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beetle-pce-fast-libretro/libretro.cpp
Bobby Smith f513db405e Prevent crash if BIOS is missing
2023-05-17 16:37:06 +02:00

2736 lines
65 KiB
C++
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#include <stdarg.h>
#include <complex>
#include <retro_miscellaneous.h>
#include <streams/file_stream.h>
#include <string/stdstring.h>
#include <encodings/crc32.h>
#include <libretro.h>
#include "mednafen/mednafen.h"
#include "mednafen/git.h"
#include "mednafen/general.h"
#include "mednafen/state_helpers.h"
#include "mednafen/pce_fast/pce.h"
#include "mednafen/pce_fast/vdc.h"
#include "mednafen/pce_fast/psg.h"
#include "mednafen/pce_fast/input.h"
#include "mednafen/pce_fast/huc.h"
#include "mednafen/pce_fast/pcecd.h"
#include "mednafen/pce_fast/pcecd_drive.h"
#include "mednafen/hw_misc/arcade_card/arcade_card.h"
#include "mednafen/mempatcher.h"
#include "mednafen/cdrom/cdromif.h"
#include "mednafen/cdrom/CDUtility.h"
#include "libretro_core_options.h"
#ifdef _MSC_VER
#include "mednafen/msvc_compat.h"
#endif
#ifdef __PS3__
using namespace std;
#endif
std::string retro_base_directory;
#define MEDNAFEN_CORE_NAME_MODULE "pce_fast"
#define MEDNAFEN_CORE_NAME "Beetle PCE Fast"
#define MEDNAFEN_CORE_VERSION "v1.31.0.0"
#define MEDNAFEN_CORE_EXTENSIONS "pce|cue|ccd|chd|toc|m3u"
#define MEDNAFEN_CORE_TIMING_FPS 59.82
#define MEDNAFEN_CORE_GEOMETRY_BASE_W 256
#define MEDNAFEN_CORE_GEOMETRY_BASE_H 243
#define MEDNAFEN_CORE_GEOMETRY_MAX_W 512
#define MEDNAFEN_CORE_GEOMETRY_MAX_H 243
#define MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO (6.0 / 5.0)
#define FB_WIDTH 512
#define FB_HEIGHT 243
static const uint8 BRAM_Init_String[8] = { 'H', 'U', 'B', 'M', 0x00, 0x88, 0x10, 0x80 }; //"HUBM\x00\x88\x10\x80";
ArcadeCard *arcade_card = NULL;
static uint8 *HuCROM = NULL;
static uint8 HuCSF2Latch = 0;
static bool IsPopulous;
uint8 SaveRAM[2048];
static bool cdimagecache = false;
static bool use_palette = false;
std::string setting_pce_fast_cdbios = "syscard3.pce";
static int16_t sound_buf[0x10000];
/* Composite palette 2020/09/14
* authors: Dshadoff, Turboxray, Furrtek, Kitrinx and others
*/
static uint8_t composite_palette[] = {
0, 0, 0,
0, 0, 27,
1, 2, 61,
0, 0, 88,
1, 4, 123,
0, 0, 149,
2, 5, 184,
0, 2, 211,
28, 0, 4,
32, 4, 39,
29, 1, 65,
33, 6, 100,
29, 2, 127,
34, 7, 162,
30, 4, 188,
34, 9, 223,
64, 6, 16,
60, 3, 43,
65, 8, 78,
61, 5, 104,
66, 10, 139,
62, 6, 166,
66, 11, 200,
62, 8, 227,
92, 5, 20,
88, 2, 47,
93, 7, 82,
89, 4, 108,
94, 9, 143,
90, 5, 170,
94, 10, 205,
90, 7, 231,
120, 4, 25,
125, 9, 59,
121, 6, 86,
125, 11, 121,
122, 8, 147,
126, 13, 182,
122, 9, 209,
127, 14, 243,
156, 11, 37,
153, 8, 63,
157, 13, 98,
153, 10, 125,
158, 15, 160,
154, 12, 186,
158, 17, 221,
155, 13, 247,
184, 10, 41,
181, 7, 68,
185, 12, 102,
181, 9, 129,
186, 14, 164,
182, 10, 190,
186, 15, 225,
183, 12, 252,
212, 9, 45,
217, 14, 80,
213, 11, 106,
218, 16, 141,
214, 13, 168,
218, 18, 203,
214, 14, 229,
219, 19, 255,
9, 37, 2,
5, 34, 29,
9, 39, 64,
6, 36, 90,
10, 41, 125,
6, 37, 152,
11, 42, 186,
7, 39, 213,
37, 36, 6,
33, 33, 33,
37, 38, 68,
34, 35, 94,
38, 40, 129,
34, 36, 156,
39, 41, 190,
35, 38, 217,
65, 35, 10,
69, 40, 45,
65, 37, 72,
70, 42, 107,
66, 39, 133,
70, 44, 168,
67, 40, 194,
71, 45, 229,
101, 42, 23,
97, 39, 49,
102, 44, 84,
98, 41, 111,
102, 46, 145,
98, 43, 172,
103, 48, 207,
99, 44, 233,
129, 41, 27,
125, 38, 53,
130, 43, 88,
126, 40, 115,
130, 45, 150,
126, 42, 176,
131, 47, 211,
127, 43, 237,
157, 40, 31,
161, 45, 66,
158, 42, 92,
162, 47, 127,
158, 44, 154,
163, 49, 188,
159, 45, 215,
163, 50, 250,
193, 47, 43,
189, 44, 70,
194, 49, 105,
190, 46, 131,
194, 51, 166,
191, 48, 192,
195, 53, 227,
191, 49, 254,
221, 46, 47,
217, 43, 74,
222, 48, 109,
218, 45, 135,
222, 50, 170,
219, 47, 197,
223, 52, 231,
219, 48, 255,
9, 66, 0,
14, 71, 31,
10, 68, 58,
14, 73, 92,
10, 70, 119,
15, 75, 154,
11, 71, 180,
16, 76, 215,
45, 73, 9,
42, 70, 35,
46, 75, 70,
42, 72, 97,
47, 77, 131,
43, 74, 158,
39, 70, 184,
44, 75, 219,
73, 72, 13,
70, 69, 39,
74, 74, 74,
70, 71, 101,
75, 76, 135,
71, 73, 162,
75, 78, 197,
72, 74, 223,
101, 71, 17,
106, 76, 52,
102, 73, 78,
106, 78, 113,
103, 75, 139,
107, 80, 174,
103, 77, 201,
108, 82, 236,
138, 78, 29,
134, 75, 56,
138, 80, 90,
134, 77, 117,
139, 82, 152,
135, 79, 178,
131, 75, 205,
136, 80, 240,
166, 77, 33,
162, 74, 60,
166, 79, 95,
162, 76, 121,
167, 81, 156,
163, 78, 182,
168, 83, 217,
164, 79, 244,
194, 76, 37,
198, 81, 72,
194, 78, 99,
199, 83, 133,
195, 80, 160,
199, 85, 195,
196, 82, 221,
200, 87, 255,
230, 84, 50,
226, 80, 76,
230, 85, 111,
227, 82, 137,
223, 79, 164,
227, 84, 199,
224, 81, 225,
228, 86, 255,
18, 103, 0,
14, 100, 25,
18, 105, 60,
15, 102, 86,
19, 107, 121,
15, 104, 148,
20, 109, 183,
16, 105, 209,
46, 102, 3,
50, 107, 37,
46, 104, 64,
51, 109, 99,
47, 106, 125,
52, 111, 160,
48, 108, 187,
52, 113, 221,
74, 101, 7,
78, 106, 42,
74, 103, 68,
79, 108, 103,
75, 105, 129,
80, 110, 164,
76, 107, 191,
80, 112, 226,
110, 108, 19,
106, 105, 46,
111, 110, 80,
107, 107, 107,
111, 112, 142,
108, 109, 168,
112, 114, 203,
108, 110, 230,
138, 107, 23,
142, 112, 58,
139, 109, 84,
143, 114, 119,
139, 111, 146,
144, 116, 181,
140, 113, 207,
144, 118, 242,
166, 106, 27,
170, 111, 62,
167, 108, 89,
171, 113, 123,
167, 110, 150,
172, 115, 185,
168, 112, 211,
172, 117, 246,
202, 114, 40,
198, 110, 66,
203, 115, 101,
199, 112, 127,
204, 117, 162,
200, 114, 189,
204, 119, 224,
200, 116, 250,
230, 112, 44,
235, 117, 78,
231, 114, 105,
235, 119, 140,
232, 116, 166,
236, 121, 201,
