diff options
| -rw-r--r-- | CMakeLists.txt | 32 | ||||
| -rw-r--r-- | include/avirt.h | 29 | ||||
| -rw-r--r-- | src/avirt-config.c | 120 |
3 files changed, 181 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..9af162f --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,32 @@ +#************************************************************************* +# +# FIBERDYNE CONFIDENTIAL +# __________________ +# +# [2010] - [2017] Fiberdyne Systems Pty Ltd +# All Rights Reserved. +# +# NOTICE: All information contained herein is, and remains +# the property of Fiberdyne Systems Pty Ltd and its suppliers, +# if any. The intellectual and technical concepts contained +# herein are proprietary to Fiberdyne Systems Pty Ltd +# and its suppliers and may be covered by U.S. and Foreign Patents, +# patents in process, and are protected by trade secret or copyright law. +# Dissemination of this information or reproduction of this material +# is strictly forbidden unless prior written permission is obtained +# from Fiberdyne Systems Pty Ltd. +# +#************************************************************************* + +#------------------------------------------------------------------------------- +# LIBAVIRT CONFIGURATION LIBRARY +#------------------------------------------------------------------------------- + +# Defines +add_definitions(-D_GNU_SOURCE) + +# Target +add_library(avirt STATIC src/avirt_*.c) + +# Target includes +target_include_directories(avirt PUBLIC include) diff --git a/include/avirt.h b/include/avirt.h new file mode 100644 index 0000000..5bb8731 --- /dev/null +++ b/include/avirt.h @@ -0,0 +1,29 @@ +/* + * AVIRT User-space library + * + * avirt.h - AVIRT User-space library header + * + * Copyright (C) 2018 Fiberdyne Systems Pty Ltd + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _AVIRT_H_ +#define _AVIRT_H_ + +int AVIRT_CreateStream(const char *name, unsigned int channels, int direction); + +int AVIRT_SealCard(); + +#endif // _AVIRT_H_ diff --git a/src/avirt-config.c b/src/avirt-config.c new file mode 100644 index 0000000..f819c65 --- /dev/null +++ b/src/avirt-config.c @@ -0,0 +1,120 @@ +/* + * AVIRT User-space library + * + * avirt-config.c - Main AVIRT configuration via configfs + * + * Copyright (C) 2018 Fiberdyne Systems Pty Ltd + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "avirt-config.h" + +#include <stdbool.h> +#include <alsa/asoundlib.h> +#include <sys/stat.h> +#include <sys/mount.h> + +#define AVIRT_CONFIGFS_PATH_STREAMS "/config/avirt/streams/" +#define AVIRT_CONFIGFS_PATH_MAXLEN 64 + +static bool configfs_mounted = false; + +static int mount_configfs() +{ + int err; + + err = mount("none", "/config", "configfs", 0, NULL); + if (!err) + configfs_mounted = true; + else + printf("AVIRT ERROR: Failed to mount configfs filesystem!"); + + return err; +} + +int AVIRT_CreateStream(const char *name, unsigned int channels, int direction) +{ + int err; + char path[AVIRT_CONFIGFS_PATH_MAXLEN]; + char path_chans[AVIRT_CONFIGFS_PATH_MAXLEN]; + FILE *fd; + + if (!configfs_mounted) { + err = mount_configfs(); + if (err < 0) + return err; + } + + strcpy(path, AVIRT_CONFIGFS_PATH_STREAMS); + switch (direction) { + case SND_PCM_STREAM_PLAYBACK: + strcat(path, "playback_"); + break; + case SND_PCM_STREAM_CAPTURE: + strcat(path, "capture_"); + break; + default: + return -EINVAL; + } + + if ((AVIRT_CONFIGFS_PATH_MAXLEN - strlen(path)) < strlen(name)) + { + printf("AVIRT ERROR: Cannot create stream '%s' since name is too long!", name); + return -ENOMEM; + } + + strcat(path, name); + err = mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO); + if (err < 0) + { + printf("AVIRT ERROR: Cannot create stream '%s' at directory '%s'\n", name, path); + return err; + } + + strcpy(path_chans, path); + strcat(path_chans, "/channels"); + fd = fopen(path_chans, "w"); + if (!fd) + { + printf("AVIRT ERROR: Failed to open file at '%s'", path_chans); + return -1; + } + + fprintf(fd, "%d", channels); + + return 0; +} + +int AVIRT_SealCard() +{ + int err; + + if (!configfs_mounted) { + err = mount_configfs(); + if (err < 0) + return err; + } + + strcpy(path_sealed, AVIRT_); + strcat(path_chans, "/sealed"); + fd = fopen(path_chans, "w"); + if (!fd) + { + printf("AVIRT ERROR: Failed to open file at '%s'", path_chans); + return -1; + } + + fprintf(fd, "%d", 1); +} |