crossover.proto

syntax = "proto3";
package crossover;

message CrossoverConfig {
  // repeated CrossoverProfile profiles = 1;
  // map key is create_time
  map<int64, CrossoverProfile> profiles = 1;
  // The create_time of current profile. If not given or zero, default to muted
  int64 current_profile = 2;
}

message CrossoverProfile {
  repeated ChannelConfig channels = 1;
  repeated MixerOutputConfig mixer = 2;
  string name = 3;
  // Note: input_count is currently always 2! The remaining is output channels
  uint32 input_count = 4;
}

message MixerOutputConfig {
  // length = input channel count
  repeated MixerInputConfig input_channels = 1;
}

message MixerInputConfig {
  double gain = 1; // db
  bool inverted = 2;
  bool mute = 3;
}

message ChannelConfig {
  // If link_to is -1, means this channel is disabled
  int32 link_to = 1;
  repeated IIRConfig iir_filters = 2;
  optional FIRConfig fir_filter = 3;
  DelayConfig delay = 4;
  double gain = 5;
  bool invert = 6;
  bool mute = 7;
  string name = 8;
}

message IIRConfig {
  bool bypass = 1;
  // config is json, corresponding to CamillaDSP format. 
  // type is the subtype inside Biquad or BiquadCombo, e.g. 'Highpass'
  // example:
  // type: 'Highpass', config: '{ "freq": 80, "q": 0.5 }'
  string id = 5;
  string type = 6;
  string config = 7;
}

message FIRConfig {
  bool bypass = 1;
  string coefficient_name = 2;
}

enum DelayUnit { DELAY_MS = 0; DELAY_MM = 1; DELAY_SAMPLES = 2; }
message DelayConfig {
  bool bypass = 1;
  double delay = 2;
  DelayUnit unit = 3;
  bool subsample = 4;
}