void RenderMediaControl(SFNode *node, void *rs)
{
Bool shall_restart, need_restart;
MediaObject *prev;
ODManager *odm;
MediaControlStack *stack =(MediaControlStack *) Node_GetPrivate(node);
/*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 = 0;
shall_restart = (stack->control->mediaStartTime>=0) ? 1 : 0;
/*check url target*/
if (stack->stream) {
if (MC_URLChanged(&stack->url, &stack->control->url)) {
VRML_MF_Reset(&stack->url, FT_MFURL);
prev = stack->stream;
stack->stream = IS_GetMediaObject(stack->parent, &stack->control->url, NM_OD_UNDEF);
if (stack->stream) {
if (!stack->stream->odm) return;
VRML_FieldCopy(&stack->url, &stack->control->url, FT_MFURL);
/*remove from prev*/
if (prev && prev->odm && (prev != stack->stream)) ODM_RemoveMediaControl(prev->odm, stack);
/*register with new*/
ODM_SetMediaControl((ODManager *) stack->stream->odm, stack);
while (ChainGetCount(stack->seg)) ChainDeleteEntry(stack->seg, 0);
ODM_InitSegmentDescriptors((ODManager *) stack->stream->odm, stack->seg, &stack->control->url);
stack->current_seg = 0;
shall_restart = need_restart = 1;
}
/*control has been removed and we were paused, resume*/
else if (stack->paused) {
MC_Resume((ODManager *) prev->odm);
stack->paused = 0;
}
}
} else {
stack->stream = IS_GetMediaObject(stack->parent, &stack->control->url, NM_OD_UNDEF);
if (!stack->stream || !stack->stream->odm) return;
VRML_FieldCopy(&stack->url, &stack->control->url, FT_MFURL);
ODM_SetMediaControl((ODManager *) stack->stream->odm, stack);
while (ChainGetCount(stack->seg)) ChainDeleteEntry(stack->seg, 0);
ODM_InitSegmentDescriptors((ODManager *) stack->stream->odm, stack->seg, &stack->control->url);
stack->current_seg = 0;
}
if (!stack->changed || !stack->control->enabled) return;
/*if not previously enabled and now enabled, switch all other controls off and reactivate*/
if (!stack->enabled) {
stack->enabled = 1;
need_restart = ODM_SwitchMediaControl(stack->stream->odm, stack);
}
stack->changed = 0;
if (!stack->control->mediaSpeed) shall_restart = 0;
odm = (ODManager *)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;
/*the object has already been started, and media start time is not 0, restart*/
if (stack->stream->num_open && (stack->media_start > 0) ) MC_Restart(odm);
return;
}
if (stack->media_speed != stack->control->mediaSpeed) {
/*if no speed pause*/
if (!stack->control->mediaSpeed && !stack->paused) {
MC_Pause(odm);
stack->paused = 1;
}
/*else resume if paused*/
else if (stack->control->mediaSpeed && stack->paused) {
MC_Resume(odm);
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;
}
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) {
MC_Restart(odm);
}
/*handle preroll*/
}
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*/
}
