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 <sprintf.h>
  25 #include <stdlib.h>
  26 #include "debug.h"
  27 #include "i2c.h"
  28 #include "lang.h"
  29 #include "led.h"
  30 #include "keyboard.h"
  31 #include "buffer.h"
  32 #include "backlight.h"
  33 #include "sound_menu.h"
  34 #include "mp3data.h"
  35 #include "powermgmt.h"
  36 #include "splash.h"
  37 #include "logf.h"
  38 #include "option_select.h"
  39 #include "talk.h"
  40 #include "version.h"
  41 #include "storage.h"
  42 #include "pcmbuf.h"
  43 #include "errno.h"
  44
  45 #if CONFIG_CHARGING
  46 #include "power.h"
  47 #endif
  48
  49 #ifdef HAVE_LCD_BITMAP
  50 #include "scrollbar.h"
  51 #include "peakmeter.h"
  52 #include "bmp.h"
  53 #include "bidi.h"
  54 #endif
  55
  56 #ifdef USB_ENABLE_HID
  57 #include "usbstack/usb_hid.h"
  58 #endif
  59
  60 #ifdef SIMULATOR
  61 #define PREFIX(_x_) sim_ ## _x_
  62 #else
  63 #define PREFIX
  64 #endif
  65
  66 #if defined(HAVE_PLUGIN_CHECK_OPEN_CLOSE) && (MAX_OPEN_FILES>32)
  67 #warning "MAX_OPEN_FILES>32, disabling plugin file open/close checking"
  68 #undef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  69 #endif
  70
  71 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  72 static unsigned int open_files;
  73 #endif
  74
  75 #ifdef SIMULATOR
  76 static unsigned char pluginbuf[PLUGIN_BUFFER_SIZE];
  77 void *sim_plugin_load(char *plugin, void **pd);
  78 void sim_plugin_close(void *pd);
  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 #define sim_plugin_close(x)
  83 extern unsigned char pluginbuf[];
  84 #include "bitswap.h"
  85 #endif
  86
  87 /* for actual plugins only, not for codecs */
  88 static bool plugin_loaded = false;
  89 static int  plugin_size = 0;
  90 static bool (*pfn_tsr_exit)(bool reenter) = NULL; /* TSR exit callback */
  91 static char current_plugin[MAX_PATH];
  92
  93 char *plugin_get_current_filename(void);
  94
  95 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  96 /* Some wrappers used to monitor open and close and detect leaks*/
  97 static int open_wrapper(const char* pathname, int flags);
  98 static int close_wrapper(int fd);
  99 static int creat_wrapper(const char *pathname);
 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_puts,
 113     lcd_puts_scroll,
 114     lcd_stop_scroll,
 115 #ifdef HAVE_LCD_CHARCELLS
 116     lcd_define_pattern,
 117     lcd_get_locked_pattern,
 118     lcd_unlock_pattern,
 119     lcd_putc,
 120     lcd_put_cursor,
 121     lcd_remove_cursor,
 122     lcd_icon,
 123     lcd_double_height,
 124 #else
 125     &lcd_framebuffer[0][0],
 126     lcd_update_rect,
 127     lcd_set_drawmode,
 128     lcd_get_drawmode,
 129     lcd_setfont,
 130     lcd_drawpixel,
 131     lcd_drawline,
 132     lcd_hline,
 133     lcd_vline,
 134     lcd_drawrect,
 135     lcd_fillrect,
 136     lcd_mono_bitmap_part,
 137     lcd_mono_bitmap,
 138 #if LCD_DEPTH > 1
 139     lcd_set_foreground,
 140     lcd_get_foreground,
 141     lcd_set_background,
 142     lcd_get_background,
 143     lcd_bitmap_part,
 144     lcd_bitmap,
 145     lcd_get_backdrop,
 146     lcd_set_backdrop,
 147 #endif
 148 #if LCD_DEPTH == 16
 149     lcd_bitmap_transparent_part,
 150     lcd_bitmap_transparent,
 151 #if MEMORYSIZE > 2
 152     lcd_blit_yuv,
