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unix.cpp
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unix.cpp
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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
* Jerremy Koot (jkoot@snes9x.com)
*
* Super FX C emulator code
* (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
* Gary Henderson.
* Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
*
* DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
* C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
* C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
*
* DOS port code contains the works of other authors. See headers in
* individual files.
*
* Snes9x homepage: http://www.snes9x.com
*
* Permission to use, copy, modify and distribute Snes9x in both binary and
* source form, for non-commercial purposes, is hereby granted without fee,
* providing that this license information and copyright notice appear with
* all copies and any derived work.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event shall the authors be held liable for any damages
* arising from the use of this software.
*
* Snes9x is freeware for PERSONAL USE only. Commercial users should
* seek permission of the copyright holders first. Commercial use includes
* charging money for Snes9x or software derived from Snes9x.
*
* The copyright holders request that bug fixes and improvements to the code
* should be forwarded to them so everyone can benefit from the modifications
* in future versions.
*
* Super NES and Super Nintendo Entertainment System are trademarks of
* Nintendo Co., Limited and its subsidiary companies.
*/
#include <signal.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <ctype.h>
#include <dirent.h>
#include <SDL/SDL.h>
#include <glib.h>
#include "keys.h"
#include "keyconstants.h"
#undef USE_THREADS
#define USE_THREADS
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#ifdef USE_THREADS
#include <pthread.h>
#include <sched.h>
pthread_t thread;
pthread_mutex_t mutex;
#endif
#include <sys/soundcard.h>
#include <sys/mman.h>
#include "snes9x.h"
#include "memmap.h"
#include "debug.h"
#include "cpuexec.h"
#include "ppu.h"
#include "snapshot.h"
#include "apu.h"
#include "display.h"
#include "gfx.h"
#include "soundux.h"
#include "spc700.h"
#include <alsa/asoundlib.h>
#include <bcm_host.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
typedef struct alsa
{
snd_pcm_t *pcm;
size_t buffer_size_bytes;
size_t period_size_bytes;
snd_pcm_uframes_t period_size_frames;
short *audioBuffer;
int thread_running;
} alsa_t;
static alsa_t *g_alsa;
static int fifo_underrun;
static int fifo_overrun;
static int snd_underrun;
static void alsa_free(void *data);
uint8 *keyssnes;
int OldSkipFrame;
uint8 joy_buttons[2][32];
uint8 joy_axes[2][8];
int joyaxis_LR, joyaxis_UD;
void InitTimer ();
void *S9xProcessSound (void *);
void S9xParseConfigFile (void);
static alsa_t *alsa_init(void);
extern void S9xDisplayFrameRate (uint8 *, uint32);
extern void S9xDisplayString (const char *string, uint8 *, uint32);
extern unsigned short *screen;
static uint32 ffc = 0;
bool8_32 nso = FALSE, vga = FALSE;
uint32 xs = 256, ys = 240, cl = 0, cs = 0, mfs = 10;
void gles2_draw(short *screen, int width, int height);
extern EGLDisplay display;
extern EGLSurface surface;
char *rom_filename = NULL;
char *snapshot_filename = NULL;
void OutOfMemory ()
