| /* GStreamer |
| * |
| * Copyright (C) 2011 Stefan Sauer <ensonic@users.sf.net> |
| * |
| * gstargbcontrolbinding.c: Attachment for multiple control sources to gargb |
| * properties |
| * |
| * 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. |
| */ |
| /** |
| * SECTION:gstargbcontrolbinding |
| * @short_description: attachment for control sources to argb properties |
| * |
| * A value mapping object that attaches multiple control sources to a guint |
| * gobject properties representing a color. A control value of 0.0 will turn the |
| * color component off and a value of 1.0 will be the color level. |
| */ |
| |
| #include <glib-object.h> |
| #include <gst/gst.h> |
| |
| #include "gstargbcontrolbinding.h" |
| |
| #include <gst/math-compat.h> |
| |
| #define GST_CAT_DEFAULT control_binding_debug |
| GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); |
| |
| static GObject *gst_argb_control_binding_constructor (GType type, |
| guint n_construct_params, GObjectConstructParam * construct_params); |
| static void gst_argb_control_binding_set_property (GObject * object, |
| guint prop_id, const GValue * value, GParamSpec * pspec); |
| static void gst_argb_control_binding_get_property (GObject * object, |
| guint prop_id, GValue * value, GParamSpec * pspec); |
| static void gst_argb_control_binding_dispose (GObject * object); |
| static void gst_argb_control_binding_finalize (GObject * object); |
| |
| static gboolean gst_argb_control_binding_sync_values (GstControlBinding * _self, |
| GstObject * object, GstClockTime timestamp, GstClockTime last_sync); |
| static GValue *gst_argb_control_binding_get_value (GstControlBinding * _self, |
| GstClockTime timestamp); |
| static gboolean gst_argb_control_binding_get_value_array (GstControlBinding * |
| _self, GstClockTime timestamp, GstClockTime interval, guint n_values, |
| gpointer values); |
| static gboolean gst_argb_control_binding_get_g_value_array (GstControlBinding * |
| _self, GstClockTime timestamp, GstClockTime interval, guint n_values, |
| GValue * values); |
| |
| #define _do_init \ |
| GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "gstargbcontrolbinding", 0, \ |
| "dynamic parameter control source attachment"); |
| |
| #define gst_argb_control_binding_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstARGBControlBinding, gst_argb_control_binding, |
| GST_TYPE_CONTROL_BINDING, _do_init); |
| |
| enum |
| { |
| PROP_0, |
| PROP_CS_A, |
| PROP_CS_R, |
| PROP_CS_G, |
| PROP_CS_B, |
| PROP_LAST |
| }; |
| |
| static GParamSpec *properties[PROP_LAST]; |
| |
| /* vmethods */ |
| |
| static void |
| gst_argb_control_binding_class_init (GstARGBControlBindingClass * klass) |
| { |
| GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
| GstControlBindingClass *control_binding_class = |
| GST_CONTROL_BINDING_CLASS (klass); |
| |
| gobject_class->constructor = gst_argb_control_binding_constructor; |
| gobject_class->set_property = gst_argb_control_binding_set_property; |
| gobject_class->get_property = gst_argb_control_binding_get_property; |
| gobject_class->dispose = gst_argb_control_binding_dispose; |
| gobject_class->finalize = gst_argb_control_binding_finalize; |
| |
| control_binding_class->sync_values = gst_argb_control_binding_sync_values; |
| control_binding_class->get_value = gst_argb_control_binding_get_value; |
| control_binding_class->get_value_array = |
| gst_argb_control_binding_get_value_array; |
| control_binding_class->get_g_value_array = |
| gst_argb_control_binding_get_g_value_array; |
| |
| properties[PROP_CS_A] = |
| g_param_spec_object ("control-source-a", "ControlSource A", |
| "The control source for the alpha color component", |
| GST_TYPE_CONTROL_SOURCE, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); |
| |
| properties[PROP_CS_R] = |
| g_param_spec_object ("control-source-r", "ControlSource R", |
| "The control source for the red color component", |
| GST_TYPE_CONTROL_SOURCE, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); |
