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gstreamer/subprojects/gst-editing-services/ges/ges-structured-interface.c

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/* GStreamer Editing Services
*
* Copyright (C) <2015> Thibault Saunier <tsaunier@gnome.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ges-structured-interface.h"
#include "ges-internal.h"
#include <string.h>
#define LAST_CONTAINER_QDATA g_quark_from_string("ges-structured-last-container")
#define LAST_CHILD_QDATA g_quark_from_string("ges-structured-last-child")
#ifdef G_HAVE_ISO_VARARGS
#define REPORT_UNLESS(condition, errpoint, ...) \
G_STMT_START { \
if (!(condition)) { \
gchar *tmp = gst_info_strdup_printf(__VA_ARGS__); \
*error = g_error_new_literal (GES_ERROR, 0, tmp); \
g_free (tmp); \
goto errpoint; \
} \
} \
G_STMT_END
#else /* G_HAVE_GNUC_VARARGS */
#ifdef G_HAVE_GNUC_VARARGS
#define REPORT_UNLESS(condition, errpoint, args...) \
G_STMT_START { \
if (!(condition)) { \
gchar *tmp = gst_info_strdup_printf(##args); \
*error = g_error_new_literal (GES_ERROR, 0, tmp); \
g_free (tmp); \
goto errpoint; \
} \
} \
G_STMT_END
#endif /* G_HAVE_ISO_VARARGS */
#endif /* G_HAVE_GNUC_VARARGS */
#define GET_AND_CHECK(name,type,var,label) G_STMT_START {\
gboolean found = FALSE; \
\
if (type == GST_TYPE_CLOCK_TIME) {\
found = ges_util_structure_get_clocktime (structure,name, (GstClockTime*)var,NULL);\
}\
else { \
found = gst_structure_get (structure, name, type, var, NULL); \
}\
if (!found) {\
gchar *struct_str = gst_structure_to_string (structure); \
*error = g_error_new (GES_ERROR, 0, \
"Could not get the mandatory field '%s'" \
" of type %s - fields in %s", name, g_type_name (type), struct_str); \
g_free (struct_str); \
goto label;\
} \
} G_STMT_END
#define TRY_GET_STRING(name,var,def) G_STMT_START {\
*var = gst_structure_get_string (structure, name); \
if (*var == NULL) \
*var = def; \
} G_STMT_END
#define TRY_GET_TIME(name, var, var_frames, def) G_STMT_START { \
if (!ges_util_structure_get_clocktime (structure, name, var, var_frames)) { \
*var = def; \
*var_frames = GES_FRAME_NUMBER_NONE; \
} \
} G_STMT_END
static gboolean
_get_structure_value (GstStructure * structure, const gchar * field, GType type,
gpointer v)
{
gboolean res = TRUE;
const gchar *value_str;
const GValue *value;
GValue nvalue = G_VALUE_INIT;
if (gst_structure_get (structure, field, type, v, NULL))
return res;
g_value_init (&nvalue, type);
value = gst_structure_get_value (structure, field);
if (!value)
goto fail;
if (g_value_transform (value, &nvalue))
goto set_and_get_value;
if (!G_VALUE_HOLDS_STRING (value))
goto fail;
value_str = g_value_get_string (value);
if (!gst_value_deserialize (&nvalue, value_str))
goto done;
set_and_get_value:
gst_structure_set_value (structure, field, &nvalue);
gst_structure_get (structure, field, type, v, NULL);
done:
g_value_reset (&nvalue);
return res;
fail:
res = FALSE;
goto done;
}
#define TRY_GET(name, type, var, def) G_STMT_START {\
g_assert (type != GST_TYPE_CLOCK_TIME); \
if (!_get_structure_value (structure, name, type, var))\
*var = def; \
} G_STMT_END
typedef struct
{
const gchar **fields;
GList *invalid_fields;
} FieldsError;
static gboolean
enum_from_str (GType type, const gchar * str_enum, guint * enum_value)
{
GValue value = G_VALUE_INIT;
g_value_init (&value, type);
if (!gst_value_deserialize (&value, str_enum))
return FALSE;
*enum_value = g_value_get_enum (&value);
g_value_unset (&value);
return TRUE;
}
static gboolean
_check_field (GQuark field_id, const GValue * value, FieldsError * fields_error)
