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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Original commit message from CVS: Some changes proposed by wingo in bug #338818 (but not everything yet). Patch from Martin Rubli to fix framerate detection.
502 lines
14 KiB
C
502 lines
14 KiB
C
/* GStreamer Tuner interface implementation
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br>
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*
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* gstv4l2tuner.c: tuner interface implementation for V4L2
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstv4l2tuner.h"
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#include "gstv4l2element.h"
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#include "v4l2_calls.h"
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#include "v4l2src_calls.h"
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#include <sys/ioctl.h>
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static void gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass *
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klass);
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static void gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel);
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static void gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass);
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static void gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm);
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static const GList *gst_v4l2_tuner_list_channels (GstTuner * mixer);
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static void
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gst_v4l2_tuner_set_channel_and_notify (GstTuner * mixer,
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GstTunerChannel * channel);
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static GstTunerChannel *gst_v4l2_tuner_get_channel (GstTuner * mixer);
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static const GList *gst_v4l2_tuner_list_norms (GstTuner * mixer);
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static void
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gst_v4l2_tuner_set_norm_and_notify (GstTuner * mixer, GstTunerNorm * norm);
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static GstTunerNorm *gst_v4l2_tuner_get_norm (GstTuner * mixer);
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static void
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gst_v4l2_tuner_set_frequency_and_notify (GstTuner * mixer,
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GstTunerChannel * channel, gulong frequency);
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static gulong gst_v4l2_tuner_get_frequency (GstTuner * mixer,
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GstTunerChannel * channel);
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static gint gst_v4l2_tuner_signal_strength (GstTuner * mixer,
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GstTunerChannel * channel);
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static gboolean gst_v4l2_get_input (GstV4l2Element * v4l2element, gint * input);
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static gboolean gst_v4l2_set_input (GstV4l2Element * v4l2element, gint input);
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#if 0 /* output not handled by now */
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static gboolean
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gst_v4l2_get_output (GstV4l2Element * v4l2element, gint * output);
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static gboolean gst_v4l2_set_output (GstV4l2Element * v4l2element, gint output);
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#endif /* #if 0 - output not handled by now */
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static GstTunerNormClass *norm_parent_class = NULL;
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static GstTunerChannelClass *channel_parent_class = NULL;
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GType
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gst_v4l2_tuner_channel_get_type (void)
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{
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static GType gst_v4l2_tuner_channel_type = 0;
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if (!gst_v4l2_tuner_channel_type) {
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static const GTypeInfo v4l2_tuner_channel_info = {
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sizeof (GstV4l2TunerChannelClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_v4l2_tuner_channel_class_init,
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NULL,
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NULL,
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sizeof (GstV4l2TunerChannel),
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0,
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(GInstanceInitFunc) gst_v4l2_tuner_channel_init,
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NULL
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};
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gst_v4l2_tuner_channel_type =
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g_type_register_static (GST_TYPE_TUNER_CHANNEL,
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"GstV4l2TunerChannel", &v4l2_tuner_channel_info, 0);
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}
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return gst_v4l2_tuner_channel_type;
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}
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static void
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gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass * klass)
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{
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channel_parent_class = g_type_class_peek_parent (klass);
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}
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static void
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gst_v4l2_tuner_channel_init (GstV4l2TunerChannel * channel)
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{
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channel->index = (guint32) - 1;
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channel->tuner = (guint32) - 1;
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channel->audio = (guint32) - 1;
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}
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GType
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gst_v4l2_tuner_norm_get_type (void)
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{
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static GType gst_v4l2_tuner_norm_type = 0;
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if (!gst_v4l2_tuner_norm_type) {
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static const GTypeInfo v4l2_tuner_norm_info = {
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sizeof (GstV4l2TunerNormClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_v4l2_tuner_norm_class_init,
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NULL,
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NULL,
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sizeof (GstV4l2TunerNorm),
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0,
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(GInstanceInitFunc) gst_v4l2_tuner_norm_init,
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NULL
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};
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gst_v4l2_tuner_norm_type =
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g_type_register_static (GST_TYPE_TUNER_NORM,
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"GstV4l2TunerNorm", &v4l2_tuner_norm_info, 0);
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}
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return gst_v4l2_tuner_norm_type;
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}
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static void
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gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass * klass)
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{
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norm_parent_class = g_type_class_peek_parent (klass);
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}
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static void
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gst_v4l2_tuner_norm_init (GstV4l2TunerNorm * norm)
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{
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norm->index = 0;
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}
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void
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gst_v4l2_tuner_interface_init (GstTunerClass * klass)
