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rockbox/apps/plugin.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Björn Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include <ctype.h>
#include <string.h>
#include <sprintf.h>
#include <atoi.h>
#include "debug.h"
#include "i2c.h"
#include "lang.h"
#include "keyboard.h"
#include "buffer.h"
#include "backlight.h"
#include "sound_menu.h"
#include "mp3data.h"
#include "powermgmt.h"
#include "splash.h"
#include "logf.h"
#ifdef CONFIG_CHARGING
#include "power.h"
#endif
#ifdef HAVE_LCD_BITMAP
#include "scrollbar.h"
#include "peakmeter.h"
#include "bmp.h"
#include "bidi.h"
#endif
#ifdef SIMULATOR
static unsigned char pluginbuf[PLUGIN_BUFFER_SIZE];
void *sim_plugin_load(char *plugin, void **pd);
void sim_plugin_close(void *pd);
void sim_lcd_ex_init(int shades, unsigned long (*getpixel)(int, int));
void sim_lcd_ex_update_rect(int x, int y, int width, int height);
#else
#define sim_plugin_close(x)
extern unsigned char pluginbuf[];
#include "bitswap.h"
#endif
/* for actual plugins only, not for codecs */
static bool plugin_loaded = false;
static int plugin_size = 0;
static bool (*pfn_tsr_exit)(bool reenter) = NULL; /* TSR exit callback */
static char current_plugin[MAX_PATH];
static const struct plugin_api rockbox_api = {
/* lcd */
lcd_set_contrast,
lcd_clear_display,
lcd_puts,
lcd_puts_scroll,
lcd_stop_scroll,
#ifdef HAVE_LCD_CHARCELLS
lcd_define_pattern,
lcd_get_locked_pattern,
lcd_unlock_pattern,
lcd_putc,
lcd_put_cursor,
lcd_remove_cursor,
PREFIX(lcd_icon),
lcd_double_height,
#else
lcd_setmargins,
lcd_set_drawmode,
lcd_get_drawmode,
lcd_setfont,
lcd_getstringsize,
lcd_drawpixel,
lcd_drawline,
lcd_hline,
lcd_vline,
lcd_drawrect,
lcd_fillrect,
lcd_mono_bitmap_part,
lcd_mono_bitmap,
#if LCD_DEPTH > 1
lcd_set_foreground,
lcd_get_foreground,
lcd_set_background,
lcd_get_background,
lcd_bitmap_part,
lcd_bitmap,
lcd_set_backdrop,
#endif
#if LCD_DEPTH == 16
lcd_bitmap_transparent_part,
lcd_bitmap_transparent,
#endif
bidi_l2v,
font_get_bits,
font_load,
lcd_putsxy,
lcd_puts_style,
lcd_puts_scroll_style,
&lcd_framebuffer[0][0],
lcd_blit,
lcd_update,
lcd_update_rect,
gui_scrollbar_draw,
font_get,
font_getstringsize,
font_get_width,
#endif
backlight_on,
backlight_off,
backlight_set_timeout,
gui_syncsplash,
#ifdef HAVE_REMOTE_LCD
/* remote lcd */
lcd_remote_set_contrast,
lcd_remote_clear_display,
lcd_remote_puts,
lcd_remote_puts_scroll,
lcd_remote_stop_scroll,
lcd_remote_set_drawmode,
lcd_remote_get_drawmode,
lcd_remote_setfont,
lcd_remote_getstringsize,
lcd_remote_drawpixel,
lcd_remote_drawline,
lcd_remote_hline,
lcd_remote_vline,
lcd_remote_drawrect,
lcd_remote_fillrect,
lcd_remote_mono_bitmap_part,
lcd_remote_mono_bitmap,
lcd_remote_putsxy,
lcd_remote_puts_style,
lcd_remote_puts_scroll_style,
&lcd_remote_framebuffer[0][0],
lcd_remote_update,
lcd_remote_update_rect,
remote_backlight_on,
remote_backlight_off,
#endif
#if NB_SCREENS == 2
{&screens[SCREEN_MAIN], &screens[SCREEN_REMOTE]},
#else
{&screens[SCREEN_MAIN]},
#endif
#if defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
lcd_remote_set_foreground,
lcd_remote_get_foreground,
lcd_remote_set_background,
lcd_remote_get_background,
lcd_remote_bitmap_part,
lcd_remote_bitmap,
#endif
#if defined(HAVE_LCD_COLOR) && !defined(SIMULATOR)
lcd_yuv_blit,
#endif
/* list */
gui_synclist_init,
gui_synclist_set_nb_items,
gui_synclist_set_icon_callback,
gui_synclist_get_nb_items,
gui_synclist_get_sel_pos,
