Add WonderSwan support
This commit is contained in:
Natt Akuma
parent
2453426d03
commit
840a6fa306
18 changed files with 1231 additions and 6 deletions
412
src/engine/platform/sound/ws.cpp
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412
src/engine/platform/sound/ws.cpp
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/******************************************************************************/
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/* Mednafen - Multi-system Emulator */
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/******************************************************************************/
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/* sound.cpp - WonderSwan Sound Emulation
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** Copyright (C) 2007-2017 Mednafen Team
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** Copyright (C) 2016 Alex 'trap15' Marshall - http://daifukkat.su/
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation, Inc.,
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** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "ws.h"
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#include <string.h>
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#define MK_SAMPLE_CACHE \
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{ \
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int sample; \
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sample = (((wsRAM[(/*(SampleRAMPos << 6) + */(sample_pos[ch] >> 1) + (ch << 4)) ] >> ((sample_pos[ch] & 1) ? 4 : 0)) & 0x0F)); \
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sample_cache[ch][0] = sample * ((volume[ch] >> 4) & 0x0F); \
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sample_cache[ch][1] = sample * ((volume[ch] >> 0) & 0x0F); \
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}
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#define MK_SAMPLE_CACHE_NOISE \
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{ \
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int sample; \
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sample = ((nreg & 1) ? 0xF : 0x0); \
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sample_cache[ch][0] = sample * ((volume[ch] >> 4) & 0x0F); \
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sample_cache[ch][1] = sample * ((volume[ch] >> 0) & 0x0F); \
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}
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#define MK_SAMPLE_CACHE_VOICE \
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{ \
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int sample, half; \
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sample = volume[ch]; \
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half = sample >> 1; \
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sample_cache[ch][0] = (voice_volume & 4) ? sample : (voice_volume & 8) ? half : 0; \
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sample_cache[ch][1] = (voice_volume & 1) ? sample : (voice_volume & 2) ? half : 0; \
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}
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#define SYNCSAMPLE(wt) /* \
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{ \
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int32_t left = sample_cache[ch][0], right = sample_cache[ch][1]; \
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WaveSynth.offset_inline(wt, left - last_val[ch][0], sbuf[0]); \
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WaveSynth.offset_inline(wt, right - last_val[ch][1], sbuf[1]); \
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last_val[ch][0] = left; \
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last_val[ch][1] = right; \
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} */
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#define SYNCSAMPLE_NOISE(wt) SYNCSAMPLE(wt)
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void WSwan::SoundUpdate(uint32_t v30mz_timestamp)
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{
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int32_t run_time;
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//printf("%d\n", v30mz_timestamp);
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//printf("%02x %02x\n", control, noise_control);
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run_time = v30mz_timestamp - last_ts;
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for(int y = 0; y < 2; y++)
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sbuf[y] = 0;
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for(unsigned int ch = 0; ch < 4; ch++)
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{
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// Channel is disabled?
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if(!(control & (1 << ch)))
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continue;
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if(ch == 1 && (control & 0x20)) // Direct D/A mode?
