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project: Implement GESProject

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Co-Authored-By: Volodymyr Rudyi <vladimir.rudoy@gmail.com>
This commit is contained in:
Thibault Saunier 2012-09-02 15:14:27 +03:00
parent 571e9c63d8
commit 49867a95fc
7 changed files with 1016 additions and 0 deletions
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1
docs/libs/ges-docs.sgml
View file

@ -100,6 +100,7 @@ platform as well as Windows. It is released under the GNU Library General Public
<chapter>
<title>Assets</title>
<xi:include href="xml/ges-asset-file-source.xml"/>
<xi:include href="xml/ges-project.xml"/>
</chapter>
<chapter id="ges-hierarchy">

29
docs/libs/ges-sections.txt
View file

@ -278,6 +278,7 @@ ges_timeline_get_tracks
ges_timeline_get_layers
ges_timeline_get_track_for_pad
ges_timeline_get_duration
ges_timeline_get_project
<SUBSECTION Standard>
GESTimelinePrivate
GESTimelineClass
@ -988,3 +989,31 @@ GES_IS_ASSET_FILESOURCE
GES_IS_ASSET_FILESOURCE_CLASS
GES_ASSET_FILESOURCE_GET_CLASS
</SECTION>
<SECTION>
<FILE>ges-project</FILE>
<TITLE>GESProject</TITLE>
GESProject
ges_project_add_asset
ges_project_remove_asset
ges_project_list_assets
ges_project_get_asset
ges_project_save
ges_project_create_asset
ges_project_get_type
ges_project_get_uri
ges_project_new
ges_project_add_encoding_profile
ges_project_list_encoding_profiles
GESProjectFindNewUriFunction
<SUBSECTION Standard>
GESProjectPrivate
GES_PROJECT
GES_PROJECT_CLASS
GES_IS_PROJECT
GES_IS_PROJECT_CLASS
GES_PROJECT_GET_CLASS
GES_TYPE_PROJECT
</SECTION>
</SECTION>

9
ges/ges-internal.h
View file

@ -102,4 +102,13 @@ GType
ges_extractable_get_real_extractable_type_for_id (GType type, const gchar * id);
gboolean ges_extractable_register_metas (GType extractable_type, GESAsset *asset);
#if 0
/* GESProject internal methods */
gboolean ges_project_set_loaded (GESProject * project,
GESFormatter *formatter);
gchar * ges_project_try_updating_id (GESProject *self,
GESAsset *asset,
GError *error);
#endif
#endif /* __GES_INTERNAL_H__ */

