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1 | // This is part of Pico Library |
2 | |
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3 | // (c) Copyright 2007 notaz, All rights reserved. |
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4 | // Free for non-commercial use. |
5 | |
6 | // For commercial use, separate licencing terms must be obtained. |
7 | |
8 | |
9 | #include "../PicoInt.h" |
10 | |
11 | // ym2612 |
12 | #include "../sound/ym2612.h" |
13 | |
14 | // sn76496 |
15 | extern int *sn76496_regs; |
16 | |
17 | |
18 | typedef enum { |
19 | CHUNK_M68K = 1, |
20 | CHUNK_RAM, |
21 | CHUNK_VRAM, |
22 | CHUNK_ZRAM, |
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23 | CHUNK_CRAM, // 5 |
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24 | CHUNK_VSRAM, |
25 | CHUNK_MISC, |
26 | CHUNK_VIDEO, |
27 | CHUNK_Z80, |
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28 | CHUNK_PSG, // 10 |
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29 | CHUNK_FM, |
30 | // CD stuff |
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31 | CHUNK_S68K, |
32 | CHUNK_PRG_RAM, |
33 | CHUNK_WORD_RAM, |
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34 | CHUNK_PCM_RAM, // 15 |
35 | CHUNK_BRAM, |
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36 | CHUNK_GA_REGS, |
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37 | CHUNK_PCM, |
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38 | CHUNK_CDC, |
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39 | CHUNK_CDD, // 20 |
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40 | CHUNK_SCD, |
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41 | CHUNK_RC, |
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42 | CHUNK_MISC_CD, |
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43 | } chunk_name_e; |
44 | |
45 | |
46 | static int write_chunk(chunk_name_e name, int len, void *data, void *file) |
47 | { |
48 | size_t bwritten = 0; |
49 | bwritten += areaWrite(&name, 1, 1, file); |
50 | bwritten += areaWrite(&len, 1, 4, file); |
51 | bwritten += areaWrite(data, 1, len, file); |
52 | |
53 | return (bwritten == len + 4 + 1); |
54 | } |
55 | |
56 | |
57 | #define CHECKED_WRITE(name,len,data) \ |
58 | if (!write_chunk(name, len, data, file)) return 1; |
59 | |
60 | #define CHECKED_WRITE_BUFF(name,buff) \ |
61 | if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; |
62 | |
63 | int PicoCdSaveState(void *file) |
64 | { |
65 | unsigned char buff[0x60]; |
66 | void *ym2612_regs = YM2612GetRegs(); |
67 | |
68 | areaWrite("PicoSMCD", 1, 8, file); |
69 | areaWrite(&PicoVer, 1, 4, file); |
70 | |
71 | memset(buff, 0, sizeof(buff)); |
72 | PicoAreaPackCpu(buff, 0); |
73 | CHECKED_WRITE_BUFF(CHUNK_M68K, buff); |
74 | CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram); |
75 | CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram); |
76 | CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram); |
77 | CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram); |
78 | CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram); |
79 | CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m); |
80 | CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video); |
81 | if(PicoOpt&7) { |
82 | memset(buff, 0, sizeof(buff)); |
83 | z80_pack(buff); |
84 | CHECKED_WRITE_BUFF(CHUNK_Z80, buff); |
85 | } |
86 | if(PicoOpt&3) |
87 | CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs); |
88 | if(PicoOpt&1) |
89 | CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs); |
90 | |
91 | // TODO: cd stuff |
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92 | if (PicoMCD & 1) |
93 | { |
94 | Pico_mcd->m.audio_offset = mp3_get_offset(); |
95 | memset(buff, 0, sizeof(buff)); |
96 | PicoAreaPackCpu(buff, 1); |
97 | |
98 | CHECKED_WRITE_BUFF(CHUNK_S68K, buff); |
99 | CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram); |
100 | CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram); // in 2M format |
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101 | CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram); |
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102 | CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram); |
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103 | CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs |
104 | CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm); |
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105 | CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd); |
106 | CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc); |
