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budctlcratesbudctl-coresrcdevicesrealme_t310codec.rs

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1//! realme Buds T310 commands, tables and pure decoders. No I/O here, so every function can be
2//! tested with bytes from the spec. Each constant cites docs/protocol/realme_t310.md.
3
4use crate::error::{Error, Result};
5use crate::reader::Reader;
6use crate::status::{Battery, Charge, Gesture, NoiseControl, NoiseMode, Switch};
7
8/// Spec: realme_t310.md#bitmap
9pub(super) const HANDSHAKE: u16 = 0x0100;
10/// Spec: realme_t310.md#identity
11pub(super) const PRODUCT_ID: u16 = 0x0103;
12/// Spec: realme_t310.md#firmware
13pub(super) const FIRMWARE: u16 = 0x0105;
14/// Spec: realme_t310.md#battery
15pub(super) const BATTERY: u16 = 0x0106;
16/// Spec: realme_t310.md#gestures
17pub(super) const GESTURES: u16 = 0x0108;
18/// Spec: realme_t310.md#anc-read
19pub(super) const NOISE_CONTROL: u16 = 0x010C;
20/// Spec: realme_t310.md#switches
21pub(super) const SWITCHES: u16 = 0x010D;
22/// Spec: realme_t310.md#anc-write
23pub(super) const NOISE_CONTROL_WRITE: u16 = 0x0404;
24/// Spec: realme_t310.md#eq-read
25pub(super) const EQ_PRESET: u16 = 0x010F;
26/// Spec: realme_t310.md#codec
27pub(super) const CODEC: u16 = 0x0114;
28/// Not sent: the T310 does not answer it (HW1). Kept for W6. Spec: realme_t310.md#bass-read
29#[allow(dead_code)]
30pub(super) const BASS_LEVEL: u16 = 0x0124;
31/// Spec: realme_t310.md#events-offered
32pub(super) const EVENTS_OFFERED: u16 = 0x0200;
33/// Spec: realme_t310.md#subscribe
34pub(super) const SUBSCRIBE: u16 = 0x0205;
35/// Spec: realme_t310.md#fit-test
36pub(super) const FIT_TEST: u16 = 0x0405;
37
38/// Spec: realme_t310.md#identity
39pub(super) const T310_PRODUCT_ID: u32 = 0x06_3C_12;
40
41/// Payload asking for the current noise-control mode. Spec: realme_t310.md#anc-read
42pub(super) const NOISE_MODE_QUERY: [u8; 2] = [0x01, 0x01];
43/// Payload asking for the hold's noise-control cycle (one setting for both buds).
44/// Spec: realme_t310.md#hold-cycle
45pub(super) const HOLD_CYCLE_QUERY: [u8; 2] = [0x02, 0x01];
46/// Count, then the T310's switch ids: `05 06 11 1A 1B 1D`. Spec: realme_t310.md#switches
47pub(super) const SWITCH_QUERY: [u8; 7] = [6, 0x05, 0x06, 0x11, 0x1A, 0x1B, 0x1D];
48
49/// Event codes to subscribe to; the optional ones only when their command is allowed.