232, 118, 228,
237, 123, 255,
18, 132, 0,
23, 137, 27,
19, 134, 54,
23, 139, 89,
20, 136, 115,
24, 141, 150,
20, 138, 177,
25, 143, 211,
55, 139, 5,
51, 136, 31,
55, 141, 66,
51, 138, 93,
56, 143, 128,
52, 140, 154,
57, 145, 189,
53, 141, 215,
83, 138, 9,
87, 143, 44,
83, 140, 70,
88, 145, 105,
84, 142, 132,
88, 147, 166,
85, 144, 193,
89, 149, 228,
111, 137, 13,
115, 142, 48,
111, 139, 74,
116, 144, 109,
112, 141, 136,
116, 146, 171,
113, 143, 197,
117, 148, 232,
147, 145, 25,
143, 141, 52,
147, 146, 87,
144, 143, 113,
148, 148, 148,
144, 145, 175,
149, 150, 209,
145, 147, 236,
175, 143, 29,
179, 148, 64,
175, 145, 91,
180, 150, 126,
176, 147, 152,
181, 152, 187,
177, 149, 213,
181, 154, 248,
203, 142, 34,
207, 147, 68,
203, 144, 95,
208, 149, 130,
204, 146, 156,
209, 151, 191,
205, 148, 218,
209, 153, 252,
239, 150, 46,
235, 146, 72,
240, 151, 107,
236, 148, 134,
240, 153, 169,
237, 150, 195,
241, 155, 230,
237, 152, 255,
27, 169, 0,
31, 174, 30,
28, 171, 56,
32, 176, 91,
28, 173, 118,
33, 178, 152,
29, 175, 179,
25, 171, 205,
55, 168, 0,
59, 173, 34,
56, 170, 60,
60, 175, 95,
56, 172, 122,
61, 177, 156,
57, 174, 183,
61, 179, 218,
91, 176, 11,
87, 172, 38,
92, 177, 73,
88, 174, 99,
93, 179, 134,
89, 176, 160,
93, 181, 195,
89, 178, 222,
119, 175, 15,
124, 180, 50,
120, 176, 77,
124, 181, 111,
121, 178, 138,
117, 175, 165,
121, 180, 199,
117, 177, 226,
147, 173, 19,
152, 178, 54,
148, 175, 81,
152, 180, 116,
149, 177, 142,
153, 182, 177,
149, 179, 203,
154, 184, 238,
183, 181, 32,
180, 177, 58,
184, 182, 93,
180, 179, 120,
185, 184, 154,
181, 181, 181,
185, 186, 216,
182, 183, 242,
211, 180, 36,
216, 185, 71,
212, 181, 97,
217, 186, 132,
213, 183, 158,
209, 180, 185,
213, 185, 220,
210, 182, 246,
239, 179, 40,
244, 184, 75,
240, 180, 101,
245, 185, 136,
241, 182, 163,
245, 187, 197,
241, 184, 224,
246, 189, 255,
36, 207, 0,
32, 203, 24,
36, 208, 58,
33, 205, 85,
37, 210, 120,
33, 207, 146,
38, 212, 181,
34, 209, 208,
64, 206, 1,
60, 202, 28,
64, 207, 63,
61, 204, 89,
65, 209, 124,
61, 206, 150,
66, 211, 185,
62, 208, 212,
92, 205, 5,
96, 210, 40,
92, 206, 67,
97, 211, 101,
93, 208, 128,
97, 213, 163,
94, 210, 189,
98, 215, 224,
128, 212, 18,
124, 208, 44,
129, 213, 79,
125, 210, 105,
129, 215, 140,
125, 212, 167,
130, 217, 202,
126, 214, 228,
156, 211, 22,
152, 207, 48,
157, 212, 83,
153, 209, 110,
157, 214, 144,
153, 211, 171,
158, 216, 206,
154, 213, 232,
184, 210, 26,
188, 215, 61,
185, 211, 87,
189, 216, 122,
185, 213, 148,
190, 218, 183,
186, 215, 210,
190, 220, 245,
220, 217, 38,
216, 214, 65,
221, 219, 99,
217, 215, 126,
221, 220, 161,
218, 217, 187,
222, 222, 222,
218, 219, 249,
248, 216, 42,
244, 213, 69,
249, 218, 103,
245, 214, 130,
249, 219, 165,
246, 216, 191,
250, 221, 226,
246, 218, 253,
36, 236, 0,
41, 241, 26,
37, 237, 52,
41, 242, 87,
37, 239, 114,
42, 244, 149,
38, 241, 175,
43, 246, 210,
72, 243, 3,
69, 240, 30,
73, 245, 65,
69, 241, 91,
74, 246, 126,
70, 243, 153,
74, 248, 187,
71, 245, 214,
100, 242, 8,
97, 238, 34,
101, 243, 69,
97, 240, 95,
102, 245, 130,
98, 242, 157,
102, 247, 192,
99, 244, 218,
128, 241, 12,
133, 246, 46,
129, 242, 73,
133, 247, 108,
130, 244, 134,
134, 249, 169,
130, 246, 196,
135, 251, 230,
165, 248, 24,
161, 245, 50,
165, 250, 85,
161, 246, 112,
166, 251, 147,
162, 248, 173,
167, 253, 208,
163, 250, 235,
193, 247, 28,
189, 244, 55,
193, 249, 89,
189, 245, 116,
194, 250, 151,
190, 247, 177,
195, 252, 212,
191, 249, 239,
221, 246, 32,
225, 251, 67,
221, 248, 93,
226, 253, 128,
222, 249, 155,
226, 254, 190,
223, 251, 216,
227, 255, 251,
255, 253, 44,
253, 250, 71,
255, 255, 106,
254, 251, 132,
255, 255, 167,
254, 253, 194,
255, 255, 228,
255, 255, 255
};
/* Mednafen - Multi-system Emulator
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
static PCEFast_PSG *psg = NULL;
extern ArcadeCard *arcade_card; // Bah, lousy globals.
static Blip_Buffer sbuf[2];
bool PCE_ACEnabled = false;
// Statically allocated for speed...or something.
uint8 ROMSpace[0x88 * 8192 + 8192]; // + 8192 for PC-as-pointer safety padding
uint8 BaseRAM[32768 + 8192]; // 8KB for PCE, 32KB for Super Grafx // + 8192 for PC-as-pointer safety padding
uint8 PCEIODataBuffer;
uint8 MemRead(uint32 addr)
{
return(HuCPU.PCERead[(addr / 8192) & 0xFF](addr));
}
static DECLFW(ACPhysWrite)
{
arcade_card->PhysWrite(A, V);
}
static DECLFR(ACPhysRead)
{
return(arcade_card->PhysRead(A, false));
}
static DECLFR(SaveRAMRead)
{
if((!PCE_IsCD || PCECD_IsBRAMEnabled()) && (A & 8191) < 2048)
return(SaveRAM[A & 2047]);
return(0xFF);
}
static DECLFW(SaveRAMWrite)
{
if((!PCE_IsCD || PCECD_IsBRAMEnabled()) && (A & 8191) < 2048)
SaveRAM[A & 2047] = V;
}
static DECLFR(HuCRead)
{
return ROMSpace[A];
}
static DECLFW(HuCRAMWrite)
{
ROMSpace[A] = V;
}
static DECLFW(HuCRAMWriteCDSpecial) // Hyper Dyne Special hack
{
BaseRAM[0x2000 | (A & 0x1FFF)] = V;
ROMSpace[A] = V;
}
static DECLFR(HuCSF2Read)
{
return(HuCROM[(A & 0x7FFFF) + 0x80000 + HuCSF2Latch * 0x80000 ]); // | (HuCSF2Latch << 19) ]);
}
static DECLFW(HuCSF2Write)
{
if((A & 0x1FFC) == 0x1FF0)
{
HuCSF2Latch = (A & 0x3);
}
}
static DECLFR(PCEBusRead)
{
return(0xFF);
}
static DECLFW(PCENullWrite)
{
}
static DECLFR(BaseRAMRead)
{
return BaseRAM[(size_t)A - (0xF8 * 8192)];
}
static DECLFR(BaseRAMRead_Mirrored)
{
return(BaseRAM[A & 0x1FFF]);
}
static DECLFW(BaseRAMWrite)
{
BaseRAM[(size_t)A - (0xF8 * 8192)] = V;
}
static DECLFW(BaseRAMWrite_Mirrored)
{
BaseRAM[A & 0x1FFF] = V;
}
#if defined(__GNUC__) || defined(__clang__) || defined(__ICC) || defined(__INTEL_COMPILER)
#define PCEF_CASEL(label, caseval) label
#else
