static GF_MediaObject *get_sync_reference(GF_Scene *scene, XMLRI *iri, u32 o_type, GF_Node *orig_ref, Bool *post_pone)
{
MFURL mfurl;
SFURL sfurl;
GF_MediaObject *res;
GF_Node *ref = NULL;
u32 stream_id = 0;
if (iri->type==XMLRI_STREAMID) {
stream_id = iri->lsr_stream_id;
} else if (!iri->string) {
return NULL;
} else {
if (iri->target) ref = iri->target;
else if (iri->string[0]=='#') ref = gf_sg_find_node_by_name(scene->graph, iri->string+1);
else ref = gf_sg_find_node_by_name(scene->graph, iri->string);
if (ref) {
#ifndef GPAC_DISABLE_SVG
GF_FieldInfo info;
#endif
/*safety check, break cyclic references*/
if (ref==orig_ref) return NULL;
switch (ref->sgprivate->tag) {
#ifndef GPAC_DISABLE_SVG
case TAG_SVG_audio:
o_type = GF_MEDIA_OBJECT_AUDIO;
if (gf_node_get_attribute_by_tag(ref, TAG_XLINK_ATT_href, 0, 0, &info)==GF_OK) {
return get_sync_reference(scene, info.far_ptr, o_type, orig_ref ? orig_ref : ref, post_pone);
}
return NULL;
case TAG_SVG_video:
o_type = GF_MEDIA_OBJECT_VIDEO;
if (gf_node_get_attribute_by_tag(ref, TAG_XLINK_ATT_href, 0, 0, &info)==GF_OK) {
return get_sync_reference(scene, info.far_ptr, o_type, orig_ref ? orig_ref : ref, post_pone);
}
return NULL;
#endif
default:
return NULL;
}
}
}
*post_pone = 0;
mfurl.count = 1;
mfurl.vals = &sfurl;
mfurl.vals[0].OD_ID = stream_id;
mfurl.vals[0].url = iri->string;
res = gf_scene_get_media_object(scene, &mfurl, o_type, 0);
if (!res) *post_pone = 1;
return res;
}
GF_SceneGraph *gf_inline_get_proto_lib(void *_is, MFURL *lib_url)
{
GF_ProtoLink *pl;
u32 i;
GF_Scene *scene = (GF_Scene *) _is;
if (!scene || !lib_url->count) return NULL;
if (gf_inline_is_hardcoded_proto(lib_url, scene->root_od->term->user->config)) return GF_SG_INTERNAL_PROTO;
i=0;
while ((pl = (GF_ProtoLink*)gf_list_enum(scene->extern_protos, &i))) {
if (!pl->mo) continue;
if (gf_mo_get_od_id(pl->url) != GF_MEDIA_EXTERNAL_ID) {
if (gf_mo_get_od_id(pl->url) == gf_mo_get_od_id(lib_url)) {
if (!pl->mo->odm || !pl->mo->odm->subscene) return NULL;
return pl->mo->odm->subscene->graph;
}
}
}
/*for string URL based protos, recursively check until top if the proto lib is not already present*/
if (lib_url->vals[0].url) {
GF_Scene *check_scene = scene;
while (check_scene) {
i=0;
while ((pl = (GF_ProtoLink*)gf_list_enum(check_scene->extern_protos, &i))) {
char *url1, *url2;
Bool ok;
if (!pl->mo) continue;
if (gf_mo_get_od_id(pl->url) != GF_MEDIA_EXTERNAL_ID) continue;
/*not the same url*/
if (!gf_mo_is_same_url(pl->mo, lib_url, NULL, 0)) continue;
/*check the url path is the same*/
url1 = gf_url_concatenate(pl->mo->odm->net_service->url, lib_url->vals[0].url);
url2 = gf_url_concatenate(scene->root_od->net_service->url, lib_url->vals[0].url);
ok = 0;
if (url1 && url2 && !strcmp(url1, url2)) ok=1;
if (url1) gf_free(url1);
if (url2) gf_free(url2);
if (!ok) continue;
if (!pl->mo->odm || !pl->mo->odm->subscene) return NULL;
return pl->mo->odm->subscene->graph;
}
check_scene = check_scene->root_od->parentscene;
}
}
/*not found, let's try to load it*/
if (!lib_url || !lib_url->count) return NULL;
/*internal, don't waste ressources*/
if (gf_inline_is_hardcoded_proto(lib_url, scene->root_od->term->user->config)) return NULL;
i=0;
while ((pl = (GF_ProtoLink*)gf_list_enum(scene->extern_protos, &i)) ) {