50/// Spec: realme_t310.md#subscribe
51const EVENTS: [(u8, Option<u16>); 4] = [(0x01, None), (0x02, None), (0x03, None), (0x04, Some(FIT_TEST))];
52
53/// Spec: realme_t310.md#switches
54const SWITCH_NAMES: [(u8, &str, &str); 5] = [
55 (0x06, "game", "Game mode"),
56 (0x11, "dual", "Dual connection"),
57 (0x1A, "wind", "Wind-noise reduction"),
58 (0x1B, "spatial", "3D sound"),
59 (0x1D, "bass-boost", "Bass boost"),
60];
61
62/// Noise-control masks: mode and level. Spec: realme_t310.md#anc-read
63const NOISE_MODES: [(u32, &str, Option<&str>); 5] = [
64 (0x01, "off", None),
65 (0x02, "transparency", None),
66 (0x04, "anc", Some("light")),
67 (0x08, "anc", Some("deep")),
68 (0x10, "anc", Some("medium")),
69];
70
71/// Bits of the hold cycle. Spec: realme_t310.md#hold-cycle
72const CYCLE_MODES: [(u32, &str); 3] = [(0x01, "off"), (0x02, "transparency"), (0x08, "anc")];
73
74/// Built-in EQ presets by id. Spec: realme_t310.md#eq-read
75const EQ_PRESETS: [(u8, &str); 4] = [
76 (0x00, "pure-raw"),
77 (0x01, "deep-bass"),
78 (0x02, "pure-vocals"),
79 (0x03, "pure-bass"),
80];
81
82/// Spec: realme_t310.md#codec
83const CODECS: [(u8, &str); 8] = [
84 (0x01, "SBC"),
85 (0x02, "AAC"),
86 (0x03, "LDAC"),
87 (0x04, "aptX"),
88 (0x05, "aptX HD"),
89 (0x06, "aptX Adaptive"),
90 (0x07, "LHDC"),
91 (0x08, "LHDC V5"),
92];
93
94/// Gesture-table names. Spec: realme_t310.md#gestures
95const SIDES: [(u8, &str); 3] = [(0x01, "left"), (0x02, "right"), (0x04, "both")];
96/// Spec: realme_t310.md#gestures
97const MAIN_GROUP: u8 = 0x01;
98/// Spec: realme_t310.md#gestures
99const ACTS: [(u8, &str); 6] = [
100 (0x01, "single-tap"),
101 (0x02, "double-tap"),
102 (0x03, "triple-tap"),
103 (0x04, "hold"),
104 (0x05, "slide"),
105 (0x06, "long-hold"),
106];
107/// Spec: realme_t310.md#gestures
108const FUNCTIONS: [(u8, &str); 15] = [
109 (0x00, "none"),
110 (0x01, "play-pause"),
111 (0x03, "voice-assistant"),
112 (0x05, "previous"),
113 (0x06, "next"),
114 (0x07, "volume"),
115 (0x08, "noise-cycle"),
116 (0x09, "favourite-music"),
117 (0x0A, "switch-track"),
118 (0x0B, "volume-up"),
119 (0x0C, "volume-down"),
120 (0x0D, "switch-devices"),
121 (0x11, "game-mode"),
122 (0x1C, "decline-call"),
123 (0x1D, "answer-call"),
124];
125
126fn name_of<K: PartialEq + Copy>(table: &[(K, &'static str)], key: K) -> Option<&'static str> {
127 table.iter().find(|(k, _)| *k == key).map(|(_, name)| *name)
128}
129
130/// When a command may be sent. Spec: realme_t310.md#bitmap
131enum Gate {
132 Always,
133 Bit(u8),
134}
135
136/// The gate of every command budctl uses. An unlisted command is never sent.
137/// Spec: realme_t310.md#bitmap
138fn gate(cmd: u16) -> Option<Gate> {
139 Some(match cmd {
140 0x0100..=0x0104 | 0x0106 | 0x010B | 0x010D | 0x0200 => Gate::Always,
141 0x0105 => Gate::Bit(0),
142 0x0108 | 0x0401 => Gate::Bit(3),
143 0x0109 => Gate::Bit(4),
144 0x0400 => Gate::Bit(5),
145 0x0403 => Gate::Bit(7),
146 0x010C | 0x0404 => Gate::Bit(8),
147 0x0405 => Gate::Bit(9),