| |
| properties[PROP_CS_G] = |
| g_param_spec_object ("control-source-g", "ControlSource G", |
| "The control source for the green color component", |
| GST_TYPE_CONTROL_SOURCE, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); |
| |
| properties[PROP_CS_B] = |
| g_param_spec_object ("control-source-b", "ControlSource B", |
| "The control source for the blue color component", |
| GST_TYPE_CONTROL_SOURCE, |
| G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS); |
| |
| g_object_class_install_properties (gobject_class, PROP_LAST, properties); |
| } |
| |
| static void |
| gst_argb_control_binding_init (GstARGBControlBinding * self) |
| { |
| } |
| |
| static GObject * |
| gst_argb_control_binding_constructor (GType type, guint n_construct_params, |
| GObjectConstructParam * construct_params) |
| { |
| GstARGBControlBinding *self; |
| |
| self = |
| GST_ARGB_CONTROL_BINDING (G_OBJECT_CLASS (parent_class)->constructor |
| (type, n_construct_params, construct_params)); |
| |
| if (GST_CONTROL_BINDING_PSPEC (self)) { |
| if (!(G_PARAM_SPEC_VALUE_TYPE (GST_CONTROL_BINDING_PSPEC (self)) == |
| G_TYPE_UINT)) { |
| GST_WARNING ("can't bind to paramspec type '%s'", |
| G_PARAM_SPEC_TYPE_NAME (GST_CONTROL_BINDING_PSPEC (self))); |
| GST_CONTROL_BINDING_PSPEC (self) = NULL; |
| } else { |
| g_value_init (&self->cur_value, G_TYPE_UINT); |
| } |
| } |
| return (GObject *) self; |
| } |
| |
| static void |
| gst_argb_control_binding_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (object); |
| |
| switch (prop_id) { |
| case PROP_CS_A: |
| gst_object_replace ((GstObject **) & self->cs_a, |
| g_value_dup_object (value)); |
| break; |
| case PROP_CS_R: |
| gst_object_replace ((GstObject **) & self->cs_r, |
| g_value_dup_object (value)); |
| break; |
| case PROP_CS_G: |
| gst_object_replace ((GstObject **) & self->cs_g, |
| g_value_dup_object (value)); |
| break; |
| case PROP_CS_B: |
| gst_object_replace ((GstObject **) & self->cs_b, |
| g_value_dup_object (value)); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_argb_control_binding_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (object); |
| |
| switch (prop_id) { |
| case PROP_CS_A: |
| g_value_set_object (value, self->cs_a); |
| break; |
| case PROP_CS_R: |
| g_value_set_object (value, self->cs_r); |
| break; |
| case PROP_CS_G: |
| g_value_set_object (value, self->cs_g); |
| break; |
| case PROP_CS_B: |
| g_value_set_object (value, self->cs_b); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_argb_control_binding_dispose (GObject * object) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (object); |
| |
| gst_object_replace ((GstObject **) & self->cs_a, NULL); |
| gst_object_replace ((GstObject **) & self->cs_r, NULL); |
| gst_object_replace ((GstObject **) & self->cs_g, NULL); |
| gst_object_replace ((GstObject **) & self->cs_b, NULL); |
| |
| G_OBJECT_CLASS (parent_class)->dispose (object); |
| } |
| |
| static void |
| gst_argb_control_binding_finalize (GObject * object) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (object); |
| |
| g_value_unset (&self->cur_value); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (object); |
| } |
| |
| static gboolean |
| gst_argb_control_binding_sync_values (GstControlBinding * _self, |
| GstObject * object, GstClockTime timestamp, GstClockTime last_sync) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (_self); |
| gdouble src_val_a = 1.0, src_val_r = 0.0, src_val_g = 0.0, src_val_b = 0.0; |
| gboolean ret = TRUE; |
| |
| g_return_val_if_fail (GST_IS_ARGB_CONTROL_BINDING (self), FALSE); |
| g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE); |
| |
| GST_LOG_OBJECT (object, "property '%s' at ts=%" GST_TIME_FORMAT, |
| _self->name, GST_TIME_ARGS (timestamp)); |
| |
| if (self->cs_a) |
| ret &= gst_control_source_get_value (self->cs_a, timestamp, &src_val_a); |
| if (self->cs_r) |
| ret &= gst_control_source_get_value (self->cs_r, timestamp, &src_val_r); |
| if (self->cs_g) |
