src/interface/dialog.c

   1 /*****************************************************************************
   2  * dialog.c: User dialog functions
   3  *****************************************************************************
   4  * Copyright © 2009 Rémi Denis-Courmont
   5  * Copyright © 2016 VLC authors and VideoLAN
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU Lesser General Public License as published by
   9  * the Free Software Foundation; either version 2.1 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public License
  18  * along with this program; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  20  *****************************************************************************/
  21
  22 /** @ingroup vlc_dialog */
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <stdarg.h>
  28
  29 #include <vlc_common.h>
  30 #include <vlc_dialog.h>
  31 #include <vlc_interrupt.h>
  32 #include <vlc_extensions.h>
  33 #include <assert.h>
  34 #include "libvlc.h"
  35
  36 struct vlc_dialog_provider
  37 {
  38     vlc_mutex_t                 lock;
  39     vlc_array_t                 dialog_array;
  40     vlc_dialog_cbs              cbs;
  41     void *                      p_cbs_data;
  42
  43     vlc_dialog_ext_update_cb    pf_ext_update;
  44     void *                      p_ext_data;
  45 };
  46
  47 enum dialog_type
  48 {
  49     VLC_DIALOG_ERROR,
  50     VLC_DIALOG_LOGIN,
  51     VLC_DIALOG_QUESTION,
  52     VLC_DIALOG_PROGRESS,
  53 };
  54
  55 struct dialog_answer
  56 {
  57     enum dialog_type i_type;
  58     union
  59     {
  60         struct
  61         {
  62             char *psz_username;
  63             char *psz_password;
  64             bool b_store;
  65         } login;
  66         struct
  67         {
  68             int i_action;
  69         } question;
  70     } u;
  71 };
  72
  73 struct dialog
  74 {
  75     enum dialog_type i_type;
  76     const char *psz_title;
  77     const char *psz_text;
  78
  79     union
  80     {
  81         struct
  82         {
  83             const char *psz_default_username;
  84             bool b_ask_store;
  85         } login;
  86         struct
  87         {
  88             vlc_dialog_question_type i_type;
  89             const char *psz_cancel;
  90             const char *psz_action1;
  91             const char *psz_action2;
  92         } question;
  93         struct
  94         {
  95             bool b_indeterminate;
  96             float f_position;
  97             const char *psz_cancel;
  98         } progress;
  99     } u;
 100 };
 101
 102 struct vlc_dialog_id
 103 {
 104     vlc_mutex_t             lock;
 105     vlc_cond_t              wait;
 106     enum dialog_type        i_type;
 107     void *                  p_context;
 108     int                     i_refcount;
 109     bool                    b_cancelled;
 110     bool                    b_answered;
 111     bool                    b_progress_indeterminate;
 112     char *                  psz_progress_text;
 113     struct dialog_answer    answer;
 114 };
 115
 116 struct dialog_i11e_context
 117 {
 118     vlc_dialog_provider *   p_provider;
 119     vlc_dialog_id *         p_id;
 120 };
 121
 122 static inline vlc_dialog_provider *
 123 get_dialog_provider(vlc_object_t *p_obj, bool b_check_interact)
 124 {
 125     if (b_check_interact && p_obj->obj.flags & OBJECT_FLAGS_NOINTERACT)
 126         return NULL;
 127
 128     vlc_dialog_provider *p_provider =
 129         libvlc_priv(p_obj->obj.libvlc)->p_dialog_provider;
 130     assert(p_provider != NULL);
 131     return p_provider;
 132 }
 133
 134 static void
 135 dialog_id_release(vlc_dialog_id *p_id)
 136 {