#define PCEF_CASEL(label, caseval) case (caseval)
#endif
static DECLFR(IORead)
{
A &= 0x1FFF;
#if defined(__GNUC__) || defined(__clang__) || defined(__ICC) || defined(__INTEL_COMPILER)
const void * const IOReadHandlers[0x20] =
{
&&VDC_00, &&VDC_01, &&VDC_02, &&VDC_03,
&&VCE_00, &&VCE_01, &&VCE_02, &&VCE_03,
&&PSG_00, &&PSG_01, &&PSG_02, &&PSG_03,
&&TIMER_00, &&TIMER_01, &&TIMER_02, &&TIMER_03,
&&INPUT_00, &&INPUT_01, &&INPUT_02, &&INPUT_03,
&&IRQ_00, &&IRQ_01, &&IRQ_02, &&IRQ_03,
&&CDROM_00, &&CDROM_01, &&CDROM_02, &&CDROM_03,
&&EXP_00, &&EXP_01, &&EXP_02, &&EXP_03
};
goto *IOReadHandlers[((A & 0x1C00) >> 8) | (A & 0x3)];
#else
switch(((A & 0x1C00) >> 8) | (A & 0x3))
#endif
{
PCEF_CASEL(VDC_00, 0x00):
HuC6280_StealCycle();
return(VDC_Read(0));
PCEF_CASEL(VDC_01, 0x01):
HuC6280_StealCycle();
return(VDC_Read(1));
PCEF_CASEL(VDC_02, 0x02):
HuC6280_StealCycle();
return(VDC_Read(2));
PCEF_CASEL(VDC_03, 0x03):
HuC6280_StealCycle();
return(VDC_Read(3));
PCEF_CASEL(VCE_00, 0x04):
PCEF_CASEL(VCE_01, 0x05):
PCEF_CASEL(VCE_02, 0x06):
PCEF_CASEL(VCE_03, 0x07):
HuC6280_StealCycle();
return(VCE_Read(A));
PCEF_CASEL(PSG_00, 0x08):
PCEF_CASEL(PSG_01, 0x09):
PCEF_CASEL(PSG_02, 0x0A):
PCEF_CASEL(PSG_03, 0x0B):
if(HuCPU.in_block_move)
return(0);
return(PCEIODataBuffer);
PCEF_CASEL(TIMER_00, 0x0C):
PCEF_CASEL(TIMER_01, 0x0D):
PCEF_CASEL(TIMER_02, 0x0E):
PCEF_CASEL(TIMER_03, 0x0F):
if(HuCPU.in_block_move)
return(0);
{
uint8 ret = HuC6280_TimerRead(A);
PCEIODataBuffer = ret;
return(ret);
}
PCEF_CASEL(INPUT_00, 0x10):
PCEF_CASEL(INPUT_01, 0x11):
PCEF_CASEL(INPUT_02, 0x12):
PCEF_CASEL(INPUT_03, 0x13):
if(HuCPU.in_block_move)
return(0);
{
uint8 ret = INPUT_Read(A);
PCEIODataBuffer = ret;
return(ret);
}
PCEF_CASEL(IRQ_00, 0x14):
PCEF_CASEL(IRQ_01, 0x15):
PCEF_CASEL(IRQ_02, 0x16):
PCEF_CASEL(IRQ_03, 0x17):
if(HuCPU.in_block_move)
return(0);
{
uint8 ret = HuC6280_IRQStatusRead(A);
PCEIODataBuffer = ret;
return(ret);
}
PCEF_CASEL(CDROM_00, 0x18):
PCEF_CASEL(CDROM_01, 0x19):
PCEF_CASEL(CDROM_02, 0x1A):
PCEF_CASEL(CDROM_03, 0x1B):
if(!PCE_IsCD)
return(0xFF);
if((A & 0x1E00) == 0x1A00)
{
if(arcade_card)
return(arcade_card->Read(A & 0x1FFF, false));
return(0);
}
return(PCECD_Read(HuCPU.timestamp * 3, A));
PCEF_CASEL(EXP_00, 0x1C):
PCEF_CASEL(EXP_01, 0x1D):
PCEF_CASEL(EXP_02, 0x1E):
PCEF_CASEL(EXP_03, 0x1F):
#ifdef HAVE_HES
if(IsHES)
return(ReadIBP(A));
#endif
return(0xFF);
}
}
static DECLFW(IOWrite)
{
A &= 0x1FFF;
switch(A >> 10)
{
case 0:
HuC6280_StealCycle();
VDC_Write(A, V);
break;
case 1:
HuC6280_StealCycle();
VCE_Write(A, V);
break;
case 2:
PCEIODataBuffer = V;
psg->Write(HuCPU.timestamp / pce_overclocked, A, V);
break;
case 3:
PCEIODataBuffer = V;
HuC6280_TimerWrite(A, V);
break;
case 4:
PCEIODataBuffer = V;
INPUT_Write(A, V);
break;
case 5:
PCEIODataBuffer = V;
HuC6280_IRQStatusWrite(A, V);
break;
case 6:
if(!PCE_IsCD)
break;
if((A & 0x1E00) == 0x1A00)
{
if(arcade_card)
arcade_card->Write(A & 0x1FFF, V);
}
else
PCECD_Write(HuCPU.timestamp * 3, A, V);
break;
case 7:
break; // Expansion.
}
}
static void PCECDIRQCB(bool asserted)
{
if(asserted)
HuC6280_IRQBegin(MDFN_IQIRQ2);
else
HuC6280_IRQEnd(MDFN_IQIRQ2);
}
bool PCE_InitCD(void)
{
PCECD_Settings cd_settings;
memset(&cd_settings, 0, sizeof(PCECD_Settings));
cd_settings.CDDA_Volume = (double)MDFN_GetSettingUI("pce_fast.cddavolume") / 100;
cd_settings.CD_Speed = MDFN_GetSettingUI("pce_fast.cdspeed");
cd_settings.ADPCM_Volume = (double)MDFN_GetSettingUI("pce_fast.adpcmvolume") / 100;
cd_settings.ADPCM_LPF = MDFN_GetSettingB("pce_fast.adpcmlp");
return(PCECD_Init(&cd_settings, PCECDIRQCB, PCE_MASTER_CLOCK, pce_overclocked, &sbuf[0], &sbuf[1]));
}
static int LoadCommon(void);
static void LoadCommonPre(void);
static int HuCLoad(const uint8 *data, uint32 len, uint32 crc32)
{
int x;
uint32 crc = 0;
uint32 sf2_threshold = 2048 * 1024;
uint32 sf2_required_size = 2048 * 1024 + 512 * 1024;
uint32 m_len = (len + 8191)&~8191;
bool sf2_mapper = false;
if(m_len >= sf2_threshold)
{
sf2_mapper = true;
if(m_len != sf2_required_size)
m_len = sf2_required_size;
}
IsPopulous = 0;
PCE_IsCD = 0;
if(!(HuCROM = (uint8 *)malloc(m_len)))
return(0);
memset(HuCROM, 0xFF, m_len);
memcpy(HuCROM, data, (m_len < len) ? m_len : len);
memset(ROMSpace, 0xFF, 0x88 * 8192 + 8192);
if(m_len == 0x60000)
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, 0x20 * 8192);
memcpy(ROMSpace + 0x20 * 8192, HuCROM, 0x20 * 8192);
memcpy(ROMSpace + 0x40 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x50 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x60 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
memcpy(ROMSpace + 0x70 * 8192, HuCROM + 0x20 * 8192, 0x10 * 8192);
}
else if(m_len == 0x80000)
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, 0x40 * 8192);
memcpy(ROMSpace + 0x40 * 8192, HuCROM + 0x20 * 8192, 0x20 * 8192);
memcpy(ROMSpace + 0x60 * 8192, HuCROM + 0x20 * 8192, 0x20 * 8192);
}
else
{
memcpy(ROMSpace + 0x00 * 8192, HuCROM, (m_len < 1024 * 1024) ? m_len : 1024 * 1024);
}
for(x = 0x00; x < 0x80; x++)
{
HuCPU.FastMap[x] = &ROMSpace[x * 8192];
HuCPU.PCERead[x] = HuCRead;
}
if(!memcmp(HuCROM + 0x1F26, "POPULOUS", strlen("POPULOUS")))
{
uint8 *PopRAM = ROMSpace + 0x40 * 8192;
memset(PopRAM, 0xFF, 32768);
IsPopulous = 1;
for(x = 0x40; x < 0x44; x++)
{
HuCPU.FastMap[x] = &PopRAM[(x & 3) * 8192];
HuCPU.PCERead[x] = HuCRead;
HuCPU.PCEWrite[x] = HuCRAMWrite;
}
MDFNMP_AddRAM(32768, 0x40 * 8192, PopRAM);
}
else
{
memset(SaveRAM, 0x00, 2048);
memcpy(SaveRAM, BRAM_Init_String, 8); // So users don't have to manually intialize the file cabinet
// in the CD BIOS screen.
