apps/plugin.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 Björn Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "plugin.h"
  22 #include <ctype.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include "debug.h"
  26 #include "i2c.h"
  27 #include "lang.h"
  28 #include "led.h"
  29 #include "keyboard.h"
  30 #include "buffer.h"
  31 #include "backlight.h"
  32 #include "sound_menu.h"
  33 #include "mp3data.h"
  34 #include "powermgmt.h"
  35 #include "splash.h"
  36 #include "logf.h"
  37 #include "option_select.h"
  38 #include "talk.h"
  39 #include "version.h"
  40 #include "storage.h"
  41 #include "pcmbuf.h"
  42 #include "errno.h"
  43 #include "diacritic.h"
  44 #include "filefuncs.h"
  45 #include "load_code.h"
  46
  47 #if CONFIG_CHARGING
  48 #include "power.h"
  49 #endif
  50
  51 #ifdef HAVE_LCD_BITMAP
  52 #include "scrollbar.h"
  53 #include "peakmeter.h"
  54 #include "bmp.h"
  55 #include "bidi.h"
  56 #endif
  57
  58 #ifdef USB_ENABLE_HID
  59 #include "usbstack/usb_hid.h"
  60 #endif
  61
  62 #if (CONFIG_PLATFORM & PLATFORM_SDL)
  63 #define PREFIX(_x_) sim_ ## _x_
  64 #else
  65 #define PREFIX
  66 #endif
  67
  68 #if defined(HAVE_PLUGIN_CHECK_OPEN_CLOSE) && (MAX_OPEN_FILES>32)
  69 #warning "MAX_OPEN_FILES>32, disabling plugin file open/close checking"
  70 #undef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  71 #endif
  72
  73 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  74 static unsigned int open_files;
  75 #endif
  76
  77 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
  78 static unsigned char pluginbuf[PLUGIN_BUFFER_SIZE];
  79 void sim_lcd_ex_init(unsigned long (*getpixel)(int, int));
  80 void sim_lcd_ex_update_rect(int x, int y, int width, int height);
  81 #else
  82 extern unsigned char pluginbuf[];
  83 #include "bitswap.h"
  84 #endif
  85
  86 /* for actual plugins only, not for codecs */
  87 static int  plugin_size = 0;
  88 static bool (*pfn_tsr_exit)(bool reenter) = NULL; /* TSR exit callback */
  89 static char current_plugin[MAX_PATH];
  90 /* NULL if no plugin is loaded, otherwise the handle that lc_open() returned */
  91 static void *current_plugin_handle;
  92
  93 char *plugin_get_current_filename(void);
  94
  95 /* Some wrappers used to monitor open and close and detect leaks*/
  96 static int open_wrapper(const char* pathname, int flags, ...);
  97 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  98 static int close_wrapper(int fd);
  99 static int creat_wrapper(const char *pathname, mode_t mode);
 100 #endif
 101
 102 static const struct plugin_api rockbox_api = {
 103
 104     /* lcd */
 105 #ifdef HAVE_LCD_CONTRAST
 106     lcd_set_contrast,
 107 #endif
 108     lcd_update,
 109     lcd_clear_display,
 110     lcd_getstringsize,
 111     lcd_putsxy,
 112     lcd_putsxyf,
 113     lcd_puts,
 114     lcd_putsf,
 115     lcd_puts_scroll,
 116     lcd_stop_scroll,
 117 #ifdef HAVE_LCD_CHARCELLS
 118     lcd_define_pattern,
 119     lcd_get_locked_pattern,
 120     lcd_unlock_pattern,
 121     lcd_putc,
 122     lcd_put_cursor,
 123     lcd_remove_cursor,
 124     lcd_icon,
 125     lcd_double_height,
 126 #else
 127     &lcd_framebuffer[0][0],
 128     lcd_update_rect,
 129     lcd_set_drawmode,
 130     lcd_get_drawmode,
 131     lcd_setfont,
 132     lcd_drawpixel,
