C++ (Cpp) GST_IS_VIDEO_BALANCEの例

コード例 #1

ファイル: gstvideobalance.c プロジェクト: PeterXu/gst-mobile

static const GList *
gst_video_balance_colorbalance_list_channels (GstColorBalance * balance)
{
  GstVideoBalance *videobalance = GST_VIDEO_BALANCE (balance);

  g_return_val_if_fail (videobalance != NULL, NULL);
  g_return_val_if_fail (GST_IS_VIDEO_BALANCE (videobalance), NULL);

  return videobalance->channels;
}

コード例 #2

ファイル: gstvideobalance.c プロジェクト: TheBigW/gst-plugins-good

static void
gst_video_balance_colorbalance_set_value (GstColorBalance * balance,
    GstColorBalanceChannel * channel, gint value)
{
  GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
  gdouble new_val;
  gboolean changed = FALSE;

  g_return_if_fail (vb != NULL);
  g_return_if_fail (GST_IS_VIDEO_BALANCE (vb));
  g_return_if_fail (GST_IS_VIDEO_FILTER (vb));
  g_return_if_fail (channel->label != NULL);

  GST_BASE_TRANSFORM_LOCK (vb);
  GST_OBJECT_LOCK (vb);
  if (!g_ascii_strcasecmp (channel->label, "HUE")) {
    new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
    changed = new_val != vb->hue;
    vb->hue = new_val;
  } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
    new_val = (value + 1000.0) * 2.0 / 2000.0;
    changed = new_val != vb->saturation;
    vb->saturation = new_val;
  } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
    new_val = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
    changed = new_val != vb->brightness;
    vb->brightness = new_val;
  } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
    new_val = (value + 1000.0) * 2.0 / 2000.0;
    changed = new_val != vb->contrast;
    vb->contrast = new_val;
  }

  if (changed)
    gst_video_balance_update_properties (vb);
  GST_OBJECT_UNLOCK (vb);
  GST_BASE_TRANSFORM_UNLOCK (vb);

  if (changed) {
    gst_color_balance_value_changed (balance, channel,
        gst_color_balance_get_value (balance, channel));
  }
}

コード例 #3

ファイル: gstvideobalance.c プロジェクト: PeterXu/gst-mobile

static gint
gst_video_balance_colorbalance_get_value (GstColorBalance * balance,
    GstColorBalanceChannel * channel)
{
  GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);
  gint value = 0;

  g_return_val_if_fail (vb != NULL, 0);
  g_return_val_if_fail (GST_IS_VIDEO_BALANCE (vb), 0);
  g_return_val_if_fail (channel->label != NULL, 0);

  if (!g_ascii_strcasecmp (channel->label, "HUE")) {
    value = (vb->hue + 1) * 2000.0 / 2.0 - 1000.0;
  } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
    value = vb->saturation * 2000.0 / 2.0 - 1000.0;
  } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
    value = (vb->brightness + 1) * 2000.0 / 2.0 - 1000.0;
  } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
    value = vb->contrast * 2000.0 / 2.0 - 1000.0;
  }

  return value;
}

コード例 #4

ファイル: gstvideobalance.c プロジェクト: roopar/gst-plugins-good

static void
gst_video_balance_colorbalance_set_value (GstColorBalance * balance,
    GstColorBalanceChannel * channel, gint value)
{
  GstVideoBalance *vb = GST_VIDEO_BALANCE (balance);

  g_return_if_fail (vb != NULL);
  g_return_if_fail (GST_IS_VIDEO_BALANCE (vb));
  g_return_if_fail (GST_IS_VIDEO_FILTER (vb));
  g_return_if_fail (channel->label != NULL);

  if (!g_ascii_strcasecmp (channel->label, "HUE")) {
    vb->hue = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
  } else if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
    vb->saturation = (value + 1000.0) * 2.0 / 2000.0;
  } else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
    vb->brightness = (value + 1000.0) * 2.0 / 2000.0 - 1.0;
  } else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
    vb->contrast = (value + 1000.0) * 2.0 / 2000.0;
  }

  gst_video_balance_update_properties (vb);
}