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69e30b219a2f3a7bb48f80d00f59a1a9116cf503
libretro-atari800/libretro/platform.c
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R-type 69e30b219a add basic libretro file wip
2015-12-15 01:01:43 +01:00

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/*
* platform.c - platform interface implementation for libretro
*
* Copyright (C) 2010 Atari800 development team (see DOC/CREDITS)
*
* This file is part of the Atari800 emulator project which emulates
* the Atari 400, 800, 800XL, 130XE, and 5200 8-bit computers.
*
* Atari800 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.
*
* Atari800 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 Atari800; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Atari800 includes */
#include "atari.h"
#include "input.h"
#include "log.h"
#include "monitor.h"
#include "platform.h"
#include "sound.h"
#include "videomode.h"
#include "cpu.h"
#include "devices.h"
#include "akey.h"
#include "pokeysnd.h"
#include "sound.h"
#include "screen.h"
#include "colours.h"
extern char Key_Sate[512];
#include "libretro-core.h"
#include "libretro.h"
#include "retroscreen.h"
extern int UI_is_active;
static int swap_joysticks = FALSE;
int PLATFORM_kbd_joy_0_enabled = TRUE; /* enabled by default, doesn't hurt */
int PLATFORM_kbd_joy_1_enabled = FALSE; /* disabled, would steal normal keys */
extern unsigned char MXjoy[2]; // joy
extern int retro_sound_finalized;
static UWORD *palette = NULL;
int skel_main(int argc, char **argv)
{
/* initialise Atari800 core */
if (!Atari800_Initialise(&argc, argv)){
printf("Failed to initialise!\n");
return 3;
}
retro_sound_finalized=1;
printf("First retrun to main thread!\n");
co_switch(mainThread);
/* main loop */
for (;;) {
INPUT_key_code = PLATFORM_Keyboard();
//SDL_INPUT_Mouse();
Atari800_Frame();
if (Atari800_display_screen)
PLATFORM_DisplayScreen();
}
}
int PLATFORM_Initialise(int *argc, char *argv[])
{
Log_print("Core init");
retro_InitGraphics();
Devices_enable_h_patch = FALSE;
INPUT_direct_mouse = TRUE;
return TRUE;
}
int PLATFORM_Exit(int run_monitor)
{
if (CPU_cim_encountered) {
Log_print("CIM encountered");
return TRUE;
}
Log_print("Core_exit");
retro_ExitGraphics();
return FALSE;
}
int PLATFORM_Keyboard(void)
{
/* OPTION / SELECT / START keys */
INPUT_key_consol = INPUT_CONSOL_NONE;
if (Key_Sate[RETROK_F2])
INPUT_key_consol &= (~INPUT_CONSOL_OPTION);
if (Key_Sate[RETROK_F3])
INPUT_key_consol &= (~INPUT_CONSOL_SELECT);
if (Key_Sate[RETROK_F4])
INPUT_key_consol &= (~INPUT_CONSOL_START);
if (Key_Sate[RETROK_SPACE])
return AKEY_SPACE;
if (Key_Sate[RETROK_F1])
return AKEY_UI;
if (Key_Sate[RETROK_LEFT])return AKEY_LEFT;
if (Key_Sate[RETROK_RIGHT])return AKEY_RIGHT;
if (Key_Sate[RETROK_UP])return AKEY_UP;
if (Key_Sate[RETROK_DOWN])return AKEY_DOWN;
if (Key_Sate[RETROK_RETURN])return AKEY_RETURN;
if (Key_Sate[RETROK_ESCAPE])return AKEY_ESCAPE;
/*
if (UI_is_active){
printf("ui....\n");
if (MXjoy[0]&0x04)
return AKEY_LEFT;
if (MXjoy[0]&0x08)
return AKEY_RIGHT;
if (MXjoy[0]&0x01)
return AKEY_UP;
if (MXjoy[0]&0x02)
return AKEY_DOWN;
if (MXjoy[0]&0x80)
return AKEY_RETURN;
if (MXjoy[0]&0x40)
return AKEY_ESCAPE;
}
*/
return AKEY_NONE;
}
/*
int PLATFORM_GetRawKey(void)
{
input_poll_cb();
for(i=0;i<320;i++)
Key_Sate[i]=input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0,i) ? 0x80: 0;
}
*/
void PLATFORM_DisplayScreen(void)
{
retro_Render();
