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/*
* BlueALSA - cmd-open.c
* Copyright (c) 2016-2024 Arkadiusz Bokowy
*
* This file is a part of bluez-alsa.
*
* This project is licensed under the terms of the MIT license.
*
*/
#include <errno.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dbus/dbus.h>
#include "cli.h"
#include "shared/dbus-client-pcm.h"
#include "shared/hex.h"
static void usage(const char *command) {
printf("Transfer raw PCM data via stdin or stdout.\n\n");
cli_print_usage("%s [OPTION]... PCM-PATH", command);
printf("\nOptions:\n"
" -h, --help\t\tShow this message and exit\n"
" -x, --hex\t\tTransfer data in hexadecimal format\n"
"\nPositional arguments:\n"
" PCM-PATH\tBlueALSA PCM D-Bus object path\n"
);
}
static int cmd_open_func(int argc, char *argv[]) {
int opt;
const char *opts = "hqvx";
const struct option longopts[] = {
{ "help", no_argument, NULL, 'h' },
{ "quiet", no_argument, NULL, 'q' },
{ "verbose", no_argument, NULL, 'v' },
{ "hex", no_argument, NULL, 'x' },
{ 0 },
};
bool hex = false;
opterr = 0;
while ((opt = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
if (cli_parse_common_options(opt))
continue;
switch (opt) {
case 'h' /* --help */ :
usage(argv[0]);
return EXIT_SUCCESS;
case 'x' /* --hex */ :
hex = true;
break;
default:
cmd_print_error("Invalid argument '%s'", argv[optind - 1]);
return EXIT_FAILURE;
}
}
if (argc - optind < 1) {
cmd_print_error("Missing BlueALSA PCM path argument");
return EXIT_FAILURE;
}
if (argc - optind > 2) {
cmd_print_error("Invalid number of arguments");
return EXIT_FAILURE;
}
const char *path = argv[optind];
if (!dbus_validate_path(path, NULL)) {
cmd_print_error("Invalid PCM path: %s", path);
return EXIT_FAILURE;
}
int fd_pcm, fd_pcm_ctrl;
int fd_input, fd_output;
size_t len = strlen(path);
DBusError err = DBUS_ERROR_INIT;
if (!ba_dbus_pcm_open(&config.dbus, path, &fd_pcm, &fd_pcm_ctrl, &err)) {
cmd_print_error("Couldn't open PCM: %s", err.message);
return EXIT_FAILURE;
}
if (strcmp(path + len - strlen("source"), "source") == 0) {
fd_input = fd_pcm;
fd_output = STDOUT_FILENO;
}
else {
fd_input = STDIN_FILENO;
fd_output = fd_pcm;
}
uint8_t buffer[4096];
uint8_t buffer_hex[sizeof(buffer) * 2 + 1];
ssize_t count;
while ((count = read(fd_input, buffer, sizeof(buffer))) > 0) {
const uint8_t *pos = buffer;
ssize_t written = 0;
if (hex) {
if (fd_input == STDIN_FILENO) {
if ((count = hex2bin((const char *)buffer, buffer, count)) == -1) {
cmd_print_error("Couldn't decode hex string: %s", strerror(errno));
continue;
}
}
if (fd_output == STDOUT_FILENO) {
count = bin2hex(buffer, (char *)buffer_hex, count);
pos = buffer_hex;
}
}
while (written < count) {
ssize_t res = write(fd_output, pos, count - written);
if (res <= 0) {
/* Cannot write any more, so just terminate */
goto finish;
}
written += res;
pos += res;
}
}
if (fd_output == fd_pcm)
ba_dbus_pcm_ctrl_send_drain(fd_pcm_ctrl, &err);
finish:
close(fd_pcm);
close(fd_pcm_ctrl);
return EXIT_SUCCESS;
}
const struct cli_command cmd_open = {
"open",
"Transfer raw PCM via stdin or stdout",
cmd_open_func,
};
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