89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/***
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Oak - Non-Linear Video Editor
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Copyright (C) 2026 Oak Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "timecodemetadata.h"
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#include <limits>
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#include <numeric>
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#include "olive/core/util/timecodefunctions.h"
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namespace olive
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{
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TimecodeMetadata::SourceTime TimecodeMetadata::FromTimecodeString(
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const QString &timecode, const core::rational &timebase)
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{
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SourceTime result;
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const QString trimmed = timecode.trimmed();
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if (trimmed.isEmpty()) {
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return result;
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}
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bool ok = false;
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const core::Timecode::Display display =
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trimmed.contains(';') ? core::Timecode::kTimecodeDropFrame
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: core::Timecode::kTimecodeNonDropFrame;
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result.time = core::Timecode::timecode_to_time(trimmed.toStdString(),
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timebase, display, &ok);
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result.valid = ok;
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if (ok) {
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result.source = QStringLiteral("timecode");
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}
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return result;
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}
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TimecodeMetadata::SourceTime TimecodeMetadata::FromBwfTimeReference(
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const QString &time_reference, int sample_rate)
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{
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SourceTime result;
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if (sample_rate <= 0) {
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return result;
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}
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bool ok = false;
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const qulonglong samples = time_reference.trimmed().toULongLong(&ok);
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if (!ok) {
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return result;
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}
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qulonglong numerator = samples;
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qulonglong denominator = static_cast<qulonglong>(sample_rate);
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const qulonglong divisor = std::gcd(numerator, denominator);
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numerator /= divisor;
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denominator /= divisor;
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const qulonglong rational_limit =
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static_cast<qulonglong>(std::numeric_limits<int>::max());
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if (numerator <= rational_limit && denominator <= rational_limit) {
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result.time =
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core::rational(static_cast<int>(numerator),
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static_cast<int>(denominator));
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} else {
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result.time = core::rational::fromDouble(
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static_cast<double>(samples) / static_cast<double>(sample_rate));
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}
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result.source = QStringLiteral("bwf_time_reference");
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result.valid = true;
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return result;
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}
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}
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