867
ges/ges-project.c Normal file
View file

@ -0,0 +1,867 @@
/* GStreamer Editing Services
*
* Copyright (C) <2012> 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: ges-project
* @short_description: A #GESAsset that is used to manage projects
*
* The #GESProject is used to control a set of #GESAsset and is a
* #GESAsset with #GES_TYPE_TIMELINE as @extractable_type itself. That
* means that you can extract #GESTimeline from a project as followed:
*
* |[
* GESProject *project;
* GESTimeline *timeline;
*
* project = ges_project_new ("file:///path/to/a/valid/project/uri");
*
* // Here you can connect to the various signal to get more infos about
* // what is happening and recover from errors if possible
* ...
*
* timeline = ges_asset_extract (GES_ASSET (project));
* ]|
*
* The #GESProject class offers a higher level API to handle #GESAsset-s.
* It lets you request new asset, and it informs you about new assets through
* a set of signals. Also it handles problem such as missing files/missing
* #GstElement and lets you try to recover from those.
*/
#include "ges.h"
#include "ges-internal.h"
/* TODO We should rely on both extractable_type and @id to identify
* a Asset, not only @id
*/
G_DEFINE_TYPE (GESProject, ges_project, GES_TYPE_ASSET);
struct _GESProjectPrivate
{
GHashTable *assets;
GESAsset *formatter_asset;
GList *formatters;
gchar *uri;
GList *encoding_profiles;
};
typedef struct EmitLoadedInIdle
{
GESProject *project;
GESTimeline *timeline;
} EmitLoadedInIdle;
enum
{
LOADED_SIGNAL,
ERROR_LOADING_ASSET,
ASSET_ADDED_SIGNAL,
ASSET_REMOVED_SIGNAL,
MISSING_URI_SIGNAL,
LAST_SIGNAL
};
static guint _signals[LAST_SIGNAL] = { 0 };
static guint nb_projects = 0;
enum
{
PROP_0,
PROP_URI,
PROP_LAST,
};
static GParamSpec *_properties[LAST_SIGNAL] = { 0 };
static gboolean
_emit_loaded_in_idle (EmitLoadedInIdle * data)
{
g_signal_emit (data->project, _signals[LOADED_SIGNAL], 0, data->timeline);
gst_object_unref (data->project);
gst_object_unref (data->timeline);
g_slice_free (EmitLoadedInIdle, data);
return FALSE;
}
static void
ges_project_add_formatter (GESProject * project, GESFormatter * formatter)
{
GESProjectPrivate *priv = GES_PROJECT (project)->priv;
ges_formatter_set_project (formatter, project);
priv->formatters = g_list_append (priv->formatters, formatter);
g_object_ref_sink (formatter);
}
static void
ges_project_remove_formatter (GESProject * project, GESFormatter * formatter)
{
GList *tmp;
GESProjectPrivate *priv = GES_PROJECT (project)->priv;
for (tmp = priv->formatters; tmp; tmp = tmp->next) {
if (tmp->data == formatter) {
gst_object_unref (formatter);
priv->formatters = g_list_remove_link (priv->formatters, tmp);
return;
}
}
}
static void
ges_project_set_uri (GESProject * project, const gchar * uri)
{
GESProjectPrivate *priv;
g_return_if_fail (GES_IS_PROJECT (project));
priv = project->priv;
if (priv->uri) {
GST_WARNING_OBJECT (project, "Trying to rest URI, this is prohibited");
return;
}
if (uri == NULL || !gst_uri_is_valid (uri)) {
GST_LOG_OBJECT (project, "Invalid URI: %s", uri);
return;
}
priv->uri = g_strdup (uri);
/* We use that URI as ID */
ges_asset_set_id (GES_ASSET (project), uri);
return;
}
static gboolean
_load_project (GESProject * project, GESTimeline * timeline, GError ** error)
{
GError *lerr = NULL;
GESProjectPrivate *priv;
GESFormatter *formatter;
priv = GES_PROJECT (project)->priv;
if (priv->uri == NULL) {
EmitLoadedInIdle *data = g_slice_new (EmitLoadedInIdle);
GST_LOG_OBJECT (project, "%s, Loading an empty timeline %s"
" as no URI set yet", GST_OBJECT_NAME (timeline),
ges_asset_get_id (GES_ASSET (project)));
data->timeline = gst_object_ref (timeline);
data->project = gst_object_ref (project);
/* Make sure the signal is emitted after the functions ends */
g_idle_add ((GSourceFunc) _emit_loaded_in_idle, data);
return TRUE;
}
if (priv->formatter_asset == NULL)
priv->formatter_asset = _find_formatter_asset_for_uri (priv->uri);
if (priv->formatter_asset == NULL)
goto failed;
formatter = GES_FORMATTER (ges_asset_extract (priv->formatter_asset, &lerr));
if (lerr) {
GST_WARNING_OBJECT (project, "Could not create the formatter: %s",
(*error)->message);
goto failed;
}
ges_project_add_formatter (GES_PROJECT (project), formatter);
ges_formatter_load_from_uri (formatter, timeline, priv->uri, &lerr);
if (lerr) {
GST_WARNING_OBJECT (project, "Could not load the timeline,"
" returning: %s", lerr->message);
goto failed;
}
return TRUE;
failed:
if (lerr)
g_propagate_error (error, lerr);