{
fprintf (stderr, "\
Snes9X: Memory allocation failure - not enough RAM/virtual memory available.\n\
S9xExiting...\n");
Memory.Deinit ();
S9xDeinitAPU ();
exit (1);
}
void S9xParseArg (char **argv, int &i, int argc)
{
if (strcasecmp (argv [i], "-b") == 0 ||
strcasecmp (argv [i], "-bs") == 0 ||
strcasecmp (argv [i], "-buffersize") == 0)
{
if (i + 1 < argc)
Settings.SoundBufferSize = atoi (argv [++i]);
else
S9xUsage ();
}
else if (strcmp (argv [i], "-l") == 0 ||
strcasecmp (argv [i], "-loadsnapshot") == 0)
{
if (i + 1 < argc)
snapshot_filename = argv [++i];
else
S9xUsage ();
}
else if (strcmp (argv [i], "-nso") == 0)
nso = TRUE;
else if (strcmp (argv [i], "-x2") == 0)
vga = TRUE;
else if (strcmp (argv [i], "-xs") == 0)
{
if (i + 1 < argc)
xs = atoi(argv [++i]);
else
S9xUsage ();
}
else if (strcmp (argv [i], "-ys") == 0)
{
if (i + 1 < argc)
ys = atoi(argv [++i]);
else
S9xUsage ();
}
else if (strcmp (argv [i], "-cl") == 0)
{
if (i + 1 < argc)
cl = atoi(argv [++i]);
else
S9xUsage ();
}
else if (strcmp (argv [i], "-cs") == 0)
{
if (i + 1 < argc)
cs = atoi(argv [++i]);
else
S9xUsage ();
}
else if (strcmp (argv [i], "-mfs") == 0)
{
if (i + 1 < argc)
mfs = atoi(argv [++i]);
else
S9xUsage ();
}
else
S9xUsage ();
// S9xParseDisplayArg (argv, i, argc);
}
static GKeyFile *gkeyfile=0;
static void open_config_file(void)
{
GError *error = NULL;
gkeyfile = g_key_file_new ();
if (!(int)g_key_file_load_from_file (gkeyfile, "snes9x.cfg", G_KEY_FILE_NONE, &error))
{
gkeyfile=0;
}
}
static void close_config_file(void)
{
g_key_file_free(gkeyfile);
}
static int get_integer_conf (char *section, char *option, int defval)
{
GError *error=NULL;
int tempint;
if(!gkeyfile) return defval;
tempint = g_key_file_get_integer(gkeyfile, section, option, &error);
if (!error)
return tempint;
else
return defval;
}
/*#include "cheats.h"*/
extern "C"
int main (int argc, char **argv)
{
if (argc < 2)
S9xUsage ();
char abspath[1000];
//Set the directory to where the binary is
realpath(argv[0], abspath);
char *dirsep = strrchr(abspath, '/');
if( dirsep != 0 ) *dirsep = 0;
chdir(abspath);
ZeroMemory (&Settings, sizeof (Settings));
Settings.JoystickEnabled = TRUE; // rPi changed default
Settings.SoundPlaybackRate = 7;
Settings.Stereo = TRUE;
Settings.SoundBufferSize = 512;
Settings.CyclesPercentage = 100;
Settings.DisableSoundEcho = FALSE;
Settings.APUEnabled = Settings.NextAPUEnabled = TRUE;
Settings.H_Max = SNES_CYCLES_PER_SCANLINE;
Settings.SkipFrames = AUTO_FRAMERATE;
Settings.ShutdownMaster = TRUE;
Settings.FrameTimePAL = 20000;
Settings.FrameTimeNTSC = 16667;
Settings.FrameTime = Settings.FrameTimeNTSC;
Settings.DisableSampleCaching = FALSE;
Settings.DisableMasterVolume = FALSE;
Settings.Mouse = FALSE;
Settings.SuperScope = FALSE;
Settings.MultiPlayer5 = FALSE;
// Settings.ControllerOption = SNES_MULTIPLAYER5;
Settings.ControllerOption = 0;
Settings.Transparency = TRUE;
Settings.SixteenBit = TRUE;
Settings.SupportHiRes = FALSE;
Settings.NetPlay = FALSE;
Settings.ServerName [0] = 0;
Settings.ThreadSound = TRUE;
Settings.AutoSaveDelay = 30;
Settings.ApplyCheats = TRUE;
Settings.TurboMode = FALSE;
Settings.TurboSkipFrames = 0;
Settings.DisplaySmoothStretch = 1;
Settings.MaintainAspectRatio = 1;
Settings.DisplayBorder = 0;
Settings.InterpolatedSound = 0;
Settings.DisplayEffect = 0;
//Override defaults from the config file
S9xParseConfigFile();
//Command line arguments override all others
