| | 1 | /* |
| | 2 | * This file is part of DisOrder |
| | 3 | * Copyright (C) 2004, 2007 Richard Kettlewell |
| | 4 | * |
| | 5 | * This program is free software: you can redistribute it and/or modify |
| | 6 | * it under the terms of the GNU General Public License as published by |
| | 7 | * the Free Software Foundation, either version 3 of the License, or |
| | 8 | * (at your option) any later version. |
| | 9 | * |
| | 10 | * This program is distributed in the hope that it will be useful, |
| | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 13 | * GNU General Public License for more details. |
| | 14 | * |
| | 15 | * You should have received a copy of the GNU General Public License |
| | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| | 17 | */ |
| | 18 | /** @file lib/mixer.h |
| | 19 | * @brief Mixer support |
| | 20 | */ |
| | 21 | |
| | 22 | #ifndef MIXER_H |
| | 23 | #define MIXER_H |
| | 24 | |
| | 25 | /** @brief Definition of a mixer */ |
| | 26 | struct mixer { |
| | 27 | /** @brief API used by this mixer */ |
| | 28 | int api; |
| | 29 | |
| | 30 | /** @brief Get the volume |
| | 31 | * @param left Where to store left-channel volume |
| | 32 | * @param right Where to store right-channel volume |
| | 33 | * @return 0 on success, non-0 on error |
| | 34 | */ |
| | 35 | int (*get)(int *left, int *right); |
| | 36 | |
| | 37 | /** @brief Set the volume |
| | 38 | * @param left Pointer to target left-channel volume |
| | 39 | * @param right Pointer to target right-channel volume |
| | 40 | * @return 0 on success, non-0 on error |
| | 41 | * |
| | 42 | * @p left and @p right are updated with the actual volume set. |
| | 43 | */ |
| | 44 | int (*set)(int *left, int *right); |
| | 45 | |
| | 46 | /** @brief Default device */ |
| | 47 | const char *device; |
| | 48 | |
| | 49 | /** @brief Default channel */ |
| | 50 | const char *channel; |
| | 51 | }; |
| | 52 | |
| | 53 | int mixer_control(int api, int *left, int *right, int set); |
| | 54 | const char *mixer_default_device(int api); |
| | 55 | const char *mixer_default_channel(int api); |
| | 56 | int mixer_supported(int api); |
| | 57 | |
| | 58 | extern const struct mixer mixer_oss; |
| | 59 | extern const struct mixer mixer_alsa; |
| | 60 | |
| | 61 | #endif /* MIXER_H */ |
| | 62 | |
| | 63 | /* |
| | 64 | Local Variables: |
| | 65 | c-basic-offset:2 |
| | 66 | comment-column:40 |
| | 67 | End: |
| | 68 | */ |
~mdw / disorder / blame_incremental