/*
* This file is part of Disobedience
- * Copyright (C) 2007 Richard Kettlewell
+ * Copyright (C) 2007-2010 Richard Kettlewell
*
- * This program is free software; you can redistribute it and/or modify
+ * This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
- * This program 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.
- *
+ * This program 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 General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file disobedience/rtp.c
* @brief RTP player support for Disobedience
*/
#include "disobedience.h"
+#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/un.h>
#include <sys/utsname.h>
+#include <sys/wait.h>
/** @brief Path to RTP player's control socket */
static char *rtp_socket;
/** @brief Path to RTP player's logfile */
static char *rtp_log;
+static char *substitute_instance_name(void) {
+ const char *p = config->rtp_instance_name;
+ struct utsname uts;
+ size_t n;
+ int ok;
+ struct dynstr z;
+
+ ok = (uname(&uts) >= 0);
+ if(!p) p = "%h-rtp";
+ dynstr_init(&z);
+ for(;;) {
+ n = strcspn(p, "%");
+ if(n) { dynstr_append_bytes(&z, p, n); p += n; }
+ if(!*p) break;
+ p++;
+ switch(*p) {
+ case '%': dynstr_append_bytes(&z, "%", 1); p++; break;
+ case 'h':
+ if(ok) { dynstr_append_string(&z, uts.nodename); p++; }
+ else { p++; if(*p) p++; }
+ case 0: break;
+ default: dynstr_append_bytes(&z, p - 1, 2); p++; break;
+ }
+ }
+ dynstr_terminate(&z);
+ return z.vec;
+}
+
/** @brief Initialize @ref rtp_socket and @ref rtp_log if necessary */
static void rtp_init(void) {
if(!rtp_socket) {
const char *home = getenv("HOME");
- char *dir, *base;
- struct utsname uts;
+ char *dir, *instance;
byte_xasprintf(&dir, "%s/.disorder/", home);
mkdir(dir, 02700);
- if(uname(&uts) < 0)
- byte_xasprintf(&base, "%s/", dir);
- else
- byte_xasprintf(&base, "%s/%s-", dir, uts.nodename);
- byte_xasprintf(&rtp_socket, "%srtp", base);
- byte_xasprintf(&rtp_log, "%srtp.log", base);
+ instance = substitute_instance_name();
+ byte_xasprintf(&rtp_socket, "%s%s", dir, instance);
+ byte_xasprintf(&rtp_log, "%s%s.log", dir, instance);
}
}
return 1;
}
+int rtp_getvol(int *l, int *r) {
+ FILE *fp;
+ int rc = -1;
+
+ fp = rtp_connect(); if(!fp) goto end;
+ fprintf(fp, "getvol\n"); fflush(fp);
+ if(fscanf(fp, "%d %d\n", l, r) != 2) goto end;
+ rc = 0;
+end:
+ if(fp) fclose(fp);
+ return rc;
+}
+
+int rtp_setvol(int *l, int *r) {
+ FILE *fp = rtp_connect(); if(!fp) return -1;
+ fprintf(fp, "setvol %d %d\n", *l, *r); fflush(fp);
+ if(fscanf(fp, "%d %d\n", l, r) != 2) { /* do nothing */ }
+ fclose(fp);
+ return 0;
+}
+
/** @brief Activate the RTP player if it is not running */
void start_rtp(void) {
pid_t pid;
/* double-fork so we don't have to wait() later */
if(!(pid = xfork())) {
if(setsid() < 0)
- fatal(errno, "error calling setsid");
- if(!(pid = xfork())) {
+ disorder_fatal(errno, "error calling setsid");
+ if(!xfork()) {
/* grandchild */
exitfn = _exit;
/* log errors and output somewhere reasonably sane. rtp_running()
* will have made sure the directory exists. */
if((fd = open(rtp_log, O_WRONLY|O_CREAT|O_TRUNC, 0600)) < 0)
- fatal(errno, "creating %s", rtp_log);
+ disorder_fatal(errno, "creating %s", rtp_log);
if(dup2(fd, 1) < 0
|| dup2(fd, 2) < 0)
- fatal(errno, "dup2");
+ disorder_fatal(errno, "dup2");
if(close(fd) < 0)
- fatal(errno, "close");
+ disorder_fatal(errno, "close");
/* We don't want to hang onto whatever stdin was */
if((fd = open("/dev/null", O_RDONLY)) < 0)
- fatal(errno, "opening /dev/null");
+ disorder_fatal(errno, "opening /dev/null");
if(dup2(fd, 0) < 0)
- fatal(errno, "dup2");
+ disorder_fatal(errno, "dup2");
if(close(fd) < 0)
- fatal(errno, "close");
+ disorder_fatal(errno, "close");
/* execute the player */
execlp("disorder-playrtp",
- "disorder-playrtp", "--socket", rtp_socket, (char *)0);
- fatal(errno, "disorder-playrtp");
+ "disorder-playrtp",
+ "--socket", rtp_socket,
+ "--api", rtp_api,
+ (char *)0);
+ disorder_fatal(errno, "disorder-playrtp");
} else {
/* child */
_exit(0);
fclose(fp);
}
+static char *rtp_config_file(void) {
+ static char *rtp_config;
+ const char *home = getenv("HOME");
+ if(!rtp_config)
+ byte_xasprintf(&rtp_config, "%s/.disorder/api", home);
+ return rtp_config;
+}
+
+const char *rtp_api;
+
+void load_rtp_config(void) {
+ char *rtp_config = rtp_config_file();
+ FILE *fp;
+ if((fp = fopen(rtp_config, "r"))) {
+ char *line;
+ if(inputline(rtp_config, fp, &line, '\n') == 0) {
+ for(int n = 0; uaudio_apis[n]; ++n)
+ if(!strcmp(uaudio_apis[n]->name, line))
+ rtp_api = line;
+ }
+ fclose(fp);
+ }
+ if(!rtp_api)
+ rtp_api = uaudio_default(uaudio_apis, UAUDIO_API_CLIENT)->name;
+}
+
+void save_rtp_config(void) {
+ if(rtp_api) {
+ char *rtp_config = rtp_config_file();
+ char *tmp;
+ byte_xasprintf(&tmp, "%s.tmp", rtp_config);
+ FILE *fp;
+ if(!(fp = fopen(tmp, "w"))){
+ fpopup_msg(GTK_MESSAGE_ERROR, "error opening %s: %s",
+ tmp, strerror(errno));
+ return;
+ }
+ if(fprintf(fp, "%s\n", rtp_api) < 0) {
+ fpopup_msg(GTK_MESSAGE_ERROR, "error writing to %s: %s",
+ tmp, strerror(errno));
+ fclose(fp);
+ return;
+ }
+ if(fclose(fp) < 0) {
+ fpopup_msg(GTK_MESSAGE_ERROR, "error closing %s: %s",
+ tmp, strerror(errno));
+ return;
+ }
+ if(rename(tmp, rtp_config) < 0) {
+ fpopup_msg(GTK_MESSAGE_ERROR, "error renaming %s: %s",
+ tmp, strerror(errno));
+ }
+ }
+}
+
+void change_rtp_api(const char *api) {
+ if(rtp_api && !strcmp(api, rtp_api))
+ return; /* no change */
+ int running = rtp_running();
+ if(running)
+ stop_rtp();
+ rtp_api = api;
+ save_rtp_config();
+ // TODO this is racy and does not work; the player doesn't shut down quickly
+ // enough.
+ if(running)
+ start_rtp();
+}
+
/*
Local Variables:
c-basic-offset:2
~mdw / disorder / blobdiff