 153 #if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
 154     || defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
 155     || defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
 156     || defined(TOSHIBA_GIGABEAT_S)
 157     lcd_yuv_set_options,
 158 #endif
 159 #endif /* MEMORYSIZE > 2 */
 160 #elif (LCD_DEPTH < 4) && !defined(SIMULATOR)
 161     lcd_blit_mono,
 162     lcd_blit_grey_phase,
 163 #endif /* LCD_DEPTH */
 164 #if defined(HAVE_LCD_MODES) && (HAVE_LCD_MODES & LCD_MODE_PAL256)
 165     lcd_blit_pal256,
 166     lcd_pal256_update_pal,
 167 #endif
 168     lcd_puts_style,
 169     lcd_puts_scroll_style,
 170 #ifdef HAVE_LCD_INVERT
 171     lcd_set_invert_display,
 172 #endif /* HAVE_LCD_INVERT */
 173 #if defined(HAVE_LCD_MODES)
 174     lcd_set_mode,
 175 #endif
 176 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 177     &button_queue,
 178 #endif
 179     bidi_l2v,
 180     font_get_bits,
 181     font_load,
 182     font_get,
 183     font_getstringsize,
 184     font_get_width,
 185     screen_clear_area,
 186     gui_scrollbar_draw,
 187 #endif /* HAVE_LCD_BITMAP */
 188     get_codepage_name,
 189
 190     backlight_on,
 191     backlight_off,
 192     backlight_set_timeout,
 193 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
 194     backlight_set_brightness,
 195 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
 196
 197 #if CONFIG_CHARGING
 198     backlight_set_timeout_plugged,
 199 #endif
 200     is_backlight_on,
 201     splash,
 202     splashf,
 203
 204 #ifdef HAVE_REMOTE_LCD
 205     /* remote lcd */
 206     lcd_remote_set_contrast,
 207     lcd_remote_clear_display,
 208     lcd_remote_puts,
 209     lcd_remote_puts_scroll,
 210     lcd_remote_stop_scroll,
 211     lcd_remote_set_drawmode,
 212     lcd_remote_get_drawmode,
 213     lcd_remote_setfont,
 214     lcd_remote_getstringsize,
 215     lcd_remote_drawpixel,
 216     lcd_remote_drawline,
 217     lcd_remote_hline,
 218     lcd_remote_vline,
 219     lcd_remote_drawrect,
 220     lcd_remote_fillrect,
 221     lcd_remote_mono_bitmap_part,
 222     lcd_remote_mono_bitmap,
 223     lcd_remote_putsxy,
 224     lcd_remote_puts_style,
 225     lcd_remote_puts_scroll_style,
 226     &lcd_remote_framebuffer[0][0],
 227     lcd_remote_update,
 228     lcd_remote_update_rect,
 229
 230     remote_backlight_on,
 231     remote_backlight_off,
 232     remote_backlight_set_timeout,
 233 #if CONFIG_CHARGING
 234     remote_backlight_set_timeout_plugged,
 235 #endif
 236 #endif /* HAVE_REMOTE_LCD */
 237 #if NB_SCREENS == 2
 238     {&screens[SCREEN_MAIN], &screens[SCREEN_REMOTE]},
 239 #else
 240     {&screens[SCREEN_MAIN]},
 241 #endif
 242 #if defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
 243     lcd_remote_set_foreground,
 244     lcd_remote_get_foreground,
 245     lcd_remote_set_background,
 246     lcd_remote_get_background,
 247     lcd_remote_bitmap_part,
 248     lcd_remote_bitmap,
 249 #endif
 250     viewport_set_defaults,
 251 #ifdef HAVE_LCD_BITMAP
 252     viewportmanager_theme_enable,
 253     viewportmanager_theme_undo,
 254 #endif
 255
 256     /* list */
 257     gui_synclist_init,
 258     gui_synclist_set_nb_items,
 259     gui_synclist_set_icon_callback,
 260     gui_synclist_get_nb_items,
 261     gui_synclist_get_sel_pos,
 262     gui_synclist_draw,
