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 <vlc/libvlc.h>
  25 #include <vlc_es.h>
  26 #include <vlc_input.h>
  27 #include <vlc_vlm.h>
  28
  29 #include "libvlc_internal.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_add_broadcast( libvlc_instance_t *p_instance, char *psz_name,
 122                                char *psz_input, char *psz_output,
 123                                int i_options, char **ppsz_options,
 124                                int b_enabled, int b_loop,
 125                                libvlc_exception_t *p_exception )
 126 {
 127     vlm_t *p_vlm;
 128     vlm_media_t m;
 129     int n;
 130
 131     VLM(p_vlm);
 132
 133     vlm_media_Init( &m );
 134     m.psz_name = strdup( psz_name );
 135     m.b_enabled = b_enabled;
 136     m.b_vod = VLC_FALSE;
 137     m.broadcast.b_loop = b_loop;
 138     if( psz_input )
 139         TAB_APPEND( m.i_input, m.ppsz_input, strdup(psz_input) );
 140     if( psz_output )
 141         m.psz_output = strdup( psz_output );
 142     for( n = 0; n < i_options; n++ )
 143         TAB_APPEND( m.i_option, m.ppsz_option, strdup(ppsz_options[n]) );
 144
 145     if( vlm_Control( p_vlm, VLM_ADD_MEDIA, &m, NULL ) )
 146     {
 147         vlm_media_Clean( &m );
 148         libvlc_exception_raise( p_exception, "Media %s creation failed", psz_name );
 149     }
 150     vlm_media_Clean( &m );
 151 }
 152
 153 void libvlc_vlm_del_media( libvlc_instance_t *p_instance, char *psz_name,
 154                            libvlc_exception_t *p_exception )
 155 {
 156     vlm_t *p_vlm;
 157     int64_t id;
 158
 159     VLM(p_vlm);
 160
 161     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 162         vlm_Control( p_vlm, VLM_DEL_MEDIA, id ) )
 163     {
 164         libvlc_exception_raise( p_exception, "Unable to delete %s", psz_name );
 165     }
 166 }
 167
 168 #define VLM_CHANGE(psz_error, code ) do {   \
 169     vlm_media_t *p_media;   \
 170     vlm_t *p_vlm;           \
 171     int64_t id;             \
 172     VLM(p_vlm);             \
 173     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||    \
 174         vlm_Control( p_vlm, VLM_GET_MEDIA, id, &p_media ) ) {       \
 175         libvlc_exception_raise( p_exception, psz_error, psz_name ); \
 176         return;             \
 177     }                       \
 178     if( !p_media ) goto error;                                      \
 179                             \
 180     code;                   \
 181                             \
 182     if( vlm_Control( p_vlm, VLM_CHANGE_MEDIA, p_media ) ) {         \
 183         vlm_media_Delete( p_media );                                \
 184         goto error;         \
 185     }                       \
 186     vlm_media_Delete( p_media );                                    \
 187     return;                 \
 188   error:                    \
 189     libvlc_exception_raise( p_exception, psz_error, psz_name );\
 190   } while(0)
 191
 192 void libvlc_vlm_set_enabled( libvlc_instance_t *p_instance, char *psz_name,
 193                              int b_enabled, libvlc_exception_t *p_exception )
 194 {
 195 #define VLM_CHANGE_CODE { p_media->b_enabled = b_enabled; }
 196     VLM_CHANGE( "Unable to delete %s", VLM_CHANGE_CODE );
 197 #undef VLM_CHANGE_CODE
 198 }
 199
 200 void libvlc_vlm_set_loop( libvlc_instance_t *p_instance, char *psz_name,
 201                           int b_loop, libvlc_exception_t *p_exception )
 202 {
 203 #define VLM_CHANGE_CODE { p_media->broadcast.b_loop = b_loop; }
 204     VLM_CHANGE( "Unable to change %s loop property", VLM_CHANGE_CODE );
 205 #undef VLM_CHANGE_CODE
 206 }
 207
 208 void libvlc_vlm_set_output( libvlc_instance_t *p_instance, char *psz_name,
 209                             char *psz_output,  libvlc_exception_t *p_exception )
 210 {
 211 #define VLM_CHANGE_CODE { if( p_media->psz_output ) free( p_media->psz_output ); \
 212                           p_media->psz_output = strdup( psz_output ); }
 213     VLM_CHANGE( "Unable to change %s output property", VLM_CHANGE_CODE );
 214 #undef VLM_CHANGE_CODE
 215 }
 216
 217 void libvlc_vlm_set_input( libvlc_instance_t *p_instance, char *psz_name,
 218                            char *psz_input,  libvlc_exception_t *p_exception )
 219 {
 220 #define VLM_CHANGE_CODE { while( p_media->i_input > 0 ) \
 221                             free( p_media->ppsz_input[--p_media->i_input] );\
 222                           TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 223     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 224 #undef VLM_CHANGE_CODE
 225 }
 226
 227 void libvlc_vlm_add_input( libvlc_instance_t *p_instance, char *psz_name,
 228                            char *psz_input,  libvlc_exception_t *p_exception )
 229 {
 230 #define VLM_CHANGE_CODE { TAB_APPEND( p_media->i_input, p_media->ppsz_input, strdup(psz_input) ); }
 231     VLM_CHANGE( "Unable to change %s input property", VLM_CHANGE_CODE );
 232 #undef VLM_CHANGE_CODE
 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     vlm_t *p_vlm;