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{
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MK_SAMPLE_CACHE_VOICE;
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SYNCSAMPLE(v30mz_timestamp);
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}
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else if(ch == 2 && (control & 0x40) && sweep_value) // Sweep
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{
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uint32_t tmp_pt = 2048 - period[ch];
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uint32_t meow_timestamp = v30mz_timestamp - run_time;
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uint32_t tmp_run_time = run_time;
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while(tmp_run_time)
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{
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int32_t sub_run_time = tmp_run_time;
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if(sub_run_time > sweep_8192_divider)
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sub_run_time = sweep_8192_divider;
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sweep_8192_divider -= sub_run_time;
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if(sweep_8192_divider <= 0)
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{
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sweep_8192_divider += 8192;
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sweep_counter--;
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if(sweep_counter <= 0)
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{
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sweep_counter = sweep_step + 1;
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period[ch] = (period[ch] + (int8_t)sweep_value) & 0x7FF;
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}
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}
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meow_timestamp += sub_run_time;
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if(tmp_pt > 4)
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{
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period_counter[ch] -= sub_run_time;
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while(period_counter[ch] <= 0)
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{
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sample_pos[ch] = (sample_pos[ch] + 1) & 0x1F;
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MK_SAMPLE_CACHE;
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SYNCSAMPLE(meow_timestamp + period_counter[ch]);
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period_counter[ch] += tmp_pt;
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}
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}
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tmp_run_time -= sub_run_time;
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}
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}
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else if(ch == 3 && (control & 0x80) && (noise_control & 0x10)) // Noise
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{
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uint32_t tmp_pt = 2048 - period[ch];
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period_counter[ch] -= run_time;
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while(period_counter[ch] <= 0)
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{
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static const uint8_t stab[8] = { 14, 10, 13, 4, 8, 6, 9, 11 };
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nreg = ((nreg << 1) | ((1 ^ (nreg >> 7) ^ (nreg >> stab[noise_control & 0x7])) & 1)) & 0x7FFF;
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if(control & 0x80)
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{
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MK_SAMPLE_CACHE_NOISE;
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SYNCSAMPLE_NOISE(v30mz_timestamp + period_counter[ch]);
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}
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else if(tmp_pt > 4)
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{
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sample_pos[ch] = (sample_pos[ch] + 1) & 0x1F;
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MK_SAMPLE_CACHE;
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SYNCSAMPLE(v30mz_timestamp + period_counter[ch]);
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}
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period_counter[ch] += tmp_pt;
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}
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}
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else
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{
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uint32_t tmp_pt = 2048 - period[ch];
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if(tmp_pt > 4)
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{
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period_counter[ch] -= run_time;
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while(period_counter[ch] <= 0)
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{
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sample_pos[ch] = (sample_pos[ch] + 1) & 0x1F;
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MK_SAMPLE_CACHE;
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SYNCSAMPLE(v30mz_timestamp + period_counter[ch]); // - period_counter[ch]);
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period_counter[ch] += tmp_pt;
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}
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}
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}
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sbuf[0] += sample_cache[ch][0];
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sbuf[1] += sample_cache[ch][1];
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}
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if(HVoiceCtrl & 0x80)
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{
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int16_t sample = (uint8_t)HyperVoice;
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switch(HVoiceCtrl & 0xC)
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{
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case 0x0: sample = (uint16_t)sample << (8 - (HVoiceCtrl & 3)); break;
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case 0x4: sample = (uint16_t)(sample | -0x100) << (8 - (HVoiceCtrl & 3)); break;
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case 0x8: sample = (uint16_t)((int8_t)sample) << (8 - (HVoiceCtrl & 3)); break;
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case 0xC: sample = (uint16_t)sample << 8; break;
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}
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// bring back to 11bit, keeping signedness
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sample >>= 5;
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int32_t left, right;
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left = (HVoiceChanCtrl & 0x40) ? sample : 0;
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right = (HVoiceChanCtrl & 0x20) ? sample : 0;
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// WaveSynth.offset_inline(v30mz_timestamp, left - last_hv_val[0], sbuf[0]);
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// WaveSynth.offset_inline(v30mz_timestamp, right - last_hv_val[1], sbuf[1]);
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// last_hv_val[0] = left;
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// last_hv_val[1] = right;
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sbuf[0] += left;
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sbuf[1] += right;
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}
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last_ts = v30mz_timestamp;
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}
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void WSwan::SoundWrite(uint32_t A, uint8_t V)
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{
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if(A >= 0x80 && A <= 0x87)
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{
