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512 lines
15 KiB
C
512 lines
15 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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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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/**
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* SECTION:ges-timeline-title-source
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* @short_description: Render stand-alone titles in GESTimelineLayer.
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*
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* Renders the given text in the specified font, at specified position, and
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* with the specified background pattern.
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*
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* Note: creates a silent #GESTrackAudioTestSource to fill audio tracks
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*/
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#include "ges-internal.h"
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#include "ges-timeline-title-source.h"
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#include "ges-timeline-source.h"
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#include "ges-track-object.h"
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#include "ges-track-title-source.h"
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#include "ges-track-audio-test-source.h"
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#include <string.h>
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G_DEFINE_TYPE (GESTimelineTitleSource, ges_timeline_title_source,
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GES_TYPE_TIMELINE_SOURCE);
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#define DEFAULT_TEXT ""
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#define DEFAULT_FONT_DESC "Serif 36"
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#define GES_TIMELINE_TITLE_SOURCE_VALIGN_TYPE (ges_timeline_title_source_valign_get_type())
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#define GES_TIMELINE_TITLE_SOURCE_HALIGN_TYPE (ges_timeline_title_source_halign_get_type())
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struct _GESTimelineTitleSourcePrivate
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{
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gboolean mute;
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gchar *text;
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gchar *font_desc;
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GESTextVAlign halign;
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GESTextHAlign valign;
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};
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enum
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{
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PROP_0,
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PROP_MUTE,
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PROP_TEXT,
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PROP_FONT_DESC,
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PROP_HALIGNMENT,
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PROP_VALIGNMENT,
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};
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static GESTrackObject
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* ges_timeline_title_source_create_track_object (GESTimelineObject * obj,
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GESTrack * track);
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static void
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ges_timeline_title_source_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESTimelineTitleSourcePrivate *priv =
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GES_TIMELINE_TITLE_SOURCE (object)->priv;
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switch (property_id) {
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case PROP_MUTE:
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g_value_set_boolean (value, priv->mute);
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break;
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case PROP_TEXT:
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g_value_set_string (value, priv->text);
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break;
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case PROP_FONT_DESC:
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g_value_set_string (value, priv->font_desc);
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break;
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case PROP_HALIGNMENT:
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g_value_set_enum (value, priv->halign);
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break;
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case PROP_VALIGNMENT:
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g_value_set_enum (value, priv->valign);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_timeline_title_source_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GESTimelineTitleSource *tfs = GES_TIMELINE_TITLE_SOURCE (object);
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switch (property_id) {
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case PROP_MUTE:
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ges_timeline_title_source_set_mute (tfs, g_value_get_boolean (value));
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break;
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case PROP_TEXT:
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ges_timeline_title_source_set_text (tfs, g_value_get_string (value));
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break;
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case PROP_FONT_DESC:
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ges_timeline_title_source_set_font_desc (tfs, g_value_get_string (value));
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break;
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case PROP_HALIGNMENT:
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ges_timeline_title_source_set_halignment (tfs, g_value_get_enum (value));
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break;
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case PROP_VALIGNMENT:
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ges_timeline_title_source_set_valignment (tfs, g_value_get_enum (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_timeline_title_source_dispose (GObject * object)
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{
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GESTimelineTitleSource *self = GES_TIMELINE_TITLE_SOURCE (object);
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if (self->priv->text)
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g_free (self->priv->text);
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if (self->priv->font_desc)
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g_free (self->priv->font_desc);
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G_OBJECT_CLASS (ges_timeline_title_source_parent_class)->dispose (object);
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}
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static void
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ges_timeline_title_source_class_init (GESTimelineTitleSourceClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GESTimelineObjectClass *timobj_class = GES_TIMELINE_OBJECT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (GESTimelineTitleSourcePrivate));
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object_class->get_property = ges_timeline_title_source_get_property;
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object_class->set_property = ges_timeline_title_source_set_property;
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object_class->dispose = ges_timeline_title_source_dispose;
