void ymz770_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
stream_sample_t *outL, *outR;
outL = outputs[0];
outR = outputs[1];
for (int i = 0; i < samples; i++)
{
// run sequencers (should probably be in separate timer callbacks)
for (int ch = 0; ch < 8; ch++)
{
if (m_channels[ch].is_seq_playing)
{
if (m_channels[ch].seqdelay > 0)
{
m_channels[ch].seqdelay--;
}
else
{
int reg = *m_channels[ch].seqdata++;
UINT8 data = *m_channels[ch].seqdata++;
switch (reg)
{
case 0x0f:
if (m_channels[ch].seqcontrol & 1)
{
// loop sequence
UINT8 sqn = m_channels[ch].sequence;
UINT32 pptr = m_rom_base[(4*sqn)+1+0x400]<<16 | m_rom_base[(4*sqn)+2+0x400]<<8 | m_rom_base[(4*sqn)+3+0x400];
m_channels[ch].seqdata = &m_rom_base[pptr];
}
else
{
m_channels[ch].is_seq_playing = false;
}
break;
case 0x0e:
m_channels[ch].seqdelay = 32 - 1;
break;
default:
internal_reg_write(reg, data);
break;
}
}
}
}
// process channels
INT32 mix = 0;
for (int ch = 0; ch < 8; ch++)
{
if (m_channels[ch].output_remaining > 0)
{
// force finish current block
mix += (m_channels[ch].output_data[m_channels[ch].output_ptr++]*m_channels[ch].volume);
m_channels[ch].output_remaining--;
if (m_channels[ch].output_remaining == 0 && !m_channels[ch].is_playing)
m_channels[ch].decoder->clear();
}
else if (m_channels[ch].is_playing)
{
retry:
if (m_channels[ch].last_block)
{
if (m_channels[ch].control & 1)
{
// loop sample
UINT8 phrase = m_channels[ch].phrase;
m_channels[ch].atbl = m_rom_base[(4*phrase)+0] >> 4 & 7;
m_channels[ch].pptr = 8*(m_rom_base[(4*phrase)+1]<<16 | m_rom_base[(4*phrase)+2]<<8 | m_rom_base[(4*phrase)+3]);
}
else
{
m_channels[ch].is_playing = false;
m_channels[ch].output_remaining = 0;
m_channels[ch].decoder->clear();
}
}
if (m_channels[ch].is_playing)
{
// next block
int sample_rate, channel_count;
if (!m_channels[ch].decoder->decode_buffer(m_channels[ch].pptr, m_rom_limit, m_channels[ch].output_data, m_channels[ch].output_remaining, sample_rate, channel_count) || m_channels[ch].output_remaining == 0)
{
m_channels[ch].is_playing = !m_channels[ch].last_block; // detect infinite retry loop
m_channels[ch].last_block = true;
m_channels[ch].output_remaining = 0;
goto retry;
}
m_channels[ch].last_block = m_channels[ch].output_remaining < 1152;
m_channels[ch].output_remaining--;
m_channels[ch].output_ptr = 1;
mix += (m_channels[ch].output_data[0]*m_channels[ch].volume);
}
}
void ymz770_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
stream_sample_t *outL, *outR;
outL = outputs[0];
outR = outputs[1];
for (int i = 0; i < samples; i++)
{
// run sequencers (should probably be in separate timer callbacks)
for (auto & elem : m_channels)
{
if (elem.is_seq_playing)
{
if (elem.seqdelay > 0)
{
elem.seqdelay--;
}
else
{
int reg = *elem.seqdata++;
uint8_t data = *elem.seqdata++;
switch (reg)
{
case 0x0f:
if (elem.seqcontrol & 1)
{
// loop sequence
uint8_t sqn = elem.sequence;
uint32_t pptr = m_rom[(4*sqn)+1+0x400]<<16 | m_rom[(4*sqn)+2+0x400]<<8 | m_rom[(4*sqn)+3+0x400];
elem.seqdata = &m_rom[pptr];
}
else
{