return FALSE;
}
static gboolean
_uri_missing_accumulator (GSignalInvocationHint * ihint, GValue * return_accu,
const GValue * handler_return, gpointer data)
{
const gchar *ret = g_value_get_string (handler_return);
if (ret && gst_uri_is_valid (ret)) {
g_value_set_string (return_accu, ret);
return FALSE;
}
return TRUE;
}
/* GESAsset vmethod implementation */
static GESExtractable *
ges_project_extract (GESAsset * project, GError ** error)
{
GESTimeline *timeline = ges_timeline_new ();
if (_load_project (GES_PROJECT (project), timeline, error))
return GES_EXTRACTABLE (timeline);
gst_object_unref (timeline);
return NULL;
}
/* GObject vmethod implementation */
static void
_dispose (GObject * object)
{
GList *tmp;
GESProjectPrivate *priv = GES_PROJECT (object)->priv;
if (priv->assets)
g_hash_table_unref (priv->assets);
if (priv->formatter_asset)
gst_object_unref (priv->formatter_asset);
for (tmp = priv->formatters; tmp; tmp = tmp->next)
ges_project_remove_formatter (GES_PROJECT (object), tmp->data);;
G_OBJECT_CLASS (ges_project_parent_class)->dispose (object);
}
static void
_finalize (GObject * object)
{
GESProjectPrivate *priv = GES_PROJECT (object)->priv;
if (priv->uri)
g_free (priv->uri);
}
static void
_get_property (GESProject * project, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESProjectPrivate *priv = project->priv;
switch (property_id) {
case PROP_URI:
g_value_set_string (value, priv->uri);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (project, property_id, pspec);
}
}
static void
_set_property (GESProject * project, guint property_id,
const GValue * value, GParamSpec * pspec)
{
switch (property_id) {
case PROP_URI:
project->priv->uri = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (project, property_id, pspec);
}
}
static void
ges_project_class_init (GESProjectClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESProjectPrivate));
klass->asset_added = NULL;
klass->missing_uri = NULL;
klass->loading_error = NULL;
klass->asset_removed = NULL;
object_class->get_property = (GObjectGetPropertyFunc) _get_property;
object_class->set_property = (GObjectSetPropertyFunc) _set_property;
/**
* GESProject::uri:
*
* The location of the project to use.
*/
_properties[PROP_URI] = g_param_spec_string ("uri", "URI",
"uri of the project", NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, PROP_LAST, _properties);
/**
* GESProject::asset-added:
* @formatter: the #GESProject
* @asset: The #GESAsset that has been added to @project
*/
_signals[ASSET_ADDED_SIGNAL] =
g_signal_new ("asset-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GESProjectClass, asset_added),
NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_ASSET);
/**
* GESProject::asset-removed:
* @formatter: the #GESProject
* @asset: The #GESAsset that has been removed from @project
*/
_signals[ASSET_REMOVED_SIGNAL] =
g_signal_new ("asset-removed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GESProjectClass, asset_removed),
NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 1, GES_TYPE_ASSET);
/**
* GESProject::loaded:
* @project: the #GESProject that is done loading a project.
* @timeline: The #GESTimeline that complete loading
*/
_signals[LOADED_SIGNAL] =
g_signal_new ("loaded", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GESProjectClass, loaded),
NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE,
1, GES_TYPE_TIMELINE);
/**
* GESProject::missing-uri:
* @project: the #GESProject reporting that a file has moved
* @error: The error that happened
* @wrong_asset: The asset with the wrong ID, you should us it and its content
* only to find out what the new location is.
*
* |[
* static gchar
* source_moved_cb (GESProject *project, GError *error, const gchar *old_uri)
* {
* return g_strdup ("file:///the/new/uri.ogg");
* }
*
* static int
* main (int argc, gchar ** argv)
* {
* GESTimeline *timeline;
* GESProject *project = ges_project_new ("file:///some/uri.xges");
*
* g_signal_connect (project, "missing-uri", source_moved_cb, NULL);
* timeline = ges_asset_extract (GES_ASSET (project));
* }
* ]|
*
* Returns: (transfer full) (allow-none): The new URI of @wrong_asset
*/
_signals[MISSING_URI_SIGNAL] =
g_signal_new ("missing-uri", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GESProjectClass, missing_uri),
_uri_missing_accumulator, NULL, g_cclosure_marshal_generic,
G_TYPE_STRING, 2, G_TYPE_ERROR, GES_TYPE_ASSET);
/**
* GESProject::error-loading-asset:
* @project: the #GESProject on which a problem happend when creted a #GESAsset
* @error: The #GError defining the error that accured, might be %NULL
* @id: The @id of the asset that failed loading
* @extractable_type: The @extractable_type of the asset that
* failed loading
*
* Informs you that a #GESAsset could not be created. In case of
* missing GStreamer plugins, the error will be set to #GST_CORE_ERROR
* #GST_CORE_ERROR_MISSING_PLUGIN
*/
_signals[ERROR_LOADING_ASSET] =
g_signal_new ("error-loading-asset", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GESProjectClass, loading_error),
NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 3, G_TYPE_ERROR, G_TYPE_STRING, G_TYPE_GTYPE);
object_class->dispose = _dispose;
object_class->dispose = _finalize;
GES_ASSET_CLASS (klass)->extract = ges_project_extract;
}
static void
ges_project_init (GESProject * project)
{
GESProjectPrivate *priv = project->priv =
G_TYPE_INSTANCE_GET_PRIVATE (project,
GES_TYPE_PROJECT, GESProjectPrivate);
priv->uri = NULL;
priv->formatters = NULL;
priv->formatter_asset = NULL;
priv->encoding_profiles = NULL;
priv->assets = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, gst_object_unref);
}
gchar *
ges_project_try_updating_id (GESProject * project, GESAsset * asset,
GError * error)
{
gchar *new_id = NULL;
g_return_val_if_fail (GES_IS_PROJECT (project), NULL);
g_return_val_if_fail (GES_IS_ASSET (asset), NULL);
g_return_val_if_fail (error, NULL);
GST_DEBUG_OBJECT (project, "Try to proxy %s", ges_asset_get_id (asset));
if (ges_asset_request_id_update (asset, &new_id, error) == FALSE) {
GST_DEBUG_OBJECT (project, "Type: %s can not be proxied for id: %s",
g_type_name (G_OBJECT_TYPE (asset)), ges_asset_get_id (asset));
return NULL;
}
if (new_id == NULL)
g_signal_emit (project, _signals[MISSING_URI_SIGNAL], 0, error, asset,
&new_id);
if (new_id) {
if (ges_asset_set_proxy (asset, new_id))
return new_id;
else
g_free (new_id);
}
return NULL;
}
static void
new_asset_cb (GESAsset * source, GAsyncResult * res, GESProject * project)
{
GError *error = NULL;
gchar *possible_id = NULL;
const gchar *id = ges_asset_get_id (source);
GESAsset *asset = ges_asset_request_finish (res, &error);
if (error) {
possible_id = ges_project_try_updating_id (project, source, error);
if (possible_id == NULL) {
g_signal_emit (project, _signals[ERROR_LOADING_ASSET], 0, error, id,
ges_asset_get_extractable_type (source));
return;
}
ges_asset_request_async (ges_asset_get_extractable_type (source),
possible_id, NULL, (GAsyncReadyCallback) new_asset_cb, project);
g_free (possible_id);
return;
}
ges_project_add_asset (project, asset);
if (asset)
gst_object_unref (asset);
}
/**
* ges_project_set_loaded:
* @project: The #GESProject from which to emit the "project-loaded" signal
*
* Emits the "loaded" signal. This method should be called by sublasses when
* the project is fully loaded.
*
* Returns: %TRUE if the signale could be emitted %FALSE otherwize
*/
gboolean
ges_project_set_loaded (GESProject * project, GESFormatter * formatter)
{
GST_INFO_OBJECT (project, "Emit project loaded");
g_signal_emit (project, _signals[LOADED_SIGNAL], 0, formatter->timeline);
/* We are now done with that formatter */
ges_project_remove_formatter (project, formatter);
return TRUE;
}
/**************************************
* *
* API Implementation *
* *
**************************************/
/**
* ges_project_create_asset:
* @project: A #GESProject
* @id: The id of the asset to create and add to @project
* @extractable_type: The #GType of the asset to create
*
* Create and add a #GESAsset to @project. You should connect to the
* "asset-added" signal to get the asset when it finally gets added to
* @project
*
* Returns: %TRUE if the asset started to be added %FALSE it was already
* in the project
*/
gboolean
ges_project_create_asset (GESProject * project, const gchar * id,
GType extractable_type)
{
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
g_return_val_if_fail (g_type_is_a (extractable_type, GES_TYPE_EXTRACTABLE),
FALSE);
if (g_hash_table_lookup (project->priv->assets, id))
return FALSE;
/* TODO Add a GCancellable somewhere in our API */
ges_asset_request_async (extractable_type, id, NULL,
(GAsyncReadyCallback) new_asset_cb, project);
return TRUE;
}
/**
* ges_project_add_asset:
* @project: A #GESProject
* @asset: (transfer none): A #GESAsset to add to @project
*
* Adds a #Asset to @project, the project will keep a reference on
* @asset.
*