HuCPU.PCEWrite[0xF7] = SaveRAMWrite;
HuCPU.PCERead[0xF7] = SaveRAMRead;
MDFNMP_AddRAM(2048, 0xF7 * 8192, SaveRAM);
}
// 0x1A558
//if(len >= 0x20000 && !memcmp(HuCROM + 0x1A558, "STREET FIGHTER#", strlen("STREET FIGHTER#")))
/* Street Fighter 2 Mapper */
if(sf2_mapper)
{
for(x = 0x40; x < 0x80; x++)
HuCPU.PCERead[x] = HuCSF2Read;
HuCPU.PCEWrite[0] = HuCSF2Write;
HuCSF2Latch = 0;
}
return(1);
}
static int Load(const uint8_t *data, size_t size)
{
int x;
uint32 headerlen = 0;
uint32 r_size;
LoadCommonPre();
if(size & 0x200) // 512 byte header!
headerlen = 512;
r_size = size - headerlen;
if(r_size > 4096 * 1024) r_size = 4096 * 1024;
for(x = 0; x < 0x100; x++)
{
HuCPU.PCERead[x] = PCEBusRead;
HuCPU.PCEWrite[x] = PCENullWrite;
}
uint32 crc = encoding_crc32(0, data + headerlen, size - headerlen);
HuCLoad(data + headerlen, size - headerlen, crc);
if(crc == 0xfae0fc60)
OrderOfGriffonFix = true;
return(LoadCommon());
}
static void LoadCommonPre(void)
{
int x;
HuC6280_Init();
// FIXME: Make these globals less global!
pce_overclocked = MDFN_GetSettingUI("pce_fast.ocmultiplier");
PCE_ACEnabled = MDFN_GetSettingB("pce_fast.arcadecard");
for(x = 0; x < 0x100; x++)
{
HuCPU.PCERead[x] = PCEBusRead;
HuCPU.PCEWrite[x] = PCENullWrite;
}
MDFNMP_Init(1024, (1 << 21) / 1024);
}
static int LoadCommon(void)
{
int x;
VDC_Init();
{
HuCPU.PCERead[0xF8] = BaseRAMRead;
HuCPU.PCERead[0xF9] = HuCPU.PCERead[0xFA] = HuCPU.PCERead[0xFB] = BaseRAMRead_Mirrored;
HuCPU.PCEWrite[0xF8] = BaseRAMWrite;
HuCPU.PCEWrite[0xF9] = HuCPU.PCEWrite[0xFA] = HuCPU.PCEWrite[0xFB] = BaseRAMWrite_Mirrored;
for(x = 0xf8; x < 0xfb; x++)
HuCPU.FastMap[x] = &BaseRAM[0];
HuCPU.PCERead[0xFF] = IORead;
}
MDFNMP_AddRAM(8192, 0xf8 * 8192, BaseRAM);
HuCPU.PCEWrite[0xFF] = IOWrite;
psg = new PCEFast_PSG(&sbuf[0], &sbuf[1]);
psg->SetVolume(1.0);
if(PCE_IsCD)
{
unsigned int cdpsgvolume = MDFN_GetSettingUI("pce_fast.cdpsgvolume");
psg->SetVolume(0.678 * cdpsgvolume / 100);
}
PCEINPUT_Init();
PCE_Power();
return(1);
}
#ifdef _WIN32
static void sanitize_path(std::string &path)
{
size_t i;
size_t size = path.size();
for (i = 0; i < size; i++)
if (path[i] == '/')
path[i] = '\\';
}
#endif
// Use a simpler approach to make sure that things go right for libretro.
static std::string MDFN_MakeFName(MakeFName_Type type, int id1, const char *cd1)
{
#ifdef _WIN32
char slash = '\\';
#else
char slash = '/';
#endif
std::string ret;
switch (type)
{
case MDFNMKF_FIRMWARE:
ret = retro_base_directory + slash + std::string(cd1);
#ifdef _WIN32
sanitize_path(ret); // Because Windows path handling is mongoloid.
#endif
break;
default:
break;
}
if (log_cb)
log_cb(RETRO_LOG_INFO, "MDFN_MakeFName: %s\n", ret.c_str());
return ret;
}
static void Cleanup(void)
{
if(arcade_card)
delete arcade_card;
arcade_card = NULL;
if(PCE_IsCD)
PCECD_Close();
if(HuCROM)
free(HuCROM);
HuCROM = NULL;
}
static int HuCLoadCD(const char *bios_path)
{
int x;
MDFNFILE *fp = file_open(bios_path);
if(!fp)
{
MDFN_DispMessage("Firmware not found: '%s'", bios_path);
return(0);
}
memset(ROMSpace, 0xFF, 262144);
memcpy(ROMSpace, fp->data + (fp->size & 512), ((fp->size & ~512) > 262144) ? 262144 : (fp->size &~ 512) );
if (fp)
file_close(fp);
fp = NULL;
PCE_IsCD = 1;
PCE_InitCD();
for(x = 0; x < 0x40; x++)
{
HuCPU.FastMap[x] = &ROMSpace[x * 8192];
HuCPU.PCERead[x] = HuCRead;
}
for(x = 0x68; x < 0x88; x++)
{
HuCPU.FastMap[x] = &ROMSpace[x * 8192];
HuCPU.PCERead[x] = HuCRead;
HuCPU.PCEWrite[x] = HuCRAMWrite;
}
HuCPU.PCEWrite[0x80] = HuCRAMWriteCDSpecial; // Hyper Dyne Special hack
MDFNMP_AddRAM(262144, 0x68 * 8192, ROMSpace + 0x68 * 8192);
if(PCE_ACEnabled)
{
if (!(arcade_card = new ArcadeCard()))
{
Cleanup();
return(0);
}
for(x = 0x40; x < 0x44; x++)
{
HuCPU.PCERead[x] = ACPhysRead;
HuCPU.PCEWrite[x] = ACPhysWrite;
}
}
memset(SaveRAM, 0x00, 2048);
memcpy(SaveRAM, BRAM_Init_String, 8); // So users don't have to manually intialize the file cabinet
// in the CD BIOS screen.
HuCPU.PCEWrite[0xF7] = SaveRAMWrite;
HuCPU.PCERead[0xF7] = SaveRAMRead;
MDFNMP_AddRAM(2048, 0xF7 * 8192, SaveRAM);
return(1);
}
static int LoadCD(std::vector<CDIF *> *CDInterfaces)
{
std::string bios_path = MDFN_MakeFName(MDFNMKF_FIRMWARE, 0, setting_pce_fast_cdbios.c_str() );
LoadCommonPre();
if(!HuCLoadCD(bios_path.c_str()))
return(0);
PCECD_Drive_SetDisc(true, NULL, true);
PCECD_Drive_SetDisc(false, (*CDInterfaces)[0], true);
return(LoadCommon());
}
static void HuC_Close(void)
{
Cleanup();
}
static void Cleanup_PCE(void)
{
HuC_Close();
VDC_Close();
if(psg)
delete psg;
psg = NULL;
}
static void CloseGame(void)
{
Cleanup_PCE();
}
static void Emulate(EmulateSpecStruct *espec)
{
INPUT_Frame();
MDFNMP_ApplyPeriodicCheats();
if(espec->VideoFormatChanged)
VDC_SetPixelFormat(espec->CustomPalette, espec->CustomPaletteNumEntries);
VDC_RunFrame(espec, false);
if(PCE_IsCD)
{
PCECD_Run(HuCPU.timestamp * 3);
}
psg->EndFrame(HuCPU.timestamp / pce_overclocked);
{
uint8_t y;
for(y = 0; y < 2; y++)
{
Blip_Buffer_end_frame(&sbuf[y], HuCPU.timestamp / pce_overclocked);
espec->SoundBufSize = Blip_Buffer_read_samples(&sbuf[y],
espec->SoundBuf + y,
sizeof(sound_buf) >> 1);
}
}
INPUT_FixTS();
HuC6280_ResetTS();
if(PCE_IsCD)
PCECD_ResetTS();
}
int HuC_StateAction(StateMem *sm, int load, int data_only)
{
SFORMAT StateRegs[] =
{
SFARRAY(ROMSpace + 0x40 * 8192, IsPopulous ? 32768 : 0),
SFARRAY(SaveRAM, IsPopulous ? 0 : 2048),
SFARRAY(ROMSpace + 0x68 * 8192, PCE_IsCD ? 262144 : 0),
SFVARN(HuCSF2Latch, "HuCSF2Latch"),
SFEND
};
int ret = MDFNSS_StateAction(sm, load, data_only, StateRegs, "HuC", false);
if(load)
HuCSF2Latch &= 0x3;
if(PCE_IsCD)
{
ret &= PCECD_StateAction(sm, load, data_only);
if(arcade_card)
ret &= arcade_card->StateAction(sm, load, data_only);
}
return(ret);
}
void HuC_Power(void)
{
if(PCE_IsCD)
memset(ROMSpace + 0x68 * 8192, 0x00, 262144);
if(arcade_card)
arcade_card->Power();
}
extern "C" int StateAction(StateMem *sm, int load, int data_only)
{
SFORMAT StateRegs[] =
{
SFARRAY(BaseRAM, 8192),
SFVARN(PCEIODataBuffer, "PCEIODataBuffer"),
SFEND
};
int ret = MDFNSS_StateAction(sm, load, data_only, StateRegs, "MAIN", false);
ret &= HuC6280_StateAction(sm, load, data_only);
ret &= VDC_StateAction(sm, load, data_only);
ret &= psg->StateAction(sm, load, data_only);
ret &= INPUT_StateAction(sm, load, data_only);
ret &= HuC_StateAction(sm, load, data_only);
return(ret);
}
void PCE_Power(void)
{
memset(BaseRAM, 0x00, sizeof(BaseRAM));
for(int i = 8192; i < 32768; i++)
BaseRAM[i] = 0xFF;
PCEIODataBuffer = 0xFF;
HuC6280_Power();
VDC_Power();
psg->Power(HuCPU.timestamp / pce_overclocked);
HuC_Power();
if(PCE_IsCD)
{
PCECD_Power(HuCPU.timestamp * 3);
}
}
static void DoSimpleCommand(int cmd)
{
switch(cmd)
{
case MDFN_MSC_RESET: PCE_Power(); break;
case MDFN_MSC_POWER: PCE_Power(); break;
}
}
bool IsBRAMUsed(void)
{
int x;
if(memcmp(SaveRAM, BRAM_Init_String, 8)) // HUBM string is modified/missing
return(1);
for(x = 8; x < 2048; x++)
if(SaveRAM[x]) return(1);
return(0);
}
static void ReadM3U(std::vector<std::string> &file_list, std::string path, unsigned depth = 0)
{
std::string dir_path;
char linebuf[2048];
RFILE *fp = filestream_open(path.c_str(), RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!fp)
return;
MDFN_GetFilePathComponents(path, &dir_path);
while(filestream_gets(fp, linebuf, sizeof(linebuf)) != NULL)
{
std::string efp;
if(linebuf[0] == '#')
continue;
string_trim_whitespace_right(linebuf);
if(linebuf[0] == 0)
continue;
efp = MDFN_EvalFIP(dir_path, std::string(linebuf));
if(efp.size() >= 4 && efp.substr(efp.size() - 4) == ".m3u")
{
if(efp == path)
{
log_cb(RETRO_LOG_ERROR, "M3U at \"%s\" references self.\n", efp.c_str());
goto end;
}
if(depth == 99)
{
log_cb(RETRO_LOG_ERROR, "M3U load recursion too deep!\n");
goto end;
}
ReadM3U(file_list, efp, depth++);
}
else
file_list.push_back(efp);
}
end:
filestream_close(fp);
}
static std::vector<CDIF *> CDInterfaces; // FIXME: Cleanup on error out.