{
guint i;
const gchar *field = g_quark_to_string (field_id);
for (i = 0; fields_error->fields[i]; i++) {
if (g_strcmp0 (fields_error->fields[i], field) == 0) {
return TRUE;
}
}
fields_error->invalid_fields =
g_list_append (fields_error->invalid_fields, (gpointer) field);
return TRUE;
}
static gboolean
_check_fields (GstStructure * structure, FieldsError fields_error,
GError ** error)
{
gst_structure_foreach (structure,
(GstStructureForeachFunc) _check_field, &fields_error);
if (fields_error.invalid_fields) {
GList *tmp;
const gchar *struct_name = gst_structure_get_name (structure);
GString *msg = g_string_new (NULL);
g_string_append_printf (msg, "Unknown propert%s in %s%s:",
g_list_length (fields_error.invalid_fields) > 1 ? "ies" : "y",
strlen (struct_name) > 1 ? "--" : "-",
gst_structure_get_name (structure));
for (tmp = fields_error.invalid_fields; tmp; tmp = tmp->next)
g_string_append_printf (msg, " %s", (gchar *) tmp->data);
if (error)
*error = g_error_new_literal (GES_ERROR, 0, msg->str);
g_list_free (fields_error.invalid_fields);
g_string_free (msg, TRUE);
return FALSE;
}
return TRUE;
}
static GESTimelineElement *
find_element_for_property (GESTimeline * timeline, GstStructure * structure,
gchar ** property_name, gboolean require_track_element, GError ** error)
{
GList *tmp;
const gchar *element_name;
GESTimelineElement *element;
element_name = gst_structure_get_string (structure, "element-name");
if (element_name == NULL) {
element = g_object_get_qdata (G_OBJECT (timeline), LAST_CHILD_QDATA);
if (element)
gst_object_ref (element);
} else {
element = ges_timeline_get_element (timeline, element_name);
}
if (*property_name == NULL) {
gchar *tmpstr = *property_name;
const gchar *name = gst_structure_get_name (structure);
REPORT_UNLESS (g_str_has_prefix (name, "set-"), err,
"Could not find any property name in %" GST_PTR_FORMAT, structure);
*property_name = g_strdup (&tmpstr[4]);
g_free (tmpstr);
}
if (element) {
if (!ges_timeline_element_lookup_child (element,
*property_name, NULL, NULL)) {
gst_clear_object (&element);
}
}
if (!element) {
element = g_object_get_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA);
if (element)
gst_object_ref (element);
}
REPORT_UNLESS (GES_IS_TIMELINE_ELEMENT (element), err,
"Could not find child %s from %" GST_PTR_FORMAT, element_name, structure);
if (!require_track_element || GES_IS_TRACK_ELEMENT (element))
return element;
REPORT_UNLESS (GES_IS_CONTAINER (element), err,
"Could not find child %s from %" GST_PTR_FORMAT, element_name, structure);
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = tmp->next) {
if (ges_timeline_element_lookup_child (tmp->data, *property_name, NULL,
NULL)) {
gst_object_replace ((GstObject **) & element, tmp->data);
break;
}
}
REPORT_UNLESS (GES_IS_TRACK_ELEMENT (element), err,
"Could not find TrackElement from %" GST_PTR_FORMAT, structure);
return element;
err:
g_clear_object (&element);
return element;
}
gboolean
_ges_save_timeline_if_needed (GESTimeline * timeline, GstStructure * structure,
GError ** error)
{
gboolean res = TRUE;
const gchar *nested_timeline_id =
gst_structure_get_string (structure, "project-uri");
if (nested_timeline_id) {
res = ges_timeline_save_to_uri (timeline, nested_timeline_id, NULL, TRUE,
error);
}
return res;
}
typedef struct
{
GstTimedValueControlSource *source;
GstStructure *structure;
GError *error;
const gchar *property_name;
gboolean res;
} SetKeyframesData;
typedef struct
{
gboolean ok;
union
{
struct
{
gdouble v;
} Ok;
struct
{
const gchar *err;
} Err;
};
