system/stack/mmc/proto/mmc_config.proto

/*
 * Copyright 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto3";

package mmc;

option optimize_for = LITE_RUNTIME;

message Lc3Param {
  // encoder/decoder config
  int32 dt_hz = 1;
  int32 sr_hz = 2;
  int32 sr_pcm_hz = 3;

  // encode/decode parameter
  enum PcmFmt {
    kLc3PcmFormatS16 = 0;
    kLc3PcmFormatS24 = 1;
  }

  PcmFmt fmt = 4;
  int32 stride = 5;
}

// union of different codec parameters
message ConfigParam {
  // This determines the codec type and whether it is an encoder or a decoder.
  oneof codec_param {
    // HFP LC3 encoder and decoder has same parameter type.
    Lc3Param hfp_lc3_encoder_param = 1;
    Lc3Param hfp_lc3_decoder_param = 2;
  }
}