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gstreamer/ges/ges-pitivi-formatter.c

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/* GStreamer Editing Services Pitivi Formatter
* Copyright (C) 2011-2012 Mathieu Duponchelle <seeed@laposte.net>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION: ges-pitivi-formatter
* @short_description: A formatter for the PiTiVi project file format
*/
#include <libxml/xmlreader.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include "libxml/encoding.h"
#include "libxml/xmlwriter.h"
#include "ges-internal.h"
#include <ges/ges.h>
#include <inttypes.h>
#include <unistd.h>
#define GetCurrentDir getcwd
/* The PiTiVi etree formatter is 0.1 we set GES one to 0.2 */
#define VERSION "0.2"
#define DOUBLE_VERSION 0.2
G_DEFINE_TYPE (GESPitiviFormatter, ges_pitivi_formatter, GES_TYPE_FORMATTER);
#undef GST_CAT_DEFAULT
GST_DEBUG_CATEGORY_STATIC (ges_pitivi_formatter_debug);
#define GST_CAT_DEFAULT ges_pitivi_formatter_debug
typedef struct SrcMapping
{
gchar *id;
GESClip *clip;
guint priority;
GList *track_element_ids;
} SrcMapping;
struct _GESPitiviFormatterPrivate
{
xmlXPathContextPtr xpathCtx;
/* {"sourceId" : {"prop": "value"}} */
GHashTable *sources_table;
/* Used as a set of the uris */
GHashTable *source_uris;
/* {trackId: {"factory_ref": factoryId, ""}
* if effect:
* {"factory_ref": "effect",
* "effect_name": name
* "effect_props": {"propname": value}}}
*/
GHashTable *track_elements_table;
/* {factory-ref: [track-object-ref-id,...]} */
GHashTable *clips_table;
/* {layerPriority: layer} */
GHashTable *layers_table;
GESTimeline *timeline;
GESTrack *tracka, *trackv;
/* List the Clip that haven't been loaded yet */
GList *sources_to_load;
/* Saving context */
/* {factory_id: uri} */
GHashTable *saving_source_table;
guint nb_sources;
};
/* Memory freeing functions */
static void
free_src_map (SrcMapping * srcmap)
{
g_free (srcmap->id);
gst_object_unref (srcmap->clip);
g_list_foreach (srcmap->track_element_ids, (GFunc) g_free, NULL);
g_list_free (srcmap->track_element_ids);
g_slice_free (SrcMapping, srcmap);
}
static void
list_table_destroyer (gpointer key, gpointer value, void *unused)
{
g_list_foreach (value, (GFunc) g_free, NULL);
g_list_free (value);
}
static gboolean
pitivi_can_load_uri (GESFormatterClass * class, const gchar * uri,
GError ** error)
{
xmlDocPtr doc;
gboolean ret = TRUE;
xmlXPathObjectPtr xpathObj;
xmlXPathContextPtr xpathCtx;
if (!(doc = xmlParseFile (uri))) {
GST_ERROR ("The xptv file for uri %s was badly formed or did not exist",
uri);
return FALSE;
}
xpathCtx = xmlXPathNewContext (doc);
xpathObj = xmlXPathEvalExpression ((const xmlChar *) "/pitivi", xpathCtx);
if (!xpathObj || !xpathObj->nodesetval || xpathObj->nodesetval->nodeNr == 0)
ret = FALSE;
xmlFreeDoc (doc);
xmlXPathFreeObject (xpathObj);
xmlXPathFreeContext (xpathCtx);
return ret;
}
/* Project saving functions */
static void inline
write_int_attribute (xmlTextWriterPtr writer, guint64 nb, const gchar * attr,
const gchar * type)
{
gchar *str = g_strdup_printf ("%s%" PRIu64, type, nb);
xmlTextWriterWriteAttribute (writer, BAD_CAST attr, BAD_CAST str);
g_free (str);
}
static void
save_track_elements (xmlTextWriterPtr writer, GList * source_list,
GESTrackType type, gint * id)
{
GList *tmp, *tmp_tck;
gchar *bin_desc;
xmlTextWriterStartElement (writer, BAD_CAST "track-objects");
GST_DEBUG ("Saving track elements");
for (tmp = source_list; tmp; tmp = tmp->next) {
SrcMapping *srcmap;
GESClip *clip;
guint i, j;
guint64 inpoint, duration, start;
srcmap = (SrcMapping *) tmp->data;
clip = srcmap->clip;
/* Save track associated objects */
for (tmp_tck = GES_CONTAINER_CHILDREN (clip); tmp_tck;
tmp_tck = tmp_tck->next) {
xmlChar *cast;
GESTrackElement *trackelement = GES_TRACK_ELEMENT (tmp_tck->data);
GESTrack *track = ges_track_element_get_track (trackelement);
const gchar *active, *locked;
if (!track) {
