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Genesis-Plus-GX/source/gx/config.c

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/****************************************************************************
* config.c
*
* Genesis Plus GX configuration file support
*
* Copyright Eke-Eke (2007-2012)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:
*
* - Redistributions may not be sold, nor may they be used in a commercial
* product or activity.
*
* - Redistributions that are modified from the original source must include the
* complete source code, including the source code for all components used by a
* binary built from the modified sources. However, as a special exception, the
* source code distributed need not include anything that is normally distributed
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#include "shared.h"
#include "gui.h"
#include "file_load.h"
static int config_load(void)
{
/* open configuration file */
char fname[MAXPATHLEN];
sprintf (fname, "%s/config.ini", DEFAULT_PATH);
FILE *fp = fopen(fname, "rb");
if (fp)
{
/* check file size */
fseek(fp, 0, SEEK_END);
if (ftell(fp) != sizeof(config))
{
fclose(fp);
return 0;
}
/* check version */
char version[16];
fseek(fp, 0, SEEK_SET);
fread(version, 16, 1, fp);
if (memcmp(version,CONFIG_VERSION,16))
{
fclose(fp);
return 0;
}
/* read file */
fseek(fp, 0, SEEK_SET);
fread(&config, sizeof(config), 1, fp);
fclose(fp);
return 1;
}
return 0;
}
void config_save(void)
{
/* open configuration file */
char fname[MAXPATHLEN];
sprintf (fname, "%s/config.ini", DEFAULT_PATH);
FILE *fp = fopen(fname, "wb");
if (fp)
{
/* write file */
fwrite(&config, sizeof(config), 1, fp);
fclose(fp);
}
}
void config_default(void)
{
/* version TAG */
strncpy(config.version,CONFIG_VERSION,16);
/* sound options */
config.psg_preamp = 150;
config.fm_preamp = 100;
config.hq_fm = 1;
config.psgBoostNoise = 1;
config.filter = 0;
config.lp_range = 60;
config.low_freq = 880;
config.high_freq = 5000;
config.lg = 1.0;
config.mg = 1.0;
config.hg = 1.0;
config.dac_bits = 14;
config.ym2413 = 2; /* AUTO */
/* system options */
config.system = 0; /* AUTO */
config.region_detect = 0; /* AUTO */
config.vdp_mode = 0; /* AUTO */
config.master_clock = 0; /* AUTO */
config.force_dtack = 0;
config.addr_error = 1;
config.bios = 0;
config.lock_on = 0;
config.hot_swap = 0;
/* video options */
config.xshift = 0;
config.yshift = 0;
config.xscale = 0;
config.yscale = 0;
config.aspect = 1;
config.overscan = 3; /* FULL */
config.gg_extra = 0;
config.ntsc = 0;
config.vsync = 1; /* AUTO */
if (VIDEO_HaveComponentCable())
{
config.render = 2;
config.bilinear = 1;
}
else
{
config.render = 0;
config.bilinear = 0;
}
switch (vmode->viTVMode >> 2)
{
case VI_PAL:
config.tv_mode = 1; /* 50hz only */
break;
case VI_EURGB60:
config.tv_mode = 2; /* 50/60hz */
break;
default:
config.tv_mode = 0; /* 60hz only */
break;
}
#ifdef HW_RVL
config.trap = 0;
config.gamma = VI_GM_1_0 / 10.0;
#endif
/* controllers options */
config.gun_cursor[0] = 1;
config.gun_cursor[1] = 1;
config.invert_mouse = 0;
/* on-screen options */
config.cd_leds = 0;
/* menu options */
config.autoload = 0;
config.autocheat = 0;
#ifdef HW_RVL
config.s_auto = 1;
#else
config.s_auto = 0;
config.v_prog = 1;
#endif
config.s_default = 1;
config.s_device = 0;
config.l_device = 0;
config.bg_overlay = 0;
config.screen_w = 658;
config.bgm_volume = 100.0;
config.sfx_volume = 100.0;
/* default ROM directories */
#ifdef HW_RVL
sprintf (config.lastdir[0][TYPE_SD], "sd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[1][TYPE_SD], "sd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[2][TYPE_SD], "sd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[3][TYPE_SD], "sd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[4][TYPE_SD], "sd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[0][TYPE_USB], "usb:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[1][TYPE_USB], "usb:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[2][TYPE_USB], "usb:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[3][TYPE_USB], "usb:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[4][TYPE_USB], "usb:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[0][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[1][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[2][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[3][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[4][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
#else
sprintf (config.lastdir[0][TYPE_SD], "%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[1][TYPE_SD], "%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[2][TYPE_SD], "%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[3][TYPE_SD], "%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[4][TYPE_SD], "%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[0][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[1][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[2][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[3][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
sprintf (config.lastdir[4][TYPE_DVD], "dvd:%s/roms/", DEFAULT_PATH);
#endif
/* try to restore user config */
int loaded = config_load();
#ifndef HW_RVL
/* detect progressive mode enable/disable requests */
PAD_ScanPads();
if (PAD_ButtonsHeld(0) & PAD_BUTTON_B)
{
/* swap progressive mode enable flag and play some sound to inform user */
config.v_prog ^= 1;
ASND_Pause(0);
int voice = ASND_GetFirstUnusedVoice();
ASND_SetVoice(voice,VOICE_MONO_16BIT,44100,0,(u8 *)intro_pcm,intro_pcm_size,200,200,NULL);
sleep (2);
ASND_Pause(1);
}
/* switch into 480p if component cable has been detected and progressive mode is enabled */
if (VIDEO_HaveComponentCable() && config.v_prog)
{
vmode = &TVNtsc480Prog;
VIDEO_Configure (vmode);
VIDEO_Flush();
VIDEO_WaitVSync();
VIDEO_WaitVSync();
}
#endif
/* inform user if default config is used */
if (!loaded)
{
GUI_WaitPrompt("Warning","Default Settings restored");
gx_input_SetDefault();
}
/* default emulated inputs */
input.system[0] = SYSTEM_MD_GAMEPAD;
input.system[1] = (config.input[1].device != -1) ? SYSTEM_MD_GAMEPAD : NO_SYSTEM;
input_init();
}
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