/* Gstreamer Editing Services * * Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com> * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION: gesclipasset * @title: GESClipAsset * @short_description: A GESAsset subclass specialized in GESClip extraction * * The #GESUriClipAsset is a special #GESAsset specilized in #GESClip. * it is mostly used to get information about the #GESTrackType-s the objects extracted * from it can potentialy create #GESTrackElement for. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "ges-clip-asset.h" #include "ges-source-clip.h" #include "ges-internal.h" #define GES_CLIP_ASSET_GET_PRIVATE(o)\ (G_TYPE_INSTANCE_GET_PRIVATE ((o), GES_TYPE_CLIP_ASSET, \ GESClipAssetPrivate)) #define parent_class ges_clip_asset_parent_class struct _GESClipAssetPrivate { GESTrackType supportedformats; }; enum { PROP_0, PROP_SUPPORTED_FORMATS, PROP_LAST }; static GParamSpec *properties[PROP_LAST]; G_DEFINE_TYPE_WITH_PRIVATE (GESClipAsset, ges_clip_asset, GES_TYPE_ASSET); /*********************************************** * * * GObject vmetods implemenation * * * ***********************************************/ static void _get_property (GObject * object, guint property_id, GValue * value, GParamSpec * pspec) { GESClipAssetPrivate *priv = GES_CLIP_ASSET (object)->priv; switch (property_id) { case PROP_SUPPORTED_FORMATS: g_value_set_flags (value, priv->supportedformats); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); } } static void _set_property (GObject * object, guint property_id, const GValue * value, GParamSpec * pspec) { GESClipAssetPrivate *priv = GES_CLIP_ASSET (object)->priv; switch (property_id) { case PROP_SUPPORTED_FORMATS: priv->supportedformats = g_value_get_flags (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); } } static void ges_clip_asset_init (GESClipAsset * self) { self->priv = ges_clip_asset_get_instance_private (self); } static void _constructed (GObject * object) { GType extractable_type = ges_asset_get_extractable_type (GES_ASSET (object)); GObjectClass *class = g_type_class_ref (extractable_type); GParamSpecFlags *pspec; pspec = G_PARAM_SPEC_FLAGS (g_object_class_find_property (class, "supported-formats")); GES_CLIP_ASSET (object)->priv->supportedformats = pspec->default_value; g_type_class_unref (class); G_OBJECT_CLASS (parent_class)->constructed (object); } static void ges_clip_asset_class_init (GESClipAssetClass * self_class) { GObjectClass *object_class = G_OBJECT_CLASS (self_class); object_class->constructed = _constructed; object_class->get_property = _get_property; object_class->set_property = _set_property; /** * GESClipAsset:supported-formats: * * The formats supported by the asset. */ properties[PROP_SUPPORTED_FORMATS] = g_param_spec_flags ("supported-formats", "Supported formats", "Formats supported by the file", GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO, G_PARAM_READWRITE | G_PARAM_CONSTRUCT); g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS, properties[PROP_SUPPORTED_FORMATS]); } /*********************************************** * * * Public methods * * * ***********************************************/ /** * ges_clip_asset_set_supported_formats: * @self: a #GESClipAsset * @supportedformats: The track types supported by the GESClipAsset * * Sets track types for which objects extracted from @self can create #GESTrackElement */ void ges_clip_asset_set_supported_formats (GESClipAsset * self, GESTrackType supportedformats) { g_return_if_fail (GES_IS_CLIP_ASSET (self)); self->priv->supportedformats = supportedformats; } /** * ges_clip_asset_get_supported_formats: * @self: a #GESClipAsset * * Gets track types for which objects extracted from @self can create #GESTrackElement * * Returns: The track types on which @self will create TrackElement when added to * a layer */ GESTrackType ges_clip_asset_get_supported_formats (GESClipAsset * self) { g_return_val_if_fail (GES_IS_CLIP_ASSET (self), GES_TRACK_TYPE_UNKNOWN); return self->priv->supportedformats; } /** * ges_clip_asset_get_natural_framerate: * @self: The object from which to retrieve the natural framerate * @framerate_n: (out): The framerate numerator * @framerate_d: (out): The framerate denominator * * Result: %TRUE if @self has a natural framerate %FALSE otherwise * * Since: 1.18 */ gboolean ges_clip_asset_get_natural_framerate (GESClipAsset * self, gint * framerate_n, gint * framerate_d) { GESClipAssetClass *klass; g_return_val_if_fail (GES_IS_CLIP_ASSET (self), FALSE); g_return_val_if_fail (framerate_n && framerate_d, FALSE); klass = GES_CLIP_ASSET_GET_CLASS (self); *framerate_n = 0; *framerate_d = -1; if (klass->get_natural_framerate) return klass->get_natural_framerate (self, framerate_n, framerate_d); return FALSE; } /** * ges_clip_asset_get_frame_time: * @self: The object for which to compute timestamp for specifed frame * @frame_number: The frame number we want the internal time coordinate timestamp of * * Converts the given frame number into a timestamp, using the "natural" frame * rate of the asset. * * You can use this to reference a specific frame in a media file and use this * as, for example, the `in-point` or `max-duration` of a #GESClip. * * Returns: The timestamp corresponding to @frame_number in the element source, given * in internal time coordinates, or #GST_CLOCK_TIME_NONE if the clip asset does not have a * natural frame rate. * * Since: 1.18 */ GstClockTime ges_clip_asset_get_frame_time (GESClipAsset * self, GESFrameNumber frame_number) { gint fps_n, fps_d; g_return_val_if_fail (GES_IS_CLIP_ASSET (self), GST_CLOCK_TIME_NONE); g_return_val_if_fail (GES_FRAME_NUMBER_IS_VALID (frame_number), GST_CLOCK_TIME_NONE); if (!ges_clip_asset_get_natural_framerate (self, &fps_n, &fps_d)) return GST_CLOCK_TIME_NONE; return gst_util_uint64_scale_ceil (frame_number, fps_d * GST_SECOND, fps_n); }