 137     if (p_id->answer.i_type == VLC_DIALOG_LOGIN)
 138     {
 139         free(p_id->answer.u.login.psz_username);
 140         free(p_id->answer.u.login.psz_password);
 141     }
 142     free(p_id->psz_progress_text);
 143     vlc_mutex_destroy(&p_id->lock);
 144     vlc_cond_destroy(&p_id->wait);
 145     free(p_id);
 146 }
 147
 148 int
 149 libvlc_InternalDialogInit(libvlc_int_t *p_libvlc)
 150 {
 151     assert(p_libvlc != NULL);
 152     vlc_dialog_provider *p_provider = malloc(sizeof(*p_provider));
 153     if (p_provider == NULL)
 154         return VLC_EGENERIC;
 155
 156     vlc_mutex_init(&p_provider->lock);
 157     vlc_array_init(&p_provider->dialog_array);
 158
 159     memset(&p_provider->cbs, 0, sizeof(p_provider->cbs));
 160     p_provider->p_cbs_data = NULL;
 161
 162     p_provider->pf_ext_update = NULL;
 163     p_provider->p_ext_data = NULL;
 164     libvlc_priv(p_libvlc)->p_dialog_provider = p_provider;
 165
 166     return VLC_SUCCESS;
 167 }
 168
 169 static void
 170 dialog_cancel_locked(vlc_dialog_provider *p_provider, vlc_dialog_id *p_id)
 171 {
 172     vlc_mutex_lock(&p_id->lock);
 173     if (p_id->b_cancelled || p_id->b_answered)
 174     {
 175         vlc_mutex_unlock(&p_id->lock);
 176         return;
 177     }
 178     p_id->b_cancelled = true;
 179     vlc_mutex_unlock(&p_id->lock);
 180
 181     p_provider->cbs.pf_cancel(p_provider->p_cbs_data, p_id);
 182 }
 183
 184 static vlc_dialog_id *
 185 dialog_add_locked(vlc_dialog_provider *p_provider, enum dialog_type i_type)
 186 {
 187     vlc_dialog_id *p_id = calloc(1, sizeof(*p_id));
 188
 189     if (p_id == NULL)
 190         return NULL;
 191     vlc_mutex_init(&p_id->lock);
 192     vlc_cond_init(&p_id->wait);
 193
 194     p_id->i_type = i_type;
 195     p_id->i_refcount = 2; /* provider and callbacks */
 196
 197     vlc_array_append(&p_provider->dialog_array, p_id);
 198     return p_id;
 199 }
 200
 201 static void
 202 dialog_remove_locked(vlc_dialog_provider *p_provider, vlc_dialog_id *p_id)
 203 {
 204     ssize_t i_idx = vlc_array_index_of_item(&p_provider->dialog_array, p_id);
 205     assert(i_idx >= 0);
 206     vlc_array_remove(&p_provider->dialog_array, i_idx);
 207
 208     vlc_mutex_lock(&p_id->lock);
 209     p_id->i_refcount--;
 210     if (p_id->i_refcount == 0)
 211     {
 212         vlc_mutex_unlock(&p_id->lock);
 213         dialog_id_release(p_id);
 214     }
 215     else
 216         vlc_mutex_unlock(&p_id->lock);
 217 }
 218
 219 static void
 220 dialog_clear_all_locked(vlc_dialog_provider *p_provider)
 221 {
 222     for (size_t i = 0; i < vlc_array_count(&p_provider->dialog_array); ++i)
 223     {
 224         vlc_dialog_id *p_id =
 225             vlc_array_item_at_index(&p_provider->dialog_array, i);
 226         dialog_cancel_locked(p_provider, p_id);
 227     }
 228 }
 229
 230 void
 231 libvlc_InternalDialogClean(libvlc_int_t *p_libvlc)
 232 {
 233     assert(p_libvlc != NULL);
 234     vlc_dialog_provider *p_provider = libvlc_priv(p_libvlc)->p_dialog_provider;
 235
 236     if (p_provider == NULL)
 237         return;
 238     vlc_mutex_lock(&p_provider->lock);
 239     dialog_clear_all_locked(p_provider);
 240     vlc_mutex_unlock(&p_provider->lock);
 241
 242     vlc_mutex_destroy(&p_provider->lock);
 243     free(p_provider);
 244     libvlc_priv(p_libvlc)->p_dialog_provider = NULL;
 245 }
 246
 247 #undef vlc_dialog_provider_set_callbacks
 248 void
 249 vlc_dialog_provider_set_callbacks(vlc_object_t *p_obj,
 250                                   const vlc_dialog_cbs *p_cbs, void *p_data)
 251 {
 252     assert(p_obj != NULL);
 253     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, false);
 254
 255     vlc_mutex_lock(&p_provider->lock);