 133     lcd_drawline,
 134     lcd_hline,
 135     lcd_vline,
 136     lcd_drawrect,
 137     lcd_fillrect,
 138     lcd_mono_bitmap_part,
 139     lcd_mono_bitmap,
 140 #if LCD_DEPTH > 1
 141     lcd_set_foreground,
 142     lcd_get_foreground,
 143     lcd_set_background,
 144     lcd_get_background,
 145     lcd_bitmap_part,
 146     lcd_bitmap,
 147     lcd_get_backdrop,
 148     lcd_set_backdrop,
 149 #endif
 150 #if LCD_DEPTH == 16
 151     lcd_bitmap_transparent_part,
 152     lcd_bitmap_transparent,
 153 #if MEMORYSIZE > 2
 154     lcd_blit_yuv,
 155 #if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
 156     || defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
 157     || defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
 158     || defined(TOSHIBA_GIGABEAT_S)
 159     lcd_yuv_set_options,
 160 #endif
 161 #endif /* MEMORYSIZE > 2 */
 162 #elif (LCD_DEPTH < 4) && (CONFIG_PLATFORM & PLATFORM_NATIVE)
 163     lcd_blit_mono,
 164     lcd_blit_grey_phase,
 165 #endif /* LCD_DEPTH */
 166 #if defined(HAVE_LCD_MODES) && (HAVE_LCD_MODES & LCD_MODE_PAL256)
 167     lcd_blit_pal256,
 168     lcd_pal256_update_pal,
 169 #endif
 170     lcd_puts_style,
 171     lcd_puts_scroll_style,
 172 #ifdef HAVE_LCD_INVERT
 173     lcd_set_invert_display,
 174 #endif /* HAVE_LCD_INVERT */
 175 #if defined(HAVE_LCD_MODES)
 176     lcd_set_mode,
 177 #endif
 178 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 179     &button_queue,
 180 #endif
 181     bidi_l2v,
 182 #ifdef HAVE_LCD_BITMAP
 183     is_diacritic,
 184 #endif
 185     font_get_bits,
 186     font_load,
 187     font_get,
 188     font_getstringsize,
 189     font_get_width,
 190     screen_clear_area,
 191     gui_scrollbar_draw,
 192 #endif /* HAVE_LCD_BITMAP */
 193     get_codepage_name,
 194
 195     backlight_on,
 196     backlight_off,
 197     backlight_set_timeout,
 198 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
 199     backlight_set_brightness,
 200 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
 201
 202 #if CONFIG_CHARGING
 203     backlight_set_timeout_plugged,
 204 #endif
 205     is_backlight_on,
 206     splash,
 207     splashf,
 208
 209 #ifdef HAVE_REMOTE_LCD
 210     /* remote lcd */
 211     lcd_remote_set_contrast,
 212     lcd_remote_clear_display,
 213     lcd_remote_puts,
 214     lcd_remote_puts_scroll,
 215     lcd_remote_stop_scroll,
 216     lcd_remote_set_drawmode,
 217     lcd_remote_get_drawmode,
 218     lcd_remote_setfont,
 219     lcd_remote_getstringsize,
 220     lcd_remote_drawpixel,
 221     lcd_remote_drawline,
 222     lcd_remote_hline,
 223     lcd_remote_vline,
 224     lcd_remote_drawrect,
 225     lcd_remote_fillrect,
 226     lcd_remote_mono_bitmap_part,
 227     lcd_remote_mono_bitmap,
 228     lcd_remote_putsxy,
 229     lcd_remote_puts_style,
 230     lcd_remote_puts_scroll_style,
 231     &lcd_remote_framebuffer[0][0],
 232     lcd_remote_update,
 233     lcd_remote_update_rect,
 234
 235     remote_backlight_on,
 236     remote_backlight_off,
 237     remote_backlight_set_timeout,
 238 #if CONFIG_CHARGING
 239     remote_backlight_set_timeout_plugged,
 240 #endif
 241 #endif /* HAVE_REMOTE_LCD */
 242 #if NB_SCREENS == 2
 243     {&screens[SCREEN_MAIN], &screens[SCREEN_REMOTE]},
 244 #else
 245     {&screens[SCREEN_MAIN]},
