gstreamer/sys/v4l2/gstv4l2tuner.c

303 lines
8.1 KiB
C

/* GStreamer
*
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* 2006 Edgard Lima <edgard.lima@gmail.com>
*
* 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;
}