3 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * 2006 Edgard Lima <edgard.lima@indt.org.br>
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., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
30 #include "gstv4l2tuner.h"
31 #include "gstv4l2object.h"
32 #include "v4l2_calls.h"
33 #include "v4l2src_calls.h"
35 static void gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass *
37 static void gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel);
39 static void gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass);
40 static void gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm);
42 static GstTunerNormClass *norm_parent_class = NULL;
43 static GstTunerChannelClass *channel_parent_class = NULL;
46 gst_v4l2_tuner_channel_get_type (void)
48 static GType gst_v4l2_tuner_channel_type = 0;
50 if (!gst_v4l2_tuner_channel_type) {
51 static const GTypeInfo v4l2_tuner_channel_info = {
52 sizeof (GstV4l2TunerChannelClass),
55 (GClassInitFunc) gst_v4l2_tuner_channel_class_init,
58 sizeof (GstV4l2TunerChannel),
60 (GInstanceInitFunc) gst_v4l2_tuner_channel_init,
64 gst_v4l2_tuner_channel_type =
65 g_type_register_static (GST_TYPE_TUNER_CHANNEL,
66 "GstV4l2TunerChannel", &v4l2_tuner_channel_info, 0);
69 return gst_v4l2_tuner_channel_type;
73 gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass * klass)
75 channel_parent_class = g_type_class_peek_parent (klass);
79 gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel)
81 channel->index = (guint32) - 1;
82 channel->tuner = (guint32) - 1;
83 channel->audio = (guint32) - 1;
87 gst_v4l2_tuner_norm_get_type (void)
89 static GType gst_v4l2_tuner_norm_type = 0;
91 if (!gst_v4l2_tuner_norm_type) {
92 static const GTypeInfo v4l2_tuner_norm_info = {
93 sizeof (GstV4l2TunerNormClass),
96 (GClassInitFunc) gst_v4l2_tuner_norm_class_init,
99 sizeof (GstV4l2TunerNorm),
101 (GInstanceInitFunc) gst_v4l2_tuner_norm_init,
105 gst_v4l2_tuner_norm_type =
106 g_type_register_static (GST_TYPE_TUNER_NORM,
107 "GstV4l2TunerNorm", &v4l2_tuner_norm_info, 0);
110 return gst_v4l2_tuner_norm_type;
114 gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass)
116 norm_parent_class = g_type_class_peek_parent (klass);
120 gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm)
125 static G_GNUC_UNUSED gboolean
126 gst_v4l2_tuner_contains_channel (GstV4l2Object * v4l2object,
127 GstV4l2TunerChannel * v4l2channel)
131 for (item = v4l2object->channels; item != NULL; item = item->next)
132 if (item->data == v4l2channel)
139 gst_v4l2_tuner_list_channels (GstV4l2Object * v4l2object)
141 return v4l2object->channels;
145 gst_v4l2_tuner_set_channel (GstV4l2Object * v4l2object,
146 GstTunerChannel * channel)
148 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
150 /* assert that we're opened and that we're using a known item */
151 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
152 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
153 v4l2channel), FALSE);
155 if (v4l2object->set_in_out_func (v4l2object, v4l2channel->index)) {
156 gst_tuner_channel_changed (GST_TUNER (v4l2object->element), channel);
157 /* can FPS change here? */
166 gst_v4l2_tuner_get_channel (GstV4l2Object * v4l2object)
171 /* assert that we're opened and that we're using a known item */
172 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
174 if (v4l2object->get_in_out_func (v4l2object, &channel)) {
176 for (item = v4l2object->channels; item != NULL; item = item->next) {
177 if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
178 return (GstTunerChannel *) item->data;
186 static G_GNUC_UNUSED gboolean
187 gst_v4l2_tuner_contains_norm (GstV4l2Object * v4l2object,
188 GstV4l2TunerNorm * v4l2norm)
192 for (item = v4l2object->norms; item != NULL; item = item->next)
193 if (item->data == v4l2norm)
200 gst_v4l2_tuner_list_norms (GstV4l2Object * v4l2object)
202 return v4l2object->norms;
206 gst_v4l2_tuner_set_norm_and_notify (GstV4l2Object * v4l2object,