 256     dialog_clear_all_locked(p_provider);
 257
 258     if (p_cbs == NULL)
 259     {
 260         memset(&p_provider->cbs, 0, sizeof(p_provider->cbs));
 261         p_provider->p_cbs_data = NULL;
 262     }
 263     else
 264     {
 265         p_provider->cbs = *p_cbs;
 266         p_provider->p_cbs_data = p_data;
 267     }
 268     vlc_mutex_unlock(&p_provider->lock);
 269 }
 270
 271 static void
 272 dialog_wait_interrupted(void *p_data)
 273 {
 274     struct dialog_i11e_context *p_context = p_data;
 275     vlc_dialog_provider *p_provider = p_context->p_provider;
 276     vlc_dialog_id *p_id = p_context->p_id;
 277
 278     vlc_mutex_lock(&p_provider->lock);
 279     dialog_cancel_locked(p_provider, p_id);
 280     vlc_mutex_unlock(&p_provider->lock);
 281
 282     vlc_mutex_lock(&p_id->lock);
 283     vlc_cond_signal(&p_id->wait);
 284     vlc_mutex_unlock(&p_id->lock);
 285 }
 286
 287 static int
 288 dialog_wait(vlc_dialog_provider *p_provider, vlc_dialog_id *p_id,
 289             enum dialog_type i_type, struct dialog_answer *p_answer)
 290 {
 291     struct dialog_i11e_context context = {
 292         .p_provider = p_provider,
 293         .p_id = p_id,
 294     };
 295     vlc_interrupt_register(dialog_wait_interrupted, &context);
 296
 297     vlc_mutex_lock(&p_id->lock);
 298     /* Wait for the dialog to be dismissed, interrupted or answered */
 299     while (!p_id->b_cancelled && !p_id->b_answered)
 300         vlc_cond_wait(&p_id->wait, &p_id->lock);
 301
 302     int i_ret;
 303     if (p_id->b_cancelled)
 304         i_ret = 0;
 305     else if (p_id->answer.i_type != i_type)
 306         i_ret = VLC_EGENERIC;
 307     else
 308     {
 309         i_ret = 1;
 310         memcpy(p_answer, &p_id->answer, sizeof(p_id->answer));
 311         memset(&p_id->answer, 0, sizeof(p_id->answer));
 312     }
 313
 314     vlc_mutex_unlock(&p_id->lock);
 315     vlc_interrupt_unregister();
 316
 317     vlc_mutex_lock(&p_provider->lock);
 318     dialog_remove_locked(p_provider, p_id);
 319     vlc_mutex_unlock(&p_provider->lock);
 320     return i_ret;
 321 }
 322
 323 static int
 324 dialog_display_error_va(vlc_dialog_provider *p_provider, const char *psz_title,
 325                         const char *psz_fmt, va_list ap)
 326 {
 327     vlc_mutex_lock(&p_provider->lock);
 328     if (p_provider->cbs.pf_display_error == NULL)
 329     {
 330         vlc_mutex_unlock(&p_provider->lock);
 331         return VLC_EGENERIC;
 332     }
 333
 334     char *psz_text;
 335     if (vasprintf(&psz_text, psz_fmt, ap) == -1)
 336     {
 337         vlc_mutex_unlock(&p_provider->lock);
 338         return VLC_ENOMEM;
 339     }
 340
 341     p_provider->cbs.pf_display_error(p_provider->p_cbs_data, psz_title, psz_text);
 342     free(psz_text);
 343     vlc_mutex_unlock(&p_provider->lock);
 344
 345     return VLC_SUCCESS;
 346 }
 347
 348 int
 349 vlc_dialog_display_error_va(vlc_object_t *p_obj, const char *psz_title,
 350                             const char *psz_fmt, va_list ap)
 351 {
 352     assert(p_obj != NULL && psz_title != NULL && psz_fmt != NULL);
 353     int i_ret;
 354     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, true);
 355
 356     if (p_provider != NULL)
 357         i_ret = dialog_display_error_va(p_provider, psz_title, psz_fmt, ap);
 358     else
 359         i_ret = VLC_EGENERIC;
 360
 361     if (i_ret != VLC_SUCCESS)
 362     {
 363         msg_Err(p_obj, "%s", psz_title);
 364         msg_GenericVa(p_obj, VLC_MSG_ERR, psz_fmt, ap);
 365     }
 366     return i_ret;
 367 }
 368
 369
 370 #undef vlc_dialog_display_error
 371 int
 372 vlc_dialog_display_error(vlc_object_t *p_obj, const char *psz_title,
 373                          const char *psz_fmt, ...)