GST_WARNING ("Track element %p not in a track yet", trackelement);
continue;
}
/* We are serializing this track type */
if (track->type != type)
continue;
/* Save properties */
/* Set important properties */
xmlTextWriterStartElement (writer, BAD_CAST "track-object");
active =
ges_track_element_is_active (trackelement) ? "(bool)True" :
"(bool)False";
xmlTextWriterWriteAttribute (writer, BAD_CAST "active", BAD_CAST active);
locked =
ges_track_element_is_locked (trackelement) ? "(bool)True" :
"(bool)False";
xmlTextWriterWriteAttribute (writer, BAD_CAST "locked", BAD_CAST locked);
/* Here the priority correspond to the layer priority */
write_int_attribute (writer, srcmap->priority, "priority", "(int)");
g_object_get (G_OBJECT (trackelement), "duration", &duration, "start",
&start, "in-point", &inpoint, NULL);
write_int_attribute (writer, duration, "duration", "(gint64)");
write_int_attribute (writer, start, "start", "(gint64)");
write_int_attribute (writer, inpoint, "in_point", "(gint64)");
cast = xmlXPathCastNumberToString (*id);
xmlTextWriterWriteAttribute (writer, BAD_CAST "id", BAD_CAST cast);
xmlFree (cast);
if (GES_IS_BASE_EFFECT (trackelement)) {
GParamSpec **pspecs, *spec;
gchar *serialized, *concatenated;
guint n_props = 0;
xmlTextWriterWriteAttribute (writer, BAD_CAST "type",
BAD_CAST "pitivi.timeline.track.TrackEffect");
g_object_get (trackelement, "bin-description", &bin_desc, NULL);
xmlTextWriterStartElement (writer, BAD_CAST "effect");
xmlTextWriterStartElement (writer, BAD_CAST "factory");
xmlTextWriterWriteAttribute (writer, BAD_CAST "name",
BAD_CAST bin_desc);
xmlTextWriterEndElement (writer);
xmlTextWriterStartElement (writer, BAD_CAST "gst-element-properties");
pspecs =
ges_track_element_list_children_properties (trackelement, &n_props);
j = 0;
while (j < n_props) {
GValue val = { 0 };
spec = pspecs[j];
g_value_init (&val, spec->value_type);
ges_track_element_get_child_property_by_pspec (trackelement, spec,
&val);
serialized = gst_value_serialize (&val);
if (!g_strcmp0 (spec->name, (gchar *) "preset")) {
concatenated =
g_strconcat ("(GEnum)",
xmlXPathCastNumberToString ((g_value_get_enum (&val))), NULL);
xmlTextWriterWriteAttribute (writer, BAD_CAST spec->name,
BAD_CAST concatenated);
} else {
concatenated =
g_strconcat ("(", g_type_name (spec->value_type), ")",
serialized, NULL);
xmlTextWriterWriteAttribute (writer, BAD_CAST spec->name,
BAD_CAST concatenated);
}
j++;
}
xmlTextWriterEndElement (writer);
for (i = 0; i < n_props; i++) {
g_param_spec_unref (pspecs[i]);
}
g_free (pspecs);
} else {
xmlTextWriterWriteAttribute (writer, BAD_CAST "type",
BAD_CAST "pitivi.timeline.track.SourceTrackObject");
xmlTextWriterStartElement (writer, BAD_CAST "factory-ref");
xmlTextWriterWriteAttribute (writer, BAD_CAST "id",
BAD_CAST srcmap->id);
}
xmlTextWriterEndElement (writer);
xmlTextWriterEndElement (writer);
/* We add effects at the end of the trackelement list */
if (GES_IS_BASE_EFFECT (trackelement)) {
srcmap->track_element_ids = g_list_append (srcmap->track_element_ids,
xmlXPathCastNumberToString (*id));
} else {
srcmap->track_element_ids = g_list_prepend (srcmap->track_element_ids,
xmlXPathCastNumberToString (*id));
}
*id = *id + 1;
}
}
xmlTextWriterEndElement (writer);
}
static void
save_tracks (GESTimeline * timeline, xmlTextWriterPtr writer,
GList * source_list)
{
GList *tracks, *tmp;
gint id = 0;
xmlTextWriterStartElement (writer, BAD_CAST "timeline");
xmlTextWriterStartElement (writer, BAD_CAST "tracks");
GST_DEBUG ("Saving tracks");
tracks = ges_timeline_get_tracks (timeline);
for (tmp = tracks; tmp; tmp = tmp->next) {
gchar *caps;
GESTrackType type;
GESTrack *track = GES_TRACK (tmp->data);
xmlTextWriterStartElement (writer, BAD_CAST "track");
xmlTextWriterStartElement (writer, BAD_CAST "stream");
/* Serialize track type and caps */
g_object_get (G_OBJECT (track), "track-type", &type, NULL);