rom_filename = S9xParseArgs (argv, argc);
// Settings.Transparency = Settings.ForceTransparency;
if (Settings.ForceNoTransparency)
Settings.Transparency = FALSE;
if (Settings.Transparency)
Settings.SixteenBit = TRUE;
Settings.HBlankStart = (256 * Settings.H_Max) / SNES_HCOUNTER_MAX;
if (!Memory.Init () || !S9xInitAPU())
OutOfMemory ();
(void) S9xInitSound (Settings.SoundPlaybackRate, Settings.Stereo,
Settings.SoundBufferSize);
if (!Settings.APUEnabled)
S9xSetSoundMute (TRUE);
uint32 saved_flags = CPU.Flags;
#ifdef GFX_MULTI_FORMAT
S9xSetRenderPixelFormat (RGB565);
#endif
S9xInitInputDevices ();
if (!S9xGraphicsInit ())
OutOfMemory ();
if (rom_filename)
{
if (!Memory.LoadROM (rom_filename))
{
char dir [_MAX_DIR + 1];
char drive [_MAX_DRIVE + 1];
char name [_MAX_FNAME + 1];
char ext [_MAX_EXT + 1];
char fname [_MAX_PATH + 1];
_splitpath (rom_filename, drive, dir, name, ext);
_makepath (fname, drive, dir, name, ext);
strcpy (fname, S9xGetROMDirectory ());
strcat (fname, SLASH_STR);
strcat (fname, name);
if (ext [0])
{
strcat (fname, ".");
strcat (fname, ext);
}
_splitpath (fname, drive, dir, name, ext);
_makepath (fname, drive, dir, name, ext);
if (!Memory.LoadROM (fname))
{
printf ("Error opening: %s\n", rom_filename);
exit (1);
}
}
Memory.LoadSRAM (S9xGetFilename (".srm"));
// S9xLoadCheatFile (S9xGetFilename (".cht"));
}
else
{
S9xReset ();
Settings.Paused |= 2;
}
CPU.Flags = saved_flags;
if (snapshot_filename)
{
int Flags = CPU.Flags & (DEBUG_MODE_FLAG | TRACE_FLAG);
if (!S9xLoadSnapshot (snapshot_filename))
exit (1);
CPU.Flags |= Flags;
}
S9xInitDisplay ( Settings.PAL ? 239:224);
if (nso) {
Settings.SoundBufferSize = 8192;
Settings.SoundPlaybackRate = 1;
Settings.DisableSoundEcho = TRUE;
Settings.DisableMasterVolume = TRUE;
Settings.Stereo = FALSE;
S9xSetSoundMute (TRUE);
} else {
if (!Settings.APUEnabled)
S9xSetSoundMute (FALSE);
else
InitTimer ();
}
while (1)
{
S9xMainLoop ();
}
return (0);
}
void S9xAutoSaveSRAM ()
{
Memory.SaveSRAM (S9xGetFilename (".srm"));
}
void S9xExit ()
{
S9xSetSoundMute (TRUE);
g_alsa->thread_running=0;
pthread_join(thread, NULL);
alsa_free(g_alsa);
S9xDeinitDisplay ();
Memory.SaveSRAM (S9xGetFilename (".srm"));
// S9xSaveCheatFile (S9xGetFilename (".cht"));
Memory.Deinit ();
S9xDeinitAPU ();
exit (0);
}
#define NUMKEYS 256
static Uint16 sfc_key[NUMKEYS];
static Uint16 sfc_joy[NUMKEYS];
void S9xInitInputDevices ()
{
memset(joy_buttons, 0, 32*2);
memset(joy_axes, 0, 8*2);
memset(sfc_key, 0, NUMKEYS*2);
memset(sfc_joy, 0, NUMKEYS*2);
//Open config file for reading below
open_config_file();
//Configure keys from config file or defaults
sfc_key[A_1] = get_integer_conf("Keyboard", "A_1", RPI_KEY_A);
sfc_key[B_1] = get_integer_conf("Keyboard", "B_1", RPI_KEY_B);
sfc_key[X_1] = get_integer_conf("Keyboard", "X_1", RPI_KEY_X);
sfc_key[Y_1] = get_integer_conf("Keyboard", "Y_1", RPI_KEY_Y);
sfc_key[L_1] = get_integer_conf("Keyboard", "L_1", RPI_KEY_L);
sfc_key[R_1] = get_integer_conf("Keyboard", "R_1", RPI_KEY_R);
sfc_key[START_1] = get_integer_conf("Keyboard", "START_1", RPI_KEY_START);
sfc_key[SELECT_1] = get_integer_conf("Keyboard", "SELECT_1", RPI_KEY_SELECT);
sfc_key[LEFT_1] = get_integer_conf("Keyboard", "LEFT_1", RPI_KEY_LEFT);
sfc_key[RIGHT_1] = get_integer_conf("Keyboard", "RIGHT_1", RPI_KEY_RIGHT);
sfc_key[UP_1] = get_integer_conf("Keyboard", "UP_1", RPI_KEY_UP);
