t id;
 313
 314     VLM(p_vlm);
 315
 316     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 317         vlm_Control( p_vlm, VLM_SET_MEDIA_INSTANCE_POSITION, id, NULL, f_percentage ) )
 318     {
 319         libvlc_exception_raise( p_exception, "Unable to seek %s to %f", psz_name, f_percentage );
 320     }
 321 }
 322
 323 static vlm_media_instance_t *libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 324                                                             char *psz_name, int i_minstance_idx,
 325                                                             libvlc_exception_t *p_exception )
 326 {
 327     vlm_t *p_vlm;
 328     vlm_media_instance_t **pp_minstance;
 329     vlm_media_instance_t *p_minstance;
 330     int i_minstance;
 331     int64_t id;
 332
 333     VLM_RET(p_vlm, NULL);
 334
 335     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 336         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance, &i_minstance ) )
 337     {
 338         libvlc_exception_raise( p_exception, "Unable to get %s instances", psz_name );
 339         return NULL;
 340     }
 341     p_minstance = NULL;
 342     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 343     {
 344         p_minstance = pp_minstance[i_minstance_idx];
 345         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 346     }
 347     while( i_minstance > 0 )
 348         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 349     TAB_CLEAN( i_minstance, pp_minstance );
 350     return p_minstance;
 351 }
 352
 353 #define LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( attr, returnType, getType, ret, code )\
 354 returnType libvlc_vlm_get_media_## attr( libvlc_instance_t *p_instance, \
 355                         char *psz_name, int i_instance, libvlc_exception_t *p_exception ) \
 356 { \
 357     vlm_media_instance_t *p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance, \
 358                                                                 p_exception );  \
 359     if( p_mi ) {                            \
 360         returnType ret_value;               \
 361         code;                               \
 362         vlm_media_instance_Delete( p_mi );  \
 363         return ret_value;                   \
 364     }                                       \
 365     libvlc_exception_raise( p_exception, "Unable to get %s "#attr "attribute" ); \
 366     return ret; \
 367 }
 368
 369 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( position, float, Float, -1, ret_value = p_mi->d_position; );
 370 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( time,     int, Integer, -1, ret_value = p_mi->i_time );
 371 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( length,   int, Integer, -1, ret_value = p_mi->i_length );
 372 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( rate,     int, Integer, -1, ret_value = p_mi->i_rate );
 373 /* FIXME extend vlm_media_instance_t to be able to implement them */
 374 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( title,    int, Integer,  0, ret_value = 0 );
 375 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( chapter,  int, Integer,  0, ret_value = 0 );
 376 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( seekable, int, Bool,     0, ret_value = VLC_FALSE );
 377
 378 #undef LIBVLC_VLM_GET_MEDIA_ATTRIBUTE
 379
 380 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
 381                              libvlc_exception_t *p_exception )
 382 {
 383     /* FIXME is it needed ? */
 384     libvlc_exception_raise( p_exception, "Unable to call show %s", psz_name );
 385     return NULL;
 386 }
 387