X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=Pico%2Fcd%2FArea.c;h=aba08e3b46769972cd62f9638d85dc8765be71f7;hb=b542be4686241c9e0722ff8e452980f9ac2b4d7c;hp=a4c2b3683daf24e921f6fad5d407046059c02e4b;hpb=4f265db77684ec33f9533e7c76734498df03bba4;p=picodrive.git

diff --git a/Pico/cd/Area.c b/Pico/cd/Area.c
index a4c2b36..aba08e3 100644
--- a/Pico/cd/Area.c
+++ b/Pico/cd/Area.c
@@ -1,9 +1,5 @@
-// This is part of Pico Library
-
-// (c) Copyright 2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
+// Savestate handling for emulated Sega/Mega CD machine.
+// (c) Copyright 2007, Grazvydas "notaz" Ignotas
 
 
 #include "../PicoInt.h"
@@ -14,6 +10,8 @@
 // sn76496
 extern int *sn76496_regs;
 
+void (*PicoStateProgressCB)(const char *str) = 0;
+
 
 typedef enum {
 	CHUNK_M68K = 1,
@@ -43,6 +41,35 @@ typedef enum {
 } chunk_name_e;
 
 
+static char *chunk_names[] = {
+	"INVALID!",
+	"Saving.. M68K state",
+	"Saving.. RAM",
+	"Saving.. VRAM",
+	"Saving.. ZRAM",
+	"Saving.. CRAM",	// 5
+	"Saving.. VSRAM",
+	"Saving.. emu state",
+	"Saving.. VIDEO",
+	"Saving.. Z80 state",
+	"Saving.. PSG",		// 10
+	"Saving.. FM",
+	// CD stuff
+	"Saving.. S68K state",
+	"Saving.. PRG_RAM",
+	"Saving.. WORD_RAM",
+	"Saving.. PCM_RAM",	// 15
+	"Saving.. BRAM",
+	"Saving.. GATE ARRAY regs",
+	"Saving.. PCM state",
+	"Saving.. CDC",
+	"Saving.. CDD",		// 20
+	"Saving.. SCD",
+	"Saving.. GFX chip",
+	"Saving.. MCD state",
+};
+
+
 static int write_chunk(chunk_name_e name, int len, void *data, void *file)
 {
 	size_t bwritten = 0;
@@ -55,12 +82,14 @@ static int write_chunk(chunk_name_e name, int len, void *data, void *file)
 
 
 #define CHECKED_WRITE(name,len,data) \
+	if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
 	if (!write_chunk(name, len, data, file)) return 1;
 
 #define CHECKED_WRITE_BUFF(name,buff) \
+	if (PicoStateProgressCB) PicoStateProgressCB(chunk_names[name]); \
 	if (!write_chunk(name, sizeof(buff), &buff, file)) return 1;
 
-int PicoCdSaveState(void *file)
+PICO_INTERNAL int PicoCdSaveState(void *file)
 {
 	unsigned char buff[0x60];
 	void *ym2612_regs = YM2612GetRegs();
@@ -88,16 +117,18 @@ int PicoCdSaveState(void *file)
 	if(PicoOpt&1)
 		CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);
 
-	// TODO: cd stuff
 	if (PicoMCD & 1)
 	{
 		Pico_mcd->m.audio_offset = mp3_get_offset();
 		memset(buff, 0, sizeof(buff));
 		PicoAreaPackCpu(buff, 1);
+		if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
+			wram_1M_to_2M(Pico_mcd->word_ram2M);
+        	Pico_mcd->m.hint_vector = *(unsigned short *)(Pico_mcd->bios + 0x72);
 
 		CHECKED_WRITE_BUFF(CHUNK_S68K,     buff);
 		CHECKED_WRITE_BUFF(CHUNK_PRG_RAM,  Pico_mcd->prg_ram);
-		CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram); // in 2M format
+		CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format
 		CHECKED_WRITE_BUFF(CHUNK_PCM_RAM,  Pico_mcd->pcm_ram);
 		CHECKED_WRITE_BUFF(CHUNK_BRAM,     Pico_mcd->bram);
 		CHECKED_WRITE_BUFF(CHUNK_GA_REGS,  Pico_mcd->s68k_regs); // GA regs, not CPU regs
@@ -107,6 +138,9 @@ int PicoCdSaveState(void *file)
 		CHECKED_WRITE_BUFF(CHUNK_SCD,      Pico_mcd->scd);
 		CHECKED_WRITE_BUFF(CHUNK_RC,       Pico_mcd->rot_comp);
 		CHECKED_WRITE_BUFF(CHUNK_MISC_CD,  Pico_mcd->m);
+
+		if (Pico_mcd->s68k_regs[3]&4) // convert back
+			wram_2M_to_1M(Pico_mcd->word_ram2M);
 	}
 
 	return 0;
@@ -130,12 +164,16 @@ static int g_read_offs = 0;
 	g_read_offs += len;
 
