tests/icles/: Small oss4 test that probes for available devices and retrieves their...

Original commit message from CVS:
* tests/icles/.cvsignore:
* tests/icles/Makefile.am:
* tests/icles/test-oss4.c: (opt_show_mixer_messages), (WAIT_TIME),
(show_mixer_messages), (probe_mixer_tracks), (probe_pad),
(probe_details), (probe_element), (main):
Small oss4 test that probes for available devices and retrieves
their caps and mixer tracks and all that. Also allows testing of
mixer change messages on the bus.

diff --git a/tests/icles/test-oss4.c b/tests/icles/test-oss4.c
new file mode 100644 (file)
index 0000000..6094387
--- /dev/null
+++ b/tests/icles/test-oss4.c
@@ -0,0 +1,251 @@
+/* GStreamer OSS4 audio tests
+ * Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
+ *
+ * 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>
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+#include <gst/interfaces/propertyprobe.h>
+#include <gst/interfaces/mixer.h>
+
+static gboolean opt_show_mixer_messages = FALSE;
+
+#define WAIT_TIME  60.0         /* in seconds */
+
+static void
+show_mixer_messages (GstElement * element)
+{
+  GstMessage *msg;
+  GstBus *bus;
+  GTimer *t;
+
+  t = g_timer_new ();
+
+  bus = gst_bus_new ();
+  gst_element_set_bus (element, bus);
+
+  g_print ("\nShowing mixer messages for %u seconds ...\n", (guint) WAIT_TIME);
+
+  while (g_timer_elapsed (t, NULL) < WAIT_TIME) {
+    gdouble remaining = WAIT_TIME - g_timer_elapsed (t, NULL);
+    gint64 maxwait =
+        GST_SECOND * gst_util_gdouble_to_guint64 (MAX (0.0, remaining));
+    gchar *s = NULL;
+
+    msg = gst_bus_timed_pop (bus, maxwait);
+    if (!msg)
+      break;
+
+    if (msg->structure)
+      s = gst_structure_to_string (msg->structure);
+    g_print ("%s message: %s\n", GST_MESSAGE_TYPE_NAME (msg), s);
+    gst_message_unref (msg);
+    g_free (s);
+  }
+
+  gst_element_set_bus (element, NULL);
+  gst_object_unref (bus);
+  g_timer_destroy (t);
+}
+
+static void
+probe_mixer_tracks (GstElement * element)
+{
+  const GList *tracks, *t;
+  GstMixer *mixer;
+  guint count;
+
+  if (!GST_IS_MIXER (element))
+    return;
+
+  mixer = GST_MIXER (element);
+  tracks = gst_mixer_list_tracks (mixer);
+  count = g_list_length ((GList *) tracks);
+  g_print ("  %d mixer tracks%c\n", count, (count == 0) ? '.' : ':');
+
+  for (t = tracks; t != NULL; t = t->next) {
+    GstMixerTrack *track;
+    gchar *label = NULL;
+    guint flags = 0;
+
+    track = GST_MIXER_TRACK (t->data);
+    g_object_get (track, "label", &label, "flags", &flags, NULL);
+
+    if (GST_IS_MIXER_OPTIONS (track)) {
+      GString *s;
+      GList *vals, *v;
+
+      vals = gst_mixer_options_get_values (GST_MIXER_OPTIONS (track));
+      s = g_string_new ("options: ");
+      for (v = vals; v != NULL; v = v->next) {
+        if (v->prev != NULL)
+          g_string_append (s, ", ");
+        g_string_append (s, (const gchar *) v->data);
+      }
+
+      g_print ("    [%s] flags=0x%08x, %s\n", label, flags, s->str);
+      g_string_free (s, TRUE);
+    } else if (track->num_channels == 0) {
+      g_print ("    [%s] flags=0x%08x, switch\n", label, flags);
+    } else if (track->num_channels > 0) {
+      g_print ("    [%s] flags=0x%08x, slider (%d channels)\n", label, flags,
+          track->num_channels);
+    } else {
+      g_print ("    [%s] flags=0x%08x, UNKNOWN TYPE\n", label, flags);
+    }
+
+    g_free (label);
+  }
+
+  /* for testing the mixer watch thread / auto-notifications */
+  if (strstr (GST_ELEMENT_NAME (element), "mixer") != NULL &&
+      opt_show_mixer_messages) {
