Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 343 insertions, 0 deletions

diff --git a/src/utils/pasuspender.c b/src/utils/pasuspender.c
new file mode 100644
index 0000000..1f0c987
--- /dev/null
+++ b/src/utils/pasuspender.c
@@ -0,0 +1,343 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio 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 Lesser General Public License
+  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <locale.h>
+
+#ifdef __linux__
+#include <sys/prctl.h>
+#endif
+
+#include <pulse/pulseaudio.h>
+
+#include <pulsecore/i18n.h>
+#include <pulsecore/macro.h>
+
+static pa_context *context = NULL;
+static pa_mainloop_api *mainloop_api = NULL;
+static char **child_argv = NULL;
+static int child_argc = 0;
+static pid_t child_pid = (pid_t) -1;
+static int child_ret = 0;
+static int dead = 1;
+static int fork_failed = 0;
+
+static void quit(int ret) {
+    pa_assert(mainloop_api);
+    mainloop_api->quit(mainloop_api, ret);
+}
+
+static void context_drain_complete(pa_context *c, void *userdata) {
+    pa_context_disconnect(c);
+}
+
+static void drain(void) {
+    pa_operation *o;
+
+    if (context) {
+        if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
+            pa_context_disconnect(context);
+        else
+            pa_operation_unref(o);
+    } else
+        quit(0);
+}
+
+static int start_child(void) {
+
+    if ((child_pid = fork()) < 0) {
+        fprintf(stderr, _("fork(): %s\n"), strerror(errno));
+        fork_failed = 1;
+
+        return -1;
+
+    } else if (child_pid == 0) {
+        /* Child */
+
+#ifdef __linux__
+        prctl(PR_SET_PDEATHSIG, SIGTERM, 0, 0, 0);
+#endif
+
+        if (execvp(child_argv[0], child_argv) < 0)
+            fprintf(stderr, _("execvp(): %s\n"), strerror(errno));
+
+        _exit(1);
+
+    } else {
+
+        /* parent */
+        dead = 0;
+    }
+
+    return 0;
+}
+
+static void resume_complete(pa_context *c, int success, void *userdata) {
+    static int n = 0;
+
+    n++;
+
+    if (!success) {
+        fprintf(stderr, _("Failure to resume: %s\n"), pa_strerror(pa_context_errno(c)));
+        quit(1);
+        return;
+    }
+
+    if (n >= 2)
+        drain(); /* drain and quit */
+}
+
+static void resume(void) {
+    static int n = 0;
+
+    n++;
+
+    if (n > 1)
+        return;
+
+    if (context) {
+        if (pa_context_is_local(context)) {
+            pa_operation_unref(pa_context_suspend_sink_by_index(context, PA_INVALID_INDEX, 0, resume_complete, NULL));
+            pa_operation_unref(pa_context_suspend_source_by_index(context, PA_INVALID_INDEX, 0, resume_complete, NULL));
+        } else
+            drain();
+    } else {
+        quit(0);
+    }
+}
+
+static void suspend_complete(pa_context *c, int success, void *userdata) {
+    static int n = 0;
+
+    n++;
+
+    if (!success) {
+        fprintf(stderr, _("Failure to suspend: %s\n"), pa_strerror(pa_context_errno(c)));
+        quit(1);
+        return;
+    }
+
+    if (n >= 2) {
+        if (start_child() < 0)
+            resume();
+    }
+}
+
+static void context_state_callback(pa_context *c, void *userdata) {
+    pa_assert(c);
+
+    switch (pa_context_get_state(c)) {
+        case PA_CONTEXT_CONNECTING:
+        case PA_CONTEXT_AUTHORIZING:
+        case PA_CONTEXT_SETTING_NAME:
+            break;
+
+        case PA_CONTEXT_READY:
+            if (pa_context_is_local(c)) {
+                pa_operation_unref(pa_context_suspend_sink_by_index(c, PA_INVALID_INDEX, 1, suspend_complete, NULL));
+                pa_operation_unref(pa_context_suspend_source_by_index(c, PA_INVALID_INDEX, 1, suspend_complete, NULL));
+            } else {
+                fprintf(stderr, _("WARNING: Sound server is not local, not suspending.\n"));
+                if (start_child() < 0)
+                    drain();
+            }
+
+            break;
+
+        case PA_CONTEXT_TERMINATED:
+            quit(0);
+            break;
+
+        case PA_CONTEXT_FAILED:
+        default:
+            fprintf(stderr, _("Connection failure: %s\n"), pa_strerror(pa_context_errno(c)));
+
+            pa_context_unref(context);
+            context = NULL;
+
