mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 18:21:04 +00:00
Code Issues 1 Projects Releases Wiki Activity

GESKeyFileFormatter: New GKeyFile GESFormatter

Browse source
This commit is contained in:
Brandon Lewis 2010-10-07 13:49:15 +01:00 committed by Edward Hervey
parent f1b6e175cd
commit 9f1dc7709a
10 changed files with 588 additions and 405 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
docs/libs/ges-docs.sgml
View file

@ -80,6 +80,7 @@ platform as well as Windows. It is released under the GNU Library General Public
<chapter>
<title>Serialization Classes</title>
<xi:include href="xml/ges-formatter.xml"/>
<xi:include href="xml/ges-keyfile-formatter.xml"/>
</chapter>
<chapter id="ges-hierarchy">

18
docs/libs/ges-sections.txt
View file

@ -536,7 +536,7 @@ GES_TYPE_TRACK_TEXT_OVERLAY
<TITLE>GESFormatter</TITLE>
GESFormatter
GESFormatterClass
ges_formatter_new
ges_default_formatter_new
ges_formatter_load_from_uri
ges_formatter_save_to_uri
ges_formatter_new_for_uri
@ -553,3 +553,19 @@ GES_IS_FORMATTER
GES_IS_FORMATTER_CLASS
GES_TYPE_FORMATTER
</SECTION>
<SECTION>
<FILE>ges-keyfile-formatter</FILE>
<TITLE>GESFormatter</TITLE>
GESKeyfileFormatter
GESKeyfileFormatterClass
ges_keyfile_formatter_new
<SUBSECTION Standard>
GES_IS_KEYFILE_FORMATTER
GES_IS_KEYFILE_FORMATTER_CLASS
GES_KEYFILE_FORMATTER
GES_KEYFILE_FORMATTER_CLASS
GES_KEYFILE_FORMATTER_GET_CLASS
GES_TYPE_KEYFILE_FORMATTER
ges_keyfile_formatter_get_type
</SECTION>

1
docs/libs/ges.types
View file

@ -31,3 +31,4 @@ ges_text_halign_get_type
ges_video_test_pattern_get_type
ges_track_operation_get_type
ges_formatter_get_type
ges_keyfile_formatter_get_type

2
ges/Makefile.am
View file

@ -39,6 +39,7 @@ libges_@GST_MAJORMINOR@_la_SOURCES = \
ges-track-text-overlay.c \
ges-screenshot.c \
ges-formatter.c \
ges-keyfile-formatter.c \
ges-utils.c
libges_@GST_MAJORMINOR@includedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/ges/
@ -76,6 +77,7 @@ libges_@GST_MAJORMINOR@include_HEADERS = \
ges-track-text-overlay.h \
ges-screenshot.h \
ges-formatter.h \
ges-keyfile-formatter.h \
ges-utils.h
libges_@GST_MAJORMINOR@_la_CFLAGS = -I$(top_srcdir) $(GST_PROFILE_CFLAGS) $(GST_PBUTILS_CFLAGS) $(GST_VIDEO_CFLAGS) $(GST_CONTROLLER_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)