148 0x010F | 0x0406 => Gate::Bit(10),
149 0x0114 => Gate::Bit(17),
150 0x0205 => Gate::Bit(22),
151 0x0122 | 0x0418 => Gate::Bit(34),
152 0x0124 | 0x041B => Gate::Bit(38),
153 _ => return None,
154 })
155}
156
157/// The commands these buds accept, from the handshake reply. Spec: realme_t310.md#bitmap
158#[derive(Debug)]
159pub(super) struct Commands {
160 bitmap: Vec<u8>,
161}
162
163impl Commands {
164 pub(super) fn parse(reply: &[u8]) -> Result<Self> {
165 let mut r = ok_reply(reply, "the handshake")?;
166 Ok(Self {
167 bitmap: r.rest().to_vec(),
168 })
169 }
170
171 pub(super) fn allows(&self, cmd: u16) -> bool {
172 match gate(cmd) {
173 Some(Gate::Always) => true,
174 Some(Gate::Bit(n)) => self
175 .bitmap
176 .get(usize::from(n / 8))
177 .is_some_and(|byte| byte & (1 << (n % 8)) != 0),
178 None => false,
179 }
180 }
181}
182
183/// A reply whose status byte is `00`, positioned after it. Spec: realme_t310.md#seq
184fn ok_reply<'a>(reply: &'a [u8], what: &'static str) -> Result<Reader<'a>> {
185 let mut r = Reader::new(reply, what);
186 match r.u8()? {
187 0x00 => Ok(r),
188 status => Err(Error::Rejected {
189 what: what.to_owned(),
190 status,
191 }),
192 }
193}
194
195/// Spec: realme_t310.md#identity
196pub(super) fn decode_product_id(reply: &[u8]) -> Result<u32> {
197 let mut r = ok_reply(reply, "the product id query")?;
198 let [low, middle, high] = [r.u8()?, r.u8()?, r.u8()?];
199 Ok(u32::from_le_bytes([low, middle, high, 0]))
200}
201
202/// Spec: realme_t310.md#events-offered
203pub(super) fn decode_events_offered(reply: &[u8]) -> Result<Vec<u8>> {
204 let mut r = ok_reply(reply, "the event list")?;
205 let count = r.u8()?;
206 Ok(r.take(usize::from(count))?.to_vec())
207}
208
209/// The subscribe payload: count, then the wanted codes the buds offer.
210/// Spec: realme_t310.md#subscribe
211pub(super) fn subscribe_payload(offered: &[u8], commands: &Commands) -> Vec<u8> {
212 let codes: Vec<u8> = EVENTS
213 .iter()
214 .filter(|(code, needs)| offered.contains(code) && needs.is_none_or(|cmd| commands.allows(cmd)))
215 .map(|(code, _)| *code)
216 .collect();
217 let mut payload = vec![u8::try_from(codes.len()).unwrap_or_default()];
218 payload.extend(codes);
219 payload
220}
221
222/// Spec: realme_t310.md#battery
223pub(super) fn decode_battery(reply: &[u8]) -> Result<Battery> {
224 let mut r = ok_reply(reply, "the battery reply")?;
225 let mut battery = Battery::default();
226 for _ in 0..r.u8()? {
227 let part = r.u8()?;
228 let raw = r.u8()?;
229 let level = raw & 0x7F;
230 if level == 0 {
231 continue; // not known
232 }
233 let charge = Some(Charge {
234 level,
235 charging: raw & 0x80 != 0,
236 });
237 match part {
238 0x01 => battery.left = charge,
239 0x02 => battery.right = charge,
240 0x03 => battery.case = charge,
241 _ => {}
242 }
243 }
244 Ok(battery)
245}
246
247/// The versions of kind 2: plain numbers are joined with dots; full dotted versions (the T310's)
248/// are shown once each, joined with ` / `. The raw text when there are none.
