int init_sdl_audio(void)
{
if (sound_initialize==GN_TRUE)
close_sdl_audio();
sound_initialize=GN_TRUE;
SDL_InitSubSystem(SDL_INIT_AUDIO);
desired = (SDL_AudioSpec *) malloc(sizeof(SDL_AudioSpec));
obtain = (SDL_AudioSpec *) malloc(sizeof(SDL_AudioSpec));
audio_sample_rate = conf.sample_rate;
desired->freq = conf.sample_rate;
desired->samples = NB_SAMPLES;
#ifdef WORDS_BIGENDIAN
desired->format = AUDIO_S16MSB;
#else /* */
desired->format = AUDIO_S16;
#endif /* */
desired->channels = 2;
desired->callback = update_sdl_stream;
//desired->callback = NULL;
desired->userdata = NULL;
//SDL_OpenAudio(desired, NULL);
SDL_OpenAudio(desired, obtain);
printf("Obtained sample rate: %d\n",obtain->freq);
conf.sample_rate=obtain->freq;
return GN_TRUE;
}
/* sound */
static int toggle_sound(CHECK_BUTTON *self) {
if (conf.sound) {
conf.sound=0;
close_sdl_audio();
} else {
conf.sound=1;
init_sdl_audio();
}
return TAKE_EVENT;
}
SDL_bool init_game(char *rom_name) {
DRIVER *dr;
char *drconf,*gpath;
dr=dr_get_by_name(rom_name);
if (!dr) {
#ifdef USE_GUI
gui_error_box(20,80,264,60,
"Error!","No valid romset found for\n%s\n",
file_basename(rom_name));
#else
printf("No valid romset found for %s\n",rom_name);
#endif
return SDL_FALSE;
}
if (conf.game!=NULL) {
save_nvram(conf.game);
if (conf.sound) {
close_sdl_audio();
YM2610_sh_stop();
streams_sh_stop();
}
free_game_memory();
}
/* open transpack if need */
trans_pack_open(CF_STR(cf_get_item_by_name("transpack")));
//open_rom(rom_name);
if (dr_load_game(dr,rom_name)==SDL_FALSE) {
#ifdef USE_GUI
gui_error_box(20,80,264,60,
"Error!","Couldn't load\n%s\n",
file_basename(rom_name));
#else
printf("Can't load %s\n",rom_name);
#endif
return SDL_FALSE;
}
/* per game config */
gpath=get_gngeo_dir();
drconf=alloca(strlen(gpath)+strlen(dr->name)+strlen(".cf")+1);
sprintf(drconf,"%s%s.cf",gpath,dr->name);
cf_open_file(drconf);
open_bios();
open_nvram(conf.game);
init_sdl();
sdl_set_title(conf.game);
init_neo(conf.game);
if (conf.sound)
init_sdl_audio();
return SDL_TRUE;
}
static void gngeo_quit(void) {
if (conf.sound)
close_sdl_audio();
}
bool load_state(char *game,int slot) {
char *st_name;
// char *st_name_len;
char *gngeo_dir=DATA_DIRECTORY"/save/";
#ifdef WORDS_BIGENDIAN
Uint8 my_endian=1;
#else
Uint8 my_endian=0;
#endif
int i;
gzFile *gzf;
char string[20];
Uint8 a,num;
ST_DATA_TYPE type;
void *data;
Uint32 len;
Uint8 endian;
Uint32 rate;
st_name=(char*)alloca(strlen(gngeo_dir)+strlen(game)+5);
sprintf(st_name,"%s%s.%03d",gngeo_dir,game,slot);
if ((gzf=gzopen(st_name,"rb"))==NULL) {
printf("%s not found\n",st_name);
return false;
}
memset(string,0,20);
gzread(gzf,string,6);
if (strcmp(string,"GNGST1")) {
printf("%s is not a valid gngeo st file\n",st_name);
gzclose(gzf);
return false;
}
gzread(gzf,&endian,1);
if (my_endian!=endian) {
printf("This save state comme from a different endian architecture.\n"
"This is not currently supported :(\n");
return false;
}
gzread(gzf,&rate,4);
swap_buf32_if_need(endian,&rate,1);
if (rate==0 && conf.sound) {
/* disable sound */
conf.sound=0;
SDL_PauseAudio(1);
close_sdl_audio();
} else if (rate!=0 && conf.sound==0) {
/* enable sound */
conf.sound=1;
conf.sample_rate=rate;
if (!conf.snd_st_reg_create) {
cpu_z80_init();
init_sdl_audio();
streams_sh_start();
YM2610_sh_start();
conf.snd_st_reg_create=1;
} else
init_sdl_audio();
SDL_PauseAudio(0);
} else if (rate!=conf.sample_rate && conf.sound) {
conf.sample_rate=rate;
close_sdl_audio();
init_sdl_audio();
}
gzread(gzf,state_img->pixels,304*224*2);
swap_buf16_if_need(endian,state_img->pixels,304*224);
while(!gzeof(gzf)) {
gzread(gzf,&a,1); /* name size */
memset(string,0,20);
gzread(gzf,string,a); /* regname */
gzread(gzf,&num,1); /* regname num */
gzread(gzf,&a,1); /* module id */
gzread(gzf,&len,4);
gzread(gzf,&type,1);
data=find_data_by_name(a,num,string);
if (data) {
gzread(gzf,data,len);
switch(type) {
case REG_UINT16:
case REG_INT16:
swap_buf16_if_need(endian,data,len>>1);
break;
case REG_UINT32:
case REG_INT32:
swap_buf32_if_need(endian,data,len>>2);
break;
case REG_INT8:
case REG_UINT8:
/* nothing */
break;
}
} else {
/* unknow reg, ignore it*/
printf("skeeping unknow reg %s\n",string);
gzseek(gzf,len,SEEK_CUR);
}
// /*if (a==ST_68k)*/ printf("LO %02d %20s %02x %08x \n",a,string,num,len/*,*(Uint32*)data*/);
}