From d8ff159e37cb3768358b350b2dc80118d81d4b2c Mon Sep 17 00:00:00 2001 From: Mark Farrugia Date: Thu, 25 Oct 2018 16:13:19 +1100 Subject: Refactor core_internal.h to core.h Signed-off-by: Mark Farrugia --- core.h | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 core.h (limited to 'core.h') diff --git a/core.h b/core.h new file mode 100644 index 0000000..ca47067 --- /dev/null +++ b/core.h @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AVIRT - ALSA Virtual Soundcard + * + * Copyright (c) 2010-2018 Fiberdyne Systems Pty Ltd + * + * core.h - AVIRT internal header + */ + +#ifndef __SOUND_AVIRT_CORE_H +#define __SOUND_AVIRT_CORE_H + +#include + +#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; + bool streams_sealed; +}; + +/** + * __avirt_configfs_init - Initialise the configfs system + * @core: The avirt_core pointer + * @return: 0 on success, negative ERRNO on failure + */ +int __init __avirt_configfs_init(struct avirt_core *core); + +/** + * __avirt_configfs_exit - Clean up and exit the configfs system + * @core: The avirt_core pointer + */ +void __exit __avirt_configfs_exit(struct avirt_core *core); + +/** + * __avirt_streams_seal - Register the sound card to user space + * @return: 0 on success, negative ERRNO on failure + */ +int __avirt_streams_seal(void); + +/** + * __avirt_streams_sealed - Check whether the streams have been sealed or not + * @return: true if sealed, false otherwise + */ +bool __avirt_streams_sealed(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 /* __SOUND_AVIRT_CORE_H */ -- cgit 1.2.3-korg