diff options
Diffstat (limited to 'src/audiomixer.h')
-rw-r--r-- | src/audiomixer.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/audiomixer.h b/src/audiomixer.h new file mode 100644 index 0000000..cc67a83 --- /dev/null +++ b/src/audiomixer.h @@ -0,0 +1,71 @@ +/* + * Copyright © 2019 Collabora Ltd. + * @author George Kiagiadakis <george.kiagiadakis@collabora.com> + * + * SPDX-License-Identifier: MIT + */ + +#ifndef _AUDIOMIXER_H +#define _AUDIOMIXER_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <stdbool.h> + +struct audiomixer; + +struct mixer_control +{ + char name[32]; + double volume; + bool mute; +}; + +struct audiomixer_events +{ + void (*controls_changed) (void *data); + + void (*value_changed) (void *data, +#define MIXER_CONTROL_CHANGE_FLAG_VOLUME (1<<0) +#define MIXER_CONTROL_CHANGE_FLAG_MUTE (1<<1) + unsigned int change_mask, + const struct mixer_control *control); +}; + +struct audiomixer * audiomixer_new(void); +void audiomixer_free(struct audiomixer *self); + +/* locking is required to call any of the methods below + * and to access any structure maintained by audiomixer */ +void audiomixer_lock(struct audiomixer *self); +void audiomixer_unlock(struct audiomixer *self); + +int audiomixer_ensure_controls(struct audiomixer *self, int timeout_sec); + +const struct mixer_control ** audiomixer_get_active_controls( + struct audiomixer *self, + unsigned int *n_controls); + +const struct mixer_control * audiomixer_find_control( + struct audiomixer *self, + const char *name); + +void audiomixer_add_event_listener(struct audiomixer *self, + const struct audiomixer_events *events, + void *data); + +void audiomixer_change_volume(struct audiomixer *self, + const struct mixer_control *control, + double volume); + +void audiomixer_change_mute(struct audiomixer *self, + const struct mixer_control *control, + bool mute); + +#ifdef __cplusplus +} +#endif + +#endif // _AUDIOMIXER_H |