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media: implement importing SRT files

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This commit is contained in:
itsmattkc
2022-05-11 13:48:59 -07:00
parent f17c119c29
commit 83e7707025
19 changed files with 517 additions and 76 deletions
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app/common/timecodefunctions.cpp
+14 -3
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@@ -20,6 +20,10 @@
#include "timecodefunctions.h"
extern "C" {
#include <libavutil/mathematics.h>
}
#include <QtMath>
#include "config/config.h"
@@ -254,7 +258,14 @@ rational Timecode::snap_time_to_timebase(const rational &time, const rational &t
rational Timecode::timestamp_to_time(const int64_t &timestamp, const rational &timebase)
{
return rational(timestamp) * timebase;
int64_t num = int64_t(timebase.numerator()) * timestamp;
int64_t den = timebase.denominator();
int num_r, den_r;
av_reduce(&num_r, &den_r, num, den, INT_MAX);
return rational(num_r, den_r);
}
QString Timecode::time_to_timecode(const rational &time, const rational &timebase, const Timecode::Display &display, bool show_plus_if_positive)
@@ -310,7 +321,7 @@ int64_t Timecode::rescale_timestamp(const int64_t &ts, const rational &source, c
return ts;
}
return qRound64(static_cast<double>(ts) * source.toDouble() / dest.toDouble());
return av_rescale_q(ts, source.toAVRational(), dest.toAVRational());
}
int64_t Timecode::rescale_timestamp_ceil(const int64_t &ts, const rational &source, const rational &dest)
@@ -319,7 +330,7 @@ int64_t Timecode::rescale_timestamp_ceil(const int64_t &ts, const rational &sour
return ts;
}
return qCeil(static_cast<double>(ts) * source.toDouble() / dest.toDouble());
return av_rescale_q_rnd(ts, source.toAVRational(), dest.toAVRational(), AV_ROUND_UP);
}
}