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/*
* libzvbi - Caption decoder
*
* Copyright (C) 2000, 2001, 2002, 2005 Michael H. Schimek
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: caption_decoder.h,v 1.1 2005/09/01 01:31:55 mschimek Exp $ */
#ifndef __ZVBI3_CAPTION_DECODER_H__
#define __ZVBI3_CAPTION_DECODER_H__
#include <inttypes.h> /* uint8_t */
#include <stdarg.h> /* va_list */
#include "macros.h"
#include "bcd.h" /* vbi3_pgno */
#include "page.h" /* vbi3_page */
#include "cache.h" /* vbi3_cache */
#include "network.h" /* vbi3_network */
#include "event.h" /* vbi3_event_cb */
#include "sampling_par.h" /* vbi3_videostd_set */
VBI3_BEGIN_DECLS
/**
* @addtogroup Caption
* @{
*/
typedef enum {
VBI3_CAPTION_MODE_UNKNOWN,
VBI3_CAPTION_MODE_POP_ON,
VBI3_CAPTION_MODE_PAINT_ON,
VBI3_CAPTION_MODE_ROLL_UP,
VBI3_CAPTION_MODE_TEXT
} vbi3_caption_mode;
/**
* @brief Meta data and statistical info about a Closed Caption channels.
*/
typedef struct {
vbi3_pgno channel;
/** VBI3_SUBTITLE_PAGE or VBI3_NORMAL_PAGE. */
vbi3_page_type page_type;
vbi3_caption_mode caption_mode;
/**
* Language, if a subtitle page. This is a ISO 639 two-character
* language code string, for example "fr" for French. Can be
* NULL if unknown.
*/
const char * language_code;
double last_received;
void * reserved1[2];
unsigned int reserved2[2];
} vbi3_cc_channel_stat;
extern void
vbi3_cc_channel_stat_destroy (vbi3_cc_channel_stat * cs)
__attribute__ ((_vbi3_nonnull (1)));
extern void
vbi3_cc_channel_stat_init (vbi3_cc_channel_stat * cs)
__attribute__ ((_vbi3_nonnull (1)));
/**
* @brief Caption decoder.
*
* The contents of this structure are private.
* Call vbi3_caption_decoder_new() to allocate a Caption decoder.
*/
typedef struct _vbi3_caption_decoder vbi3_caption_decoder;
extern vbi3_bool
vbi3_caption_decoder_get_cc_channel_stat
(vbi3_caption_decoder * cd,
vbi3_cc_channel_stat * cs,
vbi3_pgno channel)
__attribute__ ((_vbi3_nonnull (1, 2)));
extern vbi3_page *
vbi3_caption_decoder_get_page_va_list
(vbi3_caption_decoder * cd,
vbi3_pgno channel,
va_list format_options)
__attribute__ ((malloc,
_vbi3_nonnull (1)));
extern vbi3_page *
vbi3_caption_decoder_get_page (vbi3_caption_decoder * cd,
vbi3_pgno channel,
...)
__attribute__ ((malloc,
_vbi3_nonnull (1),
_vbi3_sentinel));
extern vbi3_bool
vbi3_caption_decoder_feed (vbi3_caption_decoder * cd,
const uint8_t buffer[2],
unsigned int line,
double timestamp)
__attribute__ ((_vbi3_nonnull (1, 2)));
extern void
vbi3_caption_decoder_remove_event_handler
(vbi3_caption_decoder * cd,
vbi3_event_cb * callback,
void * user_data)
__attribute__ ((_vbi3_nonnull (1)));
extern vbi3_bool
vbi3_caption_decoder_add_event_handler
(vbi3_caption_decoder * cd,
unsigned int event_mask,
vbi3_event_cb * callback,
void * user_data)
__attribute__ ((_vbi3_nonnull (1)));
extern vbi3_bool
vbi3_caption_decoder_get_network
(vbi3_caption_decoder * cd,
vbi3_network * nk)
__attribute__ ((_vbi3_nonnull (1, 2)));
extern vbi3_cache *
vbi3_caption_decoder_get_cache (vbi3_caption_decoder * cd)
__attribute__ ((_vbi3_nonnull (1)));
extern void
vbi3_caption_decoder_reset (vbi3_caption_decoder * cd,
const vbi3_network * nk,
vbi3_videostd_set videostd_set);
extern void
vbi3_caption_decoder_delete (vbi3_caption_decoder * cd);
extern vbi3_caption_decoder *
vbi3_caption_decoder_new (vbi3_cache * ca,
const vbi3_network * nk,
vbi3_videostd_set videostd_set)
__attribute__ ((malloc));
/** @} */
VBI3_END_DECLS
#endif /* __ZVBI3_CAPTION_DECODER_H__ */
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