421
ges/ges-formatter.c
View file

@ -37,10 +37,6 @@ G_DEFINE_TYPE (GESFormatter, ges_formatter, G_TYPE_OBJECT);
static void ges_formatter_dispose (GObject * object);
static void ges_formatter_finalize (GObject * object);
/* for ini format */
static gboolean save_ini (GESFormatter * formatter, GESTimeline * timeline);
static gboolean load_ini (GESFormatter * formatter, GESTimeline * timeline);
static void
ges_formatter_class_init (GESFormatterClass * klass)
{
@ -48,9 +44,6 @@ ges_formatter_class_init (GESFormatterClass * klass)
object_class->dispose = ges_formatter_dispose;
object_class->finalize = ges_formatter_finalize;
klass->save = save_ini;
klass->load = load_ini;
}
static void
@ -74,12 +67,6 @@ ges_formatter_finalize (GObject * formatter)
{
}
GESFormatter *
ges_formatter_new (void)
{
return g_object_new (GES_TYPE_FORMATTER, NULL);
}
/**
* ges_formatter_new_for_uri:
* @uri: a #gchar * pointing to the uri
@ -94,10 +81,25 @@ GESFormatter *
ges_formatter_new_for_uri (gchar * uri)
{
if (ges_formatter_can_load_uri (uri))
return ges_formatter_new ();
return GES_FORMATTER (ges_keyfile_formatter_new ());
return NULL;
}
/**
* ges_formatter_default_new:
*
* Creates a new instance of the default GESFormatter type on this system
* (currently #GESKeyFileFormatter).
*
* Returns: a #GESFormatter instance or NULL
*/
GESFormatter *
ges_default_formatter_new (void)
{
return GES_FORMATTER (ges_keyfile_formatter_new ());
}
/**
* ges_formatter_can_load_uri:
* @uri: a #gchar * pointing to the URI
@ -187,6 +189,7 @@ ges_formatter_load (GESFormatter * formatter, GESTimeline * timeline)
if (klass->load)
return klass->load (formatter, timeline);
GST_ERROR ("not implemented!");
return FALSE;
}
@ -213,6 +216,7 @@ ges_formatter_save (GESFormatter * formatter, GESTimeline * timeline)
if (klass->save)
return klass->save (formatter, timeline);
GST_ERROR ("not implemented!");
return FALSE;
}
@ -315,392 +319,3 @@ ges_formatter_save_to_uri (GESFormatter * formatter, GESTimeline * timeline,
return ret;
}
static gboolean
save_ini (GESFormatter * formatter, GESTimeline * timeline)
{
GKeyFile *kf;
GList *tmp, *tracks;
int i = 0;
int n_objects = 0;
gchar buffer[255];
GST_DEBUG ("saving formatter");
kf = g_key_file_new ();
g_key_file_set_value (kf, "General", "version", "1");
tracks = ges_timeline_get_tracks (timeline);
for (i = 0, tmp = tracks; tmp; i++, tmp = tmp->next) {
GESTrack *track;
gchar *type;
gchar *caps;
GValue v = { 0 };
track = GES_TRACK (tmp->data);
g_snprintf (buffer, 255, "Track%d", i);
g_value_init (&v, GES_TYPE_TRACK_TYPE);
g_object_get_property (G_OBJECT (track), "track-type", &v);
type = gst_value_serialize (&v);
caps = gst_caps_to_string (track->caps);
g_key_file_set_value (kf, buffer, "type", type);
g_key_file_set_string (kf, buffer, "caps", caps);
g_free (caps);
g_free (type);
gst_object_unref (track);
tmp->data = NULL;
}
g_list_free (tracks);
for (i = 0, tmp = timeline->layers; tmp; i++, tmp = tmp->next) {
const gchar *type;
GESTimelineLayer *layer;
GList *objs, *cur;
layer = tmp->data;
g_snprintf (buffer, 255, "Layer%d", i);
if (GES_IS_SIMPLE_TIMELINE_LAYER (tmp->data)) {
type = "simple";
} else {
type = "default";
}
g_key_file_set_integer (kf, buffer, "priority", layer->priority);
g_key_file_set_value (kf, buffer, "type", type);
objs = ges_timeline_layer_get_objects (layer);
for (cur = objs; cur; cur = cur->next) {
GESTimelineObject *obj;
GParamSpec **properties;
guint i, n;
obj = GES_TIMELINE_OBJECT (cur->data);
properties =
g_object_class_list_properties (G_OBJECT_GET_CLASS (obj), &n);
g_snprintf (buffer, 255, "Object%d", n_objects);
n_objects++;
g_key_file_set_value (kf, buffer, "type",
G_OBJECT_TYPE_NAME (G_OBJECT (obj)));
for (i = 0; i < n; i++) {
GValue v = { 0 };
gchar *serialized;
GParamSpec *p = properties[i];
g_value_init (&v, p->value_type);
g_object_get_property (G_OBJECT (obj), p->name, &v);
/* FIXME: does this work for properties marked G_PARAM_CONSTRUCT_ONLY?
* */
if ((p->flags & G_PARAM_READABLE) && (p->flags & G_PARAM_WRITABLE)) {
if (!(serialized = gst_value_serialize (&v)))
continue;
g_key_file_set_string (kf, buffer, p->name, serialized);
g_free (serialized);
}
g_value_unset (&v);
}
g_free (properties);
g_object_unref (obj);
cur->data = NULL;
}
g_list_free (objs);
}
if (formatter->data) {
g_free (formatter->data);
}
formatter->data = g_key_file_to_data (kf, &formatter->length, NULL);
g_key_file_free (kf);
return TRUE;
}
static gboolean
create_track (GKeyFile * kf, gchar * group, GESTimeline * timeline)
{
GESTrack *track;
GstCaps *caps;
gchar *caps_field, *type_field;
GValue v = { 0 };
if (!(caps_field = g_key_file_get_string (kf, group, "caps", NULL)))
return FALSE;
caps = gst_caps_from_string (caps_field);
g_free (caps_field);
if (!(type_field = g_key_file_get_value (kf, group, "type", NULL)))
return FALSE;
g_value_init (&v, GES_TYPE_TRACK_TYPE);
gst_value_deserialize (&v, type_field);
g_free (type_field);
if (!caps)
return FALSE;