249/// Spec: realme_t310.md#firmware
250pub(super) fn decode_firmware(reply: &[u8]) -> Result<String> {
251 let mut r = ok_reply(reply, "the firmware reply")?;
252 let _count = r.u8()?;
253 let text = String::from_utf8_lossy(r.rest()).into_owned();
254 let fields: Vec<&str> = text.split(',').map(str::trim).collect();
255 let mut versions: Vec<&str> = fields
256 .chunks(3)
257 .filter_map(|triple| match triple {
258 [_device, "2", version] => Some(*version),
259 _ => None,
260 })
261 .collect();
262 if versions.is_empty() {
263 return Ok(text);
264 }
265 if !versions.iter().any(|v| v.contains('.')) {
266 return Ok(versions.join("."));
267 }
268 let mut seen = Vec::new();
269 versions.retain(|v| {
270 let new = !seen.contains(v);
271 seen.push(*v);
272 new
273 });
274 Ok(versions.join(" / "))
275}
276
277/// Spec: realme_t310.md#codec
278pub(super) fn decode_codec(reply: &[u8]) -> Result<String> {
279 let codec = ok_reply(reply, "the codec reply")?.u8()?;
280 Ok(name_of(&CODECS, codec).map_or_else(|| format!("unknown (0x{codec:02X})"), str::to_owned))
281}
282
283/// Spec: realme_t310.md#anc-read
284pub(super) fn decode_noise_mode(reply: &[u8]) -> Result<NoiseControl> {
285 let mask = noise_mask(reply, NOISE_MODE_QUERY, "the noise-control reply")?;
286 Ok(match NOISE_MODES.iter().find(|(m, _, _)| *m == mask) {
287 Some((_, mode, level)) => NoiseControl {
288 mode: (*mode).to_owned(),
289 level: level.map(str::to_owned),
290 },
291 None => NoiseControl {
292 mode: format!("unknown (0x{mask:02X})"),
293 level: None,
294 },
295 })
296}
297
298/// The mask that selects `mode`, as written and as read back. Spec: realme_t310.md#anc-write
299pub(super) fn noise_write_mask(mode: NoiseMode) -> u32 {
300 match mode {
301 NoiseMode::Off => 0x01,
302 NoiseMode::Transparency => 0x02,
303 // Plain "noise cancelling on" is the deep level.
304 NoiseMode::Anc => 0x08,
305 }
306}
307
308/// `01 01 <mask>`: the noise-mode kind, then the mask in the fewest bytes (all fit in one).
309/// Spec: realme_t310.md#anc-write
310pub(super) fn noise_write_payload(mode: NoiseMode) -> Vec<u8> {
311 let mut payload = NOISE_MODE_QUERY.to_vec();
312 let mask = noise_write_mask(mode).to_le_bytes();
313 let used = mask.iter().rposition(|&b| b != 0).map_or(1, |last| last + 1);
314 payload.extend(mask.iter().take(used));
315 payload
316}
317
318/// The mask in a noise-control read reply. Spec: realme_t310.md#anc-read
319pub(super) fn decode_noise_mask(reply: &[u8]) -> Result<u32> {
320 noise_mask(reply, NOISE_MODE_QUERY, "the noise-control reply")
321}
322
323/// A write reply: `00` means accepted. Spec: realme_t310.md#writes
324pub(super) fn check_write_reply(reply: &[u8], what: &'static str) -> Result<()> {
325 ok_reply(reply, what).map(|_| ())
326}
327
328/// Spec: realme_t310.md#hold-cycle
329pub(super) fn decode_hold_cycle(reply: &[u8]) -> Result<Vec<String>> {
330 let mask = noise_mask(reply, HOLD_CYCLE_QUERY, "the hold-cycle reply")?;
331 let mut modes: Vec<String> = CYCLE_MODES
332 .iter()
333 .filter(|(bit, _)| mask & bit != 0)
334 .map(|(_, name)| (*name).to_owned())
335 .collect();
336 let known = CYCLE_MODES.iter().fold(0, |all, (bit, _)| all | bit);
337 if mask & !known != 0 {
338 modes.push(format!("unknown (0x{:02X})", mask & !known));
339 }
340 Ok(modes)
341}
342