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/**
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* GESTimelineTitleSource:text:
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*
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* The text to diplay
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*/
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g_object_class_install_property (object_class, PROP_TEXT,
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g_param_spec_string ("text", "Text", "The text to display",
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DEFAULT_TEXT, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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/**
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* GESTimelineTitleSource:font-desc:
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*
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* Pango font description string
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FONT_DESC,
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g_param_spec_string ("font-desc", "font description",
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"Pango font description of font to be used for rendering. "
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"See documentation of pango_font_description_from_string "
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"for syntax.", DEFAULT_FONT_DESC,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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/**
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* GESTimelineTitleSource:valignment:
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*
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* Vertical alignent of the text
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
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g_param_spec_enum ("valignment", "vertical alignment",
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"Vertical alignment of the text", GES_TEXT_VALIGN_TYPE,
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DEFAULT_VALIGNMENT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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/**
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* GESTimelineTitleSource:halignment:
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*
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* Horizontal alignment of the text
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*/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HALIGNMENT,
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g_param_spec_enum ("halignment", "horizontal alignment",
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"Horizontal alignment of the text",
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GES_TEXT_HALIGN_TYPE, DEFAULT_HALIGNMENT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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/**
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* GESTimelineTitleSource:mute:
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*
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* Whether the sound will be played or not.
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*/
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g_object_class_install_property (object_class, PROP_MUTE,
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g_param_spec_boolean ("mute", "Mute", "Mute audio track",
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FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
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timobj_class->create_track_object =
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ges_timeline_title_source_create_track_object;
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timobj_class->need_fill_track = FALSE;
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}
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static void
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ges_timeline_title_source_init (GESTimelineTitleSource * self)
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{
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
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GES_TYPE_TIMELINE_TITLE_SOURCE, GESTimelineTitleSourcePrivate);
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GES_TIMELINE_OBJECT (self)->duration = 0;
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/* Not 100% required since a new gobject's content will always be memzero'd */
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self->priv->mute = FALSE;
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self->priv->text = NULL;
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self->priv->font_desc = NULL;
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self->priv->halign = DEFAULT_HALIGNMENT;
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self->priv->valign = DEFAULT_VALIGNMENT;
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}
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/**
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* ges_timeline_title_source_set_text:
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* @self: the #GESTimelineTitleSource* to set text on
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* @text: the text to render. an internal copy of this text will be
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* made.
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*
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* Sets the text this timeline object will render.
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*
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*/
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void
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ges_timeline_title_source_set_text (GESTimelineTitleSource * self,
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const gchar * text)
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{
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GList *tmp, *trackobjects;
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GESTimelineObject *object = (GESTimelineObject *) self;
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GST_DEBUG ("self:%p, text:%s", self, text);
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if (self->priv->text)
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g_free (self->priv->text);
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self->priv->text = g_strdup (text);
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/* FIXME : We need a much less crack way to find the trackobject to change */
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trackobjects = ges_timeline_object_get_track_objects (object);
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for (tmp = trackobjects; tmp; tmp = tmp->next) {
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GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
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if (GES_IS_TRACK_TITLE_SOURCE (trackobject))
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ges_track_title_source_set_text (GES_TRACK_TITLE_SOURCE
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(trackobject), self->priv->text);
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g_object_unref (GES_TRACK_OBJECT (tmp->data));
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}
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g_list_free (trackobjects);
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}
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/**
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* ges_timeline_title_source_set_font_desc:
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* @self: the #GESTimelineTitleSource*
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* @font_desc: the pango font description
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*
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* Sets the pango font description of the text.