209 if (gst_v4l2_tuner_set_norm (v4l2object, norm)) {
211 g_object_notify (G_OBJECT (v4l2object->element), "norm");
217 gst_v4l2_tuner_set_norm (GstV4l2Object * v4l2object, GstTunerNorm * norm)
219 GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
221 /* assert that we're opened and that we're using a known item */
222 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
223 g_return_val_if_fail (gst_v4l2_tuner_contains_norm (v4l2object, v4l2norm),
226 if (gst_v4l2_set_norm (v4l2object, v4l2norm->index)) {
227 gst_tuner_norm_changed (GST_TUNER (v4l2object->element), norm);
228 if (v4l2object->update_fps_func)
229 v4l2object->update_fps_func (v4l2object);
238 gst_v4l2_tuner_get_norm (GstV4l2Object * v4l2object)
242 /* assert that we're opened and that we're using a known item */
243 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
245 gst_v4l2_get_norm (v4l2object, &norm);
247 return gst_v4l2_tuner_get_norm_by_std_id (v4l2object, norm);
251 gst_v4l2_tuner_get_norm_by_std_id (GstV4l2Object * v4l2object, v4l2_std_id norm)
255 for (item = v4l2object->norms; item != NULL; item = item->next) {
256 if (norm & GST_V4L2_TUNER_NORM (item->data)->index)
257 return (GstTunerNorm *) item->data;
264 gst_v4l2_tuner_get_std_id_by_norm (GstV4l2Object * v4l2object,
269 for (item = v4l2object->norms; item != NULL; item = item->next) {
270 if (norm == GST_TUNER_NORM (item->data))
271 return GST_V4L2_TUNER_NORM (item->data)->index;
278 gst_v4l2_tuner_set_frequency_and_notify (GstV4l2Object * v4l2object,
279 GstTunerChannel * channel, gulong frequency)
281 if (gst_v4l2_tuner_set_frequency (v4l2object, channel, frequency)) {
283 g_object_notify (G_OBJECT (v4l2object->element), "frequency");
289 gst_v4l2_tuner_set_frequency (GstV4l2Object * v4l2object,
290 GstTunerChannel * channel, gulong frequency)
292 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
295 /* assert that we're opened and that we're using a known item */
296 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
297 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
298 GST_TUNER_CHANNEL_FREQUENCY), FALSE);
299 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
300 v4l2channel), FALSE);
302 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
303 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
304 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
305 if (gst_v4l2_set_frequency (v4l2object, v4l2channel->tuner, frequency)) {
306 gst_tuner_frequency_changed (GST_TUNER (v4l2object->element), channel,
317 gst_v4l2_tuner_get_frequency (GstV4l2Object * v4l2object,
318 GstTunerChannel * channel)
320 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
322 gulong frequency = 0;
324 /* assert that we're opened and that we're using a known item */
325 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
326 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
327 GST_TUNER_CHANNEL_FREQUENCY), 0);
328 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
331 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
332 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
333 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
334 gst_v4l2_get_frequency (v4l2object, v4l2channel->tuner, &frequency);
342 gst_v4l2_tuner_signal_strength (GstV4l2Object * v4l2object,
343 GstTunerChannel * channel)
345 GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
349 /* assert that we're opened and that we're using a known item */
350 g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
351 g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
352 GST_TUNER_CHANNEL_FREQUENCY), 0);
353 g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
356 if (v4l2object->get_in_out_func (v4l2object, &chan)) {
357 if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
358 GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
359 gst_v4l2_signal_strength (v4l2object, v4l2channel->tuner, &signal);