} ValueToDoubleRes;
static ValueToDoubleRes
value_to_double (const GValue * v)
{
GValue v2 = G_VALUE_INIT;
ValueToDoubleRes res = { 0, };
if (G_VALUE_HOLDS_STRING (v)) {
errno = 0;
res.Ok.v = g_ascii_strtod (g_value_get_string (v), NULL);
if (errno)
res.Err.err = g_strerror (errno);
else
res.ok = TRUE;
return res;
}
g_value_init (&v2, G_TYPE_DOUBLE);
res.ok = g_value_transform (v, &v2);
if (res.ok) {
res.Ok.v = g_value_get_double (&v2);
} else {
res.Err.err = "unsupported conversion";
}
g_value_reset (&v2);
return res;
}
static gboolean
un_set_keyframes_foreach (GQuark field_id, const GValue * value,
SetKeyframesData * d)
{
GError **error = &d->error;
gchar *tmp;
gint i;
const gchar *valid_fields[] = {
"element-name", "property-name", "value", "timestamp", "project-uri",
"binding-type", "source-type", "interpolation-mode", "interpolation-mode",
NULL
};
const gchar *field = g_quark_to_string (field_id);
gdouble ts;
for (i = 0; valid_fields[i]; i++) {
if (g_quark_from_string (valid_fields[i]) == field_id)
return TRUE;
}
errno = 0;
ts = g_strtod (field, &tmp);
REPORT_UNLESS (errno == 0 && field != tmp, err,
"Could not convert `%s` to GstClockTime (%s)", field, g_strerror (errno));
if (gst_structure_has_name (d->structure, "remove-keyframe")) {
REPORT_UNLESS (gst_timed_value_control_source_unset (d->source,
ts * GST_SECOND), err, "Could not unset keyframe at %f", ts);
return TRUE;
}
ValueToDoubleRes res = value_to_double (value);
REPORT_UNLESS (res.ok, err,
"Could not convert keyframe %f value (%s)%s to double (%s)", ts,
G_VALUE_TYPE_NAME (value), gst_value_serialize (value), res.Err.err);
REPORT_UNLESS (gst_timed_value_control_source_set (d->source, ts * GST_SECOND,
res.Ok.v), err, "Could not set keyframe %f=%f", ts, res.Ok.v);
return TRUE;
err:
d->res = FALSE;
return FALSE;
}
gboolean
_ges_add_remove_keyframe_from_struct (GESTimeline * timeline,
GstStructure * structure, GError ** error)
{
GESTimelineElement *element = NULL;
gboolean absolute;
gdouble value;
GstClockTime timestamp;
GstControlBinding *binding = NULL;
GstTimedValueControlSource *source = NULL;
gchar *property_name = NULL;
gboolean ret = FALSE;
gboolean setting_value;
const gchar *valid_fields[] =
{ "element-name", "property-name", "value", "timestamp", "project-uri",
NULL
};
FieldsError fields_error = { valid_fields, NULL };
if (gst_structure_has_field (structure, "value")) {
if (!_check_fields (structure, fields_error, error))
return FALSE;
GET_AND_CHECK ("timestamp", GST_TYPE_CLOCK_TIME, &timestamp, done);
} else {
REPORT_UNLESS (!gst_structure_has_field (structure, "timestamp"), done,
"Doesn't have a `value` field in %" GST_PTR_FORMAT
" but has a `timestamp`" " that can't work!", structure);
}
GET_AND_CHECK ("property-name", G_TYPE_STRING, &property_name, done);
if (!(element =
find_element_for_property (timeline, structure, &property_name, TRUE,
error)))
goto done;
REPORT_UNLESS (binding =
ges_track_element_get_control_binding (GES_TRACK_ELEMENT (element),
property_name),
done, "No control binding found for %" GST_PTR_FORMAT, structure);
g_object_get (binding, "control-source", &source, NULL);
REPORT_UNLESS (source, done,
"No control source found for '%" GST_PTR_FORMAT
"' you should first set-control-binding on it", structure);
REPORT_UNLESS (GST_IS_TIMED_VALUE_CONTROL_SOURCE (source), done,
"You can use add-keyframe"
" only on GstTimedValueControlSource not %s",
G_OBJECT_TYPE_NAME (source));
if (!gst_structure_has_field (structure, "value")) {
SetKeyframesData d = {
source, structure, NULL, property_name, TRUE,
};
