mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-05 02:15:07 +01:00
updated SDL/DOS port
This commit is contained in:
ekeeke31
parent
fb9c8eeb19
commit
201c5eb922
@ -76,7 +76,7 @@ void set_option_defaults(void)
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option.video_height = 480;
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option.video_depth = 16;
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option.remap = 1;
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option.remap = 0;
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option.scanlines = 0;
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option.scale = 0;
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@ -75,10 +75,9 @@ int main (int argc, char *argv[])
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return (0);
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}
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/* load BIOS */
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memset(bios_rom, 0, sizeof(bios_rom));
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f = fopen("./BIOS.bin", "rb");
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FILE *f = fopen("./BIOS.bin", "rb");
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if (f!=NULL)
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{
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fread(&bios_rom, 0x800,1,f);
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@ -90,7 +89,7 @@ int main (int argc, char *argv[])
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bios_rom[i] = bios_rom[i+1];
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bios_rom[i+1] = temp;
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}
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config.bios_enabled = 3;
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config.bios_enabled |= 2;
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}
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else config.bios_enabled = 0;
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@ -103,11 +102,6 @@ int main (int argc, char *argv[])
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input.system[1] = SYSTEM_GAMEPAD;
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/* initialize emulation */
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int buf_len = (option.sndrate * 4) / vdp_rate;
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snd.buffer[0] = malloc (buf_len/2);
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snd.buffer[1] = malloc (buf_len/2);
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memset (snd.buffer[0], 0, buf_len/2);
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memset (snd.buffer[1], 0, buf_len/2);
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system_init();
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audio_init(option.sndrate);
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@ -118,7 +112,7 @@ int main (int argc, char *argv[])
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fclose(f);
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}
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/* reset emulation */
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system_reset();
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/* emulation loop */
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@ -137,8 +131,6 @@ int main (int argc, char *argv[])
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system_frame(1);
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}
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if(option.sound) dos_update_audio();
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//error("%d\n", frame_rate);
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}
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f = fopen("./game.srm", "wb");
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@ -151,6 +143,8 @@ int main (int argc, char *argv[])
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trash_machine();
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system_shutdown();
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error_shutdown();
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free(cart_rom);
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return (0);
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}
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@ -279,10 +273,8 @@ void dos_update_input(void)
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if(key[KEY_X]) input.pad[joynum] |= INPUT_Y;
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if(key[KEY_C]) input.pad[joynum] |= INPUT_Z;
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if(key[KEY_V]) input.pad[joynum] |= INPUT_MODE;
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if(key[KEY_F]) input.pad[joynum] |= INPUT_START;
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extern uint8 pico_current;
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if (input.dev[joynum] == DEVICE_LIGHTGUN)
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{
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@ -387,10 +379,7 @@ void dos_update_input(void)
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bitmap.viewport.changed = 1;
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}
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if(check_key(KEY_F10))
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system_reset();
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if(check_key(KEY_F10)) system_reset();
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if(check_key(KEY_TAB)) set_softreset();
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}
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@ -400,7 +389,8 @@ void dos_update_audio(void)
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osd_play_streamed_sample_16(option.swap ^ 1, snd.buffer[1], snd.buffer_size * 2, option.sndrate, FRAMES_PER_SECOND, 100);
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}
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/*void dos_update_palette(void)
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#if 0
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void dos_update_palette(void)
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{
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if(is_border_dirty)
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{
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@ -458,7 +448,8 @@ void dos_update_audio(void)
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}
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}
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}
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}*/
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}
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#endif
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void dos_update_video(void)
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{
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@ -483,11 +474,12 @@ void dos_update_video(void)
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}
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}
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/*if(bitmap.remap == 0)
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#if 0
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if(bitmap.remap == 0)
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{
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dos_update_palette();
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}*/
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}
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#endif
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msg_print(2, 2, "offset = 0x%x", hc_latch/*frame_rate*/);
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@ -501,10 +493,7 @@ void dos_update_video(void)
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}
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else
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{
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//blit(gen_bmp, screen, 0x0, 0, center_x, center_y, width, height);
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stretch_blit(gen_bmp, screen, 0, 0, width, height, (SCREEN_W-352)/2, (SCREEN_H-240)/2, 352,240 << (interlaced ? 1:0));
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}
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}
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@ -1,3 +1,3 @@
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COmpile with DJGPP.
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Compile with DJGPP.
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You will also need to install Allegro and Seal libraries.
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Zlib is required for zipped rom support.
