static GstCaps *
gst_openal_sink_getcaps (GstBaseSink * bsink)
{
GstOpenALSink *sink = GST_OPENAL_SINK (bsink);
GstCaps *caps;
if (sink->device == NULL) {
GstPad *pad = GST_BASE_SINK_PAD (bsink);
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
} else if (sink->probed_caps)
caps = gst_caps_copy (sink->probed_caps);
else {
if (sink->context)
caps = gst_openal_helper_probe_caps (sink->context);
else if (sink->custom_ctx)
caps = gst_openal_helper_probe_caps (sink->custom_ctx);
else {
ALCcontext *ctx = alcCreateContext (sink->device, NULL);
if (ctx) {
caps = gst_openal_helper_probe_caps (ctx);
alcDestroyContext (ctx);
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, FAILED,
("Could not create temporary context."),
GST_ALC_ERROR (sink->device));
caps = NULL;
}
}
if (caps && !gst_caps_is_empty (caps))
sink->probed_caps = gst_caps_copy (caps);
}
return caps;
}
static GstCaps *
gst_openal_sink_getcaps (GstBaseSink * basesink, GstCaps * filter)
{
GstOpenALSink *sink = GST_OPENAL_SINK (basesink);
GstCaps *caps;
if (sink->default_device == NULL) {
GstPad *pad = GST_BASE_SINK_PAD (basesink);
GstCaps *tcaps = gst_pad_get_pad_template_caps (pad);
caps = gst_caps_copy (tcaps);
gst_caps_unref (tcaps);
} else if (sink->probed_caps)
caps = gst_caps_copy (sink->probed_caps);
else {
if (sink->default_context)
caps = gst_openal_helper_probe_caps (sink->default_context);
else if (sink->user_context)
caps = gst_openal_helper_probe_caps (sink->user_context);
else {
ALCcontext *context = alcCreateContext (sink->default_device, NULL);
if (context) {
caps = gst_openal_helper_probe_caps (context);
alcDestroyContext (context);
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, FAILED,
("Could not create temporary context."),
GST_ALC_ERROR (sink->default_device));
caps = NULL;
}
}
if (caps && !gst_caps_is_empty (caps))
sink->probed_caps = gst_caps_copy (caps);
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
return intersection;
} else {
return caps;
}
}
static GstCaps *
gst_openal_src_getcaps (GstBaseSrc * basesrc, GstCaps * filter)
{
GstOpenalSrc *openalsrc = GST_OPENAL_SRC (basesrc);
GstCaps *caps;
ALCdevice *device;
device = alcOpenDevice (NULL);
if (device == NULL) {
GstPad *pad = GST_BASE_SRC_PAD (basesrc);
GstCaps *tcaps = gst_pad_get_pad_template_caps (pad);
GST_ELEMENT_WARNING (openalsrc, RESOURCE, OPEN_WRITE,
("Could not open temporary device."), GST_ALC_ERROR (device));
caps = gst_caps_copy (tcaps);
gst_caps_unref (tcaps);
} else if (openalsrc->probed_caps)
caps = gst_caps_copy (openalsrc->probed_caps);
else {
ALCcontext *context = alcCreateContext (device, NULL);
if (context) {
caps = gst_openal_helper_probe_caps (context);
alcDestroyContext (context);
} else {
GST_ELEMENT_WARNING (openalsrc, RESOURCE, FAILED,
("Could not create temporary context."), GST_ALC_ERROR (device));
caps = NULL;
}
if (caps && !gst_caps_is_empty (caps))
openalsrc->probed_caps = gst_caps_copy (caps);
}
if (device != NULL) {
if (alcCloseDevice (device) == ALC_FALSE) {
GST_ELEMENT_WARNING (openalsrc, RESOURCE, CLOSE,
("Could not close temporary device."), GST_ALC_ERROR (device));
}
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
return intersection;
} else {
return caps;
}
}