if (pl->url == lib_url) return NULL;
if (pl->url->vals[0].OD_ID && (pl->url->vals[0].OD_ID == lib_url->vals[0].OD_ID)) return NULL;
if (pl->url->vals[0].url && lib_url->vals[0].url && !stricmp(pl->url->vals[0].url, lib_url->vals[0].url) ) return NULL;
}
pl = (GF_ProtoLink*)gf_malloc(sizeof(GF_ProtoLink));
pl->url = lib_url;
gf_list_add(scene->extern_protos, pl);
pl->mo = gf_scene_get_media_object(scene, lib_url, GF_MEDIA_OBJECT_SCENE, 0);
/*this may already be destroyed*/
if (pl->mo) gf_mo_play(pl->mo, 0, -1, 0);
/*and return NULL*/
return NULL;
}
void RenderMediaControl(GF_Node *node, void *rs, Bool is_destroy)
{
Bool shall_restart, need_restart;
GF_MediaObject *prev;
GF_ObjectManager *odm;
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
MediaControlStack *stack =(MediaControlStack *) gf_node_get_private(node);
if (is_destroy) {
GF_ObjectManager *odm;
MediaControlStack *stack = (MediaControlStack *) gf_node_get_private(node);
/*reset ODM using this control*/
if (stack->stream) {
if (stack->stream->odm) {
odm = stack->stream->odm;
gf_odm_remove_mediacontrol(odm, stack);
}
/*also removes the association ck<->MC if the object has been destroyed before the node*/
if (stack->ck) stack->ck->mc = NULL;
}
gf_list_del(stack->seg);
gf_sg_vrml_mf_reset(&stack->url, GF_SG_VRML_MFURL);
gf_free(stack);
return;
}
//we need to disable culling otherwise we may never be called back again ...
tr_state->disable_cull = 1;
/*not changed nothing to do - note we need to register with stream yet for control switching...*/
if (stack->stream && (!stack->changed || !stack->control->enabled)) return;
need_restart = (stack->changed==2) ? 1 : 0;
shall_restart = (stack->control->mediaStartTime>=0) ? 1 : 0;
/*check url target*/
if (stack->stream) {
if (MC_URLChanged(&stack->url, &stack->control->url)) {
gf_sg_vrml_mf_reset(&stack->url, GF_SG_VRML_MFURL);
prev = stack->stream;
if (gf_list_find(stack->parent->scene_objects, prev)<0)
prev = NULL;
stack->stream = gf_scene_get_media_object(stack->parent, &stack->control->url, GF_MEDIA_OBJECT_UNDEF, 0);
if (stack->stream) {
if (!stack->stream->odm) return;
/*MediaControl on inline: if dynamic scene, make sure it is connected before attaching...*/
if (stack->stream->odm->subscene) {
if (stack->stream->odm->subscene->is_dynamic_scene && !stack->stream->odm->subscene->dyn_ck) return;
}
gf_sg_vrml_field_copy(&stack->url, &stack->control->url, GF_SG_VRML_MFURL);
/*remove from prev*/
if (prev && prev->odm && (prev != stack->stream)) gf_odm_remove_mediacontrol(prev->odm, stack);
/*register with new*/
/*if we assigned the media control to an exiting object - force the state of the object*/
gf_odm_set_mediacontrol((GF_ObjectManager *) stack->stream->odm, stack);
while (gf_list_count(stack->seg)) gf_list_rem(stack->seg, 0);
gf_odm_init_segments((GF_ObjectManager *) stack->stream->odm, stack->seg, &stack->control->url);
stack->current_seg = 0;
//do not restart if no mediaStartTime and speed is 1
if ((stack->control->mediaStartTime>0) || gf_list_count(stack->seg) || (stack->control->mediaSpeed != FIX_ONE) ) {
shall_restart = need_restart = 1;
} else {
shall_restart = need_restart = 0;
//URL changed, we are by default in PLAY mode.