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@ -3,6 +3,8 @@
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#include <SDL.h>
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#include "shared.h"
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#define SOUND_FREQUENCY 48000
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int timer_count = 0;
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int old_timer_count = 0;
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int paused = 0;
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@ -14,10 +16,36 @@ int update_input(void);
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unsigned char *keystate;
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unsigned char buf[0x24000];
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uint8 log_error = 0;
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SDL_AudioSpec audio;
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static uint8 soundbuffer[2][3840];
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static uint8 mixbuffer[16000];
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static int mixhead = 0;
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static int mixtail = 0;
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static int whichab = 0;
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uint8 log_error = 1;
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uint8 debug_on = 0;
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uint8 turbo_mode = 0;
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static int mixercollect( uint8 *outbuffer, int len )
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{
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uint32 *dst = (uint32 *)outbuffer;
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uint32 *src = (uint32 *)mixbuffer;
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int done = 0;
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/*** Always clear output buffer ***/
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memset(outbuffer, 0, len);
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while ( ( mixtail != mixhead ) && ( done < len ) )
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{
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*dst++ = src[mixtail++];
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if (mixtail == 4000) mixtail = 0;
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done += 4;
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}
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return done;
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}
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Uint32 fps_callback(Uint32 interval)
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{
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if(paused) return 1000/vdp_rate;
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@ -39,6 +67,48 @@ Uint32 fps_callback(Uint32 interval)
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return 1000/vdp_rate;
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}
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static void sdl_sound_callback(void *userdata, Uint8 *stream, int len)
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{
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int actuallen = mixercollect( soundbuffer[whichab], len );
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memcpy(stream, soundbuffer[whichab], len);
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whichab ^= 1;
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}
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int sdl_sound_init()
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{
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SDL_InitSubSystem(SDL_INIT_AUDIO);
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SDL_AudioSpec as;
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as.freq = SOUND_FREQUENCY;
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as.format = AUDIO_S16;
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as.channels = 2;
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as.samples = SOUND_FREQUENCY/vdp_rate;
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as.callback = sdl_sound_callback;
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if(SDL_OpenAudio(&as, 0) == -1) {
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char caption[256];
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sprintf(caption, "can't open audio");
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MessageBox(NULL, caption, "Error", 0);
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return 0;
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}
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return 1;
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}
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static void sdl_sound_update()
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{
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int i;
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// SDL_LockAudio();
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uint32 *dst = (uint32 *)mixbuffer;
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for(i = 0; i < snd.buffer_size; ++i)
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{
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dst[mixhead++] = (snd.buffer[0][i] << 16) | snd.buffer[1][i];
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if (mixhead == 4000) mixhead = 0;
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}
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// SDL_UnlockAudio();
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}
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int main (int argc, char **argv)
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{
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@ -85,32 +155,36 @@ int main (int argc, char **argv)
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bios_rom[i] = bios_rom[i+1];
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bios_rom[i+1] = temp;
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}
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config.bios_enabled = 3;
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config.bios_enabled |= 2;
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}
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else config.bios_enabled = 0;
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/* initialize SDL */
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viewport.x = 0;
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viewport.y = 0;
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viewport.w = 640;
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viewport.h = 480;
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src.x = 0;
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src.y = 0;
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src.w = viewport.w;
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src.h = viewport.h;
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if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0)
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{
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char caption[256];
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sprintf(caption, "SDL initialization failed");
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MessageBox(NULL, caption, "Error", 0);
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exit(1);
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}
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SDL_WM_SetCaption("Genesis Plus/SDL", NULL);
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screen = SDL_SetVideoMode(viewport.w, viewport.h, 16, SDL_HWSURFACE);
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viewport.x = 0;
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viewport.y = 0;
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SDL_ShowCursor(0);
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/* initialize SDL video */
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viewport.w = 640;
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viewport.h = 480;
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screen = SDL_SetVideoMode(viewport.w, viewport.h, 16, SDL_ANYFORMAT | SDL_HWPALETTE | SDL_HWSURFACE/* | SDL_FULLSCREEN*/);
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bmp = SDL_CreateRGBSurface(SDL_SWSURFACE, 360, 576, 16, 0xF800, 0x07E0, 0x001F, 0x0000);
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if (!bmp || !screen)
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{
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char caption[256];
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sprintf(caption, "Video initialization failed");
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MessageBox(NULL, caption, "Error", 0);
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exit(1);
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}