gui_synclist_draw,
gui_synclist_select_item,
gui_synclist_select_next,
gui_synclist_select_previous,
gui_synclist_select_next_page,
gui_synclist_select_previous_page,
gui_synclist_add_item,
gui_synclist_del_item,
gui_synclist_limit_scroll,
gui_synclist_flash,
#ifdef HAVE_LCD_BITMAP
gui_synclist_scroll_right,
gui_synclist_scroll_left,
#endif
gui_synclist_do_button,
gui_synclist_set_title,
/* button */
button_get,
button_get_w_tmo,
button_status,
button_clear_queue,
#ifdef HAS_BUTTON_HOLD
button_hold,
#endif
/* file */
(open_func)PREFIX(open),
close,
(read_func)read,
PREFIX(lseek),
(creat_func)PREFIX(creat),
(write_func)write,
PREFIX(remove),
PREFIX(rename),
PREFIX(ftruncate),
PREFIX(filesize),
fdprintf,
read_line,
settings_parseline,
#ifndef SIMULATOR
ata_sleep,
ata_disk_is_active,
#endif
ata_spindown,
reload_directory,
/* dir */
PREFIX(opendir),
PREFIX(closedir),
PREFIX(readdir),
PREFIX(mkdir),
PREFIX(rmdir),
/* dir, cached */
#ifdef HAVE_DIRCACHE
opendir_cached,
readdir_cached,
closedir_cached,
#endif
/* kernel/ system */
PREFIX(sleep),
yield,
&current_tick,
default_event_handler,
default_event_handler_ex,
create_thread,
remove_thread,
reset_poweroff_timer,
#ifndef SIMULATOR
system_memory_guard,
&cpu_frequency,
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
cpu_boost,
#endif
timer_register,
timer_unregister,
timer_set_period,
#endif
queue_init,
queue_delete,
queue_post,
queue_wait_w_tmo,
usb_acknowledge,
#ifdef RB_PROFILE
profile_thread,
profstop,
profile_func_enter,
profile_func_exit,
#endif
#ifdef SIMULATOR
/* special simulator hooks */
#if defined(HAVE_LCD_BITMAP) && LCD_DEPTH < 8
sim_lcd_ex_init,
sim_lcd_ex_update_rect,
#endif
#endif
/* strings and memory */
snprintf,
vsnprintf,
strcpy,
strncpy,
strlen,
strrchr,
strcmp,
strncmp,
strcasecmp,
strncasecmp,
memset,
memcpy,
memmove,
_ctype_,
atoi,
strchr,
strcat,
memchr,
memcmp,
strcasestr,
strtok_r,
/* unicode stuff */
utf8decode,
iso_decode,
utf16LEdecode,
utf16BEdecode,
utf8encode,
utf8length,
utf8seek,
/* sound */
sound_set,
set_sound,
sound_min,
sound_max,
#ifndef SIMULATOR
mp3_play_data,
mp3_play_pause,
mp3_play_stop,
mp3_is_playing,
#if CONFIG_CODEC != SWCODEC
bitswap,
#endif
#if CONFIG_CODEC == SWCODEC
pcm_play_data,
pcm_play_stop,
pcm_set_frequency,
pcm_is_playing,
pcm_play_pause,
#endif
#endif
#if CONFIG_CODEC == SWCODEC
pcm_calculate_peaks,
#endif
/* playback control */
PREFIX(audio_play),
audio_stop,
audio_pause,
audio_resume,
audio_next,
audio_prev,
audio_ff_rewind,
audio_next_track,
playlist_amount,
audio_status,
audio_has_changed_track,
audio_current_track,
audio_flush_and_reload_tracks,
audio_get_file_pos,
#if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
mpeg_get_last_header,
#endif
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) || \
(CONFIG_CODEC == SWCODEC)
sound_set_pitch,
#endif
#if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
/* MAS communication */
mas_readmem,
mas_writemem,
mas_readreg,
mas_writereg,
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
mas_codec_writereg,
mas_codec_readreg,
i2c_begin,
i2c_end,
i2c_write,
#endif
#endif /* !SIMULATOR && CONFIG_CODEC != SWCODEC */
/* menu */
menu_init,
menu_exit,
menu_show,
menu_run,
menu_cursor,
menu_description,
menu_delete,
menu_count,
menu_moveup,
menu_movedown,
menu_draw,
menu_insert,
menu_set_cursor,
set_option,
set_int,
set_bool,
/* action handling */
get_custom_action,
get_action,
action_signalscreenchange,
