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 24static 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