caps = gst_caps_to_string (ges_track_get_caps (track));
xmlTextWriterWriteAttribute (writer, BAD_CAST "caps", BAD_CAST caps);
g_free (caps);
if (type == GES_TRACK_TYPE_AUDIO) {
xmlTextWriterWriteAttribute (writer, BAD_CAST "type",
BAD_CAST "pitivi.stream.AudioStream");
xmlTextWriterEndElement (writer);
} else if (type == GES_TRACK_TYPE_VIDEO) {
xmlTextWriterWriteAttribute (writer, BAD_CAST "type",
BAD_CAST "pitivi.stream.VideoStream");
xmlTextWriterEndElement (writer);
} else {
GST_WARNING ("Track type %i not supported", type);
continue;
}
save_track_elements (writer, source_list, type, &id);
xmlTextWriterEndElement (writer);
}
g_list_foreach (tracks, (GFunc) gst_object_unref, NULL);
g_list_free (tracks);
xmlTextWriterEndElement (writer);
}
static void
write_source (gchar * uri, gchar * id, xmlTextWriterPtr writer)
{
xmlTextWriterStartElement (writer, BAD_CAST "source");
xmlTextWriterWriteAttribute (writer, BAD_CAST "filename", BAD_CAST uri);
xmlTextWriterWriteAttribute (writer, BAD_CAST "id", BAD_CAST id);
xmlTextWriterEndElement (writer);
}
static GList *
save_sources (GESPitiviFormatter * formatter, GList * layers,
xmlTextWriterPtr writer)
{
GList *clips, *tmp, *tmplayer;
GESTimelineLayer *layer;
GESPitiviFormatterPrivate *priv = formatter->priv;
GList *source_list = NULL;
GST_DEBUG ("Saving sources");
g_hash_table_foreach (priv->saving_source_table, (GHFunc) write_source,
writer);
for (tmplayer = layers; tmplayer; tmplayer = tmplayer->next) {
layer = GES_TIMELINE_LAYER (tmplayer->data);
clips = ges_timeline_layer_get_clips (layer);
for (tmp = clips; tmp; tmp = tmp->next) {
SrcMapping *srcmap = g_slice_new0 (SrcMapping);
GESClip *clip;
gchar *uriclip_uri;
clip = tmp->data;
if (GES_IS_URI_CLIP (clip)) {
uriclip_uri = (gchar *) ges_uri_clip_get_uri (GES_URI_CLIP (clip));
if (!g_hash_table_lookup (priv->saving_source_table, uriclip_uri)) {
gchar *strid = g_strdup_printf ("%i", priv->nb_sources);
g_hash_table_insert (priv->saving_source_table,
g_strdup (uriclip_uri), strid);
write_source (uriclip_uri, strid, writer);
priv->nb_sources++;
}
srcmap->id =
g_strdup (g_hash_table_lookup (priv->saving_source_table,
uriclip_uri));
srcmap->clip = gst_object_ref (clip);
srcmap->priority = ges_timeline_layer_get_priority (layer);
/* We fill up the track_element_ids in save_track_elements */
source_list = g_list_append (source_list, srcmap);
}
}
g_list_foreach (clips, (GFunc) gst_object_unref, NULL);
g_list_free (clips);
gst_object_unref (G_OBJECT (layer));
}
return source_list;
}
static void
save_clips (xmlTextWriterPtr writer, GList * list)
{
GList *tmp, *track_element_ids;
xmlTextWriterStartElement (writer, BAD_CAST "timeline-objects");
GST_DEBUG ("Saving clips");
for (tmp = list; tmp; tmp = tmp->next) {
SrcMapping *srcmap = (SrcMapping *) tmp->data;
xmlTextWriterStartElement (writer, BAD_CAST "timeline-object");
xmlTextWriterStartElement (writer, BAD_CAST "factory-ref");
xmlTextWriterWriteAttribute (writer, BAD_CAST "id", BAD_CAST srcmap->id);
xmlTextWriterEndElement (writer);
xmlTextWriterStartElement (writer, BAD_CAST "track-object-refs");
for (track_element_ids = srcmap->track_element_ids; track_element_ids;
track_element_ids = track_element_ids->next) {
xmlTextWriterStartElement (writer, BAD_CAST "track-object-ref");
xmlTextWriterWriteAttribute (writer, BAD_CAST "id",
BAD_CAST track_element_ids->data);
xmlTextWriterEndElement (writer);
}
xmlTextWriterEndElement (writer);
xmlTextWriterEndElement (writer);
}
xmlTextWriterEndElement (writer);
}
static gboolean
save_pitivi_timeline_to_uri (GESFormatter * formatter,
GESTimeline * timeline, const gchar * uri, gboolean overwrite,
GError ** error)
{
xmlTextWriterPtr writer;
GList *list = NULL, *layers = NULL;
writer = xmlNewTextWriterFilename (uri, 0);
xmlTextWriterSetIndent (writer, 1);
xmlTextWriterStartElement (writer, BAD_CAST "pitivi");
xmlTextWriterWriteAttribute (writer, BAD_CAST "formatter", BAD_CAST "GES");
