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Diagnose decoder work crossing video presentation deadlines

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evgeny committed 2026-10-19 20:57:45 +02:00
1 parent 10018d008e
commit 7b38fd0269
2 files changed
+54 -4
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tools/chatgui/src/call_video_engine.cpp
+26 -4
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@@ -394,6 +394,22 @@ void CallVideoEngine::receive() {
call_video_frame input{};
bool wakeBound = false, waitingKey = false;
int64_t decoderProgressAt = nowUs();
unsigned decodeDeadlineMisses = 0;
int64_t decodeDeadlineMax = 0, decodeDeadlineWork = 0, decodeDeadlineMargin = 0;
const char* decodeDeadlineStage = "none";
auto recordDeadlineWork = [&](const char* stage, int64_t started, int64_t finished) {
// Только уже назначенный показ: ожидание аудио и отсутствие готовой головы сюда не относятся.
if (pictures.empty() || playout.awaiting || !playout.audio_valid
|| playout.head_pts != pictures.front().timing.pts_us || playout.deadline_us != playout.head_due_us
|| started >= playout.head_due_us || finished <= playout.head_due_us) return;
++decodeDeadlineMisses;
if (finished - playout.head_due_us > decodeDeadlineMax) {
decodeDeadlineMax = finished - playout.head_due_us; decodeDeadlineWork = finished - started;
decodeDeadlineMargin = playout.head_due_us - started; decodeDeadlineStage = stage;
}
};
DEBUG_INFO(DEBUG_CATEGORY_CALL, "video RX scheduling call=%llu decoder_and_playout_shared=1 ready_capacity=3 "
"deadline_overlap_diagnostics=1", (unsigned long long)m->id);
while (m->running) {
const uint64_t ticket = m->rxWake.ticket();
if (requestedWake) wakeLateMax = std::max(wakeLateMax, nowUs() - requestedWake);
@@ -422,7 +438,8 @@ void CallVideoEngine::receive() {
while (pictures.size() + playout.awaiting < 3 && m->running) {
call_video_frame packet{}; QImage image;
const int64_t started = nowUs(); int result = decoder.receive(packet, image);
decodeMax = std::max(decodeMax, nowUs() - started);
const int64_t finished = nowUs();
decodeMax = std::max(decodeMax, finished - started); recordDeadlineWork("output", started, finished);
if (!result && !playout.awaiting && pictures.empty() && decoder.pendingFrames() > decoder.pipelineFrames()
&& nowUs() - decoderProgressAt > 2000000) {
DEBUG_ERROR(DEBUG_CATEGORY_CALL, "video decoder stalled call=%llu pending=%u pipeline=%u progress_age_us=%lld",
@@ -452,7 +469,8 @@ void CallVideoEngine::receive() {
}
const int64_t started = nowUs();
int result = decoder.submit(input);
decodeMax = std::max(decodeMax, nowUs() - started);
const int64_t finished = nowUs();
decodeMax = std::max(decodeMax, finished - started); recordDeadlineWork("input", started, finished);
if (result) {
worked = true;
if (result > 0) {
@@ -479,13 +497,17 @@ void CallVideoEngine::receive() {
if (now - reportAt >= 1000000) {
DEBUG_DEBUG(DEBUG_CATEGORY_CALL, "video RX worker call=%llu interval_us=%lld decoded=%u decode_max_us=%lld "
"rx_to_decode_max_us=%lld wake_late_max_us=%lld ready=%zu audio_valid=%d audio_measured=%d "
"audio_pts=%lld played=%llu written=%llu mono_us=%lld submitted=%u presented=%u encoded=%u inflight=%u total=%u",
"audio_pts=%lld played=%llu written=%llu mono_us=%lld submitted=%u presented=%u encoded=%u inflight=%u total=%u "
"decode_deadline_misses=%u decode_deadline_max_us=%lld decode_deadline_stage=%s "
"decode_deadline_work_us=%lld decode_deadline_margin_us=%lld",
(unsigned long long)m->id, (long long)(now - reportAt), decoded, (long long)decodeMax, (long long)rxAgeMax,
(long long)wakeLateMax, pictures.size(), clock.valid, clock.measured, (long long)clock.pts_us,
(unsigned long long)clock.played_samples, (unsigned long long)clock.written_samples, (long long)now,
submitted, acknowledged, status.rx_frames, decoder.pendingFrames(), total);
submitted, acknowledged, status.rx_frames, decoder.pendingFrames(), total, decodeDeadlineMisses,
(long long)decodeDeadlineMax, decodeDeadlineStage, (long long)decodeDeadlineWork, (long long)decodeDeadlineMargin);
reportAt = now; decoded = 0; decodeMax = rxAgeMax = wakeLateMax = 0;
submitted = acknowledged = 0;
decodeDeadlineMisses = 0; decodeDeadlineMax = decodeDeadlineWork = decodeDeadlineMargin = 0; decodeDeadlineStage = "none";
}
if (worked) { requestedWake = 0; continue; }
// VIDEO_OFF пока отсутствует в протоколе: убираем застывшую картинку после прекращения показа.