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Add some checks for NAN in video playback.

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This commit is contained in:
John Preston 2021-08-23 20:29:40 +03:00
parent c8d1e01159
commit e8f1373edc
1 changed files with 25 additions and 1 deletions
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26
Telegram/SourceFiles/media/streaming/media_streaming_video_track.cpp
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@ -13,6 +13,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include "core/crash_reports.h" #include "core/crash_reports.h"
#include "zlib.h" #include "zlib.h"
#include <cfenv>
extern "C" { extern "C" {
extern int __isa_available; extern int __isa_available;
@ -825,6 +826,8 @@ void VideoTrackObject::callReady() {
} }
TimePoint VideoTrackObject::trackTime() const { TimePoint VideoTrackObject::trackTime() const {
const auto errors1 = std::fetestexcept(FE_ALL_EXCEPT);
debugAssertKnownTime(7, _syncTimePoint.trackTime); debugAssertKnownTime(7, _syncTimePoint.trackTime);
auto result = TimePoint(); auto result = TimePoint();
@ -852,7 +855,28 @@ TimePoint VideoTrackObject::trackTime() const {
} }
const auto adjust = (result.worldTime - _syncTimePoint.worldTime); const auto adjust = (result.worldTime - _syncTimePoint.worldTime);
const auto adjustSpeed = adjust * _options.speed; const auto adjustSpeed = adjust * _options.speed;
const auto roundAdjustSpeed = std::round(adjustSpeed); const auto errors2 = std::fetestexcept(FE_ALL_EXCEPT);
auto roundAdjustSpeed = std::round(adjustSpeed);
if (std::isnan(roundAdjustSpeed)) {
TO_LOG(("NAN1,errors1:%1,errors2:%2,errors:%3").arg(errors1).arg(errors2).arg(std::fetestexcept(FE_ALL_EXCEPT)));
roundAdjustSpeed = std::round(adjustSpeed);
if (!std::isnan(roundAdjustSpeed)) {
TO_LOG(("WELL2,adjust:%1,rounded:%2").arg(adjustSpeed).arg(roundAdjustSpeed));
debugAssertKnownTime(-1, kTimeUnknown);
} else {
TO_LOG(("NAN2,adjust:%1").arg(adjustSpeed));
}
std::feclearexcept(FE_ALL_EXCEPT);
const auto errors3 = std::fetestexcept(FE_ALL_EXCEPT);
roundAdjustSpeed = std::round(adjustSpeed);
if (!std::isnan(roundAdjustSpeed)) {
TO_LOG(("WELL3,adjust:%1,rounded:%2").arg(adjustSpeed).arg(roundAdjustSpeed));
debugAssertKnownTime(-2, kTimeUnknown);
} else {
TO_LOG(("NAN3,adjust:%1,errors3:%2,errors:%3").arg(adjustSpeed).arg(errors3).arg(std::fetestexcept(FE_ALL_EXCEPT)));
}
TO_LOG(("qRound:%1,qRound64:%2").arg(qRound(adjustSpeed)).arg(qRound64(adjustSpeed)));
}
auto timeRoundAdjustSpeed = crl::time(roundAdjustSpeed); auto timeRoundAdjustSpeed = crl::time(roundAdjustSpeed);
const auto fpuErrorHappened = [](crl::time value) { const auto fpuErrorHappened = [](crl::time value) {
return uint64(value) == 0x8000'0000'0000'0000ULL return uint64(value) == 0x8000'0000'0000'0000ULL