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rockbox/apps/gui/skin_engine/skin_engine.c
Frank Gevaerts 21ddcbec66 CHARCELL doesn't have sbs support, so disable it properly. 
This actually fixes a nullpointer dereference.

Change-Id: Ie3e153d72bcacdce46bfe5a514ff77aebdfd7225
2012-06-19 21:53:29 +02:00

300 lines
8.5 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Stuart Martin
* RTC config saving code (C) 2002 by hessu@hes.iki.fi
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <limits.h>
#include "inttypes.h"
#include "config.h"
#include "action.h"
#include "crc32.h"
#include "settings.h"
#include "wps.h"
#include "file.h"
#if CONFIG_TUNER
#include "radio.h"
#endif
#include "skin_engine.h"
#include "skin_buffer.h"
#include "statusbar-skinned.h"
#define FAILSAFENAME "rockbox_failsafe"
void skin_data_free_buflib_allocs(struct wps_data *wps_data);
char* wps_default_skin(enum screen_type screen);
char* default_radio_skin(enum screen_type screen);
static bool skins_initialised = false;
static char* get_skin_filename(char *buf, size_t buf_size,
enum skinnable_screens skin, enum screen_type screen);
struct wps_state wps_state = { .id3 = NULL };
static struct gui_skin_helper {
int (*preproccess)(enum screen_type screen, struct wps_data *data);
int (*postproccess)(enum screen_type screen, struct wps_data *data);
char* (*default_skin)(enum screen_type screen);
bool load_on_boot;
} skin_helpers[SKINNABLE_SCREENS_COUNT] = {
#ifdef HAVE_LCD_BITMAP
[CUSTOM_STATUSBAR] = { sb_preproccess, sb_postproccess, sb_create_from_settings, true },
#endif
[WPS] = { NULL, NULL, wps_default_skin, true },
#if CONFIG_TUNER
[FM_SCREEN] = { NULL, NULL, default_radio_skin, false }
#endif
};
static struct gui_skin {
char filename[MAX_PATH];
struct gui_wps gui_wps;
struct wps_data data;
char *buffer_start;
size_t buffer_usage;
bool failsafe_loaded;
bool needs_full_update;
} skins[SKINNABLE_SCREENS_COUNT][NB_SCREENS];
static void gui_skin_reset(struct gui_skin *skin)
{
skin->filename[0] = '\0';
skin->buffer_start = NULL;
skin->failsafe_loaded = false;
skin->needs_full_update = true;
skin->gui_wps.data = &skin->data;
memset(skin->gui_wps.data, 0, sizeof(struct wps_data));
skin->data.wps_loaded = false;
skin->data.buflib_handle = -1;
skin->data.tree = -1;
#ifdef HAVE_TOUCHSCREEN
skin->data.touchregions = -1;
#endif
#ifdef HAVE_SKIN_VARIABLES
skin->data.skinvars = -1;
#endif
#ifdef HAVE_LCD_BITMAP
skin->data.font_ids = -1;
skin->data.images = -1;
#endif
#ifdef HAVE_ALBUMART
skin->data.albumart = -1;
skin->data.playback_aa_slot = -1;
#endif
#ifdef HAVE_BACKDROP_IMAGE
skin->gui_wps.data->backdrop_id = -1;
#endif
}
void gui_sync_skin_init(void)
{
int j;
for(j=0; j<SKINNABLE_SCREENS_COUNT; j++)
{
FOR_NB_SCREENS(i)
{
skin_data_free_buflib_allocs(&skins[j][i].data);
gui_skin_reset(&skins[j][i]);
skins[j][i].gui_wps.display = &screens[i];
}
}
}
void skin_unload_all(void)
{
gui_sync_skin_init();
}
void settings_apply_skins(void)
{
int i;
char filename[MAX_PATH];
static bool first_run = true;
#ifdef HAVE_LCD_BITMAP
skin_backdrop_init();
#endif
skins_initialised = true;
/* Make sure each skin is loaded */
for (i=0; i<SKINNABLE_SCREENS_COUNT; i++)
{
FOR_NB_SCREENS(j)
{
get_skin_filename(filename, MAX_PATH, i,j);
if (!first_run)
{
skin_data_free_buflib_allocs(&skins[i][j].data);
#ifdef HAVE_BACKDROP_IMAGE
if (skins[i][j].data.backdrop_id >= 0)
