void SPU_struct::KeyOn(int channel)
{
channel_struct &thischan = channels[channel];
thischan.status = CHANSTAT_PLAY;
thischan.totlength = thischan.length + thischan.loopstart;
adjust_channel_timer(&thischan);
//LOG("Channel %d key on: vol = %d, datashift = %d, hold = %d, pan = %d, waveduty = %d, repeat = %d, format = %d, source address = %07X,"
// "timer = %04X, loop start = %04X, length = %06X, MMU.ARM7_REG[0x501] = %02X\n", channel, chan->vol, chan->datashift, chan->hold,
// chan->pan, chan->waveduty, chan->repeat, chan->format, chan->addr, chan->timer, chan->loopstart, chan->length, T1ReadByte(MMU.ARM7_REG, 0x501));
switch(thischan.format)
{
case 0: // 8-bit
thischan.buf8 = (s8*)&MMU.MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & MMU.MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
// thischan.loopstart = thischan.loopstart << 2;
// thischan.length = (thischan.length << 2) + thischan.loopstart;
thischan.sampcnt = -3;
break;
case 1: // 16-bit
thischan.buf16 = (s16 *)&MMU.MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & MMU.MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
// thischan.loopstart = thischan.loopstart << 1;
// thischan.length = (thischan.length << 1) + thischan.loopstart;
thischan.sampcnt = -3;
break;
case 2: // ADPCM
{
thischan.buf8 = (s8*)&MMU.MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & MMU.MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
thischan.pcm16b = (s16)((thischan.buf8[1] << 8) | thischan.buf8[0]);
thischan.pcm16b_last = thischan.pcm16b;
thischan.index = thischan.buf8[2] & 0x7F;
thischan.lastsampcnt = 7;
thischan.sampcnt = -3;
thischan.loop_index = K_ADPCM_LOOPING_RECOVERY_INDEX;
// thischan.loopstart = thischan.loopstart << 3;
// thischan.length = (thischan.length << 3) + thischan.loopstart;
break;
}
case 3: // PSG
{
thischan.sampcnt = -1;
thischan.x = 0x7FFF;
break;
}
default: break;
}
thischan.double_totlength_shifted = (double)(thischan.totlength << format_shift[thischan.format]);
if(thischan.format != 3)
{
if(thischan.double_totlength_shifted == 0)
{
printf("INFO: Stopping channel %d due to zero length\n",channel);
thischan.status = CHANSTAT_STOPPED;
}
}
}
void SPU_struct::KeyOn(int channel)
{
channel_struct &thischan = channels[channel];
thischan.init_resampler();
resampler_clear(thischan.resampler);
resampler_set_quality(thischan.resampler, thischan.format == 3 ? RESAMPLER_QUALITY_BLEP : spuInterpolationMode(state));
adjust_channel_timer(&thischan);
// LOG("Channel %d key on: vol = %d, datashift = %d, hold = %d, pan = %d, waveduty = %d, repeat = %d, format = %d, source address = %07X, timer = %04X, loop start = %04X, length = %06X, cpu->state->MMUARM7_REG[0x501] = %02X\n", channel, chan->vol, chan->datashift, chan->hold, chan->pan, chan->waveduty, chan->repeat, chan->format, chan->addr, chan->timer, chan->loopstart, chan->length, T1ReadByte(MMU->ARM7_REG, 0x501));
switch(thischan.format)
{
case 0: // 8-bit
thischan.buf8 = (s8*)&state->MMU->MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & state->MMU->MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
// thischan.loopstart = thischan.loopstart << 2;
// thischan.length = (thischan.length << 2) + thischan.loopstart;
thischan.sampcnt = 0;
break;
case 1: // 16-bit
thischan.buf16 = (s16 *)&state->MMU->MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & state->MMU->MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
// thischan.loopstart = thischan.loopstart << 1;
// thischan.length = (thischan.length << 1) + thischan.loopstart;
thischan.sampcnt = 0;
break;
case 2: // ADPCM
{
thischan.buf8 = (s8*)&state->MMU->MMU_MEM[1][(thischan.addr>>20)&0xFF][(thischan.addr & state->MMU->MMU_MASK[1][(thischan.addr >> 20) & 0xFF])];
thischan.pcm16b = (s16)((thischan.buf8[1] << 8) | thischan.buf8[0]);
thischan.pcm16b_last = thischan.pcm16b;
thischan.index = thischan.buf8[2] & 0x7F;
thischan.lastsampcnt = 7;
thischan.sampcnt = 8;
thischan.loop_index = K_ADPCM_LOOPING_RECOVERY_INDEX;
// thischan.loopstart = thischan.loopstart << 3;
// thischan.length = (thischan.length << 3) + thischan.loopstart;
break;
}
case 3: // PSG
{
thischan.x = 0x7FFF;
break;
}
default: break;
}
if(thischan.format != 3)
{
if(thischan.double_totlength_shifted == 0)
{
printf("INFO: Stopping channel %d due to zero length\n",channel);
thischan.status = CHANSTAT_STOPPED;
}
}
thischan.double_totlength_shifted = (double)(thischan.totlength << format_shift[thischan.format]);
}