* Returns: %TRUE if the asset could be added %FALSE it was already
* in the project
*/
gboolean
ges_project_add_asset (GESProject * project, GESAsset * asset)
{
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
if (g_hash_table_lookup (project->priv->assets, ges_asset_get_id (asset)))
return FALSE;
g_hash_table_insert (project->priv->assets,
g_strdup (ges_asset_get_id (asset)), gst_object_ref (asset));
GST_DEBUG_OBJECT (project, "Asset added: %s", ges_asset_get_id (asset));
g_signal_emit (project, _signals[ASSET_ADDED_SIGNAL], 0, asset);
return TRUE;
}
/**
* ges_project_remove_asset:
* @project: A #GESProject
* @asset: (transfer none): A #GESAsset to remove from @project
*
* remove a @asset to from @project.
*
* Returns: %TRUE if the asset could be removed %FALSE otherwise
*/
gboolean
ges_project_remove_asset (GESProject * project, GESAsset * asset)
{
gboolean ret;
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
ret = g_hash_table_remove (project->priv->assets, ges_asset_get_id (asset));
g_signal_emit (project, _signals[ASSET_REMOVED_SIGNAL], 0, asset);
return ret;
}
/**
* ges_project_get_asset:
* @project: A #GESProject
* @id: The id of the asset to retrieve
* @extractable_type: The extractable_type of the asset
* to retrieve from @object
*
* Returns: (transfer full) (allow-none): The #GESAsset with
* @id or %NULL if no asset with @id as an ID
*/
GESAsset *
ges_project_get_asset (GESProject * project, const gchar * id,
GType extractable_type)
{
GESAsset *asset;
g_return_val_if_fail (GES_IS_PROJECT (project), NULL);
g_return_val_if_fail (g_type_is_a (extractable_type, GES_TYPE_EXTRACTABLE),
NULL);
asset = g_hash_table_lookup (project->priv->assets, id);
if (asset)
return gst_object_ref (asset);
return NULL;
}
/**
* ges_project_list_assets:
* @project: A #GESProject
* @filter: Type of assets to list, #GES_TYPE_EXTRACTABLE will list
* all assets
*
* List all @asset contained in @project filtering per extractable_type
* as defined by @filter. It copies the asset and thus will not be updated
* in time.
*
* Returns: (transfer full) (element-type GESAsset): The list of
* #GESAsset the object contains
*/
GList *
ges_project_list_assets (GESProject * project, GType filter)
{
GList *ret = NULL;
GHashTableIter iter;
gpointer key, value;
g_return_val_if_fail (GES_IS_PROJECT (project), NULL);
g_hash_table_iter_init (&iter, project->priv->assets);
while (g_hash_table_iter_next (&iter, &key, &value)) {
if (g_type_is_a (ges_asset_get_extractable_type (GES_ASSET (value)),
filter))
ret = g_list_append (ret, g_object_ref (value));
}
return ret;
}
/**
* ges_project_save:
* @project: A #GESProject to save
* @timeline: The #GESTimeline to save, it must have been extracted from @project
* @uri: The uri where to save @project and @timeline
* @formatter_asset: (allow-none): The formatter asset to use or %NULL. If %NULL,
* will try to save in the same format as the one from which the timeline as been loaded
* or default to the formatter with highest rank
* @overwrite: %TRUE to overwrite file if it exists
* @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
*
* Save the timeline of @project to @uri. You should make sure that @timeline
* is one of the timelines that have been extracted from @project
* (using ges_asset_extract (@project);)
*
* Returns: %TRUE if the project could be save, %FALSE otherwize
*/
gboolean
ges_project_save (GESProject * project, GESTimeline * timeline,
const gchar * uri, GESAsset * formatter_asset, gboolean overwrite,
GError ** error)
{
GESAsset *tl_asset;
gboolean ret = TRUE;
GESFormatter *formatter = NULL;
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
g_return_val_if_fail (formatter_asset == NULL ||
g_type_is_a (ges_asset_get_extractable_type (formatter_asset),
GES_TYPE_FORMATTER), FALSE);
g_return_val_if_fail ((error == NULL || *error == NULL), FALSE);
tl_asset = ges_extractable_get_asset (GES_EXTRACTABLE (timeline));
if (tl_asset == NULL && project->priv->uri == NULL) {
GESAsset *asset = ges_asset_cache_lookup (GES_TYPE_PROJECT, uri);
if (asset) {
GST_WARNING_OBJECT (project, "Trying to save project to %s but we already"
"have %" GST_PTR_FORMAT " for that uri, can not save", uri, asset);
goto out;
}
GST_DEBUG_OBJECT (project, "Timeline %" GST_PTR_FORMAT " has no asset"
" we have no uri set, so setting ourself as asset", timeline);
ges_extractable_set_asset (GES_EXTRACTABLE (timeline), GES_ASSET (project));
} else if (tl_asset != GES_ASSET (project)) {
GST_WARNING_OBJECT (project, "Timeline %" GST_PTR_FORMAT