 263     gui_synclist_select_item,
 264     gui_synclist_add_item,
 265     gui_synclist_del_item,
 266     gui_synclist_limit_scroll,
 267     gui_synclist_do_button,
 268     gui_synclist_set_title,
 269     gui_syncyesno_run,
 270     simplelist_info_init,
 271     simplelist_show_list,
 272
 273     /* button */
 274     button_get,
 275     button_get_w_tmo,
 276     button_status,
 277 #ifdef HAVE_BUTTON_DATA
 278     button_get_data,
 279     button_status_wdata,
 280 #endif
 281     button_clear_queue,
 282     button_queue_count,
 283 #ifdef HAS_BUTTON_HOLD
 284     button_hold,
 285 #endif
 286 #ifdef HAVE_TOUCHSCREEN
 287     touchscreen_set_mode,
 288 #endif
 289
 290 #ifdef HAVE_BUTTON_LIGHT
 291     buttonlight_set_timeout,
 292     buttonlight_off,
 293     buttonlight_on,
 294 #ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
 295     buttonlight_set_brightness,
 296 #endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
 297 #endif /* HAVE_BUTTON_LIGHT */
 298
 299     /* file */
 300     open_utf8,
 301 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 302     (open_func)open_wrapper,
 303     close_wrapper,
 304 #else
 305     (open_func)PREFIX(open),
 306     PREFIX(close),
 307     #endif
 308     (read_func)PREFIX(read),
 309     PREFIX(lseek),
 310 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 311     (creat_func)creat_wrapper,
 312 #else
 313     (creat_func)PREFIX(creat),
 314 #endif
 315     (write_func)PREFIX(write),
 316     PREFIX(remove),
 317     PREFIX(rename),
 318     PREFIX(ftruncate),
 319     PREFIX(filesize),
 320     fdprintf,
 321     read_line,
 322     settings_parseline,
 323     storage_sleep,
 324     storage_spin,
 325     storage_spindown,
 326 #if USING_STORAGE_CALLBACK
 327     register_storage_idle_func,
 328     unregister_storage_idle_func,
 329 #endif /* USING_STORAGE_CALLBACK */
 330     reload_directory,
 331     create_numbered_filename,
 332     file_exists,
 333     strip_extension,
 334     crc_32,
 335
 336     /* dir */
 337     opendir,
 338     closedir,
 339     readdir,
 340     mkdir,
 341     rmdir,
 342     dir_exists,
 343
 344     /* kernel/ system */
 345 #ifdef CPU_ARM
 346     __div0,
 347 #endif
 348     PREFIX(sleep),
 349     yield,
 350     &current_tick,
 351     default_event_handler,
 352     default_event_handler_ex,
 353     create_thread,
 354     thread_exit,
 355     thread_wait,
 356 #if (CONFIG_CODEC == SWCODEC)
 357     thread_thaw,
 358 #ifdef HAVE_PRIORITY_SCHEDULING
 359     thread_set_priority,
 360 #endif
 361     mutex_init,
 362     mutex_lock,
 363     mutex_unlock,
 364 #endif
 365
 366     reset_poweroff_timer,
 367 #ifndef SIMULATOR
 368     system_memory_guard,
 369     &cpu_frequency,
 370
 371 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 372 #ifdef CPU_BOOST_LOGGING
 373     cpu_boost_,
 374 #else
 375     cpu_boost,
 376 #endif
 377 #endif /* HAVE_ADJUSTABLE_CPU_FREQ */
 378 #endif /* !SIMULATOR */
 379 #ifdef HAVE_SCHEDULER_BOOSTCTRL
 380     trigger_cpu_boost,
 381     cancel_cpu_boost,
 382 #endif
 383 #if NUM_CORES > 1
 384     cpucache_flush,
 385     cpucache_invalidate,
 386 #endif
 387     timer_register,
 388     timer_unregister,
 389     timer_set_period,
 390
 391     queue_init,
 392     queue_delete,
 393     queue_post,
