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[client/idd] network: discard stale audio after stalls

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Keep PCM and its clock sample in cancellable datagrams so recovery
cannot replay audio buffered before a Wi-Fi stall.

Drop blocked real-time packets with an explicit discontinuity and make
a newer reconnect supersede stale audio authorities.
This commit is contained in:
Geoffrey McRae
2026-10-08 22:51:47 +11:00
parent b1dda92f09
commit 0b0f227c08
11 changed files with 341 additions and 700 deletions
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20
client/src/audio.c
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@@ -2294,7 +2294,8 @@ static void playbackResetRateControl(PlaybackSourceData * sourceData,
}
static PlaybackDataResult playbackData(const void * data, size_t frameCount,
const LG_AudioClock * sourceClock, int64_t arrivalTime)
const LG_AudioClock * sourceClock, bool streamDiscontinuity,
int64_t arrivalTime)
{
StreamState state = playbackGetState();
if (state == STREAM_STATE_STOP_PENDING)
@@ -2363,8 +2364,9 @@ static PlaybackDataResult playbackData(const void * data, size_t frameCount,
const bool bufferUnderrun =
STREAM_ACTIVE(playbackGetState()) &&
ringbuffer_getCount(audio.playback.buffer) < 0;
bool discontinuity =
bufferUnderrun || (sourceClock && sourceClock->discontinuity);
bool discontinuity = bufferUnderrun ||
streamDiscontinuity ||
(sourceClock && sourceClock->discontinuity);
const int64_t previousArrivalTime = sourceData->lastArrivalTime;
const int64_t packetTime =
playbackMapMediaTime(sourceData, sourceClock, frames,
@@ -4039,11 +4041,12 @@ static void eventPlaybackMute(void * opaque, uint32_t generation, bool mute)
}
static void eventPlaybackData(void * opaque, uint32_t generation,
const void * data, size_t frames, const LG_AudioClock * sourceClock)
const void * data, size_t frames, const LG_AudioClock * sourceClock,
bool discontinuity)
{
const int64_t arrivalTime = nanotime();
AudioBinding * binding = opaque;
AudioBinding active;
const int64_t arrivalTime = nanotime();
AudioBinding * binding = opaque;
AudioBinding active;
if (!eventBegin(binding, &active))
return;
@@ -4057,7 +4060,8 @@ static void eventPlaybackData(void * opaque, uint32_t generation,
PlaybackDataResult result = PLAYBACK_DATA_DROP;
if (liveGeneration == generation)
{
result = playbackData(data, frames, sourceClock, arrivalTime);
result = playbackData(
data, frames, sourceClock, discontinuity, arrivalTime);
if (result == PLAYBACK_DATA_PROCESSED &&
atomic_load_explicit(&audio.playback.streamGeneration,