gst_structure_foreach (structure,
(GstStructureForeachFunc) un_set_keyframes_foreach, &d);
if (!d.res)
g_propagate_error (error, d.error);
return d.res;
}
g_object_get (binding, "absolute", &absolute, NULL);
if (absolute) {
GParamSpec *pspec;
const GValue *v;
if (!ges_timeline_element_lookup_child (element, property_name, NULL,
&pspec)) {
*error =
g_error_new (GES_ERROR, 0, "Could not get property %s for %s",
property_name, GES_TIMELINE_ELEMENT_NAME (element));
goto done;
}
v = gst_structure_get_value (structure, "value");
if (!v) {
gchar *struct_str = gst_structure_to_string (structure);
*error = g_error_new (GES_ERROR, 0,
"Could not get the mandatory field 'value'"
" of type %s - fields in %s", g_type_name (pspec->value_type),
struct_str);
g_free (struct_str);
goto done;
}
ValueToDoubleRes res = value_to_double (v);
if (!res.ok) {
gchar *struct_str = gst_structure_to_string (structure);
*error = g_error_new (GES_ERROR, 0,
"Could not get the mandatory field 'value'"
" of type %s - fields in %s", g_type_name (pspec->value_type),
struct_str);
g_free (struct_str);
goto done;
}
value = res.Ok.v;
} else {
GET_AND_CHECK ("value", G_TYPE_DOUBLE, &value, done);
}
setting_value =
!g_strcmp0 (gst_structure_get_name (structure), "add-keyframe");
if (setting_value)
ret = gst_timed_value_control_source_set (source, timestamp, value);
else
ret = gst_timed_value_control_source_unset (source, timestamp);
if (!ret) {
*error =
g_error_new (GES_ERROR, 0,
"Could not %sset value for timestamp: %" GST_TIME_FORMAT,
setting_value ? "" : "un", GST_TIME_ARGS (timestamp));
}
ret = _ges_save_timeline_if_needed (timeline, structure, error);
done:
gst_clear_object (&source);
gst_clear_object (&element);
g_free (property_name);
return ret;
}
GESAsset *
_ges_get_asset_from_timeline (GESTimeline * timeline, GType type,
const gchar * id, GError ** error)
{
GESAsset *asset;
GESProject *project = ges_timeline_get_project (timeline);
GError *err = NULL;
asset = ges_project_create_asset_sync (project, id, type, &err);
if (err)
g_propagate_error (error, err);
if (!asset || (error && *error)) {
if (error && !*error) {
*error = g_error_new (GES_ERROR, 0,
"There was an error requesting the asset with id %s and type %s (%s)",
id, g_type_name (type), "unknown");
}
GST_ERROR
("There was an error requesting the asset with id %s and type %s (%s)",
id, g_type_name (type), error ? (*error)->message : "unknown");
return NULL;
}
return asset;
}
/* Unref after usage */
GESLayer *
_ges_get_layer_by_priority (GESTimeline * timeline, gint priority)
{
GList *layers;
gint nlayers;
GESLayer *layer = NULL;
priority = MAX (priority, 0);
layers = ges_timeline_get_layers (timeline);
nlayers = (gint) g_list_length (layers);
if (priority >= nlayers) {
gint i = nlayers;
while (i <= priority) {
layer = ges_timeline_append_layer (timeline);
i++;
}
layer = gst_object_ref (layer);
goto done;
}
layer = ges_timeline_get_layer (timeline, priority);
done:
g_list_free_full (layers, gst_object_unref);
return layer;
}
static gchar *
ensure_uri (gchar * location)
{
if (gst_uri_is_valid (location))
return g_strdup (location);
else
return gst_filename_to_uri (location, NULL);
}
static gboolean
get_flags_from_string (GType type, const gchar * str_flags, guint * flags)
{
GValue value = G_VALUE_INIT;
g_value_init (&value, type);
if (!gst_value_deserialize (&value, str_flags)) {
g_value_unset (&value);
return FALSE;
}
*flags = g_value_get_flags (&value);
g_value_unset (&value);
return TRUE;
}
gboolean
_ges_add_clip_from_struct (GESTimeline * timeline, GstStructure * structure,