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{
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/* default virtual functions */
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klass->list_channels = gst_v4l2_tuner_list_channels;
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klass->set_channel = gst_v4l2_tuner_set_channel_and_notify;
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klass->get_channel = gst_v4l2_tuner_get_channel;
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klass->list_norms = gst_v4l2_tuner_list_norms;
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klass->set_norm = gst_v4l2_tuner_set_norm_and_notify;
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klass->get_norm = gst_v4l2_tuner_get_norm;
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klass->set_frequency = gst_v4l2_tuner_set_frequency_and_notify;
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klass->get_frequency = gst_v4l2_tuner_get_frequency;
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klass->signal_strength = gst_v4l2_tuner_signal_strength;
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}
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#if 0 /* output not handled by now */
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static gboolean
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gst_v4l2_tuner_is_sink (GstV4l2Element * v4l2element)
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{
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GstPadDirection dir = GST_PAD_UNKNOWN;
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return (dir == GST_PAD_SINK);
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}
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#endif /* #if 0 - output not handled by now */
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static G_GNUC_UNUSED gboolean
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gst_v4l2_tuner_contains_channel (GstV4l2Element * v4l2element,
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GstV4l2TunerChannel * v4l2channel)
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{
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const GList *item;
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for (item = v4l2element->inputs; item != NULL; item = item->next)
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if (item->data == v4l2channel)
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return TRUE;
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return FALSE;
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}
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static const GList *
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gst_v4l2_tuner_list_channels (GstTuner * mixer)
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{
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return GST_V4L2ELEMENT (mixer)->inputs;
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}
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static void
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gst_v4l2_tuner_set_channel_and_notify (GstTuner * mixer,
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GstTunerChannel * channel)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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if (gst_v4l2_tuner_set_channel (mixer, channel)) {
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g_object_notify (G_OBJECT (v4l2element), "input");
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}
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}
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gboolean
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gst_v4l2_tuner_set_channel (GstTuner * mixer, GstTunerChannel * channel)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GstV4l2Src *v4l2src = GST_V4L2SRC (v4l2element);
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GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), FALSE);
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g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2element,
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v4l2channel), FALSE);
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if (
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#if 0 /* output not handled by now */
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gst_v4l2_tuner_is_sink (v4l2element) ?
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gst_v4l2_set_output (v4l2element, v4l2channel->index) :
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#endif /* #if 0 - output not handled by now */
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gst_v4l2_set_input (v4l2element, v4l2channel->index)
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) {
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gst_tuner_channel_changed (mixer, channel);
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gst_v4l2src_get_fps (v4l2src, &v4l2src->fps_n, &v4l2src->fps_d);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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gst_v4l2_get_input (GstV4l2Element * v4l2element, gint * input)
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{
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gint n;
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GST_DEBUG_OBJECT (v4l2element, "trying to get input");
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if (!GST_V4L2_IS_OPEN (v4l2element))
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return FALSE;
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if (ioctl (v4l2element->video_fd, VIDIOC_G_INPUT, &n) < 0) {
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GST_WARNING_OBJECT (v4l2element,
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"Failed to get current input on device %s: %s",
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v4l2element->videodev, g_strerror (errno));
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return FALSE;
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}
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*input = n;
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return TRUE;
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}
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static gboolean
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gst_v4l2_set_input (GstV4l2Element * v4l2element, gint input)
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{
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GST_DEBUG_OBJECT (v4l2element, "trying to set input to %d", input);
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if (!GST_V4L2_IS_OPEN (v4l2element))
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return FALSE;
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if (ioctl (v4l2element->video_fd, VIDIOC_S_INPUT, &input) < 0) {
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GST_WARNING_OBJECT (v4l2element, "Failed to set input %d on device %s: %s",
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input, v4l2element->videodev, g_strerror (errno));
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return FALSE;
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}
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return TRUE;
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}
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static GstTunerChannel *
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gst_v4l2_tuner_get_channel (GstTuner * mixer)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GList *item;
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gint channel;
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), NULL);
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#if 0 /* output not handled by now */
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if (gst_v4l2_tuner_is_sink (v4l2element))
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gst_v4l2_get_output (v4l2element, &channel);
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else
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#endif /* #if 0 - output not handled by now */
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gst_v4l2_get_input (v4l2element, &channel);
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for (item = v4l2element->inputs; item != NULL; item = item->next) {
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if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
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return (GstTunerChannel *) item->data;
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}
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return NULL;
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}
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static G_GNUC_UNUSED gboolean
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gst_v4l2_tuner_contains_norm (GstV4l2Element * v4l2element,
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GstV4l2TunerNorm * v4l2norm)
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{
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const GList *item;
