mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
60ad667761
Original commit message from CVS: * ext/pango/gsttextoverlay.c: (gst_text_overlay_init), (gst_text_overlay_text_pad_unlink), (gst_text_overlay_text_event), (gst_text_overlay_video_event), (gst_text_overlay_pop_text), (gst_text_overlay_text_chain), (gst_text_overlay_video_chain), (gst_text_overlay_change_state): * ext/pango/gsttextoverlay.h: Some textoverlay fixes: for one, in the video chain function, actually wait for a text buffer to come in if there is none at the moment and there should be one; also, deal more gracefully with incoming buffers that do not have a timestamp or duration; discard text buffer when not needed any longer. Fixes #341681. * tests/check/Makefile.am: * tests/check/elements/.cvsignore: * tests/check/elements/textoverlay.c: (notgst_check_setup_src_pad2), (notgst_check_teardown_src_pad2), (setup_textoverlay), (buffer_is_all_black), (create_black_buffer), (create_text_buffer), (cleanup_textoverlay), (GST_START_TEST), (test_video_waits_for_text_send_text_newsegment_thread), (test_video_waits_for_text_shutdown_element), (test_render_continuity_push_video_buffers_thread), (textoverlay_suite): Add some unit tests for textoverlay.
133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
#ifndef __GST_TEXT_OVERLAY_H__
|
|
#define __GST_TEXT_OVERLAY_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <pango/pangoft2.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 test on top
|
|
*
|
|
* Vertical alignment of the text.
|
|
*/
|
|
typedef enum {
|
|
GST_TEXT_OVERLAY_VALIGN_BASELINE,
|
|
GST_TEXT_OVERLAY_VALIGN_BOTTOM,
|
|
GST_TEXT_OVERLAY_VALIGN_TOP
|
|
} 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
|
|
*
|
|
* Horizontal alignment of the text.
|
|
*/
|
|
typedef enum {
|
|
GST_TEXT_OVERLAY_HALIGN_LEFT,
|
|
GST_TEXT_OVERLAY_HALIGN_CENTER,
|
|
GST_TEXT_OVERLAY_HALIGN_RIGHT
|
|
} 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;
|
|
|
|
/**
|
|
* 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 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;
|
|
|
|
GstTextOverlayVAlign valign;
|
|
GstTextOverlayHAlign halign;
|
|
GstTextOverlayWrapMode wrap_mode;
|
|
|
|
gint xpad;
|
|
gint ypad;
|
|
gint deltax;
|
|
gint deltay;
|
|
gchar *default_text;
|
|
gboolean want_shading;
|
|
|
|
PangoLayout *layout;
|
|
FT_Bitmap bitmap;
|
|
gint bitmap_buffer_size;
|
|
gint baseline_y;
|
|
|
|
gboolean need_render;
|
|
|
|
gint shading_value; /* for timeoverlay subclass */
|
|
|
|
gboolean have_pango_markup;
|
|
};
|
|
|
|
struct _GstTextOverlayClass {
|
|
GstElementClass parent_class;
|
|
|
|
PangoContext *pango_context;
|
|
|
|
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 */
|