 374 {
 375     assert(psz_fmt != NULL);
 376     va_list ap;
 377     va_start(ap, psz_fmt);
 378     int i_ret = vlc_dialog_display_error_va(p_obj, psz_title, psz_fmt, ap);
 379     va_end(ap);
 380     return i_ret;
 381 }
 382
 383 static int
 384 dialog_display_login_va(vlc_dialog_provider *p_provider, vlc_dialog_id **pp_id,
 385                         const char *psz_default_username, bool b_ask_store,
 386                         const char *psz_title, const char *psz_fmt, va_list ap)
 387 {
 388     vlc_mutex_lock(&p_provider->lock);
 389     if (p_provider->cbs.pf_display_login == NULL
 390      || p_provider->cbs.pf_cancel == NULL)
 391     {
 392         vlc_mutex_unlock(&p_provider->lock);
 393         return VLC_EGENERIC;
 394     }
 395
 396     char *psz_text;
 397     if (vasprintf(&psz_text, psz_fmt, ap) == -1)
 398     {
 399         vlc_mutex_unlock(&p_provider->lock);
 400         return VLC_ENOMEM;
 401     }
 402
 403     vlc_dialog_id *p_id = dialog_add_locked(p_provider, VLC_DIALOG_LOGIN);
 404     if (p_id == NULL)
 405     {
 406         free(psz_text);
 407         vlc_mutex_unlock(&p_provider->lock);
 408         return VLC_ENOMEM;
 409     }
 410     p_provider->cbs.pf_display_login(p_provider->p_cbs_data, p_id, psz_title,
 411                                      psz_text, psz_default_username, b_ask_store);
 412     free(psz_text);
 413     vlc_mutex_unlock(&p_provider->lock);
 414     *pp_id = p_id;
 415
 416     return VLC_SUCCESS;
 417 }
 418
 419 int
 420 vlc_dialog_wait_login_va(vlc_object_t *p_obj,  char **ppsz_username,
 421                          char **ppsz_password, bool *p_store,
 422                          const char *psz_default_username,
 423                          const char *psz_title, const char *psz_fmt, va_list ap)
 424 {
 425     assert(p_obj != NULL && ppsz_username != NULL && ppsz_password != NULL
 426         && psz_fmt != NULL && psz_title != NULL);
 427
 428     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, true);
 429     if (p_provider == NULL)
 430         return VLC_EGENERIC;
 431
 432     vlc_dialog_id *p_id;
 433     int i_ret = dialog_display_login_va(p_provider, &p_id, psz_default_username,
 434                                         p_store != NULL, psz_title, psz_fmt, ap);
 435     if (i_ret < 0 || p_id == NULL)
 436         return i_ret;
 437
 438     struct dialog_answer answer;
 439     i_ret = dialog_wait(p_provider, p_id, VLC_DIALOG_LOGIN, &answer);
 440     if (i_ret <= 0)
 441         return i_ret;
 442
 443     *ppsz_username = answer.u.login.psz_username;
 444     *ppsz_password = answer.u.login.psz_password;
 445     if (p_store != NULL)
 446         *p_store = answer.u.login.b_store;
 447
 448     return 1;
 449 }
 450
 451 #undef vlc_dialog_wait_login
 452 int
 453 vlc_dialog_wait_login(vlc_object_t *p_obj,  char **ppsz_username,
 454                       char **ppsz_password, bool *p_store,
 455                       const char *psz_default_username, const char *psz_title,
 456                       const char *psz_fmt, ...)
