camerasrc/src/gstcamerasrccolorbalance.c

   1 /*
   2  * camerasrc
   3  *
   4  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Jeongmo Yang <jm80.yang@samsung.com>
   7  *
   8  * This library is free software; you can redistribute it and/or modify it under
   9  * the terms of the GNU Lesser General Public License as published by the
  10  * Free Software Foundation; either version 2.1 of the License, or (at your option)
  11  * any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful, but WITHOUT ANY
  14  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
  16  * License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this library; if not, write to the Free Software Foundation, Inc., 51
  20  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  *
  22  */
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include <gst/gst.h>
  29 #include "gstcamerasrccolorbalance.h"
  30
  31 GST_BOILERPLATE( GstCameraSrcColorBalanceChannel,
  32                  gst_camerasrc_color_balance_channel,
  33                  GstColorBalanceChannel,
  34                  GST_TYPE_COLOR_BALANCE_CHANNEL );
  35
  36 #ifndef GST_CAT_DEFAULT
  37 GST_DEBUG_CATEGORY_EXTERN(camerasrc_debug);
  38 #define GST_CAT_DEFAULT camerasrc_debug
  39 #endif /* GST_CAT_DEFAULT */
  40
  41 static void
  42 gst_camerasrc_color_balance_channel_base_init( gpointer g_class )
  43 {
  44 }
  45
  46 static void
  47 gst_camerasrc_color_balance_channel_class_init( GstCameraSrcColorBalanceChannelClass* klass )
  48 {
  49 }
  50
  51 static void
  52 gst_camerasrc_color_balance_channel_init( GstCameraSrcColorBalanceChannel* camerasrc_color_channel, GstCameraSrcColorBalanceChannelClass* klass )
  53 {
  54         camerasrc_color_channel->id = (guint32) - 1;
  55 }
  56
  57 static G_GNUC_UNUSED gboolean
  58 gst_camerasrc_color_balance_contains_channel( GstCameraSrc* camerasrc, GstCameraSrcColorBalanceChannel* camerasrc_color_channel )
  59 {
  60         const GList *item;
  61
  62         for( item = camerasrc->colors ; item != NULL ; item = item->next )
  63         {
  64                 if (item->data == camerasrc_color_channel)
  65                         return TRUE;
  66         }
  67
  68         return FALSE;
  69 }
  70
  71 const GList *
  72 gst_camerasrc_color_balance_list_channels( GstCameraSrc* camerasrc )
  73 {
  74   return camerasrc->colors;
  75 }
  76
  77 void
  78 gst_camerasrc_color_balance_set_value( GstCameraSrc* camerasrc, GstColorBalanceChannel* color_channel, gint value )
  79 {
  80         int error = CAMERASRC_ERR_UNKNOWN;
  81
  82         GstCameraSrcColorBalanceChannel *camerasrc_color_channel = GST_CAMERASRC_COLOR_BALANCE_CHANNEL( color_channel );
  83
  84         /* assert that we're opened and that we're using a known item */
  85         g_return_if_fail( camerasrc );
  86         g_return_if_fail( gst_camerasrc_color_balance_contains_channel( camerasrc, camerasrc_color_channel ) );
  87
  88         error = camerasrc_set_control( camerasrc->v4l2_handle, camerasrc_color_channel->id, value );
  89
  90         if( error != CAMERASRC_SUCCESS )
  91         {
  92                 GST_WARNING("Failed to Set ColorBalance[%s],value[%d]", camerasrc_color_channel->parent.label, value);
  93         }
  94 }
  95
  96 gint
  97 gst_camerasrc_color_balance_get_value( GstCameraSrc* camerasrc, GstColorBalanceChannel* color_channel )
  98 {
  99         int error, value;
 100         GstCameraSrcColorBalanceChannel *camerasrc_color_channel = GST_CAMERASRC_COLOR_BALANCE_CHANNEL( color_channel );
 101
 102         /* assert that we're opened and that we're using a known item */
 103         g_return_val_if_fail( camerasrc, FALSE );
 104         g_return_val_if_fail( gst_camerasrc_color_balance_contains_channel( camerasrc, camerasrc_color_channel ), FALSE );
 105
 106         error = camerasrc_get_control( camerasrc->v4l2_handle, camerasrc_color_channel->id, &value );
 107
 108         if( error != CAMERASRC_SUCCESS )
 109         {
 110                 GST_WARNING("Failed to Get ColorBalance[%s].", camerasrc_color_channel->parent.label);
 111                 return FALSE;
 112         }
 113
 114         return value;
 115 }
 116
 117