343/// `00 <echo of the query> <mask, 1-4 bytes LE>`. Spec: realme_t310.md#anc-read
344fn noise_mask(reply: &[u8], query: [u8; 2], what: &'static str) -> Result<u32> {
345 let mut r = ok_reply(reply, what)?;
346 if [r.u8()?, r.u8()?] != query {
347 return Err(Error::Protocol(format!("{what} answers a different question")));
348 }
349 let bytes = r.rest();
350 if bytes.is_empty() || bytes.len() > 4 {
351 return Err(Error::Protocol(format!("{what} has a {} byte value", bytes.len())));
352 }
353 Ok(bytes.iter().rev().fold(0, |mask, &b| (mask << 8) | u32::from(b)))
354}
355
356/// Spec: realme_t310.md#switches
357pub(super) fn decode_switches(reply: &[u8]) -> Result<Vec<Switch>> {
358 let mut r = ok_reply(reply, "the switch reply")?;
359 let mut switches = Vec::new();
360 for _ in 0..r.u8()? {
361 let id = r.u8()?;
362 let value = r.u8()?;
363 if let Some((_, key, label)) = SWITCH_NAMES.iter().find(|(known, _, _)| *known == id) {
364 switches.push(Switch {
365 key,
366 label,
367 on: value == 0x01,
368 });
369 }
370 }
371 Ok(switches)
372}
373
374/// Spec: realme_t310.md#eq-read
375pub(super) fn decode_eq(reply: &[u8]) -> Result<String> {
376 let id = ok_reply(reply, "the EQ reply")?.u8()?;
377 Ok(name_of(&EQ_PRESETS, id).map_or_else(|| format!("custom-{id}"), str::to_owned))
378}
379
380/// `00 <min> <max> <level>`, all signed. Not used until W6. Spec: realme_t310.md#bass-read
381#[allow(dead_code)]
382pub(super) fn decode_bass_level(reply: &[u8]) -> Result<i8> {
383 let mut r = ok_reply(reply, "the bass-level reply")?;
384 let (min, max, level) = (r.i8()?, r.i8()?, r.i8()?);
385 if !(min..=max).contains(&level) {
386 return Err(Error::Protocol(format!("bass level {level} outside {min}..={max}")));
387 }
388 Ok(level)
389}
390
391/// Spec: realme_t310.md#gestures
392pub(super) fn decode_gestures(reply: &[u8]) -> Result<Vec<Gesture>> {
393 let mut r = ok_reply(reply, "the gesture table")?;
394 let mut gestures = Vec::new();
395 for _ in 0..r.u8()? {
396 let [side, group, act, function] = [r.u8()?, r.u8()?, r.u8()?, r.u8()?];
397 gestures.push(Gesture {
398 side: name_of(&SIDES, side).map_or_else(|| format!("device-0x{side:02X}"), str::to_owned),
399 gesture: name_of(&ACTS, act).map_or_else(|| format!("act-0x{act:02X}"), str::to_owned),
400 action: name_of(&FUNCTIONS, function).map_or_else(|| format!("fn-0x{function:02X}"), str::to_owned),
401 group: (group != MAIN_GROUP).then_some(group),
402 });
403 }
404 Ok(gestures)
405}
406
407/// The handshake reply of the owner's T310 (HW1). Spec: realme_t310.md#bitmap-t310
408#[cfg(test)]
409pub(super) const T310_BITMAP_REPLY: &str = "00 BF 1F 5A 20 45 04 40 00";
410
411#[cfg(test)]
412mod tests {
413 use super::*;
414 use crate::transport::mock::hex;
415
416 #[test]
417 fn t310_bitmap_allows_its_commands_and_nothing_else() {
418 let commands = Commands::parse(&hex(T310_BITMAP_REPLY)).unwrap();
419 // Every gated command in the T310's logged command set (realme_t310.md#bitmap-t310).
420 for cmd in [
421 0x0100, 0x0103, 0x0105, 0x0106, 0x0108, 0x0109, 0x010C, 0x010D, 0x010F, 0x0114, 0x0122, 0x0124, 0x0205,
422 0x0400, 0x0401, 0x0403, 0x0404, 0x0405, 0x0406, 0x0418, 0x041B, 0x0200,
423 ] {
424 assert!(commands.allows(cmd), "0x{cmd:04X} should be allowed");
425 }
426 // Commands the T310 lacks, and commands budctl has no gate for.
