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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 716 | lvd | 1 | #include "std.h" |
| 2 | |||
| 3 | #include "emul.h" |
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| 4 | #include "vars.h" |
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| 5 | #include "bass.h" |
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| 6 | #include "snd_bass.h" |
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| 7 | #include "gshle.h" |
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| 8 | #include "gs.h" |
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| 9 | #include "sound.h" |
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| 10 | |||
| 11 | #ifdef MOD_GSBASS |
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| 12 | void GSHLE::set_busy(unsigned char newval) |
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| 13 | { |
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| 14 | busy = chan[0].busy = chan[1].busy = chan[2].busy = chan[3].busy = newval; |
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| 15 | } |
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| 16 | |||
| 17 | void GSHLE::reset() |
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| 18 | { |
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| 19 | fxvol = modvol = 0x3F; |
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| 20 | make_gs_volume(fxvol); |
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| 21 | to_ptr = data_in; mod_playing = 0; |
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| 22 | used = 0; mod = 0; modsize = 0; set_busy(0); |
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| 23 | resetmod(); total_fx = 1; |
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| 24 | memset(sample, 0, sizeof sample); |
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| 25 | memset(chan, 0, sizeof chan); |
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| 26 | out(0xBB, 0x23); // send 'get pages' command |
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| 27 | } |
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| 28 | |||
| 29 | void GSHLE::applyconfig() |
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| 30 | { |
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| 31 | double period = 6848, mx = 0.943874312682; // mx=1/root(2,12) |
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| 32 | double basefq = 7093789.0/2; |
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| 33 | int i; //Alone Coder 0.36.7 |
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| 34 | for (/*int*/ i = 0; i < 96; i++, period *= mx) |
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| 35 | note2rate[i] = (unsigned)(basefq/period); |
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| 36 | for (; i < 0x100; i++) note2rate[i] = note2rate[i-1]; |
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| 37 | if (BASS::Bass) |
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| 38 | setmodvol(modvol); |
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| 39 | } |
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| 40 | |||
| 41 | unsigned char GSHLE::in(unsigned char port) |
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| 42 | { |
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| 43 | if (port == 0xBB) return gsstat; |
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| 44 | if (!resptr) return 0xFF; // no data available |
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| 45 | unsigned char byte = *resptr; |
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| 46 | if (resmode) resptr++, resmode--; // goto next byte |
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| 47 | return byte; |
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| 48 | } |
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| 49 | |||
| 50 | void GSHLE::out(unsigned char port, unsigned char byte) |
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| 51 | { |
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| 52 | if (port == 0xB3) { |
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| 53 | if (!load_stream) { |
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| 54 | *to_ptr = byte; |
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| 55 | if (resmod2) to_ptr++, resmod2--; |
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| 56 | if (!resmod2) { |
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| 57 | if ((gscmd & 0xF8) == 0x88) start_fx(data_in[0], gscmd & 3, 0xFF, data_in[1]); |
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| 58 | if ((gscmd & 0xF8) == 0x90) start_fx(data_in[0], gscmd & 3, data_in[1], 0xFF); |
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| 59 | if ((gscmd & 0xF8) == 0x98) start_fx(data_in[0], gscmd & 3, data_in[2], data_in[1]); |
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| 60 | to_ptr = data_in; |
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| 61 | } |
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| 62 | } else { |
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| 63 | if (load_stream == 4) { // covox |
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| 64 | flush_dig_snd(); |
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| 65 | covFB_vol = byte*conf.sound.gs_vol/0x100; |
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| 66 | return; |
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| 67 | } |
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| 68 | streamstart[streamsize++] = byte; |
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| 69 | if (load_stream == 1) loadmod = 1; |
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| 70 | else loadfx = cur_fx; |
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| 71 | } |
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| 72 | return; |
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| 73 | } |
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| 74 | // else command |
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| 75 | unsigned i; |
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| 76 | gsstat = 0x7E; resmode = 0; // default - 1 byte ready |
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| 77 | resptr = gstmp; to_ptr = data_in; resmod2 = 0; |
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| 78 | gscmd = byte; |
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| 79 | if (load_stream == 4) load_stream = 0; // close covox mode |
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| 80 | switch (byte) { |
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| 81 | case 0x0E: // LPT covox |
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| 82 | load_stream = 4; |
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| 83 | break; |
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| 84 | case 0xF3: case 0xF4: // reset |
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| 85 | reset_gs(); |
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| 86 | break; |
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| 87 | case 0xF5: |
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| 88 | set_busy(1); break; |
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| 89 | case 0xF6: |
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| 90 | set_busy(0); break; |
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| 91 | case 0x20: // get total memory |
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| 92 | *(unsigned*)gstmp = conf.gs_ramsize*1024-32768-16384; |
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| 93 | resmode = 2; gsstat = 0xFE; |
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| 94 | break; |
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| 95 | case 0x21: // get free memory |
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| 96 | *(unsigned*)gstmp = (conf.gs_ramsize*1024-32768-16384) - used; |
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| 97 | resmode = 2; gsstat = 0xFE; |
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| 98 | break; |