 246 #endif
 247 #if defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
 248     lcd_remote_set_foreground,
 249     lcd_remote_get_foreground,
 250     lcd_remote_set_background,
 251     lcd_remote_get_background,
 252     lcd_remote_bitmap_part,
 253     lcd_remote_bitmap,
 254 #endif
 255     viewport_set_defaults,
 256 #ifdef HAVE_LCD_BITMAP
 257     viewportmanager_theme_enable,
 258     viewportmanager_theme_undo,
 259 #endif
 260
 261     /* list */
 262     gui_synclist_init,
 263     gui_synclist_set_nb_items,
 264     gui_synclist_set_icon_callback,
 265     gui_synclist_get_nb_items,
 266     gui_synclist_get_sel_pos,
 267     gui_synclist_draw,
 268     gui_synclist_select_item,
 269     gui_synclist_add_item,
 270     gui_synclist_del_item,
 271     gui_synclist_limit_scroll,
 272     gui_synclist_do_button,
 273     gui_synclist_set_title,
 274     gui_syncyesno_run,
 275     simplelist_info_init,
 276     simplelist_show_list,
 277
 278     /* button */
 279     button_get,
 280     button_get_w_tmo,
 281     button_status,
 282 #ifdef HAVE_BUTTON_DATA
 283     button_get_data,
 284     button_status_wdata,
 285 #endif
 286     button_clear_queue,
 287     button_queue_count,
 288 #ifdef HAS_BUTTON_HOLD
 289     button_hold,
 290 #endif
 291 #ifdef HAVE_TOUCHSCREEN
 292     touchscreen_set_mode,
 293 #endif
 294
 295 #ifdef HAVE_BUTTON_LIGHT
 296     buttonlight_set_timeout,
 297     buttonlight_off,
 298     buttonlight_on,
 299 #ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
 300     buttonlight_set_brightness,
 301 #endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
 302 #endif /* HAVE_BUTTON_LIGHT */
 303
 304     /* file */
 305     open_utf8,
 306     (open_func)open_wrapper,
 307 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 308     close_wrapper,
 309 #else
 310     PREFIX(close),
 311 #endif
 312     (read_func)PREFIX(read),
 313     PREFIX(lseek),
 314 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 315     (creat_func)creat_wrapper,
 316 #else
 317     (creat_func)PREFIX(creat),
 318 #endif
 319     (write_func)PREFIX(write),
 320     PREFIX(remove),
 321     PREFIX(rename),
 322     PREFIX(ftruncate),
 323     PREFIX(filesize),
 324     fdprintf,
 325     read_line,
 326     settings_parseline,
 327     storage_sleep,
 328     storage_spin,
 329     storage_spindown,
 330 #if USING_STORAGE_CALLBACK
 331     register_storage_idle_func,
 332     unregister_storage_idle_func,
 333 #endif /* USING_STORAGE_CALLBACK */
 334     reload_directory,
 335     create_numbered_filename,
 336     file_exists,
 337     strip_extension,
 338     crc_32,
 339
 340     /* dir */
 341     opendir,
 342     closedir,
 343     readdir,
 344     mkdir,
 345     rmdir,
 346     dir_exists,
 347     dir_get_info,
 348
 349     /* kernel/ system */
 350 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
 351     __div0,
 352 #endif
 353     sleep,
 354     yield,
 355     &current_tick,
 356     default_event_handler,
 357     default_event_handler_ex,
 358     create_thread,
 359     thread_exit,
 360     thread_wait,
 361 #if (CONFIG_CODEC == SWCODEC)
 362     thread_thaw,
 363 #ifdef HAVE_PRIORITY_SCHEDULING
 364     thread_set_priority,
 365 #endif
 366     mutex_init,
 367     mutex_lock,
 368     mutex_unlock,
 369 #endif
 370