stack->media_speed = 1;
}
stack->ck = gf_odm_get_media_clock(stack->stream->odm);
}
/*control has been removed and we were paused, resume*/
else if (stack->paused) {
mediacontrol_resume((GF_ObjectManager *) prev->odm, 0);
stack->paused = 0;
}
/*MediaControl has been detached*/
else {
if (prev)
gf_odm_remove_mediacontrol(prev->odm, stack);
return;
}
}
} else {
stack->stream = gf_scene_get_media_object(stack->parent, &stack->control->url, GF_MEDIA_OBJECT_UNDEF, 0);
if (!stack->stream || !stack->stream->odm) {
if (stack->control->url.count) gf_term_invalidate_compositor(stack->parent->root_od->term);
stack->stream = NULL;
stack->changed = 0;
return;
}
stack->ck = gf_odm_get_media_clock(stack->stream->odm);
/*OD not ready yet*/
if (!stack->ck) {
stack->stream = NULL;
if (stack->control->url.count) {
stack->is_init = 0;
gf_term_invalidate_compositor(stack->parent->root_od->term);
}
return;
}
gf_sg_vrml_field_copy(&stack->url, &stack->control->url, GF_SG_VRML_MFURL);
gf_odm_set_mediacontrol((GF_ObjectManager *) stack->stream->odm, stack);
while (gf_list_count(stack->seg)) gf_list_rem(stack->seg, 0);
gf_odm_init_segments((GF_ObjectManager *) stack->stream->odm, stack->seg, &stack->control->url);
stack->current_seg = 0;
/*we shouldn't have to restart unless start/stop times have been changed, which is tested below*/
need_restart = 0;
}
if (!stack->changed || !stack->control->enabled || !stack->stream) return;
/*if not previously enabled and now enabled, switch all other controls off and reactivate*/
if (!stack->enabled) {
stack->enabled = 1;
need_restart = gf_odm_switch_mediacontrol(stack->stream->odm, stack);
}
stack->changed = 0;
if (!stack->control->mediaSpeed) shall_restart = 0;
odm = (GF_ObjectManager *)stack->stream->odm;
/*check for changes*/
if (!stack->is_init) {
/*not linked yet*/
if (!odm) return;
stack->media_speed = stack->control->mediaSpeed;
stack->enabled = stack->control->enabled;
stack->media_start = stack->control->mediaStartTime;
stack->media_stop = stack->control->mediaStopTime;
stack->is_init = 1;
stack->paused = 0;
/*the object has already been started, and media start time is not 0, restart*/
if (stack->stream->num_open) {
if ( (stack->media_start > 0) || (gf_list_count(stack->seg)>0 ) || (stack->media_speed!=FIX_ONE ) ) {
mediacontrol_restart(odm);
} else if (stack->media_speed == 0) {
mediacontrol_pause(odm);
stack->paused = 1;
}
}
return;
}
if (stack->media_speed != stack->control->mediaSpeed) {
/*if no speed pause*/
if (!stack->control->mediaSpeed && !stack->paused) {
mediacontrol_pause(odm);
stack->paused = 1;
}
/*else resume if paused*/
else if (stack->control->mediaSpeed && stack->paused) {
mediacontrol_resume(odm, 0);
stack->paused = 0;
need_restart += shall_restart;
}
/*else set speed*/
else if (stack->media_speed && stack->control->mediaSpeed) {
/*don't set speed if we have to restart the media ...*/
if (!shall_restart) MC_SetSpeed(odm, stack->control->mediaSpeed);
need_restart += shall_restart;
}
/*init state was paused*/
else if (!stack->media_speed) {
need_restart ++;
}
stack->media_speed = stack->control->mediaSpeed;
}
/*check start/stop changes*/
if (stack->media_start != stack->control->mediaStartTime) {
stack->media_start = stack->control->mediaStartTime;
need_restart += shall_restart;
}
/*stop change triggers restart no matter what (new range) if playing*/
if (stack->media_stop != stack->control->mediaStopTime) {
stack->media_stop = stack->control->mediaStopTime;
if (stack->control->mediaSpeed) need_restart = 1;
}
if (need_restart) {
mediacontrol_restart(odm);
}
/*handle preroll*/
}