+            if (child_pid == (pid_t) -1) {
+                /* not started yet, then we do it now */
+                if (start_child() < 0)
+                    quit(1);
+            } else if (dead)
+                /* already started, and dead, so let's quit */
+                quit(1);
+
+            break;
+    }
+}
+
+static void sigint_callback(pa_mainloop_api *m, pa_signal_event *e, int sig, void *userdata) {
+    fprintf(stderr, _("Got SIGINT, exiting.\n"));
+    resume();
+}
+
+static void sigchld_callback(pa_mainloop_api *m, pa_signal_event *e, int sig, void *userdata) {
+    int status = 0;
+    pid_t p;
+
+    p = waitpid(-1, &status, WNOHANG);
+
+    if (p != child_pid)
+        return;
+
+    dead = 1;
+
+    if (WIFEXITED(status))
+        child_ret = WEXITSTATUS(status);
+    else if (WIFSIGNALED(status)) {
+        fprintf(stderr, _("WARNING: Child process terminated by signal %u\n"), WTERMSIG(status));
+        child_ret = 1;
+    }
+
+    resume();
+}
+
+static void help(const char *argv0) {
+
+    printf(_("%s [options] -- PROGRAM [ARGUMENTS ...]\n\n"
+           "Temporarily suspend PulseAudio while PROGRAM runs.\n\n"    
+           "  -h, --help                            Show this help\n"
+           "      --version                         Show version\n"
+           "  -s, --server=SERVER                   The name of the server to connect to\n\n"),
+           argv0);
+}
+
+enum {
+    ARG_VERSION = 256
+};
+
+int main(int argc, char *argv[]) {
+    pa_mainloop* m = NULL;
+    int c, ret = 1;
+    char *server = NULL, *bn;
+
+    static const struct option long_options[] = {
+        {"server",      1, NULL, 's'},
+        {"version",     0, NULL, ARG_VERSION},
+        {"help",        0, NULL, 'h'},
+        {NULL,          0, NULL, 0}
+    };
+
+    setlocale(LC_ALL, "");
+#ifdef ENABLE_NLS
+    bindtextdomain(GETTEXT_PACKAGE, PULSE_LOCALEDIR);
+#endif
+
+    bn = pa_path_get_filename(argv[0]);
+
+    while ((c = getopt_long(argc, argv, "s:h", long_options, NULL)) != -1) {
+        switch (c) {
+            case 'h' :
+                help(bn);
+                ret = 0;
+                goto quit;
+
+            case ARG_VERSION:
+                printf(_("pasuspender %s\n"
+                         "Compiled with libpulse %s\n"
+                         "Linked with libpulse %s\n"),
+                       PACKAGE_VERSION,
+                       pa_get_headers_version(),
+                       pa_get_library_version());
+                ret = 0;
+                goto quit;
+
+            case 's':
+                pa_xfree(server);
+                server = pa_xstrdup(optarg);
+                break;
+
+            default:
+                goto quit;
+        }
+    }
+
+    child_argv = argv + optind;
+    child_argc = argc - optind;
+
+    if (child_argc <= 0) {
+        help(bn);
+        ret = 0;
+        goto quit;
+    }
+
+    if (!(m = pa_mainloop_new())) {
+        fprintf(stderr, _("pa_mainloop_new() failed.\n"));
+        goto quit;
+    }
+
+    pa_assert_se(mainloop_api = pa_mainloop_get_api(m));
+    pa_assert_se(pa_signal_init(mainloop_api) == 0);
+    pa_signal_new(SIGINT, sigint_callback, NULL);
+    pa_signal_new(SIGCHLD, sigchld_callback, NULL);
+#ifdef SIGPIPE
+    signal(SIGPIPE, SIG_IGN);
+#endif
+
+    if (!(context = pa_context_new(mainloop_api, bn))) {
+        fprintf(stderr, _("pa_context_new() failed.\n"));
+        goto quit;
+    }
+
+    pa_context_set_state_callback(context, context_state_callback, NULL);
+
+    if (pa_context_connect(context, server, PA_CONTEXT_NOAUTOSPAWN, NULL) < 0) {
+        fprintf(stderr, "pa_context_connect() failed: %s\n", pa_strerror(pa_context_errno(context)));
+        goto quit;
+    }
+
+    if (pa_mainloop_run(m, &ret) < 0) {
+        fprintf(stderr, _("pa_mainloop_run() failed.\n"));
+        goto quit;
+    }
+
+    if (ret == 0 && fork_failed)
+        ret = 1;
+
+quit:
+    if (context)
+        pa_context_unref(context);
+
+    if (m) {
+        pa_signal_done();
+        pa_mainloop_free(m);
+    }
+
+    pa_xfree(server);
+
+    if (!dead)
+        kill(child_pid, SIGTERM);
+
+    return ret == 0 ? child_ret : ret;
+}