 457 {
 458     assert(psz_fmt != NULL);
 459     va_list ap;
 460     va_start(ap, psz_fmt);
 461     int i_ret = vlc_dialog_wait_login_va(p_obj, ppsz_username, ppsz_password,
 462                                          p_store,psz_default_username,
 463                                          psz_title, psz_fmt, ap);
 464     va_end(ap);
 465     return i_ret;
 466 }
 467
 468 static int
 469 dialog_display_question_va(vlc_dialog_provider *p_provider, vlc_dialog_id **pp_id,
 470                            vlc_dialog_question_type i_type,
 471                            const char *psz_cancel, const char *psz_action1,
 472                            const char *psz_action2, const char *psz_title,
 473                            const char *psz_fmt, va_list ap)
 474 {
 475     vlc_mutex_lock(&p_provider->lock);
 476     if (p_provider->cbs.pf_display_question == NULL
 477      || p_provider->cbs.pf_cancel == NULL)
 478     {
 479         vlc_mutex_unlock(&p_provider->lock);
 480         return VLC_EGENERIC;
 481     }
 482
 483     char *psz_text;
 484     if (vasprintf(&psz_text, psz_fmt, ap) == -1)
 485     {
 486         vlc_mutex_unlock(&p_provider->lock);
 487         return VLC_ENOMEM;
 488     }
 489
 490     vlc_dialog_id *p_id = dialog_add_locked(p_provider, VLC_DIALOG_QUESTION);
 491     if (p_id == NULL)
 492     {
 493         free(psz_text);
 494         vlc_mutex_unlock(&p_provider->lock);
 495         return VLC_ENOMEM;
 496     }
 497     p_provider->cbs.pf_display_question(p_provider->p_cbs_data, p_id, psz_title,
 498                                         psz_text, i_type, psz_cancel, psz_action1,
 499                                         psz_action2);
 500     free(psz_text);
 501     vlc_mutex_unlock(&p_provider->lock);
 502     *pp_id = p_id;
 503
 504     return VLC_SUCCESS;
 505 }
 506
 507 int
 508 vlc_dialog_wait_question_va(vlc_object_t *p_obj,
 509                             vlc_dialog_question_type i_type,
 510                             const char *psz_cancel, const char *psz_action1,
 511                             const char *psz_action2, const char *psz_title,
 512                             const char *psz_fmt, va_list ap)
 513 {
 514     assert(p_obj != NULL && psz_fmt != NULL && psz_title != NULL
 515         && psz_cancel != NULL);
 516
 517     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, true);
 518     if (p_provider == NULL)
 519         return VLC_EGENERIC;
 520
 521     vlc_dialog_id *p_id;
 522     int i_ret = dialog_display_question_va(p_provider, &p_id, i_type,
 523                                            psz_cancel, psz_action1,
 524                                            psz_action2, psz_title, psz_fmt, ap);
 525     if (i_ret < 0 || p_id == NULL)
 526         return i_ret;
 527
 528     struct dialog_answer answer;
 529     i_ret = dialog_wait(p_provider, p_id, VLC_DIALOG_QUESTION, &answer);
 530     if (i_ret <= 0)
 531         return i_ret;
 532
 533     if (answer.u.question.i_action != 1 && answer.u.question.i_action != 2)
 534         return VLC_EGENERIC;
 535
 536     return answer.u.question.i_action;
 537 }
 538
 539 #undef vlc_dialog_wait_question
 540 int
 541 vlc_dialog_wait_question(vlc_object_t *p_obj,
 542                          vlc_dialog_question_type i_type,
 543                          const char *psz_cancel, const char *psz_action1,
 544                          const char *psz_action2, const char *psz_title,
 545                          const char *psz_fmt, ...)