GError ** error)
{
GESAsset *asset = NULL;
GESLayer *layer = NULL;
GESClip *clip;
gint layer_priority;
const gchar *name;
const gchar *text;
const gchar *pattern;
const gchar *track_types_str;
const gchar *nested_timeline_id;
gchar *asset_id = NULL;
gchar *check_asset_id = NULL;
const gchar *type_string;
GType type;
gboolean res = FALSE;
GESTrackType track_types = GES_TRACK_TYPE_UNKNOWN;
GESFrameNumber start_frame = GES_FRAME_NUMBER_NONE, inpoint_frame =
GES_FRAME_NUMBER_NONE, duration_frame = GES_FRAME_NUMBER_NONE;
GstClockTime duration = 1 * GST_SECOND, inpoint = 0, start =
GST_CLOCK_TIME_NONE;
const gchar *valid_fields[] =
{ "asset-id", "pattern", "name", "layer-priority", "layer", "type",
"start", "inpoint", "duration", "text", "track-types", "project-uri",
NULL
};
FieldsError fields_error = { valid_fields, NULL };
if (!_check_fields (structure, fields_error, error))
return FALSE;
GET_AND_CHECK ("asset-id", G_TYPE_STRING, &check_asset_id, beach);
TRY_GET_STRING ("pattern", &pattern, NULL);
TRY_GET_STRING ("text", &text, NULL);
TRY_GET_STRING ("name", &name, NULL);
TRY_GET ("layer-priority", G_TYPE_INT, &layer_priority, -1);
if (layer_priority == -1)
TRY_GET ("layer", G_TYPE_INT, &layer_priority, -1);
TRY_GET_STRING ("type", &type_string, "GESUriClip");
TRY_GET_TIME ("start", &start, &start_frame, GST_CLOCK_TIME_NONE);
TRY_GET_TIME ("inpoint", &inpoint, &inpoint_frame, 0);
TRY_GET_TIME ("duration", &duration, &duration_frame, GST_CLOCK_TIME_NONE);
TRY_GET_STRING ("track-types", &track_types_str, NULL);
TRY_GET_STRING ("project-uri", &nested_timeline_id, NULL);
if (track_types_str) {
if (!get_flags_from_string (GES_TYPE_TRACK_TYPE, track_types_str,
&track_types)) {
*error =
g_error_new (GES_ERROR, 0, "Invalid track types: %s",
track_types_str);
}
}
if (!(type = g_type_from_name (type_string))) {
*error = g_error_new (GES_ERROR, 0, "This type doesn't exist : %s",
type_string);
goto beach;
}
if (type == GES_TYPE_URI_CLIP) {
asset_id = ensure_uri (check_asset_id);
} else {
asset_id = g_strdup (check_asset_id);
}
gst_structure_set (structure, "asset-id", G_TYPE_STRING, asset_id, NULL);
asset = _ges_get_asset_from_timeline (timeline, type, asset_id, error);
if (!asset) {
res = FALSE;
goto beach;
}
if (layer_priority == -1) {
GESContainer *container;
container = g_object_get_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA);
if (!container || !GES_IS_CLIP (container))
layer = _ges_get_layer_by_priority (timeline, 0);
else
layer = ges_clip_get_layer (GES_CLIP (container));
if (!layer)
layer = _ges_get_layer_by_priority (timeline, 0);
} else {
layer = _ges_get_layer_by_priority (timeline, layer_priority);
}
if (!layer) {
*error =
g_error_new (GES_ERROR, 0, "No layer with priority %d", layer_priority);
goto beach;
}
if (GES_FRAME_NUMBER_IS_VALID (start_frame))
start = ges_timeline_get_frame_time (timeline, start_frame);
if (GES_FRAME_NUMBER_IS_VALID (inpoint_frame)) {
inpoint =
ges_clip_asset_get_frame_time (GES_CLIP_ASSET (asset), inpoint_frame);
if (!GST_CLOCK_TIME_IS_VALID (inpoint)) {
*error =
g_error_new (GES_ERROR, 0, "Could not get inpoint from frame %"
G_GINT64_FORMAT, inpoint_frame);
goto beach;
}
}
if (GES_FRAME_NUMBER_IS_VALID (duration_frame)) {
duration = ges_timeline_get_frame_time (timeline, duration_frame);
}
if (GES_IS_URI_CLIP_ASSET (asset) && !GST_CLOCK_TIME_IS_VALID (duration)) {
duration = GST_CLOCK_DIFF (inpoint,
ges_uri_clip_asset_get_duration (GES_URI_CLIP_ASSET (asset)));
}
clip = ges_layer_add_asset (layer, asset, start, inpoint, duration,
track_types);
