subprojects/gst-plugins-bad/ext/closedcaption/ccutils.h

   1 /*
   2  * GStreamer
   3  * Copyright (C) 2022 Matthew Waters <matthew@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 #include <gst/gst.h>
  22 #include <gst/video/video.h>
  23
  24 #ifndef __CCUTILS_H__
  25 #define __CCUTILS_H__
  26
  27 G_BEGIN_DECLS
  28
  29 GST_DEBUG_CATEGORY_EXTERN(ccutils_debug_cat);
  30
  31 struct cdp_fps_entry
  32 {
  33   guint8 fps_idx;               /* value stored in cdp */
  34   guint fps_n, fps_d;
  35   guint max_cc_count;
  36   guint max_ccp_count;
  37   guint max_cea608_count;
  38 };
  39
  40 G_GNUC_INTERNAL
  41 const struct cdp_fps_entry * cdp_fps_entry_from_fps (guint fps_n, guint fps_d);
  42 G_GNUC_INTERNAL
  43 const struct cdp_fps_entry * cdp_fps_entry_from_id  (guint8 id);
  44
  45 extern const struct cdp_fps_entry null_fps_entry;
  46
  47 typedef enum {
  48   GST_CC_CDP_MODE_TIME_CODE   = (1<<0),
  49   GST_CC_CDP_MODE_CC_DATA     = (1<<1),
  50   GST_CC_CDP_MODE_CC_SVC_INFO = (1<<2)
  51 } GstCCCDPMode;
  52
  53 guint           convert_cea708_cc_data_to_cdp  (GstObject * dbg_obj,
  54                                                 GstCCCDPMode cdp_mode,
  55                                                 guint16 cdp_hdr_sequence_cntr,
  56                                                 const guint8 * cc_data,
  57                                                 guint cc_data_len,
  58                                                 guint8 * cdp,
  59                                                 guint cdp_len,
  60                                                 const GstVideoTimeCode * tc,
  61                                                 const struct cdp_fps_entry *fps_entry);
  62
  63 G_END_DECLS
  64
  65 #endif