/* */
xmlTextWriterWriteAttribute (writer, BAD_CAST "version", BAD_CAST VERSION);
xmlTextWriterStartElement (writer, BAD_CAST "factories");
xmlTextWriterStartElement (writer, BAD_CAST "sources");
layers = ges_timeline_get_layers (timeline);
list = save_sources (GES_PITIVI_FORMATTER (formatter), layers, writer);
xmlTextWriterEndElement (writer);
xmlTextWriterEndElement (writer);
save_tracks (timeline, writer, list);
save_clips (writer, list);
xmlTextWriterEndDocument (writer);
xmlFreeTextWriter (writer);
g_list_free (layers);
g_list_foreach (list, (GFunc) free_src_map, NULL);
g_list_free (list);
return TRUE;
}
/* Project loading functions */
/* Return: a GHashTable containing:
* {attr: value}
*/
static GHashTable *
get_nodes_infos (xmlNodePtr node)
{
xmlAttr *cur_attr;
GHashTable *props_table;
gchar *name, *value;
props_table = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, NULL);
for (cur_attr = node->properties; cur_attr; cur_attr = cur_attr->next) {
name = (gchar *) cur_attr->name;
value = (gchar *) xmlGetProp (node, cur_attr->name);
g_hash_table_insert (props_table, g_strdup (name), g_strdup (value));
xmlFree (value);
}
return props_table;
}
static gboolean
create_tracks (GESFormatter * self)
{
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
GList *tracks = NULL;
tracks = ges_timeline_get_tracks (self->timeline);
GST_DEBUG ("Creating tracks, current number of tracks %d",
g_list_length (tracks));
if (tracks) {
GList *tmp = NULL;
GESTrack *track;
for (tmp = tracks; tmp; tmp = tmp->next) {
track = tmp->data;
if (track->type == GES_TRACK_TYPE_AUDIO) {
priv->tracka = track;
} else {
priv->trackv = track;
}
}
g_list_foreach (tracks, (GFunc) gst_object_unref, NULL);
g_list_free (tracks);
return TRUE;
}
priv->tracka = ges_track_audio_raw_new ();
priv->trackv = ges_track_video_raw_new ();
if (!ges_timeline_add_track (self->timeline, priv->trackv)) {
return FALSE;
}
if (!ges_timeline_add_track (self->timeline, priv->tracka)) {
return FALSE;
}
return TRUE;
}
static void
parse_metadatas (GESFormatter * self)
{
guint i, size;
xmlNodePtr node;
xmlAttr *cur_attr;
xmlNodeSetPtr nodes;
xmlXPathObjectPtr xpathObj;
GESMetaContainer *metacontainer = GES_META_CONTAINER (self->project);
xpathObj = xmlXPathEvalExpression ((const xmlChar *)
"/pitivi/metadata", GES_PITIVI_FORMATTER (self)->priv->xpathCtx);
nodes = xpathObj->nodesetval;
size = (nodes) ? nodes->nodeNr : 0;
for (i = 0; i < size; i++) {
node = nodes->nodeTab[i];
for (cur_attr = node->properties; cur_attr; cur_attr = cur_attr->next) {
ges_meta_container_set_string (metacontainer, (gchar *) cur_attr->name,
(gchar *) xmlGetProp (node, cur_attr->name));
}
}
}
static void
list_sources (GESFormatter * self)
{
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
xmlXPathObjectPtr xpathObj;
GHashTable *table;
int size, j;
gchar *id, *filename;
xmlNodeSetPtr nodes;
xpathObj = xmlXPathEvalExpression ((const xmlChar *)
"/pitivi/factories/sources/source", priv->xpathCtx);
nodes = xpathObj->nodesetval;
size = (nodes) ? nodes->nodeNr : 0;
for (j = 0; j < size; ++j) {
table = get_nodes_infos (nodes->nodeTab[j]);
id = (gchar *) g_hash_table_lookup (table, (gchar *) "id");
filename = (gchar *) g_hash_table_lookup (table, (gchar *) "filename");
g_hash_table_insert (priv->sources_table, g_strdup (id), table);
g_hash_table_insert (priv->source_uris, g_strdup (filename),
g_strdup (filename));
if (self->project)
ges_project_create_asset (self->project, filename, GES_TYPE_URI_CLIP);
}
xmlXPathFreeObject (xpathObj);
}
static gboolean
parse_track_elements (GESFormatter * self)
{
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
xmlXPathObjectPtr xpathObj;
xmlNodeSetPtr nodes;
int size, j;
gchar *id, *fac_ref;
GHashTable *table = NULL, *effect_table = NULL;
xmlNode *first_child;
gchar *media_type;
/* FIXME Make this whole function cleaner starting from
* "/pitivi/timeline/tracks/track/stream" and descending
