1 files changed, 47 insertions, 1 deletions

diff --git a/sys/oss/oss_probe.c b/sys/oss/oss_probe.c
index 5b0d1284..1d54a607 100644
--- a/sys/oss/oss_probe.c
+++ b/sys/oss/oss_probe.c
@@ -1,3 +1,24 @@
+/* GStreamer
+ * Copyright (C) 2004 David Schleef
+ *               2004 Toni Willberg <toniw@iki.fi>
+ *
+ * oss_probe.c:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -52,9 +73,12 @@ int
 main (int argc, char *argv[])
 {
   int fd;
-  int i;
+  int i, ret;
   Probe *probe;
 
+  gboolean mono_supported = FALSE;
+  gboolean stereo_supported = FALSE;
+
   fd = open ("/dev/dsp", O_RDWR);
   if (fd < 0) {
     perror ("/dev/dsp");
@@ -64,7 +88,29 @@ main (int argc, char *argv[])
   probe = g_new0 (Probe, 1);
   probe->fd = fd;
   probe->format = AFMT_S16_LE;
+
+  /* check if the device supports mono, stereo or both */
+  probe->n_channels = 1;
+  ret = ioctl (fd, SNDCTL_DSP_CHANNELS, &probe->n_channels);
+  if (probe->n_channels == 1)
+    mono_supported = TRUE;
+
   probe->n_channels = 2;
+  ret = ioctl (fd, SNDCTL_DSP_CHANNELS, &probe->n_channels);
+  if (probe->n_channels == 2)
+    stereo_supported = TRUE;
+
+  if (mono_supported && stereo_supported) {
+    g_print ("The device supports mono and stereo.\n");
+  } else if (mono_supported) {
+    g_print ("The device supports only mono.\n");
+  } else if (stereo_supported) {
+    g_print ("The device supports only stereo.\n");
+  } else {
+    /* exit with error */
+    g_error
+        ("The device doesn't support mono or stereo. This should not happen.\n");
+  }
 
   probe_check (probe);
   g_array_sort (probe->rates, int_compare);