if (clip) {
res = TRUE;
if (GES_TIMELINE_ELEMENT_DURATION (clip) == 0) {
*error = g_error_new (GES_ERROR, 0,
"Clip %s has 0 as duration, please provide a proper duration",
asset_id);
res = FALSE;
goto beach;
}
if (GES_IS_TEST_CLIP (clip)) {
if (pattern) {
guint v;
REPORT_UNLESS (enum_from_str (GES_VIDEO_TEST_PATTERN_TYPE, pattern, &v),
beach, "Invalid pattern: %s", pattern);
ges_test_clip_set_vpattern (GES_TEST_CLIP (clip), v);
}
}
if (GES_IS_TITLE_CLIP (clip) && text)
ges_timeline_element_set_child_properties (GES_TIMELINE_ELEMENT (clip),
"text", text, NULL);
if (name
&& !ges_timeline_element_set_name (GES_TIMELINE_ELEMENT (clip), name)) {
res = FALSE;
*error =
g_error_new (GES_ERROR, 0, "couldn't set name %s on clip with id %s",
name, asset_id);
}
} else {
*error =
g_error_new (GES_ERROR, 0,
"Couldn't add clip with id %s to layer with priority %d", asset_id,
layer_priority);
res = FALSE;
goto beach;
}
if (res) {
g_object_set_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA, clip);
g_object_set_qdata (G_OBJECT (timeline), LAST_CHILD_QDATA, NULL);
}
res = _ges_save_timeline_if_needed (timeline, structure, error);
beach:
gst_clear_object (&layer);
gst_clear_object (&asset);
g_free (asset_id);
g_free (check_asset_id);
return res;
}
gboolean
_ges_add_track_from_struct (GESTimeline * timeline,
GstStructure * structure, GError ** error)
{
const gchar *ttype;
GESTrack *track;
GstCaps *caps;
const gchar *valid_fields[] = { "type", "restrictions", NULL };
FieldsError fields_error = { valid_fields, NULL };
if (!_check_fields (structure, fields_error, error))
return FALSE;
ttype = gst_structure_get_string (structure, "type");
if (!g_strcmp0 (ttype, "video")) {
track = GES_TRACK (ges_video_track_new ());
} else if (!g_strcmp0 (ttype, "audio")) {
track = GES_TRACK (ges_audio_track_new ());
} else {
g_set_error (error, GES_ERROR, 0, "Unhandled track type: `%s`", ttype);
return FALSE;
}
if (gst_structure_has_field (structure, "restrictions")) {
GstStructure *restriction_struct;
gchar *restriction_str;
if (gst_structure_get (structure, "restrictions", GST_TYPE_STRUCTURE,
&restriction_struct, NULL)) {
caps = gst_caps_new_full (restriction_struct, NULL);
} else if (gst_structure_get (structure, "restrictions", G_TYPE_STRING,
&restriction_str, NULL)) {
caps = gst_caps_from_string (restriction_str);
if (!caps) {
g_set_error (error, GES_ERROR, 0, "Invalid restrictions caps: %s",
restriction_str);
g_free (restriction_str);
return FALSE;
}
g_free (restriction_str);
} else if (!gst_structure_get (structure, "restrictions", GST_TYPE_CAPS,
&caps, NULL)) {
gchar *tmp = gst_structure_to_string (structure);
g_set_error (error, GES_ERROR, 0, "Can't use restrictions caps from %s",
tmp);
g_object_unref (track);
return FALSE;
}
ges_track_set_restriction_caps (track, caps);
gst_caps_unref (caps);
}
return ges_timeline_add_track (timeline, track);
}
gboolean
_ges_container_add_child_from_struct (GESTimeline * timeline,
GstStructure * structure, GError ** error)
{
GESAsset *asset = NULL;
GESContainer *container;
GESTimelineElement *child = NULL;
const gchar *container_name, *child_name, *child_type, *id;
gboolean res = TRUE;
const gchar *valid_fields[] = { "container-name", "asset-id", "inpoint",
"child-type", "child-name", "project-uri", NULL
};
FieldsError fields_error = { valid_fields, NULL };
if (!_check_fields (structure, fields_error, error))
return FALSE;
container_name = gst_structure_get_string (structure, "container-name");
if (container_name == NULL) {
container = g_object_get_qdata (G_OBJECT (timeline), LAST_CONTAINER_QDATA);