* into the children. */
xpathObj = xmlXPathEvalExpression ((const xmlChar *)
"/pitivi/timeline/tracks/track/track-objects/track-object",
priv->xpathCtx);
if (xpathObj == NULL) {
GST_DEBUG ("No track object found");
return FALSE;
}
nodes = xpathObj->nodesetval;
size = (nodes) ? nodes->nodeNr : 0;
for (j = 0; j < size; ++j) {
xmlNodePtr node = nodes->nodeTab[j];
table = get_nodes_infos (nodes->nodeTab[j]);
id = (gchar *) g_hash_table_lookup (table, (gchar *) "id");
first_child = nodes->nodeTab[j]->children->next;
fac_ref = (gchar *) xmlGetProp (first_child, (xmlChar *) "id");
/* We check if the first child is "effect" */
if (!g_strcmp0 ((gchar *) first_child->name, (gchar *) "effect")) {
xmlChar *effect_name;
xmlNodePtr fact_node = first_child->children->next;
/* We have a node called "text" in between thus ->next->next */
xmlNodePtr elem_props_node = fact_node->next->next;
effect_name = xmlGetProp (fact_node, (xmlChar *) "name");
g_hash_table_insert (table, g_strdup ((gchar *) "effect_name"),
g_strdup ((gchar *) effect_name));
xmlFree (effect_name);
/* We put the effects properties in an hacktable (Lapsus is on :) */
effect_table = get_nodes_infos (elem_props_node);
g_hash_table_insert (table, g_strdup ((gchar *) "fac_ref"),
g_strdup ("effect"));
xmlFree (fac_ref);
} else {
g_hash_table_insert (table, g_strdup ((gchar *) "fac_ref"),
g_strdup (fac_ref));
xmlFree (fac_ref);
}
/* Same as before, we got a text node in between, thus the 2 prev
* node->parent is <track-objects>, the one before is <stream>
*/
media_type = (gchar *) xmlGetProp (node->parent->prev->prev,
(const xmlChar *) "type");
g_hash_table_insert (table, g_strdup ((gchar *) "media_type"),
g_strdup (media_type));
xmlFree (media_type);
if (effect_table)
g_hash_table_insert (table, g_strdup ("effect_props"), effect_table);
g_hash_table_insert (priv->track_elements_table, g_strdup (id), table);
}
xmlXPathFreeObject (xpathObj);
return TRUE;
}
static gboolean
parse_clips (GESFormatter * self)
{
int size, j;
xmlNodeSetPtr nodes;
xmlXPathObjectPtr xpathObj;
xmlNodePtr clip_nd, tmp_nd, tmp_nd2;
xmlChar *trackelementrefId, *facrefId = NULL;
GList *reflist = NULL;
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
GHashTable *clips_table = priv->clips_table;
xpathObj = xmlXPathEvalExpression ((const xmlChar *)
"/pitivi/timeline/timeline-objects/timeline-object", priv->xpathCtx);
if (xpathObj == NULL) {
xmlXPathFreeObject (xpathObj);
return FALSE;
}
nodes = xpathObj->nodesetval;
size = (nodes) ? nodes->nodeNr : 0;
for (j = 0; j < size; j++) {
clip_nd = nodes->nodeTab[j];
for (tmp_nd = clip_nd->children; tmp_nd; tmp_nd = tmp_nd->next) {
/* We assume that factory-ref is always before the tckobjs-ref */
if (!xmlStrcmp (tmp_nd->name, (xmlChar *) "factory-ref")) {
facrefId = xmlGetProp (tmp_nd, (xmlChar *) "id");
} else if (!xmlStrcmp (tmp_nd->name, (xmlChar *) "track-object-refs")) {
for (tmp_nd2 = tmp_nd->children; tmp_nd2; tmp_nd2 = tmp_nd2->next) {
if (!xmlStrcmp (tmp_nd2->name, (xmlChar *) "track-object-ref")) {
/* We add the track object ref ID to the list of the current
* Clip tracks, this way we can merge 2
* Clip-s into 1 when we have unlinked TrackElement-s */
reflist = g_hash_table_lookup (clips_table, facrefId);
trackelementrefId = xmlGetProp (tmp_nd2, (xmlChar *) "id");
reflist =
g_list_append (reflist, g_strdup ((gchar *) trackelementrefId));
g_hash_table_insert (clips_table, g_strdup ((gchar *) facrefId),
reflist);
xmlFree (trackelementrefId);
}
}
}
}
}
xmlXPathFreeObject (xpathObj);
return TRUE;
}
static void
set_properties (GObject * obj, GHashTable * props_table)
{
gint i;
gchar **prop_array, *valuestr;
gint64 value;
gchar props[3][10] = { "duration", "in_point", "start" };
for (i = 0; i < 3; i++) {
valuestr = g_hash_table_lookup (props_table, props[i]);
prop_array = g_strsplit (valuestr, ")", 0);
value = g_ascii_strtoll (prop_array[1], NULL, 0);
g_object_set (obj, props[i], value, NULL);
g_strfreev (prop_array);
}
}
static void
track_element_added_cb (GESClip * clip,
GESTrackElement * track_element, GHashTable * props_table)
{
gchar *media_type = NULL, *lockedstr;
GList *tmp = NULL;
GESTrack *track;
gint64 start, duration;
gboolean has_effect = FALSE, locked = TRUE;
gint type = 0;
GESPitiviFormatter *formatter;
media_type = (gchar *) g_hash_table_lookup (props_table, "media_type");
lockedstr = (gchar *) g_hash_table_lookup (props_table, "locked");
formatter = GES_PITIVI_FORMATTER (g_hash_table_lookup (props_table,
"current-formatter"));
if (formatter) {
GESPitiviFormatterPrivate *priv = formatter->priv;
/* Make sure the hack to get a ref to the formatter
* doesn't break everything */
g_hash_table_steal (props_table, "current-formatter");
priv->sources_to_load = g_list_remove (priv->sources_to_load, clip);
if (!priv->sources_to_load && GES_FORMATTER (formatter)->project)
ges_project_set_loaded (GES_FORMATTER (formatter)->project,
GES_FORMATTER (formatter));
}
if (lockedstr && !g_strcmp0 (lockedstr, "(bool)False"))
locked = FALSE;
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = tmp->next) {
if (!GES_IS_TRACK_ELEMENT (tmp->data)) {
/* If we arrive here something massively screwed */
GST_ERROR ("Not a TrackElement, this is a bug");
continue;
}
track = ges_track_element_get_track (tmp->data);
if (!track) {
GST_WARNING ("TrackElement not in a track yet");
continue;
}
if (GES_IS_EFFECT (tmp->data)) {
has_effect = TRUE;
continue;
}
if ((!g_strcmp0 (media_type, "pitivi.stream.VideoStream")
&& track->type == GES_TRACK_TYPE_VIDEO)
|| (!g_strcmp0 (media_type, "pitivi.stream.AudioStream")
&& track->type == GES_TRACK_TYPE_AUDIO)) {
/* We unlock the track element so we do not move the whole Clip */
ges_track_element_set_locked (tmp->data, FALSE);
set_properties (G_OBJECT (tmp->data), props_table);
if (locked)
ges_track_element_set_locked (tmp->data, TRUE);
type = track->type;
g_object_get (tmp->data, "start", &start, "duration", &duration, NULL);
}
}
if (has_effect) {
/* FIXME make sure this is the way we want to handle that
* ie: set duration and start as the other trackelement
* and no let full control to the user. */
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = tmp->next) {
/* We set the effects start and duration */
track = ges_track_element_get_track (tmp->data);
if (GES_IS_EFFECT (tmp->data)
&& (type == track->type)) {
/* We lock the track elements so we do not move the whole Clip */
ges_track_element_set_locked (tmp->data, FALSE);
g_object_set (tmp->data, "start", start, "duration", duration, NULL);
if (locked)
ges_track_element_set_locked (tmp->data, TRUE);
}
}
}
/* Disconnect the signal */
g_signal_handlers_disconnect_by_func (clip, track_element_added_cb,
props_table);
}
static void
make_source (GESFormatter * self, GList * reflist, GHashTable * source_table)
{
GHashTable *props_table, *effect_table;
gchar **prio_array;
GESTimelineLayer *layer;
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
gchar *fac_ref = NULL, *media_type = NULL, *filename = NULL, *prio_str;
GList *tmp = NULL, *keys, *tmp_key;
GESUriClip *src = NULL;
gint prio;
gboolean a_avail = FALSE, v_avail = FALSE, video;
GHashTable *trackelement_table = priv->track_elements_table;
for (tmp = reflist; tmp; tmp = tmp->next) {
/* Get the layer */
props_table = g_hash_table_lookup (trackelement_table, (gchar *) tmp->data);
prio_str = (gchar *) g_hash_table_lookup (props_table, "priority");
prio_array = g_strsplit (prio_str, ")", 0);
prio = (gint) g_ascii_strtod (prio_array[1], NULL);
g_strfreev (prio_array);
/* If we do not have any layer with this priority, create it */
if (!(layer = g_hash_table_lookup (priv->layers_table, &prio))) {
layer = ges_timeline_layer_new ();
g_object_set (layer, "auto-transition", TRUE, "priority", prio, NULL);
ges_timeline_add_layer (self->timeline, layer);