427 for cmd in [0x012F, 0x041E, 0x0413, 0x0130, 0x0427, 0x0423, 0x012A, 0x0422, 0x9999] {
428 assert!(!commands.allows(cmd), "0x{cmd:04X} should be refused");
429 }
430 }
431
432 #[test]
433 fn a_short_bitmap_allows_only_the_always_commands() {
434 let commands = Commands::parse(&hex("00")).unwrap();
435 assert!(commands.allows(BATTERY) && commands.allows(SWITCHES) && commands.allows(HANDSHAKE));
436 assert!(!commands.allows(FIRMWARE) && !commands.allows(NOISE_CONTROL));
437 assert!(matches!(
438 Commands::parse(&hex("01 FF")),
439 Err(Error::Rejected { status: 1, .. })
440 ));
441 }
442
443 #[test]
444 fn product_id_is_three_bytes_little_endian() {
445 assert_eq!(decode_product_id(&hex("00 12 3C 06")).unwrap(), T310_PRODUCT_ID);
446 assert_eq!(decode_product_id(&hex("00 14 54 06")).unwrap(), 0x06_54_14);
447 assert!(decode_product_id(&hex("00 12 3C")).is_err());
448 }
449
450 #[test]
451 fn subscribes_to_offered_events_only() {
452 let commands = Commands::parse(&hex(T310_BITMAP_REPLY)).unwrap();
453 let buds4_offer = hex("00 09 01 02 03 04 08 0B F1 F2 F3");
454 let offered = decode_events_offered(&buds4_offer).unwrap();
455 assert_eq!(subscribe_payload(&offered, &commands), hex("04 01 02 03 04"));
456 assert_eq!(subscribe_payload(&[0x02, 0x01], &commands), hex("02 01 02"));
457 let no_fit_test = Commands::parse(&hex("00 BD 0D")).unwrap();
458 assert_eq!(subscribe_payload(&offered, &no_fit_test), hex("03 01 02 03"));
459 }
460
461 #[test]
462 fn battery_levels_charging_and_unknown_parts() {
463 let battery = decode_battery(&hex("00 03 01 64 02 E4 03 00")).unwrap();
464 assert_eq!(
465 battery.left,
466 Some(Charge {
467 level: 100,
468 charging: false
469 })
470 );
471 assert_eq!(
472 battery.right,
473 Some(Charge {
474 level: 100,
475 charging: true
476 })
477 );
478 assert_eq!(battery.case, None);
479 assert_eq!(decode_battery(&hex("00 00")).unwrap(), Battery::default());
480 assert!(decode_battery(&hex("00 03 01 64")).is_err());
481 }
482
483 #[test]
484 fn firmware_shows_kind_two_versions() {
485 let mut reply = hex("00 04");
486 reply.extend(b"1,2,138,2,2,138,3,1,01,3,2,105");
487 assert_eq!(decode_firmware(&reply).unwrap(), "138.138.105");
488 // The owner's T310 (HW1): both buds report the same full version.
489 let mut t310 = hex("00 02");
490 t310.extend(b"1,2,1.1.0.43,2,2,1.1.0.43");
491 assert_eq!(decode_firmware(&t310).unwrap(), "1.1.0.43");
492 let mut differ = hex("00 02");
493 differ.extend(b"1,2,1.1.0.43,2,2,1.1.0.44");
494 assert_eq!(decode_firmware(&differ).unwrap(), "1.1.0.43 / 1.1.0.44");
495 let mut odd = hex("00 01");
496 odd.extend(b"V1.0.2");
497 assert_eq!(decode_firmware(&odd).unwrap(), "V1.0.2");
498 }
499
500 #[test]
501 fn noise_control_modes() {
502 let mode = |reply: &str| decode_noise_mode(&hex(reply)).unwrap();
503 assert_eq!(mode("00 01 01 01").mode, "off");
504 assert_eq!(mode("00 01 01 02 00").mode, "transparency");
505 let deep = mode("00 01 01 08");
506 assert_eq!((deep.mode.as_str(), deep.level.as_deref()), ("anc", Some("deep")));
507 assert_eq!(mode("00 01 01 10").level.as_deref(), Some("medium"));
508 assert_eq!(mode("00 01 01 00 08").mode, "unknown (0x800)");
509 assert!(decode_noise_mode(&hex("00 02 01 08")).is_err());
510 assert!(decode_noise_mode(&hex("00 01 01")).is_err());
511 assert!(matches!(
512 decode_noise_mode(&hex("0E 01 01 08")),
513 Err(Error::Rejected { status: 0x0E, .. })
514 ));
515 }
516
517 #[test]
518 fn noise_control_write_payloads() {
519 assert_eq!(noise_write_payload(NoiseMode::Off), hex("01 01 01"));
520 assert_eq!(noise_write_payload(NoiseMode::Transparency), hex("01 01 02"));
521 assert_eq!(noise_write_payload(NoiseMode::Anc), hex("01 01 08"));
522 // The family's documented frame for "off" (realme_t310.md#frame-whole).
