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YMZ770: sample and sequence looping [MetalliC]

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This commit is contained in:
R. Belmont 2011-10-21 13:32:59 +00:00
parent e7bc43c96e
commit 437245083b
1 changed files with 27 additions and 6 deletions
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33
src/emu/sound/ymz770.c
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@ -665,7 +665,7 @@ void amm::handle_block(int &pos)
int base_offset = rsize;
for(int chan=0; chan<channel_count; chan++) {
double resynthesis_buffer[33]; // MinGW (falsely?) claims out-of-range if not 32; 4.6.x on Linux and 4.2.x on OS X don't
double resynthesis_buffer[33]; // loop in resynthesis() can access [32]
idct32(subbuffer[chan], audio_buffer[chan] + audio_buffer_pos[chan]);
resynthesis(audio_buffer[chan] + audio_buffer_pos[chan] + 16, resynthesis_buffer);
scale_and_clamp(resynthesis_buffer, base_offset+2*chan, 2*channel_count);
@ -785,7 +785,16 @@ void ymz770_device::sound_stream_update(sound_stream &stream, stream_sample_t **
switch (reg)
{
case 0x0f:
channels[ch].is_seq_playing = false;
if (channels[ch].sqncontrol & 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;
@ -808,9 +817,21 @@ void ymz770_device::sound_stream_update(sound_stream &stream, stream_sample_t **
{
if (channels[ch].last_block)
{
channels[ch].is_playing = false;
if (channels[ch].control & 1)
{
UINT8 phrase = channels[ch].phrase;
UINT32 pptr = rom_base[(4*phrase)+1]<<16 | rom_base[(4*phrase)+2]<<8 | rom_base[(4*phrase)+3];
channels[ch].decoder->set_pointers(&rom_base[pptr], (UINT8 *)&channels[ch].output_data[0]);
channels[ch].decoder->init();
}
else
{
channels[ch].is_playing = false;
}
}
else
if (channels[ch].is_playing)
{
channels[ch].last_block = channels[ch].decoder->run();
channels[ch].output_remaining = (channels[ch].decoder->get_rsize()/2)-1;
@ -882,7 +903,7 @@ WRITE8_MEMBER( ymz770_device::write )
channels[voice].is_playing = true;
}
else if (!(data & 6) && (channels[voice].is_playing))
else
{
channels[voice].is_playing = false;
}
@ -906,8 +927,8 @@ WRITE8_MEMBER( ymz770_device::write )
UINT8 sqn = channels[voice].sequence;
UINT32 pptr = rom_base[(4*sqn)+1+0x400]<<16 | rom_base[(4*sqn)+2+0x400]<<8 | rom_base[(4*sqn)+3+0x400];
channels[voice].seqdata = &rom_base[pptr];
channels[voice].is_seq_playing = true;
channels[voice].seqdelay = 0;
channels[voice].is_seq_playing = true;
}
else
{