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GBHawk: fix audio

This commit is contained in:
alyosha-tas 2020-05-21 13:38:34 -04:00
parent 09f75c281c
commit db91189668
1 changed files with 26 additions and 89 deletions
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115
src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Audio.cs
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@ -117,8 +117,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
public int latched_sample_L, latched_sample_R;
public int SQ1_bias_gain, SQ2_bias_gain, WAVE_bias_gain, NOISE_bias_gain;
public byte ReadReg(int addr)
{
byte ret = 0;
@ -351,7 +349,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
Audio_Regs[NR30] = value;
WAVE_DAC_pow = (value & 0x80) > 0;
if (!WAVE_DAC_pow) { WAVE_enable = false; }
//calculate_bias_gain_w();
calculate_bias_gain_w();
break;
case 0xFF1B: // NR31 (length)
Audio_Regs[NR31] = value;
@ -375,6 +373,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
if ((sequencer_len & 1) == 0)
{
if (!WAVE_len_en && ((value & 0x40) > 0) && (WAVE_len_cntr > 0))
{
WAVE_len_cntr--;
@ -410,11 +409,12 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
if (((value & 0x40) > 0) && ((sequencer_len & 1) == 0)) { WAVE_len_cntr--; }
}
WAVE_intl_cntr = (2048 - WAVE_frq) * 2 + 6; // trigger delay for wave channel
WAVE_wave_cntr = 0;
if (!WAVE_DAC_pow) { WAVE_enable = false; }
}
//calculate_bias_gain_w();
calculate_bias_gain_w();
WAVE_len_en = (value & 0x40) > 0;
break;
case 0xFF20: // NR41 (length)
@ -612,7 +612,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
SQ1_duty_cntr++;
SQ1_duty_cntr &= 7;
SQ1_output = DUTY_CYCLES[SQ1_duty * 8 + SQ1_duty_cntr] ? SQ1_vol_state : SQ1_bias_gain;
SQ1_output = DUTY_CYCLES[SQ1_duty * 8 + SQ1_duty_cntr] ? (SQ1_vol_state + 15) : 15;
// avoid aliasing at high frequenices
//if (SQ1_frq > 0x7F0) { SQ1_output = 0; }
@ -629,7 +629,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
SQ2_duty_cntr++;
SQ2_duty_cntr &= 7;
SQ2_output = DUTY_CYCLES[SQ2_duty * 8 + SQ2_duty_cntr] ? SQ2_vol_state : SQ2_bias_gain;
SQ2_output = DUTY_CYCLES[SQ2_duty * 8 + SQ2_duty_cntr] ? (SQ2_vol_state + 15) : 15;
// avoid aliasing at high frequenices
//if (SQ2_frq > 0x7F0) { SQ2_output = 0; }
@ -670,7 +670,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
sample = (byte)((sample & 0xF) >> 2);
}
WAVE_output = sample;
WAVE_output = (sample + 15);
// NOTE: The sample buffer is only reloaded after the current sample is played, even if just triggered
WAVE_wave_cntr++;
@ -697,7 +697,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
NOISE_LFSR |= (bit_lfsr << 6);
}
NOISE_output = (NOISE_LFSR & 1) > 0 ? NOISE_bias_gain : NOISE_vol_state;
NOISE_output = (NOISE_LFSR & 1) > 0 ? 15 : (NOISE_vol_state + 15);
}
}
@ -989,99 +989,41 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
public void calculate_bias_gain_a()
{
if ((AUD_CTRL_sq1_R_en | AUD_CTRL_sq1_L_en) && ((Audio_Regs[NR12] & 0xF8) > 0))
{
SQ1_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2;
}
else
{
SQ1_bias_gain = 0;
}
if ((AUD_CTRL_sq2_R_en | AUD_CTRL_sq2_L_en) && ((Audio_Regs[NR22] & 0xF8) > 0))
{
SQ2_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2;
}
else
{
SQ2_bias_gain = 0;
}
if ((AUD_CTRL_wave_R_en | AUD_CTRL_wave_L_en) && WAVE_DAC_pow)
{