// TODO: LoadCommon()
static bool MDFNI_LoadCD(const char *path, const char *ext)
{
bool ret = false;
if (!path || !ext)
{
log_cb(RETRO_LOG_ERROR, "Error opening CD - invalid path\n");
return false;
}
log_cb(RETRO_LOG_INFO, "Loading %s...\n\n", path);
if(!strcasecmp(ext, "m3u"))
{
std::vector<std::string> file_list;
ReadM3U(file_list, path);
for(unsigned i = 0; i < file_list.size(); i++)
{
CDIF *cdif = CDIF_Open(file_list[i].c_str(), cdimagecache);
CDInterfaces.push_back(cdif);
}
}
else
{
CDIF *cdif = CDIF_Open(path, cdimagecache);
if (cdif)
{
ret = true;
CDInterfaces.push_back(cdif);
}
}
if (!ret)
{
log_cb(RETRO_LOG_ERROR, "Error opening CD.\n");
return false;
}
if(!(LoadCD(&CDInterfaces)))
{
unsigned i;
for(i = 0; i < CDInterfaces.size(); i++)
delete CDInterfaces[i];
CDInterfaces.clear();
return false;
}
//MDFNI_SetLayerEnableMask(~0ULL);
MDFN_LoadGameCheats(NULL);
MDFNMP_InstallReadPatches();
return true;
}
static bool MDFNI_LoadGame(const char *path, const char *ext,
const uint8_t *data, size_t size)
{
MDFNFILE *GameFile = NULL;
const uint8_t *content_data = NULL;
size_t content_size = 0;
if(ext &&
(!strcasecmp(ext, "cue") ||
!strcasecmp(ext, "ccd") ||
!strcasecmp(ext, "chd") ||
!strcasecmp(ext, "toc") ||
!strcasecmp(ext, "m3u")))
return MDFNI_LoadCD(path, ext);
/* Check whether we already have a valid
* data buffer */
if (data)
{
content_data = data;
content_size = size;
}
else
{
if (!path)
{
log_cb(RETRO_LOG_ERROR, "Error loading content - invalid path\n");
goto error;
}
/* Load content from file */
GameFile = file_open(path);
if(!GameFile)
goto error;
content_data = GameFile->data;
content_size = GameFile->size;
}
if(Load(content_data, content_size) <= 0)
goto error;
MDFN_LoadGameCheats(NULL);
MDFNMP_InstallReadPatches();
if (GameFile)
file_close(GameFile);
return true;
error:
if (GameFile)
file_close(GameFile);
return false;
}
static uint8 lastchar = 0;
struct retro_perf_callback perf_cb;
retro_get_cpu_features_t perf_get_cpu_features_cb = NULL;
retro_log_printf_t log_cb;
static retro_video_refresh_t video_cb;
static retro_audio_sample_t audio_cb;
static retro_audio_sample_batch_t audio_batch_cb;
static retro_environment_t environ_cb;
static retro_input_poll_t input_poll_cb;
static retro_input_state_t input_state_cb;
static bool libretro_supports_option_categories = false;
static bool libretro_supports_bitmasks = false;
static MDFN_Surface *surf = NULL;
static bool failed_init = false;
static unsigned video_width = 0;
static unsigned video_height = 0;
static uint64_t video_frames = 0;
static uint64_t audio_frames = 0;
#include "mednafen/pce_fast/pcecd.h"
/* Frameskipping Support */
static unsigned frameskip_type = 0;
static unsigned frameskip_threshold = 0;
static uint16_t frameskip_counter = 0;
static bool retro_audio_buff_active = false;
static unsigned retro_audio_buff_occupancy = 0;
static bool retro_audio_buff_underrun = false;
/* Maximum number of consecutive frames that
* can be skipped */
#define FRAMESKIP_MAX 30
static unsigned audio_latency = 0;
static bool update_audio_latency = false;
static void retro_audio_buff_status_cb(
bool active, unsigned occupancy, bool underrun_likely)
{
retro_audio_buff_active = active;
retro_audio_buff_occupancy = occupancy;
retro_audio_buff_underrun = underrun_likely;
}
static void init_frameskip(void)
{
if (frameskip_type > 0)
{
struct retro_audio_buffer_status_callback buf_status_cb;
buf_status_cb.callback = retro_audio_buff_status_cb;
if (!environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK,
&buf_status_cb))
{
if (log_cb)
log_cb(RETRO_LOG_WARN, "Frameskip disabled - frontend does not support audio buffer status monitoring.\n");
retro_audio_buff_active = false;
retro_audio_buff_occupancy = 0;
retro_audio_buff_underrun = false;
audio_latency = 0;
}
else
{
/* Frameskip is enabled - increase frontend
* audio latency to minimise potential
* buffer underruns */
float frame_time_msec = 1000.0f / (float)MEDNAFEN_CORE_TIMING_FPS;
/* Set latency to 6x current frame time... */
audio_latency = (unsigned)((6.0f * frame_time_msec) + 0.5f);
/* ...then round up to nearest multiple of 32 */
audio_latency = (audio_latency + 0x1F) & ~0x1F;
}
}
else
{
environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK, NULL);
audio_latency = 0;
}
update_audio_latency = true;
}
static void check_system_specs(void)
{
unsigned level = 5;
environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
}
void retro_init(void)
{
struct retro_log_callback log;
if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
log_cb = log.log;
else
log_cb = NULL;
CDUtility_Init();
const char *dir = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir)
{
retro_base_directory = dir;
// Make sure that we don't have any lingering slashes, etc, as they break Windows.