" not created by this project can not save", timeline);
ret = FALSE;
goto out;
}
if (formatter_asset == NULL)
formatter_asset = gst_object_ref (ges_formatter_get_default ());
formatter = GES_FORMATTER (ges_asset_extract (formatter_asset, error));
if (formatter == NULL) {
GST_WARNING_OBJECT (project, "Could not create the formatter %s: Error: %s",
formatter_asset, (error && *error) ? (*error)->message : "Unknown");
ret = FALSE;
goto out;
}
ges_project_add_formatter (project, formatter);
ret = ges_formatter_save_to_uri (formatter, timeline, uri, overwrite, error);
if (ret && project->priv->uri == NULL)
ges_project_set_uri (project, uri);
out:
if (formatter_asset)
gst_object_unref (formatter_asset);
ges_project_remove_formatter (project, formatter);
return ret;
}
/**
* ges_project_new:
* @uri: (allow-none): The uri to be set after creating the project.
*
* Creates a new #GESProject and sets its uri to @uri if provided. Note that
* if @uri is not valid or %NULL, the uri of the project will then be set
* the first time you save the project. If you then save the project to
* other locations, it will never be updated again and the first valid URI is
* the URI it will keep refering to.
*
* Returns: A newly created #GESProject
*/
GESProject *
ges_project_new (const gchar * uri)
{
gchar *id = (gchar *) uri;
GESProject *project;
if (uri == NULL)
id = g_strdup_printf ("project-%i", nb_projects++);
project = GES_PROJECT (ges_asset_request (GES_TYPE_TIMELINE, id, NULL));
if (project && uri)
ges_project_set_uri (project, uri);
return project;
}
/**
* ges_project_load:
* @project: A #GESProject that has an @uri set already
* @timeline: A blank timeline to load @project into
* @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
*
* Loads @project into @timeline
*
* Returns: %TRUE if the project could be loaded %FALSE otherwize.
*/
gboolean
ges_project_load (GESProject * project, GESTimeline * timeline, GError ** error)
{
g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
g_return_val_if_fail (ges_project_get_uri (project), FALSE);
g_return_val_if_fail (
(ges_extractable_get_asset (GES_EXTRACTABLE (timeline)) == NULL), FALSE);
if (!_load_project (project, timeline, error))
return FALSE;
ges_extractable_set_asset (GES_EXTRACTABLE (timeline), GES_ASSET (project));
return TRUE;
}
/**
* ges_project_get_uri:
* @project: A #GESProject
*
* Retrieve the uri that is currently set on @project
*
* Returns: The uri that is set on @project
*/
gchar *
ges_project_get_uri (GESProject * project)
{
GESProjectPrivate *priv;
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
priv = project->priv;
if (priv->uri)
return g_strdup (priv->uri);
return NULL;
}
/**
* ges_project_add_encoding_profile:
* @project: A #GESProject
* @profile: A #GstEncodingProfile to add to the project. If a profile with
* the same name already exists, it will be replaced
*
* Adds @profile to the project. It lets you save in what format
* the project has been renders and keep a reference to those formats.
* Also, those formats will be saves to the project file when possible.
*
* Returns: %TRUE if @profile could be added, %FALSE otherwize
*/
gboolean
ges_project_add_encoding_profile (GESProject * project,
GstEncodingProfile * profile)
{
GList *tmp;
GESProjectPrivate *priv;
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
g_return_val_if_fail (GST_IS_ENCODING_PROFILE (profile), FALSE);
priv = project->priv;
for (tmp = priv->encoding_profiles; tmp; tmp = tmp->next) {
GstEncodingProfile *tmpprofile = GST_ENCODING_PROFILE (tmp->data);
if (g_strcmp0 (gst_encoding_profile_get_name (tmpprofile),
gst_encoding_profile_get_name (profile)) == 0) {
GST_INFO_OBJECT (project, "Already have profile: %s, replacing it",
gst_encoding_profile_get_name (profile));
gst_object_unref (tmp->data);
tmp->data = gst_object_ref (profile);
return TRUE;
}
}
priv->encoding_profiles = g_list_prepend (priv->encoding_profiles,
gst_object_ref (profile));
return TRUE;
}
/**
* ges_project_list_encoding_profiles:
* @project: A #GESProject
*
* Lists the encoding profile that have been set to @project. The first one
* is the latest added.
*
* Returns: (transfer none) (element-type GstPbutils.EncodingProfile) (allow-none): The
* list of #GstEncodingProfile used in @project
*/
const GList *
ges_project_list_encoding_profiles (GESProject * project)
{
g_return_val_if_fail (GES_IS_PROJECT (project), FALSE);
return project->priv->encoding_profiles;
}

