blob: e7f70c58f039c6b0eb25f3d18e5cedca4c40c1bb
| 1 | /* |
| 2 | * This file is part of FFmpeg. |
| 3 | * |
| 4 | * FFmpeg is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * FFmpeg is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Lesser General Public |
| 15 | * License along with FFmpeg; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | |
| 19 | #ifndef AVCODEC_DVAUDIO_H |
| 20 | #define AVCODEC_DVAUDIO_H |
| 21 | |
| 22 | #include <stdint.h> |
| 23 | |
| 24 | static inline int dv_get_audio_sample_count(const uint8_t *buffer, int dsf) |
| 25 | { |
| 26 | int samples = buffer[0] & 0x3f; /* samples in this frame - min samples */ |
| 27 | |
| 28 | switch ((buffer[3] >> 3) & 0x07) { |
| 29 | case 0: |
| 30 | return samples + (dsf ? 1896 : 1580); |
| 31 | case 1: |
| 32 | return samples + (dsf ? 1742 : 1452); |
| 33 | case 2: |
| 34 | default: |
| 35 | return samples + (dsf ? 1264 : 1053); |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | #endif /* AVCODEC_DVAUDIO_H */ |
| 40 |