syntax = "proto3";
package lnex.voice;

// Voice packet header — sent over UDP (packet_id = 0x0010)
//
// Wire layout (see docs/02-protocol/packets.md):
//   [base header 12 bytes]
//   [voice_seq  4 bytes]
//   [timestamp  4 bytes]
//   [channel_id 8 bytes]
//   [opus_data  variable]
//
// The base header payload_length covers voice_seq + timestamp +
// channel_id + opus_data.

message VoicePacket {
  uint32 voice_seq   = 1;  // per-stream monotonic counter
  uint32 timestamp   = 2;  // 48000 Hz RTP clock
  uint64 channel_id  = 3;
  bytes  opus_data   = 4;  // raw Opus frame
}

// Positional voice extension (Phase 4)
// Attached as additional field when spatial audio is enabled.
message VoicePosition {
  float x         = 1;
  float y         = 2;
  float z         = 3;
  float direction = 4;  // yaw in radians
}