mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
The change should have been from PARAM_CONSTRUCT_ONLY to
PARAM_CONSTRUCT, otherwise bindings are affected, since
they look for the CONSTRUCT flag.
See ec55363d
495 lines
16 KiB
C
495 lines
16 KiB
C
/* GStreamer
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*
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* Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net>
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*
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* gstdirectcontrolbinding.c: Direct attachment for control sources
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:gstdirectcontrolbinding
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* @short_description: direct attachment for control sources
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*
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* A value mapping object that attaches control sources to gobject properties. It
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* will map the control values [0.0 ... 1.0] to the target property range. If a
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* control value is outside of the range, it will be clipped.
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*/
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#include <glib-object.h>
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#include <gst/gst.h>
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#include "gstdirectcontrolbinding.h"
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#include <gst/math-compat.h>
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#define GST_CAT_DEFAULT control_binding_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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static GObject *gst_direct_control_binding_constructor (GType type,
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guint n_construct_params, GObjectConstructParam * construct_params);
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static void gst_direct_control_binding_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_direct_control_binding_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static void gst_direct_control_binding_dispose (GObject * object);
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static void gst_direct_control_binding_finalize (GObject * object);
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static gboolean gst_direct_control_binding_sync_values (GstControlBinding *
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_self, GstObject * object, GstClockTime timestamp, GstClockTime last_sync);
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static GValue *gst_direct_control_binding_get_value (GstControlBinding * _self,
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GstClockTime timestamp);
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static gboolean gst_direct_control_binding_get_value_array (GstControlBinding *
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_self, GstClockTime timestamp, GstClockTime interval, guint n_values,
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gpointer values);
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static gboolean gst_direct_control_binding_get_g_value_array (GstControlBinding
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* _self, GstClockTime timestamp, GstClockTime interval, guint n_values,
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GValue * values);
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#define _do_init \
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gstdirectcontrolbinding", 0, \
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"dynamic parameter control source attachment");
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#define gst_direct_control_binding_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstDirectControlBinding, gst_direct_control_binding,
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GST_TYPE_CONTROL_BINDING, _do_init);
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enum
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{
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PROP_0,
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PROP_CS,
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PROP_LAST
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};
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static GParamSpec *properties[PROP_LAST];
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/* mapping functions */
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#define DEFINE_CONVERT(type,Type,TYPE,ROUNDING_OP) \
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static void \
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convert_g_value_to_##type (GstDirectControlBinding *self, gdouble s, GValue *d) \
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{ \
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GParamSpec##Type *pspec = G_PARAM_SPEC_##TYPE (((GstControlBinding *)self)->pspec); \
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g##type v; \
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\
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s = CLAMP (s, 0.0, 1.0); \
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v = (g##type) ROUNDING_OP (pspec->minimum * (1-s)) + (g##type) ROUNDING_OP (pspec->maximum * s); \
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g_value_set_##type (d, v); \
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} \
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\
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static void \
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convert_value_to_##type (GstDirectControlBinding *self, gdouble s, gpointer d_) \
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{ \
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GParamSpec##Type *pspec = G_PARAM_SPEC_##TYPE (((GstControlBinding *)self)->pspec); \
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g##type *d = (g##type *)d_; \
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\
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s = CLAMP (s, 0.0, 1.0); \
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*d = (g##type) ROUNDING_OP (pspec->minimum * (1-s)) + (g##type) ROUNDING_OP (pspec->maximum * s); \
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}
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DEFINE_CONVERT (int, Int, INT, rint);
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DEFINE_CONVERT (uint, UInt, UINT, rint);
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DEFINE_CONVERT (long, Long, LONG, rint);
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DEFINE_CONVERT (ulong, ULong, ULONG, rint);
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DEFINE_CONVERT (int64, Int64, INT64, rint);
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DEFINE_CONVERT (uint64, UInt64, UINT64, rint);
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DEFINE_CONVERT (float, Float, FLOAT, /*NOOP*/);
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DEFINE_CONVERT (double, Double, DOUBLE, /*NOOP*/);
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static void