104
ges/ges-project.h Normal file
View file

@ -0,0 +1,104 @@
/* GStreamer Editing Services
*
* Copyright (C) <2012> 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.
*/
#ifndef _GES_PROJECT_
#define _GES_PROJECT_
#include <glib-object.h>
#include <gio/gio.h>
#include <ges/ges-types.h>
#include <ges/ges-asset.h>
#include <gst/pbutils/encoding-profile.h>
G_BEGIN_DECLS
#define GES_TYPE_PROJECT ges_project_get_type()
#define GES_PROJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_PROJECT, GESProject))
#define GES_PROJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_PROJECT, GESProjectClass))
#define GES_IS_PROJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_PROJECT))
#define GES_IS_PROJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_PROJECT))
#define GES_PROJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_PROJECT, GESProjectClass))
typedef struct _GESProjectPrivate GESProjectPrivate;
GType ges_project_get_type (void);
struct _GESProject
{
GESAsset parent;
/* <private> */
GESProjectPrivate *priv;
/* Padding for API extension */
gpointer __ges_reserved[GES_PADDING_LARGE];
};
struct _GESProjectClass
{
GESAssetClass parent_class;
/* Signals */
void (*asset_added) (GESProject * self,
GESAsset * asset);
void (*asset_removed) (GESProject * self,
GESAsset * asset);
gboolean (*missing_uri) (GESProject * self,
GError * error,
GESAsset * wrong_asset);
gboolean (*loading_error) (GESProject * self,
GError * error,
gchar * id,
GType extractable_type);
gboolean (*loaded) (GESProject * self,
GESTimeline * timeline);
gpointer _ges_reserved[GES_PADDING];
};
gboolean ges_project_add_asset (GESProject* project,
GESAsset *asset);
gboolean ges_project_remove_asset (GESProject *project,
GESAsset * asset);
GList * ges_project_list_assets (GESProject * project,
GType filter);
gboolean ges_project_save (GESProject * project,
GESTimeline * timeline,
const gchar *uri,
GESAsset * formatter_asset,
gboolean overwrite,
GError **error);
gboolean ges_project_load (GESProject * project,
GESTimeline * timeline,
GError **error);
GESProject * ges_project_new (const gchar *uri);
gchar * ges_project_get_uri (GESProject *project);
GESAsset * ges_project_get_asset (GESProject * project,
const gchar *id,
GType extractable_type);
gboolean ges_project_create_asset (GESProject * project,
const gchar *id,
GType extractable_type);
gboolean ges_project_add_encoding_profile (GESProject *project,
GstEncodingProfile *profile);
const GList *ges_project_list_encoding_profiles (GESProject *project);
G_END_DECLS
#endif /* _GES_PROJECT */

3
ges/ges-types.h
View file

@ -146,6 +146,9 @@ typedef struct _GESAssetClass GESAssetClass;
typedef struct _GESAssetFileSource GESAssetFileSource;
typedef struct _GESAssetFileSourceClass GESAssetFileSourceClass;
typedef struct _GESProject GESProject;
typedef struct _GESProjectClass GESProjectClass;
typedef struct _GESExtractable GESExtractable;
typedef struct _GESExtractableInterface GESExtractableInterface;

3
ges/ges.h
View file

@ -47,6 +47,9 @@
#include <ges/ges-screenshot.h>
#include <ges/ges-asset.h>
#include <ges/ges-asset-file-source.h>
#if 0
#include <ges/ges-project.h>
#endif
#include <ges/ges-extractable.h>
#include <ges/ges-track.h>