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for (item = v4l2element->stds; item != NULL; item = item->next)
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if (item->data == v4l2norm)
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return TRUE;
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return FALSE;
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}
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static const GList *
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gst_v4l2_tuner_list_norms (GstTuner * mixer)
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{
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return GST_V4L2ELEMENT (mixer)->stds;
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}
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static void
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gst_v4l2_tuner_set_norm_and_notify (GstTuner * mixer, GstTunerNorm * norm)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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if (gst_v4l2_tuner_set_norm (mixer, norm)) {
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g_object_notify (G_OBJECT (v4l2element), "std");
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}
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}
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gboolean
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gst_v4l2_tuner_set_norm (GstTuner * mixer, GstTunerNorm * norm)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GstV4l2Src *v4l2src = GST_V4L2SRC (v4l2element);
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GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), FALSE);
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g_return_val_if_fail (gst_v4l2_tuner_contains_norm (v4l2element, v4l2norm),
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FALSE);
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if (gst_v4l2_set_norm (v4l2element, v4l2norm->index)) {
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gst_tuner_norm_changed (mixer, norm);
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gst_v4l2src_get_fps (v4l2src, &v4l2src->fps_n, &v4l2src->fps_d);
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return TRUE;
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}
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return FALSE;
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}
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static GstTunerNorm *
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gst_v4l2_tuner_get_norm (GstTuner * mixer)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GList *item;
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v4l2_std_id norm;
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), NULL);
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gst_v4l2_get_norm (v4l2element, &norm);
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for (item = v4l2element->stds; item != NULL; item = item->next) {
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if (norm == GST_V4L2_TUNER_NORM (item->data)->index)
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return (GstTunerNorm *) item->data;
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}
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return NULL;
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}
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static void
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gst_v4l2_tuner_set_frequency_and_notify (GstTuner * mixer,
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GstTunerChannel * channel, gulong frequency)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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if (gst_v4l2_tuner_set_frequency (mixer, channel, frequency)) {
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g_object_notify (G_OBJECT (v4l2element), "frequency");
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}
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}
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gboolean
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gst_v4l2_tuner_set_frequency (GstTuner * mixer,
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GstTunerChannel * channel, gulong frequency)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
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gint chan;
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), FALSE);
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g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
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GST_TUNER_CHANNEL_FREQUENCY), FALSE);
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g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2element,
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v4l2channel), FALSE);
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gst_v4l2_get_input (v4l2element, &chan);
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if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
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GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
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if (gst_v4l2_set_frequency (v4l2element, v4l2channel->tuner, frequency)) {
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gst_tuner_frequency_changed (mixer, channel, frequency);
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return TRUE;
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}
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}
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return FALSE;
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}
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static gulong
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gst_v4l2_tuner_get_frequency (GstTuner * mixer, GstTunerChannel * channel)
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{
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GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
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GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
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gint chan;
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gulong frequency = 0;
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/* assert that we're opened and that we're using a known item */
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g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), 0);
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g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
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GST_TUNER_CHANNEL_FREQUENCY), 0);
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g_return_val_if_fail (gst_v4l2_tuner_contains_channel
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(v4l2element, v4l2channel), 0);
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gst_v4l2_get_input (v4l2element, &chan);
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if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
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GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
|
|
gst_v4l2_get_frequency (v4l2element, v4l2channel->tuner, &frequency);
|
|
}
|
|
|
|
return frequency;
|
|
}
|
|
|
|
static gint
|
|
gst_v4l2_tuner_signal_strength (GstTuner * mixer, GstTunerChannel * channel)
|
|
{
|
|
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
|
|
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 (v4l2element), 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
|
|
(v4l2element, v4l2channel), 0);
|
|
|
|
gst_v4l2_get_input (v4l2element, &chan);
|
|
if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
|
|
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
|
|
gst_v4l2_signal_strength (v4l2element, v4l2channel->tuner, &signal);
|
|
}
|
|
|
|
return signal;
|
|
}
|
|
|
|
#if 0 /* output not handled by now */
|
|
|
|
static gboolean
|
|
gst_v4l2_get_output (GstV4l2Element * v4l2element, gint * output)
|
|
{
|
|
gint n;
|
|
|
|
GST_DEBUG_OBJECT (v4l2element, "trying to get output");
|
|
if (!GST_V4L2_IS_OPEN (v4l2element))
|
|
return FALSE;
|
|
|
|
if (ioctl (v4l2element->video_fd, VIDIOC_G_OUTPUT, &n) < 0) {
|
|
GST_WARNING_OBJECT (v4l2element,
|
|
"Failed to get current output on device %s: %s",
|
|
v4l2element->videodev, g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
*output = n;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_v4l2_set_output (GstV4l2Element * v4l2element, gint output)
|
|
{
|
|
GST_DEBUG_OBJECT (v4l2element, "trying to set output to %d", output);
|
|
if (!GST_V4L2_IS_OPEN (v4l2element))
|
|
return FALSE;
|
|
if (!GST_V4L2_IS_ACTIVE (v4l2element))
|
|
return FALSE;
|
|
|
|
if (ioctl (v4l2element->video_fd, VIDIOC_S_OUTPUT, &output) < 0) {
|
|
GST_WARNING_OBJECT (v4l2element,
|
|
"Failed to set current output on device %s to %d: %s",
|
|
v4l2element->videodev, output, g_strerror (errno));
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#endif /* #if 0 - output not handled by now */
|