syntax = "proto2";

package logs.proto.tuningfork;

import "tuningfork.proto";

message DeviceInfo {

  // Total device memory from /proc/meminfo.
  optional int64 total_memory_bytes = 1;

  // The upper order 16 bits represent the major version and
  // the lower order 16 bits the minor version. A value of 0
  // indicates that the version is unavailable.
  optional int32 gl_es_version = 2;

  // From system property 'ro.build.fingerprint'.
  optional string build_fingerprint = 3;

  // From system property 'ro.build.version.sdk'.
  optional string build_version_sdk = 4;

  // From '/sys/devices/system/cpu/cpu/#/cpufreq/cpuinfo_max_freq'.
  repeated int64 cpu_max_freq_hz = 5;

}

message TuningForkLogEvent {

  // FidelityParams message serialization defined by the developer
  // See http://go/tuningfork-integration-guide
  optional bytes fidelityparams = 1;

  // Received from Play at initialization.
  optional string experiment_id = 2;

  // Data histograms, one for each active annotation / instrument_id.
  repeated TuningForkHistogram histograms = 3;

  // Tuning-fork generated id (matches FidelityParam request).
  optional string session_id = 4;

  // Static device information.
  optional DeviceInfo device_info = 5;

  // Package name from APK manifest.
  optional string apk_package_name = 6;

  // Version code from APK manifest.
  optional int32 apk_version_code = 7;

  // Tuning fork version (upper 16 bits: major, lower 16 bits minor)
  optional int32 tuningfork_version = 8;
}

message TuningForkHistogram {

  // ID of the frame capture point.
  optional int32 instrument_id = 1;

  // Annotation defined by the developer.
  // See http://go/tuningfork-integration-guide
  optional bytes annotation = 2;

  // Bucket counts.
  // The APK contains hard-coded bucket ranges for each instrument_id.
  repeated int32 counts = 3 [packed=true];
}