[question] How to specify instrument bank? about tinysoundfont HOT 2 CLOSED

// Returns the preset index from a bank and preset number
// or -1 if it does not exist in the loaded SoundFont
int tsf_get_presetindex(const tsf* f, int bank, int preset_number);

const char* tsf_bank_get_presetname(const tsf* f, int bank, int preset_number);
void tsf_bank_note_on(tsf* f, int bank, int preset_number, int key, float vel);
void tsf_bank_note_off(tsf* f, int bank, int preset_number, int key);