[feat](trx-rs): add ft8 decoder

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>

src/trx-core/src/audio.rs

@@ -13,6 +13,7 @@ pub const AUDIO_MSG_RX_FRAME: u8 = 0x01;
 pub const AUDIO_MSG_TX_FRAME: u8 = 0x02;
 pub const AUDIO_MSG_APRS_DECODE: u8 = 0x03;
 pub const AUDIO_MSG_CW_DECODE: u8 = 0x04;
+pub const AUDIO_MSG_FT8_DECODE: u8 = 0x05;
 
 /// Maximum payload size (1 MB) to reject bogus frames early.
 const MAX_PAYLOAD_SIZE: u32 = 1_048_576;

src/trx-core/src/client.rs

@@ -26,8 +26,10 @@ pub enum ClientCommand {
     SetCwAuto { enabled: bool },
     SetCwWpm { wpm: u32 },
     SetCwToneHz { tone_hz: u32 },
+    SetFt8DecodeEnabled { enabled: bool },
     ResetAprsDecoder,
     ResetCwDecoder,
+    ResetFt8Decoder,
 }
 
 /// Envelope for client commands with optional authentication token.

src/trx-core/src/decode.rs

@@ -14,6 +14,8 @@ pub enum DecodedMessage {
     Aprs(AprsPacket),
     #[serde(rename = "cw")]
     Cw(CwEvent),
+    #[serde(rename = "ft8")]
+    Ft8(Ft8Message),
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -46,3 +48,17 @@ pub struct CwEvent {
     /// Whether a CW tone is currently detected
     pub signal_on: bool,
 }
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Ft8Message {
+    /// UTC timestamp (milliseconds since epoch)
+    pub ts_ms: i64,
+    /// Approximate SNR (dB)
+    pub snr_db: f32,
+    /// Time offset within slot (seconds)
+    pub dt_s: f32,
+    /// Audio frequency (Hz)
+    pub freq_hz: f32,
+    /// Decoded message text
+    pub message: String,
+}

src/trx-core/src/rig/command.rs

@@ -24,6 +24,8 @@ pub enum RigCommand {
     SetCwAuto(bool),
     SetCwWpm(u32),
     SetCwToneHz(u32),
+    SetFt8DecodeEnabled(bool),
     ResetAprsDecoder,
     ResetCwDecoder,
+    ResetFt8Decoder,
 }

src/trx-core/src/rig/controller/handlers.rs

@@ -507,8 +507,10 @@ pub fn command_from_rig_command(cmd: RigCommand) -> Box<dyn RigCommandHandler> {
         | RigCommand::SetCwAuto(_)
         | RigCommand::SetCwWpm(_)
         | RigCommand::SetCwToneHz(_)
+        | RigCommand::SetFt8DecodeEnabled(_)
         | RigCommand::ResetAprsDecoder
-        | RigCommand::ResetCwDecoder => Box::new(GetSnapshotCommand),
+        | RigCommand::ResetCwDecoder
+        | RigCommand::ResetFt8Decoder => Box::new(GetSnapshotCommand),
     }
 }
 

src/trx-core/src/rig/state.rs

@@ -28,6 +28,8 @@ pub struct RigState {
     #[serde(default)]
     pub cw_decode_enabled: bool,
     #[serde(default)]
+    pub ft8_decode_enabled: bool,
+    #[serde(default)]
     pub cw_auto: bool,
     #[serde(default)]
     pub cw_wpm: u32,
@@ -37,6 +39,8 @@ pub struct RigState {
     pub aprs_decode_reset_seq: u64,
     #[serde(default, skip_serializing)]
     pub cw_decode_reset_seq: u64,
+    #[serde(default, skip_serializing)]
+    pub ft8_decode_reset_seq: u64,
 }
 
 /// Mode supported by the rig.
@@ -87,6 +91,7 @@ impl RigState {
             cw_auto: self.cw_auto,
             cw_wpm: self.cw_wpm,
             cw_tone_hz: self.cw_tone_hz,
+            ft8_decode_enabled: self.ft8_decode_enabled,
         })
     }
 
@@ -134,6 +139,8 @@ pub struct RigSnapshot {
     #[serde(default)]
     pub cw_decode_enabled: bool,
     #[serde(default)]
+    pub ft8_decode_enabled: bool,
+    #[serde(default)]
     pub cw_auto: bool,
     #[serde(default)]
     pub cw_wpm: u32,