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| 99 | case 0x23: // get pages |
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| 100 | *gstmp = ((conf.gs_ramsize*1024)/32768)-1; |
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| 101 | gsstat = 0xFE; |
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| 102 | break; |
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| 103 | case 0x2A: // set module vol |
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| 104 | case 0x35: |
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| 105 | *gstmp = modvol; |
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| 106 | modvol = *data_in; |
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| 107 | setmodvol(modvol); |
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| 108 | break; |
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| 109 | case 0x2B: // set FX vol |
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| 110 | case 0x3D: |
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| 111 | *gstmp = fxvol; |
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| 112 | fxvol = *data_in; |
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| 113 | make_gs_volume(fxvol); |
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| 114 | break; |
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| 115 | case 0x2E: // set FX |
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| 116 | cur_fx = *data_in; |
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| 117 | break; |
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| 118 | case 0x30: // load MOD |
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| 119 | // if (mod) break; |
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| 120 | reset_gs(); |
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| 121 | streamstart = mod = GSRAM_M + used; |
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| 122 | streamsize = 0; |
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| 123 | *gstmp = 1; load_stream = 1; |
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| 124 | break; |
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| 125 | case 0x31: // play MOD |
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| 126 | restart_mod(0,0); |
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| 127 | break; |
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| 128 | case 0x32: // stop MOD |
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| 129 | mod_playing = 0; |
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| 130 | stop_mod(); |
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| 131 | break; |
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| 132 | case 0x33: // continue MOD |
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| 133 | if (mod) mod_playing = 1, cont_mod(); |
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| 134 | break; |
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| 135 | case 0x36: // data = #FF |
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| 136 | *gstmp = 0xFF; |
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| 137 | break; |
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| 138 | case 0x38: // load FX |
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| 139 | case 0x3E: |
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| 140 | if (total_fx == 64) break; |
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| 141 | cur_fx = *gstmp = total_fx; |
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| 142 | load_stream = (byte == 0x38) ? 2 : 3; |
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| 143 | streamstart = GSRAM_M + used; |
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| 144 | sample[total_fx].start = streamstart; |
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| 145 | streamsize = 0; |
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| 146 | break; |
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| 147 | case 0x39: // play FX |
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| 148 | start_fx(*data_in, 0xFF, 0xFF, 0xFF); |
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| 149 | break; |
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| 150 | case 0x3A: // stop fx |
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| 151 | for (i = 0; i < 4; i++) |
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| 152 | if (*data_in & (1<<i)) chan[i].start = 0; |
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| 153 | break; |
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| 154 | case 0x40: // set note |
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| 155 | sample[cur_fx].note = *data_in; |
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| 156 | break; |
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| 157 | case 0x41: // set vol |
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| 158 | sample[cur_fx].volume = *data_in; |
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| 159 | break; |
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| 160 | case 0x48: // set loop start |
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| 161 | resmod2 = 2; |
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| 162 | *(unsigned char*)&sample[cur_fx].loop = *data_in; |
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| 163 | to_ptr = 1+(unsigned char*)&sample[cur_fx].loop; |
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| 164 | break; |
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| 165 | case 0x49: // set loop end |
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| 166 | resmod2 = 2; |
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| 167 | *(unsigned char*)&sample[cur_fx].end = *data_in; |
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| 168 | to_ptr = 1+(unsigned char*)&sample[cur_fx].end; |
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| 169 | break; |
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| 170 | case 0x60: // get song pos |
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| 171 | *gstmp = (unsigned char)modgetpos(); |
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| 172 | break; |
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| 173 | case 0x61: // get pattern pos |
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| 174 | *gstmp = (unsigned char)(modgetpos() >> 16); |
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| 175 | break; |
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| 176 | case 0x62: // get mixed pos |
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| 177 | i = modgetpos(); |
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| 178 | *gstmp = ((i>>16) & 0x3F) | (i << 6); |
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| 179 | break; |
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| 180 | case 0x63: // get module notes |
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| 181 | resmode = 3; gsstat = 0xFE; |
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| 182 | break; |
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| 183 | case 0x64: // get module vols |
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| 184 | *(unsigned*)gstmp = 0; |
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| 185 | resmode = 3; gsstat = 0xFE; |
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| 186 | break; |
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| 187 | case 0x65: // jmp to pos |
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| 188 | restart_mod(*data_in,0); |
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| 189 | break; |
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| 190 | case 0x80: // direct play 1 |
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| 191 | case 0x81: |
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| 192 | case 0x82: |
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| 193 | case 0x83: |
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| 194 | start_fx(*data_in, byte & 3, 0xFF, 0xFF); |
