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rockbox/apps/plugin.c
Jens Arnold 34a610b1c1 Reset all graphics defaults after returning from plugin. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7142 a1c6a512-1295-4272-9138-f99709370657
2005-07-14 18:12:27 +00:00

570 lines
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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 <stdbool.h>
#include <string.h>
#include <stdio.h>
#include <atoi.h>
#include <timefuncs.h>
#include <ctype.h>
#include "debug.h"
#include "button.h"
#include "lcd.h"
#include "dir.h"
#include "file.h"
#include "kernel.h"
#include "sprintf.h"
#include "logf.h"
#include "screens.h"
#include "misc.h"
#include "mas.h"
#include "plugin.h"
#include "lang.h"
#include "keyboard.h"
#include "mpeg.h"
#include "buffer.h"
#include "mp3_playback.h"
#include "backlight.h"
#include "ata.h"
#include "talk.h"
#include "mp3data.h"
#include "powermgmt.h"
#include "system.h"
#include "sound.h"
#include "database.h"
#if (CONFIG_HWCODEC == MASNONE)
#include "pcm_playback.h"
#endif
#ifdef HAVE_LCD_BITMAP
#include "peakmeter.h"
#include "widgets.h"
#include "bmp.h"
#endif
#ifdef HAVE_REMOTE_LCD
#include "lcd-remote.h"
#endif
#ifdef SIMULATOR
static unsigned char pluginbuf[PLUGIN_BUFFER_SIZE];
void *sim_plugin_load(char *plugin, int *fd);
void sim_plugin_close(int fd);
#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;
#ifndef SIMULATOR
static void (*pfn_timer)(void) = NULL; /* user timer handler */
#endif
static void (*pfn_tsr_exit)(void) = NULL; /* TSR exit callback */
static int plugin_test(int api_version, int model, int memsize);
static const struct plugin_api rockbox_api = {
PLUGIN_API_VERSION,
plugin_test,
/* 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),
#else
#ifndef SIMULATOR
lcd_roll,
#endif
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,
lcd_putsxy,
lcd_puts_style,
lcd_puts_scroll_style,
&lcd_framebuffer[0][0],
lcd_blit,
lcd_update,
lcd_update_rect,
scrollbar,
checkbox,
font_get,
#endif
backlight_on,
backlight_off,
backlight_set_timeout,
splash,
#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,
#ifndef SIMULATOR
lcd_remote_roll,
#endif
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,
lcd_remote_backlight_on,
lcd_remote_backlight_off,
#endif
/* button */
button_get,
button_get_w_tmo,
button_status,
button_clear_queue,
#if CONFIG_KEYPAD == IRIVER_H100_PAD
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,
#endif
/* dir */
PREFIX(opendir),
PREFIX(closedir),
PREFIX(readdir),
PREFIX(mkdir),
/* 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
#endif
/* strings and memory */
snprintf,
strcpy,
strncpy,
strlen,
strrchr,
strcmp,
strcasecmp,
strncasecmp,
memset,
memcpy,
_ctype_,
atoi,
strchr,
strcat,
memcmp,
strcasestr,
/* sound */
sound_set,
#ifndef SIMULATOR
mp3_play_data,
mp3_play_pause,
mp3_play_stop,
mp3_is_playing,
#if CONFIG_HWCODEC != MASNONE
bitswap,
#endif
#if CONFIG_HWCODEC == MASNONE
pcm_play_data,
pcm_play_stop,
pcm_set_frequency,
pcm_is_playing,
pcm_play_pause,
#endif
#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_HWCODEC != MASNONE)
mpeg_get_last_header,
#endif
#if (CONFIG_HWCODEC == MAS3587F) || (CONFIG_HWCODEC == MAS3539F)
sound_set_pitch,
#endif
#if !defined(SIMULATOR) && (CONFIG_HWCODEC != MASNONE)
/* MAS communication */
mas_readmem,
mas_writemem,
mas_readreg,
mas_writereg,
#if (CONFIG_HWCODEC == MAS3587F) || (CONFIG_HWCODEC == MAS3539F)
mas_codec_writereg,
mas_codec_readreg,
#endif
#endif /* !simulator and HWCODEC != MASNONE */
/* tag database */
&tagdbheader,
&tagdb_fd,
&tagdb_initialized,
tagdb_init,
/* misc */
srand,
rand,
(qsort_func)qsort,
kbd_input,
get_time,
set_time,
plugin_get_buffer,
plugin_get_audio_buffer,
#ifndef SIMULATOR
plugin_register_timer,
plugin_unregister_timer,
#endif
plugin_tsr,
#if defined(DEBUG) || defined(SIMULATOR)
debugf,
#endif
&global_settings,
mp3info,
count_mp3_frames,
create_xing_header,
find_next_frame,
battery_level,
battery_level_safe,
#if (CONFIG_HWCODEC == MAS3587F) || (CONFIG_HWCODEC == MAS3539F)
peak_meter_scale_value,
peak_meter_set_use_dbfs,
peak_meter_get_use_dbfs,
#endif
#ifdef HAVE_LCD_BITMAP
read_bmp_file,
#endif
/* new stuff at the end, sort into place next time
the API gets incompatible */
#ifdef ROCKBOX_HAS_LOGF
logf,
#endif
&rundbheader,
&rundb_fd,
&rundb_initialized,
strncmp,
#if LCD_DEPTH > 1
lcd_set_foreground,
lcd_get_foreground,
lcd_set_background,
lcd_get_background,
