X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=gst-plugins-base-subtitles0.10%2Fsys%2Fv4l%2Fgstv4lcolorbalance.c;fp=gst-plugins-base-subtitles0.10%2Fsys%2Fv4l%2Fgstv4lcolorbalance.c;h=35745bb57a7d6e92e3707e9b334c49cd15108065;hb=57ba96e291a055f69dbfd4ae9f1ae2390e36986e;hp=0000000000000000000000000000000000000000;hpb=be2c98fb83895d10ac44af7b9a9c3e00ca54bf49;p=mafwsubrenderer

diff --git a/gst-plugins-base-subtitles0.10/sys/v4l/gstv4lcolorbalance.c b/gst-plugins-base-subtitles0.10/sys/v4l/gstv4lcolorbalance.c
new file mode 100644
index 0000000..35745bb
--- /dev/null
+++ b/gst-plugins-base-subtitles0.10/sys/v4l/gstv4lcolorbalance.c
@@ -0,0 +1,150 @@
+/* GStreamer
+ *
+ * gstv4lcolorbalance.c: color balance interface implementation for V4L
+ *
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.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 <gst/gst.h>
+#include "gstv4lcolorbalance.h"
+#include "gstv4lelement.h"
+
+static void
+gst_v4l_color_balance_channel_class_init (GstV4lColorBalanceChannelClass *
+    klass);
+static void gst_v4l_color_balance_channel_init (GstV4lColorBalanceChannel *
+    channel);
+
+static const GList *gst_v4l_color_balance_list_channels (GstColorBalance *
+    balance);
+static void gst_v4l_color_balance_set_value (GstColorBalance * balance,
+    GstColorBalanceChannel * channel, gint value);
+static gint gst_v4l_color_balance_get_value (GstColorBalance * balance,
+    GstColorBalanceChannel * channel);
+
+static GstColorBalanceChannelClass *parent_class = NULL;
+
+GType
+gst_v4l_color_balance_channel_get_type (void)
+{
+  static GType gst_v4l_color_balance_channel_type = 0;
+
+  if (!gst_v4l_color_balance_channel_type) {
+    static const GTypeInfo v4l_tuner_channel_info = {
+      sizeof (GstV4lColorBalanceChannelClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_v4l_color_balance_channel_class_init,
+      NULL,
+      NULL,
+      sizeof (GstV4lColorBalanceChannel),
+      0,
+      (GInstanceInitFunc) gst_v4l_color_balance_channel_init,
+      NULL
+    };
+
+    gst_v4l_color_balance_channel_type =
+        g_type_register_static (GST_TYPE_COLOR_BALANCE_CHANNEL,
+        "GstV4lColorBalanceChannel", &v4l_tuner_channel_info, 0);
+  }
+
+  return gst_v4l_color_balance_channel_type;
+}
+
+static void
+gst_v4l_color_balance_channel_class_init (GstV4lColorBalanceChannelClass *
+    klass)
+{
+  parent_class = g_type_class_peek_parent (klass);
+}
+
+static void
+gst_v4l_color_balance_channel_init (GstV4lColorBalanceChannel * channel)
+{
+  channel->index = 0;
+}
+
+void
+gst_v4l_color_balance_interface_init (GstColorBalanceClass * klass)
+{
+  GST_COLOR_BALANCE_TYPE (klass) = GST_COLOR_BALANCE_HARDWARE;
+
+  /* default virtual functions */
+  klass->list_channels = gst_v4l_color_balance_list_channels;
+  klass->set_value = gst_v4l_color_balance_set_value;
+  klass->get_value = gst_v4l_color_balance_get_value;
+}
+
+static G_GNUC_UNUSED gboolean
+gst_v4l_color_balance_contains_channel (GstV4lElement * v4lelement,
+    GstV4lColorBalanceChannel * v4lchannel)
+{
+  const GList *item;
+
+  for (item = v4lelement->colors; item != NULL; item = item->next)
+    if (item->data == v4lchannel)
+      return TRUE;
+
+  return FALSE;
+}
+
+static const GList *
+gst_v4l_color_balance_list_channels (GstColorBalance * balance)
+{
+  return GST_V4LELEMENT (balance)->colors;
+}
+
+static void
+gst_v4l_color_balance_set_value (GstColorBalance * balance,
+    GstColorBalanceChannel * channel, gint value)
+{
+  GstV4lElement *v4lelement = GST_V4LELEMENT (balance);
+  GstV4lColorBalanceChannel *v4lchannel =
+      GST_V4L_COLOR_BALANCE_CHANNEL (channel);
+
+  /* assert that we're opened and that we're using a known item */
+  g_return_if_fail (GST_V4L_IS_OPEN (v4lelement));
+  g_return_if_fail (gst_v4l_color_balance_contains_channel (v4lelement,
+          v4lchannel));
+
+  gst_v4l_set_picture (v4lelement, v4lchannel->index, value);
+}
+
+static gint
+gst_v4l_color_balance_get_value (GstColorBalance * balance,
+    GstColorBalanceChannel * channel)
+{
+  GstV4lElement *v4lelement = GST_V4LELEMENT (balance);
+  GstV4lColorBalanceChannel *v4lchannel =
+      GST_V4L_COLOR_BALANCE_CHANNEL (channel);
+  gint value;
+
+  /* assert that we're opened and that we're using a known item */
+  g_return_val_if_fail (GST_V4L_IS_OPEN (v4lelement), 0);
+  g_return_val_if_fail (gst_v4l_color_balance_contains_channel (v4lelement,
+          v4lchannel), 0);
+
+  if (!gst_v4l_get_picture (v4lelement, v4lchannel->index, &value))
+    return 0;
+
+  return value;
+}