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int ch = (A - 0x80) >> 1;
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if(A & 1)
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period[ch] = (period[ch] & 0x00FF) | ((V & 0x07) << 8);
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else
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period[ch] = (period[ch] & 0x0700) | ((V & 0xFF) << 0);
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//printf("Period %d: 0x%04x --- %f\n", ch, period[ch], 3072000.0 / (2048 - period[ch]));
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}
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else if(A >= 0x88 && A <= 0x8B)
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{
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volume[A - 0x88] = V;
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}
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else if(A == 0x8C)
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sweep_value = V;
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else if(A == 0x8D)
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{
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sweep_step = V;
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sweep_counter = sweep_step + 1;
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sweep_8192_divider = 8192;
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}
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else if(A == 0x8E)
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{
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//printf("NOISECONTROL: %02x\n", V);
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if(V & 0x8)
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nreg = 0;
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noise_control = V & 0x17;
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}
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else if(A == 0x90)
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{
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for(int n = 0; n < 4; n++)
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{
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if(!(control & (1 << n)) && (V & (1 << n)))
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{
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period_counter[n] = 1;
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sample_pos[n] = 0x1F;
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}
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}
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control = V;
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//printf("Sound Control: %02x\n", V);
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}
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else if(A == 0x91)
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{
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output_control = V & 0xF;
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//printf("%02x, %02x\n", V, (V >> 1) & 3);
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}
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else if(A == 0x92)
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nreg = (nreg & 0xFF00) | (V << 0);
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else if(A == 0x93)
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nreg = (nreg & 0x00FF) | ((V & 0x7F) << 8);
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else if(A == 0x94)
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{
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voice_volume = V & 0xF;
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//printf("%02x\n", V);
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}
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else switch(A)
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{
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case 0x6A: HVoiceCtrl = V; break;
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case 0x6B: HVoiceChanCtrl = V & 0x6F; break;
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case 0x8F: SampleRAMPos = V; break;
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case 0x95: HyperVoice = V; break; // Pick a port, any port?!
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//default: printf("%04x:%02x\n", A, V); break;
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}
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}
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uint8_t WSwan::SoundRead(uint32_t A)
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{
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if(A >= 0x80 && A <= 0x87)
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{
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int ch = (A - 0x80) >> 1;
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if(A & 1)
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return(period[ch] >> 8);
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else
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return(period[ch]);
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}
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else if(A >= 0x88 && A <= 0x8B)
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return(volume[A - 0x88]);
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else switch(A)
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{
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default: /*printf("SoundRead: %04x\n", A);*/ return(0);
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case 0x6A: return(HVoiceCtrl);
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case 0x6B: return(HVoiceChanCtrl);
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case 0x8C: return(sweep_value);
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case 0x8D: return(sweep_step);
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case 0x8E: return(noise_control);
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case 0x8F: return(SampleRAMPos);
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case 0x90: return(control);
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case 0x91: return(output_control | 0x80);
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case 0x92: return((nreg >> 0) & 0xFF);
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case 0x93: return((nreg >> 8) & 0xFF);
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case 0x94: return(voice_volume);
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}
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}
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void WSwan::RAMWrite(uint32_t A, uint8_t V)
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{
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wsRAM[A & 0x3F] = V;
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}
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int32_t WSwan::SoundFlush(int16_t *SoundBuf, const int32_t MaxSoundFrames)
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{
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int32_t FrameCount = 0;
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if(SoundBuf)
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{
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for(int y = 0; y < 2; y++)
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{
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// sbuf[y]->end_frame(v30mz_timestamp);
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// FrameCount = sbuf[y]->read_samples(SoundBuf + y, MaxSoundFrames, true);
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int32_t left = sbuf[0];
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int32_t right = sbuf[1];
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if (left >= 0x400) left = 0x3FF;
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else if (left < -0x400) left = -0x400;
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if (right >= 0x400) left = 0x3FF;
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else if (right < -0x400) left = -0x400;
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SoundBuf[0] = (int16_t)left << 5;
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SoundBuf[1] = (int16_t)right << 5;
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}
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}