| ret &= gst_control_source_get_value (self->cs_g, timestamp, &src_val_g); |
| if (self->cs_b) |
| ret &= gst_control_source_get_value (self->cs_b, timestamp, &src_val_b); |
| if (G_LIKELY (ret)) { |
| guint src_val = (((guint) (CLAMP (src_val_a, 0.0, 1.0) * 255)) << 24) | |
| (((guint) (CLAMP (src_val_r, 0.0, 1.0) * 255)) << 16) | |
| (((guint) (CLAMP (src_val_g, 0.0, 1.0) * 255)) << 8) | |
| ((guint) (CLAMP (src_val_b, 0.0, 1.0) * 255)); |
| GST_LOG_OBJECT (object, " new value 0x%08x", src_val); |
| /* always set the value for first time, but then only if it changed |
| * this should limit g_object_notify invocations. |
| * FIXME: can we detect negative playback rates? |
| */ |
| if ((timestamp < last_sync) || (src_val != self->last_value)) { |
| GValue *dst_val = &self->cur_value; |
| |
| g_value_set_uint (dst_val, src_val); |
| /* we can make this faster |
| * http://bugzilla.gnome.org/show_bug.cgi?id=536939 |
| */ |
| g_object_set_property ((GObject *) object, _self->name, dst_val); |
| self->last_value = src_val; |
| } |
| } else { |
| GST_DEBUG_OBJECT (object, "no control value for param %s", _self->name); |
| } |
| return (ret); |
| } |
| |
| static GValue * |
| gst_argb_control_binding_get_value (GstControlBinding * _self, |
| GstClockTime timestamp) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (_self); |
| GValue *dst_val = NULL; |
| gdouble src_val_a = 1.0, src_val_r = 0.0, src_val_g = 0.0, src_val_b = 0.0; |
| gboolean ret = TRUE; |
| |
| g_return_val_if_fail (GST_IS_ARGB_CONTROL_BINDING (self), NULL); |
| g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), NULL); |
| g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE); |
| |
| /* get current value via control source */ |
| if (self->cs_a) |
| ret &= gst_control_source_get_value (self->cs_a, timestamp, &src_val_a); |
| if (self->cs_r) |
| ret &= gst_control_source_get_value (self->cs_r, timestamp, &src_val_r); |
| if (self->cs_g) |
| ret &= gst_control_source_get_value (self->cs_g, timestamp, &src_val_g); |
| if (self->cs_b) |
| ret &= gst_control_source_get_value (self->cs_b, timestamp, &src_val_b); |
| if (G_LIKELY (ret)) { |
| guint src_val = (((guint) (CLAMP (src_val_a, 0.0, 1.0) * 255)) << 24) | |
| (((guint) (CLAMP (src_val_r, 0.0, 1.0) * 255)) << 16) | |
| (((guint) (CLAMP (src_val_g, 0.0, 1.0) * 255)) << 8) | |
| ((guint) (CLAMP (src_val_b, 0.0, 1.0) * 255)); |
| dst_val = g_new0 (GValue, 1); |
| g_value_init (dst_val, G_TYPE_UINT); |
| g_value_set_uint (dst_val, src_val); |
| } else { |
| GST_LOG ("no control value for property %s at ts %" GST_TIME_FORMAT, |
| _self->name, GST_TIME_ARGS (timestamp)); |
| } |
| |
| return dst_val; |
| } |
| |
| static gboolean |
| gst_argb_control_binding_get_value_array (GstControlBinding * _self, |
| GstClockTime timestamp, GstClockTime interval, guint n_values, |
| gpointer values_) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (_self); |
| gint i; |
| gdouble *src_val_a = NULL, *src_val_r = NULL, *src_val_g = NULL, *src_val_b = |
| NULL; |
| guint *values = (guint *) values_; |
| gboolean ret = TRUE; |
| |
| g_return_val_if_fail (GST_IS_ARGB_CONTROL_BINDING (self), FALSE); |
| g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE); |
| g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE); |
| g_return_val_if_fail (values, FALSE); |
| g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE); |
| |
| if (self->cs_a) { |
| src_val_a = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_a, timestamp, |
| interval, n_values, src_val_a); |
| } |
| if (self->cs_r) { |
| src_val_r = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_r, timestamp, |
| interval, n_values, src_val_r); |
| } |
| if (self->cs_g) { |
| src_val_g = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_g, timestamp, |
| interval, n_values, src_val_g); |
| } |
| if (self->cs_b) { |
| src_val_b = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_b, timestamp, |
| interval, n_values, src_val_b); |
| } |
| if (G_LIKELY (ret)) { |