 371     reset_poweroff_timer,
 372 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 373     system_memory_guard,
 374     &cpu_frequency,
 375
 376 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 377 #ifdef CPU_BOOST_LOGGING
 378     cpu_boost_,
 379 #else
 380     cpu_boost,
 381 #endif
 382 #endif /* HAVE_ADJUSTABLE_CPU_FREQ */
 383 #endif /* PLATFORM_NATIVE */
 384 #ifdef HAVE_SCHEDULER_BOOSTCTRL
 385     trigger_cpu_boost,
 386     cancel_cpu_boost,
 387 #endif
 388
 389     cpucache_flush,
 390     cpucache_invalidate,
 391
 392     lc_open,
 393     lc_open_from_mem,
 394     lc_get_header,
 395     lc_close,
 396
 397     timer_register,
 398     timer_unregister,
 399     timer_set_period,
 400
 401     queue_init,
 402     queue_delete,
 403     queue_post,
 404     queue_wait_w_tmo,
 405 #if CONFIG_CODEC == SWCODEC
 406     queue_enable_queue_send,
 407     queue_empty,
 408     queue_wait,
 409     queue_send,
 410     queue_reply,
 411 #endif
 412     usb_acknowledge,
 413 #ifdef USB_ENABLE_HID
 414     usb_hid_send,
 415 #endif
 416 #ifdef RB_PROFILE
 417     profile_thread,
 418     profstop,
 419     __cyg_profile_func_enter,
 420     __cyg_profile_func_exit,
 421 #endif
 422     add_event,
 423     remove_event,
 424     send_event,
 425
 426 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
 427     /* special simulator hooks */
 428 #if defined(HAVE_LCD_BITMAP) && LCD_DEPTH < 8
 429     sim_lcd_ex_init,
 430     sim_lcd_ex_update_rect,
 431 #endif
 432 #endif
 433
 434     /* strings and memory */
 435     snprintf,
 436     vsnprintf,
 437     strcpy,
 438     strlcpy,
 439     strlen,
 440     strrchr,
 441     strcmp,
 442     strncmp,
 443     strcasecmp,
 444     strncasecmp,
 445     memset,
 446     memcpy,
 447     memmove,
 448 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 449     _ctype_,
 450 #endif
 451     atoi,
 452     strchr,
 453     strcat,
 454     strlcat,
 455     memchr,
 456     memcmp,
 457     strcasestr,
 458     strtok_r,
 459     /* unicode stuff */
 460     utf8decode,
 461     iso_decode,
 462     utf16LEdecode,
 463     utf16BEdecode,
 464     utf8encode,
 465     utf8length,
 466     utf8seek,
 467
 468     /* sound */
 469     sound_set,
 470     sound_default,
 471     sound_min,
 472     sound_max,
 473     sound_unit,
 474     sound_val2phys,
 475 #ifdef AUDIOHW_HAVE_EQ
 476     sound_enum_hw_eq_band_setting,
 477 #endif
 478 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 479     mp3_play_data,
 480     mp3_play_pause,
 481     mp3_play_stop,
 482     mp3_is_playing,
 483 #if CONFIG_CODEC != SWCODEC
 484     bitswap,
 485 #endif
 486 #endif
 487 #if CONFIG_CODEC == SWCODEC
 488     &audio_master_sampr_list[0],
 489     &hw_freq_sampr[0],
 490     pcm_apply_settings,
 491     pcm_play_data,
 492     pcm_play_stop,
 493     pcm_set_frequency,
 494     pcm_is_playing,
 495     pcm_is_paused,
 496     pcm_play_pause,
 497     pcm_get_bytes_waiting,
 498     pcm_calculate_peaks,
 499     pcm_get_peak_buffer,
 500     pcm_play_lock,
 501     pcm_play_unlock,
 502     pcmbuf_beep,
 503 #ifdef HAVE_RECORDING
 504     &rec_freq_sampr[0],
 505     pcm_init_recording,
 506     pcm_close_recording,
 507     pcm_record_data,
 508     pcm_stop_recording,
 509     pcm_calculate_rec_peaks,
