3 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@gmail.com>
6 * gstv4l2tuner.c: tuner interface implementation for V4L2
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
30 #include "gstv4l2object.h"
31 #include "gstv4l2tuner.h"
32 #include "gstv4l2object.h"
34 G_DEFINE_TYPE (GstV4l2TunerChannel, gst_v4l2_tuner_channel,
35 GST_TYPE_TUNER_CHANNEL);
37 G_DEFINE_TYPE (GstV4l2TunerNorm, gst_v4l2_tuner_norm, GST_TYPE_TUNER_NORM);
41 gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass * klass)
46 gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel)
48 channel->index = (guint32) - 1;
49 channel->tuner = (guint32) - 1;
50 channel->audio = (guint32) - 1;
54 gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass)
59 gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm)
64 static G_GNUC_UNUSED gboolean
65 gst_v4l2_tuner_contains_channel (GstV4l2Object * v4l2object,
66 GstV4l2TunerChannel * v4l2channel)
70 for (item = v4l2object->channels; item != NULL; item = item->next)
71 if (item->data == v4l2channel)
78 gst_v4l2_tuner_list_channels (GstV4l2Object * v4l2object)
80 return v4l2object->channels;
84 gst_v4l2_tuner_set_channel (GstV4l2Object * v4l2object,
85 GstTunerChannel * channel)
87 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
89 /* assert that we're opened and that we're using a known item */
90 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
91 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
94 if (v4l2object->set_in_out_func (v4l2object, v4l2channel->index)) {
95 gst_tuner_channel_changed (GST_TUNER (v4l2object->element), channel);
96 /* can FPS change here? */
105 gst_v4l2_tuner_get_channel (GstV4l2Object * v4l2object)
110 /* assert that we're opened and that we're using a known item */
111 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
113 if (v4l2object->get_in_out_func (v4l2object, &channel)) {
115 for (item = v4l2object->channels; item != NULL; item = item->next) {
116 if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
117 return (GstTunerChannel *) item->data;
125 static G_GNUC_UNUSED gboolean
126 gst_v4l2_tuner_contains_norm (GstV4l2Object * v4l2object,
127 GstV4l2TunerNorm * v4l2norm)
131 for (item = v4l2object->norms; item != NULL; item = item->next)
132 if (item->data == v4l2norm)
139 gst_v4l2_tuner_list_norms (GstV4l2Object * v4l2object)
141 return v4l2object->norms;
145 gst_v4l2_tuner_set_norm_and_notify (GstV4l2Object * v4l2object,
148 if (gst_v4l2_tuner_set_norm (v4l2object, norm)) {
150 g_object_notify (G_OBJECT (v4l2object->element), "norm");
156 gst_v4l2_tuner_set_norm (GstV4l2Object * v4l2object, GstTunerNorm * norm)
158 GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
160 /* assert that we're opened and that we're using a known item */
161 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
162 g_return_val_if_fail (gst_v4l2_tuner_contains_norm (v4l2object, v4l2norm),
165 if (gst_v4l2_set_norm (v4l2object, v4l2norm->index)) {
166 gst_tuner_norm_changed (GST_TUNER (v4l2object->element), norm);
167 if (v4l2object->update_fps_func)
168 v4l2object->update_fps_func (v4l2object);
177 gst_v4l2_tuner_get_norm (GstV4l2Object * v4l2object)
181 /* assert that we're opened and that we're using a known item */
182 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
184 gst_v4l2_get_norm (v4l2object, &norm);
186 return gst_v4l2_tuner_get_norm_by_std_id (v4l2object, norm);
190 gst_v4l2_tuner_get_norm_by_std_id (GstV4l2Object * v4l2object, v4l2_std_id norm)
194 for (item = v4l2object->norms; item != NULL; item = item->next) {
195 if (norm & GST_V4L2_TUNER_NORM (item->data)->index)
196 return (GstTunerNorm *) item->data;
203 gst_v4l2_tuner_get_std_id_by_norm (GstV4l2Object * v4l2object,
208 for (item = v4l2object->norms; item != NULL; item = item->next) {
209 if (norm == GST_TUNER_NORM (item->data))
210 return GST_V4L2_TUNER_NORM (item->data)->index;
217 gst_v4l2_tuner_set_frequency_and_notify (GstV4l2Object * v4l2object,
218 GstTunerChannel * channel, gulong frequency)
220 if (gst_v4l2_tuner_set_frequency (v4l2object, channel, frequency)) {
222 g_object_notify (G_OBJECT (v4l2object->element), "frequency");
228 gst_v4l2_tuner_set_frequency (GstV4l2Object * v4l2object,
229 GstTunerChannel * channel, gulong frequency)
231 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
234 /* assert that we're opened and that we're using a known item */
235 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
236 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
237 GST_TUNER_CHANNEL_FREQUENCY), FALSE);
238 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
239 v4l2channel), FALSE);
241 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
242 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
243 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
244 if (gst_v4l2_set_frequency (v4l2object, v4l2channel->tuner, frequency)) {
245 gst_tuner_frequency_changed (GST_TUNER (v4l2object->element), channel,
256 gst_v4l2_tuner_get_frequency (GstV4l2Object * v4l2object,
257 GstTunerChannel * channel)
259 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
261 gulong frequency = 0;
263 /* assert that we're opened and that we're using a known item */
264 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
265 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
266 GST_TUNER_CHANNEL_FREQUENCY), 0);
267 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
270 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
271 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
272 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
273 gst_v4l2_get_frequency (v4l2object, v4l2channel->tuner, &frequency);
281 gst_v4l2_tuner_signal_strength (GstV4l2Object * v4l2object,
282 GstTunerChannel * channel)
284 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
288 /* assert that we're opened and that we're using a known item */
289 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
290 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
291 GST_TUNER_CHANNEL_FREQUENCY), 0);
292 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
295 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
296 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
297 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
298 gst_v4l2_signal_strength (v4l2object, v4l2channel->tuner, &signal);