size_t last = retro_base_directory.find_last_not_of("/\\");
if (last != std::string::npos)
last++;
retro_base_directory = retro_base_directory.substr(0, last);
}
else
{
/* TODO: Add proper fallback */
if (log_cb)
log_cb(RETRO_LOG_WARN, "System directory is not defined. Fallback on using same dir as ROM for system directory later ...\n");
failed_init = true;
}
enum retro_pixel_format rgb565 = RETRO_PIXEL_FORMAT_RGB565;
if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &rgb565) && log_cb)
log_cb(RETRO_LOG_INFO, "Frontend supports RGB565 - will use that instead of XRGB1555.\n");
if (environ_cb(RETRO_ENVIRONMENT_GET_PERF_INTERFACE, &perf_cb))
perf_get_cpu_features_cb = perf_cb.get_cpu_features;
else
perf_get_cpu_features_cb = NULL;
bool yes = true;
environ_cb(RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS, &yes);
setting_initial_scanline = 0;
setting_last_scanline = 242;
check_system_specs();
libretro_supports_bitmasks = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_INPUT_BITMASKS, NULL))
libretro_supports_bitmasks = true;
frameskip_type = 0;
frameskip_threshold = 0;
frameskip_counter = 0;
retro_audio_buff_active = false;
retro_audio_buff_occupancy = 0;
retro_audio_buff_underrun = false;
audio_latency = 0;
update_audio_latency = false;
video_width = 0;
video_height = 0;
video_frames = 0;
audio_frames = 0;
lastchar = 0;
failed_init = false;
}
void retro_reset(void)
{
DoSimpleCommand(MDFN_MSC_RESET);
}
bool retro_load_game_special(unsigned, const struct retro_game_info *, size_t)
{
return false;
}
static void set_volume (uint32_t *ptr, unsigned number)
{
switch(number)
{
default:
*ptr = number;
break;
}
}
#define MAX_PLAYERS 5
#define MAX_BUTTONS 15
static uint8_t input_type[MAX_PLAYERS] = {};
static uint8_t input_buf[MAX_PLAYERS][5] = {};
static float mouse_sensitivity = 1.0f;
static bool disable_softreset = false;
// Array to keep track of whether a given player's button is turbo
static int turbo_enable[MAX_PLAYERS][MAX_BUTTONS] = {};
// Array to keep track of each buttons turbo status
static int turbo_counter[MAX_PLAYERS][MAX_BUTTONS] = {};
// The number of frames between each firing of a turbo button
static int Turbo_Delay;
static int Turbo_Toggling = 1;
static bool turbo_toggle_alt = false;
static int psg_channels_volume[6] = { 100, 100, 100, 100, 100, 100 };
static int turbo_toggle_down[MAX_PLAYERS][MAX_BUTTONS] = {};
static void check_variables(bool first_run)
{
struct retro_variable var = {0};
unsigned frameskip_type_prev;
if (first_run)
{
var.key = "pce_fast_cdimagecache";
cdimagecache = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
if (strcmp(var.value, "enabled") == 0)
cdimagecache = true;
var.key = "pce_fast_cdbios";
setting_pce_fast_cdbios = "syscard3.pce";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "System Card 3") == 0)
setting_pce_fast_cdbios = "syscard3.pce";
else if (strcmp(var.value, "System Card 2") == 0)
setting_pce_fast_cdbios = "syscard2.pce";
else if (strcmp(var.value, "System Card 1") == 0)
setting_pce_fast_cdbios = "syscard1.pce";
else if (strcmp(var.value, "Games Express") == 0)
setting_pce_fast_cdbios = "gexpress.pce";
else if (strcmp(var.value, "System Card 3 US") == 0)
setting_pce_fast_cdbios = "syscard3u.pce";
else if (strcmp(var.value, "System Card 2 US") == 0)
setting_pce_fast_cdbios = "syscard2u.pce";
}
char key[256];
key[0] = '\0';
var.key = key ;
for (int i = 0 ; i < MAX_PLAYERS ; i++)
{
snprintf(key, sizeof(key), "pce_fast_default_joypad_type_p%d", i + 1);
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if(strcmp(var.value, "2 Buttons") == 0)
AVPad6Enabled[i] = false;
else if(strcmp(var.value, "6 Buttons") == 0)
AVPad6Enabled[i] = true;
}
}
}
var.key = "pce_fast_nospritelimit";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "disabled") == 0)
setting_pce_fast_nospritelimit = 0;
else if (strcmp(var.value, "enabled") == 0)
setting_pce_fast_nospritelimit = 1;
}
var.key = "pce_fast_ocmultiplier";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_pce_overclocked = atoi(var.value);
}
var.key = "pce_fast_frameskip";
var.value = NULL;
frameskip_type_prev = frameskip_type;
frameskip_type = 0;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "auto") == 0)
frameskip_type = 1;
else if (strcmp(var.value, "manual") == 0)
frameskip_type = 2;
}
/* Reinitialise frameskipping, if required */
if (first_run || (frameskip_type != frameskip_type_prev))
init_frameskip();
var.key = "pce_fast_frameskip_threshold";
var.value = NULL;
frameskip_threshold = 33;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
frameskip_threshold = strtol(var.value, NULL, 10);
var.key = "pce_fast_hoverscan";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_pce_hoverscan = atoi(var.value);
}
var.key = "pce_fast_initial_scanline";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_initial_scanline = atoi(var.value);
}
var.key = "pce_fast_last_scanline";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
setting_last_scanline = atoi(var.value);
}
bool do_cdsettings = false;
var.key = "pce_fast_cddavolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cddavolume = atoi(var.value);
}
var.key = "pce_fast_adpcmvolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_adpcmvolume = atoi(var.value);
}
var.key = "pce_fast_cdpsgvolume";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cdpsgvolume = atoi(var.value);
}
var.key = "pce_fast_cdspeed";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
do_cdsettings = true;
setting_pce_fast_cdspeed = atoi(var.value);
}
if (do_cdsettings)
{
PCECD_Settings settings = {0};
settings.CDDA_Volume = (double)setting_pce_fast_cddavolume / 100;
settings.CD_Speed = setting_pce_fast_cdspeed;
settings.ADPCM_Volume = (double)setting_pce_fast_adpcmvolume / 100;
if (PCECD_SetSettings(&settings) && log_cb)
log_cb(RETRO_LOG_INFO, "PCE CD Audio settings changed.\n");
}
char pce_sound_channel_volume_base_str[] = "pce_fast_sound_channel_0_volume";
var.key = pce_sound_channel_volume_base_str;
for (unsigned c = 0; c < 6; c++) {;
pce_sound_channel_volume_base_str[23] = c+'0';
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
psg_channels_volume[c] = atoi(var.value);
}
}
// Set Turbo_Toggling
var.key = "pce_fast_turbo_toggling";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
Turbo_Toggling = 1;
else
Turbo_Toggling = 0;
}
// Set TURBO_DELAY
var.key = "pce_fast_turbo_delay";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
Turbo_Delay = atoi(var.value);
}
// False sets turbo hotkey X/Y, true assigns hotkey to L3/R3
var.key = "pce_fast_turbo_toggle_hotkey";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "enabled") == 0)
turbo_toggle_alt = true;
else
turbo_toggle_alt = false;
}
var.key = "pce_fast_disable_softreset";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
disable_softreset = (strcmp(var.value, "enabled") == 0);
}
var.key = "pce_fast_mouse_sensitivity";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
mouse_sensitivity = atof(var.value);
}
var.key = "pce_fast_palette";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
{
if (strcmp(var.value, "Composite") == 0)
use_palette = true;
else
use_palette = false;
}
}
bool retro_load_game(const struct retro_game_info *info)
{
uint8_t y;
unsigned c;
struct retro_input_descriptor desc[] = {
#define button_ids(INDEX) \
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "II" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "I" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "IV" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "III" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "V" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "VI" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2, "Mode Switch" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT, "Select" },\
{ INDEX, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Run" },
button_ids(0)
button_ids(1)
button_ids(2)
button_ids(3)
button_ids(4)
{ 0 },
};
const struct retro_game_info_ext *info_ext = NULL;
const uint8_t *content_data = NULL;
size_t content_size = 0;
const char *content_path = NULL;
char content_ext[8];
content_ext[0] = '\0';
if (failed_init)
return false;
/* Attempt to fetch extended game info */
if (environ_cb(RETRO_ENVIRONMENT_GET_GAME_INFO_EXT, &info_ext))
{
content_data = (const uint8_t *)info_ext->data;
content_size = info_ext->size;
/* Content path information is only required
* if we do not have a valid data buffer */
if (!content_data)
{
content_path = info_ext->full_path;
strncpy(content_ext, info_ext->ext, sizeof(content_ext));
content_ext[sizeof(content_ext) - 1] = '\0';
}
}
else
{
const char *ext = NULL;
if (!info || !info->path)
return false;
content_data = NULL;
content_size = 0;
content_path = info->path;
if ((ext = strrchr(info->path, '.')))
{
strncpy(content_ext, ext + 1, sizeof(content_ext));
content_ext[sizeof(content_ext) - 1] = '\0';
}
}
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
check_variables(true);
if (!MDFNI_LoadGame(content_path, content_ext,
content_data, content_size))
return false;
surf = (MDFN_Surface*)calloc(1, sizeof(*surf));
if (!surf)
return false;
surf->width = FB_WIDTH;
surf->height = FB_HEIGHT;
surf->pitch = FB_WIDTH;
surf->pixels = (uint16_t*) calloc(2, FB_WIDTH * FB_HEIGHT);
if (!surf->pixels)
{
free(surf);
return false;
}
// Possible endian bug ...