sfc_key[DOWN_1] = get_integer_conf("Keyboard", "DOWN_1", RPI_KEY_DOWN);
sfc_key[QUIT] = get_integer_conf("Keyboard", "QUIT", RPI_KEY_QUIT);
sfc_key[ACCEL] = get_integer_conf("Keyboard", "ACCEL", RPI_KEY_ACCEL);
/* sfc_key[LEFT_2] = SDLK_4;
sfc_key[RIGHT_2] = SDLK_6;
sfc_key[UP_2] = SDLK_8;
sfc_key[DOWN_2] = SDLK_2;
sfc_key[LU_2] = SDLK_7;
sfc_key[LD_2] = SDLK_1;
sfc_key[RU_2] = SDLK_9;
sfc_key[RD_2] = SDLK_3; */
//Configure joysticks from config file or defaults
sfc_joy[JB_UP] = get_integer_conf("Joystick", "JB_UP", RPI_JOY_UP);
sfc_joy[JB_DOWN] = get_integer_conf("Joystick", "JB_DOWN", RPI_JOY_DOWN);
sfc_joy[JB_LEFT] = get_integer_conf("Joystick", "JB_LEFT", RPI_JOY_LEFT);
sfc_joy[JB_RIGHT] = get_integer_conf("Joystick", "JB_RIGHT", RPI_JOY_RIGHT);
sfc_joy[A_1] = get_integer_conf("Joystick", "A_1", RPI_JOY_A);
sfc_joy[B_1] = get_integer_conf("Joystick", "B_1", RPI_JOY_B);
sfc_joy[X_1] = get_integer_conf("Joystick", "X_1", RPI_JOY_X);
sfc_joy[Y_1] = get_integer_conf("Joystick", "Y_1", RPI_JOY_Y);
sfc_joy[L_1] = get_integer_conf("Joystick", "L_1", RPI_JOY_L);
sfc_joy[R_1] = get_integer_conf("Joystick", "R_1", RPI_JOY_R);
sfc_joy[START_1] = get_integer_conf("Joystick", "START_1", RPI_JOY_START);
sfc_joy[SELECT_1] = get_integer_conf("Joystick", "SELECT_1", RPI_JOY_SELECT);
sfc_joy[QUIT] = get_integer_conf("Joystick", "QUIT", RPI_JOY_QUIT);
sfc_joy[ACCEL] = get_integer_conf("Joystick", "ACCEL", RPI_JOY_ACCEL);
sfc_joy[QLOAD] = get_integer_conf("Joystick", "QLOAD", RPI_JOY_QLOAD);
sfc_joy[QSAVE] = get_integer_conf("Joystick", "QSAVE", RPI_JOY_QSAVE);
//Read joystick axis to use, default to 0 & 1
joyaxis_LR = get_integer_conf("Joystick", "JA_LR", 0);
joyaxis_UD = get_integer_conf("Joystick", "JA_UD", 1);
close_config_file();
}
const char *GetHomeDirectory ()
{
return (getenv ("HOME"));
}
const char *S9xGetSnapshotDirectory ()
{
static char filename [PATH_MAX];
const char *snapshot;
if (!(snapshot = getenv ("SNES9X_SNAPSHOT_DIR")) &&
!(snapshot = getenv ("SNES96_SNAPSHOT_DIR")))
{
const char *home = GetHomeDirectory ();
strcpy (filename, home);
strcat (filename, SLASH_STR);
strcat (filename, ".snes96_snapshots");
mkdir (filename, 0777);
chown (filename, getuid (), getgid ());
}
else
return (snapshot);
return (filename);
}
const char *S9xGetFilename (const char *ex)
{
static char filename [PATH_MAX + 1];
char drive [_MAX_DRIVE + 1];
char dir [_MAX_DIR + 1];
char fname [_MAX_FNAME + 1];
char ext [_MAX_EXT + 1];
_splitpath (Memory.ROMFilename, drive, dir, fname, ext);
strcpy (filename, S9xGetSnapshotDirectory ());
strcat (filename, SLASH_STR);
strcat (filename, fname);
strcat (filename, ex);
return (filename);
}
const char *S9xGetROMDirectory ()
{
const char *roms;
if (!(roms = getenv ("SNES9X_ROM_DIR")) &&
!(roms = getenv ("SNES96_ROM_DIR")))
return ("." SLASH_STR "roms");
else
return (roms);
}
const char *S9xBasename (const char *f)
{
const char *p;
if ((p = strrchr (f, '/')) != NULL || (p = strrchr (f, '\\')) != NULL)
return (p + 1);
return (f);
}
bool8 S9xOpenSnapshotFile (const char *fname, bool8 read_only, STREAM *file)
{
char filename [PATH_MAX + 1];
char drive [_MAX_DRIVE + 1];
char dir [_MAX_DIR + 1];
char ext [_MAX_EXT + 1];
_splitpath (fname, drive, dir, filename, ext);
if (*drive || *dir == '/' ||
(*dir == '.' && (*(dir + 1) == '/'
)))
{
strcpy (filename, fname);
if (!*ext)
strcat (filename, ".s96");
}
else
{