 510     audio_set_recording_gain,
 511 #endif /* HAVE_RECORDING */
 512 #if INPUT_SRC_CAPS != 0
 513     audio_set_output_source,
 514     audio_set_input_source,
 515 #endif
 516     dsp_set_crossfeed,
 517     dsp_set_eq,
 518     dsp_dither_enable,
 519     dsp_configure,
 520     dsp_process,
 521     dsp_input_count,
 522     dsp_output_count,
 523 #endif /* CONFIG_CODEC == SWCODEC */
 524
 525     /* playback control */
 526     playlist_amount,
 527     playlist_resume,
 528     playlist_start,
 529     playlist_add,
 530     playlist_sync,
 531     playlist_remove_all_tracks,
 532     playlist_create,
 533     playlist_insert_track,
 534     playlist_insert_directory,
 535     playlist_shuffle,
 536     audio_play,
 537     audio_stop,
 538     audio_pause,
 539     audio_resume,
 540     audio_next,
 541     audio_prev,
 542     audio_ff_rewind,
 543     audio_next_track,
 544     audio_status,
 545     audio_current_track,
 546     audio_flush_and_reload_tracks,
 547     audio_get_file_pos,
 548 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 549     mpeg_get_last_header,
 550 #endif
 551 #if ((CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) || \
 552      (CONFIG_CODEC == SWCODEC)) && defined (HAVE_PITCHSCREEN)
 553     sound_set_pitch,
 554 #endif
 555
 556 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 557     /* MAS communication */
 558     mas_readmem,
 559     mas_writemem,
 560     mas_readreg,
 561     mas_writereg,
 562 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 563     mas_codec_writereg,
 564     mas_codec_readreg,
 565     i2c_begin,
 566     i2c_end,
 567     i2c_write,
 568 #endif
 569 #endif /* !SIMULATOR && CONFIG_CODEC != SWCODEC */
 570
 571     /* menu */
 572     do_menu,
 573     /* statusbars */
 574     &statusbars,
 575     gui_syncstatusbar_draw,
 576
 577     /* options */
 578     get_settings_list,
 579     find_setting,
 580     option_screen,
 581     set_option,
 582     set_bool_options,
 583     set_int,
 584     set_bool,
 585 #ifdef HAVE_LCD_COLOR
 586     set_color,
 587 #endif
 588
 589     /* action handling */
 590     get_custom_action,
 591     get_action,
 592 #ifdef HAVE_TOUCHSCREEN
 593     action_get_touchscreen_press,
 594 #endif
 595     action_userabort,
 596
 597     /* power */
 598     battery_level,
 599     battery_level_safe,
 600     battery_time,
 601 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 602     battery_voltage,
 603 #endif
 604 #if CONFIG_CHARGING
 605     charger_inserted,
 606 # if CONFIG_CHARGING >= CHARGING_MONITOR
 607     charging_state,
 608 # endif
 609 #endif
 610 #ifdef HAVE_USB_POWER
 611     usb_powered,
 612 #endif
 613
 614     /* misc */
 615 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 616     &errno,
 617 #endif
 618     srand,
 619     rand,
 620     (qsort_func)qsort,
 621     kbd_input,
 622     get_time,
 623     set_time,
 624 #if CONFIG_RTC
 625     mktime,
 626 #endif
 627     plugin_get_buffer,
 628     plugin_get_audio_buffer,
 629     plugin_tsr,
 630     plugin_get_current_filename,
 631 #if defined(DEBUG) || defined(SIMULATOR)
 632     debugf,
 633 #endif
 634 #ifdef ROCKBOX_HAS_LOGF
 635     _logf,
 636 #endif
 637     &global_settings,
 638     &global_status,
 639     talk_disable,
 640 #if CONFIG_CODEC == SWCODEC
