ext: New ccextractor element

Allows extracting GstVideoCaptionMeta from a stream and outputs
it to a standalone stream.

Part of a new 'ext' closedcaption plugin, since more features are
going to be added, which will depend on external dependencies such
as pango.

1 files changed, 61 insertions, 0 deletions

diff --git a/ext/closedcaption/gstccextractor.h b/ext/closedcaption/gstccextractor.h
new file mode 100644
index 000000000..2ad8bd394
--- /dev/null
+++ b/ext/closedcaption/gstccextractor.h
@@ -0,0 +1,61 @@
+/*
+ * GStreamer
+ * Copyright (C) 2018 Edward Hervey <edward@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_CCEXTRACTOR_H__
+#define __GST_CCEXTRACTOR_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstflowcombiner.h>
+#include <gst/video/video-anc.h>
+
+G_BEGIN_DECLS
+#define GST_TYPE_CCEXTRACTOR \
+  (gst_cc_extractor_get_type())
+#define GST_CCEXTRACTOR(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CCEXTRACTOR,GstCCExtractor))
+#define GST_CCEXTRACTOR_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CCEXTRACTOR,GstCCExtractorClass))
+#define GST_IS_CCEXTRACTOR(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CCEXTRACTOR))
+#define GST_IS_CCEXTRACTOR_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CCEXTRACTOR))
+
+typedef struct _GstCCExtractor GstCCExtractor;
+typedef struct _GstCCExtractorClass GstCCExtractorClass;
+
+struct _GstCCExtractor
+{
+  GstElement element;
+
+  GstPad *sinkpad, *srcpad, *captionpad;
+  GstVideoCaptionType caption_type;
+
+  GstFlowCombiner *combiner;
+};
+
+struct _GstCCExtractorClass
+{
+  GstElementClass parent_class;
+};
+
+GType gst_cc_extractor_get_type (void);
+
+G_END_DECLS
+#endif /* __GST_CCEXTRACTOR_H__ */