523 let frame =
524 crate::devices::realme_t310::frame::encode(NOISE_CONTROL_WRITE, 0x06, &noise_write_payload(NoiseMode::Off))
525 .unwrap();
526 assert_eq!(frame, hex("AA 0A 00 00 04 04 06 03 00 01 01 01"));
527 }
528
529 #[test]
530 fn write_replies() {
531 assert!(check_write_reply(&hex("00"), "the write").is_ok());
532 assert!(matches!(
533 check_write_reply(&hex("0E"), "the write"),
534 Err(Error::Rejected { status: 0x0E, .. })
535 ));
536 assert!(check_write_reply(&[], "the write").is_err());
537 }
538
539 #[test]
540 fn hold_cycle_lists_modes() {
541 assert_eq!(decode_hold_cycle(&hex("00 02 01 0A")).unwrap(), ["transparency", "anc"]);
542 assert_eq!(
543 decode_hold_cycle(&hex("00 02 01 0B 00")).unwrap(),
544 ["off", "transparency", "anc"]
545 );
546 assert_eq!(decode_hold_cycle(&hex("00 02 01 14")).unwrap(), ["unknown (0x14)"]);
547 }
548
549 #[test]
550 fn switches_from_report_22_values() {
551 let switches = decode_switches(&hex("00 06 05 00 06 00 11 01 1A 00 1B 01 1D 01")).unwrap();
552 let on: Vec<(&str, bool)> = switches.iter().map(|s| (s.key, s.on)).collect();
553 assert_eq!(
554 on,
555 [
556 ("game", false),
557 ("dual", true),
558 ("wind", false),
559 ("spatial", true),
560 ("bass-boost", true)
561 ]
562 );
563 assert!(decode_switches(&hex("00 02 06 01")).is_err());
564 }
565
566 #[test]
567 fn eq_codec_and_bass_level() {
568 assert_eq!(decode_eq(&hex("00 00")).unwrap(), "pure-raw");
569 assert_eq!(decode_eq(&hex("00 03")).unwrap(), "pure-bass");
570 assert_eq!(decode_eq(&hex("00 05")).unwrap(), "custom-5");
571 assert_eq!(decode_codec(&hex("00 02")).unwrap(), "AAC");
572 assert_eq!(decode_codec(&hex("00 09")).unwrap(), "unknown (0x09)");
573 assert_eq!(decode_bass_level(&hex("00 FB 05 FE")).unwrap(), -2);
574 assert!(decode_bass_level(&hex("00 FB 05 07")).is_err());
575 }
576
577 #[test]
578 fn gesture_table_names_known_values() {
579 let gestures = decode_gestures(&hex("00 03 01 01 02 01 02 01 04 08 04 06 02 1D")).unwrap();
580 let rows: Vec<(&str, &str, &str, Option<u8>)> = gestures
581 .iter()
582 .map(|g| (g.side.as_str(), g.gesture.as_str(), g.action.as_str(), g.group))
583 .collect();
584 assert_eq!(
585 rows,
586 [
587 ("left", "double-tap", "play-pause", None),
588 ("right", "hold", "noise-cycle", None),
589 ("both", "double-tap", "answer-call", Some(6)),
590 ]
591 );
592 let odd = decode_gestures(&hex("00 01 09 01 07 42")).unwrap();
593 assert_eq!(odd.first().map(|g| g.action.as_str()), Some("fn-0x42"));
594 assert!(decode_gestures(&hex("00 02 01 01 02 01")).is_err());
595 }
596}