 394     queue_wait_w_tmo,
 395 #if CONFIG_CODEC == SWCODEC
 396     queue_enable_queue_send,
 397     queue_empty,
 398     queue_wait,
 399     queue_send,
 400     queue_reply,
 401 #endif
 402     usb_acknowledge,
 403 #ifdef USB_ENABLE_HID
 404     usb_hid_send,
 405 #endif
 406 #ifdef RB_PROFILE
 407     profile_thread,
 408     profstop,
 409     __cyg_profile_func_enter,
 410     __cyg_profile_func_exit,
 411 #endif
 412     add_event,
 413     remove_event,
 414     send_event,
 415
 416 #ifdef SIMULATOR
 417     /* special simulator hooks */
 418 #if defined(HAVE_LCD_BITMAP) && LCD_DEPTH < 8
 419     sim_lcd_ex_init,
 420     sim_lcd_ex_update_rect,
 421 #endif
 422 #endif
 423
 424     /* strings and memory */
 425     snprintf,
 426     vsnprintf,
 427     strcpy,
 428     strlcpy,
 429     strlen,
 430     strrchr,
 431     strcmp,
 432     strncmp,
 433     strcasecmp,
 434     strncasecmp,
 435     memset,
 436     memcpy,
 437     memmove,
 438     _ctype_,
 439     atoi,
 440     strchr,
 441     strcat,
 442     strlcat,
 443     memchr,
 444     memcmp,
 445     strcasestr,
 446     strtok_r,
 447     /* unicode stuff */
 448     utf8decode,
 449     iso_decode,
 450     utf16LEdecode,
 451     utf16BEdecode,
 452     utf8encode,
 453     utf8length,
 454     utf8seek,
 455
 456     /* sound */
 457     sound_set,
 458     sound_default,
 459     sound_min,
 460     sound_max,
 461     sound_unit,
 462     sound_val2phys,
 463 #ifndef SIMULATOR
 464     mp3_play_data,
 465     mp3_play_pause,
 466     mp3_play_stop,
 467     mp3_is_playing,
 468 #if CONFIG_CODEC != SWCODEC
 469     bitswap,
 470 #endif
 471 #endif
 472 #if CONFIG_CODEC == SWCODEC
 473     &audio_master_sampr_list[0],
 474     &hw_freq_sampr[0],
 475     pcm_apply_settings,
 476     pcm_play_data,
 477     pcm_play_stop,
 478     pcm_set_frequency,
 479     pcm_is_playing,
 480     pcm_is_paused,
 481     pcm_play_pause,
 482     pcm_get_bytes_waiting,
 483     pcm_calculate_peaks,
 484     pcm_get_peak_buffer,
 485     pcm_play_lock,
 486     pcm_play_unlock,
 487     pcmbuf_beep,
 488 #ifdef HAVE_RECORDING
 489     &rec_freq_sampr[0],
 490     pcm_init_recording,
 491     pcm_close_recording,
 492     pcm_record_data,
 493     pcm_record_more,
 494     pcm_stop_recording,
 495     pcm_calculate_rec_peaks,
 496     audio_set_recording_gain,
 497 #endif /* HAVE_RECORDING */
 498 #if INPUT_SRC_CAPS != 0
 499     audio_set_output_source,
 500     audio_set_input_source,
 501 #endif
 502     dsp_set_crossfeed,
 503     dsp_set_eq,
 504     dsp_dither_enable,
 505     dsp_configure,
 506     dsp_process,
 507     dsp_input_count,
 508     dsp_output_count,
 509 #endif /* CONFIG_CODEC == SWCODEC */
 510
 511     /* playback control */
 512     playlist_amount,
 513     playlist_resume,
 514     playlist_start,
 515     playlist_add,
 516     playlist_sync,
 517     playlist_remove_all_tracks,
 518     playlist_create,
 519     playlist_insert_track,
 520     playlist_insert_directory,
 521     playlist_shuffle,
 522     PREFIX(audio_play),
 523     audio_stop,
 524     audio_pause,
 525     audio_resume,
 526     audio_next,
 527     audio_prev,
 528     audio_ff_rewind,
 529     audio_next_track,
 530     audio_status,
 531     audio_current_track,
 532     audio_flush_and_reload_tracks,
