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rockbox/apps/plugin.c
Hristo Kovachev cc6f37b8d8 "Next/Previous jpeg from within the JPEG viewer" addition by Alexander Spyridakis, modified a bit by me 
Also tries to use the plugin buffer instead of the audio buffer on the platforms with more than 130kb plugin buffer size (thus not stopping the music playback). If the free buffer from the plugin buffer is not enough, asks for stopping playback. Needs a little more work, but seems stable as it is.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8728 a1c6a512-1295-4272-9138-f99709370657
2006-02-18 20:51:34 +00:00

597 lines
13 KiB
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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 "usb.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 "timer.h"
#include "sound.h"
#include "database.h"
#include "splash.h"
#if (CONFIG_CODEC == SWCODEC)
#include "pcm_playback.h"
#endif
#ifdef HAVE_CHARGING
#include "power.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;
static void (*pfn_tsr_exit)(void) = NULL; /* TSR exit callback */
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
#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,
#if LCD_DEPTH > 1
lcd_set_foreground,
lcd_get_foreground,
lcd_set_background,
lcd_get_background,
lcd_bitmap_part,
lcd_bitmap,
#endif
#if LCD_DEPTH == 16
lcd_bitmap_transparent_part,
lcd_bitmap_transparent,
#endif
lcd_putsxy,
lcd_puts_style,
lcd_puts_scroll_style,
&lcd_framebuffer[0][0],
lcd_blit,
lcd_update,
lcd_update_rect,
scrollbar,
checkbox,
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,
#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,
remote_backlight_on,
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,
ata_disk_is_active,
#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
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
/* strings and memory */
snprintf,
strcpy,
strncpy,
strlen,
strrchr,
strcmp,
strncmp,
strcasecmp,
strncasecmp,
memset,
memcpy,
memmove,
_ctype_,
atoi,
strchr,
strcat,
memcmp,
strcasestr,
/* unicode stuff */
utf8decode,
iso_decode,
utf16LEdecode,
utf16BEdecode,
utf8encode,
utf8length,
/* sound */
sound_set,
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
/* 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)
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,
#endif
#endif /* !SIMULATOR && CONFIG_CODEC != SWCODEC */
/* tag database */
&tagdbheader,
&tagdb_fd,
&tagdb_initialized,
tagdb_init,
/* runtime database */
&rundbheader,
&rundb_fd,
&rundb_initialized,
/* 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,
/* power */
battery_level,
battery_level_safe,
battery_time,
#ifndef SIMULATOR
battery_voltage,
#endif
#ifdef HAVE_CHARGING
charger_inserted,
# ifdef HAVE_CHARGE_STATE
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,
/* new stuff at the end, sort into place next time
the API gets incompatible */
tree_get_context,
};
int plugin_load(const char* plugin, void* parameter)
{
int fd, rc;
struct plugin_header *hdr;
#ifndef SIMULATOR
ssize_t readsize;
#endif
#ifdef HAVE_LCD_BITMAP
int xm, ym;
#endif
#ifdef HAVE_REMOTE_LCD
int rxm, rym;
#endif
#ifdef HAVE_LCD_COLOR
fb_data* old_backdrop;
#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;
plugin_loaded = false;
}
gui_syncsplash(0, true, str(LANG_WAIT));
#ifdef SIMULATOR
hdr = sim_plugin_load((char *)plugin, &fd);
if (!fd) {
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(fd);
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(fd);
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;
}
/* zero out plugin buffer to ensure a properly zeroed bss area */
memset(pluginbuf, 0, PLUGIN_BUFFER_SIZE);
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;
#endif
plugin_loaded = true;
#ifdef HAVE_LCD_BITMAP
xm = lcd_getxmargin();
ym = lcd_getymargin();
lcd_setmargins(0,0);
#ifdef HAVE_LCD_COLOR
old_backdrop = lcd_get_backdrop();
lcd_set_backdrop(NULL);
#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_drawinfo(DRMODE_SOLID, LCD_DEFAULT_FG, LCD_DEFAULT_BG);
#else /* LCD_DEPTH == 1 */
lcd_set_drawmode(DRMODE_SOLID);
#endif /* LCD_DEPTH */
/* restore margins */
lcd_setmargins(xm,ym);
#ifdef HAVE_LCD_COLOR
lcd_set_backdrop(old_backdrop);
#endif
lcd_clear_display();
lcd_update();
#endif /* HAVE_LCD_BITMAP */
#ifdef HAVE_REMOTE_LCD
lcd_remote_set_drawmode(DRMODE_SOLID);
lcd_remote_setmargins(rxm, rym);
lcd_remote_clear_display();
lcd_remote_update();
#endif
if (pfn_tsr_exit == NULL)
plugin_loaded = false;
sim_plugin_close(fd);
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. */
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;
}
/* 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 */
}
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