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37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "timestamp.h"
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char *av_ts_make_time_string2(char *buf, int64_t ts, AVRational tb)
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{
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if (ts == AV_NOPTS_VALUE) {
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snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
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} else {
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double val = av_q2d(tb) * ts;
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double log = (fpclassify(val) == FP_ZERO ? -INFINITY : floor(log10(fabs(val))));
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int precision = (isfinite(log) && log < 0) ? -log + 5 : 6;
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int last = snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.*f", precision, val);
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last = FFMIN(last, AV_TS_MAX_STRING_SIZE - 1) - 1;
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for (; last && buf[last] == '0'; last--);
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for (; last && buf[last] != 'f' && (buf[last] < '0' || buf[0] > '9'); last--);
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buf[last + 1] = '\0';
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}
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return buf;
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}
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