 533     audio_get_file_pos,
 534 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 535     mpeg_get_last_header,
 536 #endif
 537 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) || \
 538     (CONFIG_CODEC == SWCODEC)
 539     sound_set_pitch,
 540 #endif
 541
 542 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 543     /* MAS communication */
 544     mas_readmem,
 545     mas_writemem,
 546     mas_readreg,
 547     mas_writereg,
 548 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 549     mas_codec_writereg,
 550     mas_codec_readreg,
 551     i2c_begin,
 552     i2c_end,
 553     i2c_write,
 554 #endif
 555 #endif /* !SIMULATOR && CONFIG_CODEC != SWCODEC */
 556
 557     /* menu */
 558     do_menu,
 559     /* statusbars */
 560     &statusbars,
 561     gui_syncstatusbar_draw,
 562     /* options */
 563     get_settings_list,
 564     find_setting,
 565     option_screen,
 566     set_option,
 567     set_bool_options,
 568     set_int,
 569     set_bool,
 570 #ifdef HAVE_LCD_COLOR
 571     set_color,
 572 #endif
 573
 574     /* action handling */
 575     get_custom_action,
 576     get_action,
 577 #ifdef HAVE_TOUCHSCREEN
 578     action_get_touchscreen_press,
 579 #endif
 580     action_userabort,
 581
 582     /* power */
 583     battery_level,
 584     battery_level_safe,
 585     battery_time,
 586 #ifndef SIMULATOR
 587     battery_voltage,
 588 #endif
 589 #if CONFIG_CHARGING
 590     charger_inserted,
 591 # if CONFIG_CHARGING >= CHARGING_MONITOR
 592     charging_state,
 593 # endif
 594 #endif
 595 #ifdef HAVE_USB_POWER
 596     usb_powered,
 597 #endif
 598
 599     /* misc */
 600 #if !defined(SIMULATOR) || defined(__MINGW32__) || defined(__CYGWIN__)
 601     &errno,
 602 #endif
 603     srand,
 604     rand,
 605     (qsort_func)qsort,
 606     kbd_input,
 607     get_time,
 608     set_time,
 609 #if CONFIG_RTC
 610     mktime,
 611 #endif
 612     plugin_get_buffer,
 613     plugin_get_audio_buffer,
 614     plugin_tsr,
 615     plugin_get_current_filename,
 616 #ifdef PLUGIN_USE_IRAM
 617     plugin_iram_init,
 618 #endif
 619 #if defined(DEBUG) || defined(SIMULATOR)
 620     debugf,
 621 #endif
 622 #ifdef ROCKBOX_HAS_LOGF
 623     _logf,
 624 #endif
 625     &global_settings,
 626     &global_status,
 627     talk_disable,
 628 #if CONFIG_CODEC == SWCODEC
 629     codec_thread_do_callback,
 630     codec_load_file,
 631     get_codec_filename,
 632 #endif
 633     get_metadata,
 634     mp3info,
 635     count_mp3_frames,
 636     create_xing_header,
 637     find_next_frame,
 638 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 639     peak_meter_scale_value,
 640     peak_meter_set_use_dbfs,
 641     peak_meter_get_use_dbfs,
 642 #endif
 643 #ifdef HAVE_LCD_BITMAP
 644     read_bmp_file,
 645     read_bmp_fd,
 646 #ifdef HAVE_JPEG
 647     read_jpeg_file,
 648     read_jpeg_fd,
 649 #endif
 650     screen_dump_set_hook,
 651 #endif
 652     show_logo,
 653     tree_get_context,
 654     set_current_file,
 655     set_dirfilter,
 656
 657 #ifdef HAVE_WHEEL_POSITION
 658     wheel_status,
 659     wheel_send_events,
 660 #endif
 661
 662 #ifdef IRIVER_H100_SERIES
 663     /* Routines for the iriver_flash -plugin. */
 664     detect_original_firmware,
 665     detect_flashed_ramimage,