WAVE_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2;
}
else
{
WAVE_bias_gain = 0;
}
if ((AUD_CTRL_noise_R_en | AUD_CTRL_noise_L_en) && ((Audio_Regs[NR42] & 0xF8) > 0))
{
NOISE_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2;
}
else
{
NOISE_bias_gain = 0;
}
if (!SQ1_enable && ((Audio_Regs[NR12] & 0xF8) > 0)) { SQ1_output = 15; }
else if ((Audio_Regs[NR12] & 0xF8) == 0) { SQ1_output = 0; }
if (!SQ1_enable) { SQ1_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
if (!SQ2_enable) { SQ2_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
//if (!WAVE_enable) { WAVE_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
if (!NOISE_enable) { NOISE_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2; }
if (!SQ2_enable && ((Audio_Regs[NR22] & 0xF8) > 0)) { SQ2_output = 15; }
else if ((Audio_Regs[NR22] & 0xF8) == 0) { SQ2_output = 0; }
if (!WAVE_enable && WAVE_DAC_pow) { WAVE_output = 22; }
else if (!WAVE_DAC_pow) { WAVE_output = 22; }
if (!NOISE_enable && ((Audio_Regs[NR42] & 0xF8) > 0)) { NOISE_output = 15; }
else if ((Audio_Regs[NR42] & 0xF8) == 0) { NOISE_output = 0; }
}
public void calculate_bias_gain_1()
{
if ((AUD_CTRL_sq1_R_en | AUD_CTRL_sq1_L_en) && ((Audio_Regs[NR12] & 0xF8) > 0))
{
SQ1_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 3;
}
else
{
SQ1_bias_gain = 0;
}
if (!SQ1_enable) { SQ1_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
if (!SQ1_enable && ((Audio_Regs[NR12] & 0xF8) > 0)) { SQ1_output = 15; }
else if ((Audio_Regs[NR12] & 0xF8) == 0) { SQ1_output = 0; }
}
public void calculate_bias_gain_2()
{
if ((AUD_CTRL_sq2_R_en | AUD_CTRL_sq2_L_en) && ((Audio_Regs[NR22] & 0xF8) > 0))
{
SQ2_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 3;
}
else
{
SQ2_bias_gain = 0;
}
if (!SQ2_enable) { SQ2_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
if (!SQ2_enable && ((Audio_Regs[NR22] & 0xF8) > 0)) { SQ2_output = 15; }
else if ((Audio_Regs[NR22] & 0xF8) == 0) { SQ2_output = 0; }
}
public void calculate_bias_gain_w()
{
if ((AUD_CTRL_wave_R_en | AUD_CTRL_wave_L_en) && WAVE_DAC_pow)
{
WAVE_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 3;
}
else
{
WAVE_bias_gain = 0;
}
if (!WAVE_enable) { WAVE_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 1; }
if (!WAVE_enable && WAVE_DAC_pow) { WAVE_output = 22; }
else if (!WAVE_DAC_pow) { WAVE_output = 22; }
}
public void calculate_bias_gain_n()
{
if ((AUD_CTRL_noise_R_en | AUD_CTRL_noise_L_en) && ((Audio_Regs[NR42] & 0xF8) > 0))
{
NOISE_bias_gain = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 3;
}
else
{
NOISE_bias_gain = 0;
}
if (!NOISE_enable) { NOISE_output = (AUD_CTRL_vol_R | AUD_CTRL_vol_L) >> 2; }
if (!NOISE_enable && ((Audio_Regs[NR42] & 0xF8) > 0)) { NOISE_output = 15; }
else if ((Audio_Regs[NR42] & 0xF8) == 0) { NOISE_output = 0; }
}
public void SyncState(Serializer ser)
@ -1186,11 +1128,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
ser.Sync(nameof(AUD_CTRL_power), ref AUD_CTRL_power);
ser.Sync(nameof(AUD_CTRL_vol_L), ref AUD_CTRL_vol_L);
ser.Sync(nameof(AUD_CTRL_vol_R), ref AUD_CTRL_vol_R);
ser.Sync(nameof(SQ1_bias_gain), ref SQ1_bias_gain);
ser.Sync(nameof(SQ2_bias_gain), ref SQ2_bias_gain);
ser.Sync(nameof(WAVE_bias_gain), ref WAVE_bias_gain);
ser.Sync(nameof(NOISE_bias_gain), ref NOISE_bias_gain);
}
public byte Read_NR52()