itsmattkc
2fdf78df4a
FFmpegDecoder now implements an "indexer" for audio, which actually just extracts the raw PCM audio from an audio codec and saves it to disk
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive 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 "timecodefunctions.h"
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#include <QtMath>
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#include "config/config.h"
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QString padded(int arg, int padding) {
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return QString("%1").arg(arg, padding, 10, QChar('0'));
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}
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QString olive::timestamp_to_timecode(const int64_t ×tamp,
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const rational& timebase,
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const TimecodeDisplay& display,
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bool show_plus_if_positive)
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{
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double timestamp_dbl = (rational(timestamp) * timebase).toDouble();
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// Determine what symbol to separate frames (";" is used for drop frame, ":" is non-drop frame)
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QString frame_token = ";";
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switch (display) {
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case kTimecodeNonDropFrame:
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frame_token = ":";
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// Convert timestamp from drop frame to non-drop frame
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// FIXME: There's probably a better way to do this
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if (timebase == rational(1001, 30000)) {
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timestamp_dbl = timestamp_dbl / (30000.0/1001.0) * 30.0;
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} else if (timebase == rational(1001, 60000)) {
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timestamp_dbl = timestamp_dbl / (60000.0/1001.0) * 60.0;
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} else if (timebase == rational(1001, 24000)) {
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timestamp_dbl = timestamp_dbl / (24000.0/1001.0) * 24.0;
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}
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/* fall-through */
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case kTimecodeDropFrame:
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case kTimecodeSeconds:
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{
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QString prefix;
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if (timestamp_dbl < 0) {
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prefix = "-";
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} else if (show_plus_if_positive) {
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prefix = "+";
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}
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timestamp_dbl = qAbs(timestamp_dbl);
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int total_seconds = qFloor(timestamp_dbl);
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int hours = total_seconds / 3600;
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int mins = total_seconds / 60 - hours * 60;
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int secs = total_seconds - mins * 60;
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if (display == kTimecodeSeconds) {
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int fraction = qRound((timestamp_dbl - total_seconds) * 1000);
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return QString("%1%2:%3:%4.%5").arg(prefix,
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padded(hours, 2),
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padded(mins, 2),
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padded(secs, 2),
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padded(fraction, 3));
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} else {
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rational frame_rate = timebase.flipped();
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int frames = qRound((timestamp_dbl - total_seconds) * frame_rate.toDouble());
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return QString("%1%2:%3:%4%5%6").arg(prefix,
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padded(hours, 2),
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padded(mins, 2),
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padded(secs, 2),
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frame_token,
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padded(frames, 2));
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}
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}
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case kFrames:
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return QString::number(timestamp);
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case kMilliseconds:
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return QString::number(qRound(timestamp_dbl * 1000));
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}
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return QString();
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}
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rational olive::timestamp_to_time(const int64_t ×tamp, const rational &timebase)
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{
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return rational(timestamp) * timebase;
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}
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int64_t olive::time_to_timestamp(const rational &time, const rational &timebase)
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{
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return qRound64(time.toDouble() * timebase.flipped().toDouble());
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}
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olive::TimecodeDisplay olive::CurrentTimecodeDisplay()
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{
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return static_cast<olive::TimecodeDisplay>(Config::Current()["TimecodeDisplay"].toInt());
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}
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