Case

sendspin-server-cpp -> sendspin-cpp

Start the server first, then the client. The server emits PCM in the 24-bit packed wire format (3-byte packed, little-endian, two's complement). The client advertises a listener and 24-bit PCM as its only supported audio format. The matrix compares canonical PCM hashes after the client unpacks the 24-bit stream. A client SDK with no 24-bit decode path misreads the bytes and produces a hash mismatch. The matrix also verifies that the negotiated stream was 24-bit, because a 16-bit stream of the same clip yields the same canonical hash without exercising the 24-bit path.

Server

sendspin-server-cpp

Client

sendspin-cpp

Status

Passed

PCM hashes match exactly

Server activation

Initial server/activate

What the sendspin-server-cpp server's own adapter recorded for its first server/activate on this connection, reported as sent. The case fails when none was sent, when its activities are not unique values from playback and pairing, or when it omits active_roles. Nothing else in it is checked against the specification: which activities and roles the matched PSK allows is not judged. A recording that cannot be read as that message is shown whole and not judged either.

activitiesplayback
active_rolesplayer@v1

Server group state

Every group/update after activation

What the sendspin-server-cpp server's own adapter recorded for each group/update it sent after its first server/activate on this connection, in order and reported as sent. The case fails when none followed, or when in any of them playback_state is not playing or stopped, or group_id or group_name is missing or not a string. How soon the first followed is not judged, because the specification says promptly and gives no bound, so one sent at any point in the case counts. Whether a change to a field produced a further message is not judged either. A recording of anything other than that message is shown whole and fails the case as a harness gap.

1 of 3

playback_state"stopped"
group_id"1"
group_name"sendspin-server-cpp server"

2 of 3

playback_state"playing"
group_id"1"
group_name"sendspin-server-cpp server"

3 of 3

playback_state"stopped"
group_id"1"
group_name"sendspin-server-cpp server"

Inspection

Summaries, logs, and builds

Matrix result

RAW
{
  "case_dir": "artifacts/results/data/macos__server-initiated-pcm-24bit__sendspin-server-cpp__to__sendspin-cpp",
  "client_exit_code": 0,
  "client_impl": "sendspin-cpp",
  "reason": "PCM hashes match exactly",
  "scenario_id": "server-initiated-pcm-24bit",
  "scenario_revision": 7,
  "server_exit_code": 0,
  "server_impl": "sendspin-server-cpp",
  "status": "passed",
  "unsupported": false
}