strcpy (filename, S9xGetSnapshotDirectory ());
strcat (filename, SLASH_STR);
strcat (filename, fname);
if (!*ext)
strcat (filename, ".s96");
}
#ifdef ZLIB
if (read_only)
{
if ((*file = OPEN_STREAM (filename, "rb")))
return (TRUE);
}
else
{
if ((*file = OPEN_STREAM (filename, "wb")))
{
chown (filename, getuid (), getgid ());
return (TRUE);
}
}
#else
char command [PATH_MAX];
if (read_only)
{
sprintf (command, "gzip -d <\"%s\"", filename);
if (*file = popen (command, "r"))
return (TRUE);
}
else
{
sprintf (command, "gzip --best >\"%s\"", filename);
if (*file = popen (command, "wb"))
return (TRUE);
}
#endif
return (FALSE);
}
void S9xCloseSnapshotFile (STREAM file)
{
#ifdef ZLIB
CLOSE_STREAM (file);
#else
pclose (file);
#endif
}
bool8_32 S9xDeinitUpdate (int Width, int Height)
{
register uint32 lp = (xs > 256) ? 16 : 0;
if (Width > 256 || vga)
lp *= 2;
if (Settings.SupportHiRes) {
if (Width > 256) {
for (register uint32 i = 0; i < Height; i++) {
register uint16 *dp16 = (uint16 *)(screen) + ((i + cl) * xs) + lp;
register uint32 *sp32 = (uint32 *)(GFX.Screen) + (i << 8) + cs;
for (register uint32 j = 0; j < 256; j++) {
*dp16++ = *sp32++;
}
}
} else {
for (register uint32 i = 0; i < Height; i++) {
register uint32 *dp32 = (uint32 *)(screen) + ((i + cl) * xs / 2) + lp;
register uint32 *sp32 = (uint32 *)(GFX.Screen) + (i << 8) + cs;
for (register uint32 j = 0; j < 128; j++) {
*dp32++ = *sp32++;
}
}
}
}
if (Settings.DisplayFrameRate)
S9xDisplayFrameRate ((uint8 *)screen, 512);
if (GFX.InfoString)
S9xDisplayString (GFX.InfoString, (uint8 *)screen, 512);
//Draw to the screen
gles2_draw(screen, 256, Height);
eglSwapBuffers(display, surface);
return(TRUE);
}
void _makepath (char *path, const char *, const char *dir,
const char *fname, const char *ext)
{
if (dir && *dir)
{
strcpy (path, dir);
strcat (path, "/");
}
else
*path = 0;
strcat (path, fname);
if (ext && *ext)
{
strcat (path, ".");
strcat (path, ext);
}
}
void _splitpath (const char *path, char *drive, char *dir, char *fname,
char *ext)
{
*drive = 0;
char *slash = strrchr (path, '/');
if (!slash)
slash = strrchr (path, '\\');
char *dot = strrchr (path, '.');
if (dot && slash && dot < slash)
dot = NULL;
if (!slash)
{
strcpy (dir, "");
strcpy (fname, path);
if (dot)
{
*(fname + (dot - path)) = 0;
strcpy (ext, dot + 1);
}
else
strcpy (ext, "");
}
else
{
strcpy (dir, path);
*(dir + (slash - path)) = 0;
strcpy (fname, slash + 1);
if (dot)
{
*(fname + (dot - slash) - 1) = 0;
strcpy (ext, dot + 1);
}
else
strcpy (ext, "");
}
}
static void SoundTrigger ()
{
}
void StopTimer ()
{
}
void InitTimer ()
{
//Open sound device and start ALSA sound thread
g_alsa = alsa_init();
g_alsa->thread_running = 1;
pthread_create (&thread, NULL, S9xProcessSound, NULL);
if(!thread)
{
printf("error initializing ALSA thread\n");
exit(1);
}
}
unsigned long getticker()
{
struct timespec now;
clock_gettime(CLOCK_MONOTONIC_RAW, &now);
return ((unsigned long long)now.tv_sec * 1000000LL + (now.tv_nsec / 1000LL));
}
void S9xSyncSpeed ()
{
S9xProcessEvents (FALSE);
if (Settings.TurboMode)
{
if ((++IPPU.FrameSkip >= Settings.TurboSkipFrames) )
{
IPPU.FrameSkip = 0;
IPPU.SkippedFrames = 0;
IPPU.RenderThisFrame = TRUE;
}
else
{
IPPU.SkippedFrames++;
IPPU.RenderThisFrame = FALSE;
}
return;
}
static struct timeval next1 = { 0, 0 };
struct timeval now;
while (gettimeofday(&now, NULL) == -1) ;
// If there is no known "next" frame, initialize it now.