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last_ts = 0;
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return(FrameCount);
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}
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// Call before wsRAM is updated
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// void WSwan::SoundCheckRAMWrite(uint32_t A)
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// {
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// if((A >> 6) == SampleRAMPos)
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// SoundUpdate();
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// }
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// static void RedoVolume(void)
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// {
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// WaveSynth.volume(2.5);
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// }
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// void WSwan::SoundInit(void)
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// {
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// for(int i = 0; i < 2; i++)
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// {
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// sbuf[i] = new Blip_Buffer();
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// sbuf[i]->set_sample_rate(0 ? 0 : 44100, 60);
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// sbuf[i]->clock_rate((long)(3072000));
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// sbuf[i]->bass_freq(20);
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// }
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// RedoVolume();
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// }
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// void WSwan::SoundKill(void)
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// {
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// for(int i = 0; i < 2; i++)
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// {
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// if(sbuf[i])
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// {
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// delete sbuf[i];
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// sbuf[i] = NULL;
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// }
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// }
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// }
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// bool WSwan::SetSoundRate(uint32_t rate)
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// {
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// for(int i = 0; i < 2; i++)
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// sbuf[i]->set_sample_rate(rate?rate:44100, 60);
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// return(true);
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// }
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void WSwan::SoundReset(void)
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{
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memset(period, 0, sizeof(period));
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memset(volume, 0, sizeof(volume));
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voice_volume = 0;
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sweep_step = 0;
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sweep_value = 0;
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noise_control = 0;
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control = 0;
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output_control = 0;
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sweep_8192_divider = 8192;
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sweep_counter = 1;
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SampleRAMPos = 0;
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for(unsigned ch = 0; ch < 4; ch++)
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period_counter[ch] = 1;
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memset(sample_pos, 0, sizeof(sample_pos));
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nreg = 0;
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memset(sample_cache, 0, sizeof(sample_cache));
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// memset(last_val, 0, sizeof(last_val));
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last_v_val = 0;
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HyperVoice = 0;
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last_hv_val[0] = last_hv_val[1] = 0;
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HVoiceCtrl = 0;
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HVoiceChanCtrl = 0;
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for(int y = 0; y < 2; y++)
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// sbuf[y]->clear();
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sbuf[y] = 0;
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last_ts = 0;
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}
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82
src/engine/platform/sound/ws.h
Normal file
82
src/engine/platform/sound/ws.h
Normal file
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@ -0,0 +1,82 @@
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/******************************************************************************/
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/* Mednafen - Multi-system Emulator */
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/******************************************************************************/
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/* sound.h - WonderSwan Sound Emulation
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** Copyright (C) 2007-2016 Mednafen Team
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation, Inc.,
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** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __WSWAN_SOUND_H
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#define __WSWAN_SOUND_H
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#include <stdint.h>
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class WSwan
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{
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public:
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int32_t SoundFlush(int16_t *SoundBuf, const int32_t MaxSoundFrames);
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// void SoundInit(void);
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// void SoundKill(void);
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// void SetSoundMultiplier(double multiplier);
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// bool SetSoundRate(uint32_t rate);
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void SoundWrite(uint32_t, uint8_t);
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uint8_t SoundRead(uint32_t);
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void SoundReset(void);
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// void SoundCheckRAMWrite(uint32_t A);
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void SoundUpdate(uint32_t);
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void RAMWrite(uint32_t, uint8_t);
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private:
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// Blip_Synth<blip_good_quality, 4096> WaveSynth;
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// Blip_Buffer *sbuf[2] = { NULL };
|
||||
int32_t sbuf[2];
|
||||
|
||||
uint16_t period[4];
|
||||
uint8_t volume[4]; // left volume in upper 4 bits, right in lower 4 bits
|
||||
uint8_t voice_volume;
|
||||
|
||||
uint8_t sweep_step, sweep_value;
|
||||
uint8_t noise_control;
|
||||
uint8_t control;
|
||||
uint8_t output_control;
|
||||
|
||||
int32_t sweep_8192_divider;
|
||||
uint8_t sweep_counter;
|
||||
uint8_t SampleRAMPos;
|
||||
|
||||
int32_t sample_cache[4][2];
|
||||
|
||||
int32_t last_v_val;
|
||||
|
||||
uint8_t HyperVoice;
|
||||
int32_t last_hv_val[2];
|
||||
uint8_t HVoiceCtrl, HVoiceChanCtrl;
|
||||
|
||||
int32_t period_counter[4];
|
||||
// int32_t last_val[4][2]; // Last outputted value, l&r
|
||||
uint8_t sample_pos[4];
|
||||
uint16_t nreg;
|
||||
uint32_t last_ts;
|
||||
|
||||
uint8_t wsRAM[64];
|
||||
int16_t sBuf[2];
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue