*
* 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.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstpreset
+ * @title: GstPreset
* @short_description: helper interface for element presets
*
* This interface offers methods to query and manipulate parameter preset sets.
* native preset format of those wrapped plugins.
* One method that is useful to be overridden is gst_preset_get_property_names().
* With that one can control which properties are saved and in which order.
+ * When implementing support for read-only presets, one should set the vmethods
+ * for gst_preset_save_preset() and gst_preset_delete_preset() to %NULL.
+ * Applications can use gst_preset_is_editable() to check for that.
+ *
+ * The default implementation supports presets located in a system directory,
+ * application specific directory and in the users home directory. When getting
+ * a list of presets individual presets are read and overlaid in 1) system,
+ * 2) application and 3) user order. Whenever an earlier entry is newer, the
+ * later entries will be updated. Since 1.8 you can also provide extra paths
+ * where to find presets through the GST_PRESET_PATH environment variable.
+ * Presets found in those paths will be considered as "app presets".
*/
/* FIXME:
* - non racyness
* wide
* - can we use a lock inside a names shared memory segment?
*
- * - need to add support for GstChildProxy
- * we can do this in a next iteration, the format is flexible enough
- * http://www.buzztard.org/index.php/Preset_handling_interface
- *
* - should there be a 'preset-list' property to get the preset list
* (and to connect a notify:: to to listen for changes)
* we could use gnome_vfs_monitor_add() to monitor the user preset_file.
* - should there be a 'preset-name' property so that we can set a preset via
* gst-launch, or should we handle this with special syntax in gst-launch:
* gst-launch element preset:<preset-name> property=value ...
- * - this would alloow to hanve preset-bundles too (a preset on bins that
+ * - this would allow to have preset-bundles too (a preset on bins that
* specifies presets for children
- *
- * - GstChildProxy suport
- * - if we stick with GParamSpec **_list_properties()
- * we need to use g_param_spec_set_qdata() to specify the instance on each GParamSpec
- * OBJECT_LOCK(obj); // ChildProxy needs GstIterator support
- * num=gst_child_proxy_get_children_count(obj);
- * for(i=0;i<num;i++) {
- * child=gst_child_proxy_get_child_by_index(obj,i);
- * // v1 ----
- * g_object_class_list_properties(child,&num);
- * // foreach prop
- * // g_param_spec_set_qdata(prop, quark, (gpointer)child);
- * // add to result
- * // v2 ----
- * // children have to implement preset-iface too tag the returned GParamSpec* with the owner
- * props=gst_preset_list_properties(child);
- * // add props to result
- * }
- * OBJECT_UNLOCK(obj);
- *
*/
#include "gst_private.h"
#include "gstpreset.h"
+#include "gstchildproxy.h"
#include "gstinfo.h"
#include "gstvalue.h"
#endif
#include <glib/gstdio.h>
+#ifdef G_OS_WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+extern HMODULE _priv_gst_dll_handle;
+#endif
+
#define GST_CAT_DEFAULT preset_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define PRESET_HEADER_VERSION "version"
static GQuark preset_user_path_quark = 0;
+static GQuark preset_app_path_quark = 0;
static GQuark preset_system_path_quark = 0;
static GQuark preset_quark = 0;
-/*static GQuark property_list_quark = 0;*/
+/* the application can set a custom path that is checked in addition to standard
+ * system and user dirs. This helps to develop new presets first local to the
+ * application.
+ */
+static gchar *preset_app_dir = NULL;
/* default iface implementation */
/*
* preset_get_paths:
* @preset: a #GObject that implements #GstPreset
- * @preset_user_path: location for path or %NULL
- * @preset_system_path: location for path or %NULL
+ * @preset_user_path: (out) (allow-none): location for path or %NULL
+ * @preset_app_path: (out) (allow-none): location for path or %NULL
+ * @preset_system_path: (out) (allow-none): location for path or %NULL
*
- * Fetch the preset_path for user local and system wide settings. Don't free
- * after use.
+ * Fetch the preset_path for user local, application specific and system wide
+ * settings. Don't free after use.
*
* Returns: %FALSE if no paths could be found.
*/
static gboolean
preset_get_paths (GstPreset * preset, const gchar ** preset_user_path,
- const gchar ** preset_system_path)
+ const gchar ** preset_app_path, const gchar ** preset_system_path)
{
GType type = G_TYPE_FROM_INSTANCE (preset);
gchar *preset_path;
const gchar *element_name;
- /* we use the element name when we must contruct the paths */
+ /* we use the element name when we must construct the paths */
element_name = G_OBJECT_TYPE_NAME (preset);
GST_INFO_OBJECT (preset, "element_name: '%s'", element_name);
/* user presets go in user's XDG data directory. */
preset_dir = g_build_filename (g_get_user_data_dir (),
- "gstreamer-" GST_MAJORMINOR, "presets", NULL);
+ "gstreamer-" GST_API_VERSION, "presets", NULL);
GST_INFO_OBJECT (preset, "user_preset_dir: '%s'", preset_dir);
preset_path =
g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.prs", preset_dir,
*preset_user_path = preset_path;
}
+ if (preset_app_path) {
+ if (preset_app_dir) {
+ if (!(preset_path = g_type_get_qdata (type, preset_system_path_quark))) {
+ preset_path = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.prs",
+ preset_app_dir, element_name);
+ GST_INFO_OBJECT (preset, "application_preset_path: '%s'", preset_path);
+
+ /* cache the preset path to the type */
+ g_type_set_qdata (type, preset_app_path_quark, preset_path);
+ }
+ *preset_app_path = preset_path;
+ } else {
+ *preset_app_path = NULL;
+ }
+ }
+
if (preset_system_path) {
/* preset system path requested, see if we have it cached in the qdata */
if (!(preset_path = g_type_get_qdata (type, preset_system_path_quark))) {
gchar *preset_dir;
- /* system presets in '$GST_DATADIR/gstreamer-0.10/presets/GstAudioPanorama.prs' */
- preset_dir = g_build_filename (GST_DATADIR, "gstreamer-" GST_MAJORMINOR,
+ /* system presets in '$GST_DATADIR/gstreamer-1.0/presets/GstAudioPanorama.prs' */
+#ifdef G_OS_WIN32
+ gchar *basedir =
+ g_win32_get_package_installation_directory_of_module
+ (_priv_gst_dll_handle);
+ preset_dir =
+ g_build_filename (basedir, "share", "gstreamer-" GST_API_VERSION,
+ "presets", NULL);
+ g_free (basedir);
+#else
+ preset_dir = g_build_filename (GST_DATADIR, "gstreamer-" GST_API_VERSION,
"presets", NULL);
+#endif
GST_INFO_OBJECT (preset, "system_preset_dir: '%s'", preset_dir);
preset_path = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.prs",
preset_dir, element_name);
return FALSE;
}
-/* caller must free @preset_version after use */
+static guint64
+preset_parse_version (const gchar * str_version)
+{
+ guint major, minor, micro, nano;
+ gint num;
+
+ major = minor = micro = nano = 0;
+
+ /* parse version (e.g. 0.10.15.1) to guint64 */
+ num = sscanf (str_version, "%u.%u.%u.%u", &major, &minor, µ, &nano);
+ /* make sure we have at least "major.minor" */
+ if (num > 1) {
+ guint64 version;
+
+ version = ((((major << 8 | minor) << 8) | micro) << 8) | nano;
+ GST_DEBUG ("version %s -> %" G_GUINT64_FORMAT, str_version, version);
+ return version;
+ }
+ return G_GUINT64_CONSTANT (0);
+}
+
static GKeyFile *
preset_open_and_parse_header (GstPreset * preset, const gchar * preset_path,
- gchar ** preset_version)
+ guint64 * preset_version)
{
GKeyFile *in;
GError *error = NULL;
g_free (name);
/* get the version now so that the caller can check it */
- if (preset_version)
- *preset_version =
+ if (preset_version) {
+ gchar *str =
g_key_file_get_value (in, PRESET_HEADER, PRESET_HEADER_VERSION, NULL);
+ *preset_version = preset_parse_version (str);
+ g_free (str);
+ }
return in;
/* ERRORS */
load_error:
{
- GST_WARNING_OBJECT (preset, "Unable to read preset file %s: %s",
+ GST_INFO_OBJECT (preset, "Unable to read preset file %s: %s",
preset_path, error->message);
g_error_free (error);
g_key_file_free (in);
}
}
-static guint64
-preset_parse_version (const gchar * str_version)
-{
- guint major, minor, micro, nano;
- gint num;
-
- major = minor = micro = nano = 0;
-
- /* parse version (e.g. 0.10.15.1) to guint64 */
- num = sscanf (str_version, "%u.%u.%u.%u", &major, &minor, µ, &nano);
- /* make sure we have atleast "major.minor" */
- if (num > 1) {
- guint64 version;
-
- version = ((((major << 8 | minor) << 8) | micro) << 8) | nano;
- GST_DEBUG ("version %s -> %" G_GUINT64_FORMAT, str_version, version);
- return version;
- }
- return G_GUINT64_CONSTANT (0);
-}
-
static void
preset_merge (GKeyFile * system, GKeyFile * user)
{
g_strfreev (groups);
}
+typedef struct
+{
+ GKeyFile *preset;
+ guint64 version;
+} PresetAndVersion;
+
+static gint
+compare_preset_and_version (gconstpointer a, gconstpointer b,
+ gpointer user_data)
+{
+ const PresetAndVersion *pa = a, *pb = b;
+
+ if (pa->version > pb->version)
+ return -1;
+ if (pa->version < pb->version)
+ return 1;
+ else
+ return 0;
+}
+
/* reads the user and system presets files and merges them together. This
* function caches the GKeyFile on the element type. If there is no existing
* preset file, a new in-memory GKeyFile will be created. */
/* first see if the have a cached version for the type */
if (!(presets = g_type_get_qdata (type, preset_quark))) {
- const gchar *preset_user_path, *preset_system_path;
- gchar *str_version_user = NULL, *str_version_system = NULL;
- gboolean updated_from_system = FALSE;
- GKeyFile *in_user, *in_system;
+ const gchar *preset_user_path, *preset_app_path, *preset_system_path;
+ guint64 version_system = G_GUINT64_CONSTANT (0);
+ guint64 version_app = G_GUINT64_CONSTANT (0);
+ guint64 version_user = G_GUINT64_CONSTANT (0);
+ guint64 version = G_GUINT64_CONSTANT (0);
+ gboolean merged = FALSE;
+ GKeyFile *in_user, *in_app = NULL, *in_system;
+ GQueue in_env = G_QUEUE_INIT;
+ gboolean have_env = FALSE;
+ const gchar *envvar;
+
+ /* try to load the user, app and system presets, we do this to get the
+ * versions of all files. */
+ preset_get_paths (preset, &preset_user_path, &preset_app_path,
+ &preset_system_path);
+ in_user = preset_open_and_parse_header (preset, preset_user_path,
+ &version_user);
- preset_get_paths (preset, &preset_user_path, &preset_system_path);
+ if (preset_app_path) {
+ in_app = preset_open_and_parse_header (preset, preset_app_path,
+ &version_app);
+ }
+
+ envvar = g_getenv ("GST_PRESET_PATH");
+ if (envvar) {
+ gint i;
+ gchar **preset_dirs = g_strsplit (envvar, G_SEARCHPATH_SEPARATOR_S, -1);
+
+ for (i = 0; preset_dirs[i]; i++) {
+ gchar *preset_path = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "%s.prs",
+ preset_dirs[i], G_OBJECT_TYPE_NAME (preset));
+ GKeyFile *env_file;
+ guint64 env_version;
+
+ env_file = preset_open_and_parse_header (preset, preset_path,
+ &env_version);
+ g_free (preset_path);
+ if (env_file) {
+ PresetAndVersion *pv = g_new (PresetAndVersion, 1);
+ pv->preset = env_file;
+ pv->version = env_version;
+ g_queue_push_tail (&in_env, pv);
+ have_env = TRUE;
+ }
+ }
+ g_strfreev (preset_dirs);
+ }
- /* try to load the user and system presets, we do this to get the versions
- * of both files. */
- in_user = preset_open_and_parse_header (preset, preset_user_path,
- &str_version_user);
in_system = preset_open_and_parse_header (preset, preset_system_path,
- &str_version_system);
+ &version_system);
/* compare version to check for merge */
if (in_system) {
- /* keep system presets if there is no user preset or when the system
- * version is higher than the user version. */
- if (!in_user) {
- presets = in_system;
- } else if (preset_parse_version (str_version_system) >
- preset_parse_version (str_version_user)) {
- presets = in_system;
- updated_from_system = TRUE;
+ presets = in_system;
+ version = version_system;
+ }
+
+ if (have_env) {
+ GList *l;
+
+ /* merge the ones from the environment paths. If any of them has a
+ * higher version, take that as the "master" version. Lower versions are
+ * then just merged in. */
+ g_queue_sort (&in_env, compare_preset_and_version, NULL);
+ /* highest version to lowest */
+ for (l = in_env.head; l; l = l->next) {
+ PresetAndVersion *pv = l->data;
+
+ if (version > pv->version) {
+ preset_merge (presets, pv->preset);
+ g_key_file_free (pv->preset);
+ } else {
+ if (presets)
+ g_key_file_free (presets);
+ presets = pv->preset;
+ version = pv->version;
+ }
+ g_free (pv);
+ }
+ g_queue_clear (&in_env);
+ }
+
+ if (in_app) {
+ /* if system/env version is higher, merge */
+ if (version > version_app) {
+ preset_merge (presets, in_app);
+ g_key_file_free (in_app);
+ } else {
+ if (presets)
+ g_key_file_free (presets);
+ presets = in_app;
+ version = version_app;
}
}
if (in_user) {
- if (updated_from_system) {
- /* merge user on top of system presets */
+ /* if system/env or app version is higher, merge */
+ if (version > version_user) {
preset_merge (presets, in_user);
g_key_file_free (in_user);
+ merged = TRUE;
} else {
- /* keep user presets */
+ if (presets)
+ g_key_file_free (presets);
presets = in_user;
}
}
- if (!in_user && !in_system) {
- /* we did not load a user or system presets file, create a new one */
+
+ if (!presets) {
+ /* we did not load a user, app or system presets file, create a new one */
presets = g_key_file_new ();
g_key_file_set_string (presets, PRESET_HEADER, PRESET_HEADER_ELEMENT_NAME,
G_OBJECT_TYPE_NAME (preset));
}
- g_free (str_version_user);
- g_free (str_version_system);
-
/* attach the preset to the type */
g_type_set_qdata (type, preset_quark, (gpointer) presets);
- if (updated_from_system) {
+ if (merged) {
gst_preset_default_save_presets_file (preset);
}
}
return presets;
}
+static gint
+compare_strings (gchar ** a, gchar ** b, gpointer user_data)
+{
+ return g_strcmp0 (*a, *b);
+}
+
/* get a list of all supported preset names for an element */
static gchar **
gst_preset_default_get_preset_names (GstPreset * preset)
groups[num_groups] = NULL;
}
}
+ if (!num_groups) {
+ GST_INFO_OBJECT (preset, "Empty preset file");
+ g_strfreev (groups);
+ return NULL;
+ }
+
/* sort the array now */
g_qsort_with_data (groups, num_groups, sizeof (gchar *),
- (GCompareDataFunc) strcmp, NULL);
+ (GCompareDataFunc) compare_strings, NULL);
return groups;
gst_preset_default_get_property_names (GstPreset * preset)
{
GParamSpec **props;
- guint i, j, n_props;
+ guint i, j = 0, n_props;
GObjectClass *gclass;
- gchar **result;
+ gboolean is_child_proxy;
+ gchar **result = NULL;
gclass = G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS (preset));
+ is_child_proxy = GST_IS_CHILD_PROXY (preset);
- /* get a list of normal properties.
- * FIXME, change this for childproxy support. */
+ /* get a list of object properties */
props = g_object_class_list_properties (gclass, &n_props);
- if (!props)
- goto no_properties;
-
- /* allocate array big enough to hold the worst case, including a terminating
- * NULL pointer. */
- result = g_new (gchar *, n_props + 1);
-
- /* now filter out the properties that we can use for presets */
- GST_DEBUG_OBJECT (preset, " filtering properties: %u", n_props);
- for (i = j = 0; i < n_props; i++) {
- if (preset_skip_property (props[i]))
- continue;
-
- /* copy and increment out pointer */
- result[j++] = g_strdup (props[i]->name);
+ if (props) {
+ /* allocate array big enough to hold the worst case, including a terminating
+ * NULL pointer. */
+ result = g_new (gchar *, n_props + 1);
+
+ /* now filter out the properties that we can use for presets */
+ GST_DEBUG_OBJECT (preset, " filtering properties: %u", n_props);
+ for (i = 0; i < n_props; i++) {
+ if (preset_skip_property (props[i]))
+ continue;
+ GST_DEBUG_OBJECT (preset, " using: %s", props[i]->name);
+ result[j++] = g_strdup (props[i]->name);
+ }
+ g_free (props);
}
- result[j] = NULL;
- g_free (props);
- return result;
+ if (is_child_proxy) {
+ guint c, n_children;
+ GObject *child;
+
+ n_children = gst_child_proxy_get_children_count ((GstChildProxy *) preset);
+ for (c = 0; c < n_children; c++) {
+ child = gst_child_proxy_get_child_by_index ((GstChildProxy *) preset, c);
+ gclass = G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS (child));
+
+ props = g_object_class_list_properties (gclass, &n_props);
+ if (props) {
+ /* resize property name array */
+ result = g_renew (gchar *, result, j + n_props + 1);
+
+ /* now filter out the properties that we can use for presets */
+ GST_DEBUG_OBJECT (preset, " filtering properties: %u", n_props);
+ for (i = 0; i < n_props; i++) {
+ if (preset_skip_property (props[i]))
+ continue;
+ GST_DEBUG_OBJECT (preset, " using: %s::%s",
+ GST_OBJECT_NAME (child), props[i]->name);
+ result[j++] = g_strdup_printf ("%s::%s", GST_OBJECT_NAME (child),
+ props[i]->name);
+ }
+ g_free (props);
+ }
- /* ERRORS */
-no_properties:
- {
+ g_object_unref (child);
+ }
+ }
+ if (!result) {
GST_INFO_OBJECT (preset, "object has no properties");
- return NULL;
+ } else {
+ result[j] = NULL;
}
+ return result;
}
/* load the presets of @name for the instance @preset. Returns %FALSE if something
gchar **props;
guint i;
GObjectClass *gclass;
+ gboolean is_child_proxy;
/* get the presets from the type */
if (!(presets = preset_get_keyfile (preset)))
goto no_properties;
gclass = G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS (preset));
+ is_child_proxy = GST_IS_CHILD_PROXY (preset);
/* for each of the property names, find the preset parameter and try to
* configure the property with its value */
for (i = 0; props[i]; i++) {
gchar *str;
GValue gvalue = { 0, };
- GParamSpec *property;
+ GParamSpec *property = NULL;
/* check if we have a settings for this element property */
if (!(str = g_key_file_get_value (presets, name, props[i], NULL))) {
/* the element has a property but the parameter is not in the keyfile */
- GST_WARNING_OBJECT (preset, "parameter '%s' not in preset", props[i]);
+ GST_INFO_OBJECT (preset, "parameter '%s' not in preset", props[i]);
continue;
}
GST_DEBUG_OBJECT (preset, "setting value '%s' for property '%s'", str,
props[i]);
- /* FIXME, change for childproxy to get the property and element. */
- if (!(property = g_object_class_find_property (gclass, props[i]))) {
+ if (is_child_proxy) {
+ gst_child_proxy_lookup ((GstChildProxy *) preset, props[i], NULL,
+ &property);
+ } else {
+ property = g_object_class_find_property (gclass, props[i]);
+ }
+ if (!property) {
/* the parameter was in the keyfile, the element said it supported it but
* then the property was not found in the element. This should not happen. */
GST_WARNING_OBJECT (preset, "property '%s' not in object", props[i]);
* the object property */
g_value_init (&gvalue, property->value_type);
if (gst_value_deserialize (&gvalue, str)) {
- /* FIXME, change for childproxy support */
- g_object_set_property (G_OBJECT (preset), props[i], &gvalue);
+ if (is_child_proxy) {
+ gst_child_proxy_set_property ((GstChildProxy *) preset, props[i],
+ &gvalue);
+ } else {
+ g_object_set_property ((GObject *) preset, props[i], &gvalue);
+ }
} else {
GST_WARNING_OBJECT (preset,
"deserialization of value '%s' for property '%s' failed", str,
gchar *data;
gsize data_size;
- preset_get_paths (preset, &preset_path, NULL);
+ preset_get_paths (preset, &preset_path, NULL, NULL);
/* get the presets from the type */
if (!(presets = preset_get_keyfile (preset)))
gchar **props;
guint i;
GObjectClass *gclass;
+ gboolean is_child_proxy;
GST_INFO_OBJECT (preset, "saving new preset: %s", name);
goto no_properties;
gclass = G_OBJECT_CLASS (GST_ELEMENT_GET_CLASS (preset));
+ is_child_proxy = GST_IS_CHILD_PROXY (preset);
/* loop over the object properties and store the property value in the
* keyfile */
for (i = 0; props[i]; i++) {
GValue gvalue = { 0, };
gchar *str;
- GParamSpec *property;
+ GParamSpec *property = NULL;
- /* FIXME, change for childproxy to get the property and element. */
- if (!(property = g_object_class_find_property (gclass, props[i]))) {
+ if (is_child_proxy) {
+ gst_child_proxy_lookup ((GstChildProxy *) preset, props[i], NULL,
+ &property);
+ } else {
+ property = g_object_class_find_property (gclass, props[i]);
+ }
+ if (!property) {
/* the element said it supported the property but then it does not have
* that property. This should not happen. */
GST_WARNING_OBJECT (preset, "property '%s' not in object", props[i]);
continue;
}
+ if (property->flags & G_PARAM_DEPRECATED) {
+ GST_INFO_OBJECT (preset, "Not saving property %s as it is deprecated",
+ property->name);
+ continue;
+ }
+
g_value_init (&gvalue, property->value_type);
- /* FIXME, change for childproxy */
- g_object_get_property (G_OBJECT (preset), props[i], &gvalue);
+ if (is_child_proxy) {
+ gst_child_proxy_get_property ((GstChildProxy *) preset, props[i],
+ &gvalue);
+ } else {
+ g_object_get_property ((GObject *) preset, props[i], &gvalue);
+ }
if ((str = gst_value_serialize (&gvalue))) {
g_key_file_set_string (presets, name, props[i], (gpointer) str);
* gst_preset_get_preset_names:
* @preset: a #GObject that implements #GstPreset
*
- * Get a copy of preset names as a NULL terminated string array.
+ * Get a copy of preset names as a %NULL terminated string array.
*
* Returns: (transfer full) (array zero-terminated=1) (element-type gchar*):
- * list with names, ue g_strfreev() after usage.
- *
- * Since: 0.10.20
+ * list with names, use g_strfreev() after usage.
