C++ (Cpp) GST_PLAY_SINK_AUDIO_CONVERT примеры использования

Пример #1

static GstCaps *
gst_play_sink_audio_convert_getcaps (GstPad * pad)
{
  GstPlaySinkAudioConvert *self =
      GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
  GstCaps *ret;
  GstPad *otherpad, *peer = NULL;

  GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
  otherpad = gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (pad));
  GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);

  if (otherpad) {
    peer = gst_pad_get_peer (otherpad);
    gst_object_unref (otherpad);
    otherpad = NULL;
  }

  if (peer) {
    ret = gst_pad_get_caps_reffed (peer);
    gst_object_unref (peer);
  } else {
    ret = gst_caps_new_any ();
  }

  gst_object_unref (self);

  return ret;
}

Пример #2

Файл: gstplaysinkaudioconvert.c Проект: mrchapp/gst-plugins-base

static GstCaps *
gst_play_sink_audio_convert_getcaps (GstPad * pad)
{
  GstPlaySinkAudioConvert *self =
      GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
  GstCaps *ret;
  GstPad *otherpad, *peer;

  GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
  if (pad == self->srcpad)
    otherpad = gst_object_ref (self->sinkpad);
  else
    otherpad = gst_object_ref (self->srcpad);
  GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);

  peer = gst_pad_get_peer (otherpad);
  if (peer) {
    ret = gst_pad_get_caps_reffed (peer);
    gst_object_unref (peer);
  } else {
    ret = gst_caps_new_any ();
  }

  gst_object_unref (otherpad);
  gst_object_unref (self);

  return ret;
}

Пример #3

static gboolean
gst_play_sink_audio_convert_sink_setcaps (GstPad * pad, GstCaps * caps)
{
  GstPlaySinkAudioConvert *self =
      GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
  gboolean ret;
  GstStructure *s;
  const gchar *name;
  gboolean reconfigure = FALSE;

  GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
  s = gst_caps_get_structure (caps, 0);
  name = gst_structure_get_name (s);

  if (g_str_has_prefix (name, "audio/x-raw-")) {
    if (!self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
      GST_DEBUG_OBJECT (self, "Changing caps from non-raw to raw");
      reconfigure = TRUE;
      gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
          (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
          (GDestroyNotify) gst_object_unref);
    }
  } else {
    if (self->raw && !gst_pad_is_blocked (self->sink_proxypad)) {
      GST_DEBUG_OBJECT (self, "Changing caps from raw to non-raw");
      reconfigure = TRUE;
      gst_pad_set_blocked_async_full (self->sink_proxypad, TRUE,
          (GstPadBlockCallback) pad_blocked_cb, gst_object_ref (self),
          (GDestroyNotify) gst_object_unref);
    }
  }

  /* Otherwise the setcaps below fails */
  if (reconfigure) {
    gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->sinkpad), NULL);
    gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
  }

  GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
  ret = gst_ghost_pad_setcaps_default (pad, caps);

  GST_DEBUG_OBJECT (self, "Setting sink caps %" GST_PTR_FORMAT ": %d", caps,
      ret);

  gst_object_unref (self);

  return ret;
}

Пример #4

static gboolean
gst_play_sink_audio_convert_sink_event (GstPad * pad, GstEvent * event)
{
  GstPlaySinkAudioConvert *self =
      GST_PLAY_SINK_AUDIO_CONVERT (gst_pad_get_parent (pad));
  gboolean ret;

  ret = gst_proxy_pad_event_default (pad, gst_event_ref (event));

  if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
    gboolean update;
    gdouble rate, applied_rate;
    GstFormat format;
    gint64 start, stop, position;

    GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
    gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
        &format, &start, &stop, &position);

    GST_DEBUG_OBJECT (self, "Segment before %" GST_SEGMENT_FORMAT,
        &self->segment);
    gst_segment_set_newsegment_full (&self->segment, update, rate, applied_rate,
        format, start, stop, position);
    GST_DEBUG_OBJECT (self, "Segment after %" GST_SEGMENT_FORMAT,
        &self->segment);
    GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
  } else if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
    GST_PLAY_SINK_AUDIO_CONVERT_LOCK (self);
    GST_DEBUG_OBJECT (self, "Resetting segment");
    gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
    GST_PLAY_SINK_AUDIO_CONVERT_UNLOCK (self);
  }

  gst_event_unref (event);
  gst_object_unref (self);

  return ret;
}