--- /dev/null
+#ifndef __GST_TEXT_OVERLAY_H__
+#define __GST_TEXT_OVERLAY_H__
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/controller/gstcontroller.h>
+#include <pango/pangocairo.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_TEXT_OVERLAY (gst_text_overlay_get_type())
+#define GST_TEXT_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
+ GST_TYPE_TEXT_OVERLAY, GstTextOverlay))
+#define GST_TEXT_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\
+ GST_TYPE_TEXT_OVERLAY,GstTextOverlayClass))
+#define GST_TEXT_OVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
+ GST_TYPE_TEXT_OVERLAY, GstTextOverlayClass))
+#define GST_IS_TEXT_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
+ GST_TYPE_TEXT_OVERLAY))
+#define GST_IS_TEXT_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),\
+ GST_TYPE_TEXT_OVERLAY))
+
+typedef struct _GstTextOverlay GstTextOverlay;
+typedef struct _GstTextOverlayClass GstTextOverlayClass;
+
+/**
+ * GstTextOverlayVAlign:
+ * @GST_TEXT_OVERLAY_VALIGN_BASELINE: draw text on the baseline
+ * @GST_TEXT_OVERLAY_VALIGN_BOTTOM: draw text on the bottom
+ * @GST_TEXT_OVERLAY_VALIGN_TOP: draw text on top
+ * @GST_TEXT_OVERLAY_VALIGN_POS: draw text according to the #GstTextOverlay:ypos property
+ * @GST_TEXT_OVERLAY_VALIGN_CENTER: draw text vertically centered
+ *
+ * Vertical alignment of the text.
+ */
+typedef enum {
+ GST_TEXT_OVERLAY_VALIGN_BASELINE,
+ GST_TEXT_OVERLAY_VALIGN_BOTTOM,
+ GST_TEXT_OVERLAY_VALIGN_TOP,
+ GST_TEXT_OVERLAY_VALIGN_POS,
+ GST_TEXT_OVERLAY_VALIGN_CENTER
+} GstTextOverlayVAlign;
+
+/**
+ * GstTextOverlayHAlign:
+ * @GST_TEXT_OVERLAY_HALIGN_LEFT: align text left
+ * @GST_TEXT_OVERLAY_HALIGN_CENTER: align text center
+ * @GST_TEXT_OVERLAY_HALIGN_RIGHT: align text right
+ * @GST_TEXT_OVERLAY_HALIGN_POS: position text according to the #GstTextOverlay:xpos property
+ *
+ * Horizontal alignment of the text.
+ */
+/* FIXME 0.11: remove GST_TEXT_OVERLAY_HALIGN_UNUSED */
+typedef enum {
+ GST_TEXT_OVERLAY_HALIGN_LEFT,
+ GST_TEXT_OVERLAY_HALIGN_CENTER,
+ GST_TEXT_OVERLAY_HALIGN_RIGHT,
+ GST_TEXT_OVERLAY_HALIGN_UNUSED,
+ GST_TEXT_OVERLAY_HALIGN_POS
+} GstTextOverlayHAlign;
+
+/**
+ * GstTextOverlayWrapMode:
+ * @GST_TEXT_OVERLAY_WRAP_MODE_NONE: no wrapping
+ * @GST_TEXT_OVERLAY_WRAP_MODE_WORD: do word wrapping
+ * @GST_TEXT_OVERLAY_WRAP_MODE_CHAR: do char wrapping
+ * @GST_TEXT_OVERLAY_WRAP_MODE_WORD_CHAR: do word and char wrapping
+ *
+ * Whether to wrap the text and if so how.
+ */
+typedef enum {
+ GST_TEXT_OVERLAY_WRAP_MODE_NONE = -1,
+ GST_TEXT_OVERLAY_WRAP_MODE_WORD = PANGO_WRAP_WORD,
+ GST_TEXT_OVERLAY_WRAP_MODE_CHAR = PANGO_WRAP_CHAR,
+ GST_TEXT_OVERLAY_WRAP_MODE_WORD_CHAR = PANGO_WRAP_WORD_CHAR
+} GstTextOverlayWrapMode;
+
+/**
+ * GstTextOverlayLineAlign:
+ * @GST_TEXT_OVERLAY_LINE_ALIGN_LEFT: lines are left-aligned
+ * @GST_TEXT_OVERLAY_LINE_ALIGN_CENTER: lines are center-aligned
+ * @GST_TEXT_OVERLAY_LINE_ALIGN_RIGHT: lines are right-aligned
+ *
+ * Alignment of text lines relative to each other
+ */
+typedef enum {
+ GST_TEXT_OVERLAY_LINE_ALIGN_LEFT = PANGO_ALIGN_LEFT,
+ GST_TEXT_OVERLAY_LINE_ALIGN_CENTER = PANGO_ALIGN_CENTER,
+ GST_TEXT_OVERLAY_LINE_ALIGN_RIGHT = PANGO_ALIGN_RIGHT
+} GstTextOverlayLineAlign;
+
+/**
+ * GstTextOverlay:
+ *
+ * Opaque textoverlay object structure
+ */
+struct _GstTextOverlay {
+ GstElement element;
+
+ GstPad *video_sinkpad;
+ GstPad *text_sinkpad;
+ GstPad *srcpad;
+
+ GstSegment segment;
+ GstSegment text_segment;
+ GstBuffer *text_buffer;
+ gboolean text_linked;
+ gboolean video_flushing;
+ gboolean video_eos;
+ gboolean text_flushing;
+ gboolean text_eos;
+
+ GCond *cond; /* to signal removal of a queued text
+ * buffer, arrival of a text buffer,
+ * a text segment update, or a change
+ * in status (e.g. shutdown, flushing) */
+
+ gint width;
+ gint height;
+ gint fps_n;
+ gint fps_d;
+ GstVideoFormat format;
+
+ GstTextOverlayVAlign valign;
+ GstTextOverlayHAlign halign;
+ GstTextOverlayWrapMode wrap_mode;
+ GstTextOverlayLineAlign line_align;
+
+ gint xpad;
+ gint ypad;
+ gint deltax;
+ gint deltay;
+ gdouble xpos;
+ gdouble ypos;
+ gchar *default_text;
+ gboolean want_shading;
+ gboolean silent;
+ gboolean wait_text;
+ guint color;
+
+ PangoLayout *layout;
+ gdouble shadow_offset;
+ gdouble outline_offset;
+ guchar *text_image;
+ gint image_width;
+ gint image_height;
+ gint baseline_y;
+
+ gboolean auto_adjust_size;
+ gboolean need_render;
+
+ gint shading_value; /* for timeoverlay subclass */
+
+ gboolean have_pango_markup;
+ gboolean use_vertical_render;
+};
+
+struct _GstTextOverlayClass {
+ GstElementClass parent_class;
+
+ PangoContext *pango_context;
+ GMutex *pango_lock;
+
+ gchar * (*get_text) (GstTextOverlay *overlay, GstBuffer *video_frame);
+};
+
+GType gst_text_overlay_get_type(void) G_GNUC_CONST;
+
+G_END_DECLS
+
+#endif /* __GST_TEXT_OVERLAY_H */
projects / mafwsubrenderer / blobdiff