lcd_bitmap_part,
lcd_bitmap,
#endif
};
int plugin_load(const char* plugin, void* parameter)
{
enum plugin_status (*plugin_start)(struct plugin_api* api, void* param);
int rc;
#ifndef SIMULATOR
char buf[64];
#endif
int fd;
#ifdef HAVE_LCD_BITMAP
int xm,ym;
#endif
if (pfn_tsr_exit != NULL) /* if we have a resident old plugin: */
{
pfn_tsr_exit(); /* force it to exit now */
pfn_tsr_exit = NULL;
}
#ifdef HAVE_LCD_BITMAP
lcd_clear_display();
xm = lcd_getxmargin();
ym = lcd_getymargin();
lcd_setmargins(0,0);
lcd_update();
#else
lcd_clear_display();
#endif
#ifdef SIMULATOR
plugin_start = sim_plugin_load((char *)plugin, &fd);
if(!plugin_start)
return -1;
#else
fd = open(plugin, O_RDONLY);
if (fd < 0) {
snprintf(buf, sizeof buf, str(LANG_PLUGIN_CANT_OPEN), plugin);
splash(HZ*2, true, buf);
return fd;
}
/* zero out plugin buffer to ensure a properly zeroed bss area */
memset(pluginbuf, 0, PLUGIN_BUFFER_SIZE);
plugin_start = (void*)&pluginbuf;
plugin_size = read(fd, plugin_start, PLUGIN_BUFFER_SIZE);
close(fd);
if (plugin_size < 0) {
/* read error */
snprintf(buf, sizeof buf, str(LANG_READ_FAILED), plugin);
splash(HZ*2, true, buf);
return -1;
}
if (plugin_size == 0) {
/* loaded a 0-byte plugin, implying it's not for this model */
splash(HZ*2, true, str(LANG_PLUGIN_WRONG_MODEL));
return -1;
}
#endif
plugin_loaded = true;
invalidate_icache();
rc = plugin_start((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_drawinfo(DRMODE_SOLID, 0, MAX_LEVEL);
#else
lcd_set_drawmode(DRMODE_SOLID);
#endif
#endif
plugin_loaded = false;
switch (rc) {
case PLUGIN_OK:
break;
case PLUGIN_USB_CONNECTED:
return PLUGIN_USB_CONNECTED;
case PLUGIN_WRONG_API_VERSION:
splash(HZ*2, true, str(LANG_PLUGIN_WRONG_VERSION));
break;
case PLUGIN_WRONG_MODEL:
splash(HZ*2, true, str(LANG_PLUGIN_WRONG_MODEL));
break;
default:
splash(HZ*2, true, str(LANG_PLUGIN_ERROR));
break;
}
sim_plugin_close(fd);
#ifdef HAVE_LCD_BITMAP
/* restore margins */
lcd_setmargins(xm,ym);
#endif
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. */
void* plugin_get_audio_buffer(int* buffer_size)
{
audio_stop();
talk_buffer_steal(); /* we use the mp3 buffer, need to tell */
*buffer_size = audiobufend - audiobuf;
return audiobuf;
}
#ifndef SIMULATOR
/* Register a periodic time callback, called every "cycles" CPU clocks.
Note that this function will be called in interrupt context! */
int plugin_register_timer(int cycles, int prio, void (*timer_callback)(void))
{
int phi = 0; /* bits for the prescaler */
int prescale = 1;
while (cycles > 0x10000)
{ /* work out the smallest prescaler that makes it fit */
phi++;
prescale *= 2;
cycles /= 2;
}
if (prescale > 8 || cycles == 0 || prio < 1 || prio > 15)
return 0; /* error, we can't do such period, bad argument */
backlight_allow_timer(false); /* stop backlight from messing with the timer */
#if CONFIG_CPU == SH7034
and_b(~0x10, &TSTR); /* Stop the timer 4 */
and_b(~0x10, &TSNC); /* No synchronization */
and_b(~0x10, &TMDR); /* Operate normally */
pfn_timer = timer_callback; /* install 2nd level ISR */
and_b(~0x01, &TSR4);
TIER4 = 0xF9; /* Enable GRA match interrupt */
GRA4 = (unsigned short)(cycles - 1);
TCR4 = 0x20 | phi; /* clear at GRA match, set prescaler */
IPRD = (IPRD & 0xFF0F) | prio << 4; /* interrupt priority */
or_b(0x10, &TSTR); /* start timer 4 */
#else
pfn_timer = timer_callback;
#endif
return cycles * prescale; /* return the actual period, in CPU clocks */
}
/* disable the user timer */
void plugin_unregister_timer(void)
{
#if CONFIG_CPU == SH7034
and_b(~0x10, &TSTR); /* stop the timer 4 */
IPRD = (IPRD & 0xFF0F); /* disable interrupt */
pfn_timer = NULL;
#endif
backlight_allow_timer(true);
}
#if CONFIG_CPU == SH7034
/* interrupt handler for user timer */
#pragma interrupt
void IMIA4(void)
{
if (pfn_timer != NULL)
pfn_timer(); /* call the user timer function */
and_b(~0x01, &TSR4); /* clear the interrupt */
}
#endif /* CONFIG_CPU == SH7034 */
#endif /* #ifndef SIMULATOR */
/* 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(void (*exit_callback)(void))
{
pfn_tsr_exit = exit_callback; /* remember the callback for later */
}
static int plugin_test(int api_version, int model, int memsize)
{
if (api_version < PLUGIN_MIN_API_VERSION ||
api_version > PLUGIN_API_VERSION)
return PLUGIN_WRONG_API_VERSION;
if (model != MODEL)
return PLUGIN_WRONG_MODEL;
if (memsize != MEM)
return PLUGIN_WRONG_MODEL;
return PLUGIN_OK;
}
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