Tuukka Pasanen
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021-2022 Hans Petter Selasky
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#include <sysexits.h>
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#include <stdarg.h>
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#include <fcntl.h>
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#include "virtual_oss.h"
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static void
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message(const char *fmt, ...)
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{
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va_list list;
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va_start(list, fmt);
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vfprintf(stderr, fmt, list);
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va_end(list);
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}
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static void
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usage(void)
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{
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message("Usage: virtual_oss_cmd /dev/vdsp.ctl [command line arguments to pass to virtual_oss]\n");
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exit(EX_USAGE);
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}
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int
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main(int argc, char **argv)
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{
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char options[VIRTUAL_OSS_OPTIONS_MAX] = {};
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size_t offset = 0;
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size_t len = VIRTUAL_OSS_OPTIONS_MAX - 1;
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int fd;
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/* check if no options */
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if (argc < 2)
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usage();
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fd = open(argv[1], O_RDWR);
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if (fd < 0)
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errx(EX_SOFTWARE, "Could not open '%s'", argv[1]);
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for (int x = 2; x != argc; x++) {
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size_t tmp = strlen(argv[x]) + 1;
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if (tmp > len)
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errx(EX_SOFTWARE, "Too many options passed");
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memcpy(options + offset, argv[x], tmp);
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options[offset + tmp - 1] = ' ';
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offset += tmp;
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len -= tmp;
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}
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if (options[0] == 0) {
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struct virtual_oss_system_info info;
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if (ioctl(fd, VIRTUAL_OSS_GET_SYSTEM_INFO, &info) < 0)
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errx(EX_SOFTWARE, "Cannot get system information");
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info.rx_device_name[sizeof(info.rx_device_name) - 1] = 0;
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info.tx_device_name[sizeof(info.tx_device_name) - 1] = 0;
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printf("Sample rate: %u Hz\n"
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"Sample width: %u bits\n"
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"Sample channels: %u\n"
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"Output jitter: %u / %u\n"
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"Input device name: %s\n"
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"Output device name: %s\n",
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info.sample_rate,
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info.sample_bits,
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info.sample_channels,
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info.tx_jitter_down,
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info.tx_jitter_up,
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info.rx_device_name,
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info.tx_device_name);
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} else {
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/* execute options */
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if (ioctl(fd, VIRTUAL_OSS_ADD_OPTIONS, options) < 0)
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errx(EX_SOFTWARE, "One or more invalid options");
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/* show error, if any */
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if (options[0] != '\0')
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errx(EX_SOFTWARE, "%s", options);
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}
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close(fd);
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return (0);
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}
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