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*
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*/
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void
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ges_timeline_title_source_set_font_desc (GESTimelineTitleSource * self,
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const gchar * font_desc)
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{
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GList *tmp, *trackobjects;
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GESTimelineObject *object = (GESTimelineObject *) self;
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GST_DEBUG ("self:%p, font_desc:%s", self, font_desc);
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if (self->priv->font_desc)
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g_free (self->priv->font_desc);
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self->priv->font_desc = g_strdup (font_desc);
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/* FIXME : We need a much less crack way to find the trackobject to change */
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trackobjects = ges_timeline_object_get_track_objects (object);
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for (tmp = trackobjects; tmp; tmp = tmp->next) {
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GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
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if (GES_IS_TRACK_TITLE_SOURCE (trackobject))
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ges_track_title_source_set_font_desc (GES_TRACK_TITLE_SOURCE
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(trackobject), self->priv->font_desc);
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g_object_unref (GES_TRACK_OBJECT (tmp->data));
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}
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g_list_free (trackobjects);
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}
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/**
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* ges_timeline_title_source_set_halignment:
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* @self: the #GESTimelineTitleSource* to set horizontal alignement of text on
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* @halign: #GESTextHAlign
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*
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* Sets the horizontal aligment of the text.
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*
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*/
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void
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ges_timeline_title_source_set_halignment (GESTimelineTitleSource * self,
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GESTextHAlign halign)
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{
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GList *tmp, *trackobjects;
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GESTimelineObject *object = (GESTimelineObject *) self;
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GST_DEBUG ("self:%p, halign:%d", self, halign);
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self->priv->halign = halign;
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/* FIXME : We need a much less crack way to find the trackobject to change */
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trackobjects = ges_timeline_object_get_track_objects (object);
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for (tmp = trackobjects; tmp; tmp = tmp->next) {
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GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
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if (GES_IS_TRACK_TITLE_SOURCE (trackobject))
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ges_track_title_source_set_halignment (GES_TRACK_TITLE_SOURCE
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(trackobject), self->priv->halign);
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g_object_unref (GES_TRACK_OBJECT (tmp->data));
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}
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g_list_free (trackobjects);
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}
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/**
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* ges_timeline_title_source_set_valignment:
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* @self: the #GESTimelineTitleSource* to set vertical alignement of text on
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* @valign: #GESTextVAlign
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*
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* Sets the vertical aligment of the text.
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*
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*/
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void
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ges_timeline_title_source_set_valignment (GESTimelineTitleSource * self,
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GESTextVAlign valign)
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{
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GList *tmp, *trackobjects;
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GESTimelineObject *object = (GESTimelineObject *) self;
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GST_DEBUG ("self:%p, valign:%d", self, valign);
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self->priv->valign = valign;
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/* FIXME : We need a much less crack way to find the trackobject to change */
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trackobjects = ges_timeline_object_get_track_objects (object);
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for (tmp = trackobjects; tmp; tmp = tmp->next) {
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GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
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if (GES_IS_TRACK_TITLE_SOURCE (trackobject))
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ges_track_title_source_set_valignment (GES_TRACK_TITLE_SOURCE
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(trackobject), self->priv->valign);
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g_object_unref (GES_TRACK_OBJECT (tmp->data));
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}
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g_list_free (trackobjects);
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}
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/**
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* ges_timeline_title_source_set_mute:
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* @self: the #GESTimelineTitleSource on which to mute or unmute the audio track
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* @mute: %TRUE to mute the audio track, %FALSE to unmute it
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*
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* Sets whether the audio track of this timeline object is muted or not
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*
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*/
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void
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ges_timeline_title_source_set_mute (GESTimelineTitleSource * self,
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gboolean mute)
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{
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GList *tmp, *trackobjects;
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GESTimelineObject *object = (GESTimelineObject *) self;
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GST_DEBUG ("self:%p, mute:%d", self, mute);
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self->priv->mute = mute;
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/* Go over tracked objects, and update 'active' status on all audio objects */
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/* FIXME : We need a much less crack way to find the trackobject to change */
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trackobjects = ges_timeline_object_get_track_objects (object);
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for (tmp = trackobjects; tmp; tmp = tmp->next) {
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GESTrackObject *trackobject = (GESTrackObject *) tmp->data;
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if (ges_track_object_get_track (trackobject)->type == GES_TRACK_TYPE_AUDIO)
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ges_track_object_set_active (trackobject, !mute);
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g_object_unref (GES_TRACK_OBJECT (tmp->data));
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}
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g_list_free (trackobjects);
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}
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/**
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* ges_timeline_title_source_get_text:
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* @self: a #GESTimelineTitleSource
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*
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* Get the text currently set on @self.