 546 {
 547     assert(psz_fmt != NULL);
 548     va_list ap;
 549     va_start(ap, psz_fmt);
 550     int i_ret = vlc_dialog_wait_question_va(p_obj, i_type, psz_cancel,
 551                                             psz_action1, psz_action2, psz_title,
 552                                             psz_fmt, ap);
 553     va_end(ap);
 554     return i_ret;
 555 }
 556
 557 static int
 558 display_progress_va(vlc_dialog_provider *p_provider, vlc_dialog_id **pp_id,
 559                     bool b_indeterminate, float f_position,
 560                     const char *psz_cancel, const char *psz_title,
 561                     const char *psz_fmt, va_list ap)
 562 {
 563     vlc_mutex_lock(&p_provider->lock);
 564     if (p_provider->cbs.pf_display_progress == NULL
 565      || p_provider->cbs.pf_update_progress == NULL
 566      || p_provider->cbs.pf_cancel == NULL)
 567     {
 568         vlc_mutex_unlock(&p_provider->lock);
 569         return VLC_EGENERIC;
 570     }
 571
 572     char *psz_text;
 573     if (vasprintf(&psz_text, psz_fmt, ap) == -1)
 574     {
 575         vlc_mutex_unlock(&p_provider->lock);
 576         return VLC_ENOMEM;
 577     }
 578
 579     vlc_dialog_id *p_id = dialog_add_locked(p_provider, VLC_DIALOG_PROGRESS);
 580     if (p_id == NULL)
 581     {
 582         free(psz_text);
 583         vlc_mutex_unlock(&p_provider->lock);
 584         return VLC_ENOMEM;
 585     }
 586     p_id->b_progress_indeterminate = b_indeterminate;
 587     p_id->psz_progress_text = psz_text;
 588     p_provider->cbs.pf_display_progress(p_provider->p_cbs_data, p_id, psz_title,
 589                                         psz_text, b_indeterminate, f_position,
 590                                         psz_cancel);
 591     vlc_mutex_unlock(&p_provider->lock);
 592     *pp_id = p_id;
 593
 594     return VLC_SUCCESS;
 595 }
 596
 597 vlc_dialog_id *
 598 vlc_dialog_display_progress_va(vlc_object_t *p_obj, bool b_indeterminate,
 599                                float f_position, const char *psz_cancel,
 600                                const char *psz_title, const char *psz_fmt,
 601                                va_list ap)
 602 {
 603     assert(p_obj != NULL && psz_title != NULL && psz_fmt != NULL);
 604
 605     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, true);
 606     if (p_provider == NULL)
 607         return NULL;
 608     vlc_dialog_id *p_id;
 609     int i_ret = display_progress_va(p_provider, &p_id, b_indeterminate,
 610                                     f_position, psz_cancel, psz_title, psz_fmt,
 611                                     ap);
 612     return i_ret == VLC_SUCCESS ? p_id : NULL;
 613 }
 614
 615 #undef vlc_dialog_display_progress
 616 vlc_dialog_id *
 617 vlc_dialog_display_progress(vlc_object_t *p_obj, bool b_indeterminate,
 618                             float f_position, const char *psz_cancel,
 619                             const char *psz_title, const char *psz_fmt, ...)