if (next1.tv_sec == 0)
{
next1 = now;
next1.tv_usec++;
}
// If we're on AUTO_FRAMERATE, we'll display frames always only if there's excess time.
// Otherwise we'll display the defined amount of frames.
unsigned limit = (Settings.SkipFrames == AUTO_FRAMERATE) ? (timercmp(&next1, &now, <) ? 10 : 1) : Settings.SkipFrames;
IPPU.RenderThisFrame = (++IPPU.SkippedFrames >= limit) ? TRUE : FALSE;
if (IPPU.RenderThisFrame)
IPPU.SkippedFrames = 0;
else
{
// If we were behind the schedule, check how much it is.
if (timercmp(&next1, &now, <))
{
unsigned lag = (now.tv_sec - next1.tv_sec) * 1000000 + now.tv_usec - next1.tv_usec;
if (lag >= 500000)
{
// More than a half-second behind means probably pause.
// The next line prevents the magic fast-forward effect.
next1 = now;
}
}
}
//This isn't required now as the vsync is in effect for GLES2
// Delay until we're completed this frame.
// Can't use setitimer because the sound code already could be using it. We don't actually need it either.
while (timercmp(&next1, &now, >))
{
// If we're ahead of time, sleep a while.
while (gettimeofday(&now, NULL) == -1) ;
// Continue with a while-loop because usleep() could be interrupted by a signal.
}
// Calculate the timestamp of the next frame.
next1.tv_usec += Settings.FrameTime;
if (next1.tv_usec >= 1000000)
{
next1.tv_sec += next1.tv_usec / 1000000;
next1.tv_usec %= 1000000;
}
}
void S9xProcessEvents (bool8_32 block)
{
uint32 num = 0;
static bool8_32 TURBO = FALSE;
SDL_Event event;
while(SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_JOYBUTTONDOWN:
joy_buttons[event.jbutton.which][event.jbutton.button] = 1;
break;
case SDL_JOYBUTTONUP:
joy_buttons[event.jbutton.which][event.jbutton.button] = 0;
break;
case SDL_JOYAXISMOTION:
if(event.jaxis.axis == joyaxis_LR) {
if(event.jaxis.value > -10000 && event.jaxis.value < 10000)
joy_axes[event.jbutton.which][joyaxis_LR] = CENTER;
else if(event.jaxis.value > 10000)
joy_axes[event.jbutton.which][joyaxis_LR] = RIGHT;
else
joy_axes[event.jbutton.which][joyaxis_LR] = LEFT;
}
if(event.jaxis.axis == joyaxis_UD) {
if(event.jaxis.value > -10000 && event.jaxis.value < 10000)
joy_axes[event.jbutton.which][joyaxis_UD] = CENTER;
else if(event.jaxis.value > 10000)
joy_axes[event.jbutton.which][joyaxis_UD] = DOWN;
else
joy_axes[event.jbutton.which][joyaxis_UD] = UP;
}
break;
case SDL_KEYDOWN:
keyssnes = SDL_GetKeyState(NULL);
if (event.key.keysym.sym == SDLK_0)
Settings.DisplayFrameRate = !Settings.DisplayFrameRate;
/* else if (event.key.keysym.sym == SDLK_1) PPU.BG_Forced ^= 1;
else if (event.key.keysym.sym == SDLK_2) PPU.BG_Forced ^= 2;
else if (event.key.keysym.sym == SDLK_3) PPU.BG_Forced ^= 4;
