/* Run FM chip for required M-cycles */
INLINE void fm_update(unsigned int cycles)
{
if (cycles > fm_cycles_count)
{
int32 *buffer;
/* samples to run */
unsigned int samples = (cycles - fm_cycles_count + fm_cycles_ratio - 1) / fm_cycles_ratio;
/* update cycle count */
fm_cycles_count += samples * fm_cycles_ratio;
/* select input sample buffer */
buffer = Fir_Resampler_buffer();
if (buffer)
{
Fir_Resampler_write(samples << 1);
}
else
{
buffer = snd.fm.pos;
snd.fm.pos += (samples << 1);
}
/* run FM chip & get samples */
YM_Update(buffer, samples);
}
}
/* Run FM chip until required M-cycles */
INLINE void fm_update(unsigned int cycles)
{
if (cycles > fm_cycles_count)
{
/* number of samples to run */
unsigned int samples = (cycles - fm_cycles_count + fm_cycles_ratio - 1) / fm_cycles_ratio;
/* run FM chip to sample buffer */
YM_Update(fm_ptr, samples);
/* update FM buffer pointer */
fm_ptr += (samples << 1);
/* update FM cycle counter */
fm_cycles_count += samples * fm_cycles_ratio;
}
}