 620 {
 621     assert(psz_fmt != NULL);
 622     va_list ap;
 623     va_start(ap, psz_fmt);
 624     vlc_dialog_id *p_id =
 625         vlc_dialog_display_progress_va(p_obj, b_indeterminate, f_position,
 626                                        psz_cancel, psz_title, psz_fmt, ap);
 627     va_end(ap);
 628     return p_id;
 629 }
 630
 631 static int
 632 dialog_update_progress(vlc_object_t *p_obj, vlc_dialog_id *p_id, float f_value,
 633                        char *psz_text)
 634 {
 635     assert(p_obj != NULL && p_id != NULL);
 636     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, false);
 637
 638     vlc_mutex_lock(&p_provider->lock);
 639     if (p_provider->cbs.pf_update_progress == NULL ||
 640         vlc_dialog_is_cancelled(p_obj, p_id))
 641     {
 642         vlc_mutex_unlock(&p_provider->lock);
 643         free(psz_text);
 644         return VLC_EGENERIC;
 645     }
 646
 647     if (p_id->b_progress_indeterminate)
 648     {
 649         vlc_mutex_unlock(&p_provider->lock);
 650         free(psz_text);
 651         return VLC_EGENERIC;
 652     }
 653     if (psz_text != NULL)
 654     {
 655         free(p_id->psz_progress_text);
 656         p_id->psz_progress_text = psz_text;
 657     }
 658     p_provider->cbs.pf_update_progress(p_provider->p_cbs_data, p_id, f_value,
 659                                        p_id->psz_progress_text);
 660
 661     vlc_mutex_unlock(&p_provider->lock);
 662     return VLC_SUCCESS;
 663 }
 664
 665 #undef vlc_dialog_update_progress
 666 int
 667 vlc_dialog_update_progress(vlc_object_t *p_obj, vlc_dialog_id *p_id,
 668                            float f_value)
 669 {
 670     return dialog_update_progress(p_obj, p_id, f_value, NULL);
 671 }
 672
 673 int
 674 vlc_dialog_update_progress_text_va(vlc_object_t *p_obj, vlc_dialog_id *p_id,
 675                                    float f_value, const char *psz_fmt,
 676                                    va_list ap)
 677 {
 678     assert(psz_fmt != NULL);
 679
 680     char *psz_text;
 681     if (vasprintf(&psz_text, psz_fmt, ap) == -1)
 682         return VLC_ENOMEM;
 683     return dialog_update_progress(p_obj, p_id, f_value, psz_text);
 684 }
 685
 686 #undef vlc_dialog_update_progress_text
 687 int
 688 vlc_dialog_update_progress_text(vlc_object_t *p_obj, vlc_dialog_id *p_id,
 689                                 float f_value, const char *psz_fmt, ...)
 690 {
 691     assert(psz_fmt != NULL);
 692     va_list ap;
 693     va_start(ap, psz_fmt);
 694     int i_ret = vlc_dialog_update_progress_text_va(p_obj, p_id, f_value,
 695                                                    psz_fmt, ap);
 696     va_end(ap);
 697     return i_ret;
 698 }
 699
 700 #undef vlc_dialog_release
 701 void
 702 vlc_dialog_release(vlc_object_t *p_obj, vlc_dialog_id *p_id)
 703 {
 704     assert(p_obj != NULL && p_id != NULL);
 705     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, false);
 706
 707     vlc_mutex_lock(&p_provider->lock);
 708     dialog_cancel_locked(p_provider, p_id);
 709     dialog_remove_locked(p_provider, p_id);
 710     vlc_mutex_unlock(&p_provider->lock);
 711 }
 712
 713 #undef vlc_dialog_is_cancelled
 714 bool
 715 vlc_dialog_is_cancelled(vlc_object_t *p_obj, vlc_dialog_id *p_id)
 716 {
 717     (void) p_obj;
 718     assert(p_id != NULL);
 719
 720     vlc_mutex_lock(&p_id->lock);
 721     bool b_cancelled = p_id->b_cancelled;
 722     vlc_mutex_unlock(&p_id->lock);
 723     return b_cancelled;
 724 }
 725
 726 void
 727 vlc_dialog_id_set_context(vlc_dialog_id *p_id, void *p_context)