 #define CHECKED_READ2(len2,data) \
-	if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \
-	CHECKED_READ(len2, data)
+	if (len2 != len) { \
+		printf("unexpected len %i, wanted %i (%s)", len, len2, #len2); \
+		if (len > len2) R_ERROR_RETURN("failed."); \
+		/* else read anyway and hope for the best.. */ \
+	} \
+	CHECKED_READ(len, data)
 
 #define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);
 
-int PicoCdLoadState(void *file)
+PICO_INTERNAL int PicoCdLoadState(void *file)
 {
 	unsigned char buff[0x60];
 	int ver, len;
@@ -185,7 +223,7 @@ int PicoCdLoadState(void *file)
 				break;
 
 			case CHUNK_PRG_RAM:	CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;
-			case CHUNK_WORD_RAM:	CHECKED_READ_BUFF(Pico_mcd->word_ram); break;
+			case CHUNK_WORD_RAM:	CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;
 			case CHUNK_PCM_RAM:	CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;
 			case CHUNK_BRAM:	CHECKED_READ_BUFF(Pico_mcd->bram); break;
 			case CHUNK_GA_REGS:	CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;
@@ -194,14 +232,56 @@ int PicoCdLoadState(void *file)
 			case CHUNK_CDC:		CHECKED_READ_BUFF(Pico_mcd->cdc); break;
 			case CHUNK_SCD:		CHECKED_READ_BUFF(Pico_mcd->scd); break;
 			case CHUNK_RC:		CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;
+			case CHUNK_MISC_CD:	CHECKED_READ_BUFF(Pico_mcd->m); break;
 
-			case CHUNK_MISC_CD:
-				CHECKED_READ_BUFF(Pico_mcd->m);
-				mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
+			default:
+				printf("PicoCdLoadState: skipping unknown chunk %i of size %i\n", buff[0], len);
+				areaSeek(file, len, SEEK_CUR);
 				break;
+		}
+	}
+
+	/* after load events */
+	if (Pico_mcd->s68k_regs[3]&4) // 1M mode?
+		wram_2M_to_1M(Pico_mcd->word_ram2M);
+	PicoMemResetCD(Pico_mcd->s68k_regs[3]);
+#ifdef _ASM_CD_MEMORY_C
+	if (Pico_mcd->s68k_regs[3]&4)
+		PicoMemResetCDdecode(Pico_mcd->s68k_regs[3]);
+#endif
+	if (Pico_mcd->m.audio_track > 0 && Pico_mcd->m.audio_track < Pico_mcd->TOC.Last_Track)
+		mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset);
+	// restore hint vector
+        *(unsigned short *)(Pico_mcd->bios + 0x72) = Pico_mcd->m.hint_vector;
+
+	return 0;
+}
 
+
+int PicoCdLoadStateGfx(void *file)
+{
+	int ver, len, found = 0;
+	char buff[8];
+
+	g_read_offs = 0;
+	CHECKED_READ(8, buff);
+	if (strncmp(buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header");
+	CHECKED_READ(4, &ver);
+
+	while (!areaEof(file) && found < 4)
+	{
+		CHECKED_READ(1, buff);
+		CHECKED_READ(4, &len);
+		if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");
+		if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?");
+
+		switch (buff[0])
+		{
+			case CHUNK_VRAM:  CHECKED_READ_BUFF(Pico.vram);  found++; break;
+			case CHUNK_CRAM:  CHECKED_READ_BUFF(Pico.cram);  found++; break;
+			case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;
+			case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;
 			default:
-				printf("skipping unknown chunk %i of size %i\n", buff[0], len);
 				areaSeek(file, len, SEEK_CUR);
 				break;
 		}
@@ -210,3 +290,4 @@ int PicoCdLoadState(void *file)
 	return 0;
 }
 
+