+    show_mixer_messages (element);
+  }
+}
+
+static void
+probe_pad (GstElement * element, const gchar * pad_name)
+{
+  GstCaps *caps = NULL;
+  GstPad *pad;
+  guint i;
+
+  pad = gst_element_get_static_pad (element, pad_name);
+  if (pad == NULL)
+    return;
+
+  caps = gst_pad_get_caps (pad);
+  g_return_if_fail (caps != NULL);
+
+  for (i = 0; i < gst_caps_get_size (caps); ++i) {
+    gchar *s;
+
+    s = gst_structure_to_string (gst_caps_get_structure (caps, i));
+    g_print ("  %4s[%d]: %s\n", GST_PAD_NAME (pad), i, s);
+    g_free (s);
+  }
+  gst_caps_unref (caps);
+  gst_object_unref (pad);
+}
+
+static void
+probe_details (GstElement * element)
+{
+  GstStateChangeReturn ret;
+
+  ret = gst_element_set_state (element, GST_STATE_READY);
+  if (ret == GST_STATE_CHANGE_FAILURE) {
+    g_print ("Could not set element %s to READY.", GST_ELEMENT_NAME (element));
+    return;
+  }
+
+  probe_pad (element, "sink");
+  probe_pad (element, "src");
+
+  probe_mixer_tracks (element);
+
+  gst_element_set_state (element, GST_STATE_NULL);
+}
+
+static void
+probe_element (const gchar * name)
+{
+  GstPropertyProbe *probe;
+  GValueArray *arr;
+  GstElement *element;
+  gchar *devname = NULL;
+  gint i;
+
+  element = gst_element_factory_make (name, name);
+
+  /* make sure we don't deadlock on GST_ELEMENT_ERROR or do other silly things
+   * if we try to query the "device-name" property when the device isn't open */
+  g_object_set (element, "device", "/dev/does/not/exist", NULL);
+  g_object_get (element, "device-name", &devname, NULL);
+  g_assert (devname == NULL);
+
+  /* and now for real */
+
+  probe = GST_PROPERTY_PROBE (element);
+  arr = gst_property_probe_probe_and_get_values_name (probe, "device");
+
+  for (i = 0; arr != NULL && i < arr->n_values; ++i) {
+    GValue *val;
+    gchar *dev_name = NULL;
+
+    g_print ("\n");
+    /* we assume the element supports getting the device-name in NULL state */
+    val = g_value_array_get_nth (arr, i);
+    g_object_set (element, "device", g_value_get_string (val), NULL);
+    g_object_get (element, "device-name", &dev_name, NULL);
+    g_print ("%-10s device[%d] = %s (%s)\n", GST_OBJECT_NAME (element),
+        i, g_value_get_string (val), dev_name);
+    if (strstr (dev_name, "/usb")) {
+      g_print ("\n\nWARNING: going to probe USB audio device. OSS4 USB support"
+          " is still\npretty shaky, so bad things may happen (e.g. kernel "
+          "lockup).\nPress Control-C NOW if you don't want to continue. "
+          "(waiting 5secs)\n\n");
+      g_usleep (5 * G_USEC_PER_SEC);
+    }
+    g_free (dev_name);
+
+    probe_details (element);
+  }
+
+  if (arr) {
+    g_value_array_free (arr);
+  }
+
+  gst_object_unref (element);
+}
+
+int
+main (int argc, char **argv)
+{
+  GOptionEntry options[] = {
+    {"show-mixer-messages", 'm', 0, G_OPTION_ARG_NONE, &opt_show_mixer_messages,
+        "For mixer elements, wait 60 seconds and show any mixer messages "
+          "(for debugging auto-notifications)", NULL},
+    {NULL,}
+  };
+  GOptionContext *ctx;
+  GError *err = NULL;
+
+  if (!g_thread_supported ())
+    g_thread_init (NULL);
+
+  ctx = g_option_context_new ("");
+  g_option_context_add_main_entries (ctx, options, NULL);
+  g_option_context_add_group (ctx, gst_init_get_option_group ());
+  if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
+    g_print ("Error initializing: %s\n", err->message);
+    exit (1);
+  }
+  g_option_context_free (ctx);
+
+  probe_element ("oss4sink");
+  probe_element ("oss4src");
+  probe_element ("oss4mixer");
+
+  return 0;
+}