Bump to v3.0.0: Opus live latency, codec rename, profile-resume after update, save-through-lock
* New "Opus, live latency" codec mode: 2.5 ms frames (120 samples/ch at 48 kHz)
via the float-input encode path. End-to-end codec delay drops to ~5 ms (vs
~12.5 ms at standard 10 ms Opus). Test on LAN: 400 pps/lane, zero missed /
reordered / duplicate packets, ~15 ms one-way saved end-to-end.
* Wire-format change: AudioFormatInfo.FrameDurationMilliseconds renamed to
FrameSamplesPerChannel (int sample-count at announced sample rate). Removes
the lossy 48000*ms/1000 conversion that couldn't represent 2.5 ms. v3 <-> v3
exact; v3 <-> v2 still passes audio (Opus decoder is self-describing from
packet TOC) but v2 side over-sizes its buffer wildly. v2.x profiles auto-
migrate via <120 sentinel rule in RemSoundSettingsStore (anything below 120
is treated as legacy ms and multiplied by 48). Profile JSON key kept as
OpusFrameMilliseconds via [JsonPropertyName] so old profile files still load.
* Codec dropdown rebuilt with use-case names: "PCM 48K 24 bit - uncompressed",
"Opus, broadcast quality - loss tolerant", "Opus, live latency - for jamming
and monitoring". Middle 10 ms option retired; saved 480-sample profiles
collapse to broadcast quality (safer-side default).
* Profile auto-resume after self-update: RemSoundUpdater writes a one-shot
_resume-after-update.txt sentinel containing the active profile title before
exit; Program.Main reads + deletes it on next start and silently loads that
profile, skipping the picker. Helper batch's robocopy /XF excludes the
sentinel and the failure-branch cleans it up if the install aborts. Falls
through to normal startup behaviour (StartWithProfileTitle or picker) if the
sentinel is missing, empty, or names a profile that no longer exists.
* Read-only profile saves now go through on explicit Ctrl+S / File -> Save
with a one-time TaskDialog warning ("Save anyway" / "Cancel" + Do-not-show-
again). Lock continues to suppress the automatic unsaved-changes prompt on
close / profile switch (its main job). AppConfig.SaveOnReadOnlyMessageSuppressed
renamed to SaveOnReadOnlyWarningSuppressed; v2.x suppression flag is silently
discarded since the behaviour changed and the user needs to see the warning
once on each machine.
* Manual (readme.html) updated: codec table rewritten with the three new
choices and corrected bandwidth figures, send-rate description updated, new
sections "The same profile picks up automatically after an update" and
"Saving on purpose while a profile is locked".
* Subsumes the never-separately-released v2.2 work: native Opus encoder
(~97% less per-second memory churn on Opus send path via Concentus.Native),
efficiency tidy-ups (item 4 ASIO probe rate, item 6 WaitHandle, item 7
snapshot cache, items 14/16 heartbeat + discovery), legacy cleanup
(items 30/34/35/36: KeepAlive infrastructure, drift drop/repeat/accumulator
fields, fan-out cache stat). New diagnostic columns cpu/memMB/wsMB/
allocKBps/captureMs/sendMs/recvMs/renderMs gated on Enable-logs.
About dialog updated with v3.0 block at top; v2.2 block retained for the
subsumed work.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Ednunp
co-authored by
Claude Opus 4.7
Claude Opus 4.7
parent
6d6d6897e4
commit
af0e7c3fff
@@ -14,7 +14,7 @@ namespace RemSound.Sender;
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///
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/// Threading: the hot-path methods (<see cref="OnMixedSamples"/> and below) are called from
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/// the capture engine's callback thread. Each lane has exactly one such thread feeding it.
