diff options
Diffstat (limited to 'gst-libs/gst/tuner/tuner.c')
| -rw-r--r-- | gst-libs/gst/tuner/tuner.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/gst-libs/gst/tuner/tuner.c b/gst-libs/gst/tuner/tuner.c new file mode 100644 index 00000000..43dda8d0 --- /dev/null +++ b/gst-libs/gst/tuner/tuner.c @@ -0,0 +1,190 @@ +/* GStreamer Tuner + * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> + * + * tuner.c: tuner design virtual class function wrappers + * + * 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 "tuner.h" + +static void gst_tuner_class_init (GstTunerClass *klass); + +GType +gst_tuner_get_type (void) +{ + static GType gst_tuner_type = 0; + + if (!gst_tuner_type) { + static const GTypeInfo gst_tuner_info = { + sizeof (GstTunerClass), + (GBaseInitFunc) gst_tuner_class_init, + NULL, + NULL, + NULL, + NULL, + 0, + 0, + NULL, + }; + + gst_tuner_type = g_type_register_static (G_TYPE_INTERFACE, + "GstTuner", + &gst_tuner_info, 0); + g_type_interface_add_prerequisite (gst_tuner_type, + GST_TYPE_INTERFACE); + } + + return gst_tuner_type; +} + +static void +gst_tuner_class_init (GstTunerClass *klass) +{ + /* default virtual functions */ + klass->list_channels = NULL; + klass->set_channel = NULL; + klass->get_channel = NULL; + + klass->list_norms = NULL; + klass->set_norm = NULL; + klass->get_norm = NULL; + + klass->set_frequency = NULL; + klass->get_frequency = NULL; + klass->signal_strength = NULL; +} + +const GList * +gst_tuner_list_channels (GstTuner *tuner) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->list_channels) { + return klass->list_channels (tuner); + } + + return NULL; +} + +void +gst_tuner_set_channel (GstTuner *tuner, + GstTunerChannel *channel) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->set_channel) { + klass->set_channel (tuner, channel); + } +} + +const GstTunerChannel * +gst_tuner_get_channel (GstTuner *tuner) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->get_channel) { + return klass->get_channel (tuner); + } + + return NULL; +} + +const GList * +gst_tuner_list_norms (GstTuner *tuner) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->list_norms) { + return klass->list_norms (tuner); + } + + return NULL; +} + +void +gst_tuner_set_norm (GstTuner *tuner, + GstTunerNorm *norm) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->set_norm) { + klass->set_norm (tuner, norm); + } +} + +const GstTunerNorm * +gst_tuner_get_norm (GstTuner *tuner) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + if (klass->get_norm) { + return klass->get_norm (tuner); + } + + return NULL; +} + +void +gst_tuner_set_frequency (GstTuner *tuner, + GstTunerChannel *channel, + gulong frequency) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + g_return_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel, + GST_TUNER_CHANNEL_FREQUENCY)); + + if (klass->set_frequency) { + klass->set_frequency (tuner, channel, frequency); + } +} + +gulong +gst_tuner_get_frequency (GstTuner *tuner, + GstTunerChannel *channel) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel, + GST_TUNER_CHANNEL_FREQUENCY), 0); + + if (klass->get_frequency) { + return klass->get_frequency (tuner, channel); + } + + return 0; +} + +gint +gst_tuner_signal_strength (GstTuner *tuner, + GstTunerChannel *channel) +{ + GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner); + + g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel, + GST_TUNER_CHANNEL_FREQUENCY), 0); + + if (klass->signal_strength) { + return klass->signal_strength (tuner, channel); + } + + return 0; +} |