}
double PLATFORM_Time(void)
{
return GetTicks()/1000 ;//* 1e-3;
}
void PLATFORM_PaletteUpdate(void)
{
retro_PaletteUpdate();
}
static void get_platform_PORT(unsigned char *s0, unsigned char *s1)
{
int stick0, stick1;
stick0 = stick1 = INPUT_STICK_CENTRE;
if (PLATFORM_kbd_joy_0_enabled) {
if (MXjoy[0]&0x04)
stick0 &= INPUT_STICK_LEFT;
if (MXjoy[0]&0x08)
stick0 &= INPUT_STICK_RIGHT;
if (MXjoy[0]&0x01)
stick0 &= INPUT_STICK_FORWARD;
if (MXjoy[0]&0x02)
stick0 &= INPUT_STICK_BACK;
}
if (PLATFORM_kbd_joy_1_enabled) {
if (MXjoy[1]&0x04)
stick1 &= INPUT_STICK_LEFT;
if (MXjoy[1]&0x08)
stick1 &= INPUT_STICK_RIGHT;
if (MXjoy[1]&0x01)
stick1 &= INPUT_STICK_FORWARD;
if (MXjoy[1]&0x02)
stick1 &= INPUT_STICK_BACK;
}
if (swap_joysticks) {
*s1 = stick0;
*s0 = stick1;
}
else {
*s0 = stick0;
*s1 = stick1;
}
}
static void get_platform_TRIG(unsigned char *t0, unsigned char *t1)
{
int trig0, trig1;
trig0 = trig1 = 1;
if (PLATFORM_kbd_joy_0_enabled) {
//trig0 = !MXjoy[0]&0x80;
trig0 = MXjoy[0]&0x80?0:1;
}
if (PLATFORM_kbd_joy_1_enabled) {
//trig1 = !MXjoy[1]&0x80;
trig1 = MXjoy[1]&0x80?0:1;
}
if (swap_joysticks) {
*t1 = trig0;
*t0 = trig1;
}
else {
*t0 = trig0;
*t1 = trig1;
}
}
int PLATFORM_PORT(int num)
{
if (num == 0) {
UBYTE a, b;
//update_SDL_joysticks();
//printf("ffff %d\n",MXjoy[0]) ;
get_platform_PORT(&a, &b);
return (b << 4) | (a & 0x0f);
}
return 0xff;//(Android_PortStatus >> (num << 3)) & 0xFF;
}
int PLATFORM_TRIG(int num)
{
UBYTE a, b;
get_platform_TRIG(&a, &b);
//printf("ffff 0x%x: %d %d\n",MXjoy[0],a,b) ;
switch (num) {
case 0:
return a;
case 1:
return b;
default:
break;
}
return 0x01;//(Android_TrigStatus >> num) & 0x1;
}
/////////////////////////////////////////////////////////////
// SOUND
/////////////////////////////////////////////////////////////
int PLATFORM_SoundSetup(Sound_setup_t *setup)
{
//force 16 bit stereo sound at 44100
setup->freq=44100;
setup->sample_size=2;
setup->channels=2;
setup->buffer_ms=20;
return TRUE;
}
void PLATFORM_SoundExit(void)
{
}
void PLATFORM_SoundPause(void)
{
}
void PLATFORM_SoundContinue(void)
{
}
void PLATFORM_SoundLock(void)
{
}
void PLATFORM_SoundUnlock(void)
{
}
/////////////////////////////////////////////////////////////
// VIDEO
/////////////////////////////////////////////////////////////
void retro_PaletteUpdate(void)
{
int i;
if (!palette) {
if ( !(palette = malloc(256 * sizeof(UWORD))) ) {
Log_print("Cannot allocate memory for palette conversion.");
return;
}
}
memset(palette, 0, 256 * sizeof(UWORD));
for (i = 0; i < 256; i++){
palette[i] = ((Colours_table[i] & 0x00f80000) >> 8) |
((Colours_table[i] & 0x0000fc00) >> 5) |
((Colours_table[i] & 0x000000f8) >> 3);
}
/* force full redraw */
Screen_EntireDirty();
}
int retro_InitGraphics(void)
{
/* Initialize palette */
retro_PaletteUpdate();
return TRUE;
}
void retro_Render(void)
{
int x, y;
UBYTE *src, *src_line;
UWORD *dst, *dst_line;
src_line = ((UBYTE *) Screen_atari) + 24;
dst_line = Retro_Screen;
for (y = 0; y < 240; y++) {
src = src_line;
dst = dst_line;
for (x = 0; x < 336; x += 8) {
*dst++ = palette[*src++]; *dst++ = palette[*src++];
*dst++ = palette[*src++]; *dst++ = palette[*src++];
*dst++ = palette[*src++]; *dst++ = palette[*src++];
*dst++ = palette[*src++]; *dst++ = palette[*src++];
}
src_line += 384;
dst_line += 336;
}
}
void retro_ExitGraphics(void)
{
if (palette)
free(palette);
palette = NULL;
}
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