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*
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* Returns: The text currently set on @self.
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*
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*/
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const gchar *
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ges_timeline_title_source_get_text (GESTimelineTitleSource * self)
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{
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return self->priv->text;
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}
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/**
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* ges_timeline_title_source_get_font_desc:
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* @self: a #GESTimelineTitleSource
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*
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* Get the pango font description used by @self.
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*
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* Returns: The pango font description used by @self.
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*
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*/
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const char *
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ges_timeline_title_source_get_font_desc (GESTimelineTitleSource * self)
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{
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return self->priv->font_desc;
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}
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/**
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* ges_timeline_title_source_get_halignment:
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* @self: a #GESTimelineTitleSource
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*
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* Get the horizontal aligment used by @self.
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*
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* Returns: The horizontal aligment used by @self.
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*
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*/
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GESTextHAlign
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ges_timeline_title_source_get_halignment (GESTimelineTitleSource * self)
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{
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return self->priv->halign;
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}
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/**
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* ges_timeline_title_source_get_valignment:
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* @self: a #GESTimelineTitleSource
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*
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* Get the vertical aligment used by @self.
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*
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* Returns: The vertical aligment used by @self.
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*
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*/
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GESTextVAlign
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ges_timeline_title_source_get_valignment (GESTimelineTitleSource * self)
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{
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return self->priv->valign;
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}
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/**
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* ges_timeline_title_source_is_muted:
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* @self: a #GESTimelineTitleSource
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*
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* Let you know if the audio track of @self is muted or not.
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*
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* Returns: Whether the audio track of @self is muted or not.
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*
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*/
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gboolean
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ges_timeline_title_source_is_muted (GESTimelineTitleSource * self)
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{
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return self->priv->mute;
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}
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static GESTrackObject *
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ges_timeline_title_source_create_track_object (GESTimelineObject * obj,
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GESTrack * track)
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{
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GESTimelineTitleSourcePrivate *priv = GES_TIMELINE_TITLE_SOURCE (obj)->priv;
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GESTrackObject *res = NULL;
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GST_DEBUG ("Creating a GESTrackTitleSource");
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if (track->type == GES_TRACK_TYPE_VIDEO) {
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res = (GESTrackObject *) ges_track_title_source_new ();
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GST_DEBUG ("Setting text property");
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ges_track_title_source_set_text ((GESTrackTitleSource *) res, priv->text);
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ges_track_title_source_set_font_desc ((GESTrackTitleSource *) res,
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priv->font_desc);
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ges_track_title_source_set_halignment ((GESTrackTitleSource *) res,
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priv->halign);
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ges_track_title_source_set_valignment ((GESTrackTitleSource *) res,
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priv->valign);
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}
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else if (track->type == GES_TRACK_TYPE_AUDIO) {
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res = (GESTrackObject *) ges_track_audio_test_source_new ();
|
|
if (priv->mute)
|
|
ges_track_object_set_active (res, FALSE);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* ges_timeline_title_source_new:
|
|
*
|
|
* Creates a new #GESTimelineTitleSource
|
|
*
|
|
* Returns: The newly created #GESTimelineTitleSource, or NULL if there was an
|
|
* error.
|
|
*/
|
|
GESTimelineTitleSource *
|
|
ges_timeline_title_source_new (void)
|
|
{
|
|
/* FIXME : Check for validity/existence of URI */
|
|
return g_object_new (GES_TYPE_TIMELINE_TITLE_SOURCE, NULL);
|
|
}
|