Few improvements to move to good.

Original commit message from CVS:
Few improvements to move to good.

1 files changed, 241 insertions, 0 deletions

diff --git a/tests/icles/v4l2src-test.c b/tests/icles/v4l2src-test.c
new file mode 100644
index 00000000..b8f85e15
--- /dev/null
+++ b/tests/icles/v4l2src-test.c
@@ -0,0 +1,241 @@
+
+#include <gst/gst.h>
+#include <gst/interfaces/tuner.h>
+#include <gst/interfaces/colorbalance.h>
+
+GstElement *pipeline, *source, *sink;
+GMainLoop *loop;
+volatile int exit_read = 0;
+
+void
+print_options ()
+{
+  printf
+      ("\nLaunch \"./v4l2src-test.c devname\" to choose the device (default: /dev/video0)\n");
+  printf ("\nf - to change the fequency\n");
+  printf ("i - to change the input\n");
+  printf ("c - list color balance\n");
+  printf ("e - to exit\n");
+}
+
+void
+run_options (char opt)
+{
+  switch (opt) {
+    case 'f':
+    {
+      GstTuner *tuner = GST_TUNER (source);
+      GstTunerChannel *channel = gst_tuner_get_channel (tuner);
+      guint freq;
+
+      printf ("type the new frequency (current = %lu) (-1 to cancel): ",
+          gst_tuner_get_frequency (tuner, channel));
+      scanf ("%u", &freq);
+      if (freq != -1)
+        gst_tuner_set_frequency (tuner, channel, freq);
+    }
+      break;
+    case 'i':
+    {
+      GstTuner *tuner = GST_TUNER (source);
+      const GList *item, *list;
+      const GstTunerChannel *current_channel;
+      GstTunerChannel *channel = NULL;
+      gint index, next_channel;
+
+      list = gst_tuner_list_channels (tuner);
+      current_channel = gst_tuner_get_channel (tuner);
+
+      printf ("\nlist of inputs:\n");
+      for (item = list, index = 0; item != NULL; item = item->next, ++index) {
+        channel = item->data;
+        if (current_channel == channel) {
+          printf (" * %u - %s\n", index, channel->label);
+        } else {
+          printf ("   %u - %s\n", index, channel->label);
+        }
+      }
+      printf ("\ntype the number of input you want (-1 to cancel): ");
+      scanf ("%d", &next_channel);
+      if (next_channel < 0 || index <= next_channel) {
+        break;
+      }
+      for (item = list, index = 0; item != NULL && index <= next_channel;
+          item = item->next, ++index) {
+        channel = item->data;
+      }
+      if (channel)
+        gst_tuner_set_channel (tuner, channel);
+    }
+      break;
+    case 'e':
+      gst_element_set_state (pipeline, GST_STATE_NULL);
+      g_main_loop_quit (loop);
+      printf ("Bye\n");
+      g_thread_exit (0);
+      break;
+    case 'c':
+    {
+      GstColorBalance *balance = GST_COLOR_BALANCE (source);
+      const GList *controls = gst_color_balance_list_channels (balance);
+      GstColorBalanceChannel *channel;
+      const GList *item;
+      gint index, new_value;
+
+      if (controls) {
+        printf ("\nlist of controls:\n");
+        for (item = controls, index = 0; item != NULL;
+            item = item->next, ++index) {
+          channel = item->data;
+          printf ("   %u - %s (%d - %d) = %d\n", index, channel->label,
+              channel->min_value, channel->max_value,
+              gst_color_balance_get_value (balance, channel));
+        }
+        printf ("\ntype the number of color control you want (-1 to cancel): ");
+        scanf ("%d", &new_value);
+        if (new_value == -1)
+          break;
+        for (item = controls, index = 0; item != NULL && index <= new_value;
+            item = item->next, ++index) {
+          channel = item->data;
+        }
+        printf ("   %u - %s (%d - %d) = %d, type the new value: ", index,
+            channel->label, channel->min_value, channel->max_value,
+            gst_color_balance_get_value (balance, channel));
+        scanf ("%d", &new_value);
+        if (new_value == -1)
+          break;
+        gst_color_balance_set_value (balance, channel, new_value);
+      }
+    }
+      break;
+    default:
+      if (opt != 10)
+        printf ("error: invalid option %c", opt);
+      break;
+  }
+
+}
+
+gpointer
+read_user (gpointer data)
+{
+
+  char opt;
+
+  while (!exit_read) {
+
+    print_options ();
+
+    opt = getchar ();
+    if (exit_read) {
+      break;
+    }
+
+    run_options (opt);
+
+  }
+
+  return NULL;
+
+}
+
+static gboolean
+my_bus_callback (GstBus * bus, GstMessage * message, gpointer data)
+{
+
+  switch (GST_MESSAGE_TYPE (message)) {
+    case GST_MESSAGE_ERROR:{
+      GError *err;
+      gchar *debug;
+
+      gst_message_parse_error (message, &err, &debug);
+      g_print ("Error: %s - element %s\n", err->message,
+          gst_element_get_name (message->src));
+      g_error_free (err);
+      g_free (debug);
+
+      printf ("presse any key to exit\n");
+      exit_read = 1;
+      g_main_loop_quit (loop);
+      break;
+    case GST_MESSAGE_EOS:
+      /* end-of-stream */
+      printf ("presse any key to exit\n");
+      exit_read = 1;
+      g_main_loop_quit (loop);
+      break;
+    default:
+      break;
+    }
+  }
+  return TRUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+
+  GThread *input_thread;
+
+  /* init */
+  gst_init (&argc, &argv);
+
+  /* create elements */
+  if (!(pipeline = gst_pipeline_new ("my_pipeline"))) {
+    fprintf (stderr, "error: gst_pipeline_new return NULL");
+    return -1;
+  }
+
+  if (!(source = gst_element_factory_make ("v4l2src", NULL))) {
+    fprintf (stderr,
+        "error: gst_element_factory_make (\"v4l2src\", NULL) return NULL");
+    return -1;
+  }
+
+  if (!(sink = gst_element_factory_make ("xvimagesink", NULL))) {
+    fprintf (stderr,
+        "error: gst_element_factory_make (\"xvimagesink\", NULL) return NULL");
+    return -1;
+  }
+
+  if (argv < 2) {
+    g_object_set (source, "device", "/dev/video0", NULL);
+  } else {
+    g_object_set (source, "device", argv[1], NULL);
+  }
+
+  /* you would normally check that the elements were created properly */
+  gst_bus_add_watch (gst_pipeline_get_bus (GST_PIPELINE (pipeline)),
+      my_bus_callback, NULL);
+
+  /* put together a pipeline */
+  gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);
+  gst_element_link_pads (source, "src", sink, "sink");
+
+  /* start the pipeline */
+  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
+  loop = g_main_loop_new (NULL, FALSE);
+
+  if (!(input_thread = g_thread_create (read_user, source, TRUE, NULL))) {
+    fprintf (stderr, "error: g_thread_create return NULL");
+    return -1;
+  }
+
+  if (argv < 2)
+    printf
+        ("\nOpening /dev/video0. Launch ./v4l2src-test.c devname to try another one\n");
+
+
+  g_main_loop_run (loop);
+  g_thread_join (input_thread);
+
+  gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
+
+  gst_object_unref (pipeline);
+
+  gst_deinit ();
+
+  return 0;
+
+}