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convert_g_value_to_boolean (GstDirectControlBinding * self, gdouble s,
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GValue * d)
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{
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s = CLAMP (s, 0.0, 1.0);
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g_value_set_boolean (d, (gboolean) (s + 0.5));
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}
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static void
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convert_value_to_boolean (GstDirectControlBinding * self, gdouble s,
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gpointer d_)
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{
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gboolean *d = (gboolean *) d_;
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s = CLAMP (s, 0.0, 1.0);
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*d = (gboolean) (s + 0.5);
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}
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static void
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convert_g_value_to_enum (GstDirectControlBinding * self, gdouble s, GValue * d)
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{
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GParamSpecEnum *pspec =
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G_PARAM_SPEC_ENUM (((GstControlBinding *) self)->pspec);
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GEnumClass *e = pspec->enum_class;
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gint v;
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s = CLAMP (s, 0.0, 1.0);
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v = s * (e->n_values - 1);
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g_value_set_enum (d, e->values[v].value);
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}
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static void
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convert_value_to_enum (GstDirectControlBinding * self, gdouble s, gpointer d_)
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{
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GParamSpecEnum *pspec =
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G_PARAM_SPEC_ENUM (((GstControlBinding *) self)->pspec);
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GEnumClass *e = pspec->enum_class;
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gint *d = (gint *) d_;
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s = CLAMP (s, 0.0, 1.0);
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*d = e->values[(gint) (s * (e->n_values - 1))].value;
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}
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/* vmethods */
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static void
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gst_direct_control_binding_class_init (GstDirectControlBindingClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstControlBindingClass *control_binding_class =
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GST_CONTROL_BINDING_CLASS (klass);
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gobject_class->constructor = gst_direct_control_binding_constructor;
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gobject_class->set_property = gst_direct_control_binding_set_property;
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gobject_class->get_property = gst_direct_control_binding_get_property;
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gobject_class->dispose = gst_direct_control_binding_dispose;
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gobject_class->finalize = gst_direct_control_binding_finalize;
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control_binding_class->sync_values = gst_direct_control_binding_sync_values;
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control_binding_class->get_value = gst_direct_control_binding_get_value;
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control_binding_class->get_value_array =
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gst_direct_control_binding_get_value_array;
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control_binding_class->get_g_value_array =
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gst_direct_control_binding_get_g_value_array;
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properties[PROP_CS] =
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g_param_spec_object ("control-source", "ControlSource",
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"The control source",
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GST_TYPE_CONTROL_SOURCE,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (gobject_class, PROP_LAST, properties);
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}
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static void
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gst_direct_control_binding_init (GstDirectControlBinding * self)
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{
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}
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static GObject *
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gst_direct_control_binding_constructor (GType type, guint n_construct_params,
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GObjectConstructParam * construct_params)
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{
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GstDirectControlBinding *self;
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self =
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GST_DIRECT_CONTROL_BINDING (G_OBJECT_CLASS (parent_class)->constructor
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(type, n_construct_params, construct_params));
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if (GST_CONTROL_BINDING_PSPEC (self)) {
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GType type, base;
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base = type = G_PARAM_SPEC_VALUE_TYPE (GST_CONTROL_BINDING_PSPEC (self));
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g_value_init (&self->cur_value, type);
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while ((type = g_type_parent (type)))
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base = type;
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GST_DEBUG (" using type %s", g_type_name (base));
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/* select mapping function */
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switch (base) {
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case G_TYPE_INT:
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self->convert_g_value = convert_g_value_to_int;
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self->convert_value = convert_value_to_int;
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self->byte_size = sizeof (gint);
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break;
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case G_TYPE_UINT:
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self->convert_g_value = convert_g_value_to_uint;
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self->convert_value = convert_value_to_uint;
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self->byte_size = sizeof (guint);
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break;
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case G_TYPE_LONG:
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self->convert_g_value = convert_g_value_to_long;
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self->convert_value = convert_value_to_long;
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self->byte_size = sizeof (glong);
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break;
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case G_TYPE_ULONG:
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self->convert_g_value = convert_g_value_to_ulong;
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self->convert_value = convert_value_to_ulong;
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self->byte_size = sizeof (gulong);
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break;
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case G_TYPE_INT64:
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self->convert_g_value = convert_g_value_to_int64;
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self->convert_value = convert_value_to_int64;
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self->byte_size = sizeof (gint64);
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break;
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case G_TYPE_UINT64:
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self->convert_g_value = convert_g_value_to_uint64;
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self->convert_value = convert_value_to_uint64;
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self->byte_size = sizeof (guint64);
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break;
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case G_TYPE_FLOAT:
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self->convert_g_value = convert_g_value_to_float;
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self->convert_value = convert_value_to_float;
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self->byte_size = sizeof (gfloat);
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break;
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case G_TYPE_DOUBLE:
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self->convert_g_value = convert_g_value_to_double;
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self->convert_value = convert_value_to_double;
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self->byte_size = sizeof (gdouble);
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break;
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case G_TYPE_BOOLEAN:
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self->convert_g_value = convert_g_value_to_boolean;
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self->convert_value = convert_value_to_boolean;
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self->byte_size = sizeof (gboolean);
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break;
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case G_TYPE_ENUM:
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self->convert_g_value = convert_g_value_to_enum;
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self->convert_value = convert_value_to_enum;
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self->byte_size = sizeof (gint);
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break;
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default:
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GST_WARNING ("incomplete implementation for paramspec type '%s'",
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G_PARAM_SPEC_TYPE_NAME (GST_CONTROL_BINDING_PSPEC (self)));
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GST_CONTROL_BINDING_PSPEC (self) = NULL;
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break;
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}
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}
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return (GObject *) self;
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}
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static void
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gst_direct_control_binding_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (object);
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switch (prop_id) {
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case PROP_CS:
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self->cs = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_direct_control_binding_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (object);
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switch (prop_id) {
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case PROP_CS:
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g_value_set_object (value, self->cs);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_direct_control_binding_dispose (GObject * object)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (object);
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if (self->cs)
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gst_object_replace ((GstObject **) & self->cs, NULL);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gst_direct_control_binding_finalize (GObject * object)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (object);
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g_value_unset (&self->cur_value);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_direct_control_binding_sync_values (GstControlBinding * _self,
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GstObject * object, GstClockTime timestamp, GstClockTime last_sync)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
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gdouble src_val;
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gboolean ret;
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g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
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g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
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GST_LOG_OBJECT (object, "property '%s' at ts=%" GST_TIME_FORMAT,
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_self->name, GST_TIME_ARGS (timestamp));
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ret = gst_control_source_get_value (self->cs, timestamp, &src_val);
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if (G_LIKELY (ret)) {
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GST_LOG_OBJECT (object, " new value %lf", src_val);
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/* always set the value for first time, but then only if it changed
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* this should limit g_object_notify invocations.
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* FIXME: can we detect negative playback rates?