} else {
container =
GES_CONTAINER (ges_timeline_get_element (timeline, container_name));
}
if (!GES_IS_CONTAINER (container)) {
*error =
g_error_new (GES_ERROR, 0, "Could not find container: %s (%p)",
container_name, container);
res = FALSE;
goto beach;
}
id = gst_structure_get_string (structure, "asset-id");
child_type = gst_structure_get_string (structure, "child-type");
if (id && child_type) {
asset =
_ges_get_asset_from_timeline (timeline, g_type_from_name (child_type),
id, error);
if (asset == NULL) {
res = FALSE;
goto beach;
}
child = GES_TIMELINE_ELEMENT (ges_asset_extract (asset, NULL));
if (!GES_IS_TIMELINE_ELEMENT (child)) {
*error = g_error_new (GES_ERROR, 0, "Could not extract child element");
goto beach;
}
}
child_name = gst_structure_get_string (structure, "child-name");
if (!child && child_name) {
child = ges_timeline_get_element (timeline, child_name);
if (!GES_IS_TIMELINE_ELEMENT (child)) {
*error = g_error_new (GES_ERROR, 0, "Could not find child element");
goto beach;
}
}
if (!child) {
*error =
g_error_new (GES_ERROR, 0, "Wrong parameters, could not get a child");
return FALSE;
}
if (child_name)
ges_timeline_element_set_name (child, child_name);
else
child_name = GES_TIMELINE_ELEMENT_NAME (child);
if (gst_structure_has_field (structure, "inpoint")) {
GstClockTime inpoint;
GESFrameNumber finpoint;
if (!GES_IS_TRACK_ELEMENT (child)) {
*error = g_error_new (GES_ERROR, 0, "Child %s is not a trackelement"
", can't set inpoint.", child_name);
gst_object_unref (child);
goto beach;
}
if (!ges_util_structure_get_clocktime (structure, "inpoint", &inpoint,
&finpoint)) {
*error = g_error_new (GES_ERROR, 0, "Could not use inpoint.");
gst_object_unref (child);
goto beach;
}
if (!ges_track_element_set_has_internal_source (GES_TRACK_ELEMENT (child),
TRUE)) {
*error =
g_error_new (GES_ERROR, 0,
"Could not set inpoint as %s can't have an internal source",
child_name);
gst_object_unref (child);
goto beach;
}
if (GES_FRAME_NUMBER_IS_VALID (finpoint))
inpoint = ges_timeline_get_frame_time (timeline, finpoint);
ges_timeline_element_set_inpoint (child, inpoint);
}
if (GES_IS_CLIP (container) && GES_IS_BASE_EFFECT (child)) {
GList *effects = ges_clip_get_top_effects (GES_CLIP (container));
res =
ges_clip_add_top_effect (GES_CLIP (container), GES_BASE_EFFECT (child),
0, error);
g_list_free_full (effects, gst_object_unref);
} else {
res = ges_container_add (container, child);
}
if (res == FALSE) {
if (!*error)
*error = g_error_new (GES_ERROR, 0, "Could not add child to container");
goto beach;
} else {
g_object_set_qdata (G_OBJECT (timeline), LAST_CHILD_QDATA, child);
}
res = _ges_save_timeline_if_needed (timeline, structure, error);
beach:
gst_clear_object (&asset);
return res;
}
gboolean
_ges_set_child_property_from_struct (GESTimeline * timeline,
GstStructure * structure, GError ** error)
{
const GValue *value;
GValue prop_value = G_VALUE_INIT;
gboolean prop_value_set = FALSE;
gchar *property_name;
GESTimelineElement *element;
gchar *serialized;
gboolean res;
const gchar *valid_fields[] =
{ "element-name", "property", "value", "project-uri", NULL };
FieldsError fields_error = { valid_fields, NULL };
if (!_check_fields (structure, fields_error, error))
return FALSE;
GET_AND_CHECK ("property", G_TYPE_STRING, &property_name, err);
if (!(element =
find_element_for_property (timeline, structure, &property_name, FALSE,
error)))
goto err;
value = gst_structure_get_value (structure, "value");
if (G_VALUE_TYPE (value) == G_TYPE_STRING) {
GParamSpec *pspec;
