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update ARD - allow to release it as standalone tool.

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see https://github.com/x42/alsa_request_device
This commit is contained in:
Robin Gareus 2014-06-29 21:19:04 +02:00
parent cbdeaefa1c
commit c1ae35242b
2 changed files with 20 additions and 8 deletions
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26
libs/ardouralsautil/request_device.c
View File

@ -31,6 +31,16 @@
#include "ardouralsautil/reserve.h"
#ifndef ARD_PROG_NAME
#define ARD_PROG_NAME "alsa_request_device"
#endif
#ifndef ARD_APPL_NAME
#define ARD_APPL_NAME "ALSA User"
#endif
#ifndef VERSION
#define VERSION "v0.3"
#endif
static int run = 1;
static int release_wait_for_signal = 0;
static pid_t parent_pid = 0;
@ -48,7 +58,7 @@ static int stdin_available(void) {
}
static void print_version(int status) {
printf ("ardour-request-device 0.2\n\n");
printf (ARD_PROG_NAME " " VERSION "\n\n");
printf (
"Copyright (C) 2014 Robin Gareus <robin@gareus.org>\n"
"This is free software; see the source for copying conditions. There is NO\n"
@ -58,8 +68,8 @@ static void print_version(int status) {
}
static void usage(int status) {
printf ("ardour-request-device - DBus Audio Reservation Utility.\n");
printf ("Usage: ardour-request-device [ OPTIONS ] <Audio-Device-ID>\n");
printf (ARD_PROG_NAME " - DBus Audio Reservation Utility.\n");
printf ("Usage: " ARD_PROG_NAME " [ OPTIONS ] <Audio-Device-ID>\n");
printf ("Options:\n\
-h, --help display this help and exit\n\
-p, --priority <int> reservation priority (default: int32_max)\n\
@ -74,23 +84,23 @@ This tool issues a dbus request to reserve an ALSA Audio-device.\n\
If successful other users of the device (e.g. pulseaudio) will\n\
release the device.\n\
\n\
ardour-request-device by default announces itself as \"Ardour ALSA Backend\"\n\
" ARD_PROG_NAME " by default announces itself as \"" ARD_APPL_NAME "\"\n\
and uses the maximum possible priority for requesting the device.\n\
These settings can be overriden using the -n and -p options respectively.\n\
\n\
If a PID is given the tool will watch the process and if that is not running\n\
release the device and exit. Otherwise ardour-request-device runs until\n\
release the device and exit. Otherwise " ARD_PROG_NAME " runs until\n\
either stdin is closed, a SIGINT or SIGTERM is received or some other\n\
application requests the device with a higher priority.\n\
\n\
Without the -w option, ardour-request-device yields the device after 500ms to\n\
Without the -w option, " ARD_PROG_NAME " yields the device after 500ms to\n\
any higher-priority request. With the -w option this tool waits until it\n\
for SIGINT or SIGTERM - but at most 4 sec to acknowledge before releasing.\n\
\n\
The audio-device-id is a string e.g. 'Audio1'\n\
\n\
Examples:\n\
ardour-request-device Audio0\n\
" ARD_PROG_NAME " Audio0\n\
\n");
printf ("Report bugs to Robin Gareus <robin@gareus.org>\n");
@ -140,7 +150,7 @@ int main(int argc, char **argv) {
int ret, c;
int32_t priority = INT32_MAX;
char *name = strdup("Ardour ALSA Backend");
char *name = strdup(ARD_APPL_NAME);
while ((c = getopt_long (argc, argv,
"h" /* help */

2
libs/ardouralsautil/wscript
View File

@ -50,4 +50,6 @@ def build(bld):
obj.defines = [
'_POSIX_SOURCE',
'_XOPEN_SOURCE=500',
'ARD_PROG_NAME="ardour-request-device"',
'ARD_APPL_NAME="Ardour ALSA Backend"',
]