gstreamer/sys/v4l/gstv4lcolorbalance.c

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/* 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)
{
Fix #337365 (g_type_class_ref <-> g_type_class_peek_parent) Original commit message from CVS: * ext/alsa/gstalsamixeroptions.c: (gst_alsa_mixer_options_class_init): * ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_class_init): * ext/ogg/gstoggdemux.c: (gst_ogg_pad_class_init): * ext/ogg/gstoggmux.c: (gst_ogg_mux_class_init): * ext/ogg/gstoggparse.c: (gst_ogg_parse_class_init): * gst-libs/gst/audio/gstaudioclock.c: (gst_audio_clock_class_init): * gst-libs/gst/audio/gstaudiofilter.c: (gst_audio_filter_class_init): * gst-libs/gst/audio/gstaudiosink.c: (gst_audioringbuffer_class_init): * gst-libs/gst/audio/gstaudiosrc.c: (gst_audioringbuffer_class_init): * gst-libs/gst/audio/gstringbuffer.c: (gst_ring_buffer_class_init): * gst-libs/gst/interfaces/colorbalancechannel.c: (gst_color_balance_channel_class_init): * gst-libs/gst/interfaces/mixeroptions.c: (gst_mixer_options_class_init): * gst-libs/gst/interfaces/mixertrack.c: (gst_mixer_track_class_init): * gst-libs/gst/interfaces/tunerchannel.c: (gst_tuner_channel_class_init): * gst-libs/gst/interfaces/tunernorm.c: (gst_tuner_norm_class_init): * gst-libs/gst/netbuffer/gstnetbuffer.c: (gst_netbuffer_class_init): * gst-libs/gst/rtp/gstbasertppayload.c: (gst_basertppayload_class_init): * gst/playback/gstdecodebin.c: (gst_decode_bin_class_init): * gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init): * gst/playback/gstplaybin.c: (gst_play_bin_class_init): * gst/playback/gststreaminfo.c: (gst_stream_info_class_init): * gst/playback/gststreamselector.c: (gst_stream_selector_class_init): * gst/subparse/gstsubparse.c: (gst_sub_parse_class_init): * gst/tcp/gsttcpclientsink.c: (gst_tcp_client_sink_class_init): * sys/v4l/gstv4lcolorbalance.c: (gst_v4l_color_balance_channel_class_init): * sys/v4l/gstv4ljpegsrc.c: (gst_v4ljpegsrc_class_init): * sys/v4l/gstv4lmjpegsink.c: (gst_v4lmjpegsink_class_init): * sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_class_init): * sys/v4l/gstv4ltuner.c: (gst_v4l_tuner_channel_class_init), (gst_v4l_tuner_norm_class_init): * sys/ximage/ximagesink.c: (gst_ximagesink_class_init): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_class_init): * tests/old/testsuite/alsa/sinesrc.c: (sinesrc_class_init): Fix #337365 (g_type_class_ref <-> g_type_class_peek_parent)
2006-04-08 21:02:53 +00:00
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;
}