diff options
Diffstat (limited to 'core_internal.h')
| -rw-r--r-- | core_internal.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/core_internal.h b/core_internal.h new file mode 100644 index 0000000..3639d6e --- /dev/null +++ b/core_internal.h @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ALSA Virtual Soundcard + * + * core.h - Internal header for virtual ALSA card + * + * Copyright (C) 2010-2018 Fiberdyne Systems Pty Ltd + */ + +#ifndef __AVIRT_CORE_INTERNAL_H__ +#define __AVIRT_CORE_INTERNAL_H__ + +#include <avirt/core.h> + +#include "utils.h" + +struct avirt_core { + struct snd_card *card; + struct device *dev; + struct class *avirt_class; + struct config_group *stream_group; + unsigned int stream_count; +}; + +int __init __avirt_configfs_init(struct avirt_core *core); +void __exit __avirt_configfs_exit(struct avirt_core *core); + +/** + * __avirt_card_register - Register the sound card to user space + * @return: 0 on success, negative ERRNO on failure + */ +int __avirt_card_register(void); + +/** + * __avirt_stream_find_by_device - Get audio stream from device number + * @device: The PCM device number corresponding to the desired stream + * @return: The audio stream if found, or an error pointer otherwise + */ +struct avirt_stream *__avirt_stream_find_by_device(unsigned int device); + +/** + * __avirt_stream_create - Create audio stream, including it's ALSA PCM device + * @name: The name designated to the audio stream + * @direction: The PCM direction (SNDRV_PCM_STREAM_PLAYBACK or + * SNDRV_PCM_STREAM_CAPTURE) + * @return: The newly created audio stream if successful, or an error pointer + */ +struct avirt_stream *__avirt_stream_create(const char *name, int direction); + +#endif // __AVIRT_CORE_INTERNAL_H__ |