g_hash_table_insert (priv->layers_table, g_memdup (&prio,
sizeof (guint64)), layer);
}
fac_ref = (gchar *) g_hash_table_lookup (props_table, "fac_ref");
media_type = (gchar *) g_hash_table_lookup (props_table, "media_type");
if (!g_strcmp0 (media_type, "pitivi.stream.VideoStream"))
video = TRUE;
else
video = FALSE;
/* FIXME I am sure we could reimplement this whole part
* in a simpler way */
if (g_strcmp0 (fac_ref, (gchar *) "effect")) {
/* FIXME this is a hack to get a ref to the formatter when receiving
* child-added */
g_hash_table_insert (props_table, (gchar *) "current-formatter", self);
if (a_avail && (!video)) {
a_avail = FALSE;
} else if (v_avail && (video)) {
v_avail = FALSE;
} else {
/* If we only have audio or only video in the previous source,
* set it has such */
if (a_avail) {
ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_VIDEO);
} else if (v_avail) {
ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_AUDIO);
}
filename = (gchar *) g_hash_table_lookup (source_table, "filename");
src = ges_uri_clip_new (filename);
if (!video) {
v_avail = TRUE;
a_avail = FALSE;
} else {
a_avail = TRUE;
v_avail = FALSE;
}
set_properties (G_OBJECT (src), props_table);
ges_timeline_layer_add_clip (layer, GES_CLIP (src));
g_signal_connect (src, "child-added",
G_CALLBACK (track_element_added_cb), props_table);
priv->sources_to_load = g_list_prepend (priv->sources_to_load, src);
}
} else {
GESEffect *effect;
gchar *active = (gchar *) g_hash_table_lookup (props_table, "active");
effect = ges_effect_new ((gchar *)
g_hash_table_lookup (props_table, (gchar *) "effect_name"));
ges_track_element_set_track_type (GES_TRACK_ELEMENT (effect),
(video ? GES_TRACK_TYPE_VIDEO : GES_TRACK_TYPE_AUDIO));
effect_table =
g_hash_table_lookup (props_table, (gchar *) "effect_props");
ges_container_add (GES_CONTAINER (src), GES_TIMELINE_ELEMENT (effect));
if (!g_strcmp0 (active, (gchar *) "(bool)False"))
ges_track_element_set_active (GES_TRACK_ELEMENT (effect), FALSE);
/* Set effect properties */
keys = g_hash_table_get_keys (effect_table);
for (tmp_key = keys; tmp_key; tmp_key = tmp_key->next) {
GstStructure *structure;
const GValue *value;
GParamSpec *spec;
GstCaps *caps;
gchar *prop_val;
prop_val = (gchar *) g_hash_table_lookup (effect_table,
(gchar *) tmp_key->data);
if (g_strstr_len (prop_val, -1, "(GEnum)")) {
gchar **val = g_strsplit (prop_val, ")", 2);
ges_track_element_set_child_properties (GES_TRACK_ELEMENT (effect),
(gchar *) tmp_key->data, atoi (val[1]), NULL);
g_strfreev (val);
} else if (ges_track_element_lookup_child (GES_TRACK_ELEMENT (effect),
(gchar *) tmp->data, NULL, &spec)) {
gchar *caps_str = g_strdup_printf ("structure1, property1=%s;",
prop_val);
caps = gst_caps_from_string (caps_str);
g_free (caps_str);
structure = gst_caps_get_structure (caps, 0);
value = gst_structure_get_value (structure, "property1");
ges_track_element_set_child_property_by_pspec (GES_TRACK_ELEMENT
(effect), spec, (GValue *) value);
gst_caps_unref (caps);
}
}
}
}
if (a_avail) {
ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_VIDEO);
} else if (v_avail) {
ges_clip_set_supported_formats (GES_CLIP (src), GES_TRACK_TYPE_AUDIO);
}
}
static gboolean
make_clips (GESFormatter * self)
{
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
GHashTable *source_table;
GList *keys = NULL, *tmp = NULL, *reflist = NULL;
keys = g_hash_table_get_keys (priv->clips_table);
for (tmp = keys; tmp; tmp = tmp->next) {
gchar *fac_id = (gchar *) tmp->data;
reflist = g_hash_table_lookup (priv->clips_table, fac_id);
source_table = g_hash_table_lookup (priv->sources_table, fac_id);
make_source (self, reflist, source_table);
}
g_list_free (keys);
return TRUE;
}
static gboolean
load_pitivi_file_from_uri (GESFormatter * self,
GESTimeline * timeline, const gchar * uri, GError ** error)
{
xmlDocPtr doc;
GESTimelineLayer *layer;
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
