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Diffstat (limited to 'sys/v4l2/gstv4l2tuner.c')
-rwxr-xr-xsys/v4l2/gstv4l2tuner.c303
1 files changed, 303 insertions, 0 deletions
diff --git a/sys/v4l2/gstv4l2tuner.c b/sys/v4l2/gstv4l2tuner.c
new file mode 100755
index 0000000..3a82eb7
--- /dev/null
+++ b/sys/v4l2/gstv4l2tuner.c
@@ -0,0 +1,303 @@
+/* GStreamer
+ *
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ * 2006 Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * gstv4l2tuner.c: tuner interface implementation for V4L2
+ *
+ * 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., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+
+#include "gstv4l2tuner.h"
+#include "gstv4l2object.h"
+#include "v4l2_calls.h"
+
+G_DEFINE_TYPE (GstV4l2TunerChannel, gst_v4l2_tuner_channel,
+ GST_TYPE_TUNER_CHANNEL);
+
+G_DEFINE_TYPE (GstV4l2TunerNorm, gst_v4l2_tuner_norm, GST_TYPE_TUNER_NORM);
+
+
+static void
+gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass * klass)
+{
+}
+
+static void
+gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel)
+{
+ channel->index = (guint32) - 1;
+ channel->tuner = (guint32) - 1;
+ channel->audio = (guint32) - 1;
+}
+
+static void
+gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass)
+{
+}
+
+static void
+gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm)
+{
+ norm->index = 0;
+}
+
+static G_GNUC_UNUSED gboolean
+gst_v4l2_tuner_contains_channel (GstV4l2Object * v4l2object,
+ GstV4l2TunerChannel * v4l2channel)
+{
+ const GList *item;
+
+ for (item = v4l2object->channels; item != NULL; item = item->next)
+ if (item->data == v4l2channel)
+ return TRUE;
+
+ return FALSE;
+}
+
+const GList *
+gst_v4l2_tuner_list_channels (GstV4l2Object * v4l2object)
+{
+ return v4l2object->channels;
+}
+
+gboolean
+gst_v4l2_tuner_set_channel (GstV4l2Object * v4l2object,
+ GstTunerChannel * channel)
+{
+ GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
+ g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
+ v4l2channel), FALSE);
+
+ if (v4l2object->set_in_out_func (v4l2object, v4l2channel->index)) {
+ gst_tuner_channel_changed (GST_TUNER (v4l2object->element), channel);
+ /* can FPS change here? */
+ return TRUE;
+ }
+
+ return FALSE;
+
+}
+
+GstTunerChannel *
+gst_v4l2_tuner_get_channel (GstV4l2Object * v4l2object)
+{
+ GList *item;
+ gint channel;
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
+
+ if (v4l2object->get_in_out_func (v4l2object, &channel)) {
+
+ for (item = v4l2object->channels; item != NULL; item = item->next) {
+ if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
+ return (GstTunerChannel *) item->data;
+ }
+
+ }
+
+ return NULL;
+}
+
+static G_GNUC_UNUSED gboolean
+gst_v4l2_tuner_contains_norm (GstV4l2Object * v4l2object,
+ GstV4l2TunerNorm * v4l2norm)
+{
+ const GList *item;
+
+ for (item = v4l2object->norms; item != NULL; item = item->next)
+ if (item->data == v4l2norm)
+ return TRUE;
+
+ return FALSE;
+}
+
+const GList *
+gst_v4l2_tuner_list_norms (GstV4l2Object * v4l2object)
+{
+ return v4l2object->norms;
+}
+
+void
+gst_v4l2_tuner_set_norm_and_notify (GstV4l2Object * v4l2object,
+ GstTunerNorm * norm)
+{
+ if (gst_v4l2_tuner_set_norm (v4l2object, norm)) {
+#if 0
+ g_object_notify (G_OBJECT (v4l2object->element), "norm");
+#endif
+ }
+}
+
+gboolean
+gst_v4l2_tuner_set_norm (GstV4l2Object * v4l2object, GstTunerNorm * norm)
+{
+ GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
+ g_return_val_if_fail (gst_v4l2_tuner_contains_norm (v4l2object, v4l2norm),
+ FALSE);
+
+ if (gst_v4l2_set_norm (v4l2object, v4l2norm->index)) {
+ gst_tuner_norm_changed (GST_TUNER (v4l2object->element), norm);