else if (event.key.keysym.sym == SDLK_4) PPU.BG_Forced ^= 8;
else if (event.key.keysym.sym == SDLK_5) PPU.BG_Forced ^= 16; */
else if (event.key.keysym.sym == SDLK_F1) num = 1;
else if (event.key.keysym.sym == SDLK_F2) num = 2;
else if (event.key.keysym.sym == SDLK_F3) num = 3;
else if (event.key.keysym.sym == SDLK_F4) num = 4;
else if (event.key.keysym.sym == SDLK_r) {
if (event.key.keysym.mod & KMOD_SHIFT)
S9xReset();
}
if (num) {
char fname[256], ext[8];
sprintf(ext, ".00%d", num - 1);
strcpy(fname, S9xGetFilename (ext));
if (event.key.keysym.mod & KMOD_SHIFT)
S9xFreezeGame (fname);
else
S9xLoadSnapshot (fname);
}
break;
case SDL_KEYUP:
keyssnes = SDL_GetKeyState(NULL);
break;
}
if (keyssnes[sfc_key[ACCEL]] == SDL_PRESSED) {
if (!TURBO) {
TURBO = TRUE;
OldSkipFrame = Settings.SkipFrames;
Settings.SkipFrames = 10;
}
} else {
if (TURBO) {
TURBO = FALSE;
Settings.SkipFrames = OldSkipFrame;
}
}
}
//Check START+R,L for quicksave/quickload. Needs to go here outside of the internal processing
if (joy_buttons[0][sfc_joy[QLOAD]] || (joy_buttons[0][sfc_joy[SELECT_1]] && joy_buttons[0][sfc_joy[L_1]] )) {
char fname[256];
strcpy(fname, S9xGetFilename (".000"));
S9xLoadSnapshot (fname);
}
if (joy_buttons[0][sfc_joy[QSAVE]] || (joy_buttons[0][sfc_joy[SELECT_1]] && joy_buttons[0][sfc_joy[R_1]] )) {
char fname[256];
strcpy(fname, S9xGetFilename (".000"));
S9xFreezeGame (fname);
}
}
static long log2 (long num)
{
long n = 0;
while (num >>= 1)
n++;
return (n);
}
static int Rates[8] =
{
0, 8192, 11025, 16000, 22050, 29300, 32000, 44100
};
static int BufferSizes [8] =
{
//sq 0, 256, 256, 256, 512, 512, 1024, 1024
0, 256, 256, 256, 512, 512, 532, 256
};
bool8_32 S9xOpenSoundDevice (int mode, bool8_32 stereo, int buffer_size)
{
int J, K;
so.sixteen_bit = TRUE;
so.stereo = stereo;
so.playback_rate = Rates[mode & 0x07];
S9xSetPlaybackRate (so.playback_rate);
so.buffer_size = BufferSizes [mode & 7];
so.buffer_size *= 2; //16bit sound
if (so.stereo)
so.buffer_size *= 2;
if (so.buffer_size > MAX_BUFFER_SIZE / 4)
so.buffer_size = MAX_BUFFER_SIZE / 4;
//sq printf ("Rate: %d, Buffer size: %d, 16-bit: %s, Stereo: %s, Encoded: %s\n",
//sq so.playback_rate, so.buffer_size, so.sixteen_bit ? "yes" : "no",
//sq so.stereo ? "yes" : "no", so.encoded ? "yes" : "no");
return (TRUE);
}
void S9xUnixProcessSound (void)
{
}
void *S9xProcessSound (void *)
{
snd_pcm_sframes_t err;
while (g_alsa->thread_running)
{
S9xMixSamplesO ((uint8*) g_alsa->audioBuffer, so.buffer_size, 0);
err = snd_pcm_writei(g_alsa->pcm,
g_alsa->audioBuffer,
so.buffer_size/2);
if (err == -EPIPE || err == -EINTR || err == -ESTRPIPE)
{
snd_underrun++;
//sq printf("snd_underrun %d\n", snd_underrun);