| for (i = 0; i < n_values; i++) { |
| gdouble a = 1.0, r = 0.0, g = 0.0, b = 0.0; |
| if (src_val_a && !isnan (src_val_a[i])) |
| a = src_val_a[i]; |
| if (src_val_r && !isnan (src_val_r[i])) |
| r = src_val_r[i]; |
| if (src_val_g && !isnan (src_val_g[i])) |
| g = src_val_g[i]; |
| if (src_val_b && !isnan (src_val_b[i])) |
| b = src_val_b[i]; |
| values[i] = (((guint) (CLAMP (a, 0.0, 1.0) * 255)) << 24) | |
| (((guint) (CLAMP (r, 0.0, 1.0) * 255)) << 16) | |
| (((guint) (CLAMP (g, 0.0, 1.0) * 255)) << 8) | |
| ((guint) (CLAMP (b, 0.0, 1.0) * 255)); |
| } |
| } 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_a); |
| g_free (src_val_r); |
| g_free (src_val_g); |
| g_free (src_val_b); |
| return ret; |
| } |
| |
| static gboolean |
| gst_argb_control_binding_get_g_value_array (GstControlBinding * _self, |
| GstClockTime timestamp, GstClockTime interval, guint n_values, |
| GValue * values) |
| { |
| GstARGBControlBinding *self = GST_ARGB_CONTROL_BINDING (_self); |
| gint i; |
| gdouble *src_val_a = NULL, *src_val_r = NULL, *src_val_g = NULL, *src_val_b = |
| NULL; |
| guint src_val; |
| gboolean ret = TRUE; |
| |
| g_return_val_if_fail (GST_IS_ARGB_CONTROL_BINDING (self), FALSE); |
| g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE); |
| g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE); |
| g_return_val_if_fail (values, FALSE); |
| g_return_val_if_fail (GST_CONTROL_BINDING_PSPEC (self), FALSE); |
| |
| if (self->cs_a) { |
| src_val_a = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_a, timestamp, |
| interval, n_values, src_val_a); |
| } |
| if (self->cs_r) { |
| src_val_r = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_r, timestamp, |
| interval, n_values, src_val_r); |
| } |
| if (self->cs_g) { |
| src_val_g = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_g, timestamp, |
| interval, n_values, src_val_g); |
| } |
| if (self->cs_b) { |
| src_val_b = g_new0 (gdouble, n_values); |
| ret &= gst_control_source_get_value_array (self->cs_b, timestamp, |
| interval, n_values, src_val_b); |
| } |
| if (G_LIKELY (ret)) { |
| for (i = 0; i < n_values; i++) { |
| gdouble a = 1.0, r = 0.0, g = 0.0, b = 0.0; |
| if (src_val_a && !isnan (src_val_a[i])) |
| a = src_val_a[i]; |
| if (src_val_r && !isnan (src_val_r[i])) |
| r = src_val_r[i]; |
| if (src_val_g && !isnan (src_val_g[i])) |
| g = src_val_g[i]; |
| if (src_val_b && !isnan (src_val_b[i])) |
| b = src_val_b[i]; |
| src_val = (((guint) (CLAMP (a, 0.0, 1.0) * 255)) << 24) | |
| (((guint) (CLAMP (r, 0.0, 1.0) * 255)) << 16) | |
| (((guint) (CLAMP (g, 0.0, 1.0) * 255)) << 8) | |
| ((guint) (CLAMP (b, 0.0, 1.0) * 255)); |
| g_value_init (&values[i], G_TYPE_UINT); |
| g_value_set_uint (&values[i], src_val); |
| } |
| } 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_a); |
| g_free (src_val_r); |
| g_free (src_val_g); |
| g_free (src_val_b); |
| return ret; |
| } |
| |
| /* functions */ |
| |
| /** |
| * gst_argb_control_binding_new: |
| * @object: the object of the property |
| * @property_name: the property-name to attach the control source |
| * @cs_a: the control source for the alpha channel |
| * @cs_r: the control source for the red channel |
| * @cs_g: the control source for the green channel |
| * @cs_b: the control source for the blue channel |
| * |
| * Create a new control-binding that attaches the given #GstControlSource to the |
| * #GObject property. |
| * |
| * Returns: (transfer floating): the new #GstARGBControlBinding |
| */ |
| GstControlBinding * |
| gst_argb_control_binding_new (GstObject * object, const gchar * property_name, |
| GstControlSource * cs_a, GstControlSource * cs_r, GstControlSource * cs_g, |
| GstControlSource * cs_b) |
| { |
| return (GstControlBinding *) g_object_new (GST_TYPE_ARGB_CONTROL_BINDING, |
| "object", object, "name", property_name, |
| "control-source-a", cs_a, |
| "control-source-r", cs_r, |
| "control-source-g", cs_g, "control-source-b", cs_b, NULL); |
| } |
| |
| /* functions */ |