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73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* -*- Mode: C; c-file-style: "stroustrup" -*- */
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#ifndef __GST_TEXTOVERLAY_H__
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#define __GST_TEXTOVERLAY_H__
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#include <gst/gst.h>
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#include <pango/pangoft2.h>
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G_BEGIN_DECLS
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#define GST_TYPE_TEXTOVERLAY (gst_textoverlay_get_type())
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#define GST_TEXTOVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
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GST_TYPE_TEXTOVERLAY, GstTextOverlay))
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#define GST_TEXTOVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\
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GST_TYPE_ULAW, GstTextOverlay))
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#define GST_TEXTOVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
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GST_TYPE_TEXTOVERLAY, GstTextOverlayClass))
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#define GST_IS_TEXTOVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
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GST_TYPE_TEXTOVERLAY))
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#define GST_IS_TEXTOVERLAY_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),\
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GST_TYPE_TEXTOVERLAY))
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typedef struct _GstTextOverlay GstTextOverlay;
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typedef struct _GstTextOverlayClass GstTextOverlayClass;
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typedef enum _GstTextOverlayVAlign GstTextOverlayVAlign;
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typedef enum _GstTextOverlayHAlign GstTextOverlayHAlign;
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enum _GstTextOverlayVAlign {
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GST_TEXT_OVERLAY_VALIGN_BASELINE,
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GST_TEXT_OVERLAY_VALIGN_BOTTOM,
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GST_TEXT_OVERLAY_VALIGN_TOP,
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};
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enum _GstTextOverlayHAlign {
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GST_TEXT_OVERLAY_HALIGN_LEFT,
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GST_TEXT_OVERLAY_HALIGN_CENTER,
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GST_TEXT_OVERLAY_HALIGN_RIGHT,
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};
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struct _GstTextOverlay {
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GstElement element;
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GstPad *video_sinkpad;
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GstPad *text_sinkpad;
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GstPad *srcpad;
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gint width;
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gint height;
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PangoLayout *layout;
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FT_Bitmap bitmap;
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gint bitmap_buffer_size;
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gint baseline_y;
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GstTextOverlayVAlign valign;
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GstTextOverlayHAlign halign;
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gint x0;
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gint y0;
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GstBuffer *current_buffer;
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GstBuffer *next_buffer;
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gchar *default_text;
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gboolean need_render;
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};
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struct _GstTextOverlayClass {
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GstElementClass parent_class;
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PangoContext *pango_context;
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};
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GType gst_textoverlay_get_type(void) G_GNUC_CONST;
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G_END_DECLS
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#endif /* __GST_TEXTOVERLAY_H */
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