+ if (v4l2object->update_fps_func)
+ v4l2object->update_fps_func (v4l2object);
+ return TRUE;
+ }
+
+ return FALSE;
+
+}
+
+GstTunerNorm *
+gst_v4l2_tuner_get_norm (GstV4l2Object * v4l2object)
+{
+ v4l2_std_id norm;
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), NULL);
+
+ gst_v4l2_get_norm (v4l2object, &norm);
+
+ return gst_v4l2_tuner_get_norm_by_std_id (v4l2object, norm);
+}
+
+GstTunerNorm *
+gst_v4l2_tuner_get_norm_by_std_id (GstV4l2Object * v4l2object, v4l2_std_id norm)
+{
+ GList *item;
+
+ for (item = v4l2object->norms; item != NULL; item = item->next) {
+ if (norm & GST_V4L2_TUNER_NORM (item->data)->index)
+ return (GstTunerNorm *) item->data;
+ }
+
+ return NULL;
+}
+
+v4l2_std_id
+gst_v4l2_tuner_get_std_id_by_norm (GstV4l2Object * v4l2object,
+ GstTunerNorm * norm)
+{
+ GList *item;
+
+ for (item = v4l2object->norms; item != NULL; item = item->next) {
+ if (norm == GST_TUNER_NORM (item->data))
+ return GST_V4L2_TUNER_NORM (item->data)->index;
+ }
+
+ return 0;
+}
+
+void
+gst_v4l2_tuner_set_frequency_and_notify (GstV4l2Object * v4l2object,
+ GstTunerChannel * channel, gulong frequency)
+{
+ if (gst_v4l2_tuner_set_frequency (v4l2object, channel, frequency)) {
+#if 0
+ g_object_notify (G_OBJECT (v4l2object->element), "frequency");
+#endif
+ }
+}
+
+gboolean
+gst_v4l2_tuner_set_frequency (GstV4l2Object * v4l2object,
+ GstTunerChannel * channel, gulong frequency)
+{
+ GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
+ gint chan;
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), FALSE);
+ g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
+ GST_TUNER_CHANNEL_FREQUENCY), FALSE);
+ g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
+ v4l2channel), FALSE);
+
+ if (v4l2object->get_in_out_func (v4l2object, &chan)) {
+ if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
+ GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
+ if (gst_v4l2_set_frequency (v4l2object, v4l2channel->tuner, frequency)) {
+ gst_tuner_frequency_changed (GST_TUNER (v4l2object->element), channel,
+ frequency);
+ return TRUE;
+ }
+ }
+ }
+
+ return FALSE;
+}
+
+gulong
+gst_v4l2_tuner_get_frequency (GstV4l2Object * v4l2object,
+ GstTunerChannel * channel)
+{
+ GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
+ gint chan;
+ gulong frequency = 0;
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
+ g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
+ GST_TUNER_CHANNEL_FREQUENCY), 0);
+ g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
+ v4l2channel), 0);
+
+ if (v4l2object->get_in_out_func (v4l2object, &chan)) {
+ if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
+ GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
+ gst_v4l2_get_frequency (v4l2object, v4l2channel->tuner, &frequency);
+ }
+ }
+
+ return frequency;
+}
+
+gint
+gst_v4l2_tuner_signal_strength (GstV4l2Object * v4l2object,
+ GstTunerChannel * channel)
+{
+ GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
+ gint chan;
+ gulong signal = 0;
+
+ /* assert that we're opened and that we're using a known item */
+ g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2object), 0);
+ g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
+ GST_TUNER_CHANNEL_FREQUENCY), 0);
+ g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2object,
+ v4l2channel), 0);
+
+ if (v4l2object->get_in_out_func (v4l2object, &chan)) {
+ if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
+ GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
+ gst_v4l2_signal_strength (v4l2object, v4l2channel->tuner, &signal);
+ }
+ }
+
+ return signal;
+}
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