 666     detect_flashed_romimage,
 667 #endif
 668     led,
 669 #if (CONFIG_CODEC == SWCODEC)
 670     bufopen,
 671     bufalloc,
 672     bufclose,
 673     bufseek,
 674     bufadvance,
 675     bufread,
 676     bufgetdata,
 677     bufgettail,
 678     bufcuttail,
 679
 680     buf_get_offset,
 681     buf_handle_offset,
 682     buf_request_buffer_handle,
 683     buf_set_base_handle,
 684     buf_used,
 685 #endif
 686
 687 #ifdef HAVE_TAGCACHE
 688     tagcache_search,
 689     tagcache_search_set_uniqbuf,
 690     tagcache_search_add_filter,
 691     tagcache_get_next,
 692     tagcache_retrieve,
 693     tagcache_search_finish,
 694     tagcache_get_numeric,
 695 #ifdef HAVE_TC_RAMCACHE
 696     tagcache_fill_tags,
 697 #endif
 698 #endif
 699
 700 #ifdef HAVE_ALBUMART
 701     search_albumart_files,
 702 #endif
 703
 704 #ifdef HAVE_SEMAPHORE_OBJECTS
 705     semaphore_init,
 706     semaphore_wait,
 707     semaphore_release,
 708 #endif
 709
 710     appsversion,
 711     /* new stuff at the end, sort into place next time
 712        the API gets incompatible */
 713 };
 714
 715 int plugin_load(const char* plugin, const void* parameter)
 716 {
 717     int rc, i;
 718     struct plugin_header *hdr;
 719 #ifdef SIMULATOR
 720     void *pd;
 721 #else /* !SIMULATOR */
 722     int fd;
 723     ssize_t readsize;
 724 #if NUM_CORES > 1
 725     unsigned my_core;
 726 #endif
 727 #endif /* !SIMULATOR */
 728
 729 #if LCD_DEPTH > 1
 730     fb_data* old_backdrop;
 731 #endif
 732
 733     if (pfn_tsr_exit != NULL) /* if we have a resident old plugin: */
 734     {
 735         if (pfn_tsr_exit(!strcmp(current_plugin, plugin)) == false )
 736         {
 737             /* not allowing another plugin to load */
 738             return PLUGIN_OK;
 739         }
 740         pfn_tsr_exit = NULL;
 741         plugin_loaded = false;
 742     }
 743
 744     splash(0, ID2P(LANG_WAIT));
 745     strcpy(current_plugin, plugin);
 746
 747 #ifdef SIMULATOR
 748     hdr = sim_plugin_load((char *)plugin, &pd);
 749     if (pd == NULL) {
 750         splashf(HZ*2, str(LANG_PLUGIN_CANT_OPEN), plugin);
 751         return -1;
 752     }
 753     if (hdr == NULL
 754         || hdr->magic != PLUGIN_MAGIC
 755         || hdr->target_id != TARGET_ID) {
 756         sim_plugin_close(pd);
 757         splash(HZ*2, str(LANG_PLUGIN_WRONG_MODEL));
 758         return -1;
 759     }
 760     if (hdr->api_version > PLUGIN_API_VERSION
 761         || hdr->api_version < PLUGIN_MIN_API_VERSION) {
 762         sim_plugin_close(pd);
 763         splash(HZ*2, str(LANG_PLUGIN_WRONG_VERSION));
 764         return -1;
 765     }
 766 #else
 767     fd = open(plugin, O_RDONLY);
 768     if (fd < 0) {
 769         splashf(HZ*2, str(LANG_PLUGIN_CANT_OPEN), plugin);
 770         return fd;
 771     }
 772 #if NUM_CORES > 1
 773     /* Make sure COP cache is flushed and invalidated before loading */
 774     my_core = switch_core(CURRENT_CORE ^ 1);
 775     cpucache_invalidate();
 776     switch_core(my_core);
 777 #endif
 778
 779     readsize = read(fd, pluginbuf, PLUGIN_BUFFER_SIZE);
 780     close(fd);
 781
 782     if (readsize < 0) {
 783         splashf(HZ*2, str(LANG_READ_FAILED), plugin);
 784         return -1;
 785     }
 786     hdr = (struct plugin_header *)pluginbuf;
 787
