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