static GstStateChangeReturn
gst_dshowaudiosrc_change_state (GstElement * element, GstStateChange transition)
{
HRESULT hres = S_FALSE;
GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
if (src->media_filter)
hres = IMediaFilter_Run (src->media_filter, 0);
if (hres != S_OK) {
GST_CAT_ERROR (dshowaudiosrc_debug,
"Can't RUN the directshow capture graph (error=%d)", hres);
src->is_running = FALSE;
return GST_STATE_CHANGE_FAILURE;
} else {
src->is_running = TRUE;
}
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
if (src->media_filter)
hres = IMediaFilter_Stop (src->media_filter);
if (hres != S_OK) {
GST_CAT_ERROR (dshowaudiosrc_debug,
"Can't STOP the directshow capture graph (error=%d)", hres);
return GST_STATE_CHANGE_FAILURE;
}
src->is_running = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
}
static gboolean
gst_dshowvideodec_destroy_graph_and_filters (GstDshowVideoDec * vdec)
{
if (vdec->mediafilter) {
IMediaFilter_Stop (vdec->mediafilter);
}
if (vdec->gstdshowsrcfilter) {
IGstDshowInterface_Release (vdec->gstdshowsrcfilter);
vdec->gstdshowsrcfilter = NULL;
}
if (vdec->srcfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->srcfilter);
IBaseFilter_Release (vdec->srcfilter);
vdec->srcfilter = NULL;
}
if (vdec->decfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->decfilter);
IBaseFilter_Release (vdec->decfilter);
vdec->decfilter = NULL;
}
if (vdec->sinkfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->sinkfilter);
IBaseFilter_Release (vdec->sinkfilter);
vdec->sinkfilter = NULL;
}
if (vdec->mediafilter) {
IMediaFilter_Release (vdec->mediafilter);
vdec->mediafilter = NULL;
}
if (vdec->filtergraph) {
IFilterGraph_Release (vdec->filtergraph);
vdec->filtergraph = NULL;
}
return TRUE;
}
static void QUARTZ_DestroyFilterGraph(IUnknown* punk)
{
CFilterGraph_THIS(punk,unk);
int i;
TRACE( "(%p)\n", punk );
/* At first, call Stop. */
IMediaControl_Stop( CFilterGraph_IMediaControl(This) );
TRACE(" sent Stop 1\n");
IMediaFilter_Stop( CFilterGraph_IMediaFilter(This) );
TRACE(" sent Stop 2\n");
i = 0;
while ( FGRAPH_Init[i].pInit != NULL )
{
FGRAPH_Init[i].pUninit( This );
i++;
}
TRACE( "succeeded.\n" );
}