 788     if ((unsigned)readsize <= sizeof(struct plugin_header)
 789         || hdr->magic != PLUGIN_MAGIC
 790         || hdr->target_id != TARGET_ID
 791         || hdr->load_addr != pluginbuf
 792         || hdr->end_addr > pluginbuf + PLUGIN_BUFFER_SIZE) {
 793         splash(HZ*2, str(LANG_PLUGIN_WRONG_MODEL));
 794         return -1;
 795     }
 796     if (hdr->api_version > PLUGIN_API_VERSION
 797         || hdr->api_version < PLUGIN_MIN_API_VERSION) {
 798         splash(HZ*2, str(LANG_PLUGIN_WRONG_VERSION));
 799         return -1;
 800     }
 801     plugin_size = hdr->end_addr - pluginbuf;
 802
 803     /* zero out bss area only, above guards end of pluginbuf */
 804     if (plugin_size > readsize)
 805         memset(pluginbuf + readsize, 0, plugin_size - readsize);
 806 #endif
 807
 808     *(hdr->api) = &rockbox_api;
 809     plugin_loaded = true;
 810
 811
 812 #if defined HAVE_LCD_BITMAP && LCD_DEPTH > 1
 813     old_backdrop = lcd_get_backdrop();
 814 #endif
 815     lcd_clear_display();
 816     lcd_update();
 817
 818 #ifdef HAVE_REMOTE_LCD
 819     lcd_remote_clear_display();
 820     lcd_remote_update();
 821 #endif
 822
 823     FOR_NB_SCREENS(i)
 824        viewportmanager_theme_enable(i, false, NULL);
 825
 826     cpucache_invalidate();
 827
 828 #ifdef HAVE_TOUCHSCREEN
 829     touchscreen_set_mode(TOUCHSCREEN_BUTTON);
 830 #endif
 831
 832 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 833     open_files = 0;
 834 #endif
 835
 836     rc = hdr->entry_point(parameter);
 837
 838     /* Go back to the global setting in case the plugin changed it */
 839 #ifdef HAVE_TOUCHSCREEN
 840     touchscreen_set_mode(global_settings.touch_mode);
 841 #endif
 842
 843     button_clear_queue();
 844
 845 #ifdef HAVE_LCD_BITMAP
 846     lcd_setfont(FONT_UI);
 847 #if LCD_DEPTH > 1
 848     lcd_set_backdrop(old_backdrop);
 849 #ifdef HAVE_LCD_COLOR
 850     lcd_set_drawinfo(DRMODE_SOLID, global_settings.fg_color,
 851                                    global_settings.bg_color);
 852 #else
 853     lcd_set_drawinfo(DRMODE_SOLID, LCD_DEFAULT_FG, LCD_DEFAULT_BG);
 854 #endif
 855 #else /* LCD_DEPTH == 1 */
 856     lcd_set_drawmode(DRMODE_SOLID);
 857 #endif /* LCD_DEPTH */
 858 #endif /* HAVE_LCD_BITMAP */
 859
 860
 861 #ifdef HAVE_REMOTE_LCD
 862 #if LCD_REMOTE_DEPTH > 1
 863     lcd_remote_set_drawinfo(DRMODE_SOLID, LCD_REMOTE_DEFAULT_FG,
 864                             LCD_REMOTE_DEFAULT_BG);
 865 #else
 866     lcd_remote_set_drawmode(DRMODE_SOLID);
 867 #endif
 868 #endif
 869
 870     lcd_clear_display();
 871 #ifdef HAVE_LCD_REMOTE
 872     lcd_remote_clear_display();
 873 #endif
 874
 875     FOR_NB_SCREENS(i)
 876         viewportmanager_theme_undo(i, false);
 877
 878     if (pfn_tsr_exit == NULL)
 879         plugin_loaded = false;
 880
 881 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 882     if(open_files != 0 && !plugin_loaded)
 883     {
 884         int fd;
 885         logf("Plugin '%s' leaks file handles", plugin);
 886
 887         static const char *lines[] =
 888             { ID2P(LANG_PLUGIN_ERROR),
 889               "#leak-file-handles" };
 890         static const struct text_message message={ lines, 2 };
 891         button_clear_queue(); /* Empty the keyboard buffer */
 892         gui_syncyesno_run(&message, NULL, NULL);
 893