 641     codec_thread_do_callback,
 642     codec_load_file,
 643     get_codec_filename,
 644     find_array_ptr,
 645     remove_array_ptr,
 646     round_value_to_list32,
 647 #endif /* CONFIG_CODEC == SWCODEC */
 648     get_metadata,
 649     mp3info,
 650     count_mp3_frames,
 651     create_xing_header,
 652     find_next_frame,
 653 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 654     peak_meter_scale_value,
 655     peak_meter_set_use_dbfs,
 656     peak_meter_get_use_dbfs,
 657 #endif
 658 #ifdef HAVE_LCD_BITMAP
 659     read_bmp_file,
 660     read_bmp_fd,
 661 #ifdef HAVE_JPEG
 662     read_jpeg_file,
 663     read_jpeg_fd,
 664 #endif
 665     screen_dump_set_hook,
 666 #endif
 667     show_logo,
 668     tree_get_context,
 669     set_current_file,
 670     set_dirfilter,
 671
 672 #ifdef HAVE_WHEEL_POSITION
 673     wheel_status,
 674     wheel_send_events,
 675 #endif
 676
 677 #ifdef IRIVER_H100_SERIES
 678     /* Routines for the iriver_flash -plugin. */
 679     detect_original_firmware,
 680     detect_flashed_ramimage,
 681     detect_flashed_romimage,
 682 #endif
 683     led,
 684 #if (CONFIG_CODEC == SWCODEC)
 685     bufopen,
 686     bufalloc,
 687     bufclose,
 688     bufseek,
 689     bufadvance,
 690     bufread,
 691     bufgetdata,
 692     bufgettail,
 693     bufcuttail,
 694
 695     buf_get_offset,
 696     buf_handle_offset,
 697     buf_request_buffer_handle,
 698     buf_set_base_handle,
 699     buf_used,
 700 #endif
 701
 702 #ifdef HAVE_TAGCACHE
 703     tagcache_search,
 704     tagcache_search_set_uniqbuf,
 705     tagcache_search_add_filter,
 706     tagcache_get_next,
 707     tagcache_retrieve,
 708     tagcache_search_finish,
 709     tagcache_get_numeric,
 710 #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE)
 711     tagcache_fill_tags,
 712 #endif
 713 #endif
 714
 715 #ifdef HAVE_ALBUMART
 716     search_albumart_files,
 717 #endif
 718
 719 #ifdef HAVE_SEMAPHORE_OBJECTS
 720     semaphore_init,
 721     semaphore_wait,
 722     semaphore_release,
 723 #endif
 724
 725     rbversion,
 726
 727     /* new stuff at the end, sort into place next time
 728        the API gets incompatible */
 729 };
 730
 731 int plugin_load(const char* plugin, const void* parameter)
 732 {
 733     int rc, i;
 734     struct plugin_header *p_hdr;
 735     struct lc_header     *hdr;
 736
 737 #if LCD_DEPTH > 1
 738     fb_data* old_backdrop;
 739 #endif
 740
 741     if (current_plugin_handle && pfn_tsr_exit)
 742     {    /* if we have a resident old plugin and a callback */
 743         if (pfn_tsr_exit(!strcmp(current_plugin, plugin)) == false )
 744         {
 745             /* not allowing another plugin to load */
 746             return PLUGIN_OK;
 747         }
 748         lc_close(current_plugin_handle);
 749         current_plugin_handle = pfn_tsr_exit = NULL;
 750     }
 751
 752     splash(0, ID2P(LANG_WAIT));
 753     strcpy(current_plugin, plugin);
 754
 755     current_plugin_handle = lc_open(plugin, pluginbuf, PLUGIN_BUFFER_SIZE);
 756     if (current_plugin_handle == NULL) {
 757         splashf(HZ*2, str(LANG_PLUGIN_CANT_OPEN), plugin);
 758         return -1;
 759     }
 760
 761     p_hdr = lc_get_header(current_plugin_handle);
 762
 763     hdr = p_hdr ? &p_hdr->lc_hdr : NULL;
 764
 765
 766     if (hdr == NULL
