mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-05 13:29:57 -05:00
merge 'lennart' branch back into trunk.
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1971 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering
parent
6687dd0131
commit
a67c21f093
294 changed files with 79057 additions and 11614 deletions
316
src/utils/pasuspender.c
Normal file
316
src/utils/pasuspender.c
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/* $Id$ */
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <getopt.h>
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#include <sndfile.h>
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#ifdef __linux__
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#include <sys/prctl.h>
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#endif
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#include <pulse/pulseaudio.h>
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#include <pulsecore/macro.h>
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#if PA_API_VERSION < 10
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#error Invalid PulseAudio API version
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#endif
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#define BUFSIZE 1024
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static pa_context *context = NULL;
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static pa_mainloop_api *mainloop_api = NULL;
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static char **child_argv = NULL;
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static int child_argc = 0;
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static pid_t child_pid = (pid_t) -1;
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static int child_ret = 0;
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static int dead = 1;
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static void quit(int ret) {
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pa_assert(mainloop_api);
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mainloop_api->quit(mainloop_api, ret);
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}
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static void context_drain_complete(pa_context *c, void *userdata) {
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pa_context_disconnect(c);
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}
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static void drain(void) {
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pa_operation *o;
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if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
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pa_context_disconnect(context);
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else
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pa_operation_unref(o);
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}
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static void start_child(void) {
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if ((child_pid = fork()) < 0) {
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fprintf(stderr, "fork(): %s\n", strerror(errno));
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quit(1);
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} else if (child_pid == 0) {
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/* Child */
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#ifdef __linux__
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prctl(PR_SET_PDEATHSIG, SIGTERM, 0, 0, 0);
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#endif
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if (execvp(child_argv[0], child_argv) < 0)
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fprintf(stderr, "execvp(): %s\n", strerror(errno));
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_exit(1);
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} else {
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/* parent */
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dead = 0;
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}
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}
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static void suspend_complete(pa_context *c, int success, void *userdata) {
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static int n = 0;
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n++;
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if (!success) {
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fprintf(stderr, "Failure to suspend: %s\n", pa_strerror(pa_context_errno(c)));
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quit(1);
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return;
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}
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if (n >= 2)
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start_child();
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}
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static void resume_complete(pa_context *c, int success, void *userdata) {
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static int n = 0;
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n++;
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if (!success) {
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fprintf(stderr, "Failure to resume: %s\n", pa_strerror(pa_context_errno(c)));
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quit(1);
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return;
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}
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if (n >= 2)
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drain(); /* drain and quit */
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}
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static void context_state_callback(pa_context *c, void *userdata) {
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pa_assert(c);
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switch (pa_context_get_state(c)) {
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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break;
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case PA_CONTEXT_READY:
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if (pa_context_is_local(c)) {
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pa_operation_unref(pa_context_suspend_sink_by_index(c, PA_INVALID_INDEX, 1, suspend_complete, NULL));
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pa_operation_unref(pa_context_suspend_source_by_index(c, PA_INVALID_INDEX, 1, suspend_complete, NULL));
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} else
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start_child();
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break;
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case PA_CONTEXT_TERMINATED:
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quit(0);
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break;
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case PA_CONTEXT_FAILED:
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default:
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fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
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pa_context_unref(context);
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context = NULL;
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if (child_pid == (pid_t) -1)
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/* not started yet, then we do it now */
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start_child();
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else if (dead)
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/* already started, and dead, so let's quit */
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quit(1);
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break;
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}
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}
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static void sigint_callback(pa_mainloop_api *m, pa_signal_event *e, int sig, void *userdata) {
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fprintf(stderr, "Got SIGINT, exiting.\n");
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quit(0);
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}
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static void sigchld_callback(pa_mainloop_api *m, pa_signal_event *e, int sig, void *userdata) {
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int status = 0;
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pid_t p;
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p = waitpid(-1, &status, WNOHANG);
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if (p != child_pid)
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return;
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dead = 1;
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if (WIFEXITED(status))
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child_ret = WEXITSTATUS(status);
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else if (WIFSIGNALED(status)) {
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fprintf(stderr, "WARNING: Child process terminated by signal %u\n", WTERMSIG(status));
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child_ret = 1;
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}
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if (context) {
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if (pa_context_is_local(context)) {
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/* A context is around, so let's resume */
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pa_operation_unref(pa_context_suspend_sink_by_index(context, PA_INVALID_INDEX, 0, resume_complete, NULL));
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pa_operation_unref(pa_context_suspend_source_by_index(context, PA_INVALID_INDEX, 0, resume_complete, NULL));
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} else
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drain();
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} else
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/* Hmm, no context here, so let's terminate right away */
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quit(0);
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}
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static void help(const char *argv0) {
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printf("%s [options] ... \n\n"
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" -h, --help Show this help\n"
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" --version Show version\n"
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" -s, --server=SERVER The name of the server to connect to\n\n",
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argv0);
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}
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enum {
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ARG_VERSION = 256
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};
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int main(int argc, char *argv[]) {
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pa_mainloop* m = NULL;
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int c, ret = 1;
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char *server = NULL, *bn;
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static const struct option long_options[] = {
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{"server", 1, NULL, 's'},
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{"version", 0, NULL, ARG_VERSION},
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{"help", 0, NULL, 'h'},
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{NULL, 0, NULL, 0}
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};
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if (!(bn = strrchr(argv[0], '/')))
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bn = argv[0];
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else
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bn++;
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while ((c = getopt_long(argc, argv, "s:h", long_options, NULL)) != -1) {
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switch (c) {
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case 'h' :
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help(bn);
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ret = 0;
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goto quit;
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case ARG_VERSION:
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printf("pasuspender "PACKAGE_VERSION"\nCompiled with libpulse %s\nLinked with libpulse %s\n", pa_get_headers_version(), pa_get_library_version());
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ret = 0;
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goto quit;
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case 's':
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pa_xfree(server);
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server = pa_xstrdup(optarg);
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break;
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default:
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goto quit;
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}
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}
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child_argv = argv + optind;
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child_argc = argc - optind;
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if (child_argc <= 0) {
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help(bn);
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ret = 0;
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goto quit;
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}
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if (!(m = pa_mainloop_new())) {
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fprintf(stderr, "pa_mainloop_new() failed.\n");
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goto quit;
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}
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pa_assert_se(mainloop_api = pa_mainloop_get_api(m));
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pa_assert_se(pa_signal_init(mainloop_api) == 0);
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pa_signal_new(SIGINT, sigint_callback, NULL);
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pa_signal_new(SIGCHLD, sigchld_callback, NULL);
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#ifdef SIGPIPE
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signal(SIGPIPE, SIG_IGN);
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#endif
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if (!(context = pa_context_new(mainloop_api, bn))) {
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fprintf(stderr, "pa_context_new() failed.\n");
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goto quit;
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}
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pa_context_set_state_callback(context, context_state_callback, NULL);
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pa_context_connect(context, server, PA_CONTEXT_NOAUTOSPAWN, NULL);
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if (pa_mainloop_run(m, &ret) < 0) {
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fprintf(stderr, "pa_mainloop_run() failed.\n");
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goto quit;
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}
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quit:
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if (context)
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pa_context_unref(context);
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if (m) {
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pa_signal_done();
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pa_mainloop_free(m);
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}
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pa_xfree(server);
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if (!dead)
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kill(child_pid, SIGTERM);
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return ret == 0 ? child_ret : ret;
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}
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