151 typedef struct SNDExChannel  struct
154     u8      type;                      // SNDExChannelType    argument
155     u8      env_status;                // SNDEnvStatus
156     u8      active_flag:1;
157     u8      start_flag:1;
158     u8      auto_sweep:1;
159     u8      sync_flag:5;
161     u8      pan_range;
162     u8      original_key;
163     s16     user_decay2;
165     u8      key;
166     u8      velocity;
167     s8      init_pan;
168     s8      user_pan;
170     s16     user_decay;
171     s16     user_pitch;
173     s32     env_decay;                 // Attenuation due to envelope release
175     s32     sweep_counter;
176     s32     sweep_length;
200     SNDExChannelCallback callback;  argument
203     struct SNDExChannel *nextLink;  argument
205 SNDExChannel;  typedef