summaryrefslogtreecommitdiffstats
path: root/gst/videobox/gstvideobox.c
diff options
context:
space:
mode:
Diffstat (limited to 'gst/videobox/gstvideobox.c')
-rw-r--r--gst/videobox/gstvideobox.c103
1 files changed, 27 insertions, 76 deletions
diff --git a/gst/videobox/gstvideobox.c b/gst/videobox/gstvideobox.c
index c10266d3..a50594f9 100644
--- a/gst/videobox/gstvideobox.c
+++ b/gst/videobox/gstvideobox.c
@@ -34,14 +34,30 @@
*
* The videobox plugin has many uses such as doing a mosaic of pictures,
* letterboxing video, cutting out pieces of video, picture in picture, etc..
+ *
+ * Setting autocrop to true changes the behavior of the plugin so that
+ * caps determine crop properties rather than the other way around: given
+ * input and output dimensions, the crop values are selected so that the
+ * smaller frame is effectively centered in the larger frame. This
+ * involves either cropping or padding.
+ *
+ * If you use autocrop there is little point in setting the other
+ * properties manually because they will be overriden if the caps change,
+ * but nothing stops you from doing so.
+ *
+ * Sample pipeline:
+ * |[
+ * gst-launch videotestsrc ! videobox autocrop=true ! \
+ * "video/x-raw-yuv, width=600, height=400" ! ffmpegcolorspace ! ximagesink
+ * ]|
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <gst/gst.h>
-#include <gst/base/gstbasetransform.h>
-#include <gst/video/video.h>
+
+#include "gstvideobox.h"
+
#include <math.h>
#include <liboil/liboil.h>
#include <string.h>
@@ -49,59 +65,6 @@
GST_DEBUG_CATEGORY_STATIC (videobox_debug);
#define GST_CAT_DEFAULT videobox_debug
-#define GST_TYPE_VIDEO_BOX \
- (gst_video_box_get_type())
-#define GST_VIDEO_BOX(obj) \
- (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_BOX,GstVideoBox))
-#define GST_VIDEO_BOX_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_BOX,GstVideoBoxClass))
-#define GST_IS_VIDEO_BOX(obj) \
- (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_BOX))
-#define GST_IS_VIDEO_BOX_CLASS(klass) \
- (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_BOX))
-
-typedef struct _GstVideoBox GstVideoBox;
-typedef struct _GstVideoBoxClass GstVideoBoxClass;
-
-typedef enum
-{
- VIDEO_BOX_FILL_BLACK,
- VIDEO_BOX_FILL_GREEN,
- VIDEO_BOX_FILL_BLUE,
- VIDEO_BOX_FILL_LAST
-}
-GstVideoBoxFill;
-
-struct _GstVideoBox
-{
- GstBaseTransform element;
-
- /* Guarding everything below */
- GMutex *mutex;
- /* caps */
- guint32 in_fourcc;
- gint in_width, in_height;
- guint32 out_fourcc;
- gint out_width, out_height;
-
- gint box_left, box_right, box_top, box_bottom;
-
- gint border_left, border_right, border_top, border_bottom;
- gint crop_left, crop_right, crop_top, crop_bottom;
-
- gdouble alpha;
- gdouble border_alpha;
-
- GstVideoBoxFill fill_type;
-
- gboolean autocrop;
-};
-
-struct _GstVideoBoxClass
-{
- GstBaseTransformClass parent_class;
-};
-
/* elementfactory information */
static const GstElementDetails gst_video_box_details =
GST_ELEMENT_DETAILS ("Video box filter",
@@ -132,25 +95,6 @@ enum
/* FILL ME */
};
-/*
-
-Setting autocrop to true changes the behavior of the plugin so that
-caps determine crop properties rather than the other way around: given
-input and output dimensions, the crop values are selected so that the
-smaller frame is effectively centered in the larger frame. This
-involves either cropping or padding.
-
-If you use autocrop there is little point in setting the other
-properties manually because they will be overriden if the caps change,
-but nothing stops you from doing so.
-
-Sample pipeline:
-gst-launch videotestsrc ! videobox autocrop=true ! \
-"video/x-raw-yuv, width=600, height=400" ! ffmpegcolorspace ! ximagesink
-
-*/
-
-
static GstStaticPadTemplate gst_video_box_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
@@ -167,7 +111,6 @@ static GstStaticPadTemplate gst_video_box_sink_template =
GST_VIDEO_CAPS_YUV ("I420"))
);
-
GST_BOILERPLATE (GstVideoBox, gst_video_box, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM);
@@ -273,6 +216,14 @@ gst_video_box_class_init (GstVideoBoxClass * klass)
g_param_spec_double ("border_alpha", "Border Alpha",
"Alpha value of the border", 0.0, 1.0, DEFAULT_BORDER_ALPHA,
G_PARAM_READWRITE));
+ /**
+ * GstVideoBox:autocrop
+ *
+ * If set to %TRUE videobox will automatically crop/pad the input
+ * video to be centered in the output.
+ *
+ * Since: 0.10.16
+ **/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_AUTOCROP,
g_param_spec_boolean ("autocrop", "Auto crop",
"Auto crop", FALSE, G_PARAM_READWRITE));