F5OEO-tstools/fmtx.c

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3.2 KiB
C
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/*
* Support for formatting time stamps
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPEG TS, PS and ES tools.
*
* The Initial Developer of the Original Code is Amino Communications Ltd.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Amino Communications Ltd, Swavesey, Cambridge UK
*
* ***** END LICENSE BLOCK *****
*/
#include <stdio.h>
#ifdef _WIN32
#include <stddef.h>
#else // _WIN32
#include <unistd.h>
#endif // _WIN32
#include <string.h>
#include "compat.h"
#include "fmtx.h"
static TCHAR fmtx_buffers[FMTX_BUFFERS_COUNT][FMTX_BUFFER_SIZE];
static int fmtx_buf_no = 0;
TCHAR *fmtx_alloc()
{
const int n = fmtx_buf_no++ % FMTX_BUFFERS_COUNT;
return fmtx_buffers[n];
}
int frac_27MHz(int64 n)
{
return (int)((n < 0 ? -n : n) % 300LL);
}
const TCHAR *fmtx_timestamp(int64 n, unsigned int flags)
{
TCHAR *buf = fmtx_alloc();
int64 n27 = n * ((flags & FMTX_TS_N_27MHz) != 0 ? 1LL : 300LL);
switch (flags & FMTX_TS_DISPLAY_MASK)
{
default:
case FMTX_TS_DISPLAY_90kHz_RAW:
_stprintf(buf, _T("%") I64FMT _T("dt"), n27 / 300LL);
break;
case FMTX_TS_DISPLAY_27MHz_RAW:
_stprintf(buf, _T("%") I64FMT _T("d:%03dt"), n27 / 300LL, frac_27MHz(n27));
break;
case FMTX_TS_DISPLAY_90kHz_32BIT:
{
int64 n90 = n27 / 300LL;
TCHAR * p = buf;
if (n90 < 0)
*p++ = _T('-');
_stprintf(p, _T("%ut"), (unsigned int)(n90 < 0 ? -n90 : n90));
break;
}
case FMTX_TS_DISPLAY_ms:
// No timestamp when converted into ms should exceed 32bits
_stprintf(buf, _T("%dms"), (int)(n27 / 27000LL));
break;
case FMTX_TS_DISPLAY_HMS:
{
unsigned int h, m, s, f;
int64 a27 = n27 < 0 ? -n27 : n27;
a27 /= I64K(27); //us
f = (unsigned int)(a27 % I64K(1000000));
a27 /= I64K(1000000);
s = (unsigned int)(a27 % I64K(60));
a27 /= I64K(60);
m = (unsigned int)(a27 % I64K(60));
h = (unsigned int)(a27 / I64K(60));
_stprintf(buf, "%s%u:%02u:%02u.%04u", n27 < 0 ? "-" : "", h, m, s, f/1000);
break;
}
}
return (const TCHAR *)buf;
}
static const struct s2tsfss
{
const char * str;
int flags;
} s2tsf[] =
{
{"hms", FMTX_TS_DISPLAY_HMS},
{"ms", FMTX_TS_DISPLAY_ms},
{"90", FMTX_TS_DISPLAY_90kHz_RAW},
{"32", FMTX_TS_DISPLAY_90kHz_32BIT},
{"27", FMTX_TS_DISPLAY_27MHz_RAW},
{NULL, -1}
};
int fmtx_str_to_timestamp_flags(const TCHAR *arg_str)
{
const struct s2tsfss * p;
for (p = s2tsf; p->str != NULL; ++p)
{
if (strcmp(p->str, arg_str) == 0)
break;
}
return p->flags;
}
// Local Variables:
// tab-width: 8
// indent-tabs-mode: nil
// c-basic-offset: 2
// End:
// vim: set tabstop=8 shiftwidth=2 expandtab: