1 /* 2 * GStreamer 3 * Copyright (C) 2018 Edward Hervey <edward@centricular.com> 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_LINE21DECODER_H__ 22 #define __GST_LINE21DECODER_H__ 23 24 #include <gst/gst.h> 25 #include <gst/video/video.h> 26 #include <gst/video/video-anc.h> 27 #include "decoder.h" 28 29 G_BEGIN_DECLS 30 #define GST_TYPE_LINE21DECODER \ 31 (gst_line_21_decoder_get_type()) 32 #define GST_LINE21DECODER(obj) \ 33 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_LINE21DECODER,GstLine21Decoder)) 34 #define GST_LINE21DECODER_CLASS(klass) \ 35 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_LINE21DECODER,GstLine21DecoderClass)) 36 #define GST_IS_LINE21DECODER(obj) \ 37 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_LINE21DECODER)) 38 #define GST_IS_LINE21DECODER_CLASS(klass) \ 39 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_LINE21DECODER)) 40 41 typedef struct _GstLine21Decoder GstLine21Decoder; 42 typedef struct _GstLine21DecoderClass GstLine21DecoderClass; 43 44 struct _GstLine21Decoder 45 { 46 GstVideoFilter parent; 47 48 gboolean compatible_format; 49 vbi_raw_decoder zvbi_decoder; 50 51 /* Offset (in lines) to "line 21" in the incoming stream */ 52 gint line21_offset; 53 54 /* Maximum number of lines to probe when looking for CC */ 55 gint max_line_probes; 56 57 /* Whether input data is v210 and needs to be converted before 58 * processing */ 59 gboolean convert_v210; 60 guint8 *converted_lines; 61 62 GstVideoInfo *info; 63 }; 64 65 struct _GstLine21DecoderClass 66 { 67 GstVideoFilterClass parent_class; 68 }; 69 70 GType gst_line_21_decoder_get_type (void); 71 72 G_END_DECLS 73 #endif /* __GST_LINE21DECODER_H__ */ 74