skin_backdrop_unload(skins[i][j].data.backdrop_id);
#endif
}
gui_skin_reset(&skins[i][j]);
skins[i][j].gui_wps.display = &screens[j];
if (skin_helpers[i].load_on_boot)
skin_get_gwps(i, j);
}
}
first_run = false;
viewportmanager_theme_changed(THEME_STATUSBAR);
#ifdef HAVE_BACKDROP_IMAGE
FOR_NB_SCREENS(i)
skin_backdrop_show(sb_get_backdrop(i));
#endif
}
void skin_load(enum skinnable_screens skin, enum screen_type screen,
const char *buf, bool isfile)
{
bool loaded = false;
if (skin_helpers[skin].preproccess)
skin_helpers[skin].preproccess(screen, &skins[skin][screen].data);
if (buf && *buf)
loaded = skin_data_load(screen, &skins[skin][screen].data, buf, isfile);
if (loaded)
strcpy(skins[skin][screen].filename, buf);
if (!loaded && skin_helpers[skin].default_skin)
{
loaded = skin_data_load(screen, &skins[skin][screen].data,
skin_helpers[skin].default_skin(screen), false);
skins[skin][screen].failsafe_loaded = loaded;
}
skins[skin][screen].needs_full_update = true;
if (skin_helpers[skin].postproccess)
skin_helpers[skin].postproccess(screen, &skins[skin][screen].data);
#ifdef HAVE_BACKDROP_IMAGE
if (loaded)
skin_backdrops_preload();
#endif
}
static char* get_skin_filename(char *buf, size_t buf_size,
enum skinnable_screens skin, enum screen_type screen)
{
(void)screen;
char *setting = NULL, *ext = NULL;
switch (skin)
{
#ifdef HAVE_LCD_BITMAP
case CUSTOM_STATUSBAR:
#if defined(HAVE_REMOTE_LCD) && NB_SCREENS > 1
if (screen == SCREEN_REMOTE)
{
setting = global_settings.rsbs_file;
ext = "rsbs";
}
else
#endif
{
setting = global_settings.sbs_file;
ext = "sbs";
}
break;
#endif
case WPS:
#if defined(HAVE_REMOTE_LCD) && NB_SCREENS > 1
if (screen == SCREEN_REMOTE)
{
setting = global_settings.rwps_file;
ext = "rwps";
}
else
#endif
{
setting = global_settings.wps_file;
ext = "wps";
}
break;
#if CONFIG_TUNER
case FM_SCREEN:
#if defined(HAVE_REMOTE_LCD) && NB_SCREENS > 1
if (screen == SCREEN_REMOTE)
{
setting = global_settings.rfms_file;
ext = "rfms";
}
else
#endif
{
setting = global_settings.fms_file;
ext = "fms";
}
break;
#endif
default:
return NULL;
}
buf[0] = '\0'; /* force it to reload the default */
if (strcmp(setting, FAILSAFENAME) && strcmp(setting, "-"))
{
snprintf(buf, buf_size, WPS_DIR "/%s.%s", setting, ext);
}
return buf;
}
struct gui_wps *skin_get_gwps(enum skinnable_screens skin, enum screen_type screen)
{
#ifdef HAVE_LCD_BITMAP
if (skin == CUSTOM_STATUSBAR && !skins_initialised)
return &skins[skin][screen].gui_wps;
#endif
if (skins[skin][screen].data.wps_loaded == false)
{
char filename[MAX_PATH];
char *buf = get_skin_filename(filename, MAX_PATH, skin, screen);
cpu_boost(true);
skins[skin][screen].filename[0] = '\0';
skin_load(skin, screen, buf, true);
cpu_boost(false);
}
return &skins[skin][screen].gui_wps;
}
struct wps_state *skin_get_global_state(void)
{
return &wps_state;
}
/* This is called to find out if we the screen needs a full update.
* if true you MUST do a full update as the next call will return false */
bool skin_do_full_update(enum skinnable_screens skin,
enum screen_type screen)
{
bool ret = skins[skin][screen].needs_full_update;
skins[skin][screen].needs_full_update = false;
return ret;
}
/* tell a skin to do a full update next time */
void skin_request_full_update(enum skinnable_screens skin)
{
FOR_NB_SCREENS(i)
skins[skin][i].needs_full_update = true;
}
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