for (unsigned i = 0; i < MAX_PLAYERS; i++) {
input_type[i] = RETRO_DEVICE_JOYPAD;
PCEINPUT_SetInput(i, "gamepad", (uint8_t*)&input_buf[i][0]);
}
VDC_SetPixelFormat(NULL, 0);
struct retro_memory_descriptor descs[8];
struct retro_memory_map mmaps;
int i = 0;
memset(descs, 0, sizeof(descs));
descs[i].ptr = (uint8_t*)BaseRAM;
descs[i].start = 0xf8 * 8192;
descs[i].len = 8192;
descs[i].select = 0xFFFFE000;
i++;
if (IsPopulous)
{
descs[i].ptr = (uint8_t*)(ROMSpace + 0x40 * 8192);
descs[i].start = 0x40 * 8192;
descs[i].len = 8192 * 4;
i++;
}
else
{
descs[i].ptr = (uint8_t*)SaveRAM;
descs[i].start = 0xf7 * 8192;
descs[i].len = 2048;
i++;
}
if (PCE_IsCD)
{
// Super System Card RAM
descs[i].ptr = (uint8_t*)(ROMSpace + 0x68 * 8192);
descs[i].start = 0x68 * 8192;
descs[i].len = 8192 * 24;
descs[i].select = 0xFFFD0000;
i++;
// CD RAM
descs[i].ptr = (uint8_t*)(ROMSpace + 0x80 * 8192);
descs[i].start = 0x80 * 8192;
descs[i].len = 8192 * 8;
descs[i].select = 0xFFFF0000;
i++;
}
for (c = 0; c < 6; c++)
psg->SetChannelUserVolume(c, psg_channels_volume[c]);
mmaps.descriptors = descs;
mmaps.num_descriptors = i;
environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
for(y = 0; y < 2; y++)
{
Blip_Buffer_set_sample_rate(&sbuf[y],
44100, 50);
Blip_Buffer_set_clock_rate(&sbuf[y], (long)(PCE_MASTER_CLOCK / 3));
Blip_Buffer_bass_freq(&sbuf[y], 10);
}
return true;
}
void retro_unload_game(void)
{
unsigned i;
MDFN_FlushGameCheats(0);
CloseGame();
MDFNMP_Kill();
for(i = 0; i < CDInterfaces.size(); i++)
delete CDInterfaces[i];
CDInterfaces.clear();
}
static void update_input(void)
{
unsigned i,j;
int16_t joy_bits[MAX_PLAYERS] = {0};
static int turbo_map[] = { -1,-1,-1,-1,-1,-1,-1,-1, 1, 0,-1,-1,-1,-1,-1 };
static int turbo_map_alt[] = { -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 1, 0 };
int *turbo_map_selected = (!turbo_toggle_alt ? turbo_map : turbo_map_alt);
static unsigned map[] = {
RETRO_DEVICE_ID_JOYPAD_A,
RETRO_DEVICE_ID_JOYPAD_B,
RETRO_DEVICE_ID_JOYPAD_SELECT,
RETRO_DEVICE_ID_JOYPAD_START,
RETRO_DEVICE_ID_JOYPAD_UP,
RETRO_DEVICE_ID_JOYPAD_RIGHT,
RETRO_DEVICE_ID_JOYPAD_DOWN,
RETRO_DEVICE_ID_JOYPAD_LEFT,
RETRO_DEVICE_ID_JOYPAD_Y,
RETRO_DEVICE_ID_JOYPAD_X,
RETRO_DEVICE_ID_JOYPAD_L,
RETRO_DEVICE_ID_JOYPAD_R,
RETRO_DEVICE_ID_JOYPAD_L2,
RETRO_DEVICE_ID_JOYPAD_L3,
RETRO_DEVICE_ID_JOYPAD_R3
};
for (j = 0; j < MAX_PLAYERS; j++)
{
if (libretro_supports_bitmasks)
joy_bits[j] = input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK);
else
{
for (i = 0; i < (RETRO_DEVICE_ID_JOYPAD_R3+1); i++)
joy_bits[j] |= input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, i) ? (1 << i) : 0;
}
}
for (unsigned j = 0; j < MAX_PLAYERS; j++)
{
switch (input_type[j])
{
case RETRO_DEVICE_JOYPAD:
{
uint16_t input_state = 0;
// read normal inputs
for (unsigned i = 0; i < MAX_BUTTONS; i++)
{
input_state |= (joy_bits[j] & (1 << map[i])) ? (1 << i) : 0;
// disable soft reset
if (disable_softreset == true)
if ((input_state & 0xC) == 0xC) input_state &= ~0xC;
// handle turbo buttons
if (turbo_enable[j][i] == 1) // Check whether a given button is turbo-capable
{
if (input_state & (1 << i))
{
if (turbo_counter[j][i] < 2) // Some PCE games needs 2 frames to react to button presses, so
input_state |= 1 << i; // trigger turbo button at counter 0 and 1
else
input_state &= ~(1 << i);
turbo_counter[j][i]++; // Counter is incremented by 1
if (turbo_counter[j][i] > Turbo_Delay) // When the counter exceeds turbo delay, reset counter to zero
turbo_counter[j][i] = 0;
}
else
turbo_counter[j][i] = 0; // Reset counter if button is not pressed.
}
else
turbo_counter[j][i] = 0; // Reset counter if button is not pressed.
// handle 2/6 button mode switching
if (turbo_map_selected[i] != -1 && Turbo_Toggling && !AVPad6Enabled[j])
{
if (input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, map[i]))
{
if (turbo_toggle_down[j][i] == 0)
{
turbo_toggle_down[j][i] = 1;
turbo_enable[j][turbo_map_selected[i]] = turbo_enable[j][turbo_map_selected[i]] ^ 1;
MDFN_DispMessage("Pad %i Button %s Turbo %s", j + 1,
i == (!turbo_toggle_alt ? 9 : 14) ? "I" : "II",
turbo_enable[j][turbo_map_selected[i]] ? "ON" : "OFF" );
}
}
else turbo_toggle_down[j][i] = 0;
}
}
// Input data must be little endian.
input_buf[j][0] = (input_state >> 0) & 0xff;
input_buf[j][1] = (input_state >> 8) & 0xff;
} break;
case RETRO_DEVICE_MOUSE:
{
int16_t raw_x = input_state_cb(j, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X);
int16_t raw_y = input_state_cb(j, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y);
int16_t x = (int16_t)roundf((float)raw_x * mouse_sensitivity);
int16_t y = (int16_t)roundf((float)raw_y * mouse_sensitivity);
input_buf[j][0] = (x >> 0) & 0xff;
input_buf[j][1] = (x >> 8) & 0xff;
input_buf[j][2] = (y >> 0) & 0xff;
input_buf[j][3] = (y >> 8) & 0xff;
input_buf[j][4] = 0;
// left mouse button
if (input_state_cb(j, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT))
input_buf[j][4] |= (1 << 0);
// right mouse button
if (input_state_cb(j, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT))
input_buf[j][4] |= (1 << 1);
// select
if (input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT))
input_buf[j][4] |= (1 << 2);
// start
if (input_state_cb(j, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START) ||
input_state_cb(j, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE))
input_buf[j][4] |= (1 << 3);
} break;
} // case
}
}
void update_geometry(unsigned width, unsigned height)
{
struct retro_system_av_info system_av_info;
system_av_info.geometry.base_width = width;
system_av_info.geometry.base_height = height;
system_av_info.geometry.max_width = MEDNAFEN_CORE_GEOMETRY_MAX_W;
system_av_info.geometry.max_height = MEDNAFEN_CORE_GEOMETRY_MAX_H;
system_av_info.geometry.aspect_ratio = MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO * ((float) MEDNAFEN_CORE_GEOMETRY_BASE_H / height);
environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &system_av_info);
}
void retro_run(void)
{
static bool last_palette_format;
EmulateSpecStruct spec;
bool resolution_changed = false;
int skip_frame = 0;
input_poll_cb();
update_input();
/* Check whether current frame should
* be skipped
* > Note: Cannot skip the first frame,
* since we need at least one rendered
* frame in order to set initial (valid)
* width/height values for the video_cb
* callback */
if ((frameskip_type > 0) &&
retro_audio_buff_active &&
video_frames)
{
switch (frameskip_type)
{
case 1: /* auto */
skip_frame = retro_audio_buff_underrun ? 1 : 0;
break;
case 2: /* manual */
skip_frame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
break;
default:
skip_frame = 0;
break;
}
if (!skip_frame ||
(frameskip_counter >= FRAMESKIP_MAX))
{
skip_frame = 0;
frameskip_counter = 0;
}
else
frameskip_counter++;
}
/* If frameskip settings have changed, update
* frontend audio latency */
if (update_audio_latency)
{
environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
&audio_latency);
update_audio_latency = false;
}
spec.surface = surf;
spec.VideoFormatChanged = false;
spec.DisplayRect.x = 0;
spec.DisplayRect.y = 0;
spec.DisplayRect.w = 0;
spec.DisplayRect.h = 0;
spec.CustomPalette = use_palette ? composite_palette : NULL;
spec.CustomPaletteNumEntries = use_palette ? 512 : 0;
spec.InterlaceOn = false;
spec.InterlaceField = false;
spec.skip = skip_frame;
spec.SoundBuf = sound_buf;
spec.SoundBufSize = 0;
if (last_palette_format != use_palette)
{
spec.VideoFormatChanged = true;
last_palette_format = use_palette;
}
Emulate(&spec);
if (skip_frame)
video_cb(NULL, video_width, video_height, FB_WIDTH * 2);
else
{
if (video_width != spec.DisplayRect.w || video_height != spec.DisplayRect.h)
resolution_changed = true;
video_width = spec.DisplayRect.w;
video_height = spec.DisplayRect.h;
video_cb(surf->pixels + surf->pitch * spec.DisplayRect.y, video_width, video_height, FB_WIDTH * 2);
}
audio_batch_cb(spec.SoundBuf, spec.SoundBufSize);
bool updated = false;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
{
unsigned c;
check_variables(false);
if(PCE_IsCD){
psg->SetVolume(0.678 * setting_pce_fast_cdpsgvolume / 100);
}
for (c = 0; c < 6; c++)
psg->SetChannelUserVolume(c, psg_channels_volume[c]);
update_geometry(video_width, video_height);
}
else if (resolution_changed)
update_geometry(video_width, video_height);
video_frames++;
audio_frames += spec.SoundBufSize;
}
void retro_get_system_info(struct retro_system_info *info)
{
memset(info, 0, sizeof(*info));
info->library_name = MEDNAFEN_CORE_NAME;
#ifndef GIT_VERSION
#define GIT_VERSION ""
#endif
info->library_version = MEDNAFEN_CORE_VERSION GIT_VERSION;
info->need_fullpath = true;
info->valid_extensions = MEDNAFEN_CORE_EXTENSIONS;
info->block_extract = false;
}
void retro_get_system_av_info(struct retro_system_av_info *info)
{
memset(info, 0, sizeof(*info));
info->timing.fps = MEDNAFEN_CORE_TIMING_FPS;
info->timing.sample_rate = 44100;
info->geometry.base_width = MEDNAFEN_CORE_GEOMETRY_BASE_W;
info->geometry.base_height = MEDNAFEN_CORE_GEOMETRY_BASE_H;
info->geometry.max_width = MEDNAFEN_CORE_GEOMETRY_MAX_W;
info->geometry.max_height = MEDNAFEN_CORE_GEOMETRY_MAX_H;
info->geometry.aspect_ratio = MEDNAFEN_CORE_GEOMETRY_ASPECT_RATIO;
}
void retro_deinit(void)
{
if (surf)
{
if (surf->pixels)
free(surf->pixels);
surf->pixels = NULL;
free(surf);
}
surf = NULL;
if (log_cb)
{
log_cb(RETRO_LOG_INFO, "[%s]: Samples / Frame: %.5f\n",
MEDNAFEN_CORE_NAME, (double)audio_frames / video_frames);
log_cb(RETRO_LOG_INFO, "[%s]: Estimated FPS: %.5f\n",
MEDNAFEN_CORE_NAME, (double)video_frames * 44100 / audio_frames);
}
libretro_supports_option_categories = false;
libretro_supports_bitmasks = false;
}
unsigned retro_get_region(void)
{
return RETRO_REGION_NTSC; // FIXME: Regions for other cores.