gboolean ret = TRUE;
gint *prio = malloc (sizeof (gint));
*prio = 0;
layer = ges_timeline_layer_new ();
g_object_set (layer, "auto-transition", TRUE, NULL);
g_hash_table_insert (priv->layers_table, prio, layer);
g_object_set (layer, "priority", (gint32) 0, NULL);
if (!ges_timeline_add_layer (timeline, layer)) {
GST_ERROR ("Couldn't add layer");
return FALSE;
}
if (!(doc = xmlParseFile (uri))) {
GST_ERROR ("The xptv file for uri %s was badly formed or did not exist",
uri);
return FALSE;
}
priv->xpathCtx = xmlXPathNewContext (doc);
if (self->project)
parse_metadatas (self);
if (!create_tracks (self)) {
GST_ERROR ("Couldn't create tracks");
return FALSE;
}
list_sources (self);
if (!parse_clips (self)) {
GST_ERROR ("Couldn't find clips markup in the xptv file");
return FALSE;
}
if (!parse_track_elements (self)) {
GST_ERROR ("Couldn't find track objects markup in the xptv file");
return FALSE;
}
/* If there are no clips to load we should emit
* 'project-loaded' signal.
*/
if (!g_hash_table_size (priv->clips_table) && GES_FORMATTER (self)->project) {
ges_project_set_loaded (GES_FORMATTER (self)->project,
GES_FORMATTER (self));
} else {
if (!make_clips (self)) {
GST_ERROR ("Couldn't deserialise the project properly");
return FALSE;
}
}
xmlXPathFreeContext (priv->xpathCtx);
xmlFreeDoc (doc);
return ret;
}
/* Object functions */
static void
ges_pitivi_formatter_finalize (GObject * object)
{
GESPitiviFormatter *self = GES_PITIVI_FORMATTER (object);
GESPitiviFormatterPrivate *priv = GES_PITIVI_FORMATTER (self)->priv;
g_hash_table_destroy (priv->sources_table);
g_hash_table_destroy (priv->source_uris);
g_hash_table_destroy (priv->saving_source_table);
g_list_free (priv->sources_to_load);
if (priv->clips_table != NULL) {
g_hash_table_foreach (priv->clips_table,
(GHFunc) list_table_destroyer, NULL);
}
if (priv->layers_table != NULL)
g_hash_table_destroy (priv->layers_table);
if (priv->track_elements_table != NULL) {
g_hash_table_destroy (priv->track_elements_table);
}
G_OBJECT_CLASS (ges_pitivi_formatter_parent_class)->finalize (object);
}
static void
ges_pitivi_formatter_class_init (GESPitiviFormatterClass * klass)
{
GESFormatterClass *formatter_klass;
GObjectClass *object_class;
GST_DEBUG_CATEGORY_INIT (ges_pitivi_formatter_debug, "ges_pitivi_formatter",
GST_DEBUG_FG_YELLOW, "ges pitivi formatter");
object_class = G_OBJECT_CLASS (klass);
formatter_klass = GES_FORMATTER_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESPitiviFormatterPrivate));
formatter_klass->can_load_uri = pitivi_can_load_uri;
formatter_klass->save_to_uri = save_pitivi_timeline_to_uri;
formatter_klass->load_from_uri = load_pitivi_file_from_uri;
object_class->finalize = ges_pitivi_formatter_finalize;
ges_formatter_class_register_metas (formatter_klass, "pitivi",
"Legacy Pitivi project files", "xptv", "text/x-xptv",
DOUBLE_VERSION, GST_RANK_MARGINAL);
}
static void
ges_pitivi_formatter_init (GESPitiviFormatter * self)
{
GESPitiviFormatterPrivate *priv;
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_PITIVI_FORMATTER, GESPitiviFormatterPrivate);
priv = self->priv;
priv->track_elements_table =
g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
(GDestroyNotify) g_hash_table_destroy);
priv->clips_table =
g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
priv->layers_table =
g_hash_table_new_full (g_int_hash, g_str_equal, g_free, gst_object_unref);
priv->sources_table =
g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
(GDestroyNotify) g_hash_table_destroy);
priv->source_uris =
g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
priv->sources_to_load = NULL;
/* Saving context */
priv->saving_source_table =
g_hash_table_new_full (g_str_hash, g_int_equal, g_free, g_free);
priv->nb_sources = 1;
}
GESPitiviFormatter *
ges_pitivi_formatter_new (void)
{
return g_object_new (GES_TYPE_PITIVI_FORMATTER, NULL);
}
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