void Wiimote::SpeakerData(wm_speaker_data* sd)
{
// TODO consider using static max size instead of new
s16 *samples = new s16[sd->length * 2];
if (m_reg_speaker.format == 0x40)
{
// 8 bit PCM
for (int i = 0; i < sd->length; ++i)
{
samples[i] = (s16)(s8)sd->data[i];
}
}
else if (m_reg_speaker.format == 0x00)
{
// 4 bit Yamaha ADPCM (same as dreamcast)
for (int i = 0; i < sd->length; ++i)
{
samples[i * 2] = adpcm_yamaha_expand_nibble(m_adpcm_state, (sd->data[i] >> 4) & 0xf);
samples[i * 2 + 1] = adpcm_yamaha_expand_nibble(m_adpcm_state, sd->data[i] & 0xf);
}
}
#ifdef WIIMOTE_SPEAKER_DUMP
static int num = 0;
if (num == 0)
{
File::Delete("rmtdump.wav");
File::Delete("rmtdump.bin");
atexit(stopdamnwav);
OpenFStream(ofile, "rmtdump.bin", ofile.binary | ofile.out);
wav.Start("rmtdump.wav", 6000/*Common::swap16(m_reg_speaker.sample_rate)*/);
}
wav.AddMonoSamples(samples, sd->length*2);
if (ofile.good())
{
for (int i = 0; i < sd->length; i++)
{
ofile << sd->data[i];
}
}
num++;
#endif
delete[] samples;
}
void Wiimote::SpeakerData(wm_speaker_data* sd)
{
if (!SConfig::GetInstance().m_WiimoteEnableSpeaker)
return;
if (m_reg_speaker.volume == 0 || m_reg_speaker.sample_rate == 0 || sd->length == 0)
return;
// TODO consider using static max size instead of new
std::unique_ptr<s16[]> samples(new s16[sd->length * 2]);
unsigned int sample_rate_dividend, sample_length;
u8 volume_divisor;
if (m_reg_speaker.format == 0x40)
{
// 8 bit PCM
for (int i = 0; i < sd->length; ++i)
{
samples[i] = ((s16)(s8)sd->data[i]) << 8;
}
// Following details from http://wiibrew.org/wiki/Wiimote#Speaker
sample_rate_dividend = 12000000;
volume_divisor = 0xff;
sample_length = (unsigned int)sd->length;
}
else if (m_reg_speaker.format == 0x00)
{
// 4 bit Yamaha ADPCM (same as dreamcast)
for (int i = 0; i < sd->length; ++i)
{
samples[i * 2] = adpcm_yamaha_expand_nibble(m_adpcm_state, (sd->data[i] >> 4) & 0xf);
samples[i * 2 + 1] = adpcm_yamaha_expand_nibble(m_adpcm_state, sd->data[i] & 0xf);
}
// Following details from http://wiibrew.org/wiki/Wiimote#Speaker
sample_rate_dividend = 6000000;
// 0 - 127
// TODO: does it go beyond 127 for format == 0x40?
volume_divisor = 0x7F;
sample_length = (unsigned int)sd->length * 2;
}
else
{