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*/
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if ((timestamp < last_sync) || (src_val != self->last_value)) {
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GValue *dst_val = &self->cur_value;
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GST_LOG_OBJECT (object, " mapping %s to value of type %s", _self->name,
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G_VALUE_TYPE_NAME (dst_val));
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/* run mapping function to convert gdouble to GValue */
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self->convert_g_value (self, src_val, dst_val);
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/* we can make this faster
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* http://bugzilla.gnome.org/show_bug.cgi?id=536939
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*/
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g_object_set_property ((GObject *) object, _self->name, dst_val);
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self->last_value = src_val;
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}
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} else {
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GST_DEBUG_OBJECT (object, "no control value for param %s", _self->name);
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}
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return (ret);
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}
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static GValue *
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gst_direct_control_binding_get_value (GstControlBinding * _self,
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GstClockTime timestamp)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
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GValue *dst_val = NULL;
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gdouble src_val;
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g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), NULL);
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g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), NULL);
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g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
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/* get current value via control source */
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if (gst_control_source_get_value (self->cs, timestamp, &src_val)) {
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dst_val = g_new0 (GValue, 1);
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g_value_init (dst_val, G_PARAM_SPEC_VALUE_TYPE (_self->pspec));
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self->convert_g_value (self, src_val, dst_val);
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} else {
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GST_LOG ("no control value for property %s at ts %" GST_TIME_FORMAT,
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_self->name, GST_TIME_ARGS (timestamp));
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}
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return dst_val;
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}
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static gboolean
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gst_direct_control_binding_get_value_array (GstControlBinding * _self,
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GstClockTime timestamp, GstClockTime interval, guint n_values,
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gpointer values_)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
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gint i;
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gdouble *src_val;
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gboolean res = FALSE;
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GstDirectControlBindingConvertValue convert;
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gint byte_size;
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guint8 *values = (guint8 *) values_;
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g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
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g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
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g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
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g_return_val_if_fail (values, FALSE);
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g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
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convert = self->convert_value;
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byte_size = self->byte_size;
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src_val = g_new0 (gdouble, n_values);
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if ((res = gst_control_source_get_value_array (self->cs, timestamp,
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interval, n_values, src_val))) {
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for (i = 0; i < n_values; i++) {
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/* we will only get NAN for sparse control sources, such as triggers */
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if (!isnan (src_val[i])) {
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convert (self, src_val[i], (gpointer) values);
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} else {
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GST_LOG ("no control value for property %s at index %d", _self->name,
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i);
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}
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values += byte_size;
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}
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} else {
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GST_LOG ("failed to get control value for property %s at ts %"
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GST_TIME_FORMAT, _self->name, GST_TIME_ARGS (timestamp));
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}
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g_free (src_val);
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return res;
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}
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static gboolean
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gst_direct_control_binding_get_g_value_array (GstControlBinding * _self,
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GstClockTime timestamp, GstClockTime interval, guint n_values,
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GValue * values)
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{
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GstDirectControlBinding *self = GST_DIRECT_CONTROL_BINDING (_self);
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gint i;
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gdouble *src_val;
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gboolean res = FALSE;
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GType type;
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GstDirectControlBindingConvertGValue convert;
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g_return_val_if_fail (GST_IS_DIRECT_CONTROL_BINDING (self), FALSE);
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g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
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g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
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g_return_val_if_fail (values, FALSE);
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g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE);
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convert = self->convert_g_value;
|
|
type = G_PARAM_SPEC_VALUE_TYPE (_self->pspec);
|
|
|
|
src_val = g_new0 (gdouble, n_values);
|
|
if ((res = gst_control_source_get_value_array (self->cs, timestamp,
|
|
interval, n_values, src_val))) {
|
|
for (i = 0; i < n_values; i++) {
|
|
/* we will only get NAN for sparse control sources, such as triggers */
|
|
if (!isnan (src_val[i])) {
|
|
g_value_init (&values[i], type);
|
|
convert (self, src_val[i], &values[i]);
|
|
} else {
|
|
GST_LOG ("no control value for property %s at index %d", _self->name,
|
|
i);
|
|
}
|
|
}
|
|
} else {
|
|
GST_LOG ("failed to get control value for property %s at ts %"
|
|
GST_TIME_FORMAT, _self->name, GST_TIME_ARGS (timestamp));
|
|
}
|
|
g_free (src_val);
|
|
return res;
|
|
}
|
|
|
|
/* functions */
|
|
|
|
/**
|
|
* gst_direct_control_binding_new:
|
|
* @object: the object of the property
|
|
* @property_name: the property-name to attach the control source
|
|
* @cs: the control source
|
|
*
|
|
* Create a new control-binding that attaches the #GstControlSource to the
|
|
* #GObject property.
|
|
*
|
|
* Returns: (transfer floating): the new #GstDirectControlBinding
|
|
*/
|
|
GstControlBinding *
|
|
gst_direct_control_binding_new (GstObject * object, const gchar * property_name,
|
|
GstControlSource * cs)
|
|
{
|
|
return (GstControlBinding *) g_object_new (GST_TYPE_DIRECT_CONTROL_BINDING,
|
|
"object", object, "name", property_name, "control-source", cs, NULL);
|
|
}
|