| @ -0,0 +1,70 @@ | |||
| /***************************************************************************** | |||
| * datetime.h: ETSI EN 300 468 Date and time functions | |||
| ***************************************************************************** | |||
| * Copyright (C) 2009-2010 VideoLAN | |||
| * | |||
| * Authors: Christophe Massiot <massiot@via.ecp.fr> | |||
| * | |||
| * Permission is hereby granted, free of charge, to any person obtaining | |||
| * a copy of this software and associated documentation files (the | |||
| * "Software"), to deal in the Software without restriction, including | |||
| * without limitation the rights to use, copy, modify, merge, publish, | |||
| * distribute, sublicense, and/or sell copies of the Software, and to | |||
| * permit persons to whom the Software is furnished to do so, subject | |||
| * to the following conditions: | |||
| * | |||
| * The above copyright notice and this permission notice shall be | |||
| * included in all copies or substantial portions of the Software. | |||
| * | |||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |||
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | |||
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |||
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |||
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||
| *****************************************************************************/ | |||
| #include <bitstream/common.h> | |||
| /* | |||
| * Normative references: | |||
| * - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems) | |||
| */ | |||
| #ifndef __BITSTREAM_DVB_DATETIME_H__ | |||
| #define __BITSTREAM_DVB_DATETIME_H__ | |||
| #ifdef __cplusplus | |||
| extern "C" | |||
| { | |||
| #endif | |||
| /***************************************************************************** | |||
| * DVB Date and time functions | |||
| *****************************************************************************/ | |||
| /* EN 300 468 Annex C, year is from 1900 */ | |||
| static inline uint16_t dvb_mjd_set(int y, int m, int d) | |||
| { | |||
| int l = (m == 1 || m == 2) ? 1 : 0; | |||
| int mjd = 14956 + d + (y - l) * 1461 / 4 + (m + 1 + l * 12) * 306001 / 10000; | |||
| return (uint16_t)mjd; | |||
| } | |||
| static inline void dvb_mjd_get(uint16_t mjd, int *y, int *m, int *d) | |||
| { | |||
| int k; | |||
| int yp = (mjd * 20 - 301564) / 7305; | |||
| int mp = (mjd * 10000 - 149561000 - yp * 3652500) / 306001; | |||
| *d = mjd - 14956 - yp * 1461 / 4 - mp * 306001 / 10000; | |||
| k = (mp == 14 || mp == 15) ? 1 : 0; | |||
| *y = yp + k; | |||
| *m = mp - 1 - k * 12; | |||
| } | |||
| #ifdef __cplusplus | |||
| } | |||
| #endif | |||
| #endif | |||