107 | CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd); |
108 | CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp); |
109 | CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m); |
110 | } |
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111 | |
112 | return 0; |
113 | } |
114 | |
115 | static int g_read_offs = 0; |
116 | |
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117 | #define R_ERROR_RETURN(error) \ |
118 | { \ |
119 | printf("PicoCdLoadState @ %x: " error "\n", g_read_offs); \ |
120 | return 1; \ |
121 | } |
122 | |
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123 | // when is eof really set? |
124 | #define CHECKED_READ(len,data) \ |
125 | if (areaRead(data, 1, len, file) != len) { \ |
126 | if (len == 1 && areaEof(file)) return 0; \ |
127 | R_ERROR_RETURN("areaRead: premature EOF\n"); \ |
128 | return 1; \ |
129 | } \ |
130 | g_read_offs += len; |
131 | |
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132 | #define CHECKED_READ2(len2,data) \ |
133 | if (len2 != len) R_ERROR_RETURN("unexpected len, wanted " #len2); \ |
134 | CHECKED_READ(len2, data) |
135 | |
136 | #define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff); |
137 | |
138 | int PicoCdLoadState(void *file) |
139 | { |
140 | unsigned char buff[0x60]; |
141 | int ver, len; |
142 | void *ym2612_regs = YM2612GetRegs(); |
143 | |
144 | g_read_offs = 0; |
145 | CHECKED_READ(8, buff); |
146 | if (strncmp((char *)buff, "PicoSMCD", 8)) R_ERROR_RETURN("bad header"); |
147 | CHECKED_READ(4, &ver); |
148 | |
149 | while (!areaEof(file)) |
150 | { |
151 | CHECKED_READ(1, buff); |
152 | CHECKED_READ(4, &len); |
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153 | if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length"); |
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154 | if (buff[0] > CHUNK_FM && !(PicoMCD & 1)) R_ERROR_RETURN("cd chunk in non CD state?"); |
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155 | |
156 | switch (buff[0]) |
157 | { |
158 | case CHUNK_M68K: |
159 | CHECKED_READ_BUFF(buff); |
160 | PicoAreaUnpackCpu(buff, 0); |
161 | break; |
162 | |
163 | case CHUNK_Z80: |
164 | CHECKED_READ_BUFF(buff); |
165 | z80_unpack(buff); |
166 | break; |
167 | |
168 | case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break; |
169 | case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break; |
170 | case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break; |
171 | case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break; |
172 | case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break; |
173 | case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break; |
174 | case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break; |
175 | case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break; |
176 | case CHUNK_FM: |
177 | CHECKED_READ2(0x200+4, ym2612_regs); |
178 | YM2612PicoStateLoad(); |
179 | break; |
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180 | |
181 | // cd stuff |
182 | case CHUNK_S68K: |
183 | CHECKED_READ_BUFF(buff); |
184 | PicoAreaUnpackCpu(buff, 1); |
185 | break; |
186 | |
187 | case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break; |
188 | case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram); break; |
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189 | case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break; |
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190 | case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break; |
191 | case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break; |
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192 | case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break; |
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193 | case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break; |
194 | case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break; |
195 | case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break; |
196 | case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break; |
197 | |
198 | case CHUNK_MISC_CD: |
199 | CHECKED_READ_BUFF(Pico_mcd->m); |
200 | mp3_start_play(Pico_mcd->TOC.Tracks[Pico_mcd->m.audio_track].F, Pico_mcd->m.audio_offset); |
201 | break; |
202 | |
203 | default: |
204 | printf("skipping unknown chunk %i of size %i\n", buff[0], len); |
205 | areaSeek(file, len, SEEK_CUR); |
206 | break; |
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207 | } |
208 | } |
209 | |
210 | return 0; |
211 | } |
212 | |