C++ (Cpp) gst_interleave_set_process_function Examples

Example #1

File: interleave.c Project: lubing521/gst-embedded-builder

static gboolean
gst_interleave_sink_setcaps (GstInterleave * self, GstPad * pad,
    const GstCaps * caps, const GstAudioInfo * info)
{
  g_return_val_if_fail (GST_IS_INTERLEAVE_PAD (pad), FALSE);

  /* TODO: handle caps changes */
  if (self->sinkcaps && !gst_caps_is_subset (caps, self->sinkcaps)) {
    goto cannot_change_caps;
  } else {
    GstCaps *srccaps;
    GstStructure *s;
    gboolean res;

    self->width = GST_AUDIO_INFO_WIDTH (info);
    self->rate = GST_AUDIO_INFO_RATE (info);

    gst_interleave_set_process_function (self);

    srccaps = gst_caps_copy (caps);
    s = gst_caps_get_structure (srccaps, 0);

    gst_structure_remove_field (s, "channel-mask");

    gst_structure_set (s, "channels", G_TYPE_INT, self->channels, NULL);
    gst_interleave_set_channel_positions (self, s);

    gst_pad_set_active (self->src, TRUE);
    res = gst_pad_set_caps (self->src, srccaps);
    gst_caps_unref (srccaps);

    if (!res)
      goto src_did_not_accept;
  }

  if (!self->sinkcaps) {
    GstCaps *sinkcaps = gst_caps_copy (caps);
    GstStructure *s = gst_caps_get_structure (sinkcaps, 0);

    gst_structure_remove_field (s, "channel-mask");

    GST_DEBUG_OBJECT (self, "setting sinkcaps %" GST_PTR_FORMAT, sinkcaps);

    gst_caps_replace (&self->sinkcaps, sinkcaps);

    gst_caps_unref (sinkcaps);
  }

  return TRUE;

cannot_change_caps:
  {
    GST_WARNING_OBJECT (self, "caps of %" GST_PTR_FORMAT " already set, can't "
        "change", self->sinkcaps);
    return FALSE;
  }
src_did_not_accept:
  {
    GST_WARNING_OBJECT (self, "src did not accept setcaps()");
    return FALSE;
  }
}

Example #2

File: interleave.c Project: prajnashi/gst-plugins-good

static gboolean
gst_interleave_sink_setcaps (GstPad * pad, GstCaps * caps)
{
  GstInterleave *self;

  g_return_val_if_fail (GST_IS_INTERLEAVE_PAD (pad), FALSE);

  self = GST_INTERLEAVE (gst_pad_get_parent (pad));

  /* First caps that are set on a sink pad are used as output caps */
  /* TODO: handle caps changes */
  if (self->sinkcaps && !gst_caps_is_subset (caps, self->sinkcaps)) {
    goto cannot_change_caps;
  } else {
    GstCaps *srccaps;

    GstStructure *s;

    gboolean res;

    s = gst_caps_get_structure (caps, 0);

    if (!gst_structure_get_int (s, "width", &self->width))
      goto no_width;

    if (!gst_structure_get_int (s, "rate", &self->rate))
      goto no_rate;

    gst_interleave_set_process_function (self);

    if (gst_structure_has_field (s, "channel-positions")) {
      const GValue *pos_array;

      pos_array = gst_structure_get_value (s, "channel-positions");
      if (GST_VALUE_HOLDS_ARRAY (pos_array)
          && gst_value_array_get_size (pos_array) == 1) {
        const GValue *pos = gst_value_array_get_value (pos_array, 0);

        GValue *apos = g_value_array_get_nth (self->input_channel_positions,
            GST_INTERLEAVE_PAD_CAST (pad)->channel);

        g_value_set_enum (apos, g_value_get_enum (pos));
      }
    }

    srccaps = gst_caps_copy (caps);
    s = gst_caps_get_structure (srccaps, 0);

    gst_structure_set (s, "channels", G_TYPE_INT, self->channels, NULL);
    gst_interleave_set_channel_positions (self, s);

    res = gst_pad_set_caps (self->src, srccaps);
    gst_caps_unref (srccaps);

    if (!res)
      goto src_did_not_accept;
  }

  if (!self->sinkcaps) {
    GstCaps *sinkcaps = gst_caps_copy (caps);

    GstStructure *s = gst_caps_get_structure (sinkcaps, 0);

    gst_structure_remove_field (s, "channel-positions");

    gst_caps_replace (&self->sinkcaps, sinkcaps);

    gst_caps_unref (sinkcaps);
  }

  gst_object_unref (self);

  return TRUE;

cannot_change_caps:
  {
    GST_DEBUG_OBJECT (self, "caps of %" GST_PTR_FORMAT " already set, can't "
        "change", self->sinkcaps);
    gst_object_unref (self);
    return FALSE;
  }
src_did_not_accept:
  {
    GST_DEBUG_OBJECT (self, "src did not accept setcaps()");
    gst_object_unref (self);
    return FALSE;
  }
no_width:
  {
    GST_WARNING_OBJECT (self, "caps did not have width: %" GST_PTR_FORMAT,
        caps);
    gst_object_unref (self);
    return FALSE;
  }
no_rate:
  {
    GST_WARNING_OBJECT (self, "caps did not have rate: %" GST_PTR_FORMAT, caps);
    gst_object_unref (self);
    return FALSE;
  }
}