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/// Cross-thread state read from AudioSender (codec, mute, opusFrameMs, etc.) goes through
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/// Cross-thread state read from AudioSender (codec, mute, opusFrameSamples, etc.) goes through
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/// volatile fields on the owner. Configuration mutations (<see cref="ConfigureCodec"/>,
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/// <see cref="OnPcmFrameSizeChanged"/>) come from the UI thread; they take the same
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/// configGate that AudioSender does to serialise streamId rotation against in-flight
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@@ -77,11 +77,11 @@ internal sealed class SenderLane
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public ushort StreamId => streamId;
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public SenderLane(AudioSender owner, int initialOpusFrameMs, int opusBitrate)
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public SenderLane(AudioSender owner, int initialOpusFrameSamplesPerChannel, int opusBitrate)
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{
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this.owner = owner;
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this.opusBitrate = opusBitrate;
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opusEncoder = new OpusEncoderState(initialOpusFrameMs, opusBitrate);
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opusEncoder = new OpusEncoderState(initialOpusFrameSamplesPerChannel, opusBitrate);
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opusFrameStereoSamples = opusEncoder.FrameSizePerChannel * MixChannels;
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streamId = NewStreamId();
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}
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@@ -121,11 +121,11 @@ internal sealed class SenderLane
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/// format), rebuilds the Opus encoder if Opus is in play, and zeroes the accumulator so
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/// any half-filled frame from the previous format doesn't leak into the new one.
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/// </summary>
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public void OnCodecChanged(AudioTransportCodec newCodec, int opusFrameMs)
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public void OnCodecChanged(AudioTransportCodec newCodec, int opusFrameSamplesPerChannel)
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{
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if (newCodec == AudioTransportCodec.Opus)
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{
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opusEncoder = new OpusEncoderState(opusFrameMs, opusBitrate);
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opusEncoder = new OpusEncoderState(opusFrameSamplesPerChannel, opusBitrate);
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opusFrameStereoSamples = opusEncoder.FrameSizePerChannel * MixChannels;
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}
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streamId = NewStreamId();
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@@ -287,19 +287,19 @@ internal sealed class SenderLane
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if (DateTime.UtcNow - lastFormatPacketUtc < TimeSpan.FromMilliseconds(FormatResendIntervalMs)) return;
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lastFormatPacketUtc = DateTime.UtcNow;
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// PCM FrameDurationMilliseconds: receiver only uses this for buffer sizing and
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// diagnostics, not for decode. Round 2.5 ms up to ≥1 to keep the wire field integer.
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var pcmFrameMs = owner.PcmFrameSamplesPerChannel * 1000 / MixSampleRate;
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if (pcmFrameMs < 1) pcmFrameMs = 1;
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// Wire field FrameSamplesPerChannel: receiver uses this for buffer sizing and the
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// decoder hot path. PCM passes through the sender's own sample-count directly; Opus
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// uses whatever the encoder is configured for. v3.0 wire format — see
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// AudioFormatInfo doc comment for the semantic-shift rationale.
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var codec = owner.Codec;
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var opusFrameMs = owner.OpusFrameMilliseconds;
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var opusFrameSamples = owner.OpusFrameSamplesPerChannel;
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// Pass this lane's current Route as the Lane field. In classic-mode senders this is
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// Mixed and the receiver routes the session to its legacy mix bus; in BothIndependent
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// senders this is WasapiLane or AsioLane and the receiver routes to the matching
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// per-route IWaveProvider surface.
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var format = codec == AudioTransportCodec.Opus
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? new AudioFormatInfo(48000, 2, 16, 1, 4, 192_000, (int)AudioTransportCodec.Opus, opusFrameMs, route)
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: new AudioFormatInfo(48000, 2, 24, 1, 6, 288_000, (int)AudioTransportCodec.Pcm, pcmFrameMs, route);
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? new AudioFormatInfo(48000, 2, 16, 1, 4, 192_000, (int)AudioTransportCodec.Opus, opusFrameSamples, route)
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: new AudioFormatInfo(48000, 2, 24, 1, 6, 288_000, (int)AudioTransportCodec.Pcm, owner.PcmFrameSamplesPerChannel, route);
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// Allocate the extended (36-byte) format payload — see RemPacket.FormatPayloadExtendedSize
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// for the backward-compat contract. Old receivers parse the first 32 bytes and ignore
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