static GF_Err VTT_AttachScene(GF_SceneDecoder *plug, GF_Scene *scene, Bool is_scene_decoder)
{
VTTDec *vttdec = (VTTDec *)plug->privateStack;
/*WebVTT cannot be a root scene object*/
//if (is_scene_decoder) return GF_BAD_PARAM;
vttdec->scene = scene;
vttdec->terminal = scene->root_od->term;
vttdec->sg = gf_sg_new_subscene(vttdec->scene->graph);
VTT_load_script(vttdec, vttdec->sg);
//vtt_create_text_node(vttdec, 2000, GF_TRUE);
return GF_OK;
}
static GF_Err TTD_AttachStream(GF_BaseDecoder *plug, GF_ESD *esd)
{
TTDPriv *priv = (TTDPriv *)plug->privateStack;
GF_Err e;
GF_Node *root, *n1, *n2;
const char *opt;
/*no scalable, no upstream*/
if (priv->nb_streams || esd->decoderConfig->upstream) return GF_NOT_SUPPORTED;
if (!esd->decoderConfig->decoderSpecificInfo || !esd->decoderConfig->decoderSpecificInfo->data) return GF_NON_COMPLIANT_BITSTREAM;
priv->cfg = (GF_TextConfig *) gf_odf_desc_new(GF_ODF_TEXT_CFG_TAG);
e = gf_odf_get_text_config(esd->decoderConfig->decoderSpecificInfo, (u8) esd->decoderConfig->objectTypeIndication, priv->cfg);
if (e) {
gf_odf_desc_del((GF_Descriptor *) priv->cfg);
priv->cfg = NULL;
return e;
}
priv->nb_streams++;
if (!priv->cfg->timescale) priv->cfg->timescale = 1000;
priv->sg = gf_sg_new_subscene(priv->inlineScene->graph);
root = ttd_create_node(priv, TAG_MPEG4_OrderedGroup, NULL);
gf_sg_set_root_node(priv->sg, root);
gf_node_register(root, NULL);
/*root transform*/
priv->tr_track = (M_Transform2D *)ttd_create_node(priv, TAG_MPEG4_Transform2D, NULL);
add_child((GF_Node *) priv->tr_track, root);
TTD_UpdateSizeInfo(priv);
/*txt track background*/
n1 = ttd_create_node(priv, TAG_MPEG4_Shape, NULL);
add_child(n1, (GF_Node *) priv->tr_track);
((M_Shape *)n1)->appearance = ttd_create_node(priv, TAG_MPEG4_Appearance, NULL);
gf_node_register(((M_Shape *)n1)->appearance, n1);
priv->mat_track = (M_Material2D *) ttd_create_node(priv, TAG_MPEG4_Material2D, NULL);
priv->mat_track->filled = 1;
priv->mat_track->transparency = 1;
((M_Appearance *) ((M_Shape *)n1)->appearance)->material = (GF_Node *) priv->mat_track;
gf_node_register((GF_Node *) priv->mat_track, ((M_Shape *)n1)->appearance);
n2 = ttd_create_node(priv, TAG_MPEG4_Rectangle, NULL);
((M_Rectangle *)n2)->size.x = 0;
((M_Rectangle *)n2)->size.y = 0;
((M_Shape *)n1)->geometry = n2;
gf_node_register(n2, n1);
priv->rec_track = (M_Rectangle *)n2;
/*txt box background*/
priv->tr_box = (M_Transform2D *) ttd_create_node(priv, TAG_MPEG4_Transform2D, NULL);
add_child((GF_Node*) priv->tr_box, (GF_Node*)priv->tr_track);
n1 = ttd_create_node(priv, TAG_MPEG4_Shape, NULL);
add_child(n1, (GF_Node*)priv->tr_box);
((M_Shape *)n1)->appearance = ttd_create_node(priv, TAG_MPEG4_Appearance, NULL);
gf_node_register(((M_Shape *)n1)->appearance, n1);
priv->mat_box = (M_Material2D *) ttd_create_node(priv, TAG_MPEG4_Material2D, NULL);
priv->mat_box->filled = 1;
priv->mat_box->transparency = 1;
((M_Appearance *) ((M_Shape *)n1)->appearance)->material = (GF_Node *)priv->mat_box;
gf_node_register((GF_Node *)priv->mat_box, ((M_Shape *)n1)->appearance);
priv->rec_box = (M_Rectangle *) ttd_create_node(priv, TAG_MPEG4_Rectangle, NULL);
priv->rec_box->size.x = 0;
priv->rec_box->size.y = 0;
((M_Shape *)n1)->geometry = (GF_Node *) priv->rec_box;
gf_node_register((GF_Node *) priv->rec_box, n1);
priv->dlist = (M_Layer2D *) ttd_create_node(priv, TAG_MPEG4_Layer2D, NULL);
priv->dlist->size.x = priv->cfg->text_width;
priv->dlist->size.y = priv->cfg->text_height;
add_child((GF_Node *)priv->dlist, (GF_Node *)priv->tr_box);
priv->blink_nodes = gf_list_new();
priv->ts_blink = (M_TimeSensor *) ttd_create_node(priv, TAG_MPEG4_TimeSensor, "TimerBlink");
priv->ts_blink->cycleInterval = 0.25;
priv->ts_blink->startTime = 0.0;
priv->ts_blink->loop = 1;
priv->process_blink = (M_ScalarInterpolator *) ttd_create_node(priv, TAG_MPEG4_ScalarInterpolator, NULL);
/*override set_fraction*/
priv->process_blink->on_set_fraction = ttd_set_blink_fraction;
gf_node_set_private((GF_Node *) priv->process_blink, priv);
/*route from fraction_changed to set_fraction*/
gf_sg_route_new(priv->sg, (GF_Node *) priv->ts_blink, 6, (GF_Node *) priv->process_blink, 0);
priv->ts_scroll = (M_TimeSensor *) ttd_create_node(priv, TAG_MPEG4_TimeSensor, "TimerScroll");
priv->ts_scroll->cycleInterval = 0;
priv->ts_scroll->startTime = -1;
priv->ts_scroll->loop = 0;
priv->process_scroll = (M_ScalarInterpolator *) ttd_create_node(priv, TAG_MPEG4_ScalarInterpolator, NULL);
/*override set_fraction*/
priv->process_scroll->on_set_fraction = ttd_set_scroll_fraction;
gf_node_set_private((GF_Node *) priv->process_scroll, priv);
/*route from fraction_changed to set_fraction*/
gf_sg_route_new(priv->sg, (GF_Node *) priv->ts_scroll, 6, (GF_Node *) priv->process_scroll, 0);
gf_node_register((GF_Node *) priv->ts_blink, NULL);
gf_node_register((GF_Node *) priv->process_blink, NULL);
gf_node_register((GF_Node *) priv->ts_scroll, NULL);
gf_node_register((GF_Node *) priv->process_scroll, NULL);
/*option setup*/
opt = gf_modules_get_option((GF_BaseInterface *)plug, "StreamingText", "UseTexturing");
priv->use_texture = (opt && !strcmp(opt, "yes")) ? 1 : 0;
opt = gf_modules_get_option((GF_BaseInterface *)plug, "StreamingText", "OutlineText");
priv->outline = (opt && !strcmp(opt, "yes")) ? 1 : 0;
return e;
}