JavaScript implementation by Alexander Kovalenko: https://github.com/alexanderk23/ayumi-js

void ayumi_configure(struct ayumi* ay, int is_ym, double clock_rate, int sr)

Configures the ayumi structure.

ay: The pointer to the ayumi structure.

is_ym: 1 if the chip is YM2149.

clock_rate: The clock rate of the chip.

sr: The output sample rate.

void ayumi_set_pan(struct ayumi* ay, int index, double pan, int is_eqp)

Sets the panning value for the specified sound channel.

ay: The pointer to the ayumi structure.

index: The index of the sound channel.

pan: The stereo panning value [0-1].

is_eqp: 1 if "equal power" panning is used.

void ayumi_set_tone(struct ayumi* ay, int index, int period)

Sets the tone period value for the specified sound channel.

ay: The pointer to the ayumi structure.

index: The index of the sound channel.

period: The tone period value [0-4095].

void ayumi_set_noise(struct ayumi* ay, int period)

Sets the noise period value.

ay: The pointer to the ayumi structure.

period: The noise period value [0-31].

void ayumi_set_mixer(struct ayumi* ay, int index, int t_off, int n_off, int e_on)

Sets the mixer value for the specified sound channel.

ay: The pointer to the ayumi structure.

index: The index of the sound channel.

t_off: 1 if the tone is off.

n_off: 1 if the noise is off.

e_on: 1 if the envelope is on.

void ayumi_set_volume(struct ayumi* ay, int index, int volume)

Sets the volume for the specified sound channel.

ay: The pointer to the ayumi structure.

index: The index of the sound channel.

volume: The volume [0-15].

void ayumi_set_envelope(struct ayumi* ay, int period)

Sets the envelope period value.

ay: The pointer to the ayumi structure.

period: The envelope period value [0-65535].

void ayumi_set_envelope_shape(struct ayumi* ay, int shape)

Sets the envelope shape value.

ay: The pointer to the ayumi structure.

shape: The envelope shape index [0-15].

void ayumi_process(struct ayumi* ay)

Renders the next stereo sample in ay->left and ay->right.

ay: The pointer to the ayumi structure.

void ayumi_remove_dc(struct ayumi* ay)

Removes the DC offset from the current sample.

ay: The pointer to the ayumi structure.