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| 195 | break; |
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| 196 | case 0x88: // direct play 2 |
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| 197 | case 0x89: |
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| 198 | case 0x8A: |
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| 199 | case 0x8B: |
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| 200 | case 0x90: // direct play 3 |
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| 201 | case 0x91: |
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| 202 | case 0x92: |
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| 203 | case 0x93: |
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| 204 | resmod2 = 1; to_ptr++; |
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| 205 | break; |
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| 206 | case 0x98: // direct play 4 |
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| 207 | case 0x99: |
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| 208 | case 0x9A: |
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| 209 | case 0x9B: |
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| 210 | resmod2 = 2; to_ptr++; |
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| 211 | break; |
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| 212 | |||
| 213 | case 0xD2: // close stream |
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| 214 | if (!load_stream) break; |
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| 215 | // bug?? command #3E loads unsigned samples (REX 1,2) |
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| 216 | // if (load_stream == 3) // unsigned sample -> convert to unsigned |
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| 217 | // for (unsigned ptr = 0; ptr < streamsize; sample[total_fx].start[ptr++] ^= 0x80); |
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| 218 | if (load_stream == 1) { modsize = streamsize, init_mod(); } |
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| 219 | else { |
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| 220 | sample[total_fx].end = streamsize; |
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| 221 | sample[total_fx].loop = 0xFFFFFF; |
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| 222 | sample[total_fx].volume = 0x40; |
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| 223 | sample[total_fx].note = 60; |
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| 224 | //{char fn[200];sprintf(fn,"s-%d.raw",total_fx); FILE*ff=fopen(fn,"wb");fwrite(sample[total_fx].start,1,streamsize,ff);fclose(ff);} |
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| 225 | total_fx++; |
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| 226 | } |
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| 227 | used += streamsize; |
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| 228 | load_stream = 0; |
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| 229 | break; |
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| 230 | |||
| 231 | case 0x00: // reset flags - already done |
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| 232 | case 0x08: |
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| 233 | case 0xD1: // start stream |
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| 234 | break; |
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| 235 | default: |
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| 236 | badgs[byte] = 1; |
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| 237 | break; |
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| 238 | } |
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| 239 | } |
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| 240 | |||
| 241 | void GSHLE::start_fx(unsigned fx, unsigned ch, unsigned char vol, unsigned char note) |
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| 242 | { |
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| 243 | unsigned i; //Alone Coder 0.36.7 |
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| 244 | if (!fx) fx = cur_fx; // fx=0 - use default |
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| 245 | if (vol == 0xFF) vol = sample[fx].volume; |
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| 246 | if (note == 0xFF) note = sample[fx].note; |
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| 247 | if (ch == 0xFF) { // find free channel |
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| 248 | for (/*unsigned*/ i = 0; i < 4; i++) |
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| 249 | if (!chan[i].start) ch = i; |
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| 250 | if (ch == 0xFF) |
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| 251 | for (i = 1, ch = 0; i < 4; i++) |
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| 252 | if (chan[i].ptr > chan[ch].ptr) ch = i; |
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| 253 | } |
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| 254 | chan[ch].volume = vol; |
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| 255 | chan[ch].start = sample[fx].start; |
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| 256 | chan[ch].loop = sample[fx].loop; |
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| 257 | chan[ch].end = sample[fx].end; |
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| 258 | chan[ch].ptr = 0; |
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| 259 | chan[ch].freq = note2rate[note]; |
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| 260 | // ch0,1 - left, ch2,3 - right |
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| 261 | startfx(&chan[ch], (ch & 2)? 1.0f : -1.0f); |
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| 262 | } |
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| 263 | |||
| 264 | DWORD CALLBACK gs_render(HSTREAM handle, void *buffer, DWORD length, void *user) |
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| 265 | { |
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| 266 | GSHLE::CHANNEL *ch = (GSHLE::CHANNEL*)user; |
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| 267 | |||
| 268 | if (!ch->start) |
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| 269 | return BASS_STREAMPROC_END; |
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| 270 | if (ch->busy) |
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| 271 | { |
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| 272 | memset(buffer, 0, length); |
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| 273 | return length; |
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| 274 | } |
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| 275 | unsigned sample_pos = 0; |
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| 276 | for (unsigned i = 0; i < length; i++) |
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| 277 | { |
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| 278 | ((BYTE*)buffer)[i] = ch->start[ch->ptr++]; |
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| 279 | if (ch->ptr >= ch->end) |
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| 280 | { |
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| 281 | if (ch->end < ch->loop) |
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| 282 | { |
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| 283 | ch->start = 0; |
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| 284 | return i + BASS_STREAMPROC_END; |
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| 285 | } |
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| 286 | else |
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| 287 | ch->ptr = ch->loop; |
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| 288 | } |
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| 289 | } |
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| 290 | return length; |
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| 291 | } |
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| 292 | #endif |