elem.is_seq_playing = false;
}
break;
case 0x0e:
elem.seqdelay = 32 - 1;
break;
default:
internal_reg_write(reg, data);
break;
}
}
}
}
// process channels
int32_t mix = 0;
for (auto & elem : m_channels)
{
if (elem.output_remaining > 0)
{
// force finish current block
mix += (elem.output_data[elem.output_ptr++]*elem.volume);
elem.output_remaining--;
if (elem.output_remaining == 0 && !elem.is_playing)
elem.decoder->clear();
}
else if (elem.is_playing)
{
retry:
if (elem.last_block)
{
if (elem.control & 1)
{
// loop sample
uint8_t phrase = elem.phrase;
elem.atbl = m_rom[(4*phrase)+0] >> 4 & 7;
elem.pptr = 8*(m_rom[(4*phrase)+1]<<16 | m_rom[(4*phrase)+2]<<8 | m_rom[(4*phrase)+3]);
}
else
{
elem.is_playing = false;
elem.output_remaining = 0;
elem.decoder->clear();
}
}
if (elem.is_playing)
{
// next block
int sample_rate, channel_count;
if (!elem.decoder->decode_buffer(elem.pptr, m_rom.bytes()*8, elem.output_data, elem.output_remaining, sample_rate, channel_count) || elem.output_remaining == 0)
{
elem.is_playing = !elem.last_block; // detect infinite retry loop
elem.last_block = true;
elem.output_remaining = 0;
goto retry;
}
elem.last_block = elem.output_remaining < 1152;
elem.output_remaining--;
elem.output_ptr = 1;
mix += (elem.output_data[0]*elem.volume);
}
}
void ymz770_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
stream_sample_t *outL, *outR;
int i, ch;
outL = outputs[0];
outR = outputs[1];
for (i = 0; i < samples; i++)
{
INT32 mix;
mix = 0;
for (ch = 0; ch < 8; ch++)
{
if (channels[ch].is_seq_playing)
{
if (channels[ch].seqdelay != 0)
{
channels[ch].seqdelay--;
}
else
{
int reg = *channels[ch].seqdata++;
UINT8 data = *channels[ch].seqdata++;
switch (reg)
{
case 0x0f:
if (channels[ch].seqcontrol & 1)
{
UINT8 sqn = channels[ch].sequence;
UINT32 pptr = rom_base[(4*sqn)+1+0x400]<<16 | rom_base[(4*sqn)+2+0x400]<<8 | rom_base[(4*sqn)+3+0x400];
channels[ch].seqdata = &rom_base[pptr];
}
else
{
channels[ch].is_seq_playing = false;
}
break;
case 0x0e:
channels[ch].seqdelay = 32 - 1;
break;
default:
cur_reg = reg;
internal_reg_write(1, data);
break;
}
}
}
if (channels[ch].is_playing)
{
if (channels[ch].output_remaining > 0)
{
mix += (channels[ch].output_data[channels[ch].output_ptr++]*2*channels[ch].volume);
channels[ch].output_remaining--;
}
else
{
retry:
if (channels[ch].last_block)
{
if (channels[ch].control & 1)
{
UINT8 phrase = channels[ch].phrase;
channels[ch].pptr = 8*(rom_base[(4*phrase)+1]<<16 | rom_base[(4*phrase)+2]<<8 | rom_base[(4*phrase)+3]);
}
else
{
channels[ch].is_playing = false;
}
}
if (channels[ch].is_playing)
{
int sample_rate, channel_count;
if(!channels[ch].decoder->decode_buffer(channels[ch].pptr,
rom_size,
channels[ch].output_data,
channels[ch].output_remaining,
sample_rate,
channel_count))
{
channels[ch].last_block = true;
goto retry;
}
channels[ch].last_block = channels[ch].output_remaining < 1152;
channels[ch].output_remaining--;
channels[ch].output_ptr = 1;
mix += (channels[ch].output_data[0]*2*channels[ch].volume);
}
}
}
}
outL[i] = outR[i] = mix>>8;
}
}
