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Reject large audio timestamp jumps before narrowing PLC packet counts

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evgeny committed 2026-10-14 00:11:31 +02:00
1 parent 359770ecb4
commit 2aafe172d6
2 files changed
+11 -4
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src/stream/stream_playback_audio.cpp
+8 -4
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@@ -118,12 +118,16 @@ int stream_playback_audio_feed(struct stream_playback_audio* a, int64_t pts, con
DEBUG_WARN(DEBUG_CATEGORY_STREAM, "playback audio late packet pts=%lld expected=%lld", (long long)pts, (long long)a->expectedPts);
return 1;
}
int missing = a->expectedPts < 0 ? 0 : (int)((pts - a->expectedPts + 10000) / 20000);
if (missing > 5) {
DEBUG_WARN(DEBUG_CATEGORY_STREAM, "playback audio discontinuity pts=%lld expected=%lld missing=%d",
(long long)pts, (long long)a->expectedPts, missing); return -2;
int64_t difference = a->expectedPts < 0 ? 0 : pts - a->expectedPts;
if (difference >= 110000) {
DEBUG_WARN(DEBUG_CATEGORY_STREAM, "playback audio discontinuity pts=%lld expected=%lld gap_us=%lld",
(long long)pts, (long long)a->expectedPts, (long long)difference); return -2;
}
int missing = a->expectedPts < 0 ? 0 : (int)((difference + 10000) / 20000);
int64_t effectivePts = a->expectedPts < 0 ? pts : a->expectedPts + missing * 20000;
if (effectivePts > INT64_MAX - 20000) {
DEBUG_ERROR(DEBUG_CATEGORY_STREAM, "playback audio normalized PTS overflow pts=%lld", (long long)effectivePts); return -1;
}
for (int i = 0; i < missing; i++) if (feedPcm(a, a->expectedPts + i * 20000, nullptr, 0) < 0) return -1;
if (feedPcm(a, effectivePts, packet, (int)length) < 0) return -1;
a->expectedPts = effectivePts + 20000;