C++ (Cpp) gst_alsa_probe_supported_formats Beispiele

Beispiel #1

Datei: gstalsasink.c Projekt: pli3/gst-plugins-base

static GstCaps *
gst_alsasink_getcaps (GstBaseSink * bsink)
{
    GstElementClass *element_class;
    GstPadTemplate *pad_template;
    GstAlsaSink *sink = GST_ALSA_SINK (bsink);
    GstCaps *caps;

    if (sink->handle == NULL) {
        GST_DEBUG_OBJECT (sink, "device not open, using template caps");
        return NULL;                /* base class will get template caps for us */
    }

    if (sink->cached_caps) {
        GST_LOG_OBJECT (sink, "Returning cached caps");
        return gst_caps_ref (sink->cached_caps);
    }

    element_class = GST_ELEMENT_GET_CLASS (sink);
    pad_template = gst_element_class_get_pad_template (element_class, "sink");
    g_return_val_if_fail (pad_template != NULL, NULL);

    caps = gst_alsa_probe_supported_formats (GST_OBJECT (sink), sink->device,
            sink->handle, gst_pad_template_get_caps (pad_template));

    if (caps) {
        sink->cached_caps = gst_caps_ref (caps);
    }

    GST_INFO_OBJECT (sink, "returning caps %" GST_PTR_FORMAT, caps);

    return caps;
}

Beispiel #2

Datei: gstalsasink.c Projekt: lubing521/gst-embedded-builder

static GstCaps *
gst_alsasink_getcaps (GstBaseSink * bsink, GstCaps * filter)
{
  GstElementClass *element_class;
  GstPadTemplate *pad_template;
  GstAlsaSink *sink = GST_ALSA_SINK (bsink);
  GstCaps *caps, *templ_caps;

  if (sink->handle == NULL) {
    GST_DEBUG_OBJECT (sink, "device not open, using template caps");
    return NULL;                /* base class will get template caps for us */
  }

  if (sink->cached_caps) {
    if (filter) {
      caps = gst_caps_intersect_full (filter, sink->cached_caps,
          GST_CAPS_INTERSECT_FIRST);
      GST_LOG_OBJECT (sink, "Returning cached caps %" GST_PTR_FORMAT " with "
          "filter %" GST_PTR_FORMAT " applied: %" GST_PTR_FORMAT,
          sink->cached_caps, filter, caps);
      return caps;
    } else {
      GST_LOG_OBJECT (sink, "Returning cached caps %" GST_PTR_FORMAT,
          sink->cached_caps);
      return gst_caps_ref (sink->cached_caps);
    }
  }

  element_class = GST_ELEMENT_GET_CLASS (sink);
  pad_template = gst_element_class_get_pad_template (element_class, "sink");
  g_return_val_if_fail (pad_template != NULL, NULL);

  templ_caps = gst_pad_template_get_caps (pad_template);
  caps = gst_alsa_probe_supported_formats (GST_OBJECT (sink), sink->device,
      sink->handle, templ_caps);
  gst_caps_unref (templ_caps);

  if (caps) {
    sink->cached_caps = gst_caps_ref (caps);
  }

  GST_INFO_OBJECT (sink, "returning caps %" GST_PTR_FORMAT, caps);

  if (filter) {
    GstCaps *intersection;

    intersection =
        gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
    gst_caps_unref (caps);
    return intersection;
  } else {
    return caps;
  }
}

Beispiel #3

Datei: gstalsasrc.c Projekt: Distrotech/gst-plugins-base

static GstCaps *
gst_alsasrc_getcaps (GstBaseSrc * bsrc, GstCaps * filter)
{
  GstElementClass *element_class;
  GstPadTemplate *pad_template;
  GstAlsaSrc *src;
  GstCaps *caps, *templ_caps;

  src = GST_ALSA_SRC (bsrc);

  if (src->handle == NULL) {
    GST_DEBUG_OBJECT (src, "device not open, using template caps");
    return GST_BASE_SRC_CLASS (parent_class)->get_caps (bsrc, filter);
  }

  if (src->cached_caps) {
    GST_LOG_OBJECT (src, "Returning cached caps");
    if (filter)
      return gst_caps_intersect_full (filter, src->cached_caps,
          GST_CAPS_INTERSECT_FIRST);
    else
      return gst_caps_ref (src->cached_caps);
  }

  element_class = GST_ELEMENT_GET_CLASS (src);
  pad_template = gst_element_class_get_pad_template (element_class, "src");
  g_return_val_if_fail (pad_template != NULL, NULL);

  templ_caps = gst_pad_template_get_caps (pad_template);
  GST_INFO_OBJECT (src, "template caps %" GST_PTR_FORMAT, templ_caps);

  caps = gst_alsa_probe_supported_formats (GST_OBJECT (src),
      src->device, src->handle, templ_caps);
  gst_caps_unref (templ_caps);

  if (caps) {
    src->cached_caps = gst_caps_ref (caps);
  }

  GST_INFO_OBJECT (src, "returning caps %" GST_PTR_FORMAT, caps);

  if (filter) {
    GstCaps *intersection;

    intersection =
        gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
    gst_caps_unref (caps);
    return intersection;
  } else {
    return caps;
  }
}