/*
* Copyright ( c ) 2006 Smartjog S . A . S , Baptiste Coudurier < baptiste . coudurier @ gmail . com >
* Copyright ( c ) 2011 - 2012 Smartjog S . A . S , Cl é ment B œ sch < clement . boesch @ smartjog . com >
*
* This file is part of FFmpeg .
*
* FFmpeg is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 . 1 of the License , or ( at your option ) any later version .
*
* FFmpeg is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 USA
*/
#include "timecode_internal.h"
static unsigned bcd2uint(uint8_t bcd)
{
unsigned low = bcd & 0 xf;
unsigned high = bcd >> 4 ;
if (low > 9 || high > 9 )
return 0 ;
return low + 10 *high;
}
void ff_timecode_set_smpte(unsigned *drop, unsigned *hh, unsigned *mm, unsigned *ss, unsigned *ff,
AVRational rate, uint32_t tcsmpte, int prevent_df, int skip_field)
{
*hh = bcd2uint(tcsmpte & 0 x3f); // 6-bit hours
*mm = bcd2uint(tcsmpte>>8 & 0 x7f); // 7-bit minutes
*ss = bcd2uint(tcsmpte>>16 & 0 x7f); // 7-bit seconds
*ff = bcd2uint(tcsmpte>>24 & 0 x3f); // 6-bit frames
*drop = tcsmpte & 1 <<30 && !prevent_df; // 1-bit drop if not arbitrary bit
if (av_cmp_q(rate, (AVRational) {30 , 1 }) == 1 ) {
*ff <<= 1 ;
if (!skip_field) {
if (av_cmp_q(rate, (AVRational) {50 , 1 }) == 0 )
*ff += !!(tcsmpte & 1 << 7 );
else
*ff += !!(tcsmpte & 1 << 23 );
}
}
}
Messung V0.5 in Prozent C=84 H=96 G=90
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
*© Formatika GbR, Deutschland