 728 {
 729     vlc_mutex_lock(&p_id->lock);
 730     p_id->p_context = p_context;
 731     vlc_mutex_unlock(&p_id->lock);
 732 }
 733
 734 void *
 735 vlc_dialog_id_get_context(vlc_dialog_id *p_id)
 736 {
 737     assert(p_id != NULL);
 738     vlc_mutex_lock(&p_id->lock);
 739     void *p_context = p_id->p_context;
 740     vlc_mutex_unlock(&p_id->lock);
 741     return p_context;
 742 }
 743
 744 static int
 745 dialog_id_post(vlc_dialog_id *p_id, struct dialog_answer *p_answer)
 746 {
 747     vlc_mutex_lock(&p_id->lock);
 748     if (p_answer == NULL)
 749     {
 750         p_id->b_cancelled = true;
 751     }
 752     else
 753     {
 754         p_id->answer = *p_answer;
 755         p_id->b_answered = true;
 756     }
 757     p_id->i_refcount--;
 758     if (p_id->i_refcount > 0)
 759     {
 760         vlc_cond_signal(&p_id->wait);
 761         vlc_mutex_unlock(&p_id->lock);
 762     }
 763     else
 764     {
 765         vlc_mutex_unlock(&p_id->lock);
 766         dialog_id_release(p_id);
 767     }
 768     return VLC_SUCCESS;
 769 }
 770
 771 int
 772 vlc_dialog_id_post_login(vlc_dialog_id *p_id, const char *psz_username,
 773                          const char *psz_password, bool b_store)
 774 {
 775     assert(p_id != NULL && psz_username != NULL && psz_password != NULL);
 776
 777     struct dialog_answer answer = {
 778         .i_type = VLC_DIALOG_LOGIN,
 779         .u.login = {
 780             .b_store = b_store,
 781             .psz_username = strdup(psz_username),
 782             .psz_password = strdup(psz_password),
 783         },
 784     };
 785     if (answer.u.login.psz_username == NULL
 786      || answer.u.login.psz_password == NULL)
 787     {
 788         free(answer.u.login.psz_username);
 789         free(answer.u.login.psz_password);
 790         dialog_id_post(p_id, NULL);
 791         return VLC_ENOMEM;
 792     }
 793
 794     return dialog_id_post(p_id, &answer);
 795 }
 796
 797 int
 798 vlc_dialog_id_post_action(vlc_dialog_id *p_id, int i_action)
 799 {
 800     assert(p_id != NULL);
 801
 802     struct dialog_answer answer = {
 803         .i_type = VLC_DIALOG_QUESTION,
 804         .u.question = { .i_action = i_action },
 805     };
 806
 807     return dialog_id_post(p_id, &answer);
 808 }
 809
 810 int
 811 vlc_dialog_id_dismiss(vlc_dialog_id *p_id)
 812 {
 813     return dialog_id_post(p_id, NULL);
 814 }
 815
 816 #undef vlc_dialog_provider_set_ext_callback
 817 void
 818 vlc_dialog_provider_set_ext_callback(vlc_object_t *p_obj,
 819                                      vlc_dialog_ext_update_cb pf_update,
 820                                      void *p_data)
 821 {
 822     assert(p_obj != NULL);
 823     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, false);
 824
 825     vlc_mutex_lock(&p_provider->lock);
 826
 827     p_provider->pf_ext_update = pf_update;
 828     p_provider->p_ext_data = p_data;
 829
 830     vlc_mutex_unlock(&p_provider->lock);
 831 }
 832
 833 #undef vlc_ext_dialog_update
 834 int
 835 vlc_ext_dialog_update(vlc_object_t *p_obj, extension_dialog_t *p_ext_dialog)
 836 {
 837     assert(p_obj != NULL);
 838     vlc_dialog_provider *p_provider = get_dialog_provider(p_obj, false);
 839
 840     vlc_mutex_lock(&p_provider->lock);
 841     if (p_provider->pf_ext_update == NULL)
 842     {
 843         vlc_mutex_unlock(&p_provider->lock);
 844         return VLC_EGENERIC;
 845     }
 846     p_provider->pf_ext_update(p_ext_dialog, p_provider->p_ext_data);
 847     vlc_mutex_unlock(&p_provider->lock);
 848     return VLC_SUCCESS;
 849 }