action_userabort,
/* power */
battery_level,
battery_level_safe,
battery_time,
#ifndef SIMULATOR
battery_voltage,
#endif
#ifdef CONFIG_CHARGING
charger_inserted,
# if CONFIG_CHARGING == CHARGING_MONITOR
charging_state,
# endif
#endif
#ifdef HAVE_USB_POWER
usb_powered,
#endif
/* misc */
srand,
rand,
(qsort_func)qsort,
kbd_input,
get_time,
set_time,
plugin_get_buffer,
plugin_get_audio_buffer,
plugin_tsr,
#if defined(DEBUG) || defined(SIMULATOR)
debugf,
#endif
#ifdef ROCKBOX_HAS_LOGF
_logf,
#endif
&global_settings,
mp3info,
count_mp3_frames,
create_xing_header,
find_next_frame,
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
peak_meter_scale_value,
peak_meter_set_use_dbfs,
peak_meter_get_use_dbfs,
#endif
#ifdef HAVE_LCD_BITMAP
read_bmp_file,
screen_dump_set_hook,
#endif
show_logo,
tree_get_context,
#ifdef HAVE_WHEEL_POSITION
wheel_status,
wheel_send_events,
#endif
/* new stuff at the end, sort into place next time
the API gets incompatible */
/* Keep these at the bottom till fully proven */
#if CONFIG_CODEC == SWCODEC
&audio_master_sampr_list[0],
&hw_freq_sampr[0],
#ifndef SIMULATOR
pcm_apply_settings,
#endif
#ifdef HAVE_RECORDING
&rec_freq_sampr[0],
#ifndef SIMULATOR
pcm_init_recording,
pcm_close_recording,
pcm_record_data,
pcm_stop_recording,
pcm_calculate_rec_peaks,
audio_set_recording_gain,
audio_set_output_source,
rec_set_source,
#endif
#endif /* HAVE_RECORDING */
#endif /* CONFIG_CODEC == SWCODEC */
#ifdef IRAM_STEAL
plugin_iram_init,
#endif
#if CONFIG_CODEC == SWCODEC && defined(HAVE_RECORDING) && !defined(SIMULATOR)
sound_default,
#endif
};
int plugin_load(const char* plugin, void* parameter)
{
int rc;
struct plugin_header *hdr;
const char *p = strrchr(plugin,'/');
#ifdef SIMULATOR
void *pd;
#else
int fd;
ssize_t readsize;
#endif
#ifdef HAVE_LCD_BITMAP
int xm, ym;
#endif
#ifdef HAVE_REMOTE_LCD
int rxm, rym;
#endif
#if LCD_DEPTH > 1
fb_data* old_backdrop;
#endif
if (!p)
p = plugin;
action_signalscreenchange();
if (pfn_tsr_exit != NULL) /* if we have a resident old plugin: */
{
if (pfn_tsr_exit(!strcmp(current_plugin,p)) == false )
{
/* not allowing another plugin to load */
return PLUGIN_OK;
}
pfn_tsr_exit = NULL;
plugin_loaded = false;
}
gui_syncsplash(0, true, str(LANG_WAIT));
strcpy(current_plugin,p);
#ifdef SIMULATOR
hdr = sim_plugin_load((char *)plugin, &pd);
if (pd == NULL) {
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_CANT_OPEN), plugin);
return -1;
}
if (hdr == NULL
|| hdr->magic != PLUGIN_MAGIC
|| hdr->target_id != TARGET_ID) {
sim_plugin_close(pd);
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_WRONG_MODEL));
return -1;
}
if (hdr->api_version > PLUGIN_API_VERSION
|| hdr->api_version < PLUGIN_MIN_API_VERSION) {
sim_plugin_close(pd);
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_WRONG_VERSION));
return -1;
}
#else
fd = open(plugin, O_RDONLY);
if (fd < 0) {
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_CANT_OPEN), plugin);
return fd;
}
readsize = read(fd, pluginbuf, PLUGIN_BUFFER_SIZE);
close(fd);
if (readsize < 0) {
gui_syncsplash(HZ*2, true, str(LANG_READ_FAILED), plugin);
return -1;
}
hdr = (struct plugin_header *)pluginbuf;
if ((unsigned)readsize <= sizeof(struct plugin_header)
|| hdr->magic != PLUGIN_MAGIC
|| hdr->target_id != TARGET_ID
|| hdr->load_addr != pluginbuf
|| hdr->end_addr > pluginbuf + PLUGIN_BUFFER_SIZE) {
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_WRONG_MODEL));
return -1;
}
if (hdr->api_version > PLUGIN_API_VERSION
