mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-05 09:00:54 +00:00
238 lines
7 KiB
C
238 lines
7 KiB
C
/* 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);
|
|
}
|