 767         || hdr->magic != PLUGIN_MAGIC
 768         || hdr->target_id != TARGET_ID
 769 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 770         || hdr->load_addr != pluginbuf
 771         || hdr->end_addr > pluginbuf + PLUGIN_BUFFER_SIZE
 772 #endif
 773         )
 774     {
 775         lc_close(current_plugin_handle);
 776         splash(HZ*2, str(LANG_PLUGIN_WRONG_MODEL));
 777         return -1;
 778     }
 779     if (hdr->api_version > PLUGIN_API_VERSION
 780         || hdr->api_version < PLUGIN_MIN_API_VERSION)
 781     {
 782         lc_close(current_plugin_handle);
 783         splash(HZ*2, str(LANG_PLUGIN_WRONG_VERSION));
 784         return -1;
 785     }
 786 #if (CONFIG_PLATFORM & PLATFORM_NATIVE)
 787     plugin_size = hdr->end_addr - pluginbuf;
 788 #else
 789     plugin_size = 0;
 790 #endif
 791
 792     *(p_hdr->api) = &rockbox_api;
 793
 794 #if defined HAVE_LCD_BITMAP && LCD_DEPTH > 1
 795     old_backdrop = lcd_get_backdrop();
 796 #endif
 797     lcd_clear_display();
 798     lcd_update();
 799
 800 #ifdef HAVE_REMOTE_LCD
 801     lcd_remote_clear_display();
 802     lcd_remote_update();
 803 #endif
 804
 805     FOR_NB_SCREENS(i)
 806        viewportmanager_theme_enable(i, false, NULL);
 807
 808 #ifdef HAVE_TOUCHSCREEN
 809     touchscreen_set_mode(TOUCHSCREEN_BUTTON);
 810 #endif
 811
 812 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 813     open_files = 0;
 814 #endif
 815
 816     rc = p_hdr->entry_point(parameter);
 817
 818     if (!pfn_tsr_exit)
 819     {   /* close handle if plugin is no tsr one */
 820         lc_close(current_plugin_handle);
 821         current_plugin_handle = NULL;
 822     }
 823
 824     /* Go back to the global setting in case the plugin changed it */
 825 #ifdef HAVE_TOUCHSCREEN
 826     touchscreen_set_mode(global_settings.touch_mode);
 827 #endif
 828
 829 #ifdef HAVE_LCD_BITMAP
 830     lcd_setfont(FONT_UI);
 831 #if LCD_DEPTH > 1
 832     lcd_set_backdrop(old_backdrop);
 833 #ifdef HAVE_LCD_COLOR
 834     lcd_set_drawinfo(DRMODE_SOLID, global_settings.fg_color,
 835                                    global_settings.bg_color);
 836 #else
 837     lcd_set_drawinfo(DRMODE_SOLID, LCD_DEFAULT_FG, LCD_DEFAULT_BG);
 838 #endif
 839 #else /* LCD_DEPTH == 1 */
 840     lcd_set_drawmode(DRMODE_SOLID);
 841 #endif /* LCD_DEPTH */
 842 #endif /* HAVE_LCD_BITMAP */
 843
 844
 845 #ifdef HAVE_REMOTE_LCD
 846 #if LCD_REMOTE_DEPTH > 1
 847     lcd_remote_set_drawinfo(DRMODE_SOLID, LCD_REMOTE_DEFAULT_FG,
 848                             LCD_REMOTE_DEFAULT_BG);
 849 #else
 850     lcd_remote_set_drawmode(DRMODE_SOLID);
 851 #endif
 852 #endif
 853
 854     lcd_clear_display();
 855 #ifdef HAVE_REMOTE_LCD
 856     lcd_remote_clear_display();
 857 #endif
 858
 859     FOR_NB_SCREENS(i)
 860         viewportmanager_theme_undo(i, false);
 861
 862 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 863     if(open_files != 0 && !current_plugin_handle)
 864     {
 865         int fd;
 866         logf("Plugin '%s' leaks file handles", plugin);
 867
 868         static const char *lines[] =
 869             { ID2P(LANG_PLUGIN_ERROR),
 870               "#leak-file-handles" };
 871         static const struct text_message message={ lines, 2 };
 872         button_clear_queue(); /* Empty the keyboard buffer */