}
unsigned retro_api_version(void)
{
return RETRO_API_VERSION;
}
void retro_set_controller_port_device(unsigned in_port, unsigned device)
{
if (in_port > 4)
return;
// Filter out other device types, otherwise we can
// accidentally skip devices like joypad+analog.
device &= RETRO_DEVICE_JOYPAD | RETRO_DEVICE_MOUSE;
switch(device)
{
case RETRO_DEVICE_JOYPAD:
input_type[in_port] = RETRO_DEVICE_JOYPAD;
PCEINPUT_SetInput(in_port, "gamepad", (uint8_t*)&input_buf[in_port][0]);
break;
case RETRO_DEVICE_MOUSE:
input_type[in_port] = RETRO_DEVICE_MOUSE;
PCEINPUT_SetInput(in_port, "mouse", (uint8_t*)&input_buf[in_port][0]);
break;
default:
input_type[in_port] = RETRO_DEVICE_NONE;
break;
}
}
void retro_set_environment(retro_environment_t cb)
{
struct retro_vfs_interface_info vfs_iface_info;
environ_cb = cb;
static const struct retro_controller_description pads[] = {
{ "PCE Joypad", RETRO_DEVICE_JOYPAD },
{ "Mouse", RETRO_DEVICE_MOUSE },
};
static const struct retro_controller_info ports[] = {
{ pads, 2 },
{ pads, 2 },
{ pads, 2 },
{ pads, 2 },
{ pads, 2 },
{ 0 },
};
static const struct retro_system_content_info_override content_overrides[] = {
{
"pce", /* extensions */
false, /* need_fullpath */
false /* persistent_data */
},
{ NULL, false, false }
};
libretro_supports_option_categories = false;
libretro_set_core_options(environ_cb,
&libretro_supports_option_categories);
environ_cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
environ_cb(RETRO_ENVIRONMENT_SET_CONTENT_INFO_OVERRIDE, (void*)content_overrides);
vfs_iface_info.required_interface_version = 1;
vfs_iface_info.iface = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
filestream_vfs_init(&vfs_iface_info);
}
void retro_set_audio_sample(retro_audio_sample_t cb)
{
audio_cb = cb;
}
void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb)
{
audio_batch_cb = cb;
}
void retro_set_input_poll(retro_input_poll_t cb)
{
input_poll_cb = cb;
}
void retro_set_input_state(retro_input_state_t cb)
{
input_state_cb = cb;
}
void retro_set_video_refresh(retro_video_refresh_t cb)
{
video_cb = cb;
}
size_t retro_serialize_size(void)
{
StateMem st;
st.data = NULL;
st.data_frontend = NULL;
st.loc = 0;
st.len = 0;
st.malloced = 0;
st.initial_malloc = 0;
if (!MDFNSS_SaveSM(&st, 0, 0, NULL, NULL, NULL))
return 0;
free(st.data);
return st.len;
}
bool retro_serialize(void *data, size_t size)
{
StateMem st;
bool ret = false;
st.data_frontend = (uint8_t *)data;
st.data = st.data_frontend;
st.loc = 0;
st.len = 0;
st.malloced = size;
st.initial_malloc = 0;
/* MDFNSS_SaveSM will malloc separate memory for st.data to complete
* the save if the passed-in size is too small */
ret = MDFNSS_SaveSM(&st, 0, 0, NULL, NULL, NULL);
if (st.data != st.data_frontend)
{
log_cb(RETRO_LOG_WARN, "Save state size has increased\n");
free(st.data);
ret = false;
}
return ret;
}
bool retro_unserialize(const void *data, size_t size)
{
StateMem st;
st.data_frontend = (uint8_t *)data;
st.data = st.data_frontend;
st.loc = 0;
st.len = size;
st.malloced = 0;
st.initial_malloc = 0;
return MDFNSS_LoadSM(&st, 0, 0);
}
void *retro_get_memory_data(unsigned type)
{
switch (type)
{
case RETRO_MEMORY_SAVE_RAM:
if (IsPopulous)
return (uint8_t*)(ROMSpace + 0x40 * 8192);
return (uint8_t*)SaveRAM;
case RETRO_MEMORY_SYSTEM_RAM:
return BaseRAM;
default:
break;
}
return NULL;
}
size_t retro_get_memory_size(unsigned type)
{
switch (type)
{
case RETRO_MEMORY_SAVE_RAM:
if (IsPopulous)
return 32768;
return 2048;
case RETRO_MEMORY_SYSTEM_RAM:
return 8192;
default:
break;
}
return 0;
}
void retro_cheat_reset(void)
{
MDFN_FlushGameCheats(0);
}
void retro_cheat_set(unsigned index, bool enabled, const char *code)
{
char name[256];
char temp[256];
char *codepart;
if (code == NULL)
return;
sprintf(name, "N/A");
strcpy(temp, code);
codepart = strtok(temp, "+,;._ ");
while (codepart)
{
// Cheat references are based on
// https://gamehacking.org/system/pce
// https://gamehacking.org/system/pcd
//
// accepts 1Fxxxx:xx raw format (ram)
// accepts 10xxxx:xx raw format (cd-ram)
// accepts F8xxxx:xx physical address format (ram)
if ((strlen(codepart) == 9) && (codepart[6]==':'))
{
uint32 a;
uint64 v;
codepart[6] = '\0';
a = strtoul(codepart, NULL, 16);
v = strtoul(codepart + 7, NULL, 16);
// RAM region (0x1F0000 - 0x1F2000)
//translate physical address to raw address format
if ((a & 0xFFE000) == 0xF82000)
{
a &= 0x1FFF;
a |= 0x1F0000;
}
// CD-RAM region (0x100000 - 0x110000)
// translate physical address to raw address format
// this is just guess-work and assumed the target address is always 0x10Axxx,
// better use raw formats if possible
if ((a & 0xFFC000) == 0x80C000)
{
a &= 0x1FFF;
a |= 0x10A000;
}
// only accept codes in of valid address range
// raw address = 0x1F0000 - 0x1F1FFF or physical address 0xF82xxx - 0xF83xxx (RAM)
// raw address = 0x0D0000 - 0x10FFFF (SYSTEM CARD RAM / CD-RAM)
if (((a >= 0x1F0000) && (a < 0x1F2000)) || // main RAM
((a >= 0x100000) && (a < 0x110000)) || // CD RAM
((a >= 0x00D000) && (a < 0x10FFFF))) // System Card RAM
{
if (!MDFNI_AddCheat(name, a, v, 0, 'R', 1, 0))
log_cb(RETRO_LOG_DEBUG, "Failed to set code: '%s:%02x'\n", codepart,v);
else
log_cb(RETRO_LOG_DEBUG, "Code set: '%s:%02x'\n", codepart,v);
}
else
log_cb(RETRO_LOG_DEBUG, "Invalid or unknown code: '%s:%02x'\n", codepart,v);
/* log_cb(RETRO_LOG_DEBUG, "address=%08x v=%02x\n", a, v); */
}
else
log_cb(RETRO_LOG_DEBUG, "Invalid or unknown code: '%s'\n", codepart);
codepart = strtok(NULL,"+,;._ ");
}
}
extern "C" void MDFN_DispMessage(const char *format, ...)
{
va_list ap;
struct retro_message msg;
const char *strc = NULL;
char *str = (char*)malloc(4096 * sizeof(char));
va_start(ap,format);
vsnprintf(str, 4096, format,ap);
va_end(ap);
strc = str;
msg.frames = 180;
msg.msg = strc;
environ_cb(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
free(str);
}
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