if (ges_timeline_element_lookup_child (element, property_name, NULL,
&pspec)) {
GType p_type = pspec->value_type;
g_param_spec_unref (pspec);
if (p_type != G_TYPE_STRING) {
const gchar *val_string = g_value_get_string (value);
g_value_init (&prop_value, p_type);
if (!gst_value_deserialize (&prop_value, val_string)) {
*error = g_error_new (GES_ERROR, 0, "Could not set the property %s "
"because the value %s could not be deserialized to the %s type",
property_name, val_string, g_type_name (p_type));
return FALSE;
}
prop_value_set = TRUE;
}
}
/* else, let the setter fail below */
}
if (!prop_value_set) {
g_value_init (&prop_value, G_VALUE_TYPE (value));
g_value_copy (value, &prop_value);
}
serialized = gst_value_serialize (&prop_value);
GST_INFO_OBJECT (element, "Setting property %s to %s\n", property_name,
serialized);
g_free (serialized);
res = ges_timeline_element_set_child_property (element, property_name,
&prop_value);
g_value_unset (&prop_value);
if (!res) {
guint n_specs, i;
GParamSpec **specs =
ges_timeline_element_list_children_properties (element, &n_specs);
GString *errstr = g_string_new (NULL);
g_string_append_printf (errstr,
"\n Could not set property `%s` on `%s`, valid properties:\n",
property_name, GES_TIMELINE_ELEMENT_NAME (element));
for (i = 0; i < n_specs; i++)
g_string_append_printf (errstr, " - %s\n", specs[i]->name);
g_free (specs);
*error = g_error_new_literal (GES_ERROR, 0, errstr->str);
g_string_free (errstr, TRUE);
return FALSE;
}
g_free (property_name);
return _ges_save_timeline_if_needed (timeline, structure, error);
err:
g_free (property_name);
return FALSE;
}
gboolean
_ges_set_control_source_from_struct (GESTimeline * timeline,
GstStructure * structure, GError ** error)
{
guint mode;
gboolean res = FALSE;
GESTimelineElement *element = NULL;
GstControlSource *source = NULL;
gchar *property_name, *binding_type = NULL,
*source_type = NULL, *interpolation_mode = NULL;
GET_AND_CHECK ("property-name", G_TYPE_STRING, &property_name, beach);
if (!(element =
find_element_for_property (timeline, structure, &property_name, TRUE,
error)))
goto beach;
if (GES_IS_CLIP (element)) {
GList *tmp;
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = tmp->next) {
if (ges_timeline_element_lookup_child (tmp->data, property_name, NULL,
NULL)) {
gst_object_replace ((GstObject **) & element, tmp->data);
break;
}
}
}
REPORT_UNLESS (GES_IS_TRACK_ELEMENT (element), beach,
"Could not find TrackElement from %" GST_PTR_FORMAT, structure);
TRY_GET ("binding-type", G_TYPE_STRING, &binding_type, NULL);
TRY_GET ("source-type", G_TYPE_STRING, &source_type, NULL);
TRY_GET ("interpolation-mode", G_TYPE_STRING, &interpolation_mode, NULL);
if (!binding_type)
binding_type = g_strdup ("direct");
REPORT_UNLESS (source_type == NULL
|| !g_strcmp0 (source_type, "interpolation"), beach,
"Interpolation type %s not supported", source_type);
source = gst_interpolation_control_source_new ();
if (interpolation_mode)
REPORT_UNLESS (enum_from_str (GST_TYPE_INTERPOLATION_MODE,
interpolation_mode, &mode), beach,
"Wrong interpolation mode: %s", interpolation_mode);
else
mode = GST_INTERPOLATION_MODE_LINEAR;
g_object_set (source, "mode", mode, NULL);
res = ges_track_element_set_control_source (GES_TRACK_ELEMENT (element),
source, property_name, binding_type);
beach:
gst_clear_object (&element);
gst_clear_object (&source);
g_free (property_name);
g_free (binding_type);
g_free (source_type);
g_free (interpolation_mode);
return res;
}
#undef GET_AND_CHECK
#undef TRY_GET
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