 873         gui_syncyesno_run(&message, NULL, NULL);
 874
 875         for(fd=0; fd < MAX_OPEN_FILES; fd++)
 876             if(open_files & (1<<fd))
 877                 close_wrapper(fd);
 878     }
 879 #endif
 880
 881     if (rc == PLUGIN_ERROR)
 882         splash(HZ*2, str(LANG_PLUGIN_ERROR));
 883
 884     return rc;
 885 }
 886
 887 /* Returns a pointer to the portion of the plugin buffer that is not already
 888    being used.  If no plugin is loaded, returns the entire plugin buffer */
 889 void* plugin_get_buffer(size_t *buffer_size)
 890 {
 891     int buffer_pos;
 892
 893     if (current_plugin_handle)
 894     {
 895         if (plugin_size >= PLUGIN_BUFFER_SIZE)
 896             return NULL;
 897
 898         *buffer_size = PLUGIN_BUFFER_SIZE-plugin_size;
 899         buffer_pos = plugin_size;
 900     }
 901     else
 902     {
 903         *buffer_size = PLUGIN_BUFFER_SIZE;
 904         buffer_pos = 0;
 905     }
 906
 907     return &pluginbuf[buffer_pos];
 908 }
 909
 910 /* Returns a pointer to the mp3 buffer.
 911    Playback gets stopped, to avoid conflicts.
 912    Talk buffer is stolen as well.
 913  */
 914 void* plugin_get_audio_buffer(size_t *buffer_size)
 915 {
 916 #if CONFIG_CODEC == SWCODEC
 917     return audio_get_buffer(true, buffer_size);
 918 #else
 919     audio_stop();
 920     talk_buffer_steal(); /* we use the mp3 buffer, need to tell */
 921     *buffer_size = audiobufend - audiobuf;
 922     return audiobuf;
 923 #endif
 924 }
 925
 926 /* The plugin wants to stay resident after leaving its main function, e.g.
 927    runs from timer or own thread. The callback is registered to later
 928    instruct it to free its resources before a new plugin gets loaded. */
 929 void plugin_tsr(bool (*exit_callback)(bool))
 930 {
 931     pfn_tsr_exit = exit_callback; /* remember the callback for later */
 932 }
 933
 934 char *plugin_get_current_filename(void)
 935 {
 936     return current_plugin;
 937 }
 938
 939 static int open_wrapper(const char* pathname, int flags, ...)
 940 {
 941 /* we don't have an 'open' function. it's a define. and we need
 942  * the real file_open, hence PREFIX() doesn't work here */
 943     int fd;
 944 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
 945     if (flags & O_CREAT)
 946     {
 947         va_list ap;
 948         va_start(ap, flags);
 949         fd = open(pathname, flags, va_arg(ap, unsigned int));
 950         va_end(ap);
 951     }
 952     else
 953         fd = open(pathname, flags);
 954 #else
 955     fd = file_open(pathname,flags);
 956 #endif
 957
 958 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 959     if(fd >= 0)
 960         open_files |= 1<<fd;
 961 #endif
 962     return fd;
 963 }
 964
 965 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 966 static int close_wrapper(int fd)
 967 {
 968     if((~open_files) & (1<<fd))
 969     {
 970         logf("double close from plugin");
 971     }
 972     if(fd >= 0)
 973         open_files &= (~(1<<fd));
 974
 975     return PREFIX(close)(fd);
 976 }
 977
 978 static int creat_wrapper(const char *pathname, mode_t mode)
 979 {
 980     int fd = PREFIX(creat)(pathname, mode);
 981
 982     if(fd >= 0)
 983         open_files |= (1<<fd);
 984
 985     return fd;
 986 }
 987 #endif /* HAVE_PLUGIN_CHECK_OPEN_CLOSE */