1 /* GStreamer 2 * Copyright (C) <2015> British Broadcasting Corporation 3 * Author: Chris Bass <dash@rd.bbc.co.uk> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef __GST_SUBTITLE_META_H__ 22 #define __GST_SUBTITLE_META_H__ 23 24 #include <gst/gst.h> 25 #include "subtitle.h" 26 27 G_BEGIN_DECLS 28 29 typedef struct _GstSubtitleMeta GstSubtitleMeta; 30 31 /** 32 * GstSubtitleMeta: 33 * @meta: The parent #GstMeta. 34 * @regions: The #GstSubtitleRegions containing layout and styling information 35 * needed to render the subtitle text contained in the associated #GstBuffer. 36 * 37 * Metadata type that describes the layout and styling of subtitle text 38 * contained in a #GstBuffer. 39 */ 40 struct _GstSubtitleMeta { 41 GstMeta meta; 42 43 GPtrArray *regions; 44 }; 45 46 GType gst_subtitle_meta_api_get_type (void); 47 #define GST_SUBTITLE_META_API_TYPE (gst_subtitle_meta_api_get_type()) 48 49 #define gst_buffer_get_subtitle_meta(b) \ 50 ((GstSubtitleMeta*)gst_buffer_get_meta ((b), GST_SUBTITLE_META_API_TYPE)) 51 52 #define GST_SUBTITLE_META_INFO (gst_subtitle_meta_get_info()) 53 54 gboolean gst_subtitle_meta_init (GstMeta * meta, gpointer params, 55 GstBuffer * buffer); 56 57 void gst_subtitle_meta_free (GstMeta * meta, GstBuffer * buffer); 58 59 const GstMetaInfo * gst_subtitle_meta_get_info (void); 60 61 GstSubtitleMeta * gst_buffer_add_subtitle_meta (GstBuffer * buffer, 62 GPtrArray * regions); 63 64 G_END_DECLS 65 66 #endif /* __GST_SUBTITLE_META_H__ */ 67