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gstreamer/ges/ges-pitivi-formatter.c
Thibault Saunier 7943bb510a ges: Make GESTimeline responsible for adding GESTrackElement to GESTrack 
+ Fix tests as necessary (Do not use agingtv as it can be "applied" on any TrackType
    	   and is not representative of what happens IRL)

We already had the infrastructure so the user can have the control over where to add
the elements (through the "select-track-for-object" signal). We now make use of that
signal everytime a GESClip is added to a GESTimelineLayer. This make user's life easier,
and object responsability clearer.
2013-03-15 00:13:09 -03:00

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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);
g_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) g_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 = g_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) g_object_unref, NULL);
g_list_free (clips);
g_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) g_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
* track-element-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, "track-element-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, g_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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