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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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137 lines
5.9 KiB
C
137 lines
5.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2022 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#ifndef __CCUTILS_H__
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#define __CCUTILS_H__
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G_BEGIN_DECLS
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GST_DEBUG_CATEGORY_EXTERN(ccutils_debug_cat);
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struct cdp_fps_entry
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{
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guint8 fps_idx; /* value stored in cdp */
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guint fps_n, fps_d;
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guint max_cc_count;
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guint max_ccp_count;
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guint max_cea608_count;
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};
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G_GNUC_INTERNAL
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const struct cdp_fps_entry * cdp_fps_entry_from_fps (guint fps_n, guint fps_d);
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G_GNUC_INTERNAL
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const struct cdp_fps_entry * cdp_fps_entry_from_id (guint8 id);
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extern const struct cdp_fps_entry null_fps_entry;
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typedef enum {
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GST_CC_CDP_MODE_TIME_CODE = (1<<0),
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GST_CC_CDP_MODE_CC_DATA = (1<<1),
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GST_CC_CDP_MODE_CC_SVC_INFO = (1<<2)
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} GstCCCDPMode;
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G_GNUC_INTERNAL
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guint convert_cea708_cc_data_to_cdp (GstObject * dbg_obj,
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GstCCCDPMode cdp_mode,
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guint16 cdp_hdr_sequence_cntr,
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const guint8 * cc_data,
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guint cc_data_len,
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guint8 * cdp,
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guint cdp_len,
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const GstVideoTimeCode * tc,
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const struct cdp_fps_entry *fps_entry);
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G_GNUC_INTERNAL
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guint convert_cea708_cdp_to_cc_data (GstObject * dbg_obj,
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const guint8 * cdp,
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guint cdp_len,
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guint8 *cc_data,
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GstVideoTimeCode * tc,
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const struct cdp_fps_entry **out_fps_entry);
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G_GNUC_INTERNAL
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gint drop_ccp_from_cc_data (guint8 * cc_data,
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guint cc_data_len);
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#define MAX_CDP_PACKET_LEN 256
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#define MAX_CEA608_LEN 32
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G_DECLARE_FINAL_TYPE (CCBuffer, cc_buffer, GST, CC_BUFFER, GObject);
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G_GNUC_INTERNAL
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CCBuffer * cc_buffer_new (void);
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G_GNUC_INTERNAL
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void cc_buffer_get_stored_size (CCBuffer * buf,
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guint * cea608_1_len,
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guint * cea608_2_len,
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guint * cc_data_len);
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G_GNUC_INTERNAL
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gboolean cc_buffer_push_separated (CCBuffer * buf,
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const guint8 * cea608_1,
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guint cea608_1_len,
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const guint8 * cea608_2,
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guint cea608_2_len,
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const guint8 * cc_data,
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guint cc_data_len);
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G_GNUC_INTERNAL
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gboolean cc_buffer_push_cc_data (CCBuffer * buf,
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const guint8 * cc_data,
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guint cc_data_len);
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G_GNUC_INTERNAL
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void cc_buffer_take_cc_data (CCBuffer * buf,
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const struct cdp_fps_entry * fps_entry,
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guint8 * cc_data,
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guint * cc_data_len);
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G_GNUC_INTERNAL
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void cc_buffer_take_separated (CCBuffer * buf,
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const struct cdp_fps_entry * fps_entry,
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guint8 * cea608_1,
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guint * cea608_1_len,
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guint8 * cea608_2,
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guint * cea608_2_len,
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guint8 * cc_data,
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guint * cc_data_len);
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G_GNUC_INTERNAL
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void cc_buffer_take_cea608_field1 (CCBuffer * buf,
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const struct cdp_fps_entry * fps_entry,
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guint8 * cea608_1,
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guint * cea608_1_len);
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G_GNUC_INTERNAL
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void cc_buffer_take_cea608_field2 (CCBuffer * buf,
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const struct cdp_fps_entry * fps_entry,
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guint8 * cea608_2,
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guint * cea608_2_len);
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G_GNUC_INTERNAL
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gboolean cc_buffer_is_empty (CCBuffer * buf);
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G_GNUC_INTERNAL
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void cc_buffer_discard (CCBuffer * buf);
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G_GNUC_INTERNAL
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void cc_buffer_set_max_buffer_time (CCBuffer * buf,
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GstClockTime max_time);
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G_GNUC_INTERNAL
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void cc_buffer_set_output_padding (CCBuffer * buf,
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gboolean output_padding);
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G_END_DECLS
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#endif
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