 263     int64_t id;
 264
 265     VLM(p_vlm);
 266
 267     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 268         vlm_Control( p_vlm, VLM_START_MEDIA_BROADCAST_INSTANCE, id, NULL, 0 ) )
 269     {
 270         libvlc_exception_raise( p_exception, "Unable to play %s", psz_name );
 271     }
 272 }
 273
 274 void libvlc_vlm_stop_media( libvlc_instance_t *p_instance, char *psz_name,
 275                             libvlc_exception_t *p_exception )
 276 {
 277     vlm_t *p_vlm;
 278     int64_t id;
 279
 280     VLM(p_vlm);
 281
 282     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 283         vlm_Control( p_vlm, VLM_STOP_MEDIA_INSTANCE, id, NULL ) )
 284     {
 285         libvlc_exception_raise( p_exception, "Unable to stop %s", psz_name );
 286     }
 287 }
 288
 289 void libvlc_vlm_pause_media( libvlc_instance_t *p_instance, char *psz_name,
 290                             libvlc_exception_t *p_exception )
 291 {
 292     vlm_t *p_vlm;
 293     int64_t id;
 294
 295     VLM(p_vlm);
 296
 297     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 298         vlm_Control( p_vlm, VLM_PAUSE_MEDIA_INSTANCE, id, NULL ) )
 299     {
 300         libvlc_exception_raise( p_exception, "Unable to pause %s", psz_name );
 301     }
 302 }
 303
 304 void libvlc_vlm_seek_media( libvlc_instance_t *p_instance, char *psz_name,
 305                             float f_percentage, 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_SET_MEDIA_INSTANCE_POSITION, id, NULL, f_percentage ) )
 314     {
 315         libvlc_exception_raise( p_exception, "Unable to seek %s to %f", psz_name, f_percentage );
 316     }
 317 }
 318
 319 static vlm_media_instance_t *libvlc_vlm_get_media_instance( libvlc_instance_t *p_instance,
 320                                                             char *psz_name, int i_minstance_idx,
 321                                                             libvlc_exception_t *p_exception )
 322 {
 323     vlm_t *p_vlm;
 324     vlm_media_instance_t **pp_minstance;
 325     vlm_media_instance_t *p_minstance;
 326     int i_minstance;
 327     int64_t id;
 328
 329     VLM_RET(p_vlm, NULL);
 330
 331     if( vlm_Control( p_vlm, VLM_GET_MEDIA_ID, psz_name, &id ) ||
 332         vlm_Control( p_vlm, VLM_GET_MEDIA_INSTANCES, id, &pp_minstance, &i_minstance ) )
 333     {
 334         libvlc_exception_raise( p_exception, "Unable to get %s instances", psz_name );
 335         return NULL;
 336     }
 337     p_minstance = NULL;
 338     if( i_minstance_idx >= 0 && i_minstance_idx < i_minstance )
 339     {
 340         p_minstance = pp_minstance[i_minstance_idx];
 341         TAB_REMOVE( i_minstance, pp_minstance, p_minstance );
 342     }
 343     while( i_minstance > 0 )
 344         vlm_media_instance_Delete( pp_minstance[--i_minstance] );
 345     TAB_CLEAN( i_minstance, pp_minstance );
 346     return p_minstance;
 347 }
 348
 349 #define LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( attr, returnType, getType, ret, code )\
 350 returnType libvlc_vlm_get_media_## attr( libvlc_instance_t *p_instance, \
 351                         char *psz_name, int i_instance, libvlc_exception_t *p_exception ) \
 352 { \
 353     vlm_media_instance_t *p_mi = libvlc_vlm_get_media_instance( p_instance, psz_name, i_instance, \
 354                                                                 p_exception );  \
 355     if( p_mi ) {                            \
 356         returnType ret_value;               \
 357         code;                               \
 358         vlm_media_instance_Delete( p_mi );  \
 359         return ret_value;                   \
 360     }                                       \
 361     libvlc_exception_raise( p_exception, "Unable to get %s "#attr "attribute" ); \
 362     return ret; \
 363 }
 364
 365 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( position, float, Float, -1, ret_value = p_mi->d_position; );
 366 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( time,     int, Integer, -1, ret_value = p_mi->i_time );
 367 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( length,   int, Integer, -1, ret_value = p_mi->i_length );
 368 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( rate,     int, Integer, -1, ret_value = p_mi->i_rate );
 369 /* FIXME extend vlm_media_instance_t to be able to implement them */
 370 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( title,    int, Integer,  0, ret_value = 0 );
 371 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( chapter,  int, Integer,  0, ret_value = 0 );
 372 LIBVLC_VLM_GET_MEDIA_ATTRIBUTE( seekable, int, Bool,     0, ret_value = VLC_FALSE );
 373
 374 #undef LIBVLC_VLM_GET_MEDIA_ATTRIBUTE
 375
 376 char* libvlc_vlm_show_media( libvlc_instance_t *p_instance, char *psz_name,
 377                              libvlc_exception_t *p_exception )
 378 {
 379     /* FIXME is it needed ? */
 380     libvlc_exception_raise( p_exception, "Unable to call show %s", psz_name );
 381     return NULL;
 382 }