/*buffering scene protected by a mutex because it may be triggered by composition memory (audio or visual threads)*/
void gf_clock_buffer_on(GF_Clock *ck)
{
gf_mx_p(ck->mx);
if (!ck->Buffering) gf_clock_pause(ck);
ck->Buffering += 1;
gf_mx_v(ck->mx);
}
/*pause all objects*/
void mediacontrol_pause(GF_ObjectManager *odm)
{
u32 i;
GF_ObjectManager *ctrl_od;
GF_Scene *in_scene;
GF_Clock *ck;
if (odm->flags & GF_ODM_NO_TIME_CTRL) return;
/*otherwise locate all objects sharing the clock*/
ck = gf_odm_get_media_clock(odm);
if (!ck) {
odm->flags |= GF_ODM_PAUSE_QUEUED;
return;
}
in_scene = odm->parentscene;
if (odm->subscene) {
assert(odm->subscene->root_od==odm);
assert(odm->subscene->is_dynamic_scene || gf_odm_shares_clock(odm, ck) );
/*pause root*/
gf_odm_pause(odm);
in_scene = odm->subscene;
}
i=0;
while ((ctrl_od = (GF_ObjectManager*)gf_list_enum(in_scene->resources, &i))) {
if (!odm->subscene && !gf_odm_shares_clock(ctrl_od, ck))
continue;
if (ctrl_od->addon && (ctrl_od->addon->addon_type==GF_ADDON_TYPE_MAIN)) {
gf_clock_pause(ck);
gf_scene_select_main_addon(in_scene, ctrl_od, GF_TRUE, gf_clock_time(ck) );
}
if (ctrl_od->subscene) {
mediacontrol_pause(ctrl_od);
} else {
gf_odm_pause(ctrl_od);
}
}
}
/*special handling of decoders not using ESM*/
static GF_Err PrivateScene_Process(GF_Codec *codec, u32 TimeAvailable)
{
Bool resume_clock;
u32 now;
GF_Channel *ch;
GF_Scene *scene_locked;
GF_SceneDecoder *sdec = (GF_SceneDecoder *)codec->decio;
GF_Err e = GF_OK;
/*muting systems codec means we don't decode until mute is off - likely there will be visible however
there is no other way to decode system AUs without modifying the content, which is what mute is about on visual...*/
if (codec->Muted) return GF_OK;
if (codec->Status == GF_ESM_CODEC_EOS) {
gf_term_stop_codec(codec);
return GF_OK;
}
scene_locked = codec->odm->subscene ? codec->odm->subscene : codec->odm->parentscene;
ch = (GF_Channel*)gf_list_get(codec->inChannels, 0);
if (!ch) return GF_OK;
resume_clock = 0;
/*init channel clock*/
if (!ch->IsClockInit) {
Bool started;
/*signal seek*/
if (!gf_mx_try_lock(scene_locked->root_od->term->compositor->mx)) return GF_OK;
gf_es_init_dummy(ch);
sdec->ProcessData(sdec, NULL, 0, ch->esd->ESID, -1, GF_CODEC_LEVEL_NORMAL);
gf_mx_v(scene_locked->root_od->term->compositor->mx);
started = gf_clock_is_started(ch->clock);
/*let's be nice to the scene loader (that usually involves quite some parsing), pause clock while
parsing*/
gf_clock_pause(ch->clock);
codec->last_unit_dts = 0;
if (!started) return GF_OK;
}
codec->odm->current_time = codec->last_unit_cts = gf_clock_time(codec->ck);
/*lock scene*/
GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[PrivateDec] Codec %s Processing at %d\n", sdec->module_name , codec->odm->current_time));
if (!gf_mx_try_lock(scene_locked->root_od->term->compositor->mx)) return GF_OK;
now = gf_term_get_time(codec->odm->term);
e = sdec->ProcessData(sdec, NULL, 0, ch->esd->ESID, codec->odm->current_time, GF_CODEC_LEVEL_NORMAL);
now = gf_term_get_time(codec->odm->term) - now;
codec->last_unit_dts ++;
/*resume on error*/
if (e && (codec->last_unit_dts<2) ) {
gf_clock_resume(ch->clock);
codec->last_unit_dts = 2;
}
/*resume clock on 2nd decode (we assume parsing is done in 2 steps, one for first frame display, one for complete parse)*/
else if (codec->last_unit_dts==2) {
gf_clock_resume(ch->clock);
}
codec_update_stats(codec, 0, now);
gf_mx_v(scene_locked->root_od->term->compositor->mx);
if (e==GF_EOS) {
/*first end of stream, evaluate duration*/
//if (!codec->odm->duration) gf_odm_set_duration(codec->odm, ch, codec->odm->current_time);
gf_es_on_eos(ch);
return GF_OK;
}
return e;
}
