1 syntax = "proto2"; 2 option optimize_for = LITE_RUNTIME; 3 package webrtc.audioproc; 4 5 // Contains the format of input/output/reverse audio. An Init message is added 6 // when any of the fields are changed. 7 message Init { 8 optional int32 sample_rate = 1; 9 optional int32 device_sample_rate = 2 [deprecated=true]; 10 optional int32 num_input_channels = 3; 11 optional int32 num_output_channels = 4; 12 optional int32 num_reverse_channels = 5; 13 optional int32 reverse_sample_rate = 6; 14 optional int32 output_sample_rate = 7; 15 } 16 17 // May contain interleaved or deinterleaved data, but don't store both formats. 18 message ReverseStream { 19 // int16 interleaved data. 20 optional bytes data = 1; 21 22 // float deinterleaved data, where each repeated element points to a single 23 // channel buffer of data. 24 repeated bytes channel = 2; 25 } 26 27 // May contain interleaved or deinterleaved data, but don't store both formats. 28 message Stream { 29 // int16 interleaved data. 30 optional bytes input_data = 1; 31 optional bytes output_data = 2; 32 33 optional int32 delay = 3; 34 optional sint32 drift = 4; 35 optional int32 level = 5; 36 optional bool keypress = 6; 37 38 // float deinterleaved data, where each repeated element points to a single 39 // channel buffer of data. 40 repeated bytes input_channel = 7; 41 repeated bytes output_channel = 8; 42 } 43 44 // Contains the configurations of various APM component. A Config message is 45 // added when any of the fields are changed. 46 message Config { 47 // Next field number 17. 48 // Acoustic echo canceler. 49 optional bool aec_enabled = 1; 50 optional bool aec_delay_agnostic_enabled = 2; 51 optional bool aec_drift_compensation_enabled = 3; 52 optional bool aec_extended_filter_enabled = 4; 53 optional int32 aec_suppression_level = 5; 54 // Mobile AEC. 55 optional bool aecm_enabled = 6; 56 optional bool aecm_comfort_noise_enabled = 7; 57 optional int32 aecm_routing_mode = 8; 58 // Automatic gain controller. 59 optional bool agc_enabled = 9; 60 optional int32 agc_mode = 10; 61 optional bool agc_limiter_enabled = 11; 62 optional bool noise_robust_agc_enabled = 12; 63 // High pass filter. 64 optional bool hpf_enabled = 13; 65 // Noise suppression. 66 optional bool ns_enabled = 14; 67 optional int32 ns_level = 15; 68 // Transient suppression. 69 optional bool transient_suppression_enabled = 16; 70 } 71 72 message Event { 73 enum Type { 74 INIT = 0; 75 REVERSE_STREAM = 1; 76 STREAM = 2; 77 CONFIG = 3; 78 UNKNOWN_EVENT = 4; 79 } 80 81 required Type type = 1; 82 83 optional Init init = 2; 84 optional ReverseStream reverse_stream = 3; 85 optional Stream stream = 4; 86 optional Config config = 5; 87 } 88
