| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2006 Smartjog S.A.S, Baptiste Coudurier <baptiste.coudurier@gmail.com> | ||
| 3 | * Copyright (c) 2011-2012 Smartjog S.A.S, Clément Bœsch <clement.boesch@smartjog.com> | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "timecode_internal.h" | ||
| 23 | |||
| 24 | 4104 | static unsigned bcd2uint(uint8_t bcd) | |
| 25 | { | ||
| 26 | 4104 | unsigned low = bcd & 0xf; | |
| 27 | 4104 | unsigned high = bcd >> 4; | |
| 28 |
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4104 | if (low > 9 || high > 9) |
| 29 | ✗ | return 0; | |
| 30 | 4104 | return low + 10*high; | |
| 31 | } | ||
| 32 | |||
| 33 | 1026 | void ff_timecode_set_smpte(unsigned *drop, unsigned *hh, unsigned *mm, unsigned *ss, unsigned *ff, | |
| 34 | AVRational rate, uint32_t tcsmpte, int prevent_df, int skip_field) | ||
| 35 | { | ||
| 36 | 1026 | *hh = bcd2uint(tcsmpte & 0x3f); // 6-bit hours | |
| 37 | 1026 | *mm = bcd2uint(tcsmpte>>8 & 0x7f); // 7-bit minutes | |
| 38 | 1026 | *ss = bcd2uint(tcsmpte>>16 & 0x7f); // 7-bit seconds | |
| 39 | 1026 | *ff = bcd2uint(tcsmpte>>24 & 0x3f); // 6-bit frames | |
| 40 |
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1026 | *drop = tcsmpte & 1<<30 && !prevent_df; // 1-bit drop if not arbitrary bit |
| 41 | |||
| 42 |
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1026 | if (av_cmp_q(rate, (AVRational) {30, 1}) == 1) { |
| 43 | 47 | *ff <<= 1; | |
| 44 |
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47 | if (!skip_field) { |
| 45 |
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43 | if (av_cmp_q(rate, (AVRational) {50, 1}) == 0) |
| 46 | 43 | *ff += !!(tcsmpte & 1 << 7); | |
| 47 | else | ||
| 48 | ✗ | *ff += !!(tcsmpte & 1 << 23); | |
| 49 | } | ||
| 50 | } | ||
| 51 | 1026 | } | |
| 52 |