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/* initialize Genesis screen */
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/* initialize Genesis display */
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memset(&bitmap, 0, sizeof(t_bitmap));
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bitmap.width = 360;
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bitmap.height = 576;
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@ -124,19 +198,17 @@ int main (int argc, char **argv)
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bitmap.viewport.y = 0;
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bitmap.remap = 1;
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/* default config */
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/* set default config */
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set_config_defaults();
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input.system[0] = SYSTEM_GAMEPAD;
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input.system[1] = SYSTEM_GAMEPAD;
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/* initialize emulation */
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system_init();
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int buf_len = (48000 * 4) / vdp_rate;
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snd.buffer[0] = malloc (buf_len/2);
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snd.buffer[1] = malloc (buf_len/2);
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memset (snd.buffer[0], 0, buf_len/2);
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memset (snd.buffer[1], 0, buf_len/2);
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audio_init(48000);
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audio_init(SOUND_FREQUENCY);
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/* initialize SDL audio */
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//sdl_sound_init();
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/* load SRAM */
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f = fopen("./game.srm", "rb");
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@ -149,11 +221,9 @@ int main (int argc, char **argv)
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/* reset emulation */
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system_reset();
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/* emulation loop */
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/* start emulation loop */
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SDL_SetTimer(1000/vdp_rate, fps_callback);
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SDL_ShowCursor(0);
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int now, prev = SDL_GetTicks();
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//SDL_PauseAudio(1);
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while(running)
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{
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@ -169,6 +239,7 @@ int main (int argc, char **argv)
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if(event.active.state & (SDL_APPINPUTFOCUS | SDL_APPACTIVE))
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{
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paused = !event.active.gain;
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//SDL_PauseAudio(paused);
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}
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break;
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@ -176,8 +247,8 @@ int main (int argc, char **argv)
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sym = event.key.keysym.sym;
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if(sym == SDLK_TAB) system_reset();
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if(sym == SDLK_F5) log_error ^=1;
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if(sym == SDLK_F6)
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else if(sym == SDLK_F5) log_error ^=1;
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else if(sym == SDLK_F6)
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{
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turbo_mode ^=1;
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frameticker = 0;
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@ -208,7 +279,7 @@ int main (int argc, char **argv)
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/* reinitialize timings */
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system_init ();
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audio_init(48000);
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audio_init(audio.freq);
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fm_restore();
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/* reinitialize HVC tables */
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@ -257,7 +328,7 @@ int main (int argc, char **argv)
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else
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{
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/* Delay */
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while (!frameticker && !turbo_mode) SDL_Delay(1);
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while (!frameticker && !turbo_mode) SDL_Delay(0);
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system_frame (0);
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frame_count++;
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@ -269,14 +340,14 @@ int main (int argc, char **argv)
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{
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bitmap.viewport.changed = 0;
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src.w = (bitmap.viewport.w + 2 * bitmap.viewport.x);
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src.h = (bitmap.viewport.w + 2*bitmap.viewport.x) << ((config.render && interlaced) ? 1:0);
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src.h = (bitmap.viewport.h + 2 * bitmap.viewport.y) << ((config.render && interlaced) ? 1:0);
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viewport.w = bitmap.viewport.w + 2*bitmap.viewport.x;
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viewport.h = bitmap.viewport.h + 2*bitmap.viewport.y;
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viewport.x = (640 - viewport.w)/2;
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viewport.y = ((480 - viewport.h)/2);
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}
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sdl_sound_update();
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SDL_BlitSurface(bmp, &src, screen, &viewport);
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//SDL_Flip(screen);
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SDL_UpdateRect(screen, viewport.x, viewport.y, viewport.w, viewport.h);
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@ -284,10 +355,13 @@ int main (int argc, char **argv)
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}
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system_shutdown();
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SDL_PauseAudio(1);
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SDL_CloseAudio();
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SDL_FreeSurface(bmp);
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SDL_FreeSurface(screen);
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SDL_Quit();
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error_shutdown();
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free(cart_rom);
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return 0;
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}
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@ -297,7 +371,7 @@ int update_input(void)
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keystate = SDL_GetKeyState(NULL);
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while (input.dev[joynum] == NO_DEVICE)
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{
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{
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joynum ++;
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if (joynum > MAX_DEVICES - 1) joynum = 0;
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}
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@ -339,7 +413,7 @@ int update_input(void)
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if(state & SDL_BUTTON_LMASK) input.pad[joynum] |= INPUT_A;
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}
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else if (input.dev[joynum] == DEVICE_MOUSE)
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{
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{
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/* get mouse (relative values) */
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int x,y;
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int state = SDL_GetRelativeMouseState(&x,&y);
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