 894         for(fd=0; fd < MAX_OPEN_FILES; fd++)
 895             if(open_files & (1<<fd))
 896                 close_wrapper(fd);
 897     }
 898 #endif
 899
 900     sim_plugin_close(pd);
 901
 902     if (rc == PLUGIN_ERROR)
 903         splash(HZ*2, str(LANG_PLUGIN_ERROR));
 904
 905     return rc;
 906 }
 907
 908 /* Returns a pointer to the portion of the plugin buffer that is not already
 909    being used.  If no plugin is loaded, returns the entire plugin buffer */
 910 void* plugin_get_buffer(size_t *buffer_size)
 911 {
 912     int buffer_pos;
 913
 914     if (plugin_loaded)
 915     {
 916         if (plugin_size >= PLUGIN_BUFFER_SIZE)
 917             return NULL;
 918
 919         *buffer_size = PLUGIN_BUFFER_SIZE-plugin_size;
 920         buffer_pos = plugin_size;
 921     }
 922     else
 923     {
 924         *buffer_size = PLUGIN_BUFFER_SIZE;
 925         buffer_pos = 0;
 926     }
 927
 928     return &pluginbuf[buffer_pos];
 929 }
 930
 931 /* Returns a pointer to the mp3 buffer.
 932    Playback gets stopped, to avoid conflicts.
 933    Talk buffer is stolen as well.
 934  */
 935 void* plugin_get_audio_buffer(size_t *buffer_size)
 936 {
 937 #if CONFIG_CODEC == SWCODEC
 938     return audio_get_buffer(true, buffer_size);
 939 #else
 940     audio_stop();
 941     talk_buffer_steal(); /* we use the mp3 buffer, need to tell */
 942     *buffer_size = audiobufend - audiobuf;
 943     return audiobuf;
 944 #endif
 945 }
 946
 947 #ifdef PLUGIN_USE_IRAM
 948 /* Initializes plugin IRAM */
 949 void plugin_iram_init(char *iramstart, char *iramcopy, size_t iram_size,
 950                       char *iedata, size_t iedata_size)
 951 {
 952     /* We need to stop audio playback in order to use codec IRAM */
 953     audio_hard_stop();
 954     memcpy(iramstart, iramcopy, iram_size);
 955     memset(iedata, 0, iedata_size);
 956     memset(iramcopy, 0, iram_size);
 957 #if NUM_CORES > 1
 958     /* writeback cleared iedata and iramcopy areas */
 959     cpucache_flush();
 960 #endif
 961 }
 962 #endif /* PLUGIN_USE_IRAM */
 963
 964 /* The plugin wants to stay resident after leaving its main function, e.g.
 965    runs from timer or own thread. The callback is registered to later
 966    instruct it to free its resources before a new plugin gets loaded. */
 967 void plugin_tsr(bool (*exit_callback)(bool))
 968 {
 969     pfn_tsr_exit = exit_callback; /* remember the callback for later */
 970 }
 971
 972 char *plugin_get_current_filename(void)
 973 {
 974     return current_plugin;
 975 }
 976
 977 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 978 static int open_wrapper(const char* pathname, int flags)
 979 {
 980     int fd = PREFIX(open)(pathname,flags);
 981
 982     if(fd >= 0)
 983         open_files |= 1<<fd;
 984
 985     return fd;
 986 }
 987
 988 static int close_wrapper(int fd)
 989 {
 990     if((~open_files) & (1<<fd))
 991     {
 992         logf("double close from plugin");
 993     }
 994     if(fd >= 0)
 995         open_files &= (~(1<<fd));
 996
 997     return PREFIX(close)(fd);
 998 }
 999
1000 static int creat_wrapper(const char *pathname)
1001 {
1002     int fd = PREFIX(creat)(pathname);
1003
1004     if(fd >= 0)
1005         open_files |= (1<<fd);
1006
1007     return fd;
1008 }
1009 #endif /* HAVE_PLUGIN_CHECK_OPEN_CLOSE */