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sdl.h
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sdl.h
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/* sz81 Copyright (C) 2007-2011 Thunor <thunorsif@hotmail.com>
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* This is how the SDL part of sz81 is organised :-
*
* sdl.h <----- sdl_engine.h ---> sdl_*.h
* ^ ^ ^
* / \ |
* common.c sdl_main.c sdl_*.c
* sound.c
* z80.c
*/
/* Includes */
#include <SDL/SDL.h>
/* Defines */
#define MAX_KEYCODES 358 /* SDL stops at 322 and then I extend them */
/* Interrupt types */
#define INTERRUPT_EMULATOR_RESET 3
#define INTERRUPT_EMULATOR_EXIT 4
/* Machine models */
#define MODEL_ZX81 0
#define MODEL_ZX80 1
/* Load file methods */
#define LOAD_FILE_METHOD_NONE 0
#define LOAD_FILE_METHOD_DETECT 1
#define LOAD_FILE_METHOD_AUTOLOAD 2
#define LOAD_FILE_METHOD_FORCEDLOAD 3
#define LOAD_FILE_METHOD_NAMEDLOAD 4
#define LOAD_FILE_METHOD_SELECTLOAD 5
#define LOAD_FILE_METHOD_SELECTLOADOK 6
#define LOAD_FILE_METHOD_STATELOAD 7
/* Save file methods */
#define SAVE_FILE_METHOD_NAMEDSAVE 1
#define SAVE_FILE_METHOD_UNNAMEDSAVE 2
#define SAVE_FILE_METHOD_STATESAVE 3
/* 16KB was fine for everything but the Wiz is currently experiencing
* linear buffer overflow and so I'm quadrupling it for the Wiz only */
#if defined(PLATFORM_GP2X) && defined (TOOLCHAIN_OPENWIZ)
#define SOUND_BUFFER_SIZE (1024 * 16 * 4)
#elif defined(PLATFORM_DINGUX_A320)
#define SOUND_BUFFER_SIZE (1024 * 16 * 4)
#else
#define SOUND_BUFFER_SIZE (1024 * 16)
#endif
#if defined(PLATFORM_MIYOO)
/* Full Screen */
#define FULL_SCREEN_NO 0
#define FULL_SCREEN_YES 1
#endif
/* Variables */
int keyboard_buffer[MAX_KEYCODES];
struct {
int fullscreen;
int scale;
int xres;
int yres;
char filename[256];
} sdl_com_line;
struct {
int state; /* FALSE=video output/keyboard input disabled, TRUE=all active */
int paused; /* Via Pause key: TRUE=emulation on-hold, keyboard input disabled */
int xoffset;
int yoffset;
SDL_TimerID timer_id;
int m1not;
int speed; /* 10ms=200%, 20ms=100%, 30ms=66%, 40ms=50% */
int frameskip; /* 0 to MAX_FRAMESKIP */
int *model; /* Points to z81's zx80: 0=ZX81, 1=ZX80 */
#if defined(PLATFORM_MIYOO)
int *fullscr; /* 0=NO, 1=YES */
#endif
int ramsize; /* 1, 2, 3, 4, 16, 32, 48 or 56K */
int invert; /* This should really be in video but it's easier to put it here */
int autoload; /* Set to TRUE when auto-loading or forced-loading */
} sdl_emulator;
struct {
int state;
int volume;
int device; /* See DEVICE* defines in sdl_sound.h */
int stereo;
Uint8 buffer[SOUND_BUFFER_SIZE];
int buffer_start;
int buffer_end;
} sdl_sound;
struct {
int state;
unsigned char data[4 * 1024];
} sdl_zx80rom;
struct {
int state;
unsigned char data[8 * 1024];
} sdl_zx81rom;
struct keyrepeat {
int delay;
int interval;
};
struct keyrepeat sdl_key_repeat;
/* Function prototypes */
int sdl_init(void);
int sdl_com_line_process(int argc, char *argv[]);
int sdl_video_setmode(void);
unsigned char *vga_getgraphmem(void);
void sdl_keyboard_init(void);
void sdl_hotspots_init(void);
void sdl_rcfile_read(void);
int sdl_zxroms_init(void);
void sdl_component_executive(void);
void sdl_timer_init(void);
void sdl_zxprinter_init(void);
int keyboard_update(void);
void sdl_video_update(void);
int sdl_sound_init(int freq, int *stereo, int *sixteenbit);
void sdl_sound_callback(void *userdata, Uint8 *stream, int len);
void sdl_sound_frame(unsigned char *data, int len);
void sdl_sound_end(void);
int sdl_filetype_casecmp(char *filename, char *filetype);
int sdl_load_file(int parameter, int method);
int sdl_save_file(int parameter, int method);