track = ges_track_new (g_value_get_flags (&v), caps);
if (!ges_timeline_add_track (timeline, track)) {
g_object_unref (track);
return FALSE;
}
return TRUE;
}
static GESTimelineLayer *
create_layer (GKeyFile * kf, gchar * group, GESTimeline * timeline)
{
GESTimelineLayer *ret = NULL;
gchar *type_field, *priority_field;
gboolean is_simple;
guint priority;
if (!(type_field = g_key_file_get_value (kf, group, "type", NULL)))
return FALSE;
is_simple = g_str_equal (type_field, "simple");
g_free (type_field);
if (!(priority_field = g_key_file_get_value (kf, group, "priority", NULL)))
return FALSE;
priority = strtoul (priority_field, NULL, 10);
g_free (priority_field);
if (is_simple) {
GESSimpleTimelineLayer *simple;
simple = ges_simple_timeline_layer_new ();
ret = (GESTimelineLayer *) simple;
} else {
ret = ges_timeline_layer_new ();
}
ges_timeline_layer_set_priority (ret, priority);
if (!ges_timeline_add_layer (timeline, ret)) {
g_object_unref (ret);
ret = NULL;
}
return ret;
}
static gboolean
create_object (GKeyFile * kf, gchar * group, GESTimelineLayer * layer)
{
GType type;
gchar *type_name;
GObject *obj;
GESTimelineObject *timeline_obj;
gchar **keys;
gsize n_keys, i;
GParamSpec *pspec;
GObjectClass *klass;
GParameter *params, *p;
gboolean ret = FALSE;
GST_INFO ("processing '%s'", group);
/* get a reference to the object class */
if (!(type_name = g_key_file_get_value (kf, group, "type", NULL))) {
GST_ERROR ("no type name for object '%s'", group);
return FALSE;
}
if (!(type = g_type_from_name (type_name))) {
GST_ERROR ("invalid type name '%s'", type_name);
goto fail_free_type_name;
}
if (!(klass = g_type_class_ref (type))) {
GST_ERROR ("couldn't get class ref");
goto fail_free_type_name;
}
if (!(keys = g_key_file_get_keys (kf, group, &n_keys, NULL)))
goto fail_unref_class;
/* create an array of parameters for the call to g_new0 */
/* skip first field 'type' */
if (!(params = g_new0 (GParameter, (n_keys - 1)))) {
GST_ERROR ("couldn't allocate parameter list");
goto fail_free_keys;
}
GST_DEBUG ("processing parameter list", group);
for (p = params, i = 1; i < n_keys; i++, p++) {
gchar *value;
gchar *key;
key = keys[i];
GST_DEBUG ("processing key '%s'", key);
/* find the param spec for this property */
if (!(pspec = g_object_class_find_property (klass, key))) {
GST_ERROR ("Object type %s has no property %s", type_name, key);
goto fail_free_params;
}
p->name = key;
g_value_init (&p->value, pspec->value_type);
/* assume this is going to work */
value = g_key_file_get_string (kf, group, key, NULL);
if (!gst_value_deserialize (&p->value, value)) {
GST_ERROR ("Couldn't read property value '%s' for property '%s'",
key, value);
goto fail_free_params;
}
g_free (value);
}
/* create the object from the supplied type name */
if (!(obj = g_object_newv (type, (n_keys - 1), params))) {
GST_ERROR ("couldn't create object");
goto fail_free_type_name;
}
/* check that we have a subclass of GESTimelineObject */
if (!GES_IS_TIMELINE_OBJECT (obj)) {
GST_ERROR ("'%s' is not a subclass of GESTimelineObject!", type_name);
goto fail_unref_obj;
}
timeline_obj = (GESTimelineObject *) obj;
/* add the object to the layer */
if (GES_IS_SIMPLE_TIMELINE_LAYER (layer)) {
if (!ges_simple_timeline_layer_add_object ((GESSimpleTimelineLayer *)
layer, timeline_obj, -1)) {
goto fail_unref_obj;
}
} else {
if (!ges_timeline_layer_add_object (layer, timeline_obj)) {
goto fail_unref_obj;
}
}
ret = TRUE;
fail_unref_obj:
if (!ret)
g_object_unref (obj);
fail_free_params:
for (p = params, i = 1; i < n_keys; i++, p++) {
g_value_unset (&p->value);
}
g_free (params);
fail_free_keys:
g_strfreev (keys);
fail_unref_class:
g_type_class_unref (klass);
fail_free_type_name:
g_free (type_name);
return ret;
}
static gboolean
load_ini (GESFormatter * formatter, GESTimeline * timeline)
{
GKeyFile *kf;
GError *error = NULL;
gboolean ret = TRUE;
gchar **groups;
gsize n_groups, i;
GESTimelineLayer *cur_layer = NULL;
kf = g_key_file_new ();
if (!g_key_file_load_from_data (kf, formatter->data, formatter->length,
G_KEY_FILE_NONE, &error)) {
ret = FALSE;
GST_ERROR (error->message);
GST_INFO (formatter->data);
goto free_kf;
}
if (!(groups = g_key_file_get_groups (kf, &n_groups))) {
goto free_kf;
}
for (i = 0; i < n_groups; i++) {
gchar *group = groups[i];
if (g_str_has_prefix (group, "Track")) {
if (!create_track (kf, group, timeline)) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_has_prefix (group, "Layer")) {
if (!(cur_layer = create_layer (kf, group, timeline))) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_has_prefix (group, "Object")) {
if (!cur_layer) {
GST_ERROR ("Group %s occurs outside of Layer", group);
ret = FALSE;
break;
}
if (!create_object (kf, group, cur_layer)) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_equal (group, "General")) {
continue;
}
else {
GST_ERROR ("Unrecognized group name %s", group);
ret = FALSE;
break;
}
}
g_strfreev (groups);
free_kf:
g_key_file_free (kf);
return ret;
}

2
ges/ges-formatter.h
View file

@ -79,8 +79,8 @@ struct _GESFormatterClass {
GType ges_formatter_get_type (void);
GESFormatter *ges_formatter_new (void);
GESFormatter *ges_formatter_new_for_uri (gchar *uri);
GESFormatter *ges_default_formatter_new (void);
gboolean ges_formatter_can_load_uri (gchar * uri);
gboolean ges_formatter_can_save_uri (gchar * uri);

471
ges/ges-keyfile-formatter.c Normal file
View file

@ -0,0 +1,471 @@
/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon.lewis@collabora.co.uk>
* 2010 Nokia Corporation
*
* 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-keyfile-formatter
* @short_description: Base Class for loading and saving #GESTimeline data.
*
* Responsible for loading and/or saving the contents of a #GESTimeline to/from
* various formats.
**/
#include <gst/gst.h>
#include <stdlib.h>
#include "ges.h"
#include "ges-internal.h"
G_DEFINE_TYPE (GESKeyfileFormatter, ges_keyfile_formatter, GES_TYPE_FORMATTER);
static void ges_keyfile_formatter_dispose (GObject * object);
static void ges_keyfile_formatter_finalize (GObject * object);
/* for ini format */
static gboolean save_keyfile (GESFormatter * keyfile_formatter,
GESTimeline * timeline);
static gboolean load_keyfile (GESFormatter * keyfile_formatter,
GESTimeline * timeline);
static void
ges_keyfile_formatter_class_init (GESKeyfileFormatterClass * klass)
{
GESFormatterClass *formatter_klass;
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (klass);
formatter_klass = GES_FORMATTER_CLASS (klass);
object_class->dispose = ges_keyfile_formatter_dispose;
object_class->finalize = ges_keyfile_formatter_finalize;
formatter_klass->save = save_keyfile;
formatter_klass->load = load_keyfile;
}
static void
ges_keyfile_formatter_init (GESKeyfileFormatter * object)
{
}
static void
ges_keyfile_formatter_dispose (GObject * object)
{
}
static void
ges_keyfile_formatter_finalize (GObject * keyfile_formatter)
{
}
GESKeyfileFormatter *
ges_keyfile_formatter_new (void)
{
return g_object_new (GES_TYPE_KEYFILE_FORMATTER, NULL);
}
static gboolean
save_keyfile (GESFormatter * keyfile_formatter, GESTimeline * timeline)
{
GKeyFile *kf;
GList *tmp, *tracks;
int i = 0;
int n_objects = 0;
gchar buffer[255];
GST_DEBUG ("saving keyfile_formatter");
kf = g_key_file_new ();
g_key_file_set_value (kf, "General", "version", "1");
tracks = ges_timeline_get_tracks (timeline);
for (i = 0, tmp = tracks; tmp; i++, tmp = tmp->next) {
GESTrack *track;
gchar *type;
gchar *caps;
GValue v = { 0 };
track = GES_TRACK (tmp->data);
g_snprintf (buffer, 255, "Track%d", i);
g_value_init (&v, GES_TYPE_TRACK_TYPE);
g_object_get_property (G_OBJECT (track), "track-type", &v);
type = gst_value_serialize (&v);
caps = gst_caps_to_string (track->caps);
g_key_file_set_value (kf, buffer, "type", type);
g_key_file_set_string (kf, buffer, "caps", caps);
g_free (caps);
g_free (type);
gst_object_unref (track);
tmp->data = NULL;
}
g_list_free (tracks);
for (i = 0, tmp = timeline->layers; tmp; i++, tmp = tmp->next) {
const gchar *type;
GESTimelineLayer *layer;
GList *objs, *cur;
layer = tmp->data;
g_snprintf (buffer, 255, "Layer%d", i);
if (GES_IS_SIMPLE_TIMELINE_LAYER (tmp->data)) {
type = "simple";
} else {
type = "default";
}
g_key_file_set_integer (kf, buffer, "priority", layer->priority);
g_key_file_set_value (kf, buffer, "type", type);
objs = ges_timeline_layer_get_objects (layer);
for (cur = objs; cur; cur = cur->next) {
GESTimelineObject *obj;
GParamSpec **properties;
guint i, n;
obj = GES_TIMELINE_OBJECT (cur->data);
properties =
g_object_class_list_properties (G_OBJECT_GET_CLASS (obj), &n);
g_snprintf (buffer, 255, "Object%d", n_objects);
n_objects++;
g_key_file_set_value (kf, buffer, "type",
G_OBJECT_TYPE_NAME (G_OBJECT (obj)));
for (i = 0; i < n; i++) {
GValue v = { 0 };
gchar *serialized;
GParamSpec *p = properties[i];
g_value_init (&v, p->value_type);
g_object_get_property (G_OBJECT (obj), p->name, &v);
/* FIXME: does this work for properties marked G_PARAM_CONSTRUCT_ONLY?
* */
if ((p->flags & G_PARAM_READABLE) && (p->flags & G_PARAM_WRITABLE)) {
if (!(serialized = gst_value_serialize (&v)))
continue;
g_key_file_set_string (kf, buffer, p->name, serialized);
g_free (serialized);
}
g_value_unset (&v);
}
g_free (properties);
g_object_unref (obj);
cur->data = NULL;
}
g_list_free (objs);
}
if (keyfile_formatter->data) {
g_free (keyfile_formatter->data);
}
keyfile_formatter->data =
g_key_file_to_data (kf, &keyfile_formatter->length, NULL);
g_key_file_free (kf);
return TRUE;
}
static gboolean
create_track (GKeyFile * kf, gchar * group, GESTimeline * timeline)
{
GESTrack *track;
GstCaps *caps;
gchar *caps_field, *type_field;
GValue v = { 0 };
if (!(caps_field = g_key_file_get_string (kf, group, "caps", NULL)))
return FALSE;
caps = gst_caps_from_string (caps_field);
g_free (caps_field);
if (!(type_field = g_key_file_get_value (kf, group, "type", NULL)))
return FALSE;
g_value_init (&v, GES_TYPE_TRACK_TYPE);
gst_value_deserialize (&v, type_field);
g_free (type_field);
if (!caps)
return FALSE;
track = ges_track_new (g_value_get_flags (&v), caps);
if (!ges_timeline_add_track (timeline, track)) {
g_object_unref (track);
return FALSE;
}
return TRUE;
}
static GESTimelineLayer *
create_layer (GKeyFile * kf, gchar * group, GESTimeline * timeline)
{
GESTimelineLayer *ret = NULL;
gchar *type_field, *priority_field;
gboolean is_simple;
guint priority;
if (!(type_field = g_key_file_get_value (kf, group, "type", NULL)))
return FALSE;
is_simple = g_str_equal (type_field, "simple");
g_free (type_field);
if (!(priority_field = g_key_file_get_value (kf, group, "priority", NULL)))
return FALSE;
priority = strtoul (priority_field, NULL, 10);
g_free (priority_field);
if (is_simple) {
GESSimpleTimelineLayer *simple;
simple = ges_simple_timeline_layer_new ();
ret = (GESTimelineLayer *) simple;
} else {
ret = ges_timeline_layer_new ();
}
ges_timeline_layer_set_priority (ret, priority);
if (!ges_timeline_add_layer (timeline, ret)) {
g_object_unref (ret);
ret = NULL;
}
return ret;
}
static gboolean
create_object (GKeyFile * kf, gchar * group, GESTimelineLayer * layer)
{
GType type;
gchar *type_name;
GObject *obj;
GESTimelineObject *timeline_obj;
gchar **keys;
gsize n_keys, i;
GParamSpec *pspec;
GObjectClass *klass;
GParameter *params, *p;
gboolean ret = FALSE;
GST_INFO ("processing '%s'", group);
/* get a reference to the object class */
if (!(type_name = g_key_file_get_value (kf, group, "type", NULL))) {
GST_ERROR ("no type name for object '%s'", group);
return FALSE;
}
if (!(type = g_type_from_name (type_name))) {
GST_ERROR ("invalid type name '%s'", type_name);
goto fail_free_type_name;
}
if (!(klass = g_type_class_ref (type))) {
GST_ERROR ("couldn't get class ref");
goto fail_free_type_name;
}
if (!(keys = g_key_file_get_keys (kf, group, &n_keys, NULL)))
goto fail_unref_class;
/* create an array of parameters for the call to g_new0 */
/* skip first field 'type' */
if (!(params = g_new0 (GParameter, (n_keys - 1)))) {
GST_ERROR ("couldn't allocate parameter list");
goto fail_free_keys;
}
GST_DEBUG ("processing parameter list", group);
for (p = params, i = 1; i < n_keys; i++, p++) {
gchar *value;
gchar *key;
key = keys[i];
GST_DEBUG ("processing key '%s'", key);
/* find the param spec for this property */
if (!(pspec = g_object_class_find_property (klass, key))) {
GST_ERROR ("Object type %s has no property %s", type_name, key);
goto fail_free_params;
}
p->name = key;
g_value_init (&p->value, pspec->value_type);
/* assume this is going to work */
value = g_key_file_get_string (kf, group, key, NULL);
if (!gst_value_deserialize (&p->value, value)) {
GST_ERROR ("Couldn't read property value '%s' for property '%s'",
key, value);
goto fail_free_params;
}
g_free (value);
}
/* create the object from the supplied type name */
if (!(obj = g_object_newv (type, (n_keys - 1), params))) {
GST_ERROR ("couldn't create object");
goto fail_free_type_name;
}
/* check that we have a subclass of GESTimelineObject */
if (!GES_IS_TIMELINE_OBJECT (obj)) {
GST_ERROR ("'%s' is not a subclass of GESTimelineObject!", type_name);
goto fail_unref_obj;
}
timeline_obj = (GESTimelineObject *) obj;
/* add the object to the layer */
if (GES_IS_SIMPLE_TIMELINE_LAYER (layer)) {
if (!ges_simple_timeline_layer_add_object ((GESSimpleTimelineLayer *)
layer, timeline_obj, -1)) {
goto fail_unref_obj;
}
} else {
if (!ges_timeline_layer_add_object (layer, timeline_obj)) {
goto fail_unref_obj;
}
}
ret = TRUE;
fail_unref_obj:
if (!ret)
g_object_unref (obj);
fail_free_params:
for (p = params, i = 1; i < n_keys; i++, p++) {
g_value_unset (&p->value);
}
g_free (params);
fail_free_keys:
g_strfreev (keys);
fail_unref_class:
g_type_class_unref (klass);
fail_free_type_name:
g_free (type_name);
return ret;
}
static gboolean
load_keyfile (GESFormatter * keyfile_formatter, GESTimeline * timeline)
{
GKeyFile *kf;
GError *error = NULL;
gboolean ret = TRUE;
gchar **groups;
gsize n_groups, i;
GESTimelineLayer *cur_layer = NULL;
kf = g_key_file_new ();
if (!g_key_file_load_from_data (kf, keyfile_formatter->data,
keyfile_formatter->length, G_KEY_FILE_NONE, &error)) {
ret = FALSE;
GST_ERROR (error->message);
GST_INFO (keyfile_formatter->data);
goto free_kf;
}
if (!(groups = g_key_file_get_groups (kf, &n_groups))) {
goto free_kf;
}
for (i = 0; i < n_groups; i++) {
gchar *group = groups[i];
if (g_str_has_prefix (group, "Track")) {
if (!create_track (kf, group, timeline)) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_has_prefix (group, "Layer")) {
if (!(cur_layer = create_layer (kf, group, timeline))) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_has_prefix (group, "Object")) {
if (!cur_layer) {
GST_ERROR ("Group %s occurs outside of Layer", group);
ret = FALSE;
break;
}
if (!create_object (kf, group, cur_layer)) {
GST_ERROR ("couldn't create object for %s", group);
ret = FALSE;
break;
}
}
else if (g_str_equal (group, "General")) {
continue;
}
else {
GST_ERROR ("Unrecognized group name %s", group);
ret = FALSE;
break;
}
}
g_strfreev (groups);
free_kf:
g_key_file_free (kf);
return ret;
}

72
ges/ges-keyfile-formatter.h Normal file
View file

@ -0,0 +1,72 @@
/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon.lewis@collabora.co.uk>
* 2010 Nokia Corporation
*
* 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_KEYFILE_FORMATTER
#define _GES_KEYFILE_FORMATTER
#include <glib-object.h>
#include <ges/ges-timeline.h>
#define GES_TYPE_KEYFILE_FORMATTER ges_keyfile_formatter_get_type()
#define GES_KEYFILE_FORMATTER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_KEYFILE_FORMATTER, GESKeyfileFormatter))
#define GES_KEYFILE_FORMATTER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_KEYFILE_FORMATTER, GESKeyfileFormatterClass))
#define GES_IS_KEYFILE_FORMATTER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_KEYFILE_FORMATTER))
#define GES_IS_KEYFILE_FORMATTER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_KEYFILE_FORMATTER))
#define GES_KEYFILE_FORMATTER_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_KEYFILE_FORMATTER, GESKeyfileFormatterClass))
/**
* GESKeyfileFormatter:
* @parent: parent
*
* Serializes a #GESTimeline to a file using #GKeyFile
*/
struct _GESKeyfileFormatter {
GESFormatter parent;
/*< public >*/
};
/**
* GESKeyfileFormatterClass:
* @parent_class: parent class
*/
struct _GESKeyfileFormatterClass {
GESFormatterClass parent_class;
/*< public >*/
};
GType ges_keyfile_formatter_get_type (void);
GESKeyfileFormatter *ges_keyfile_formatter_new (void);
#endif /* _GES_KEYFILE_FORMATTER */

4
ges/ges-types.h
View file

@ -108,4 +108,8 @@ typedef struct _GESTrackTextOverlayClass
typedef struct _GESFormatter GESFormatter;
typedef struct _GESFormatterClass GESFormatterClass;
typedef struct _GESKeyfileFormatter GESKeyfileFormatter;
typedef struct _GESKeyfileFormatterClass GESKeyfileFormatterClass;
#endif /* __GES_TYPES_H__ */

1
ges/ges.h
View file

@ -55,6 +55,7 @@
#include <ges/ges-track-audio-transition.h>
#include <ges/ges-formatter.h>
#include <ges/ges-keyfile-formatter.h>
#include <ges/ges-utils.h>