*/
gchar **
gst_preset_get_preset_names (GstPreset * preset)
*
* Returns: (transfer full) (array zero-terminated=1) (element-type gchar*): an
* array of property names which should be freed with g_strfreev() after use.
- *
- * Since: 0.10.20
*/
gchar **
gst_preset_get_property_names (GstPreset * preset)
* Load the given preset.
*
* Returns: %TRUE for success, %FALSE if e.g. there is no preset with that @name
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_load_preset (GstPreset * preset, const gchar * name)
* is already a preset by this @name it will be overwritten.
*
* Returns: %TRUE for success, %FALSE
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_save_preset (GstPreset * preset, const gchar * name)
* overwritten.
*
* Returns: %TRUE for success, %FALSE if e.g. there is no preset with @old_name
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_rename_preset (GstPreset * preset, const gchar * old_name,
* Delete the given preset.
*
* Returns: %TRUE for success, %FALSE if e.g. there is no preset with that @name
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_delete_preset (GstPreset * preset, const gchar * name)
* @preset: a #GObject that implements #GstPreset
* @name: preset name
* @tag: meta data item name
- * @value: new value
+ * @value: (allow-none): new value
*
* Sets a new @value for an existing meta data item or adds a new item. Meta
* data @tag names can be something like e.g. "comment". Supplying %NULL for the
* @value will unset an existing value.
*
* Returns: %TRUE for success, %FALSE if e.g. there is no preset with that @name
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_set_meta (GstPreset * preset, const gchar * name, const gchar * tag,
*
* Returns: %TRUE for success, %FALSE if e.g. there is no preset with that @name
* or no value for the given @tag
- *
- * Since: 0.10.20
*/
gboolean
gst_preset_get_meta (GstPreset * preset, const gchar * name, const gchar * tag,
return GST_PRESET_GET_INTERFACE (preset)->get_meta (preset, name, tag, value);
}
+/**
+ * gst_preset_set_app_dir:
+ * @app_dir: (type filename): the application specific preset dir
+ *
+ * Sets an extra directory as an absolute path that should be considered when
+ * looking for presets. Any presets in the application dir will shadow the
+ * system presets.
+ *
+ * Returns: %TRUE for success, %FALSE if the dir already has been set
+ */
+gboolean
+gst_preset_set_app_dir (const gchar * app_dir)
+{
+ g_return_val_if_fail (app_dir, FALSE);
+
+ if (!preset_app_dir) {
+ preset_app_dir = g_strdup (app_dir);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/**
+ * gst_preset_get_app_dir:
+ *
+ * Gets the directory for application specific presets if set by the
+ * application.
+ *
+ * Returns: (nullable) (type filename): the directory or %NULL, don't free or modify
+ * the string
+ */
+const gchar *
+gst_preset_get_app_dir (void)
+{
+ return preset_app_dir;
+}
+
+/**
+ * gst_preset_is_editable:
+ * @preset: a #GObject that implements #GstPreset
+ *
+ * Check if one can add new presets, change existing ones and remove presets.
+ *
+ * Returns: %TRUE if presets are editable or %FALSE if they are static
+ *
+ * Since: 1.6
+ */
+gboolean
+gst_preset_is_editable (GstPreset * preset)
+{
+ GstPresetInterface *iface = GST_PRESET_GET_INTERFACE (preset);
+
+ return iface->save_preset && iface->delete_preset;
+}
+
/* class internals */
static void
preset_quark = g_quark_from_static_string ("GstPreset::presets");
preset_user_path_quark =
g_quark_from_static_string ("GstPreset::user_path");
+ preset_app_path_quark = g_quark_from_static_string ("GstPreset::app_path");
preset_system_path_quark =
g_quark_from_static_string ("GstPreset::system_path");
#if 0
- property_list_quark = g_quark_from_static_string ("GstPreset::properties");
-
/* create interface properties, each element would need to override this
* g_object_class_override_property(gobject_class, PROP_PRESET_NAME, "preset-name");
* and in _set_property() do
projects / platform / upstream / gstreamer.git / blobdiff