|| hdr->api_version < PLUGIN_MIN_API_VERSION) {
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_WRONG_VERSION));
return -1;
}
plugin_size = hdr->end_addr - pluginbuf;
/* zero out bss area only, above guards end of pluginbuf */
memset(pluginbuf + readsize, 0, plugin_size - readsize);
#endif
plugin_loaded = true;
#ifdef HAVE_LCD_BITMAP
xm = lcd_getxmargin();
ym = lcd_getymargin();
lcd_setmargins(0,0);
#if LCD_DEPTH > 1
old_backdrop = lcd_get_backdrop();
#endif
lcd_clear_display();
lcd_update();
#else /* !HAVE_LCD_BITMAP */
lcd_clear_display();
#endif
#ifdef HAVE_REMOTE_LCD
rxm = lcd_remote_getxmargin();
rym = lcd_remote_getymargin();
lcd_remote_setmargins(0, 0);
lcd_remote_clear_display();
lcd_remote_update();
#endif
invalidate_icache();
rc = hdr->entry_point((struct plugin_api*) &rockbox_api, parameter);
/* explicitly casting the pointer here to avoid touching every plugin. */
button_clear_queue();
#ifdef HAVE_LCD_BITMAP
#if LCD_DEPTH > 1
lcd_set_backdrop(old_backdrop);
#ifdef HAVE_LCD_COLOR
lcd_set_drawinfo(DRMODE_SOLID, global_settings.fg_color,
global_settings.bg_color);
#else
lcd_set_drawinfo(DRMODE_SOLID, LCD_DEFAULT_FG, LCD_DEFAULT_BG);
#endif
#else /* LCD_DEPTH == 1 */
lcd_set_drawmode(DRMODE_SOLID);
#endif /* LCD_DEPTH */
/* restore margins */
lcd_setmargins(xm,ym);
lcd_clear_display();
lcd_update();
#endif /* HAVE_LCD_BITMAP */
#ifdef HAVE_REMOTE_LCD
#if LCD_REMOTE_DEPTH > 1
lcd_remote_set_drawinfo(DRMODE_SOLID, LCD_REMOTE_DEFAULT_FG,
LCD_REMOTE_DEFAULT_BG);
#else
lcd_remote_set_drawmode(DRMODE_SOLID);
#endif
lcd_remote_setmargins(rxm, rym);
lcd_remote_clear_display();
lcd_remote_update();
#endif
if (pfn_tsr_exit == NULL)
plugin_loaded = false;
sim_plugin_close(pd);
switch (rc) {
case PLUGIN_OK:
break;
case PLUGIN_USB_CONNECTED:
return PLUGIN_USB_CONNECTED;
default:
gui_syncsplash(HZ*2, true, str(LANG_PLUGIN_ERROR));
break;
}
return PLUGIN_OK;
}
/* Returns a pointer to the portion of the plugin buffer that is not already
being used. If no plugin is loaded, returns the entire plugin buffer */
void* plugin_get_buffer(int* buffer_size)
{
int buffer_pos;
if (plugin_loaded)
{
if (plugin_size >= PLUGIN_BUFFER_SIZE)
return NULL;
*buffer_size = PLUGIN_BUFFER_SIZE-plugin_size;
buffer_pos = plugin_size;
}
else
{
*buffer_size = PLUGIN_BUFFER_SIZE;
buffer_pos = 0;
}
return &pluginbuf[buffer_pos];
}
/* Returns a pointer to the mp3 buffer.
Playback gets stopped, to avoid conflicts.
Talk buffer is stolen as well.
*/
void* plugin_get_audio_buffer(int* buffer_size)
{
#if CONFIG_CODEC == SWCODEC
return audio_get_buffer(true, (size_t *)buffer_size);
#else
audio_stop();
talk_buffer_steal(); /* we use the mp3 buffer, need to tell */
*buffer_size = audiobufend - audiobuf;
return audiobuf;
#endif
}
#ifdef IRAM_STEAL
/* Initializes plugin IRAM */
void plugin_iram_init(char *iramstart, char *iramcopy, size_t iram_size,
char *iedata, size_t iedata_size)
{
audio_iram_steal();
memcpy(iramstart, iramcopy, iram_size);
memset(iedata, 0, iedata_size);
memset(iramcopy, 0, iram_size);
}
#endif /* IRAM_STEAL */
/* The plugin wants to stay resident after leaving its main function, e.g.
runs from timer or own thread. The callback is registered to later
instruct it to free its resources before a new plugin gets loaded. */
void plugin_tsr(bool (*exit_callback)(bool))
{
pfn_tsr_exit = exit_callback; /* remember the callback for later */
}
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